Stamping die with replaceable stamping head

Abstract

The stamping die with the replaceable stamping head comprises the stamping head and a clamping plate used for installing the stamping head, the clamping plate is installed below a base plate, a middle body bolt is fixed in a groove formed in the lower end face of the clamping plate, and a first clamping block and a second clamping block are further arranged on the inner wall of a column groove. The two clamping blocks are horizontally connected to the middle body in a sliding mode in a one-to-one mode, the first clamping block is used for being clamped in a groove in the surface of a cylinder of a punch, the second clamping block is used for being cushioned on the top wall of the punch or abutting against the lower end face of a hanging table at the top end of the punch, and the two clamping blocks are driven by a pressing device to move and stretch out of the interior of the middle body in a sliding mode. According to the stamping die with the replaceable stamping head, the stamping head mounting structure is redesigned, the same power system can be used for achieving traction, limiting and fixing of the stamping head, a user can conveniently disassemble and replace the stamping head under the condition that a clamping plate and a base plate are not disassembled, meanwhile, the stamping die with the replaceable stamping head is suitable for more types of stamping heads, and use is quite convenient.

Description

Technical Field

[0001] The invention relates to the technical field of stamping dies, in particular to a stamping die with a replaceable stamping head. Background Art

[0002] The punch heads in the stamping die can be roughly divided into A-type punches and T-type punches according to their appearance. According to the fixing method, they can be roughly divided into punches fixed by a hanging table, fixed by a pressure block, and fixed by a plug, as well as some self-locking special-shaped punches with a narrower application range. The movable part of the die is generally divided into two parts: a pad and a clamp. The clamp is the main installation structure of the general punch, and the pad is fixed to the punch by fitting with the clamp or other connection methods. Therefore, the existing stamping dies still have the following problems in actual use: Since the punch has many forms, when replacing it, it is also necessary to replace the specific mounting structure. The most commonly used types are A-type or T-type punches with a protrusion on the top and hanging inside the groove in the splint, and the block-fixed punches that match the block on the splint through the middle groove. However, the existing splint and the matching pad structure cannot adaptively replace and fix the above-mentioned types of punches, and the actual operation is rather troublesome. Summary of the invention

[0003] The object of the present invention is to provide a stamping die with a replaceable stamping head, so as to solve the problem mentioned in the above background technology that since the punch has various forms, when replacing it, it is also necessary to replace a specific mounting structure. The most commonly used types are A-type or T-type punches with a protrusion on the top and hung inside the groove in the clamp, and a block-fixed punch that matches the block on the clamp through the middle groove. However, the existing clamp and the matching pad structure cannot adaptively replace and fix the above-mentioned types of stamping heads, and the actual operation is relatively troublesome.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a punching die with a replaceable punch head, comprising a punch and a clamping plate for mounting the punch, the clamping plate being mounted below a backing plate, a fixed plate on which a lower die is mounted being below the punch, a guide column being mounted on the fixed plate, and an intermediate body, the intermediate body being bolted in a groove formed on the lower end surface of the clamping plate, and a column groove formed in the intermediate body being used for detachably mounting and connecting with the upper half of the punch; The inner wall of the column groove is also provided with a first clamping block and a second clamping block, and the two clamping blocks are horizontally slidably connected to the intermediate body, one below and one above. The first clamping block is used to engage in the groove on the cylindrical surface of the punch, and the second clamping block is used to pad the top wall of the punch or against the lower end surface of the hanging platform at the top of the punch, and the two clamping blocks are driven to move by a pressing device and slide out from the inside of the intermediate body.

[0005] Furthermore, the pressing device includes a cross bar and a guide block, and a pressing device is arranged on each side of the block. The upper half of the right side wall of the guide block is an arc structure, and the lower half is a vertical plane structure tangent to the arc line. The cross bar is slidably connected to the inner wall of the intermediate body through a spring and the right end is fixedly connected to the block, and the left end is attached to the right side wall surface of the guide block. The guide block is vertically fixed on the right side wall of the push rod, and the bottom end of the push rod is connected to the driving device for driving the push rod to move up and down.

[0006] Furthermore, a suction plate is provided at the inner top of the column groove, and the top of the suction plate is connected to a pulling device. The pulling device is used to drive the suction plate to move from the inside of the column groove to the outside of the bottom when replacing the punch, and the suction plate is a permanent magnet or an electromagnet. At the same time, a receiving groove that matches the card block is opened on the lower end surface of the suction plate, and the receiving groove is used to enable the card block to enter the receiving groove when the pressure block type punching head is adsorbed.

[0007] Furthermore, the pulling device includes a reel, a winding shaft, and an elastic pull rope with one end wound around the reel, the other end of the pull rope slides through the guide cylinder inside the intermediate body and is fixed to the upper end surface of the suction plate, and the reel is connected to a transmission device, which is used to drive the reel to rotate.

[0008] As a further feature, the transmission device comprises a transverse shaft, the left end of which is connected to the rotator, and the middle section of which is connected to the bottom end of the reel via two mutually meshing bevel teeth.

[0009] Furthermore, the driving device includes a cam and a rotating shaft, the cam is vertically fixed on the middle section of the rotating shaft, the right end of the rotating shaft is damped and rotationally installed inside the intermediate body, and the left end is nested inside the transverse shaft, a stop block is fixed on the inner wall of the transverse shaft and the outer wall of the rotating shaft, and the edge of the cam is also fitted in the limit groove, and the limit groove horizontally penetrates the upper half of the limit plate fixed inside the intermediate body.

[0010] Furthermore, the rotator includes an outer shell and a worm wheel and a worm arranged inside the outer shell. The outer shell is arranged on the lower end face of the intermediate body, and the worm wheel is vertically fixed on the left end head of the horizontal axis. The horizontal axis rotates through the intermediate body and is rotatably mounted on the outer shell. The worm is engaged with the worm wheel from the bottom end, and a rotating cylinder rotatably mounted on the outer shell is fixed at the end head of the worm.

[0011] As a further feature, a hollow shaft is installed on the right end surface of the shell, the interior of the hollow shaft is penetrated by the transverse axis, and the right end of the hollow shaft is rotatably installed on the outer wall of the intermediate body.

[0012] Compared with the prior art, the invention has the following beneficial effects: the punching die of the replaceable punching head redesigns the punching head installation structure, and can use the same power system to respectively realize the traction and limit fixation of the punching head, so that the user can conveniently disassemble and replace the punching head without removing the clamping plate and the pad, and at the same time, it is suitable for more types of punching heads and is very convenient to use; 1. The structural design of the guide block, the push rod and the clamp block facilitates the limiting and fixing operation of the punch from the top and the inherent groove structure in the middle of the punch by extending the clamp blocks at different positions synchronously; 2. The use of the suction plate facilitates the operation of winding and releasing the line through the rotation of the reel, so that the suction plate located inside the column slot can be moved to the outside, which is convenient for the staff to determine the position of the column slot and realize the convenient positioning and insertion of the punch through the adsorption effect of the suction plate; Furthermore, the use of the horizontal axis can utilize its own rotation and the rotation of the bevel gear to realize the retraction and extension of the pull rope and the up and down movement control of the suction plate. On the other hand, it can also utilize its connection with the rotating shaft to make the horizontal axis rotate in the forward or reverse direction for a certain period of time and then drive the rotating shaft and the cam to rotate, thereby utilizing the rotation of a horizontal axis as a power to realize the up and down movement of the suction plate and the extension and retraction of the card block, which is very convenient to operate and saves a lot of operating space. Furthermore, the structural design of the shell and the hollow shaft allows the user to select the operating angle of the horizontal axis rotation operation by rotating the splint according to whether the splint is currently disassembled, and can adapt to the angle requirements under different usage directions. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a bottom view structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the internal structure of the column slot of the present invention; Figure 4 It is a schematic diagram of the cross-sectional structure of the upper half of the intermediate of the present invention; Figure 5 It is a schematic diagram of the cross-sectional structure of the lower half of the intermediate of the present invention; Figure 6 It is a schematic diagram of the cam structure of the present invention; Figure 7 It is a structural schematic diagram of the cam of the present invention before and after rotation; Figure 8 It is a schematic diagram of the cross-sectional structure of the housing of the present invention; Fig. 9 It is a schematic diagram of the block structure of the present invention.

[0014] In the figure: 1. punch; 2. clamping plate; 3. pad; 4. guide column; 5. fixed template; 6. lower die; 7. intermediate body; 8. column groove; 9. first clamping block; 10. second clamping block; 11. cross bar; 12. guide block; 13. push rod; 14. suction plate; 15. pull rope; 16. guide cylinder; 17. reel; 18. reel; 19. receiving groove; 20. cross axis; 21. rotating shaft; 22. cam; 23. limit plate; 24. limit groove; 25. bevel gear; 26. housing; 27. worm wheel; 28. worm; 29. ​​rotating cylinder; 30. hollow shaft; 31. stopper. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] See also Figure 1-9 , the present invention provides the following technical solutions: Example

[0017] In order to solve the problems existing in the prior art, this embodiment also discloses the following solutions, specifically: Figure 1-3 As shown, it includes a punch 1 and a clamping plate 2 for installing the punch, the clamping plate 2 is installed below the pad 3, and below the punch 1 is a fixed template 5 on which a lower die 6 is installed, and a guide column 4 is installed on the fixed template 5, and also includes an intermediate body 7, the intermediate body 7 is bolted to a groove provided in the lower end surface of the clamping plate 2, and a column groove 8 provided in the intermediate body 7 is used for detachable installation and connection with the upper half of the punch 1; the inner wall of the column groove 8 is also provided with a first clamping block 9 and a second clamping block 10, and the two clamping blocks are horizontally slidably connected to the intermediate body 7 one below and one above, the first clamping block 9 is used to be clamped in the groove on the column surface of the punch 1, and the second clamping block 10 is used to pad the top wall of the punch 1 or against the lower end surface of the top hanging platform of the punch 1, and the two clamping blocks are driven to move by a pressing device The punch 1 can be fixed by a hanging table or a pressing block. After the disassembly of the punch 1 is completed, the user can insert the punch 1 of the corresponding type into the column groove 8, and then use the pressing device to extend the two blocks. The first block 9 can adaptably fit in the groove structure opened on the side wall of the punch 1. When the punch 1 is a hanging table type punching head, the upper end face of the second block 10 can be fitted on the lower end face of the hanging table to ensure the stability of the installation. If the punch 1 is a pressing block fixed punching head, the lower end face of the second block 10 can be fitted on the top wall of the punch 1 to avoid the top force of the punch 1 directly acting on the intermediate body 7 during the stamping process, thereby achieving the purpose of installing and fixing punches 1 of various specifications.

[0018] This embodiment further discloses the following technical solution for pushing the card block to move, specifically: Figure 4 As shown, the pressing device includes a cross bar 11 and a guide block 12, and a pressing device is arranged on each side of each card block. The upper half of the right side wall of the guide block 12 is an arc structure, and the lower half is a vertical plane structure tangent to the arc line. The cross bar 11 is connected to the inner wall of the intermediate body 7 through a spring sliding connection, and the right end is fixedly connected to the card block, and the left end is attached to the right side wall surface of the guide block 12. The guide block 12 is vertically fixed on the right side wall of the push rod 13, and the bottom end of the push rod 13 is connected to the driving device for driving the push rod 13 to move up and down. After the punch 1 is embedded in the column groove 8, the driving device can drive the push rod 13 to move upward, and the push rod 13 synchronously drives the guide block 12 to move upward synchronously. Therefore, under the guidance of the arc structure on its surface, the cross bar 11 will drive the card block to move toward the right side, so that the two card blocks are moved to the corresponding positions respectively to complete the clamping and fixing of the punch 1. Example

[0019] In the prior art, in order to ensure that the punch 1 can better withstand the forces in multiple directions during the stamping process and prevent it from being easily deformed, it is necessary to make the upper half of the punch 1 nested in the clamping plate 2. However, when the diameter of the punch 1 is small, the corresponding hole structure is also small, and the opening direction of the hole is generally set vertically downward. In this way, it is difficult for the staff to complete the replacement of the punch 1 without disassembling the clamping plate 2, and the actual replacement efficiency is very low. Therefore, in order to solve this technical problem, the punch 1 can be conveniently inserted into the hole by the staff standing at the side to complete the positioning. The following scheme is also disclosed in this embodiment, specifically as follows Figure 4 As shown, a suction plate 14 is also provided at the inner top of the column groove 8, and the top of the suction plate 14 is connected to a pulling device. The pulling device is used to drive the suction plate 14 to move from the inside of the column groove 8 to the outside of the bottom when replacing the punch 1, and the suction plate 14 is a permanent magnet or an electromagnet. At the same time, a receiving groove 19 that matches the card block is opened on the lower end surface of the suction plate 14. The receiving groove 19 is used to allow the card block to enter the receiving groove 19 when the pressure block type punching head is adsorbed. When the punch 1 needs to be replaced, the suction plate 14 can be driven to move downward by the pulling device. After the suction plate 14 moves to the outside of the column groove 8, the staff can judge the position of the column groove 8 by the position of the suction plate 14 without removing the splint 2, and directly adsorb and fix the top of the punch 1 on the suction plate 14, and then retract the suction plate 14 into the column groove 8 by the pulling device, so as to complete the positioning and insertion of the punch 1.

[0020] The present embodiment also discloses the following scheme: a specific structural design for driving the suction plate 14 to move up and down, specifically: Figure 4-5As shown, the pulling device includes a reel 17, a reel 18 and an elastic pull rope 15 with one end wound around the reel 17, the other end of the pull rope 15 slides through the guide cylinder 16 inside the intermediate body 7 and is fixed to the upper end surface of the suction plate 14, and the reel 17 is connected to a transmission device, which is used to drive the reel 18 to rotate. The transmission device includes a transverse axis 20, the left end of the transverse axis 20 is connected to a rotator, and the middle section of the transverse axis 20 is connected to the bottom end of the reel 18 through two mutually meshing bevel teeth 25. When it is necessary to control the movement of the suction plate 14, the transverse axis 20 can be driven to rotate by the rotator. Under the transmission action of the two mutually meshing bevel teeth 25, the reel 18 will rotate synchronously and drive the reel 17 to rotate inside the intermediate body 7. At the same time, when the reel 17 is in a rotating state, the pull rope 15 will be synchronously in a relaxed or tightened state, so the suction plate 14 will be controlled to move up or down accordingly.

[0021] Since the space below the intermediate body 7 and the clamping plate 2 is limited in order to ensure the normal operation of the stamping work, in order to avoid excessive use of the space below the clamping plate 2, the present embodiment also discloses the following scheme, specifically, the movement of the push rod 13 and the rotation of the reel 18 share a power system, and can achieve non-interference with each other, specifically as follows: Figure 5-7 as well as Fig. 9As shown, the driving device includes a cam 22 and a rotating shaft 21. The cam 22 is vertically fixedly installed in the middle section of the rotating shaft 21. The right end of the rotating shaft 21 is installed in the middle body 7 for damping rotation, and the left end is nested in the inside of the horizontal shaft 20. A stopper 31 is fixed to the inner wall of the horizontal shaft 20 and the outer wall of the rotating shaft 21. The edge of the cam 22 also fits in the limiting groove 24. The limiting groove 24 horizontally penetrates the upper half of the limiting plate 23 fixed in the middle body 1. When the punch 1 needs to be moved When replacing, the user can first drive the horizontal shaft 20 to rotate through the rotator. During the rotation process, the horizontal shaft 20 will first drive the reel 18 to rotate and make the pull rope 15 accumulate on the upper part of the suction plate 14. At the same time, the stopper 31 on the horizontal shaft 20 will also rotate synchronously until it is in contact with the stopper 31 on the rotating shaft 21. At this time, the continued rotation of the horizontal shaft 20 will drive the rotating shaft 21 to rotate synchronously. After each block is retracted, the suction plate 14 will drive the old punch 1 to move downward and out of the column slot 8, and the new punch 1 will be replaced. After the replacement is completed, the user can use the rotator to rotate the horizontal shaft 20 in the opposite direction again. At this time, the horizontal shaft 20 is still in a rotating state first and the suction plate 14 can drive the new punch 1 to enter the column groove 8 until the other surface of the two stoppers 31 is in contact, and the rotating shaft 21 will rotate in the opposite direction accordingly, so that the rotation of the rotating shaft 21 drives the cam 22 to rotate, and the structural guidance of the surface of the cam 22 and the spring on the push rod 13 are used to drive the push rod 13 to rise and fall. Because the pull rope 15 itself is made of elastic material, when the suction plate 14 moves to the initial position, the continued rotation of the horizontal shaft 20 drives the rotation of the rotating shaft 21, which will cause the pull rope 15 to deform elastically accordingly, so as to avoid the horizontal shaft 20 and the rotating shaft 21 being unable to rotate further after the suction plate 14 moves to the limit position due to the fixed length of the pull rope 15. The setting of the limit plate 23 and the limit groove 24 is to ensure that the cam 22 can only rotate from the horizontal to a vertical state slightly greater than 90°, or from the obtuse angle state to the horizontal state under the guidance of the limit groove 24.

[0022] As mentioned above, when the splint 2 is not disassembled, the operating space below it is relatively limited, including the rotation operation of the horizontal axis 20 is also very troublesome. However, if the alignment direction of its operating structure is directly deflected toward the staff side, it will cause the splint 2 to be inconvenient to operate when it has been disassembled. Therefore, in order to solve this problem, the following solution is disclosed in this embodiment, specifically as follows: Figure 8As shown, the rotator includes a housing 26 and a worm wheel 27 and a worm 28 arranged inside the housing 26. The housing 26 is arranged on the lower end surface of the intermediate body 7, and the worm wheel 27 is vertically fixed to the left end of the horizontal shaft 20. The horizontal shaft 20 rotates through the intermediate body 7 and is rotatably mounted on the housing 26. The worm 28 engages with the worm wheel 27 from the bottom end thereof, and a rotating drum 29 rotatably mounted on the housing 26 is fixed to the end of the worm 28. A hollow shaft 30 is installed on the right end surface of the housing 26. The interior of the hollow shaft 30 is penetrated by the horizontal shaft 20, and the right end of the hollow shaft 30 is rotatably mounted on the outer wall of the intermediate body 7. When removing the splint 2, the staff can use a long screwdriver or other existing tools to insert into the interior of the rotating drum 29, and drive the horizontal axis 20 to rotate through the rotating drum 29 and the mutually meshing worm gear 28 and worm 27. Similarly, when the splint 2 is in a disassembled state, that is, when the staff is performing batch replacement and disassembly of the punching heads under the splint 2, the user can rotate the outer shell 26 as a whole on the side wall of the intermediate body 7 through the hollow shaft 30. During this period, the horizontal axis 20 will rotate accordingly. Therefore, after the outer shell 26 rotates, the staff only needs to rotate it slightly in the opposite direction to keep the device in its initial state, which is convenient for subsequent operations.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A punching die with a replaceable punch head, comprising a punch (1) and a clamping plate (2) for mounting the punch, wherein the clamping plate (2) is mounted below a backing plate (3), and below the punch (1) is a fixed die plate (5) on which a lower die (6) is mounted, and a guide column (4) is mounted on the fixed die plate (5), characterized in that: It also includes an intermediate body (7), wherein the intermediate body (7) is bolted into a groove formed on the lower end surface of the clamping plate (2), and a column groove (8) formed in the intermediate body (7) is used for being detachably connected to the upper half of the punch (1); The inner wall of the column groove (8) is also provided with a first clamping block (9) and a second clamping block (10), and the two clamping blocks are horizontally slidably connected to the intermediate body (7) one above the other, the first clamping block (9) being used to be engaged in the groove on the surface of the column of the punch (1), and the second clamping block (10) being used to cushion the top wall of the punch (1) or to abut against the lower end surface of the hanging platform at the top end of the punch (1), and the two clamping blocks are driven to move by a pressing device and slide out from the inside of the intermediate body (7).

2. The punching die of a replaceable punching head according to claim 1, characterized in that: The pressing device comprises a cross bar (11) and a guide block (12), and a pressing device is arranged on the side of each card block. The upper half of the right side wall of the guide block (12) is an arc structure, and the lower half is a vertical plane structure tangent to the arc line. The cross bar (11) is slidably connected to the inner wall of the intermediate body (7) through a spring, and the right end is fixedly connected to the card block, and the left end is attached to the right side wall surface of the guide block (12). The guide block (12) is vertically fixed on the right side wall of the push rod (13), and the bottom end of the push rod (13) is connected to the driving device for driving the push rod (13) to move up and down.

3. The punching die of a replaceable punching head according to claim 2, characterized in that: A suction plate (14) is also provided at the top end of the column slot (8). The top end of the suction plate (14) is connected to a pulling device. The pulling device is used to drive the suction plate (14) to move from the inside of the column slot (8) to the outside of the bottom end when the punch (1) is replaced. The suction plate (14) is a permanent magnet or an electromagnet. At the same time, a receiving groove (19) that matches the card block is formed on the lower end surface of the suction plate (14). The receiving groove (19) is used to allow the card block to enter the receiving groove (19) when the block-type punching head is adsorbed.

4. The punching die of a replaceable punching head according to claim 3, characterized in that: The pulling device comprises a reel (17), a reel (18), and an elastic pull rope (15) with one end wound around the reel (17); the other end of the pull rope (15) slides through a guide cylinder (16) inside the intermediate body (7) and is fixed to the upper end surface of the suction plate (14); and the reel (17) is connected to a transmission device, which is used to drive the reel (18) to rotate.

5. The punching die of a replaceable punching head according to claim 4, characterized in that: The transmission device comprises a transverse shaft (20), the left end of which is connected to the rotator, and the middle section of the transverse shaft (20) is connected to the bottom end of the reel (18) via two mutually meshing bevel teeth (25).

6. The punching die of a replaceable punching head according to claim 5, characterized in that: The driving device comprises a cam (22) and a rotating shaft (21), wherein the cam (22) is vertically fixedly mounted on the middle section of the rotating shaft (21), the right end of the rotating shaft (21) is mounted in a damped rotation manner inside the intermediate body (7), and the left end is nested inside the transverse shaft (20), a stopper (31) is fixed to the inner wall of the transverse shaft (20) and the outer wall of the rotating shaft (21), and the edge of the cam (22) is also fitted in a limiting groove (24), and the limiting groove (24) horizontally penetrates the upper half of a limiting plate (23) fixed inside the intermediate body (1).

7. The punching die of a replaceable punching head according to claim 6, characterized in that: The rotator comprises a housing (26) and a worm wheel (27) and a worm (28) arranged inside the housing (26). The housing (26) is arranged on the lower end surface of the intermediate body (7), and the worm wheel (27) is vertically fixed on the left end of the transverse shaft (20). The transverse shaft (20) rotates through the intermediate body (7) and is rotatably mounted on the housing (26). The worm (28) meshes with the worm wheel (27) from the bottom end thereof, and a rotating drum (29) rotatably mounted on the housing (26) is fixed at the end of the worm wheel (28).

8. The punching die of a replaceable punching head according to claim 7, characterized in that: A hollow shaft (30) is mounted on the right end surface of the housing (26). The interior of the hollow shaft (30) is penetrated by the transverse shaft (20), and the right end of the hollow shaft (30) is rotatably mounted on the outer wall of the intermediate body (7).

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