Ventilation filtering structure of drawing die

Abstract

The utility model discloses a ventilating and filtering structure of a drawing die. The ventilating and filtering structure comprises an upper die holder, a lower die holder and a flow guide bent pipe, an automobile stamping plate is arranged on the lower die base, and the upper die base with a vent hole is arranged above the lower die base in a lifting mode. A plurality of flow guide bent pipes are arranged in the cavity of the upper die base, one end of each flow guide bent pipe is a straight pipe and is communicated with the vent hole, and the other end of each flow guide bent pipe is a bent pipe and is communicated with the cavity of the upper die base. The utility model relates to the technical field of stamping equipment, and can solve the problem of poor drawing quality of a molded surface of an automobile stamping plate in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping equipment, in particular to a drawing die ventilation and filtering structure. Background Art

[0002] Stamping is one of the four major manufacturing processes of vehicle manufacturers. Figure 1 and attached Figure 2 The drawing die of the prior art includes an upper die base 1, a lower die base 2, a ring die 3, a wear-resistant plate 6, a push rod 7, etc., and its working process is: placing the automobile stamping plate 8 on the lower die base 2, and performing a drawing and stamping process on the automobile stamping plate 8 when the upper die base 1 is pressed down to close the mold.

[0003] Please see attached Figure 1 When the upper die holder 1 is closed downward, the air on the die surface of the automobile stamping plate 8 will be discharged into the cavity of the upper die holder 1 through the vent holes on the upper die holder 1 in the direction of the arrow in the figure, so that the air on the die surface can be quickly emptied. Figure 2 When the upper die seat 1 is opened upward, negative pressure is instantly formed on the surface of the automobile stamping plate 8, and the air in the cavity of the upper die seat 1 is quickly and massively sucked out to the surface of the automobile stamping plate 8 through the vent holes on the upper die seat 1 in the direction of the arrow in the figure.

[0004] Under long-term repetitive actions, the tiny shavings, dust, sewage and other debris accumulated in the cavity of the upper die seat 1 will flow with the air to the surface of the automobile stamping plate, resulting in the accumulation of foreign matter and sewage on the surface of the automobile stamping plate, which in turn leads to quality problems such as poor convexity and rust, poor drawing quality of the automobile stamping plate surface, reduced product quality, large rework workload, and high labor load of personnel. Therefore, it is necessary to provide a drawing die ventilation and filtering structure that can solve the problem of poor drawing quality of automobile stamping plate surface in the prior art. Summary of the invention

[0005] The utility model aims to provide a drawing die ventilation and filtering structure, which can solve the problem of poor drawing quality of automobile stamping plate parts in the prior art.

[0006] The utility model is achieved in this way:

[0007] A drawing die ventilation and filtering structure comprises an upper die seat, a lower die seat and a guide bend pipe; an automobile stamping plate is placed on the lower die seat, and an upper die seat with a vent hole is arranged above the lower die seat in a liftable manner; a plurality of guide bend pipes are arranged in the cavity of the upper die seat, one end of each guide bend pipe is a straight pipe and is connected to the vent hole, and the other end of the guide bend pipe is a curved pipe and is connected to the cavity of the upper die seat.

[0008] The diversion elbow is embedded with filter cotton.

[0009] The filter cotton is located in the bend pipe opening of the diversion bend pipe.

[0010] The angle between the bend and the straight pipe of the diversion bend does not exceed 90°.

[0011] The number of the diversion bend pipes is consistent with the number of the vent holes on the upper die base, and the inner diameter of the diversion bend pipe is consistent with the aperture of the vent holes on the upper die base.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The utility model is provided with a guide elbow, the straight pipe of which is connected with the through hole, so as to ensure that the air on the automobile stamping plate surface is quickly discharged into the guide elbow, thereby ensuring the exhaust effect when the mold is closed. The elbow of the guide elbow is located in the cavity of the upper die seat, which can prevent fine hair scraps, dust, sewage and other debris in the cavity of the upper die seat from flowing with the air to the automobile stamping plate surface, thereby improving the drawing quality of the automobile stamping plate surface, and can also reversely prevent debris from flowing with the air to the cavity of the upper die seat to a certain extent, thereby aggravating the accumulation of debris in the cavity of the upper die seat.

[0014] 2. The utility model is provided with filter cotton, which can absorb small hair, dust, sewage and other debris in the air without affecting the air flow, further ensuring the cleanliness of the flowing air, thereby ensuring the drawing quality of the automobile stamping plate surface, avoiding the problems of poor convexity and rust on the automobile stamping plate surface, improving product quality, and reducing the rework rate and labor load of personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a cross-sectional structural diagram of a prior art drawing die (exhaust state);

[0016] Figure 2 It is a cross-sectional structural diagram of a prior art drawing die (inhalation state);

[0017] Figure 3 It is a cross-sectional structural diagram of the ventilation and filtering structure of the drawing die of the utility model.

[0018] In the figure, 1 is an upper die base, 2 is a lower die base, 3 is a ring die, 4 is a guide elbow, 5 is filter cotton, 6 is a wear-resistant plate, 7 is a push rod, and 8 is an automobile stamping plate. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0020] Please see attached Figure 3A drawing die ventilation and filtering structure comprises an upper die base 1, a lower die base 2 and a guide bend 4; an automobile stamping plate 8 is placed on the lower die base 2, and the upper die base 1 with a vent hole can be lifted and lowered above the lower die base 2; a plurality of guide bends 4 are arranged in the cavity of the upper die base 1, one end of each guide bend 4 is a straight pipe and connected to the vent hole, and the other end of the guide bend 4 is a curved pipe and connected to the cavity of the upper die base 1.

[0021] A vent hole communicating with the cavity is formed on the upper die base 1. The lower die base 2 and the upper die base 1 are both conventional components of the drawing die, and their structures and working processes will not be described in detail here.

[0022] Preferably, the guide bend 4 can be made of metal material, so that the air in the cavity of the upper die base 1 and the air on the molding surface of the automobile stamping plate 8 can flow through the guide bend 4 .

[0023] Since one end of the diversion bend 4 connected to the vent is a straight pipe, the air flow on the profile of the automobile stamping plate 8 is guaranteed to be smooth. Since the other end of the diversion bend 4 connected to the cavity of the upper die seat 1 is a curved pipe, the fine shavings, dust, and sewage accumulated in the cavity of the upper die seat 1 are not easy to enter the diversion bend 4, thereby preventing the fine shavings, dust, and sewage in the cavity of the upper die seat 1 from flowing with the air to the profile of the automobile stamping plate 8, thereby ensuring the profile drawing quality of the automobile stamping plate 8. At the same time, the curved pipe of the diversion bend 4 can also reduce the debris on the profile of the automobile stamping plate 8 from entering the cavity of the upper die seat 1 in the reverse direction with the air, and improve the accumulation of dirt in the cavity of the upper die seat 1 to a certain extent.

[0024] The diversion elbow 4 is embedded with filter cotton 5 .

[0025] Preferably, the filter cotton 5 can be made of sponge, which can ensure that air can flow through the filter cotton 5 normally without affecting the air flow between the molding surface of the automobile stamping plate 8 and the cavity of the upper mold base 1. At the same time, it can adsorb the fine hair, dust and sewage contained in the flowing air, play a filtering role, ensure the cleanliness of the flowing air, and further ensure the drawing quality of the automobile stamping plate 8.

[0026] The filter cotton 5 is located in the bend pipe opening of the diversion bend pipe 4.

[0027] Since fine lint, dust, sewage and other impurities are easily accumulated in the cavity of the upper die base 1, the filter cotton 5 is arranged in the bend pipe mouth of the guide bend pipe 4, that is, at the starting end where the air in the cavity of the upper die base 1 flows toward the profile of the automobile stamping plate 8, so that the flowing air can pass through the filter cotton 5 for full and effective filtration.

[0028] The angle between the bend and the straight pipe of the diversion bend pipe 4 does not exceed 90°.

[0029] The extension direction of the bent pipe end of the guide bend pipe 4 is substantially the same as the extension direction of the straight pipe, so that the bent pipe of the guide bend pipe 4 can be used to effectively block the debris in the cavity of the upper mold base 1 from entering the guide bend pipe 4, thereby achieving an effective filtering effect.

[0030] The number of the guide bend pipes 4 is consistent with the number of the vent holes on the upper die base 1 , and the inner diameter of the guide bend pipes 4 is consistent with the aperture of the vent holes on the upper die base 1 .

[0031] The number of the guide bends 4 can be adaptively set according to the number of the vents on the upper die base 1, and the size of the guide bends 4 can be adaptively set according to the size of the vents, ensuring that the flowing air is effectively filtered without affecting the air flow amount and flow speed.

[0032] Please see attached Figure 3 , the working process and working principle of the utility model are:

[0033] The upper die seat 1 is raised and lowered by the oil cylinder slide block of the drawing die. When the upper die seat 1 descends, the air on the surface of the automobile stamping plate 8 enters the cavity of the upper die seat 1 through the vent hole and the guide bend 4 to achieve the purpose of exhaust. The upper die seat 1 descends to close the die, completing the drawing and stamping of the automobile stamping plate 8.

[0034] When the upper die seat 1 rises, negative pressure is instantly formed on the mold surface of the automobile stamping plate 8, and the air in the cavity of the upper die seat 1 is sucked out to the mold surface of the automobile stamping plate 8 through the diversion bend 4 and the vent. Due to the curved pipe setting of the diversion bend 4, it can prevent small debris, dust, sewage and other debris in the cavity of the upper die seat 1 from entering the diversion bend 4. At the same time, the air entering the diversion bend 4 is filtered by the filter cotton 5, which further prevents small debris, dust, sewage and the like in the cavity of the upper die seat 1 from entering the diversion bend 4, ensuring the cleanliness of the air flowing to the mold surface of the automobile stamping plate 8, thereby preventing the convex bulge caused by the accumulation of dirt on the mold surface of the automobile stamping plate 8 and the rust caused by the accumulation of sewage.

[0035] The above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A drawing die ventilation and filtering structure, characterized by: The invention comprises an upper die base (1), a lower die base (2) and a guide bend pipe (4); an automobile stamping plate (8) is placed on the lower die base (2); the upper die base (1) with a vent hole is arranged above the lower die base (2) in a liftable manner; a plurality of guide bend pipes (4) are arranged in the cavity of the upper die base (1); one end of each guide bend pipe (4) is a straight pipe and is connected to the vent hole, and the other end of the guide bend pipe (4) is a curved pipe and is connected to the cavity of the upper die base (1).

2. The drawing die ventilation and filtering structure according to claim 1 is characterized in that: The diversion curved pipe (4) is embedded with filter cotton (5).

3. The drawing die ventilation and filtering structure according to claim 2 is characterized in that: The filter cotton (5) is located in the bend pipe opening of the diversion bend pipe (4).

4. The drawing die ventilation and filtering structure according to claim 1 is characterized in that: The angle between the bend and the straight pipe of the diversion bend pipe (4) does not exceed 90°.

5. The drawing die ventilation and filtering structure according to claim 1 is characterized in that: The number of the guide bend pipes (4) is consistent with the number of the vent holes on the upper die base (1), and the inner diameter of the guide bend pipe (4) is consistent with the aperture of the vent holes on the upper die base (1).

Images