Multi-station positioning jig for wire drawing processing of watchcase

Abstract

The utility model discloses a meter case wire drawing processing multi-station positioning jig which comprises a mounting seat and supporting blocks arranged on the mounting seat at intervals, a positioning reference seat is arranged on the two supporting blocks, a mounting cavity is defined by the mounting seat, the supporting blocks and the positioning reference seat, a rotating air cylinder is arranged in the mounting cavity, and the rotating air cylinder is arranged in the mounting cavity. A T-shaped head is mounted at the end part, extending out of the positioning reference seat, of a rotating shaft of the rotating cylinder; positioning pins located on the two sides of the T-shaped head are arranged on the positioning reference base at intervals; a positioning tool is detachably mounted on the positioning reference seat, and a positioning hole matched with the positioning pin and a strip-shaped hole matched with the T-shaped head are formed in the positioning tool; the positioning tool is provided with at least four positioning parts, and the positioning parts are used for positioning the watchcase; rapid replacement of tools matched with watchcase products of different models is achieved, a plurality of watchcase product positioning structures are arranged on the tool, and surface wire drawing machining of the multiple watchcase products is completed when the tool rotates by 360 degrees.

Description

Technical Field

[0001] This utility model relates to the field of fixture technology, and in particular to a multi-station positioning fixture for wire drawing of watch cases. Background Technology

[0002] like Figure 1 The image shows a watch case product with an arc-shaped section and a connecting section. The final process involves wire drawing, which requires positioning and clamping the watch case. Since the arc, length, and other dimensions of different watch case models vary, it is difficult to use a single fixture to position and clamp different models. Therefore, a fixture for positioning the watch case is needed that allows for quick changeover.

[0003] In addition, during the wire drawing process, the wire is mainly used to continuously process the watch case by rotating at an angle. Therefore, it is possible to consider designing the tooling to process multiple watch case products at the same time to improve processing efficiency. Utility Model Content

[0004] (I) Technical Issues

[0005] The purpose of this utility model is to provide a multi-station positioning fixture for watch case brushing, which enables quick tooling change to adapt to different models of watch case products, and sets multiple watch case product positioning structures on the fixture, so as to complete the surface brushing of multiple watch case products when the fixture is rotated 360°.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A multi-station positioning fixture for wire drawing of watch cases includes a mounting base and support blocks spaced apart on the mounting base. Positioning reference seats are mounted on the two support blocks. The mounting base, support blocks, and positioning reference seats together form a mounting cavity. A rotary cylinder is installed within the mounting cavity. A T-head is mounted on the end of the rotary cylinder's shaft extending beyond the positioning reference seat. Positioning pins are spaced apart on both sides of the T-heads on the positioning reference seat. A positioning fixture is detachably mounted on the positioning reference seat. The positioning fixture has positioning holes that mate with the positioning pins and strip holes that mate with the T-heads. The positioning fixture has at least four positioning parts for positioning the watch case.

[0009] Preferably, the rotation angle of the rotary cylinder is 0° or 90°.

[0010] Preferably, the length of the T-head is greater than the width of the strip hole and less than the length of the strip hole.

[0011] Preferably, the positioning fixture includes a base plate, at least four positioning parts are sequentially fixed to each other and their bottoms are fixed to the base plate to form a cavity, the positioning parts are provided with threaded holes and locking screws connected to the threaded holes, the head of the locking screw is placed in the cavity, and the end of the locking screw passes through the positioning part to connect to the watch case; the positioning hole and the strip hole are provided on the base plate.

[0012] Preferably, the base plate and the positioning part are integrally formed.

[0013] Preferably, the positioning part includes an arc-shaped part and connecting parts located at both ends of the arc-shaped part. The middle part of the arc-shaped part is provided with a first positioning step, and the two ends of the arc-shaped part are respectively provided with second positioning steps at the connection points with the connecting parts. The two ends of the arc-shaped part are provided with limiting holes for positioning the watch case at the connection points with the connecting parts.

[0014] Preferably, the positioning part is provided with notches and grooves located at the first positioning step and the second positioning step, respectively, and the notches and grooves extend from the first positioning step and the second positioning step toward the end face of the positioning part.

[0015] Preferably, a precision divider is connected to the bottom of the mounting base.

[0016] (III) Beneficial Effects

[0017] The positioning fixture can be disassembled relative to the positioning reference base. Initial positioning is achieved by inserting a positioning pin into the positioning hole on the positioning fixture. The T-head extends out of the strip hole and the rotary cylinder drives it to rotate, pressing the positioning fixture onto the positioning reference base. During disassembly, the rotary cylinder only needs to be rotated in the opposite direction to align the T-head with the strip hole. This enables quick assembly and disassembly of the positioning fixture on the positioning reference base. For different models of watch case products, the positioning fixture only needs to ensure that the positioning hole and strip hole are the same size to keep other structures unchanged. The positioning fixture can be quickly switched to adapt to different models of watch case products for clamping and wire drawing processing.

[0018] Meanwhile, at least four positioning parts are set on each positioning fixture to achieve positioning and clamping of watch case products, so that multiple watch case products can complete wire drawing after the entire fixture is rotated 360°, thereby improving processing efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the watch case structure;

[0020] Figure 2 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0021] Figure 3 This is a schematic diagram of the basic structure in an embodiment of the present utility model;

[0022] Figure 4 This is a first-view three-dimensional structural diagram of the positioning tooling in an embodiment of this utility model;

[0023] Figure 5 This is a second-view three-dimensional structural diagram of the positioning tooling in an embodiment of this utility model;

[0024] exist Figures 1 to 5 In the diagram, the correspondence between component names or lines and the drawing numbers is as follows:

[0025] Mounting base 1, support block 2, positioning reference base 3, mounting cavity 4, rotary cylinder 5, T-head 6, positioning pin 7, positioning fixture 8, positioning hole 9, strip hole 10, positioning part 11, base plate 12, cavity 13, threaded hole 14, locking screw 15, arc-shaped part 16, connecting part 17, first positioning step 18, second positioning step 19, limiting hole 20, notch groove 21. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] See Figures 2-5As shown in the figure, an embodiment of this utility model proposes a multi-station positioning fixture for wire drawing of watch cases. The fixture is used to install in the wire drawing equipment. Specifically, during the wire drawing process, the entire fixture can rotate, allowing the watch case to rotate relative to the wire drawing ribbon or wire drawing rod, thereby achieving wire drawing of the entire surface of the watch case. Specifically, it includes a mounting base 1 and support blocks 2 spaced apart on the mounting base 1. Positioning reference seats 3 are mounted on the two support blocks 2. The mounting base 1, the support blocks 2, and the positioning reference seats 3 together form a mounting cavity 4. A rotary cylinder 5 is installed inside the mounting cavity 4. A T-shaped head 6 is installed at the end of the rotary cylinder 5 extending beyond the positioning reference seat 3. The mounting base 1, support blocks 2, positioning reference seats 3, and rotary cylinder 5 constitute the basic structure. The basic structure remains unchanged when adapting to different watch cases; only the tooling for clamping the watch case needs to be replaced according to the adaptation requirements. Specifically, positioning pins 7 are spaced apart on both sides of the T-head 6 on the positioning reference base 3. At the same time, a positioning fixture 8 is detachably installed on the positioning reference base 3. The positioning fixture 8 has positioning holes 9 that cooperate with the positioning pins 7 and strip holes 10 that cooperate with the T-head 6. By cooperating with the positioning pins 7 and the positioning holes 9, the positioning fixture 8 is aligned when it is initially installed on the positioning reference base 3, so as to ensure that the T-head 6 extends out of the strip holes 10. Then, the rotary cylinder 5 rotates the T-head 6 to press the positioning fixture 8. Thus, during the rotation of the positioning fixture 8 with the foundation structure, the positioning pins 7 bear the force to ensure that the positioning fixture 8 can rotate completely synchronously.

[0028] When it is necessary to change the positioning fixture 8, rotate the rotary cylinder 5 in the opposite direction so that the T-head 6 can exit from the slot 10. For different models of positioning fixture 8, it is only necessary to ensure that the positioning hole 9 and the slot 10 are the same size to achieve quick switching.

[0029] In order to perform surface brushing on multiple watch cases in one 360° rotation, at least four positioning parts 11 are provided on the positioning fixture 8. The positioning parts 11 are used to position the watch cases, and the number of positioning parts 11 can be determined according to the size of the watch cases.

[0030] To facilitate rapid switching between the clamping and releasing states of the T-head 6, the rotation angle of the rotary cylinder 5 is set to 0° or 90°. At 0°, the T-head 6 is in the releasing state and can exit through the slot 10. When rotated to 90°, the T-head 6 passes through the slot 10 and rotates 90° to clamp the positioning fixture 8, and cannot exit relative to the slot 10, thus ensuring the stability of the limit position.

[0031] To ensure that the T-head 6 and the strip hole 10 can maintain stability in both the pressed and released states, the length of the T-head 6 is greater than the width of the strip hole 10 and less than the length of the strip hole 10.

[0032] The positioning fixture 8 needs to have good load-bearing capacity and achieve good positioning of the watch case. Specifically, the positioning fixture 8 includes a base plate 12, at least four positioning parts 11 are sequentially fixed at the top and bottom to the base plate 12 to form a cavity 13. Each positioning part 11 has a threaded hole 14 and a locking screw 15 connected to the threaded hole 14. The head of the locking screw 15 is placed in the cavity 13, and the end of the locking screw 15 passes through the positioning part 11 and connects to the watch case. The cavity 13 can accommodate the rotation of the locking screw 15. By engaging with the threaded hole 14 and extending its end, the locking screw 15 is locked onto the watch case, thus ensuring that the watch case is tightly attached to the positioning part 11 to meet the positioning requirements and prevents loosening during the wire drawing process.

[0033] The base plate 12 and the positioning part 11 are integrally formed structures, and the overall positioning fixture 8 has good load-bearing strength.

[0034] The positioning hole 9 and the strip hole 10 are provided on the base plate 12. The base plate 12 and the positioning reference block achieve planar cooperation to ensure the reliable positioning of the entire positioning fixture 8 relative to the positioning reference seat 3.

[0035] Specifically, the positioning part 11 includes an arc-shaped part 16 and connecting parts 17 located at both ends of the arc-shaped part 16. The middle part of the arc-shaped part 16 is provided with a first positioning step 18, and the two ends of the arc-shaped part 16 are respectively provided with second positioning steps 19 at the connection points with the connecting parts 17. The arc-shaped part 16 and the connecting parts 17 are used to position and fit the inner wall of the watch case, and the first positioning step 18 and the second positioning step 19 form a limiting support for the bottom of the watch case.

[0036] Limiting holes 20 are provided at the connection points between the arc-shaped portion 16 and the connecting portion 17 for positioning the watch case. These holes accommodate the protruding structures on the inner wall of the watch case, thereby ensuring that the watch case is reliably positioned and limited in the positioning portion 11. During the wire drawing process, the watch case will not slide relative to the positioning portion 11.

[0037] Meanwhile, notches 21 are provided on the positioning part 11 at intervals at the first positioning step 18 and the second positioning step 19 respectively. The notches 21 extend from the first positioning step 18 and the second positioning step 19 to the end face of the positioning part 11. The notches 21 avoid the turning part of the inner wall of the watch case, further ensuring that the inner wall of the watch case and the positioning part 11 fit tightly together.

[0038] Therefore, by quickly changing the positioning fixture 8, it can be adapted to different models of watch cases for positioning, meet the positioning requirements of wire drawing processing, and can position multiple watch cases at the same time, and complete the surface wire drawing processing of multiple watch cases after rotating 360°.

[0039] Therefore, a precision divider is connected to the bottom of the mounting base 1. The rotation angle of the positioning fixture 8 is adjusted by rotating the precision divider, thereby realizing the precise angle rotation process. Specifically, the drive motor and other components connected to the precision divider are integrated in the wire drawing equipment.

[0040] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0042] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A multi-station positioning fixture for wire drawing of watch cases, characterized in that: It includes a mounting base and support blocks spaced apart on the mounting base. Positioning reference seats are mounted on the two support blocks. The mounting base, the support blocks and the positioning reference seats together form a mounting cavity. A rotary cylinder is installed in the mounting cavity. A T-shaped head is installed at the end of the rotary cylinder that extends out of the positioning reference seat. The positioning reference base is provided with positioning pins spaced apart on both sides of the T-shaped head; The positioning reference base is detachably mounted with a positioning fixture, which has a positioning hole that mates with the positioning pin and a strip hole that mates with the T-head. The positioning fixture is provided with at least 4 positioning parts, which are used to position the watch case.

2. The multi-station positioning fixture for wire drawing of watch cases according to claim 1, characterized in that: The rotation angle of the rotary cylinder is 0° or 90°.

3. The multi-station positioning fixture for wire drawing of watch cases according to claim 2, characterized in that: The length of the T-head is greater than the width of the strip hole, but less than the length of the strip hole.

4. The multi-station positioning fixture for wire drawing of watch cases according to claim 3, characterized in that: The positioning fixture includes a base plate, at least four positioning parts are sequentially fixed to the base plate and their bottoms are fixed to form a cavity. The positioning parts are provided with threaded holes and locking screws connected to the threaded holes. The head of the locking screw is placed in the cavity, and the end of the locking screw passes through the positioning part and connects to the watch case. The positioning hole and the strip hole are provided on the base plate.

5. A multi-station positioning fixture for wire drawing of watch cases according to claim 4, characterized in that: The base plate and the positioning part are integrally formed.

6. A multi-station positioning fixture for wire drawing of watch cases according to claim 5, characterized in that: The positioning part includes an arc-shaped part and connecting parts located at both ends of the arc-shaped part. A first positioning step is provided in the middle of the arc-shaped part, and a second positioning step is provided at the connection between the two ends of the arc-shaped part and the connecting parts. Limiting holes for positioning the watch case are provided at the connection between the two ends of the arc-shaped part and the connecting parts.

7. A multi-station positioning fixture for wire drawing of watch cases according to claim 6, characterized in that: The positioning part is provided with notches and grooves located at the first positioning step and the second positioning step, respectively, and the notches and grooves extend from the first positioning step and the second positioning step toward the end face of the positioning part.

8. A multi-station positioning fixture for wire drawing of watch cases according to any one of claims 1-7, characterized in that: A precision divider is connected to the bottom of the mounting base.

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