Punch forming tool

Abstract

The utility model relates to the technical field of punch forming, and discloses a punch forming tool which comprises a composite male die and a female die which are arranged in a matched mode and used for completing punch forming of a workpiece through die assembly, the composite male die comprises a fixing plate, a plurality of locking assemblies are arranged on the fixing plate, and each locking assembly comprises a limiting clamping sleeve arranged on the fixing plate. A plurality of punches are further arranged on the fixing plate, and the limiting sleeve is formed by splicing a plurality of sliding blocks. The composite male die and the locking assembly are used in cooperation, the sliding block is clamped in the sliding groove through the mounting plate and the fixing plate, when the punch is mounted, only the clamping section needs to be aligned and inserted into the positioning groove, then the punch is fixed through the detachable pin shaft and the lock pin, the punch can be replaced easily and rapidly, meanwhile, through cooperation of the variable-diameter clamping section and the clamping groove, the punch can be conveniently replaced, and the cost is reduced. Stability and fixing precision of the punch are guaranteed, looseness caused by impact is effectively avoided, and the punch has the advantages of being convenient to disassemble and assemble and high in stability.

Description

Technical Field

[0001] This application relates to the technical field of stamping forming, and particularly relates to a stamping forming tooling. Background Art

[0002] In the technical field of stamping forming, the existing stamping forming tooling usually adopts the cooperation of a traditional upper die base and a lower die base, and realizes die closing and die opening through hydraulic or mechanical drive to complete the stamping forming of workpieces. In the traditional stamping tooling, the punch of the composite punch is connected by a long screw passing through the upper die from the upper surface of the upper die base and the threaded counterbore at the upper end of the punch.

[0003] However, in the actual use process, the screw of the above connection method is too long, and it is necessary to fix the punch when disassembling the punch, resulting in disassembling the screw from the upper surface of the upper die base, usually requiring two people to cooperate, and the operation is troublesome. Utility Model Content

[0004] In order to solve the problem that the punch of the traditional composite punch is fixed by a long screw and requires multiple people to cooperate for disassembly, which is inconvenient, this application provides a stamping forming tooling.

[0005] A stamping forming tooling provided by this application adopts the following technical solutions:

[0006] A stamping forming tooling includes a matching composite punch and a die, which are used to complete the stamping forming of workpieces by die closing. The composite punch includes a fixing plate, and a plurality of locking components are arranged on the fixing plate. The locking components include a limiting bushing arranged on the fixing plate. A plurality of punches are also arranged on the fixing plate. The limiting bushing is composed of a plurality of sliders spliced with each other and is used to fix the punches.

[0007] Preferably, a plurality of chutes are arranged on the fixing plate, the limiting bushing is slidably arranged in the chutes, an installation plate is arranged on one side of the fixing plate away from the die, and a plurality of positioning grooves are arranged on the installation plate.

[0008] Preferably, the punch includes a clamping section arranged in the positioning groove. A connecting section is fixedly arranged at one end of the clamping section away from the installation plate. A stamping section is fixedly arranged on the connecting section, and the shape of the stamping section can be customized according to the stamping requirements.

[0009] Preferably, the slider includes a clamping block arranged outside the clamping section. A guiding block is arranged on the clamping block, the guiding block is slidably arranged in the chute, and a clamping groove adapted to the clamping section is arranged on the clamping block.

[0010] Preferably, a positioning hole is arranged on the punch, and a detachable pin shaft is arranged in the positioning hole. Both ends of the detachable pin shaft pass through the corresponding clamping blocks and are slidably connected with the clamping blocks.

[0011] In summary, the present application includes the following beneficial technical effects:

[0012] By using the combined convex die and the locking component, the slider is clamped in the chute by the mounting plate and the fixing plate. When installing the punch, align the clamping section and insert it into the positioning groove, close the two clamping blocks and clamp them outside the clamping section, then sequentially pass the detachable pin through the positioning hole and the slider, and lock the detachable pin with a locking pin. When it is necessary to replace the punch, remove the locking pin and take out the detachable pin, then the punch can be taken out. The operation is relatively convenient. Through the variable-diameter clamping section and the card slot, the stability and fixing accuracy of the punch can be ensured, and loosening caused by subsequent impacts can be avoided; compared with the prior art, it has the effects of convenient disassembly and high stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is the first perspective three-dimensional structural schematic diagram of the embodiment of the application;

[0014] Figure 2 is the second perspective three-dimensional structural schematic diagram of the embodiment of the application;

[0015] Figure 3 is the third perspective three-dimensional structural schematic diagram of the embodiment of the application.

[0016] Description of the reference numerals: 1. upper die holder; 2. lower die holder; 3. combined convex die; 301. mounting plate; 302. fixing plate; 303. punch; 3031. stamping section; 3032. connecting section; 3033. clamping section; 4. die; 5. locking component; 501. slider; 5011. clamping block; 5012. guiding block; 502. detachable pin. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following will further elaborate on the present application in conjunction with the attached Figures 1-3 for a more detailed description.

[0018] The embodiment of the present application discloses a stamping and forming tooling. Referring to Figures 1-3 , a stamping and forming tooling includes a lower die holder 2 installed at the fixed end. A upper die holder 1 is slidably connected to the lower die holder 2 through guide columns. A hydraulically driven telescopic cylinder is connected to the side of the upper die holder 1 away from the lower die holder 2. A combined convex die 3 is installed at the lower end of the upper die holder 1. A die 4 adapted to the combined convex die 3 is installed at the upper end of the lower die holder 2 through bolts. By the telescopic movement of the telescopic cylinder, the upper die holder 1 drives the combined convex die 3 to move, realizing the closing and opening of the combined convex die 3 and the die 4, and completing the stamping and forming of the workpiece.

[0019] Referring to Figure 2The composite punch 3 includes a mounting plate 301 mounted on the upper die base 1 near the die 4, a plurality of positioning grooves are mounted on the mounting plate 301, a punch 303 is mounted in the positioning groove, a fixing plate 302 is detachably mounted on the side of the mounting plate 301 near the die 4, the mounting plate 301 is connected to the fixing plate 302 by bolts, the mounting plate 301 and the fixing plate 302 are mounted on the upper die base 1 by bolts, a plurality of slide grooves are mounted on the fixing plate 302 near the mounting plate 301, and the punch 303 is movably mounted in the corresponding positioning groove.

[0020] Reference Figure 3 The punch 303 includes a clamping section 3033 installed in the positioning groove, a connecting section 3032 is fixedly installed on the end of the clamping section 3033 away from the mounting plate 301, and a stamping section 3031 is fixedly installed on the connecting section 3032, wherein the shape of the stamping section 3031 can be customized according to the stamping requirements, and a forming groove adapted to the stamping section 3031 is provided on the die 4. While ensuring the overall strength of the stamping section 3031 and the connecting section 3032, the cross-sectional shape of the connecting section 3032 can be customized according to requirements, such as round or square. The clamping section 3033 adopts a truncated cone design with a wide middle and narrow two ends, which can improve the stability of the punch head in cooperation with the positioning groove, and can also effectively disperse the impact force generated during the stamping process and reduce the shaking caused by the impact.

[0021] Reference Figure 3 A locking assembly 5 is slidably installed in the slide groove. The locking assembly 5 includes a limit sleeve mounted on the punch 303. The limit sleeve is composed of two sliders 501. The two sliders 501 are connected by a detachable pin shaft 502. The punch 303 can be removed by removing the locking pin and removing the detachable pin shaft 502, which is convenient for disassembly and assembly.

[0022] Reference Figure 2 The slider 501 includes a guide block 5012 slidably installed in the slide groove, and a clamping block 5011 is fixedly installed on the guide block 5012. A mutually matching avoidance groove is installed between the two clamping blocks 5011 to achieve partial overlap on the two clamping blocks 5011. A positioning hole is provided on the punch 303, and a detachable pin shaft 502 is installed in the positioning hole. The two ends of the detachable pin shaft 502 can move through the overlapping parts of the two clamping blocks 5011. The end of the detachable pin shaft 502 is locked by a locking pin. The locking pin can be an R-shaped pin to avoid the detachment of the detachable pin shaft 502 due to vibration during stamping. A clamping groove adapted to the clamping section 3033 is provided on the clamping block 5011. The thicker part of the clamping section 3033 will be tightly wrapped by the clamping groove to form a tight connection, which can effectively prevent the punch 303 from shaking or loosening when subjected to force.

[0023] The implementation principle of a stamping tool in the embodiment of the present application is:

[0024] First, install the stamping tooling on the fixed end, such as a stamping machine tool, ensuring that the upper die base 1 and the lower die base 2 are firmly connected through the guide columns and can slide smoothly along the guide columns. Install the compound punch 3 on the upper die base 1, ensuring that the positioning groove on the mounting plate 301 is aligned with the sliding groove on the fixed plate 302, and use bolts to fasten and connect the two.

[0025] Then, insert the punches 303 one by one into the positioning grooves of the mounting plate 301, and use two clamping blocks 5011 to close and clamp on the outside of the clamping connection 3033. Use the detachable pin shaft 502 to pass through the positioning holes and the clamping blocks 5011 in sequence, and lock them with a locking pin to fix the punches 303, ensuring that the punches 303 will not loosen or shake. Install the die 4 on the lower die base 2 and fix it with bolts, ensuring that the forming groove on the die is completely adapted to the shape of the stamping section 3031 of the punch 303.

[0026] Start the hydraulically driven telescopic cylinder. The telescopic cylinder pushes the upper die base 1 to move downward along the guide columns, making the compound punch 3 gradually approach the die 4. Before the compound punch 3 contacts the die 4, the stamping section 3031 of the punch 303 first enters the forming groove of the die, preparing to stamp the workpiece. As the upper die base 1 continues to press down, the stamping section 3031 of the punch 303 stamps the workpiece placed in the forming groove of the die, and stamps the workpiece into the required shape according to the shape and size of the stamping section 3031. After stamping, the telescopic cylinder works in reverse, pushing the upper die base 1 to rise along the guide columns, separating the compound punch 3 from the die 4, and completing one stamping cycle. After stamping, take out the stamped workpiece from the forming groove of the die. Conduct quality inspection on the workpiece to ensure that the stamping accuracy and dimensions meet the design requirements.

[0027] Regularly clean and lubricate the stamping tooling to ensure smooth operation of each component.

[0028] Check the wear conditions of the punches 303 and the die 4, and replace them in time if necessary.

[0029] Finally, several points should be noted: First, in the description of this application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be understood in a broad sense. It can be a mechanical connection or an electrical connection, or it can be the internal communication of two components. It can be directly connected. "Upper", "lower", "left", "right", etc. are only used to represent relative position relationships. When the absolute position of the object being described changes, the relative position relationship may change;

[0030] Second: In the attached drawings of the disclosed embodiments of the present utility model, only the structures related to the disclosed embodiments are involved. For other structures, reference can be made to the usual designs. Without conflict, the same embodiments and different embodiments of the present utility model can be combined with each other;

[0031] Finally: The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

[0032] The above are all the preferred embodiments of this application, and do not limit the protection scope of this application accordingly. Therefore, any equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A stamping tooling, comprising a combined punch (3) and a die (4) which are arranged in a matching manner and are used to complete the stamping of a workpiece by closing the die. It is characterized in that: The composite punch die (3) includes a fixing plate (302), on which a number of locking components (5) are provided. The locking components (5) include a limit clamping sleeve provided on the fixing plate (302). A number of punch heads (303) are also provided on the fixing plate (302). The limit clamping sleeve is composed of a number of sliding blocks (501) spliced with each other and is used to fix the punch heads (303).

2. The stamping tooling according to claim 1, characterized in that: A number of sliding grooves are provided on the fixing plate (302). The limit clamping sleeve is slidably arranged in the sliding grooves. An installation plate (301) is provided on one side of the fixing plate (302) away from the die (4), and a number of positioning grooves are provided on the installation plate (301).

3. The stamping tooling according to claim 2, characterized in that: The punch head (303) includes a clamping section (3033) arranged in the positioning groove. At one end of the clamping section (3033) away from the installation plate (301), a connecting section (3032) is fixedly arranged. A stamping section (3031) is fixedly arranged on the connecting section (3032), and the shape of the stamping section (3031) can be customized according to the stamping requirements.

4. The stamping tooling according to claim 3, characterized in that: The sliding block (501) includes a clamping block (5011) arranged outside the clamping section (3033). A guiding block (5012) is provided on the clamping block (5011). The guiding block (5012) is slidably arranged in the sliding groove, and a clamping groove adapted to the clamping section (3033) is provided on the clamping block (5011).

5. A stamping tooling according to claim 4, characterized in that: A positioning hole is provided on the punch head (303), and a detachable pin shaft (502) is arranged in the positioning hole. Both ends of the detachable pin shaft (502) pass through the corresponding clamping blocks (5011) and are slidably connected with the clamping blocks (5011).

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