An air-conditioning copper tube flanging device

Abstract

This application relates to the technical field of copper tube processing, and particularly relates to a flanging device for air-conditioning copper tubes, which includes a workbench. A positioning cylinder and a driving member for driving the positioning cylinder to slide are arranged on the workbench. A punching mechanism for punching the copper tube is arranged inside the positioning cylinder. A clamping mechanism for clamping the copper tube is arranged on the workbench. Flanging holes are formed on the peripheral wall of the positioning cylinder. A flanging block is slidably arranged in the flanging holes. A flanging surface that fits the inner peripheral wall of the flanging part of the copper tube is formed on one side of the flanging block close to the flanging holes. A drawing mechanism for driving the flanging block to move closer to or away from the flanging holes is arranged on the workbench. A positioning surface that fits the outer peripheral wall of the flanging part of the copper tube is formed on one side of the clamping mechanism close to the flanging surface. The positioning surface is parallel to the flanging surface. When flanging the copper tube, the flanging surface and the positioning surface press the flanging of the copper tube into a specific shape. This application has the effect of improving the flanging accuracy of the copper tube.

Description

Technical Field

[0001] This application relates to the technical field of copper tube processing, and in particular to a flanging device for air-conditioning copper tubes. Background Art

[0002] Copper tubes have good thermal conductivity and are widely used in the flow pipelines of air-conditioning refrigerants. When processing copper tubes, flanging treatment is required. Copper tube flanging refers to punching holes in the circumferential wall of the copper tube and turning outwards at the edge position of the punched hole of the copper tube, so as to facilitate welding a connecting pipe at the flanged part of the copper tube.

[0003] In the related art, the utility model patent with the publication number CN206689258U discloses a copper tube flanging head with uniform flanging, including a flanging block, a push rod motor, a positioning column, a first plug rod and a second plug rod. When in use, the user sleeved the copper tube that needs to be flanged after punching on the positioning column, so that the punched hole on the copper tube corresponds to the second jack, starts and operates the push rod motor, and the output rod of the push rod motor pushes the first plug rod to move rightward in the first jack and contacts the bottom end of the second plug rod. The second plug rod is pushed by the right end face of the first plug rod to move upward in the second jack to flange the punched hole on the copper tube.

[0004] In view of the above related art, the inventor believes that when punching the copper tube, since the circumferential wall of the copper tube is punched and the forces on various positions of the circumferential wall of the copper tube are uneven, the punched holes formed in the copper tube are also uneven. When flanging the copper tube, mainly rely on the second plug rod to apply an outward force to the edge position of the punched hole of the copper tube, so as to complete the flanging of the copper tube. When the second plug rod acts on the tube wall of the copper tube, the strength of the edge position of the punched hole of the copper tube is different. After the copper tube is flanged, the deformation degrees of the edge positions of the punched hole of the copper tube are different, and the flanging shape formed by the copper tube is also irregular. At the same time, since the shape of the punched hole of the copper tube is also irregular, it is difficult to control the deformation amount of the copper tube only by relying on the second plug rod, resulting in poor flanging accuracy of the copper tube. Summary of the Invention

[0005] In order to improve the flanging accuracy of copper tubes, this application provides a flanging device for air-conditioning copper tubes.

[0006] A flanging device for air-conditioning copper tubes provided by this application adopts the following technical solutions:

[0007] An air-conditioning copper tube flanging device includes a workbench. A positioning cylinder and a driving member for driving the positioning cylinder to slide are arranged on the workbench. A punching mechanism for punching the copper tube is arranged inside the positioning cylinder. A clamping mechanism for clamping the copper tube is arranged on the workbench. A flanging hole is formed in the peripheral wall of the positioning cylinder. A flanging block is slidably arranged in the flanging hole. A flanging surface that fits the inner peripheral wall of the flanging part of the copper tube is formed on one side of the flanging block close to the flanging hole. A drawing mechanism for driving the flanging block to move closer to or away from the flanging hole is arranged on the workbench. A positioning surface that fits the outer peripheral wall of the flanging part of the copper tube is formed on one side of the clamping mechanism close to the flanging surface. The positioning surface is parallel to the flanging surface.

[0008] By adopting the above technical solution, when processing the copper tube, the copper tube is sleeved on the positioning cylinder, and the copper tube is clamped by the clamping mechanism. Before flanging the copper tube, the punching mechanism punches the peripheral wall of the copper tube. After punching the copper tube, the driving member drives the positioning cylinder to move, so that the flanging hole is coaxial with the punching of the copper tube. The drawing mechanism drives the flanging block to move, so that the flanging surface abuts against the edge position of the punching part of the copper tube. During the process of the drawing mechanism pulling the flanging block. When flanging the copper tube, the drawing mechanism drives the flanging block to move closer to the positioning surface until the inner peripheral wall of the flanging part of the copper tube fits the flanging surface, and the outer peripheral wall of the flanging part of the copper tube fits the positioning surface. The flanging surface and the positioning surface press the flanging of the copper tube into a specific shape. After the flanging surface and the positioning surface cooperate with each other, the flanging precision of the copper tube is improved.

[0009] Preferably, the clamping mechanism includes a first clamping block and a second clamping block for clamping the copper tube, a first air cylinder for driving the first clamping block to move closer to or away from the second clamping block, and a second air cylinder for driving the second clamping block to move closer to or away from the first clamping block. A first clamping groove that fits the tube wall of the copper tube is formed on one side of the first clamping block close to the second clamping block. A second clamping groove that fits the tube wall of the copper tube is formed on one side of the second clamping block close to the first clamping block. The positioning surface is formed on one side of the first clamping block and the second clamping block close to the flanging surface.

[0010] By adopting the above technical solution, when processing the copper tube, the first air cylinder and the second air cylinder drive the first clamping block and the second clamping block to approach each other, so that the groove surfaces of the first clamping groove and the second clamping groove fit the tube wall of the copper tube, improving the stability of the copper tube. When flanging the copper tube, the copper tube is not easily shaken, improving the flanging precision of the copper tube.

[0011] Preferably, the drawing mechanism includes a support frame disposed on the workbench, a lifting plate liftably disposed on the support frame, a rotating motor disposed on the lifting plate, a screw rod coaxially fixed to the output shaft of the rotating motor, and a lifting assembly for driving the lifting plate to move up and down. The axis of the screw rod is in the vertical direction. The flanging hole is opened at the top of the positioning cylinder. A connecting threaded hole in threaded cooperation with the screw rod is opened on the flanging block. Avoidance holes coaxial with the screw rod are opened on one sides of the first clamping block and the second clamping block close to the screw rod.

[0012] By adopting the above technical solution, when flanging the copper tube, the lifting assembly drives the lifting plate to move, so that the screw rod moves close to the flanging block. The rotating motor drives the screw rod to rotate. After the screw rod passes through the avoidance hole, the screw rod is threadedly connected to the flanging block. The rotating motor stops working, and the lifting assembly drives the screw rod to move away from the flanging hole. During the movement of the screw rod, the screw rod pulls the flanging block to move, so that the flanging block acts on the copper tube, facilitating the flanging block to flange the copper tube. After the copper tube is flanged, the lifting assembly drives the flanging block to reset, the rotating motor drives the screw rod to rotate, so that the screw rod disengages from the connecting threaded hole, and then the lifting assembly drives the screw rod to move away from the flanging block.

[0013] Preferably, the lifting assembly includes a lifting motor disposed on the support frame, a lifting lead screw coaxially fixed to the output shaft of the lifting motor, and a guide rod disposed on the support frame. The axes of the lifting lead screw and the guide rod are both in the vertical direction. The lifting lead screw and the guide rod both pass through the lifting plate, and the lifting lead screw is threadedly connected to the lifting plate.

[0014] By adopting the above technical solution, when the lifting plate needs to move, the lifting motor drives the lifting lead screw to rotate. Under the guiding action of the guide rod, the lifting plate moves up and down along the axis direction of the lifting lead screw. This way can enable the lifting plate to stably lift in the vertical direction.

[0015] Preferably, a water spray pipe for cooling the screw rod and the flanging block is disposed on the support frame.

[0016] By adopting the above technical solution, when flanging the copper tube, the water spray pipe sprays water to cool the surfaces of the screw rod, the flanging block and the copper tube, reducing the possibility of thermal deformation of the screw rod, the flanging block and the copper tube, and improving the flanging precision of the copper tube.

[0017] Preferably, the punching mechanism includes a pushing cylinder disposed on the positioning cylinder, an inclined rail fixed to the piston end of the pushing cylinder, and a puncher sleeved on the inclined rail. The inclined rail and the puncher are located inside the positioning cylinder. A punching hole is opened on the peripheral wall of the positioning cylinder. The puncher slides in the punching hole. The inclined rail is inclined to the axis of the positioning cylinder, and the inclined rail inclines toward the side away from the punching hole.

[0018] By adopting the above technical solution, when punching the copper tube, the copper tube is sleeved on the positioning cylinder, the pushing cylinder drives the inclined rail to move, the punch slides along the inclined surface of the inclined rail, and the punch slides in the punching hole, so that the punch acts on the inner wall of the copper tube. During the movement of the punch, the copper tube is punched. After punching the copper tube, the pushing cylinder moves in the reverse direction to drive the punch to reset. This setting facilitates punching the copper tube.

[0019] Preferably, the punching hole is opened below the positioning cylinder, and a debris collection box for collecting copper tube debris is arranged below the punching hole.

[0020] By adopting the above technical solution, when punching the copper tube, after the punch punches the copper tube, copper skin debris is formed at the punching place of the copper tube. The punch knocks off the debris, and the copper tube debris falls into the debris collection box under the action of gravity, which facilitates the recovery of the copper tube debris.

[0021] Preferably, blanking holes are opened on the groove walls of the first clamping groove and the second clamping groove close to the punching hole. The blanking holes are coaxial with the punching hole, the aperture of the blanking hole is the same as the outer diameter of the punch, and the debris collection box is located below the blanking hole.

[0022] By adopting the above technical solution, when punching the peripheral wall of the copper tube, the first clamping groove and the second clamping groove support the outer peripheral wall of the copper tube. The punch moves close to the blanking hole, and the punch knocks off the copper skin of the copper tube. The copper skin falls into the debris collection box through the blanking hole. During the punching process, since the aperture of the punch is the same as that of the blanking hole, the punching precision of the copper tube formed is higher, and at the same time, the edge of the punched hole of the copper tube is smoother, which is convenient for subsequent flanging of the copper tube, making the tube wall of the copper tube smoother after flanging and conducive to improving the flanging precision of the copper tube.

[0023] Preferably, a guiding chamfer is formed at one end of the positioning cylinder away from the driving member.

[0024] By adopting the above technical solution, the guiding chamfer makes it easier for the copper tube to be sleeved on the rotating cylinder.

[0025] Preferably, a rotating cylinder and a driving motor for driving the rotating cylinder to rotate are arranged on the workbench. An electric gripper for clamping the copper tube is arranged at one end of the rotating cylinder, and the positioning cylinder is coaxially arranged with the rotating cylinder.

[0026] By adopting the above technical solution, the electric gripper can clamp the copper tube, improving the stability of the copper tube. After the electric gripper clamps the copper tube, the coaxiality of the copper tube and the positioning cylinder is improved, and the matching precision between the copper tube and the flanging block during the flanging process is improved, which is conducive to improving the flanging precision of the copper tube. And the driving motor can drive the rotating cylinder to rotate, enabling the copper tube to be flipped and facilitating the adjustment of the angle of the copper tube.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. By providing parallel positioning surfaces and flanging surfaces, when flanging the copper tube, the flanging surface and the positioning surface respectively fit against the inner wall and the outer wall of the flanging portion of the copper tube, and the flanging surface and the positioning surface press the flanging of the copper tube into a specific shape, thereby improving the flanging accuracy of the copper tube;

[0029] 2. By providing a first clamping block and a second clamping block, when clamping the copper tube, the groove surfaces of the first clamping groove and the second clamping groove fit against the tube wall of the copper tube, improving the stability of the copper tube. When flanging the copper tube, the copper tube is not easily shaken, improving the flanging accuracy of the copper tube;

[0030] 3. By providing a punching mechanism, after the punching mechanism punches the copper tube, the edge position of the punched hole of the copper tube is smoother. After flanging the copper tube, the tube wall of the copper tube is smoother, which is beneficial to improving the flanging accuracy of the copper tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic diagram showing the overall structure of this embodiment;

[0032] Figure 2 is a schematic diagram showing the internal structure of the positioning cylinder of this embodiment;

[0033] Figure 3 is a schematic diagram showing the structures of the first clamping block and the second clamping block of this embodiment;

[0034] Figure 4 is a cross-sectional view showing the flanging state of the copper tube of this embodiment;

[0035] Figure 5 is a schematic diagram showing the drawing mechanism of this embodiment.

[0036] Reference numerals: 1, workbench; 2, rotating cylinder; 3, driving motor; 4, electric gripper; 5, positioning cylinder; 6, driving member; 7, guiding chamfer; 8, flanging hole; 9, flanging block; 10, flanging surface; 11, clamping mechanism; 111, first clamping block; 112, second clamping block; 113, first cylinder; 114, second cylinder; 12, first clamping groove; 13, second clamping groove; 14, positioning surface; 15, drawing mechanism; 151, support frame; 152, lifting plate; 153, rotating motor; 154, screw rod; 155, lifting assembly; 1551, lifting motor; 1552, lifting screw rod; 1553, guiding rod; 16, avoidance hole; 17, connecting threaded hole; 18, water spray pipe; 19, punching mechanism; 191, pushing cylinder; 192, inclined rail; 193, punch; 20, punching hole; 21, blanking hole; 22, debris collection box. Specific embodiments

[0037] The following will further elaborate on this application Figures 1-5 in conjunction with the accompanying drawings.

[0038] An air conditioner copper tube flanging device disclosed in an embodiment of this application.

[0039] Referring to Figure 1 and Figure 2 , an air conditioner copper tube flanging device includes a workbench 1, a rotating cylinder 2 is installed on the workbench 1, and a driving motor 3 for driving the rotating cylinder 2 to rotate. The axis of the rotating cylinder 2 is horizontal. An electric gripper 4 for clamping the copper tube is installed at the end of the rotating cylinder 2 away from the driving motor 3. The copper tube clamped by the electric gripper 4 is coaxial with the rotating cylinder 2. A positioning cylinder 5 is coaxially installed on the rotating cylinder 2, and the outer diameter of the positioning cylinder 5 is the same as the inner diameter of the copper tube. A driving member 6 for driving the positioning cylinder 5 to move is installed on the rotating cylinder 2. In this embodiment, the driving member 6 is selected as a cylinder, and the piston shaft of the cylinder is parallel to the axis of the rotating cylinder 2. The positioning cylinder 5 is fixed to the piston shaft of the driving member 6. A guiding chamfer 7 is formed at the end of the positioning cylinder 5 away from the rotating cylinder 2, making it easier for the copper tube to be sleeved on the positioning cylinder 5.

[0040] Referring to Figure 2 , a flanging hole 8 is opened on the circumferential wall at the top of the positioning cylinder 5. A flanging block 9 is slidably installed in the flanging hole 8. The flanging block 9 is completely located inside the positioning cylinder 5 without external force. A flanging surface 10 that fits the inner circumferential wall of the flanging part of the copper tube is formed at the top of the flanging block 9, and the flanging surface 10 is a conical surface.

[0041] Referring to Figure 1 and Figure 3 , a clamping mechanism 11 for clamping the copper tube is provided on the workbench 1. The clamping mechanism 11 includes a first clamping block 111, a second clamping block 112, a first cylinder 113, and a second cylinder 114. Both the first cylinder 113 and the second cylinder 114 are detachably installed on the workbench 1 by bolts. The piston shafts of the first cylinder 113 and the second cylinder 114 are horizontal, and the piston shafts of the first cylinder 113 and the second cylinder 114 are perpendicular to the axis of the positioning cylinder 5. The first clamping block 111 is fixed to the piston shaft of the first cylinder 113, and the second clamping block 112 is fixed to the piston shaft of the second cylinder 114. The first cylinder 113 and the second cylinder 114 can drive the first clamping block 111 and the second clamping block 112 to approach or move away from each other.

[0042] Referring to Figure 1 and Figure 3, on one side of the first clamping block 111 close to the second clamping block 112, a first clamping groove 12 that fits the pipe wall of the copper pipe is provided. On one side of the second clamping block 112 close to the first clamping block 111, a second clamping groove 13 that fits the pipe wall of the copper pipe is provided. Since the copper pipe is cylindrical, the cross-sections of the first clamping groove 12 and the second clamping groove 13 are semi-circular grooves that are symmetrical to each other. The top groove surfaces of the first clamping groove 12 and the second clamping groove 13 form a positioning surface 14 that fits the outer peripheral wall of the flanging part of the copper pipe. When the first clamping block 111 and the second clamping block 112 clamp the copper pipe, the positioning surface 14 is a conical surface parallel to the flanging surface 10.

[0043] Referring to Figure 1 and Figure 4 , a drawing mechanism 15 for driving the flanging block 9 to move closer to or away from the positioning surface 14 is installed on the workbench 1. When flanging the copper pipe, the punched copper pipe is sleeved on the positioning cylinder 5, and the electric gripper 4, the first clamping block 111, and the second clamping block 112 clamp the copper pipe. The driving part 6 drives the positioning cylinder 5 to move, so that the punching part of the copper pipe, the flanging hole 8, and the positioning surface 14 are coaxial. The drawing mechanism 15 drives the flanging block 9 to move towards the positioning surface 14, and the flanging block 9 acts on the pipe wall of the copper pipe, driving the pipe wall of the copper pipe to turn outwards until the inner peripheral wall of the flanging part of the copper pipe fits the flanging surface 10, and the outer peripheral wall of the flanging part of the copper pipe fits the positioning surface 14. The flanging surface 10 and the positioning surface 14 press the flanging of the copper pipe into a specific shape, improving the flanging accuracy of the copper pipe.

[0044] Referring to Figure 1 and Figure 5 , the drawing mechanism 15 includes a support frame 151 installed on the workbench 1, a lifting plate 152 installed on the support frame 151 in a lifting manner, a rotating motor 153 fixed to the lifting plate 152, a screw rod 154 coaxially fixed to the output shaft of the rotating motor 153, and a lifting assembly 155 for driving the lifting plate 152 to move. The output shaft of the rotating motor 153 is in the vertical direction, and the output shaft of the rotating motor 153 is vertically downward. The screw rod 154 is located above the first clamping block 111 and the second clamping block 112.

[0045] Referring to Figure 3 and Figure 4 , avoidance holes 16 are provided at the tops of the first clamping block 111 and the second clamping block 112. The avoidance holes 16 are formed by splicing two semi-circular holes. When the first clamping block 111 and the second clamping block 112 clamp the copper pipe, the avoidance holes 16 are coaxial with the screw rod 154 and are coaxial with the positioning surface 14.

[0046] Referring to Figure 4 and Figure 5, a connecting threaded hole 17 that is threadedly engaged with the screw rod 154 is formed in the flanging block 9. When flanging the copper tube, the connecting threaded hole 17, the copper tube punching hole, the avoidance hole 16, and the screw rod 154 are all coaxial. The lifting assembly 155 drives the screw rod 154 to move downward, so that the screw rod 154 passes through the connecting threaded hole 17. At the same time, the rotating motor 153 drives the screw rod 154 to rotate, so that the screw rod 154 is threadedly engaged with the flanging block 9. Then the rotating motor 153 stops rotating, and the lifting assembly 155 drives the screw rod 154 to move upward. The screw rod 154 pulls the flanging block 9 to move upward, so that the flanging block 9 acts on the copper tube to flange the copper tube. After flanging the copper tube, the lifting assembly 155 drives the flanging block 9 to reset. The rotating motor 153 drives the screw rod 154 to rotate in the reverse direction, so that the screw rod 154 disengages from the connecting threaded hole 17. Then the lifting assembly 155 drives the screw rod 154 to move upward to drive the screw rod 154 to reset.

[0047] Referring to Figure 5 , the lifting assembly 155 includes a lifting motor 1551 fixed to the support frame 151, a lifting screw rod 1552 coaxially fixed to the output shaft of the lifting motor 1551, and a guide rod 1553 fixed to the support frame 151. The axes of the lifting screw rod 1552 and the guide rod 1553 are both along the vertical direction. Both the lifting screw rod 1552 and the guide rod 1553 pass through the lifting plate 152, and the lifting screw rod 1552 is threadedly connected to the lifting plate 152. When the lifting motor 1551 works, it drives the lifting screw rod 1552 to rotate, so that the lifting plate 152 moves up and down along the axis direction of the lifting screw rod 1552. By controlling the forward and reverse rotation of the lifting motor 1551, the up and down movement of the lifting plate 152 is controlled.

[0048] Referring to Figure 5 , a water spraying pipe 18 is further installed on the support frame 151. When flanging the copper tube, the water spraying pipe 18 sprays water to cool the surfaces of the screw rod 154, the flanging block 9, and the copper tube, reducing the possibility of thermal deformation of the screw rod 154, the flanging block 9, and the copper tube, and improving the flanging precision of the copper tube.

[0049] Referring to Figure 2 and Figure 3, there is also a punching mechanism 19 for punching the copper tube inside the positioning cylinder 5. The punching mechanism 19 includes a pushing cylinder 191 installed on the positioning cylinder 5, an inclined rail 192 fixed to the piston end of the pushing cylinder 191, and a punch 193 sleeved on the inclined rail 192. The punch 193 is columnar. The piston shaft of the pushing cylinder 191 is parallel to the axis of the positioning cylinder 5. A punching hole 20 is formed in the circumferential wall at the bottom of the positioning cylinder 5, and the axis of the punching hole 20 is in the vertical direction. The punch 193 slides in the punching hole 20. The inclined rail 192 is inclined with respect to the axis of the positioning cylinder 5, and the inclined rail 192 is inclined toward the side away from the punching hole 20. Blanking holes 21 are formed in the bottom groove walls of the first clamping groove 12 and the second clamping groove 13. The blanking holes 21 are formed by splicing two semi-circular holes. When the first clamping block 111 and the second clamping block 112 clamp the copper tube, the blanking holes 21 form circular holes, and the axis of the blanking holes 21 is in the vertical direction. The diameter of the blanking holes 21 is the same as the outer diameter of the punch 193.

[0050] When punching the copper tube, the first clamping block 111 and the second clamping block 112 clamp the copper tube, and the positioning cylinder 5 moves so that the punch 193 is coaxial with the blanking hole 21. The pushing cylinder 191 pushes the inclined rail 192 to move, and the punch 193 slides along the inclined surface of the inclined rail 192. The punch 193 moves downward along the direction of the punching hole 20. The punch 193 acts on the inner wall of the copper tube, and the punch 193 pushes the copper skin of the copper tube into the blanking hole 21. After punching the copper tube, the pushing cylinder 191 drives the inclined rail 192 to move in the reverse direction, driving the punch 193 to reset so that the punch 193 completely enters the inside of the positioning cylinder 5.

[0051] Since the diameter of the blanking hole 21 is the same as the outer diameter of the punch 193, the bottom groove walls of the first clamping groove 12 and the second clamping groove 13 support the edge position of the punched copper tube, making the edge position of the punched copper tube not easily deformed, making the edge position of the punched copper tube smoother, facilitating the subsequent flanging of the copper tube, and making the tube wall of the flanged copper tube smoother, which is beneficial to improving the flanging accuracy of the copper tube.

[0052] Refer to Figure 1 , a debris collection box 22 for recycling the copper skin debris of the copper tube is detachably installed by bolts at the lower position of the workbench 1 below the blanking hole 21, which is convenient for centralized recycling of the debris generated by the copper tube. There is an inclined slide plate between the debris collection box 22 and the blanking hole 21, and the copper skin knocked off by the punch 193 will slide into the debris collection box 22 along the slide plate.

[0053] The implementation principle of an air-conditioning copper tube flanging device according to an embodiment of the present application is as follows: Before flanging the copper tube, the copper tube is first punched. The electric gripper 4 grips the copper tube, and the first clamping block 111 and the second clamping block 112 grip the copper tube. The positioning cylinder 5 moves so that the punch 193 is coaxial with the blanking hole 21. The pushing cylinder 191 pushes the inclined rail 192 to move, and the punch 193 slides along the inclined surface of the inclined rail 192. The punch 193 moves downward along the direction of the punching hole 20. The punch 193 acts on the inner wall of the copper tube, and the punch 193 pushes the copper skin of the copper tube into the blanking hole 21. After punching the copper tube, the pushing cylinder 191 drives the inclined rail 192 to move in the reverse direction, driving the punch 193 to reset.

[0054] After punching the copper tube, the first clamping block 111 and the second clamping block 112 release the grip on the copper tube. The driving motor 3 drives the rotating cylinder 2 and the copper tube to rotate 180°. Then, the first clamping block 111 and the second clamping block 112 grip the copper tube again, so that the connecting threaded hole 17, the copper tube punching hole, the avoidance hole 16, and the screw 154 are all coaxial.

[0055] The lifting motor 1551 drives the lifting lead screw 1552 to rotate, driving the lifting plate 152 and the screw 154 to move closer to the flanging block 9. The rotating motor 153 drives the screw 154 to rotate, so that the screw 154 is in threaded cooperation with the flanging block 9. Then, the rotating motor 153 stops rotating. The lifting assembly 155 drives the screw 154 to move upward. The screw 154 pulls the flanging block 9 to move upward, so that the flanging block 9 acts on the copper tube to flange the copper tube until the inner peripheral wall of the flanged part of the copper tube fits the flanging surface 10, and the outer peripheral wall of the flanged part of the copper tube fits the positioning surface 14. The flanging surface 10 and the positioning surface 14 press the flange of the copper tube into a specific shape, improving the flanging precision of the copper tube.

[0056] After flanging the copper tube, the lifting assembly 155 drives the flanging block 9 to reset. The rotating motor 153 drives the screw 154 to rotate in the reverse direction, so that the screw 154 disengages from the connecting threaded hole 17. Then, the lifting assembly 155 drives the screw 154 to move upward, driving the screw 154 to reset.

[0057] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An air-conditioning copper tube flanging device, characterized in that: It includes a workbench (1), on which a positioning cylinder (5) and a driving member (6) for driving the positioning cylinder (5) to slide are provided. An punching mechanism (19) for punching copper tubes is arranged inside the positioning cylinder (5). A clamping mechanism (11) for clamping copper tubes is provided on the workbench (1). Flanging holes (8) are formed on the peripheral wall of the positioning cylinder (5), and a flanging block (9) is slidably arranged in the flanging holes (8). A flanging surface (10) that fits the inner peripheral wall of the flanging part of the copper tube is formed on one side of the flanging block (9) close to the flanging holes (8). A drawing mechanism (15) for driving the flanging block (9) to move closer to or away from the flanging holes (8) is provided on the workbench (1). A positioning surface (14) that fits the outer peripheral wall of the flanging part of the copper tube is formed on one side of the clamping mechanism (11) close to the flanging surface (10), and the positioning surface (14) is parallel to the flanging surface (10). The clamping mechanism (11) includes a first clamping block (111) and a second clamping block (112) for clamping copper tubes, a first air cylinder (113) for driving the first clamping block (111) to move closer to or away from the second clamping block (112), and a second air cylinder (114) for driving the second clamping block (112) to move closer to or away from the first clamping block (111). A first clamping groove (12) that fits the tube wall of the copper tube is formed on one side of the first clamping block (111) close to the second clamping block (112), and a second clamping groove (13) that fits the tube wall of the copper tube is formed on one side of the second clamping block (112) close to the first clamping block (111). The positioning surface (14) is formed on one side of the first clamping block (111) and the second clamping block (112) close to the flanging surface (10). The drawing mechanism (15) includes a support frame (151) arranged on the workbench (1), a lifting plate (152) arranged on the support frame (151) in a lifting manner, a rotating motor (153) arranged on the lifting plate (152), a screw rod (154) coaxially fixed to the output shaft of the rotating motor (153), and a lifting component (155) for driving the lifting plate (152) to move up and down. The axis of the screw rod (154) is along the vertical direction. The flanging holes (8) are formed at the top of the positioning cylinder (5). A connecting threaded hole (17) that is in threaded fit with the screw rod (154) is formed on the flanging block (9). Avoidance holes (16) coaxial with the screw rod (154) are formed on one side of the first clamping block (111) and the second clamping block (112) close to the screw rod (154).

2. The flanging device for an air-conditioning copper tube according to claim 1, characterized in that: The lifting assembly (155) includes a lifting motor (1551) disposed on the support frame (151), a lifting screw rod (1552) coaxially fixed to the output shaft of the lifting motor (1551), and a guide rod (1553) disposed on the support frame (151). The axes of the lifting screw rod (1552) and the guide rod (1553) are both along the vertical direction. The lifting screw rod (1552) and the guide rod (1553) both pass through the lifting plate (152), and the lifting screw rod (1552) is threadedly connected to the lifting plate (152).

3. The flanging device for air-conditioning copper tubes according to claim 1, characterized in that: A water spray pipe (18) for cooling the screw rod (154) and the flanging block (9) is disposed on the support frame (151).

4. A flanging device for air-conditioning copper tubes according to claim 1, characterized in that: The punching mechanism (19) includes a pushing cylinder (191) disposed on the positioning cylinder (5), an inclined rail (192) fixed to the piston end of the pushing cylinder (191), and a punch (193) sleeved on the inclined rail (192). The inclined rail (192) and the punch (193) are located inside the positioning cylinder (5). A punching hole (20) is formed in the peripheral wall of the positioning cylinder (5). The punch (193) slides in the punching hole (20). The inclined rail (192) is inclined with respect to the axis of the positioning cylinder (5), and the inclined rail (192) inclines towards the side away from the punching hole (20).

5. The flanging device for an air-conditioning copper tube according to claim 4, characterized in that: The punching hole (20) is formed below the positioning cylinder (5), and a debris collection box (22) for recycling copper pipe debris is disposed below the punching hole (20).

6. The flanging device for air-conditioning copper tubes according to claim 5, wherein: Blanking holes (21) are formed in the groove walls of the first clamping groove (12) and the second clamping groove (13) close to the punching hole (20). The blanking holes (21) are coaxial with the punching hole (20), and the diameter of the blanking holes (21) is the same as the outer diameter of the punch (193). The debris collection box (22) is located below the blanking holes (21).

7. An air-conditioning copper tube flanging device according to claim 1, characterized in that: A guiding chamfer (7) is formed at one end of the positioning cylinder (5) away from the driving member (6).

8. A flanging device for an air-conditioning copper tube according to any one of claims 1-7, characterized in that: A rotating cylinder (2) and a driving motor (3) for driving the rotating cylinder (2) to rotate are disposed on the workbench (1). An electric gripper (4) for clamping a copper pipe is disposed at one end of the rotating cylinder (2). The positioning cylinder (5) is coaxially disposed with the rotating cylinder (2).

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