A punch device for producing a piston pin

Abstract

The present application relates to the technical field of piston pin production and processing, in particular to a taper hole stamping device for piston pin production, which comprises a stamping box, a stamping mechanism is arranged at the position close to the top inside the stamping box, a sliding chassis is slidably installed at the position close to the bottom of the stamping box, a first stamping area and a second stamping area are respectively arranged at the positions close to the two ends of the upper surface of the sliding chassis, the first stamping area and the second stamping area are completely the same in structure and symmetrically arranged, the first stamping area comprises a recessed groove and a stamping hole, and the recessed groove is located at the side of the stamping hole; the beneficial effects of the present application are that the first stamping area and the second stamping area are respectively arranged at the positions close to the two ends of the upper surface of the sliding chassis, so that the two stamping areas can alternately enter the stamping box to work, and the stamping area remaining outside can be used for the operators to carry out feeding, discharging and head changing and the like, so that the device can continuously operate and the work efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of piston pin manufacturing technology, specifically to a tapered hole punching device for piston pin manufacturing. Background Technology

[0002] A piston pin is a cylindrical pin installed on the piston skirt. Its center passes through the connecting rod small end hole to connect the piston and the connecting rod. Its function is to transmit the gas force on the piston to the connecting rod, or to make the connecting rod small end drive the piston to move together. In order to reduce weight, piston pins are generally made of high-quality alloy steel and are hollow. The inner hole of the piston pin is generally cylindrical or conical. This conical inner hole is generally formed by stamping using stamping equipment.

[0003] Chinese patent document CN 115740184A discloses a tapered hole punching device for piston pin production and its usage method. The top of the frame is provided with a table, and a punching mechanism is installed on the table. The punching mechanism includes a lifting component and an electromagnetic punching component. The electromagnetic punching component moves up and down with the lifting component. A fixture plate is provided below the electromagnetic punching component, 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, the piston pin can be attracted by the electromagnetic punching head on the electromagnetic plate. The flipping electromagnetic plate slides under the electromagnetic punching head through the telescopic slide rail assembly. Then, the piston pin is placed on the flipping electromagnetic plate, attracted, and flipped 180 degrees, so that the other end of the piston pin faces upward. The piston pin is then placed back on the fixture plate by the electromagnetic punching head for punching. This speeds up the replacement of piston pins and improves production efficiency.

[0004] Although the above-mentioned device can change the piston pin, in actual operation, the stamping equipment needs to be stopped and restarted after the change is completed, which wastes a lot of time. In addition, the device disclosed above cannot guarantee the accuracy of the piston pin changing operation.

[0005] Therefore, a tapered hole punching device for piston pin production is needed to solve the above problems. Summary of the Invention

[0006] To address the aforementioned problems, namely the inability of existing stamping equipment to properly change piston pin heads and to operate continuously, this invention provides a tapered hole stamping device for piston pin production.

[0007] A tapered hole stamping device for piston pin production includes a stamping box. A stamping mechanism is located near the top of the stamping box. A sliding base is slidably mounted through the stamping box near the bottom. A first stamping area and a second stamping area are respectively located near both ends of the upper surface of the sliding base. The first and second stamping areas have identical structures and are symmetrically arranged. The first stamping area includes an indentation groove and a stamping hole. The indentation groove is located on the side of the stamping hole. A transverse sliding plate is slidably mounted inside the indentation groove. A pressing rod is slidably mounted on the inner side of the transverse sliding plate. A control mechanism is located at one end of the transverse sliding plate and connected to the pressing rod. An ejection mechanism is located at the bottom of the stamping hole. The device utilizes the sliding base... The upper surface is equipped with a first stamping zone and a second stamping zone near both ends, allowing the two stamping zones to alternately enter the stamping box for work. The remaining stamping zone on the outside can be used by operators for loading, unloading, and head changing, enabling continuous operation of the device and improving work efficiency. A transverse slide plate is slidably installed in the recessed groove, and a pressing rod is installed on the inner side of the transverse slide plate. After one end of the piston pin is pressed, the ejection mechanism pushes the piston pin out. Then, the control mechanism controls the pressing rod to press the side of the piston pin. Due to the weight difference between the two ends of the piston pin, the unpunched end will rotate downward around the pressing rod, achieving the effect of head changing. Then, the piston pin is lowered to complete the head changing. The whole process is simple to operate and does not use external power or other energy, achieving energy saving.

[0008] The aforementioned tapered hole punching device for piston pin production has a through hole for the base plate on the side of the punching box near the bottom. The sliding base plate slides within the through hole, and limit strips are integrally installed at both ends of the sliding base plate. The limit strips not only prevent the sliding base plate from sliding out of the through hole, but also ensure the accurate positioning of the punching hole after it enters the punching box.

[0009] The aforementioned tapered hole punching device for piston pin production includes an inner groove located on the upper surface of the sliding base near both ends. A protruding beam integral with the sliding base is fixedly installed on the lower surface of the inner groove. A punching hole is located on the upper surface of the protruding beam, and a tapered head is coaxially fixedly installed at the bottom end of the punching hole. The transverse sliding plate consists of sliding plate ribs matching the inner groove and sliding plate through holes matching the protruding beam. The height of the transverse sliding plate is equal to the height of the inner groove. By making the height of the transverse sliding plate equal to the height of the inner groove, the transverse sliding plate will not affect the sliding of the sliding base within the base through holes when it is located within the inner groove.

[0010] The aforementioned tapered hole punching device for piston pin production includes symmetrically arranged inner pull holes on both sides of the through hole of the sliding plate, matching the punching hole. The extrusion rod is rotatably mounted inside the inner pull holes via a second spring. A branch hole is provided in the middle of the sliding plate rib. The inner end of the inner pull hole is connected to the branch hole through a small through hole. A collection hole is provided inside the transverse sliding plate near its outer end. One end of the branch hole is connected to the collection hole. A branch pull rope is slidably installed inside the branch hole. The inner end of the extrusion rod is connected to the branch pull rope through a small pull rope. The small pull rope passes through the small through hole, and one end of each branch pull rope extends into the converging hole. By installing the extrusion rod in the inner pull hole through the second spring, the extrusion rod will not affect the retraction of the transverse slide into the recessed groove. By opening a branch hole in the middle of the slide rib and sliding the branch pull rope connected to the inner end of the extrusion rod in the branch hole, the operator can control multiple extrusion rods simultaneously by simply pulling the branch pull rope. By gathering the ends of multiple branch pull ropes in the converging hole, it is convenient to control multiple branch pull ropes simultaneously, which facilitates operation.

[0011] The aforementioned tapered hole stamping device for piston pin production includes a control mechanism comprising a vertical slide plate and a slide plate insertion hole. The vertical slide plate is fixedly installed on the lower surface of the outer end of the horizontal slide plate and is perpendicular to the horizontal slide plate. The slide plate insertion hole is located at the bottom of the outer end of the recessed groove. The vertical slide plate slides within the slide plate insertion hole. A first spring is fixedly installed at the bottom of the vertical slide plate. The slide plate insertion hole is connected to the outside through a movable through hole. A handle is fixedly installed on the outer surface of the vertical slide plate near the bottom. The handle extends through the movable through hole to the outside of the sliding base. When the sliding base slides and moves the horizontal slide plate out of the stamping box, the vertical slide plate will lift the horizontal slide plate under the action of the first spring, facilitating subsequent head-changing operations.

[0012] The aforementioned tapered hole punching device for piston pin production includes a main pull rope hole inside the vertical slide plate. The top of the main pull rope hole is connected to the collection hole. A main pull rope is installed inside the main pull rope hole. One end of each of the multiple branch pull ropes is connected to one end of the main pull rope. The handle also has a main pull rope hole inside, which is connected to the main pull rope hole inside the vertical slide plate. The bottom end of the main pull rope extends into the main pull rope hole inside the handle. By connecting one end of each of the multiple branch pull ropes to the main pull rope and extending the bottom end of the main pull rope into the handle, it is convenient for the operator to operate multiple branch pull ropes simultaneously.

[0013] The aforementioned tapered hole punching device for piston pin production includes a control slide cavity inside the handle. One end of the control slide cavity is connected to the main pull rope hole. A control slider is slidably installed inside the control slide cavity. The bottom end of the main pull rope is connected to one end of the control slider. The control slide cavity is connected to the outside through a control through hole.

[0014] The aforementioned tapered hole punching device for piston pin production includes a control slider with an internal retraction cavity. One end of the internal retraction cavity near the control through-hole is open. A compensation slider is slidably mounted inside the internal retraction cavity via a third spring. A control rod is fixedly mounted at the middle position of the compensation slider near the control through-hole, extending through the control through-hole to the outside of the handle. A locking groove is formed on the control slider cavity near the control through-hole, and a matching lock is fixedly mounted on the control slider near the control through-hole. The locking tooth block of the fixed tooth groove; by setting the locking tooth block on the sliding compensation slider and setting the matching locking tooth groove on one side of the control slide cavity, after the main pull rope is pulled by sliding the control slider, the extrusion rod is pulled into the inner pull hole through the branch pull rope. The locking tooth groove and the locking tooth block cooperate to prevent the extrusion rod from popping out, which makes it easy to put the transverse slide into the inner recess. After the piston pin is pushed out after being extruded at one end, the compensation slider is pressed down by the control rod to disengage the locking tooth groove and the locking tooth block. Under the action of the second spring, the extrusion rod can pop out to clamp the piston pin.

[0015] The aforementioned conical hole punching device for piston pin production includes an ejection mechanism comprising a movable cavity located below the punching hole. The movable cavity is connected to the punching hole via a through-hole located outside the conical head. A drive plate is slidably mounted inside the movable cavity. A push rod is fixedly mounted on the upper surface of the drive plate, with its tip extending through the through-hole into the punching hole. An electric telescopic rod is fixedly mounted at the center of the lower part of the movable cavity. The telescopic end of the electric telescopic rod extends into the movable cavity and is fixedly connected to the center of the lower surface of the drive plate. When the lower surface of the drive plate contacts the bottom of the movable cavity, the tip of the push rod is flush with the bottom of the punching hole. After one end of the piston pin is successfully punched, the electric telescopic rod is activated, ejecting the piston pin. When the tip of the drive plate contacts the upper surface of the movable cavity, and the vertical slide plate has also lifted the horizontal slide plate, the extrusion rod extends and abuts against the center of the piston pin.

[0016] The aforementioned tapered hole punching device for piston pin production includes a punching mechanism comprising a punching plate, which is mounted on the top of the punching box via a hydraulic telescopic rod. A punching rod matching the punching hole is fixedly mounted on the bottom of the punching plate. A first button and a second button are provided at the end of the sliding base. The first button is electrically connected to the hydraulic telescopic rod, and the second button is electrically connected to the electric telescopic rod.

[0017] The beneficial effects of this invention are as follows:

[0018] 1. The present invention provides a first stamping area and a second stamping area near both ends on the upper surface of the sliding chassis. This allows the two stamping areas to alternately enter the stamping box for work, while the stamping area left outside can be used by the operator for loading, unloading, and changing heads, enabling the device to operate continuously and improving work efficiency.

[0019] 2. This invention uses a transverse sliding plate that slides in an inner groove and a pressing rod on the inner side of the transverse sliding plate. After one end of the piston pin is pressed, the ejector mechanism ejects the piston pin. Then, the pressing rod is controlled by the control mechanism to press the side of the piston pin. Due to the weight difference between the two ends of the piston pin, the unpunched end will rotate downward around the pressing rod, achieving the effect of changing the head. Then, the piston pin is put down to complete the head change. The whole process is simple to operate and does not use external power or other energy, thus achieving the effect of energy saving.

[0020] 3. This invention installs the extrusion rod in the inner pull hole via a second spring, ensuring that the extrusion rod does not interfere with the retraction of the transverse slide into the recessed groove. By opening a branch hole in the middle of the slide rib and sliding a branch pull rope connected to the inner end of the extrusion rod within the branch hole, the operator can control multiple extrusion rods simultaneously by simply pulling the branch pull rope. By gathering the ends of multiple branch pull ropes in the convergence hole, it is convenient to control multiple branch pull ropes simultaneously, making operation easier.

[0021] 4. This invention sets a locking tooth block on a sliding compensation slider and a matching locking tooth groove on one side of the control slide cavity. When the main pull rope is pulled by sliding the control slider, the extrusion rod is pulled into the inner pull hole through the branch pull rope. The locking tooth groove and the locking tooth block cooperate to prevent the extrusion rod from popping out, making it easy to put the transverse slide into the inner recess. After the piston pin is pushed out after being extruded at one end, the compensation slider is pressed down by the control rod, so that the locking tooth groove and the locking tooth block are disengaged. Under the action of the second spring, the extrusion rod can pop out to clamp the piston pin. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the sliding chassis structure of the present invention;

[0024] Figure 3 This is a schematic diagram of the horizontal and vertical sliding plate structures of the present invention;

[0025] Figure 4 This is a schematic cross-sectional view of the transverse sliding plate structure of the present invention;

[0026] Figure 5 For the present invention Figure 4 Enlarged structural diagram at point A in the middle;

[0027] Figure 6 For the present invention Figure 4 Enlarged structural diagram at point B;

[0028] Figure 7 This is a schematic cross-sectional view of the vertical sliding plate structure of the present invention;

[0029] Figure 8 For the present invention Figure 7 Enlarged structural diagram at point C;

[0030] Figure 9 This is a schematic cross-sectional view of the sliding chassis structure of the present invention;

[0031] Figure 10 This is a schematic diagram of the stamping mechanism of the present invention.

[0032] In the picture:

[0033] 1. Stamping box; 2. Sliding base; 3. First stamping area; 4. Second stamping area; 5. Inner groove; 6. Stamping hole; 7. Horizontal slide plate; 8. Extrusion rotating rod; 9. Base perforation; 10. Limiting strip; 11. Protruding beam; 12. Conical head; 13. Slide plate rib; 14. Slide plate perforation; 15. Inner pull hole; 16. Second spring; 17. Branch hole; 18. Small through hole; 19. Converging hole; 20. Branch pull rope; 21. Small pull rope; 22. Vertical slide plate; 23. Slide plate insertion hole; 24. First spring; 5. Movable perforation; 26. Handle; 27. Main pull rope hole; 28. Main pull rope; 29. ​​Control slide cavity; 30. Control slider; 31. Control perforation; 32. Inner retraction cavity; 33. Third spring; 34. Compensation slider; 35. Control rod; 36. Locking tooth groove; 37. Locking tooth block; 38. Movable cavity; 39. Pushing perforation; 40. Drive plate; 41. Pushing rod; 42. Electric telescopic rod; 43. Stamping plate; 44. Hydraulic telescopic rod; 45. Stamping rod; 46. First button; 47. Second button. Detailed Implementation

[0034] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0035] like Figure 1-5 As shown in the figure, an embodiment of the present invention discloses a tapered hole stamping device for piston pin production, including a stamping box 1. A stamping mechanism is provided inside the stamping box 1 near the top. A sliding base 2 is slidably mounted through the stamping box 1 near the bottom. A first stamping area 3 and a second stamping area 4 are respectively provided on the upper surface of the sliding base 2 near both ends. The first stamping area 3 and the second stamping area 4 have the same structure and are symmetrically arranged. The first stamping area 3 includes an indentation groove 5 and a stamping hole 6. The indentation groove 5 is located on the side of the stamping hole 6. A transverse slide plate 7 is slidably arranged inside the indentation groove 5. A pressing rod 8 is slidably mounted on the inner side of the transverse slide plate 7. A control mechanism is provided at one end of the transverse slide plate 7 and is connected to the pressing rod 8. An ejection mechanism is provided at the bottom of the stamping hole 6. The device is constructed by pressing the upper surface of the sliding base 2. The first stamping zone 3 and the second stamping zone 4 are respectively set near the two ends of the device. The two stamping zones can alternately enter the stamping box 1 for work, while the stamping zone left outside can be used by the operator for loading, unloading and changing heads, so that the device can operate continuously and improve work efficiency. A transverse slide plate 7 is slidably set in the recessed groove 5, and a pressing rod 8 is set on the inner side of the transverse slide plate 7. After one end of the piston pin is pressed, the ejection mechanism pushes the piston pin out. Then, the control mechanism controls the pressing rod 8 to press the side of the piston pin. Due to the weight difference between the two ends of the piston pin, the unpunched end will rotate downward around the pressing rod 8, which achieves the effect of changing heads. Then, the piston pin is put down to complete the head changing. The whole process is simple to operate and does not use external power or other energy, which achieves the effect of energy saving.

[0036] like Figure 1 and Figure 10 As shown, a chassis through hole 9 is provided on the side of the stamping box 1 near the bottom. The sliding chassis 2 slides in the chassis through hole 9. Limiting strips 10 are integrally installed at both ends of the sliding chassis 2. The limiting strips 10 can not only prevent the sliding chassis 2 from sliding out of the chassis through hole 9, but also ensure the accurate position of the stamping hole 6 after entering the stamping box 1.

[0037] like Figure 2-3 and Figure 9As shown, the recessed groove 5 is opened on the upper surface of the sliding base 2 near both ends. The lower surface of the recessed groove 5 is fixedly installed with a protruding beam 11 integral with the sliding base 2. The stamping hole 6 is opened on the upper surface of the protruding beam 11. The bottom end of the stamping hole 6 is coaxially fixedly installed with a conical head 12. The transverse slide plate 7 is composed of a slide plate rib 13 matching the recessed groove 5 and a slide plate through hole 14 matching the protruding beam 11. The height of the transverse slide plate 7 is equal to the height of the recessed groove 5. By making the height of the transverse slide plate 7 equal to the height of the recessed groove 5, the transverse slide plate 7 will not affect the sliding of the sliding base 2 in the base plate through hole 9 when it is located in the recessed groove 5.

[0038] like Figure 3-6 As shown, symmetrical inner pull holes 15 matching the stamping holes 6 are provided on both sides of the slide plate through hole 14. The extrusion rod 8 is rotatably installed inside the inner pull hole 15 via the second spring 16. A branch hole 17 is provided in the middle of the slide plate rib 13. The inner end of the inner pull hole 15 is connected to the branch hole 17 through a small through hole 18. A collection hole 19 is provided inside the transverse slide plate 7 near the outer end. One end of the branch hole 17 is connected to the collection hole 19. A branch pull rope 20 is slidably installed inside the branch hole 17. The inner end of the extrusion rod 8 is connected to the branch pull rope 20 through a small pull rope 21. The small pull rope 21 is set through the small through hole 18. One end of each branch pull rope 20 extends into the collection hole 19. By installing the extrusion rod 8 in the inner pull hole 15 through the second spring 16, the extrusion rod 8 will not affect the retraction of the transverse slide plate 7 into the recessed groove 5. By opening a branch hole 17 in the middle of the slide plate rib 13, and sliding the branch pull rope 20 connected to the inner end of the extrusion rod 8 in the branch hole 17, the operator can control multiple extrusion rods 8 at the same time by simply pulling the branch pull rope 20. By gathering the ends of multiple branch pull ropes 20 in the collection hole 19, it is convenient to control multiple branch pull ropes 20 at the same time, which is convenient for operation.

[0039] like Figure 1-3 and Figure 9 As shown, the control mechanism includes a vertical slide plate 22 and a slide plate insertion hole 23. The vertical slide plate 22 is fixedly installed on the lower surface of the outer end of the horizontal slide plate 7 and is perpendicular to the horizontal slide plate 7. The slide plate insertion hole 23 is opened at the bottom of the outer end of the recessed groove 5. The vertical slide plate 22 slides in the slide plate insertion hole 23. A first spring 24 is fixedly installed at the bottom of the vertical slide plate 22. The slide plate insertion hole 23 is connected to the outside through a movable through hole 25. A handle 26 is fixedly installed on the outer surface of the vertical slide plate 22 near the bottom. The handle 26 extends through the movable through hole 25 to the outside of the sliding base 2. When the sliding base 2 slides and moves the horizontal slide plate 7 out of the stamping box 1, the vertical slide plate 22 will lift the horizontal slide plate 7 under the action of the first spring 24, which facilitates the subsequent head-changing operation.

[0040] like Figure 6-8As shown, the vertical slide plate 22 has a main pull rope hole 27 inside, the top of the main pull rope hole 27 is connected to the collection hole 19, and a main pull rope 28 is provided inside the main pull rope hole 27. One end of each of the multiple branch pull ropes 20 is connected to one end of the main pull rope 28. The handle 26 also has a main pull rope hole 27 inside, and the main pull rope hole 27 in the handle 26 is connected to the main pull rope hole 27 in the vertical slide plate 22. The bottom end of the main pull rope 28 extends into the main pull rope hole 27 in the handle 26. By connecting one end of each of the multiple branch pull ropes 20 to the main pull rope 28 and extending the bottom end of the main pull rope 28 into the handle 26, it is convenient for the operator to operate multiple branch pull ropes 20 at the same time.

[0041] like Figure 8 As shown, a control slide cavity 29 is provided inside the handle 26. One end of the control slide cavity 29 is connected to the main pull rope hole 27. A control slider 30 is slidably installed inside the control slide cavity 29. The bottom end of the main pull rope 28 is connected to one end of the control slider 30. The control slide cavity 29 is connected to the outside through the control through hole 31.

[0042] like Figure 8 As shown, the control slider 30 has an internal cavity 32. The end of the internal cavity 32 near the control through hole 31 is open. A compensation slider 34 is slidably mounted inside the internal cavity 32 via a third spring 33. A control rod 35 is fixedly mounted at the middle position of the compensation slider 34 near the control through hole 31. The control rod 35 extends through the control through hole 31 to the outside of the handle 26. A locking groove 36 is provided on the side of the control slide cavity 29 near the control through hole 31. A locking tooth block 37 matching the locking groove 36 is fixedly mounted on the side of the control slider 30 near the control through hole 31. Through the slidable compensation… The slider 34 is equipped with a locking tooth block 37, and a matching locking tooth groove 36 is provided on one side of the control slide cavity 29. After the main pull rope 28 is pulled by sliding the control slider 30, the extrusion rod 8 is pulled into the inner pull hole 15 through the branch pull rope 20. The locking tooth groove 36 and the locking tooth block 37 cooperate to prevent the extrusion rod 8 from popping out, making it easier to put the transverse slide plate 7 into the inner recess 5. After the piston pin is pushed out after being extruded at one end, the compensation slider 34 is pressed down by the control rod 35, so that the locking tooth groove 36 and the locking tooth block 37 are disengaged. Under the action of the second spring 16, the extrusion rod 8 can pop out to clamp the piston pin.

[0043] like Figure 9As shown, the ejection mechanism includes a movable cavity 38, which is located below the punching hole 6. The movable cavity 38 is connected to the punching hole 6 through a push-through hole 39, which is located on the outside of the conical head 12. A drive plate 40 is slidably installed inside the movable cavity 38. A push-rod 41 is fixedly installed on the upper surface of the drive plate 40. The top end of the push-rod 41 passes through the push-through hole 39 and extends into the punching hole 6. An electric telescopic rod 42 is fixedly installed at the middle position below the movable cavity 38. The telescopic rod 42 extends and retracts... The end extends into the interior of the movable cavity 38 and is fixedly connected to the middle position of the lower surface of the drive plate 40. When the lower surface of the drive plate 40 contacts the bottom of the movable cavity 38, the top end of the push rod 41 is flush with the bottom end of the punching hole 6. After one end of the piston pin is successfully punched, the electric telescopic rod 42 is activated to push out the piston pin. When the top end of the drive plate 40 contacts the upper surface of the movable cavity 38, and at this time the vertical slide plate 22 has also pushed up the horizontal slide plate 7, the extrusion rod 8 extends out and is just abutted against the middle position of the piston pin.

[0044] like Figure 1 and Figure 10 As shown, the stamping mechanism includes a stamping plate 43, which is mounted on the top of the stamping box 1 via a hydraulic telescopic rod 44. A stamping rod 45 matching the stamping hole 6 is fixedly mounted on the bottom of the stamping plate 43. A first button 46 and a second button 47 are provided at the end of the sliding base 2. The first button 46 is electrically connected to the hydraulic telescopic rod 44, and the second button 47 is electrically connected to the electric telescopic rod 42.

[0045] It should be noted that in the description of this invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0046] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0047] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0048] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A tapered hole punching device for piston pin production, characterized in that, The system includes a stamping box (1), a stamping mechanism is provided inside the stamping box (1) near the top, a sliding base (2) is slidably installed through the stamping box (1) near the bottom, a first stamping area (3) and a second stamping area (4) are respectively provided on the upper surface of the sliding base (2) near both ends, the first stamping area (3) and the second stamping area (4) have the same structure and are symmetrically arranged, the first stamping area (3) includes an inner groove (5) and a stamping hole (6), the inner groove (5) is located on the side of the stamping hole (6), a transverse slide plate (7) is slidably arranged inside the inner groove (5), an extrusion rod (8) is slidably installed on the inner side of the transverse slide plate (7), a control mechanism is provided at one end of the transverse slide plate (7), the control mechanism is connected to the extrusion rod (8), and an ejection mechanism is provided at the bottom of the stamping hole (6). The side of the stamping box (1) near the bottom has a through hole (9) for the chassis. The sliding chassis (2) slides in the through hole (9). Limiting strips (10) are integrally installed at both ends of the sliding chassis (2). The recessed groove (5) is located on the upper surface of the sliding chassis (2) near both ends. A protruding beam (11) integral with the sliding chassis (2) is fixedly installed on the lower surface of the recessed groove (5). The stamping hole (6) is located on the upper surface of the protruding beam (11). A conical head (12) is coaxially fixedly installed at the bottom end of the stamping hole (6). The transverse sliding plate (7) is composed of a sliding plate rib (13) matching the recessed groove (5) and a sliding plate through hole (14) matching the protruding beam (11). The height of the transverse sliding plate (7) is equal to the height of the recessed groove (5). The two sides of the through hole (14) of the slide plate are symmetrically provided with inner pull holes (15) matching the stamping hole (6). The extrusion rod (8) is rotatably installed inside the inner pull hole (15) by the second spring (16). The middle position of the slide plate rib (13) is provided with a branch hole (17). The inner end of the inner pull hole (15) is connected to the branch hole (17) through a small through hole (18). The inner side of the transverse slide plate (7) near the outer end is provided with a collection hole (19). One end of the branch hole (17) is connected to the collection hole (19). A branch pull rope (20) is slidably installed inside the branch hole (17). The inner end of the extrusion rod (8) is connected to the branch pull rope (20) through a small pull rope (21). The small pull rope (21) is set through the small through hole (18). One end of the branch pull rope (20) extends into the collection hole (19). The control mechanism includes a vertical slide plate (22) and a slide plate insertion hole (23). The vertical slide plate (22) is fixedly installed on the lower surface of the outer end of the horizontal slide plate (7). The vertical slide plate (22) is perpendicular to the horizontal slide plate (7). The slide plate insertion hole (23) is opened at the bottom of the outer end of the recessed groove (5). The vertical slide plate (22) slides in the slide plate insertion hole (23). A first spring (24) is fixedly installed at the bottom of the vertical slide plate (22). The slide plate insertion hole (23) is connected to the outside through a movable through hole (25). A handle (26) is fixedly installed on the outer surface of the vertical slide plate (22) near the bottom. The handle (26) extends through the movable through hole (25) to the outside of the sliding base (2). The vertical slide plate (22) has a main pull rope hole (27) inside. The top of the main pull rope hole (27) is connected to the collection hole (19). The main pull rope (28) is provided inside the main pull rope hole (27). One end of each of the multiple branch pull ropes (20) is connected to one end of the main pull rope (28). The handle (26) also has the main pull rope hole (27) inside. The main pull rope hole (27) in the handle (26) is connected to the main pull rope hole (27) in the vertical slide plate (22). The bottom end of the main pull rope (28) extends into the main pull rope hole (27) in the handle (26).

2. The tapered hole punching device for piston pin production according to claim 1, characterized in that, The handle (26) has a control slide cavity (29) inside. One end of the control slide cavity (29) is connected to the main pull rope hole (27). A control slider (30) is slidably installed inside the control slide cavity (29). The bottom end of the main pull rope (28) is connected to one end of the control slider (30). The control slide cavity (29) is connected to the outside through a control through hole (31).

3. The tapered hole punching device for piston pin production according to claim 2, characterized in that, The control slider (30) has an internal retraction cavity (32) inside. The end of the internal retraction cavity (32) near the control through hole (31) is a through end. A compensation slider (34) is slidably installed inside the internal retraction cavity (32) via a third spring (33). A control rod (35) is fixedly installed at the middle position on the side of the compensation slider (34) near the control through hole (31). The control rod (35) extends out of the handle (26) through the control through hole (31). A locking tooth groove (36) is opened on the side of the control slide cavity (29) near the control through hole (31). A locking tooth block (37) matching the locking tooth groove (36) is fixedly installed on the side of the control slider (30) near the control through hole (31).

4. The tapered hole punching device for piston pin production according to claim 3, characterized in that, The ejection mechanism includes a movable cavity (38) located below the punching hole (6). The movable cavity (38) is connected to the punching hole (6) via a push-through hole (39) located outside the conical head (12). A drive plate (40) is slidably mounted inside the movable cavity (38). A push-rod (41) is fixedly mounted on the upper surface of the drive plate (40), and the top end of the push-rod (41) passes through the punching hole (6). The abutment through hole (39) extends into the stamping hole (6). An electric telescopic rod (42) is fixedly installed at the middle position below the movable cavity (38). The telescopic end of the electric telescopic rod (42) extends into the interior of the movable cavity (38) and is fixedly connected to the middle position of the lower surface of the drive plate (40). When the lower surface of the drive plate (40) contacts the bottom of the movable cavity (38), the top end of the abutment rod (41) is flush with the bottom end of the stamping hole (6).

5. The tapered hole punching device for piston pin production according to claim 4, characterized in that, The stamping mechanism includes a stamping plate (43), which is mounted on the top of the stamping box (1) via a hydraulic telescopic rod (44). A stamping rod (45) matching the stamping hole (6) is fixedly mounted on the bottom of the stamping plate (43). A first button (46) and a second button (47) are provided at the end of the sliding chassis (2). The first button (46) is electrically connected to the hydraulic telescopic rod (44), and the second button (47) is electrically connected to the electric telescopic rod (42).

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