Welding device for transformer shell

Abstract

The utility model discloses a welding device for a transformer shell, which comprises a welding platform comprising a welding position, a positioning component and a heating component, the positioning component comprises a positioning driving part and a positioning plate, and the height of the positioning plate is smaller than that of the transformer shell; the heating assembly comprises a heating driving part and an electromagnetic heating plate, the heating driving part can drive the electromagnetic heating plate to move to cover the transformer shell on the welding position or stagger the transformer shell on the welding position, and the lower surface of the electromagnetic heating plate is flush with the upper surface of a workpiece in the welding position; and the welding assembly is located above the welding platform and comprises a welding head and a welding driving piece, and the welding driving piece can drive the welding head to move along a preset welding track. The transformer shell in the welding position is preheated through the electromagnetic heating plate, it is ensured that the temperature of the welding face is increased before welding, damage to the transformer shell caused by the instantaneous welding temperature is avoided, and the welding quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer shell welding, in particular to a welding device for a transformer shell. Background Art

[0002] The shell type transformer has a compact and simple structure and has been widely used in small power transformers. The transformer shell is the outer protective cover of the transformer, usually made of metal. It is an important component to protect the internal electrical components of the transformer from external influences. At the same time, the transformer shell also has the functions of protection, isolation, and heat dissipation.

[0003] When welding a transformer housing, the prior art is to directly weld the transformer housing after positioning it. Since the instantaneous temperature during welding is much higher than normal temperature, the weld is directly affected by the welding heat source, which is prone to cracks or deformation, thereby affecting the normal performance of the transformer housing. Utility Model Content

[0004] In view of this, the present application aims to solve the problems in the related art to at least a certain extent. One of the purposes of the present application is to provide a welding device for a transformer housing, which uses an electromagnetic heating plate to preheat the transformer housing in the welding position to ensure that the temperature of the welding surface is increased before welding, thereby avoiding damage to the transformer housing caused by instantaneous welding temperature and improving the welding quality.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical solution: a welding device for a transformer housing, comprising:

[0006] A welding platform comprises a welding position, a positioning assembly and a heating assembly, wherein the positioning assembly and the heating assembly are both located at the side of the welding position; the positioning assembly comprises a positioning driver and a positioning plate, the height of the positioning plate is less than the height of the transformer housing; the heating assembly comprises a heating driver and an electromagnetic heating plate, the heating driver can drive the electromagnetic heating plate to move to cover the transformer housing on the welding position or stagger the transformer housing on the welding position, and the lower surface of the electromagnetic heating plate is flush with the upper surface of the workpiece in the welding position;

[0007] A welding assembly is located above the welding platform, and the welding assembly includes a welding head and a welding driver. The welding driver can drive the welding head to move along a preset welding track.

[0008] Furthermore, a coil is provided in the electromagnetic heating plate, and the transformer housing is a metal housing.

[0009] Furthermore, a lifting drive component is provided in the welding position, the transformer housing is located in the lifting drive component, and the lifting drive component is used to drive the transformer housing to be lifted and lowered relative to the positioning plate.

[0010] Furthermore, there are four positioning components, which are respectively located at four sides of the welding position; and the transformer housing is a rectangular parallelepiped structure.

[0011] Furthermore, when the positioning drive member drives the positioning plate to abut against the transformer housing, on the contact surface between the positioning plate and the transformer housing, the cross-sectional area of ​​the positioning plate is smaller than the corresponding cross-sectional area of ​​the transformer housing.

[0012] Furthermore, a positioning slide rail is provided on the welding platform, and the positioning drive component and the positioning plate are both located in the positioning slide rail.

[0013] Furthermore, there are two heating components, which are respectively arranged above two symmetrical positioning components; the heating drive component is slidably connected to the corresponding positioning drive component, the electromagnetic heating plate is located above the corresponding positioning plate, and the electromagnetic heating plate and the positioning plate are provided with first fixed through holes and second fixed through holes corresponding to each other, and when the positioning column is inserted into the first fixed through hole and the second fixed through hole, the electromagnetic heating plate is fixedly connected to the positioning plate; when the positioning column is pulled out of the first fixed through hole and the second fixed through hole, the heating drive component can drive the electromagnetic heating plate to move in the direction of covering the transformer housing.

[0014] Furthermore, temperature sensors are provided in two positioning plates adjacent to the electromagnetic heating plate.

[0015] Furthermore, a limiting slide rail parallel to the positioning slide rail is arranged above the positioning drive component. When the positioning plate and the electromagnetic heating plate are fixed together, the positioning drive component simultaneously drives the positioning plate, the electromagnetic heating plate and the heating drive component to move toward or away from the welding position.

[0016] Furthermore, the welding platform is located inside the frame, a control platform is provided on the top of the frame, a welding assembly is provided in the control platform, the welding assembly includes a first welding drive component, a second welding drive component and a third welding drive component, a first slide rail extending along the X-axis direction is provided in the frame, a second slide rail extending along the Y-axis direction is provided on the side of the welding assembly close to the welding position, and the welding head is located in the second slide rail; the first welding drive component drives the welding assembly to move along the first slide rail, the second welding drive component drives the welding head to move along the second slide rail, and the third welding drive component drives the welding head to rise and fall.

[0017] The above-mentioned technical solution provided by the embodiment of the present application has the following advantages compared with the prior art: the welding device of the present application includes a welding platform and a welding assembly, wherein the welding platform includes a welding position, a positioning assembly and a heating assembly, wherein the positioning assembly is located on the side of the welding position; the positioning assembly includes a positioning drive and a positioning plate, the height of the positioning plate is less than the height of the transformer housing, and when the transformer housing is placed on the welding position, the positioning drive drives the positioning plate to limit the transformer housing from the side. The heating assembly includes a heating drive and an electromagnetic heating plate, the heating drive can drive the electromagnetic heating plate to move to cover the transformer shell on the welding position or stagger the transformer shell on the welding position, and the lower surface of the electromagnetic heating plate is flush with the upper surface of the workpiece in the welding position; that is, the lower surface of the electromagnetic heating plate is flush with the upper surface of the transformer shell, when the transformer shell is limited, the heating drive can drive the electromagnetic heating plate to move to the position covering the transformer shell, and the electromagnetic heating plate can heat the upper surface of the transformer shell after being energized to form a preheating of the welding surface of the transformer shell. After the preheating is completed, the heating drive drives the electromagnetic heating plate to move to a position misaligned with the transformer shell, at this time, the welding head welds the transformer shell along a preset welding trajectory. In this application, the positioning plate is used to position the side of the transformer shell so that the upper surface of the transformer shell is exposed. At the same time, the lower surface of the electromagnetic heating plate is flush with the upper surface of the transformer shell, that is, the electromagnetic heating plate and the positioning plate are misaligned and moved, and the two will not interfere with each other, and the limiting and preheating of the transformer shell are achieved at different heights. After preheating is completed, the welding drive drives the welding head to move along a preset welding trajectory to achieve welding on the upper surface of the transformer shell; the present application can achieve preheating of the transformer shell before welding, avoid shell deformation and cracks caused by instantaneous excessive temperature during direct welding, and improve the welding quality of the transformer shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0020] Figure 1 is a schematic diagram of the side surface of the welding device;

[0021] Figure 2 It is a top view of the welding platform;

[0022] Figure 3 A top view of the control platform.

[0023] Reference numerals:

[0024] 10. Welding platform; 11. Lifting drive; 12. Transformer housing; 13. Positioning drive; 14. Positioning plate; 15. Heating drive; 16. Electromagnetic heating plate; 20. Frame; 21. Control platform; 22. First slide rail; 23. Second slide rail; 24. Welding head; 25. Welding assembly. DETAILED DESCRIPTION

[0025] In order to have a clearer understanding of the technical features, purposes and effects of the present application, the specific implementation methods of the present application are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "up", "down", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inside", "outside", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings, are constructed and operated in a specific direction, and are only for the convenience of describing the present technical solution, rather than indicating that the mechanism or element referred to must have a specific direction, and therefore cannot be understood as a limitation to the present application.

[0026] It should also be noted that, unless otherwise clearly specified and limited, the terms such as "installed", "connected", "connected", "fixed", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intermediate elements. The terms "first", "second", "third", etc. are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third", etc. can explicitly or implicitly include one or more of the features. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0027] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, mechanisms, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application. Example 1

[0028] like Figure 1-Figure 3 As shown, the present application proposes a welding device for a transformer housing, comprising:

[0029] The welding platform 10 includes a welding position, a positioning assembly and a heating assembly, wherein the positioning assembly and the heating assembly are both located at the side of the welding position; the positioning assembly includes a positioning driver 13 and a positioning plate 14, and the height of the positioning plate 14 is less than the height of the transformer housing 12; the heating assembly includes a heating driver 15 and an electromagnetic heating plate 16, and the heating driver 15 can drive the electromagnetic heating plate 16 to move to cover the transformer housing 12 on the welding position or stagger the transformer housing 12 on the welding position, and the lower surface of the electromagnetic heating plate 16 is flush with the upper surface of the workpiece in the welding position;

[0030] The welding assembly 25 is located above the welding platform 10, and the welding assembly 25 includes a welding head 24 and a welding driver. The welding driver can drive the welding head 24 to move along a preset welding track.

[0031] The height of the positioning plate 14 described in the present application is less than the height of the transformer housing 12. When the transformer housing 12 is placed on the welding position, the positioning drive 13 drives the positioning plate 14 to limit the transformer housing 12 from the side. The lower surface of the electromagnetic heating plate 16 is flush with the upper surface of the transformer housing 12. After the transformer housing 12 is limited, the heating drive 15 can drive the electromagnetic heating plate 16 to move to a position covering the transformer housing 12. After the electromagnetic heating plate 16 is powered on, it can heat the upper surface of the transformer housing 12 to form a preheating of the welding surface of the transformer housing 12. After the preheating is completed, the heating drive 15 drives the electromagnetic heating plate 16 to move to a position misaligned with the transformer housing 12. At this time, the welding head 24 welds the transformer housing 12 along a preset welding trajectory.

[0032] In the present application, the positioning plate 14 is used to position the side of the transformer housing 12 so that the upper surface of the transformer housing 12 is exposed. At the same time, the lower surface of the electromagnetic heating plate 16 is flush with the upper surface of the transformer housing 12, that is, the electromagnetic heating plate 16 and the positioning plate 14 are dislocated and moved, and the two will not interfere with each other, and the transformer housing 12 is limited and preheated at different heights. After the preheating is completed, the welding drive drives the welding head 24 to move along the preset welding track to achieve welding of the upper surface of the transformer housing 12; the present application can achieve preheating of the transformer housing 12 before welding, avoid the deformation and cracking of the housing caused by the instantaneous excessive temperature during direct welding, and improve the welding quality of the transformer housing 12. Example 2

[0033] like Figure 1-Figure 3 As shown, the present application proposes a welding device for a transformer housing, comprising:

[0034] The welding platform 10 includes a welding position, a positioning assembly and a heating assembly, wherein the positioning assembly and the heating assembly are both located at the side of the welding position; the positioning assembly includes a positioning driver 13 and a positioning plate 14, and the height of the positioning plate 14 is less than the height of the transformer housing 12; the heating assembly includes a heating driver 15 and an electromagnetic heating plate 16, and the heating driver 15 can drive the electromagnetic heating plate 16 to move to cover the transformer housing 12 on the welding position or stagger the transformer housing 12 on the welding position, and the lower surface of the electromagnetic heating plate 16 is flush with the upper surface of the workpiece in the welding position;

[0035] The welding assembly 25 is located above the welding platform 10, and the welding assembly 25 includes a welding head 24 and a welding driver. The welding driver can drive the welding head 24 to move along a preset welding track.

[0036] In the present application, a coil is arranged in the electromagnetic heating plate 16, and the transformer housing 12 is a metal housing. When the coil is energized, the electromagnetic heating plate 16 will heat up, and when the coil is de-energized, the electromagnetic heating plate 16 stops heating. The transformer housing 12 itself is made of metal. When the lower surface of the electromagnetic heating plate 16 abuts against the upper surface of the transformer housing 12, the electromagnetic heating plate 16 can preheat the transformer housing 12.

[0037] A lifting drive 11 is provided in the welding position of the present application, and the transformer housing 12 is located in the lifting drive 11, and the lifting drive 11 is used to drive the transformer housing 12 to lift relative to the positioning plate 14. The purpose of the lifting drive 11 is to ensure that the positioning plate 14 is always located on the side of the transformer housing 12, and the lower surface of the electromagnetic heating plate 16 is always located at a position flush with the upper surface of the transformer housing 12. Among them, the heights of the positioning plate 14 and the electromagnetic heating plate 16 are fixed. When the model or height of the transformer housing 12 changes, the transformer housing 12 is driven to lift by the lifting drive 11 to ensure that the positioning plate 14 is always located on the side of the transformer housing 12, and the lower surface of the electromagnetic heating plate 16 is always located at a position flush with the upper surface of the transformer housing 12, so as to achieve the side limit of the transformer housing 12 and the preheating of the upper surface.

[0038] In the present application, the transformer housing 12 is a rectangular parallelepiped structure, and correspondingly, there are four positioning components, which are respectively located at the four sides of the welding position. Each positioning component includes a positioning drive 13 and a positioning plate 14, and each positioning plate 14 corresponds to a side of the transformer housing 12, and is used to limit the transformer housing 12 from four sides to ensure that the position of the transformer housing 12 is fixed during the preheating or welding process, and the welding of the preset track on the top of the transformer housing 12 is achieved by moving the welding head 24.

[0039] When the positioning drive 13 drives the positioning plate 14 to abut against the transformer housing 12, on the contact surface between the positioning plate 14 and the transformer housing 12, the cross-sectional area of ​​the positioning plate 14 is smaller than the corresponding cross-sectional area of ​​the transformer housing 12. The function of the positioning plate 14 is only to limit the transformer housing 12 from four directions. If the cross-sectional area of ​​the positioning plate 14 is larger than the cross-sectional area of ​​the transformer, it will cause interference between the four positioning plates 14, affecting the positioning of the transformer housing 12. Therefore, the present application is limited to the contact surface between the positioning plate 14 and the side of the transformer housing 12, and the cross-sectional area of ​​the positioning plate 14 is smaller, and no matter how the model of the transformer changes, the cross-sectional area of ​​the positioning plate 14 needs to be smaller than the corresponding side area of ​​the transformer housing 12.

[0040] In the present application, a positioning slide rail (not shown) is provided on the welding platform 10, and the positioning drive member 13 and the positioning plate 14 are both located in the positioning slide rail. Since the positioning components are two groups symmetrically arranged, the positioning slide rail can be two vertical slide rails extending in a cross shape, and the positioning components on the left and right sides of the welding platform 10 are located in the same positioning slide rail, and the positioning components on the front and rear sides are located in another positioning slide rail.

[0041] In the present application, both the positioning drive member 13 and the positioning plate 14 can move along the positioning slide rail. When the positioning drive member 13 moves along the positioning slide rail, the positioning drive member 13 and the positioning plate 14 move synchronously, which can be understood as coarse adjustment, so that the positioning assembly can quickly reach the side position of the transformer housing 12; when the position of the positioning drive member 13 is fixed, the positioning drive member 13 can drive the positioning plate 14 to move along the positioning slide rail to achieve the abutment and separation of the positioning plate 14 and the transformer housing 12.

[0042] In the present application, the heating assembly can be arranged in a staggered manner with the positioning assembly, that is, the heating assembly is arranged in the gap between two adjacent positioning assemblies, and at the same time, the height of the electromagnetic heating plate 16 in the heating assembly needs to be higher than the upper surface of the positioning plate 14. After the positioning assembly limits the transformer housing 12, the heating drive 15 pushes the electromagnetic heating plate 16 to cover the transformer housing 12 at the welding position to achieve preheating of the transformer housing 12. After the preheating is completed, the heating drive 15 pushes the electromagnetic heating plate 16 to reset, reserving space for the movement of the welding head 24.

[0043] In the present application, the heating assembly can also be integrated with the positioning assembly. Specifically, there are two heating assemblies, which are respectively arranged above two symmetrical positioning assemblies; the heating drive 15 is slidably connected with the corresponding positioning drive 13, and the electromagnetic heating plate 16 is located above the corresponding positioning plate 14. The electromagnetic heating plate 16 and the positioning plate 14 are provided with a first fixed through hole and a second fixed through hole corresponding to each other. When the positioning column is inserted into the first fixed through hole and the second fixed through hole, the electromagnetic heating plate 16 is fixedly connected with the positioning plate 14; when the positioning column is pulled out of the first fixed through hole and the second fixed through hole, the heating drive 15 can drive the electromagnetic heating plate 16 to move in the direction of covering the transformer housing 12.

[0044] Take one of the heating components as an example for explanation: after the electromagnetic heating plate 16 and the positioning plate 14 are fixed by the positioning column, the electromagnetic heating plate 16, the positioning plate 14 and the heating drive 15 are a unified whole, and the positioning drive 13 can push the electromagnetic heating plate 16, the positioning plate 14 and the heating drive 15 to move as a whole. The present application also stipulates that a limiting slide rail (not shown in the figure) parallel to the positioning slide rail is provided above the positioning drive 13. When the positioning plate 14 and the electromagnetic heating plate 16 are fixed together, the positioning drive 13 simultaneously drives the positioning plate 14, the electromagnetic heating plate 16 and the heating drive 15 to move in a direction close to or away from the welding position, and during the movement, the heating drive 15 slides along the positioning slide rail on the upper surface of the positioning drive 13.

[0045] After the positioning column is removed, the position of the positioning plate 14 is fixed, that is, it has abutted against the transformer housing 12. At this time, the heating drive 15 pushes the electromagnetic heating plate 16 to move in the direction of covering the transformer housing 12, so that the electromagnetic heating plate 16 covers the transformer housing 12. At the same time, in the present application, there are two symmetrically arranged electromagnetic heating plates 16, and the two electromagnetic heating plates 16 are respectively close to the center of the transformer housing 12 from both sides. The heating drive 15 controls the electromagnetic heating plate 16 to cover the surface of the transformer housing 12 according to the size of the transformer housing 12.

[0046] In the present application, due to the height difference between the electromagnetic heating plate 16 and the positioning plate 14, the two can be integrated together and staggered in height, which can simplify the design and floor space of each component in the welding platform 10.

[0047] Furthermore, in the present application, temperature sensors are provided in the two positioning plates 14 adjacent to the electromagnetic heating plate 16. Since the transformer housing 12 is made of metal, when the upper surface of the transformer housing 12 is heated, the preheating temperature can be fed back through the temperature sensor on its side in view of the good heat transfer performance of the metal material. It should be noted that the temperature sensor is located on the side of the transformer housing 12, and the electromagnetic heating plate 16 is located above the transformer housing 12, and the temperature value monitored by the temperature sensor will be lower than the preheating temperature. The present application can determine the power-on time of the electromagnetic heating plate 16, etc. according to the monitoring value of the temperature sensor.

[0048] In the present application, the welding platform 10 is located inside the frame 20, and a control platform 21 is arranged on the top of the frame 20. The control platform 21 is arranged parallel to the welding platform 10, and a welding assembly 25 is arranged in the control platform 21. The welding assembly 25 includes a first welding driver, a second welding driver and a third welding driver. A first slide rail 22 extending along the X-axis direction is arranged in the frame 20, and a second slide rail 23 extending along the Y-axis direction is arranged on the side of the welding assembly 25 close to the welding position, and the welding head 24 is located in the second slide rail 23; the first welding driver drives the welding assembly to move along the first slide rail 22, the second welding driver drives the welding head 24 to move along the second slide rail 23, and the third welding driver drives the welding head 24 to rise and fall.

[0049] When the transformer housing 12 is positioned and preheated, the third welding driver drives the welding head 24 to move to a position higher than the transformer housing 12. After the preheating is completed and the electromagnetic heating plate 16 is reset, the third welding driver drives the welding head 24 to move to the upper surface of the transformer housing 12. During the welding process, according to the preset welding path, the first welding driver and the second welding driver respectively drive the welding head 24 to move and weld along the preset trajectory.

[0050] The positioning plate 14 of the present application is used to position the side of the transformer housing 12 so that the upper surface of the transformer housing 12 is exposed. At the same time, the lower surface of the electromagnetic heating plate 16 is flush with the upper surface of the transformer housing 12, and the transformer housing 12 is limited and preheated at different heights. After the preheating is completed, the welding drive drives the welding head 24 to move along the preset welding track to achieve welding of the upper surface of the transformer housing 12; the present application can achieve preheating of the transformer housing 12 before welding, avoid deformation and cracks of the housing caused by excessive instantaneous temperature during direct welding, and improve the welding quality of the transformer housing 12.

[0051] It can be understood that the above embodiments only express the preferred implementation methods of the present application, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present application; it should be pointed out that for ordinary technicians in this field, without departing from the concept of the present application, the above-mentioned technical features can be freely combined, and several deformations and improvements can be made, which all belong to the protection scope of the present application; therefore, all equivalent changes and modifications made to the scope of the claims of the present application should belong to the scope covered by the claims of the present application.

Claims

1. A welding device for a transformer housing, characterized in that: include: A welding platform comprises a welding position, a positioning assembly and a heating assembly, wherein the positioning assembly and the heating assembly are both located at the side of the welding position; the positioning assembly comprises a positioning driver and a positioning plate, the height of the positioning plate is less than the height of the transformer housing; the heating assembly comprises a heating driver and an electromagnetic heating plate, the heating driver can drive the electromagnetic heating plate to move to cover the transformer housing on the welding position or stagger the transformer housing on the welding position, and the lower surface of the electromagnetic heating plate is flush with the upper surface of the workpiece in the welding position; A welding assembly is located above the welding platform, and the welding assembly includes a welding head and a welding driver. The welding driver can drive the welding head to move along a preset welding track.

2. A welding device for transformer housing according to claim 1, characterized in that: The electromagnetic heating plate is provided with a coil, and the transformer housing is a metal housing.

3. A welding device for transformer housing according to claim 1, characterized in that: A lifting drive member is provided in the welding position, the transformer housing is located in the lifting drive member, and the lifting drive member is used to drive the transformer housing to be lifted and lowered relative to the positioning plate.

4. A welding device for transformer housing according to claim 1, characterized in that: There are four positioning components, which are respectively located at four sides of the welding position; the transformer housing is a rectangular parallelepiped structure.

5. A welding device for transformer housing according to claim 4, characterized in that: When the positioning drive member drives the positioning plate to abut against the transformer housing, at the contact surface between the positioning plate and the transformer housing, the cross-sectional area of ​​the positioning plate is smaller than the corresponding cross-sectional area of ​​the transformer housing.

6. A welding device for transformer housing according to claim 4, characterized in that: The welding platform is provided with a positioning slide rail, and the positioning drive member and the positioning plate are both located in the positioning slide rail.

7. A welding device for transformer housing according to claim 4, characterized in that: There are two heating components, which are respectively arranged above two symmetrical positioning components; the heating drive component is slidably connected to the corresponding positioning drive component, and the electromagnetic heating plate is located above the corresponding positioning plate. The electromagnetic heating plate and the positioning plate are provided with first and second fixed through holes corresponding to each other. When the positioning column is inserted into the first and second fixed through holes, the electromagnetic heating plate is fixedly connected to the positioning plate; when the positioning column is pulled out of the first and second fixed through holes, the heating drive component can drive the electromagnetic heating plate to move in the direction of covering the transformer housing.

8. A welding device for transformer housing according to claim 7, characterized in that: Temperature sensors are arranged in two positioning plates adjacent to the electromagnetic heating plate.

9. A welding device for transformer housing according to claim 7, characterized in that: A limiting slide rail parallel to the positioning slide rail is arranged above the positioning drive component. When the positioning plate and the electromagnetic heating plate are fixed together, the positioning drive component simultaneously drives the positioning plate, the electromagnetic heating plate and the heating drive component to move toward or away from the welding position.

10. A welding device for transformer housing according to claim 1, characterized in that: The welding platform is located inside the frame, a control platform is provided on the top of the frame, a welding assembly is provided in the control platform, the welding assembly includes a first welding drive component, a second welding drive component and a third welding drive component, a first slide rail extending along the X-axis direction is provided in the frame, a second slide rail extending along the Y-axis direction is provided on the side of the welding assembly close to the welding position, and the welding head is located in the second slide rail; the first welding drive component drives the welding assembly to move along the first slide rail, the second welding drive component drives the welding head to move along the second slide rail, and the third welding drive component drives the welding head to rise and fall.

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