Positioning device for welding stove burner shell

Abstract

The invention discloses a positioning device for stove burner shell welding, and relates to the technical field of stove burner shell machining, the positioning device comprises a base and a burner shell seat, an air inlet pipe and an air inlet pipe are welded on the surface of the burner shell seat, the air inlet pipe is fixedly connected with the air inlet pipe, and the positioning device further comprises an air inlet pipe and an air outlet pipe which are arranged on the upper surface of the base, the positioning structures are respectively used for clamping and fixing the combustor shell seat, the air inlet pipe and the air inlet pipe; the lock catch structure is arranged above the base and drives the positioning structure to be flexibly used; and the auxiliary structure is arranged on the other side of the positioning structure and is used for assisting in welding some small-structure pipelines such as gas ejector pipes on the inner side of the combustor shell seat, and the positioning structure is arranged, so that tight positioning and attaching work among the gas inlet pipe, the air inlet pipe and the combustor shell seat is facilitated; and the stability of subsequent welding between the combustor shells is improved to a certain extent.

Description

Technical Field

[0001] The present invention relates to the technical field of processing of the outer shell of a stove burner, and particularly to a positioning device for welding the outer shell of a stove burner. Background Art

[0002] Welding the outer shell of a stove burner is a key process for fixing the core components of the burner (such as an injector, a pipe, a burner head, etc.) into a complete outer shell through a welding process. This process needs to ensure accurate positioning of each component (such as the injector being centered with the burner head, and the pipe being flush with the end face of the injector) to ensure the installation accuracy and sealing performance of the burner.

[0003] A Chinese patent with the publication number CN109531018B discloses a positioning device for welding the outer shell of a stove burner, 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 and centering device. The clamping and centering device includes a clamping device, a centering device, and a fixing device. There are two groups of clamping devices, and the two groups of clamping devices are arranged in opposite directions on both sides of the fixing device. The clamping device includes a first cylinder, a connecting rod, and a clamping arm. The connecting rod is fixedly connected to the first cylinder; it can fix the injector, the pipe, and the burner head of the burner respectively, so that the welding operation among the three can have greater reliability, ensure complete sealing of the welding of the outer shell of the burner, and achieve greater reliability and economy.

[0004] The existing related technologies often have the following defects: During the process of fixing the outer shell of the stove burner before welding, the burner shell base is often fixed, and then the intake pipe and the air intake pipe are controlled by manual control of holding, which not only reduces the stability of the welding process of the intake pipe and the air intake pipe, but also easily causes errors in the installation of the intake pipe and the air intake pipe on the burner shell base during the welding process, thereby reducing the efficiency of welding and processing the outer shell of the burner.

[0005] Therefore, we propose a positioning device for welding the outer shell of a stove burner. Summary of the Invention

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

[0007] To achieve the above object, the present invention provides the following technical solution: A positioning device for welding the outer shell of a stove burner, including a base and a burner housing seat. An air inlet pipe and an air inlet duct are welded to the surface of the burner housing seat, and the air inlet pipe and the air inlet duct are fixedly connected. The positioning device further includes: a positioning structure disposed on the upper surface of the base for clamping and fixing the burner housing seat, the air inlet pipe, and the air inlet duct respectively; a locking structure disposed above the base for driving and rotating the positioning structure for flexible use; and an auxiliary structure disposed on the other side of the positioning structure for assisting in welding small structural pipes such as some jet pipes inside the burner housing seat.

[0008] The effects achieved by the above components are as follows: By setting the positioning structure, it facilitates the close positioning and abutting work between the air inlet pipe, the air inlet duct, and the burner housing seat, and to a certain extent improves the stability of subsequent welding between the outer shells of the burner. By setting the locking structure, through the rotation and locking work of the positioning frame, the area to be welded on the outer side of the burner can be exposed as much as possible, which facilitates the full welding work of the welding joint of the burner outer shell. By setting the auxiliary structure, it facilitates the flexible clamping and positioning work of small structural pipes such as jet pipes inside the burner housing seat, and facilitates the welding work between the small structural pipes such as jet pipes inside the burner housing seat and the burner housing seat, further improving the use performance of the positioning device for welding the outer shell of the stove burner.

[0009] Preferably, the positioning structure includes two chutes opened on the surface of the base. Two clamping blocks are slidably connected to the inner sides of the chutes. V-shaped notches are opened on the sides of the two clamping blocks close to each other. A first bidirectional lead screw is rotatably connected to the inside of the base. Opposite threads are provided on both sides of the first bidirectional lead screw. The first bidirectional lead screw is threadedly connected to the inside of the clamping blocks. 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 slider is slidably connected to the inside of the limiting groove. A T-shaped frame is slidably connected to the inside of the slider. Two positioning blocks are slidably connected to the inside of the T-shaped frame. A second bidirectional lead screw is rotatably connected to the inside of the T-shaped frame. Opposite threads are provided on both sides of the second bidirectional lead screw. The second bidirectional lead screw is threadedly connected to the inside of the positioning blocks.

[0010] The effects achieved by the above components are as follows: Rotate the first bidirectional lead screw, and use the reverse threads at both ends to drive the two clamping blocks to move towards each other along the chutes inside the base. Clamp the bottom of the burner housing seat through the V-shaped notches on the clamping blocks to fix the burner housing seat in the horizontal direction. Then place the air inlet pipe and the air inlet duct between the two positioning blocks. By rotating the second bidirectional lead screw, use its reverse threads to drive the two positioning blocks to move towards each other through the inner slideways of the T-shaped frame.

[0011] Preferably, a V-shaped notch is provided on one side of the two positioning blocks that are close to each other.

[0012] The effect achieved by the above components is: the air intake pipe and the air intake pipe are clamped by the V-shaped groove of the positioning block, thereby achieving the positioning and clamping work of the air intake pipe and the air intake pipe.

[0013] Preferably, the internal thread of the slider is connected to a driving rod, and the driving rod is rotatably connected to the inside of the T-frame.

[0014] The effect achieved by the above components is: when the driving rod is rotated, the driving rod will push the T-shaped frame to move.

[0015] Preferably, the locking structure includes a support block fixedly connected to the upper surface of the base, an insertion rod is slidably connected to the interior of the support block, and a socket is provided on the surface of the positioning frame, and the size of the socket is adapted to the size of the insertion rod.

[0016] The effect achieved by the above components is that the insertion rod is inserted into the insertion hole on the surface of the positioning frame, which can realize the locking work of the positioning frame after rotation.

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

[0018] The effect achieved by the above components is that the provision of the stop block and the pull block prevents the insertion rod from slipping out of the interior of the support block.

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

[0020] The effect achieved by the above components is that the spring pushes the insertion rod to insert into the insertion hole on the surface of the positioning frame.

[0021] Preferably, the auxiliary structure includes two sliding bars slidably connected to the inside of the positioning frame, the other ends of the two sliding bars are fixedly connected to a rectangular frame, the inner side of the rectangular frame is slidably connected to a moving block, the internal sliding connection of the moving block is two rectangular bars, the lower ends of the two rectangular bars are fixedly connected to a U-shaped frame, the internal sliding connection of the U-shaped frame is two pull-out bars, the ends of the two pull-out bars close to each other are fixedly connected to a splint, the internal thread of the U-shaped frame is connected to a second screw, and the second screw and the internal rotation connection of the splint are.

[0022] The effect achieved by the above components is: by rotating the second screw, the two clamping plates are pushed to move toward each other along the draw bar in the U-shaped frame through the rotation connection between the screw and the clamping plate.

[0023] Preferably, the internal thread connection of the moving block is connected to a first screw rod, and the first screw rod is rotatably connected to the interior of the U-shaped frame.

[0024] The effects achieved by the above components are as follows: Rotate the first screw rod again to drive the moving block to slide within the rectangular frame, and adjust the U-shaped frame to the positions of small structural pipes such as the spray pipe inside the burner housing base.

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

[0026] The effects achieved by the above components are as follows: Clamp the small pipe using the V-shaped notch of the clamping plate to ensure its stability during welding.

[0027] Compared with the prior art, the beneficial effects of the present invention are:

[0028] 1. By setting the positioning structure, the present invention facilitates the close positioning and abutting work between the air inlet pipe, air inlet duct and the burner housing base, and improves the stability of subsequent welding between the burner outer shells to a certain extent.

[0029] 2. By setting the locking structure, through the rotation and locking work of the positioning frame, the area to be welded on the outer side of the burner can be exposed as much as possible, facilitating the full welding work on the welding joint of the burner outer shell.

[0030] 3. By setting the auxiliary structure, the present invention facilitates the flexible clamping and positioning work of small structural pipes such as the spray pipe inside the burner housing base, and facilitates the welding work between the small structural pipes such as the spray pipe inside the burner housing base and the burner housing base, further improving the service performance of the welding positioning device for the burner outer shell of the cooking stove. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0032] Figure 2 is a schematic diagram of the structure of the present invention from another angle;

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

[0034] Figure 4 is a schematic diagram of the structure at the T-shaped frame of the present invention;

[0035] Figure 5 In the present invention Figure 2 is an enlarged view of part A;

[0036] Figure 6 In the present invention Figure 1 is an enlarged view of part B;

[0037] Figure 7 is a schematic diagram of the structure at the auxiliary structure of the present invention;

[0038] Figure 8In the present invention Figure 7 is an enlarged view of part C.

[0039] In the figure: 1, base; 2, burner housing base; 3, intake pipe; 4, air intake pipe; 5, positioning structure; 501, positioning frame; 502, clamping block; 503, sliding groove; 504, first double lead screw; 505, T-shaped frame; 506, positioning block; 507, second double lead screw; 508, slider; 509, driving rod; 510, limiting groove; 511, pivot pin; 6, locking structure; 61, support block; 62, inserting rod; 63, stop block; 64, spring; 65, inserting hole; 66, pulling block; 7, auxiliary structure; 71, sliding strip; 72, rectangular frame; 73, moving block; 74, first screw; 75, rectangular strip; 76, U-shaped frame; 77, second screw; 78, pulling strip; 79, clamping plate. Detailed implementation manners

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

[0041] Please refer to Figure 1-8 , the present invention provides a technical solution: a positioning device for welding the outer shell of a stove burner, including a base 1 and a burner housing base 2. An intake pipe 3 and an air intake pipe 4 are welded on the surface of the burner housing base 2, and the intake pipe 3 and the air intake pipe 4 are fixedly connected. The positioning device further includes:

[0042] A positioning structure 5 arranged on the upper surface of the base 1 for clamping and fixing the burner housing base 2, the intake pipe 3, and the air intake pipe 4 respectively;

[0043] A locking structure 6 arranged above the base 1 for driving and rotating the positioning structure 5 for flexible use;

[0044] An auxiliary structure 7 is provided on the other side of the positioning structure 5 to assist in welding small structural pipes such as some jet pipes inside the burner housing seat 2. By providing the positioning structure 5, it facilitates the close positioning and abutting work between the intake pipe 3, the intake air pipe 4 and the burner housing seat 2, and to a certain extent improves the stability of subsequent welding between the burner housings. By providing the locking structure 6, through the rotation and locking work of the positioning frame 501, the area to be welded on the outside of the burner can be exposed as much as possible, facilitating the overall welding work of the welding joint of the burner housing. By providing the auxiliary structure 7, it facilitates the flexible clamping and positioning work of small structural pipes such as jet pipes inside the burner housing seat 2, and facilitates the welding work between the small structural pipes such as jet pipes inside the burner housing seat 2 and the burner housing seat 2, further improving the use performance of the welding positioning device for the burner housing of the stove.

[0045] Next, the specific settings and functions of its positioning structure 5, locking structure 6 and auxiliary structure 7 will be described in detail.

[0046] Such as Figure 1-5As shown, the positioning structure 5 includes two sliding grooves 503 opened on the surface of the base 1. Two clamping blocks 502 are slidably connected to the inner sides of the sliding grooves 503. Grooves with a V-shaped structure are opened on one side of the two clamping blocks 502 that are close to each other. A first bidirectional lead screw 504 is rotatably connected inside the base 1. Threads with opposite directions are opened on both sides of the first bidirectional lead screw 504. The first bidirectional lead screw 504 is threadedly connected to the inner sides of the clamping blocks 502. A rotating pin 511 is fixedly connected to the upper surface of the base 1. The upper side of the rotating pin 511 is rotatably connected to a positioning frame 501. A limiting groove 510 is opened on the upper side of the positioning frame 501. A slider 508 is slidably connected to the inner side of the limiting groove 510. A T-shaped frame 505 is slidably connected to the inside of the slider 508. Two positioning blocks 506 are slidably connected to the inner side of the T-shaped frame 505. A second bidirectional lead screw 507 is rotatably connected to the inside of the T-shaped frame 505. Threads with opposite directions are opened on both sides of the second bidirectional lead screw 507. The second bidirectional lead screw 507 is threadedly connected to the inside of the positioning blocks 506. Rotate the first bidirectional lead screw 504, and use the reverse threads at both ends to drive the two clamping blocks 502 to move towards each other along the sliding grooves 503 inside the base 1, and clamp the bottom of the burner housing 2 through the V-shaped grooves on the clamping blocks 502, so as to realize the horizontal fixation of the burner housing 2. Then place the air inlet pipe 3 and the air inlet duct 4 at the position between the two positioning blocks 506. By rotating the second bidirectional lead screw 507, use its reverse threads to drive the two positioning blocks 506 to move towards each other through the inner slideways of the T-shaped frame 505. Grooves with a V-shaped structure are opened on one side of the two positioning blocks 506 that are close to each other. Clamp the air inlet pipe 3 and the air inlet duct 4 through the V-shaped grooves of the positioning blocks 506, so as to realize the positioning and clamping work of the air inlet pipe 3 and the air inlet duct 4. A driving rod 509 is threadedly connected to the inside of the slider 508. The driving rod 509 is rotatably connected to the inside of the T-shaped frame 505. Rotate the driving rod 509, and the driving rod 509 will push the T-shaped frame 505 to move.

[0047] As Figure 1-2 and Figure 5 shown, the locking structure 6 includes a support block 61 fixedly connected to the upper surface of the base 1. A plug rod 62 is slidably connected to the inside of the support block 61. A jack 65 is opened on the surface of the positioning frame 501. The size of the jack 65 is adapted to the size of the plug rod 62. Insert the plug rod 62 into the jack 65 on the surface of the positioning frame 501, and the locking work of the rotated positioning frame 501 can be realized. A stop block 63 is fixedly connected to the side wall of the plug rod 62. A pulling block 66 is fixedly connected to the end side of the plug rod 62. The settings of the stop block 63 and the pulling block 66 prevent the plug rod 62 from slipping out of the inside of the support block 61. A spring 64 is sleeved on the surface of the plug rod 62. The two ends of the spring 64 are respectively fixedly connected to the stop block 63 and the support block 61. The spring 64 pushes the plug rod 62 to insert into the jack 65 on the surface of the positioning frame 501.

[0048] As Figure 1-2 and Figure 7 andFigure 8 As shown in the figure, the auxiliary structure 7 includes two slide bars 71 slidably connected inside the positioning frame 501. The other ends of the two slide bars 71 are fixedly connected with a rectangular frame 72. A moving block 73 is slidably connected inside the rectangular frame 72. Two rectangular bars 75 are slidably connected inside the moving block 73. The lower ends of the two rectangular bars 75 are fixedly connected with a U-shaped frame 76. Two draw bars 78 are slidably connected inside the U-shaped frame 76. One ends of the two draw bars 78 close to each other are fixedly connected with clamping plates 79. A second screw rod 77 is threadedly connected inside the U-shaped frame 76, and the second screw rod 77 is rotatably connected inside the clamping plate 79. Rotate the second screw rod 77. Through the rotational connection between the screw rod and the clamping plate 79, the two clamping plates 79 are pushed to move towards each other along the draw bars 78 inside the U-shaped frame 76. A first screw rod 74 is threadedly connected inside the moving block 73, and the first screw rod 74 is rotatably connected inside the U-shaped frame 76. Then rotate the first screw rod 74 to drive the moving block 73 to slide inside the rectangular frame 72, and adjust the U-shaped frame 76 to the position of small structural pipes such as the air injection pipe inside the burner housing seat 2. A V-shaped groove is formed on the surface of the clamping plate 79. The V-shaped groove of the clamping plate 79 is used to clamp the small pipe to ensure its stability during welding.

[0049] Working principle: First, place the burner housing seat 2 between the two clamping blocks 502. Rotate the first bidirectional lead screw 504, and use the reverse threads at both ends to drive the two clamping blocks 502 to move towards each other along the sliding groove 503 inside the base 1. Clamp the bottom of the burner housing seat 2 through the V-shaped groove on the clamping block 502 to achieve the horizontal fixation of the burner housing seat 2. Then place the intake pipe 3 and the intake air pipe 4 between the two positioning blocks 506. By rotating the second bidirectional lead screw 507, use its reverse threads to drive the two positioning blocks 506 to move towards each other through the inner slideway of the T-shaped frame 505. Clamp the intake pipe 3 and the intake air pipe 4 through the V-shaped groove of the positioning block 506 to achieve the positioning and clamping work of the intake pipe 3 and the intake air pipe 4. Push the slider 508 to slide inside the limit groove 510 of the positioning frame 501, and adjust the T-shaped frame 505 to a suitable position. After moving the intake pipe 3 and the intake air pipe 4 to the corresponding installation positions relative to the burner housing seat 2, rotate the drive rod 509. The drive rod 509 will push the T-shaped frame 505 to move until the port positions of the intake pipe 3 and the intake air pipe 4 are closely attached above the burner housing seat 2. Then the positioning and clamping work between the burner housing seat 2 and the intake pipe 3 and the intake air pipe 4 can be achieved, which facilitates the subsequent welding and docking work between the burner housing seat 2 and the intake pipe 3 and the intake air pipe 4. By setting the positioning structure 5, it is convenient for the close positioning and abutting work between the intake pipe 3, the intake air pipe 4 and the burner housing seat 2, and to a certain extent improves the stability of the subsequent welding of the burner housing.

[0050] Rotate the positioning frame 501. When the positioning frame 501 is adjusted to the target angle, the spring 64 pushes the insertion rod 62 into the insertion hole 65 on the surface of the positioning frame 501. Through the limiting action of the stop block 63 and the support block 61, the rotation state of the positioning frame 501 is locked to prevent displacement during the welding process. Pull the pull block 66 to drive the insertion rod 62 out of the insertion hole 65, and then the positioning frame 501 can be rotated flexibly. After the preliminary welding work between the burner casings is completed, the positioning frame 501 and the Y-shaped frame and other structures on it can be rotated to the other side of the base 1, which facilitates the exposure of the areas to be welded on the outer side of the burner as much as possible and is convenient for the overall welding work on the welding joints of the burner casing. By setting the locking structure 6, through the rotation and locking work of the positioning frame 501, the areas to be welded on the outer side of the burner can be exposed as much as possible, which facilitates the overall welding work on the welding joints of the burner casing.

[0051] When welding small structural pipes such as the inner jet pipe of the burner housing seat 2, place the small structural pipes such as the inner jet pipe of the burner housing seat 2 between the two clamping plates 79. Rotate the second screw rod 77. Through the rotational connection between the screw rod and the clamping plate 79, push the two clamping plates 79 to move towards each other along the draw bar 78 in the U-shaped frame 76. Use the V-shaped notch of the clamping plate 79 to clamp the small pipe to ensure its stability during welding and adapt to the positions of pipes of different specifications. Then rotate the first screw rod 74 to drive the moving block 73 to slide within the rectangular frame 72, and adjust the U-shaped frame 76 to the position of the small structural pipes such as the inner jet pipe of the burner housing seat 2. The rectangular bar 75 can slide within the moving block 73 to assist in adjusting the vertical height of the U-shaped frame 76. And by sliding the moving block 73 inside the rectangular frame 72, the installation position of the small structural pipes such as the inner jet pipe of the burner housing seat 2 can be adjusted. At this time, the positioning and abutting work of the small structural pipes such as the inner jet pipe of the burner housing seat 2 can be realized, which facilitates the subsequent welding work on the small structural pipes such as the inner jet pipe of the burner housing seat 2. By setting the auxiliary structure 7, the flexible clamping and positioning work of the small structural pipes such as the inner jet pipe of the burner housing seat 2 is facilitated, and the welding work between the small structural pipes such as the inner jet pipe of the burner housing seat 2 and the burner housing seat 2 is facilitated, further improving the use performance of the welding positioning device for the burner housing of the stove.

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

[0053] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A positioning device for welding the outer shell of a cooker burner, comprising a base (1) and a burner shell base (2), characterized in that: The surface of the burner housing seat (2) is welded with an air inlet pipe (3) and an air inlet duct (4), and the air inlet pipe (3) and the air inlet duct (4) are fixedly connected. Further included are: A positioning structure (5) disposed on the upper surface of the base (1) for clamping and fixing the burner housing seat (2), the air inlet pipe (3), and the air inlet duct (4) respectively; A locking structure (6) disposed above the base (1) for driving and rotating the positioning structure (5) for flexible use; An auxiliary structure (7) disposed on the other side of the positioning structure (5) for assisting in welding small structural pipes such as some jet pipes inside the burner housing seat (2).

2. The positioning device for welding the outer shell of a stove burner according to claim 1, characterized in that: The positioning structure (5) includes two sliding grooves (503) opened on the surface of the base (1). Two clamping blocks (502) are slidably connected inside the sliding grooves (503). V-shaped notches are opened on one side of the two clamping blocks (502) close to each other. A first bidirectional lead screw (504) is rotatably connected inside the base (1). Threads with opposite directions are opened on both sides of the first bidirectional lead screw (504). The first bidirectional lead screw (504) is threadedly connected to the inside of the clamping blocks (502). A rotating pin (511) is fixedly connected to the upper surface of the base (1). A positioning frame (501) is rotatably connected above the rotating pin (511). A limiting groove (510) is opened on the upper side of the positioning frame (501). A slider (508) is slidably connected inside the limiting groove (510). A T-shaped frame (505) is slidably connected inside the slider (508). Two positioning blocks (506) are slidably connected inside the T-shaped frame (505). A second bidirectional lead screw (507) is rotatably connected inside the T-shaped frame (505). Threads with opposite directions are opened on both sides of the second bidirectional lead screw (507). The second bidirectional lead screw (507) is threadedly connected to the inside of the positioning blocks (506).

3. A positioning device for welding the outer shell of a stove burner according to claim 2, characterized in that: V-shaped notches are opened on one side of the two positioning blocks (506) close to each other.

4. A positioning device for welding the outer shell of a stove burner according to claim 2, characterized in that: A driving rod (509) is threadedly connected inside the slider (508). The driving rod (509) is rotatably connected to the inside of the T-shaped frame (505).

5. The positioning device for welding the outer shell of a cooker burner according to claim 2, characterized in that: The locking structure (6) includes a support block (61) fixedly connected to the upper surface of the base (1). A plug rod (62) is slidably connected inside the support block (61). A jack (65) is opened on the surface of the positioning frame (501). The size of the jack (65) is adapted to the size of the plug rod (62).

6. A positioning device for welding the outer shell of a stove burner according to claim 1, characterized in that: A stop block (63) is fixedly connected to the side wall of the plug rod (62). A pull block (66) is fixedly connected to the end side of the plug rod (62).

7. A positioning device for welding the outer shell of a stove burner according to claim 5, characterized in that: A spring (64) is sleeved on the surface of the plug rod (62). The two ends of the spring (64) are respectively fixedly connected to the stop block (63) and the support block (61).

8. A positioning device for welding the outer shell of a stove burner according to claim 1, characterized in that: The auxiliary structure (7) includes two slide bars (71) slidably connected inside the positioning frame (501). The other ends of the two slide bars (71) are fixedly connected to a rectangular frame (72). A moving block (73) is slidably connected to the inner side of the rectangular frame (72). Two rectangular bars (75) are slidably connected inside the moving block (73). The lower ends of the two rectangular bars (75) are fixedly connected to a U-shaped frame (76). Two draw bars (78) are slidably connected inside the U-shaped frame (76). One ends of the two draw bars (78) close to each other are fixedly connected to a clamping plate (79). A second screw rod (77) is threadedly connected inside the U-shaped frame (76). The second screw rod (77) is rotatably connected to the inside of the clamping plate (79).

9. A positioning device for welding the outer shell of a cooking stove burner according to claim 1, characterized in that: A first screw rod (74) is threadedly connected inside the moving block (73). The first screw rod (74) is rotatably connected to the inside of the U-shaped frame (76).

10. A positioning device for welding the outer shell of a cooker burner according to claim 8, characterized in that: A V-shaped notch is formed on the surface of the clamping plate (79).

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