Punching structure of upper hinge progressive die

Abstract

The utility model provides a punching structure of an upper hinge progressive die, which relates to the technical field of progressive dies and comprises a lower die, an upper die and a punch. The lower die comprises a lower base plate, a supporting die plate, a transverse base plate and a lower die plate, the upper die comprises an upper die base and an upper fixing plate, the supporting die plate is vertically and fixedly arranged on the lower base plate, the transverse base plate is fixed to the supporting die plate, the lower die plate is fixed to the transverse base plate, the upper die base is arranged over the transverse base plate, and the upper fixing plate is fixed to the bottom of the upper die base. A hydraulic cylinder is fixed to the upper fixing plate, and a hydraulic rod of the hydraulic cylinder faces downwards and is fixedly connected with the punch. A first pneumatic cylinder and a second pneumatic cylinder are further arranged on the lower base plate, a first limiting plate is fixed to the first pneumatic cylinder, a second limiting plate is fixed to the second pneumatic cylinder, the first limiting plate and the second limiting plate can both upwards penetrate through the transverse base plate and penetrate out of the lower die plate, and the first limiting plate is perpendicular to the second limiting plate. The problems that the punching progress of an existing progressive die is reduced, and the product quality is affected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of progressive dies, and particularly relates to a punching structure of an upper hinge progressive die. Background Art

[0002] A progressive die refers to a cold stamping die that uses a strip-shaped stamping raw material and simultaneously completes multiple stamping processes at several different stations on a set of dies during one stamping stroke of a press. Each time the die completes a stamping, the strip is moved a fixed distance until the product is completed. When the existing hinges are processed, holes need to be punched. However, after some operations on the strip-shaped stamping raw material on the progressive die, the position will shift, the punching accuracy will decrease, and the quality of the product will be affected. Content of the Utility Model

[0003] Aiming at the deficiencies in the prior art, the utility model provides a punching structure of an upper hinge progressive die, which solves the problem that the punching progress of the existing progressive die decreases and affects the quality of the product.

[0004] To achieve the above object, the utility model adopts the following technical solutions:

[0005] A punching structure of an upper hinge progressive die includes: a lower die, an upper die and a punch;

[0006] The lower die includes a lower backing plate, a supporting template, a transverse backing plate and a lower template. The upper die includes an upper die base and an upper fixing plate. The supporting template is vertically and fixedly arranged on the lower backing plate. The transverse backing plate is fixed on the supporting template. The lower template is fixed on the transverse backing plate. The upper die base is arranged directly above the transverse backing plate. The upper fixing plate is fixed to the bottom of the upper die base. A hydraulic cylinder is fixed on the upper fixing plate. The hydraulic rod of the hydraulic cylinder extends downward and is fixedly connected to the punch;

[0007] A first air cylinder and a second air cylinder are further arranged on the lower backing plate. A first limiting plate is fixed on the first air cylinder. A second limiting plate is fixed on the second air cylinder. Both the first limiting plate and the second limiting plate can pass upward through the transverse backing plate and penetrate the lower template, and the first limiting plate is perpendicular to the second limiting plate.

[0008] Preferably, a transverse plate is fixedly connected to the lower end of the hydraulic rod. The punch is fixed to the bottom of the transverse plate. Inner rods are elastically arranged downward at both ends of the transverse plate. The lower ends of the inner rods are connected to a contact plate. When idle, the contact plate is located below the punch.

[0009] Preferably, lower fixing columns are fixedly connected to the bottoms of both ends of the transverse plate. The inner rods are vertically and slidably connected in the lower fixing columns, and springs are sleeved on the inner rods.

[0010] Preferably, a lower positioning cylinder is provided on the transverse backing plate, and a positioning rod that can be inserted into the lower positioning cylinder is correspondingly provided at the bottom of the upper die base.

[0011] Preferably, lower positioning cylinders are provided on both sides of the lower template on the transverse backing plate.

[0012] Preferably, the lower end of the positioning rod is spherical.

[0013] The utility model has the following beneficial effects:

[0014] By providing the first limiting plate and the second limiting plate, they can jointly act to limit the stamping raw material, avoid the displacement of the stamping raw material resulting in a decrease in precision, and improve the quality of the product.

[0015] Other advantages, objectives, and features of the utility model will be partially reflected by the following description, and partially will also be understood by those skilled in the art through the research and practice of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the product;

[0017] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 3 It is a partially sectional schematic diagram of the overall structure of the utility model.

[0019] In the above-mentioned drawings: 11, lower backing plate; 12, support template; 13, transverse backing plate; 131, lower positioning cylinder; 14, lower template; 21, upper die base; 211, positioning rod; 22, upper fixing plate; 3, punch; 4, hydraulic cylinder; 51, first pneumatic cylinder; 52, first limiting plate; 61, second pneumatic cylinder; 62, second limiting plate; 7, cross plate; 71, lower fixing column; 72, inner rod; 73, contact plate; 74, spring; DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] In order to make the technical means, creative features, achieved objectives, and functions of the utility model clearer and easier to understand, the technical solutions in the utility model will be further described below with reference to the drawings and embodiments.

[0021] Please refer to Figure 2 and Figure 3As shown in the figure, a punching structure of an upper hinge progressive die includes: a lower die, an upper die, and a punch 3; the lower die includes a lower backing plate 11, a support template 12, a cross backing plate 13, and a lower template 14, the upper die includes an upper die base 21 and an upper fixing plate 22, the support template 12 is vertically and fixedly arranged on the lower backing plate 11, the cross backing plate 13 is fixed on the support template 12, the lower template 14 is fixed on the cross backing plate 13, the upper die base 21 is arranged directly above the cross backing plate 13, the upper fixing plate 22 is fixed to the bottom of the upper die base 21, a hydraulic cylinder 4 is fixed on the upper fixing plate 22, and the hydraulic rod of the hydraulic cylinder 4 extends downward and is fixedly connected to the punch 3; a first air cylinder 51 and a second air cylinder 61 are further arranged on the lower backing plate 11, a first limit plate 52 is fixed on the first air cylinder 51, a second limit plate 62 is fixed on the second air cylinder 61, both the first limit plate 52 and the second limit plate 62 can pass upward through the cross backing plate 13 and pass through the lower template 14, and the first limit plate 52 is perpendicular to the second limit plate 62.

[0022] The support template 12 supports the cross backing plate 13. The cross backing plate 13 is used to fix the lower template 14. The lower template 14 is fixed on the cross backing plate 13 by hexagon socket head cap screws. The cross backing plate 13 is provided with a first through hole for the first limit plate 52 to pass through and a second through hole for the second limit plate 62 to pass through. Corresponding to the first through hole, the lower template 14 is provided with a first through-out hole, and corresponding to the second through hole, the lower template 14 is provided with a second through-out hole, facilitating the passing through of the first limit plate 52 and the second limit plate 62. As Figure 1 shown, it is a top view schematic diagram of the product. The first limit plate 52 and the second limit plate 62 jointly limit Figure 1 the upper right corner of Figure 1 . The hydraulic cylinder 4 drives the punch 3 to punch holes. The punch 3 is designed corresponding to the holes in the product in Figure 1 . A punch avoidance groove is arranged on the lower template 14 corresponding to the punching. The first limit plate 52 and the second limit plate 62 are arranged to prevent the stamping raw material from shifting and causing a decrease in accuracy, thereby improving the quality of the product.

[0023] Furthermore, as Figure 2 and Figure 3 shown, a cross plate 7 is fixedly connected to the lower end of the hydraulic rod. The punch 3 is fixed to the bottom of the cross plate 7. Elastic inner rods 72 are arranged downward at both ends of the cross plate 7. The lower ends of the inner rods 72 are connected to a contact plate 73. When idle, the contact plate 73 is located below the punch 3. When pressing down, the contact plate 73 first contacts the raw material, and as it moves downward, the elastic force causes the contact plate 73 to have a downward pressure, pressing the raw material tightly, ensuring that the raw material will not move due to the punching impact during punching, and improving the punching accuracy.

[0024] Furthermore, as Figure 1 and Figure 2As shown, it is the specific structure of the elastic connection. At both ends of the bottom of the cross plate 7, there are fixedly connected lower fixing columns 71. The inner rod 72 is vertically slidably connected in the lower fixing column 71, and a spring 74 is sleeved on the inner rod 72.

[0025] Furthermore, as Figure 2 and Figure 3 shown, to improve reliability, a lower positioning cylinder 131 is provided on the cross backing plate 13, and a positioning rod 211 that can be inserted into the lower positioning cylinder 131 is correspondingly arranged at the bottom of the upper die base 21. Before punching, the upper die base 21 first moves downward, so that the positioning rod 211 cooperates with the lower positioning cylinder 131, making the position of the punch 3 exactly above the punch avoidance groove of the lower template 14.

[0026] Furthermore, lower positioning cylinders 131 are arranged on both sides of the lower template 14 on the cross backing plate 13, making the device stable and reliable.

[0027] Furthermore, the lower end of the positioning rod 211 is spherical, which is convenient for the positioning rod 211 to extend into the lower positioning cylinder 131.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A punching structure of an upper hinge progressive die, characterized in that, Comprising: A lower die, an upper die and a punch (3); The lower die includes a lower backing plate (11), a support template (12), a transverse backing plate (13) and a lower template (14), the upper die includes an upper die base (21) and an upper fixing plate (22), the support template (12) is vertically and fixedly arranged on the lower backing plate (11), the transverse backing plate (13) is fixed on the support template (12), the lower template (14) is fixed on the transverse backing plate (13), the upper die base (21) is arranged directly above the transverse backing plate (13), the upper fixing plate (22) is fixed to the bottom of the upper die base (21), a hydraulic cylinder (4) is fixed on the upper fixing plate (22), and the hydraulic rod of the hydraulic cylinder (4) extends downward and is fixedly connected to the punch (3); A first air cylinder (51) and a second air cylinder (61) are further arranged on the lower backing plate (11), a first limiting plate (52) is fixed on the first air cylinder (51), a second limiting plate (62) is fixed on the second air cylinder (61), both the first limiting plate (52) and the second limiting plate (62) can pass upward through the transverse backing plate (13) and penetrate out of the lower template (14), and the first limiting plate (52) is perpendicular to the second limiting plate (62).

2. The punching structure of an upper hinge progressive die according to claim 1, characterized in that, The lower end of the hydraulic rod is fixedly connected to a transverse plate (7), the punch (3) is fixed to the bottom of the transverse plate (7), inner rods (72) are elastically arranged downward at both ends of the transverse plate (7), the lower ends of the inner rods (72) are connected to a contact plate (73), and when idle, the contact plate (73) is located below the punch (3).

3. The punching structure of an upper hinge progressive die according to claim 2, characterized in that, Lower fixing columns (71) are fixedly connected to the bottoms of both ends of the transverse plate (7), the inner rods (72) are vertically slidably connected in the lower fixing columns (71), and springs (74) are sleeved on the inner rods (72).

4. The punching structure of an upper hinge progressive die as described in claim 1, characterized in that, A lower positioning cylinder (131) is arranged on the transverse backing plate (13), and a positioning rod (211) that can be inserted into the lower positioning cylinder (131) is correspondingly arranged at the bottom of the upper die base (21).

5. The punching structure of an upper hinge progressive die according to claim 4, characterized in that, Lower positioning cylinders (131) are arranged on both sides of the lower template (14) on the transverse backing plate (13).

6. The punching structure of an upper hinge progressive die according to claim 4, characterized in that The lower end of the positioning rod (211) is spherical.

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