Punching die for manufacturing automobile parts

Abstract

The utility model relates to the technical field of automobile part production, and discloses a punching die for automobile part manufacturing, which comprises a lower die body and an upper die body which are matched with each other, the bottom of the lower die body is provided with a heat dissipation cavity, and two sides of the lower die body are fixedly provided with two delivery pipes for feeding and discharging water; the guiding structure comprises first guiding bodies, second guiding bodies and reversing grooves, the wall face of each first guiding body is provided with the same reversing groove, low-temperature tap water is fed into the heat dissipation cavity through one conveying pipe and discharged into the water storage pond through the other conveying pipe, cooling and heat dissipation of the lower die body and the workpiece are achieved, the temperature of the lower die body is reduced, and the heat dissipation efficiency of the lower die body is improved. The influence of high temperature on punching is avoided, the probability that the lower die body is damaged by repeated punching is reduced, water continuously impacts the first guiding bodies through separation guiding of the multiple first guiding bodies, the first guiding bodies and the second guiding bodies abut against the inner top face of the lower die body, the contact surface area of the lower die body and the water is increased, and the heat exchange effect of the lower die body and the water is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile part production, in particular to a punching die for manufacturing automobile parts. Background Art

[0002] At present, the molds for processing automobile parts on the market mainly include an upper die and a lower die. Brackets are provided on both sides of the lower die, and both sides of the upper die are slidably connected to the brackets. A cylinder for driving the upper die to move is also provided on the brackets. The punching of workpieces is realized through the cooperation of the upper and lower die bodies.

[0003] The prior art discloses a mold for automobile parts with easy demolding (publication number: CN220560286U), belonging to the technical field of automobile part processing, including a lifting mechanism, a lower mold, an upper mold, and an ejecting mechanism. The lifting mechanism is arranged on the top plate, and its lifting end is connected to the upper mold. The lower mold is arranged on the base. A mold groove is opened on the lower mold, and an installation groove located below the lower mold is opened on the base. The ejecting mechanism is arranged in the installation groove.

[0004] During continuous operation, since the sheet material will release heat energy due to extrusion deformation, the die body in contact with the workpiece will be heated. The longer the use time, the more obvious the heat accumulation phenomenon. The accumulated heat will cause the workpiece to deform and affect the accuracy, and at the same time, it will also affect the accuracy of the mold. Therefore, it is necessary to dissipate heat from the mold during continuous stamping.

[0005] For this reason, we propose a punching die for manufacturing automobile parts. Summary of the Utility Model

[0006] The utility model mainly solves the technical problem that continuous use will cause heat accumulation in the mold and high temperature, and provides a punching die for manufacturing automobile parts.

[0007] In order to achieve the above object, the utility model adopts the following technical scheme. A punching die for manufacturing automobile parts includes:

[0008] A lower die body and an upper die body that cooperate with each other. An punching cavity is provided at the top of the lower die body, a punch is provided at the bottom of the upper die body, a heat dissipation cavity is opened at the bottom of the lower die body, and two conveying pipes for water inlet and drainage are fixedly installed on both sides of the lower die body. One of the conveying pipes is connected to a water source. A bottom plate is provided at the bottom of the lower die body, and the bottom plate is locked with the lower die body by bolts to block and seal the heat dissipation cavity;

[0009] The guiding structure is arranged in the heat dissipation cavity for heat dissipation by the counter punching cavity. The guiding structure includes a first guiding body, a second guiding body and a commutation groove. The second guiding body is fixedly connected with the first guiding body to form a guiding module. A number of guiding modules are arranged in the heat dissipation cavity. The same commutation groove is opened on the wall surface of each first guiding body. The spaces on both sides of the first guiding body are communicated through the commutation groove.

[0010] As a preferred embodiment of the present utility model, the heat dissipation cavity forms a zigzag groove. The punching cavity is opposite to the hollow position of the heat dissipation cavity. A number of holes for discharging waste are opened at the bottom of the lower die body.

[0011] As a preferred embodiment of the present utility model, the first guiding body forms a plate with an L-shaped horizontal cross-section. The second guiding body is fixedly connected to the end of the first guiding body.

[0012] As a preferred embodiment of the present utility model, a jack for installing the first guiding body is opened on the bottom side wall of the lower die body. The first guiding body passes through the jack and extends to the lower part of the punching cavity of the lower die body.

[0013] As a preferred embodiment of the present utility model, the second guiding body forms a plate with a V-shaped horizontal cross-section. The two ends of the second guiding body respectively abut against the inner side wall surface of the lower die body.

[0014] As a preferred embodiment of the present utility model, two rows of the same first guiding bodies are symmetrically arranged on both sides of the heat dissipation cavity. Each row includes at least four same first guiding bodies. The two columns of parallel distributed first guiding bodies are respectively fixedly connected to the two ends of the second guiding body.

[0015] As a preferred embodiment of the present utility model, the commutation groove forms a rectangular groove. The adjacent two commutation grooves are staggeredly distributed. The end of the first guiding body close to the inner side wall of the lower die body is a free end. The end of the first guiding body close to the center position of the bottom of the lower die body is a tail end. The adjacent two commutation grooves are respectively opened at the positions of the corresponding first guiding body close to the free end and close to the tail end.

[0016] Beneficial effects

[0017] The present utility model provides a punching die for manufacturing automobile parts. It has the following beneficial effects:

[0018] 1. The punching die for manufacturing automobile parts cools and dissipates heat from the lower die body and the workpiece by connecting one of the conveying pipes to a water source (the water source can be tap water), and the other conveying pipe can be connected to a water storage tank. Cold tap water is sent into the heat dissipation cavity through one of the conveying pipes and discharged into the water storage tank through the other conveying pipe, so as to cool and dissipate heat from the lower die body and the workpiece. For the continuously stamped lower die body and upper die body, the temperature of the lower die body can be reduced, the influence of high temperature on punching can be avoided, and the probability of repeatedly punching and damaging the lower die body can be reduced. Water enters from one side of the heat dissipation cavity and flows towards the other conveying pipe through two parallel parts of the heat dissipation cavity. After being separated and guided by multiple first guiding bodies and cooperating with the commutation grooves, the water continuously impacts the first guiding bodies. Both the first guiding bodies and the second guiding bodies are in contact with the inner top surface of the lower die body, increasing the contact surface area between the lower die body and the water and improving the heat exchange effect between the lower die body and the water.

[0019] 2. The punching die for manufacturing automobile parts sets a V-shaped second guiding body to cooperate with an L-shaped first guiding body, further increasing the surface area of the guiding module jointly formed by the first guiding body and the second guiding body. The second guiding body located below the punching groove of the lower die body can not only dissipate heat from the punched workpiece in time, but also provide support for the lower part of the punched workpiece, ensuring the overall strength of the lower die body. The holes for discharging waste are located between two adjacent second guiding bodies for surface slag discharge.

[0020] 3. The punching die for manufacturing automobile parts sets commutation grooves, so that when water flows through the heat dissipation cavity, it continuously impacts the first guiding bodies. When contacting the first guiding bodies, the water can flow from the commutation grooves to another first guiding body, and two adjacent commutation grooves are offset. Therefore, when the water flows between adjacent first guiding bodies, a bent flow track will be formed, extending the flow track of the water to improve the heat exchange effect between the water and the lower die body, ensuring the heat dissipation of the workpiece and the lower die body, and avoiding the adhesion between the workpiece and the lower die body due to high temperature caused by continuous punching. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 One of the overall three-dimensional views of the present utility model;

[0022] Figure 2 Three-dimensional view of the lower die body of the present utility model;

[0023] Figure 3 Three-dimensional view of the upper die body of the present utility model;

[0024] Figure 4 Another overall three-dimensional view of the present utility model;

[0025] Figure 5 Three-dimensional view of the internal structure of the heat dissipation cavity of the present utility model;

[0026] Figure 6 Three-dimensional view of the first guiding body and the second guiding body.

[0027] Legend: 10, lower die body; 11, upper die body; 12, heat dissipation cavity; 13, bottom plate; 20, first guide body; 21, second guide body; 22, reversing groove; 23, conveying pipe. Specific implementation mode

[0028] A punching die for manufacturing automotive parts, as Figure 1 、 Figure 2 and Figure 3 shown, includes:

[0029] The mutually cooperating lower die body 10 and upper die body 11. The top of the lower die body 10 is provided with a punching cavity, the bottom of the upper die body 11 is provided with a punch. The bottom of the lower die body 10 is provided with a heat dissipation cavity 12. Two conveying pipes 23 for water inlet and drainage are fixedly installed on both sides of the lower die body 10. One of the conveying pipes 23 is connected to a water source. The bottom of the lower die body 10 is provided with a bottom plate 13. The bottom plate 13 is locked with the lower die body 10 by bolts and seals the heat dissipation cavity 12. In this solution, by connecting one of the conveying pipes 23 to a water source, the water source can be tap water, and the other conveying pipe 23 can be connected to a water storage tank. The low-temperature tap water is sent into the heat dissipation cavity 12 through one of the conveying pipes 23 and discharged into the water storage tank through the other conveying pipe 23, so as to realize the cooling and heat dissipation of the lower die body 10 and the workpiece. For the continuously stamping lower die body 10 and upper die body 11, the temperature of the lower die body 10 can be reduced, the influence of high temperature on punching can be avoided, and the probability of repeatedly punching and damaging the lower die body 10 can be reduced;

[0030] Such as Figure 4 、 Figure 5 and Figure 6As shown, a guiding structure is arranged in the heat dissipation cavity 12 for heat dissipation using a counter-punching cavity. The guiding structure includes a first guiding body 20, a second guiding body 21, and a reversing groove 22. The second guiding body 21 is fixedly connected to the first guiding body 20 to form a guiding module. A number of guiding modules are arranged in the heat dissipation cavity 12. The same reversing groove 22 is opened on the wall surface of each first guiding body 20. The spaces on both sides of the first guiding body 20 communicate with each other through the reversing groove 22. The heat dissipation cavity 12 forms a loop-shaped groove. The punching cavity is opposite to the hollow position of the heat dissipation cavity 12. A number of holes for discharging waste materials are opened at the bottom of the lower die body 10. The first guiding body 20 forms a plate with an L-shaped horizontal cross-section. The second guiding body 21 is fixedly connected to the end of the first guiding body 20. The second guiding body 21 forms a plate with a V-shaped horizontal cross-section. The two ends of the second guiding body 21 respectively abut against the inner side wall surface of the lower die body 10. In this solution, water enters from one side of the heat dissipation cavity 12 and flows towards the other conveying pipe 23 through two parallel parts of the heat dissipation cavity 12. Through the separation and guidance of multiple first guiding bodies 20 and in cooperation with the reversing groove 22, the water continuously impacts the first guiding body 20. Both the first guiding body 20 and the second guiding body 21 abut against the inner top surface of the lower die body 10, increasing the contact surface area between the lower die body 10 and the water and improving the heat exchange effect between the lower die body 10 and the water.

[0031] As Figure 5 and Figure 6 As shown, an insertion hole for installing the first guiding body 20 is opened on the bottom side wall of the lower die body 10. The first guiding body 20 passes through the insertion hole and extends to the lower part of the punching cavity of the lower die body 10. Two rows of the same first guiding bodies 20 are symmetrically arranged on both sides of the heat dissipation cavity 12. Each row includes at least four identical first guiding bodies 20. The two columns of parallelly distributed first guiding bodies 20 are respectively fixedly connected to the two ends of the second guiding body 21. By setting the V-shaped second guiding body 21 in cooperation with the L-shaped first guiding body 20, the surface area of the guiding module jointly formed by the first guiding body 20 and the second guiding body 21 is further increased. The second guiding body 21 located below the punching groove of the lower die body 10 can not only timely dissipate heat from the punched workpiece but also provide support for the lower part of the punched workpiece, ensuring the overall strength of the lower die body 10. The holes for discharging waste materials are located between two adjacent second guiding bodies 21 for slag discharge on the surface.

[0032] As Figure 6As shown, the commutation groove 22 forms a rectangular groove, and two adjacent commutation grooves 22 are staggeredly distributed. The end of the first guiding body 20 close to the inner side wall of the lower die body 10 is the free end, and the end of the first guiding body 20 close to the center position of the bottom of the lower die body 10 is the tail end. Two adjacent commutation grooves 22 are respectively opened at the positions of the corresponding first guiding body 20 close to the free end and close to the tail end. By setting the commutation groove 22, when water flows through the heat dissipation cavity 12, it continuously impacts the first guiding body 20. When contacting the first guiding body 20, it can flow from the commutation groove 22 to another first guiding body 20. And two adjacent commutation grooves 22 are staggered. Therefore, when water flows between adjacent first guiding bodies 20, a bent flow track will be formed, extending the flow track of water to improve the heat exchange effect between water and the lower die body 10, ensuring the heat dissipation of the workpiece and the lower die body 10, and preventing the workpiece from sticking to the lower die body 10 due to continuous high temperature during punching.

[0033] The working principle of the present utility model: Connect one of the conveying pipes 23 to a water source, and the water source can be tap water. The other conveying pipe 23 can be connected to a water storage tank. Send low-temperature tap water into the heat dissipation cavity 12 through one of the conveying pipes 23 and discharge it into the water storage tank through the other conveying pipe 23 to realize the cooling and heat dissipation of the lower die body 10 and the workpiece. Water enters from one side of the heat dissipation cavity 12 and flows towards the other conveying pipe 23 through two parallel parts of the heat dissipation cavity 12. Through the separation and guidance of multiple first guiding bodies 20, when water flows through the heat dissipation cavity 12, it continuously impacts the first guiding body 20. When contacting the first guiding body 20, it can flow from the commutation groove 22 to another first guiding body 20. And two adjacent commutation grooves 22 are staggered. Therefore, when water flows between adjacent first guiding bodies 20, a bent flow track will be formed, extending the flow track of water to improve the heat exchange effect between water and the lower die body 10. By setting the V-shaped second guiding body 21 to cooperate with the L-shaped first guiding body 20, the surface area of the guiding module jointly formed by the first guiding body 20 and the second guiding body 21 is further increased. The second guiding body 21 located below the punching groove of the lower die body 10 can not only timely dissipate heat from the punched workpiece, but also provide support for the lower part of the punched workpiece.

[0034] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A punching die for automobile parts manufacturing, characterized in that: include: A lower mold body (10) and an upper mold body (11) cooperate with each other, the top of the lower mold body (10) is provided with a punching cavity, the bottom of the upper mold body (11) is provided with a punch, the bottom of the lower mold body (10) is provided with a heat dissipation cavity (12), two delivery pipes (23) for water inlet and outlet are fixedly installed on both sides of the lower mold body (10), one of the delivery pipes (23) is connected to a water source, and the bottom of the lower mold body (10) is provided with a bottom plate (13), which is locked with the lower mold body (10) by bolts and blocks and seals the heat dissipation cavity (12); A guide structure is arranged in a heat dissipation cavity (12) and uses a punch hole cavity to dissipate heat. The guide structure comprises a first guide body (20), a second guide body (21) and a reversing groove (22). The second guide body (21) is fixedly connected to the first guide body (20) to form a guide module. A plurality of guide modules are arranged in the heat dissipation cavity (12). The wall surface of each first guide body (20) is provided with the same reversing groove (22). The spaces on both sides of the first guide body (20) are communicated through the reversing groove (22).

2. The punching die for automobile parts manufacturing according to claim 1, characterized in that: The heat dissipation cavity (12) forms a U-shaped groove, the punching cavity is directly opposite to the hollow position of the heat dissipation cavity (12), and a plurality of holes for discharging waste are opened at the bottom of the lower mold body (10).

3. The punching die for automobile parts manufacturing according to claim 1, characterized in that: The first guide body (20) is formed into a plate with an L-shaped horizontal cross section, and the second guide body (21) is fixedly connected to the end of the first guide body (20).

4. The punching die for automobile parts manufacturing according to claim 1, characterized in that: The bottom side wall of the lower mold body (10) is provided with an insertion hole for installing the first guide body (20), and the first guide body (20) extends through the insertion hole to below the punching cavity of the lower mold body (10).

5. The punching die for automobile parts manufacturing according to claim 1, characterized in that: The second guide body (21) is formed into a plate with a V-shaped horizontal cross section, and two ends of the second guide body (21) respectively abut against the inner wall surface of the lower mold body (10).

6. The punching die for automobile parts manufacturing according to claim 1, characterized in that: Two rows of identical first guide bodies (20) are symmetrically arranged on both sides of the heat dissipation cavity (12), each row comprising at least four identical first guide bodies (20), and two columns of parallelly distributed first guide bodies (20) are respectively fixedly connected to two ends of the second guide body (21).

7. The punching die for automobile parts manufacturing according to claim 1, characterized in that: The reversing groove (22) forms a rectangular groove, and two adjacent reversing grooves (22) are staggered. The end of the first guide body (20) close to the inner wall of the lower mold body (10) is a free end, and the end of the first guide body (20) close to the bottom center of the lower mold body (10) is a tail end. The two adjacent reversing grooves (22) are respectively opened at the positions corresponding to the first guide body (20) close to the free end and close to the tail end.

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