Stamping die replacing device

Abstract

The utility model discloses a stamping die replacing device, which relates to the stamping die replacing field, and comprises a stamping machine and an upper die installed on the stamping machine, the stamping machine is composed of a lifting platform and a base, the lower end of the lifting platform is fixedly provided with two clamping blocks, the upper end of the upper die is connected with a connecting plate through a bolt, and the upper end of the connecting plate is fixedly connected with the base. A clamping plate is fixedly arranged at the upper end of the connecting plate, two clamping grooves for clamping blocks to pass through are formed in the upper end of the clamping plate, the cross sections of the clamping grooves and the cross sections of the clamping blocks are funnel-shaped, a spring groove is formed in one side of each clamping block, and a clamping rod is movably arranged on the inner side of each spring groove; through the shape arrangement of the clamping groove and the clamping block, when the lifting platform is connected with the upper die, other connecting tools are not needed, only the base needs to be moved, the upper die is convenient to replace, and particularly, the clamping plate and the clamping block can support the upper die with large weight.

Description

Technical Field

[0001] The utility model relates to the field of stamping die replacement, in particular to a stamping die replacement device. Background Art

[0002] Stamping die is a special process equipment used to process materials (metal or non-metal) into parts (or semi-finished products) in cold stamping process. It is called cold stamping die (commonly known as cold stamping die). Stamping is a pressure processing method that uses a die installed on a press to apply pressure to the material at room temperature to cause separation or plastic deformation, thereby obtaining the required parts.

[0003] When using some large molds, a large hydraulic press is generally used to drive the mold for stamping. The upper mold is fixed on the output end of the hydraulic press, and the lower mold is fixed on the workbench of the hydraulic press. Due to its large weight, it is difficult to replace the upper mold at the output end of the hydraulic press.

[0004] Therefore, it is necessary to propose a stamping die replacement device to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a stamping die replacement device to solve the problem that a heavy upper die is difficult to replace.

[0006] To achieve the above-mentioned object, the utility model provides the following technical solution: a stamping die replacement device, comprising a stamping machine and an upper die mounted on the stamping machine, the stamping machine being composed of a lifting platform and a base, two engaging blocks being fixedly provided at the lower end of the lifting platform, a connecting plate being connected to the upper end of the upper die by bolts, a engaging plate being fixedly provided at the upper end of the connecting plate, and two engaging grooves being provided at the upper end of each engaging plate for the engaging blocks to pass through;

[0007] The cross sections of the engaging groove and the engaging block are both funnel-shaped;

[0008] A spring groove is provided on one side of the clamping block, a clamping rod is movably provided inside the spring groove, and a round hole for clamping the clamping rod is provided on the clamping plate.

[0009] Preferably, a clamping spring is fixedly provided on the inner wall of the spring groove, the end of the clamping spring is fixedly connected to the end of the clamping rod, an unlocking rod is movably provided on the inner side of the circular hole, and there is a clearance fit between the circular hole and the unlocking rod.

[0010] Preferably, an inclined surface is provided on one end of the clamping rod corresponding to the unlocking rod.

[0011] Preferably, an outer gear ring is fixedly provided on the outer side of the clamping rod, and two rack plates are fixedly provided on the inner side of the clamping plate, and the rack plates and the outer gear ring are meshed with each other;

[0012] The clamping rod is arranged to rotate through gear meshing.

[0013] Preferably, an abutment plane is provided on the inclined surface, and the end of the unlocking rod contacts the abutment plane.

[0014] Preferably, the base is configured to be telescopically movable, and the edge of the engaging groove corresponding to the engaging block is chamfered.

[0015] Preferably, the engaging block and the engaging plate are of equal length.

[0016] The technical effects and advantages of this utility model are:

[0017] 1. Through the shape setting of the snap-fit ​​groove and the snap-fit ​​block, when connecting the lifting platform and the upper mold, no other connection tools are needed. Only the base needs to be moved, which facilitates the replacement of the upper mold. In particular, the snap-fit ​​plate and the snap-fit ​​block can support the upper mold with a heavier weight.

[0018] 2. Through the setting of the connecting plate, when the operator replaces upper dies of different sizes and specifications, as long as the upper dies are provided with corresponding threaded holes, they can be connected using the threaded holes. The clamping plate and the clamping block can be applied to upper dies of various specifications.

[0019] 3. By setting the rack plate, the outer gear ring is used to drive the clamping rod to rotate, so that the clamping rod drives the inclined plane to rotate, thereby changing the inclination direction of the inclined plane. This can effectively prevent the clamping plate from continuing to move and automatically lock. After the unlocking rod is used to unlock, the elasticity of the clamping spring allows the clamping rod to drive the inclined plane to reset, which is convenient for next use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of the punching die replacement device of the utility model from the first perspective.

[0021] Figure 2 This is a schematic diagram of the structure of the stamping die replacement device of the utility model from another perspective.

[0022] Figure 3 This is a schematic diagram of the disassembly structure of the engaging block and engaging plate of the utility model.

[0023] Figure 4 This is a schematic diagram of the cross-sectional structure of the engaging block and engaging plate of the utility model.

[0024] Figure 5 This is a schematic diagram of the structure of the clamping rod of the utility model.

[0025] In the figure: 1. Punch; 2. Upper die; 3. Clamping block; 4. Clamping plate; 5. Clamping groove; 6. Connecting plate; 7. Spring groove; 8. Clamping rod; 9. Inclined surface; 10. External gear ring; 11. Rack plate; 12. Unlocking rod; 13. Abutment plane; 14. Clamping spring. DETAILED DESCRIPTION

[0026] The utility model provides Figure 1 - Figure 5 The stamping die replacement device shown includes a stamping machine 1 and an upper die 2 installed on the stamping machine 1. The stamping die is generally composed of an upper die 2 and a lower die, wherein the lower die is not shown in the figure. The upper die 2 and the lower die are both existing technologies and will not be described in detail here. The stamping machine 1 is composed of a lifting platform and a base. The base is retractable and movable. The lifting platform is the main component of the stamping machine 1, the hydraulic cylinder, which is mainly used to drive the upper die 2 to move up and down for stamping work. Two locking blocks 3 are fixed at the lower end of the lifting platform, and a connecting plate 6 is provided at the upper end of the upper die 2 through bolt connection. A locking plate 4 is fixed at the upper end of the connecting plate 6. The connecting plate 6 is mainly used to connect the upper die 2 and the locking plate 4 to facilitate the replacement of the upper die 2. Two locking grooves 5 for the locking block 3 to pass through are provided on the upper end of the locking plate 4. The cross-sections of the locking grooves 5 and the locking block 3 are both funnel-shaped, and the lengths of the locking block 3 and the locking plate 4 are equal.

[0027] When replacing the upper mold 2, the operator moves a set of molds, including the upper mold 2 and the lower mold, to the base using a crane and a lifting rope, and at the same time fixes the clamping plate 4 to the upper mold 2 through the connecting plate 6, and connects it with bolts to control the movement of the base, so that the base drives the mold to move, and the mold drives the clamping plate 4 to move. The clamping groove 5 corresponds to the edge of the clamping block 3 with a chamfer, and the clamping plate 4 is plugged into the clamping block 3 through the clamping groove 5. Through the shape setting of the clamping groove 5 and the clamping block 3, when connecting the lifting platform and the upper mold 2, no other connection tools are needed, only the base needs to be moved, which is convenient for replacing the upper mold 2. In particular, the clamping plate 4 and the clamping block 3 can support the heavier upper mold 2.

[0028] By setting the connecting plate 6, when the operator replaces the upper mold 2 of different sizes and specifications, as long as the upper mold 2 is provided with corresponding threaded holes, the threaded holes can be used for connection, and the clamping plate 4 and the clamping block 3 can be applied to upper molds 2 of various specifications.

[0029] A spring groove 7 is provided on one side of the locking block 3, and a locking rod 8 is movably provided on the inner side of the spring groove 7. A circular hole for locking the locking rod 8 is provided on the locking plate 4. A locking spring 14 is fixedly provided on the inner wall of the spring groove 7, and the end of the locking spring 14 is fixedly connected to the end of the locking rod 8. An unlocking rod 12 is movably provided on the inner side of the circular hole. An inclined surface 9 is provided on one end of the locking rod 8 corresponding to the unlocking rod 12. When the locking plate 4 and the locking block 3 are connected, the inclined surface 9 facilitates the locking rod 8 to enter the interior of the spring groove 7. There is a clearance fit between the circular hole and the unlocking rod 12, which facilitates the unlocking rod 12 to be taken out at any time. A contact plane 13 is provided on the inclined surface 9, and the end of the unlocking rod 12 contacts the contact plane 13.

[0030] After the locking plate 4 and the locking block 3 are fully docked, the locking rod 8 will enter the circular hole through the locking spring 14, completing the horizontal limitation of the locking plate 4 and the locking block 3, preventing the upper mold 2 from moving. Through the setting of the abutment plane 13, when the unlocking rod 12 pushes the locking rod 8, the unlocking rod 12 is prevented from directly contacting the inclined surface 9, making it easier for the unlocking rod 12 to push the locking rod 8.

[0031] An outer gear ring 10 is fixed to the outside of the clamping rod 8, and two rack plates 11 are fixed to the inside of the clamping plate 4. The rack plate 11 and the outer gear ring 10 mesh with each other, and the clamping rod 8 is set to rotate through gear meshing. When the clamping plate 4 moves, the rack plate 11 is set to drive the clamping rod 8 to rotate through the outer gear ring 10, so that the clamping rod 8 drives the inclined surface 9 to rotate, thereby changing the inclination direction of the inclined surface 9, which can effectively prevent the clamping plate 4 from continuing to move. After being unlocked by using the unlocking rod 12, the elasticity of the clamping spring 14 allows the clamping rod 8 to drive the inclined surface 9 to reset, which is convenient for next use.

Claims

1. A stamping die replacement device, comprising a stamping machine (1) and an upper die (2) mounted on the stamping machine (1), characterized in that: The punching machine (1) is composed of a lifting platform and a base. Two engaging blocks (3) are fixedly provided at the lower end of the lifting platform. A connecting plate (6) is connected to the upper end of the upper die (2) by bolts. A engaging plate (4) is fixedly provided at the upper end of the connecting plate (6). Two engaging grooves (5) for the engaging blocks (3) to pass through are provided at the upper end of each engaging plate (4). The cross sections of the engaging groove (5) and the engaging block (3) are both funnel-shaped; A spring groove (7) is provided on one side of the locking block (3), a locking rod (8) is movably provided inside the spring groove (7), and a circular hole for locking the locking rod (8) is provided on the locking plate (4).

2. The stamping die replacement device according to claim 1, characterized in that: A clamping spring (14) is fixedly provided on the inner wall of the spring groove (7), the end of the clamping spring (14) is fixedly connected to the end of the clamping rod (8), and an unlocking rod (12) is movably provided on the inner side of the circular hole, and there is a clearance fit between the circular hole and the unlocking rod (12).

3. The stamping die replacement device according to claim 2, characterized in that: An inclined surface (9) is provided on one end of the clamping rod (8) corresponding to the unlocking rod (12).

4. The stamping die replacement device according to claim 2, characterized in that: An outer gear ring (10) is fixedly provided on the outer side of the clamping rod (8), and two rack plates (11) are fixedly provided on the inner side of the clamping plate (4), and the rack plates (11) and the outer gear ring (10) are meshed with each other; The clamping rod (8) is arranged to rotate through gear meshing.

5. The stamping die replacement device according to claim 3, characterized in that: An abutting plane (13) is provided on the inclined surface (9), and the end of the unlocking rod (12) contacts the abutting plane (13).

6. The stamping die replacement device according to claim 1, characterized in that: The base is configured to be telescopically movable, and the edge of the engaging groove (5) corresponding to the engaging block (3) is chamfered.

7. The stamping die replacement device according to claim 1, characterized in that: The lengths of the engaging block (3) and the engaging plate (4) are equal.

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