CN204711034U - The automatical and efficient synchronous feed appliance of punch press - Google Patents

Abstract

The utility model relates to the automatical and efficient synchronous feed appliance of a kind of punch press.Comprise: one, running part, the power of punch crank synchronously can be passed to controller by rotation mode by it; Two, controller part, can pass to loader part coaster by the power that running part transmits, thus makes coaster rhythmical to transferring raw material in diel; Three, loader part, for clamping the raw material wanting punching press, under the transport of coaster, carries in mould according to the lifting of diel is rhythmical.The utility model while punch press work, can realize self-feeding by linkage driving parts, thus increases work efficiency; For the type of stamping products without particular/special requirement, the scope of application is wider; The utility model, for the appearance and size of punching press raw material, without excessively severe requirement, can utilize by secondary for leftover pieces especially; The utility model is than numerical control press, and cost is low, is easy to operation, for ease of maintenaince.

Description

The automatical and efficient synchronous feed appliance of punch press

Technical field

The present invention relates to a kind of punching machine auto-feeder, particularly relate to the automatical and efficient synchronous feed appliance of a kind of punch press.

Background technology

When carrying out punching press to some little shape stamping products, the feed appliance of punch press has numerical control and mechanical two types; Numerical-control feed device is because cost is high, difficult maintenance, also higher to the skill set requirements of operator, thus makes many users be unwilling to use; And the drawback of mechanical feed appliance often has certain requirement to raw-material appearance and size and makes it have certain limitation in use, such as some feed appliance can only send the raw material of the band shape of fixed dimension; Especially for the available raw material of some secondaries, a lot of punch press user also needs the manual feeding of people, and this makes operating efficiency be subject to certain restrictions, and user security can not get ensureing.

Summary of the invention

The object of the present invention is to provide the synchronous auto-feeder of a kind of punch press.It when punch press works, along with the lifting of diel, can realize self-feeding by linkage driving device, enhances productivity, and ensures the safety of operator.

The present invention is achieved through the following technical solutions: the automatical and efficient synchronous feed appliance of a kind of punch press, and it comprises following three parts:

One, running part, it can pass to controller by rhythmical for the power of punch crank, comprises left fork, left transverse arm, drive sprocket, punch crank, chain, gear-box, the first sector gear, driven pulley, push arm axle, push arm, push arm axle adjustable plate, driven sprocket, the first power transmission shaft, the second sector gear, second driving shaft; It is characterized in that: described drive sprocket and punch crank coaxial linkage are also in transmission connection by chain and driven sprocket, driven sprocket and the first sector gear are by the first power transmission shaft coaxial linkage, first drive axis is connected on gear-box, second sector gear is connected with the first quadrant drive, and by second driving shaft and driven pulley coaxial linkage, second driving shaft and gear-box are rotationally connected; Gear-box is fixedly connected with support bracket fastened left fork, left transverse arm; Push arm axle and push arm are articulated and connected, and are connected with driven pulley bias by push arm axle adjustable plate; And can according to the difference of stamped workpieces size dimension, push arm axle eccentric throw is on the driven wheel regulated by regulating push arm axle adjustable plate position on the driven wheel, thus the distance regulating push arm single to advance, make the advance distance that feed appliance single feed reaches suitable; The power of punch crank and frequency are passed to push arm by the transmission of each linkage driving parts by it, make the linear reciprocating motion of push arm and punch crank same frequency.

Two, controller part, the power that running part can transmit by it passes to material loading part coaster according to the requirement of operator rhythmically, thus make coaster rhythmical to transferring raw material in diel, comprise front transverse arm, coaster, push arm, joystick, fixing mainboard, gear plate A, control mobile jib, pull bar, check spring, non-return block arm-tie, non-return block, position retaining plate B, pushing block, pushing block spring, gear plate C, pushing block arm-tie; It is characterized in that: described fixing mainboard the gear plate A, gear plate B, the gear plate C that are fixedly connected with it, fixing mainboard is fixedly connected on the lower left of transverse arm before fixed support; Gear plate A, check spring, non-return block, non-return block arm-tie, position retaining plate D, pushing block spring, pushing block, pushing block arm-tie, gear plate C successively, coaxial sleeve is through at and controls outside mobile jib; The front end being through at push arm is overlapped in the upper end of pushing block also can by push arm driven forward, and when pushing block is by push arm driven forward, it can block control mobile jib and move forward the distance equal with push arm; When push arm retreats, under the effect of pushing block spring, pushing block also retreats thereupon, and non-return block is under the effect of check spring, and have the anti-effect engaged to controlling mobile jib, when pushing block retreats, controlling mobile jib can not retreat; Under the acting in conjunction of pushing block and non-return block, controlling mobile jib can only unidirectionally advance, and can not retreat; Pull bar and joystick chain connection, pull bar is fixedly connected with non-return block arm-tie; Pull bar is fixedly connected with pushing block arm-tie; When pulling joystick, pulling by torque arm, non-return block arm-tie and pushing block arm-tie are promoted respectively, and elastic force effect that non-return block and pushing block overcome spring moves forward a segment distance respectively, at this moment non-return block and pushing block become vertical state by heeling condition respectively, and control mobile jib is lost to the effect of locking, at this moment control mobile jib can move left and right freely, thus can be returned to next feeding process; Set screw is for regulating the locking dynamics of non-return block.

The effect of described controller part can will come from punch crank and change into the unidirectional ahead running with the control mobile jib of push arm same frequency with the linear reciprocating motion of the push arm of bent axle same frequency, and realize the unidirectional feeding campaign of coaster and punch press same frequency by the interlock controlling mobile jib and coaster; By the control of joystick, this feeding campaign can be made repeatedly to realize; Right transverse arm is for installing the supporting parts such as automatic material connection hand.

Three, loader part, for clamping the raw material wanting punching press, and carry under the transport of coaster in mould according to the lifting of diel is rhythmical, described loader part, it comprises coaster and rail portion, clip feeder part, drop guide part:

Described coaster and rail portion, comprise rail and rail under coaster on coaster and left track that they are fixedly connected with at connector and right track fastening; Coaster to be connected on coaster under rail and coaster between rail by four pulley slippages, and be fixedly connected with coaster left arm and left fixed head on the left of it, right side is fixedly connected with coaster right arm and right fixed head; The left end of coaster left arm and the right-hand member of coaster right arm are fixedly connected with left mobile jib securing member and right mobile jib securing member respectively, and they are fixedly sleeved with the two ends, left and right controlling mobile jib respectively; On coaster, rail is fixedly connected with support bracket fastened front transverse arm, and under coaster, rail is fixedly connected with support bracket fastened lower carriage; The left fixed head of coaster is fixedly connected with clip feeder right arm with clip feeder left arm respectively with right fixed head; And according to the height of mould the height of adjustable clamp glassware.

Described clip feeder part, comprise train wheel bridge and lower plate, the two ends, left and right of lower plate are fixed with clip feeder left arm and material folding right arm respectively, the two ends, left and right of train wheel bridge and lower plate are flexibly connected by left tensioned screw and right tensioned screw respectively, middle by clamping plate spring top pressure, the lower end of left tensioned screw has nut to lock, and the eccentric shaft of upper end and the eccentric strainer of left cylindricality is articulated and connected.The lower end of right tensioned screw has nut to lock, and the eccentric shaft of upper end and the eccentric strainer of right cylindricality is articulated and connected; The eccentric strainer of left cylindricality and the eccentric strainer of right cylindricality are articulated and connected by the two ends of upper strainer connecting rod and lower strainer connecting rod respectively; The eccentric shaft of the eccentric strainer of left cylindricality extends back and fixedly handle is housed, and extend forward and fixedly shift fork is housed, shift fork docks with the shift fork interface linkage of drop guide; Carrying handle, under the effect of strainer and spring, train wheel bridge can close up and down.

Described drop guide, comprise guide frame, fixed screw is equipped with in the left and right sides of guide frame, for guide frame being fixedly mounted on the left side of work bench of punch press, height is concordant with the lower die orifice of diel, direction is parallel with pulley rail, and the left side of guide frame is connected with shift fork interface, and shift fork interface moves under being fixedly connected with arm-tie and also driving arm-tie under the rotation of shift fork; The lower end of arm-tie is socketed on the outside of rotating shaft torque arm, and rotating shaft torque arm and many little armshafts are fixedly connected on the side of rotating shaft respectively, and axis of rotation is connected to the inner side of guide frame; The other end of little armshaft is hingedly connected with position limiting pile, and position limiting pile is movably connected in the side that guide frame is equipped with shift fork interface; When arm-tie does the motion of rising or declining, in rotating shaft torque arm, driving position limiting pile to do under the driving of rotating shaft and little armshaft take rotating shaft as the coaxial swing in axle center, and main spring is socketed on one end of rotating shaft, for the revolution of rotating shaft; Thus realize by moving handle under the linkage driving of each parts, position limiting pile also moves up and down thereupon; When position limiting pile is for limiting raw material material loading, the position that raw material plate enters to stretch, when clip feeder clamped closed, position limiting pile declines, and when clip feeder is opened, position limiting pile rises.

Operation principle of the present invention is as follows: when slider of punch starts to run downwards, bent axle starts to rotate under the drive of each linkage driving parts, drive driven pulley turns clockwise, eccentric fixed installation push arm axle on the driven wheel drives push arm and pushing block to do reciprocating linear motion, under the effect of pushing block and non-return block, drive and control the unidirectional advance of mobile jib, control mobile jib to be then fixedly connected with coaster, coaster is equipped with clip feeder, thus the raw material plate in drive clip feeder does rhythmical forward travel, drop guide is had before clip feeder, the position fixed when position limiting pile on drop guide limits raw material material loading, the distance of push arm single driven forward is the diameter that bias is fixed on the push arm axle on driven pulley and rotates a circle under the drive of driven pulley, and the extreme position that push arm axle rotates to high order end is rear stop, the extreme position that push arm axle rotates to low order end is front stop.

The start-stop position of the present invention to push arm axle is following design: when the slide block of punch press stops at top dead centre, push arm axle stops at the position that rear stop rotates about 20 degree of angles clockwise, and the position now limited according to the stake of guide frame upper limit in coaster clip feeder clips raw material plate, now plate moves before the raw material plate that coaster clips is moved on to lower die orifice by joystick and prepares punching press, when slider of punch runs down to lower dead center matched moulds, at this moment push arm axle has been crossed front stop and has been run to the position that front stop is rotated down 20 degree of angles clockwise, push arm and pushing block also start slow astern segment distance, because controlling mobile jib, there is under the effect of each parts of controller single progressive characteristic, now control mobile jib together with the raw material plate in coaster clip feeder at front stop, namely the lower die orifice of raw material plate mould has stopped to have stayed a period of time in advance, when slider of punch matched moulds terminates to get back to top dead centre, push arm axle has also got back to a upper original position together with push arm and pushing block, prepare next impulse stroke.

Compared to prior art, beneficial effect of the present invention is: 1. the present invention while punch press work, can realize self-feeding by linkage driving parts, thus increase work efficiency.

2. the present invention is for the type of stamping products without particular/special requirement, and the scope of application is wider.

3. the present invention is for the appearance and size of punching press raw material, without excessively severe requirement, can utilize by secondary especially for leftover pieces.

4. the present invention is than numerical control press, and cost is low, is easy to operation, for ease of maintenaince.

5. security performance of the present invention is high, and the safety of operator can fully be ensured.

Accompanying drawing explanation

Fig. 1 is one of structure chart of running part of the present invention;

Fig. 2 is the structure chart two of running part of the present invention;

Fig. 3 is the structure chart of control section of the present invention;

Fig. 4 is loader part coaster of the present invention and track structure figure;

Fig. 5 is loader part clip feeder structure chart of the present invention;

Fig. 6 is the structure chart of loader part strainer of the present invention;

Fig. 7 is the structure chart of loader part guide frame of the present invention;

Fig. 8 is the position limiting pile structure chart of loader part guide frame of the present invention;

Fig. 9 is the support bracket fastened structure chart of the present invention;

Figure number illustrates: 1. left fork, 2. left transverse arm, 3. right fork, 4. right transverse arm, 5. transverse arm before, 501. lower carriage, 6. coaster, 7. rail on coaster, 8. left fixed head, 9. coaster left arm, 10. rail under coaster, 11. left track fastenings, 12. right mobile jib securing members, 13. pulleys, 14. coaster right arms, 15. right fixed heads, 16. right track fastenings, 17. left mobile jib securing members, 18. drive sprockets, 19. punch cranks, 20. chains, 21. gear-boxes, 22. first sector gears, 23. driven pulleys, 24. push arm axles, 25. push arms, 26. joysticks, 27. fixed heads, 28. gear plate A, 29. control mobile jib, 30. pull bars, 31. non-return block springs, 32. non-return block arm-ties, 33. non-return blocks, 34. set screw, 35. gear plate B, 36. pushing blocks, 37. pushing block springs, 38. gear plate C, 39. pushing block arm-ties, 40. push arm axle adjustable plates, 41. shift forks, the eccentric strainer of 42. left cylindricality, 43. train wheel bridges, 44. handles, 45. clip feeder left arms, 46. lower plates, 47. left tensioned screws, strainer connecting rod on 48., 49. times strainer connecting rods, 50. clip feeder right arms, the eccentric strainer of 51. right cylindricality, 52. right tensioned screws, 53. clamping plate springs, 54. shift fork interfaces, 55. arm-ties, 56. position limiting piles, 57. guide framves, 58. rotating shaft torque arm, 59. rotating shafts, 60. little armshafts, 61. fixed screws, 62. main springs, 63. driven sprockets, 64. first power transmission shafts, 65. second sector gears, 66. second driving shafts.

Detailed description of the invention

Below in conjunction with explanation drawings and Examples, content of the present invention is described in detail.

The automatical and efficient synchronous feed appliance of a kind of punch press, it comprises following three parts:

One, running part, as shown in Figure 1, Figure 2, it can pass to controller by rhythmical for the power of punch crank 19, comprises left fork 1, left transverse arm 2, drive sprocket 18, punch crank 19, chain 20, gear-box 21, first sector gear 22, driven pulley 23, push arm axle 24, push arm 25, push arm axle adjustable plate 40, driven sprocket 63, first power transmission shaft 64, second sector gear 65, second driving shaft 66; It is characterized in that: described drive sprocket 18 is with punch crank 19 coaxial linkage and be in transmission connection by chain 20 and driven sprocket 63, driven sprocket 63 and the first sector gear 22 are by the first power transmission shaft 64 coaxial linkage, first power transmission shaft 64 rotates and is connected on gear-box 21, second sector gear 65 and the first sector gear 22 are in transmission connection, and by second driving shaft 66 and driven pulley 23 coaxial linkage, second driving shaft 66 and gear-box 21 are rotationally connected; Gear-box 21 is fixedly connected with support bracket fastened left fork 1, left transverse arm 2; Push arm axle 24 and push arm 25 are articulated and connected, and are connected with driven pulley 23 bias by push arm axle adjustable plate 40; And can according to the difference of stamped workpieces size dimension, the eccentric throw of push arm axle 24 on driven pulley 23 is regulated by regulating the position of push arm axle adjustable plate 40 on driven pulley 23, thus the distance regulating push arm 25 single to advance, make the advance distance that feed appliance single feed reaches suitable; The power of punch crank 19 and frequency are passed to push arm 25 by the transmission of each linkage driving parts by it, make the linear reciprocating motion of push arm 25 and punch crank 19 same frequency.

Two, controller part, as Fig. 3, Fig. 9, the power that running part can transmit by it passes to material loading part coaster 6 according to the requirement of operator rhythmically, thus make coaster 6 rhythmical to transferring raw material in diel, comprise front transverse arm 5, coaster 6, push arm 25, joystick 26, fixing mainboard 27, gear plate A28, control mobile jib 29, pull bar 30, check spring 31, non-return block arm-tie 32, non-return block 33, position retaining plate B35, pushing block 36, pushing block spring 37, gear plate C38, pushing block arm-tie 39; It is characterized in that: described fixing mainboard 27 the gear plate A28, gear plate B35, the gear plate C38 that are fixedly connected with it, fixing mainboard 27 is fixedly connected on the lower left of transverse arm 5 before fixed support; Gear plate A28, check spring 31, non-return block 33, non-return block arm-tie 32, position retaining plate D35, pushing block spring 37, pushing block 36, pushing block arm-tie 39, gear plate C38 successively, coaxial sleeve is through at and controls outside mobile jib 29; The front end being through at push arm 25 is overlapped in the upper end of pushing block 36 also can by push arm 25 driven forward, and when pushing block 36 is by push arm 25 driven forward, it can block control mobile jib 29 and move forward the distance equal with push arm 25; When push arm 25 retreats, under the effect of pushing block spring 37, pushing block 36 also retreats thereupon, and non-return block 33 is under the effect of check spring 31, and have the anti-effect engaged to controlling mobile jib 29, when pushing block 36 retreats, controlling mobile jib 29 can not retreat; Under the acting in conjunction of pushing block 36 and non-return block 33, controlling mobile jib 29 can only unidirectionally advance, and can not retreat; Pull bar 30 and joystick 26 chain connection, pull bar 30 is fixedly connected with non-return block arm-tie 32; Pull bar 30 is fixedly connected with pushing block arm-tie 39; When pulling joystick 26, by pulling of torque arm 30, non-return block arm-tie 32 and pushing block arm-tie 39 are promoted respectively, and elastic force effect that non-return block 33 and pushing block 36 overcome spring moves forward a segment distance respectively, at this moment non-return block 33 and pushing block 36 become vertical state by heeling condition respectively, and control mobile jib 29 is lost to the effect of locking, at this moment control mobile jib 29 can move left and right freely, thus can be returned to next feeding process; Set screw 34 is for regulating the locking dynamics of non-return block 33.

The effect of described controller part can will come from punch crank 19 and change into the unidirectional ahead running with the control mobile jib 29 of push arm 25 same frequency with the linear reciprocating motion of the push arm 25 of bent axle 19 same frequency, and realize the unidirectional feeding campaign of coaster 6 and punch press same frequency by controlling mobile jib 29 and the interlock of coaster 6; By the control of joystick 26, this feeding campaign can be made repeatedly to realize; Right transverse arm 4 is for installing the supporting parts such as automatic material connection hand.

Three, loader part, as Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, for clamping the raw material wanting punching press, and carry under the transport of coaster 6 in mould according to the lifting of diel is rhythmical, described loader part, it comprises coaster and rail portion, clip feeder part, drop guide part:

Described coaster and rail portion, comprise rail 7 and rail under coaster 10 on coaster and left track that they are fixedly connected with at connector 11 and right track fastening 16.Coaster 6 to be connected on coaster under rail 7 and coaster between rail 10 by the slippage of 4 pulleys 13, and be fixedly connected with coaster left arm 9 and left fixed head 8 on the left of it, right side is fixedly connected with coaster right arm 14 and right fixed head 15; The left end of coaster left arm 9 and the right-hand member of coaster right arm 14 are fixedly connected with left mobile jib securing member 17 and right mobile jib securing member 12 respectively, and they are fixedly sleeved with the two ends, left and right controlling mobile jib 29 respectively; On coaster, rail 7 is fixedly connected with support bracket fastened front transverse arm 5, and under coaster, rail 10 is fixedly connected with support bracket fastened lower carriage 501; The left fixed head 8 of coaster 6 is fixedly connected with clip feeder right arm 50 with clip feeder left arm 45 respectively with right fixed head 15; And according to the height of mould the height of adjustable clamp glassware.

Described clip feeder part, comprise train wheel bridge 43 and lower plate 46, the two ends, left and right of lower plate 46 are fixed with clip feeder left arm 45 and material folding right arm 50 respectively, the two ends, left and right of train wheel bridge 43 and lower plate 46 are flexibly connected by left tensioned screw 47 and right tensioned screw 52 respectively, pressure is pushed up by clamping plate spring 53 in centre, the lower end of left tensioned screw 47 has nut to lock, and the eccentric shaft of upper end and the eccentric strainer 42 of left cylindricality is articulated and connected.The lower end of right tensioned screw 52 has nut to lock, and the eccentric shaft of upper end and the eccentric strainer 51 of right cylindricality is articulated and connected.The eccentric strainer 42 of left cylindricality and the eccentric strainer 51 of right cylindricality are articulated and connected by the two ends of upper strainer connecting rod 48 and lower strainer connecting rod 49 respectively.The eccentric shaft of the eccentric strainer 42 of left cylindricality extends back and handle 44 is fixedly housed, and extend forward and shift fork 41 is fixedly housed, shift fork 41 links with the shift fork interface 54 of drop guide and docks.Carrying handle 44, under the effect of strainer and spring, train wheel bridge 43 can close up and down.

Described drop guide, comprise guide frame 57, fixed screw 61 is equipped with in the left and right sides of guide frame 57, for guide frame 57 being fixedly mounted on the left side of work bench of punch press, height is concordant with the lower die orifice of diel, direction is parallel with pulley rail, and the left side of guide frame 57 is connected with shift fork interface 54, and shift fork interface 54 is fixedly connected with arm-tie 55 and can drives arm-tie 55 times movements under the rotation of shift fork 41; The lower end of arm-tie 55 is socketed on the outside of rotating shaft torque arm 58, and rotating shaft torque arm 58 and many little armshafts 60 are fixedly connected on the side of rotating shaft 59 respectively, and rotating shaft 59 is rotationally connected with the inner side of guide frame 57; The other end of little armshaft 60 is hingedly connected with position limiting pile 56, and position limiting pile 56 is movably connected in the side that guide frame 57 is equipped with shift fork interface 54.When arm-tie 55 does the motion of rising or declining, in rotating shaft torque arm 58, the coaxial swing that to drive position limiting pile 56 to do with rotating shaft 59 under the driving of rotating shaft 59 and little armshaft 60 be axle center, main spring 62 is socketed on one end of rotating shaft 59, for the revolution of rotating shaft 59; Thus realize by moving handle 44 under the linkage driving of each parts, position limiting pile 56 also moves up and down thereupon.When position limiting pile 56 is for limiting raw material material loading, the position that raw material plate enters to stretch, when clip feeder clamped closed, position limiting pile 56 declines, and when clip feeder is opened, position limiting pile 56 rises.

Operation principle of the present invention is as follows: when slider of punch starts to run downwards, bent axle 19 starts to rotate under the drive of each linkage driving parts, driven pulley 23 is driven to turn clockwise, the bias push arm axle 24 be fixedly mounted on driven pulley 23 drives push arm 25 and pushing block 36 to do reciprocating linear motion, under the effect of pushing block 36 and non-return block 33, drive and control the unidirectional advance of mobile jib 29, control mobile jib 29 to be fixedly connected with coaster 6, coaster 6 is equipped with clip feeder, thus the raw material plate in drive clip feeder does rhythmical forward travel, drop guide is had before clip feeder, the position fixed when position limiting pile 56 on drop guide limits raw material material loading, the distance of push arm 25 single driven forward is the diameter that bias is fixed on the push arm axle 24 on driven pulley 23 and rotates a circle under the drive of driven pulley 23, and the extreme position that push arm axle 24 rotates to high order end is rear stop.The extreme position that push arm axle 24 rotates to low order end is front stop, the start-stop position of the present invention to push arm axle 24 is following design: when the slide block of punch press stops at top dead centre, push arm axle 24 stops at the position that rear stop rotates about 20 degree of angles clockwise, and the position now limited according to the stake 56 of guide frame 57 upper limit in coaster clip feeder clips raw material plate, now plate moves before the raw material plate that coaster 6 clips is moved on to lower die orifice by joystick 26 and prepares punching press, when slider of punch runs down to lower dead center matched moulds, at this moment push arm axle 24 has been crossed front stop and has been run to the position that front stop is rotated down 20 degree of angles clockwise, push arm 25 and pushing block 36 also start slow astern segment distance, because controlling mobile jib 29, there is under the effect of each parts of controller single progressive characteristic, now control mobile jib 29 together with the raw material plate in coaster clip feeder at front stop, namely the lower die orifice of raw material plate mould has stopped to have stayed a period of time in advance, when slider of punch matched moulds terminates to get back to top dead centre, push arm axle 24 has also got back to a upper original position together with push arm 25 and pushing block 36, prepare next impulse stroke.

Beneficial effect of the present invention is: 1. the present invention while punch press work, can realize self-feeding by linkage driving parts, thus increase work efficiency; 2. the present invention is for the type of stamping products without particular/special requirement, and the scope of application is wider; 3. the present invention is for the appearance and size of punching press raw material, without excessively severe requirement, can utilize by secondary especially for leftover pieces; 4. the present invention is than numerical control press, and cost is low, is easy to operation, for ease of maintenaince; 5. security performance of the present invention is high, and the safety of operator can fully be ensured.

Claims (1)

1. the synchronous auto-feeder of punch press, comprises left fork (1), left transverse arm (2), drive sprocket (18), punch crank (19), chain (20), gear-box (21), the first sector gear (22), driven pulley (23), push arm axle (24), push arm (25), push arm axle adjustable plate (40), driven sprocket (63), the first power transmission shaft (64), the second sector gear (65), second driving shaft (66); It is characterized in that: described drive sprocket (18) is also in transmission connection by chain (20) and driven sprocket (63) with punch crank (19) coaxial linkage, driven sprocket (63) and the first sector gear (22) are by the first power transmission shaft (64) coaxial linkage, first power transmission shaft (64) rotates and is connected on gear-box (21), second sector gear (65) and the first sector gear (22) are in transmission connection, and by second driving shaft (66) and driven pulley (23) coaxial linkage, second driving shaft (66) and gear-box (21) are rotationally connected; Gear-box (21) is fixedly connected with support bracket fastened left fork (1), left transverse arm (2); Push arm axle (24) and push arm (25) are articulated and connected, and are connected with driven pulley (23) bias by push arm axle adjustable plate (40); And can according to the difference of stamped workpieces size dimension, the eccentric throw of push arm axle (24) on driven pulley (23) is regulated by regulating push arm axle adjustable plate (40) position on driven pulley (23), thus the distance regulating push arm (25) single to advance, make feed appliance single feed reach the advance distance of needs; The power of punch crank (19) and frequency are passed to push arm (25) by the transmission of each linkage driving parts by it, make the linear reciprocating motion of push arm (25) and punch crank (19) same frequency.