Jig for metal pressure shell

Abstract

The utility model relates to a jig for a metal pressing shell, which comprises a base for installing a supporting assembly, a first die body, a second die body and a third die body which can adjustably construct a stamping shell cavity are supported on the base through the supporting assembly, and the first die body is suspended above the second die body; the third die body surrounds the outer side of the second die body in a manner that the third die body can axially ascend and descend; the first die body is matched with the second die body to clamp a to-be-stamped plate body in an aligned mode according to an axial lifting mode so as to position a stamping deformation station, and the third die body is lifted in the axial direction to define a stamping shell cavity together with the first die body and the second die body. According to the utility model, efficient and lossless shell mold separation treatment and accurate stamping positioning of a formed workpiece can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of shell pressing tooling, in particular to a jig for metal shell pressing. Background Art

[0002] Led by the rapid development of new energy vehicles, electrification has become the main trend of global automobile development. Power batteries are the power source that provides them with power. Power batteries are the core components of new energy vehicles and an important direction for future energy transformation. In the battery manufacturing process, the production volume of battery metal shells, which are important components of batteries, is also huge. Battery metal shells are usually made by die stretching. During the manufacturing process, metal sheets are first processed as the raw materials for the battery metal shell, and then the metal sheets are extruded and stretched to form the battery shell.

[0003] However, after the existing battery metal shell is stamped and formed, it is rather troublesome to remove the stamped finished parts from the stamping die, which affects the production efficiency of the battery metal shell. Although the existing technology supports the elastic bottom plate to eject the molded shell, the ejection process is very likely to cause wear and deformation of the shell, thereby affecting the quality of the finished shell. In addition, during the stamping process, the plate will be subjected to a large force and is prone to displacement, resulting in an insufficient stamping effect. The above problems will greatly reduce the efficiency and quality of the metal plate body in the shell compression molding process, and cannot meet the needs of large-scale high-quality production. Utility Model Content

[0004] The utility model aims to provide a metal shell pressing jig which can realize efficient and non-destructive shell-mold separation processing and accurate positioning of stamping forming processing of the formed workpiece by changing the movable relationship and built-in structure of the stamping shell cavity forming mold body during the shell pressing process, so as to solve the problems that the existing shell pressing forming equipment cannot accurately locate the processing position of the sheet material to be stamped, and the workpiece after shell pressing is difficult to disassemble and separate, and is prone to wear and deformation, which affects the quality of the finished product and the processing efficiency.

[0005] The technical solution adopted by the utility model is: a jig for metal shell pressing, comprising a base for installing a support assembly, on which a first mold body, a second mold body and a third mold body that can adjustably construct a stamping shell cavity are supported by the support assembly, wherein the first mold body is suspended above the second mold body; the third mold body surrounds the outer side of the second mold body in a manner that allows axial lifting and lowering; the first mold body cooperates with the second mold body in a manner that allows axial lifting and lowering to clamp the plate body to be stamped in a position to locate the stamping deformation station, and the third mold body is lifted axially to define the stamping shell cavity together with the first mold body and the second mold body.

[0006] According to a preferred embodiment, the first mold body is suspended above the second mold body by the first lifting mechanism of the support assembly in a manner to define the inner contour of the stamping shell cavity, and the first mold body can be axially lifted and lowered under the drive of the first lifting mechanism to change the distance between the lower end surface of the first mold body and the upper end surface of the second mold body.

[0007] According to a preferred embodiment, the second mold body is supported on the base by the second lifting mechanism of the support assembly in a manner of defining the outer bottom surface contour of the stamping shell cavity; a plurality of slots are circumferentially spaced apart on the upper end surface of the second mold body, and elastic negative pressure suction heads are arranged in the slots; the axial lower end of the elastic negative pressure suction head is connected to the vacuum generating unit via an air guide tube passing through the main body of the second mold body.

[0008] According to a preferred embodiment, the elastic negative pressure suction head includes an inverted frustum head body, a telescopic tube and a spring, wherein a channel for air flow is opened in the inverted frustum head body, and its axial lower end is connected to the air guide tube through the telescopic tube; the tube body of the telescopic tube is also sleeved with a spring to limit its initial length.

[0009] According to a preferred embodiment, the third mold body is sleeved on the outside of the second mold body in a manner of defining the arc-shaped turning edge and the outer cavity wall of the stamping shell cavity, so that the third mold body can perform axial lifting and lowering movement under the action of the third lifting mechanism of the support assembly, and then when the third mold body is lifted and lowered and sleeved on the first mold body, it and the second mold body jointly define the outer contour of the stamping shell cavity.

[0010] According to a preferred embodiment, a spiral coil capable of adjusting the temperature of the inner surface of the third mold body is provided inside the third mold body, and the input end and the output end of the spiral coil are both connected to the low-temperature refrigeration unit through a hose.

[0011] According to a preferred embodiment, the first lifting mechanism includes a first hydraulic column and a top plate parallel to the base, and at least four of the first hydraulic columns are respectively supported at four corners of the top plate in a manner of stably supporting the top plate and driving the top plate to undergo axial lifting and lowering.

[0012] According to a preferred embodiment, the second hydraulic column of the second lifting mechanism is supported on the base, and the axial upper end of the second hydraulic column supports the second mold body through an extension platform.

[0013] According to a preferred embodiment, a plurality of the third lifting mechanisms are circumferentially spaced and arranged in a manner of surrounding the second lifting mechanism.

[0014] According to a preferred embodiment, an interception plate is also connected to the first hydraulic column, and the first mold body can be axially lifted and lowered in a manner of penetrating the interception plate, so that the interception plate can prevent the stamping shell attached to the surface of the first mold body from being lifted and lowered synchronously when the first mold body rises following the extension of the first hydraulic column.

[0015] The beneficial effects of the utility model are:

[0016] The shell compression jig constructed in the present application has a simple structure, and the stamping movement mode is different from the existing stamping equipment, so that the shell workpiece after forming can be better and effectively separated from the mold body, improving the efficiency and quality of shell-mold separation, and avoiding the defects of the existing upper separation structure that easily cause surface wear and deformation of the shell workpiece. The first mold body, the second mold body and the third mold body set in the present application can cooperate with each other to construct a forming shell cavity that can be formed and disassembled through multi-mode multi-directional movement, thereby ensuring the simplicity of the mold cavity construction structure while improving the stability of the mold cavity construction, thereby ensuring that the shell after stamping has relatively stable and consistent dimensional parameters. The present application improves the efficiency of mold cavity forming and stamping forming as well as the efficiency of mold-shell separation through the bidirectional movement of the first mold body and the third mold body, so that the jig can efficiently perform stamping and forming processing of large quantities of shell workpieces according to demand. The coaxial first mold body and the second mold body set in the present application can perform highly stable clamping and positioning of the sheet to be stamped before stamping, thereby ensuring the accuracy of the sheet deformation positioning during the stamping process, and then ensuring the dimensional accuracy of the shell after forming, reducing the amount of defective workpieces produced, and improving production quality and yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a preferred metal shell pressing jig proposed by the utility model;

[0018] Figure 2 It is a schematic structural diagram of a preferred metal shell pressing jig proposed by the utility model when the die body is pressed together;

[0019] Figure 3 It is a structural schematic diagram of the A portion of a preferred metal shell pressing jig proposed by the utility model.

[0020] Reference numerals list

[0021] 1: base; 2: support assembly; 3: first mold body; 4: second mold body; 5: third mold body; 21: first lifting mechanism; 22: second lifting mechanism; 23: third lifting mechanism; 41: slot; 42: elastic negative pressure suction head; 43: air guide tube; 44: vacuum generating unit; 51: spiral coil; 52: hose; 53: low-temperature refrigeration unit; 211: first hydraulic column; 212: top plate; 213: intercepting plate; 221: second hydraulic column; 222: extension table; 421: inverted frustum head body; 422: telescopic tube; 423: spring. DETAILED DESCRIPTION

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the utility model will be briefly introduced below in combination with the drawings and the descriptions of the embodiments or the prior art. Obviously, the following descriptions of the structures of the drawings are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] The technical solution provided by the present invention will be described in detail below by way of examples with reference to the accompanying drawings. It should be noted that the description of these examples is used to help understand the present invention, but does not constitute a limitation of the present invention. In some examples, some implementation methods are not described or are not described in detail because they belong to existing or conventional technologies.

[0024] In addition, the technical features recorded in this article, or the steps in all methods or processes disclosed, except for mutually exclusive features and / or steps, can also be combined in any suitable manner in one or more embodiments. For those skilled in the art, it is easy to understand that the steps or operation sequence of the methods related to the embodiments provided herein can also be changed. Any order in the drawings and embodiments is only for illustrative purposes and does not imply a requirement to follow a certain order unless it is explicitly stated that a certain order is required.

[0025] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, under reasonable circumstances (not constituting a self-contradiction), include direct and indirect connections (couplings).

[0026] The following is a detailed description with reference to the accompanying drawings.

[0027] Example 1

[0028] The present application provides a jig for metal compression shells, which includes a base 1, a support assembly 2, a first mold body 3, a second mold body 4 and a third mold body 5.

[0029] according to Figure 1-3 A specific embodiment is shown, in which a support assembly 2 is installed on a base 1. A first mold body 3, a second mold body 4 and a third mold body 5 that can adjustably construct a stamping shell cavity are supported on the base 1 by the support assembly 2. The first mold body 3 is suspended above the second mold body 4. The third mold body 5 surrounds the outer side of the second mold body 4 in a manner that allows axial lifting and lowering. The first mold body 3 cooperates with the second mold body 4 to clamp the plate body to be stamped in a manner that allows axial lifting and lowering to occur, so as to position the stamping deformation station. The third mold body 5 is lifted axially and defines a stamping shell cavity together with the first mold body 3 and the second mold body 4. The shell pressing jig constructed in the present application has a simple structure, and the stamping movement mode is different from the existing stamping equipment, so that the shell workpiece after forming can be better and effectively separated from the mold body, thereby improving the efficiency and quality of shell mold separation, and avoiding the defects of the existing upper separation structure that easily causes surface wear and deformation of the shell workpiece. The first mold body 3, the second mold body 4 and the third mold body 5 provided in the present application can cooperate with each other to construct a forming shell cavity that can be formed and disassembled through multi-directional movement of multiple mold bodies, thereby ensuring the simplicity of the mold cavity construction structure while improving the stability of the mold cavity construction, thereby ensuring that the shell after stamping has relatively stable and consistent dimensional parameters. The present application improves the efficiency of mold cavity forming and stamping forming as well as the efficiency of mold shell separation through the bidirectional movement of the first mold body 3 and the third mold body 5, so that the jig can efficiently perform stamping and forming processing of large quantities of shell workpieces according to demand. The coaxial first mold body 3 and the second mold body 4 provided in the present application can perform highly stable clamping and positioning of the sheet to be stamped before stamping, thereby ensuring the accuracy of the deformation positioning of the sheet during the stamping process, and then ensuring the dimensional accuracy of the shell after forming, reducing the amount of defective workpieces produced, and improving production quality and yield.

[0030] Preferably, the support assembly 2 includes a first lifting mechanism 21, a second lifting mechanism 22 and a third lifting mechanism 23. The first lifting mechanism 21, the second lifting mechanism 22 and the third lifting mechanism 23 are all detachably supported on the base 1 in sections. Preferably, the first lifting mechanism 21 includes a first hydraulic column 211, a top plate 212 parallel to the base 1 and an interception plate 213. Preferably, at least four first hydraulic columns 211 are supported at four corners of the top plate 212 in a manner of stably supporting the top plate 212 and driving the top plate 212 to rise axially. Preferably, the first hydraulic column 211 is also connected to an interception plate 213. Further preferably, the first mold body 3 can be axially lifted and lowered in a manner of penetrating the interception plate 213, so that the interception plate 213 can prevent the stamping shell attached to the surface of the first mold body 3 from rising synchronously when the first mold body 3 follows the extension of the first hydraulic column 211, thereby realizing mold shell separation. Preferably, the second hydraulic column 221 of the second lifting mechanism 22 is supported on the base 1. Preferably, the axial upper end of the second hydraulic column 221 supports the second mold body 4 through an extension platform 222. Preferably, a plurality of third lifting mechanisms 23 are circumferentially spaced in a manner surrounding the second lifting mechanism 22. The support assembly 2 provided in the present application can independently control the axial lifting and lowering of the first mold body 3, the second mold body 4 and the third mold body 5 as required, thereby realizing the molding and decomposition of the mold cavity, and can also cooperate with each other to realize the shell mold separation process. The interception plate 213 provided in the present application can limit the maximum rising distance that the formed shell workpiece can follow the first mold body 3, thereby providing a relative force by limiting the rising movement of the shell workpiece during the further rising of the first mold body 3, thereby separating the shell workpiece coated on the surface of the first mold body 3.

[0031] Preferably, the first mold body 3 is suspended above the second mold body 4 by the first lifting mechanism 21 of the support assembly 2 in a manner that defines the inner contour of the stamping shell cavity. Further preferably, the first mold body 3 can be axially lifted and lowered under the drive of the first lifting mechanism 21 to change the distance between the lower end surface of the first mold body 3 and the upper end surface of the second mold body 4. The first mold body 3 provided in the present application can be axially lifted and lowered under the drive of the first lifting mechanism 21, thereby defining the inner cavity volume of the shell cavity and realizing the separation of the shell molds.

[0032] Preferably, the second mold body 4 is supported on the base 1 by the second lifting mechanism 22 of the support assembly 2 in a manner that defines the outer bottom surface contour of the stamping shell cavity. Preferably, a plurality of slots 41 are provided in an annular manner in the upper end surface of the second mold body 4. Further preferably, an elastic negative pressure suction head 42 is provided in the slot 41. Specifically, the slot 41 is provided in a manner that matches the outer contour of the elastic negative pressure suction head 42 and the spring 423. Preferably, the axial lower end of the elastic negative pressure suction head 42 is connected to the vacuum generating unit 44 through an air guide tube 43 that is penetrated in the main body of the second mold body 4. Preferably, the elastic negative pressure suction head 42 comprises an inverted frustum head body 421, a telescopic tube 422 and a spring 423. Preferably, a channel for air flow is provided in the inverted frustum head body 421. Preferably, the axial lower end of the inverted frustum head body 421 is connected to the air guide tube 43 through the telescopic tube 422. Preferably, the tube body of the telescopic tube 422 is also sleeved with a spring 423 that limits its initial length. Preferably, the axial lower end of the spring 423 is connected to the inner wall of the slot 41. Specifically, a protrusion that limits the installation position of the spring 423 is provided on the inner wall of the slot 41. The elastic negative pressure suction head 42 provided in the present application can form a negative pressure suction force under the suction action of the vacuum generating unit 44, so as to effectively adsorb and position the sheet to be stamped on the upper surface of the second mold body 4, avoiding the problem of the sheet to be stamped being offset in the subsequent process, thereby ensuring the accuracy of subsequent stamping and improving the stamping quality.

[0033] Preferably, the third mold body 5 is sleeved on the outside of the second mold body 4 in a manner that defines the arc-shaped turning edge and the outer cavity wall of the stamping shell cavity, so that the third mold body 5 can perform axial lifting and lowering movement under the action of the third lifting mechanism 23 of the support assembly 2, and then when the third mold body 5 is lifted and lowered and sleeved on the first mold body 3, it and the second mold body 4 jointly define the outer contour of the stamping shell cavity. Preferably, a spiral coil 51 capable of adjusting the temperature of its inner surface is provided in the third mold body 5. Further preferably, the input end and the output end of the spiral coil 51 are both connected to the low-temperature refrigeration unit 53 through a hose 52. Preferably, the low-temperature refrigeration unit 53 includes a low-temperature cooling cavity, a refrigeration plate, and a suction pump pipe provided in the low-temperature cooling cavity. The output end of the suction pump pipe is connected to the hose 52. The present application cools and shrinks the shell workpiece formed by limiting the position by arranging the spiral coil 51 in the third mold body 5, so as to facilitate the separation of the shell workpiece from its inner wall, thereby improving the separation efficiency and convenience between the third mold body 4 and the shell workpiece.

[0034] The working principle of this application is:

[0035] According to the parameters of the shell cavity that needs to be pressed, select the matching first mold body 3, second mold body 4 and third mold body 5, and install the first mold body 3, second mold body 4 and third mold body 5 to the moving ends of the first lifting mechanism 21, the second lifting mechanism 22 and the third lifting mechanism 23 respectively. Position the sheet to be stamped that has been cut and pre-processed for stamping on the second mold body 4. Turn on the vacuum generating unit 44 to effectively limit the position of the sheet to be stamped on the second mold body 4 by negative pressure adsorption. The first mold body 3 is lowered by controlling the shortening of the first lifting mechanism 21, so that the lower end of the axis of the first mold body 3 is against the upper surface of the sheet to be stamped, and then the first mold body 3 and the second mold body 4, which are coaxial and arranged on both sides of the sheet to be stamped, clamp and position the sheet to be stamped. Then the third lifting mechanism 23 is controlled to drive the third die 5 to move upward, so that the third die 5 gradually moves from the outer side of the second die 4 to the molding cavity section defined by its upper end body to the outer side of the first die 3, so as to define the shell cavity side wall in cooperation with the first die 3, so that the third die 5 gradually constructs a more complete molding shell cavity during the rising process, and fills the molding shell cavity by forcing the sheet to be stamped to undergo a specific deformation to form a shell structure. After the shell cavity molding movement is completed, a low-temperature heat transfer liquid below room temperature is continuously introduced into the spiral coil 51, so that it cools the formed shell workpiece through the third die 5, so that the shell workpiece cools and shrinks to release the state of being attached to the inner wall of the third die 5, and the height of the third die 5 is lowered to separate and expose the shell workpiece. The first die 3 is raised, so that the shell workpiece is separated from the first die 3, and when the shell workpiece is covered on the first die 3, the continuous rise of the first die 3 and the blocking of the interception plate 213 can effectively realize the shell mold separation.

[0036] The present utility model is not limited to the above optional implementation modes. Anyone can derive other various forms of products under the inspiration of the present utility model. However, no matter what changes are made in the shape or structure, all technical solutions that fall within the scope of the claims of the present utility model fall within the protection scope of the present utility model. Those skilled in the art should understand that the present utility model specification and its drawings are illustrative and do not constitute limitations on the claims. The protection scope of the present utility model is defined by the claims and their equivalents. Throughout the text, the features guided by "preferably" are only an optional method and should not be understood as having to be set. Therefore, the applicant reserves the right to abandon or delete the relevant preferred features at any time.

Claims

1. A jig for metal shell compression, comprising a base (1) for mounting a support assembly (2), characterized in that: A first mold body (3), a second mold body (4) and a third mold body (5) capable of adjustably constructing a stamping shell cavity are supported on the base (1) through the support assembly (2), wherein: The first mold body (3) is suspended above the second mold body (4); the third mold body (5) surrounds the outer side of the second mold body (4) in a manner that allows axial lifting and lowering; The first mold body (3) cooperates with the second mold body (4) in an axial lifting manner to clamp the plate body to be stamped so as to locate the stamping deformation station, and the third mold body (5) is lifted axially to define a stamping shell cavity together with the first mold body (3) and the second mold body (4).

2. The metal shell pressing tool according to claim 1, characterized in that: The first mold body (3) is suspended above the second mold body (4) by the first lifting mechanism (21) of the support assembly (2) in a manner that defines the inner contour of the stamping shell cavity. The first mold body (3) can be axially lifted and lowered under the drive of the first lifting mechanism (21) to change the distance between the lower end surface of the first mold body (3) and the upper end surface of the second mold body (4).

3. The metal shell pressing tool according to claim 2, characterized in that: The second mold body (4) is supported on the base (1) by the second lifting mechanism (22) of the support assembly (2) in a manner of defining the outer bottom surface contour of the stamping shell cavity; A plurality of slots (41) are provided at intervals in an annular direction on the upper end surface of the second mold body (4), and elastic negative pressure suction heads (42) are provided in the slots (41); The axial lower end of the elastic negative pressure suction head (42) is connected to the vacuum generating unit (44) via an air guide tube (43) penetrating the main body of the second mold body (4).

4. The metal shell pressing tool according to claim 3, characterized in that: The elastic negative pressure suction head (42) comprises an inverted frustum head body (421), a telescopic tube (422) and a spring (423), wherein: The inverted frustum head body (421) is provided with a passage for air flow, and its axial lower end is connected to the air guide pipe (43) via a telescopic tube (422); The body of the telescopic tube (422) is also sleeved with a spring (423) for limiting its initial length.

5. The metal shell pressing tool according to claim 4, characterized in that: The third mold body (5) is sleeved on the outer side of the second mold body (4) in a manner of defining an arc-shaped turning edge and an outer cavity wall of the stamping shell cavity, so that the third mold body (5) can perform axial lifting and lowering movement under the action of the third lifting mechanism (23) of the support assembly (2), and further, when the third mold body (5) is lifted and lowered and sleeved on the first mold body (3), it and the second mold body (4) jointly define the outer contour of the stamping shell cavity.

6. The metal shell pressing tool according to claim 5, characterized in that: The third mold body (5) is provided with a spiral coil (51) capable of adjusting the temperature of its inner surface, and the input end and the output end of the spiral coil (51) are both connected to a low-temperature refrigeration unit (53) through a hose (52).

7. The metal shell pressing tool according to claim 6, characterized in that: The first lifting mechanism (21) comprises a first hydraulic column (211) and a top plate (212) parallel to the base (1). At least four of the first hydraulic columns (211) are respectively supported at four corners of the top plate (212) in a manner of stably supporting the top plate (212) and driving the top plate (212) to move up and down axially.

8. The metal shell pressing tool according to claim 7, characterized in that: The second hydraulic column (221) of the second lifting mechanism (22) is supported on the base (1). Furthermore, the axial upper end of the second hydraulic column (221) supports the second mold body (4) via an extension platform (222).

9. The metal shell pressing tool according to claim 8, characterized in that: A plurality of the third lifting mechanisms (23) are arranged at circumferential intervals in a manner of surrounding the second lifting mechanism (22).

10. The metal shell pressing tool according to claim 9, characterized in that: The first hydraulic column (211) is also connected to an interception plate (213), and the first mold body (3) can be axially raised and lowered in a manner of penetrating the interception plate (213), so that when the first mold body (3) rises following the extension of the first hydraulic column (211), the interception plate (213) can prevent the stamping shell attached to the surface of the first mold body (3) from rising synchronously.

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