A non-powder spraying process and device for outer stator core slots

Abstract

The present invention relates to the field of stator processing technology, and in particular discloses a process and device for notching an outer stator core without powder spraying. The device for notching an outer stator core without powder spraying comprises a fixture and a plurality of inserts, wherein the fixture comprises a main body and two mounting parts respectively connected to the two ends of the main body, the main body is cylindrical, and the main body is provided with a plurality of accommodating grooves, the openings of the accommodating grooves are arranged on the outer peripheral surface of the main body, and a clamping part is formed between adjacent accommodating grooves, and the plurality of inserts comprise a plug-in part embedded in the accommodating groove and a protruding part connected to the plug-in part, and the protruding part is used to insert into the notch of the outer stator core. The present invention can protect the notch during the process of forming an insulating layer by powder spraying on the outer stator core, and prevent the notch from being coated, causing the notch size to become smaller, and finally causing the inability to wind the wire, and the structure is simple, easy to use, and highly practical; the notch without powder spraying process is easy to operate and control, has high production efficiency, and low production cost, and is suitable for large-scale industrial production.

Description

Technical Field

[0001] The invention relates to the technical field of stator processing, and in particular discloses a non-powder spraying process and device for an outer stator core slot. Background Art

[0002] The stator is an important component of electric motors such as generators and starters. Its main function is to generate a rotating magnetic field. The stator is generally divided into an outer stator and an outer stator. The stator core is an important component of the outer stator, which mainly includes a yoke and a plurality of teeth arranged circumferentially on the inner side of the yoke. A plurality of adjacent teeth and the inner annular surface of the yoke form a stator slot, and the stator slot includes a notch. When producing the outer stator, it is often necessary to form an insulating layer by powder coating on the outer surface of the yoke and the teeth. The inner wall of the notch and the inner end surface of the teeth do not need to be coated to form an insulating layer. However, in the process of powder coating, the existing outer stator core often easily powder coats the notch together to form an insulating layer, causing the notch size to become smaller, and ultimately making it impossible to wind the wire. Utility Model Content

[0003] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the present invention is to provide a device for preventing powder spraying of slots in an outer stator core, which can protect the slots during the process of powder spraying to form an insulating layer on the outer stator core, thereby preventing the slots from being coated, causing the slot size to become smaller, and ultimately making it impossible to wind the wire.

[0004] Another object of the present invention is to provide a non-powder spraying process for the slots of the outer stator core. The process has convenient operation and control, high production efficiency, low production cost, and is suitable for large-scale industrial production. The slots can be well protected during the process of powder spraying to form an insulating layer on the outer stator core to prevent the slots from being coated.

[0005] To achieve the above-mentioned purpose, the purpose of the present invention is achieved through the following technical scheme: a non-powder spraying device for the slots of an outer stator core, comprising a clamp and a plurality of insert tubes, the clamp comprising a main body and two mounting parts respectively connected to the two ends of the main body, the main body is cylindrical, the main body is provided with a plurality of accommodating grooves, the openings of the accommodating grooves are arranged on the outer peripheral surface of the main body, and a clamping part is formed between adjacent accommodating grooves, the plurality of insert tubes comprise an inserting part embedded in the accommodating groove and a protruding part connected to the inserting part, the protruding part is used to be inserted into the slots of the outer stator core.

[0006] Furthermore, the plurality of accommodating grooves are distributed in the main body in a ring array.

[0007] Furthermore, the clamp is made of Teflon material.

[0008] Furthermore, the cannula is a silicone cannula.

[0009] Furthermore, each of the insert tubes includes an inserting portion embedded in the accommodating groove and a protruding portion connected to the inserting portion, and the protruding portion is used to be inserted into the notch of the outer stator core.

[0010] Furthermore, the longitudinal section of the cannula is rectangular or rounded rectangular.

[0011] Furthermore, the two mounting parts of the clamp are both cylindrical, the mounting part and the main body are coaxially arranged, and the outer diameter of the main body is larger than the outer diameter of the mounting part.

[0012] Furthermore, the plurality of cannulas are detachably connected to the clamp.

[0013] Furthermore, the central axis of the cannula is parallel to the central axis of the main body.

[0014] Another object of the present invention is achieved by the following technical solution: a non-powder spraying process for the slots of an outer stator core, which adopts the above-mentioned non-powder spraying device for the slots of an outer stator core, and the non-powder spraying process for the slots of an outer stator core comprises the following steps:

[0015] (1) Take the outer stator core and pass it through the clamp, so that the inner end surface of the outer stator tooth portion abuts against the outer end surface of the clamping portion, and the protruding portion passes through the notch of the outer stator core and abuts against the inner walls of the notch on both sides of the notch;

[0016] (2) The outer stator core positioned on the fixture is sprayed with a spray device to form an insulating layer on the outer stator core, and the inner end surface of the outer stator tooth and the inner wall of the slot on both sides of the slot are not coated.

[0017] Beneficial effects of the present invention: The non-powder spraying device for the slot of the outer stator core of the present invention comprises a clamp and a plurality of inserting tubes. When in use, the outer stator core passes through the clamp, the inner end face of the outer stator tooth portion abuts against the clamp, a part of the inserting tube is inserted into the accommodating groove, and the other part is used to protrude into the slot of the outer stator core and abut against the inner walls on both sides of the slot. When the outer stator core is powder-coated to form an insulating layer, the inner walls of the slot on both sides of the slot and the inner end face of the outer stator tooth portion can be protected and not sprayed. The present invention can protect the slot during the process of the outer stator core being powder-coated to form an insulating layer, and prevent the slot from being coated, causing the slot size to become smaller, and finally resulting in the inability to wind. It has a simple structure, is easy to use, and has strong practicality.

[0018] The non-powder spraying process for the slots of the outer stator core is easy to operate and control, has high production efficiency, and low production cost, and is suitable for large-scale industrial production. The slots can be well protected during the process of powder spraying to form an insulating layer on the outer stator core to prevent the slots from being coated. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is the front view of the clamp of the present invention.

[0020] Figure 2 It is a cross-sectional view of the fixture at AA of the present invention.

[0021] Figure 3 It is a front view of the cannula of the present invention.

[0022] Figure 4 It is a cross-sectional view of the cannula embedding fixture of the present invention.

[0023] Figure 5 This is a cross-sectional view of the outer stator core.

[0024] Reference numerals include:

[0025] 11—Main body 12—Accommodation groove 13—Installation part

[0026] 14-clamping part 15-insertion tube 16-protrusion

[0027] 17 - plug-in part 21 - yoke part 22 - tooth part

[0028] 23—notch 24—inner wall of notch.

[0029] 25—Inner end face DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with the embodiments and drawings.

[0031] See also Figure 1-4 A non-powder spraying device for an outer stator core slot 23 includes a fixture and a plurality of insert tubes 15. The fixture includes a main body 11 and two mounting portions 13 respectively connected to both ends of the main body 11. The main body 11 is cylindrical. The main body 11 is provided with a plurality of accommodating grooves 12. The openings of the accommodating grooves 12 are arranged on the outer circumferential surface of the main body 11. A clamping portion 14 is formed between adjacent accommodating grooves 12. The plurality of insert tubes 15 are axially inserted into the corresponding accommodating grooves 12 of the main body 11. The plurality of insert tubes 15 include an inserting portion 17 embedded in the accommodating groove 12 and a protruding portion 16 connected to the inserting portion 17. The protruding portion 16 is used to be inserted into the slot 23 of the outer stator core.

[0032] Please refer to 1-5. The outer stator core includes a yoke 21 and a plurality of teeth 22 arranged on the inner circumference of the yoke 21. The plurality of adjacent teeth 22 and the inner annular surface of the yoke 21 form a stator slot. The stator slot includes a slot 23. The inner end surface of the teeth 22 includes a slot inner wall 24 and an inner end surface 25. The non-powder spraying device of the slot 23 of the outer stator core of the present invention includes a clamp and a plurality of inserts 15. When in use, the outer stator core passes through the clamp, and the inner end surface 25 of the outer stator teeth 22 abuts against the outer end surfaces of the plurality of clamping portions 14. A portion of the insert 15 is inserted into the accommodating groove 12, and the other portion is clamped to protrude into the slot 23 of the outer stator core and abut against the inner walls on both sides of the slot 23. The protruding portion 16 passes through the slot 23 of the outer stator core, and two adjacent clamping portions 14 are used to clamp the insert 15. Furthermore, the length of the extension along the radial direction of the outer stator core is not less than the length of the slot 23 of the outer stator core along the radial direction of the outer stator core. When the outer stator core is powder coated to form an insulating layer, the slot inner walls 24 on both sides of the slot 23 and the inner end faces 25 of the outer stator teeth 22 can be protected and not sprayed.

[0033] The present invention can protect the slot 23 during the process of forming an insulating layer on the outer stator core by powder coating, thereby preventing the slot 23 from being coated, causing the slot 23 to become smaller in size, and ultimately making it impossible to wind the wire. The invention has a simple structure, is easy to use, and is highly practical.

[0034] Furthermore, the plurality of accommodating grooves 12 are distributed in a circular array on the main body 11. After the main body 11 of the fixture is slotted, the plurality of inserting tubes 15 can be inserted into the corresponding accommodating grooves 12, and the number of the inserting tubes 15 is the same as the number of the slots 23 of the external stator core, which is helpful to achieve good protection for the plurality of slots 23 during the process of the external stator core being powder-coated to form an insulating layer, and to prevent the slots 23 from being coated, causing the size of the slots 23 to become smaller, and finally making it impossible to wind the wire.

[0035] Furthermore, the clamp is made of Teflon material. Teflon material has the characteristics of high temperature resistance, low friction coefficient, good non-stickiness, no sticking to powder at high temperature, and not easy to deform; it is not easy to stick to powder during the process of powder coating to form an insulating layer on the outer stator core, and is easy to use and clean.

[0036] Furthermore, the insert tube 15 is a silicone insert tube 15. The silicone insert tube 15 is chemically stable and has good elasticity, which helps to achieve good adhesion with the slot inner walls 24 on both sides of the outer stator core slot 23 during the powder spraying process, protect the slot 23, and prevent the slot 23 from being coated.

[0037] Furthermore, the longitudinal section of the insert 15 is rectangular or rounded rectangular. The longitudinal section of this example refers to a section cut along a direction perpendicular to the radial direction of the insert 15. Due to the arrangement of the above structure, the inserting portion 17 of the insert 15 is firmly inserted into the accommodating groove 12, and the protruding portion 16 is used to protrude into the notch 23 of the outer stator core and abut against the inner walls of the notch 23 on both sides. The protruding portion 16 penetrates the notch 23 of the outer stator core, which helps to protect the notch 23 during the powder spraying process and prevent the notch 23 from being coated. In addition, the insert 15 of the above shape is easy to process. The insert 15 can also be designed into other shapes as needed.

[0038] Furthermore, the two mounting parts 13 of the clamp are both cylindrical, the mounting part 13 and the main body 11 are coaxially arranged, and the outer diameter of the main body 11 is larger than the outer diameter of the mounting part 13. Due to the arrangement of the above structure, the two mounting parts 13 can be used to connect with external equipment, play the role of installing and positioning the clamp; the clamp has a simple structure, is easy to use, and has strong practicality.

[0039] Furthermore, the clamp and the plurality of cannulas 15 are detachably connected, so that the clamp and the cannulas 15 are easy to install and remove, and the cannulas 15 are easy to clean and replace.

[0040] This embodiment also provides a non-powder spraying process for the slots of an outer stator core, which uses the above-mentioned non-powder spraying device for the slots of an outer stator core. The non-powder spraying process for the slots of an outer stator core includes the following steps:

[0041] (1) Take the outer stator core and pass it through the fixture. The inner end surface 25 of the outer stator tooth portion 22 abuts against the outer end surface of the clamping portion 14. The protruding portion 16 passes through the notch 23 of the outer stator core and abuts against the inner walls 24 of the notch on both sides of the notch.

[0042] (2) The outer stator core positioned on the fixture is sprayed with a spraying device to form an insulating layer on the outer stator core. The inner end surface 25 of the outer stator tooth and the inner wall 24 of the slot on both sides of the slot are not coated.

[0043] The process is easy to operate and control, has high production efficiency and low production cost, and is suitable for large-scale industrial production. The process of forming an insulating layer by powder coating on the outer stator core can well protect the slot 23 to prevent the slot from being coated.

[0044] The above contents are only preferred embodiments of the present invention, and the contents of this specification should not be understood as limiting the present invention.

Claims

1. A non-powder spraying device for the slot of an outer stator core, characterized in that: The clamp comprises a main body and two mounting parts respectively connected to the two ends of the main body, the main body is cylindrical, the main body is provided with a plurality of receiving grooves, the openings of the receiving grooves are arranged on the outer peripheral surface of the main body, and a clamping part is formed between adjacent receiving grooves, the plurality of the receiving tubes are plugged into the corresponding receiving grooves along the axial direction of the main body, the plurality of the receiving tubes each comprise an inserting part embedded in the receiving groove and a protruding part connected to the inserting part, the protruding part is used to protrude into the notch of the outer stator core and abut against the inner walls on both sides of the notch, and the protruding part passes through the notch of the outer stator core; The plurality of accommodating grooves are distributed in the main body in a circular array. After the main body of the fixture is slotted, the plurality of insert tubes can be embedded in the corresponding accommodating grooves. The number of the insert tubes is the same as the number of slots of the external stator core. The insert tubes are elastic and fit with the inner walls of the slots on both sides of the slots of the external stator core during the powder spraying process.

2. The non-powder spraying device for the outer stator core slot according to claim 1, characterized in that: The clamp is made of Teflon material.

3. The non-powder spraying device for outer stator core slots according to claim 1, characterized in that: The cannula is a silicone cannula.

4. The non-powder spraying device for outer stator core slots according to claim 1, characterized in that: The longitudinal section of the cannula is rectangular or rounded rectangular.

5. The non-powder spraying device for outer stator core slots according to claim 1, characterized in that: The two mounting parts of the clamp are both cylindrical, the mounting part and the main body are coaxially arranged, and the outer diameter of the main body is larger than the outer diameter of the mounting part.

6. The non-powder spraying device for outer stator core slots according to claim 1, characterized in that: The plurality of cannulas are detachably connected to the clamp.

7. The non-powder spraying device for outer stator core slots according to claim 1, characterized in that: The central axis of the cannula is parallel to the central axis of the main body.

8. A non-powder spraying process for the slots of the outer stator core, characterized in that: The non-powder spraying device for the outer stator core slots according to any one of claims 1 to 7 is used, and the non-powder spraying process for the outer stator core slots comprises the following steps: (1) Take the outer stator core and pass it through the clamp, so that the inner end surface of the outer stator tooth portion abuts against the outer end surface of the clamping portion, and the protruding portion passes through the notch of the outer stator core and abuts against the inner walls of the notch on both sides of the notch; (2) The outer stator core positioned on the fixture is sprayed with a spray device to form an insulating layer on the outer stator core, and the inner end surface of the outer stator tooth and the inner wall of the slot on both sides of the slot are not coated.

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