CN219703231U - Continuous stamping die of secondary drawing - Google Patents

Abstract

The utility model discloses a secondary drawing continuous stamping die which comprises an upper die holder and a lower die holder, wherein an upper cushion block is fixedly connected to the top surface of the upper die holder, an upper supporting plate is fixedly connected to the top surface of the upper cushion block, an upper base plate is installed on the bottom surface of the upper die holder, an upper clamping block is fixedly connected to the bottom surface of the upper base plate, a stripper plate is movably connected to the bottom surface of the upper clamping block, and an upper forming assembly is arranged on the bottom surface of the stripper plate; the technical scheme is that a pre-stretching structure is added on the original method of composite trimming and drawing, and 5 pre-drawing, trimming, drawing and shaping processes are completed on the same step.

Description

A secondary drawing continuous stamping die

Technical field

The utility model relates to the field of manufacturing, specifically a secondary drawing continuous stamping die.

Background technique

Stamping molds are a commonly used process in modern manufacturing. According to the shape of the product, a specific forming mold is designed. Driven by external driving components and feeding components, the blank material directly forms the product shape after being punched, which greatly improves the product quality. production efficiency.

Traditional stamping dies have a trimming and stretching method to stamp products. Although the purpose of stamping can be achieved, most dies do not have a pre-drawing structure and cannot complete pre-drawing and drawing in the same process. Trimming, drawing, shaping and chamfering processes, some processes require reprocessing after the product is formed, which not only increases the production cost, but also prolongs the product processing time.

Utility model content

The purpose of this utility model is to provide a secondary drawing continuous stamping die to solve the problems raised in the above background technology. The utility model effectively solves the problem that the dimensional tolerance is difficult to guarantee when the drawing size of the product is high, and saves the cost of mold manufacturing. ,Increase productivity.

In order to achieve the above purpose, the present utility model provides the following technical solution: a secondary drawing continuous stamping die, including an upper die base and a lower die base, the top surface of the upper die base is fixedly connected with an upper pad, and the upper pad The top surface of the block is fixedly connected with an upper supporting plate, the bottom surface of the upper mold base is equipped with an upper pad, the bottom surface of the upper pad is fixedly connected with an upper clamping block, and the bottom surface of the upper clamping block is movably connected with a stripping plate. The bottom surface of the stripper plate is provided with an upper forming component;

The top surface of the lower mold base is fixedly connected to a lower pad, the top surface of the lower pad is connected to a lower template, the top surface of the lower template is provided with a lower molding assembly, and the bottom surface of the lower mold base is provided with an ejection assembly. A lower pad is fixedly connected to the bottom surface of the lower mold base.

Preferably, the upper forming assembly includes a stripper plate insert, which is fixedly installed on the bottom surface of the stripper plate, and a drawing die is installed on the inner wall of the stripper plate insert. An upper inner stripping plate is movably connected to the inner wall of the concave mold. Several guide pins are provided on the inner side of the upper inner stripping plate. Several ejector pins are provided on the inner side of the upper inner stripping plate. The guide pins and the ejector pins A punch is provided on the side.

Preferably, the lower molding assembly includes a lower stripping plate, which is fixedly connected to the top surface of the lower formwork. A lower die-cutting edge insert is installed on the inside of the lower stripping plate. The inner side wall of the lower die-cutting edge insert is A lower inner stripping plate is installed, a drawing punch is movably connected to the inner wall of the lower inner stripping plate, and a feeding rack is fixedly connected to the left wall of the lower template;

Several floating and dual-purpose pins are symmetrically installed on the top surface of the lower template, and workpiece materials are arranged between the floating and dual-purpose pins on both sides.

Preferably, two scrap cutting punches are fixedly connected to the right side wall of the upper clamping block, and two scrap cutting inserts are provided on the top surface of the lower template near the right side.

Preferably, the ejection assembly includes an ejector rod, which is movably connected to the bottom surface of the lower mold base. The top end of the ejector rod penetrates the lower mold base and is connected to the lower inner stripping plate. The bottom end of the ejector rod is fixedly connected with a striker. plate, and several nitrogen gas springs are fixedly connected to the bottom surface of the strike plate.

Preferably, the drawing punch has a stepped cross-section.

Compared with the existing technology, the beneficial effects of this utility model are:

1. This technical solution adds a pre-drawing structure to the original composite trimming and drawing method, and completes the five processes of pre-drawing, trimming, drawing, shaping and chamfering in the same process step;

2. This technical solution effectively solves the problem of difficult to ensure dimensional tolerance when the product is drawn to a high drawing size, saves mold manufacturing costs and improves production efficiency.

Description of drawings

Figure 1 is a schematic structural diagram of the mold opening of the present utility model;

Figure 2 is a schematic structural diagram of the closed membrane of the present utility model;

Figure 3 is a schematic structural diagram of the middle and upper molding assembly of the present utility model;

Figure 4 is a schematic structural diagram of the middle and lower molding components of the present utility model;

Figure 5 is a schematic diagram of the surface structure of the middle and lower templates of the present utility model;

Figure 6 is a schematic cross-sectional structural diagram of the utility model;

Figure 7 is a front view of the drawing punch of the utility model;

Figure 8 is a perspective view of the drawing punch of the utility model;

Figure 9 is an enlarged view of point A in Figure 6;

Figure 10 is an enlarged view of point B in Figure 6.

In the picture: 1. Upper supporting plate; 2. Upper pad; 3. Upper mold base; 4. Upper pad; 5. Upper clamping block; 6. Stripping plate; 7. Waste cutting punch; 8. Lower template ; 9. Lower pad; 10. Lower mold base; 11. Lower pad; 12. Upper inner stripping plate; 13. Drawing die; 14. Stripping plate insert; 15. Guide pin; 16. Top Material pin; 17. Feeding rack; 18. Drawing punch; 19. Lower inner stripping plate; 20. Lower die cutting edge insert; 21. Lower stripping plate; 22. Scrap cutting insert; 23. Floating dual-purpose Pin; 24. Workpiece material; 25. Punching punch; 26. Ejector; 27. Strike plate; 28. Nitrogen gas spring.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, not all implementations. example. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

Please refer to Figures 1 to 10. The present utility model provides a technical solution: a secondary drawing continuous stamping die, including an upper die base 3 and a lower die base 10. The top surface of the upper die base 3 is fixedly connected with an upper pad. 2. The upper supporting plate 1 is fixedly connected to the top surface of the upper cushion block 2, the upper supporting plate 4 is installed to the bottom surface of the upper mold base 3, the upper clamping block 5 is fixedly connected to the bottom surface of the upper supporting plate 4, and the upper clamping block 5 is movable connected to the bottom surface. The bottom surface of the material plate 6 and stripping plate 6 is provided with an upper molding component;

The top surface of the lower mold base 10 is fixedly connected with a lower pad 9, and the top surface of the lower pad 9 is connected with a lower template 8. The top surface of the lower template 8 is provided with a lower molding assembly, and the bottom surface of the lower mold base 10 is provided with an ejection assembly. The bottom surface of the seat 10 is fixedly connected with a lower pad 11. This technical solution adds a pre-drawing structure to the original composite trimming and stretching method, and completes pre-drawing, trimming, stretching and shaping in the same process step. There are also 5 processes for chamfering.

Referring to Figures 1 and 3, the upper forming assembly includes a stripper plate insert 14. The stripper plate insert 14 is fixedly installed on the bottom surface of the stripper plate 6. A drawing die 13 is installed on the inner wall of the stripper plate insert 14. An upper inner stripping plate 12 is movably connected to the inner wall of the extension die 13. Several guide pins 15 are provided on the inside of the upper inner stripping plate 12. Several ejector pins 16 are provided on the inner side of the upper inner stripping plate 12. The guide pins 15 and the ejector pins are A punch 25 is provided on the side of the material pin 16 .

Referring to Figures 1 and 4, the lower molding assembly includes a lower stripping plate 21, which is fixedly connected to the top surface of the lower template 8. A lower die-cutting edge insert 20 is installed on the inside of the lower stripping plate 21. The lower die-cutting edge insert 20 is installed on the inside of the lower stripping plate 21. A lower inner stripping plate 19 is installed on the inner wall, a drawing punch 18 is movably connected to the inner wall of the lower inner stripping plate 19, and a feeding rack 17 is fixedly connected to the left wall of the lower template 8;

Several floating and dual-purpose pins 23 are symmetrically installed on the top surface of the lower template 8, and a workpiece material 24 is provided between the floating and dual-purpose pins 23 on both sides.

Two scrap cutting punches 7 are fixedly connected to the right side wall of the upper clamping block 5, and two scrap cutting inserts 22 are provided on the top surface of the lower template 8 near the right side.

Referring to Figures 6 and 10, the ejection assembly includes an ejector rod 26. The ejector rod 26 is movably connected to the bottom surface of the lower mold base 10. The top of the ejector rod 26 penetrates the lower mold base 10 and is connected to the lower inner stripping plate 19. The bottom end of the ejector rod 26 is fixed. A strike plate 27 is connected, and a number of nitrogen springs 28 are fixedly connected to the bottom surface of the strike plate 27. This technical solution effectively solves the problem of difficulty in ensuring dimensional tolerance when the drawing size of the product is high, saves mold manufacturing costs, and improves production efficiency.

Referring to Figures 7 and 8, in this implementation, the cross section of the drawing punch 18 is arranged in a step shape, and the step of the drawing punch 18 is a groove to push out the product and play a certain role in chamfering and removing burrs.

Working principle: When this technical solution is used, the workpiece material 24 comes from the external feeder and is introduced into the mold through the feeding frame 17. The two sides of the material in the mold are guided by six upper and lower floating dual-purpose pins 23, and springs are installed below. The material can move up and down. When the punch start switch is pressed, the slider on the punch and the mold fixed on the upper slider move downward under the force of the punch. When the upper mold stripper plate 6 continues to move downward and contacts the workpiece material 24 Finally, the workpiece material 24 is pressed on the lower stripping plate 21, the punch continues to move downward, the drawing punch 18 of the upper die drawing die 13 and the lower die draws the product to a height, and then the punch slide continues to move toward Moving downward, the upper die draws the outer side of the concave die 13 and the lower die trimming insert 20 to cut a circular piece on the material belt to complete the trimming process;

The punch slide continues to move downward, and the upper die draws the outside of the die 13 and the drawing punch 18 of the lower die to draw the product into the shape of the final product, and the drawing punch 18 has a step to limit the flanging of the product. height, when the punch slider reaches the lower apex, the mold is in a closed state, and the product plays a shaping role under the force of the upper inner stripping plate 12 and the lower die drawing punch 18. When the punch slider reaches the lower apex, Moving upward, the groove on the lower inner stripping plate 19 pushes out the product and plays a certain role in chamfering and removing burrs. Finally, the product is driven by the workpiece material 24 and pushed out of the discharge hole in the mold. The scrap punch 7 and the scrap cutting insert 22 cut off the scrap.

Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art will understand that various changes and modifications can be made to these embodiments without departing from the principles and spirit of the present invention. , substitutions and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (6)

1. The utility model provides a continuous stamping die of secondary drawing, includes upper die base (3) and die holder (10), its characterized in that: the upper die comprises an upper die holder (3), an upper cushion block (2) is fixedly connected to the top surface of the upper die holder (3), an upper supporting plate (1) is fixedly connected to the top surface of the upper cushion block (2), an upper base plate (4) is installed on the bottom surface of the upper die holder (3), an upper clamping block (5) is fixedly connected to the bottom surface of the upper base plate (4), a stripping plate (6) is movably connected to the bottom surface of the upper clamping block (5), and an upper forming assembly is arranged on the bottom surface of the stripping plate (6);

the die comprises a die holder (10), a lower base plate (9) is fixedly connected to the top surface of the die holder (10), a lower die plate (8) is connected to the top surface of the lower base plate (9), a lower forming assembly is arranged on the top surface of the lower die plate (8), an ejection assembly is arranged on the bottom surface of the die holder (10), and a lower cushion block (11) is fixedly connected to the bottom surface of the die holder (10).

2. The continuous stamping die for secondary drawing according to claim 1, wherein: the upper molding assembly comprises a stripper plate insert (14), the stripper plate insert (14) is fixedly mounted on the bottom surface of a stripper plate (6), a drawing female die (13) is mounted on the inner side wall of the stripper plate insert (14), an upper inner stripper plate (12) is movably connected to the inner side wall of the drawing female die (13), a plurality of guide pins (15) are arranged on the inner side of the upper inner stripper plate (12), a plurality of ejector pins (16) are arranged on the inner side of the upper inner stripper plate (12), and punching punches (25) are arranged on the sides of the guide pins (15) and the ejector pins (16).

3. The continuous stamping die for secondary drawing according to claim 1, wherein: the lower molding assembly comprises a lower stripper plate (21), the lower stripper plate (21) is fixedly connected to the top surface of a lower template (8), a lower die trimming insert (20) is arranged on the inner side of the lower stripper plate (21), a lower inner stripper plate (19) is arranged on the inner side wall of the lower die trimming insert (20), a drawing punch (18) is movably connected to the inner wall of the lower inner stripper plate (19), and a feeding frame (17) is fixedly connected to the left side wall of the lower template (8);

the top surface of the lower template (8) is symmetrically provided with a plurality of buoyancy lift dual-purpose pins (23), and workpiece materials (24) are arranged between the buoyancy lift dual-purpose pins (23) at two sides.

4. The continuous stamping die for secondary drawing according to claim 1, wherein: the right side wall of the upper clamping block (5) is fixedly connected with two scrap cutting punches (7), and two scrap cutting inserts (22) are arranged on the top surface of the lower die plate (8) close to the right side.

5. The continuous stamping die for secondary drawing according to claim 1, wherein: the ejector assembly comprises an ejector rod (26), the ejector rod (26) is movably connected to the bottom surface of the lower die holder (10), the top end of the ejector rod (26) penetrates through the lower die holder (10) and is connected with the lower inner stripper plate (19), the bottom end of the ejector rod (26) is fixedly connected with a striking plate (27), and the bottom surface of the striking plate (27) is fixedly connected with a plurality of nitrogen springs (28).

6. A secondary drawing continuous stamping die as defined in claim 3, wherein: the section of the drawing punch head (18) is arranged in a step shape.