A female die for stamping a housing

Abstract

The utility model relates to the technical field of lithium battery, especially a concave die for stamping shell, including base body and working ring, the access channel of access shell is formed on the base body, the working ring is detachably arranged in the base body and is close to the access end of base body, the part of working ring fixed on the base body and protruding in the access channel is extruded by shell in the stretching process, the working ring is annularly spliced by multiple inserts. The technical problem that the concave die is not easy to replace and poor in economy in the prior art is solved.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery technology, and in particular to a die for stamping housings. Background Technology

[0002] The casing of a lithium battery is cylindrical in shape and is formed by stamping with a die. Specifically, the casing is placed inside a die and stamped by a punch. During this process, the die is constantly subjected to impact forces, inevitably resulting in localized wear. In existing technologies, the die is a one-piece molded structure. When localized wear occurs, the entire die needs to be replaced. The entire die is heavy, difficult to replace, and economical to replace the entire die for localized wear. Summary of the Invention

[0003] To address the technical problems of difficulty in replacing dies and poor economic efficiency in the prior art, this application proposes a die specifically for stamping housings, thus solving the aforementioned technical problems.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] This utility model provides a die for stamping a housing, comprising: a base having an access channel for accessing the housing formed thereon; and a working ring detachably disposed within the base and close to the access end of the base. After the working ring is fixed to the base, the portion protruding into the access channel is squeezed by the housing during the stretching process. The working ring is formed by multiple inserts joined together in a ring shape.

[0006] Furthermore, the base includes a base and a ring sleeve that enclose and limit the working ring. The inner ring of the base is raised upward to form a guide section. At the same time, the lower end of the working ring is formed as a guide end. The working ring is sleeved and positioned on the guide section through the guide end. The inner wall surface of the ring sleeve is attached to the outer ring surface of the working ring. The top end of the ring sleeve forms a pressing ring end that presses against the upper end of the working ring. The bottom end of the ring sleeve is fixedly connected to the outer ring of the base.

[0007] Furthermore, the guide surface of the guide segment is an inclined surface and faces away from the access channel.

[0008] Furthermore, the top portion of the ring extends into the access channel to form the pressure ring end.

[0009] Furthermore, the vertical surface of the pressure ring end facing the access channel is inclined to form an access port that is wider on the outside and narrower on the inside at the access end of the substrate.

[0010] Furthermore, all the inserts are interference-fitted and placed between the base and the ring.

[0011] Furthermore, the outer ring surface of the working ring is a vertical surface.

[0012] Furthermore, a cooling groove is formed between the inner wall surface of the ring sleeve and the outer ring surface of the working ring.

[0013] Furthermore, the cooling groove is formed on the inner wall surface of the ring.

[0014] Based on the above technical solution, the technical effects that this utility model can achieve are as follows:

[0015] The present invention discloses a die for stamping housings, comprising a working ring detachably mounted on a base. After the working ring is fixed to the base, the portion protruding into the access channel is squeezed by the housing during the stretching process. That is, the portion of the working ring mounted in the access channel forms the working surface portion of the die that is squeezed by the housing. Thus, when the working ring is worn, only the working ring needs to be replaced instead of the entire base. Furthermore, the working ring is composed of multiple inserts spliced ​​in a ring shape, which allows for more precise replacement of the worn inserts. The inserts are lightweight, easy to replace, time-saving, and labor-saving. Moreover, the cost of replacing one or a few inserts is significantly lower than the cost of replacing the entire die base.

[0016] The present invention relates to a die for stamping housings, wherein a cooling groove is formed between the inner wall surface of the ring sleeve and the outer ring surface of the working ring. After a cooling medium is introduced into the cooling groove, it can be used to cool the die, especially the working ring, thereby reducing the heat accumulation generated during the stretching process after stamping and alleviating the carbonization of the oil film on the working ring. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the die for stamping housing according to the present invention;

[0018] Figure 2 This is a diagram showing the distribution of the inserts of this utility model on the working ring.

[0019] Wherein: a-shell; 1-base, 11-access channel, 12-base, 121-guide section, 13-ring sleeve, 131-pressure ring end, 132-cooling groove; 2-working ring, 21-insert, 22-guide end. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0021] like Figure 1-2 As shown, this utility model provides a die for stamping a housing, including a base 1 and a working ring 2. The base 1 has an access channel 11 for accessing the housing a. The working ring 2 is detachably disposed in the base 1 and close to the access end of the base 1. After the working ring 2 is fixed on the base 1, the part protruding into the access channel 11 is squeezed by the housing a during the stretching process. The working ring 2 is formed by multiple inserts 21 spliced ​​in a ring shape. Specifically, twelve inserts 21 can form one working ring 2.

[0022] In a specific embodiment of this utility model, the base 1 includes a base 12 and a ring sleeve 13 that enclose and limit the working ring 2. The inner ring of the base 12 is raised upward to form a guide section 121. At the same time, the lower end of the working ring 2 is formed as a guide end 22. The working ring 2 is sleeved and positioned on the guide section 121 through the guide end 22. The inner wall surface of the ring sleeve 13 is attached to the outer ring surface of the working ring 2. The top end of the ring sleeve 13 forms a pressing end 131 that is pressed against the upper end of the working ring 2. The bottom end of the ring sleeve 13 is fixedly connected to the outer ring of the base 12, such as by screwing. The screwing bolt passes through the outer ring of the base 12 and is inserted into the ring sleeve 13.

[0023] Specifically, the guide surface of the guide section 121 is an inclined surface and faces away from the access channel 11.

[0024] Specifically, the top portion of the ring 13 extends into the access channel 11 to form a pressure ring end 131.

[0025] Furthermore, the vertical surface of the pressure ring end 131 facing the access channel 11 is inclined to form an access port that is wider on the outside and narrower on the inside at the access end of the substrate 1.

[0026] Specifically, all inserts 21 are interference-fitted and placed between the base 12 and the ring 13.

[0027] Specifically, the outer ring surface of working ring 2 is a vertical surface.

[0028] In a preferred embodiment of the present invention, a cooling groove 132 is formed between the inner wall surface of the ring sleeve 13 and the outer ring surface of the working ring 2. After the cooling medium is introduced into the cooling groove 132, it can be used to cool the die, especially to cool the working ring 2, reduce the heat accumulation generated by the shell a during the stretching process after stamping, and alleviate the carbonization of the oil film on the working ring 2.

[0029] Specifically, the cooling groove 132 is formed on the inner wall of the ring 13.

[0030] Furthermore, sealant can be pre-applied to the insert 21 of the working ring 2 to ensure the sealing of the cooling groove 132.

[0031] It should be understood that the specific embodiments described above are only for explaining the present invention and are not intended to limit the present invention. Obvious variations or modifications derived from the spirit of the present invention are still within the protection scope of the present invention.

Claims

1. A die for stamping housings, characterized in that, include: A substrate (1) having an access channel (11) for accessing the housing (a) formed thereon; The working ring (2) is detachably disposed in the base (1) and close to the access end of the base (1). After the working ring (2) is fixed on the base (1), the part protruding in the access channel (11) is squeezed by the shell (a) during the stretching process. The working ring (2) is formed by multiple inserts (21) spliced ​​in a ring shape.

2. The die for stamping a housing according to claim 1, characterized in that, The base (1) includes a base (12) and a ring sleeve (13) that enclose and limit the working ring (2). The inner ring of the base (12) is raised upward to form a guide section (121). At the same time, the lower end of the working ring (2) is formed as a guide end (22). The working ring (2) is sleeved and positioned on the guide section (121) through the guide end (22). The inner wall surface of the ring sleeve (13) is attached to the outer ring surface of the working ring (2). The top end of the ring sleeve (13) forms a pressing end (131) that is pressed against the upper end of the working ring (2). The bottom end of the ring sleeve (13) is fixedly connected to the outer ring of the base (12).

3. The die for stamping a housing according to claim 2, characterized in that, The guide surface of the guide section (121) is inclined and faces away from the access channel (11).

4. The die for stamping a housing according to claim 2, characterized in that, The top portion of the ring (13) extends into the access channel (11) to form the pressure ring end (131).

5. The die for stamping a housing according to claim 4, characterized in that, The vertical surface of the pressure ring end (131) facing the access channel (11) is inclined to form an access port that is wider on the outside and narrower on the inside at the access end of the base (1).

6. The die for stamping a housing according to claim 2, characterized in that, All the inserts (21) are interference-fitted and placed between the base (12) and the ring (13).

7. The die for stamping a housing according to claim 2, characterized in that, The outer ring surface of the working ring (2) is a vertical surface.

8. The die for stamping a housing according to claim 2, characterized in that, A cooling groove (132) is formed between the inner wall surface of the ring sleeve (13) and the outer ring surface of the working ring (2).

9. The die for stamping a housing according to claim 8, characterized in that, The cooling groove (132) is formed on the inner wall of the ring (13).

Images