Refrigerator compressor copper pipe welding equipment

Abstract

The application discloses a refrigeration cabinet compressor copper pipe welding equipment and relates to the technical field of compressor copper pipe welding. The refrigeration cabinet compressor copper pipe welding equipment comprises a workbench top, a feeding area, a wire winding area, a welding area and a discharging area are sequentially arranged on the workbench top in a circumferential direction, and the refrigeration cabinet compressor copper pipe welding equipment further comprises a fixing sleeve fixed to the middle part of the workbench top and provided with a guide rail. Through the cooperation of the four stations of the circumferentially distributed feeding area, the wire winding area, the welding area and the discharging area, combined with the synchronous rotation driving of the rotating sleeve and the center column, the copper pipe can automatically complete the whole process of splicing, wire winding, welding and discharging after single clamping. The high and low design of the guide rail forcibly controls the lifting action of the connecting arm, so that the first copper pipe can be accurately inserted into the second copper pipe during the rotation process, the process interruption caused by manual step-by-step operation in the traditional process is completely eliminated, and the production efficiency and process continuity are significantly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of compressor copper pipe welding, in particular to a refrigeration cabinet compressor copper pipe welding equipment. BACKGROUND

[0002] As the core component of the refrigeration system, the compressor extracts and compresses the refrigerant from the low-pressure area to the high-pressure area through the copper pipe to realize efficient heat transfer from the heat sink to the air. In this process, the refrigeration copper pipe plays a key role in medium conduction. However, when welding the copper pipe, the operator usually holds the welding gun to burn the copper pipe connection on one side, and manually fills the solder for welding. Although this method is simple to operate, it seriously restricts the precision and reliability of the compressor copper pipe welding.

[0003] Chinese patent with publication number CN116871809A discloses a refrigeration cabinet compressor copper pipe welding equipment. When in use, the copper pipe can be quickly moved to the copper pipe welding position. During the movement, the positioning mechanism can move the copper pipe in the clamping piece towards the positioning plate, and finally make one end of the copper pipe contact with the positioning plate, thereby positioning the copper pipe. This can make the copper pipe reach a set position, so as to control the depth of mutual insertion when the copper pipe is welded and butt jointed, and ensure the overall height after the copper pipe is welded, thereby improving the precision when the copper pipe is inserted into the specified position in the compressor shell.

[0004] Although the above structure has certain automation effect, in actual use, feeding, positioning, welding and unloading all need to be operated step by step. Each link needs to be stopped and rotated to wait for manual intervention. The process is fragmented, which leads to low efficiency, and manual intervention increases the risk of quality fluctuation. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides a refrigeration cabinet compressor copper pipe welding equipment to solve the problems raised in the background art.

[0006] In order to achieve the above object, the present application is realized by the following technical scheme: the refrigeration cabinet compressor copper pipe welding equipment, including the workbench, the workbench is sequentially provided with the feeding area, the wire winding area, the welding area and the discharging area along the circumference, further comprising: the fixed sleeve is fixed in the middle of the workbench, and the guide rail is arranged on the fixed sleeve, the side of the guide rail close to the feeding area is the high position area, and the side of the guide rail close to the wire winding area, the welding area and the discharging area is the low position area; the rotating sleeve is rotatably arranged outside the fixed sleeve; the center column is arranged in the middle of the fixed sleeve and rotates synchronously with the rotating sleeve, and the outside of the center column is provided with a connecting arm, the connecting arm can slide along the center column in the axial direction, and the lower end of the connecting arm is provided with a connecting sliding block which is in sliding fit with the guide rail, so that when the connecting arm rotates with the center column and slides along the guide rail, the height of the connecting arm is controlled by the contour of the guide rail; the clamping pieces are fixed to the outside of the rotating sleeve and the other end of the connecting arm, and are used for coaxial fixing of the second copper pipe and the first copper pipe, wherein the connecting arm slides from the high position area to the low position area, and the first copper pipe and the second copper pipe on the two clamping pieces are inserted; the wire winding assembly is arranged at the wire winding area and is used for winding the brazing material at the connecting position of the second copper pipe and the first copper pipe; the welding assembly is arranged at the welding area and is used for brazing at the connecting position of the second copper pipe and the first copper pipe.

[0007] Further, the wire winding assembly comprises: a wire outlet gun sleeve arranged in the wire winding area, and the wire outlet end of the wire outlet gun sleeve is close to the connecting position of the second copper pipe and the first copper pipe; a first notch ring arranged in the wire winding area and slidable along the second copper pipe in the axial direction, and the inner side of the first notch ring is slidably connected with a sliding notch ring, and the curvature of the sliding notch ring is greater than the curvature corresponding to the notch on the first notch ring; a telescopic rod fixed to the sliding notch ring and provided with a clamping jaw at the telescopic end; and a transmission assembly arranged on the first notch ring and used for driving the sliding notch ring to rotate, so that the clamping jaw clamps one end of the welding wire and rotates one circle along the connecting position of the first copper pipe and the second copper pipe.

[0008] Further, the transmission assembly comprises: connecting shafts symmetrically mounted on the first notch ring, and the curvature angle of the two connecting shafts corresponding to the center of the first notch ring is greater than the curvature angle corresponding to the notch on the sliding notch ring; an incomplete tooth ring fixed to the bottom of the sliding notch ring and having the same curvature angle as the sliding notch ring; a pinion fixed to the connecting shaft and meshing with the incomplete tooth ring; and a synchronous transmission piece arranged on the first notch ring and used for driving the two pinions to synchronously rotate in the same direction.

[0009] Further, the welding assembly comprises: a second notch ring arranged in the welding area and slidable along the second copper pipe in the axial direction; and a brazing heater arranged on the inner side of the second notch ring and used for heating and melting the brazing material.

[0010] Further, it also comprises a top plate installed at the winding area and the welding area, and a lifting assembly is arranged on the top plate to drive the first gap ring or the second gap ring to move along the second copper pipe in the axial direction; a moving block is fixed to the lower end of the top plate and can slide on the surface of the workbench, and the end away from the top plate is semicircular; a return spring is installed at the end of the moving block and the top plate to drive the top plate and the moving block to move towards the rotating sleeve; four bosses are fixed to the outer side of the rotating sleeve and are distributed in the circumferential direction of the rotating sleeve, and a groove is formed between the adjacent two rotating sleeves, and the groove is in sliding fit with the moving block to make the moving block slide towards or away from the rotating sleeve, so that the first gap ring and the second gap ring are accommodated or separated from the connection part of the first copper pipe and the second copper pipe.

[0011] Further, the clamping piece comprises an inner sleeve fixed to the outer side of the rotating sleeve and the other end of the connecting arm, and the centers of the two inner sleeves are on the same vertical line; a through slot is arranged on the side wall of the inner sleeve, and a crank is rotatably installed in the through slot, and the end of the crank extends into the inner sleeve and is provided with a clamping column; an outer sleeve is rotatably installed on the outer side of the inner sleeve, the inner wall of the outer sleeve is hinged to the other end of the crank, and the outer side of the outer sleeve is provided with a first rack; a clock spring is arranged at the gap between the outer sleeve and the inner sleeve to drive the outer sleeve to rotate, so that the clamping columns are close to each other to clamp the copper pipe.

[0012] Further, it also comprises a second rack and a third rack; the second rack is arranged in the feeding area and the winding area, and is engaged with the first rack when the clamping piece for fixing the second copper pipe moves below the second rack, so as to drive the outer sleeve to rotate and make the clamping columns away from each other; the third rack is arranged in the feeding area and the winding area, and is engaged with the first rack when the clamping piece for the first copper pipe moves above the third rack, so as to drive the outer sleeve to rotate and make the clamping columns 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] Further, it also comprises a first support plate arranged in the feeding area and located below the second rack, which can slide in the axial direction of the second copper pipe and is used for supporting the bottom of the second copper pipe during feeding; a second support plate arranged in the feeding area and located below the third rack, which can slide in the axial direction of the second copper pipe and is used for supporting the bottom of the first copper pipe during feeding.

[0014] Further, the lower surface of the center column is fixed with a rotating shaft, the rotating shaft and the rotating sleeve are both provided with a driven gear, the bottom of the workbench is fixed with a first motor, the output end of the first motor is provided with a driving gear, and the driving gear is engaged with the driven gear.

[0015] Further, the outer side of the center column is provided with a sliding groove in the axial direction, and the connecting arm is in sliding connection with the sliding groove.

[0016] The present application has the following beneficial effects:

[0017] (1) The refrigeration cabinet compressor copper pipe welding equipment, through the cooperation of the four stations of the circumferentially distributed feeding area, wire winding area, welding area and discharging area, combined with the synchronous rotation drive of the rotating sleeve and the center column, the copper pipe automatically completes the insertion, wire winding, welding and discharging whole process after single clamping, the high-low design of the guide rail forcibly controls the lifting action of the connecting arm, so that the first copper pipe is accurately inserted into the second copper pipe during rotation, completely eliminating the process interruption caused by manual step-by-step operation in traditional process, and significantly improving the production efficiency and process continuity.

[0018] (2) The refrigeration cabinet compressor copper pipe welding equipment, through the cooperation of the first gap ring and the sliding gap ring, realizes 360° rotation under the action of the incomplete tooth ring transmission, drives the clamping jaw to completely wrap the welding wire around the copper pipe connection, and the physical performance of the step structure formed after the copper pipe is inserted blocks the welding wire from falling, solving the problems of stacking, loosening and falling caused by traditional manual winding.

[0019] (3) The refrigeration cabinet compressor copper pipe welding equipment, through the forced control of the guide rail profile on the height of the connecting arm, combined with the axial limiting of the center column sliding groove, ensures that the first copper pipe and the second copper pipe always maintain coaxiality during insertion, the gap ring of the wire winding and welding assembly is quickly positioned by the boss and groove mechanism, so that the brazing heater accurately covers the weld area, realizes uniform heating in a ring shape, and fully penetrates in the non-deviated insertion gap, so that the weld density is significantly improved.

[0020] (4) The refrigeration cabinet compressor copper pipe welding equipment, through the adjustable height support plate temporarily supporting the copper pipe during the feeding stage, eliminates the risk of falling caused by delayed clamping action, the fault tolerance distance of the first gap ring is greater than the maximum pipe diameter, combined with the automatic start-stop control of the positioning seat contact switch, to prevent the equipment from damaging the copper pipe due to misoperation, the clamping mechanism is self-adaptive to different pipe diameters through the lever amplification effect of the crank, the lifting assembly adjusts the height of the gap ring to adapt to diversified workpieces, and the application scene of the equipment is improved.

[0021] Of course, it is not necessary for any product implementing the present application to achieve all the advantages described above at the same time. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a structural schematic diagram of the present application;

[0023] Figure 2 is a top view of the present application Figure 1 ;

[0024] Figure 3 is a structural schematic diagram of the present application when the clamping piece is moving;

[0025] Figure 4 is a structural schematic diagram of the present applicationFigure 3 Top view;

[0026] Figure 5 This is a schematic diagram of the rotating sleeve and central column transmission structure in this invention;

[0027] Figure 6 This is a schematic diagram of the connection structure between the connecting arm and the guide rail in this invention;

[0028] Figure 7 This is a schematic diagram of the guide rail structure in this invention;

[0029] Figure 8 This is a schematic diagram of the mounting structure of the rotating shaft in this invention;

[0030] Figure 9 This is a schematic diagram of the internal structure of the clamping component in this invention;

[0031] Figure 10 This is a schematic diagram of the partitioned structure of the workbench in this invention;

[0032] Figure 11 In this invention Figure 10 Another perspective view;

[0033] Figure 12 In this invention Figure 10 Top view;

[0034] Figure 13 This is a schematic diagram of the structure of the first notched ring in this invention;

[0035] Figure 14 This is a schematic diagram of the driving structure of the sliding notched ring in this invention.

[0036] 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

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] In addition, the refrigeration cabinet compressor copper pipe welding equipment provided by the embodiment further comprises clamping pieces, a wire winding assembly, and a welding assembly. The clamping pieces are fixed to the outer side of the rotating sleeve 4 and the other end of the connecting arm 29, and are respectively used for coaxially fixing the second copper pipe 11 and the first copper pipe 10. When the connecting arm 29 slides from the high position area to the low position area, the first copper pipe 10 and the second copper pipe 11 on the two clamping pieces are close to each other and are inserted. The wire winding assembly is arranged at the wire winding area 7 and is used for winding the brazing material at the connecting position of the second copper pipe 11 and the first copper pipe 10. It should be noted that the brazing material is preferably a welding wire. Preferably, the outer diameter of the first copper pipe 10 is smaller than the outer diameter of the second copper pipe 11. After the welding wire is wound at the connecting position of the first copper pipe 10 and the second copper pipe 11, due to the difference in the outer diameters, a ring-shaped step is formed at the connecting position, so as to avoid the welding wire from falling along the copper pipe after being wound. In addition, the welding assembly is arranged at the welding area 8 and is used for brazing at the connecting position of the second copper pipe 11 and the first copper pipe 10. During welding, the welding wire is melted and is absorbed into and fills the gap between the second copper pipe 11 and the first copper pipe 10 by capillary action. After condensation, the liquid brazing material and the workpiece metal are mutually diffused and dissolved, and the copper pipe welding is completed.

[0042] As shown in Figure 3 , Figure 4 , Figure 13 and Figure 14 , the wire winding assembly comprises a wire outlet gun sleeve 16. The wire outlet gun sleeve 16 is arranged in the wire winding area 7, and the wire outlet end of the wire outlet gun sleeve 16 is close to the connecting position of the second copper pipe 11 and the first copper pipe 10, so as to form a wire outlet fixing point. Preferably, the wire outlet gun sleeve 16 can move along the axial direction of the wire outlet gun sleeve 16, so as to provide space for the subsequent rotation of the clamping jaw 44. In addition, a cutter can be arranged at the wire outlet end of the wire outlet gun sleeve 16, so as to cut the welding wire when the wire outlet gun sleeve 16 provides space.

[0043] The wire winding assembly further comprises a first notch ring 18 and an extension rod 43. The first notch ring 18 is arranged in the wire winding area 7, and the minimum distance corresponding to the notch of the first notch ring 18 is greater than the maximum pipe diameter clamped by the clamping piece. In addition, the first notch ring 18 can slide along the axial direction of the second copper pipe 11. The inner side of the first notch ring 18 is slidably connected with a sliding notch ring 42. The curvature of the sliding notch ring 42 is greater than the curvature corresponding to the notch of the first notch ring 18, so as to ensure the stability of the sliding notch ring 42 when the sliding notch ring 42 slides in the first notch ring 18. In addition, the extension rod 43 is fixed to the sliding notch ring 42, and the extension end of the extension rod 43 is provided with a clamping jaw 44. The clamping jaw 44 is used for clamping the welding wire. A transmission assembly is arranged on the first notch ring 18. The transmission assembly is used for driving the sliding notch ring 42 to rotate, so that the clamping jaw 44 clamps one end of the welding wire and rotates one circle along the connecting position of the first copper pipe 10 and the second copper pipe 11.

[0044] As shown in Figure 13 and Figure 14As shown in the drawings, the transmission assembly provided by the embodiment comprises connecting shafts 48, incomplete toothed rings 50, pinions 49 and synchronous transmission members. The connecting shafts 48 are symmetrically installed on the first gap ring 18, and the corresponding arc angle of the two connecting shafts 48 and the center of the first gap ring 18 is greater than the corresponding arc angle of the gap on the sliding gap ring 42. The incomplete toothed ring 50 is fixed to the bottom of the sliding gap ring 42 and has the same arc angle as the sliding gap ring 42. The pinion 49 is fixed to the connecting shaft 48 and meshes with the incomplete toothed ring 50. The synchronous transmission member is arranged on the first gap ring 18 and is used to drive the two pinions 49 to synchronously rotate in the same direction. Preferably, the synchronous transmission member is composed of the second motor 46, synchronous wheels 45 and a synchronous belt 47. The synchronous wheel 45 is composed of two synchronous wheels, which are respectively fixed to the connecting shaft 48 and have synchronous teeth on the surface. The synchronous belt 47 is arranged between the two synchronous wheels 45, and 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.

[0045] Specifically in use, the two pinions 49 are driven to synchronously rotate in the same direction by the synchronous transmission member, and then the incomplete toothed ring 50 is driven to rotate. Since the corresponding arc angle of the two connecting shafts 48 and the center of the first gap ring 18 is greater than the corresponding arc angle of the gap on the sliding gap ring 42 (i.e. the central angle of the toothless part on the incomplete toothed ring 50), the incomplete toothed ring 50 can be continuously rotated, and the sliding gap ring 42 can be further driven to rotate one circle.

[0046] As shown in the drawings, Figure 2 , Figure 3 , Figure 4 and Figure 10 , the welding assembly provided by the embodiment comprises a second gap ring 19 and a brazing heater 20. The second gap ring 19 is arranged in the welding area 8 and can slide along the second copper pipe 11 in the axial direction. The minimum distance corresponding to the gap of the second gap ring 19 is greater than the maximum pipe diameter clamped by the clamping member. The brazing heater 20 is arranged on the inner side of the second gap ring 19 and is used to heat and melt the brazing material. It should be noted that, in order to avoid the collision between the first copper pipe 10 and the second copper pipe 11 when entering or leaving the inside of the first gap ring 18 or the second gap ring 19, the gap of the first gap ring 18 and the second gap ring 19 is preferably set to be larger to improve the fault tolerance and avoid the collision. In addition, the outer wall of the fixed sleeve 3 is provided with a positioning seat at the position corresponding to the first gap ring 18 and the second gap ring 19. Preferably, the positioning seat is a contact switch. When the first gap ring 18 and the second gap ring 19 contact the contact switch, the contact switch triggers the wire gun sleeve 16 to supply the wire, and when the second gap ring 19 contacts the contact switch, the contact switch triggers the brazing heater 20 to work. It should be noted that, when the first gap ring 18 and the second gap ring 19 contact the positioning seat, the centers of the first gap ring 18 and the second gap ring 19 are on the straight line where the centers of the corresponding copper pipes are located.

[0047] As shown in the drawings, 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.

[0048] 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.

[0049] like Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 8 and Figure 9As shown, in order to achieve coaxial fixation of the first copper pipe 10 and the second copper pipe 11, the clamping piece provided in the embodiment includes an inner sleeve 13 fixed to the outer side 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 slot 40, a crank 39 is rotatably installed in the through slot 40, one end of the crank 39 extends into the inner sleeve 13 and is provided with a clamping column 38, an outer sleeve 12 is rotatably installed on the outer side of the inner sleeve 13, the inner wall of the outer sleeve 12 is hinged to the other end of the crank 39, and the outer side of the outer sleeve 12 is provided with a first rack 14, it should be noted that the outer sleeve 12 is provided with a notch for the connection of the inner sleeve 13 and the rotating sleeve 4 or the connecting arm 29, and the corresponding radian angle of the notch needs to meet the maximum rotation angle of the outer sleeve 12, a clock spring 41 is installed at the gap between the outer sleeve 12 and the inner sleeve 13, the clock spring 41 is used to drive the rotation of the outer sleeve 12, so that the clamping columns 38 are close to each other to clamp the copper pipe.

[0050] As shown in Figure 3 , Figure 12 As shown, in order to achieve the release of the clamping of the copper pipe in the clamping piece, the refrigeration cabinet compressor copper pipe welding equipment provided in the embodiment further includes a second rack 23 and a third rack 24, the second rack 23 is arranged in the feeding area 6 and the wire winding area 7, when the clamping piece for fixing the second copper pipe 11 moves to the second rack 23, the second rack 23 is engaged with the first rack 14 to drive the rotation of the outer sleeve 12, so that the clamping columns 38 are away from each other, the third rack 24 is arranged in the feeding area 6 and the wire winding area 7, when the clamping piece for the first copper pipe 10 moves to the third rack 24, the third rack 24 is engaged with the first rack 14 to drive the rotation of the outer sleeve 12, so that the clamping columns 38 are away from each other.

[0051] 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 pipe 10 and the second copper pipe 11, and 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 pipe after welding.

[0052] As shown in Figure 1 , Figure 10 , Figure 11 and Figure 12As shown, in order to prevent the first copper pipe 10 and the second copper pipe 11 from falling during feeding, the refrigeration cabinet compressor copper pipe welding equipment provided by the embodiment further comprises a first supporting plate 25 and a second supporting plate 26. The first supporting plate 25 is arranged in the feeding area 6 and located below the second rack 23, and can slide axially along the second copper pipe 11, and is used for supporting the bottom of the second copper pipe 11 during feeding. The second supporting plate 26 is arranged in the feeding area 6 and located below the third rack 24, and can slide axially along the second copper pipe 11, and is used for supporting the bottom of the first copper pipe 10 during feeding. Preferably, the heights of the first supporting plate 25 and the second supporting plate 26 are adjusted by adjusting bolts, and the heights are adjusted to support the bottoms of the first copper pipe 10 and the second copper pipe 11 of different lengths.

[0053] As shown in Figure 5 , Figure 6 , Figure 8 and Figure 9 , the lower surface of the center column 5 is fixed with a rotating shaft 33, the rotating shaft 33 and the rotating sleeve 4 are both installed with a driven gear 36, the bottom of the workbench 2 is fixed with a first motor 34, the output end of the first motor 34 is installed with a driving gear 35, the driving gear 35 is engaged with the driven gear 36. In use, the driving gear 35 is rotated by the first motor 34, the driven gear 36 is driven to rotate by the engagement between the driving gear 35 and the driven gear 36, so that the first copper pipe 10 and the second copper pipe 11 are synchronously rotated around the rotating shaft 33, and the coaxiality of the first copper pipe 10 and the second copper pipe 11 is ensured.

[0054] As shown in Figure 3 , in order to limit the height change of the connecting arm 29, a sliding groove 30 is arranged on the outer side of the center column 5 in the axial direction, and the connecting arm 29 is slidingly connected with the sliding groove 30.

[0055] In use (during work), the first copper pipe 10 and the second copper pipe 11 are installed inside the clamping piece, the outer sleeve 12 is driven to rotate by the clock spring 41, the outer sleeve 12 is further driven to move the crank 39, so that the crank 39 drives the clamping column 38 to abut against the copper pipe, and the copper pipe is fixed.

[0056] The first motor 34 is started, the main gear 35 is rotated by the first motor 34, the main gear 35 is engaged with the driven gear 36, the driven gear 36 drives the rotating sleeve 4 and the rotating shaft 33 to rotate, the connecting arm 29 is rotated, the connecting slider 37 and the guide rail 15 interact, the connecting arm 29 is lifted 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 is lowered, the first copper pipe 10 is further lowered, until the first copper pipe 10 is inserted into the second copper pipe 11, when the clamping piece moves to the winding area 7, the boss 22 is rotated by the rotating sleeve 4, at this time, the moving block 28 slides to the inside of the groove 27 under the elastic force of the return spring 21, so that the first gap ring 18 on the top plate 17 moves to the copper pipe direction, the copper pipe enters the gap part of the first gap ring 18, the clamping jaw 44 is abutted with the copper pipe by the telescopic rod 43, the wire is supplied by the wire gun sleeve 16 and the welding wire end is clamped in the clamping jaw 44, at this time, the second motor 46 is started, the synchronous transmission part works by the second motor 46, the two pinions 49 are further driven to rotate synchronously and in the same direction, the incomplete tooth ring 50 is further driven to rotate, the sliding gap ring 42 can be further driven to rotate one circle, so that the welding wire is wound around the connection part of the first copper pipe 10 and the second copper pipe 11.

[0057] When the clamping piece moves to the welding area 8, the boss 22 is rotated by the rotating sleeve 4, at this time, the moving block 28 slides to the inside of the groove 27 under the elastic force of the return spring 21, so that the second gap ring 19 on the top plate 17 moves to the copper pipe direction, the copper pipe enters the gap part of the second gap ring 19, so that the brazing heater 20 is wrapped outside the welding wire, the welding wire is further melted and is absorbed and filled between the gap between the second copper pipe 11 and the first copper pipe 10 by capillary action, the copper pipe welding is completed.

[0058] After the welding is completed, when the clamping piece moves to the unloading area 9, the outer sleeve 12 is driven to rotate by the engagement of the two first racks 14 and the second rack 23 and the third rack 24, the clamping columns 38 are further away from each other, the copper pipe after welding is released.

[0059] After the copper pipe is released, the clamping piece moves to the loading area 6, in 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 is raised, the two inner sleeves 13 are away from each other, at this time, the first rack 14 and the second rack 23 at the lower position are engaged first, so that the clamping piece at the lower position is opened, thereby facilitating the installation of the second copper pipe 11, as the clamping piece rotates, the first rack 14 and the third rack 24 at the upper position are engaged, so that the clamping piece at the upper position is opened, thereby facilitating the installation of the first copper pipe 10.

[0060] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other presenters can develop. It is also possible, however, that only a single element can be present. It is further noted that such a term as "comprising" is intended to mean that the embodiments include the recited elements, but not excluding other elements. "Consisting essentially of when used herein in relation to a composition, means that the composition includes the recited elements, and can include additional elements, so long as the additional elements do not materially alter the basic and novel properties of the claimed composition. "Consisting of" when used herein in relation to a composition means that the composition includes the recited elements and nothing more.

[0061] The preferred embodiments of the application disclosed above are only to help explain the principles of the present application. The preferred embodiments do not describe all the details of the present application, nor limit the present application to only the specific embodiments described. It is apparent that many modifications and variations can be made to the present application based on the content of the present disclosure. The present disclosure selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present application, so that those skilled in the art can well understand and utilize the present application. The present application 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) slides 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 parts are 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 parts are inserted into each other. 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 jaw (44) clamps one end of the welding wire and rotates one revolution along the connection between the first copper tube (10) and the second copper tube (11); It also includes: a welding assembly, located 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; 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 the block 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).

2. The copper tube welding equipment for refrigeration cabinet compressors according to claim 1, 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.

3. The copper tube welding equipment for refrigeration cabinet compressors according to claim 1 or 2, 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.

4. The copper tube welding equipment for refrigeration cabinet compressors according to claim 3, 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).

5. The copper tube welding equipment for refrigeration cabinet compressors according to claim 4, 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.

6. The copper tube welding equipment for refrigeration cabinet compressors according to claim 5, 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).

7. The copper tube welding equipment for refrigeration cabinet compressors according to claim 6, 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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