Punching jig

Abstract

The invention provides a punching jig. The punching jig comprises a connecting plate, a supporting base, a supporting plate, a clamping assembly, a sliding block, a punching cutter and a punching driving source. The supporting seat is connected with the connecting plate, and the supporting plate is connected with the supporting seat; the clamping assembly is connected to the supporting base and used for clamping and fixing a product. The sliding block is connected with the supporting plate in a sliding mode, and the punching cutter is connected with the sliding block. And the punching driving source is connected with the connecting plate and drives the sliding block to move, so that the punching cutter cuts convex hulls on the surface of the product. The clamping device further comprises a clamping mechanism, the clamping mechanism comprises a supporting block and an abutting assembly, the supporting block is connected with the clamping assembly, and the abutting assembly is connected with the sliding block. The sliding block drives the abutting assembly to move, so that the abutting assembly and the supporting block clamp the side, away from the surface of the product, of the convex hull. The convex hulls on the product can be conveniently cut off.

Description

Technical Field

[0001] The present application relates to the technical field of jigs, and in particular to a punching jig. Background Art

[0002] Metal injection molding (MIM) is a process technology that mixes metal powder and organic binder evenly and then injects it into the desired shape through an injection molding machine. Metal injection molding technology combines the versatility of plastic injection molding with the strength and integrity of forged metals to produce high-density products with excellent material properties. When processing products, the metal injection molding process first mixes metal powder and organic binder evenly to form a mixture for injection molding. The mixture is then heated in the barrel of the injection machine to become a fluid plastic material and injected into the mold under appropriate injection pressure to form a blank. The organic binder contained in the blank is then removed and the blank is sintered.

[0003] refer to Figure 1 , which requires metal injection molding production Figure 1 The product 100 in the figure has a wall thickness of 0.7 mm. The wall thickness of the product 100 is thin and the length is long. The gate injection position is small, and it is not easy to be molded by injection. A convex hump 101 needs to be added to the pouring point to facilitate molding. However, this convex hump 101 protrudes beyond the surface of the product 100, affecting the subsequent sintering process, so the convex hump 101 needs to be cut off.

[0004] In the related art, operators are generally required to use cutting tools to cut off the bulges on the product. The product needs to be clamped and fixed before cutting. A large shear force is required during cutting, which leads to high labor intensity. Improper operation can easily damage the product surface. Summary of the invention

[0005] In order to facilitate the removal of bulges on products, the present application provides a punching jig.

[0006] The present application provides a punching jig, which adopts the following technical solution: A punching jig, comprising: Connecting plate; A support seat connected to the connecting plate; A support plate, the support plate is connected to the support seat; A clamping assembly, the clamping assembly is connected to the support seat, and the clamping assembly is used to clamp and fix the product; A slider, the slider being slidably connected to the support plate; A punching knife, wherein the punching knife is connected to the slider; A punching drive source is connected to the connecting plate, and the punching drive source drives the slider to move so that the punching knife cuts the convex bulge on the surface of the product.

[0007] By adopting the above technical solution, the product is first clamped and fixed by the clamping assembly, and then the punching drive source is started. The punching drive source drives the slider to slide, and the slider drives the punching knife to cut off the bulge on the product, thereby improving the cutting efficiency and accuracy and reducing damage to the product surface.

[0008] Optionally, the clamping assembly includes an X-axis positioning plate, a Y-axis positioning plate and a Z-axis positioning plate, and the X-axis positioning plate, the Y-axis positioning plate and the Z-axis positioning plate are all connected to the support seat, and the X-axis positioning plate, the Y-axis positioning plate and the Z-axis positioning plate are all abutted against one side of the product, the X-axis positioning plate limits the X-axis direction of the product, the Y-axis positioning plate limits the Y-axis direction of the product, and the Z-axis positioning plate limits the Z-axis direction of the product.

[0009] By adopting the above technical solution, the X-axis positioning plate can limit the X-axis direction of the product, the Y-axis positioning plate can limit the Y-axis direction of the product, and the Z-axis positioning plate can limit the Z-axis direction of the product, thereby achieving precise positioning and stable clamping of the product in the three directions of X-axis, Y-axis and Z-axis, effectively reducing the problem of product displacement or shaking during the punching process, thereby improving the convex hull cutting accuracy and product quality.

[0010] Optionally, it also includes a clamping mechanism, which includes a support block and a clamping assembly, the support block is connected to the clamping assembly, and the clamping assembly is connected to the slider; the slider drives the clamping assembly to move so that the clamping assembly and the support block clamp the bulge away from the side of the product surface.

[0011] By adopting the above technical solution, since the product of the present application is made by metal injection molding, cutting the bulge requires a large shear force, and direct punching will cause uneven force on both sides of the bulge, which is prone to uneven cutting surface of the product. The punching drive source of the present application drives the slider to move, and the slider drives the clamping assembly to move, so that the support block and the clamping assembly can clamp the side of the bulge away from the product surface, thereby ensuring the force stability of the bulge during the punching process, so that the cross section of the bulge is flatter when it is cut.

[0012] Optionally, the pressing assembly includes a pressing block and an elastic member, the pressing block is slidably connected to the slider, and the elastic member is respectively connected to the pressing block and the slider.

[0013] By adopting the above technical solution, the punching drive source drives the slider to move, and the slider drives the clamping block to move, so that the clamping block abuts against the bulge, the slider continues to move, the elastic member deforms, and the elastic member applies force to the clamping block, so that the clamping block and the support block clamp the bulge.

[0014] Optionally, both the supporting block and the pressing block are provided with a receiving groove, and the receiving groove is used to receive a convex bump of the product.

[0015] By adopting the above technical solution, the convex bulge is located in the accommodating groove, and when the pressing block and the supporting block clamp the convex bulge, a uniform force can be applied to the convex bulge.

[0016] Optionally, a trimming assembly is provided on the support seat, and the trimming assembly includes a jacking drive source and a grinder, and the jacking drive source is connected to the connecting plate; the jacking drive source drives the grinder to move, and the grinder grinds the area after the bulge of the product is cut off.

[0017] By adopting the above technical solution, the jacking drive source drives the grinder to move, so that the grinder is close to the product, so as to grind the area on the product after the bulge is cut off, effectively remove the product burrs and improve the product quality.

[0018] Optionally, the clamping assembly includes a clamping drive source, which is connected to the support seat and clamps the top side of the product.

[0019] By adopting the above technical solution, the pressing driving source presses the top side of the product, making the position of the product more stable, reducing the problem of reduced processing accuracy due to product shaking, and facilitating cutting convex bulges and grinding operations.

[0020] Optionally, the lifting drive source drives the grinder to move and eject the product.

[0021] By adopting the above technical solution, after grinding the area on the product where the bulge is cut off, the clamping assembly clamps the product, and the lifting drive source drives the grinder to continue to move upward, so that the grinder ejects the product, which is conducive to removing the product.

[0022] Optionally, a material collection box is connected to the bottom side of the connecting plate, and the connecting plate, the supporting plate and the supporting seat are all provided with a material drop groove, the material drop groove is connected to the material collection box, and the cut convex bumps fall into the material collection box through the material drop groove.

[0023] By adopting the above technical solution, the cut humps and the debris generated by grinding fall into the collection box through the drop chute for collection, thereby reducing the problem of secondary cleaning caused by the residual or scattered humps.

[0024] Optionally, the punching knife includes a tool seat and a tool head, the tool seat is detachably connected to the slider, and the tool head is detachably connected to the tool seat.

[0025] By adopting the above technical solution, when the cutter head is worn, the tool holder and the cutter head can be disassembled and then replaced with a new cutter head, which is convenient for later maintenance.

[0026] In summary, the present application includes at least one of the following beneficial effects: 1. Fix the product through the clamping assembly, and then drive the slider to move through the punching drive source, which in turn drives the punching knife to accurately cut off the convex bulge on the surface of the product, thereby improving the cutting efficiency and reducing the risk of damage caused by manual operation; 2. The clamping block and the supporting block clamp the bulge to ensure the force stability of the bulge during the cutting process, which is conducive to the cutting of the bulge by the cutter head; the bulge after cutting falls into the collecting box through the falling chute, which is convenient for the collection and processing of the bulge; 3. The lifting drive source drives the grinder to approach the bottom side of the product, and the grinder grinds the area where the bulge is removed to remove burrs; the lifting drive source drives the grinder to continue to move upward, so that the grinder ejects the product to achieve product unloading. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of the product to be processed; Figure 2 This is a schematic diagram of the overall structure of the punching fixture of Example 1 of the present application; Figure 3 This is a schematic diagram of the structure of Example 1 of the present application without the Z-axis positioning plate; Figure 4 is a schematic diagram of the overall structure of the punching fixture of Example 2 of the present application; FIG5 is a schematic diagram of the cross-section structure of Example 2 of the present application; FIG6 is an enlarged structural schematic diagram of part A in FIG5; FIG7 is a schematic diagram of the structure of Example 2 of the present application without the Z-axis positioning plate; FIG8 is an enlarged structural schematic diagram of part B in FIG7.

[0028] Explanation of the accompanying drawings: 1. connecting plate; 2. supporting seat; 3. supporting plate; 31. blanking trough; 4. sliding block; 5. punching knife; 51. tool seat; 52. tool head; 6. punching drive source; 7. clamping assembly; 71. X-axis positioning plate; 72. Y-axis positioning plate; 73. Z-axis positioning plate; 74. clamping drive source; 8. clamping mechanism; 81. supporting block; 811. accommodating groove; 82. clamping assembly; 821. clamping block; 822. elastic member; 9. finishing assembly; 91. lifting drive source; 92. grinder; 10. collection box; 100. product; 101. convex hump. DETAILED DESCRIPTION

[0029] The following is combined with Figure 2-8 This application is described in further detail.

[0030] Embodiment 1: Embodiment 1 of the present application provides a punching jig.

[0031] refer to Figure 2 and Figure 3 The punching jig includes a connecting plate 1, a support seat 2 and a support plate 3. The support seat 2 is fixedly connected to the connecting plate 1, and the support plate 3 is fixedly connected to the support seat 2. The support seat 2 is provided with a groove, and the middle part of the support plate 3 is located in the groove of the support seat 2.

[0032] refer to Figure 2 and Figure 3 , a clamping assembly 7 is provided on the support seat 2, and the clamping assembly 7 includes an X-axis positioning plate 71, a Y-axis positioning plate 72 and a Z-axis positioning plate 73, and the X-axis positioning plate 71, the Y-axis positioning plate 72 and the Z-axis positioning plate 73 are all fixedly connected to the support seat 2. The sliding direction of the slider 4 is the X-axis direction, the direction perpendicular to the X-axis on the horizontal plane is the Y-axis direction, and the vertical direction is the Z-axis direction. The Z-axis positioning plate 73 is provided with a groove, and the product 100 is placed in the groove, the convex 101 of the product 100 faces downward, and the bottom side of the product 100 abuts against the Z-axis positioning plate 73, and the Z-axis positioning plate 73 can limit the Z-axis direction of the product 100. The X-axis positioning plate 71 abuts against the end of the product 100, and the X-axis positioning plate 71 can limit the X-axis direction of the product 100. The Y-axis positioning plate 72 abuts against the side of the product 100, and the Y-axis positioning plate 72 can limit the Y-axis direction of the product 100. The X-axis positioning plate 71 , the Y-axis positioning plate 72 and the Z-axis positioning plate 73 together constitute a three-dimensional spatial positioning structure of the product 100 , making the position of the product 100 more stable and accurate, and also facilitating the clamping and removal of the product 100 .

[0033] refer to Figure 2 and Figure 3 The punching jig further includes a slider 4, a punching knife 5 and a punching drive source 6. The slider 4 is slidably connected to the support plate 3, and the punching knife 5 is detachably connected to the slider 4, and the punching knife 5 is close to the bottom side of the product 100. In this embodiment, the punching drive source 6 is specifically a cylinder, the body of the punching drive source 6 is fixedly connected to the connecting plate 1, and the output end of the punching drive source 6 is fixedly connected to the slider 4. When the punching drive source 6 is started, the punching drive source 6 drives the slider 4 to move along the length direction of the support plate 3, so that the knife head 52 cuts off the convex bump 101.

[0034] refer to Figure 2 and Figure 3In the present embodiment, since the product 100 has two convex bumps 101, two punching knives 5 are provided accordingly, and both punching knives 5 are connected to the slider 4, so that one punching action of the punching driving source 6 can simultaneously cut the two convex bumps 101 on the product 100.

[0035] The implementation principle of the punching jig of Example 1 of the present application is as follows: the product 100 is placed on the Z-axis positioning plate 73, and the product 100 is respectively in contact with the X-axis positioning plate 71, the Y-axis positioning plate 72 and the Z-axis positioning plate 73, thereby defining the position of the product 100. Then, the punching driving source 6 is started, the punching driving source 6 drives the slider 4 to move, and the slider 4 drives the punching knife 5 to move, so that the knife head 52 cuts off the convex bump 101, thereby making the surface of the product 100 smoother.

[0036] Embodiment 2: Embodiment 2 of the present application provides a punching jig, and the difference between Embodiment 2 of the present application and Embodiment 1 is that: refer to Figure 4 In this embodiment, the clamping assembly 7 also includes a clamping drive source 74, which specifically adopts an angle cylinder. The body of the clamping drive source 74 is fixedly connected to the support seat 2, and the output end of the clamping drive source 74 can be lifted and rotated, so as to clamp the top side of the product 100.

[0037] refer to Figure 5 and Figure 6 The punching jig also includes a clamping mechanism 8, which includes a support block 81 and a clamping assembly 82, and the clamping assembly 82 includes a clamping block 821 and an elastic member 822. The support block 81 is fixedly connected to the Z-axis positioning plate 73, and the clamping block 821 is slidably connected to the slider 4. The clamping block 821 and the support block 81 are respectively located on both sides of the convex bump 101. The elastic member 822 specifically adopts a spring, and the elastic member 822 is respectively fixedly connected to the clamping block 821 and the slider 4. The clamping block 821 and the support block 81 are provided with a receiving groove 811 on one side close to each other, and the shape of the receiving groove 811 is adapted to the shape of the convex bump 101, and the convex bump 101 can be accommodated in the receiving groove 811.

[0038] refer to Figure 7 and Figure 8The punching knife 5 includes a knife seat 51 and a knife head 52. The knife seat 51 is detachably connected to the slider 4, and the knife head 52 is detachably connected to the knife seat 51. When the punching driving source 6 is started, the punching driving source 6 drives the slider 4 to move, and the slider 4 drives the abutting block 821 to move. The abutting block 821 abuts against the convex bump 101. The slider 4 continues to move, so that the elastic member 822 is compressed, and the elastic member 822 applies force to the abutting block 821, so that the abutting block 821 and the support block 81 clamp the convex bump 101 away from the side of the product 100. The knife head 52 is located above the abutting block 821, and the knife head 52 contacts the lower surface of the product 100. When the abutting block 821 and the support block 81 clamp the convex 101, the slider 4 continues to move, at which time the cutter head 52 contacts the convex 101 and gradually cuts the convex 101. The abutting block 821 and the support block 81 clamp the convex 101 so that the convex 101 is subjected to more uniform force when being cut. In this embodiment, the cutter head 52 uses a thinner blade to reduce the force applied by the cutter head 52 to the convex 101 in the vertical direction during the cutting process, which is conducive to smooth cutting. The slider 4 moves until the cutter head 52 contacts the support block 81, and the convex 101 is completely cut off. Then the punching drive source 6 drives the slider 4 to move in the opposite direction, driving the cutter head 52 away from the support block 81, and then the abutting block 821 moves away from the support block 81, and the abutting block 821 and the support block 81 release the clamping of the convex 101, and the convex 101 falls due to gravity.

[0039] refer to Figure 5 and Figure 6 A material collecting box 10 is fixedly connected to the bottom side of the connecting plate 1. The connecting plate 1, the supporting plate 3 and the supporting seat 2 are provided with a material dropping groove 31. The material dropping groove 31 is connected to the material collecting box 10. The cut convex bumps 101 can fall into the material collecting box 10 through the material dropping groove 31.

[0040] refer to Figure 5 and Figure 6 A trimming assembly 9 is provided on the support seat 2, and the trimming assembly 9 includes a lifting driving source 91 and a grinder 92. In this embodiment, the lifting driving source 91 specifically adopts an electric push rod, and the body of the lifting driving source 91 is fixedly connected to the connecting plate 1. The grinder 92 includes a body and a grinding head, and the output end of the lifting driving source 91 is fixedly connected to the body of the grinder 92. The lifting driving source 91 can drive the grinder 92 to move upward, so that the grinding head contacts and grinds the area of ​​the product 100 after the convex bump 101 is cut off, thereby removing burrs and improving the quality of the product 100.

[0041] refer to Figure 5 and Figure 6When the product 100 is placed on the Z-axis positioning plate 73, the pressing drive source 74 is started again, so that the product 100 is pressed against the Z-axis positioning plate 73, so that the position of the product 100 is more stable, which is conducive to cutting the convex bump 101 and grinding the area of ​​the product 100 where the convex bump 101 is removed, and the shaking and displacement of the product 100 are reduced. After grinding the area where the convex bump 101 is removed from the product 100, the pressing drive source 74 is started again, so that the pressing drive source 74 releases the limit on the top side of the product 100. Then, the grinder 92 is stopped, and the lifting drive source 91 is started, so that the lifting drive source 91 drives the grinder 92 to continue to move upward, so that the grinder 92 lifts the product 100 from the Z-axis positioning plate 73, and the unloading operation of the product 100 is realized.

[0042] The implementation principle of a punching jig in Example 2 of the present application is as follows: first, the product 100 is placed on the Z-axis positioning plate 73, and then the pressing drive source 74 presses the product 100 on the Z-axis positioning plate 73. Then, the punching drive source 6 drives the slider 4 to move, and the slider 4 causes the abutting block 821 and the support block 81 to clamp the bulge 101. Then, the slider 4 continues to move, so that the cutter head 52 cuts off the bulge 101, and the slider 4 then drives the cutter head 52 and the abutting block 821 away from the support block 81, and the abutting block 821 and the support block 81 release the clamping of the bulge 101, so that the bulge 101 can fall into the aggregate box 10. Then, the lifting drive source 91 drives the grinder 92 to approach the lower surface of the product 100, so that the grinder 92 grinds the area of ​​the product 100 where the bulge 101 is removed. Finally, the pressing driving source 74 releases the pressing on the top side of the product 100 , and the lifting driving source 91 drives the grinder 92 to eject the product 100 , thereby realizing the unloading of the product 100 .

[0043] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A punching jig, characterized in that: include: Connecting plate (1); A support seat (2), the support seat (2) being connected to the connecting plate (1); A support plate (3), the support plate (3) being connected to the support seat (2); A clamping assembly (7), the clamping assembly (7) being connected to the support seat (2), and the clamping assembly (7) being used to clamp and fix the product (100); A sliding block (4), the sliding block (4) being slidably connected to the supporting plate (3); A punching knife (5), wherein the punching knife (5) is connected to the slider (4); A punching drive source (6), the punching drive source (6) being connected to the connecting plate (1), the punching drive source (6) driving the slider (4) to move so that the punching knife (5) cuts the convex bulge (101) on the surface of the product (100).

2. A punching jig according to claim 1, characterized in that: The clamping assembly (7) comprises an X-axis positioning plate (71), a Y-axis positioning plate (72) and a Z-axis positioning plate (73); the X-axis positioning plate (71), the Y-axis positioning plate (72) and the Z-axis positioning plate (73) are all connected to the support seat (2); the X-axis positioning plate (71), the Y-axis positioning plate (72) and the Z-axis positioning plate (73) are all in contact with the product (100); the X-axis positioning plate (71) limits the X-axis direction of the product (100); the Y-axis positioning plate (72) limits the Y-axis direction of the product (100); and the Z-axis positioning plate (73) limits the Z-axis direction of the product (100).

3. A punching jig according to claim 1, characterized in that: The invention also comprises a clamping mechanism (8), wherein the clamping mechanism (8) comprises a supporting block (81) and a clamping assembly (82), wherein the supporting block (81) is connected to the clamping assembly (7), and the clamping assembly (82) is connected to the slider (4); the slider (4) drives the clamping assembly (82) to move, so that the clamping assembly (82) and the supporting block (81) clamp the convex bump (101) away from the surface of the product (100).

4. A punching jig according to claim 3, characterized in that: The pressing assembly (82) comprises a pressing block (821) and an elastic member (822); the pressing block (821) is slidably connected to the slider (4); and the elastic member (822) is respectively connected to the pressing block (821) and the slider (4).

5. A punching jig according to claim 4, characterized in that: The supporting block (81) and the pressing block (821) are both provided with a receiving groove (811), and the receiving groove (811) is used to receive the convex bump (101) of the product (100).

6. A punching tool according to claim 1, characterized in that: A trimming assembly (9) is provided on the support seat (2), and the trimming assembly (9) comprises a lifting drive source (91) and a grinder (92), wherein the lifting drive source (91) is connected to the connecting plate (1); the lifting drive source (91) drives the grinder (92) to move, and the grinder (92) grinds the area of ​​the product (100) after the convex hump (101) is cut off.

7. A punching jig according to claim 6, characterized in that: The clamping assembly (7) comprises a pressing drive source (74), the pressing drive source (74) being connected to the support seat (2), and the pressing drive source (74) pressing the top side of the product (100).

8. A punching jig according to claim 6, characterized in that: The lifting drive source (91) drives the grinder (92) to move and eject the product (100).

9. A punching jig according to claim 6, characterized in that: The bottom side of the connecting plate (1) is connected to a material collecting box (10); the connecting plate (1), the supporting plate (3) and the supporting seat (2) are all provided with a material dropping groove (31); the material dropping groove (31) is communicated with the material collecting box (10); the cut convex bumps (101) pass through the material dropping groove (31) and fall into the material collecting box (10).

10. The punching jig according to claim 1, characterized in that: The punching knife (5) comprises a knife seat (51) and a knife head (52); the knife seat (51) is detachably connected to the slider (4); and the knife head (52) is detachably connected to the knife seat (51).

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