An oblique push bending stamping die

Abstract

The present invention discloses an oblique push type bending stamping die, which comprises: an upper die mechanism, which comprises an upper die seat, a stop plate, an upper stripping plate, an upper stripping plate pressing block and an upper die insert, wherein the stop plate is arranged below the upper die seat, the upper stripping plate is connected below the stop plate, the upper stripping plate pressing block is connected to the bottom surface of the stop plate, and the upper stripping plate pressing block is located at one end of the upper stripping plate, the upper stripping plate pressing block has a first inclined surface, the upper die insert is connected to the upper die seat, the upper die insert is located near one end of the upper stripping plate pressing block, and the upper die insert has a second inclined surface; a lower die mechanism, which comprises a lower pad and a lower template arranged on the lower pad, the product is placed on the lower template, the lower pad is provided with a guide block, the guide block is provided with a third inclined surface, and the guide block is slidably connected to a side push slider. The present invention can change the angle of the side push slider, which can not only make up for the product appearance problem caused by the previous push flat structure, but also effectively reduce the lateral force during the forming process, thereby solving the problem of product surface scratches.

Description

Technical Field

[0001] The invention belongs to the technical field of stamping dies, and in particular relates to an oblique-push bending stamping die. Background Art

[0002] In precision sheet metal stamping die technology, a 90° inward bend is achieved using a side-push bending mechanism. When stamping parts require extremely high aesthetics, the existing push-flat mechanism's slider movement is parallel to the part's bending direction, making it difficult to address scratches that may occur during the forming process. Summary of the Invention

[0003] The present invention provides an oblique push bending stamping die, which can change the angle of the side push slider, which can not only make up for the product appearance problems caused by the previous flattening structure, but also effectively reduce the lateral force during the forming process, thereby solving the problem of product surface scratches.

[0004] In order to achieve the above object, the present invention provides an oblique push type bending stamping die, which comprises:

[0005] An upper die mechanism comprises an upper die base, a stop plate, an upper stripping plate, an upper stripping plate pressing block and an upper die insert, wherein the stop plate is arranged below the upper die base, the upper stripping plate is connected below the stop plate, the upper stripping plate pressing block is connected to the bottom surface of the stop plate, and the upper stripping plate pressing block is located at one end of the upper stripping plate, the upper stripping plate pressing block has a first inclined surface, the upper die insert is connected to the upper die base, the upper die insert is located near one end of the upper stripping plate pressing block, and the upper die insert has a second inclined surface;

[0006] The lower mold mechanism includes a lower pad and a lower template arranged on the lower pad, the product is placed on the lower template, the lower pad is provided with a guide block, the guide block is provided with a third inclined surface, the guide block is slidably connected to a side push slider, the bottom of the side push slider is provided with a fourth inclined surface matching the third inclined surface, one side of the side push slider is provided with a forming surface, the other side of the side push slider is provided with a fifth inclined surface matching the second inclined surface, the top of the side push slider is provided with a sixth inclined surface matching the first inclined surface, and a limiting component is provided at the end of the side push slider away from the product.

[0007] As a further description of the above technical solution:

[0008] The limiting component includes a limiting block, a stopper, a first spring and a driving screw. The stopper is connected to the lower pad. The limiting block is located at one end of the stopper close to the side push slider. One end of the driving screw passes through the stopper. The limiting block is connected to the side push slider. The first spring is sleeved on the driving screw. One end of the first spring is connected to the side of the stopper.

[0009] As a further description of the above technical solution:

[0010] The included angle between the third inclined plane and the horizontal plane is 4°-8°.

[0011] As a further description of the above technical solution:

[0012] A push block is provided on the side push slider, and a lifting component is provided at a position of the lower template corresponding to the push block. The lifting component is arranged in the installation cavity of the lower template, and a first inlet and outlet and a second inlet and outlet are provided on the installation cavity. The first inlet and outlet are located below the product, and the second inlet and outlet are opposite to the push block.

[0013] As a further description of the above technical solution:

[0014] The lifting component includes a first slider, a second slider, a second spring, and a third spring. The first slider is arranged horizontally, one end of the first slider is connected to the second spring, and the other end of the second spring is connected to the cavity wall of the installation cavity. The second slider is located above the first slider and is arranged vertically, one end of the second slider is connected to the third spring, and the other end of the third spring is connected to the support block.

[0015] As a further description of the above technical solution:

[0016] Limiting grooves are respectively provided on both sides of the second sliding block, and limiting rollers are provided in the limiting grooves. The limiting rollers are connected to the cavity wall of the installation cavity through connecting rods.

[0017] As a further description of the above technical solution:

[0018] The upper die mechanism further comprises an upper clamping plate, and the upper clamping plate is connected to the upper die base via a fourth spring.

[0019] As a further description of the above technical solution:

[0020] The lower die mechanism further comprises a lower die base, a lower pad and a lower supporting plate, wherein the lower die base is connected below the lower pad, the lower pad is connected below the lower die base, and the lower supporting plate is connected below the lower pad.

[0021] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0022] 1. In this invention, as the punch press moves downward, the upper die stripper plate first moves downward until it compresses the product. The upper die insert continues downward, contacting the inclined surface of the side push slider. At this point, the side push slider begins to move inward toward the product. Driven by the guide block, the slider's movement forms a 5° angle with the product's bending direction. This causes the slider to first contact the product's bent end, significantly reducing the lateral bending force compared to conventional methods where the slider's movement direction is parallel to the product's bending direction. As the slider continues to move inward, the 5° inclination prevents it from rubbing against the product surface throughout its movement, effectively preventing scratches on the exterior surface. When the slider's movement ends, the product completes its 90° inward bend.

[0023] 2. In the present invention, the jacking components and push blocks are provided to provide an upward jacking force, which can keep the product in closer contact with the side push slider during mold closing and bending, thereby improving the bending effect of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 This is a structural schematic diagram of an oblique push bending stamping die.

[0026] Figure 2 This is a schematic diagram of the mold closing state of an oblique push bending stamping mold.

[0027] Figure 3 for Figure 1 Enlarged view of part A in the middle.

[0028] Figure 4 for Figure 3 Enlarged view of part B in the middle.

[0029] Legend:

[0030] 1. Upper die base; 2. Stop plate; 3. Upper stripping plate; 4. Upper stripping plate pressure block; 41. First inclined surface; 5. Upper die insert; 51. Second inclined surface; 6. Lower pad; 7. Lower template; 8. Guide block; 9. Side push slider; 91. Fourth inclined surface; 92. Forming surface; 93. Fifth inclined surface; 94. Sixth inclined surface; 95. Push block; 10. Product; 11. Limit block; 12. Stop block; 13. First spring; 14. Plug screw; 15. Mounting cavity; 16. First slider; 17. Second slider; 18. Second spring; 19. Third spring; 20. Support block; 21. Limit groove; 22. Limit groove; 23. Limit roller; 24. Upper splint; 25. Fourth spring; 26. Lower die base; 27. Lower pad; 28. Lower support plate. DETAILED DESCRIPTION

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of 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. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition or explanation in subsequent drawings.

[0034] In the description of the embodiments of the present invention, it should be noted that the terms "upper" and "inner" etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are orientations or positional relationships in which the inventive product is usually placed when in use. These are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0035] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0036] See also Figure 1-4 The present invention provides an oblique push bending stamping die, comprising an upper die mechanism, which includes an upper die base 1, a stop plate 2, an upper stripping plate 3, an upper stripping pressing block 4 and an upper die insert 5, wherein the stop plate 2 is arranged below the upper die base 1, the upper stripping plate 3 is connected to the bottom of the stop plate 2, and the upper stripping pressing block 4 is located at one end of the upper stripping plate 3, and the upper stripping pressing block 4 has a first inclined surface 41, the upper die insert 5 is connected to the upper die base 1, the upper die insert 5 is located near one end of the upper stripping pressing block 4, and the upper die insert 5 has a second inclined surface 51;

[0037] The lower mold mechanism includes a lower pad 6 and a lower template 7 arranged on the lower pad 6, and the product 10 is placed on the lower template 7. The lower pad 6 is provided with a guide block 8, and the guide block 8 is provided with a third inclined surface 81. The guide block 8 is slidably connected to the side push slider 9, and the bottom of the side push slider 9 is provided with a fourth inclined surface 91 matching the third inclined surface 81. A molding surface 92 is provided on one side of the side push slider 9, and a fifth inclined surface 93 matching the second inclined surface 51 is provided on the other side of the side push slider 9. The top of the side push slider 9 is provided with a sixth inclined surface 94 matching the first inclined surface 41, and a limiting component is provided at the end of the side push slider 9 away from the product 10.

[0038] The limiting component includes a limiting block 11, a stopper 12, a first spring 13, and a plug screw 14. The stopper 12 is connected to the lower plate 6. The limiting block 11 is located at one end of the stopper 12 close to the side push slider 9. One end of the plug screw 14 passes through the stopper 12 and is connected to the side push slider 9. The first spring 13 is sleeved on the plug screw 14, and one end of the first spring 13 is connected to the side of the stopper 12. This can achieve the reset of the side push slider and improve work efficiency.

[0039] The angle between the third inclined surface 81 and the horizontal plane is 4°-8°. Specifically, the angle between the three inclined surfaces 81 and the horizontal plane is an acute angle, which can be 5°, 6°, 6.1°, 6.2°, etc. This allows the slider to contact the bent end of the product first, significantly reducing the lateral bending force compared to the conventional method of contacting the bend root first.

[0040] The side push slider 9 is provided with a push block 95, and the lower mold plate 7 is provided with a lifting component at a position corresponding to the push block 95. The lifting component is arranged in the installation cavity 15 of the lower mold plate 7. The installation cavity 15 is provided with a first inlet and a second inlet. The first inlet and the second inlet are located below the product 10, and the second inlet and the second inlet are directly opposite the push block 95. This can provide an upward lifting force, so that the product can always be in closer contact with the side push slider during mold closing and bending, thereby improving the product bending effect.

[0041] The lifting component includes a first slider 16, a second slider 17, a second spring 18, and a third spring 19. The first slider 16 is arranged horizontally, with one end of the first slider 16 connected to the second spring 18, and the other end of the second spring 18 connected to the cavity wall of the mounting cavity 15. The second slider 17 is located above the first slider 16 and arranged vertically, with one end of the second slider 17 connected to the third spring 19, and the other end of the third spring 19 connected to the support block 20. When the mold is closed and bent, the push block enters the mounting cavity from the second inlet and outlet, pushing the first slider to move, thereby pushing the second slider upward, so that the support block contacts the product, thereby improving the quality of the product bending.

[0042] Limiting grooves 21 are respectively provided on both sides of the second slider 17. Limiting rollers 23 are provided in the limiting grooves 22. The limiting rollers 23 are connected to the cavity wall of the mounting cavity 15 via connecting rods, so as to limit the moving distance of the second slider.

[0043] The upper die mechanism further includes an upper clamping plate 24 , which is connected to the upper die base 1 via a fourth spring 25 .

[0044] The lower die mechanism further includes a lower die base 26 , a lower pad 27 and a lower supporting plate 28 . The lower die base 26 is connected below the lower pad 6 , the lower pad 27 is connected below the lower die base 26 , and the lower supporting plate 28 is connected below the lower pad 27 .

[0045] Working principle: When the punch press moves downward, the upper stripping plate first presses the product, the fourth spring begins to compress, and then the upper die seat continues to move downward. When the upper die insert contacts the inclined surface of the side push slider, the slider begins to move toward the inside of the product along the direction of the guide block. When the side push slider contacts the product, the product begins to fold inward, and finally the side push slider completes the movement and completes the 90° inward bend. After the work content is completed, the punch press moves upward. At this time, the upper die insert moves upward, and the side push slider retreats under the action of the first spring. The side push slider detaches from the product and retreats to the bottom. The upper stripping plate begins to move upward, and the product is lifted up by the lower die pin to complete the stripping. The above movement process constitutes a bending and stamping work cycle, completing the one-time forming and stripping of the product. Therefore, the present invention effectively solves the abrasion problem that occurs during the side push forming process and significantly reduces the bending lateral force by changing the angle of the side push slider (the slider forming direction and the bending direction form a 5° angle), and the effect is remarkable in actual application.

[0046] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An oblique push bending stamping die, characterized in that: include: An upper die mechanism, comprising an upper die base (1), a stop plate (2), an upper stripping plate (3), an upper stripping pressing block (4) and an upper die insert (5), wherein the stop plate (2) is arranged below the upper die base (1), the upper stripping plate (3) is connected below the stop plate (2), the upper stripping pressing block (4) is connected to the bottom surface of the stop plate (2), and the upper stripping pressing block (4) is located at one end of the upper stripping plate (3), and the upper stripping pressing block (4) has a first inclined surface (41), the upper die insert (5) is connected to the upper die base (1), the upper die insert (5) is located near one end of the upper stripping pressing block (4), and the upper die insert (5) has a second inclined surface (51); A lower mold mechanism comprises a lower pad (6) and a lower template (7) arranged on the lower pad (6), a product (10) is placed on the lower template (7), a guide block (8) is provided on the lower pad (6), a third inclined surface (81) is provided on the guide block (8), a side push slider (9) is slidably connected to the guide block (8), a fourth inclined surface (91) matching the third inclined surface (81) is provided at the bottom of the side push slider (9), a molding surface (92) is provided on one side of the side push slider (9), a fifth inclined surface (93) matching the second inclined surface (51) is provided on the other side of the side push slider (9), a sixth inclined surface (94) matching the first inclined surface (41) is provided on the top of the side push slider (9), and a limiting component is provided at one end of the side push slider (9) away from the product (10); A push block (95) is provided on the side push slider (9), and a lifting component is provided on the lower template (7) at a position corresponding to the push block (95). The lifting component is arranged in the installation cavity (15) of the lower template (7), and a first inlet and outlet and a second inlet and outlet are provided on the installation cavity (15). The first inlet and outlet are located below the product (10), and the second inlet and outlet are directly opposite to the push block (95).

2. The oblique push bending stamping die according to claim 1, characterized in that: The limiting component includes a limiting block (11), a stopper (12), a first spring (13) and a plug screw (14); the stopper (12) is connected to the lower pad (6); the limiting block (11) is located at one end of the stopper (12) close to the side push slider (9); one end of the plug screw (14) passes through the stopper (12); the limiting block (11) is connected to the side push slider (9); the first spring (13) is sleeved on the plug screw (14); and one end of the first spring (13) is connected to the side of the stopper (12).

3. The oblique push bending stamping die according to claim 1, characterized in that: The included angle between the third inclined surface (81) and the horizontal plane is 4°-8°.

4. The oblique push bending stamping die according to claim 1, characterized in that: The lifting component includes a first slider (16), a second slider (17), a second spring (18), and a third spring (19), wherein the first slider (16) is arranged horizontally, one end of the first slider (16) is connected to the second spring (18), and the other end of the second spring (18) is connected to the cavity wall of the installation cavity (15), the second slider (17) is located above the first slider (16) and is arranged vertically, one end of the second slider (17) is connected to the third spring (19), and the other end of the third spring (19) is connected to the support block (20).

5. The oblique push bending stamping die according to claim 4, characterized in that: Limiting grooves (21) are respectively provided on both sides of the second sliding block (17), and limiting rollers (23) are provided in the limiting grooves (21). The limiting rollers (23) are connected to the cavity wall of the installation cavity (15) via a connecting rod.

6. The oblique push bending stamping die according to claim 1, characterized in that: The upper die mechanism further comprises an upper clamping plate (24), and the upper clamping plate (24) is connected to the upper die base (1) via a fourth spring (25).

7. The oblique push bending stamping die according to claim 1, characterized in that: The lower die mechanism further comprises a lower die base (26), a lower pad (27) and a lower supporting plate (28), wherein the lower die base (26) is connected below the lower pad (6), the lower pad (27) is connected below the lower die base (26), and the lower supporting plate (28) is connected below the lower pad (27).

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