Punching equipment for filter shell

By designing a stamping device including a first forming mold and a second forming mold, and using a transport robot to flip the middleware for secondary stamping, the problem of inaccurate alignment during secondary stamping in the prior art is solved, and the stamping accuracy and product yield are improved.

CN222873123UActive Publication Date: 2025-05-16HUIZHOU XINSHENGDA PRECISION PARTS CO LTD
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Patent Information

Application Number
CN202421525571.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-28
Publication Date
2025-05-16
Estimated Expiration
2034-06-28

AI Technical Summary

Technical Problem

During secondary stamping, due to inaccurate alignment during the existing stamping equipment, the cavity structure of the aluminum block is pressed or broken, resulting in low product yield.

Method used

A stamping device including a first forming mold and a second forming mold is designed. The intermediate piece after the first stamping is flipped by a transfer robot and placed on the stamping lower die of the second forming mold. The molding concave and convex parts of the same structure are used for secondary stamping to ensure that the cavity structure is in line with the mold.

Benefits of technology

Through this design, the alignment error during secondary stamping is avoided, the stamping accuracy is improved, and the product yield is enhanced.

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Abstract

The utility model provides stamping equipment for a filter shell. The stamping equipment for the filter shell comprises a machine tool, a first forming die, a second forming die and a transfer manipulator, wherein the transfer manipulator is mounted on the machine tool; the first forming die comprises a stamping upper die and a bearing bottom die, the stamping upper die and the bearing bottom die are both installed on the machine tool, the stamping upper die is used for moving towards the bearing bottom die, and a first forming concave-convex part is arranged at the end, close to the bearing bottom die, of the stamping upper die; the second forming die comprises a stamping lower die and a bearing upper die, the stamping lower die and the bearing upper die are both installed on the machine tool, the stamping lower die is used for moving towards the bearing upper die, and a second forming concave-convex part is arranged at the end, close to the bearing upper die, of the stamping lower die. The first forming concave-convex part and the second forming concave-convex part are arranged in the same structure.
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Description

Technical Field

[0001] The present disclosure relates to the field of stamping equipment, and in particular to a stamping equipment for a filter housing. Background Art

[0002] A filter is a device that filters electromagnetic waves. It includes a hardware housing and components such as capacitors and resistors contained in the housing. The housing of the filter is generally made of aluminum, which can be formed by die casting or stamping. However, the die casting process is relatively complicated, and elements other than aluminum need to be added during the die casting process, resulting in a high porosity in the aluminum block cavity. Therefore, more aluminum blocks are used for forming through stamping equipment.

[0003] For example, a Chinese patent with application number CN202221948674.0 discloses a stamping equipment for processing aluminum veneer, including four groups of legs, a workbench, a lower die, an upper die, four groups of guide columns, a movable plate, four groups of tension springs, a top plate, a fixed plate, a first rotating shaft, a first pulley, a first belt, a second pulley, a motor and an eccentric block. The top ends of the four groups of legs are connected to the bottom end of the workbench, the bottom end of the lower die is connected to the top end of the workbench, a drop groove is provided in the middle part of the workbench, the drop groove corresponds to the position of the lower die, the upper die corresponds to the position of the lower die, the top end of the upper die is connected to the bottom end of the movable plate, the bottom ends of the four groups of guide columns are connected to the top end of the workbench, the eccentric block is in contact with the movable plate, and a material guiding device is provided on the workbench, and the material guiding device is connected to the first rotating shaft.

[0004] However, the structural design of the above-mentioned stamping equipment has the following problems during use:

[0005] The above-mentioned stamping equipment places the aluminum block on the lower die, and drives the upper die to move toward the lower die through the moving plate, so that the upper die and the lower die are closed, and then the aluminum block is stamped. However, for products that require secondary stamping, since a cavity structure is formed inside the aluminum block during the first stamping, and there is an aluminum column in the cavity structure, if the aluminum block after the first stamping is placed on the lower die of the above-mentioned stamping equipment again, when the upper die moves to the lower die, there will be a processing error between the upper die and the cavity of the aluminum block (the aluminum block has no cavity structure during the first stamping, and the error can be ignored), resulting in the upper die pressing the aluminum block cavity structure for the second time. The aluminum column will be deflected or broken, that is, there are problems of inaccurate alignment and poor precision, which makes the secondary stamping precision low, and then leads to the problem of aluminum block fracture, affecting the product yield.

[0006] Therefore, there is an urgent need for a stamping equipment with high stamping accuracy and high product yield. Utility Model Content

[0007] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a stamping device for a filter housing with high stamping accuracy and high product yield.

[0008] The purpose of this disclosure is achieved through the following technical solutions:

[0009] A stamping device for a filter housing, comprising:

[0010] A machine tool, a first molding die, and a second molding die, wherein the first molding die and the second molding die are arranged adjacent to each other,

[0011] The stamping equipment further includes a transfer robot, which is installed on the machine tool and is located between the first molding die and the second molding die;

[0012] The first molding die comprises a stamping upper die and a bearing bottom die, both of which are installed on the machine tool, the stamping upper die is used to move toward the bearing bottom die, and a first molding concave-convex portion is provided at one end of the stamping upper die adjacent to the bearing bottom die;

[0013] The second molding die comprises a stamping lower die and a bearing upper die, both of which are installed on the machine tool, the stamping lower die is used to move toward the bearing upper die, and a second molding concave-convex portion is provided at one end of the stamping lower die adjacent to the bearing upper die, and the first molding concave-convex portion and the second molding concave-convex portion have the same structure;

[0014] The first molding die is used to stamp out an intermediate piece from an aluminum block once, and the transfer robot is used to flip the intermediate piece over and place it on the stamping lower die, so that the second molding die can stamp out the intermediate piece for a second time.

[0015] In one embodiment, the supporting bottom mold is provided with a first receiving groove, and the first receiving groove is used to place the aluminum block; and,

[0016] The bearing upper mold is provided with a second accommodating groove, and the second accommodating groove is used for embedding the intermediate piece.

[0017] In one embodiment, the supporting bottom mold includes a bottom mold body and a first ejector, a first movable channel connected to the first accommodating groove is opened inside the bottom mold body, the first ejector is movably arranged in the first movable channel, and the bottom mold body and the first ejector together form the first accommodating groove.

[0018] In one embodiment, the height of the first receiving groove is 5 cm-6 cm.

[0019] In one embodiment, the supporting upper mold includes an upper mold body and a second ejector, a second movable channel connected to the second accommodating groove is opened inside the upper mold body, the second ejector is movably arranged in the second movable channel, and the upper mold body and the second ejector jointly form the second accommodating groove.

[0020] In one embodiment, the height of the second receiving groove is 5 cm-6 cm.

[0021] In one embodiment, the structure of the supporting bottom mold and the supporting upper mold are identically configured or differently configured.

[0022] In one embodiment, the cross-sectional area of ​​the stamping upper die is smaller than the cross-sectional area of ​​the bearing bottom die.

[0023] In one embodiment, the cross-sectional area of ​​the stamping lower die is smaller than the area of ​​the load-bearing upper die.

[0024] In one embodiment, the supporting bottom mold is circular in shape; and / or,

[0025] The bearing upper mold is circular in shape.

[0026] Compared with the prior art, the present invention has at least the following advantages:

[0027] In the above-mentioned stamping equipment for the filter housing, the first molding die and the second molding die are arranged adjacent to each other. During stamping, the aluminum block is first placed on the bearing bottom die of the first molding die, and the stamping upper die is moved toward the bearing bottom die to close the die, so as to stamp the aluminum block into an intermediate piece in one time; then, the intermediate piece is flipped by a transfer robot and placed on the stamping lower die of the second molding die. Since a first molding concave-convex portion is provided at the end of the stamping upper die, and a second molding concave-convex portion is provided at the end of the stamping lower die, and the first molding concave-convex portion has the same structure as the second molding concave-convex portion, that is, the cavity formed by the intermediate piece during one stamping is matched with the second molding concave-convex portion. In this way, by placing the intermediate piece upside down on the stamping lower die and moving the stamping lower die toward the bearing upper die, the problem of inaccurate positioning of the second molding die to the intermediate piece is avoided, the accuracy of the secondary stamping is improved, and the product yield is thereby improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1It is a structural schematic diagram of a stamping device for a filter housing according to an embodiment;

[0030] Figure 2 for Figure 1 Another structural schematic diagram of a stamping device for a filter housing is shown;

[0031] Figure 3 for Figure 1 Another schematic structural diagram of a stamping device for a filter housing is shown. DETAILED DESCRIPTION

[0032] In order to facilitate the understanding of the present disclosure, the present disclosure will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present disclosure are given in the drawings. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present disclosure more thoroughly and comprehensively understood.

[0033] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present disclosure. The terms used herein in the specification of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0035] The present disclosure provides a stamping device for a filter housing, comprising a machine tool, a first molding die, a second molding die and a transfer robot, wherein the first molding die and the second molding die are arranged adjacent to each other, the transfer robot is installed on the machine tool, and the transfer robot is located between the first molding die and the second molding die; the first molding die comprises a stamping upper die and a bearing bottom die, both of which are installed on the machine tool, the stamping upper die is used to move toward the bearing bottom die, and one end of the stamping upper die adjacent to the bearing bottom die is provided with a first molding die. The second molding die comprises a stamping lower die and a bearing upper die, both of which are installed on the machine tool, the stamping lower die is used to move toward the bearing upper die, and a second molding concave-convex portion is provided at one end of the stamping lower die adjacent to the bearing upper die, and the first molding concave-convex portion has the same structure as the second molding concave-convex portion; the first molding die is used to stamp out an intermediate piece from an aluminum block once, and the transfer robot is used to flip the intermediate piece and place it on the stamping lower die, so that the second molding die can stamp out the intermediate piece for a second time.

[0036] In the above-mentioned stamping equipment for the filter housing, the first molding die and the second molding die are arranged adjacent to each other. During stamping, the aluminum block is first placed on the bearing bottom die of the first molding die, and the stamping upper die is moved toward the bearing bottom die to close the die, so as to stamp the aluminum block into an intermediate piece in one time; then, the intermediate piece is flipped by a transfer robot and placed on the stamping lower die of the second molding die. Since a first molding concave-convex portion is provided at the end of the stamping upper die, and a second molding concave-convex portion is provided at the end of the stamping lower die, and the first molding concave-convex portion has the same structure as the second molding concave-convex portion, that is, the cavity formed by the intermediate piece during one stamping is matched with the second molding concave-convex portion. In this way, by placing the intermediate piece upside down on the stamping lower die and moving the stamping lower die toward the bearing upper die, the problem of inaccurate positioning of the second molding die to the intermediate piece is avoided, the accuracy of the secondary stamping is improved, and the product yield is thereby improved.

[0037] In order to better understand the technical solutions and beneficial effects of the present invention, the present invention is further described in detail below in conjunction with specific embodiments:

[0038] like Figure 1 , Figure 2 and Figure 3 As shown, a stamping device 10 for a filter housing in one embodiment includes a machine tool 100, a first molding die 200, a second molding die 300 and a transfer robot 400, wherein the first molding die 200 and the second molding die 300 are arranged adjacent to each other, and the transfer robot 400 is installed on the machine tool 100, and the transfer robot 400 is located between the first molding die 200 and the second molding die 300 to flip the aluminum block after stamping by the first molding die 200 to the second molding die 300.

[0039] Furthermore, the first molding die 200 includes a stamping upper die 210 and a bearing bottom die 220, both of which are installed on the machine tool 100, and the stamping upper die 210 is used to move toward the bearing bottom die 220. The stamping upper die 210 is provided with a first molding convex-concave portion 211 at one end adjacent to the bearing bottom die 220, so that the first molding convex-concave portion 211 punches one side of the aluminum block to form a cavity structure.

[0040] The second molding die 300 includes a stamping lower die 310 and a bearing upper die 320, both of which are installed on the machine tool 100, and the stamping lower die 310 is used to move toward the bearing upper die 320. The stamping lower die 310 is provided with a second molding concave-convex portion 311 at one end adjacent to the bearing upper die 320, and the first molding concave-convex portion 211 is arranged with the same structure as the second molding concave-convex portion 311, so that the cavity structure after the aluminum block is flipped over is adapted to the shape and size of the second molding concave-convex portion 311.

[0041] Furthermore, the first molding die 200 is used to stamp out an intermediate piece from the aluminum block once. The intermediate piece is a semi-finished product after one stamping. The transfer robot 400 is used to flip the intermediate piece and place it on the stamping lower die 310, so that the second molding die 300 can stamp out the intermediate piece for a second time to improve the stamping accuracy of the intermediate piece during the second stamping.

[0042] In this embodiment, the stamping upper die 210 of the first molding die 200 is connected to the driving end of the machine tool 100, the aluminum block is placed on the bearing bottom die 220, and one end of the stamping upper die 210 is provided with a first molding concave-convex portion 211. When the stamping upper die 210 moves toward the bearing bottom die 220 for mold closing, the first molding concave-convex portion 211 stamps the aluminum block to form an intermediate piece, and a cavity structure is formed in the intermediate piece; then, the transfer robot 400 turns the intermediate piece over, that is, the cavity structure is set downward, and the intermediate piece is placed in the transfer robot 400. The intermediate piece is placed in the stamping lower die 310 of the second molding die 300. One end of the stamping lower die 310 is connected to the driving end of the machine tool 100. The other end of the stamping lower die 310 is provided with a second molding convex-concave portion 311, and the first molding convex-concave portion 211 and the second molding convex-concave portion 311 have the same structure, so that after the intermediate piece is flipped, the cavity structure is adapted to the second molding convex-concave portion 311. The stamping lower die 310 drives the intermediate piece to move toward the supporting upper die 320 and close the film, thereby completing the second stamping. Specifically, compared with the traditional technology of secondary stamping, during the secondary stamping, the intermediate piece is placed in the lower die, and the molding convex-concave part is set in the upper die, that is, the molding convex-concave part of the upper die moves downward to perform secondary stamping on the cavity structure of the intermediate piece. In this application, the intermediate piece is placed on the second molding convex-concave part 311 of the stamping lower die 310, that is, the stamping lower die 310 drives the intermediate piece to move toward the supporting upper die 320 together, thereby avoiding the processing error during stamping of the stamping lower die 310 and the supporting upper die 320, thereby improving the stamping accuracy of the intermediate piece.

[0043] It should be noted that the transfer robot 400 first flips the middle piece and then grabs the middle piece to the second molding convex-concave portion 311 of the stamping lower die 310, and the transfer robot 400 is equipped with a sensor to ensure that the transfer robot 400 can accurately grab the middle piece. The details of how the transfer robot 400 flips and grabs the middle piece are existing technologies and will not be repeated here.

[0044] In the stamping device 10 for the filter housing, the first molding die 200 and the second molding die 300 are arranged adjacent to each other. During stamping, the aluminum block is first placed on the bearing bottom die 220 of the first molding die 200, and the stamping upper die 210 moves toward the bearing bottom die 220 to close the mold, so as to stamp the aluminum block into an intermediate piece at one time; then, the intermediate piece is turned over by the transfer robot 400 and placed on the stamping lower die 310 of the second molding die 300. Since the first molding concave-convex portion 2 is provided at the end of the stamping upper die 210, the aluminum block is formed into an intermediate piece by the stamping upper die 210. 11. A second molding convex-concave portion 311 is provided at the end of the stamping lower die 310, and the first molding convex-concave portion 211 has the same structure as the second molding convex-concave portion 311, that is, the cavity formed by the middle piece during the first stamping is matched with the second molding convex-concave portion 311. In this way, the middle piece is placed upside down on the stamping lower die 310 and the stamping lower die 310 is moved toward the supporting upper die 320, so that the problem of inaccurate alignment of the second molding die 300 with the middle piece is avoided, the accuracy of the secondary stamping is improved, and the product yield is improved.

[0045] like Figure 3 As shown, in one embodiment, the bearing bottom die 220 is provided with a first receiving groove 222, and the first receiving groove 222 is used to place the aluminum block; the bearing upper die 320 is provided with a second receiving groove, and the second receiving groove is used to embed the intermediate piece. It can be understood that the bearing bottom die 220 is located below the stamping upper die 210, the aluminum block is placed in the first receiving groove 222, and the bearing upper die 320 is located above the stamping lower die 310, and the intermediate piece is placed on the second molding concave-convex part 311 of the stamping lower die 310. When the bearing upper die 320 and the stamping lower die 310 are molded together, the intermediate piece is embedded in the second receiving groove.

[0046] like Figure 3 As shown, in one embodiment, the supporting bottom mold 220 includes a bottom mold body 221 and a first ejector (not shown), the bottom mold body 221 is provided with a first movable channel (not shown) connected to the first receiving groove 222, the first ejector is movably arranged in the first movable channel, and the bottom mold body 221 and the first ejector together form the first receiving groove 222. In this embodiment, the first ejector is connected to the driving end of the machine tool 100 so that the first ejector is movably arranged in the first movable channel, and the middle piece is located in the first receiving groove 222 after the first stamping is completed, and the first ejector moves to eject the middle piece out of the first receiving groove 222.

[0047] In one embodiment, the height of the first receiving groove 222 is 5 cm-6 cm. In this embodiment, the height of the first receiving groove 222 is 5 cm so as to completely accommodate the aluminum block.

[0048] like Figure 3As shown, in one embodiment, the upper die 320 includes an upper die body 321 and a second ejector 322. A second movable channel (not shown) connected to the second receiving groove is provided inside the upper die body 321. The second ejector 322 is movably arranged in the second movable channel. The upper die body 321 and the second ejector 322 jointly form the second receiving groove (not shown). In this embodiment, the second ejector 322 is connected to the driving end of the machine tool 100 so that the second ejector 322 is movably arranged in the second movable channel. After the second stamping is completed, the middle piece is embedded in the second receiving groove, and the second ejector 322 moves to eject the middle piece out of the second receiving groove.

[0049] In one embodiment, the height of the second accommodating groove is 5 cm-6 cm. In this embodiment, the height of the second accommodating groove is 5 cm so as to completely accommodate the middle piece.

[0050] In one embodiment, the structure of the bottom mold 220 is the same as or different from that of the upper mold 320. In this embodiment, the structure of the bottom mold 220 is the same as that of the upper mold 320, that is, the first receiving groove 222 is the same as the second receiving groove.

[0051] In another embodiment, the structures of the supporting bottom mold 220 and the supporting upper mold 320 are differently arranged, that is, the first accommodating groove 222 and the second accommodating groove have different structures. For example, the groove wall of the first accommodating groove 222 has no convex strips, while the groove wall of the second accommodating groove is provided with convex strips. The convex strips form a groove on the outer wall of the middle piece during the second stamping.

[0052] In one embodiment, the cross-sectional area of ​​the stamping upper die 210 is smaller than the cross-sectional area of ​​the supporting bottom die 220 , so that the stamping upper die 210 is pressed into the first receiving groove 222 and the aluminum block in the first receiving groove 222 is stamped.

[0053] In one embodiment, the cross-sectional area of ​​the stamping lower die 310 is smaller than the area of ​​the bearing upper die 320 , so that the stamping lower die 310 presses the intermediate piece into the second receiving groove.

[0054] In one embodiment, the bottom mold 220 is circular in shape. Of course, in other embodiments, the bottom mold 220 can also be other shapes such as rectangular or elliptical.

[0055] In one embodiment, the upper support mold 320 is circular in shape. Of course, in other embodiments, the upper support mold 320 can also be other shapes such as rectangular or elliptical.

[0056] Compared with the prior art, the present invention has at least the following advantages:

[0057] In the stamping device 10 for the filter housing, the first molding die 200 and the second molding die 300 are arranged adjacent to each other. During stamping, the aluminum block is first placed on the bearing bottom die 220 of the first molding die 200, and the stamping upper die 210 moves toward the bearing bottom die 220 to close the mold, so as to stamp the aluminum block into an intermediate piece at one time; then, the intermediate piece is turned over by the transfer robot 400 and placed on the stamping lower die 310 of the second molding die 300. Since the first molding concave-convex portion 2 is provided at the end of the stamping upper die 210, the aluminum block is formed into an intermediate piece by the stamping upper die 210. 11. A second molding convex-concave portion 311 is provided at the end of the stamping lower die 310, and the first molding convex-concave portion 211 has the same structure as the second molding convex-concave portion 311, that is, the cavity formed by the middle piece during the first stamping is matched with the second molding convex-concave portion 311. In this way, the middle piece is placed upside down on the stamping lower die 310 and the stamping lower die 310 is moved toward the supporting upper die 320, so that the problem of inaccurate alignment of the second molding die 300 with the middle piece is avoided, the accuracy of the secondary stamping is improved, and the product yield is improved.

[0058] The above-mentioned embodiments only express several implementation methods of the present disclosure, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present disclosure, and these all belong to the protection scope of the present disclosure. Therefore, the protection scope of the patent of the present disclosure shall be based on the attached claims.

Claims

1. A stamping device for a filter housing, comprising a machine tool, a first molding die, and a second molding die, wherein the first molding die and the second molding die are arranged adjacent to each other, characterized in that: The stamping equipment further includes a transfer robot, which is installed on the machine tool and is located between the first molding die and the second molding die; The first molding die comprises a stamping upper die and a bearing bottom die, both of which are installed on the machine tool, the stamping upper die is used to move toward the bearing bottom die, and a first molding concave-convex portion is provided at one end of the stamping upper die adjacent to the bearing bottom die; The second molding die comprises a stamping lower die and a bearing upper die, both of which are installed on the machine tool, the stamping lower die is used to move toward the bearing upper die, and a second molding concave-convex portion is provided at one end of the stamping lower die adjacent to the bearing upper die, and the first molding concave-convex portion and the second molding concave-convex portion have the same structure; The first molding die is used to stamp out an intermediate piece from an aluminum block once, and the transfer robot is used to flip the intermediate piece over and place it on the stamping lower die, so that the second molding die can stamp out the intermediate piece for a second time.

2. The punching device for a filter housing according to claim 1, characterized in that: The bearing bottom mold is provided with a first receiving groove, and the first receiving groove is used for placing the aluminum block; and, The load-bearing upper mold is provided with a second accommodating groove, and the second accommodating groove is used for embedding the intermediate piece.

3. The punching device for a filter housing according to claim 2, characterized in that: The bearing bottom mold includes a bottom mold body and a first ejector. A first movable channel connected to the first accommodating groove is opened inside the bottom mold body. The first ejector is movably arranged in the first movable channel. The bottom mold body and the first ejector jointly form the first accommodating groove.

4. The punching device for a filter housing according to claim 3, characterized in that: The height of the first containing groove is 5cm-6cm.

5. The punching device for a filter housing according to claim 2, characterized in that: The bearing upper mold includes an upper mold body and a second ejector. A second movable channel connected to the second accommodating groove is opened inside the upper mold body. The second ejector is movably arranged in the second movable channel. The upper mold body and the second ejector jointly form the second accommodating groove.

6. The punching device for a filter housing according to claim 5, characterized in that: The height of the second containing groove is 5cm-6cm.

7. The punching device for a filter housing according to claim 1, characterized in that: The structure of the bearing bottom mold and the bearing upper mold is the same or different.

8. The punching device for a filter housing according to claim 1, characterized in that: The cross-sectional area of ​​the stamping upper die is smaller than the cross-sectional area of ​​the bearing bottom die.

9. The punching device for a filter housing according to claim 1, characterized in that: The cross-sectional area of ​​the stamping lower die is smaller than the area of ​​the bearing upper die.

10. The punching device for a filter housing according to claim 1, characterized in that: The supporting bottom mold is circular in shape; and / or, The bearing upper mold is circular in shape.

Citation Information

Patent Citations

  • Stamping equipment for aluminum veneer machining

    CN218361519U