A door ring welding device with a welding opening and a welding manufacturing process

Abstract

The present invention discloses a door ring welding device with a welding live opening and a welding manufacturing process, which relates to the technical field of welding equipment and includes an operating table. A semi-circular block is arranged at the upper end of the operating table, and an arc-shaped groove is formed between the semi-circular block and the operating table. For this door ring welding device with a welding live opening and the welding manufacturing process, rotating rods are arranged at the ends of the turning plates, and the outer surfaces of the rotating rods are slidably connected to the inner walls of the protective plates. The cross-section of the protective plates is arc-shaped. Thus, when the turning plates move to the highest end, they rotate around the rotating rods and push the turning plates to flip. When reaching the highest end, it cooperates with the staff or the electric telescopic rod to push the door ring, so that it moves to the other end through the arc-shaped groove, completing the flipping of the door ring, ensuring the welding quality of the welded part of the live opening, and guaranteeing its functionality.

Description

Technical Field

[0001] The present invention relates to the technology of welding equipment, and particularly to a door ring welding equipment with a welding opening and a welding manufacturing process. Background Art

[0002] The automotive door ring is the door ring structure of the automotive side wall reinforcement panel. The door ring structure is to weld the independent sub - component structures of the traditional upper reinforcement panel of the A - pillar, the lower reinforcement panel of the A - pillar, the B - pillar reinforcement panel, and the sill reinforcement panel of the vehicle body into an integrated door ring structure.

[0003] The automotive door ring is composed of multiple steel plates with different shapes, sizes, and thicknesses. Currently, the pre - welding sheet metal positioning before welding is mainly completed by manually assembling the plates and positioning them on a general magnet platform.

[0004] In the Chinese invention patent with the publication number of CN116787057B, a door ring welding device and a visual solder joint detection device are disclosed. In this door ring welding device and visual solder joint detection device, the door ring is positioned and clamped by an upper positioning plate and a lower positioning plate. At this time, the welding manipulator pre - welds the side of the joint of the door ring at the groove. The negative pressure pump makes the pallet overcome the resilience of the return spring and be stuck under the door ring, and the welding fumes generated are sucked away through the negative pressure holes. By moving the lower positioning plate downward, the welding manipulator can weld the joint under the door ring. The servo motor, the transmission shaft, and the end face gear can drive the upper positioning plate, the lower positioning plate, and the door ring to rotate, and the four joints can be welded. After welding, the lower positioning plate moves upward, the door ring is placed on the lower positioning plate, the upper positioning plate moves upward and is located above the door ring and the negative pressure pump is started to continue exhausting air, and the welding manipulator can weld the joint above the door ring. Pre - welding is carried out under the positioning action of the upper positioning plate and the lower positioning plate, and then welding is carried out respectively. During this process, the upper positioning plate and the lower positioning plate can ensure no thermal deformation during welding, and the welding efficiency is high.

[0005] Currently, there are the following problems when welding the door ring structure. The door ring composed of four parts is generally welded between two parts pairwise. The high heat generated during welding will cause thermal expansion between the workpieces, resulting in inaccurate positioning during subsequent welding. Moreover, both the inner and outer sides of the door ring need to be welded. If the outer - side welding has not cooled and formed during the flipping process, the welding joint is likely to break during the flipping process. At the same time, when docking the door ring, the positioning efficiency is low, and repeated docking is required to ensure accuracy, resulting in a large amount of time consumed during the docking process. Therefore, a door ring welding equipment with a welding opening and a welding manufacturing process have been developed. Summary of the Invention

[0006] The purpose of the present invention is to provide a door ring welding equipment with a welding opening and a welding manufacturing process to solve the above - mentioned deficiencies in the prior art.

[0007] To achieve the above object, the present invention provides the following technical solution: A door ring welding device with a welding opening, including an operating table, on the upper end of which a semi-circular block is provided, and an arc-shaped groove is formed between the semi-circular block and the operating table;

[0008] A flipping assembly, which is assembled on the upper end of the operating table, and is used to flip the door ring after preliminary welding through the flipping assembly;

[0009] Among them, the flipping assembly includes a support plate connected to the operating table, one end of the support plate is provided with a driving member, the output end of the driving member penetrates and extends to the other end of the support plate, and at the same time, a turntable is provided at the output end of the driving member, and a transmission rod is provided at the end of the turntable;

[0010] A swing rod is rotatably installed at the end of the support plate and above the turntable. A chute is opened at one end of the swing rod close to the transmission rod, and the inner wall of the chute is slidably connected to the outer surface of the transmission rod. At the same time, an arc-shaped gear block is provided at the upper end of the swing rod;

[0011] A gear plate is slidably installed at the end of the support plate and above the arc-shaped gear block. The outer surface of the gear plate is meshed with the outer surface of the arc-shaped gear block. A limiting block is provided at the end of the gear plate, and a limiting groove is opened at one end of the limiting block away from the gear plate;

[0012] A positioning block is provided on the upper end of the operating table, and a driving groove is opened at the end of the positioning block. The inner wall of the driving groove is slidably connected to the outer surface of the limiting block;

[0013] Protective plates are symmetrically arranged on the upper end of the operating table. At the same time, a flipping plate is slidably installed between the two protective plates. An adjusting block is provided on one side of the flipping plate. At the same time, a convex block is provided at one end of the adjusting block away from the flipping plate. The outer surface of the convex block is slidably connected to the inner wall of the limiting groove;

[0014] A positioning assembly, which is assembled at the lower end of the flipping plate, and is used to preliminarily limit the door ring through the positioning assembly.

[0015] As a further optimized solution of the present invention, an activity groove is opened at the lower end of the flipping plate, and the inner wall of the activity groove is slidably connected to the upper end of the positioning assembly.

[0016] As a further optimized solution of the present invention, the positioning assembly includes a fixing plate, a power member is provided at the end of the fixing plate, the output end of the power member penetrates and extends to the other end of the fixing plate, and at the same time, a power plate is provided at the output end of the power member.

[0017] As a further optimization scheme of the present invention, first rotation grooves and second rotation grooves are respectively formed at both ends of the power plate, and a power rod is slidably installed on the inner wall of the first rotation groove, and the upper end of the power rod is rotatably connected to the end of the fixing plate.

[0018] As a further optimization scheme of the present invention, the cross-section of the power rod is V-shaped, and an extension rod is provided at one end away from the end slidably connected to the first rotation groove.

[0019] As a further optimization scheme of the present invention, an adjusting plate is slidably installed at the end of the fixing plate and below the power plate. A transmission groove is formed on one side of the adjusting plate, and the outer surface of the extension rod is slidably connected to the inner wall of the transmission groove.

[0020] As a further optimization scheme of the present invention, a clamping groove is formed at one end of the adjusting plate away from the transmission groove, and the door ring is defined by the clamping groove.

[0021] As a further optimization scheme of the present invention, a power block is slidably installed on the inner wall of the second rotation groove, and one end of the power block is rotatably connected to the end of the fixing plate.

[0022] As a further optimization scheme of the present invention, a push plate is slidably installed at the end of the fixing plate. A guiding groove is formed on one side of the push plate, and the lower end of the power block is slidably connected to the inner wall of the guiding groove;

[0023] One end of the push plate is provided with an inclined block. At the same time, a positioning plate is slidably installed at the end of the fixing plate and below the inclined block, and the outer surface of the positioning plate is attached to one side of the inclined block.

[0024] A manufacturing process for welding a door ring with a welding opening includes the following steps:

[0025] S1. First, according to the design of the door ring, the opening part is pre-treated, and at the same time, the door ring is fixed on the operating table using a special fixture;

[0026] S2. The welding area is appropriately polished and cleaned;

[0027] S3. After the preliminary welding is completed, the door ring is flipped for secondary welding;

[0028] S4. The welded door ring is inspected, and the burrs of the welded door ring are removed.

[0029] Compared with the prior art, a door ring welding device and a welding manufacturing process with a welding live joint provided by the present invention have the following beneficial effects: When the limit block moves, it drives the convex block slidingly installed on the inner wall of the limit groove to move. Since the convex block is arranged on the adjusting block, when the adjusting block moves, the turning plate is synchronously driven to move. An activity groove is opened at the lower end of the turning plate, and the upper end of the positioning component is slidably connected to the inner wall of the activity groove.

[0030] At the same time, rotating rods are arranged at the ends of the turning plate, and the outer surface of the rotating rod is slidably connected to the inner wall of the protective plate. The cross-section of the protective plate is arc-shaped. When the turning plate moves to the highest end, it rotates around the rotating rod and pushes the turning plate to turn. When it reaches the highest end, it cooperates with the staff or the electric telescopic rod to push the door ring, so that it moves to the other end through the arc-shaped groove, completing the turning of the door ring and ensuring the welding quality of the welded part of the live joint and guaranteeing its functionality.

[0031] When the push plate moves, the inclined block arranged on its outer surface is synchronously driven to move. When the inclined block moves, it squeezes the positioning plate, causing the positioning plate to move outward and restricting the clamping block passing through the clamping groove, ensuring that the contour of the fixture conforms to the shape of the workpiece, enabling full contact and preventing displacement during welding.

[0032] At the same time, one end of the positioning plate is provided with an elastic component such as a spring, which is used to support the positioning plate, so that after the inclined block is separated from the positioning plate, the positioning plate is pulled back to the initial position by the spring, facilitating the next operation. Description of the Drawings

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0034] Figure 1 It is the first schematic diagram of the overall structure provided by the embodiment of the present invention;

[0035] Figure 2 It is the second schematic diagram of the overall structure provided by the embodiment of the present invention;

[0036] Figure 3 It is the first cross-sectional view of the internal structure of the turning component provided by the embodiment of the present invention;

[0037] Figure 4 It is the second cross-sectional view of the internal structure of the turning component provided by the embodiment of the present invention;

[0038] Figure 5 It is the third cross-sectional view of the internal structure of the turning component provided by the embodiment of the present invention;

[0039] Figure 6 Schematic diagram of the positioning component structure provided by the embodiment of the present invention;

[0040] Figure 7 First cross-sectional view of the internal structure of the positioning component provided by the embodiment of the present invention;

[0041] Figure 8 Second cross-sectional view of the internal structure of the positioning component provided by the embodiment of the present invention;

[0042] Figure 9 Schematic diagram of the overall process provided by the embodiment of the present invention.

[0043] Explanation of reference numerals:

[0044] 1. Operating table; 2. Flipping component; 3. Positioning component; 11. Semi-circular block; 12. Arc-shaped groove; 21. Driving member; 22. Turntable; 23. Transmission rod; 24. Swing rod; 241. Sliding groove; 242. Arc-shaped gear block; 25. Support plate; 26. Gear plate; 261. Limiting block; 262. Limiting groove; 27. Positioning block; 271. Driving groove; 28. Adjusting block; 281. Protrusion; 282. Flipping plate; 283. Activity groove; 29. Protective plate; 31. Fixed plate; 311. Power member; 32. Power plate; 321. First rotation groove; 322. Second rotation groove; 33. Power rod; 34. Extension rod; 35. Adjusting plate; 351. Clamping groove; 352. Transmission groove; 36. Power block; 37. Pushing plate; 371. Guide groove; 372. Inclined block; 38. Positioning plate. Detailed implementation manners

[0045] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with 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.

[0046] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention; the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and defined, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements.

[0047] For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] Embodiment 1

[0049] Please refer to Figures 1-8 , a door ring welding device with a welding opening, including an operating table 1. A semi-circular block 11 is arranged at the upper end of the operating table 1, and an arc-shaped groove 12 is formed between the semi-circular block 11 and the operating table 1.

[0050] In this solution, the turning plate 282 is limited by the arc-shaped groove 12, so that when the turning plate 282 rotates, there will be no shaking.

[0051] Furthermore, a turning assembly 2 is assembled at the upper end of the operating table 1, and the preliminarily welded door ring is turned by the turning assembly 2; among them, the turning assembly 2 includes a support plate 25 connected to the operating table 1. One end of the support plate 25 is provided with a driving member 21. The output end of the driving member 21 penetrates and extends to the other end of the support plate 25. At the same time, a turntable 22 is arranged at the output end of the driving member 21, and a transmission rod 23 is arranged at the end of the turntable 22.

[0052] In this embodiment, the driving member 21 is a device with power output such as a motor and is connected to an external control device. When the driving member 21 is started, the turntable 22 arranged at its output end is synchronously driven to rotate; among them, the transmission rod 23 is at the edge of the turntable 22, so that when the turntable 22 rotates, the transmission rod 23 rotates around the center of the turntable 22.

[0053] Further, a swing rod 24 is rotatably installed at the end of the support plate 25 and above the turntable 22. A chute 241 is formed at one end of the swing rod 24 close to the transmission rod 23, and the inner wall of the chute 241 is slidably connected to the outer surface of the transmission rod 23. At the same time, an arc gear block 242 is provided at the upper end of the swing rod 24.

[0054] Specifically, when the turntable 22 rotates, it drives the transmission rod 23 to rotate. Since the outer surface of the transmission rod 23 is slidably connected to the inner wall of the chute 241, it synchronously drives the swing rod 24 to rotate around the connection with the support plate 25 and drives the arc gear block 242 to move.

[0055] Further, a gear plate 26 is slidably installed at the end of the support plate 25 and above the arc gear block 242. The outer surface of the gear plate 26 is engaged with the outer surface of the arc gear block 242. A limiting block 261 is provided at the end of the gear plate 26, and a limiting groove 262 is formed at one end of the limiting block 261 away from the gear plate 26.

[0056] Specifically, when the arc gear block 242 moves, it synchronously drives the gear plate 26 engaged with it to move. The gear plate 26 is slidably connected to the outer surface of the support plate 25 and is limited by two buckles. Since the limiting block 261 is provided at the end of the gear plate 26, the limiting block 261 moves synchronously with the gear plate 26.

[0057] Further, a positioning block 27 is provided at the upper end of the operating table 1. A driving groove 271 is formed at the end of the positioning block 27, and the inner wall of the driving groove 271 is slidably connected to the outer surface of the limiting block 261.

[0058] Specifically, the limiting block 261 is limited by the driving groove 271, so that when the limiting block 261 moves, the whole remains stable and does not shake.

[0059] Further, protective plates 29 are symmetrically provided at the upper end of the operating table 1. A turning plate 282 is slidably installed between the two protective plates 29. An adjusting block 28 is provided on one side of the turning plate 282. At the same time, a convex block 281 is provided at one end of the adjusting block 28 away from the turning plate 282, and the outer surface of the convex block 281 is slidably connected to the inner wall of the limiting groove 262.

[0060] Specifically, when the limiting block 261 moves, it drives the convex block 281 slidably installed on the inner wall of the limiting groove 262 to move. Since the convex block 281 is provided on the adjusting block 28, when the adjusting block 28 moves, it synchronously drives the turning plate 282 to move.

[0061] An activity groove 283 is formed at the lower end of the turning plate 282, and the inner wall of the activity groove 283 is slidably connected to the upper end of the positioning assembly 3.

[0062] Both ends of the turning plate 282 are provided with rotating rods, and the outer surface of the rotating rod is slidably connected to the inner wall of the protection plate 29. The cross-section of the protection plate 29 is arc-shaped. When the turning plate 282 moves to the extreme end, it rotates around the rotating rod and pushes the turning plate 282 to turn. When it reaches the highest end, it cooperates with the staff or the electric telescopic rod to push the door ring, so that it moves to the other end through the arc-shaped groove 12, completing the turning of the door ring.

[0063] Furthermore, the positioning component 3 is assembled at the lower end of the turning plate 282 to preliminarily limit the door ring through the positioning component 3.

[0064] The positioning component 3 includes a fixing plate 31. A power component 311 is arranged at the end of the fixing plate 31. The output end of the power component 311 penetrates and extends to the other end of the fixing plate 31. At the same time, a power plate 32 is arranged at the output end of the power component 311.

[0065] In this embodiment, the power component 311 is a device with power output such as a motor and is connected to an external control device. When the power component 311 is started, it synchronously drives the power plate 32 arranged at its output end to rotate.

[0066] Furthermore, a first rotating groove 321 and a second rotating groove 322 are respectively formed at both ends of the power plate 32. A power rod 33 is slidably installed on the inner wall of the first rotating groove 321. The upper end of the power rod 33 is rotatably connected to the end of the fixing plate 31. The cross-section of the power rod 33 is V-shaped. At the same time, an extension rod 34 is arranged at the end far from the sliding connection with the first rotating groove 321.

[0067] Specifically, when the power plate 32 rotates, it drives the power rod 33 to rotate around the connection with the fixing plate 31 in cooperation with the first rotating groove 321, and at the same time drives the extension rod 34 arranged on the power rod 33 to move.

[0068] Furthermore, an adjusting plate 35 is slidably installed at the end of the fixing plate 31 and below the power plate 32. A transmission groove 352 is formed on one side of the adjusting plate 35. The inner wall of the transmission groove 352 is slidably connected to the outer surface of the extension rod 34. A clamping groove 351 is formed at one end of the adjusting plate 35 far from the transmission groove 352. The door ring is limited through the clamping groove 351.

[0069] Specifically, the adjusting plate 35 is driven to move through the extension rod 34, and the door ring is limited through the clamping groove 351. The door ring is clamped through components with a fixing function such as clamping blocks, and the end of the clamping block is limited through the clamping groove 351, thereby fixing the door ring.

[0070] Further, a power block 36 is slidably mounted on the inner wall of the second rotation groove 322, and one end of the power block 36 is rotatably connected to the end of the fixing plate 31.

[0071] A push plate 37 is slidably mounted at the end of the fixing plate 31. A guiding groove 371 is formed on one side of the push plate 37, and the inner wall of the guiding groove 371 is slidably connected to the lower end of the power block 36.

[0072] Specifically, when the power plate 32 rotates, the power block 36 is driven to move in cooperation with the second rotation groove 322. Since the lower end of the power block 36 is slidably connected to the inner wall of the guiding groove 371, when the power block 36 moves, the push plate 37 is synchronously driven to move.

[0073] Further, an inclined block 372 is provided at one end of the push plate 37. At the same time, a positioning plate 38 is slidably mounted at the end of the fixing plate 31 and below the inclined block 372, and the outer surface of the positioning plate 38 is attached to one side of the inclined block 372.

[0074] Specifically, when the push plate 37 moves, the inclined block 372 provided on its outer surface is synchronously driven to move. When the inclined block 372 moves, the positioning plate 38 is extruded, so that the positioning plate 38 moves outward and restricts the clamping block passing through the clamping groove 351.

[0075] At the same time, one end of the positioning plate 38 is provided with an elastic member such as a spring for supporting the positioning plate 38, so that after the inclined block 372 is separated from the positioning plate 38, the positioning plate 38 is pulled back to the initial position by the spring for the next operation.

[0076] The control device can select a single-chip microcomputer as the control terminal. In this embodiment, the single-chip microcomputer is a typical embedded microcontroller (Micro controller Unit), which is composed of an arithmetic unit, a controller, a memory, input and output devices, etc., and is equivalent to a micro computer.

[0077] Compared with the general-purpose microprocessor applied in a personal computer, it emphasizes more on self-supply (without external hardware) and cost saving. Its greatest advantage is its small size, which can be placed inside the instrument, but its storage capacity is small, the input and output interfaces are simple, and the function consumption is low.

[0078] Embodiment 2

[0079] Please refer to Figure 9 , a manufacturing process for welding a door ring with a welding opening, comprising the following steps:

[0080] S1. First, according to the design of the door ring, the opening part is pre-treated, and at the same time, the door ring is fixed on the operating table using a special fixture;

[0081] S2. Appropriate grinding and cleaning are carried out on the welding area;

[0082] S3. After the preliminary welding is completed, turn over the door ring for secondary welding;

[0083] S4. Inspect the door ring after welding is completed, and deburr the welded door ring.

[0084] Only some exemplary embodiments of the present invention are described above by way of illustration. Undoubtedly, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A door ring welding device with a welding opening, characterized in that: It comprises an operating table (1), wherein a semicircular block (11) is provided at the upper end of the operating table (1), and an arc-shaped groove (12) is formed between the semicircular block (11) and the operating table (1); A turning assembly (2) is mounted on the upper end of the operating table (1), and the door ring that has been preliminarily welded is turned over by the turning assembly (2); The turning assembly (2) comprises a support plate (25) connected to the operating table (1); a driving member (21) is provided at one end of the support plate (25); an output end of the driving member (21) penetrates and extends to the other end of the support plate (25); a rotating disk (22) is provided at the output end of the driving member (21); a transmission rod (23) is provided at the end of the rotating disk (22); A swing rod (24) is rotatably mounted at the end of the support plate (25) and located above the rotating disk (22); a slide groove (241) is provided at one end of the swing rod (24) close to the transmission rod (23); an inner wall of the slide groove (241) is slidably connected to an outer surface of the transmission rod (23); and an arc-shaped gear block (242) is provided at the upper end of the swing rod (24); A gear plate (26) is slidably mounted at the end of the support plate (25) and located above the arc-shaped gear block (242); the outer surface of the gear plate (26) is meshed with the outer surface of the arc-shaped gear block (242); a limiting block (261) is provided at the end of the gear plate (26); and a limiting groove (262) is provided at one end of the limiting block (261) away from the gear plate (26); A positioning block (27) is provided at the upper end of the operating table (1), a driving groove (271) is provided at the end of the positioning block (27), and an inner wall of the driving groove (271) is slidably connected to an outer surface of the limiting block (261); The upper end of the operating table (1) is symmetrically provided with protective plates (29), and a flip plate (282) is slidably installed between the two protective plates (29), an adjustment block (28) is provided on one side of the flip plate (282), and a protrusion (281) is provided on the end of the adjustment block (28) away from the flip plate (282), and the outer surface of the protrusion (281) is slidably connected to the inner wall of the limiting groove (262); A positioning assembly (3) is mounted on the lower end of the flip plate (282), and the door knocker is initially defined by the positioning assembly (3).

2. A door ring welding device with a welding opening according to claim 1, characterized in that: A movable groove (283) is provided at the lower end of the flip plate (282), and the inner wall of the movable groove (283) is slidably connected to the upper end of the positioning assembly (3).

3. A door ring welding device with a welding opening according to claim 1, characterized in that: The positioning assembly (3) comprises a fixing plate (31), a power piece (311) being provided at the end of the fixing plate (31), an output end of the power piece (311) passing through and extending to the other end of the fixing plate (31), and a power plate (32) being provided at the output end of the power piece (311).

4. A door ring welding device with a welding opening according to claim 3, characterized in that: A first rotation groove (321) and a second rotation groove (322) are respectively formed at both ends of the power plate (32), and a power rod (33) is slidably mounted on the inner wall of the first rotation groove (321), and the upper end of the power rod (33) is rotationally connected to the end of the fixed plate (31).

5. The door ring welding device with a welding opening according to claim 4, characterized in that: The cross section of the power rod (33) is V-shaped, and an extension rod (34) is provided at one end away from the end that is slidably connected to the first rotation groove (321).

6. The door ring welding device with a welding opening according to claim 5, characterized in that: An adjustment plate (35) is slidably mounted at the end of the fixed plate (31) and below the power plate (32); a transmission groove (352) is provided on one side of the adjustment plate (35); and an inner wall of the transmission groove (352) is slidably connected to an outer surface of the extension rod (34).

7. The door ring welding device with a welding opening according to claim 6, characterized in that: A clamping groove (351) is provided on one side of the adjustment plate (35) and at one end away from the transmission groove (352), and the door ring is restricted by the clamping groove (351).

8. The door ring welding device with a welding opening according to claim 7, characterized in that: A power block (36) is slidably mounted on the inner wall of the second rotating groove (322), and one end of the power block (36) is rotatably connected to the end of the fixing plate (31).

9. The door ring welding device with a welding opening according to claim 8, characterized in that: A push plate (37) is slidably mounted on the end of the fixed plate (31), a guide groove (371) is provided on one side of the push plate (37), and an inner wall of the guide groove (371) is slidably connected to the lower end of the power block (36); An inclined block (372) is provided at one end of the push plate (37), and a positioning plate (38) is slidably mounted at the end of the fixed plate (31) and below the inclined block (372), and an outer surface of the positioning plate (38) is in contact with one side of the inclined block (372).

10. A welding manufacturing process for a door ring welding device with a welding opening according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. First, pre-process the movable part according to the door knocker design, and use a special clamp to fix the door knocker on the operating table; S2. Properly grind and clean the welding area; S3. After the initial welding is completed, the door ring is turned over for secondary welding; S4, inspecting the welded door ring and performing a deburring process on the welded door ring.

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