Movable bending forming die

Abstract

The utility model discloses a movable bending forming die which comprises a die handle, an upper die holder, an upper lining plate, a fixing plate, a lower die holder, a lower lining plate and a bending die, the die handle is arranged on the upper die holder, the upper die holder is connected with the upper lining plate, the upper lining plate is connected with the fixing plate, the bending die is arranged on the upper lining plate, the lower die holder is connected with the lower lining plate, and the lower lining plate is connected with the fixing plate. A die plate is arranged on the lower lining plate, a bending assembly is arranged on the die plate, and an elastic jacking assembly is arranged on the lower die base. Compared with a traditional die structure, the die has the advantages that a support product formed by the die is stable in size and accurate in positioning, and production and labor cost is saved. The mold structure is provided with more detachable parts, so that the mold is convenient to repair and maintain.

Description

Technical Field

[0001] The utility model belongs to the technical field of stamping and bending, and particularly relates to a movable bending and forming die. Background Art

[0002] The 354 bracket is a part used for a toggle switch, made of 0.5mm thick stainless steel 1Cr18Ni9. Its forming process is: blanking, first bending, and second bending forming. The second bending forming is the technical difficulty of this part. The positioning of the second bending die is unstable, and the semi-finished product after the first bending forming is unstable, resulting in uncertain positioning dimensions for the second bending. Due to the special structure of the product, when forming the second bending, the part is not easy to unload, time-consuming and laborious, and the product is unstable. Therefore, it is imperative to solve this technical problem, and a high-efficiency and high-quality production die for the 354 bracket is needed.

[0003] The patent document with the publication number CN212238911U discloses a die structure for one-time forming of a Z-shaped stamping part, including a Z-shaped stamping part, an upper template, a lower template, an inclined angle punch, an actuator, and a bending die. The Z-shaped stamping part includes an intermediate part, a first bending angle, and a second bending angle. The included angle of the inclined angle punch is equal to the second bending angle. The bending die includes a horizontal pressure-receiving surface, a vertical pressure-receiving surface, and a transverse pressure-receiving surface. The transverse pressure-receiving surface is connected to the horizontal pressure-receiving surface through the vertical pressure-receiving surface. The height of the vertical pressure-receiving surface is the same as the height of the intermediate part. The included angles between the vertical pressure-receiving surface and the horizontal pressure-receiving surface, and the transverse pressure-receiving surface are respectively equal to the first bending angle and the second bending angle. The inclined angle punch and the actuator are fixed in the upper template, and the bending die is correspondingly fixed in the lower template. The inclined angle punch uses a side-striking method to closely attach the Z-shaped stamping part to the horizontal pressure-receiving surface, the vertical pressure-receiving surface, and the transverse pressure-receiving surface respectively. However, the shape used for bending in this die structure is not suitable for bending the toggle switch bracket.

[0004] The patent document with the publication number CN214768329U discloses a die for secondary bending of a differential pressure sensor bracket. The punch Ⅰ and the punch Ⅱ are respectively fixed below the upper template, the die frame is fixed above the lower template, and the die holes Ⅰ and Ⅱ are opened on the die frame. The ejector core Ⅰ and the ejector core Ⅱ, the die insert Ⅰ and the die insert Ⅱ are respectively arranged in the die holes Ⅰ and Ⅱ so as to be movable up and down; one end below the punch Ⅰ is an upper inclined surface, and the upper inclined surface above the die insert Ⅰ is a matching upper inclined surface with the upper inclined surface below the punch Ⅰ, and the ejector core Ⅰ is located on one side of the die insert Ⅰ; the front and rear two edges of the lower surface of the punch Ⅱ are arc-shaped edges, two die inserts Ⅱ are provided and are respectively arranged on the front and rear sides in the die hole Ⅱ, and the ejector core Ⅱ is located between the two die inserts Ⅱ. However, this die structure is complex and not suitable for processing smaller toggle switch brackets. Summary of the Utility Model

[0005] To solve the above technical problems, the present utility model provides a movable bending forming die, which can solve the problem of forming multi-bending parts of the bracket type.

[0006] The present utility model is achieved through the following technical solutions.

[0007] A movable bending forming die provided by the present utility model includes a die shank, an upper die base, an upper backing plate, a fixing plate, a lower die base, a lower backing plate and a bending die. The die shank is arranged on the upper die base. The upper die base is connected to the upper backing plate. The upper backing plate is connected to the fixing plate. The bending die is arranged on the upper backing plate. The lower die base is connected to the lower backing plate. A template is arranged on the lower backing plate. A bending component is arranged on the template. A spring ejection component is arranged on the lower die base.

[0008] Preferably, a chute A is arranged on the template. The bending component includes a slide block insert, a slide block and a slide block stopper. One end of the slide block insert is connected to the slide block, and the other end of the slide block insert is a free end. The slide block is arranged in the chute A. The slide block stopper is arranged in the chute A at the end of the slide block away from the block insert.

[0009] Preferably, the spring ejection component includes a spring ejector backing plate, an elastic member A, a screw, a push rod and a push block. Two spring ejector backing plates are arranged. A screw is arranged between the two spring ejector backing plates. The screw penetrates through the elastic member A. One end of the push rod is connected to the spring ejector backing plate, and the other end of the push rod is connected to the push block.

[0010] Preferably, a limit post, a wedge and a chute B are arranged on the fixing plate. The bending die is slidably connected to the fixing plate through the chute B.

[0011] Preferably, a lower backing plate is arranged between the lower die base and the lower backing plate. A chute C is arranged on the lower die base. The push rod is slidably connected to the lower die base through the chute C, and the push rod penetrates through the lower backing plate.

[0012] Preferably, a chute D is arranged on the lower backing plate. The width of the chute D is the same as the width of the chute C. The push block is arranged in the chute C for sliding connection.

[0013] Preferably, an upper backing plate is arranged between the upper die base and the upper backing plate. A chute E is arranged on the upper die base. An elastic member B is arranged in the chute E. The elastic member B penetrates through the upper backing plate and then is connected to the bending die.

[0014] Preferably, a chute F and a positioning block are arranged on the slide block. An elastic member C is arranged in the chute F. An inclined surface is arranged on one side of the slide block.

[0015] Preferably, a die cavity insert is arranged on the template. A chute G is arranged on the die cavity insert. The width of the chute G is the same as the width of the chute D.

[0016] Preferably, a punch is provided at one end of the bending die. The punch is connected to the bending die through a connecting rod. The cross-section of the punch is rectangular. A chute H is provided on the upper liner plate, and the width of the chute H is greater than the width of the chute B.

[0017] The beneficial effects of the present utility model are as follows:

[0018] Compared with the structure of the traditional die, the die of the present utility model enables the formed bracket product to have stable dimensions, accurate positioning, and saves production and labor costs. The die structure has more detachable parts, which is convenient for die repair and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural view of the present utility model;

[0020] Figure 2 is a schematic structural view of the present utility model;

[0021] Figure 3 is a front view of the semi-finished bracket of the present utility model;

[0022] Figure 4 is a top view of the semi-finished bracket of the present utility model;

[0023] Figure 5 is a front view of the bracket of the present utility model;

[0024] Figure 6 is a left view of the bracket of the present utility model;

[0025] In the figure: 1 - die shank, 2 - upper die base, 3 - upper backing plate, 4 - upper liner plate, 5 - fixing plate, 6 - limit post, 7 - wedge, 8 - positioning block, 9 - block insert, 10 - slider, 11 - slider stop block, 12 - elastic member C, 13 - template, 14 - lower liner plate, 15 - lower backing plate, 16 - lower die base, 17 - ejector pad, 18 - elastic member A, 19 - screw, 20 - push rod, 21 - push block, 22 - die insert. 23 - bracket, 24 - bending die, 241 - punch, 242 - connecting rod, 25 - elastic member B, 26 - semi-finished bracket, 101 - chute A, 102 - chute B, 103 - chute C, 104 - chute D, 105 - chute E, 106 - chute F, 107 - chute G, 108 - chute H. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The technical solution of the present utility model will be further described below, but the scope of protection is not limited thereto.

[0027] Embodiment:

[0028] As Figures 1 to 6As shown in the figure, a movable bending and forming die includes a die shank 1, an upper die base 2, an upper liner 4, a fixing plate 5, a lower die base 16, a lower liner 14, and a bending die 24. The die shank 1 is arranged at the top of the upper die base 2 and is used to drive the upper die base 2 to move. The upper die base 2 is connected to the upper liner 4, the upper liner 4 is connected to the fixing plate 5, the bending die 24 is arranged on the upper liner 4, the lower die base 16 is connected to the lower liner 14, a template 13 is arranged on the lower liner 14, a bending component is arranged on the template 13, and two groups of bending components are provided. A spring ejection component is arranged on the lower die base 16. The die shank 1, the upper die base 2, the upper backing plate 3, the upper liner 4, the fixing plate 5, the bending die 24, and their connecting parts form the upper die; the template 13, the lower liner 14, the lower die base 16, the bending component, the spring ejection component, and their connecting parts form the lower die.

[0029] A chute A101 is arranged on the template 13. The bending component includes a slider insert 9, a slider 10, and a slider stop block 11. One end of the slider insert 9 is connected to the slider 10, and the other end of the slider insert 9 is a free end. The slider 10 is arranged in the chute A101, and the slider stop block 11 is arranged in the chute A101 at the end of the slider 10 away from the block insert 9.

[0030] The spring ejection component includes a spring ejector backing plate 17, an elastic member A18, a screw 19, a push rod 20, and a push block 21. Two spring ejector backing plates 17 are provided, and a screw 19 is arranged between the two spring ejector backing plates 17. The screw 19 penetrates through the elastic member A18. One end of the push rod 20 is connected to the spring ejector backing plate 17, and the other end of the push rod 20 is connected to the push block 21.

[0031] Limit posts 6, a wedge 7, and a chute B102 are arranged on the fixing plate 5. The bending die 24 is slidably connected to the fixing plate 5 through the chute B102. Two limit posts 6 and two wedges 7 are respectively arranged.

[0032] A lower backing plate 15 is arranged between the lower die base 16 and the lower liner 14. A chute C103 is arranged on the lower die base 16. The push rod 20 is slidably connected to the lower die base 16 through the chute C103, and the push rod 20 penetrates through the lower backing plate 15.

[0033] A chute D104 is arranged on the lower liner 14, and the width of the chute D104 is the same as the width of the chute C103. The push block 21 is placed in the chute C103 for sliding connection.

[0034] An upper backing plate 3 is arranged between the upper die base 2 and the upper liner 4. A chute E105 is arranged on the upper die base 2. An elastic member B25 is arranged in the chute E105. The elastic member B25 penetrates through the upper backing plate 3 and is then connected to the bending die 24.

[0035] A chute F106 and a positioning block 8 are provided on the slider 10. An elastic member C12 is provided in the chute F106. An inclined surface is provided on one side of the slider 10, and this inclined surface is correspondingly arranged with the inclined surface of the wedge 7.

[0036] A die insert 22 is provided on the template 13. A chute G107 is provided on the die insert 22, and the width of the chute G107 is the same as the width of the chute D104.

[0037] A punch 241 is provided at one end of the bending die 24. The punch 241 is connected to the bending die 24 through a connecting rod 242. The cross-section of the punch 241 is rectangular. The punch 241 can extend into the chute G107 and is used for bending the bracket semi-finished product 26. A chute H108 is provided on the upper lining plate 4. The width of the chute H108 is greater than the width of the chute B102. The chute H108 slides in the chute B102. The cross-section of the other end of the bending die 24 is T-shaped, and this setting can prevent the bending die 24 from disengaging from the chute H108.

[0038] The working principle of the present utility model is as follows:

[0039] First, after installing the die of the present utility model on a stamping machine tool and debugging it, place the bracket semi-finished product 26 between the two positioning blocks 8 for positioning;

[0040] Second, step on the pedal on the press to make the upper die move downward, and the upper die and the lower die are correctly closed. This process can be divided into two stages: when the die is in the open die state, under the action of the elastic member A18, the top of the push block 21 is flush with the top of the slider insert 9. When the upper die moves downward, the bending die 24 and the push block 21 first tightly press the bracket semi-finished product 26 to ensure that the bracket semi-finished product 26 does not move during the forming process and ensure the stability of the forming dimensions. The upper die continues to move downward, and the elastic member B25 connected to the bending die 24 is compressed until the bending die 24 contacts the upper backing plate 3. At the same time, the limit post 6 contacts the template 13 to play a limiting role. The bending die 24 and the die insert 22 form the lower structure of the bracket 23. At the same time, the wedge 7 acts on the slider 10 under the guidance of the slider stop block 11. The slider 10 compresses the elastic member C12, causing the slider insert 9 to move towards the middle of the die insert 22. Among them, the slider insert 9 forms a convex die for secondary bending of the bracket semi-finished product 26, and the bending die 24 forms a concave die for secondary bending of the bracket semi-finished product 26 to form the upper structure of the bracket 23. After the bending is completed, make the upper die move upward. When the upper die moves upward, the wedge 7 no longer acts on the slider 10, and the elastic member C12 resumes elongation to drive the slider 10 to reset. The slider insert 9 moves outwards to both sides and is flush with the opening of the chute G107. The elastic member A18 resets and resumes elongation, pushing the push block 21 upward until its top is flush with the top of the slider insert 9 and pushing the bracket 23 out of the lower die base 16. At the same time, the elastic member B25 resets, and the bending die 24 moves out of the lower die base 16 later, and the bracket 23 is taken out to complete the processing.

[0041] The bracket 23 can be a 354 bracket made of stainless steel 1Cr18Ni9 material with a thickness of 0.5 mm.

Claims

1. A movable bending forming die, characterized in that: The invention comprises a die handle (1), an upper die base (2), an upper lining plate (4), a fixed plate (5), a lower die base (16), a lower lining plate (14) and a bending die (24), wherein the die handle (1) is arranged on the upper die base (2), the upper die base (2) is connected to the upper lining plate (4), the upper lining plate (4) is connected to the fixed plate (5), the bending die (24) is arranged on the upper lining plate (4), the lower die base (16) is connected to the lower lining plate (14), a template (13) is arranged on the lower lining plate (14), and the template (13) is provided on the upper lining plate (4). ), a bending assembly is arranged on the lower die base (16), and a pop-up assembly is arranged on the lower die base (16), the pop-up assembly comprises a pop-up device pad (17), an elastic member A (18), a screw (19), a push rod (20) and a push block (21), two pop-up device pads (17) are arranged, a screw (19) is arranged between the two pop-up device pads (17), and the screw (19) passes through the elastic member A (18), one end of the push rod (20) is connected to the pop-up device pad (17), and the other end of the push rod (20) is connected to the push block (21).

2. A movable bending forming die according to claim 1, characterized in that: A slide groove A (101) is arranged on the template (13), and the bending assembly comprises a slider insert (9), a slider (10) and a slider stopper (11), one end of the slider insert (9) is connected to the slider (10), and the other end of the slider insert (9) is a free end, the slider (10) is arranged in the slide groove A (101), and the slider stopper (11) is arranged in the slide groove A (101) at one end of the slider (10) away from the block insert (9).

3. The movable bending forming die according to claim 1, characterized in that: The fixed plate (5) is provided with a limiting column (6), an inclined wedge (7) and a slide groove B (102), and the bending die (24) is slidably connected to the fixed plate (5) via the slide groove B (102).

4. The movable bending forming die according to claim 1, characterized in that: A lower pad (15) is arranged between the lower die seat (16) and the lower lining plate (14), a slide groove C (103) is arranged on the lower die seat (16), a push rod (20) is slidably connected to the lower die seat (16) through the slide groove C (103), and the push rod (20) passes through the lower pad (15).

5. The movable bending forming die according to claim 1, characterized in that: A slide groove D (104) is provided on the lower lining plate (14), the width of the slide groove D (104) is the same as the width of the slide groove C (103), and the push block (21) is placed in the slide groove C (103) for sliding connection.

6. The movable bending forming die according to claim 1, characterized in that: An upper pad (3) is arranged between the upper die seat (2) and the upper lining plate (4), a slide groove E (105) is arranged on the upper die seat (2), an elastic member B (25) is arranged in the slide groove E (105), and the elastic member B (25) passes through the upper pad (3) and is connected to the bending die (24).

7. The movable bending forming die according to claim 2, characterized in that: A slide groove F (106) and a positioning block (8) are provided on the slide block (10), an elastic member C (12) is provided in the slide groove F (106), and an inclined surface is provided on one side of the slide block (10).

8. The movable bending forming die according to claim 1, characterized in that: A die insert (22) is arranged on the template (13), a slide groove G (107) is arranged on the die insert (22), and the width of the slide groove G (107) is the same as the width of the slide groove D (104).

9. The movable bending forming die according to claim 1, characterized in that: A punch (241) is provided at one end of the bending die (24), and the punch (241) is connected to the bending die (24) via a connecting rod (242). The cross section of the punch (241) is rectangular. A slide groove H (108) is provided on the upper lining plate (4), and the width of the slide groove H (108) is greater than the width of the slide groove B (102).

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