Device for welding copper end ring of motor

Abstract

A device for welding a motor copper end ring comprises a main body, the main body defines a containing cavity, the containing cavity is provided with an upper opening, the upper opening is used for enabling one end of a motor rotor to be welded to stretch into the containing cavity, and the motor rotor to be welded comprises a copper end ring to be welded; the induction heating piece is arranged on the main body and is used for providing heat during welding of the to-be-welded copper end ring; the supporting piece is arranged in the containing cavity and used for supporting one end of the to-be-welded motor rotor, so that a distance is formed between the to-be-welded copper end ring and the induction heating piece; and the adjusting assembly is connected with the supporting piece and used for adjusting the height of the supporting piece so as to adjust the size of the distance. According to the device for welding the copper end ring of the motor, the distance between the copper end ring to be welded and the induction heating piece can be conveniently adjusted, so that a workpiece to be welded is uniformly heated, the melting speed of welding rods is consistent, the welding seam quality and the welding speed are improved, the operation difficulty is reduced, and the welding efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of motor welding, and in particular to a device for welding copper end rings of motors. Background Art

[0002] The statements herein merely provide background information related to the present application and do not necessarily constitute prior art.

[0003] The motor (electric machine) rotors currently produced are mainly divided into two types: copper bar welded rotors and cast aluminum rotors. Copper bar welded rotors have higher efficiency levels and longer service life than cast aluminum rotors. However, the prerequisite is that the copper end rings of the copper bar welded rotors can be well welded. Utility Model Content

[0004] A brief overview of the present application is provided below in order to provide a basic understanding of certain aspects of the present application. It should be understood that this overview is not an exhaustive overview of the present application. It is not intended to identify the key or important parts of the present application, nor is it intended to limit the scope of the present application. Its purpose is merely to present certain concepts in a simplified form as a prelude to a more detailed description discussed later.

[0005] The present application provides a device for welding copper end rings of motors, comprising: a main body, wherein the main body defines a placement cavity, wherein the placement cavity has an upper opening, wherein the upper opening is used to allow one end of a motor rotor to be welded to extend into the placement cavity, wherein the motor rotor to be welded comprises a copper end ring to be welded; an induction heating element, which is arranged on the main body, wherein the induction heating element is used to provide heat during welding of the copper end ring to be welded; a support element, which is arranged in the placement cavity, wherein the support element is used to support one end of the motor rotor to be welded, so that a distance is formed between the copper end ring to be welded and the induction heating element; and an adjustment component, which is connected to the support element and is used to adjust the height of the support element, thereby adjusting the size of the distance.

[0006] Furthermore, the adjustment assembly includes a screw rod, one end of which is connected to the support member, the axis of the screw rod is along the vertical direction, and the screw rod moves in the vertical direction through a thread, thereby driving the height adjustment of the support member.

[0007] Furthermore, the adjustment assembly also includes a thrust bearing, and one end of the screw rod is connected to the support member through the thrust bearing.

[0008] Furthermore, the adjustment component also includes a screw sleeve, which defines a threaded cavity, the threaded cavity is provided with a first internal thread corresponding to the external thread of the screw, the other end of the screw is arranged in the threaded cavity, the position of the screw sleeve in the vertical direction is fixed, and the screw sleeve can rotate when subjected to a driving force to drive the screw to move in the vertical direction.

[0009] Furthermore, the adjustment component also includes a first gear, which is fixedly connected to the screw sleeve. The driving force drives the first gear to rotate, thereby driving the screw sleeve to rotate.

[0010] Furthermore, the adjustment component also includes a second gear, which is meshed with the first gear and fixedly connected to the rotating shaft. The driving force drives the rotating shaft to rotate, thereby driving the first gear to rotate through the second gear.

[0011] Furthermore, the first gear and the second gear are bevel gears.

[0012] Furthermore, the adjustment assembly also includes a fixing nut, which is fixedly connected to the main body, and the fixing nut defines a nut cavity, the nut cavity is provided with a second internal thread corresponding to the external thread of the screw, and at least a portion of the area of ​​the screw located between the screw sleeve and the support member is arranged in the nut cavity.

[0013] Furthermore, an insulating pad is provided between the main body and the induction heating element.

[0014] Furthermore, the induction heating element is connected to an induction heating device, and the induction heating device is used to provide an induction current to the induction heating element, so that the induction heating element generates heat.

[0015] The device for welding the copper end ring of a motor provided in the present application can conveniently adjust the distance between the copper end ring to be welded and the induction heating element, so that the workpiece to be welded is heated evenly, thereby achieving a consistent melting speed of the welding rod, thereby improving the weld quality and welding speed, reducing the difficulty of operation, and improving welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Other objects and advantages of the present application will be apparent from the following description of the present application with reference to the accompanying drawings, which will help to provide a comprehensive understanding of the present application.

[0017] Figure 1 It is a cross-sectional view of a device for welding a copper end ring of a motor in the related art;

[0018] Figure 2 Is adopted Figure 1 Schematic diagram of the motor rotor after welding of the device shown;

[0019] Figure 3 is a cross-sectional view of a device for welding a copper end ring of a motor according to some embodiments of the present application;

[0020] Figure 4 It is a stereoscopic diagram of a device for welding copper end rings of motors according to some embodiments of the present application.

[0021] In the figure, 10 is a motor rotor, 110 is a rotor slot copper bar, 120 is an internal filling block, 130 is a copper end ring, 20 is a device for welding the copper end ring of a motor in the related art, 210 is an induction coil of the device for welding the copper end ring of a motor in the related art, 220 is an induction heating device of the device for welding the copper end ring of a motor in the related art, 230 is an insulating pad of the device for welding the copper end ring of a motor in the related art, 240 is an adjustment block of the device for welding the copper end ring of a motor in the related art, 30 is the device for welding the copper end ring of a motor in the present embodiment, 310 is the main body of the device for welding the copper end ring of a motor in the present embodiment, 320 is the induction heating member of the device for welding the copper end ring of a motor in the present embodiment, 330 is a support member of the device for welding the copper end ring of a motor in the present embodiment, and 340 is the device for welding the copper end ring of a motor in the present embodiment. The present invention relates to an adjusting component of the device for welding the copper end rings of the motor, 341 is the screw of the device for welding the copper end rings of the motor in this embodiment, 342 is the thrust bearing of the device for welding the copper end rings of the motor in this embodiment, 343 is the threaded sleeve of the device for welding the copper end rings of the motor in this embodiment, 344 is the first gear of the device for welding the copper end rings of the motor in this embodiment, 345 is the second gear of the device for welding the copper end rings of the motor in this embodiment, 346 is the rotating shaft of the device for welding the copper end rings of the motor in this embodiment, 347 is the fixing nut of the device for welding the copper end rings of the motor in this embodiment, 350 is the insulating pad of the device for welding the copper end rings of the motor in this embodiment, 360 is the induction heating device of the device for welding the copper end rings of the motor in this embodiment, and S is the distance formed between the copper end rings to be welded and the induction heating element. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with the drawings of the embodiments of the present application. Obviously, the described embodiment is one embodiment of the present application, not all embodiments. Based on the described embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0023] Unless otherwise defined, technical or scientific terms used in this application should have the common meanings understood by persons having ordinary skills in the field to which this application belongs.

[0024] Figure 1 is a cross-sectional view of a device 20 for welding a copper end ring of a motor in the related art; Figure 2 Is adopted Figure 1 The device shown is a schematic diagram of the motor rotor 10 after welding.

[0025] The motor is mainly composed of a motor rotor 10 and a motor stator. The motor rotor 10 is the rotating part in the motor and is the key part for the motor to achieve the mutual conversion between electrical energy and mechanical energy. The motor is composed of two parts, the rotor and the stator, which together realize the conversion and transmission of energy. The motor stator is the stationary part of a rotating motor such as a generator and an electric motor. It is opposite to the motor rotor 10. It is mainly composed of three parts: a stator core, a stator winding and a frame. The main function of the motor stator is to generate a rotating magnetic field, interact with the motor rotor 10, and realize the conversion between electrical energy and mechanical energy.

[0026] In the related art, the motor rotor 10 (motor rotor) is mainly divided into two types: copper bar welded rotor and cast aluminum rotor. The copper bar welded rotor is a copper bar rotor produced by welding technology. The copper bar rotor is an important component of the motor rotor. It is composed of copper bars and coils. The copper bar rotor coil provides magnetic field and electric energy, so that the motor can rotate. The copper bar is used to conduct electric energy, and the coil is used to generate a magnetic field. Since the copper bar welded rotor itself is well known to those skilled in the art, it will not be described here. The cast aluminum rotor refers to the motor rotor 10 produced by the casting process, and is named because its material is mainly aluminum. Since the cast aluminum rotor itself is well known to those skilled in the art, it will not be described here.

[0027] Copper bar welded rotors have higher efficiency levels and longer service life than cast aluminum rotors. However, the prerequisite is that the copper end rings 130 (the material of the copper end rings 130 is usually copper, because copper has high electrical conductivity and thermal conductivity, and is suitable for high-speed rotation and high-load working environments. The copper end rings 130 have good thermal conductivity and mechanical strength, which can ensure the stable operation of the motor) of the copper bar welded rotor need to be perfectly welded to the rotor slot copper bar 110 (the copper bar in the rotor slot, the rotor slot copper bar 110 is also called the rotor copper bar or copper bar, which refers to the conductive copper component installed in the rotor slot of the motor. Its main function is to transmit current during the operation of the motor, generate a rotating magnetic field, interact with the stator magnetic field, and realize the conversion of electrical energy into mechanical energy) and the internal filling block 120 (which can be a copper bar) to form a whole (see Figure 2 ). The specific structures of the rotor slot copper bar 110, the internal filling block 120 and the copper end ring 130 of the copper bar welded rotor are well known to those skilled in the art and will not be described in detail here.

[0028] The most basic welding requirement for the copper bar welding rotor is that the rotor slot copper bar 110 and the copper end ring 130 are firmly welded and there are no defects inside the welding. An important prerequisite for ensuring welding quality is that the induction spacing S between the induction coil 210 and the copper end ring 130 needs to be well controlled.

[0029] When the device 20 (welding tool) for welding the copper end ring of the motor in the related art is used, the induction spacing S is not well controlled, which often results in insufficient weld depth and the presence of pores and inclusions. Figure 1 .

[0030] The induction coil 210 provides a heat source for the workpiece to be welded. The induction welder forms an alternating magnetic field in the induction coil 210. The induction coil 210 generates eddy current loss in the alternating magnetic field. The eddy current loss generates a large amount of heat, thereby heating the workpiece to be welded. When the heating temperature reaches the melting temperature of the silver welding rod, the rotor slot copper bar 110, the copper end ring 130 and the internal filling block 120 are connected together with the melted silver welding rod, wherein the eddy current loss is determined by the spacing S. The principle of the induction coil 210 itself is well known to those skilled in the art and will not be repeated here.

[0031] The induction heating device 220 of the device 20 for welding the copper end ring of the motor in the related art is used to provide an induction current to the induction heating element, so that the induction heating element generates heat. The insulating pad 230 of the device 20 for welding the copper end ring of the motor in the related art reduces the loss of magnetic flux.

[0032] like Figure 1 As shown, the original motor rotor support tooling (device 20 for welding motor copper end rings in the related art) adjusts the spacing S as shown in the figure: the device is a welding method that uses medium frequency or power frequency induction current as a heat source; during induction brazing, the brazing part of the part is placed in an alternating magnetic field, and the heating of this part of the parent material is achieved by the resistance heat of the induced current generated by it in the alternating magnetic field. If the spacing S is too large, the smaller the current penetration depth, although the surface layer is heated rapidly, the thinner the heated thickness is, and the interior of the part can only be heated by heat conduction from the surface layer to the interior, which is the so-called skin effect. Such a disadvantage is that the surface of the part is overheated, and the interior of the part does not reach the welding temperature. When the interior reaches the welding temperature, the surface of the part melts due to the high temperature. If the spacing S is too small, it will result in no eddy current loss, resulting in failure to heat. It can be seen that the spacing S has a great influence on the effect of welding.

[0033] When adjusting the spacing S of the related art motor copper end ring welding device 20, the rotor needs to be lifted by a crane to increase or decrease the thickness of the adjustment block 240. The spacing S cannot be changed at any time during the welding process, which makes it difficult to control the quality of the motor rotor 10. Because each motor rotor 10 is different, the thickness needs to be adjusted frequently each time, resulting in low productivity and low yield of the motor rotor 10, and poor weld quality.

[0034] Therefore, this embodiment provides an improved welding tool for the motor copper end ring 130 (i.e., the device 30 for welding the motor copper end ring 130 in this embodiment) to solve the problem of uneven heating inside and outside the workpieces to be welded (rotor slot copper bar 110, internal filling block 120 and copper end ring 130), improve welding quality, reduce operation difficulty, and improve welding efficiency.

[0035] Figure 3 is a cross-sectional view of a device 30 for welding a copper end ring 130 of a motor according to some embodiments of the present application; Figure 4 is a stereoscopic view of a device 30 for welding a copper end ring 130 of a motor according to some embodiments of the present application.

[0036] The device 30 for welding the copper end ring 130 of a motor provided in this embodiment includes a main body 310 , an induction heating element 320 , a support element 330 and an adjustment assembly 340 .

[0037] The main body 310 defines a placement cavity, which has an upper opening, and the upper opening is used to allow one end of the motor rotor 10 to be welded to extend into the placement cavity, and the motor rotor 10 to be welded includes a copper end ring 130 to be welded. The induction heating element 320 (which can be an induction heating coil) is arranged on the main body 310, and the induction heating element 320 is used to provide heat when the copper end ring 130 to be welded is welded. The support member 330 (which can be a support block) is arranged in the placement cavity, and the support member 330 is used to support one end of the motor rotor 10 to be welded, so that a spacing S is formed between the copper end ring 130 to be welded and the induction heating element 320. The adjustment component 340 is connected to the support member 330, and is used to adjust the height of the support member 330, thereby adjusting the size of the spacing S.

[0038] The main body may be made of metal material, and part or all of the adjustment assembly 340 may be disposed in the placement cavity. The induction heating element 320 may be the induction coil 210 of the device 20 for welding the motor copper end ring 130 in the above-mentioned related art.

[0039] This device 30 for welding the copper end ring 130 of the motor can conveniently adjust the distance S between the copper end ring 130 to be welded and the induction heating element 320, so that the workpiece to be welded is heated evenly, so that the melting speed of the welding rod is consistent, the weld quality and welding speed are improved, the operation difficulty is reduced, and the welding efficiency is improved.

[0040] In some embodiments, the adjustment assembly 340 includes a screw 341 , one end of which is connected to the support member 330 , the axis of the screw 341 is along the vertical direction, and the screw 341 moves in the vertical direction through a thread, thereby driving the height adjustment of the support member 330 .

[0041] The screw 341 transmission method can ensure the stability of the transmission, the interference and impact during the transmission process are small, and the transmission noise is greatly reduced. The vertical screw 341 axial load capacity is higher than the oblique load capacity, which further enhances the stability of the transmission. In addition, the screw 341 transmission also has the advantages of high transmission efficiency, high precision, strong reliability, and large load-bearing capacity.

[0042] In some embodiments, the adjustment assembly 340 may further include a thrust bearing 342, through which one end of the screw rod 341 is connected to the support member 330. The thrust bearing 342, also known as a thrust bearing, is mainly composed of two thrust washers (a shaft piece and a seat piece) and a plurality of rolling elements. The rolling element is usually a steel ball or other shape that is combined into an integral body by an iron or copper cage. This structure enables the thrust bearing 342 to effectively bear and transmit axial loads.

[0043] The adjustment component 340 may also include a sleeve 343, which defines a threaded cavity. The sleeve 343 is provided with a first internal thread corresponding to the external thread of the screw rod 341. The other end of the screw rod 341 is arranged in the threaded cavity. The position of the sleeve 343 in the vertical direction is fixed, and the sleeve 343 can rotate when subjected to a driving force to drive the screw rod 341 to achieve vertical movement.

[0044] The screw sleeve 343 is a hollow part with internal threads, usually cylindrical or conical. Its material can be various, including brass, stainless steel, carbon steel, etc., which can adapt to different working environments and needs. The main function of the screw sleeve 343 is to strengthen the threaded connection and improve the strength and durability of the connection.

[0045] The adjustment assembly 340 may further include a first gear 344 fixedly connected to the screw sleeve 343 . The driving force drives the first gear 344 to rotate, thereby driving the screw sleeve 343 to rotate.

[0046] Gear transmission is achieved through the meshing of gear teeth. The friction loss during the transmission process is relatively small, so the transmission efficiency is high. In addition, the gear transmission method also has the advantages of stable transmission ratio, compact structure and strong reliability.

[0047] The adjustment assembly 340 may further include a second gear 345 , which meshes with the first gear 344 . The second gear 345 is fixedly connected to the rotating shaft 346 . The driving force drives the rotating shaft 346 to rotate, thereby driving the first gear 344 to rotate through the second gear 345 .

[0048] Specifically, the first gear 344 and the second gear 345 are bevel gears. A bevel gear is a gear whose shape is similar to an open bevel, hence the name. Its tooth surface is conical, which can realize transmission between axes of different planes or different angles. The tooth surface of the bevel gear has high hardness and strength, and can withstand large loads, which is suitable for occasions where high power needs to be transmitted. The vibration and noise during the meshing process of the bevel gear are relatively small, and the operation is smooth. The bevel gear reducer can provide an accurate transmission ratio and is suitable for occasions that require precise speed control. Due to the material and processing technology of the bevel gear, its service life is usually longer. The bevel gear reducer has a certain self-locking property to prevent reverse rotation.

[0049] In some embodiments, the adjustment assembly 340 may further include a fixing nut 347, which is fixedly connected to the main body 310, and defines a nut cavity, which is provided with a second internal thread corresponding to the external thread of the screw rod 341, and at least a portion of the area of ​​the screw rod 341 between the screw sleeve 343 and the support member 330 is provided in the nut cavity. The fixing nut 347 may play a certain limiting role.

[0050] In some embodiments, an insulating pad 350 is provided between the main body 310 and the induction heating element 320. Thus, the loss of magnetic flux is reduced. The insulating pad 350 may be the insulating pad 230 of the device 20 for welding the motor copper end ring 130 in the above-mentioned related art. In some embodiments, the insulating pad 350 of the device 30 for welding the motor copper end ring 130 of this embodiment may be larger in height direction than the insulating pad 230 of the device 20 for welding the motor copper end ring 130 in the above-mentioned related art.

[0051] In some embodiments, the induction heating element 320 is connected to an induction heating device 360, which is used to provide an induction current to the induction heating element 320, so that the induction heating element 320 generates heat. The induction heating device 360 ​​can be the induction heating device 220 of the device 20 for welding the motor copper end ring 130 in the above-mentioned related art.

[0052] In this embodiment, the motor rotor 10 support fixture is redesigned; a meshing bevel gear, a thrust bearing 342, a screw 341, a screw sleeve 343, a fixing nut 347, a support block and a rotating shaft 346 are added inside the fixture; the rotor to be welded is placed on the insulating pad 350, and the insulating pad 350 and the motor rotor 10 support fixture are fixed by screws; when the spacing S needs to be adjusted, the rotating shaft 346 is shaken by a wrench; the rotating shaft 346 drives the meshing bevel gear to rotate, and at the same time, the screw sleeve 343 fixed with the meshing bevel gear rotates together; since the screw sleeve 343 and the screw 341 are connected by threads, when the screw sleeve 343 rotates, it drives the screw 341 to rotate in the opposite direction, thereby realizing the axial movement of the screw 341; the other end of the screw 341 is equipped with a thrust bearing 342, and the thrust bearing 342 is placed in the support block, so that when the screw 341 moves axially, the spacing S can be easily adjusted. This changes the original problem of reduced welding quality due to uneven heating inside and outside, and greatly improves labor productivity.

[0053] Due to the use of new tooling, the workpiece is heated evenly and the welding rod melts at a consistent speed, which improves the weld quality and welding speed, reduces the operating difficulty and improves welding efficiency; the new support tooling increases the insulation height and reduces the loss of magnetic flux.

[0054] The device 30 for welding the copper end ring 130 of the motor in this embodiment adds a meshing bevel gear pair, so that the spacing S can be easily adjusted to a suitable process parameter at any time, so that the workpiece is heated evenly, the melting speed of the welding rod is consistent, the weld quality and welding speed are improved, and the operation difficulty is reduced, and the welding efficiency is improved. After testing, the use of the device 30 for welding the copper end ring 130 of the motor in production improves the welding quality and the welding efficiency, and saves about 30% of energy loss compared with the device 30 for welding the copper end ring 130 of the motor in the related art.

[0055] The device 30 for welding the motor copper end ring 130 in the related art is difficult to adjust the spacing S, which often leads to excessively high surface temperature of the workpiece, resulting in melting, and the temperature of the part to be heated does not reach the melting temperature of the welding rod, and the welding rod melts slowly after being placed on it; and induction brazing requires the welding action to be completed in a short time, resulting in low welding quality and great difficulty in operation. Moreover, each adjustment requires the motor rotor 10 to be lifted away, each welding takes too much time and consumes a lot of energy.

[0056] The device 30 for welding the motor copper end ring 130 of this embodiment can conveniently adjust the spacing S at any time. It directly realizes the rapid heating of the part of the workpiece to be heated. It improves the brazing quality and reduces the difficulty of operation; reduces the distortion and oxidation of the workpiece and improves the productivity. Some components of the device 30 for welding the motor copper end ring 130 of this embodiment can adopt the device 30 for welding the motor copper end ring 130 in the related art, such as an induction heating coil.

[0057] Regarding the embodiments of the present application, it should also be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other to obtain new embodiments.

[0058] The above are only specific implementation methods of the present application, but the protection scope of the present application is not limited thereto. The protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A device for welding copper end rings of motors, characterized in that: include: A main body, wherein the main body defines a placement cavity, the placement cavity has an upper opening, and the upper opening is used to allow one end of a motor rotor to be welded to extend into the placement cavity, and the motor rotor to be welded includes a copper end ring to be welded; An induction heating element, arranged on the main body, and used to provide heat for welding the copper end ring to be welded; A support member is disposed in the placement cavity, and is used to support one end of the motor rotor to be welded, so that a distance is formed between the copper end ring to be welded and the induction heating element; An adjusting component is connected to the supporting member and is used to adjust the height of the supporting member, thereby adjusting the size of the spacing.

2. The device for welding the copper end ring of a motor according to claim 1, characterized in that: The adjustment component comprises: A screw rod, one end of which is connected to the support member, the axis of which is along the vertical direction, and the screw rod is moved in the vertical direction by means of a thread, thereby driving the height adjustment of the support member.

3. The device for welding the copper end ring of a motor according to claim 2, characterized in that: The adjustment component also includes: A thrust bearing, one end of the screw rod is connected to the support member through the thrust bearing.

4. The device for welding the copper end ring of a motor according to claim 2, characterized in that: The adjustment component also includes: The screw sleeve defines a threaded cavity, the threaded cavity is provided with a first internal thread corresponding to the external thread of the screw rod, the other end of the screw rod is arranged in the threaded cavity, the position of the screw sleeve in the vertical direction is fixed, and the screw sleeve can rotate when subjected to a driving force to drive the screw rod to achieve vertical movement.

5. The device for welding the copper end ring of a motor according to claim 4, characterized in that: The adjustment component also includes: The first gear is fixedly connected to the screw sleeve, and the driving force drives the first gear to rotate, thereby driving the screw sleeve to rotate.

6. The device for welding the copper end ring of a motor according to claim 5, characterized in that: The adjustment component also includes: The second gear is meshed with the first gear, and the second gear is fixedly connected to the rotating shaft. The driving force drives the rotating shaft to rotate, thereby driving the first gear to rotate through the second gear.

7. The device for welding the copper end ring of a motor according to claim 6, characterized in that: The first gear and the second gear are bevel gears.

8. The device for welding the copper end ring of a motor according to claim 4, characterized in that: The adjustment component also includes: A fixing nut is fixedly connected to the main body, the fixing nut defines a nut cavity, the nut cavity is provided with a second internal thread corresponding to the external thread of the screw, and at least a portion of the area of ​​the screw located between the sleeve and the support member is arranged in the nut cavity.

9. The device for welding the copper end ring of a motor according to claim 1, characterized in that: An insulating pad is arranged between the main body and the induction heating element.

10. The device for welding the copper end ring of a motor according to claim 1, characterized in that: The induction heating element is connected to an induction heating device, and the induction heating device is used to provide an induction current to the induction heating element, so that the induction heating element generates heat.

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