Down press jig for winding machine

Abstract

The utility model discloses a lower pressure fixture for winding machine relates to winding tool technical field, including jig body, jig body includes the upper end face and lower end face of opposite setting, and its second end convex sets up the limit stop, the utility model discloses the cooperation of jig body and skeleton realizes the accurate butt joint of jig body and skeleton and the steady constraint in winding process, in the installation stage, the clamping block of jig body can directly abut the positioning area formed by skeleton and first positioning table, and let the automatic abutment of the step of second positioning table, limit stop card into skeleton through -type, form the multidirectional location of clamping and side resistance, need not repeatedly calibrate to can complete accurate positioning, significantly shorten the assembly time, in the running stage, this multi -location structure can effectively offset the external force produced when winding, avoid jig and skeleton to appear loose deviation, solve the skeleton surface indentation problem caused by the single limit from the root, guarantee winding processing quality stability.

Description

Technical Field

[0001] This utility model relates to the field of winding tools, and in particular to a pressing fixture for winding machines. Background Technology

[0002] In the manufacturing of electric motors, winding (or coiling) is a core process. This process involves using a winding machine to tightly wind copper wire and other conductors onto a specific plastic or bakelite frame to form a functional coil. After the coil is wound onto a specific insulating frame, it is fitted onto the stator teeth to form the stator winding. In existing technologies, winding machines are typically equipped with a pressure jig, which is used to fix and position the bobbin during the winding process, preventing it from shifting or deforming, thereby ensuring the accuracy and consistency of the winding. However, in practice, it has been found that existing pressure jigs have significant defects: their contact surface design with the bobbin is often unreasonable, causing the support and pressure of the jig on the bobbin to concentrate at a point or in a small area when the winding machine applies working pressure, resulting in huge local stress and causing permanent indentations or marks on the bobbin surface; at the same time, the plastic insulating bobbin undergoes plastic deformation or breakage under high pressure, easily producing sharp edges or debris. When the local stress exceeds the strength limit of the bobbin material, it causes micro or macro cracks in the bobbin, seriously affecting the structural integrity and electrical reliability of the product. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a pressure fixture for winding machines.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a pressing fixture for a winding machine, comprising a fixture body, the fixture body including an upper end face and a lower end face disposed opposite to each other, a positioning groove being laterally formed in the middle of the lower end face, and snap-fit ​​blocks protruding on both sides of the lower end face on the positioning groove, a clearance step being formed at the first end of the lower end face, and a limiting plate protruding at the second end; the skeleton includes a skeleton body with a central opening and a first positioning platform extending outward from both sides of the upper end face of the skeleton body, the first positioning platform being inclined upward from both sides of the skeleton body, and forming a positioning area at the connection with the skeleton body; a second positioning platform protruding at the first end of the upper end face of the skeleton body; when the fixture body is used to press down the skeleton, the snap-fit ​​blocks abut against the positioning area; the limiting plate abuts against the second end of the skeleton body, and the second positioning platform abuts against the clearance step.

[0005] Preferably, the bottom of the positioning groove is provided with a connecting groove, which extends through the upper end face and the lower end face.

[0006] Preferably, the upper end face of the fixture body is provided with a plurality of positioning holes for matching with the positioning pins on the winding machine.

[0007] Preferably, the positioning hole includes a first positioning hole at one end of the connecting groove and a second positioning hole at the other end.

[0008] Preferably, the first positioning hole is a circular hole; the second positioning hole is a rectangular hole with rounded corners on its inner wall.

[0009] Preferably, the lower end face of the fixture body is provided with a plurality of countersunk holes, which are used to install the fixture body onto the winding machine.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model achieves precise docking between the fixture body and the skeleton and stable constraint during the winding process through the cooperation of the fixture body and the skeleton; during the installation stage, the snap-fit ​​block of the fixture body can directly abut against the positioning area formed by the skeleton and the first positioning platform, while the clearance step automatically abuts against the second positioning platform and the limiting plate snaps into the skeleton through, forming multi-directional limiting of snap-fit ​​and side abutment, which can complete precise positioning without repeated calibration and significantly shorten the assembly time; during the operation stage, this multi-limiting structure can effectively offset the external force generated during winding, avoid loosening and displacement of the fixture and the skeleton, solve the problem of skeleton surface indentation caused by the existing single limiting from the root, and ensure the stability of the winding processing quality; in addition, the rounded corner design on both sides of the connecting groove can disperse the stress when the external pressure components are engaged, completely solve the defect of easy cracking due to stress concentration in the groove part of the fixture body, greatly improve the structural strength of the fixture, extend its service life, and fully meet the core requirements of winding processing for positioning accuracy and connection stability. Attached Figure Description

[0011] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure proposed in this utility model; Figure 2 This is a half-sectional schematic diagram of the pressure fixture proposed in this utility model; Figure 3 This is a half-sectional schematic diagram of the skeleton proposed in this utility model; Figure 4 This is a schematic diagram of the snap-fit ​​block structure proposed in this utility model.

[0012] The numbers in the diagram are: 1. Fixture body; 2. Frame; 3. Positioning groove; 4. Connecting groove; 5. Rounded corner; 6. Snap-fit ​​block; 7. Clearance step; 8. Limiting plate; 9. First positioning hole; 10. Second positioning hole; 11. Countersunk hole; 12. First positioning platform; 13. Second positioning platform. Detailed Implementation

[0013] 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.

[0014] Example: See Figures 1 to 4 The winding machine pressing fixture of this utility model includes a fixture body 1, which includes an upper end face and a lower end face that are arranged opposite to each other. The fixture body 1 facilitates the contact between the fixture body 1 and the positioning area on the frame 2 via the snap-fit ​​block 6. The fixture body 1 and the components fixed to the fixture body 1 are all made of metal. A positioning groove 3 is laterally opened in the middle of the lower end face. The positioning groove 3 facilitates the subsequent connection of the clearance step 7 and the limiting plate 8 by welding. Snap-fit ​​blocks 6 are protruding on the lower end faces on both sides of the positioning groove 3. The first end of the lower end face has a clearance step 7, and the second end has a limiting plate 8. The limiting plate 8 facilitates the subsequent connection between the fixture body 1 and the frame 2 by the snap-fit ​​block 6 and the clearance step 7. The frame 2 includes a frame body with a central opening and a first positioning platform 12 extending outward from both sides of the upper end face of the frame body. The frame 2 facilitates the subsequent connection with the fixture body 1 by external matching electrical machinery. The mechanical equipment winds a wire around the middle of the outer side of the frame 2. The frame 2 itself and the components fixed to the frame 2 are all made of hard rubber. The first positioning platform 12 is inclined upward from both sides of the frame body and forms a positioning area at the connection with the frame body. The first end of the upper surface of the frame body is provided with a second positioning platform 13. The second positioning platform 13 facilitates the connection between the fixture body 1 and the frame 2 by cooperating with the positioning area, the clearance step 7, the limiting plate 8 and the snap-fit ​​block 6. When the fixture body 1 presses down on the frame, the snap-fit ​​block 6 abuts against the positioning area. The snap-fit ​​block 6 facilitates the fixture body 1 to adapt to the positioning area of ​​the frame 2 and abut against the frame 2, and leaves a certain sliding space for the fixture body 1. The limiting plate 8 abuts against the second end of the frame body 2, and the second positioning platform 13 abuts against the clearance step 7. The clearance step 7 makes it abut against the side of the second positioning platform 13 and cooperate with the snap-fit ​​block 6 to provide limitation during the connection between the fixture body 1 and the frame 2. In this utility model, a connecting groove 4 is provided at the bottom of the positioning groove 3. The connecting groove 4 extends through the upper and lower end faces. The connecting groove 4 is used to connect with the external extrusion assembly for subsequent pressing and fixing of the skeleton 2. Several positioning holes are provided on the upper end face of the fixture body 1 for matching with the positioning posts on the winding machine. The positioning holes include a first positioning hole 9 at one end of the connecting groove 4 and a second positioning hole 10 at the other end. The first positioning hole 9 is a circular hole. The second positioning hole 10 is a rectangular hole with rounded corners 5 on the four corners of the inner wall. The first positioning hole 9 and the second positioning hole 10 facilitate the matching with the connecting groove 4 so that the external pressure assembly can be more firmly connected to the fixture body 1. The rounded corners 5 prevent stress impact on the fixture body 1 at the connecting groove 4, improve structural strength and prevent product cracking. Several countersunk holes 11 are provided on the lower end face of the fixture body 1 for installing the fixture body 1 onto the winding machine.

[0015] Working principle: When using this utility model, the operator first checks whether the frame 2 has cracks or other defects. After inspection, the fixture body 1 is connected to the external pressure assembly via the connecting groove 4, the first positioning hole 9, and the second positioning hole 10. The rounded corner 5 also provides a guiding fit for the pressure assembly. Then, an external bolt is passed through the countersunk hole 11, and an external screwdriver is used to connect the external bolt to the pressure assembly. After installing the bolt in the countersunk hole 11, the fixture body 1 is completely connected to the external pressure assembly. Subsequently... The fixture body 1 will abut against the positioning area formed by the skeleton 2 and the first positioning platform 12 through the snap-fit ​​block 6, so that the bottom surface of the fixture body 1 abuts against the first positioning platform 12 and the skeleton 2. The operator can adjust the sliding skeleton 2 so that the clearance step 7 installed on the positioning groove 3 can abut against the other side of the second positioning platform 13 and the limiting plate 8 installed on the positioning groove 3 can also slide and snap into it. After installation, the fixture body 1 and the skeleton 2 can be fixed by the pressure component to prevent the skeleton 2 from being dented and cracked during the subsequent winding process with the external winding component.

[0016] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A pressing fixture for a winding machine, comprising a fixture body (1), characterized in that: The fixture body (1) includes an upper end face and a lower end face that are arranged opposite to each other. A positioning groove (3) is opened in the middle of the lower end face. A snap-fit ​​block (6) is protruded on the lower end face on both sides of the positioning groove (3). A clearance step (7) is opened at the first end of the lower end face, and a limiting plate (8) is protruded at the second end. The skeleton (2) includes a skeleton body with a central opening and a first positioning platform (12) extending outward from both sides of the upper end face of the skeleton body. The first positioning platform (12) is inclined upward from both sides of the skeleton body and forms a positioning area at the connection with the skeleton body. A second positioning platform (13) is protruding from the first end of the upper end face of the skeleton body. When the jig body (1) is used to press down the skeleton, the snap-fit ​​block (6) abuts against the positioning area; the limiting plate (8) abuts against the second end of the skeleton body (2), and the second positioning platform (13) abuts against the clearance step (7).

2. The lower pressure fixture for a winding machine according to claim 1, characterized in that: The bottom of the positioning groove (3) is provided with a connecting groove (4), which penetrates the upper end face and the lower end face.

3. The down-pressing jig for a winding machine according to claim 2, characterized by: The upper end face of the fixture body (1) is provided with several positioning holes for matching with the positioning pins on the winding machine.

4. The lower pressure fixture for a winding machine according to claim 3, characterized in that: The positioning hole includes a first positioning hole (9) at one end of the connecting groove (4) and a second positioning hole (10) at the other end.

5. The down-pressing jig for a winding machine according to claim 4, characterized by: The first positioning hole (9) is a circular hole; the second positioning hole (10) is a rectangular hole, and the four corners of the inner wall are rounded (5).

6. The lower pressure fixture for a winding machine according to claim 2, characterized in that: The lower end face of the fixture body (1) is provided with a plurality of countersunk holes (11), which are used to install the fixture body (1) onto the winding machine.

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