Copper pipe welding equipment for compressor of refrigeration cabinet

Abstract

The invention discloses refrigeration cabinet compressor copper pipe welding equipment, and relates to the technical field of compressor copper pipe welding. The refrigerating cabinet compressor copper pipe welding equipment comprises a working table, a feeding area, a wire winding area, a welding area and a discharging area are sequentially arranged on the working table in the circumferential direction, the fixing sleeve is fixed to the middle of the working table, and a guide rail is arranged on the fixing sleeve. Through cooperation of four stations of the feeding area, the wire winding area, the welding area and the discharging area which are distributed in the circumferential direction and synchronous rotation driving of the rotating sleeve and the center column, the whole processes of inserting connection, wire winding, welding and discharging are automatically completed after a copper pipe is clamped at a time, and the high-low position design of the guide rail forcibly controls the lifting action of the connecting arm; the first copper pipe is accurately inserted into the second copper pipe in the rotating process, the process interruption caused by manual step-by-step operation in the traditional process is thoroughly eliminated, and the production efficiency and the process continuity are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of copper tube welding technology for compressors, specifically to equipment for welding copper tubes for refrigeration cabinet compressors. Background Technology

[0002] As the core component of the refrigeration system, the compressor draws refrigerant from the low-pressure area and compresses it to the high-pressure area for cooling and condensation through copper pipes, achieving efficient heat transfer to the air through heat sinks. In this process, the refrigeration copper pipes play a crucial role in medium conduction. However, when welding copper pipes, operators usually hold a welding torch and heat the copper pipe joint on one side while manually filling the filler metal for welding. Although this method is simple to operate, it severely restricts the accuracy and reliability of compressor copper pipe welding.

[0003] Chinese patent CN116871809A discloses a copper tube welding device for a refrigeration wine cabinet compressor. During use, this device can quickly move the copper tube towards the welding position. During this movement, a positioning mechanism moves the copper tube in the clamping parts towards the positioning plate, ultimately bringing one end of the copper tube into contact with the positioning plate. This positioning allows the copper tube to reach a set position, controlling the insertion depth during subsequent copper tube welding and ensuring the overall height of the welded copper tubes, thereby improving the accuracy of the copper tube insertion into the compressor housing at the designated position.

[0004] While the above structure has a certain degree of automation, in actual use, feeding, positioning, welding, and unloading all require step-by-step operation. Each step requires stopping rotation and waiting for manual intervention. This fragmented process leads to low efficiency, and manual intervention increases the risk of quality fluctuations. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a copper tube welding device for refrigeration cabinet compressors, which solves the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a copper tube welding device for a refrigeration cabinet compressor, comprising a worktable, wherein a feeding area, a wire winding area, a welding area, and a unloading area are sequentially arranged circumferentially on the worktable; further comprising: a fixed sleeve, fixed in the center of the worktable, having a guide rail on it, wherein the side of the guide rail near the feeding area is a high-position area, and the side of the guide rail near the wire winding area, welding area, and unloading area is a low-position area; a rotating sleeve, rotatably fitted onto the outside of the fixed sleeve; a central column, located in the center of the fixed sleeve and rotating synchronously with the rotating sleeve, having a connecting arm on its outer side, the connecting arm being rotatable along the center... The core column slides axially, and its lower end is provided with a connecting slider that slides with the guide rail, so that when the connecting arm rotates with the core column and slides along the guide rail, its height is controlled by the contour of the guide rail; clamping members are fixed on the outside of the rotating sleeve and the other end of the connecting arm, respectively used for coaxial fixation of the second copper tube and the first copper tube, wherein when the connecting arm slides from the high position area to the low position area, the first copper tube and the second copper tube on the two clamping members are inserted into each other; a wire winding assembly is provided in the wire winding area, used for winding brazing material around the connection between the second copper tube and the first copper tube; a welding assembly is provided in the welding area, used for brazing the connection between the second copper tube and the first copper tube.

[0007] Furthermore, the wire winding assembly includes: a wire outlet sleeve disposed within the wire winding area, with its wire outlet end near the connection between the second copper tube and the first copper tube; a first notch ring disposed within the wire winding area, which can slide along the axial direction of the second copper tube, with a sliding notch ring slidably connected to its inner side, the arc of the sliding notch ring being greater than the arc corresponding to the notch on the first notch ring; a telescopic rod fixed to the sliding notch ring, with a gripper at its telescopic end; and a transmission assembly disposed on the first notch ring, used to drive the sliding notch ring to rotate, so that the gripper clamps one end of the welding wire and rotates one revolution along the connection between the first copper tube and the second copper tube.

[0008] Furthermore, the transmission assembly includes: connecting shafts symmetrically mounted on the first notched ring, wherein the arc angles corresponding to the center of the two connecting shafts and the first notched ring are greater than the arc angles corresponding to the notches on the sliding notched ring; an incomplete gear ring fixed to the bottom of the sliding notched ring and having the same arc angle as the sliding notched ring; a pinion fixed to the connecting shafts and meshing with the incomplete gear ring; and a synchronous transmission component disposed on the first notched ring for driving the two pinions to rotate synchronously in the same direction.

[0009] Furthermore, the welding assembly includes: a second notched ring disposed within the welding zone and slidable along the axial direction of the second copper tube; and a brazing heater disposed inside the second notched ring for heating and melting the brazing material.

[0010] Furthermore, it also includes: a top plate, installed at the wire winding area and welding area, on which a lifting assembly is provided for driving the first notched ring or the second notched ring to move axially along the second copper tube; a moving block, fixed to the lower end of the top plate and slidable on the worktable surface, with its end away from the top plate being semi-circular; a return spring, installed at one end of the top plate and the moving block, for driving the top plate and the moving block to move toward the rotating sleeve; and four bosses, fixed to the outside of the rotating sleeve and distributed circumferentially along the rotating sleeve, with a groove formed between two adjacent rotating sleeves, the grooves slidingly engaging with the moving block to allow the moving block to slide toward or away from the rotating sleeve, so that the first notched ring and the second notched ring can accommodate or disengage from the connection between the first copper tube and the second copper tube.

[0011] Furthermore, the clamping component includes: an inner sleeve, fixed to the outside of the rotating sleeve and the other end of the connecting arm, with the centers of the two inner sleeves on the same vertical line; a through groove, provided on the side wall of the inner sleeve, in which a crank is rotatably mounted, one end of the crank extending into the interior of the inner sleeve and having a clamping post; an outer sleeve, rotatably mounted on the outside of the inner sleeve, its inner wall hinged to the other end of the crank, and its outer side having a first rack; and a spring spring, provided at the gap between the outer sleeve and the inner sleeve, for driving the outer sleeve to rotate, so that the clamping posts move closer to each other to clamp the copper tube.

[0012] Furthermore, it also includes: a second rack and a third rack; the second rack is located in the feeding area and the winding area, and when the clamping member used to fix the second copper tube moves below it, it engages with the first rack to drive the outer sleeve to rotate, so that the clamping posts move away from each other; the third rack is located in the feeding area and the winding area, and when the clamping member used to fix the first copper tube moves above it, it engages with the first rack to drive the outer sleeve to rotate, so that the clamping posts move away from each other; wherein, the second rack and the third rack are not on the same vertical line in the feeding area, and the second rack and the third rack are on the same vertical line in the winding area.

[0013] Furthermore, it also includes: a first support plate, located in the feeding area and below the second rack, which can slide along the axial direction of the second copper tube and is used for bottom support when the second copper tube is fed; and a second support plate, located in the feeding area and below the third rack, which can slide along the axial direction of the second copper tube and is used for bottom support when the first copper tube is fed.

[0014] Furthermore, a rotating shaft is fixed to the lower surface of the central column, and driven gears are installed on both the rotating shaft and the rotating sleeve. A first motor is fixed to the bottom of the worktable, and a driving gear is installed at the output end of the first motor. The driving gear meshes with the driven gear.

[0015] Furthermore, the outer side of the central column is provided with a sliding groove along the axial direction, and the connecting arm is slidably connected to the sliding groove.

[0016] The present invention has the following beneficial effects: (1) The copper tube welding equipment for the refrigeration cabinet compressor, through the coordinated operation of four stations in the circumferentially distributed feeding area, wire winding area, welding area and unloading area, combined with the synchronous rotation drive of the rotating sleeve and the central column, enables the copper tube to automatically complete the entire process of insertion, wire winding, welding and unloading after a single clamping. The high and low position design of the guide rail forces the lifting and lowering action of the connecting arm, so that the first copper tube is accurately inserted into the second copper tube during the rotation process, completely eliminating the process interruption caused by manual step-by-step operation in the traditional process, and significantly improving production efficiency and process continuity.

[0017] (2) The copper tube welding equipment for the refrigeration cabinet compressor achieves 360° rotation through the cooperation of the first notched ring and the sliding notched ring under the action of incomplete gear ring transmission. The driving claw drives the welding wire to wrap around the copper tube connection completely once. The physical properties of the stepped structure formed after the copper tube is inserted prevent the welding wire from slipping off, thus solving the problems of stacking, loosening and falling off caused by traditional manual winding.

[0018] (3) The copper tube welding equipment for the refrigeration cabinet compressor, through the forced control of the height of the connecting arm by the guide rail contour, combined with the axial limit of the central column slide groove, ensures that the first copper tube and the second copper tube always maintain coaxiality during the insertion process. The notch ring of the winding wire and the welding component is quickly positioned by the boss and groove mechanism, so that the brazing heater accurately covers the weld area, realizes uniform ring heating, and fully utilizes capillary penetration in the non-offset insertion gap, which significantly improves the density of the weld.

[0019] (4) The copper tube welding equipment for the refrigeration cabinet compressor temporarily supports the copper tube during the feeding stage through the adjustable height support plate, eliminating the risk of falling due to the delay of the clamping action. The first notch ring and the first notch ring have a fault tolerance distance greater than the maximum pipe diameter. Combined with the automatic start and stop control of the positioning seat contact switch, it prevents the equipment from malfunctioning and damaging the copper tube. The clamping mechanism adapts to different pipe diameters through the lever amplification effect of the crank. The lifting component adjusts the height of the notch ring to adapt to diverse workpieces and improves the application scenarios of the equipment.

[0020] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 In this invention Figure 1 Top view; Figure 3 This is a schematic diagram of the structure of the clamping component when it is in motion in this invention; Figure 4 In this invention Figure 3 Top view; Figure 5This is a schematic diagram of the rotating sleeve and central column transmission structure in this invention; Figure 6 This is a schematic diagram of the connection structure between the connecting arm and the guide rail in this invention; Figure 7 This is a schematic diagram of the guide rail structure in this invention; Figure 8 This is a schematic diagram of the mounting structure of the rotating shaft in this invention; Figure 9 This is a schematic diagram of the internal structure of the clamping component in this invention; Figure 10 This is a schematic diagram of the partitioned structure of the workbench in this invention; Figure 11 In this invention Figure 10 Another perspective view; Figure 12 In this invention Figure 10 Top view; Figure 13 This is a schematic diagram of the structure of the first notched ring in this invention; Figure 14 This is a schematic diagram of the driving structure of the sliding notched ring in this invention.

[0022] In the diagram: 1. Base; 2. Workbench; 3. Fixed sleeve; 4. Rotating sleeve; 5. Central column; 6. Feeding area; 7. Wire winding area; 8. Welding area; 9. Unloading area; 10. First copper tube; 11. Second copper tube; 12. Outer sleeve; 13. Inner sleeve; 14. First rack; 15. Guide rail; 16. Wire delivery gun sleeve; 17. Top plate; 18. First notched ring; 19. Second notched ring; 20. Brazing heater; 21. Return spring; 22. Boss; 23. Second rack; 24. Third rack; 25. First support. 26. Second support plate; 27. Groove; 28. Moving block; 29. ​​Connecting arm; 30. Slide groove; 31. Lead screw; 32. Guide rod; 33. Rotating shaft; 34. First motor; 35. Driving gear; 36. Driven gear; 37. Connecting slider; 38. Clamping column; 39. Crank; 40. Through groove; 41. Spring spring; 42. Sliding notch ring; 43. Telescopic rod; 44. Gripper; 45. Synchronous pulley; 46. Second motor; 47. Synchronous belt; 48. Connecting shaft; 49. Pinion; 50. Incomplete gear ring. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0025] The following is based on Figure 1 - Figure 14 This invention describes the copper tube welding equipment for refrigeration cabinet compressors provided in an embodiment of the invention.

[0026] Please see Figure 1 - Figure 14 This invention provides a technical solution: a copper tube welding device for a refrigeration cabinet compressor, including a worktable 2, a base 1 at the bottom of the worktable 2, and a feeding area 6, a wire winding area 7, a welding area 8, and a unloading area 9 arranged sequentially along the circumference of the worktable 2. It also includes a fixing sleeve 3, which is fixed to the middle of the worktable 2. The sleeve 3 has a hollow internal structure and a guide rail 15 at its upper end. The side of the guide rail 15 closest to the feeding area 6 is a high-level area, and the side of the guide rail 15 closest to the wire winding area 7, the welding area 8, and the unloading area 9 is a low-level area. The device also includes a rotating sleeve 4 and a central column 5. The rotating sleeve 4 is rotatably sleeved on the outside of the fixed sleeve 3. The central column 5 is located in the middle of the fixed sleeve 3 and rotates synchronously with the rotating sleeve 4. A connecting arm 29 is provided on its outer side. The connecting arm 29 can slide along the axial direction of the central column 5. A connecting slider 37 that forms a sliding fit with the guide rail 15 is provided at its lower end. When the connecting arm 29 rotates with the central column 5 and slides along the guide rail 15, its height is controlled by the contour of the guide rail 15. It should be noted that the side wall of the guide rail 15 is provided with a limiting rail that is adapted to it. The limiting rail is slidably connected with the connecting slider 37 to improve the stability of the connecting arm 29 during movement.

[0027] In addition, the copper tube welding equipment for the refrigeration cabinet compressor provided in this embodiment also includes clamping components, a wire winding assembly, and a welding assembly. The clamping components are fixed to the outside of the rotating sleeve 4 and the other end of the connecting arm 29, respectively, for coaxial fixing of the second copper tube 11 and the first copper tube 10. When the connecting arm 29 slides from the high position area to the low position area, the first copper tube 10 and the second copper tube 11 on the two clamping components approach each other and are inserted. The wire winding assembly is located at the wire winding area 7 and is used to wind the brazing material around the connection between the second copper tube 11 and the first copper tube 10. It should be noted that the brazing material here is preferably... The welding wire is selected, preferably with the outer diameter of the first copper tube 10 being smaller than that of the second copper tube 11. After the welding wire is wound around the connection between the first copper tube 10 and the second copper tube 11, the difference in outer diameter causes an annular step to be formed at the connection, so as to prevent the welding wire from falling along the copper tube after being wound. In addition, the welding assembly is set at the welding area 8 for brazing the connection between the second copper tube 11 and the first copper tube 10. During welding, the welding wire melts and is drawn into and fills the gap between the second copper tube 11 and the first copper tube 10 by means of capillary action. The liquid brazing filler metal diffuses and dissolves with the workpiece metal, and after condensation, the copper tube welding is completed.

[0028] like Figure 3 , Figure 4 , Figure 13 and Figure 14 As shown, the wire winding assembly provided in this embodiment includes a wire outlet sleeve 16, which is located in the wire winding area 7. Its wire outlet end is close to the connection between the second copper tube 11 and the first copper tube 10, forming a wire outlet fixing point. Preferably, the wire outlet sleeve 16 can move along its own axis to make way when the subsequent clamp 44 rotates. A cutter can be provided at the wire outlet end of the wire outlet sleeve 16 to cut the welding wire when the wire outlet sleeve 16 makes way.

[0029] The wire winding assembly provided in this embodiment also includes a first notched ring 18 and a telescopic rod 43. The first notched ring 18 is located in the wire winding area 7. The minimum spacing corresponding to its notch is greater than the maximum pipe diameter clamped by the clamping member, and it can slide along the axial direction of the second copper pipe 11. A sliding notched ring 42 is slidably connected to its inner side. The curvature of the sliding notched ring 42 is greater than the curvature corresponding to the notch on the first notched ring 18, so as to ensure the stability of the sliding notched ring 42 when sliding inside the first notched ring 18. In addition, the telescopic rod 43 is fixed on the sliding notched ring 42, and its telescopic end is provided with a claw 44 for clamping the welding wire. A transmission component is provided on the first notched ring 18. The transmission component is used to drive the sliding notched ring 42 to rotate, so that the claw 44 clamps one end of the welding wire and rotates one revolution along the connection between the first copper pipe 10 and the second copper pipe 11.

[0030] like Figure 13 and Figure 14As shown, the transmission assembly provided in this embodiment includes a connecting shaft 48, an incomplete gear ring 50, a pinion 49, and a synchronous transmission component. The connecting shafts 48 are symmetrically mounted on the first notched ring 18. The arc angle corresponding to the center of the two connecting shafts 48 and the first notched ring 18 is greater than the arc angle corresponding to the notch on the sliding notched ring 42. The incomplete gear ring 50 is fixed to the bottom of the sliding notched ring 42 and has the same arc angle as the sliding notched ring 42. The pinion 49 is fixed on the connecting shaft 48 and meshes with the incomplete gear ring 50. The synchronous transmission component is provided on the first notched ring 18 and is used to drive the two pinions 49 to rotate synchronously in the same direction. Preferably, the synchronous transmission component consists of a second motor 46, a synchronous pulley 45, and a synchronous belt 47. There are two synchronous pulleys 45, which are fixed on the connecting shafts 48 respectively. Their surfaces are provided with synchronous teeth. A synchronous belt 47 is installed between the two synchronous pulleys 45. The inner side of the synchronous belt 47 is provided with a synchronous groove. The second motor 46 is used to drive one of the connecting shafts 48 to rotate.

[0031] In practical use, the two pinions 49 rotate synchronously and in the same direction through the synchronous transmission component, which in turn drives the incomplete gear ring 50 to rotate. Since the arc angle corresponding to the center of the two connecting shafts 48 and the first notched ring 18 is greater than the arc angle corresponding to the notch on the sliding notched ring 42 (i.e., the central angle of the toothless part on the incomplete gear ring 50), the incomplete gear ring 50 can rotate continuously, which can further drive the sliding notched ring 42 to rotate one revolution.

[0032] like Figure 2 , Figure 3 , Figure 4 and Figure 10 As shown, the welding assembly provided in this embodiment includes a second notched ring 19 and a brazing heater 20. The second notched ring 19 is disposed within the welding area 8 and can slide along the axial direction of the second copper tube 11. The minimum spacing corresponding to its notch is greater than the maximum tube diameter clamped by the clamping member. The brazing heater 20 is disposed inside the second notched ring 19 and is used to heat and melt the brazing material. It should be noted that, in order to avoid collision between the first copper tube 10 and the second copper tube 11 when entering or exiting the first notched ring 18 or the second notched ring 19, the notches of the first notched ring 18 and the second notched ring 19 can be minimized. The quantity is set to be larger to improve the fault tolerance and avoid collisions. In addition, a positioning seat is installed on the outer wall of the fixed sleeve 3 at the position corresponding to the first notched ring 18 and the second notched ring 19. The positioning seat is preferably a contact switch. After it contacts the first notched ring 18, it triggers the wire feeding gun sleeve 16 to feed wire. After it contacts the second notched ring 19, it triggers the brazing heater 20 to work. It should be noted that when the first notched ring 18 and the second notched ring 19 are in contact with the positioning seat, the centers of the first notched ring 18 and the second notched ring 19 are on the straight line where the corresponding copper tube axis is located.

[0033] like Figure 3 , Figure 4 , Figure 10 , Figure 11 and Figure 12 As shown, to achieve height adjustment of the wire winding assembly and the welding assembly, the copper tube welding equipment for the refrigeration cabinet compressor provided in this embodiment also includes a top plate 17. The top plate 17 is installed at the wire winding area 7 and the welding area 8, and is equipped with a lifting assembly for driving the first notched ring 18 or the second notched ring 19 to move axially along the second copper tube 11. The lifting assembly includes a lead screw 31 rotatably mounted on the top plate 17 and a guide rod 32 fixed at both ends of the lower surface of the top plate 17. The guide rod 32 is slidably connected to the corresponding first notched ring 18 or the second notched ring 19, and the lead screw 31 is threadedly connected to the corresponding first notched ring 18 or the second notched ring 19. The threaded connection allows the first notched ring 18 or the second notched ring 19 to slide along the guide rod 32, thereby achieving height adjustment of the first notched ring 18 or the second notched ring 19, so that the wire winding assembly and the welding assembly correspond to the connection point of the first copper tube 10 and the second copper tube 11.

[0034] To facilitate the placement of the wire winding assembly and welding assembly, allowing the copper tube to smoothly enter the next stage, the copper tube welding equipment for the refrigeration cabinet compressor provided in this embodiment also includes a moving block 28, a return spring 21, and a boss 22. The moving block 28 is fixed to the lower end of the top plate 17 and fixedly connected to the lower end of the guide rod 32. It can slide on the surface of the worktable 2, and its end away from the top plate 17 is semi-circular. The return spring 21 is installed on the top plate 17 and the moving block 28 to drive the top plate 17 and the moving block 28 to move towards the rotating sleeve 4. There are four bosses 22, which are fixed at equal intervals on the outside of the rotating sleeve 4 and distributed around the circumference of the rotating sleeve 4. A groove 27 is formed between two adjacent rotating sleeves 4. The groove 27 slides with the moving block 28 to allow the moving block 28 to slide. 8. Slide towards or away from the rotating sleeve 4 to allow the first notched ring 18 and the second notched ring 19 to accommodate or disengage from the connection between the first copper tube 10 and the second copper tube 11. It should be noted that the length of one side of the groove 27 facing the rotation direction of the boss 22 is less than the length of its other side, so that the moving block 28 can quickly approach the rotating sleeve 4 during wire winding or welding, accelerating the accommodation of the first notched ring 18 and the second notched ring 19 at the connection between the first copper tube 10 and the second copper tube 11, and slowing down the speed at which the first notched ring 18 and the second notched ring 19 disengage from the connection between the first copper tube 10 and the second copper tube 11. The advantage of this design is that the first copper tube 10 and the second copper tube 11 can enter the interior of the first notched ring 18 or the second notched ring 19 more quickly and accurately.

[0035] like Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 8 and Figure 9As shown, to achieve coaxial fixation of the first copper tube 10 and the second copper tube 11, the clamping component provided in this embodiment includes an inner sleeve 13. The inner sleeve 13 is fixed to the outside of the rotating sleeve 4 and the other end of the connecting arm 29. The centers of the two inner sleeves 13 are on the same vertical line. The side wall of the inner sleeve 13 is provided with a through groove 40. A crank 39 is rotatably installed in the through groove 40. One end of the crank 39 extends into the inside of the inner sleeve 13 and is provided with a clamping post 38. An outer sleeve 12 is rotatably installed on the outside of the inner sleeve 13. The inner wall of the outer sleeve 12 is hinged to the other end of the crank 39, and a first rack 14 is provided on its outer side. It should be noted that the outer sleeve 12 is provided with a slot for connecting the inner sleeve 13 with the rotating sleeve 4 or the connecting arm 29. The arc angle corresponding to the slot needs to meet the maximum rotation angle of the outer sleeve 12. A spring spring 41 is installed in the gap between the outer sleeve 12 and the inner sleeve 13. The spring spring 41 is used to drive the outer sleeve 12 to rotate, so that the clamping posts 38 come closer to each other to clamp the copper tube.

[0036] like Figure 3 - Figure 12 As shown, in order to release the copper tube clamped in the clamping member, the copper tube welding equipment for the refrigeration cabinet compressor provided in this embodiment also includes a second rack 23 and a third rack 24. The second rack 23 is located in the feeding area 6 and the wire winding area 7. When the clamping member used to fix the second copper tube 11 moves to the second rack 23, the second rack 23 meshes with the first rack 14 to drive the outer sleeve 12 to rotate, so that the clamping posts 38 move away from each other. The third rack 24 is located in the feeding area 6 and the wire winding area 7. When the clamping member used to fix the first copper tube 10 moves to the third rack 24, the third rack 24 meshes with the first rack 14 to drive the outer sleeve 12 to rotate, so that the clamping posts 38 move away from each other.

[0037] It should be noted that the second rack 23 and the third rack 24 are not on the same vertical line in the feeding area 6, so as to facilitate the separate feeding of the first copper tube 10 and the second copper tube 11. The second rack 23 and the third rack 24 are on the same vertical line in the wire winding area 7, so as to facilitate the release of the copper tube after welding.

[0038] like Figure 1 , Figure 10 , Figure 11 and Figure 12As shown, since the clamping action of the clamping component is not completed instantaneously, in order to prevent the first copper tube 10 and the second copper tube 11 from falling off during loading, the copper tube welding equipment for the refrigeration cabinet compressor provided in this embodiment also includes a first support plate 25 and a second support plate 26. The first support plate 25 is located in the loading area 6 and below the second rack 23, and can slide along the axial direction of the second copper tube 11 for bottom support during loading of the second copper tube 11. The second support plate 26 is located in the loading area 6 and below the third rack 24, and can slide along the axial direction of the second copper tube 11 for bottom support during loading of the first copper tube 10. Preferably, the height of both the first support plate 25 and the second support plate 26 can be adjusted by adjusting bolts, so as to support the bottom of the first copper tube 10 and the second copper tube 11 of different lengths by adjusting the height.

[0039] like Figure 5 , Figure 6 , Figure 8 and Figure 9 As shown, in this embodiment, a rotating shaft 33 is fixed on the lower surface of the central column 5. Both the rotating shaft 33 and the rotating sleeve 4 are equipped with driven gears 36. A first motor 34 is fixed at the bottom of the worktable 2. A driving gear 35 is installed at the output end of the first motor 34. The driving gear 35 meshes with the driven gear 36. In use, the first motor 34 causes the driving gear 35 to rotate. Through the meshing of the driving gear 35 and the driven gear 36, the driven gear 36 drives the rotating shaft 33 and the rotating sleeve 4 to rotate respectively, thereby realizing the synchronous rotation of the first copper tube 10 and the second copper tube 11 around the rotating shaft 33, ensuring the coaxiality of the first copper tube 10 and the second copper tube 11.

[0040] like Figure 3 As shown, in order to limit the height of the connecting arm 29 when it changes, a sliding groove 30 is provided on the outer side of the central column 5 along the axial direction, and the connecting arm 29 is slidably connected to the sliding groove 30.

[0041] In use (operation), the first copper tube 10 and the second copper tube 11 are installed inside the clamping member. The outer sleeve 12 is driven to rotate by the spring 41, which in turn causes the outer sleeve 12 to move the crank 39. This causes the other end of the crank 39 to drive the clamping post 38 to abut against the copper tube, thus fixing the copper tube.

[0042] The first motor 34 is started, which causes the drive gear 35 to rotate. The drive gear 35 meshes with the driven gear 36, causing the driven gear 36 to drive the rotating shaft 33 and the rotating sleeve 4 to rotate, which in turn causes the connecting arm 29 to rotate. Under the interaction of the connecting slider 37 and the guide rail 15, the connecting arm 29 rises and falls on the fixed sleeve 3. When the connecting slider 37 moves from the high position area to the low position area of ​​the guide rail 15, the height position of the connecting arm 29 decreases, further causing the first copper tube 10 to move down until the first copper tube 10 is inserted into the second copper tube 11. When the clamping member moves to the winding area 7, the rotating sleeve 4 causes the boss 22 to rotate. At this time, the... Under the elastic force of the return spring 21, the moving block 28 slides towards the inside of the groove 27, thereby pulling the first notched ring 18 on the top plate 17 towards the copper tube, so that the copper tube enters through the notch of the first notched ring 18. The telescopic rod 43 causes the clamp 44 to abut against the copper tube. The wire is fed through the wire feed gun sleeve 16 and one end of the welding wire is clamped inside the clamp 44. At this time, the second motor 46 is started, which causes the synchronous transmission component to work, further causing the two small gears 49 to rotate synchronously in the same direction, which in turn drives the incomplete gear ring 50 to rotate, and further drives the sliding notched ring 42 to rotate one revolution, so that the welding wire is wound around the connection between the first copper tube 10 and the second copper tube 11.

[0043] When the clamping part moves to the welding area 8, the boss 22 is rotated by rotating the sleeve 4. At this time, the moving block 28 slides towards the inside of the groove 27 under the elastic force of the return spring 21, thereby pulling the second notched ring 19 on the top plate 17 towards the copper tube, so that the copper tube enters through the notch of the second notched ring 19, so that the brazing heater 20 is wrapped around the outside of the welding wire, further melting the welding wire and being sucked in and filled between the second copper tube 11 and the first copper tube 10 by means of capillary action, thus completing the copper tube welding.

[0044] After welding is completed, when the clamping part moves to the unloading area 9, the two first racks 14 engage with the second rack 23 and the third rack 24 at the same time, driving the outer sleeve 12 to rotate, further causing the clamping columns 38 to move away from each other, thus releasing the copper tube after welding.

[0045] After the copper tube is released, the clamping member moves to the loading area 6. During this process, the connecting slider 37 moves from the low position area to the high position area of ​​the guide rail 15, the height position of the connecting arm 29 rises, and the two inner sleeves 13 move away from each other. At this time, the first rack 14 and the second rack 23 located at the lower position engage first, so that the clamping member located at the lower position is opened, which facilitates the installation of the second copper tube 11. As the clamping member rotates, the first rack 14 and the third rack 24 located at the upper position engage, so that the clamping member located at the upper position is opened, which in turn facilitates the installation of the first copper tube 10.

[0046] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0047] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A copper tube welding device for a refrigeration cabinet compressor, comprising a workbench (2), characterized in that, The workbench (2) is provided with a feeding area (6), a wire winding area (7), a welding area (8), and a unloading area (9) arranged sequentially along its circumference, and also includes: A fixed sleeve (3) is fixed in the middle of the workbench (2), and a guide rail (15) is provided on it. The side of the guide rail (15) closest to the feeding area (6) is the high position area, and the side of the guide rail (15) closest to the wire winding area (7), welding area (8), and unloading area (9) is the low position area. The rotating sleeve (4) can be rotatably sleeved on the outside of the fixed sleeve (3); The central column (5) is located in the middle of the fixed sleeve (3) and rotates synchronously with the rotating sleeve (4). A connecting arm (29) is provided on its outer side. The connecting arm (29) can slide along the axial direction of the central column (5). A connecting slider (37) is provided at its lower end to form a sliding fit with the guide rail (15). When the connecting arm (29) rotates with the central column (5) and slides along the guide rail (15), its height is controlled by the contour of the guide rail (15). The clamping member is fixed to the outside of the rotating sleeve (4) and the other end of the connecting arm (29), respectively for the coaxial fixing of the second copper tube (11) and the first copper tube (10). When the connecting arm (29) slides from the high position area to the low position area, the first copper tube (10) and the second copper tube (11) on the two clamping members are inserted into each other.

2. The copper tube welding equipment for refrigeration cabinet compressors according to claim 1, characterized in that, Also includes: A wire winding assembly is provided at the wire winding area (7) for winding brazing material around the connection between the second copper tube (11) and the first copper tube (10); The wire winding assembly includes: The wire-exiting gun sleeve (16) is located in the wire winding area (7), with its wire-exiting end close to the connection between the second copper tube (11) and the first copper tube (10); The first notched ring (18) is located in the winding area (7) and can slide along the axis of the second copper tube (11). A sliding notched ring (42) is slidably connected to its inner side. The arc of the sliding notched ring (42) is greater than the arc of the notch on the first notched ring (18). The telescopic rod (43) is fixed on the sliding notch ring (42), and its telescopic end is provided with a claw (44). The transmission assembly is located on the first notched ring (18) and is used to drive the sliding notched ring (42) to rotate, so that the jaws (44) clamp one end of the welding wire and rotate one revolution along the connection between the first copper tube (10) and the second copper tube (11).

3. The copper tube welding equipment for refrigeration cabinet compressors according to claim 2, characterized in that, The transmission assembly includes: The connecting shafts (48) are symmetrically installed on the first notched ring (18). The arc angles corresponding to the center of the two connecting shafts (48) and the first notched ring (18) are greater than the arc angles corresponding to the notches on the sliding notched ring (42). An incomplete toothed ring (50) is fixed to the bottom of a sliding notch ring (42) and has the same arc angle as the sliding notch ring (42); The pinion (49) is fixed on the connecting shaft (48) and meshes with the incomplete gear ring (50); A synchronous transmission component is provided on the first notched ring (18) to drive the two pinions (49) to rotate synchronously in the same direction.

4. The copper tube welding equipment for refrigeration cabinet compressors according to claim 3, characterized in that, Also includes: A welding assembly is provided in the welding area (8) for brazing the connection between the second copper tube (11) and the first copper tube (10); The welding assembly includes: The second notched ring (19) is located in the welding area (8) and can slide along the axial direction of the second copper tube (11); A brazing heater (20) is located inside the second notched ring (19) and is used to heat and melt the brazing material.

5. The copper tube welding equipment for refrigeration cabinet compressors according to claim 4, characterized in that, Also includes: The top plate (17) is installed in the wire winding area (7) and the welding area (8), and is equipped with a lifting assembly for driving the first notched ring (18) or the second notched ring (19) to move axially along the second copper tube (11); The movable block (28) is fixed to the lower end of the top plate (17) and can slide on the surface of the workbench (2). The end of it away from the top plate (17) is semi-circular. A reset spring (21) is installed at one end of the top plate (17) and the moving block (28) to drive the top plate (17) and the moving block (28) to move toward the rotating sleeve (4); There are four bosses (22) fixed on the outside of the rotating sleeve (4) and distributed around the circumference of the rotating sleeve (4). A groove (27) is formed between two adjacent rotating sleeves (4). The groove (27) is slidably engaged with the moving block (28) so that the moving block (28) slides toward or away from the rotating sleeve (4) so ​​that the first notch ring (18) and the second notch ring (19) can accommodate or disengage from the connection between the first copper tube (10) and the second copper tube (11).

6. The copper tube welding equipment for refrigeration cabinet compressors according to any one of claims 1-5, characterized in that, The clamping element includes: The inner sleeve (13) is fixed to the outside of the rotating sleeve (4) and the other end of the connecting arm (29), with the centers of the two inner sleeves (13) on the same vertical line. A through groove (40) is provided on the side wall of the inner sleeve (13), and a crank (39) is rotatably installed in it. One end of the crank (39) extends into the inner sleeve (13) and is provided with a clamping post (38). The outer sleeve (12) is rotatably mounted on the outside of the inner sleeve (13), its inner wall is hinged to the other end of the crank (39), and its outer side is provided with a first rack (14). A spring (41) is located in the gap between the outer sleeve (12) and the inner sleeve (13) to drive the outer sleeve (12) to rotate, so that the clamping posts (38) come closer to each other to clamp the copper tube.

7. The copper tube welding equipment for refrigeration cabinet compressors according to claim 6, characterized in that, Also includes: The second rack (23) and the third rack (24); The second rack (23) is located in the feeding area (6) and the winding area (7). When the clamping member used to fix the second copper tube (11) moves to its lower position, it engages with the first rack (14) to drive the outer sleeve (12) to rotate, so that the clamping column (38) moves away from each other. The third rack (24) is located in the feeding area (6) and the winding area (7). When the clamping member for the first copper tube (10) moves above it, it engages with the first rack (14) to drive the outer sleeve (12) to rotate, so that the clamping column (38) moves away from each other. Among them, the second rack (23) and the third rack (24) are not on the same vertical line in the feeding area (6), while the second rack (23) and the third rack (24) are on the same vertical line in the winding area (7).

8. The copper tube welding equipment for refrigeration cabinet compressors according to claim 7, characterized in that, Also includes: The first support plate (25) is located in the feeding area (6) and below the second rack (23). It can slide along the axial direction of the second copper tube (11) and is used for bottom support when the second copper tube (11) is fed. The second support plate (26) is located in the feeding area (6) and below the third rack (24). It can slide along the axis of the second copper tube (11) and is used for bottom support when the first copper tube (10) is fed.

9. The copper tube welding equipment for refrigeration cabinet compressors according to claim 7 or 8, characterized in that, A rotating shaft (33) is fixed on the lower surface of the central column (5). Both the rotating shaft (33) and the rotating sleeve (4) are equipped with driven gears (36). A first motor (34) is fixed at the bottom of the worktable (2). A driving gear (35) is installed at the output end of the first motor (34). The driving gear (35) meshes with the driven gear (36).

10. The copper tube welding equipment for a refrigeration cabinet compressor according to claim 9, characterized in that, The outer side of the central column (5) is provided with a sliding groove (30) along the axial direction, and the connecting arm (29) is slidably connected to the sliding groove (30).

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