Welding device and welding method for refrigerator accessory production

Abstract

The invention provides a welding device and a welding method for refrigerator accessory production, and belongs to the technical field of refrigerator accessory welding. Comprising a cabinet body, an operation table is fixedly connected to the top of the cabinet body, a control panel is further fixedly connected to the top of the cabinet body, a fixing piece is fixedly connected to the surface of the operation table, supporting frames are fixedly connected to the surfaces of the two ends of the operation table, and self-adaptive positioning assemblies are slidably connected to the surfaces of the supporting frames; and the self-adaptive positioning assembly is used for concentrically positioning and clamping the copper pipe and is connected with the supporting frame. By arranging the self-adaptive positioning assembly and the constant-force feeding assembly, accurate concentric positioning and clamping of the copper pipe can be achieved, the phenomena of uneven weld joints and insufficient welding are reduced, impurities at the joint of the copper pipe joint are cleaned before the copper pipe is welded, the defects of air holes and cracks are reduced, meanwhile, the device can be adapted to copper pipes of different specifications, and the production efficiency is improved. And the welding consistency and reliability are further improved.

Description

Technical Field

[0001] This invention relates to the field of refrigerator parts welding technology, and in particular to a welding apparatus and welding method for refrigerator parts production. Background Technology

[0002] Refrigerator parts are an indispensable component of the refrigerator's operation and refrigeration system. They mainly include core components such as compressors, condensers, capillary tubes, evaporators, dryer filters, and thermostats, as well as auxiliary parts such as storage boxes, fans, and air duct components. The copper pipes in refrigerator parts need to be welded using welding equipment during production.

[0003] Existing high-frequency welding machines have issues with misalignment between the copper tube and the joint during welding, resulting in uneven welds and incomplete welds. Additionally, the pressure of the welding device is not stable enough, making it difficult to maintain consistent weld quality. Furthermore, impurities are easily generated at the copper tube joint end during welding, leading to defects such as reduced weld strength, porosity, and cracks.

[0004] Therefore, this application provides a welding apparatus and welding method for producing refrigerator parts to meet the requirements. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a welding device and welding method for the production of refrigerator parts, so as to solve the problems of uneven weld and false weld caused by the misalignment of copper tube and joint during welding in the existing high frequency welding machine. At the same time, the welding quality is difficult to be consistent due to the unstable pressure of the welding device. Furthermore, impurities are easily generated at the copper tube joint end during welding, resulting in defects such as reduced welding strength, porosity, and cracks.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A welding device for producing refrigerator parts includes a cabinet, an operating table fixedly connected to the top of the cabinet, a control panel fixedly connected to the top of the cabinet, a fixing component fixedly connected to the surface of the operating table, support frames fixedly connected to both ends of the operating table, and an adaptive positioning component slidably connected to the surface of the support frame. The adaptive positioning component is used for concentric positioning and clamping of copper pipes and is connected to the support frame. An impurity cleaning component is used for cleaning the copper pipe joints and is connected to the adaptive positioning component. A constant force feed component is used to achieve a constant axial upsetting force and is connected to the cabinet.

[0007] Optionally, the adaptive positioning component includes a tapered sleeve fixedly connected to the end of the support frame. One end of the tapered sleeve has multiple sliding grooves inside. One end of the tapered sleeve is slidably connected to a movable frame. The end of the movable frame is rotatably connected to multiple clamping claws. The surface of the clamping claws is fitted with rubber pads.

[0008] Optionally, the other end of the conical sleeve is fixedly connected to an annular fixing disk, the surface of the annular fixing disk is fixedly connected to a plurality of movable grooves, the interior of the movable grooves is slidably connected to a stop block, one end of the stop block is provided with a cylinder, and the surface of the annular fixing disk is rotatably connected to a hollow limiting frame.

[0009] Optionally, the interior of the hollow limiting frame is rotatably connected to a plurality of the abutments, a hydraulic rod is fixedly connected to the surface of the annular fixed plate, a fixed rod is fixedly connected to the output end of the hydraulic rod, a slider is provided inside the fixed rod, and the other end of the fixed rod is fixedly connected to the hollow limiting frame.

[0010] Optionally, the impurity cleaning component includes an operating chamber fixedly connected to the end of a conical sleeve, a dust guide pipe fixedly connected to one end of the operating chamber, a dust collection chamber fixedly connected to the other end of the dust guide pipe, a negative pressure fan fixedly connected to the end of the dust collection chamber, and an output pipe fixedly connected to both ends of the inner wall of the operating chamber.

[0011] Optionally, a vacuum cleaner head is fixedly connected to the ends of the two output tubes, and a telescopic rod is fixedly connected to the inner wall of the operating chamber. A first spring is sleeved on the surface of the telescopic rod, and a cleaning drum is fixedly attached to the end of the telescopic rod.

[0012] Optionally, the constant force feed assembly includes a base fixedly connected to the top of the cabinet, a lifting frame movably connected to the top of the base, and a linear guide rail movably connected to the top of the lifting frame.

[0013] Optionally, a welding gun is slidably connected inside the linear guide rail, and an arc-shaped toothed frame is fixedly connected to the output end of the welding gun. Gears are meshed at both ends of the arc-shaped toothed frame, and heating plates are sleeved at both ends of the arc-shaped toothed frame.

[0014] Optionally, the heating plate is rotatably connected to the gear, a threaded rod is fixedly connected to the end of the arc-shaped toothed frame, a second spring is sleeved on the surface of the threaded rod, a top rod is fixedly connected to the other end of the second spring, and an arc-shaped top plate is fixedly connected to the end of the top rod.

[0015] This application also provides a welding method for a welding apparatus used in the production of refrigerator parts, comprising the following steps: S1: Place the two copper pipes to be welded from the conical sleeve, then drag the conical sleeve to make the moving frame move the clamping jaws inward to clamp the copper pipes, and rotate the hollow limit frame to make the abutment block press against the copper pipes. S2: Then, as the copper tubes move towards each other, the cleaning drum begins to clean the ends of the copper tubes. The vacuum head then collects the cleaned dust and transports it to the dust collection chamber for storage, while continuing to bring the two copper tubes closer together. S3: Then connect the two copper pipes together after they come into contact with each other. Then put solder on the connection end of the two copper pipe joints, wrap the welding wire around it, and apply flux to the outer wall of the copper pipe connection end. S4: Finally, adjust the gap between the heating plates according to the specifications of the copper pipe, and slowly move the welding gun to the copper pipe joint through the linear guide rail. After the push rod contacts the copper pipe and maintains a constant pressure, stop moving the welding gun. The heating plate heats and melts the solder at the copper pipe joint to fill the joint between the copper pipes.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects: In the above solution, by setting an adaptive positioning component, the copper tube can be precisely and concentrically positioned and clamped by the cooperation of parts such as conical sleeve, clamping claws, and abutment blocks. Multiple clamping claws simultaneously close and clamp the copper tube, and with the auxiliary limiting of the abutment blocks, the double-headed double-positioning clamping provides stability while effectively avoiding the problem of misalignment between the copper tube and the joint during welding, reducing uneven weld seams and incomplete welds, improving the coaxiality and connection stability of the welded joint, and the rubber pads on the surface of the clamping claws can also protect the surface of the copper tube during clamping to prevent scratches or damage.

[0017] By incorporating an impurity cleaning component, the cleaning drum, suction head, and dust collection chamber work together to remove impurities from the copper pipe joint before welding. The cleaning drum makes close contact with the copper pipe surface to brush away impurities, while the suction head uses the suction force generated by the negative pressure fan to collect impurities and transport them to the dust collection chamber for storage. This prevents impurities from remaining at the copper pipe joint, reducing defects such as weld strength, porosity, and cracks, ensuring the quality and structural strength of the welded joint, and preventing secondary pollution caused by impurities.

[0018] By setting up a constant force feed assembly, and utilizing the coordinated operation of components such as the second spring, push rod, and arc-shaped top plate, a constant axial forging force can be provided for the welding process. After the push rod contacts the copper tube, the elastic characteristics of the second spring maintain a stable pressure, avoiding welding pressure fluctuations and ensuring uniform welding quality. The heating plate can adjust the gap through gears to adapt to copper tubes of different specifications. In conjunction with the linear guide rail, it drives the welding gun to move precisely, allowing the solder to melt and fill the joint evenly, further improving the consistency and reliability of the welding. Attached Figure Description

[0019] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the invention and, together with the specification, further serve to explain the principles of the invention and enable those skilled in the art to practice and use the invention.

[0020] Figure 1 A first-person perspective 3D structural diagram of a welding device used in the production of refrigerator parts; Figure 2 A second-view three-dimensional structural diagram of a welding device used in the production of refrigerator parts; Figure 3 A three-dimensional structural diagram of the adaptive positioning component and the impurity cleaning component working together; Figure 4 A schematic diagram of the three-dimensional structure of the conical sleeve and clamping jaws in action; Figure 5 A schematic diagram of the three-dimensional structure of the adaptive positioning component; Figure 6 A schematic diagram of the three-dimensional structure of the movable groove and the stop block; Figure 7 A three-dimensional structural diagram of the fit between the conical sleeve and the operating cavity; Figure 8 A three-dimensional structural diagram of the dust guide tube and the operating chamber in combination; Figure 9 A three-dimensional structural diagram of the output pipe and the suction head in conjunction; Figure 10 A schematic diagram of the three-dimensional structure of the linear guide rail and welding gun in combination; Figure 11 This is a schematic diagram of the three-dimensional structure of the constant force feed component; Figure 12 for Figure 11 Enlarged 3D structural diagram at point B.

[0021] Figure label: 1. Cabinet; 2. Operating table; 3. Control panel; 4. Fixing components; 5. Support frame; 6. Adaptive positioning assembly; 61. Conical sleeve; 62. Moving frame; 63. Clamping claw; 64. Annular fixed plate; 65. Movable groove; 66. Abutment block; 67. Hollowed-out limit frame; 68. Hydraulic rod; 69. Fixed rod; 7. Impurity cleaning assembly; 71. Dust collection chamber; 72. Negative pressure fan; 73. Dust guide pipe; 74. Operating chamber; 75. Output pipe; 76. Suction head; 77. Telescopic rod; 78. First spring; 79. Cleaning drum; 8. Constant force feed assembly; 81. Base; 82. Lifting frame; 83. Linear guide rail; 84. Welding gun; 85. Arc-shaped toothed frame; 86. Heating plate; 87. Gear; 88. Threaded rod; 89. Second spring; 810. Top rod; 811. Arc-shaped top plate. Detailed Implementation

[0022] The welding apparatus and welding method for producing refrigerator parts provided by the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should also be noted that, in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0023] like Figures 1 to 12 As shown, an embodiment of the present invention provides a welding device for refrigerator parts production, including a cabinet 1, an operating table 2 fixedly connected to the top of the cabinet 1, a control panel 3 fixedly connected to the top of the cabinet 1, a fixing member 4 fixedly connected to the surface of the operating table 2, support frames 5 fixedly connected to both ends of the operating table 2, an adaptive positioning component 6 slidably connected to the surface of the support frame 5, the adaptive positioning component 6 being used for concentric positioning and clamping of copper tubes, and the adaptive positioning component 6 being connected to the support frame 5; an impurity cleaning component 7, used for cleaning the copper tube joints, and the impurity cleaning component 7 being connected to the adaptive positioning component 6; and a constant force feed component 8, used for achieving a constant axial upsetting force, and the constant force feed component 8 being connected to the cabinet 1.

[0024] As an implementation method in this embodiment, such as Figures 3 to 6 As shown, the adaptive positioning component 6 includes a conical sleeve 61 fixedly connected to the end of the support frame 5. One end of the conical sleeve 61 has multiple sliding grooves inside. A movable frame 62 is slidably connected to one end of the conical sleeve 61. Multiple clamping claws 63 are rotatably connected to the end of the movable frame 62. Rubber pads are installed on the surface of the clamping claws 63. An annular fixed disk 64 is fixedly connected to the other end of the conical sleeve 61. Multiple movable grooves 65 are fixedly connected to the surface of the annular fixed disk 64. A stop block 66 is slidably connected inside the movable groove 65. One end of the stop block 66 has a cylindrical surface. A hollowed-out limiting frame 67 is rotatably connected to the surface of the annular fixed disk 64. The interior of the hollowed-out limiting frame 67 is rotatably connected to the multiple stop blocks 66. The annular fixed disk 64... A hydraulic rod 68 is fixedly connected to the surface of the device. A fixed rod 69 is fixedly connected to the output end of the hydraulic rod 68. A slider is installed inside the fixed rod 69. The other end of the fixed rod 69 is fixedly connected to the hollow limit frame 67. With the cooperation of parts such as the conical sleeve 61, clamping claws 63, and abutment blocks 66, the copper tube can be accurately and concentrically positioned and clamped. Multiple clamping claws 63 simultaneously close and clamp the copper tube. With the auxiliary limiting of the abutment blocks 66, the double-headed double-positioning clamping provides stability and effectively avoids the problem of misalignment between the copper tube and the joint during welding. It reduces uneven weld seam and incomplete weld phenomenon, improves the coaxiality and connection stability of the welded joint, and the rubber pad on the surface of the clamping claws 63 can also protect the surface of the copper tube during the clamping process to prevent scratches or damage.

[0025] As an implementation method in this embodiment, such as Figures 4 to 9 As shown, the impurity cleaning assembly 7 includes an operating chamber 74 fixedly connected to the end of the conical sleeve 61. A dust guide pipe 73 is fixedly connected to one end of the operating chamber 74, and a dust collection chamber 71 is fixedly connected to the other end of the dust guide pipe 73. A negative pressure fan 72 is fixedly connected to the end of the dust collection chamber 71. Output pipes 75 are fixedly connected to both ends of the inner wall of the operating chamber 74, and suction heads 76 are fixedly connected to the ends of the two output pipes 75. A telescopic rod 77 is also fixedly connected to the inner wall of the operating chamber 74. A first spring 78 is sleeved on the surface of the telescopic rod 77. The end of the telescopic rod 77... The cleaning drum 79 is fixedly connected. By cooperating with other parts such as the cleaning drum 79, the suction head 76, and the dust collection chamber 71, impurities at the copper pipe joint are cleaned before the copper pipe is welded. The cleaning drum 79 makes close contact with the surface of the copper pipe to remove impurities. The suction head 76 collects impurities in a timely manner through the suction generated by the negative pressure fan 72 and transports them to the dust collection chamber 71 for storage. This prevents impurities from remaining at the copper pipe joint, reduces the occurrence of defects such as weld strength, porosity, and cracks, and ensures the quality and structural strength of the welded joint. At the same time, it avoids secondary pollution caused by impurities.

[0026] As an implementation method in this embodiment, such as Figures 10 to 12 As shown, the constant force feed assembly 8 includes a base 81 fixedly connected to the top of the cabinet 1. A lifting frame 82 is movably connected to the top of the base 81. A linear guide rail 83 is movably connected to the top of the lifting frame 82. A welding gun 84 is slidably connected inside the linear guide rail 83. An arc-shaped toothed frame 85 is fixedly connected to the output end of the welding gun 84. Gears 87 are meshed at both ends of the arc-shaped toothed frame 85. Heating plates 86 are sleeved at both ends of the arc-shaped toothed frame 85. The heating plates 86 are rotatably connected to the gears 87. A threaded rod 88 is fixedly connected to the end of the arc-shaped toothed frame 85. A second spring 89 is sleeved on the surface of the threaded rod 88. The other end of 9 is fixedly connected to a push rod 810, and the end of the push rod 810 is fixedly connected to an arc-shaped top plate 811. With the coordinated cooperation of the second spring 89, the push rod 810, the arc-shaped top plate 811 and other parts, a constant axial forging force can be provided for the welding process. After the push rod 810 contacts the copper tube, the elasticity of the second spring 89 maintains a stable pressure, avoids welding pressure fluctuations, and ensures uniform welding quality. The heating plate 86 can adjust the gap through the gear 87 to adapt to copper tubes of different specifications. With the help of the linear guide rail 83, it drives the welding gun 84 to move precisely, so that the solder melts and fills the joint evenly, further improving the consistency and reliability of the welding.

[0027] The working principle of the technical solution provided by this invention is as follows: In use, firstly, insert the two copper tubes to be welded into one end of the self-adaptive positioning components 6 at both ends of the operating table 2. After the copper tubes are inserted into the conical sleeve 61, move the conical sleeve 61 on the support frame 5. As the conical sleeve 61 moves, the sliding frame 62, which is slidably connected to the conical sleeve 61, begins to slide towards the other end of the conical sleeve 61. Then, the sliding frame 62 drives the clamping claws 63 on its surface to begin to retract inward. As multiple clamping claws 63 retract synchronously, the ends of the clamping claws 63 gradually come into contact with the surface of the copper tube. Then, the clamping claws 63 begin to clamp the copper tube and drive the... The copper tube continues to move inside the conical sleeve 61. After the moving frame 62 moves to the turning point of the conical sleeve 61, the movement of the copper tube stops. At this time, the hydraulic rod 68 starts to drive the fixed rod 69 to rotate the hollow limit frame 67. As the hollow limit frame 67 rotates, the abutment 66 connected inside begins to slide in the movable groove 65 on the fixed annular fixed plate 64. As the multiple abutment blocks 66 move synchronously, the axis around which the multiple abutment blocks 66 are surrounded gradually becomes smaller and gradually comes into contact with the surface of the copper tube, so that the position of the axis of the copper tube coincides with the position of the multiple abutment blocks 66.

[0028] When the copper tube passes through the conical sleeve 61, the impurity cleaning component 7 starts to operate. First, the cleaning drum 79 rotates and comes into contact with the moving copper tube. At this time, the compressed cleaning drum 79 is in close contact with the surface of the copper tube. Simultaneously, the pressure of the cleaning drum 79 is fed back to the telescopic rod 77 to retract, and the first spring 78 sleeved on the surface of the telescopic rod 77 retracts synchronously to protect the copper tube from mechanical damage. Then, the negative pressure fan 72 fixedly connected to the end of the dust collection chamber 71 starts to rotate. At this time, the suction is delivered from the dust guide pipe 73 to the output pipe 75. Then, the impurities brushed off by the cleaning drum 79 are sucked into the operating chamber 74 through the suction head 76, and then transported to the dust collection chamber 71 through the dust guide pipe 73 for collection to avoid secondary pollution.

[0029] After the copper tubes are cleaned and connected, solder is applied to the connection point. Then, the constant force feed assembly 8 is driven. At this time, the lifting height of the top lifting frame 82 of the base 81 is adjusted so that the welding gun 84 and the copper tube are on the same axis. Then, by adjusting the gear 87 installed at the end of the heating plate 86, the heating plate 86 moves on the arc-shaped toothed frame 85, changing the distance between the two heating plates 86. This allows the welding device with the changed heating plates 86 to adapt to copper tubes of different specifications, improving welding compatibility. Then, the welding gun 84 is driven to move towards the copper tube connection point in the linear guide rail 83. Subsequently, the arc-shaped top plate 811 at the end of the push rod 810 first contacts the end of the copper tube connection point. Then, the arc-shaped top plate 811 drives the push rod 810 to push the second spring 89 to contract on the threaded rod 88. At this time, the arc-shaped top plate 811 applies initial pre-pressure to the surface of the copper tube to prevent the pressure from becoming constant when the copper tube end begins to melt, thus preventing sudden pressure changes. At the moment when the heating ends and the material is at its softest, the two arc-shaped top plates 811 always support the copper tube, avoiding micro-gaps caused by the shrinkage of the material during melting, thus making the weld more compact.

[0030] This application also provides a welding method for a welding apparatus used in the production of refrigerator parts, comprising the following steps: S1: Place the two copper pipes to be welded from the conical sleeve 61 respectively, then drag the conical sleeve 61 to make the moving frame 62 drive the clamping claw 63 to retract inward to clamp the copper pipes, and rotate the hollow limit frame 67 to make the abutment block 66 abut against the copper pipes. S2: Then, while the copper tubes move towards each other, the cleaning drum 79 begins to clean the ends of the copper tubes, and then the vacuum head 76 collects the cleaned dust and transports it to the dust collection chamber 71 for storage, and continues to bring the two copper tubes closer together. S3: Then connect the two copper pipes together after they come into contact with each other. Then put solder on the connection end of the two copper pipe joints, wrap the welding wire around it, and apply flux to the outer wall of the copper pipe connection end. S4: Finally, adjust the gap between the heating plates 86 according to the specifications of the copper pipe, and slowly move the welding gun 84 to the copper pipe joint through the linear guide rail 83. The push rod 810 first contacts the copper pipe to maintain a constant pressure and then stops the movement of the welding gun 84. The heating plate 86 heats and melts the solder at the copper pipe joint to fill the joint between the copper pipes.

[0031] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0032] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A welding apparatus for producing refrigerator parts, comprising a cabinet (1), characterized in that, The top of the cabinet (1) is fixedly connected to an operating table (2), and the top of the cabinet (1) is also fixedly connected to a control panel (3). The surface of the operating table (2) is fixedly connected to a fastener (4), and the two ends of the operating table (2) are fixedly connected to a support frame (5). The surface of the support frame (5) is slidably connected to an adaptive positioning component (6). The adaptive positioning component (6) is used to concentrically position and clamp the copper tube. The adaptive positioning component (6) is connected to the support frame (5). Impurity cleaning component (7), which is used to clean the copper pipe joint, is connected to the adaptive positioning component (6); A constant force feed assembly (8) is used to achieve a constant axial upsetting force. The constant force feed assembly (8) is connected to the cabinet (1).

2. The welding apparatus for producing refrigerator parts according to claim 1, characterized in that, The adaptive positioning component (6) includes a conical sleeve (61) fixedly connected to the end of the support frame (5). One end of the conical sleeve (61) has multiple sliding grooves. One end of the conical sleeve (61) is slidably connected to a movable frame (62). The end of the movable frame (62) is rotatably connected to multiple clamping claws (63). The surface of the clamping claws (63) is fitted with rubber pads.

3. The welding apparatus for producing refrigerator parts according to claim 2, characterized in that, The other end of the conical sleeve (61) is fixedly connected to an annular fixed disk (64). The surface of the annular fixed disk (64) is fixedly connected to a plurality of movable grooves (65). The interior of the movable grooves (65) is slidably connected to a stop block (66). One end of the stop block (66) is provided with a cylinder. The surface of the annular fixed disk (64) is rotatably connected to a hollow limit frame (67).

4. The welding apparatus for producing refrigerator parts according to claim 3, characterized in that, The interior of the hollow limit frame (67) is rotatably connected to multiple blocks (66). A hydraulic rod (68) is fixedly connected to the surface of the annular fixed plate (64). A fixed rod (69) is fixedly connected to the output end of the hydraulic rod (68). A slider is provided inside the fixed rod (69). The other end of the fixed rod (69) is fixedly connected to the hollow limit frame (67).

5. The welding apparatus for producing refrigerator parts according to claim 4, characterized in that, The impurity cleaning component (7) includes an operating chamber (74) fixedly connected to the end of a conical sleeve (61). One end of the operating chamber (74) is fixedly connected to a dust guide pipe (73), and the other end of the dust guide pipe (73) is fixedly connected to a dust collection chamber (71). The end of the dust collection chamber (71) is fixedly connected to a negative pressure fan (72), and both ends of the inner wall of the operating chamber (74) are fixedly connected to an output pipe (75).

6. The welding apparatus for producing refrigerator parts according to claim 5, characterized in that, The ends of the two output tubes (75) are fixedly connected to a vacuum head (76), and the inner wall of the operating cavity (74) is also fixedly connected to a telescopic rod (77). A first spring (78) is sleeved on the surface of the telescopic rod (77), and a cleaning drum (79) is fixedly attached to the end of the telescopic rod (77).

7. The welding apparatus for producing refrigerator parts according to claim 6, characterized in that, The constant force feed assembly (8) includes a base (81) fixedly connected to the top of the cabinet (1), a lifting frame (82) movably connected to the top of the base (81), and a linear guide rail (83) movably connected to the top of the lifting frame (82).

8. The welding apparatus for producing refrigerator parts according to claim 7, characterized in that, The linear guide rail (83) is internally slidably connected to a welding gun (84), the output end of the welding gun (84) is fixedly connected to an arc-shaped toothed frame (85), the two ends of the arc-shaped toothed frame (85) are meshed with gears (87), and the two ends of the arc-shaped toothed frame (85) are sleeved with heating plates (86).

9. The welding apparatus for producing refrigerator parts according to claim 8, characterized in that, The heating plate (86) is rotatably connected to the gear (87), and the end of the arc-shaped toothed frame (85) is fixedly connected to a threaded rod (88). A second spring (89) is sleeved on the surface of the threaded rod (88), and the other end of the second spring (89) is fixedly connected to a top rod (810). The end of the top rod (810) is fixedly connected to an arc-shaped top plate (811).

10. A welding method for manufacturing refrigerator parts, applicable to the welding apparatus for manufacturing refrigerator parts as described in claim 9, characterized in that, The method includes the following steps: S1: Take the two copper pipes to be welded from the conical sleeve (61) respectively, and then drag the conical sleeve (61) to make the moving frame (62) drive the clamping claw (63) to retract inward to clamp the copper pipes. Rotate the hollow limit frame (67) to make the abutment (66) abut against the copper pipes. S2: Then, while the copper tubes move towards each other, the cleaning drum (79) begins to clean the ends of the copper tubes, and then the vacuum head (76) collects the cleaned dust and transports it to the dust collection chamber (71) for storage, and continues to bring the two copper tubes closer together. S3: Then connect the two copper pipes together after they come into contact with each other. Then put solder on the connection end of the two copper pipe joints, wrap the welding wire around it, and apply flux to the outer wall of the copper pipe connection end. S4: Finally, adjust the gap between the heating plates (86) according to the specifications of the copper pipe, and use the linear guide rail (83) to slowly move the welding gun (84) to the copper pipe joint. The push rod (810) first contacts the copper pipe to maintain a constant pressure and then stops the movement of the welding gun (84). The heating plate (86) heats and melts the solder at the copper pipe joint to fill the joint between the copper pipes.

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