A tapered hole punching device for piston pin production and its usage method

Abstract

This invention discloses a tapered hole punching device for piston pin production and its usage method. A platform is provided on the top of the frame, and a punching mechanism is installed on the platform. The punching mechanism includes a lifting assembly and an electromagnetic punching assembly. The electromagnetic punching assembly moves up and down with the lifting assembly. A fixture plate is provided below the electromagnetic punching assembly, and a movable base is provided at the bottom of the fixture plate. A movable unloading mechanism is provided between the movable base and the fixture plate. After one end of the piston pin is punched, it can be attracted by the electromagnetic punching head on the electromagnetic plate. The flipping electromagnetic plate slides under the electromagnetic punching head via a telescopic slide rail assembly. Then, the piston pin is placed on the flipping electromagnetic plate, attracted, and rotated 180 degrees, so that the other end of the piston pin faces upward. The electromagnetic punching head then places the piston pin back onto the fixture plate for punching. This speeds up the replacement of piston pins and improves production efficiency.

Description

Technical Field

[0001] This invention belongs to the field of piston pin manufacturing and processing technology, specifically relating to a tapered hole punching device for piston pin production and its usage method. Background Technology

[0002] A piston pin is a cylindrical pin installed on the piston skirt. Its center passes through the connecting rod small end bore to connect the piston and connecting rod. Its function is to transmit the gas force acting on the piston to the connecting rod, or to cause the connecting rod small end to move with the piston. To reduce weight, piston pins are generally made of high-quality alloy steel and are hollow. The inner bore of the piston pin is generally cylindrical or conical, and this conical inner bore is usually formed by stamping using a stamping machine.

[0003] In the existing double-ended conical piston pin manufacturing process, both ends of the piston pin need to be stamped in a straight line. During the second stamping, the piston pins need to be switched one by one so that one end faces upwards before stamping. This piston pin switching operation is generally done manually, which is time-consuming and results in low production efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a tapered hole punching device for piston pin production and its usage method, so as to solve the problem mentioned in the background art that the manual operation of changing piston pins is time-consuming and results in low production efficiency.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a tapered hole punching device for piston pin production, comprising a frame, a table at the top of the frame, a punching mechanism mounted on the table, the punching mechanism comprising a lifting assembly and an electromagnetic punching assembly, the electromagnetic punching assembly moving up and down with the lifting assembly, a fixture plate below the electromagnetic punching assembly, a movable base at the bottom of the fixture plate, and a movable unloading mechanism between the movable base and the fixture plate, the movable unloading mechanism comprising a lifting assembly and a lead screw assembly, the movable base being movably connected to the table via the lead screw assembly, the fixture plate being connected to the movable base via the lifting assembly, and a telescopic flipping mechanism between the electromagnetic punching assembly and the fixture plate, the telescopic flipping mechanism comprising an electromagnetic flipping assembly and a telescopic slide rail assembly.

[0006] Preferably, the lifting assembly includes guide columns, a top plate, a stamping cylinder, and a mounting slide. Multiple guide columns are provided, and the multiple guide columns are respectively fixedly installed around the perimeter of the platform. The top of the multiple guide columns is equipped with the same top plate, and the top of the top plate is fixedly installed with a stamping cylinder. The multiple guide columns are fitted with the same mounting slide. The cylinder rod of the stamping cylinder passes through the top plate and is fixedly connected to the top of the mounting slide.

[0007] Preferably, the electromagnetic stamping assembly includes an electromagnetic plate and electromagnetic stamping heads. The electromagnetic plate is fixedly installed on the bottom surface of the mounting slide. Multiple conical electromagnetic stamping heads are uniformly fixed on the bottom surface of the electromagnetic plate to facilitate stamping and to facilitate free adsorption and detachment from the piston pin.

[0008] Preferably, the lead screw assembly includes a servo motor, a threaded shaft, and a lead screw slider. A groove is provided on the table for mounting the threaded shaft. The two ends of the threaded shaft are rotatably connected to the two ends of the groove. A servo motor is fixedly installed at the rear end of the table to provide power for the movement of the movable base. The servo motor is connected to one end of the threaded shaft through a reduction gearbox. A lead screw slider is sleeved on the threaded shaft, and the lead screw slider extends vertically upward and is fixedly connected to the bottom of the movable base to facilitate the movement of the movable base.

[0009] Preferably, the lifting assembly includes a lifting cylinder and a hinge. The lifting cylinder is installed inside the movable base, and one end of the lifting cylinder is rotatably connected to the movable base via a shaft. The other end of the lifting cylinder is rotatably connected to the bottom of the jig plate. One end of the jig plate is movably connected to one end of the movable base via a hinge. The top of the jig plate is evenly provided with multiple jig slots to facilitate subsequent lifting and unloading.

[0010] Preferably, the telescopic slide rail assembly includes an extension bracket, a telescopic cylinder, a fixed rail frame, a sliding rail frame, and a telescopic rod. The extension bracket is fixedly installed on one side of the frame, and the fixed rail frame is fixedly installed on one side of the extension bracket. The sliding rail frame is slidably arranged on the inner side of the fixed rail frame, and one end of the sliding rail frame extends between the electromagnetic plate and the fixture plate. The extension bracket is equipped with a telescopic cylinder, and one end of the telescopic cylinder is provided with a telescopic rod. The other end of the telescopic rod is fixedly connected to the sliding rail frame. In order to achieve free telescopic movement, an electromagnetic flipping assembly is installed on the inner side of the sliding rail frame.

[0011] Preferably, the electromagnetic flipping assembly includes a flipping motor and a flipping electromagnetic plate. The flipping electromagnetic plate is rotatably mounted on the inner side of the sliding rail frame via a rotating shaft, and the flipping electromagnetic plate is provided with through holes corresponding to the electromagnetic punch head and the fixture slot. The flipping motor is fixedly installed on the outer side of the sliding rail frame, and the flipping motor is connected to one end of the rotating shaft through a reduction gearbox for convenient flipping movement.

[0012] Preferably, the inner side of the fixed rail frame is provided with an anti-detachment groove, and one end of the sliding rail frame is provided with an anti-detachment slider, which extends into the anti-detachment groove for sliding connection. This mainly serves to limit and prevent detachment, ensuring stable telescopic sliding.

[0013] A method for using a tapered hole punching device for piston pin production, step one: place the piston pin in the corresponding fixture slot on the fixture plate, start the punching cylinder, drive the mounting slide and the electromagnetic punching head on the electromagnetic plate to descend together, and punch the top of the piston pin on the fixture plate.

[0014] Step 2: After stamping is completed, the electromagnetic plate and electromagnetic stamping head are energized. Under the action of the stamping cylinder, the mounting slide is lifted, and the piston pin on the jig plate is attracted by the electromagnetic stamping head and rises synchronously to the initial position of the mounting slide.

[0015] Step 3: Activate the telescopic cylinder to push the sliding rail frame to extend directly below the mounting slide via the telescopic rod. Activate the stamping cylinder again to lower the piston pin attracted by the electromagnetic stamping head into the through hole on the flip electromagnetic plate. Then, energize the flip electromagnetic plate to attract the piston pin, de-energize the electromagnetic plate, and raise the mounting slide to the initial position under the action of the stamping cylinder.

[0016] Step 4: Restart the flipping motor to flip the electromagnetic plate so that the end of the piston pin that is not stamped is vertically upward. Then, the electromagnetic stamping head on the electromagnetic plate descends again with the mounting slide to attract and lift the piston pin out of the through hole. At the same time, the flipping electromagnetic plate is de-energized, and the sliding rail is retracted. The electromagnetic stamping head of the electromagnetic plate descends and is placed on the fixture plate for the stamping process to be performed again.

[0017] Step 5: After stamping is completed, the movable base and the jig plate move forward synchronously through the lead screw assembly. Then, the cylinder lifts the jig plate, causing it to flip over and pour the pre-machined piston pins from the jig plate into the collection box placed at the front of the machine frame.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention designs a retractable and tumbling electromagnetic plate and an electromagnetic punch head with electromagnetic function. After one end of the piston pin is punched, the electromagnetic punch head on the electromagnetic plate can attract the piston pin with one end punched. The retractable electromagnetic plate slides to the underside of the electromagnetic punch head through the telescopic slide rail assembly. Then, the piston pin is placed on the retractable electromagnetic plate and flipped 180 degrees to make the other end of the piston pin face upward. The electromagnetic punch head then places the piston pin back onto the jig plate for punching. This speeds up the replacement of piston pins and improves production efficiency. Attached Figure Description

[0019] Figure 1 This is a front view structural diagram of the present invention;

[0020] Figure 2 This is a top cross-sectional view of the telescopic flipping mechanism of the present invention;

[0021] Figure 3This is a top view schematic diagram of the fixture plate installation according to the present invention;

[0022] Figure 4 This is a side sectional view of the fixture plate mounting structure of the present invention.

[0023] In the diagram: 1. Frame; 2. Tabletop; 3. Guide column; 4. Top plate; 5. Stamping cylinder; 6. Mounting slide; 7. Tilting motor; 8. Movable base; 9. Fixture plate; 10. Extension bracket; 11. Telescopic cylinder; 12. Fixed rail frame; 13. Sliding rail frame; 14. Electromagnetic plate; 15. Anti-detachment slider; 16. Telescopic rod; 17. Anti-detachment groove; 18. Tilting electromagnetic plate; 19. Threaded shaft; 20. Lead screw slider; 21. Lifting cylinder. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Please see Figures 1 to 4 This invention provides a technical solution: a tapered hole punching device for piston pin production, comprising a frame 1, a table 2 on the top of the frame 1, and a punching mechanism mounted on the table 2. To facilitate the punching of piston pins, the punching mechanism includes a lifting assembly and an electromagnetic punching assembly. The electromagnetic punching assembly moves up and down with the lifting assembly. To facilitate the flexible up-and-down movement of the electromagnetic punching assembly and achieve flexible punching and retraction, a fixture plate 9 is provided below the electromagnetic punching assembly. To facilitate the placement of piston pins, a movable base 8 is provided at the bottom of the fixture plate 9, and the movable base 8 is connected to... A movable unloading mechanism is provided between the fixture plates 9. The movable unloading mechanism includes a lifting component and a lead screw component. The movable base 8 and the table 2 are movably connected through the lead screw component. In order to facilitate the horizontal movement of the movable base 8 and the fixture plate 9, the fixture plate 9 and the movable base 8 are connected through the lifting component. In order to facilitate the lifting of the fixture 9 and realize automatic unloading, a telescopic flipping mechanism is provided between the electromagnetic stamping component and the fixture plate 9. The telescopic flipping mechanism includes an electromagnetic flipping component and a telescopic slide rail component. In order to facilitate the flipping of the piston pin, it is convenient to perform stamping processing on the other end of the piston pin.

[0026] In this embodiment, preferably, the lifting assembly includes guide columns 3, a top plate 4, a stamping cylinder 5, and a mounting slide 6. Multiple guide columns 3 are provided, and the multiple guide columns 3 are respectively fixedly installed around the platform 2. The top of the multiple guide columns 3 is equipped with the same top plate 4. The top of the top plate 4 is fixedly installed with the stamping cylinder 5. The multiple guide columns 3 are fitted with the same mounting slide 6. The cylinder rod of the stamping cylinder 5 passes through the top plate 4 and is fixedly connected to the top of the mounting slide 6.

[0027] In this embodiment, preferably, the electromagnetic stamping assembly includes an electromagnetic plate 14 and an electromagnetic stamping head. The electromagnetic plate 14 is fixedly installed on the bottom surface of the mounting slide 6, and a plurality of conical electromagnetic stamping heads are uniformly fixed on the bottom surface of the electromagnetic plate 14.

[0028] In this embodiment, preferably, the lead screw assembly includes a servo motor, a threaded shaft 19, and a lead screw slider 20. A groove for mounting the threaded shaft 19 is provided on the table 2. The two ends of the threaded shaft 19 are rotatably connected to the two ends of the groove. For easy installation, a servo motor is fixedly installed at the rear end of the table 2 to provide power for the rotation of the threaded shaft 19. The servo motor is connected to one end of the threaded shaft 19 through a reduction gearbox. The lead screw slider 20 is sleeved on the threaded shaft 19 and extends vertically upward and is fixedly connected to the bottom of the movable base 8 to realize the horizontal movement of the movable base 8. This allows the movable base 8 and the fixture plate 9 to move forward to the edge, facilitating subsequent lifting and unloading.

[0029] In this embodiment, preferably, the lifting assembly includes a lifting cylinder 21 and a hinge. The lifting cylinder 21 is installed inside the movable base 8, and one end of the lifting cylinder 21 is rotatably connected to the movable base 8 via a shaft. The other end of the lifting cylinder 21 is rotatably connected to the bottom of the jig plate 9. One end of the jig plate 9 is movably connected to one end of the movable base 8 via a hinge. The top of the jig plate 9 is evenly provided with multiple jig slots to facilitate lifting and unloading.

[0030] In this embodiment, preferably, the telescopic slide rail assembly includes an extension bracket 10, a telescopic cylinder 11, a fixed rail frame 12, a sliding rail frame 13, and a telescopic rod 16. The extension bracket 10 is fixedly installed on one side of the frame 1. To ensure a secure installation, a fixed rail frame 12 is fixedly installed on one side of the extension bracket 10. A sliding rail frame 13 is slidably arranged on the inner side of the fixed rail frame 12. To facilitate telescopic sliding, one end of the sliding rail frame 13 extends between the electromagnetic plate 14 and the fixture plate 9. A telescopic cylinder 11 is installed on the extension bracket 10. A telescopic rod 16 is provided at one end of the telescopic cylinder 11, and the other end of the telescopic rod 16 is fixedly connected to the sliding rail frame 13. To facilitate the active telescopic movement of the sliding rail frame 13, an electromagnetic flipping assembly is installed on the inner side of the sliding rail frame 13 to facilitate the flipping of the piston pin.

[0031] In this embodiment, preferably, the electromagnetic flipping assembly includes a flipping motor 7 and a flipping electromagnetic plate 18. The flipping electromagnetic plate 18 is rotatably mounted on the inner side of the sliding rail frame 13 via a rotating shaft, and the flipping electromagnetic plate 18 is provided with through holes corresponding to the electromagnetic punch head and the fixture slot. In order to ensure that the piston pin on the electromagnetic punch head can be accurately placed into the through hole on the flipping electromagnetic plate 18, the flipping motor 7 is fixedly provided on the outer side of the sliding rail frame 13, and the flipping motor 7 is connected to one end of the rotating shaft through a reduction gearbox to provide power for the flipping of the flipping electromagnetic plate 18.

[0032] In this embodiment, preferably, the inner side of the fixed rail frame 12 is provided with an anti-detachment groove 17, and one end of the sliding rail frame 13 is provided with an anti-detachment slider 15, and the anti-detachment slider 15 extends into the anti-detachment groove 17 for sliding connection, in order to play the role of limiting detachment and preventing the fixed rail frame 12 and the sliding rail frame 13 from completely separating.

[0033] A method of using a tapered hole punching device for piston pin production, step one: place the piston pin in the corresponding fixture slot on the fixture plate 9, start the punching cylinder 5, drive the mounting slide 6 and the electromagnetic punching head on the electromagnetic plate 14 to descend together, and punch the top of the piston pin on the fixture plate 9.

[0034] Step 2: After the stamping is completed, the electromagnetic plate 14 and the electromagnetic stamping head are energized. Under the action of the stamping cylinder 5, the mounting slide 6 is lifted. The piston pin on the jig plate 9 is attracted by the electromagnetic stamping head and rises synchronously to the initial position of the mounting slide 6.

[0035] Step 3: Start the telescopic cylinder 11, push the sliding rail frame 13 to extend to directly below the mounting slide 6 through the telescopic rod 16, start the stamping cylinder 5 again, put the piston pin attracted by the electromagnetic stamping head down into the through hole on the flip electromagnetic plate 18, then turn on the flip electromagnetic plate 18 to attract the piston pin, turn off the electromagnetic plate 14, and the mounting slide 6 rises to the initial position under the action of the stamping cylinder 5.

[0036] Step 4: Restart the flipping motor 7 to drive the flipping electromagnetic plate 18 to flip, so that the end of the piston pin that is not stamped is vertically upward. Then, the electromagnetic stamping head on the electromagnetic plate 14 descends again with the mounting slide 6, attracting the piston pin and lifting it out of the through hole. At the same time, the flipping electromagnetic plate 18 is de-energized, and then the sliding rail frame 13 is retracted. The electromagnetic stamping head of the electromagnetic plate 14 descends and is placed on the fixture plate 9, and the stamping process is performed again.

[0037] Step 5: After stamping is completed, the movable base 8 and the fixture plate 9 are driven to move forward synchronously through the lead screw assembly. Then, the cylinder 21 is lifted to push the fixture plate 9 up, so that the fixture plate 9 is flipped and the piston pin that has been processed on the fixture plate 9 is poured out into the collection box that has been placed in advance at the front end of the frame 1.

[0038] The working principle and usage process of this invention are as follows: When using this invention, the piston pin is placed in the corresponding fixture slot on the fixture plate 9. The stamping cylinder 5 is activated, causing the mounting slide 6 and the electromagnetic stamping head on the electromagnetic plate 14 to descend together, stamping the top of the piston pin on the fixture plate 9. After stamping, the electromagnetic plate 14 and the electromagnetic stamping head are energized. Under the action of the stamping cylinder 5, the mounting slide 6 is raised, and the piston pin on the fixture plate 9 is attracted by the electromagnetic stamping head and rises synchronously to the initial position of the mounting slide 6. The telescopic cylinder 11 is activated, pushing the sliding rail frame 13 to extend directly below the mounting slide 6 via the telescopic rod 16. The stamping cylinder 5 is activated again, lowering the piston pin attracted by the electromagnetic stamping head into the through hole on the flipping electromagnetic plate 18, and then flipping it over. When the electromagnetic plate 18 is energized, it attracts the piston pin. When the electromagnetic plate 14 is de-energized, the flipping motor 7 is started, which drives the flipping electromagnetic plate 18 to flip so that the piston pin at the end that has not been stamped faces upward. The electromagnetic stamping head on the electromagnetic plate 14 descends again with the mounting slide 6 and attracts the piston pin. At the same time, the flipping electromagnetic plate 18 is de-energized, and then the sliding rail frame 13 is retracted. The electromagnetic stamping head of the electromagnetic plate 14 descends and is placed on the fixture plate 9 for another stamping process. After stamping is completed, the movable base 8 and the fixture plate 9 move forward synchronously through the lead screw assembly. Then the lifting cylinder 21 lifts the fixture plate 9, causing the fixture plate 9 to flip and pour the processed piston pin on the fixture plate 9 into the collection box placed at the front end of the frame 1.

[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tapered hole punching device for piston pin production, comprising a frame (1), characterized in that: The top of the frame (1) is provided with a table (2), and a stamping mechanism is installed on the table (2). The stamping mechanism includes a lifting component and an electromagnetic stamping component. The electromagnetic stamping component moves up and down with the lifting component. A jig plate (9) is provided below the electromagnetic stamping component. A movable base (8) is provided at the bottom of the jig plate (9). A moving unloading mechanism is provided between the movable base (8) and the jig plate (9). The moving unloading mechanism includes a lifting component and a lead screw component. The movable base (8) is movably connected to the table (2) through the lead screw component. The jig plate (9) is connected to the movable base (8) through the lifting component. A telescopic flipping mechanism is provided between the electromagnetic stamping component and the jig plate (9). The telescopic flipping mechanism includes an electromagnetic flipping component and a telescopic slide rail component. The lifting assembly includes guide columns (3), a top plate (4), a stamping cylinder (5), and a mounting slide (6). Multiple guide columns (3) are provided, and multiple guide columns (3) are fixedly installed around the table surface (2). The top of the multiple guide columns (3) is equipped with the same top plate (4). The top of the top plate (4) is fixedly installed with a stamping cylinder (5). The multiple guide columns (3) are fitted with the same mounting slide (6). The cylinder rod of the stamping cylinder (5) passes through the top plate (4) and is fixedly connected to the top of the mounting slide (6). The electromagnetic stamping assembly includes an electromagnetic plate (14) and an electromagnetic stamping head. The electromagnetic plate (14) is fixedly installed on the bottom surface of the mounting slide (6). Multiple conical electromagnetic stamping heads are uniformly fixed on the bottom surface of the electromagnetic plate (14). The lead screw assembly includes a servo motor, a threaded shaft (19), and a lead screw slider (20). The platform (2) has a groove for mounting the threaded shaft (19). The two ends of the threaded shaft (19) are rotatably connected to the two ends of the groove. The rear end of the platform (2) is fixedly equipped with a servo motor, and the servo motor is connected to one end of the threaded shaft (19) through a gearbox. The threaded shaft (19) is fitted with a lead screw slider (20), and the lead screw slider (20) extends vertically upward and is fixedly connected to the bottom of the movable base (8). The lifting assembly includes a lifting cylinder (21) and a hinge. The lifting cylinder (21) is installed in the movable base (8), and one end of the lifting cylinder (21) is rotatably connected to the movable base (8) via a shaft. The other end of the lifting cylinder (21) is rotatably connected to the bottom of the jig plate (9). One end of the jig plate (9) is movably connected to one end of the movable base (8) via a hinge. The top of the jig plate (9) is evenly provided with multiple jig slots. The telescopic slide rail assembly includes an extension bracket (10), a telescopic cylinder (11), a fixed rail frame (12), a sliding rail frame (13), and a telescopic rod (16). The extension bracket (10) is fixedly installed on one side of the frame (1). A fixed rail frame (12) is fixedly installed on one side of the extension bracket (10). A sliding rail frame (13) is slidably arranged on the inner side of the fixed rail frame (12). One end of the sliding rail frame (13) extends between the electromagnetic plate (14) and the fixture plate (9). A telescopic cylinder (11) is installed on the extension bracket (10). A telescopic rod (16) is provided on one end of the telescopic cylinder (11). The other end of the telescopic rod (16) is fixedly connected to the sliding rail frame (13). An electromagnetic flipping assembly is installed on the inner side of the sliding rail frame (13). The electromagnetic flipping assembly includes a flipping motor (7) and a flipping electromagnetic plate (18). The flipping electromagnetic plate (18) is rotatably mounted on the inner side of the sliding rail frame (13) via a rotating shaft. The flipping electromagnetic plate (18) is provided with through holes corresponding to the electromagnetic punch head and the fixture slot. The flipping motor (7) is fixedly installed on the outer side of the sliding rail frame (13). The flipping motor (7) is connected to one end of the rotating shaft via a reduction gearbox.

2. The tapered hole punching device for piston pin production according to claim 1, characterized in that: The inner side of the fixed rail frame (12) is provided with an anti-detachment groove (17), and one end of the sliding rail frame (13) is provided with an anti-detachment slider (15), and the anti-detachment slider (15) extends into the anti-detachment groove (17) for sliding connection.

3. A method of using a tapered hole punching device for piston pin production as described in any one of claims 1-2, characterized in that: Step 1: Place the piston pin in the corresponding fixture slot on the fixture plate (9), start the stamping cylinder (5), and drive the mounting slide (6) and the electromagnetic stamping head on the electromagnetic plate (14) to descend together to stamp the top of the piston pin on the fixture plate (9). Step 2: After the stamping is completed, the electromagnetic plate (14) and the electromagnetic stamping head are energized. Under the action of the stamping cylinder (5), the mounting slide (6) is lifted. The piston pin on the jig plate (9) is attracted by the electromagnetic stamping head and rises synchronously to the initial position of the mounting slide (6). Step 3: Start the telescopic cylinder (11), push the sliding rail frame (13) to extend to the underside of the mounting slide (6) through the telescopic rod (16), start the stamping cylinder (5) again, put the piston pin attracted by the electromagnetic stamping head down into the through hole on the flip electromagnetic plate (18), then turn on the flip electromagnetic plate (18) to attract the piston pin, turn off the electromagnetic plate (14), and the mounting slide (6) rises to the initial position under the action of the stamping cylinder (5); Step 4: Restart the flipping motor (7) to drive the flipping electromagnetic plate (18) to flip, so that the end of the piston pin that is not stamped is vertically upward. Then the electromagnetic stamping head on the electromagnetic plate (14) descends again with the mounting slide (6) to attract the piston pin and lift it out of the through hole. At the same time, the flipping electromagnetic plate (18) is de-energized, and then the sliding rail frame (13) is retracted. The electromagnetic stamping head of the electromagnetic plate (14) descends and is placed on the jig plate (9) for stamping process to be performed again. Step 5: After stamping is completed, the movable base (8) and the jig plate (9) are driven to move forward synchronously through the lead screw assembly. Then, the cylinder (21) is lifted to push the jig plate (9) up, so that the jig plate (9) is flipped over and the piston pin that has been processed on the jig plate (9) is poured out into the collection box that has been placed in advance at the front end of the frame (1).

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