A bushing shaping die

Abstract

The utility model relates to the technical field of shaft sleeve forming, disclose a kind of shaft sleeve shaping die, including shaping female die, the shaping female die has the upper and lower through cavity for accommodating shaft sleeve, installation groove is set on the inner side wall of the shaping female die, the limit component that can reciprocate along the axial direction of installation groove is movably installed in the installation groove, the limit component includes elastic member and limit piece, the limit piece is fixedly connected with elastic member, the limit end of the limit piece extends into the cavity of shaping female die, the limit end of the limit piece is inclined wedge structure, the inclined surface of this limit end is upward for converting the horizontal movement of limit piece into the movement of shaft sleeve downward, the side away from the inclined surface is downward for limiting shaft sleeve.The utility model is limited to the upper end of the shaft sleeve shaped in the cavity of shaping female die by the cooperation of limit piece and elastic member, prevent the shaft sleeve from being taken out when shaping mandrel is withdrawn, so that the shaft sleeve is separated from the cavity.

Description

Technical Field

[0001] This utility model relates to the field of bushing forming technology, specifically a bushing forming mold. Background Technology

[0002] Rolled bushings are thin-walled sliding bearing components made of bearing material or its composite steel strip. For rolled bushings made of copper-steel bimetallic material, when shaping in the forming mold, a press is generally used to send the bushing into the mold cavity of the forming female mold, and a forming mandrel passes through the inner hole of the bushing. The bushing is made to meet the specified external dimensions and precision requirements by using an external clamping and internal expansion method.

[0003] However, in the existing forming process of rolled bushings, the friction between the forming mandrel and the inner wall of the bushing is relatively large. This friction is greater than the friction between the inner wall of the forming die cavity and the bushing. As a result, when the forming mandrel retracts, it is easy for it to cause the bushing to slide on the inner wall of the forming die, thus pulling the bushing and the forming mandrel out of the die cavity together. This makes it impossible to continue the bushing forming work. The bushing needs to be manually removed from the forming mandrel before the forming work can continue, which affects the work efficiency.

[0004] Therefore, there is an urgent need for a bushing forming mold that can constrain and limit the bushing when the forming mandrel shapes the bushing in the forming female mold cavity, so as to ensure the smooth progress of the bushing forming work and improve the forming efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide a bushing forming mold to solve the problems mentioned in the background art, so as to avoid the bushing being carried out of the forming mold cavity by the forming mandrel during the forming process.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A bushing forming die, comprising: A shaping female mold has a through cavity for accommodating a bushing; The mounting groove is formed on the inner sidewall of the shaping female mold; A limiting component, movably mounted within the mounting groove and configured to reciprocate along the axial direction of the mounting groove, the limiting component comprising: The elastic element is installed in the mounting groove; A limiting component is movably fitted into the mounting groove. The limiting component is fixedly connected to the elastic component, and the limiting end of the limiting component extends into the cavity of the shaping female mold. The limiting end of the limiting member is a wedge structure. The inclined surface of the limiting end faces upward to convert the downward movement of the bushing into the horizontal movement of the limiting member, and the side away from the inclined surface faces downward to limit the bushing.

[0007] As a further embodiment of this utility model: in order to facilitate the adjustment of the length of the portion of the limiting member extending into the mold cavity and to facilitate the removal and maintenance of the limiting component, the limiting component further includes a fixing bolt threaded into the mounting groove, and the fixing bolt is fixedly connected to the elastic member.

[0008] As a further aspect of this utility model: to ensure that the limiting end of the limiting member can fully extend into the mold cavity, the length of the limiting component is greater than the distance from the outer side wall to the inner side wall of the shaping female mold.

[0009] As a further embodiment of this utility model: in order to flexibly increase or decrease the limiting points according to the bushing size or shaping requirements, the limiting components correspond one-to-one with the mounting slots and each is configured to have at least one, and the multiple mounting slots are located at the same horizontal height.

[0010] As a further solution of this utility model: in order to ensure that the bushing can be completely placed into the bottom of the mold cavity and to avoid interference from the bushing by the limiting component during the shaping process, the distance from the mounting groove to the bottom of the shaping female mold is greater than the height of the bushing.

[0011] As a further embodiment of this utility model: to reduce the risk of the limiting component getting stuck in the mounting groove, the axial direction of the mounting groove is perpendicular to the inner wall of the shaping female mold.

[0012] As a further aspect of this utility model: to ensure that the elastic element can push the limiting end of the limiting element into the mold cavity, the elastic element is a compression spring.

[0013] As a further embodiment of this utility model: to prevent the bushing from being scratched by the sharp edge of the shaping mold when it is inserted and removed, the top and bottom circumferential edges of the shaping mold cavity are provided with rounded corners.

[0014] Compared with the prior art, the beneficial effects of this utility model are: This utility model has a simple structure, is easy to operate, and has a low cost. Because the limiting end of the limiting component is a wedge structure, the inclined surface of the limiting end faces upward, converting the downward pressure of the bushing into horizontal displacement, realizing the automatic avoidance of the limiting component when the bushing is placed into the shaping die. The side of the limiting end away from the inclined surface faces downward, providing a limit after the bushing is in place, ensuring that the bushing will not be pulled out by the shaping mandrel during the shaping process. The limiting component is fixedly connected to the elastic component, and the limiting component can automatically reset through the reset force of the elastic component. The limiting and avoidance process does not require manual adjustment, and the elastic component is fixedly connected to the fixing bolt, which facilitates the quick disassembly, maintenance and replacement of the limiting component. Attached Figure Description

[0015] Figure 1 This is a cross-sectional view of the present invention; In the diagram: 1-Shaping female mold, 2-Mounting groove, 3-Limiting component, 31-Elastic component, 32-Limiting component, 33-Fixing bolt. Detailed Implementation

[0016] 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the accompanying drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations.

[0018] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0019] Please see Figure 1 In this embodiment of the utility model, a bushing forming mold includes a forming female mold 1. The forming female mold 1 has a mold cavity for accommodating the bushing and shaping the outer wall of the bushing. The mold cavity is vertically connected and has an inlet at the top and an outlet at the bottom. The circumferential edges of the inlet and outlet of the mold cavity are rounded to provide guidance for the insertion and removal of the bushing, improve assembly efficiency, and prevent the bushing from being scratched by sharp edges, which would reduce the product yield.

[0020] An installation groove 2 is provided on the inner wall of the shaping female mold 1. The axial direction of the installation groove 2 is perpendicular to the inner wall of the shaping female mold 1, reducing the risk of jamming when the limiting component 3 moves within the installation groove 2. The distance from the bottom of the installation groove 2 to the bottom of the shaping female mold 1 is greater than the overall height of the bushing, ensuring that the bushing can be completely inserted into the bottom of the mold cavity of the shaping female mold 1, avoiding material discharge interference between the limiting component 3 and the bushing to be shaped. In this embodiment, the installation groove 2 is a through groove that penetrates the inner and outer walls of the shaping female mold 1, and the inner wall of the installation groove 2 near the outer wall of the shaping female mold 1 is threaded.

[0021] A limiting component 3 is installed in the mounting slot 2. The limiting component 3 includes an elastic element 31, a limiting element 32, and a fixing bolt 33. The fixing bolt 33 is threaded into the mounting slot 2, allowing the limiting component 3 to be quickly removed from the mounting slot 2 for easy replacement and maintenance. The length of the limiting element 32 extending into the cavity of the shaping female mold 1 can also be adjusted by rotating the fixing bolt 33. One end of the elastic element 31 is welded to the threaded end of the fixing bolt 33, and the other end of the elastic element 31 is welded to one end of the limiting element 32. The end of the limiting element 32 furthest from the outer wall of the shaping female mold 1 is the limiting end. The overall length of the limiting component 3 is greater than the distance from the outer wall to the inner wall of the shaping female mold 1, ensuring that the elastic element 31 naturally pushes the limiting end of the limiting element 32 into the cavity of the shaping female mold 1. The number of mounting slots 2 corresponds one-to-one with the number of limiting components 3. Multiple mounting slots 2 and at least one limiting component 3 can be configured, depending on the specific bushing size or shaping requirements. Multiple mounting slots 2 are located at the same horizontal height, allowing multiple limiting components 3 to simultaneously limit multiple points on the circumferential edge of the bushing. In this embodiment, two mounting slots 2 and two limiting components 3 are provided. The two mounting slots 2 are positioned opposite each other on the inner wall of the shaping die 1, ensuring symmetrical limiting forces on both sides of the upper end of the bushing and guaranteeing force balance on the bushing.

[0022] The limiting member 32 of the limiting assembly 3 can reciprocate along the axial direction of the mounting groove 2. The limiting end of the limiting member 32 is a wedge structure with the inclined surface facing upward. This can convert the downward pressing motion of the bushing against the limiting member 32 into the horizontal movement of the limiting member 32, thereby retracting the limiting end of the limiting member 32 into the mounting groove 2. This allows the limiting member 32 to automatically avoid the bushing when it is inserted. The side of the limiting end away from the inclined surface faces downward, which is used to limit the upper end of the bushing and prevent the bushing from being pulled out of the forming female mold 1 cavity. The elastic member 31 pushes the limiting end of the limiting member 32 into the forming female mold 1 cavity in its natural state, and retracts the limiting end of the limiting member 32 into the mounting groove 2 when compressed. In this embodiment, the elastic member 31 is specifically set as a compression spring.

[0023] This utility model has a novel structure and stable operation. When using this utility model, the limiting component 3 is embedded into the mounting groove 2, the fixing bolt 33 of the limiting component 3 is tightened and fixed in the mounting groove 2, and the fixing bolt 33 is rotated and adjusted according to the limiting requirements so that the length of the limiting end of the limiting component 32 extending into the mold cavity of the shaping female mold 1 is sufficient to meet the limiting requirements. At the same time, the limiting end of the limiting component 32 is adjusted so that the inclined surface faces upward and the side away from the inclined surface faces downward.

[0024] Insert the bushing into the inlet of the forming female mold cavity 1. When the lower end of the bushing contacts the inclined surface of the limiting end of the limiting member 32, the inclined surface converts the downward pressure of the bushing into the horizontal movement of the limiting member 32. The elastic member 31 is compressed and the limiting member 32 is drawn into the mounting groove 2. The bushing reaches the bottom of the forming female mold cavity 1. The restoring force of the elastic member 31 pushes the limiting end of the limiting member 32 into the forming female mold cavity 1. The side of the limiting end of the limiting member 32 away from the inclined surface limits the upper end of the bushing, restricting the upward movement of the bushing in the forming female mold cavity 1 and preventing the bushing from being pulled out when the forming mandrel retracts. After the forming is completed, rotate the fixing bolt 33 to remove the limiting component 3 from the mounting groove 2 and take it out.

[0025] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0026] Therefore, the above description is only a preferred embodiment of this application and is not intended to limit the scope of this application; that is, all equivalent modifications made in accordance with the scope of the claims of this application shall be within the protection scope of the claims of this application.

Claims

1. A bushing sizing die characterized by, include: The shaping female mold (1) has a through cavity for accommodating the bushing; The mounting groove (2) is formed on the inner side wall of the shaping female mold (1); A limiting component (3) is movably mounted within the mounting groove (2) and configured to reciprocate along the axial direction of the mounting groove (2). The limiting component (3) includes: The elastic element (31) is installed in the mounting groove (2); A limiting member (32) is movably fitted into the mounting groove (2). The limiting member (32) is fixedly connected to the elastic member (31). The limiting end of the limiting member (32) extends into the mold cavity of the shaping female mold (1). The limiting end of the limiting member (32) is a wedge structure. The inclined surface of the limiting end faces upward to convert the downward movement of the bushing into the horizontal movement of the limiting member (32), and the side away from the inclined surface faces downward to limit the bushing.

2. The bushing sizing die of claim 1, wherein: The limiting component (3) also includes a fixing bolt (33) threaded into the mounting groove (2), and the fixing bolt (33) is fixedly connected to the elastic element (31).

3. The bushing forming mold according to claim 1, characterized in that: The length of the limiting component (3) is greater than the distance from the outer side wall to the inner side wall of the shaping female mold (1).

4. The bushing sizing die of claim 1, wherein: The limiting component (3) corresponds one-to-one with the mounting slot (2) and each is configured to have at least one, and the plurality of mounting slots (2) are located at the same horizontal height.

5. The bushing forming mold according to claim 1, characterized in that: The distance from the mounting groove (2) to the bottom of the shaping female mold (1) is greater than the height of the bushing.

6. The bushing forming mold according to claim 1, characterized in that: The axial direction of the mounting groove (2) is perpendicular to the inner wall of the shaping female mold (1).

7. The bushing forming mold according to claim 1, characterized in that: The elastic element (31) is a compression spring.

8. The bushing forming mold according to claim 1, characterized in that: The top and bottom circumferential edges of the shaping female mold (1) cavity are rounded.

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