Butterfly wing plate welding clamp

By designing a unified welding fixture for butterfly wing plates, the problem that existing welding fixtures for butterfly wing plate components cannot be simultaneously applied to different welding equipment has been solved. This has enabled efficient fixture installation and stable welding, thereby improving production efficiency and product quality.

CN223718681UActive Publication Date: 2025-12-26NINGBO FOTILE KITCHEN WARE CO LTD
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Patent Information

Application Number
CN202520086586.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-01-14
Publication Date
2025-12-26
Estimated Expiration
2035-01-14

AI Technical Summary

Technical Problem

The existing welding fixtures for butterfly wing plate assemblies lack a unified standard and cannot be simultaneously applied to manual line and workstation welding equipment, resulting in increased manufacturing costs, time-consuming and labor-intensive debugging, low changeover efficiency, and difficulty in ensuring product quality.

Method used

A butterfly wing plate welding fixture was designed, comprising an upper plate assembly and a lower plate assembly, each equipped with a manual line and a workstation positioning hole, and aligned by a positioning pin. This simplifies the fixture model change process and integrates the left and right upper pressure plate assemblies, providing a unified reference.

Benefits of technology

It improved work efficiency, shortened the fixture installation and debugging time, ensured product quality, and reduced manufacturing costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a butterfly wing plate welding clamp which comprises an upper plate assembly and a lower plate assembly, the upper plate assembly comprises an upper plate body and a plurality of upper pressing blocks fixedly arranged on the upper plate body, and the upper plate body is provided with a plurality of manual line upper positioning holes, a plurality of work station upper positioning holes and a plurality of upper plate positioning holes; the lower plate assembly comprises a lower plate body and a plurality of lower pressing blocks fixedly arranged on the lower plate body, the lower plate body is provided with a plurality of manual line lower positioning holes, a plurality of work station lower positioning holes and a plurality of lower plate positioning holes, and the lower plate positioning holes correspond to the upper plate positioning holes one to one; the positioning pins are used for being inserted into the upper plate positioning holes and the lower plate positioning holes so that the upper pressing blocks can be aligned with the lower pressing blocks. According to the butterfly wing plate welding fixture, through the design of the positioning pins, the upper plate positioning holes and the lower plate positioning holes, the operation of repeated debugging and trial welding when the model of the welding fixture is replaced is avoided, the fixture mounting and debugging time during model replacement is shortened, and the working efficiency is greatly improved.
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Description

TECHNICAL FIELD

[0001] The utility model relates to welding fixture technical field, in particular to a butterfly wing plate welding fixture. BACKGROUND

[0002] The butterfly wing plate assembly is an important component of the range hood, mainly used for reducing oil smoke retention time and accelerating oil smoke discharge. The butterfly wing plate assembly is usually formed by welding. At present, the welding fixture of the butterfly wing plate assembly is usually composed of left and right upper pressing plate assemblies, a lower plate assembly, etc. When using the welding fixture, the corresponding model of the welding fixture left and right upper pressing plate assemblies and the lower plate assembly need to be fixed on the base of the welding equipment first, then trial welding is carried out, and then the fixture is adjusted according to the size of the welded assembly, and then trial welding is carried out again. This is repeated until the size of the welded butterfly wing plate assembly is qualified.

[0003] Because the manual line is different from the base of the welding equipment of the workstation, the welding fixture is divided into a manual line welding fixture and a workstation welding fixture. Each butterfly wing plate product needs to be made with two sets of fixtures, i.e. the manual line welding fixture and the workstation welding fixture, which increases the additional manufacturing cost. At the same time, because the left and right upper pressing plate assemblies and the lower plate assembly are installed separately, there is a lack of unified reference, and repeated debugging is required during welding, which is time-consuming and labor-intensive, has low change efficiency, and the product quality is difficult to guarantee. SUMMARY

[0004] Therefore, it is necessary to provide a butterfly wing plate welding fixture to solve the problems of the lack of unified reference and the inability to simultaneously apply to the manual line welding equipment and the workstation welding equipment.

[0005] A butterfly wing plate welding fixture comprises:

[0006] An upper plate assembly comprises an upper plate body and a plurality of upper pressing blocks fixed to the upper plate body. The upper plate body is provided with a plurality of manual line upper positioning holes, a plurality of workstation upper positioning holes, and a plurality of upper plate positioning holes. The manual line upper positioning holes are used for positioning and installing the upper plate body on the welding equipment of the manual line. The workstation upper positioning holes are used for positioning and installing the upper plate body on the welding equipment of the workstation.

[0007] A lower plate assembly comprises a lower plate body and a plurality of lower pressing blocks fixed to the lower plate body. The lower plate body is provided with a plurality of manual line lower positioning holes, a plurality of workstation lower positioning holes, and a plurality of lower plate positioning holes. The lower plate positioning holes correspond to the upper plate positioning holes one by one. The manual line lower positioning holes are used for positioning and installing the lower plate body on the base of the manual line. The workstation lower positioning holes are used for positioning and installing the lower plate body on the base of the workstation.

[0008] A plurality of positioning pins for being inserted into the upper plate positioning holes and the lower plate positioning holes to align the upper pressing blocks with the lower pressing blocks.

[0009] In one of the embodiments, a pair of the upper pressing blocks are symmetrically arranged along the front-rear direction of the upper plate body to form a group of upper pressing block groups, and two groups of the upper pressing block groups are arranged at intervals along the front-rear direction of the upper plate body; a pair of the lower pressing blocks are symmetrically arranged along the front-rear direction of the lower plate body to form a group of lower pressing block groups, and two groups of the lower pressing block groups are arranged at intervals along the front-rear direction of the lower plate body.

[0010] In one of the embodiments, the upper pressing block has an upper pressing surface which is obliquely extended from the outer side surface of the upper pressing block to the inner side surface of the upper pressing block in a direction close to the upper plate body; and the lower pressing block has a lower pressing surface which is obliquely extended from the inner side surface of the lower pressing block to the outer side surface of the lower pressing block in a direction close to the lower plate body.

[0011] In one of the embodiments, the spacing between the upper manual line positioning holes is smaller than the spacing between the upper workstation positioning holes, and the spacing between the lower manual line positioning holes is smaller than the spacing between the lower workstation positioning holes.

[0012] In one of the embodiments, the lower plate positioning hole is located between two of the lower pressing blocks of one of the groups of the lower pressing blocks.

[0013] In one of the embodiments, the positioning pin comprises an insertion portion and a limiting portion connected to the insertion portion, the diameter of the limiting portion is larger than the diameter of the insertion portion, and the insertion portion is used for being inserted into the upper plate positioning hole and the lower plate positioning hole.

[0014] In one of the embodiments, the lower plate assembly comprises a plurality of stoppers which are respectively and at intervals fixed to the periphery of the lower plate body for limiting the butterfly plate.

[0015] In one of the embodiments, the stopper has a guide surface which is obliquely extended from the top surface of the stopper to the inner side surface of the stopper towards the lower plate body.

[0016] In one of the embodiments, the upper plate body is provided with an upper clamp plate identification, the lower plate body is provided with a lower clamp plate identification which is the same as the upper clamp plate identification, and the upper clamp plate identification and the lower clamp plate identification are used for confirming the model and the station of the butterfly plate welding jig.

[0017] In one of the embodiments, the upper clamp plate identification is located between two of the upper plate positioning holes, and the lower clamp plate identification is located between two of the upper plate positioning holes.

[0018] The butterfly wing plate welding fixture of the present application avoids the need for repeated debugging and trial welding when changing the type of welding fixture through the design of the positioning pin, the upper plate positioning hole and the lower plate positioning hole, reduces the fixture installation and debugging time when changing types, and greatly improves work efficiency. In addition, the upper plate assembly of the present application combines the original left and right upper pressing plate assemblies into one, which can also save the time for fixture installation and debugging. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 A perspective view of the butterfly wing plate welding fixture is provided for an embodiment of the present application;

[0020] Figure 2 An exploded view of the butterfly wing plate welding fixture according to the above embodiment of the present application is shown;

[0021] Figure 3 A perspective view of the butterfly wing plate welding fixture according to the above embodiment of the present application is shown when clamping the butterfly wing plate;

[0022] Figure 4 A cross-sectional view of the butterfly wing plate welding fixture according to the above embodiment of the present application is shown when clamping the butterfly wing plate;

[0023] Figure 5 A cross-sectional view of the upper plate assembly of the butterfly wing plate welding fixture according to the above embodiment of the present application is shown;

[0024] Figure 6 A cross-sectional view of the lower plate assembly of the butterfly wing plate welding fixture according to the above embodiment of the present application is shown.

[0025] Reference signs: 10, upper plate assembly; 11, upper plate body; 111, manual line upper positioning hole; 112, workstation upper positioning hole; 113, upper plate positioning hole; 114, upper clamp plate identification; 12, upper pressing block; 121, upper pressing surface; 20, lower plate assembly; 21, lower plate body; 211, manual line lower positioning hole; 212, workstation lower positioning hole; 213, lower plate positioning hole; 214, lower clamp plate identification; 22, lower pressing block; 221, lower pressing surface; 23, stop block; 231, guide surface; 30, positioning pin; 31, insertion portion; 32, limiting portion; 40, butterfly wing plate. DETAILED DESCRIPTION

[0026] In order to make the above object, characteristics and advantages of the present application more apparent, concrete embodiments of the present application will be described in detail with reference to the drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different manners without departing from the spirit of the present application. Those skilled in the art will appreciate the scope of the present application and can make similar modifications without departing from the spirit of the present application. Therefore, the present application is not limited by the embodiments disclosed below.

[0027] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0028] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0029] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0030] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can be the first and second features directly contact, or the first and second features indirectly contact through intermediate media. Moreover, the first feature is "on", "above" and "on" the second feature can be the first feature is directly above or obliquely above the second feature, or just indicates that the first feature is higher than the second feature in horizontal height. The first feature is "under", "below" and "under" the second feature can be the first feature is directly below or obliquely below the second feature, or just indicates that the first feature is less than the second feature in horizontal height.

[0031] It should be noted that when an element is referred to as being "fixed" or "set" on another element, it can be directly on the other element or there can be an intermediate element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be an intermediate element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation.

[0032] Based on the problems of lack of unified reference and inability to simultaneously apply manual wire welding equipment and workstation welding equipment existing in the current existing butterfly wing plate assembly welding fixture, the butterfly wing plate welding fixture is provided. The butterfly wing plate welding fixture can simultaneously meet the use requirements of manual wire and workstation, can reduce the installation and debugging time of the fixture when changing type, and improve the work efficiency, and guarantee the product quality.

[0033] Specifically, please refer to Figure 1 and Figure 2The butterfly wing plate welding fixture comprises an upper plate assembly 10, a lower plate assembly 20 and a plurality of positioning pins 30. The upper plate assembly 10 comprises an upper plate body 11 and a plurality of upper pressing blocks 12 fixedly arranged on the upper plate body 11. The upper plate body 11 is provided with a plurality of manual line upper positioning holes 111, a plurality of workstation upper positioning holes 112 and a plurality of upper plate positioning holes 113. The manual line upper positioning holes 111 are used for positioning and mounting the upper plate body 11 on the welding equipment of the manual line. The workstation upper positioning holes 112 are used for positioning and mounting the upper plate body 11 on the welding equipment of the workstation. The lower plate assembly 20 comprises a lower plate body 21 and a plurality of lower pressing blocks 22 fixedly arranged on the lower plate body 21. The lower plate body 21 is provided with a plurality of manual line lower positioning holes 211, a plurality of workstation lower positioning holes 212 and a plurality of lower plate positioning holes 213 corresponding to the upper plate positioning holes 113. The manual line lower positioning holes 211 are used for positioning and mounting the lower plate body 21 on the base of the manual line. The workstation lower positioning holes 212 are used for positioning and mounting the lower plate body 21 on the base of the workstation. The positioning pins 30 are used for being inserted into the upper plate positioning holes 113 and the lower plate positioning holes 213 to align the upper pressing blocks 12 and the lower pressing blocks 22.

[0034] It can be understood that the upper plate body 11 of the butterfly wing plate welding fixture is simultaneously provided with the manual line upper positioning holes 111 and the workstation upper positioning holes 112, and the lower plate body 21 is simultaneously provided with the manual line lower positioning holes 211 and the workstation lower positioning holes 212, so that the butterfly wing plate welding fixture can simultaneously meet the use requirements of the manual line and the workstation. When the butterfly wing plate welding fixture is mounted on the manual line or the workstation, the lower plate assembly 20 can be first positioned and mounted on the base through the manual line lower positioning holes 211 or the workstation lower positioning holes 212, then the upper plate assembly 10 is placed on the lower plate assembly 20, the upper plate assembly 10 and the lower plate assembly 20 are aligned through the cooperation of the positioning pins 30, the upper plate positioning holes 113 and the lower plate positioning holes 213, finally the welding equipment is pressed down, the upper plate assembly 10 is positioned and mounted on the welding equipment through the manual line upper positioning holes 111 or the workstation upper positioning holes 112, and the positioning pins 30 are removed, so that the type changing work of the fixture is completed. In this way, through the design of the positioning pins 30, the upper plate positioning holes 113 and the lower plate positioning holes 213, the repeated debugging and trial welding operations when the type of the welding fixture is changed are avoided, the fixture mounting and debugging time when the type is changed is reduced, and the work efficiency is greatly improved. In addition, the upper plate assembly 10 of the present application combines the original left and right upper pressing block assemblies into one, which can also save the fixture mounting and debugging time.

[0035] More specifically, as Figure 2 , Figure 5 and Figure 6As shown, in one of the embodiments, a pair of the upper pressing blocks 12 are symmetrically arranged along the front-rear direction of the upper plate body 11 to form a group of upper pressing blocks 12, and two groups of the upper pressing blocks 12 are arranged along the front-rear direction of the upper plate body 11. In other words, the upper plate assembly 10 includes two groups of upper pressing blocks 12, one group of the upper pressing blocks 12 includes a pair of upper pressing blocks 12 symmetrically arranged along the front-rear direction of the upper plate body 11, and the group of upper pressing blocks 12 is arranged along the front-rear direction of the upper plate body 11. Similarly, a pair of the lower pressing blocks 22 are symmetrically arranged along the front-rear direction of the lower plate body 21 to form a group of lower pressing blocks 22, and two groups of the lower pressing blocks 22 are arranged along the front-rear direction of the lower plate body 21. In this way, the arrangement of the upper pressing blocks 12 and the lower pressing blocks 22 is more in line with the symmetrical structure of the butterfly wing plate 40, so that the upper pressing blocks 12 and the lower pressing blocks 22 can press the butterfly wing plate 40 at multiple positions to more stably clamp the butterfly wing plate 40.

[0036] Preferably, as shown in Figure 3 and Figure 4 In one of the embodiments, the upper pressing block 12 has an upper pressing surface 121 inclinedly extending from the outer side surface of the upper pressing block 12 to the inner side surface of the upper pressing block 12 in a direction close to the upper plate body 11, and the lower pressing block 22 has a lower pressing surface 221 inclinedly extending from the inner side surface of the lower pressing block 22 to the outer side surface of the lower pressing block 22 in a direction close to the lower plate body 21. When the butterfly wing plate welding clamp clamps the butterfly wing plate 40, the upper pressing surface 121 can be in close contact with the upper surface of the butterfly wing plate 40, and the lower pressing surface 221 can be in close contact with the lower surface of the butterfly wing plate 40, so that the butterfly wing plate 40 can be more stably clamped during welding to ensure the welding quality of the butterfly wing plate 40.

[0037] Optionally, as shown in Figure 2 In one of the embodiments, the distance between the manual line positioning holes 111 is smaller than the distance between the workstation positioning holes 112, and the distance between the manual line lower positioning holes 211 is smaller than the distance between the workstation lower positioning holes 212. In this way, the manual line positioning holes 111 and the workstation positioning holes 112 and the manual line lower positioning holes 211 and the workstation lower positioning holes 212 can be distinguished, thereby reducing the installation time during model change.

[0038] Exemplarily, as shown in Figure 2 The workstation positioning holes 112 are located between two groups of the upper pressing blocks 12, and the manual line positioning holes 111 are located between two workstation positioning holes; the manual line lower positioning holes 211 are located between two lower pressing blocks 22 of one group of the lower pressing blocks 22, and the workstation lower positioning holes 212 are arranged between two groups of the lower pressing blocks 22.

[0039] Optionally, as shown in Figure 2 and Figure 3 In one embodiment, the positioning pin 30 comprises an insertion part 31 and a limiting part 32 connected to the insertion part 31, the diameter of the limiting part 32 is larger than that of the insertion part 31, and the insertion part 31 is used to insert into the upper plate positioning hole 113 and the lower plate positioning hole 213. In other words, after the upper plate assembly 10 is placed on the lower plate assembly 20, the insertion part 31 is inserted into the upper plate positioning hole 113, and then the insertion part 31 is inserted into the lower plate positioning hole 213, so that the limiting part 32 abuts against the upper plate body 11, thereby aligning the upper plate assembly 10 and the lower plate assembly 20.

[0040] Further, as shown in Figure 2 , Figure 3 and Figure 6 In one embodiment, the lower clamping plate assembly comprises a plurality of stoppers 23, which are respectively and spacedly fixed to the periphery of the lower plate body 21, and are used to limit the butterfly plate 40. When the butterfly plate welding jig is used, the stoppers 23 can respectively limit the four edges of the butterfly plate 40, so that the butterfly plate welding jig can clamp the butterfly plate 40 more stably, thereby ensuring the stability of the butterfly plate 40 during welding and improving the welding quality of the butterfly plate 40.

[0041] Exemplarily, as shown in Figure 6 In one embodiment, at least two stoppers 23 are arranged on each edge of the lower plate body 21.

[0042] Preferably, as shown in Figure 6 In one embodiment, the stopper 23 has a guide surface 231, which extends obliquely from the top surface of the stopper 23 to the inner side surface of the stopper 23. The guide surface 231 can play a guiding role, and when the butterfly plate 40 is placed, the butterfly plate 40 can be slid along the guide surface 231 between the stoppers 23, thereby quickly loading the butterfly plate 40 into the lower plate assembly 20 and saving welding time.

[0043] Particularly, as shown in Figure 2 In one embodiment, the upper plate body 11 is provided with an upper clamping plate mark 114, and the lower plate body 21 is provided with a lower clamping plate mark 214 identical to the upper clamping plate mark 114, and the upper clamping plate mark 114 and the lower clamping plate mark 214 are used to identify the model and station of the butterfly plate welding jig. In this way, the butterfly plate welding jig can be distinguished by the marks, and when the butterfly plate 40 is changed, the butterfly plate welding jig and the corresponding station can be quickly matched, thereby saving the changeover time.

[0044] Preferably, as shown in Figure 2As shown, in one of the embodiments, the upper clamp plate mark 114 is located between two upper plate positioning holes 113, and the lower clamp plate mark 214 is located between two upper plate positioning holes 113. In this way, the upper clamp plate mark 114 and the lower clamp plate mark 214 are located on the same side as the upper plate positioning hole 113 and the lower plate positioning hole 213, so that the upper clamp plate mark 114 and the lower clamp plate mark 214 can be more intuitively observed during assembly, avoiding the problem of misassembly.

[0045] The technical features of the above-described embodiments can be combined in any manner. For the sake of brevity, not all possible combinations of the technical features in the above-described embodiments are described, but it should be understood that any combination of the technical features is within the scope of the present disclosure as long as the combination does not result in contradictions.

[0046] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the present application. It should be noted that, for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A butterfly plate welding fixture, characterized by, The application relates to a butterfly wing plate welding jig. The upper plate assembly comprises an upper plate body and a plurality of upper pressing blocks fixed to the upper plate body, the upper plate body is provided with a plurality of upper hand line positioning holes, a plurality of upper workstation positioning holes and a plurality of upper plate positioning holes, the upper hand line positioning holes are used for positioning and mounting the upper plate body on a welding device of a hand line, the upper workstation positioning holes are used for positioning and mounting the upper plate body on a welding device of a workstation; The lower plate assembly comprises a lower plate body and a plurality of lower pressing blocks fixed to the lower plate body, the lower plate body is provided with a plurality of lower hand line positioning holes, a plurality of lower workstation positioning holes and a plurality of lower plate positioning holes, the lower plate positioning holes correspond to the upper plate positioning holes one by one, the lower hand line positioning holes are used for positioning and mounting the lower plate body on a base of the hand line, and the lower workstation positioning holes are used for positioning and mounting the lower plate body on a base of the workstation. A plurality of positioning pins are used for being inserted into the upper plate positioning holes and the lower plate positioning holes so that the upper pressing blocks are aligned with the lower pressing blocks. A pair of the upper pressing blocks are symmetrically arranged on the upper plate body along the front-rear direction of the upper plate body to form a group of upper pressing block groups, and two groups of the upper pressing block groups are arranged on the upper plate body at intervals along the front-rear direction of the upper plate body.

2. The butterfly plate welding fixture of claim 1, wherein A pair of the lower pressing blocks are symmetrically arranged on the lower plate body along the front-rear direction of the lower plate body to form a group of lower pressing block groups, and two groups of the lower pressing block groups are arranged on the lower plate body at intervals along the front-rear direction of the lower plate body. The upper pressing block has an upper pressing surface which is obliquely extended from the outer side surface of the upper pressing block to the inner side surface of the upper pressing block in the direction close to the upper plate body; and the lower pressing block has a lower pressing surface which is obliquely extended from the inner side surface of the lower pressing block to the outer side surface of the lower pressing block in the direction close to the lower plate body.

3. The butterfly plate welding fixture of claim 2, wherein, The interval between the upper hand line positioning holes is smaller than the interval between the upper workstation positioning holes, and the interval between the lower hand line positioning holes is smaller than the interval between the lower workstation positioning holes.

4. The butterfly plate welding fixture of claim 2, wherein, The lower plate positioning holes are located between two lower pressing blocks of one group of the lower pressing block groups.

5. The butterfly plate welding fixture of claim 2, wherein, The positioning pin comprises an insertion part and a limiting part connected to the insertion part, the diameter of the limiting part is larger than the diameter of the insertion part, and the insertion part is used for being inserted into the upper plate positioning holes and the lower plate positioning holes.

6. The butterfly plate welding fixture according to any one of claims 1 to 5, wherein The lower plate assembly comprises a plurality of stop blocks which are respectively fixed to the periphery of the lower plate body at intervals and are used for limiting the butterfly wing plate.

7. The butterfly plate welding fixture according to any one of claims 1 to 5, wherein The stop block has a guide surface which is obliquely extended from the top surface of the stop block to the inner side surface of the stop block towards the lower plate body.

8. The butterfly plate welding fixture of claim 7, wherein, The upper plate body is provided with an upper clamp plate mark, the lower plate body is provided with a lower clamp plate mark which is the same as the upper clamp plate mark, and the upper clamp plate mark and the lower clamp plate mark are used for confirming the model and the station of the butterfly wing plate welding jig.

9. The butterfly plate welding fixture according to any one of claims 1 to 5, wherein The upper clamp plate mark is located between two upper plate positioning holes, and the lower clamp plate mark is located between two upper plate positioning holes.

10. The butterfly plate welding fixture of claim 9, wherein, ​