Flat wire twisting barrel

Abstract

The utility model relates to a flat wire twisting barrel which comprises an outer barrel body and an inner barrel body, the outer barrel body comprises an outer barrel bottom and an outer barrel wall, a plurality of first guide parts are evenly arranged on the inner side of the outer barrel wall in the radial direction at intervals, and a first guide groove is formed between every two adjacent first guide parts; the inner barrel body is arranged in a space formed by the outer barrel bottom and the outer barrel wall, the inner barrel body comprises an inner barrel bottom and an inner barrel wall, a plurality of second guide parts are evenly arranged on the outer side of the inner barrel wall in the radial direction at intervals, and a second guide groove is formed between every two adjacent second guide parts; a flat wire twisting station is formed between the first guide groove and the second guide groove, and a flat wire located at the flat wire twisting station is twisted and deformed in the relative rotation process of the outer cylinder body and the inner cylinder body. And a plurality of groups of flat wires can be stressed and twisted in the guide groove.

Description

Technical Field

[0001] This application relates to the technical field of stator processing, and particularly relates to a flat wire torsion barrel. Background Art

[0002] Currently, flat wire motors are mainly used in electric vehicle drive motors. Torsion of each layer of flat wires at the end of the flat wire motor stator is one of the key steps in the manufacturing process of flat wire motors. Flat wire torsion refers to the staggered torsional deformation of the flat wires inserted into the torsion die in the order of the outer layer first and then the inner layer. The existing process for twisting flat wires is usually relatively complex, and generally uses a relatively complex mechanical structure. For example, in Chinese Patent No. CN202210841577.X, a flat wire motor wire inserting and braiding device is disclosed, which includes a sliding table mechanism, a wire inserting mechanism, a lifting and rotating mechanism, and a wire inserting die. The wire inserting die includes an inner die and an outer die sleeved outside the inner die. The wire inserting die is installed on the sliding table mechanism and can reciprocate between the wire inserting station and the braiding station; an inner insertion hole is provided on the inner die, and an outer insertion hole is provided on the outer die. When the wire inserting die is at the wire inserting station, the wire inserting mechanism can insert one end of the hairpin flat wire into the inner insertion hole and the other end of the hairpin flat wire into the outer insertion hole; when the wire inserting die is at the braiding station, the lifting and rotating mechanism can drive the inner die to rotate relative to the outer die, so that the part of the hairpin flat wire above the inner insertion hole and the outer insertion hole is twisted by a predetermined angle. The overall mechanism is relatively complex and the efficiency is not high. Therefore, there is an urgent need to provide a flat wire torsion barrel that can conveniently realize flat wire torsion. Summary of the Utility Model

[0003] Based on this, in order to realize the torsion of flat wires, the present utility model proposes a flat wire torsion barrel. It includes: an outer cylinder body, the outer cylinder body includes an outer cylinder bottom and an outer cylinder wall, and a plurality of first guiding parts are evenly arranged at intervals along the radial direction on the inner side of the outer cylinder wall, and a first guiding groove is arranged between two adjacent first guiding parts;

[0004] An inner cylinder body, the inner cylinder body is arranged in the space formed by the outer cylinder bottom and the outer cylinder wall, the inner cylinder body includes an inner cylinder bottom and an inner cylinder wall, and a plurality of second guiding parts are evenly arranged at intervals along the radial direction on the outer side of the inner cylinder wall, and a second guiding groove is arranged between two adjacent second guiding parts; a flat wire torsion station is formed between the first guiding groove and the second guiding groove, and the flat wire at the flat wire torsion station is twisted and deformed during the relative rotation of the outer cylinder body and the inner cylinder body.

[0005] Preferably, the number of the first guiding parts is equal to the number of the second guiding parts; the number of the first guiding grooves is equal to the number of the second guiding grooves.

[0006] Preferably, the first guiding part is integrally formed with the outer cylinder body, and the second guiding part is integrally formed with the inner cylinder body.

[0007] Preferably, a chamfer is provided on the side of the first guiding portion away from the outer cylinder, and a chamfer is provided on the side of the second guiding portion away from the inner cylinder.

[0008] Preferably, the flat wire is U-shaped, and two ends of the U-shaped flat wire are respectively inserted into two first guiding grooves with at least a 2-guiding-portion interval.

[0009] Preferably, a plurality of teeth are uniformly arranged at intervals on the inner cylinder bottom, and an extension portion of the first guiding groove is arranged between two adjacent teeth.

[0010] Preferably, an arc chamfer is provided at one end of the extension portion close to the tooth.

[0011] Preferably, after the inner cylinder is assembled in the outer cylinder, the gap between the outermost edges of a plurality of the first guiding portions and the outermost edges of a plurality of the second guiding portions is smaller than the thickness of the flat wire to be twisted.

[0012] Preferably, mounting holes are provided in both the inner cylinder bottom and the outer cylinder bottom, and a driving mechanism is mounted through the mounting holes on the inner cylinder bottom and / or the outer cylinder bottom.

[0013] Preferably, the outer cylinder and the inner cylinder are concentric annular cylinder structures.

[0014] Compared with the prior art, the advantages of the present application are as follows:

[0015] (1) The present application uses an annular outer cylinder and an inner cylinder to realize the twisting of the flat wire, enabling the entire structure to be miniaturized. A plurality of guiding bodies and guiding grooves are provided on the annular outer cylinder and inner cylinder, which can accommodate the flat wire to be twisted under force in the guiding grooves.

[0016] (2) The outer cylinder and the inner cylinder are respectively provided with the same number of guiding grooves and guiding bodies, which can allow the flat wire to be inserted into the guiding grooves at intervals. Multiple groups of flat wires are arranged at intervals simultaneously, and the twisting of multiple groups of flat wires can be achieved through one-time twisting.

[0017] (3) Chamfers are provided at the ends of the guiding bodies, and both the guiding bodies and the guiding grooves are polished, avoiding scratching the paint layer on the surface of the flat wire and ensuring that the surface of the product is not damaged during twisting. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following further describes the present application with reference to the drawings and embodiments:

[0019] Figure 1 It is a schematic diagram of the overall structure of the flat wire twisting barrel provided by the embodiment of the present application;

[0020] Figure 2Schematic diagram of the outer cylinder structure of the flat wire torsion barrel provided by the embodiment of the present application;

[0021] Figure 3 Schematic diagram of the inner cylinder structure of the flat wire torsion barrel provided by the embodiment of the present application.

[0022] Wherein:

[0023] 10. Outer cylinder;

[0024] 11. Outer cylinder wall, 12. Outer cylinder bottom, 13. First guiding part, 14. First guiding groove 14, 15. Tooth, 141. Extension part;

[0025] 20. Inner cylinder;

[0026] 21. Inner cylinder wall, 22. Inner cylinder bottom, 23. Second guiding part, 24. Second guiding groove. Detailed implementation manners

[0027] To make the objectives, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only one embodiment of the present application, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the scope of protection of the present application.

[0028] As used herein, an "embodiment" refers to a specific feature, structure or characteristic that may be included in at least one implementation manner of the present application. In the description of the embodiments of the present application, it should be understood that the terms "first", "second", "third", etc. are only used for descriptive purposes, and cannot be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, features defined with "first", "second", "third", etc. may explicitly or implicitly include one or more of such features. Moreover, the terms "first", "second", "third", etc. are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that such data may be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "including" and "being" and any variations thereof are intended to cover non-exclusive inclusion.

[0029] Such as Figure 1As shown in the figure, it is a schematic diagram of the overall structure of the flat wire torsion barrel provided by the embodiment of the present application, including an outer cylinder body 10 and an inner cylinder body 20. Both the outer cylinder body 10 and the inner cylinder body 20 are circular, and the diameter of the outer cylinder body 10 is larger than that of the inner cylinder body 20. The outer cylinder body 10 includes an annular outer cylinder wall 11 and a circular outer cylinder bottom 12. The circular outer cylinder bottom 12 is installed at one end of the annular outer cylinder wall 11. Thus, a cylindrical accommodation space is formed between the outer cylinder wall 11 and the outer cylinder bottom 12. A plurality of first guiding parts 13 are arranged at equal intervals along the radial direction on the inner side of the outer cylinder wall 11. A first guiding groove 14 is arranged between two adjacent first guiding parts 13. The first guiding groove 14 can be used to accommodate flat wires. In this embodiment, the first guiding part 13 is integrally formed with the outer cylinder wall 11, and both side edges in the first guiding groove 14 are polished into smooth surfaces, avoiding damaging the paint layer on the surface of the flat wire.

[0030] The diameter of the inner cylinder body 20 is smaller than the inner diameter of the outer cylinder body 10. The inner cylinder body 20 is arranged in the accommodation space formed by the outer cylinder wall 11 and the outer cylinder bottom 12. The inner cylinder body 20 includes an inner cylinder wall 21 and an inner cylinder bottom 22. A plurality of second guiding parts 23 are arranged at equal intervals along the radial direction on the outer side of the inner cylinder wall 21. A second guiding groove 24 is arranged between two adjacent second guiding parts 23. The second guiding groove 24 can be used to accommodate flat wires. The second guiding part 23 is integrally formed with the inner cylinder wall 21, and both the bottom surface and the side wall of the second guiding groove are polished into smooth surfaces, avoiding damaging the paint layer on the surface of the flat wire.

[0031] The first guide portion 13 is arranged in a long strip shape along the radial direction of the inner side of the outer tube wall 11. The width of the first guide groove 14 formed between two adjacent first guide portions 13 is close to the width of the flat wire. The shape of the second guide portion 23 is the same as that of the first guide portion 13, the number is also equal, and the length is shorter than the length of the first guide portion 13. The width of the second guide groove 24 formed between two adjacent second guide portions 23 is equal to the width of the first guide groove 14, the number is also equal, and the length is shorter than the length of the first guide groove 14. After the inner cylinder 20 is assembled in the outer cylinder 10, a flat wire twisting station is formed between the first guide groove 14 and the second guide groove 24. The twisting station can be used to place the flat wire. The flat wire used for the flat wire motor is generally U-shaped. The two ends of the U-shaped flat wire can be inserted into the flat wire twisting station. Since the distance between the two ends of the U-shaped flat wire is greater than the distance between two adjacent first guide grooves 14, the two ends of the U-shaped flat wire are inserted into the flat wire twisting station with multiple first guide grooves 14 spaced apart. Multiple groups of U-shaped flat wires are inserted into the flat wire twisting station in an interval arrangement. After the inner cylinder 20 is assembled in the outer cylinder 10, and multiple groups of flat wires are inserted into the flat wire twisting station at intervals according to a certain rule, the inner cylinder 20 and the outer cylinder 10 are driven by the driving mechanism fixed on the inner cylinder 20 and the outer cylinder 10 to rotate relative to each other, and the flat wire located at the twisting station can be twisted and deformed by the rotational force applied to the flat wire.

[0032] like Figures 2 - 3 As shown, a plurality of teeth 15 are evenly spaced on the outer cylinder bottom 12 of the outer cylinder body 10, the number of teeth 15 is equal to the number of first guide portions 13, and the width of the teeth 15 is smaller than the width of the first guide portion 13, the teeth 15 and the first guide portion 13 can be integrally formed or welded, and an extension portion 141 of the first guide groove 14 is formed by two adjacent teeth 15 and two first guide portions 13, and the extension portion 141 has a larger opening area than the first guide groove 14, which facilitates the smooth insertion of the flat wire into the first guide groove 14 and passing through the extension portion 141 to pass through the outer cylinder bottom 12.

[0033] A plurality of mounting holes for connecting the driving mechanism are arranged on the outer cylinder bottom 12 and the inner cylinder bottom 22. After the inner cylinder 20 is assembled on the outer cylinder 10, the gap between the first guide portion 13 and the second guide portion 23 is very small, and the size of the gap is smaller than the thickness of the flat wire, thereby satisfying the relative rotation of the inner cylinder 20 and the outer cylinder 10 and preventing the flat wire from jumping out of the gap. Driven by the driving mechanism, the flat wire can be twisted to a specified angle at the flat wire twisting station.

[0034] The above embodiments are only for illustrating the technical concept and features of the present application, and the purpose is to enable those who are familiar with this technology to understand the content of the present application and implement it accordingly, and it should not be used to limit the protection scope of the present application. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic features of the present application, the present application can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present application is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes that fall within the meaning and scope of the equivalent elements of the claims in the present application.

Claims

1. A flat wire twisting barrel, characterized in that: include: An outer cylinder body, the outer cylinder body comprising an outer cylinder bottom and an outer cylinder wall, a plurality of first guide portions are evenly spaced along the radial direction on the inner side of the outer cylinder wall, and a first guide groove is provided between two adjacent first guide portions; An inner cylinder body, wherein the inner cylinder body is arranged in a space formed by the outer cylinder bottom and the outer cylinder wall, the inner cylinder body comprises an inner cylinder bottom and an inner cylinder wall, a plurality of second guide portions are evenly spaced radially on the outer side of the inner cylinder wall, a second guide groove is arranged between two adjacent second guide portions; a flat wire twisting station is formed between the first guide groove and the second guide groove, and the flat wire in the flat wire twisting station is twisted and deformed during the relative rotation of the outer cylinder body and the inner cylinder body.

2. A flat wire twist barrel according to claim 1, characterized in that: The number of the first guide portions is equal to the number of the second guide portions; the number of the first guide grooves is equal to the number of the second guide grooves.

3. A flat wire twist barrel according to claim 2, characterized in that: The first guide portion is integrally formed with the outer cylinder, and the second guide portion is integrally formed with the inner cylinder.

4. A flat wire twist barrel according to claim 3, characterized in that: A chamfer is provided on a side of the first guide portion away from the outer cylinder, and a chamfer is provided on a side of the second guide portion away from the inner cylinder.

5. A flat wire twisting barrel according to claim 4, characterized in that: The flat wire is U-shaped, and two ends of the U-shaped flat wire are respectively inserted into two first guide grooves spaced at least two apart from each other by first guide portions.

6. A flat wire twisting barrel according to claim 5, characterized in that: A plurality of teeth are evenly spaced on the bottom of the inner cylinder, and the area between two adjacent teeth is set as an extension of the first guide groove.

7. A flat wire twisting barrel according to claim 6, characterized in that: An end of the extension portion close to the tooth is provided with an arc chamfer.

8. A flat wire twist barrel according to any one of claims 1 to 7, characterized in that: After the inner cylinder is assembled in the outer cylinder, the gaps between the outermost edges of the first guides and the outermost edges of the second guides are smaller than the thickness of the twisted flat wire.

9. The flat wire twisting barrel according to claim 8, characterized in that: The inner cylinder bottom and the outer cylinder bottom are both provided with mounting holes, and the driving mechanism is mounted on the inner cylinder bottom and / or the outer cylinder bottom through the mounting holes.

10. The flat wire twisting barrel according to claim 9, characterized in that: The outer cylinder and the inner cylinder are concentric annular cylinder structures.

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