2013年10月15日星期二

The characteristics of a single -screw extruder and Application Analysis

Single screw extruder extruder as a common device , a single -screw extruder for the plastics processing industry, primarily , a single screw extruder is generally divided into three sections on the effective length , single-screw extruder press screw diameter size , pitch single screw extruder , single screw extruder screw wire drawing machine depth to determine a single screw extruder three sections the effective length of a single screw extruder generally divided by one-third each .
Efficient single screw extruder with double cascade overall design, reinforcing plasticization , single-screw extruder to ensure the stability of high-speed high-performance extrusion , special barrier integrated mixing design, single -screw extruder to ensure mixing of the material effects, high shear and low melting plasticizing temperature , high-performance materials to ensure low temperature and pressure measurement extrusion .
Single screw extruder design concepts and features: on the basis of high speed straight , high extrusion .
Single screw extruder design cheap, and thus a single screw extruder is widely used. However, single-screw extruder has its limitations in the use of a single -screw extruding machine extruder is mainly manifested in the following aspects:
( 1 ) single screw extruder material handling mainly by friction, so that a single -screw extruder feeding performance limitations , powder , paste material, inorganic fillers such as glass fiber and more difficult to join.
( 2 ) When a single -screw extruder head pressure is high , the counter increases, the single screw extruder in reduced productivity .
( 3 ) single screw extruder vented extruder the material on the surface of the exhaust area update action is small, so the exhaust single-screw extruder is less effective .
( 4 ) single-screw extruder suitable for some processes , such as polymer colored thermosetting powder processing.
Single Screw Extruder Application: All thermoplastic extrusion molding, extrusion granulation .
August 6, 2013 , China Machinery Industry Federation held the ” first half of 2013 economic complete copper and aluminum continuous operation situation Machinery Industry ” press conference . China Machinery Industry Federation executive vice president CaiWeiCi , in the Qing Ji , China Machinery Industry Federation, the statistics department director Zhao Xinmin , China Automobile Industry Association Vice President and Secretary General Dong Yang attended the conference. CaiWeiCi executive vice president of the first half of 2013 introduced the machinery industry economic operation situation , and the 2013 full-year trend of economic operation of the machinery industry to analyze and predict .
This year is the implementation of the ” Twelfth Five-Year Plan” nexus year, but also deepen the reform, continued to promote the adjustment of industrial structure to tackle tough critical period. Economic operation of the internal and external environment is complex and continuous development pressures. In this context , the machinery industry conscientiously implement the State Council’s decisions and plans , and actively promote industrial restructuring. Basic continuation of the first half of the fourth quarter of last year bottomed stabilization to the good momentum of economic operation showed a slow recovery , moderate growth and steady development trend. Forced mechanism while the role of the market , the industry continuous extrusion machine extension and expansion cooling, warming research and innovation , continue to show highlights of structural adjustment .

Drawing mechanic added value growth rate slow recovery


Looking year , industry-wide this year , although the economy is expected to run faster than last year’s , but overall will remain at a low level , year on year sales growth is expected to be die wire drawing machine about 12% , profit growth of about 8% , foreign trade exports last year roughly the same. In the current situation , the whole industry to make good use Forced mechanism , and actively promote the machinery industry restructuring and development pattern , to achieve improved quality of industry growth .
( A ) the slow growth rate of industrial added value rose , close to the national industry average
National Bureau of Statistics January- June machinery industrial added value increased by 9.2% over the previous year to speed up 0.2 percentage points. Monthly , 1- February mechanical industrial added value growth of 9 % over the same period the national industrial added value growth rate 0.9 percentage points lower , but then the overall growth rate of industrial added value of machinery showed upward trend month by month , in April , May month growth rate reached 9.9% and 9.7 % month growth rate hydraulic automatic drawing machine has been higher than the national industry . 1-6 month cumulative growth rate of machinery industry just behind the country’s industrial growth rate of 0.1 percent.
( Two ) efficiency of the sector rose faster than sales
Opening machinery industry profit growth continued last year up weak trend, a quarterly profit year on year growth of only 6.38% . Entering the second quarter, the industry profit growth has accelerated rebound , 1- June total profit of 600.1 billion yuan , the low base in the previous year growth of 12.58 percent , based on an acceleration of 10.64 percent. January to June the main business income margin was 6.35% , remained aluminum continuous extrusion machine stable. Steady growth, revenue from principal operations in the first half , 1- June totaled main business income of 9.45 trillion yuan , an increase of 12.92% . January-June machinery industry loss-making enterprises increased by 646 , the loss was 15.99% , up 0.83 percentage points, but look at the monthly losses appear before narrowing trend .
( Three ) sectors increased differentiation , a typical investment products manufacturing enterprises greater difficulties
The National Bureau of Statistics released 64 kinds of main products, machinery automatic drawing machine industry , the first half of production to achieve an increase of 36 species , accounting for 56.25% , production fell 28 kinds of products , accounting for 43.75% . Specific look , different industries increased product yield large differences , the overall showing a close relationship with the consumer products are generally better in the investment category of products , agricultural products, the passenger car , instrumentation and other products output growth is good ; car sales continued to grow rapidly in the first half total sales volume exceeded 10 million mark, respectively, 10,751,700 and 10,782,200 , an increase of 12.8% and copper and aluminum wire drawing machine 12.3 %, of which passenger car production and sales were up 14.02 percent and 13.81 % . Machine tools, construction machinery, heavy machinery, power generation equipment and other typical investment products production dropped significantly, related industry companies are subject to the difficulties greater than last year . Excavators, metal cutting machine tools, metal rolling equipment, boiler wire drawing machine production decreased by 13.89% , 12.55% , 12.04% and 12%

2013 China’s exports to Vietnam extruder data analysis


This year, China ‘s exports extruder overall there was a substantial decline, from January to July data, the decline was 7.8 percent. We also note that presses extruder outlet is only half the overall decline in exports , and export price continued to decline extruder development of a major problem, although in July exports grew plastic extruding compound substantially , However, the export amount is still not improved.
Russia has long been the extruder consumer, since the first half of this year, Russia’s domestic economic environment is poor, investment and consumer apathy , extruders , there have been about 15% of the decline, but still had to July increased by 6.1% in .
It is noteworthy that the Vietnamese market , Vietnamese imports from China until this year extruder Overall not great, but this year the amount of its imports has been rising continuously , in plates, sheets and other architectural areas of investment is growing, July extruder its imports from China increased by the amount of nearly seven -fold. Despite the instability of this year, Vietnam ,wire drawing machine and the high interest rates make credit growth is slow, difficult to achieve total social investment objectives .
Vietnam General Statistics Office data show that in January industrial production index rose sharply in Vietnam , an increase of 21.1% , the recovery of industrial property release positive signals . In fact, the current from the domestic investment in Vietnam is relatively much smaller proportion of its investments mostly from abroad. January , foreign direct investment amounted to approximately $ 281 million , an increase of 74% , processing industry and manufacturing industry on foreign direct investment registered capital of 2.03 billion U.S. dollars, accounting for 72.1% of the total registered . While a number of countries including Japan, expressed the hope that companies continue to invest in Vietnam .
As strong investment from abroad , boosting the strong domestic demand , at least in this extruding machine state will continue for some time, so in the next period of time, Vietnam ‘s demand for plastics processing equipment will continue to grow .

2013年9月12日星期四

China creates advances the engine bed overall competitive


China creates advances the engine bed overall competitive power not to be still strong difficultly
It is well known, takes the Industrial workshop of the world the Chinese manufacturing industry, makes the difficult advancement from China which creates to China, in the Chinese manufacturing industry whole is in global value chain’s low and middle-end, these phenomena already fully indicated that China is one makes the great nation, but is not makes the powerful nation the stern fact. Undeniably, this question except wire drawing machine with our country factors and so on industrial development policy, enterprise superficiality behavior and regional protectionism related outside, but also has the primitive innovation and the integrated innovation ability research and development system deficient with the Chinese Manufacturing industry Enterprise; With has not been able to advance the advanced technique of manufacture, the managerial technique and the information technology research and the depth fusion application effectively; Lacks the effective management and the innovation development power with the enterprise and so on many factors has the direct relations. As a result of these general character question’s existence, causes the Chinese manufacturing industry overall competitive power not to be strong, can become the Industrial workshop of the world only to participate in the whole world low and middle-end market competition and to compete exceptionally intensely; But the global high-end market still by enterprises and so on US, Germany, South Korea and Japan monopolized, the high quota profit flowed to these enterprise’s pocket continuously.
Some materials indicated: on March 23, 2012, when is appointed the State Council national capital to entrust Director Wang Yong to point out explicitly in the central enterprise comprehensive development management promotion activity video frequency conference that through the central enterprise and the world first-class enterprise to the sign research, generally speaking, the extruding machine disparity which the central enterprise exists is quite big, displays prominently in the foundation management, the management innovation, the investment merger and acquisition, the management informationization and the internationalization management and operation five aspects. In addition, the central enterprise’s management innovation also occupies the study, the imitation stage as a whole, has not made the substantive breakthrough. on May 15, 2012, Director Wang Yong in the national capital committee convenes the central enterprise strengthens at the foundation supervisory work on-the-spot meeting to stress, does strongly makes the superior central enterprise, the promotion central business management level, must work from the foundation management.
The engine bed profession is the high-end equipment manufacturing industry, China is the world first machine tool construction great nation, is also the world biggest engine bed importing country. The statistical data demonstrated that in 2012 the engine bed tool profession gross import is 19,649,000,000 US dollars (is mainly machining center, processes engine bed, numerically-controlled machine tool and gold cuts engine bed spare part), drops 5.28% compared to the same period. Among them, the machining center gross import is 5,651,000,000 US dollars, grows 16.19% compared to the same period; The numerically-controlled machine tool gross import is 4,722,000,000 US dollars, drops 11.9% compared to the same period. Same time, the engine bed tool profession total export is 8,300,000,000 US dollars, grows 13.55% compared to the same period, grew 29.72% with the last year to compare, the speed-up also largely receded.
The Chinese Engine bed Profession Enterprise and the world Advanced complete copper and aluminum continuous enterprise compare the existence obvious disparity. At present, the Chinese 90% numerical control system need the overseas import. Although the partial domestically produced numerical control system factory has grasped the multiple spindle linkage, RTCP basically (revolving cutting tool central point) the three dimensional cutter compensation and so on key technologies, but its development’s upscale numerical control systematic and the foreign product compares, in the working accuracy, the reliability and the stable aspect has the very big disparity. Furthermore, Shanghai populace automobile to guarantee the product quality, then uses the import grinder processing automobile spare part completely; This had also indicated from a side China is an engine bed great nation, but is not an engine bed powerful nation fact.
In the recent several years, China produces engine bed’s numerical control rate to have the promotion, in 2011, the metal-cutting machine tool numerical control rate is 29.9%, forms the engine bed numerical control rate is 6.29%; But with Japan, the US, Germany and so on developed country 60%~70% output numerical control rate and 80%~90% output value numerical control rate compares, the Chinese engine bed equipment’s numerical control rate level also appears very low, this affects inevitably the product working accuracy and the processing efficiency.
in 2011, the engine bed profession (71 enterprises participate) two fusion level of development appraisal result to demonstrate: Only then 54.2% enterprises have applied the project management, continuous extrusion machine 11.3% enterprises have applied essential resource demand ability sorting, 67.6% enterprises have applied the purchase management, 59.2% enterprises have applied the sales management, 50.7% enterprises have applied the budget management, 31.0% enterprises have applied the customer relations management, 15.5% enterprises have realized the service and the financial integration application, 11.3% enterprises have realized the management system management system and data automatic exchange between the manufacture executive system’s. The appraisal result also showed that at present the Chinese Engine bed Profession Enterprise’s production method and the management idea fall behind generally, between the information system the metasynthesis, the coordination and the innovation level also waits for enhancing. This kind of present situation and the engine bed profession 30 remaining years of life advancement enterprise informationization history is connected, its question’s crux and the gravity are also obvious.
In brief, the engine bed makes machine’s machine, is equips the manufacturing industry “the machine tool”, its importance is self-evident. The above question fully had also indicated the present our country engine bed profession overall competitive power not strong fact, this without doubt will still affect our country to equip the manufacturing industry overall ability and the benefit promotion. Therefore, the engine bed profession must exert oneself to advance the product research and development copper continuous extrusion machine pattern the optimization and the reorganization, the construction has the primitive innovation and the integrated innovation ability research and development system, researches and develops has high-tech and the high added value product. At the same time, the engine bed profession should also through with the world Advanced enterprise to the sign analysis, exert oneself to impel the strategic – pattern – flow, two depth fusions and the deepening applies idea and so on ERP research and the practice, then comprehensive impetus business management innovation.

INVT frequency changer’s on drawing machine application

The majority used drawing machine’s domestic Jin Shujia the labor enterprise, was not strange to the frequency conversion velometer, this before was because the frequency conversion velometer very early, had in the wiredrawing machinery obtains the widespread application, but mostly disposed is the overseas brand frequency changer, the reason was the domestic frequency copper and aluminum wire drawing machine conversion velocity modulation technology research and development and the market introduction start is late, after for a period of time fell, in the overseas frequency changer product, not discussed from the software control algorithm sophistication, said from hardware platform’s stability, had certain bad distance.
The domestically produced frequency conversion profession underwent several year development, the technology and the market introduction obtained the considerable progress, developed the product which sent also to be able to be competent the major part industry scene to want. In view of the wiredrawing machinery’s application characteristic, Shenzhen UK prestige leaps the electrical Limited company to open from the host sends the development the INVT series frequency changer, the target of much criticism quantity control technology (VC, SVC), the torque control technology, the V/F control technology in a body, with, supposed counts has been advantageous for the same step control function and the tensity control function which the recover of wire used, true solved drawing machine’s control to comprehensively want, thus broke the aspect which the import brand monopolized.
Drawing machine, also famous draw machine. From the product terminal, the drawing machine may divide into Dollar machine, pulls machine, slightly pulls machine, micro pulls machine; Tied the construction from the drawing machine internal control way and the machinery, might also divide into the water box-type, the pulley type, the straight forward system and so on main several kinds. To in the various requirement, the different essence regular product, the different gold is the material, may choose the different specification the wiredrawing machinery. Lives to the electric wire electric cable produces the enterprise, the divariant frequency wire drawing machine control system pulls machine the application to be quite widespread thin, relatively speaking, its request’s control performance is also low, but lives to the majority of steel wires produces the enterprise, in view of the materials behavior, its essence requests and the drawing stability is high, therefore the use straight forward system drawing machine are many. The completely tube wiredrawing craft is different, but its work process base this with
* puts the line: The tinsel silk puts the line, to in the entire drawing machine link, its control has not had the high essence request, the majority of wiredrawing machinery, puts the line the operation is passes the frequency changer to actuate to put the coil to realize, but also has the minute divariant frequency control system wiredrawing machinery, automatic drawing machineeven passes the wiredrawing link’s silk thread tensity drafts to feed in the drawing machine directly, realizes from by puts the line;
* wiredrawing: The wiredrawing link is the drawing machine wants most for the work link which again. The different gold is the material, the different fibroin variety and the request, the wiredrawing link has the very big difference, article behind the specify water box-type drawing machine and the straight forward system drawing machine concrete operations process;
* recover of wire: The recover of wire link’s working speed had decided the entire wiredrawing machinery lives produces the efficiency, is also a minute which the overall system is most difficult to control. In the recover of wire department minute, the commonly used control technology has with a step die wire drawing machine control and the tensity controls the solid cash is the product receives the volume;

China future the number will control the engine bed industry to


China future the number will control the engine bed industry to become the main competition and the prospects for development
Before the item, our country hydraulic drawing machine is the engine bed great nation, was very long to engine bed powerful nation Shang You a section to walk, with when was also the global engine bed main consuming country. Our country engine bed market produces in the low and middle-end engine bed can be sufficient, competes in the intense situation, to guarantee that the engine bed lives produces enterprise’s profit, holds the beginning to march in abundance to the high-end engine bed.

In 2012, the Chinese numerical control cutting engine bed profession present competition pattern entered the high-end brand to slaughter the stage, this stage brand refinement for, medium on, higher segmentation market, in the medium market main dependence price war’s situation, the operation was getting more and more difficult, causes many brands to start to the upstream development, gained the more brand added values and the growth space diligently.
in 2012 regarding the Chinese numerical control cutting engine bed profession, is difficult one year; in 2012 regarding the entire numerical control cutting engine bed profession, is more difficult and is complex, through investigates and studies we to discover that the first quarter the sales volume increases relies on to a great extent the stock digestion. Under such environment, the challenge which the Chinese numerical control cutting engine bed profession faces many, regarding the Chinese Native place Enterprise, huddles together especially in the low and middle-end product, take the price as the main competition method, anti-risk ability is not strong, the industrial concentration degree is low. Even if under such environment, has some new brands plastic extruding compound to enter the market, obviously profession competition intense degree.
The profession competition intense also promotes our country engine bed’s industry high-end development, because only then the quality stands up to the most rigorous test the brand only will then obtain the big market share, can carry on the competition with the Foreign-funded enterprise. In the new round five year plans, according to the national announcement’s engine bed tool profession “35” the development project, take the scientific progress as the subject, take speeds up the transformation development way as the master line, take the structure strategic readjustment as the main attack direction, walks “two fusions” the new industrialization path. Holds the profession development the important strategic opportunity, take develops the numerically-controlled machine tool necessary as the leadership, the main engine for the main item, the consummation is the foundation, the key breakthrough numerical control system and the functional unit weak link, speed up the upscale numerically-controlled machine tool industrial production. The upscale numerically-controlled machine tool needs the necessary function spare part one is mentioned in “35” the plan, after these functional unit’s development, has become the restriction engine bed profession development the wire drawing machine bottleneck.
“35” the plan also explicitly proposed that must eliminate falls the after-birth energy, for example the high pollution, consumes energy high the product manufacturing, must produce develops the high-tech content product, lets China’s engine bed product turn to a new generation, to use high-tech to go out the entrance to a country, moves toward the world. “35” period, along with the downstream user profession’s industrial upgrading, will certainly to set the higher specification to the engine bed tool profession product, also breeds is providing the bigger market demand space.
Therefore, our country engine bed profession, specially in the high-end engine bed domain, will be one competes unceasingly in next several years, eliminates unceasingly the process, extruding machine in the middle of the competition elimination’s process, facilitates the entire industrial chain’s progress.

2013年8月6日星期二

Wire drawing machine

Pulls the thin iron wire the wire rod the machinery.
Wire drawing machine classification: The large-scale company pot wire drawing machine, the big water tank wire drawing machine, the small water tank wire drawing machine automatic drawing machine (is named twin wire drawing machine)
Country’s drawing machine has formed by the old style pulley drawing machine primarily, has at the same time the double reel type, the straight forward system, conciliatory -like, the harmonious roller orthoscopic, combined and each kind of water tank wire-drawing machine coexisting present situation. The pulley type drawing machine is one kind may accumulate the line the non-glide dry type continual drawing machine; In draws in the process, does not have the relative sliding in the reel circumference direction steel wire and the reel surface along the reel circumference direction, both surface wearing capacity is relatively small, and middle time some reel unexpected halt, its following reel still might depend upon the respective product line quantity to work as usual period of time. This type has the hydraulic automatic drawing machine structure to be simple, the operation, the maintenance are convenient, production cost low status merit, double reel type drawing machine, because pulley type drawing machine in draws in the process the steel wire to be able to have the reverse phenomenon, thus has developed the double reel type drawing machine in the pulley type drawing machine’s foundation. This type has the pulley drawing machine’s merit, and eliminated the steel wire to draw in the process reverse phenomenon, the steel wire is better on reel cooling performance. The double reel type drawing machine and the pulley type drawing machine is the same, the guide pulley are many, specially between top and bottom reel’s among commits a footfault the guide pulley, causes the steel wire through it when produces 180.
The main product has the iron wire drawing machine complete set of equipment, die wire drawing machine can pull out major and medium to 0.13 millimeter from 6.5 millimeters small; The stainless steel hydrogen annealing furnace and the recover of wire machine, the drawing machine may pull out from 8 millimeters to 0.05 millimeter. The stainless steel uses the drum, the recover of wire pot is after ingredient special casting and so on white iron becomes, degree of hardness, the wear-resisting quite high service life is long. The galvanization machine may plate 0.5-4 millimeters iron wire, on the plate or the macro-axis, split out the axis is smooth and is even, the loose allowance is the same. The straight silk function straightens 1.8–6.5 millimeters, are weave a fishing net, hardware construction and so on straight silk machine. Copper plastic extruding compound wire drawing machine complete set of equipment, in addition may produce each kind of silk screen according to the user mechanical and the complete set of products and the fitting and so on common drawing machine mainly by puts the line electrical machinery and the recover of wire electrical machinery and the row of line electrical machinery constitution actuation part, along with receives the coil diameter not to expand the recover of wire electrical machinery’s rotational speed should corresponding reduction, guarantees the link speed to be constant, often uses the tensity positioner in the control to adjust the recover of wire electrical machinery’s speed. hydraulic drawing machine Strengthens, the performance unceasingly along with the frequency changer function is unceasingly stable, the frequency changer is also used in the drawing machine, in which with puts using the frequency changer control recover of wire electrical machinery the line electrical machinery, but arranges the line electrical machinery, because the power is small controls directly by the network voltage. Different wiredrawing machinery, its work process basic same.
The wire drawing machine unites the pot wire drawing machine water tank wire drawing machine medium water tank wire drawing machine to lie the pot wiredrawing mechanic print wheel recover of wire machine pulley type continual wire drawing machine trunk type recover of wire machine cold draw thread steel production machines to stand upside down type wire drawing machine 10000T the cold wire drawing machine rolling belt rib steel bar unit 8000T cold rolling belt rib steel bar unit torsion angle side steel unit

The British prestige leaps the double frequency conversion drawing machine to transform the plan

The drawing machine profession, involves the device category are many, the common drawing machine has the water tank type drawing machine, the straight forward system drawing machine, wire drawing machine the pulley type drawing machine, stands upside down the type drawing machine and so on, the drawing machine main application to Jin Shuxian cable material and so on copper wire, stainless steel wire processings, is the line cable manufacture profession great importance the processing equipment. Along with the frequency conversion velocity modulation technology’s unceasing development, the frequency conversion velometer widely was already applied in the drawing machine profession, undertakes the wiredrawing velocity modulation, the tensity volume is taking, links and so on multistage synchronization controls, frequency changer’s application, raised drawing machine’s automated level and the working capacity greatly, reduced equipment’s unit energy consumption and the maintenance cost effectively, obtained the profession widespread approval.
The figure above simple shows extruding machine the chart for the small drawing machine, from the machinery, may decompose into the wiredrawing part and the recover of wire part, may decompose the permanent tensity synchronization control from the electric control which takes for the wiredrawing stepless speed regulation control and the volume, through the tensity swing link’s position variation, the back coupling control system, undergoes the automatic operation, the change volume takes the electrical machinery running rate, thus achieves the volume to take manifests the permanent tensity and the speed synchronization with the wiredrawing two links, and through the row of line guide pulley electrical machinery, may take the speed along with the volume the difference, evenly end product tinsel winding, in the volume takes on the cylinder escapement, realizes to the metallic material stretch processing.
The figure above shows the small drawing machine’s control model, is the present mainstream complete copper and aluminum continuous control mode, the stretch and the volume takes controls controls machine IPC by PLC or the labor to complete, the frequency changer accepts PLC or the IPC instruction, realizes permanent tensity control which the stretch level’s stepless speed regulation and the volume take. This system solution will directly cause the cost soaring, the system complex, the maintenance difficulty big, the maintenance cost high, questions and so on systems control response difference.
The above schematic drawing is INVT the control mode which recommends to you, these two kinds medium, small, miniature extend the line machine electric control way, takes the volume function integrations and so on synchronization and tensity control, system start and parking control, malfunction alert in the frequency changer, melts with the mechanical system is a whole, the external signal sends in the frequency changer directly, after the internal algorithm rapid reaction to system’s positive governing, enhanced system’s speed of response greatly, omits PLC, HMI, IPC, saves the continuous extrusion machine system cost, reduces the fault point, and may dispose LED or the LCD control panel according to the user’s needs, manifests the man-machine operation user-friendly, convenient user’s operation, maintenance, debugging and use.

Taiwan reaches the BW series frequency changer’s on compound -like continual drawing machine application

The drawing machine is in the metal wire rod processing important equipment, uses in processing the metal original material Cheng Ge to plant the specification wire rod. The drawing machine by puts parts and so on line, wiredrawing, water cooling, recover of wire copper continuous extrusion machine and row of line is composed, in which electric drive part mainly by puts the line electrical machinery, the recover of wire electrical machinery and the row of line electrical machinery realizes, its production quality and the efficiency say very important regarding the enterprise. The drawing machine may divide into the pulley type, conciliatory -like, the orthoscopic three kinds. From the product terminal, the drawing machine may divide into Dollar machine, pulls machine, slightly pulls machine, micro pulls machine; But from the drawing machine internal control way and the structure, may divide into the water tank type, pulley type, straight forward system and so on main several kinds. Regarding the various requirement, the different precision different specification’s product, the different metal type, may choose the different specification the wiredrawing machinery. Regarding the copper aluminum parent metal’s electric wire electric cable Production enterprise, the divariant frequency control system pulls machine the application to be quite widespread thin, relatively speaking, its request’s control performance is also low, but regarding the majority of steel wire aluminum continuous extrusion machine Production enterprise, in view of the steel products characteristic, its accuracy requirement and the drawing stability is high, therefore the use straight forward system drawing machine are many, different wiredrawing machinery, its work process basic same:
Puts the line: the l tinsel puts the link speed, regarding the entire drawing machine link, its control not high accuracy request, to the part divariant frequency control system wiredrawing machinery, even may stretch using the wiredrawing link’s silk thread tensity through the disc. To the majority of wiredrawing machinery, puts the line the control is actuates the paying out machine through the frequency changer to realize.
Wiredrawing: the l wiredrawing copper and aluminum wire drawing machine link is the drawing machine most important link. The different metal material, the different product precision and the request, the wiredrawing link has the very big difference, the divariant frequency control system drawing machine wiredrawing part with puts a line partial common electrical machinery, the tinsel through internal cone pulley’s guiding, after mold, but stretches gradually. But the straight forward system drawing machine stretches the efficiency to be high, to each wiredrawing working procedure, needs an electrical machinery to lead, therefore its control is also most complex.
The compound -like continual drawing machine is one kind uses in drawing the metal wire rod straight forward system continual drawing machine, will compose or two continual drawing machine’s all wire drawing machine single drawing machines distributes abreast in row according to 2~4 rows and by the horizontal form simultaneously places, in has on the vertical plane rack, all mold box installment also will be located on the rack and causes it to have certain included angle with the horizontal plane, the product has occupies a land area few, is advantageous in the enhancement labor productivity and realizes the health and the civilizing production.
The compound -like continual drawing machine is parallel arranges 2-4 row straight forward system continual drawing machine, its transmission, the lubrication, cooling and the control and the erectness straight forward system drawing machine is the same. This aircraft altogether has 10 cone pulleys, 1 drawer roller, 1 receives the winding reel, 11 molds, as well as 11 swing links, biggest coil in diameter 2.4mm, smallest going beyond a line diameter 0.3mm, most altitude speed 2.5m/s. The cone pulley diameter is 250mm, tows the wheel diameter is 360mm, receives the winding reel most minor die wire drawing machine diameter is 280mm. Raw material wire rod stretches through 11 mold’s 11 levels, turns needs the line diameter the end product wire rod. Each cone pulley by 1 motor control, the drawer roller and receives the winding reel also separately by 1 motor control. Each cone pulley disposition swing link, takes when the permanent tensity control uses. Each electrical machinery through the speed reducer and the solderless joint, the reduction gear ratio following table 1 shows (reduction gear ratio G is load side gear/electrical machinery side gear) the compound -like drawing machine’s frequency conversion permanent tensity actuation goal is to guarantee in moves in the process the silk thread tensity to be constant. According to the mechanism and the material difference, the permanent tensity control’s method divides into two kinds generally: 1 positive governing electrical machinery output torque, 2 constant guarantees the tensity through the control speed constant. Through to mechanism’s hydraulic automatic drawing machine analysis, this project uses through the control speed method comes the indirect operation tensity constant.