Machining mechanism for electric tool accessories

Abstract

The invention relates to a machining mechanism for electric tool accessories, which is applied to the technical field of accessory machining equipment and comprises a mounting worktable, a stamping cylinder mounted at the upper end of the mounting worktable, a stamping head fixed at the lower end of the stamping cylinder and a clamp mounted below the stamping cylinder and matched with the stamping head. A multi-station rotating disc is rotationally connected to the table top of the installation workbench, the clamp is installed in the multi-station rotating disc, the punching cylinder and the punching head are fixedly connected through a fixing plate, and a driven assembly is installed on one side of the fixing plate and used for driving the multi-station rotating disc to rotate clockwise in the lifting process of the fixing plate. An opening and closing piece is fixed to the table top of the mounting workbench and used for enabling the clamp to be opened or clamped, by the adoption of the driven assembly, the opening and closing piece and other structures, the cost of the machining mechanism for the electric tool accessories is reduced, meanwhile, energy consumption in the machining process is reduced, low-cost environment-friendly machining operation is achieved, and the machining efficiency of the electric tool accessories is improved. And the production cost of electric tool accessories is reduced.

Description

Technical Field

[0001] The invention relates to a processing mechanism, in particular to a processing mechanism for electric tool accessories applied in the technical field of accessories processing equipment. Background Art

[0002] Power tool parts processing refers to the process of manufacturing, changing or assembling the various parts or components of power tools. These parts may be made of different materials, such as metal, plastic, etc. There are many ways to process power tool parts, such as machining, CNC machining, heat treatment, surface treatment, etc.

[0003] In the prior art, the electric tool accessory processing mechanism is usually used to place the accessory to be processed on a workbench, clamp and fix the accessory by operating the clamping mechanism, and then operate the processing head to stamp or punch the accessory. During the processing of the accessory, in order to speed up the processing efficiency, a plurality of turntables with multiple workstations are usually used for processing. A clamp is provided on the turntable, and an additional power output device is usually used to control the opening and closing of the clamp and the rotation of the turntable through the workstations. It requires each to use a complex control program to achieve good coordination between the multiple power output devices to complete the processing operation. At the same time, the multiple power output devices increase the equipment cost of the processing mechanism, and more energy is required to output different powers during the processing operation. Summary of the invention

[0004] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is how to design a multi-station processing mechanism for electric tool accessories that can reduce the number of power output devices and ensure the processing effect.

[0005] In order to solve the above problems, the present invention provides a processing mechanism for electric tool accessories, comprising a mounting workbench, a punching cylinder mounted on the upper end of the mounting workbench, a punching head fixed to the lower end of the punching cylinder, and a fixture mounted below the punching cylinder and adapted to the punching head; The tabletop of the installation workbench is rotatably connected to a multi-station turntable, the fixture is installed in the multi-station turntable, and the multi-station turntable is provided with a plurality of station slots distributed along the circumference of the axis of the multi-station turntable, and a plurality of fixtures are provided and respectively installed in the plurality of station slots; The punching cylinder and the punching head are fixedly connected through a fixed plate, and a driven component is installed on one side of the fixed plate. The driven component is used to drive the multi-station turntable to rotate clockwise during the lifting process of the fixed plate; The table top on which the workbench is installed is fixed with an opening and closing piece, which is used to open or clamp the clamp. The opening and closing piece clamps the clamp when the position of the clamp corresponds to the punch head, and opens the clamp when the multi-station turntable is at one end away from the punch head.

[0006] In the processing mechanism of the above-mentioned electric tool accessories, when the punching cylinder drives the punching head to descend, the driven component drives the multi-station turntable to rotate, and finally makes one of the station slots on the multi-station turntable correspond to the position of the punching head. At this time, the opening and closing parts also make the clamp clamp the workpiece at the same time, so that the punching head can perform stamping and punching operations on the workpiece; Compared with the prior art that uses additional power to drive the rotation of the multi-station turntable, the number of power output devices is reduced, thereby reducing equipment costs, and the energy required for processing can also be saved during the processing, thereby achieving low-cost green and environmentally friendly processing; At the same time, the use of opening and closing parts also enables the clamp to automatically clamp and open, so as to facilitate the clamping of the workpiece to be processed and the removal of the completed workpiece, etc., to achieve fully automatic stamping and punching operations without the need for additional power drive; In this way, the processing mechanism cost of the electric tool accessories is reduced, the energy consumption in the processing process is reduced, low-cost green and environmentally friendly processing operations are achieved, and the production cost of the electric tool accessories is reduced.

[0007] As a further supplement to the present application, the clamp includes a movable clamping flap and a fixed clamping flap, the movable clamping flap is elastically connected to the side of the station slot away from the axis of the multi-station turntable through a tension spring, and the fixed clamping flap is fixed to the side of the station slot close to the axis of the multi-station turntable; The opening and closing member is used to drive the movable clamping flap to approach the fixed clamping flap, or to lose the force acting on the movable clamping flap so that the movable clamping flap moves away from the fixed clamping flap under the elastic action of the tension spring.

[0008] As a further supplement to the present application, the opening and closing member includes an adapter ring, a cam-shaped guide hole is provided in the middle of the adapter ring, and the lower end of the movable clamping petal penetrates the station groove and is in sliding contact with the inner wall of the guide hole; The inner diameter of the side of the guide hole away from the punch head is the largest, and the inner diameter of the side of the guide hole close to the punch head is the smallest.

[0009] As a further supplement to the present application, the lower ends of the movable clamping flap and the fixed clamping flap are integrally formed with an extended clamping cylinder, which extends downward to form a semi-cylindrical structure, and an anti-slip strip is provided on the inner side of the extended clamping cylinder.

[0010] As a further supplement to the present application, the driven component includes: A driven rod, the driven rod is an L-shaped rod, one end of the driven rod is fixed to one side of the fixed plate, and the other end of the driven rod extends vertically downward; A movable sleeve rod, the movable sleeve rod is slidably sleeved on the lower end of the driven rod; An inner gear frame, the upper end of which is fixed to the lower end of the movable sleeve rod, and a plurality of vertically distributed gear blocks are arranged on both the left and right sides of the inner gear frame; A half gear, the half gear meshes with the internal gear frame; A connecting shaft which movably penetrates the installation workbench is fixed on the bottom surface of the multi-station turntable, and the connecting shaft and the half gear are connected through a reversing structure transmission.

[0011] As a further supplement to the present application, the reversing structure includes a first bevel gear and a second bevel gear, the first bevel gear is coaxially driven with the half gear through a transmission shaft, and the second bevel gear is meshed with the first bevel gear and fixedly sleeved on the lower end of the connecting shaft; An elastic piece is arranged inside the movable sleeve rod, and the lower end of the driven rod is elastically connected to the inner bottom wall of the movable sleeve rod through the elastic piece.

[0012] As a further supplement to the present application, a finished product collection box is fixed at the lower end of the installation workbench, the feed port of the finished product collection box corresponds to the position of the work station slot away from the side of the stamping head, and a through hole connecting the work station slot and the finished product collection box is opened on the installation workbench.

[0013] As another improvement of the present application, limit rods are fixed on both sides of the fixed plate, the two limit rods are distributed on both sides of the punching head, and the limit rods are retractable support rods; A positioning groove is provided at the upper end of the multi-station turntable, and the lower end of the limit rod is inserted into the positioning groove after the limit rod is lowered.

[0014] To sum up, in the process of the punching head being driven down by the punching cylinder, the driven assembly drives the multi-station turntable to rotate. Specifically, when the fixed plate descends, the driven rod is driven to descend accordingly, and the driven rod further drives the inner gear frame to descend through the movable sleeve rod. When the inner gear frame descends, the half gear is driven to rotate, and the half gear drives the first bevel gear to rotate through the transmission shaft, and the first bevel gear drives the connecting shaft to rotate through the second bevel gear, thereby finally driving the multi-station turntable to rotate. When the fixed plate rises, the multi-station turntable can also be driven to rotate in the same direction, thereby achieving the purpose of driving the multi-station turntable to rotate without additional power equipment. At the same time, after the driven rod drops to a certain height, the inner gear frame and the half gear are pressed against each other. At this time, the driven rod compresses the elastic part and slides along the movable sleeve rod, so that the multi-station turntable stops moving at this time, and the fixed plate and the punch head continue to drop to complete the processing of the workpiece, avoiding affecting the processing operation. Finally, one of the station slots on the multi-station turntable corresponds to the position of the punch head; At this time, the opening and closing parts also enable the fixture to clamp the workpiece at the same time. Specifically, when the multi-station turntable rotates and drives the fixture to rotate synchronously, the movable clamping flap farthest from the punching head gradually approaches the punching head during the rotation process, and gradually approaches the fixed clamping flap under the action of the guide hole, so as to finally cooperate with the fixed clamping flap to clamp the workpiece to be processed. The multi-station turntable continues to rotate after completing the processing, so that the inner diameter of the guide hole gradually increases and loses the squeezing effect with the movable clamping flap. At this time, the movable clamping flap gradually moves away from the fixed clamping flap under the elastic force of the tension spring, loses the clamping effect on the workpiece, and finally enables the workpiece to be separated from the fixture, which is convenient for the removal of the workpiece, so that the punching head can perform stamping and punching operations on the workpiece. Compared with the prior art that uses additional power to drive the rotation of the multi-station turntable, the number of power output devices is reduced, thereby reducing equipment costs, and the energy required for processing can also be saved during the processing, thereby achieving low-cost green and environmentally friendly processing; At the same time, the use of opening and closing parts also enables the clamp to automatically clamp and open, so as to facilitate the clamping of the workpiece to be processed and the removal of the completed workpiece, etc., to achieve fully automatic stamping and punching operations without the need for additional power drive; In this way, the processing mechanism cost of the electric tool accessories is reduced, the energy consumption in the processing process is reduced, low-cost green and environmentally friendly processing operations are achieved, and the production cost of the electric tool accessories is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the first embodiment of the present application; Figure 2 This is an exploded view of the clamp, adapter ring and multi-station turntable of the first embodiment of the present application; Figure 3 This is an enlarged view of the clamp of the first embodiment of the present application; Figure 4 This is a bottom view of the adapter ring and the multi-station turntable of the first embodiment of the present application; Figure 5 This is a schematic diagram of the structure of the driven component of the first embodiment of the present application; Figure 6 This is a schematic diagram of the activities of the fixtures in each station when the multi-station turntable rotates in the first embodiment of the present application; Figure 7 It is a side view of the second embodiment of the present application; Figure 8 This is a schematic diagram of the cooperation between the limit rod and the positioning groove in the second embodiment of the present application.

[0016] Description of the numbers in the figure: 1. Install the workbench; 11. Finished product collection box; 2. Punching cylinder; 21. Punching head; 3. Fixed plate; 4. Multi-station turntable; 41. Station slot; 42. Positioning slot; 43. Connecting shaft; 5. Clamp; 51. Movable clamping flap; 52. Fixed clamping flap; 53. Extended clamping cylinder; 6. Tension spring; 7. Adapter ring; 71. Guide hole; 8. Follower assembly; 81. Follower rod; 82. Movable sleeve rod; 83. Internal gear frame; 84. Half gear; 85. First bevel gear; 86. Second bevel gear; 9. Limit rod. DETAILED DESCRIPTION

[0017] The following describes two implementation modes of the present application in detail with reference to the accompanying drawings.

[0018] The first implementation method: The present invention provides a processing mechanism for electric tool accessories, see Figure 1-Figure 4 , including an installation workbench 1, a punching cylinder 2 installed on the upper end of the installation workbench 1, a punching head 21 fixed to the lower end of the punching cylinder 2, and a fixture 5 installed below the punching cylinder 2 and adapted to the punching head 21; The table surface of the installation workbench 1 is rotatably connected to a multi-station turntable 4, and the fixture 5 is installed in the multi-station turntable 4. The multi-station turntable 4 is provided with a plurality of station slots 41 distributed along the circumference of the axis of the multi-station turntable 4, and the fixture 5 is provided with a plurality of and respectively installed in the plurality of station slots 41; The punching cylinder 2 is fixedly connected to the punching head 21 via a fixed plate 3. A driven component 8 is installed on one side of the fixed plate 3. The driven component 8 is used to drive the multi-station turntable 4 to rotate clockwise during the lifting process of the fixed plate 3. An opening and closing piece is fixed to the table top of the installation workbench 1, and the opening and closing piece is used to open or clamp the clamp 5. The opening and closing piece clamps the clamp 5 when the position of the clamp 5 corresponds to the punch head 21, and opens the clamp 5 when the opening and closing piece is at one end of the multi-station turntable 4 away from the punch head 21.

[0019] Based on the above structure, when the punching cylinder 2 drives the punching head 21 to descend, the driven component 8 drives the multi-station turntable 4 to rotate, and finally makes one of the station slots 41 on the multi-station turntable 4 correspond to the position of the punching head 21. At this time, the opening and closing parts also make the clamp 5 clamp the workpiece, so that the punching head 21 can perform stamping and punching operations on the workpiece; Compared with the prior art that uses additional power to drive the rotation of the multi-station turntable 4, the number of power output devices is reduced, thereby reducing equipment costs, and the energy required for processing can also be saved during the processing, thereby achieving low-cost green and environmentally friendly processing; At the same time, the use of the opening and closing parts also enables the clamp 5 to automatically perform clamping and opening actions, thereby facilitating the clamping of the workpiece to be processed, removing the processed workpiece, etc., and realizing fully automatic stamping and punching operations without the need for additional power drive; In this way, the processing mechanism cost of the electric tool accessories is reduced, the energy consumption in the processing process is reduced, low-cost green and environmentally friendly processing operations are achieved, and the production cost of the electric tool accessories is reduced.

[0020] Figure 2-Figure 3 The clamp 5 is shown to include a movable clamping flap 51 and a fixed clamping flap 52. The movable clamping flap 51 is elastically connected to the side of the station slot 41 away from the axis of the multi-station turntable 4 through a tension spring 6, and the fixed clamping flap 52 is fixed to the side of the station slot 41 close to the axis of the multi-station turntable 4; The opening and closing member is used to drive the movable clamping flap 51 to approach the fixed clamping flap 52 , or to lose the force acting on the movable clamping flap 51 so that the movable clamping flap 51 moves away from the fixed clamping flap 52 under the elastic action of the tension spring 6 .

[0021] Figure 2 The opening and closing member is shown to include an adaptor ring 7, a cam-shaped guide hole 71 is provided in the middle of the adaptor ring 7, and the lower end of the movable clamping flap 51 penetrates the station slot 41 and is in sliding contact with the inner wall of the guide hole 71; The inner diameter of the guide hole 71 at a side away from the punch head 21 is the largest, and the inner diameter of the guide hole 71 at a side close to the punch head 21 is the smallest.

[0022] When the multi-station turntable 4 rotates and drives the clamp 5 to rotate synchronously, the movable clamping flap 51 farthest from the punch head 21 gradually approaches the punch head 21 during the rotation process, and gradually approaches the fixed clamping flap 52 under the action of the guide hole 71, so as to finally cooperate with the fixed clamping flap 52 to clamp the workpiece to be processed. The multi-station turntable 4 continues to rotate after completing the processing, so that the inner diameter of the guide hole 71 gradually increases and loses the squeezing effect with the movable clamping flap 51. At this time, the movable clamping flap 51 gradually moves away from the fixed clamping flap 52 under the elastic force of the tension spring 6, loses the clamping effect on the workpiece, and finally enables the workpiece to be separated from the clamp 5, which is convenient for the workpiece to be taken out; In this way, the purpose of clamping the clamp 5 or opening the clamp 5 without additional power is achieved.

[0023] Figure 3-Figure 4 It is shown that the lower ends of the movable clamping flap 51 and the fixed clamping flap 52 are integrally formed with an extended clamping cylinder 53 , which extends downward to form a semi-cylindrical structure, and an anti-slip strip is provided on the inner side of the extended clamping cylinder 53 .

[0024] Figure 5 The driven assembly 8 is shown to include: A driven rod 81, the driven rod 81 is an L-shaped rod, one end of the driven rod 81 is fixed to one side of the fixing plate 3, and the other end of the driven rod 81 extends vertically downward; A movable sleeve rod 82, which is slidably sleeved on the lower end of the driven rod 81; An inner gear frame 83, the upper end of the inner gear frame 83 is fixed to the lower end of the movable sleeve rod 82, and a plurality of vertically distributed gear blocks are arranged on both the left and right sides of the inner gear frame 83; A half gear 84, the half gear 84 is meshed with the inner gear frame 83; A connecting shaft 43 that movably penetrates the mounting workbench 1 is fixed to the bottom surface of the multi-station turntable 4, and the connecting shaft 43 is transmission-connected to the half gear 84 via a reversing structure.

[0025] The reversing structure includes a first bevel gear 85 and a second bevel gear 86. The first bevel gear 85 is coaxially driven with the half gear 84 through a transmission shaft, and the second bevel gear 86 is meshed with the first bevel gear 85 and fixedly sleeved on the lower end of the connecting shaft 43. An elastic member (not shown in the figure, elastic members commonly used in the prior art and suitable for this embodiment, such as springs and metal springs) is provided in the movable sleeve rod 82, and the lower end of the driven rod 81 is elastically connected to the inner bottom wall of the movable sleeve rod 82 through the elastic member.

[0026] When the fixed plate 3 descends, the driven rod 81 is driven to descend accordingly, and the driven rod 81 further drives the inner gear frame 83 to descend through the movable sleeve rod 82. When the inner gear frame 83 descends, the half gear 84 is driven to rotate, and the half gear 84 drives the first bevel gear 85 to rotate through the transmission shaft, and the first bevel gear 85 drives the connecting shaft 43 to rotate through the second bevel gear 86, thereby finally driving the multi-station turntable 4 to rotate. When the fixed plate 3 rises, it can also drive the multi-station turntable 4 to rotate in the same direction, thereby achieving the purpose of driving the multi-station turntable 4 to rotate without additional power equipment; At the same time, after the driven rod 81 drops to a certain height, the inner gear frame 83 and the half gear 84 are pressed against each other. At this time, the driven rod 81 compresses the elastic part and slides along the movable sleeve rod 82, so that the multi-station turntable 4 stops moving at this time, and the fixed plate 3 and the punch head 21 continue to descend to complete the processing of the workpiece, avoiding affecting the processing operation.

[0027] It should be noted that in order to ensure the smooth progress of the processing operation, the driven component 8 is configured to drive the multi-station turntable 4 to rotate a distance of one station in the double-stroke movement with the fixed plate 3 (that is, the fixed plate 3 completes one lifting movement), thereby ensuring that there is always a station corresponding to the position of the punch head 21 when the workpiece is processed.

[0028] Figure 1 , Figure 7It is shown that a finished product collection box 11 is fixed at the lower end of the installation workbench 1, and the feed port of the finished product collection box 11 corresponds to the position of the work station slot 41 on the side away from the punch head 21. A through hole connecting the work station slot 41 and the finished product collection box 11 is opened on the installation workbench 1. The collection box 11 can automatically collect the workpieces falling out of the work station slot 41, thereby completing the collection of the workpieces after processing.

[0029] Second implementation method: Figure 7-Figure 8 Another processing mechanism of an electric tool accessory is shown, which is different from the first embodiment in that: The fixing plate 3 is fixed with limit rods 9 on both sides. The two limit rods 9 are distributed on both sides of the punching head 21. The limit rods 9 are retractable support rods. A positioning groove 42 is provided at the upper end of the multi-station turntable 4, and the lower end of the limiting rod 9 is inserted into the positioning groove 42 after the limiting rod 9 is lowered.

[0030] By setting the limit rod 9, the multi-station turntable 4 can be further limited to ensure that the punch head 21 does not deflect the multi-station turntable 4 when processing the workpiece, thereby affecting the processing of the workpiece and further improving the yield rate of the workpiece after processing.

[0031] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A processing mechanism for electric tool accessories, comprising a mounting workbench (1), a punching cylinder (2) mounted on the upper end of the mounting workbench (1), a punching head (21) fixed to the lower end of the punching cylinder (2), and a fixture (5) mounted below the punching cylinder (2) and adapted to the punching head (21), characterized in that: The tabletop of the installation workbench (1) is rotatably connected to a multi-station turntable (4), the fixture (5) is installed in the multi-station turntable (4), the multi-station turntable (4) is provided with a plurality of station slots (41) distributed along the circumference of the axis of the multi-station turntable (4), and the fixture (5) is provided with a plurality of slots (41) and is respectively installed in the plurality of station slots (41); The punching cylinder (2) and the punching head (21) are fixedly connected via a fixed plate (3), a driven component (8) is installed on one side of the fixed plate (3), and the driven component (8) is used to drive the multi-station turntable (4) to rotate clockwise during the lifting and lowering process of the fixed plate (3); An opening and closing piece is fixed to the tabletop of the installation workbench (1), and the opening and closing piece is used to open or clamp the clamp (5). When the position of the clamp (5) corresponds to that of the punch head (21), the opening and closing piece clamps the clamp (5), and when the position of the multi-station turntable (4) is at one end away from the punch head (21), the opening and closing piece opens the clamp (5).

2. The processing mechanism for electric tool accessories according to claim 1, characterized in that: The clamp (5) comprises a movable clamping flap (51) and a fixed clamping flap (52); the movable clamping flap (51) is elastically connected to a side of the workstation slot (41) away from the axis of the multi-station turntable (4) via a tension spring (6); and the fixed clamping flap (52) is fixed to a side of the workstation slot (41) close to the axis of the multi-station turntable (4); The opening and closing member is used to drive the movable clamping flap (51) to approach the fixed clamping flap (52), or to lose the force acting on the movable clamping flap (51) so that the movable clamping flap (51) moves away from the fixed clamping flap (52) under the elastic action of the tension spring (6).

3. The processing mechanism for electric tool accessories according to claim 2, characterized in that: The opening and closing member comprises an adaptor ring (7), a cam-shaped guide hole (71) is provided in the middle of the adaptor ring (7), and the lower end of the movable clamping flap (51) passes through the station groove (41) and is in sliding contact with the inner wall of the guide hole (71); The inner diameter of the side of the guide hole (71) away from the punch head (21) is the largest, and the inner diameter of the side of the guide hole (71) close to the punch head (21) is the smallest.

4. The processing mechanism for electric tool accessories according to claim 2, characterized in that: An extended clamping cylinder (53) is integrally formed at the lower ends of the movable clamping petal (51) and the fixed clamping petal (52); the extended clamping cylinder (53) extends downward to form a semi-cylindrical structure; an anti-slip strip is provided on the inner side of the extended clamping cylinder (53).

5. The processing mechanism for electric tool accessories according to claim 1, characterized in that: The driven component (8) comprises: A driven rod (81), the driven rod (81) being an L-shaped rod, one end of the driven rod (81) being fixed to one side of the fixing plate (3), and the other end of the driven rod (81) extending vertically downward; A movable sleeve rod (82), wherein the movable sleeve rod (82) is slidably sleeved on the lower end of the driven rod (81); An inner tooth frame (83), the upper end of the inner tooth frame (83) being fixed to the lower end of the movable sleeve rod (82), and a plurality of vertically distributed tooth blocks being arranged on both left and right sides of the inner tooth frame (83); A half gear (84), wherein the half gear (84) is meshed with the inner gear frame (83); A connecting shaft (43) that movably penetrates the mounting workbench (1) is fixed to the bottom surface of the multi-station turntable (4), and the connecting shaft (43) is transmission-connected to the half gear (84) via a reversing structure.

6. The processing mechanism for electric tool accessories according to claim 5, characterized in that: The reversing structure comprises a first bevel gear (85) and a second bevel gear (86), wherein the first bevel gear (85) is coaxially driven with the half gear (84) via a transmission shaft, and the second bevel gear (86) is meshed with the first bevel gear (85) and fixedly sleeved on the lower end of the connecting shaft (43); An elastic member is provided inside the movable sleeve rod (82), and the lower end of the driven rod (81) is elastically connected to the inner bottom wall of the movable sleeve rod (82) via the elastic member.

7. The processing mechanism for electric tool accessories according to claim 5, characterized in that: Limit rods (9) are fixed on both left and right sides of the fixed plate (3), and the two limit rods (9) are distributed on both sides of the punching head (21), and the limit rods (9) are retractable support rods; A positioning groove (42) is provided at the upper end of the multi-station turntable (4), and the lower end of the limit rod (9) is inserted into the positioning groove (42) after the limit rod (9) descends.

8. A processing mechanism for electric tool accessories according to any one of claims 1 to 7, characterized in that: A finished product collection box (11) is fixed at the lower end of the installation workbench (1), a feed port of the finished product collection box (11) corresponds to the position of a work station slot (41) on a side away from the punch head (21), and a through hole connecting the work station slot (41) and the finished product collection box (11) is provided on the installation workbench (1).

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