Drawing die for cooker chassis

Abstract

The utility model discloses a kitchen range base plate drawing die which comprises an upper die base, a female die fixing plate, a female die plate, an inner pusher, a male die, a male die base plate, a material pressing plate, a material pressing base plate, a male die fixing plate and a lower die base, the inner pusher is fixedly connected to the female die plate, and the female die plate is fixed to the upper die base through the female die fixing plate; the male die is fixedly connected to a male die fixing plate through a male die base plate, and the male die fixing plate is fixed to the lower die base. The inner pusher and the male die are correspondingly arranged in a matched mode, a material pressing base plate is fixedly arranged on the male die fixing plate, and a material pressing plate is fixedly arranged on the material pressing base plate. And a guide piece for guiding mold closing is arranged between the upper mold base and the lower mold base. According to the die, the die assembly distance between the inner pusher and the male die is effectively controlled through the material pressing base plate and the material pressing plate, and excessive product extrusion by the die is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping dies, in particular to a drawing die for a stove chassis. Background Art

[0002] Stamping is a process method of mechanical processing. It uses a press to apply pressure to the metal blank through a die to cause it to undergo plastic deformation, thereby obtaining parts with a certain shape, size and rib grooves. It is one of the important processing methods in mechanical manufacturing.

[0003] The drawing die is one of the most common forming dies in stamping dies. It is generally placed between the die and the punch. After the die presses the punch, the blank is pressed, and then the blank is drawn in the die and deformed.

[0004] However, with existing drawing dies, the blanking force gradually increases as the die moves toward the punch, making it difficult to increase the volume of the blank within the die. This leads to wrinkles in the finished part due to insufficient deformation volume during drawing. This is especially true for complex structures like stove chassis that require a smooth surface. This can lead to production line downtime to re-adjust the die or manual repairs to the stove chassis, which wastes time and can be difficult to guarantee the quality of these repairs. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the utility model provides a drawing die for a stove chassis.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A drawing die for a stove chassis, comprising an upper die base, a die fixing plate, a die plate, an inner pusher, a punch, a punch pad, a pressure plate, a pressure pad, a punch fixing plate and a lower die base, wherein the inner pusher is fixedly connected to the die plate, and the die plate is fixed to the upper die base via the die fixing plate; the punch is fixedly connected to the punch fixing plate via the punch pad, and the punch fixing plate is fixed to the lower die base; the inner pusher and the punch are arranged in corresponding matching manner, a pressure pad is fixedly provided on the punch fixing plate, and a pressure plate is fixedly provided on the pressure pad; a guide member for guiding the mold closing is provided between the upper die base and the lower die base.

[0008] Preferably, the guide member includes a guide column and a guide sleeve, the guide column is fixedly connected to the upper mold base, the guide sleeve is fixedly connected to the lower mold base, the guide column is slidably inserted into the guide sleeve, and the lower mold base is provided with a movable groove for sliding the guide column, and the movable groove is communicated with the guide sleeve.

[0009] Preferably, a top plate is connected to the bottom of the pressing pad via a push rod, and the top plate is located above the lower supporting plate.

[0010] Preferably, the guide sleeve is provided with a guide hole for sliding engagement with the guide post, the guide hole is coaxially connected to the movable groove, and the aperture of the movable groove is larger than the aperture of the guide hole.

[0011] Preferably, the mold also includes a positioning column, which is fixed on the lower mold base. The concave mold fixing plate, concave mold plate, pressure plate, pressure pad and punch fixing plate are all provided with positioning holes that cooperate with the positioning column, and the positioning column is arranged in the positioning hole.

[0012] Preferably, the inner pusher and the punch are both provided with a plurality of exhaust holes.

[0013] The beneficial effects of the utility model are as follows:

[0014] The utility model mold effectively controls the mold spacing between the inner push and the punch by setting the pressure pad and the pressure plate, thereby avoiding excessive extrusion of the product by the mold; the pressure pad is connected to a top by a push rod below, which effectively reduces the degree of bending deformation of the pressure pad during operation, thereby improving the deep drawing quality of the workpiece and extending the service life of the pressure pad. In addition, the design of the top plate can also prevent the workpiece from deforming during the deep drawing process. During the deep drawing process, the flange part of the blank generates tensile stress in the radial direction and compressive stress in the tangential direction due to the action of the drawing force, resulting in plastic deformation of the material. The top plate ensures that the workpiece maintains a stable shape during the deep drawing process through its supporting effect, avoiding deformation caused by stress concentration. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of an embodiment of the utility model;

[0016] Figure 2 This is a schematic diagram of the upper die base structure of an embodiment of the utility model;

[0017] Figure 3 This is a schematic structural diagram of the die fixing plate according to an embodiment of the present utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the concave template according to an embodiment of the utility model;

[0019] Figure 5 This is a schematic diagram of the internal push structure of an embodiment of the utility model;

[0020] Figure 6 This is a schematic diagram of the punch structure of an embodiment of the utility model;

[0021] Figure 7 This is a schematic diagram of the structure of the punch pad in an embodiment of the utility model;

[0022] Figure 8 This is a schematic structural diagram of the press plate according to an embodiment of the present utility model;

[0023] Figure 9 This is a schematic structural diagram of a press pad according to an embodiment of the present utility model;

[0024] Figure 10 This is a schematic diagram of the top plate structure of an embodiment of the utility model;

[0025] Figure 11 This is a schematic diagram of the chassis structure of a stove according to an embodiment of the present utility model;

[0026] Among them, 1-upper supporting plate, 2-upper die foot, 3-upper die base, 4-die fixing plate, 5-die plate, 6-inner push, 7-punch, 8-punch pad, 9-pressing plate, 10-pressing pad, 11-punch fixing plate, 12-lower die base, 13-top plate, 14-lower die foot, 15-lower supporting plate, 16-limiting column, 17-guide column, 18-guide sleeve. DETAILED DESCRIPTION

[0027] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0028] like Figures 1 to 10 As shown, a drawing die for a stove chassis comprises an upper supporting plate 1, an upper die foot 2, an upper die base 3, a die fixing plate 4, a die plate 5, an inner pusher 6, a punch 7, a punch pad 8, a pressure plate 9, a pressure pad 10, a punch fixing plate 11, a lower die base 12, a lower die foot 14 and a lower supporting plate 15. The upper die base 3 is fixed to the lower surface of the upper supporting plate 1 through the upper die foot 2; the inner pusher 6 is fixedly connected to the lower surface of the die plate 5, the upper surface of the die plate 5 is connected to the lower surface of the die fixing plate 4, and the upper surface of the die fixing plate 4 is fixedly connected to the lower surface of the upper die base 3; the lower surface of the punch 7 is fixedly set on the upper surface of the punch pad 8, the lower surface of the punch pad 8 is fixedly connected to the upper surface of the punch fixing plate 11, and the punch fixing plate 11 is fixed to the upper surface of the lower die base 12 On the top; the inner push 6 and the punch 7 are arranged in corresponding matching positions, the upper surface of the punch fixing plate 11 is fixedly provided with a pressure pad 10, and the upper surface of the pressure pad 10 is fixedly provided with a pressure plate 9. When working, the pressure plate 9 is contacted and limited with the concave template 5 to effectively control the mold closing distance between the inner push 6 and the punch 7 to avoid excessive extrusion of the product by the mold; the lower mold base 12 is fixed to the upper surface of the lower support plate 15 through the lower mold foot 14; a guide part for mold closing guidance is provided between the upper mold base 3 and the lower mold base 12, and the guide part includes a guide post 17 and a guide sleeve 18, the guide post 17 is fixedly connected to the upper mold base 3, and the guide sleeve 18 is fixedly connected to the lower mold base 12, the guide post 17 is slidably penetrated on the guide sleeve 18, and the lower mold base 12 is provided with a movable groove for sliding of the guide post, and the movable groove is communicated with the guide sleeve 18.

[0029] The top plate 13 is connected to the bottom of the pressure pad 10 through a push rod. The top plate 13 is located above the lower support plate 15, which effectively reduces the degree of bending deformation of the pressure pad 10 during operation, thereby improving the deep drawing quality of the workpiece and extending the service life of the pressure pad 10. In addition, the design of the top plate 13 can also prevent the workpiece from deforming during the drawing process. During the drawing process, the flange part of the blank generates radial tensile stress and tangential compressive stress due to the action of the drawing force, resulting in plastic deformation of the material. The top plate 13 ensures that the workpiece maintains a stable shape during the drawing process through its supporting role, avoiding deformation caused by stress concentration.

[0030] Guide sleeve 18 is provided with a guide hole for sliding engagement with guide post 17. The guide hole is coaxially connected to the movable slot, and the movable slot has a larger diameter than the guide hole. The provision of the guide hole improves the guiding stability of guide post 17. At the same time, the coaxial and large-diameter movable slot effectively avoids contact between guide post 17 and lower die base 12.

[0031] In one embodiment, the mold also includes a positioning column 16, which is fixedly arranged on the lower mold base 12. The die fixing plate 4, the die plate 5, the pressure plate 9, the pressure pad 10 and the punch fixing plate 11 are all provided with positioning holes that cooperate with the positioning column 16. The positioning column 16 is arranged in the positioning hole for positioning other components.

[0032] In one embodiment, multiple exhaust holes are provided on both the inner pusher 6 and the punch 7. By adopting the above structure, the gas between the inner pusher 6 and the punch 7 is effectively exhausted, preventing the pressure from increasing during the drawing process, resulting in uneven product surface and affecting the drawing quality.

[0033] The above-described embodiments are merely descriptions of preferred implementations of the present invention and are not intended to limit the concept and scope of the present invention. Any modifications and improvements to the technical solution of the present invention made by a person of ordinary skill in the art without departing from the design concept of the present invention shall fall within the scope of protection of the present invention. The technical content sought to be protected by the present invention is fully set forth in the claims.

Claims

1. A drawing die for a stove chassis, characterized in that: The invention comprises an upper die base (3), a die fixing plate (4), a die plate (5), an inner pusher (6), a punch (7), a punch pad (8), a pressure plate (9), a pressure pad (10), a punch fixing plate (11) and a lower die base (12), wherein the inner pusher (6) is fixedly connected to the die plate (5), and the die plate (5) is fixed to the upper die base (3) through the die fixing plate (4); the punch (7) is fixedly connected to the punch fixing plate (11) through the punch pad (8), and the punch fixing plate (11) is fixed to the lower die base (12); the inner pusher (6) and the punch (7) are arranged in a corresponding matching manner, the punch fixing plate (11) is fixedly provided with a pressure pad (10), and the pressure pad (10) is fixedly provided with a pressure plate (9); a guide member for mold closing guidance is provided between the upper die base (3) and the lower die base (12).

2. The stove chassis drawing die according to claim 1, characterized in that: The guide member includes a guide column (17) and a guide sleeve (18), wherein the guide column (17) is fixedly connected to the upper die base (3), and the guide sleeve (18) is fixedly connected to the lower die base (12). The guide column (17) is slidably inserted into the guide sleeve (18), and the lower die base (12) is provided with a movable groove for sliding the guide column, and the movable groove is communicated with the guide sleeve (18).

3. The stove chassis drawing die according to claim 1, characterized in that: A top plate (13) is connected below the pressing pad (10) via a push rod, and the top plate (13) is located above the lower supporting plate (15).

4. The stove chassis drawing die according to claim 2, characterized in that: The guide sleeve (18) is provided with a guide hole for sliding engagement with the guide column (17), the guide hole is coaxially connected to the movable groove, and the aperture of the movable groove is larger than the aperture of the guide hole.

5. The stove chassis drawing die according to claim 1, characterized in that: It also includes a positioning column (16), which is fixedly arranged on the lower die base (12), and the die fixing plate (4), the die plate (5), the pressing plate (9), the pressing pad (10) and the punch fixing plate (11) are all provided with positioning holes that cooperate with the positioning column (16), and the positioning column (16) is arranged in the positioning hole.

6. The stove chassis drawing die according to claim 1, characterized in that: The inner pusher (6) and the punch (7) are both provided with a plurality of exhaust holes.

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