Stamping die with punch convenient to replace

Abstract

The utility model relates to the technical field of stamping dies, in particular to a stamping die with a punch convenient to replace, which comprises a lower die holder, a stamping die core, a plurality of guide posts, an upper die holder and the punch. The quick release structure comprises a mounting hole concavely formed in the bottom face of the upper die base, a via hole formed in the top of the punch, a first inserting hole concavely formed in one side wall of the upper die base, a second inserting hole concavely formed in one side wall of the mounting hole, and an inserting rod detachably inserted into the first inserting hole, the via hole and the second inserting hole. The handle is fixedly connected to the outer end of the inserting rod and used for abutting against the outer side wall of the upper die base, and the locking piece is movably arranged on the outer side wall of the upper die base and used for locking or unlocking the handle. When the top of the punch is mounted in the mounting hole, the first insertion hole, the via hole and the second insertion hole are coaxially communicated. The structure is simple, the punch is convenient and fast to disassemble and assemble, punches of different structures can be replaced according to the forming requirements of different workpieces, universality is good, and practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping dies, in particular to a stamping die convenient for replacing a punch head. Background Art

[0002] When processing metal workpieces, stamping dies are often used. The punch head is installed on the stamping die to perform continuous blanking, punching, and shearing operations, so that the processed material is separated or plastically deformed, thereby obtaining the required finished or semi-finished products.

[0003] The existing stamping die punch head is installed by passing bolts through the mounting holes on the surfaces of the upper die and the punch head, and then cooperating with nuts for fixation. Although the installation is firm, during the long-term stamping process, the surface of the punch head is prone to damage. Operators need to use auxiliary tools (such as screwdrivers) to disassemble the bolts in order to replace the punch head, and problems such as bolt rust or slipping may occur during the disassembly of the bolts, resulting in inconvenience and time-consuming for operators during the disassembly and assembly of the punch head.

[0004] In the existing patent, the Chinese patent document with the application number 202022930195.3 discloses a stamping die for a built-in fixing part of a display that can quickly replace a punch head, including an upper die, a fixing part, a punch head, and a middle die; the fixing part includes a left half and a right half, a fixing cavity is opened between the left half and the right half, the top of the left half is fixedly connected to the bottom end of the upper die, a plug pin is fixedly connected to the left half, a pin hole corresponding to the plug pin is opened on the right half, and the plug pin is inserted into the pin hole; a connecting part is provided at the top of the punch head, and the connecting part is embedded in the fixing cavity between the left half and the right half of the fixing part; a guide post is provided at the top of the middle die, a guide hole corresponding to the guide post is opened on the upper die, the guide post is slidably connected in the guide hole, a spring is sleeved outside the guide post, one end of the spring is fixedly connected to the middle die, and the other end is fixedly connected to the upper die. A limit groove with the same shape as the fixing part is opened on the middle die, and the limit groove is located below the fixing part. When the punch head needs to be replaced in this patent document, only by separating the left half and the right half from each other can the punch head be conveniently taken out and replaced; although it is convenient to replace the punch head, a middle die needs to be set, and a limit groove needs to be set on the middle die. During the stamping process, the fixing part needs to be embedded in the limit groove to ensure that the fixing part (the left half and the right half) does not separate during the stamping process, that is, the fixing part is prone to looseness and the stability is poor.

[0005] Therefore, the defects are very obvious and a solution is urgently needed. Summary of the Utility Model

[0006] In order to solve the above technical problems, the purpose of the utility model is to provide a stamping die convenient for replacing a punch head.

[0007] To achieve the above object, the utility model adopts the following technical solutions:

[0008] A stamping die facilitating the replacement of a punch head, which comprises a lower die base, a stamping die core arranged on the top surface of the lower die base, a plurality of guide posts arranged on the lower die base, an upper die base slidably connected to the plurality of guide posts and arranged above the stamping die core in a lifting manner, and a punch head detachably arranged on the bottom surface of the upper die base. The punch head is arranged on the upper die base via a quick-release structure. The quick-release structure comprises a mounting hole recessed in the bottom surface of the upper die base, a through hole arranged at the top of the punch head, a first jack recessed from a side wall of the upper die base and communicated with the mounting hole, a second jack recessed from a side wall of the mounting hole and coaxially arranged with the first jack, a plug rod capable of being detachably inserted into the first jack, the through hole and the second jack, a handle fixedly connected to the outer end of the plug rod and used for abutting against the outer side wall of the upper die base, and a locking member movably arranged on the outer side wall of the upper die base and used for locking or unlocking the handle; when the top of the punch head is arranged in the mounting hole, the first jack, the through hole and the second jack are coaxially communicated.

[0009] Furthermore, a positioning post protrudes downward from the top wall of the mounting hole, and a positioning hole is recessed in the top surface of the punch head. The positioning post and the positioning hole are in concave-convex fit.

[0010] Furthermore, the locking member comprises a pin arranged on the outer side wall of the upper die base, an L-shaped rotating plate rotatably connected to one end of the pin, and a torsion spring sleeved outside the pin. One end of the torsion spring is fixedly connected to the upper die base, and the other end of the torsion spring is fixedly connected to the L-shaped rotating plate. The torsion spring is located between the L-shaped rotating plate and the upper die base, and the other end of the L-shaped rotating plate locks the handle on the upper die base under the elastic force of the torsion spring.

[0011] Furthermore, the handle is provided with a locking space; when the L-shaped rotating plate is located in the locking space, the L-shaped rotating plate locks the handle.

[0012] Furthermore, the number of the locking members is two, and the two locking members are symmetrically arranged on both sides of the handle.

[0013] Furthermore, the handle comprises a limiting plate fixedly connected to the plug rod and a pull handle vertically connected to the limiting plate. The pull handle is located on the side of the limiting plate away from the upper die base. The limiting plate is used for abutting against the outer side wall of the upper die base, and a locking space is formed between the pull handle and the limiting plate.

[0014] Furthermore, a pull rope is detachably connected to the upper die base, and the pull rope is used for tightening the end of the L-shaped rotating plate away from the torsion spring; when the pull rope tightens the L-shaped rotating plate, the L-shaped rotating plate unlocks the handle.

[0015] Advantages of the present utility model: In practical applications, when the punch is installed on the upper die base, the top of the punch is installed in the installation hole, the insertion rod is sequentially inserted into the first jack, the through hole and the second jack, and the insertion rod hoists the punch on the upper die base. The handle abuts against the outer side wall of the upper die base, and the locking member locks the handle on the upper die base. Place the workpiece on the stamping die core, and the stamping end of the stamping machine drives the upper die base to lift and lower, so that the punch lifts and lowers to stamp and form the workpiece on the stamping die core. When it is necessary to replace or disassemble the punch, the locking member unlocks the handle, applies an outward pulling force to the handle, so that the handle drives the insertion rod to move outward until the insertion rod is pulled out of the second jack and the through hole, and the punch can be disassembled from the installation hole. The structure of the present utility model is simple, the disassembly and assembly of the punch are convenient and fast, different punches with different structures can be replaced according to the forming requirements of different workpieces, and it has good versatility and strong practicability. Brief Description of the Drawings

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the present utility model.

[0017] Figure 2 It is an exploded structural schematic diagram of the present utility model.

[0018] Figure 3 is Figure 1 The enlarged view of part A in

[0019] Description of the reference numerals:

[0020] 1. Lower die base; 2. Stamping die core; 3. Guide post; 4. Upper die base; 5. Punch; 6. Quick-release structure; 7. Installation hole; 8. Through hole; 9. First jack; 10. Insertion rod; 11. Handle; 12. Locking member; 13. Positioning post; 14. Positioning hole; 15. Pin; 16. L-shaped rotating plate; 17. Torsion spring; 18. Locking space; 19. Limiting plate; 20. Pull handle; 21. Second jack. Detailed Embodiment

[0021] For the convenience of understanding by those skilled in the art, the present utility model will be further described below in conjunction with the embodiments and the drawings. The content mentioned in the embodiments does not limit the present utility model.

[0022] Such as Figures 1 to 3As shown in the figure, a stamping die for facilitating the replacement of a punch provided by the utility model includes a lower die base 1, a stamping die core 2 installed on the top surface of the lower die base 1, a plurality of guide posts 3 installed on the lower die base 1, an upper die base 4 slidably connected to the plurality of guide posts 3 and arranged to lift above the stamping die core 2, and a punch 5 detachably installed on the bottom surface of the upper die base 4. The punch 5 is installed on the upper die base 4 via a quick-release structure 6. The quick-release structure 6 includes a mounting hole 7 recessed in the bottom surface of the upper die base 4, a through hole 8 provided at the top of the punch 5, a first insertion hole 9 recessed from one side wall of the upper die base 4 and communicating with the mounting hole 7, a second insertion hole 21 recessed from one side wall of the mounting hole 7 and coaxially arranged with the first insertion hole 9, a plug rod 10 that can be detachably inserted into the first insertion hole 9, the through hole 8, and the second insertion hole 21, a handle 11 fixedly connected to the outer end of the plug rod 10 and used to abut against the outer side wall of the upper die base 4, and a locking member 12 movably arranged on the outer side wall of the upper die base 4 and used to lock or unlock the handle 11; when the top of the punch 5 is installed in the mounting hole 7, the first insertion hole 9, the through hole 8, and the second insertion hole 21 are coaxially communicated.

[0023] In practical applications, when the punch 5 is installed on the upper die base 4, the top of the punch 5 is installed in the mounting hole 7, the plug rod 10 is sequentially inserted into the first insertion hole 9, the through hole 8, and the second insertion hole 21. The plug rod 10 hoists the punch 5 on the upper die base 4, the handle 11 abuts against the outer side wall of the upper die base 4, and the locking member 12 locks the handle 11 on the upper die base 4; the workpiece is placed on the stamping die core 2, and the stamping end of the stamping machine drives the upper die base 4 to lift and lower, so that the punch 5 lifts and lowers to stamp and form the workpiece on the stamping die core 2. When it is necessary to replace or disassemble the punch 5, the locking member 12 unlocks the handle 11, and an outward pulling force is applied to the handle 11, so that the handle 11 drives the plug rod 10 to move outward until the plug rod 10 is pulled out of the second insertion hole 21 and the through hole 8, and the punch 5 can be disassembled from the mounting hole 7. The structure of the utility model is simple, the disassembly and assembly of the punch 5 are convenient and fast, the punch 5 with different structures can be replaced according to the forming requirements of different workpieces, and it has good versatility and strong practicability.

[0024] In this embodiment, a positioning post 13 protrudes downward from the top wall of the mounting hole 7, and a positioning hole 14 is recessed in the top surface of the punch 5. The positioning post 13 and the positioning hole 14 are in concave-convex fit. With this structural design, the concave-convex cooperation between the positioning post 13 and the positioning hole 14 improves the position accuracy and stability of the assembly of the punch 5 and the upper die base 4.

[0025] In this embodiment, the locking member 12 includes a pin 15 installed on the outer side wall of the upper die base 4, an L-shaped rotating plate 16 rotatably connected to one end of the pin 15, and a torsion spring 17 sleeved outside the pin 15. One end of the torsion spring 17 is fixedly connected to the upper die base 4, and the other end of the torsion spring 17 is fixedly connected to the L-shaped rotating plate 16. The torsion spring 17 is located between the L-shaped rotating plate 16 and the upper die base 4. The other end of the L-shaped rotating plate 16 locks the handle 11 on the upper die base 4 under the elastic force of the torsion spring 17. When the punch 5 is assembled on the upper die base 4, the L-shaped rotating plate 16 abuts against the handle 11 under the elastic force of the torsion spring 17 to lock the handle 11 on the upper die base 4. Since the handle 11 cannot move the plug rod 10 relative to the upper die base 4, the punch 5 is stably installed on the upper die base 4. When it is necessary to disassemble the punch 5, an acting force away from the handle 11 is applied to the L-shaped rotating plate 16, so that the L-shaped rotating plate 16 rotates outward around the pin 15 until the L-shaped rotating plate 16 is separated from the handle 11 to unlock the handle 11. At this time, an outward pulling force is applied to the handle 11, so that the handle 11 drives the plug rod 10 to move away from the upper die base 4 until the plug rod 10 is pulled out of the second jack 21 and the through hole 8. At this time, the punch 5 can be disassembled from the upper die base 4.

[0026] In this embodiment, the handle 11 is provided with a locking space 18; when the L-shaped rotating plate 16 is located in the locking space 18, the L-shaped rotating plate 16 locks the handle 11. The locking space 18 plays a role in limiting the L-shaped rotating plate 16, so that the L-shaped rotating plate 16 can stably lock the handle 11.

[0027] In this embodiment, the number of the locking members 12 is two, and the two locking members 12 are symmetrically arranged on both sides of the handle 11. The two locking members 12 lock the handle 11 on the upper die base 4 at the same time, and the stability of locking the handle 11 is good.

[0028] In this embodiment, the handle 11 is T-shaped. The handle 11 includes a limiting plate 19 fixedly connected to the plug rod 10 and a pull handle 20 vertically connected to the limiting plate 19. The pull handle 20 is located on the side of the limiting plate 19 away from the upper die base 4. The limiting plate 19 is used to abut against the outer side wall of the upper die base 4, and a locking space 18 is formed between the pull handle 20 and the limiting plate 19. With this structural design, it is convenient to push and pull the handle 11, and when the limiting plate 19 abuts against the outer side wall of the upper die base 4, it proves that the plug rod 10 is inserted in place and the assembly of the punch 5 is completed.

[0029] In this embodiment, a pulling rope is detachably connected to the upper die base 4, and the pulling rope is used to tighten one end of the L-shaped rotating plate 16 away from the torsion spring 17; when the pulling rope tightens the L-shaped rotating plate 16, the L-shaped rotating plate 16 unlocks the handle 11. In practical applications, after the L-shaped rotating plate 16 rotates to the position of the unlocking handle 11, the L-shaped rotating plate 16 in this state is tightened by the pulling rope, so that the L-shaped rotating plate 16 remains in the unlocked state continuously, enabling the operator to complete the insertion and extraction of the insertion rod 10 and the disassembly and assembly of the punch 5.

[0030] All the technical features in this embodiment can be freely combined according to actual needs.

[0031] The above embodiment is a preferred implementation scheme of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the technical solution is within the protection scope of the present invention.

Claims

1. A stamping die that is easy to replace the punch, characterized in that: The invention comprises a lower die base (1), a stamping die core (2) mounted on the top surface of the lower die base (1), a plurality of guide pillars (3) mounted on the lower die base (1), an upper die base (4) slidably connected to the plurality of guide pillars (3) and lifted and lowered above the stamping die core (2), and a punch (5) detachably mounted on the bottom surface of the upper die base (4), wherein the punch (5) is mounted on the upper die base (4) via a quick-release structure (6), wherein the quick-release structure (6) comprises a mounting hole (7) recessed on the bottom surface of the upper die base (4), a through hole (8) disposed on the top of the punch (5), a first through hole (9) recessed from a side wall of the upper die base (4) and connected to the mounting hole (7), and a first through hole (10) disposed on the top of the punch (5). A plug hole (9), a second plug hole (21) formed by being recessed in a side wall of the mounting hole (7) and coaxially arranged with the first plug hole (9), an insertion rod (10) which can be detachably inserted into the first plug hole (9), the through hole (8) and the second plug hole (21), a handle (11) fixedly connected to the outer end of the plug rod (10) and used to abut against the outer side wall of the upper die base (4), and a locking member (12) movably arranged on the outer side wall of the upper die base (4) and used to lock or unlock the handle (11); when the top of the punch (5) is installed in the mounting hole (7), the first plug hole (9), the through hole (8) and the second plug hole (21) are coaxially connected.

2. A stamping die for facilitating punch replacement according to claim 1, characterized in that: A positioning column (13) is convexly provided on the top wall of the mounting hole (7) and a positioning hole (14) is concavely provided on the top surface of the punch (5). The positioning column (13) and the positioning hole (14) are concavely matched.

3. A stamping die for facilitating punch replacement according to claim 1, characterized in that: The locking member (12) comprises a pin (15) mounted on the outer side wall of the upper die seat (4), an L-shaped rotating plate (16) one end of which is rotatably connected to the pin (15), and a torsion spring (17) sleeved outside the pin (15), one end of the torsion spring (17) being fixedly connected to the upper die seat (4), the other end of the torsion spring (17) being fixedly connected to the L-shaped rotating plate (16), the torsion spring (17) being located between the L-shaped rotating plate (16) and the upper die seat (4), and the other end of the L-shaped rotating plate (16) locking the handle (11) on the upper die seat (4) under the elastic force of the torsion spring (17).

4. A stamping die for facilitating punch replacement according to claim 3, characterized in that: The handle (11) is provided with a locking space (18); when the L-shaped rotating plate (16) is located in the locking space (18), the L-shaped rotating plate (16) locks the handle (11).

5. A stamping die for facilitating punch replacement according to claim 1, characterized in that: There are two locking members (12), and the two locking members (12) are symmetrically arranged on both sides of the handle (11).

6. A stamping die for facilitating punch replacement according to claim 4, characterized in that: The handle (11) includes a limit plate (19) fixedly connected to the insertion rod (10) and a pull handle (20) vertically connected to the limit plate (19), the pull handle (20) is located on the side of the limit plate (19) away from the upper mold base (4), the limit plate (19) is used to contact the outer side wall of the upper mold base (4), and a locking space (18) is formed between the pull handle (20) and the limit plate (19).

7. A stamping die for facilitating punch replacement according to claim 3, characterized in that: The upper die seat (4) is detachably connected with a drawstring, which is used to tighten one end of the L-shaped rotating plate (16) away from the torsion spring (17); when the drawstring tightens the L-shaped rotating plate (16), the L-shaped rotating plate (16) unlocks the handle (11).

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