CN207402858U - A kind of efficient draw cutting means - Google Patents

Abstract

The utility model discloses a kind of efficient draw cutting means, its key points of the technical solution are that including stock shelf, draw body and cut body, the pipe reduction device with feed inlet is provided on draw body, it cuts and feeding slide plate, bearing assembly, positioning component and cutter device is provided on body, the bottom of cutter device is provided with splicing frame, it the draw body and cuts and is provided with connection component between body, connection component is guided pipe fitting to body is cut by draw body, has achieved the effect that improve production efficiency.

Description

A kind of efficient draw cutting means

Technical field

The utility model is related to bicycle manufacture field, more particularly to a kind of efficient draw cutting means.

Background technology

The frame body of bicycle includes the pipe fitting base part of a variety of iron and steel material qualities, in order to meet use demand, pipe fitting need into Row draw process and process is cut, which completes usually using machine for shrinking and guillotine.

Existing to can refer to the Chinese patent that notification number is CN202479247U, it discloses a kind of high-precision heat pipe contractions Machine including workbench, first driving means, rotating wheel and mold, is provided with first driving means, in work in the bottom of workbench Make to be provided with mold above platform, cavity is provided in mold, on the table side, die inlet end is arranged in parallel with two and leads Rail is provided with slide plate on guide rail, and the upper end of slide plate is provided with clamping fixture table, the folder of clamping workpiece is provided on clamping fixture table Tool asks that screw rod one side is connected with the second driving device through there is screw rod in slide plate and clamping fixture table, in the setting of clamping fixture table bottom There is the threaded block with screw flight cooperation.

It is existing to can refer to the Chinese patent that notification number is CN204975529U, it discloses a kind of pipe cutting machine, including machine Frame, the first motor is provided in rack, and the first motor is connected with the slide that can be slided in rack, first is provided with above slide Fixture, the external hydraulic cylinder of the first fixture, the first fixture clamp steel pipe to be cut, are additionally provided with first support in rack, first Lifting gear is provided on frame, first support both ends set cutter device, external second motor of cutter device, cutting dress respectively It puts and the second fixture is correspondingly arranged on lower methods, rack, the second fixture clamps steel pipe to be cut.

In actual production process, after the completion of draw process, worker, which needs pipe fitting being transported to, to be cut at process into traveling one The processing of cutting of step, the usual heavier-weight of pipe fitting used in bicycle, quantity is more, and transport process needs to expend many manpowers Material resources extend the production cycle, reduce production efficiency.

Utility model content

In view of the shortcomings of the prior art, the utility model provides a kind of efficient draw cutting means, production effect is improved to reach The effect of rate.

The above-mentioned technical purpose of the utility model technical scheme is that：

A kind of efficient draw cutting means, including stock shelf, draw body and cut body, band are provided on draw body There is the pipe reduction device of feed inlet, cut and feeding slide plate, bearing assembly, positioning component and cutter device are provided on body, cut The bottom of device is provided with splicing frame, the draw body and cuts and is provided with connection component between body, and connection component will manage Part is guided by draw body to cutting body.

By using said program, pipe fitting to be processed is placed in stock shelf, pipe fitting is sent into the feed inlet progress draw adds Work, after the draw machines, pipe fitting leaves draw body, and passes through connection component and be directly entered the feeding cunning cut on body Plate slips into bogey, and position is determined by positioning component, completes to cut by cutter device.By setting connection component will The draw of pipe fitting, cut process connection, omit and pipe fitting be moved to the step of cutting process, improve the draw, cut it is whole Production efficiency.

Preferably, the connection component includes connecting plate, one end of connecting plate is located at pipe reduction device lower section, connect press it is another One end is located at the top of feeding slide plate.

By using said program, the pipe fitting machined by pipe reduction device falls into connecting plate, is rolled by connecting plate Expect slide plate, cut process into subsequent, have the advantages of simple structure and easy realization, convenient for observing the situation of movement in pipe fitting process, Convenient for making adjustment at any time.

Preferably, the connecting plate is oblique, the end position that connecting plate is located at below pipe reduction device is higher, connecting plate The relatively low one end in position is provided with catch, and driving pipe fitting is provided on connecting plate and bypasses the driving group that catch is rolled to feeding slide plate Part.

By using said program, connecting plate is set obliquely, is improved the easness that pipe fitting rolls to feeding slide plate, is avoided It moves round about, influences process, pipe fitting is tumbled to catch, is stopped and stopped by catch, and afterwards, drive component drives Dynamic pipe fitting rolls around catch to feeding slide plate, and stable pipe fitting rotating direction is played the role of in the setting of catch, avoids pipe fitting certainly Long by rolling distance, there is deflection in route, improves the smoothness of production process.

Preferably, the connecting plate at the catch is provided with engraved structure, pushing component includes mandril, and the top surface of mandril is in Skewed, mandril top surface is relatively low close to a side position of feeding slide plate, and mandril bottom, which is connected with, pushes component, pushes Component driver Mandril is upward through engraved structure and jacks up pipe fitting.

It by using said program, pushes Component driver mandril and moves upwards, mandril is through engraved structure with being located at connection Pipe fitting bottom on plate abuts, and since the top surface of mandril is tilted to feeding slide plate one side, pipe fitting rolls under self gravitation effect Feeding slide plate, the setting of this kind of structure are easily achieved the automatic of pipe fitting and tumble, and improve automation and the production efficiency of production.

Preferably, described push component to push cylinder.

By using said program, the time that the active force of cylinder is quick, and shortening pipe fitting is jacked up is pushed so that pipe fitting energy The stability and efficiency that roll to feeding slide plate, improve production process of enough fast and stables.

Preferably, the connection plate top surface is equipped with noise reduction layer.

By using said program, pipe fitting will not directly be occurred violent by being dropped down onto under pipe reduction device on connecting plate with connecting plate Strong collision, the setting of noise reduction layer reduce the noise that pipe fitting is generated with connecting plate collision, improve the comfort level of workshop condition.

Preferably, the noise reduction layer material is rubber.

By using said program, rubber anti-acoustic capability is good, and wearability is good, adapts to continue present in pipe fitting production process The situation of frottage.

Preferably, the stock shelf is provided with storage tank, lifting device is provided in storage tank, stock shelf is close to machine for shrinking Temporary plate is provided at the top of body, lifting device transmits pipe fitting to be processed from storage tank to temporary plate.

By using said program, the pipe fitting to be processed of bulk deposition is pre-placed in the storage tank of stock shelf, is carried It rises device constantly the pipe fitting in storage tank is delivered up to the temporary plate nearer from feed inlet, improves feeding process The degree of automation improves loading efficiency, and then improves production efficiency.

Preferably, the lifting device includes intermeshing sprocket wheel and chain, the chain of carrying pipe fitting is provided on chain Plate, sprocket wheel are connected with power set.

By using said program, power set band movable sprocket rotates, and then drives the chain movement being meshed with sprocket wheel, And then the carrier bar movement of carrying pipe fitting is driven, it has the advantages of simple structure and easy realization, and the transfer capability of sprocket wheel and chain is strong, avoids chain Plate returns, and improves the continuity and smooth degree for being delivered up pipe fitting.

Preferably, the power set are the promotion motor being connected with sprocket wheel.

By using said program, the stabilization of speed of motor, the stabilization of speed of sprocket wheel are promoted, and then is carried for the conveying of pipe fitting For the power of uniform and stable, the stationarity and uniformity of raising pipe fitting transmission process.

In conclusion the utility model has the advantages that：

1st, by draw body and cutting and setting connection component between body, by the draw.Two big processes are cut to connect Come, omit and pipe fitting is moved to the step of cutting process, improve the draw, cut whole production efficiency.

2nd, by setting lifting device in the storage tank of rack, constantly by pipe fitting to be processed be up-shifted to close into The position of material mouth, worker stand up to pick and place pipe fitting, mitigate worker labour, and improve the automatic of feeding process without bending over repeatedly Change degree improves loading efficiency, and then improves production efficiency.

Description of the drawings

Fig. 1 is the structure diagram of the utility model；

Fig. 2 is the structure diagram at another visual angle of the utility model；

Fig. 3 is the structure diagram for embodying structure at stock shelf and draw body；

Fig. 4 is the structure diagram for embodying stock shelf structure；

Fig. 5 is the structure diagram for embodying lifting device structure；

Fig. 6 is the structure diagram for embodying structure at temporary plate；

Fig. 7 is the close-up schematic view at A in Fig. 6；

Fig. 8 is the structure diagram for embodying connecting component structure；

Fig. 9 is the structure diagram for cutting housing construction；

Figure 10 is the close-up schematic view at B in Fig. 9.

In figure, 1, stock shelf；11st, storage tank；12nd, lifting device；121st, driving wheel；1211st, motor is promoted；1212nd, pass Dynamic band；122nd, driven wheel；123rd, chain；124th, carrier bar；1241st, support plate；1242nd, fixed plate；13rd, plate is kept in；14th, baffle；15、 Upper push cylinder；16th, push rod；2nd, draw body；21st, pipe reduction device；211st, feed inlet；22nd, catching robot；221st, gas is captured Cylinder；23rd, manipulator is fed；231st, cylinder is fed；3rd, connection component；31st, connecting plate；311st, noise reduction layer；32nd, catch；33rd, push up Bar；331st, cylinder is pushed；4th, body is cut；41st, feeding slide plate；42nd, workbench；421st, block；43rd, cutter device；431st, cut Cut cylinder；44th, bearing assembly；441st, bearing plate；442nd, discharging cylinder；45th, positioning component；451st, locating piece；452nd, gas is positioned Cylinder；46th, blanking slide bar；47th, splicing frame；5th, moving assembly；51st, leading screw；511st, mobile cylinder；52nd, screw；6th, pipe fitting；7th, machine Body plate.

Specific embodiment

The utility model is described in further detail below in conjunction with attached drawing, word " preceding " used in the following description, " rear ", "left", "right", "up" and "down" refer to the direction in attached drawing, word " bottom surface " and " top surface ", " interior " and " outer " difference It refers to towards or away from the direction of particular elements geometric center.

A kind of efficient draw cutting means, as shown in Figure 1, including stock shelf 1, draw body 2 and cutting body 4, the draw It body 2 and cuts and is provided with connection component 3 between body 4（With reference to figure 8）.

As depicted in figs. 1 and 2, stock shelf 1 stands on ground, and with reference to Fig. 3 and Fig. 4, stock shelf 1 carries storage tank 11, houses The top of slot 11 and a side are opening-like.11 bottom surface of storage tank is tilted close to a lateral lower of rack so that storage tank 11 bottom surfaces are skewed plane.Heap amplification quantity pipe fitting 6 to be processed in storage tank 11, the axis of pipe fitting 6 are located in horizontal plane. Since 11 bottom surface of storage tank is oblique, pipe fitting 6 is assembled under self gravitation effect to 11 lower of storage tank.

With reference to Fig. 5,11 lower of storage tank is provided with lifting device 12, and lifting device 12 includes intermeshing sprocket wheel and chain Item 123, sprocket wheel include the driving wheel 121 with rack rotation connection, and the axis of driving wheel 121 is parallel with the axis of pipe fitting 6.Actively It takes turns 121 tops and is provided with the driven wheel 122 being rotatablely connected with rack, the axis of the axis and driving wheel 121 of driven wheel 122 is put down Row, driven wheel 122 is compared with driving wheel 121 closer to rack.Driving wheel 121, which is connected with, promotes motor 1211, driving wheel 121 and driven Transmission belt 1212 is connected between wheel 122.

A plurality of chain 123 is connected between driving wheel 121 and driven wheel 122,123 inner surface of chain is meshed with sprocket wheel. Since the position of driving wheel 121 and driven wheel 122 is set, chain 123 is when close to the transmission of 11 center one side of storage tank, transmission side To oblique, and 123 top of chain is tilted to close to rack one side.

123 outer surface of chain is provided with multiple carrier bars 124, and carrier bar 124 includes support plate 1241 and fixed plate 1242.Support plate 1241 and fixed plate 1242 be cuboid thin plate, length direction is parallel with the axis of sprocket wheel.One length of support plate 1241 One length sides of side and fixed plate 1242 are vertically affixed so that the whole section of carrier bar 124 is L-shaped.

In one side of the chain 123 at 11 center of storage tank, surface and chain of the fixed plate 1242 away from support plate 1241 123 surfaces away from sprocket wheel are affixed.Support plate 1241 is located at 1242 lower section of fixed plate, and one end away from chain 123 is inclined upwardly, carries 1241 upper surface of plate is oblique.Multiple carrier bars 124 are evenly distributed along the length direction of chain 123, and adjacent carrier bar 124 mutually leans on Closely.

It promotes motor 1211 to rotate, driving wheel 121 is driven to rotate, and then 122 turns of driven wheel is driven by transmission belt 1212 It is dynamic, by chain 123 carrier bar 124 is driven to move.Pipe fitting 6 rolls to carrier bar 124 under self gravitation effect, until resting on support plate It on 1241, and is moved up with support plate 1241, since support plate 1241 is oblique, improves stability of the pipe fitting 6 on support plate 1241, Pipe fitting 6 is avoided to drop during moving up from support plate 1241.

With reference to Fig. 3, driven wheel 122 is provided with temporary plate 13 close to the one side of rack, keeps in plate 13 close to the one side of rack It tilts down so that 13 top surface of temporary plate is oblique.Temporary 13 top surface of plate is equipped with noise reduction layer 311, and material can be rubber, And one end away from storage tank 11 is vertically connected with baffle 14.

With reference to Fig. 6, the one side that temporary plate 13 is connected with baffle 14 is provided with engraved structure, and the bottom at this, which is provided with, to push away Cylinder 15.The pedestal of cylinder is affixed and rack, telescopic shaft are connected with the push rod 16 being vertically arranged, and the telescopic direction of telescopic shaft is located at In vertical plane.

Fig. 3 is reviewed, pipe fitting 6 rises to 12 top of lifting device by carrier bar 124, fallen to afterwards by carrier bar 124 temporary Plate 13 under self gravitation effect, is scrolled down through up to being stopped by baffle 14, rested on temporary plate 13.At this point, upper push cylinder 15 flexible elongate axis drives push rod 16 to pass through the engraved structure on temporary plate 13, and pipe fitting 6 is jacked up in order to draw body It is fed in 2.

Draw body 2 stands on ground, and top is provided with pipe reduction device 21, and 21 front of pipe reduction device is provided with feed inlet 211. The pipe fitting 6 jacked up by push rod 16 can be sent into feed inlet 211 by worker manually, can also the charging of cooperative mechanical hand.

Charging manipulator 23 is set during cooperative mechanical hand, at face feed inlet 211, and charging manipulator 23 is away from feed inlet 211 one side connection charging cylinder 231.The pedestal of charging cylinder 231 is fixed in rack, and the telescopic direction and rack of telescopic shaft are just Face is vertical, and telescopic shaft is affixed close to one end of feed inlet 211 and the one end of charging manipulator 23 away from feed inlet 211.Feed inlet 211 tops set catching robot 22, and catching robot 22 is connected with crawl cylinder 221.The pedestal of crawl cylinder 221 is fixed on Rack, telescopic shaft and catching robot 22 are affixed, and telescopic direction is vertical with the telescopic direction for feeding cylinder 231.

Catching robot 22 is jacked up between temporary plate 13 and feed inlet 211 toward polyslip, constantly crawl by push rod 16 Pipe fitting 6 is simultaneously transported at feed inlet 211, and afterwards, charging manipulator 23 captures pipe fitting 6, and charging cylinder 231 drives charger Pipe fitting 6 is sent into feed inlet 211 and carries out draw processing by tool hand 23 close to feed inlet 211.The draw completion of processing of pipe fitting 6 Afterwards, feeding cylinder 231 drives charging manipulator 23 to extract pipe fitting 6 out feed inlet 211, unclamps pipe fitting 6, and pipe fitting 6 drops.

Fig. 1 is reviewed, 6 place of dropping of pipe fitting is provided with connection component 3, and connection component 3 includes connecting plate 31.Connecting plate 31 is separate The one of draw body 2 is sloped downwardly so that and 31 top surface of connecting plate is oblique, and 31 top surface of connecting plate is equipped with noise reduction layer 311, Material can be rubber.The relatively low one end of connecting plate 31 is connected with the catch 32 being vertically arranged.

With reference to Fig. 8, the one side that connecting plate 31 is connected with catch 32 is provided with engraved structure, and the bottom at this, which is provided with, to be pushed Cylinder 331.The pedestal for pushing cylinder 331 is fixed in draw body 2, and the telescopic direction of telescopic shaft is located in vertical plane.Push gas The telescopic shaft top of cylinder 331 is connected with the mandril 33 being vertically arranged, and 33 top surface of mandril is inclined surface, and the one of separate draw body 2 End position is relatively low.

The pipe fitting 6 that the draw machines drops down onto connecting plate 31, and under self gravitation effect, scrolls down through until by catch 32 stop, rest on connecting plate 31.At this point, pushing the flexible elongate axis of cylinder 331, mandril 33 is driven to pass through on connecting plate 31 Engraved structure, pipe fitting 6 is jacked up, since the top of mandril 33 is is obliquely installed, pipe fitting 6 rolls downwards under self gravitation effect Fall, into cutting body 4.

Fig. 1 is reviewed, cuts there are two the settings of body 4, stands on body plate 7, body plate 7 is the tablet being placed on ground. 4 top of body is cut as workbench 42, workbench 42 is horizontally disposed flat rectangular body, the length sides phase of two workbench 42 It is adjacent.

With reference to Fig. 9, the edge on two 42 adjacent lengths sides of workbench is connected with the feeding slide plate 41 of strip, feeding The top surface of slide plate 41 is inclined surface, and two feeding slide plates 41 form inclined slideway.The top side location of feeding slide plate 41 is higher One end for feeding beginning, the relatively low one end of top side location is feeding terminal.

With reference to Figure 10, bearing assembly 44 is provided at feeding terminal, bearing assembly 44 includes the bearing plate 441 of L-type, accepts Plate 441 is connected with discharging cylinder 442.The telescopic shaft of discharging cylinder 442 and workbench 42 are affixed, and pedestal and bearing plate 441 are affixed. Bearing plate 441 is provided with block 421 close to the one side of feeding slide plate 41, and block 421 is fixed in workbench 42.

The feeding terminal of feeding slide plate 41 is provided with positioning component 45, positioning component 45 close to the one side at 42 center of workbench Including locating piece 451, locating piece 451 is respectively connected with positioning cylinder 452.The pedestal of positioning cylinder 452 is fixed on workbench 42, stretches Contracting axis and side of the locating piece 451 away from pipe fitting 6 are affixed, and telescopic direction is parallel with the axial direction of pipe fitting 6.

One side of the positioning component 45 away from feeding slide plate 41 is provided with cutter device 43, and cutter device 43 is connected with cutting gas Cylinder 431.The pedestal of cutting cylinder 431 is fixed in workbench 42, and telescopic shaft and cutter device 43 are affixed, telescopic direction and pipe fitting 6 Axis is vertical.

441 bottom of bearing plate is provided with the Buffer Unit of buffering blanking, and the blanking that Buffer Unit includes two elongated rod shapes is slided Bar 46, the top surface of blanking slide bar 46 are inclined surface, and the higher one end of top side location is blanking beginning, top side location it is relatively low one It holds as blanking terminal, blanking beginning is located at 1241 bottom of support plate, and two blanking slide bars 46 form blanking channels.It is set at blanking terminal It is equipped with the rack for accepting pipe fitting 6.

The telescopic shaft of discharging cylinder 442 is in contraction state, and the pipe fitting 6 being temporarily stored on temporary plate 13 is placed in feeding slide plate 41 feeding beginning, the axis direction for making pipe fitting 6 is vertical with the length direction of feeding slide plate 41, and pipe fitting 6 is in self gravitation effect Under tumble to bearing plate 441, the flexible elongate axis of two positioning cylinders 452, drive two locating pieces 451 close to pipe fitting 6, two Locating piece 451 is abutted close to the end face of pipe fitting 6 with two end faces of pipe fitting 6 respectively, and the axial position of pipe fitting 6 is positioned with this.It cuts The flexible elongate axis of cylinder 431 is cut, cutter device 43 is driven to complete the cutting to 6 both ends of pipe fitting close to pipe fitting 6.Discharging cylinder 442 flexible elongate axis, bearing plate 441 move downward, and pipe fitting 6 drops down onto blanking slide bar 46, and is tumbled downwards along blanking slide bar 46 To rack, afterwards, the telescopic shaft of discharging cylinder 442 is shunk, and support plate 1241 rises to home position, completes cutting process.

Fig. 2 is reviewed, two cut the distance between body 4 and can adjust, to adapt to the processing of the pipe fitting 6 of different size. One of them cuts body 4 and is fixed on ground, another cuts and moving assembly 5 is provided between body 4 and body plate 7, mobile Component 5 includes 51 screws 52 of leading screw being threadedly coupled, and leading screw 51 is rotationally connected with body plate 7, the width of axis and workbench 42 It is parallel to spend direction.Screw 52 is cased with outside leading screw 51, screw 52 and the corresponding bottom for cutting body 4 are affixed.One end of leading screw 51 Face is connected with mobile motor, and mobile motor is fixed on body plate 7.

Mobile motor rotates, and leading screw 51 is driven to rotate, so by screw 52 drive it is corresponding cut body 4 closer or far from Another cuts body 4, completes two adjustings for cutting distance between body 4.

The use process of the utility model is as follows：

A large amount of pipe fittings 6 to be processed are placed in advance in storage tank 11, pipe fitting 6 is sent to temporary plate 13 by lifting device 12, Above pushing away motor drives push rod 16 to jack up the pipe fitting 6 on temporary plate 13, at this point, can pipe fitting 6 be sent into feed inlet 211 manually, Can cooperative mechanical hand pipe fitting 6 is sent into feed inlet 211.The pipe fitting 6 that the draw machines falls to connecting plate 31, pushes motor band Dynamic mandril 33 jacks up the pipe fitting 6 on connecting plate 31, and pipe fitting 6 is rolled at cutter device 43 by feeding slide plate 41 and completes to cut It cuts, cuts the pipe fitting 6 finished and tumbled by blanking slide bar 46 to rack completion processing of cutting.The entire draw cuts process automation journey Degree is high, effectively increases production efficiency.

This specific embodiment is only explanation to the utility model, is not the limitation to the utility model, ability Field technique personnel can as needed make the present embodiment the modification of no creative contribution after this specification is read, but As long as it is all protected in the right of the utility model be subject to Patent Law.

Claims (10)

1. a kind of efficient draw cutting means including stock shelf (1), draw body (2) and cut body (4), draw body (2) On be provided with the pipe reduction device (21) with feed inlet (211), cut and feeding slide plate (41), carrying group be provided on body (4) Part (44), positioning component (45) and cutter device (43), the bottom of cutter device (43) are provided with splicing frame (47), and feature exists In：It the draw body (2) and cuts and is provided with connection component (3) between body (4), connection component (3) is by pipe fitting (6) by contracting Pipe body (2) guiding is to cutting body (4).

2. a kind of efficient draw cutting means according to claim 1, it is characterised in that：The connection component (3) includes Connecting plate (31), one end of connecting plate (31) are located at below pipe reduction device (21), connect the other end pressed and be located at feeding slide plate (41) top.

3. a kind of efficient draw cutting means according to claim 2, it is characterised in that：The connecting plate (31) is inclined Shape, the end position that connecting plate (31) is located at below pipe reduction device (21) is higher, and the relatively low one end in connecting plate (31) position is set There is catch (32), driving pipe fitting (6) is provided on connecting plate (31) and bypasses catch (32) to feeding slide plate（41）The driving of rolling Component.

4. a kind of efficient draw cutting means according to claim 3, it is characterised in that：Connection at the catch (32) Plate (31) is provided with engraved structure, and pushing component includes mandril (33), and the top surface of mandril (33) is oblique, mandril (33) top surface Close to feeding slide plate（41）A side position it is relatively low, mandril (33) bottom, which is connected with, pushes component, pushes Component driver mandril (33) it is upward through engraved structure and jacks up pipe fitting (6).

5. a kind of efficient draw cutting means according to claim 4, it is characterised in that：It is described to push component to push gas Cylinder (331).

6. a kind of efficient draw cutting means according to claim 2, it is characterised in that：Connecting plate (31) the top surface paving Equipped with noise reduction layer (311).

7. a kind of efficient draw cutting means according to claim 6, it is characterised in that：Noise reduction layer (311) material For rubber.

8. a kind of efficient draw cutting means according to claim 1, it is characterised in that：The stock shelf (1) is provided with Storage tank (11), storage tank (11) is interior to be provided with lifting device (12), and stock shelf (1) is set close to the top of draw body (2) There is temporary plate (13), lifting device (12) transmits pipe fitting (6) to be processed from storage tank (11) to temporary plate (13).

9. a kind of efficient draw cutting means according to claim 8, it is characterised in that：The lifting device (12) includes Intermeshing sprocket wheel and chain (123) are provided with the carrier bar (124) of carrying pipe fitting (6) on chain (123), and sprocket wheel is connected with Power set.

10. a kind of efficient draw cutting means according to claim 9, it is characterised in that：The power set are and chain Take turns the promotion motor (1211) of connection.