Coil combination winding tool

Abstract

The utility model discloses a coil combination winding tool, belongs to the technical field of coil combination, and solves the problem that a coil combination is inconvenient to fix due to the fact that only one end of a half coil framework is provided with a baffle. The device comprises a connecting screw, one end of the connecting screw is in threaded connection with a nut and a winding clamp in sequence, one side of the nut abuts against the end face of the winding clamp, the other side of the nut abuts against a baffle on a half coil framework, the half coil framework is arranged on the connecting screw in a sleeving mode, and the side, away from the baffle, of the half coil framework abuts against a baffle ring. And the baffle ring is screwed on the connecting screw rod. The coil assembly is simple in structure and convenient to assemble and disassemble, the baffle ring and the baffle on the half coil framework can extrude the two ends of the coil assembly respectively, and after the coil is wound to form the coil assembly, the coil assembly is fixed firmly and cannot loosen or fall off.

Description

Technical Field

[0001] The utility model relates to the technical field of coil combination, in particular to a coil combination winding tool. Background Art

[0002] The coil assembly is a sensitive element of an inductive proximity switch or proximity sensor. The quality of the coil assembly winding directly determines the product performance. The coil frame in the prior art usually has baffles at both ends. The coil assembly winding only needs to control the number of turns of the winding wire and take certain measures to control the insulation of the coil assembly after winding to ensure the performance of the coil assembly.

[0003] The half coil skeleton in the prior art is a special type of coil skeleton, which has a baffle at only one end. Although the half coil skeleton is convenient for removing the coil combination, the process of winding the coil combination requires not only that the coils can be tightly wound during winding, but also that the coil combination cannot be loose or collapsed after winding. However, since the half coil skeleton has a baffle at only one end, it is not convenient to fix the coil combination. Utility Model Content

[0004] In view of the above problems in the prior art, the utility model provides a coil assembly winding tool, which solves the problem that the coil assembly is inconvenient to fix because only one end of the half coil skeleton has a baffle.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A coil combination winding tool is provided, comprising a connecting screw, one end of which is threadedly connected to a nut and a winding fixture in sequence, one side of the nut abuts against the end face of the winding fixture, and the other side of the nut abuts against a baffle on a half coil skeleton, the half coil skeleton is sleeved on the connecting screw, and a side of the half coil skeleton away from the baffle abuts against a baffle ring, and the baffle ring is threadedly connected to the connecting screw.

[0007] The working principle of this solution is to place half of the coil skeleton on the connecting screw, and the two ends are respectively in contact with the nut and the retaining ring, so that the retaining ring and the baffle on the half of the coil skeleton can respectively squeeze the two ends of the coil combination. After the coil is wound to form a coil combination, the coil combination is firmly fixed and will not become loose or collapse.

[0008] Furthermore, the outer diameter of the retaining ring is the same as the outer diameter of the baffle plate of the half coil frame. By setting the outer diameter of the retaining ring in this way, the retaining ring can be equivalent to the baffle plate on the other end of the half coil frame.

[0009] Furthermore, a snap ring is arranged on the outer side of the baffle, and a ring groove for limiting the snap ring is arranged on one side end face of the nut. The arrangement of the snap ring and the ring groove facilitates the positioning of the half coil frame on the nut.

[0010] Furthermore, the connecting screw includes a fixed section and a threaded section, the threaded section is threadedly connected to the nut and the winding fixture in sequence, and the half coil skeleton and the retaining ring are both located on the fixed section.

[0011] Furthermore, the diameter of the fixed section is larger than the diameter of the threaded section. The diameters of the fixed section and the threaded section are set in this way, so that the nut can be tightly pressed against one end of the fixed section.

[0012] Furthermore, the winding fixture is in a stepped circular structure, a first threaded hole threadedly connected to the threaded section is opened at the small diameter end of the winding fixture, and a second threaded hole threadedly connected to the winding machine is opened at the large diameter end of the winding fixture.

[0013] Further, the diameter of the first threaded hole is smaller than the diameter of the second threaded hole.

[0014] Furthermore, the length of the threaded section is equal to the sum of the height of the nut and the length of the first threaded hole. By setting the length of the threaded section in this way, the connection length of the threaded section in the first threaded hole can be ensured.

[0015] The utility model discloses a coil combination winding tool, which has the following beneficial effects:

[0016] The utility model has a simple structure and is easy to assemble and disassemble. The baffle plate on the baffle ring and the half coil frame can respectively squeeze the two ends of the coil combination. After the coil is wound to form the coil combination, the coil combination is firmly fixed without loosening or collapsing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the coil assembly winding tooling;

[0018] Figure 2 It is a structural schematic diagram of half coil skeleton;

[0019] Among them: 1. winding fixture; 2. nut; 3. retaining ring; 4. connecting screw; 5. half coil frame; 51. retaining ring. DETAILED DESCRIPTION

[0020] The specific implementation methods of the utility model are described below to facilitate technical personnel in this technical field to understand the utility model, but it should be clear that the utility model is not limited to the scope of the specific implementation methods. For ordinary technical personnel in this technical field, as long as various changes are within the spirit and scope of the utility model defined and determined by the attached claims, these changes are obvious, and all utility model creations using the concept of the utility model are protected.

[0021] refer to Figure 1The present embodiment provides a coil assembly winding tool, including a winding fixture 1 for connecting to an external winding machine, a nut 2, a retaining ring 3, a connecting screw 4 and a half coil frame 5.

[0022] One end of the connecting screw 4 is threadedly connected to the nut 2 and the winding fixture 1 in sequence, one side of the nut 2 is in contact with the end face of the winding fixture 1, and the other side of the nut 2 is in contact with the baffle on the half coil skeleton 5. The half coil skeleton 5 is sleeved on the connecting screw 4, and the side of the half coil skeleton 5 away from the baffle is in contact with the baffle ring 3. The inner ring of the baffle ring 3 is provided with an internal thread and is threadedly connected to the connecting screw 4.

[0023] In this embodiment, a half coil skeleton 5 is placed on the connecting screw 4, and the two ends are respectively in contact with the nut 2 and the retaining ring 3, so that the retaining ring 3 and the baffle on the half coil skeleton 5 can respectively squeeze the two ends of the coil combination. After the coil is wound on the half coil skeleton 5 and the coil combination is formed, the coil combination is firmly fixed and will not become loose or collapse.

[0024] Specifically, refer to Figure 2 The half coil frame 5 includes a cylinder with openings at both ends, and a ring-shaped baffle is arranged on one end of the cylinder, and the outer diameter of the baffle ring 3 is the same as the outer diameter of the baffle of the half coil frame 5. By setting the outer diameter of the baffle ring 3 in this way, the baffle ring 3 can be equivalent to the baffle on the other end of the half coil frame 5.

[0025] A snap ring 51 is arranged on the outer side of the baffle, and a ring groove for limiting the snap ring 51 is arranged on one end face of the nut 2. The arrangement of the snap ring 51 and the ring groove facilitates the positioning of the half coil frame 5 on the nut 2.

[0026] Specifically, the connecting screw 4 includes a fixed section and a threaded section, the threaded section is threadedly connected to the nut 2 and the winding fixture 1 in sequence, and the half coil skeleton 5 and the retaining ring 3 are both located on the fixed section. The diameter of the fixed section is larger than the diameter of the threaded section. The diameters of the fixed section and the threaded section are set in this way, so that the nut 2 is pressed against one end of the fixed section. The fixed section is provided with an external thread threadedly connected to the retaining ring 3.

[0027] The length of the threaded section is equal to the sum of the height of the nut 2 and the length of the first threaded hole. By setting the length of the threaded section in this way, the connection length of the threaded section in the first threaded hole can be ensured.

[0028] As a further solution of this embodiment, the winding fixture 1 has a stepped circular structure, and a first threaded hole threadedly connected to the threaded segment is opened at the small diameter end of the winding fixture 1, and a second threaded hole threadedly connected to the winding machine is opened at the large diameter end of the winding fixture 1, and the diameter of the first threaded hole is smaller than the diameter of the second threaded hole.

[0029] The method for using the coil assembly winding tool in this embodiment includes the following steps:

[0030] S1. Assemble the retaining ring 3 and the half coil frame 5 on the connecting screw 4 respectively, with the side of the half coil frame 5 without the retaining edge facing the retaining ring 3, and finally assemble the nut 2 on the connecting screw 4.

[0031] S2. Assemble the connecting screw 4 on the winding fixture 1.

[0032] S3, assembling the winding fixture 1 on the winding machine, and starting to wind the coil on the half coil frame 5;

[0033] S4, after the coil is wound and the coil assembly is formed, a polyimide film is bundled on the half coil frame 5, wrapped twice, and the enameled wire in the coil assembly is compressed;

[0034] S5, removing the connecting screw 4 from the winding fixture 1;

[0035] S6. Dip the coil assembly into a varnish: first place the coil assembly in a high and low temperature box at 80℃~90℃ and bake for 1 hour. Adjust the viscosity of the insulating varnish to about 18s, and immerse the entire coil assembly in the insulating varnish.

[0036] S7. Place the coil assembly soaked in insulating varnish in a vacuum box, evacuate to -0.090MPa, and maintain for 20 minutes. After the time is up, release the vacuum source, remove the coil assembly from the insulating varnish, place it at room temperature for 10 hours, and wipe off the paint nodules in the coil assembly. Keep the varnished coil assembly at 70℃ for 1 hour, 80℃ for 1 hour, and 100℃ for 16 hours, and take out the coil assembly after cooling;

[0037] S8. Remove the polyimide film that is tied and fixed from the coil assembly.

[0038] S9, remove the nut 2 from the connecting screw 4, then remove the half coil frame 5, and finally remove the coil assembly from the half coil frame 5 to complete the production of the coil assembly.

[0039] Although the specific implementation of the utility model is described in detail in conjunction with the drawings, it should not be understood as limiting the scope of protection of this patent. Within the scope described in the claims, various modifications and variations that can be made by those skilled in the art without creative work still fall within the scope of protection of this patent.

Claims

1. A coil assembly winding tool, characterized in that: The invention comprises a connecting screw (4), one end of which is threadedly connected to a nut (2) and a winding fixture (1) in sequence, one side of the nut (2) abuts against the end face of the winding fixture (1), and the other side of the nut (2) abuts against a baffle on a half coil frame (5); the half coil frame (5) is sleeved on the connecting screw (4), and the side of the half coil frame (5) away from the baffle abuts against a baffle ring (3); and the baffle ring (3) is threadedly connected to the connecting screw (4).

2. The coil assembly winding tool according to claim 1, characterized in that: The outer diameter of the retaining ring (3) is the same as the outer diameter of the retaining plate of the half coil frame (5).

3. The coil assembly winding tool according to claim 1, characterized in that: A snap ring (51) is provided on the outer side surface of the baffle, and a ring groove for limiting the snap ring (51) is provided on one side end surface of the nut (2).

4. The coil assembly winding tool according to claim 1, characterized in that: The connecting screw (4) comprises a fixed section and a threaded section, the threaded section being threadedly connected to the nut (2) and the winding fixture (1) in sequence, and the half coil frame (5) and the retaining ring (3) are both located on the fixed section.

5. The coil assembly winding tool according to claim 4, characterized in that: The diameter of the fixing section is greater than the diameter of the threaded section.

6. The coil assembly winding tool according to claim 4, characterized in that: The winding clamp (1) is in the shape of a stepped circular structure, the small diameter end of the winding clamp (1) is provided with a first threaded hole threadedly connected to the threaded section, and the large diameter end of the winding clamp (1) is provided with a second threaded hole threadedly connected to the winding machine.

7. The coil assembly winding tool according to claim 6, characterized in that: A diameter of the first threaded hole is smaller than a diameter of the second threaded hole.

8. The coil assembly winding tool according to claim 7, characterized in that: The length of the threaded section is equal to the sum of the height of the nut (2) and the length of the first threaded hole.

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