A positioning device for stove burner shell welding

Abstract

The application discloses a positioning device for stove burner shell welding, and relates to the technical field of stove burner shell processing, which comprises a base and a burner shell seat, the surface of the burner shell seat is welded with an air inlet pipe and an air inlet pipe, the air inlet pipe and the air inlet pipe are fixedly connected, and the positioning device further comprises: positioning structures arranged on the upper surface of the base and used for clamping and fixing the burner shell seat, the air inlet pipe and the air inlet pipe respectively; a lock catch structure arranged above the base and used for driving the positioning structures to be flexibly used; and an auxiliary structure arranged on the other side of the positioning structure and used for assisting in welding some small structure pipes, such as air injection pipes, on the inner side of the burner shell seat, the positioning structure is arranged, the close positioning and abutting work between the air inlet pipe, the air inlet pipe and the burner shell seat is facilitated, and the stability of subsequent welding between the burner shells is improved to a certain extent.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of stove burner shell processing, in particular to a positioning device for stove burner shell welding. BACKGROUND

[0002] Stove burner shell welding is a key process for fixing the core components (such as ejector, pipeline, burner head, etc.) of the burner into a complete shell through welding process. This process needs to ensure accurate positioning of each component (such as centering of the ejector and the burner head, and flushness of the pipeline and the ejector end face) to ensure the installation accuracy and sealing of the burner.

[0003] A positioning device for stove burner shell welding is disclosed in a Chinese patent with publication number CN109531018B, which includes a bottom plate, a top adjusting frame, and a side adjusting frame. The top adjusting frame includes a locking device and a clamping centering device. The clamping centering device includes a clamping device, a centering device, and a fixing device. The clamping device is provided with two groups, which are reversely arranged on both sides of the fixing device. The clamping device includes a first air cylinder, a connecting rod, and a clamping arm. The first air cylinder is fixedly connected with the connecting rod. The ejector, pipeline, and burner head of the burner can be fixed respectively, and the welding operation between the three can have greater reliability, ensuring complete sealing of the burner shell welding and achieving greater reliability and economy.

[0004] The existing related technology often has the following defects: during the process of fixing the stove burner shell before welding, the burner shell seat is often fixed, and then the air inlet pipe and the air inlet pipe are controlled by artificial holding to realize the control of the air inlet pipe and the air inlet pipe. This process not only reduces the stability of the air inlet pipe and the air inlet pipe during the welding process, but also increases the error of the air inlet pipe and the air inlet pipe installed on the burner shell seat during the welding process, thereby reducing the efficiency of the welding process of the burner shell.

[0005] Therefore, we propose a positioning device for stove burner shell welding. SUMMARY

[0006] The purpose of the present application is to provide a positioning device for stove burner shell welding to solve the problems raised in the background art.

[0007] In order to achieve the above object, the present application provides the following technical scheme: a positioning device for welding of a stove burner shell, comprising a base and a burner shell seat, a gas inlet pipe and an air inlet pipe are welded on the surface of the burner shell seat, the gas inlet pipe and the air inlet pipe are fixedly connected, further comprising: positioning structures arranged on the upper surface of the base and used for clamping and fixing the burner shell seat and the gas inlet pipe and the air inlet pipe respectively; a lock structure arranged above the base and used for driving the positioning structure to be used flexibly; and an auxiliary structure arranged on the other side of the positioning structure and used for assisting the welding of small structure pipes such as the gas injection pipe inside the burner shell seat.

[0008] The above components achieve the following effects: the positioning structure facilitates the close positioning and abutting work between the gas inlet pipe, the air inlet pipe and the burner shell seat, and improves the stability of the subsequent welding between the burner shells; the lock structure facilitates the exposure of the outer side of the burner to be welded as much as possible through the rotating and locking work of the positioning frame, and facilitates the overall welding work of the welding part of the burner shell; the auxiliary structure facilitates the flexible clamping and positioning work of the small structure pipes such as the gas injection pipe inside the burner shell seat, and facilitates the welding work between the small structure pipes such as the gas injection pipe inside the burner shell seat and the burner shell seat, thereby further improving the use performance of the stove burner shell welding positioning device.

[0009] Preferably, the positioning structure comprises two sliding grooves opened in the surface of the base, two clamping blocks are slidably connected to the inner side of the sliding grooves, a V-shaped notch is opened on one side of each of the two clamping blocks, a first bidirectional screw rod is rotatably connected to the inside of the base, opposite threads are opened on the two sides of the first bidirectional screw rod, the first bidirectional screw rod is threadedly connected to the inside of the clamping block, a rotating pin is fixedly connected to the upper surface of the base, a positioning frame is rotatably connected to the upper side of the rotating pin, a limiting groove is opened on the upper side of the positioning frame, a sliding block is slidably connected to the inside of the limiting groove, a T-shaped frame is slidably connected to the inside of the sliding block, two positioning blocks are slidably connected to the inside of the T-shaped frame, and a second bidirectional screw rod is rotatably connected to the inside of the T-shaped frame.

[0010] The above components achieve the following effects: the first bidirectional screw rod is rotated, the two clamping blocks are driven to move towards each other along the sliding grooves in the base by the opposite threads at the two ends of the first bidirectional screw rod, the V-shaped notch on the clamping block clamps the bottom of the burner shell seat, the burner shell seat is fixed in the horizontal direction, the gas inlet pipe and the air inlet pipe are placed between the two positioning blocks, and the second bidirectional screw rod is rotated, the two positioning blocks are driven to move towards each other through the sliding channel in the inside of the T-shaped frame by the opposite threads of the second bidirectional screw rod.

[0011] Preferably, the two positioning blocks are provided with V-shaped notches on the side close to each other.

[0012] The effect of the above-mentioned components is that the V-shaped notches of the positioning blocks clamp the air inlet pipe and the air inlet pipe, realizing the positioning and clamping of the air inlet pipe and the air inlet pipe.

[0013] Preferably, the inside of the sliding block is threadedly connected with a driving rod, and the driving rod is rotationally connected with the inside of the T-shaped frame.

[0014] The effect of the above-mentioned components is that rotating the driving rod pushes the T-shaped frame to move.

[0015] Preferably, the lock structure comprises a support block fixedly connected to the upper surface of the base, and a plug rod slidably connected to the inside of the support block, and the surface of the positioning frame is provided with a plug hole, and the size of the plug hole is matched with the size of the plug rod.

[0016] The effect of the above-mentioned components is that the plug rod is inserted into the plug hole on the surface of the positioning frame, which can realize the locking of the positioning frame after rotation.

[0017] Preferably, the side wall of the plug rod is fixedly connected with a stop block, and the end side of the plug rod is fixedly connected with a pull block.

[0018] The effect of the above-mentioned components is that the stop block and the pull block are arranged to avoid the plug rod from slipping out of the inside of the support block.

[0019] Preferably, the surface of the plug rod is sleeved with a spring, and the two ends of the spring are fixedly connected with the stop block and the support block, respectively.

[0020] The effect of the above-mentioned components is that the spring pushes the plug rod to be inserted into the plug hole on the surface of the positioning frame.

[0021] Preferably, the auxiliary structure comprises two sliding rods slidably connected to the inside of the positioning frame, and the other end of the two sliding rods is fixedly connected with a rectangular frame, and the inner side of the rectangular frame is slidably connected with a moving block, and the inside of the moving block is slidably connected with two rectangular strips, and the lower end of the two rectangular strips is fixedly connected with a U-shaped frame, and the inside of the U-shaped frame is slidably connected with two draw strips, and the end close to each other of the two draw strips is fixedly connected with a clamping plate, and the inside of the U-shaped frame is threadedly connected with a second screw rod, and the inside of the second screw rod is rotationally connected with the clamping plate.

[0022] The effect of the above-mentioned components is that rotating the second screw rod pushes the two clamping plates to move towards each other along the draw strips in the U-shaped frame through the rotational connection of the screw rod and the clamping plate.

[0023] Preferably, the inside of the moving block is threadedly connected with a first screw rod, and the inside of the U-shaped frame is rotationally connected with the first screw rod.

[0024] The effect achieved by the above-mentioned components is that the first screw rod drives the moving block to slide in the rectangular frame, and the U-shaped frame is adjusted to the position of the small structure pipeline such as the gas injection pipe inside the burner shell.

[0025] Preferably, the surface of the clamping plate is provided with a V-shaped notch.

[0026] The effect achieved by the above-mentioned components is that the V-shaped notch of the clamping plate clamps the small pipeline, ensuring its stability during welding.

[0027] Compared with the prior art, the present application has the following beneficial effects:

[0028] 1. The present application sets the positioning structure, which facilitates the close positioning and abutting work between the air inlet pipe, the air inlet pipe and the burner shell, and improves the stability of the subsequent welding between the burner shells.

[0029] 2. The present application sets the locking structure, which can expose the welding part outside the burner as much as possible through the rotating and locking work of the positioning frame, and facilitates the overall welding work of the welding part of the burner shell.

[0030] 3. The present application sets the auxiliary structure, which facilitates the flexible clamping and positioning work of the small structure pipeline such as the gas injection pipe inside the burner shell, facilitates the welding work between the small structure pipeline such as the gas injection pipe inside the burner shell and the burner shell, and further improves the use performance of the stove burner shell welding positioning device. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0032] Figure 2 It is another angle structure schematic diagram of the present application;

[0033] Figure 3 It is a partial structure schematic diagram of the present application; Figure 2

[0034] It is a structure schematic diagram of the T-shaped frame in the present application; Figure 4

[0035] It is an enlarged view of A in the present application; Figure 5 Figure 2 It is an enlarged view of B in the present application;

[0036] Figure 6 Figure 1 It is an enlarged view of B in the present application;

[0037] Figure 7 It is a structure schematic diagram of the auxiliary structure in the present application;

[0038] Figure 8 ​​The enlarged view of C in the Figure 7

[0039] In the figure: 1, base; 2, burner shell seat; 3, air inlet pipe; 4, air inlet pipe; 5, positioning structure; 501, positioning frame; 502, clamping block; 503, sliding groove; 504, first bidirectional screw rod; 505, T-shaped frame; 506, positioning block; 507, second bidirectional screw rod; 508, sliding block; 509, driving rod; 510, limiting groove; 511, rotating pin; 6, locking structure; 61, support block; 62, insertion rod; 63, stop block; 64, spring; 65, insertion hole; 66, pull block; 7, auxiliary structure; 71, sliding bar; 72, rectangular frame; 73, moving block; 74, first screw; 75, rectangular bar; 76, U-shaped frame; 77, second screw; 78, pull-out bar; 79, clamping plate. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0041] Please refer to Figures 1-8 The present application provides a technical solution: a positioning device for welding the outer shell of a stove burner, comprising a base 1 and a burner shell seat 2, the surface of the burner shell seat 2 is welded with an air inlet pipe 3 and an air inlet pipe 4, the air inlet pipe 3 and the air inlet pipe 4 are fixedly connected, further comprising:

[0042] The positioning structure 5 is arranged on the upper surface of the base 1 and is used to clamp and fix the burner shell seat 2, the air inlet pipe 3 and the air inlet pipe 4 respectively;

[0043] The locking structure 6 is arranged above the base 1 and is used to drive the positioning structure 5 to be used flexibly;

[0044] ​The auxiliary structure 7 is arranged on the other side of the positioning structure 5, and is used to assist in welding of some small structure pipelines such as jet pipes in the inner side of the burner shell base 2. By arranging the positioning structure 5, the close positioning and abutting work between the air inlet pipe 3, the air inlet pipe 4 and the burner shell base 2 is facilitated, and the stability of the subsequent welding between the burner shells is improved to a certain extent. By arranging the locking structure 6, the work of exposing the outer side of the burner to be welded as much as possible is facilitated through the rotating and locking work of the positioning frame 501, the comprehensive welding work of the welding position of the burner shell is facilitated, by arranging the auxiliary structure 7, the flexible clamping and positioning work of the small structure pipelines such as jet pipes in the inner side of the burner shell base 2 is facilitated, the welding work between the small structure pipelines such as jet pipes in the inner side of the burner shell base 2 and the burner shell base 2 is facilitated, and the use performance of the stove burner shell welding positioning device is further improved.

[0045] The specific arrangement and role of the positioning structure 5, the locking structure 6 and the auxiliary structure 7 will be described below.

[0046] As Figures 1-5As shown, the positioning structure 5 includes two grooves 503 opened on the surface of the base 1, the inner side of the groove 503 is slidably connected with two clamping blocks 502, the side close to each other of the two clamping blocks 502 is provided with a V-shaped notch, the inside of the base 1 is rotatably connected with a first bidirectional screw rod 504, the two sides of the first bidirectional screw rod 504 are provided with opposite threads, the first bidirectional screw rod 504 is threadedly connected with the inner side of the clamping block 502, the upper surface of the base 1 is fixedly connected with a rotating pin 511, the upper side of the rotating pin 511 is rotatably connected with a positioning frame 501, the upper side of the positioning frame 501 is provided with a limiting groove 510, the inner side of the limiting groove 510 is slidably connected with a sliding block 508, the inside of the sliding block 508 is slidably connected with a T-shaped frame 505, the inner side of the T-shaped frame 505 is slidably connected with two positioning blocks 506, the inside of the T-shaped frame 505 is rotatably connected with a second bidirectional screw rod 507, the two sides of the second bidirectional screw rod 507 are provided with opposite threads, the second bidirectional screw rod 507 is threadedly connected with the inside of the positioning block 506. Rotate the first bidirectional screw rod 504, drive the two clamping blocks 502 to move towards each other along the groove 503 inside the base 1 by the opposite threads at both ends thereof, clamp the bottom of the burner shell 2 through the V-shaped notch on the clamping block 502, realize the fixation of the burner shell 2 in the horizontal direction, then place the air inlet pipe 3 and the air inlet pipe 4 at the position between the two positioning blocks 506, rotate the second bidirectional screw rod 507, drive the two positioning blocks 506 to move towards each other through the inner slide of the T-shaped frame 505 by the opposite threads thereof. The side close to each other of the two positioning blocks 506 is provided with a V-shaped notch. Clamp the air inlet pipe 3 and the air inlet pipe 4 through the V-shaped notch of the positioning block 506, realize the positioning and clamping work of the air inlet pipe 3 and the air inlet pipe 4. The inside of the sliding block 508 is threadedly connected with a driving rod 509, the driving rod 509 is rotatably connected with the inside of the T-shaped frame 505. Rotate the driving rod 509, the driving rod 509 will push the T-shaped frame 505 to move.

[0047] As shown in Figures 1-2 and Figure 5 , the lock structure 6 includes a support block 61 fixedly connected to the upper surface of the base 1, the inside of the support block 61 is slidably connected with a plug rod 62, the surface of the positioning frame 501 is provided with a plug hole 65, the size of the plug hole 65 is matched with the size of the plug rod 62. Insert the plug rod 62 into the plug hole 65 on the surface of the positioning frame 501, which can realize the locking work of the positioning frame 501 after rotation. The side wall of the plug rod 62 is fixedly connected with a stop block 63, the end side of the plug rod 62 is fixedly connected with a pull block 66. The arrangement of the stop block 63 and the pull block 66 avoids the plug rod 62 from slipping out of the inside of the support block 61. The surface of the plug rod 62 is sleeved with a spring 64, the two ends of the spring 64 are respectively fixedly connected with the stop block 63 and the support block 61. The spring 64 pushes the plug rod 62 to insert into the plug hole 65 on the surface of the positioning frame 501.

[0048] As shown in Figures 1-2 and Figure 7 , andFigure 8 As shown, the auxiliary structure 7 comprises two sliding bars 71 slidingly connected inside the positioning frame 501, the other end of the two sliding bars 71 is fixedly connected with a rectangular frame 72, the inner side of the rectangular frame 72 is slidingly connected with a moving block 73, the inside of the moving block 73 is slidingly connected with two rectangular bars 75, the lower end of the two rectangular bars 75 is fixedly connected with a U-shaped frame 76, the inside of the U-shaped frame 76 is slidingly connected with two pull-out bars 78, the end close to each other of the two pull-out bars 78 is fixedly connected with a clamping plate 79, the inside of the U-shaped frame 76 is threadedly connected with a second screw rod 77, and the inside of the second screw rod 77 and the clamping plate 79 is rotationally connected. Rotate the second screw rod 77, push the two clamping plates 79 to move towards each other along the pull-out bars 78 in the U-shaped frame 76 through the rotational connection between the screw rod and the clamping plate 79. The inside of the moving block 73 is threadedly connected with a first screw rod 74, and the inside of the first screw rod 74 and the U-shaped frame 76 is rotationally connected. Rotate the first screw rod 74 to drive the moving block 73 to slide in the rectangular frame 72, adjust the position of the U-shaped frame 76 to the small structure pipeline such as the gas injection pipe on the inner side of the burner shell seat 2. The surface of the clamping plate 79 is provided with a V-shaped notch. The V-shaped notch of the clamping plate 79 clamps the small pipeline to ensure its stability during welding.

[0049] Working principle: first place the burner shell seat 2 between the two clamping blocks 502, rotate the first bidirectional screw rod 504, and drive the two clamping blocks 502 to move towards each other along the sliding groove 503 on the inner side of the base 1 through the reverse threads at both ends, clamp the bottom of the burner shell seat 2 through the V-shaped notch on the clamping block 502, realize the horizontal fixation of the burner shell seat 2, then place the air inlet pipe 3 and the air inlet pipe 4 between the two positioning blocks 506, rotate the second bidirectional screw rod 507, drive the two positioning blocks 506 to move towards each other through the reverse threads on the inner side of the T-shaped frame 505, clamp the air inlet pipe 3 and the air inlet pipe 4 through the V-shaped notch of the positioning block 506, realize the positioning and clamping work of the air inlet pipe 3 and the air inlet pipe 4, push the sliding block 508 to slide in the limiting groove 510 of the positioning frame 501, adjust the T-shaped frame 505 to the appropriate position, move the air inlet pipe 3 and the air inlet pipe 4 to the corresponding installation position of the burner shell seat 2, then rotate the driving rod 509, the driving rod 509 will push the T-shaped frame 505 to move, until the port position of the air inlet pipe 3 and the air inlet pipe 4 tightly abuts above the burner shell seat 2, then realize the positioning and clamping work between the burner shell seat 2 and the air inlet pipe 3, the air inlet pipe 4, which facilitates the subsequent welding butt joint work between the burner shell seat 2 and the air inlet pipe 3, the air inlet pipe 4. Through the setting of the positioning structure 5, it is convenient for the close positioning and abutting work between the air inlet pipe 3, the air inlet pipe 4 and the burner shell seat 2, which improves the stability of the subsequent welding between the burner shells to a certain extent.

[0050] When the positioning frame 501 is adjusted to the target angle, the spring 64 pushes the insertion rod 62 to insert into the insertion hole 65 on the surface of the positioning frame 501. Through the limiting action of the stop block 63 and the supporting block 61, the rotating state of the positioning frame 501 is locked to prevent displacement during the welding process. Pulling the pull block 66 drives the insertion rod 62 to disengage from the insertion hole 65, so that the positioning frame 501 can be flexibly rotated. After the preliminary welding work between the burner shell is completed, the positioning frame 501 and the Y-shaped frame and other structures above it can be turned out to the other side of the base 1, which facilitates the exposure of the welding area on the outer side of the burner as much as possible, and facilitates the comprehensive welding work of the welding area of the burner shell. By setting the lock structure 6, the welding area on the outer side of the burner can be exposed as much as possible through the rotating and locking work of the positioning frame 501, which facilitates the comprehensive welding work of the welding area of the burner shell.

[0051] When it is necessary to perform welding work on small structure pipelines such as the jet pipe inside the burner shell base 2, the small structure pipelines such as the jet pipe inside the burner shell base 2 are placed between the two clamping plates 79. The second screw 77 is rotated to drive the two clamping plates 79 to move towards each other along the draw strip 78 inside the U-shaped frame 76 through the rotating connection between the screw and the clamping plate 79. The small pipelines are clamped by the V-shaped notch of the clamping plate 79 to ensure their stability during welding. The position of the pipelines of different specifications is adapted. Then the first screw 74 is rotated to drive the moving block 73 to slide in the rectangular frame 72 to adjust the position of the U-shaped frame 76 to the small structure pipelines such as the jet pipe inside the burner shell base 2. The rectangular strip 75 can slide in the moving block 73 to assist in adjusting the vertical height of the U-shaped frame 76. The moving block 73 inside the rectangular frame 72 can be slid to adjust the installation position of the small structure pipelines such as the jet pipe inside the burner shell base 2. At this time, the positioning and abutting work of the small structure pipelines such as the jet pipe inside the burner shell base 2 can be realized, which facilitates the subsequent welding work of the small structure pipelines such as the jet pipe inside the burner shell base 2. By setting the auxiliary structure 7, the flexible clamping and positioning work of the small structure pipelines such as the jet pipe inside the burner shell base 2 is facilitated, which facilitates the welding work between the small structure pipelines such as the jet pipe inside the burner shell base 2 and the burner shell base 2, and further improves the use performance of the stove burner shell welding and positioning device.

[0052] It should be noted that in this text, relational terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0053] While embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and variations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A positioning device for the welding of a cooktop burner housing, comprising a base (1) and a burner housing seat (2), characterized in that: The surface of the burner shell base (2) is welded with an air inlet pipe (3) and an air inlet pipe (4), the air inlet pipe (3) and the air inlet pipe (4) are fixedly connected, further comprising: The upper surface of the base (1) is provided with positioning structures (5) for clamping and fixing the burner shell base (2) and the air inlet pipe (3) and the air inlet pipe (4) respectively; The locking structure (6) is arranged above the base (1) to drive the flexible use of the positioning structure (5); The auxiliary structure (7) is arranged on the other side of the positioning structure (5) to assist in welding some small structure pipelines of the air injection pipe inside the burner shell base (2); The positioning structure (5) comprises two sliding grooves (503) formed in the surface of the base (1), the inner side of the sliding groove (503) is slidably connected with a clamping block (502), the side close to each other of the two clamping blocks (502) is provided with a V-shaped notch, the inside of the base (1) is rotatably connected with a first bidirectional screw rod (504), the two sides of the first bidirectional screw rod (504) are provided with threads in opposite directions, the inside of the first bidirectional screw rod (504) and the clamping block (502) are threadedly connected, the upper surface of the base (1) is fixedly connected with a rotating pin (511), the upper side of the rotating pin (511) is rotatably connected with a positioning frame (501), the upper side of the positioning frame (501) is provided with a limiting groove (510), the inner side of the limiting groove (510) is slidably connected with a sliding block (508), the inside of the sliding block (508) is slidably connected with a T-shaped frame (505), the inner side of the T-shaped frame (505) is slidably connected with two positioning blocks (506), the inside of the T-shaped frame (505) is rotatably connected with a second bidirectional screw rod (507), the two sides of the second bidirectional screw rod (507) are provided with threads in opposite directions, the inside of the second bidirectional screw rod (507) and the positioning block (506) are threadedly connected; The auxiliary structure (7) comprises two sliding strips (71) slidably connected in the inside of the positioning frame (501), the other end of the two sliding strips (71) is fixedly connected with a rectangular frame (72), the inner side of the rectangular frame (72) is slidably connected with a moving block (73), the inside of the moving block (73) is slidably connected with two rectangular strips (75), the lower end of the two rectangular strips (75) is fixedly connected with a U-shaped frame (76), the inside of the U-shaped frame (76) is slidably connected with two draw strips (78), the end close to each other of the two draw strips (78) is fixedly connected with a clamping plate (79), the inside of the U-shaped frame (76) is threadedly connected with a second screw rod (77), the inside of the second screw rod (77) and the clamping plate (79) is rotatably connected.

2. A positioning device for welding a cooktop burner housing according to claim 1, characterized in that: The side close to each other of the two positioning blocks (506) is provided with a V-shaped notch.

3. A positioning device for welding a cooktop burner housing according to claim 1, characterized in that: The inside of the sliding block (508) is threadedly connected with a driving rod (509), the inside of the driving rod (509) and the T-shaped frame (505) is rotatably connected.

4. A positioning device for welding a cooktop burner housing according to claim 1, characterized in that: The lock catch structure (6) comprises a supporting block (61) fixedly connected to the upper surface of the base (1), the inside of the supporting block (61) is slidably connected with a plug rod (62), the surface of the positioning frame (501) is provided with a plug hole (65), and the size of the plug hole (65) is matched with the size of the plug rod (62).

5. A positioning device for welding a cooktop burner housing according to claim 4, characterized in that: The side wall of the plug rod (62) is fixedly connected with a stop block (63), and the end side of the plug rod (62) is fixedly connected with a pulling block (66).

6. A positioning device for welding a cooktop burner housing according to claim 5, characterized in that: The surface of the plug rod (62) is sleeved with a spring (64), and the two ends of the spring (64) are fixedly connected with the stop block (63) and the supporting block (61) respectively.

7. A positioning device for welding a cooktop burner housing according to claim 1, characterized in that: The inside of the moving block (73) is screwedly connected with a first screw rod (74), and the first screw rod (74) is rotatably connected with the inside of a U-shaped frame (76).

8. A positioning device for welding a cooktop burner housing according to claim 1, characterized in that: The surface of the clamping plate (79) is provided with a V-shaped notch.

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