A metal sheet stamping apparatus

Abstract

The application discloses a metal sheet stamping device, and relates to the technical field of metal sheet processing, which comprises a rack, a stamping device, a conveying track, a feeding device and a spacing conveying device. The conveying track is used for moving multiple metal sheets in the front-back direction. The feeding device is used for sequentially feeding the multiple metal sheets into the conveying track. The spacing conveying device is used for keeping the multiple metal sheets on the conveying track apart from each other and sequentially moving the multiple metal sheets from the back to the front to the stamping device. The spacing conveying device can push the corner scraps forward so that the corner scraps can fall from the front end of the conveying track. A waste collecting device is arranged on the rack and is used for collecting the corner scraps falling from the front end of the conveying track. The metal sheet stamping device can keep the multiple metal sheets apart from each other and push the corner scraps into the waste collecting device, thereby reducing the failure rate of the metal sheet stamping device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of metal sheet processing, in particular to a metal sheet stamping device. BACKGROUND

[0002] The metal sheet stamping device is a device for processing specific-shaped workpieces on metal sheets by stamping. The metal sheet stamping device mainly comprises a feeding device and a stamping device. The feeding device is used for feeding the metal sheets into the stamping device one by one, so that the stamping device can stamp the metal sheets to form workpieces and edge and corner scraps. In the prior art, the feeding device pushes the metal sheets in the stock bin into the feeding track one by one, so that the multiple metal sheets in the feeding track are in close contact with each other and are conveyed towards the stamping device under the pushing of the next metal sheet. In the actual processing process, the edge and corner scraps formed by stamping may be stuck on the stamping device, and the stuck edge and corner scraps may affect the normal conveying of the multiple metal sheets, which may easily cause the multiple metal sheets in close contact with each other to be stacked, thereby affecting the normal operation of the metal sheet stamping device and increasing the failure rate of the metal sheet stamping device. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a metal sheet stamping device, which is beneficial to reduce the failure rate of the metal sheet stamping device.

[0004] The metal sheet stamping device according to the embodiment of the present application comprises a rack, a stamping device, a conveying track, a feeding device and a waste collecting device. The stamping device is arranged on the rack and is used for stamping metal sheets. The conveying track is parallel to the front-rear direction, the front end of the conveying track is arranged in front of the stamping device, and the conveying track is used for moving multiple metal sheets in the front-rear direction. The feeding device is arranged on the rack and is used for accommodating multiple metal sheets and feeding the multiple metal sheets into the conveying track one by one. The interval conveying device is arranged on the rack and is used for keeping the multiple metal sheets on the conveying track at intervals and pushing the multiple metal sheets to move to the stamping device one by one from back to front, so that the stamping device can stamp the metal sheets. The interval conveying device can push the edge and corner scraps formed at the stamping device forward, so that the edge and corner scraps can fall from the front end of the conveying track. The waste collecting device is arranged on the rack and is used for collecting the edge and corner scraps falling from the front end of the conveying track.

[0005] At least has the following beneficial effects:

[0006] The feeding device can accommodate multiple metal pieces, and the feeding device can also send the multiple metal pieces into the conveying track in sequence. The conveying track plays a guiding role on the multiple metal pieces, so that the multiple metal pieces can move in the front-back direction. After the feeding device sends the multiple metal pieces into the conveying track, the interval conveying device not only can keep the multiple metal pieces on the conveying track at intervals, but also can push the multiple metal pieces on the conveying track to move from back to front, so that the multiple metal pieces on the conveying track can move to the stamping device in sequence. After the metal pieces move to the stamping device, the stamping device stamps the metal pieces to process workpieces of a specified shape, and at the same time, there are leftover materials on the stamping device. In the process of pushing the multiple metal pieces to move forward by the interval conveying device, the interval conveying device can also push the leftover materials at the stamping device to move forward, so that the leftover materials can be pushed and fall from the front end of the conveying track, and then the waste collecting device can collect the leftover materials formed at the stamping device. On the one hand, the interval conveying device in the metal piece stamping equipment can keep the multiple metal pieces on the conveying track at intervals, avoiding the accumulation of the multiple metal pieces due to being close to each other, and reducing the possibility of accumulation of the multiple metal pieces. On the other hand, the interval conveying device can push the leftover materials at the stamping device after stamping is completed, so that the leftover materials stuck on the stamping device can be pushed to fall into the waste collecting device, avoiding the accumulation of the multiple metal pieces due to the stuck leftover materials, further reducing the possibility of accumulation of the multiple metal pieces, enabling the metal piece stamping equipment to operate normally for a long time, and thus being beneficial to reduce the failure rate of the metal piece stamping equipment.

[0007] The metal piece stamping equipment according to the embodiment of the present application further comprises a finished product collecting device, the stamping device comprises a lifting driving mechanism, a lower die and an upper die, the lifting driving mechanism is arranged on the frame, the upper die is connected with the output end of the lifting driving mechanism, the lower die is arranged on the frame, the upper surface of the lower die is used for supporting the metal piece, the upper die is provided with a forming block, the lower die is provided with a forming hole matched with the forming block, the metal piece can move above the forming hole, the finished product collecting device is arranged on the frame and below the forming hole, and the lifting driving mechanism can drive the upper die to descend and combine with the lower die, so as to stamp the workpiece on the metal piece by the forming block, and make the workpiece pass through the forming hole and fall on the finished product collecting device.

[0008] According to the metal sheet stamping device, the finished product collecting device comprises a first conveying belt and a finished product box, the first conveying belt is parallel to the front-rear direction, the first conveying belt is arranged on the frame, the first conveying belt is used for conveying the workpieces from back to front, the rear end of the first conveying belt is arranged below the forming hole, so that the workpieces falling from the forming hole can fall on the first conveying belt, and the finished product box is arranged below the front end of the first conveying belt, so that the workpieces falling from the front end of the first conveying belt can fall into the finished product box.

[0009] According to the metal sheet stamping device, the conveying track comprises a support plate and two limiting plates, the support plate is arranged on the frame, the support plate is arranged behind the lower die, the upper surface of the support plate is flush with the upper surface of the lower die, the two limiting plates are parallel to the front-rear direction, the two limiting plates are connected to the upper surfaces of the support plate and the lower die, the front ends of the two limiting plates are arranged in front of the lower die, the forming hole is arranged between the two limiting plates, the area between the two limiting plates is used for moving the plurality of metal sheets from back to front, and the interval conveying device can drive the plurality of metal sheets between the two limiting plates to move from back to front, so that the plurality of metal sheets on the support plate can be moved to the upper side of the forming hole in sequence, and the feeding device is arranged behind the two limiting plates, so that the feeding device can sequentially feed the plurality of metal sheets into the area between the two limiting plates.

[0010] According to the metal sheet stamping device, the feeding device comprises a linear cylinder, a push plate and two enclosing plates, the two enclosing plates are parallel to the up-down direction, the two enclosing plates are connected to the frame, the two enclosing plates are arranged behind the two limiting plates, the two enclosing plates are arranged to form an accommodating cavity, the accommodating cavity is used for stacking the plurality of metal sheets, the cylinder body of the linear cylinder is connected to the frame and arranged behind the two enclosing plates, the piston rod of the linear cylinder is connected to the push plate, the piston rod of the linear cylinder can be extended and drive the push plate to insert into the lower end of the accommodating cavity, so that the push plate pushes the lowest metal sheet in the accommodating cavity into the area between the two limiting plates, and the piston rod of the linear cylinder can be retracted and drive the push plate to be extracted from the accommodating cavity.

[0011] The metal sheet stamping device according to the embodiment of the present application further comprises a transmission device, the interval conveying device comprises a first transmission shaft, a second transmission shaft, two first chain wheels, two second chain wheels, two chains and a plurality of push rods, the two first chain wheels are rotatably connected to the frame, and the two first chain wheels are respectively arranged on the left and right sides of the rear ends of the two limiting plates; the two first chain wheels are connected through the first transmission shaft; the two second chain wheels are rotatably connected to the frame, and the two second chain wheels are respectively arranged on the left and right sides of the front ends of the two limiting plates; the two second chain wheels are connected through the second transmission shaft; one of the chains is wound around the left first chain wheel and the left second chain wheel, and the other chain is wound around the right first chain wheel and the right second chain wheel; the upper portions of the two chains are parallel to the front-back direction and are arranged above the two limiting plates; the plurality of push rods are parallel to the left-right direction; the left and right ends of the plurality of push rods are respectively connected to the two chains; the plurality of push rods above the chains are arranged above the two limiting plates; the area between any two adjacent push rods above the chains is used for accommodating the metal sheets; and the piston rod of the linear cylinder can only drive one of the first chain wheels to rotate through the transmission device when the linear cylinder is extended, so that the push plate pushes the metal sheets into the two push rods at the rear ends of the two limiting plates, and the plurality of push rods above the chains respectively push the edge scraps and the plurality of metal sheets between the two limiting plates forward.

[0012] The metal sheet stamping device according to the embodiment of the present application, the transmission device comprises a linkage mechanism, a transmission wheel and a one-way clutch, the transmission wheel is connected to one of the first chain wheels through the one-way clutch, the piston rod of the linear cylinder is connected to the transmission wheel through the linkage mechanism, so that the piston rod of the linear cylinder can drive the transmission wheel to rotate, and the transmission wheel drives the one of the first chain wheels to rotate, and the one-way clutch is used to enable the transmission wheel to drive only one of the first chain wheels to rotate in one direction.

[0013] The metal sheet stamping device according to the embodiment of the present application, the left and right ends of the plurality of push rods are respectively detachably connected to the two chains, the two first chain wheels are configured to be adjustable in the front-back direction, and the linear cylinder is configured to be adjustable in the front-back direction.

[0014] According to the metal sheet stamping device, the two barriers each include a baffle, a first barrier strip and a second barrier strip, the two baffles are connected to the frame, the two first barrier strips are respectively arranged on opposite sides of the two baffles, the two second barrier strips are respectively arranged on front sides of the two baffles, the two baffles, the two first barrier strips and the two second barrier strips form the accommodating cavity, a gap between the two second barrier strips and the support plate is used for the front end of the push plate and the single metal sheet to pass through, the two first barrier strips are configured to be adjustable in the front-rear direction, so as to adjust the length of the accommodating cavity in the front-rear direction, and the two second barrier strips are configured to be adjustable in the up-down direction, so as to adjust the gap height between the two second barrier strips and the support plate.

[0015] According to the metal sheet stamping device, the waste collecting device includes a second conveying belt and a waste box, the second conveying belt is parallel to the front-rear direction, the second conveying belt is rotatably connected to the frame, the second conveying belt is used for conveying the offcut from back to front, the rear end of the second conveying belt is arranged below the front end of the conveying track, so that the offcut falling from the front end of the conveying track can fall on the second conveying belt, and the waste box is arranged below the front end of the second conveying belt, so that the offcut falling from the front end of the second conveying belt can fall into the waste box.

[0016] Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following and / or can be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above and / or additional aspects and advantages of the application will become apparent and be readily understood by considering the following detailed description, including the accompanying drawings, in which:

[0018] Figure 1 is a structural schematic view of the metal sheet stamping device of the embodiment of the application;

[0019] Figure 2 is Figure 1 is a partial enlarged view of A in FIG. 1;

[0020] Figure 3 is Figure 1 is a partial enlarged view of B in FIG. 1;

[0021] Figure 4 is a partial structural schematic view of the metal sheet stamping device of the embodiment of the application;

[0022] Figure 5 is Figure 4 is a partial enlarged view of C in FIG. 1;

[0023] Figure 6 For Figure 4 A local enlarged view at D in the middle;

[0024] Figure 7 For the structure diagram of the conveying track and the lower die in the metal piece stamping equipment of the embodiment of the application;

[0025] Figure 8 For the side view schematic diagram of the chain, push rod and push plate in the metal piece stamping equipment of the embodiment of the application;

[0026] Figure 9 For the structure schematic diagram of the linear air cylinder, first sprocket and transmission device in the metal piece stamping equipment of the embodiment of the application;

[0027] Figure 10 For the structure schematic diagram of the linear air cylinder, first sprocket and transmission device in the metal piece stamping equipment of the embodiment of the application from another perspective;

[0028] Reference signs:

[0029] Frame 100; conveying track 110; support plate 111; limiting plate 112;

[0030] Stamping device 200; upper die 210; avoiding groove 211; lower die 220; forming hole 221; lifting driving mechanism 230;

[0031] Finished product collecting device 300; first conveying belt 310; finished product box 320;

[0032] Waste collecting device 400; second conveying belt 410; waste product box 420;

[0033] Feeding device 500; linear air cylinder 510; push plate 520; fence 530; baffle 531; first stop 532; second stop 533;

[0034] Interval conveying device 600; first sprocket 610; second sprocket 620; chain 630; push rod 640;

[0035] Transmission device 700; connecting rod mechanism 710; transmission wheel 720; one-way clutch 730. DETAILED DESCRIPTION

[0036] The embodiments of the application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary, only for explaining the application, and cannot be understood as a limitation of the application.

[0037] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right and the like, is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0038] In the description of the present application, one or more is understood as one or more, more than two is understood as more than two, greater than, less than, more than and the like are understood as not including the number, above, below, within and the like are understood as including the number. If the first, second is described, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the sequence of technical features indicated.

[0039] In the description of the present application, unless otherwise explicitly limited, the words such as setting, mounting, connecting and the like should be broadly understood, and those skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0040] With reference to Figure 1 , Figure 2 and Figure 4 , the metal sheet stamping equipment of the embodiment of the present application comprises a rack 100, a stamping device 200, a conveying track 110, a feeding device 500, a spacing conveying device 600 and a waste collecting device 400.

[0041] The stamping device 200 is used for stamping metal sheets, the conveying track 110 is parallel to the front-back direction, the front end of the conveying track 110 is arranged in front of the stamping device 200, and the conveying track 110 is used for moving a plurality of metal sheets in the front-back direction. The feeding device 500 is arranged on the rack 100, and the feeding device 500 is used for accommodating a plurality of metal sheets and sequentially feeding the plurality of metal sheets into the conveying track 110.

[0042] The spacing conveying device 600 is arranged on the rack 100, and the spacing conveying device 600 is used for keeping a plurality of metal sheets on the conveying track 110 at intervals, and sequentially moving the plurality of metal sheets from back to front to the stamping device 200, so that the stamping device 200 can stamp the metal sheets. The spacing conveying device 600 can push the edge scraps formed at the stamping device 200 forward, so that the edge scraps can fall from the front end of the conveying track 110. The waste collecting device 400 is arranged on the rack 100, and the waste collecting device 400 is used for collecting the edge scraps falling from the front end of the conveying track 110.

[0043] The punching device 200 is arranged on the frame 100, and the punching device 200 can punch the metal sheets moving to the punching device 200 to punch the metal sheets to form the workpieces with the edge and corner scraps. The punching device 200 is a common punching die, which includes an upper die 210 and a lower die 220. The lower die 220 can support the metal sheets, and the upper die 210 can be combined with the lower die 220 so that the upper die 210 and the lower die 220 can punch the metal sheets to form the workpieces with the edge and corner scraps.

[0044] The conveying track 110 is arranged on the frame 100, and the front end of the conveying track 110 is arranged in front of the punching device 200, i.e. in front of the lower die 220. On the one hand, the conveying track 110 can guide the metal sheets, so that the metal sheets on the conveying track 110 can be distributed in the front-rear direction, and the metal sheets can move on the conveying track 110 in the front-rear direction. On the other hand, the front end of the conveying track 110 is arranged in front of the punching device 200, so that the conveying track 110 can also guide the edge and corner scraps formed by punching, so that the edge and corner scraps can move in the front-rear direction under the action of the conveying track 110 and can fall from the front end of the conveying track 110. The waste collecting device 400 is arranged on the frame 100, and the waste collecting device 400 can collect the edge and corner scraps falling from the front end of the conveying track 110, so as to avoid the interference of the falling edge and corner scraps with the normal operation of the metal sheet punching device, and also to ensure the cleanliness of the processing environment.

[0045] The feeding device 500 is arranged on the frame 100, and the feeding device 500 can accommodate and feed the metal sheets. The feeding device 500 can include a circular vibration feeder and a straight vibration feeder, and the output end of the circular vibration feeder is communicated with the input end of the straight vibration feeder. The circular vibration feeder can accommodate the metal sheets and drive the metal sheets to move to the straight vibration feeder. The straight vibration feeder can drive the metal sheets to move from back to front, so that the metal sheets in the straight vibration feeder can move to the conveying track 110 in sequence. The circular vibration feeder and the straight vibration feeder are common feeders, which will not be described further here.

[0046] The spacing conveying device 600 is arranged on the frame 100. The spacing conveying device 600 can not only keep the plurality of metal blanks on the conveying track 110 spaced apart from each other, but also push the plurality of metal blanks on the conveying track 110 to move from back to front, so that the plurality of metal blanks can move to the punching device 200 in sequence, and then the punching device 200 can punch the metal blanks. On the other hand, the spacing conveying device 600 can also push the corner scraps formed at the punching device 200 to move forward, so that the corner scraps can fall from the front end of the conveying track 110 into the waste collecting device 400. The spacing conveying device 600 can include a first air cylinder, a second air cylinder, a third air cylinder and a conveying belt. The first air cylinder, the second air cylinder and the third air cylinder are arranged in sequence from back to front on the frame 100, and the first air cylinder and the second air cylinder are arranged at the rear end of the conveying track 110, and the third air cylinder is arranged at the punching device 200. The conveying belt is rotatably connected to the conveying track 110.

[0047] Under the action of the feeding device 500, the plurality of metal blanks move to the rear end of the conveying belt in sequence, and the conveying belt can rotate and drive the plurality of metal blanks to move from back to front. The second air cylinder piston rod extends above the conveying belt and abuts against the first metal blank in front of the plurality of metal blanks. At this time, the piston rod of the second air cylinder hinders the plurality of metal blanks from continuing to move forward. Then the piston rod of the first air cylinder extends above the conveying belt, and the piston rod of the first air cylinder is inserted between the first metal blank and the second metal blank, so that the first metal blank is between the piston rod of the first air cylinder and the piston rod of the second air cylinder. Then the piston rod of the second air cylinder leaves above the conveying belt, and the piston rod of the second air cylinder no longer blocks the first metal blank, and the first metal blank starts to continue to move towards the punching device 200 under the action of the conveying belt.

[0048] After the first metal piece continues to move forward by a certain distance, the piston rod of the second cylinder again extends above the conveying belt, and then the piston rod of the first cylinder is away from above the conveying belt, the second metal piece and other metal pieces continue to move forward, the second metal piece abuts against the piston rod of the second cylinder, the piston rod of the second cylinder hinders the remaining metal pieces to move forward, the piston rod of the first cylinder again extends above the conveying belt and is inserted between the second metal piece and the third metal piece, so that the second metal piece is between the piston rod of the first cylinder and the piston rod of the second cylinder, then the piston rod of the second cylinder is away from above the conveying belt, the second metal piece starts to move towards the stamping device 200 under the action of the conveying belt, and so on, so that the plurality of metal pieces on the conveying belt can be spaced apart from each other, and the plurality of metal pieces on the conveying belt can be moved to the stamping device 200 in turn. In the embodiment of the present application, the plurality of metal pieces keep spacing from each other means that there is a gap between any two adjacent metal pieces, that is, any two adjacent metal pieces do not abut against each other.

[0049] After the metal piece moves to the stamping device 200, the stamping device 200 stamps the metal piece to process a workpiece and form a scrap. After the stamping device 200 finishes stamping, the piston rod of the third cylinder extends and pushes the scrap formed at the stamping device 200, so that the scrap falls from the front end of the conveying track 110 and falls into the waste collecting device 400.

[0050] It can be understood that the feeding device 500 can accommodate multiple metal blanks, and the feeding device 500 can also sequentially feed the multiple metal blanks into the conveying track 110. The conveying track 110 plays a guiding role on the multiple metal blanks, so that the multiple metal blanks can move in the front-rear direction. After the feeding device 500 feeds the multiple metal blanks into the conveying track 110, the interval conveying device 600 not only can keep the multiple metal blanks on the conveying track 110 at intervals, but also can push the multiple metal blanks on the conveying track 110 to move from back to front, so that the multiple metal blanks on the conveying track 110 can sequentially move to the stamping device 200. After the metal blanks move to the stamping device 200, the stamping device 200 stamps the metal blanks to process workpieces of a specified shape, and at the same time, there are leftover materials on the stamping device 200. In the process of pushing the multiple metal blanks to move forward by the interval conveying device 600, the interval conveying device 600 can also push the leftover materials at the stamping device 200 to move forward, so that the leftover materials can be pushed and fall from the front end of the conveying track 110, thereby enabling the waste collecting device 400 to collect the leftover materials formed at the stamping device 200. On the one hand, the interval conveying device 600 in the metal blank stamping equipment can keep the multiple metal blanks on the conveying track 110 at intervals, avoiding the accumulation of the multiple metal blanks due to being in close contact with each other, and reducing the possibility of the accumulation of the multiple metal blanks. On the other hand, the interval conveying device 600 can push the leftover materials at the stamping device 200 after stamping is completed, so that the leftover materials stuck on the stamping device 200 can be pushed to fall into the waste collecting device 400, avoiding the accumulation of the multiple metal blanks due to the stuck leftover materials, further reducing the possibility of the accumulation of the multiple metal blanks, enabling the metal blank stamping equipment to operate normally for a long time, and thereby facilitating the reduction of the failure rate of the metal blank stamping equipment.

[0051] Reference Figure 1 and Figure 3 The metal blank stamping equipment further comprises a finished product collecting device 300, the stamping device 200 comprises a lifting driving mechanism 230, a lower die 220 and an upper die 210, the lifting driving mechanism 230 is arranged on the rack 100, the upper die 210 is connected with the output end of the lifting driving mechanism 230, the lower die 220 is arranged on the rack 100, the upper surface of the lower die 220 is used for supporting the metal blank, the upper die 210 is provided with a forming pressing block, the lower die 220 is provided with a forming hole 221 matched with the forming pressing block, the metal blank can move above the forming hole 221, the finished product collecting device 300 is arranged on the rack 100 and below the forming hole 221, and the lifting driving mechanism 230 can drive the upper die 210 to descend and close with the lower die 220, so as to stamp the workpiece on the metal blank by the forming pressing block, and make the workpiece pass through the forming hole 221 and fall into the finished product collecting device 300.

[0052] It can be understood that under the action of the interval conveying device 600, the plurality of metal pieces move from back to front on the conveying track 110, and the plurality of metal pieces can be sequentially moved to the upper surface of the lower die 220 and sequentially moved above the forming hole 221. Then the lifting driving mechanism 230 drives the upper die 210 to descend, so that the upper die 210 is combined with the lower die 220, and the forming punch on the upper die 210 starts to extrude the metal piece. After the upper die 210 descends to a certain extent, the forming punch is inserted into the forming hole 221, and the forming punch and the inner wall of the forming hole 221 play a shearing effect on the metal piece, so that the metal piece is punched into a workpiece, and the workpiece passes through the forming hole 221 and falls into the finished product collecting device 300. The formed scrap remains on the upper surface of the lower die 220, and the interval conveying device 600 can push the scrap on the upper surface of the lower die 220, so that the scrap is pushed into the waste collecting device 400. The forming punch and the forming hole 221 are common structures in the punching device 200, and the shape of the forming punch and the forming hole 221 is the same as that of the workpiece, which will not be described further. The lifting driving mechanism 230 is also a common mechanism that can provide power in the upward and downward directions, which will not be described further.

[0053] Reference Figure 3 The finished product collecting device 300 includes a first conveying belt 310 and a finished product box 320. The first conveying belt 310 is parallel to the front and back directions, and is rotatably connected to the rack 100. The first conveying belt 310 is used to convey the workpiece from back to front. The rear end of the first conveying belt 310 is located below the forming hole 221, so that the workpiece falling from the forming hole 221 can fall on the first conveying belt 310. The finished product box 320 is located below the front end of the first conveying belt 310, so that the workpiece falling from the front end of the first conveying belt 310 can fall into the finished product box 320. It can be understood that after the workpiece is punched out of the metal piece, the workpiece passes through the forming hole 221 and falls on the first conveying belt 310. The first conveying belt 310 can convey the workpiece from back to front. After the workpiece moves forward by a certain distance, the workpiece falls from the front end of the first conveying belt 310 into the finished product box 320, so as to achieve the purpose of collecting the workpiece. As an embodiment of the present application, the finished product box 320 is detachably connected to the rack 100, so that the operator can detach the finished product box 320 from the rack 100, so as to facilitate the operator to carry the finished product box 320 and the plurality of workpieces in the finished product box 320.

[0054] Reference Figure 2 , Figure 4 , Figure 6 and Figure 7The conveying track 110 comprises a support plate 111 and two limiting plates 112. The support plate 111 is arranged on the rack 100 and is arranged behind the lower mold 220. The upper surface of the support plate 111 is flush with the upper surface of the lower mold 220. The two limiting plates 112 are parallel to the front-rear direction. The two limiting plates 112 are connected to the upper surfaces of the support plate 111 and the lower mold 220. The front ends of the two limiting plates 112 are arranged in front of the lower mold 220. The forming holes 221 are arranged between the two limiting plates 112. The area between the two limiting plates 112 is used for the movement of the plurality of metal sheet pieces in the front-rear direction. The interval conveying device 600 can drive the plurality of metal sheet pieces between the two limiting plates 112 to move from back to front, so that the plurality of metal sheet pieces on the support plate 111 can be moved to the upper side of the forming holes 221 in sequence. The feeding device 500 is arranged behind the two limiting plates 112, so that the feeding device 500 can feed the plurality of metal sheet pieces into the area between the two limiting plates 112 in sequence.

[0055] It can be understood that the upper surfaces of the support plate 111 and the lower mold 220 can support the metal sheet pieces, that is, the metal sheet pieces can move on the upper surfaces of the support plate 111 and the lower mold 220. The upper surface of the support plate 111 is flush with the upper surface of the lower mold 220, that is, the metal sheet pieces on the support plate 111 can move to the upper surface of the lower mold 220. The two limiting plates 112 are parallel to the front-rear direction and are connected to the upper surfaces of the support plate 111 and the lower mold 220, so that the two limiting plates 112 can limit and guide the metal sheet pieces on the support plate 111 and the lower mold 220, thereby enabling the metal sheet pieces on the support plate 111 and the lower mold 220 to move only in the front-rear direction.

[0056] The feeding device 500 is arranged behind the two limiting plates 112. The feeding device 500 can sequentially send the plurality of metal pieces into the area between the two limiting plates 112, so that the plurality of metal pieces in the feeding device 500 can sequentially move to the upper surface of the supporting plate 111. During the process that the feeding device 500 drives the plurality of metal pieces to sequentially enter the area between the two limiting plates 112, the interval conveying device 600 drives the plurality of metal pieces between the two limiting plates 112 to move from back to front, so that the plurality of metal pieces on the supporting plate 111 can sequentially move forward to above the forming hole 221 on the lower mold 220. After the metal pieces move to above the forming hole 221, the lifting driving mechanism 230 drives the upper mold 210 to descend and close to the lower mold 220, so that the forming block punches out the workpiece on the metal piece, the workpiece passes through the forming hole 221 and falls on the finished product collecting device 300, and the leftover material is left on the area of the lower mold 220 corresponding to the forming hole 221, and the leftover material is arranged between the two limiting plates 112. After one of the workpieces is processed, the interval conveying device 600 continues to drive the plurality of metal pieces between the two limiting plates 112 to move from back to front. During the process that the interval conveying device 600 drives the plurality of metal pieces between the two limiting plates 112 to move forward, the interval conveying device 600 also drives the leftover material between the two limiting plates 112 to move forward, so that the leftover material can fall from the front end of the two limiting plates 112 and fall on the waste collecting device 400.

[0057] Reference Figure 1 and Figure 3 The waste collecting device 400 includes a second conveying belt 410 and a waste box 420. The second conveying belt 410 is parallel to the front-back direction, and the second conveying belt 410 is rotatably connected to the rack 100. The second conveying belt 410 is used to convey the leftover material from back to front. The rear end of the second conveying belt 410 is arranged below the front end of the conveying track 110, so that the leftover material falling from the front end of the conveying track 110 can fall on the second conveying belt 410. The waste box 420 is arranged below the front end of the second conveying belt 410, so that the leftover material falling from the front end of the second conveying belt 410 can fall into the waste box 420. The rear end of the second conveying belt 410 is arranged below the front end of the conveying track 110, i.e., the rear end of the second conveying belt 410 is arranged below the front end of the two limiting plates 112, so that the leftover material falling from the front end of the two limiting plates 112 can fall on the rear end of the second conveying belt 410. The waste collecting device 400 is similar to the finished product collecting device 300, and will not be described further here.

[0058] Reference Figures 4 to 6The feeding device 500 comprises a linear cylinder 510, a push plate 520, and two enclosing fences 530. The two enclosing fences 530 are parallel to the up-down direction, are connected to the rack 100, are arranged behind the two limiting plates 112, and enclose a containing cavity for stacking a plurality of metal pieces. The cylinder body of the linear cylinder 510 is connected to the rack 100 and arranged behind the two enclosing fences 530. The piston rod of the linear cylinder 510 is connected to the push plate 520. The piston rod of the linear cylinder 510 can extend and drive the push plate 520 to insert into the lower end of the containing cavity, so that the push plate 520 pushes the lowest metal piece in the containing cavity into the area between the two limiting plates 112. The piston rod of the linear cylinder 510 can retract and drive the push plate 520 to withdraw from the containing cavity.

[0059] It can be understood that the two enclosing fences 530 enclose a containing cavity in which a plurality of metal pieces are stacked. When feeding is needed, the piston rod of the linear cylinder 510 extends and drives the push plate 520 to move forward. During the forward movement of the push plate 520, the front end of the push plate 520 passes through the gap between the two enclosing fences 530 and inserts into the lower end of the containing cavity, so that the push plate 520 can push the lowest metal piece in the containing cavity forward and push it into the area between the two limiting plates 112. After the push plate 520 pushes one of the metal pieces into the area between the two limiting plates 112, the piston rod of the linear cylinder 510 retracts and drives the push plate 520 to move backward, so that the push plate 520 can be withdrawn from the containing cavity. After the push plate 520 is withdrawn from the containing cavity, the plurality of metal pieces stacked in the containing cavity will move downward under their own gravity and rest on the support plate 111 again, so that the push plate 520 can push the next metal piece. By repeating the above process and repeatedly extending and retracting the piston rod of the linear cylinder 510, the push plate 520 can sequentially push the plurality of metal pieces in the containing cavity into the area between the two guide plates.

[0060] Reference Figure 5 and Figure 6 The two enclosing fences 530 each comprise a fence plate 531, a first fence strip 532, and a second fence strip 533. The two fence plates 531 are connected to the rack 100. The two first fence strips 532 are respectively arranged on the opposite sides of the two fence plates 531. The two second fence strips 533 are respectively arranged on the front sides of the two fence plates 531. The two fence plates 531, the two first fence strips 532, and the two second fence strips 533 enclose the containing cavity. The gap between the two second fence strips 533 and the support plate 111 is used for the front end of the push plate 520 and the single metal piece to pass through. The two first fence strips 532 are configured to be adjustable in the front-back direction to adjust the length of the containing cavity in the front-back direction. The two second fence strips 533 are configured to be adjustable in the up-down direction to adjust the gap height between the two second fence strips 533 and the support plate 111.

[0061] It is understood that metal sheets of different specifications have different widths and heights. In this embodiment of the invention, the two first baffles 532 are both configured to be adjustable in the front-back direction of the baffles 531. By adjusting the position of the two first baffles 532 in the front-back direction of the two baffles 531, the length of the receiving cavity in the front-back direction can be changed so that the receiving cavity can accommodate metal sheets of different widths. In this embodiment of the invention, the gap height between the two second baffles 533 and the support plate 111 is between one and two times the thickness of the metal sheet, so that the pusher 520 can only push out the lowermost metal sheet in the receiving cavity at a time. The two second baffles 533 are both configured to be adjustable in the vertical direction of the baffles 531. By adjusting the position of the two second baffles 533 in the vertical direction of the two baffles 531, the gap height between the two second baffles 533 and the support plate 111 can be adjusted to accommodate metal sheets of different thicknesses. In this embodiment of the invention, the first stop bar 532 and the second stop bar 533 are both adjustable in position through the structure of the waist-shaped hole and the bolt, which will not be described in detail here.

[0062] refer to Figure 4 and Figures 6 to 10The metal sheet stamping device further comprises a transmission device 700, the interval conveying device 600 comprises a first transmission shaft, a second transmission shaft, two first chain wheels 610, two second chain wheels 620, two chains 630 and a plurality of push rods 640, the two first chain wheels 610 are rotatably connected to the rack 100, and the two first chain wheels 610 are arranged on the left and right sides of the rear ends of the two limiting plates 112 respectively, the two first chain wheels 610 are connected through the first transmission shaft, the two second chain wheels 620 are rotatably connected to the rack 100, and the two second chain wheels 620 are arranged on the left and right sides of the front ends of the two limiting plates 112 respectively, the two second chain wheels 620 are connected through the second transmission shaft, one of the two chains 630 is wound around the left first chain wheel 610 and the second chain wheel 620, and the other chain 630 is wound around the right first chain wheel 610 and the second chain wheel 620, the upper portions of the two chains 630 are parallel to the front and back directions and are arranged above the two limiting plates 112, the plurality of push rods 640 are parallel to the left and right directions, the left and right ends of the plurality of push rods 640 are connected to the two chains 630 respectively, the plurality of push rods 630 arranged above the two limiting plates 112 are arranged above the two limiting plates 112, and the regions between any two adjacent push rods 640 arranged above the chain 630 are used for accommodating the metal sheets, the piston rod of the linear cylinder 510 can only drive one of the first chain wheels 610 to rotate through the transmission device 700 when the piston rod is extended, so that the push plate 520 pushes the metal sheets into the two push rods 640 at the rear ends of the two limiting plates 112, and the plurality of push rods 640 arranged above the chain 630 respectively push the corner scraps and the plurality of metal sheets between the two limiting plates 112 forward.

[0063] In the embodiment of the present application, referring to Figure 2 and Figure 6 The thicknesses of the two limiting plates 112 are less than the thickness of the metal sheets, so that the upper portions of the metal sheets can extend out of the two limiting plates 112 and abut against the push rods 640. Referring to Figure 8The shaded part of the chain 630 in the figure is the upper part of the chain 630. The two shaded push rods 640 in the figure are the two push rods 640 at the rear end of the two limiting plates 112. In the embodiment of the present application, a plurality of push rods 640 are evenly distributed on the two chains 630, and the distance between any two adjacent push rods 640 on the upper part of the chain 630 is greater than the width of the metal sheet. It can be understood that the two first sprockets 610 are rotatably connected to the rack 100, and the two first sprockets 610 are connected by a first transmission shaft, so that when one of the first sprockets 610 rotates, the other first sprocket 610 will rotate synchronously. The two second sprockets 620 are rotatably connected to the rack 100, and the two second sprockets 620 are connected by a second transmission shaft. Since one of the chains 630 is wound around the left first sprocket 610 and the second sprocket 620, and the other chain 630 is wound around the right first sprocket 610 and the second sprocket 620, when one of the first sprockets 610 rotates, the other first sprocket 610 and the two second sprockets 620 can rotate synchronously. For the convenience of description, it is defined that when the two first sprockets 610 and the two second sprockets 620 rotate synchronously in the forward direction, the upper part of the chain 630 moves from back to front, that is, the plurality of push rods 640 on the upper part of the chain 630 move from back to front. The area between any two adjacent push rods 640 on the upper part of the chain 630 can accommodate a metal sheet, and during the forward movement of the plurality of push rods 640 on the upper part of the chain 630, the push rod 640 can abut against the metal sheet in front of it, so that the push rod 640 can push the metal sheet between the two limiting plates 112 forward. Similarly, after the stamping device 200 stamps out the workpiece, the corner scraps will be left on the lower die 220, and the corner scraps will be located between the two limiting plates 112, so that the push rod 640 on the lower die 220 moving forward can also push the corner scraps forward.

[0064] When feeding is needed, the piston rod of the linear cylinder 510 will extend, and the extended piston rod will drive the push plate 520 to move forward, at the same time, the extended piston rod drives one of the first sprockets 610 to rotate in the forward direction through the transmission device 700. During the forward movement of the push plate 520, the metal sheet at the lowermost position in the push plate 520 accommodating cavity of the front end of the push plate 520 moves forward, so that the metal sheet approaches the two limiting plates 112. At the same time, the two first sprockets 610 and the two second sprockets 620 rotate synchronously in the forward direction, and the plurality of push rods 640 on the upper part of the chain 630 begin to move forward, so that the plurality of push rods 640 on the upper part of the chain 630 begin to push the corner scraps and the plurality of metal sheets between the two limiting plates 112 forward.

[0065] The piston rod of the linear cylinder 510 continues to extend, and the push plate 520 starts to push the metal sheet into the two limiting plates 112. With the rotation of the chain 630, the metal sheet pushed by the push plate 520 gradually enters between the two push rods 640 at the rear end of the two limiting plates 112. At the same time, the multiple push rods 640 at the upper part of the chain 630 continue to push the scrap and multiple metal sheets between the two limiting plates 112 forward, so that the scrap between the two limiting plates 112 continues to move forward to the front end of the two limiting plates 112, and the multiple metal sheets between the two limiting plates 112 continue to move forward to the forming hole 221 on the lower die 220.

[0066] When the piston rod of the linear cylinder 510 extends to the limit position, the metal sheet pushed by the push plate 520 is completely pushed into between the two push rods 640 at the rear end of the two limiting plates 112, at the same time, the next metal sheet is pushed by the push rod 640 to above the forming hole 221, and the residual scrap on the lower die 220 is pushed by the push rod 640 to fall into the waste collecting device 400. Then the piston rod of the linear cylinder 510 starts to retract, so that the push plate 520 is extracted from the containing cavity, in order to push the next time. Since the transmission device 700 can only drive one of the first sprockets 610 to rotate forward when the piston rod of the linear cylinder 510 extends, during the retraction of the piston rod of the linear cylinder 510, the two first sprockets 610 and the two second sprockets 620 remain different, so that the multiple metal sheets between the two limiting plates 112 remain stationary, to ensure that the forming block can smoothly stamp the metal sheet above the forming hole 221. Repeat the above process, that is, the feeding of the metal sheet, the stamping of the metal sheet and the removal of the scrap. It can be seen that, on the one hand, the extension and retraction of the piston rod of the linear cylinder 510 can realize the feeding of the metal sheet, so that the multiple metal sheets in the containing cavity can be pushed into between the two limiting plates 112 in turn. On the other hand, under the action of the transmission device 700, the linear cylinder 510 realizes the intermittent one-way transmission of one of the first sprockets 610, so that the multiple first sprockets 610 and the multiple second sprockets 620 can rotate forward intermittently, and then the multiple push rods 640 at the upper part of the chain 630 can push the multiple metal sheets between the two limiting plates 112 to above the forming hole 221 in turn, and the scrap between the two limiting plates 112 on the lower die 220 can also be pushed into the waste collecting device 400.

[0067] In the embodiment of the present application, the stamping device 200 further comprises a compression spring, a cooperation hole is formed on the upper die 210, the forming block is arranged in the cooperation hole, and the upper die 210 is connected with the output end of the lifting driving mechanism 230 through the compression spring. During the stamping process, the lifting driving mechanism 230 drives the upper die 210 and the forming block to descend at the same time, the upper die 210 first closes the lower die 220, the compression spring starts to compress, and the upper die 210 and the lower die 220 clamp the metal sheet. Then the forming block continues to descend, so that the forming block can stamp the metal sheet. The moving distance of each time of the plurality of push rods 640 on the upper part of the chain 630 is the same, that is, the relative position between the upper die 210 and the lower push rod 640 is the same during the closing process of the upper die 210. The upper die 210 is provided with an avoiding groove 211 for the push rod 640 to extend into, so that the push rod 640 can enter the avoiding groove 211 after the upper die 210 and the lower die 220 are closed, thereby avoiding the push rod 640 from hindering the upper die 210 from closing the lower die 220.

[0068] With reference to Figure 9 and Figure 10 The transmission device 700 comprises a connecting rod mechanism 710, a transmission wheel 720 and a one-way clutch 730, the transmission wheel 720 is connected with one of the first chain wheels 610 through the one-way clutch 730, and the piston rod of the linear cylinder 510 is connected with the transmission wheel 720 through the connecting rod mechanism 710, so that the piston rod of the linear cylinder 510 can drive the transmission wheel 720 to rotate, and the transmission wheel 720 drives one of the first chain wheels 610 to rotate, and the one-way clutch 730 is used for enabling the transmission wheel 720 to drive one of the first chain wheels 610 to rotate in one direction only. In the embodiment of the present application, the piston rod of the linear cylinder 510 is drivingly connected with the transmission wheel 720 through the connecting rod mechanism 710, and under the action of the connecting rod mechanism 710, the linear motion of the piston rod of the linear cylinder 510 can be converted into the rotation of the transmission wheel 720.

[0069] With reference to Figure 9 and Figure 10The connecting rod mechanism 710 comprises a first connecting rod, one end of which is hingedly connected to the piston rod of the linear cylinder 510, and the other end of which is eccentrically hingedly connected to the transmission wheel 720. The hingedly connected position of the first connecting rod and the transmission wheel 720 is located at the upper part of the transmission wheel 720 and does not coincide with the axis of the transmission wheel 720, i.e. the eccentric connection. The connecting rod mechanism 710 is a common crank connecting rod mechanism 710 for changing linear motion into rotary motion, which will not be further described herein. The transmission wheel 720 is connected with the input end of the one-way clutch 730, and one of the first sprockets 610 is connected with the output end of the one-way clutch 730. The one-way clutch 730 is a common clutch that only allows one-way rotation to transmit kinetic energy, and its specific structure will not be further described herein. In the embodiment of the application, the one-way clutch 730 only allows the positively rotating transmission wheel 720 to transmit power to one of the first sprockets 610, i.e. the one-way clutch 730 only allows the positively rotating transmission wheel 720 to drive one of the first sprockets 610 to rotate positively.

[0070] It can be understood that when the piston rod of the linear cylinder 510 extends, the transmission wheel 720 starts to rotate positively under the power transmission of the connecting rod mechanism 710. At this time, the transmission wheel 720 drives one of the first sprockets 610 to rotate positively through the one-way clutch 730, thereby synchronously rotating the two first sprockets 610 and the two second sprockets 620. When the piston rod of the linear cylinder 510 retracts, the transmission wheel 720 starts to rotate reversely under the power transmission of the connecting rod mechanism 710. At this time, the one-way clutch 730 cuts off the power transmission between the transmission wheel 720 and the first sprocket 610, so that the two first sprockets 610 and the two second sprockets 620 remain stationary during the retraction of the piston rod of the linear cylinder 510.

[0071] Reference Figure 4The left and right ends of the plurality of push rods 640 are respectively detachably connected to the two chains 630, the two first sprockets 610 are configured to be adjustable in the front-back direction, and the linear cylinder 510 is configured to be adjustable in the front-back direction. When different specifications of metal pieces need to be punched, the operator can first detach the plurality of push rods 640 from the two chains 630, and then detach the two chains 630 from the two first sprockets 610 and the two second sprockets 620. After the two chains 630 are detached, the operator can adjust the positions of the two first sprockets 610 in the front-back direction of the rack 100. After the positions of the two first sprockets 610 are adjusted, the operator re-winds the two chains 630 of the corresponding length on the two first sprockets 610 and the two second sprockets 620. After the two chains 630 are installed, the operator can re-install the plurality of push rods 640 on the two chains 630 and adjust the gap distance between any two adjacent push rods 640 accordingly, so that the gap distance between the two push rods 640 can accommodate metal pieces of the corresponding specification. After the plurality of push rods 640 are installed, the operator adjusts the position of the linear cylinder 510 in the front-back direction of the support plate 111, so that the push plate 520 can smoothly push the metal pieces into the two push rods 640.

[0072] It can be understood that the left and right ends of the plurality of push rods 640 are respectively detachably connected to the two chains 630, so that the distance between the two push rods 640 is adjustable to accommodate metal pieces of different specifications. The positions of the two first sprockets 610 in the front-back direction of the rack 100 are adjustable, and the position of the linear cylinder 510 in the front-back direction of the rack 100 is adjustable, so that after replacing metal pieces of different specifications, the push plate 520 can still push the plurality of metal pieces in the accommodation cavity into the two limiting plates 112 in turn, and the plurality of push rods 640 can still push the plurality of metal pieces to the upper side of the forming hole 221 in turn, improving the use flexibility of the metal piece punching equipment. In the embodiment of the application, the positions of the two limiting plates 112 in the left-right direction of the support plate 111 are adjustable to adjust the distance between the two limiting plates 112. As an embodiment of the application, the linear cylinder 510, the two first sprockets 610 and the two limiting plates 112 are all adjustable in position through the structure of the waist-shaped hole and the bolt, which will not be described further.

[0073] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, but as long as the combinations of the technical features do not contradict, they should be considered within the scope of the present disclosure.

[0074] Of course, the present application is not limited to the above-described embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present application, and these equivalent modifications or substitutions are included in the scope defined by the claims of the present application.

Claims

1. A metal sheet stamping apparatus characterized by comprising: The utility model relates to a metal material piece punching device, including: A rack; Finished product collecting device is located on the rack; Punching device, including lifting drive mechanism, lower mould and upper die, the lifting drive mechanism is located on the rack, the upper die is connected with the output end of lifting drive mechanism, the lower mould is located on the rack, the upper surface of lower mould is used for supporting the metal material piece, the upper die is equipped with the forming briquetting, the lower mould is equipped with the forming hole with the forming briquetting cooperation, the metal material piece can move to the upper of forming hole, the finished product collecting device is located below the forming hole, the lifting drive mechanism can drive the upper die to drop and with the lower mould and die, so that the forming briquetting punches out the work piece on the metal material piece, and make the work piece pass the forming hole and fall on the finished product collecting device; Conveying rail, including support plate and two limit plates, the support plate is located on the rack, the support plate is located behind the lower mould, the upper surface of support plate is flush with the upper surface of lower mould, two limit plates are parallel to the front and back direction, two limit plates are connected on the upper surface of support plate and lower mould, the front end of two limit plates is located in front of the lower mould, the forming hole is located between two limit plates, the area between two limit plates is used for moving multiple metal material pieces from back to front; Feeding device, including linear cylinder, push plate and two enclosures, two enclosures are parallel to the up and down direction, two enclosures are connected on the rack, two enclosures are located behind two limit plates, two enclosures are surrounded and formed with containing cavity, the containing cavity is used for stacking multiple metal material pieces, the cylinder body of linear cylinder is connected on the rack and located behind two enclosures, the piston rod of linear cylinder is connected with push plate, the piston rod of linear cylinder can extend and drive push plate to insert the lower end of containing cavity, so that push plate pushes the lowest metal material piece in containing cavity into the area between two limit plates, the piston rod of linear cylinder can retract and drive push plate to extract from containing cavity; Transmission device; The interval conveying device comprises a first transmission shaft, a second transmission shaft, two first chain wheels, two second chain wheels, two chains and multiple push rods, both of the first chain wheels are rotatably connected to the frame, both of the first chain wheels are respectively arranged on the left and right sides of the rear ends of the two limiting plates, the first transmission shaft is connected between the two first chain wheels, both of the second chain wheels are rotatably connected to the frame, both of the second chain wheels are respectively arranged on the left and right sides of the front ends of the two limiting plates, the second transmission shaft is connected between the two second chain wheels, one of the chains is wound around the left first chain wheel and the left second chain wheel, the other chain is wound around the right first chain wheel and the right second chain wheel, the upper parts of the two chains are parallel to the front-back direction and are arranged above the two limiting plates, the multiple push rods are parallel to the left-right direction, the left and right ends of the multiple push rods are respectively connected to the two chains, the multiple push rods above the chains are arranged above the two limiting plates, the area between any two adjacent push rods above the chains is used for accommodating the metal pieces, the piston rod of the linear cylinder can only drive one of the first chain wheels to rotate through the transmission device when the piston rod is extended, so that the push plate pushes the metal pieces into the area between the two push rods at the rear ends of the two limiting plates, and the multiple push rods above the chains respectively push the corner scraps and multiple metal pieces between the two limiting plates forward. The transmission device comprises a connecting rod mechanism, a transmission wheel and a one-way clutch, the transmission wheel is connected to one of the first chain wheels through the one-way clutch, the piston rod of the linear cylinder is connected to the transmission wheel through the connecting rod mechanism, so that the piston rod of the linear cylinder can drive the transmission wheel to rotate, and the transmission wheel drives the one of the first chain wheels to rotate, and the one-way clutch is used to enable the transmission wheel to only drive one of the first chain wheels to rotate in one direction. The waste collecting device is arranged on the frame and is used to collect the corner scraps falling from the front end of the conveying track.

2. The metal strip blanking apparatus according to claim 1, characterized in that: The finished product collecting device comprises a first conveying belt and a finished product box, the first conveying belt is parallel to the front-back direction, the first conveying belt is arranged on the frame and is used to convey the workpieces from back to front, the rear end of the first conveying belt is arranged below the forming hole, so that the workpieces falling from the forming hole can fall on the first conveying belt, and the finished product box is arranged below the front end of the first conveying belt, so that the workpieces falling from the front end of the first conveying belt can fall into the finished product box.

3. The metal strip blanking apparatus according to claim 1, wherein: The left and right ends of the multiple push rods are respectively detachably connected to the two chains, both of the first chain wheels are configured to be adjustable in the front-back direction, and the linear cylinder is configured to be adjustable in the front-back direction.

4. The metal strip blanking apparatus of claim 1, wherein: Both of the fences comprise a baffle, a first baffle strip and a second baffle strip, both of the baffles are connected on the frame, both of the first baffle strips are respectively arranged on the opposite side of the baffles, both of the second baffle strips are respectively arranged on the front side of the baffles, the baffles, the first baffle strips and the second baffle strips form the accommodating cavity, the gap between the second baffle strips and the support plate is used for the front end of the push plate and the single metal sheet to pass through, both of the first baffle strips are configured to be adjustable in the front-back direction to adjust the length of the accommodating cavity in the front-back direction, both of the second baffle strips are configured to be adjustable in the up-down direction to adjust the gap height between the second baffle strips and the support plate.

5. The metal blank stamping apparatus of claim 1, wherein: The waste collecting device comprises a second conveying belt and a waste box, the second conveying belt is parallel to the front-back direction, the second conveying belt is rotatably connected on the frame, the second conveying belt is used for conveying the leftover materials from back to front, the rear end of the second conveying belt is arranged below the front end of the conveying track, so that the leftover materials falling from the front end of the conveying track can fall on the second conveying belt, the waste box is arranged below the front end of the second conveying belt, so that the leftover materials falling from the front end of the second conveying belt can fall into the waste box.

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