Welding positioning device for transformer laminations

Abstract

The invention provides a welding positioning device for transformer laminations, which comprises a main plate, a bottom plate arranged on the upper surface of the main plate, a positioning block arranged above the bottom plate and a crimping part, the positioning block is constructed to be provided with a limiting opening, a notch is formed in one side of the limiting opening, the limiting opening forms a limiting inner wall on the inner side of the notch, and the crimping part is arranged on the inner side of the limiting inner wall. The EI laminations can enter the limiting openings through the notches and make contact with the limiting inner walls, and crimping parts are arranged above the limiting openings and can abut against the EI laminations stacked to different heights from the upper surface of the bottom plate. According to EI sheets of various models, the EI lamination welding uniformity and the EI lamination welding efficiency can be improved.

Description

Technical Field

[0001] The invention relates to the field of transformer manufacturing, and in particular to a welding positioning device for transformer laminations. Background Art

[0002] The E-sheet and I-sheet of the transformer are in the shape of "E" and "I" respectively. Both are made of silicon steel sheets and are mainly used for magnetic conductivity, magnetic circuit improvement, reducing core loss and improving transformer efficiency. During the welding of EI laminations, if the EI laminations are not aligned, it will affect the magnetic flux and impedance of the single-phase shell-type transformer, and thus affect the overall electrical performance of the transformer. An EI lamination welding positioning device is usually used to improve the neatness and efficiency when welding the EI laminations. Since single-phase shell-type transformers have many different models, the positioning device needs to position the EI laminations according to various different models. Existing positioning devices are usually complex in structure and cannot achieve quick clamping of the EI laminations and welding. Summary of the invention

[0003] One object of the present invention is to provide a welding positioning device for transformer laminations, so as to improve the uniformity of lamination welding and the welding efficiency of EI laminations for various types of EI laminations.

[0004] According to the present invention, there is provided a welding positioning device for transformer laminations, comprising: a main board, a bottom plate arranged on the upper surface of the main board, a positioning block arranged above the bottom plate, and a crimping component, wherein the positioning block is configured to have a limiting opening, a notch on one side of the limiting opening, the limiting opening forming a limiting inner wall on the inner side of the notch, an EI lamination can enter the limiting opening through the notch and contact the limiting inner wall, the crimping component is arranged above the limiting opening, and the crimping component can press against the EI laminations stacked to different heights from the upper surface of the bottom plate.

[0005] In a preferred embodiment, the welding positioning device for transformer laminations also includes: a clamp with a clamp arm, and the crimping component includes: a crimping bolt passing through the clamp arm from bottom to top and a limiting nut connected to the crimping bolt, and by screwing the limiting nut, the height of the lower end face of the crimping bolt from the upper surface of the positioning block can be adjusted.

[0006] In a preferred embodiment, the welding positioning device for transformer laminations further comprises: a tube column arranged on the upper surface of the main board, the positioning block is arranged on the upper surface of the tube column and connected to the tube column via a threaded member.

[0007] In a preferred embodiment, the welding positioning device for transformer laminations further comprises: a fixing column disposed on the upper surface of the main board, and the clamp is disposed on the upper surface of the fixing column.

[0008] In a preferred embodiment, the fixing column is connected to the main board via a screw.

[0009] In a preferred embodiment, the corners of the positioning block near the notch are rounded, and the edges are polished to remove burrs.

[0010] In a preferred embodiment, the clamp is a vertical clamp.

[0011] In a preferred embodiment, the clamp includes a mounting column arranged on the upper surface of the fixing column, and a clamp whose bottom end is hinged to the mounting column, the clamp is hinged to the clamp arm at its middle, and the end of the clamp arm is hinged to the mounting column.

[0012] In a preferred embodiment, the positioning block is made of stainless steel.

[0013] In a preferred embodiment, the main board is made of stainless steel, and the bottom board is made of hard copper.

[0014] The present invention has at least the following technical effects:

[0015] According to the present invention, a main board, a bottom plate arranged on the upper surface of the main board, a positioning block arranged above the bottom plate, and a crimping component are provided. Since the positioning block is configured to have a limiting opening, a notch is provided on one side of the limiting opening, and the limiting opening forms a limiting inner wall on the inner side of the notch, the EI laminate can enter the limiting opening through the notch and contact the limiting inner wall, thereby realizing the limiting effect on the EI laminate in three directions through the limiting opening of the positioning block, so that the EI laminate can be quickly aligned. At the same time, since a crimping component is provided above the limiting opening, the crimping component can be pressed against the EI laminate stacked to different heights from the upper surface of the bottom plate, thereby improving the welding uniformity and welding efficiency. In addition, the positioning block can be designed according to different product shapes, so that it can be adapted to fix EI laminates of different models and sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The overall structural diagram of the welding positioning device for transformer laminations according to the present invention is schematically shown.

[0017] In the present application, all drawings are schematic drawings, which are only used to illustrate the principles of the present invention and are not drawn according to the actual scale. DETAILED DESCRIPTION

[0018] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be understood that the terms "upper", "inner", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In the present invention, "multiple" refers to two or more.

[0020] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] like Figure 1 As shown, the welding positioning device 100 for transformer laminations of the present invention comprises: a main board 1, a bottom board 2, a positioning block 3 and a crimping component 7, the bottom board 2 is arranged on the upper surface of the main board 1, and the bottom board 2 is used to isolate the EI lamination from the main board 1 during the welding process, and weld the EI lamination and the device together. The positioning block 3 is arranged above the bottom board 2, and is configured to have a limiting opening 31, the limiting opening 31 has a notch on one side in the plane, and a limiting inner wall extending in a square is formed on the inner side of the notch, the limiting inner wall is used to limit the position of the EI lamination in three directions, and the limiting opening 31 is used to place the EI lamination on its notch side, so that the EI lamination enters the limiting opening 31 and contacts the limiting inner wall. A crimping component 7 is arranged above the limiting opening 31 to press against the upper surface of the EI lamination, and the crimping component 7 can press against the EI laminations stacked to different heights from the upper surface of the bottom board 2.

[0022] According to the present invention, a main board 1, a bottom plate 2 arranged on the upper surface of the main board 1, a positioning block 3 arranged above the bottom plate 2, and a crimping component 7 are provided. Since the positioning block 3 is configured to have a limiting opening 31, a notch is provided on one side of the limiting opening 31, and the limiting opening 31 forms a limiting inner wall on the inner side of the notch, the EI laminate can enter the limiting opening 31 through the notch and contact the limiting inner wall, thereby realizing the limiting effect of the EI laminate in three directions through the limiting opening 31 of the positioning block 3, so that the EI laminate can be quickly aligned. At the same time, since the crimping component 7 is provided above the limiting opening 31, the crimping component 7 can press against the EI laminate stacked to different heights from the upper surface of the bottom plate 2, thereby improving the welding uniformity and welding efficiency.

[0023] In addition, the welding positioning device 100 for transformer laminations described in the present invention has a simple structure, strong versatility and is easy to operate. The positioning block 3 can be designed according to different product shapes, so that it can be adapted to fix EI laminations of different models and sizes.

[0024] In one or more embodiments, the limiting opening 31 is configured in a notch shape.

[0025] In one or more embodiments, the main board 1 is made of stainless steel, and the bottom board 2 is made of T2 hard copper.

[0026] In one or more embodiments, the main board 1 and the bottom board 2 are both positioned by positioning pins (not shown), and the main board 1 and the bottom board 2 are connected by screws. Since the bottom board 2 is a consumable part, it is easy to melt or deform during welding. In order to ensure the reliability and stability of the bottom board 2, the bottom board 2 and the main board 1 are detachably connected, so as to facilitate replacement.

[0027] In one or more embodiments, the positioning block 3 is made of stainless steel.

[0028] In one or more embodiments, the welding positioning device 100 for transformer laminations of the present invention further includes: a tube column 5 disposed on the upper surface of the main board 1, and a positioning block 3 disposed on the upper surface of the tube column 5 and connected to the tube column 5 via a threaded member. By replacing the positioning block 3, the EI lamination welding of single-phase shell-type transformer products of different sizes and types can be satisfied.

[0029] In one or more embodiments, the corners of the positioning block 3 near the notch are rounded, and the edges are polished and deburred to prevent sharp parts from causing harm to operators and EI stacks.

[0030] In one or more embodiments, the welding positioning device 100 for transformer laminations described in the present invention further includes: a clamp 6 having a clamp arm 61. The clamp 6 can provide a stable and reliable continuous clamping force in the vertical direction, and can avoid dimensional changes caused by the shaking of the device during the welding process. The crimping component 7 includes: a crimping bolt 72 passing through the clamp arm 61 from bottom to top and a limiting nut 71 connected to the crimping bolt 72. By screwing the limiting nut 71, the height of the lower end face of the crimping bolt 72 from the upper surface of the positioning block 3 can be adjusted, so that the lower end face of the crimping bolt 72 can be pressed against the EI laminations stacked to different heights.

[0031] In one or more embodiments, the welding positioning device 100 for transformer laminations of the present invention further includes: a fixing column 4 disposed on the upper surface of the main board 1, and a clamp 6 disposed on the upper surface of the fixing column 4. Optionally, the clamp 6 is connected to the upper surface of the fixing column 4 through a screw. Optionally, the fixing column 4 is connected to the main board 1 through a screw.

[0032] In one or more embodiments, the clamp 6 can adopt a vertical clamp, which includes a mounting column a arranged on the upper surface of the fixed column 4, and a clamp 62 whose bottom end is hinged to the mounting column a, the clamp 62 is hinged to the clamp arm 61 in the middle, and the clamp arm 61 is hinged to the mounting column a near the end of the mounting column a.

[0033] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced by equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A welding positioning device for transformer laminations, comprising: A main board, a bottom plate arranged on the upper surface of the main board, a positioning block arranged above the bottom plate, and a crimping component, wherein the positioning block is constructed to have a limiting opening, a notch on one side of the limiting opening, the limiting opening forms a limiting inner wall on the inner side of the notch, the EI stack can enter the limiting opening through the notch and contact the limiting inner wall, the crimping component is arranged above the limiting opening, and the crimping component can press against the EI stack stacked to different heights from the upper surface of the bottom plate.

2. The welding positioning device for transformer laminations according to claim 1, characterized in that: Also includes: A clamp with a clamp arm, wherein the crimping component includes: a crimping bolt passing through the clamp arm from bottom to top and a limiting nut connected to the crimping bolt, and by screwing the limiting nut, the height of the lower end surface of the crimping bolt from the upper surface of the positioning block can be adjusted.

3. The welding positioning device for transformer laminations according to claim 1 or 2, characterized in that: Also includes: A tube column is arranged on the upper surface of the main board, and the positioning block is arranged on the upper surface of the tube column and connected with the tube column through a threaded piece.

4. The welding positioning device for transformer laminations according to claim 3, characterized in that: Also includes: A fixing column is arranged on the upper surface of the main board, and the clamp is arranged on the upper surface of the fixing column.

5. The welding positioning device for transformer laminations according to claim 4, characterized in that: The fixing column is connected to the main board via a screw.

6. The welding positioning device for transformer laminations according to claim 1, characterized in that: The corners of the positioning block near the notch are rounded, and the edges are polished to remove burrs.

7. The welding positioning device for transformer laminations according to claim 4, characterized in that: The clamp is a vertical clamp.

8. The welding positioning device for transformer laminations according to claim 7, characterized in that: The clamp comprises a mounting column arranged on the upper surface of the fixing column, and a clamp whose bottom end is hinged to the mounting column. The clamp is hinged to the clamp arm at its middle, and the end of the clamp arm is hinged to the mounting column.

9. The welding positioning device for transformer laminations according to claim 1, characterized in that: The positioning block is made of stainless steel.

10. The welding positioning device for transformer laminations according to claim 9, characterized in that: The main board is made of stainless steel, and the bottom board is made of copper.

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