Air conditioning copper pipe welding equipment

Abstract

The present invention relates to the technical field of brazing welding, and discloses an air-conditioning copper tube welding device, including a box body, two clamping mechanisms are arranged above the box body, a cushion block is fixedly connected to the upper surface of the box body, and a hole expansion mechanism is fixedly connected to the upper surface of the cushion block, one of the clamping mechanisms is fixedly connected to the cushion block, the inner wall of the box body is fixedly connected to a first motor, and the driving end of the first motor is fixedly connected to a screw, and the outer wall thread sleeve of the screw is provided with a fixed block. The present invention can fix the copper tube by arranging the clamping mechanism, and can automatically expand the hole of one of the copper tubes before aligning the two sections of the copper tubes by arranging the hole expansion mechanism, so that one copper tube can be inserted into the other copper tube in the groove during subsequent welding, so that during welding, the reliability of the piping welding can be improved, and the risk of refrigerant leakage can be reduced, and when the device expands the hole and docks the two sections of the copper tubes, it does not need to be done manually, which is convenient and quick.

Description

Technical Field

[0001] The invention relates to the technical field of brazing welding, in particular to air-conditioning copper pipe welding equipment. Background Art

[0002] The refrigeration copper tube connected to the air-conditioning compressor needs to be extended by welding according to the actual installation requirements. The operator usually directly uses a hand-held heating device to burn the connection between the refrigeration copper tube and the connecting copper tube, and then uses a hand-held brazing rod to weld the connection, so that the melted brazing rod connects the refrigeration copper tube and the connecting copper tube.

[0003] A two-device piping welding process disclosed in the authorization announcement number CN105583541B includes the following steps: surface treatment of a first copper tube and a second copper tube, coaxially inserting the second copper tube into the first copper tube; welding with a first type of solder with a low silver content under the protection of a nitrogen atmosphere, the flux position is from the end of the second copper tube to the end of the first copper tube extending L1; welding with a second type of solder with a high silver content, the welding position is from the welding end point of the first type of solder to the end of the first copper tube extending L2; after welding, natural cooling is performed under the protection of a nitrogen atmosphere. This welding process can improve the welding quality of the welding point, thereby improving the reliability of piping welding, and is particularly applicable to the copper tube and aluminum fin piping of air-conditioning components, which can reduce the risk of refrigerant leakage and achieve the purpose of environmental protection. In order to reduce the risk of refrigerant leakage, the diameter of the refrigeration copper tube and the connecting copper tube connected to the air-conditioning compressor are generally the same. During welding, it is impossible to insert one conduit into another for welding. Therefore, during welding, a welding device needs to be designed to expand one of the pipes during welding, and then insert the other pipe into the expanded pipe for welding. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art, and to propose an air-conditioning copper tube welding device, which can automatically expand the hole of one of the two copper tubes before aligning them, so that one copper tube can be inserted into the other copper tube during subsequent welding, thereby improving the reliability of copper tube welding.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] The cam is an air-conditioning device for welding copper pipes, comprising a box body, two clamping mechanisms are arranged on the top of the box body, a pad is fixedly connected to the upper surface of the box body, and a hole expanding mechanism is fixedly connected to the upper surface of the pad, one of the clamping mechanisms is fixedly connected to the pad, the inner wall of the box body is fixedly connected to a first motor, and a driving end of the first motor is fixedly connected to a screw, a fixing block is threadedly sleeved on the outer wall of the screw, and a support rod is fixedly connected to the upper surface of the fixing block, a strip groove is opened on the upper surface of the box body, and one end of the support rod passes through the strip groove and extends to the outside of the strip groove, one end of the support rod located outside the strip groove is fixedly connected to the support block, and the inner wall of the support block is fixedly connected to a cylinder, one end of the cylinder is fixedly connected to the other clamping mechanism, the upper surface of the box body is fixedly connected to a frame, and a side wall of the frame is fixedly connected to a lifting push rod, and one end of the lifting push rod is fixedly connected to a heater.

[0007] Preferably, the reaming mechanism includes a second motor fixedly connected to the pad, and the driving end of the second motor is fixedly connected to a C-shaped clamp, a reaming plug is arranged in the C-shaped clamp, and a bolt is threadedly connected to a side wall of one side of the C-shaped clamp, and one end of the bolt passes through the C-shaped clamp and abuts against the reaming plug.

[0008] Preferably, the clamping mechanism includes a lower clamping block and an upper clamping block, the upper surface of the lower clamping block is provided with a groove, and the inner wall of the groove is fixedly connected with a threaded column, one end of the threaded column passes through the upper clamping block, the outer wall of the threaded column is sleeved with a spring, and one end of the spring is fixedly connected to the inner wall of the groove, the other end of the spring is fixedly connected to the upper clamping block, and the outer wall of the threaded column is threadedly connected with a nut.

[0009] Preferably, a limiting hole is provided on one side wall of the support block, and an electric push rod is fixedly connected to the inner wall of the limiting hole, a limiting ring is fixedly connected to the lower surface of the clamping mechanism, and the inner wall of the limiting ring is slidably connected to the limiting column, one end of the limiting column passes through the support block, one end of the electric push rod is fixedly connected to a connecting plate, and one end of the connecting plate is fixedly connected to the limiting column, two through holes are provided on one side wall of the cushion block, and a first limiting tube and a second limiting tube are fixedly connected to the inner walls of the two through holes, respectively.

[0010] Preferably, a sliding groove is provided on the inner wall of the strip-shaped groove, and a blocking piece is slidably connected to the inner wall of the sliding groove, and the blocking piece is fixedly connected to the support rod.

[0011] Preferably, a limit pin is fixedly connected to the upper surface of the lower clamping block, and one end of the limit pin passes through the upper clamping block, and the limit pin is slidably connected to the upper clamping block.

[0012] Preferably, one side wall of the upper clamping block and the side wall of the lower clamping block are both fixedly connected with a soft copper pad.

[0013] Preferably, a guide rod is fixedly connected to the inner wall of the box body, and the guide rod passes through the fixed block.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention can fix the copper tube by setting a clamping mechanism, and can automatically expand the hole of one of the copper tubes before the two sections of the copper tubes are aligned by setting a hole expanding mechanism, so that one copper tube can be inserted into the other copper tube in the groove during subsequent welding. In this way, the reliability of copper tube welding can be improved and the risk of refrigerant leakage can be reduced during welding. Moreover, when the hole expanding device is used to connect the two sections of the copper tubes, it does not need to be done manually, which is convenient and quick.

[0016] 2. The present invention sets an electric push rod and a limit column for use together. When the copper tube moves to one side of the hole expansion mechanism or the copper tube after hole expansion moves to the side of another section of the copper tube, the electric push rod is started, so that the electric push rod pushes the connecting plate and the limit column to move. After the limit column moves to a certain position, the limit column is inserted into the first limit tube or the second limit tube, so that the limit column can serve as a limit track. In this way, when the cylinder is started and the cylinder pushes the clamping mechanism and the copper tube to move, the stability of the movement of the copper tube and the clamping mechanism can be guaranteed, and one end of the copper tube can be against its hole expansion plug or one end of another copper tube, so as to ensure the accuracy of one end of the copper tube when it is inserted into the docking. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of an air-conditioning copper tube welding device proposed by the present invention;

[0018] Figure 2 This is a schematic diagram of the front cross-section structure of an air-conditioning copper tube welding device proposed by the present invention;

[0019] Figure 3 for Figure 2 The enlarged structural diagram at A in the middle;

[0020] Figure 4 for Figure 2 The enlarged structural diagram at B in the middle;

[0021] Figure 5 This is a schematic diagram of the side cross-section structure of an air-conditioning copper tube welding device proposed by the present invention;

[0022] Figure 6 It is a schematic diagram of the structure enlarged at C in Figure 5;

[0023] Figure 7 This is a partial structural schematic diagram of an air-conditioning copper tube welding device proposed by the present invention;

[0024] Figure 8A schematic diagram of the three-dimensional structure of the clamping mechanism proposed by the present invention;

[0025] Fig. 9 It is a schematic diagram of the three-dimensional structure of the hole expansion mechanism proposed in the present invention.

[0026] In the figure: 1. box body; 2. cushion block; 3. screw rod; 4. fixing block; 5. support rod; 6. strip groove; 7. support block; 8. cylinder; 9. frame; 10. lifting push rod; 11. heater; 12. second motor; 13. C-shaped clamp; 14. expansion hole plug; 15. bolt; 16. lower clamp block; 17. upper clamp block; 18. groove; 19. threaded column; 20. spring; 21. nut; 22. electric push rod; 23. limit ring; 24. limit column; 25. connecting plate; 26. first limit tube; 27. second limit tube; 28. slide groove; 29. ​​baffle; 30. limit pin; 31. soft copper pad; 32. guide rod; 33. first motor. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-Figure 9 , an air-conditioning copper pipe welding device, comprising a box body 1, two clamping mechanisms are arranged above the box body 1, a cushion block 2 is fixedly connected to the upper surface of the box body 1, and a reaming mechanism is fixedly connected to the upper surface of the cushion block 2, one of the clamping mechanisms is fixedly connected to the cushion block 2, a first motor 33 is fixedly connected to the inner wall of the box body 1, and a screw rod 3 is fixedly connected to the driving end of the first motor 33, a fixing block 4 is threadedly sleeved on the outer wall of the screw rod 3, and a support rod 5 is fixedly connected to the upper surface of the fixing block 4, a strip groove 6 is opened on the upper surface of the box body 1, and one end of the support rod 5 passes through the strip groove 6 and extends to the outside of the strip groove 6, one end of the support rod 5 located outside the strip groove 6 is fixedly connected to a support block 7, and the inner wall of the support block 7 is fixedly connected to a cylinder 8, one end of the cylinder 8 is fixedly connected to another clamping mechanism, a frame 9 is fixedly connected to the upper surface of the box body 1, and a lifting push rod 10 is fixedly connected to one side wall of the frame 9, and a heater 11 is fixedly connected to one end of the lifting push rod 10.

[0029] It can be seen from the above structure that: by setting up a clamping mechanism, the copper tube can be fixed, and by setting up a hole expanding mechanism, one of the copper tubes can be automatically expanded before the two sections of the copper tubes are aligned, so that during subsequent welding, one copper tube can be inserted into the other copper tube. In this way, during welding, the reliability of copper tube welding can be improved and the risk of refrigerant leakage can be reduced. When the device expands the hole and connects the two sections of copper tubes, it does not require manual work, which is convenient and quick.

[0030] Furthermore, the reaming mechanism includes a second motor 12 fixedly connected to the pad 2, and the driving end of the second motor 12 is fixedly connected to a C-shaped clamp 13, a reaming plug 14 is arranged in the C-shaped clamp 13, and a bolt 15 is threadedly connected to a side wall of one side of the C-shaped clamp 13, one end of the bolt 15 passes through the C-shaped clamp 13 and abuts against the reaming plug 14; by setting the second motor 12, the C-shaped clamp 13 and the reaming plug 14, the copper tube can be reamed. When in use, the second motor 12 is started so that the second motor 12 drives the C-shaped clamp 13 and the reaming plug 14 to rotate, and then the cylinder 8 is started so that the cylinder 8 pushes the clamping mechanism and the copper tube to move, and the copper tube approaches the reaming plug 14, so that one end of the reaming plug 14 is inserted into the copper tube, causing the copper tube to deform and reaming the copper tube.

[0031] Furthermore, the clamping mechanism includes a lower clamping block 16 and an upper clamping block 17, the upper surface of the lower clamping block 16 is provided with a groove 18, and the inner wall of the groove 18 is fixedly connected with a threaded column 19, one end of the threaded column 19 passes through the upper clamping block 17, the outer wall of the threaded column 19 is sleeved with a spring 20, and one end of the spring 20 is fixedly connected to the inner wall of the groove 18, the other end of the spring 20 is fixedly connected to the upper clamping block 17, and the outer wall of the threaded column 19 is threadedly connected with a nut 21; by setting the lower clamping block 16 and the upper clamping block 17 for use, when connecting two sections of copper pipes, first place the two sections of copper pipes on the lower clamping blocks 16 of the two clamping mechanisms respectively, and then rotate the nut 21 to move the nut 21 downward, the downwardly moved nut 21 can drive the upper clamping block 17 to move downward, and then the upper clamping block 17 clamps the copper pipe placed on the lower clamping block 16, and when loosening the copper pipe, reverse the nut 21, and then the spring 20 can push the upper clamping block 17 to move upward, and the copper pipe can be removed.

[0032] Furthermore, a limiting hole is provided on one side wall of the support block 7, and an electric push rod 22 is fixedly connected to the inner wall of the limiting hole, a limiting ring 23 is fixedly connected to the lower surface of the clamping mechanism, and the inner wall of the limiting ring 23 is slidably connected to a limiting column 24, one end of the limiting column 24 passes through the support block 7, one end of the electric push rod 22 is fixedly connected to a connecting piece 25, and one end of the connecting piece 25 is fixedly connected to the limiting column 24, and two through holes are provided on one side wall of the cushion block 2, and the inner walls of the two through holes are respectively fixedly connected to a first limiting tube 26 and a second limiting tube 27; by setting the electric push rod 22 and the limiting column 24 for use in conjunction with each other, in the copper When the tube moves to one side of the reaming mechanism or the copper tube after reaming moves to the side of another section of the copper tube, the electric push rod 22 is started, so that the electric push rod 22 pushes the connecting piece 25 and the limiting column 24 to move. After the limiting column 24 moves to a certain position, the limiting column 24 is inserted into the first limiting tube 26 or the second limiting tube 27, so that the limiting column 24 can serve as a limiting track. In this way, the cylinder 8 is started, so that when the cylinder 8 pushes the clamping mechanism and the copper tube to move, the stability of the movement of the copper tube and the clamping mechanism can be guaranteed, and one end of the copper tube can be against its reaming plug 14 or one end of another copper tube to ensure the accuracy of the insertion of one end of the copper tube.

[0033] Furthermore, a slide groove 28 is provided on the inner wall of the strip groove 6, and a baffle 29 is slidably connected to the inner wall of the slide groove 28, and the baffle 29 is fixedly connected to the support rod 5; by setting the slide groove 28 and the baffle 29 for use in conjunction, the baffle 29 can also seal the strip groove 6 when the support rod 5 moves, thereby preventing external impurities from falling into the box body 1 through the strip groove 6.

[0034] Furthermore, a limit pin 30 is fixedly connected to the upper surface of the lower clamping block 16, and one end of the limit pin 30 passes through the upper clamping block 17, and the limit pin 30 is slidably connected to the upper clamping block 17; by setting the limit pin 30, the upper clamping block 17 can be limited to ensure the stability of the upper clamping block 17 when moving.

[0035] Furthermore, a soft copper pad 31 is fixedly connected to one side wall of the upper clamping block 17 and the lower clamping block 16 ; by setting the soft copper pad 31 , since copper is soft, the soft copper pad 31 can prevent the upper clamping block 17 and the lower clamping block 16 from clamping the copper tube.

[0036] Furthermore, a guide rod 32 is fixedly connected to the inner wall of the box body 1, and the guide rod 32 passes through the fixed block 4; by setting the guide rod 32, the limit fixed block 4 can be guided, thereby increasing the stability of the fixed block 4 when moving.

[0037] In the present invention, when connecting two sections of copper tubes, firstly, the two sections of copper tubes are placed on the lower clamping blocks 16 of the two clamping mechanisms respectively, and then the nut 21 is rotated to make the nut 21 move downward, and the nut 21 that moves downward can drive the upper clamping block 17 to move downward, so that the upper clamping block 17 clamps the copper tube placed on the lower clamping block 16, and then, the first motor 33 is started, so that the first motor 33 drives the screw rod 3 to rotate, and the rotating screw rod 3 drives the fixed block 4, the support rod 5 and the support block 7 to move, and the moving support block 7 drives a clamping mechanism and the copper tube to move, and when the copper tube moves to one side of the hole expansion mechanism, the second motor 12 is started, so that the second motor 12 drives the C-shaped clamp 13 and the hole expansion plug 14 to rotate, and then the cylinder 8 is started, so that the cylinder 8 pushes the clamping mechanism and the copper tube to move, and the copper tube approaches the hole expansion plug 14, so that one end of the hole expansion plug 14 is inserted into the copper tube, and the hole of the copper tube is expanded;

[0038] After the hole expansion is completed, the cylinder 8 drives the clamping mechanism and the copper tube to reset, and then the first motor 33 is started to drive the screw rod 3 to reverse, and the reversed screw rod 3 drives the expanded copper tube to move toward the side of the other copper tube. After the expanded copper tube moves to the side of the other copper tube, the cylinder 8 is started again, so that the cylinder 8 pushes the clamping mechanism and the expanded copper tube to move. After the expanded copper tube moves to a certain position, one end of the expanded copper tube is sleeved outside the other copper tube, and then the lifting push rod 10 can be started, so that the lifting push rod 10 drives the heater 11 to move, so that the heater 11 heats the connection between the two copper tubes, and then a brazing rod can be placed at the connection between the two copper tubes to melt the brazing rod to connect the two copper tubes.

[0039] When the copper tube moves to one side of the reaming mechanism or the reamed copper tube moves to the other side of the copper tube, the electric push rod 22 is started, so that the electric push rod 22 pushes the connecting piece 25 and the limit column 24 to move. After the limit column 24 moves to a certain position, the limit column 24 is inserted into the first limit tube 26 or the second limit tube 27, so that the limit column 24 can act as a limit rod and a track. In this way, the cylinder 8 is started, so that when the cylinder 8 pushes the clamping mechanism and the copper tube to move, the stability of the movement of the copper tube and the clamping mechanism can be guaranteed, thereby ensuring that one end of the copper tube can be against its reaming plug 14 or one end of another copper tube, so as to ensure the accuracy of the insertion of one end of the copper tube.

[0040] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An air-conditioning copper tube welding device, comprising a box (1), characterized in that: Two clamping mechanisms are arranged above the box body (1); a cushion block (2) is fixedly connected to the upper surface of the box body (1), and a hole expansion mechanism is fixedly connected to the upper surface of the cushion block (2); one of the clamping mechanisms is fixedly connected to the cushion block (2); a first motor (33) is fixedly connected to the inner wall of the box body (1), and a screw rod (3) is fixedly connected to the driving end of the first motor (33); a fixing block (4) is threadedly sleeved on the outer wall of the screw rod (3), and a support rod (5) is fixedly connected to the upper surface of the fixing block (4); and a support rod (5) is provided on the upper surface of the box body (1). A strip groove (6), and one end of the support rod (5) passes through the strip groove (6) and extends to the outside of the strip groove (6), one end of the support rod (5) located outside the strip groove (6) is fixedly connected to a support block (7), and the inner wall of the support block (7) is fixedly connected to a cylinder (8), one end of the cylinder (8) is fixedly connected to another clamping mechanism, the upper surface of the box body (1) is fixedly connected to a frame body (9), and one side wall of the frame body (9) is fixedly connected to a lifting push rod (10), and one end of the lifting push rod (10) is fixedly connected to a heater (11); The clamping mechanism comprises a lower clamping block (16) and an upper clamping block (17); a groove (18) is formed on the upper surface of the lower clamping block (16); and a threaded column (19) is fixedly connected to the inner wall of the groove (18); one end of the threaded column (19) passes through the upper clamping block (17); a spring (20) is sleeved on the outer wall of the threaded column (19); one end of the spring (20) is fixedly connected to the inner wall of the groove (18); the other end of the spring (20) is fixedly connected to the upper clamping block (17); and a nut (21) is threadedly connected to the outer wall of the threaded column (19); A limiting hole is provided on one side wall of the support block (7), and an electric push rod (22) is fixedly connected to the inner wall of the limiting hole; a limiting ring (23) is fixedly connected to the lower surface of the clamping mechanism, and the inner wall of the limiting ring (23) is slidably connected to a limiting column (24); one end of the limiting column (24) passes through the support block (7); one end of the electric push rod (22) is fixedly connected to a connecting piece (25), and one end of the connecting piece (25) is fixedly connected to the limiting column (24); two through holes are provided on one side wall of the cushion block (2), and the inner walls of the two through holes are respectively fixedly connected to a first limiting tube (26) and a second limiting tube (27); The inner wall of the strip groove (6) is provided with a slide groove (28), and the inner wall of the slide groove (28) is slidably connected with a baffle (29), and the baffle (29) is fixedly connected to the support rod (5); A limit pin (30) is fixedly connected to the upper surface of the lower clamping block (16), and one end of the limit pin (30) is arranged to penetrate the upper clamping block (17), and the limit pin (30) is slidably connected to the upper clamping block (17); A guide rod (32) is fixedly connected to the inner wall of the box body (1), and the guide rod (32) passes through the fixed block (4).

2. The air conditioning copper tube welding equipment according to claim 1, characterized in that: The hole-expanding mechanism comprises a second motor (12) fixedly connected to the cushion block (2), and a driving end of the second motor (12) is fixedly connected to a C-shaped clamp (13), a hole-expanding plug block (14) is arranged in the C-shaped clamp (13), and a bolt (15) is threadedly connected to a side wall of one side of the C-shaped clamp (13), and one end of the bolt (15) passes through the C-shaped clamp (13) and abuts against the hole-expanding plug block (14).

3. The air conditioner copper tube welding equipment according to claim 1, characterized in that: A soft copper pad (31) is fixedly connected to one side wall of the upper clamping block (17) and the lower clamping block (16).

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