Door ring welding equipment with welding movable opening and welding manufacturing process

Abstract

The invention discloses door ring welding equipment with a welding movable opening and a welding manufacturing process, and relates to the technical field of welding equipment.The door ring welding equipment comprises an operation table, a semicircular block is arranged at the upper end of the operation table, and an arc-shaped groove is formed between the semicircular block and the operation table; according to the door ring welding equipment with the welding movable opening and the welding manufacturing process, rotating rods are arranged at the ends of overturning plates, the outer surfaces of the rotating rods are slidably connected with the inner wall of a protection plate, the cross section of the protection plate is in an arc shape, when the overturning plates move to the highest end, the overturning plates rotate around the rotating rods and push the overturning plates to overturn, and when the overturning plates reach the highest end, the rotating rods rotate around the rotating rods and push the overturning plates to overturn. And the door ring is pushed by cooperating with a worker or an electric telescopic rod, so that the door ring moves to the other end through an arc-shaped groove, overturning of the door ring is completed, the welding quality of a movable opening welding part is ensured, and the functionality of the movable opening welding part is ensured.

Description

Technical Field

[0001] The invention relates to welding equipment technology, in particular to door ring welding equipment with a welding opening and a welding manufacturing process. Background Art

[0002] The automobile door ring is the automobile side reinforcement plate door ring structure. The door ring structure is to weld the traditional automobile body A-pillar upper reinforcement plate, A-pillar lower reinforcement plate, B-pillar reinforcement plate and door sill reinforcement plate independent sub-structures into an integrated door ring structure.

[0003] Automobile door knockers are composed of multiple steel plates of different shapes, sizes and thicknesses. Currently, the plate positioning before welding is mainly completed by manually positioning the plates on a universal magnet platform.

[0004] The Chinese invention patent with publication number CN116787057B discloses a door ring welding device and a visual welding spot detection device. The door ring welding device and the visual welding spot detection device position and clamp the door ring through the upper positioning plate and the lower positioning plate. At this time, the welding manipulator pre-welds the side of the joint of the door ring at the groove, and the negative pressure pump is used to make the support plate overcome the rebound force of the reset spring and clamp it under the door ring, and the smoke generated by the welding is sucked away through the negative pressure hole, and the welding manipulator moves downward through the lower positioning plate, and the welding manipulator can weld the joint under the door ring. Then, the servo motor, transmission shaft and end 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, and the door ring is placed on the lower positioning plate. After the upper positioning plate moves upward, it is above the door ring and the negative pressure pump is started to continue to exhaust air. The joint above the door ring can be welded by the welding manipulator, and pre-welding is performed under the positioning action of the upper and lower positioning plates, and then welding is performed separately. In this process, the upper and lower positioning plates can ensure that no thermal deformation occurs during welding, and the welding efficiency is high.

[0005] At present, there are the following problems when welding the door ring structure. The door ring composed of four parts is generally welded between two parts. The high heat generated by welding will cause thermal expansion between the workpieces, resulting in inaccurate positioning during the subsequent welding process. In addition, both the inside and outside of the door ring need to be welded. During the flipping process, if the outer welding is not cooled and formed, the flipping process is likely to cause the weld to break. At the same time, when the door ring is docked, its positioning efficiency is low, and repeated docking is required to ensure accuracy, resulting in a lot of time spent in the docking process. Therefore, a door ring welding equipment and welding manufacturing process with a welding joint have been developed. Summary of the invention

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

[0007] In order to achieve the above object, the present invention provides the following technical solution: a door ring welding device with a welding opening, comprising an operating table, a semicircular block is arranged on the upper end of the operating table, and an arc groove is formed between the semicircular block and the operating table; A turning assembly is mounted on the upper end of the operating table, and the door ring that has been preliminarily welded is turned over by the turning assembly; The flip assembly includes a support plate connected to the operating table, a driving member is arranged at one end of the support plate, an output end of the driving member penetrates and extends to the other end of the support plate, and a turntable is arranged at the output end of the driving member, and a transmission rod is arranged at the end of the turntable; A swing rod is rotatably mounted at the end of the support plate and located above the turntable, a slide groove is provided at one end of the swing rod close to the transmission rod, the inner wall of the slide groove is slidably connected to the outer surface of the transmission rod, and an arc-shaped gear block is provided at the upper end of the swing rod; A gear plate is slidably mounted at the end of the support plate and located 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 arranged at the end of the gear plate, and a limiting groove is arranged at one end of the limiting block away from the gear plate; A positioning block is provided at the upper end of the operating table, a driving groove is provided at the end of the positioning block, and the inner wall of the driving groove is slidably connected to the outer surface of the limiting block; The upper end of the operating table is symmetrically provided with protective plates, and a flip plate is slidably installed between the two protective plates, an adjustment block is provided on one side of the flip plate, and a protrusion is provided on the end of the adjustment block away from the flip plate, and the outer surface of the protrusion is slidably connected to the inner wall of the limiting groove; A positioning assembly is assembled at the lower end of the flip plate, and the door ring is preliminarily defined by the positioning assembly.

[0008] As a further optimization solution of the present invention, a movable groove is opened at the lower end of the flip plate, and the inner wall of the movable groove is slidably connected to the upper end of the positioning assembly.

[0009] As a further optimization scheme of the present invention, the positioning assembly includes a fixing plate, a power piece is arranged at the end of the fixing plate, an output end of the power piece passes through and extends to the other end of the fixing plate, and a power plate is arranged at the output end of the power piece.

[0010] As a further optimization scheme of the present invention, a first rotation groove and a second rotation groove are respectively opened 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 fixed plate.

[0011] As a further optimization solution of the present invention, the cross section of the power rod is V-shaped, and an extension rod is provided at the end away from the end slidably connected to the first rotating groove.

[0012] As a further optimization scheme of the present invention, an adjustment plate is slidably installed at the end of the fixed plate and below the power plate, a transmission groove is opened on one side of the adjustment plate, and the inner wall of the transmission groove is slidably connected to the outer surface of the extension rod.

[0013] As a further optimization solution of the present invention, a clamping groove is provided on one side of the adjustment plate and at one end away from the transmission groove, and the door ring is restricted by the clamping groove.

[0014] As a further optimization solution of the present invention, a power block is slidably mounted on the inner wall of the second rotating groove, and one end of the power block is rotatably connected to the end of the fixed plate.

[0015] As a further optimization solution of the present invention, a push plate is slidably mounted on the end of the fixed plate, a guide groove is provided on one side of the push plate, and an inner wall of the guide groove is slidably connected to the lower end of the power block; An inclined block is arranged at one end of the push plate, and a positioning plate is slidably mounted at the end of the fixed plate and below the inclined block, and the outer surface of the positioning plate is fitted with one side of the inclined block.

[0016] A door ring welding manufacturing process with a welding joint comprises the following steps: 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. Grind and clean the welding area appropriately; S3. After the initial welding is completed, the door ring is turned over for secondary welding; S4, inspecting the door ring after welding, and deburring the door ring after welding.

[0017] Compared with the prior art, the door ring welding device and welding manufacturing process provided by the present invention have the following beneficial effects: when the limit block moves, the protrusion slidably mounted on the inner wall of the limit groove is driven to move, and because the protrusion is arranged on the adjustment block, when the adjustment block moves, the flip plate is synchronously driven to move. A movable groove is provided at the lower end of the flip plate, and the inner wall of the movable groove is slidably connected to the upper end of the positioning assembly.

[0018] At the same time, a rotating rod is provided at the end of the flip plate, and the outer surface of the rotating rod is slidably connected to the inner wall of the protective plate, wherein the cross-section of the protective plate is arc-shaped, and then when the flip plate moves to the highest end, it rotates around the rotating rod and pushes the flip plate to flip. When it reaches the highest end, the staff or the electric telescopic rod pushes the door ring to move it to the other end through the arc groove to complete the flipping of the door ring, thereby ensuring the welding quality of the movable welding part and its functionality.

[0019] When the push plate moves, it synchronously drives the inclined block set on its outer surface to move. When the inclined block moves, it squeezes the positioning plate, causing the positioning plate to move outward and restricts the clamping block passing through the clamping groove, ensuring that the contour of the fixture matches the shape of the workpiece and can fully contact to avoid displacement during welding.

[0020] 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 to the initial position by the spring to facilitate the next operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0022] Figure 1 A first schematic diagram of the overall structure provided by an embodiment of the present invention; Figure 2 A second schematic diagram of the overall structure provided by an embodiment of the present invention; Figure 3 A first cross-sectional view of the internal structure of a flip assembly provided by an embodiment of the present invention; Figure 4 A second cross-sectional view of the internal structure of the flip assembly provided by an embodiment of the present invention; Figure 5 A third cross-sectional view of the internal structure of the flip assembly provided by an embodiment of the present invention; Figure 6 A schematic diagram of the structure of a positioning component provided in an embodiment of the present invention; Figure 7 A first cross-sectional view of the internal structure of a positioning assembly provided by an embodiment of the present invention; Figure 8 A second cross-sectional view of the internal structure of the positioning assembly provided by an embodiment of the present invention; Fig. 9 The present invention provides an overall flow chart of the embodiment of the present invention.

[0023] Description of reference numerals: 1. Operating table; 2. Flip assembly; 3. Positioning assembly; 11. Semicircular block; 12. Arc groove; 21. Driving member; 22. Turntable; 23. Transmission rod; 24. Swing rod; 241. Slide groove; 242. Arc gear block; 25. Support plate; 26. Gear plate; 261. Limit block; 262. Limit groove; 27. Positioning block; 271. Driving groove; 28. Adjusting block; 281. Bump; 282. Flip plate; 283. Movable groove; 29. ​​Protective plate; 31. Fixed plate; 311. Power member; 32. Power plate; 321. First rotating groove; 322. Second rotating groove; 33. Power rod; 34. Extension rod; 35. Adjusting plate; 351. Snap groove; 352. Transmission groove; 36. Power block; 37. Push plate; 371. Guide groove; 372. Oblique block; 38. Positioning plate. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention; the terms "first", "second" and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" 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, or it can be internal communication between two elements.

[0026] For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Embodiment 1 See also Figure 1-Figure 8 A door ring welding device with a welding joint includes an operating table 1, a semicircular block 11 is arranged on the upper end of the operating table 1, and an arc groove 12 is formed between the semicircular block 11 and the operating table 1.

[0028] In this solution, the flip plate 282 is limited by the arc groove 12 so that no shaking occurs when the flip plate 282 rotates.

[0029] Furthermore, a flip assembly 2 is assembled on the upper end of the operating table 1, and the door knocker that has been preliminarily welded is flipped by the flip assembly 2; wherein the flip assembly 2 includes a support plate 25 connected to the operating table 1, and a driving member 21 is provided at one end of the support plate 25, and the output end of the driving member 21 passes through and extends to the other end of the support plate 25, and a turntable 22 is provided at the output end of the driving member 21, and a transmission rod 23 is provided at the end of the turntable 22.

[0030] 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, it synchronously drives the turntable 22 arranged at its output end to rotate; wherein 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.

[0031] Furthermore, a swing rod 24 is rotatably installed at the end of the support plate 25 and located above the turntable 22. A slide groove 241 is provided at one end of the swing rod 24 close to the transmission rod 23. The inner wall of the slide groove 241 is slidably connected to the outer surface of the transmission rod 23. At the same time, an arc-shaped gear block 242 is provided at the upper end of the swing rod 24.

[0032] Specifically, when the turntable 22 rotates, the transmission rod 23 is driven to rotate. Since the outer surface of the transmission rod 23 is slidably connected to the inner wall of the slide groove 241, the swing rod 24 is synchronously driven to rotate around the connection with the support plate 25, and the arc gear block 242 is driven to move.

[0033] Furthermore, a gear plate 26 is slidably installed at the end of the support plate 25 and 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.

[0034] Specifically, when the arc-shaped gear block 242 moves, the gear plate 26 meshing with it is synchronously driven to move, wherein the gear plate 26 is slidably connected to the outer surface of the support plate 25, and the gear plate 26 is limited by two clips. Since the limit block 261 is set at the end of the gear plate 26, the limit block 261 moves synchronously with the gear plate 26.

[0035] Furthermore, a positioning block 27 is disposed at the upper end of the operating table 1 , and 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 .

[0036] Specifically, the limit block 261 is limited by the driving groove 271, so that when the limit block 261 moves, the whole remains stable and does not shake.

[0037] Furthermore, a protective plate 29 is symmetrically arranged at the upper end of the operating table 1, and a flip plate 282 is slidably installed between the two protective plates 29. An adjusting block 28 is arranged on one side of the flip plate 282, and a protrusion 281 is arranged on the end of the adjusting 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.

[0038] Specifically, when the limiting block 261 moves, the protrusion 281 slidably mounted on the inner wall of the limiting groove 262 is driven to move. Since the protrusion 281 is arranged on the adjusting block 28, when the adjusting block 28 moves, the flip plate 282 is synchronously driven to move.

[0039] A movable groove 283 is formed 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 .

[0040] At the same time, a rotating rod is provided at the end of the flip plate 282, and the outer surface of the rotating rod is slidably connected to the inner wall of the protective plate 29, wherein the cross-section of the protective plate 29 is arc-shaped, and then when the flip plate 282 moves to the extreme end, it rotates around the rotating rod and pushes the flip plate 282 to flip. When it reaches the highest end, the door knocker is pushed by the staff or the electric telescopic rod to move it to the other end through the arc groove 12 to complete the flipping of the door knocker.

[0041] Furthermore, the positioning assembly 3 is assembled at the lower end of the flip plate 282, and the door ring is preliminarily defined by the positioning assembly 3.

[0042] The positioning assembly 3 includes a fixing plate 31 , an end of which is provided with a power piece 311 , an output end of the power piece 311 passes through and extends to the other end of the fixing plate 31 , and a power plate 32 is provided at the output end of the power piece 311 .

[0043] In this embodiment, the power member 311 is a device with power output such as a motor, and is connected to an external control device. When the power member 311 is started, it synchronously drives the power plate 32 arranged at its output end to rotate.

[0044] Furthermore, 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 rotatably connected to the end of the fixed plate 31. The cross section of the power rod 33 is V-shaped, and an extension rod 34 is provided at one end away from the sliding connection with the first rotation groove 321.

[0045] Specifically, when the power plate 32 rotates, the first rotation groove 321 drives the power rod 33 to rotate around the connection with the fixed plate 31, and at the same time drives the extension rod 34 provided on the power rod 33 to move.

[0046] Furthermore, an adjustment plate 35 is slidably mounted at the end of the fixed plate 31 and below the power plate 32, and a transmission groove 352 is provided on one side of the adjustment plate 35, and 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 provided on one side of the adjustment plate 35 and at one end away from the transmission groove 352, and the door ring is limited by the clamping groove 351.

[0047] Specifically, the adjustment plate 35 is driven to move by the extension rod 34, and the door ring is restricted by the clamping groove 351, wherein the door ring is clamped by a component with a fixing function such as a clamping block, and the end of the clamping block is restricted by the clamping groove 351, thereby fixing the door ring.

[0048] Furthermore, 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 rotationally connected to the end of the fixing plate 31 .

[0049] A push plate 37 is slidably mounted on the end of the fixed plate 31 . A guide groove 371 is formed on one side of the push plate 37 . The inner wall of the guide groove 371 is slidably connected to the lower end of the power block 36 .

[0050] Specifically, when the power plate 32 rotates, it cooperates with the second rotating groove 322 to drive the power block 36 to move. Since the lower end of the power block 36 is slidably connected to the inner wall of the guide groove 371, when the power block 36 moves, the push plate 37 is synchronously driven to move.

[0051] Furthermore, an inclined block 372 is provided at one end of the push plate 37 , and a positioning plate 38 is slidably installed at the end of the fixed plate 31 and below the inclined block 372 , and the outer surface of the positioning plate 38 is in contact with one side of the inclined block 372 .

[0052] Specifically, when the push plate 37 moves, the inclined block 372 disposed on its outer surface is synchronously driven to move. When the inclined block 372 moves, it squeezes the positioning plate 38, so that the positioning plate 38 moves outward and restricts the clamping block passing through the clamping groove 351.

[0053] At the same time, one end of the positioning plate 38 is provided with an elastic component such as a spring, which is used to support the positioning plate 38, so that after the inclined block 372 is separated from the positioning plate 38, the positioning plate 38 is pulled to the initial position by the spring to facilitate the next operation.

[0054] The control device may select a single-chip microcomputer as the control end. 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, an input and output device, etc., and is equivalent to a microcomputer.

[0055] Compared with general-purpose microprocessors used in personal computers, it emphasizes self-supply (no external hardware required) and cost saving. Its biggest advantage is that it is small in size and can be placed inside the instrument, but has small storage capacity, simple input and output interfaces, and low functional consumption.

[0056] Embodiment 2 See also Fig. 9 , a door ring welding manufacturing process with a welding joint, comprising the following steps: 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. Grind and clean the welding area appropriately; S3. After the initial welding is completed, the door ring is turned over for secondary welding; S4, inspecting the door ring after welding, and deburring the door ring after welding.

[0057] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions 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 door ring welding manufacturing process with a welding joint, 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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