Automatic bending device for air conditioner copper pipe

Abstract

The invention provides an air conditioner copper pipe automatic bending device, and relates to the technical field of copper pipe bending, the air conditioner copper pipe automatic bending device comprises a base, a motor is fixedly installed on the base, a first one-way moving table is slidably arranged on the side, away from the motor, of the base, and a pressing assembly and a first sliding groove are arranged between the motor and the first one-way moving table; a heater is arranged in the first sliding groove in a sliding mode, a mounting plate is fixedly arranged on the rotating part of the motor, a second one-way moving table is arranged on the mounting plate in a sliding mode, a replaceable wheel die is arranged on one side of the mounting plate, and a replaceable clamping die is arranged on the second one-way moving table; a pipe chuck is arranged on the first one-way moving table, plasticity is improved, and deformation is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of copper tube bending, in particular to an automatic bending device for copper tubes of air conditioners. Background Art

[0002] Air-conditioning copper tubes are mainly made of high-purity oxygen-free copper, which has excellent thermal conductivity, corrosion resistance and machinability. Their manufacturing processes include continuous casting and rolling, precision drawing, etc., to ensure uniform wall thickness, precise dimensions and high surface quality. Air-conditioning copper tubes play the role of "blood vessels" for refrigerant transmission in the system, absorbing or releasing heat through the phase change process of the refrigerant to adjust the indoor temperature. According to different needs, automatic bending devices are required to bend the air-conditioning copper tubes into specified shapes.

[0003] As disclosed in a Chinese patent: A pipe bending device for online cutting of the process margin of a catheter, application number: CN202211355469.8, comprising a frame, a mandrel motion control mechanism, a mandrel, an automatic feeding and transferring mechanism, a bending mechanism and a cutting mechanism. The automatic feeding and transferring mechanism is arranged on the frame between the cutting mechanism and the mandrel motion control mechanism. The automatic feeding and transferring mechanism clamps the catheter and extends forward. When the bending mechanism is working, the mandrel retreats under the drive of the mandrel motion control mechanism, and the bending mechanism bends the catheter. A notch is also provided on the mandrel. When the cutting mechanism is working, the mandrel extends forward under the drive of the mandrel motion control mechanism, so that the notch is aligned with the saw blade of the cutting mechanism, and the saw blade extends into the notch when cutting the catheter. At the same time, the automatic feeding and transferring mechanism drives the catheter to rotate, so that the cutting mechanism completes the cutting of the entire circumference of the catheter. The mandrel of the present invention can support the catheter, avoids the problem of the catheter sinking inward, and improves the cutting quality of the catheter.

[0004] However, in the above technical solution, in the air-conditioning manufacturing industry, the copper tube is one of the key components, and its bending quality directly affects the performance and stability of the air-conditioning system. The traditional copper tube bending method often adopts cold bending technology, that is, the copper tube is formed by mechanical force at room temperature. However, during the cold bending process, the copper tube has limited plasticity due to the hardness and ductility of the material itself, which makes the copper tube prone to stress concentration, thinning on the outside, wrinkles on the inside, etc., which in turn affects the sealing and service life of the copper tube. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides an automatic bending device for air-conditioning copper tubes, which can effectively solve the problems in the background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: an automatic bending device for air-conditioning copper tubes, comprising a base, a motor is fixedly mounted on the base, a first one-way movable platform is slidably arranged on the side of the base away from the motor, a clamping assembly and a first slide groove are arranged between the motor and the first one-way movable platform, a heater is slidably arranged in the first slide groove, a mounting plate is fixedly mounted on the rotating part of the motor, a second one-way movable platform is slidably arranged on the mounting plate, a replaceable wheel die is arranged on one side of the mounting plate, a replaceable clamping die is arranged on the second one-way movable platform, and a pipe chuck is arranged on the first one-way movable platform.

[0007] Preferably, a third unidirectional movable platform is arranged on a side of the base away from the mounting plate, and a core rod is arranged on the third unidirectional movable platform.

[0008] Preferably, the clamping assembly includes an assembly base, a first hydraulic rod is fixedly mounted on the assembly base, a slider is fixedly arranged on the first hydraulic rod, a second slide groove and a plurality of first guide slide grooves are arranged on the slider, a first guide slide groove is slidably arranged in the first guide slide groove, a guide rail is slidably arranged in the second slide groove, a third slide groove is arranged on one side of the second slide groove, a clamping die is slidably arranged in the third slide groove, and a second hydraulic rod is arranged on one side of the clamping die.

[0009] Preferably, the component base and the first guide slide block are both fixedly mounted on the base, the second slide groove is located directly below the third slide groove on the slide block, and the second hydraulic rod is fixedly mounted in the third slide groove.

[0010] Preferably, the guide rail includes a guide rail base, a guide groove and two second guide grooves are provided on the guide rail base, a second guide slider is slidably provided in the second guide groove, a plurality of guide rotating columns are provided in the guide groove, a threaded groove is provided between the two second guide grooves, a rotating threaded column is provided in the threaded groove, the rotating threaded column is rotatably connected to the slider, and a knob is provided on the rotating threaded column.

[0011] Preferably, the second guide slider is fixedly mounted on the slider, and one side of the rotating threaded column rotates through the slider.

[0012] Preferably, the pressing die includes a pressing die base, a plurality of third guide grooves are arranged on one side of the pressing die base, a third guide slide block is slidably arranged in the third guide groove, a die head mounting groove and a plurality of fourth slide grooves are arranged on the side of the pressing die base away from the third guide groove, a replaceable first pressing die head is arranged in the die head mounting groove, a supporting slide block is slidably arranged in the fourth slide groove, and a replaceable second pressing die head is arranged on the supporting slide block.

[0013] Preferably, the clamping die base is fixedly connected to the second hydraulic rod, and the supporting slide block is rotatably connected to the guide rotating column.

[0014] Preferably, the heater includes a heater base, a medium frequency induction heating coil is arranged on the heater base, a plurality of fourth guide grooves are arranged on one side of the heater base, a fourth guide slider is slidably arranged in the fourth guide groove, a plurality of connecting grooves are arranged between the fourth guide groove and the medium frequency induction heating coil, and a connecting rod is slidably arranged in the connecting groove.

[0015] Preferably, the fourth guide slide block is fixedly installed in the first slide groove, and one side of the connecting rod is fixedly connected to the guide rail base.

[0016] The present invention provides an automatic bending device for air-conditioning copper tubes. It has the following beneficial effects: (1) The present invention first sets the copper tube on the core rod and clamps the copper tube with a tube chuck. Then, a part of the core rod and a part of the copper tube are moved to the wheel die through the medium frequency induction heating coil by the third unidirectional movable table and the first unidirectional movable table respectively. During this period, the bending part of the copper tube is heated by the medium frequency induction heating coil to improve the plasticity and reduce deformation. Then, the copper tube is clamped by the clamping assembly, and the clamping die is fitted with the wheel die by the second unidirectional movable table. Then, the mounting plate is rotated by the motor, and the mounting plate drives the clamping die and the wheel die to rotate to bend the copper tube, thereby completing the bending of the copper tube.

[0017] (2) In the present invention, when the second hydraulic rod is used to move the pressing die in a direction away from the first unidirectional movable platform, the guide rotating column drives the supporting slider to move, so that the supporting sliders move toward the copper tube one by one, and the supporting slider drives the second pressing die head to move. The second pressing die head is used to press the copper tube when it is bent, thereby compensating for the insufficient pressing of the first pressing die head and completing the pressing stroke. The pressing stroke of the copper tube can be changed accordingly as the bending angle of the copper tube changes, so as to better adapt to copper tubes of different specifications and improve the versatility of the equipment.

[0018] (3) After the wheel die is replaced, when the initial supplementary stroke of the pressing die needs to be changed, part of the supporting slider is moved toward the copper tube through the guide rotating column, so that part of the second pressing die head is on the same parallel line as the first pressing die head during the initial pressing, thereby completing the change of the initial supplementary stroke of the pressing die to adapt to wheel dies of different sizes.

[0019] (4) When the initial position of the guide rail base is changed, the guide rail base drives the heater base to move away from or close to the wheel mold through the connecting rod, so that the position of the medium frequency induction heating coil changes with the change of the initial position of the guide rail base, thereby further adapting to wheel molds of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the top view structure of the present invention; Figure 3 It is a structural schematic diagram of the pressing assembly in the present invention; Figure 4 It is a side view structural schematic diagram of the clamping assembly in the present invention; Figure 5 It is a structural schematic diagram of the guide rail in the present invention; Figure 6 It is a schematic diagram of the top view structure of the guide rail in the present invention; Figure 7 It is a structural schematic diagram of the pressing die in the present invention; Figure 8 It is a bottom view structural schematic diagram of the pressing die in the present invention; Fig. 9 It is a schematic diagram of the structure of the heater in the present invention.

[0021] Among them, 1. base; 2. motor; 3. first unidirectional moving platform; 4. clamping assembly; 401. assembly base; 402. first hydraulic rod; 403. slider; 404. second slide groove; 405. first guide slide groove; 406. first guide slide block; 407. guide rail; 40701. guide rail base; 40702. guide groove; 40703. second guide slide groove; 40704. second guide slide block; 40705. guide rotating column; 40706. thread groove; 40707. rotating thread column; 40708. knob; 408. third slide groove; 409. clamping die; 40901. clamping die base; 40902. The third guide chute; 40903, the third guide slider; 40904, the die head mounting groove; 40905, the fourth chute; 40906, the first clamping die head; 40907, the supporting slider; 40908, the second clamping die head; 4010, the second hydraulic rod; 5, the first chute; 6, the heater; 601, the heater base; 602, the medium frequency induction heating coil; 603, the fourth guide chute; 604, the fourth guide slider; 605, the connecting chute; 606, the connecting rod; 7, the mounting plate; 8, the second unidirectional movable platform; 9, the wheel mold; 10, the clamping mold; 11, the pipe chuck; 12, the third unidirectional movable platform; 13, the core rod. DETAILED DESCRIPTION

[0022] 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.

[0023] Example: like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides an automatic bending device for copper tubes of air conditioners, comprising a base 1, on which a motor 2 is fixedly mounted, a first one-way movable platform 3 is slidably arranged on a side of the base 1 away from the motor 2, a clamping assembly 4 and a first slide groove 5 are arranged between the motor 2 and the first one-way movable platform 3, a heater 6 is slidably arranged in the first slide groove 5, a mounting plate 7 is fixedly arranged on the rotating part of the motor 2, a second one-way movable platform 8 is slidably arranged on the mounting plate 7, a replaceable wheel die 9 is arranged on one side of the mounting plate 7, a replaceable clamping die 10 is arranged on the second one-way movable platform 8, and a pipe chuck 11 is arranged on the first one-way movable platform 3.

[0024] like Figure 3 and Figure 4 As shown, the clamping assembly 4 includes an assembly base 401, a first hydraulic rod 402 is fixedly mounted on the assembly base 401, a slider 403 is fixedly arranged on the first hydraulic rod 402, a second slide groove 404 and a plurality of first guide slide grooves 405 are arranged on the slider 403, a first guide slide groove 405 is slidably arranged in the first guide slide groove 405, a guide rail 407 is slidably arranged in the second slide groove 404, a third slide groove 408 is arranged on one side of the second slide groove 404, a clamping die 409 is slidably arranged in the third slide groove 408, and a second hydraulic rod 4010 is arranged on one side of the clamping die 409.

[0025] Through the above technical solution, when the copper tube needs to be compressed, the slider 403 is first moved toward the copper tube through the first hydraulic rod 402, and then the slider 403 drives the compression mold 409 to move, and the copper tube is compressed by the compression mold 409. When the copper tube is subsequently bent, the compression mold 409 is moved away from the first unidirectional movable platform 3 through the second hydraulic rod 4010, and the copper tube during the bending operation is continued to be compressed. At the same time, when the compression mold 409 moves away from the first unidirectional movable platform 3, the position of some parts of the compression mold 409 is changed through the guide rail 407, and the missing part of the compression stroke of the compression mold 409 is supplemented.

[0026] like Figure 5 and Figure 6As shown, the guide rail 407 includes a guide rail base 40701, and a guide groove 40702 and two second guide grooves 40703 are arranged on the guide rail base 40701, and a second guide slider 40704 is slidably arranged in the second guide groove 40703, and a plurality of guide rotating columns 40705 are arranged in the guide groove 40702, and a thread groove 40706 is arranged between the two second guide grooves 40703, and a rotating thread column 40707 is arranged in the thread groove 40706, and the rotating thread column 40707 is rotatably connected with the slider 403, and a knob 40708 is arranged on the rotating thread column 40707.

[0027] Through the above technical solution, when the pressing die 409 is moved in a direction away from the first unidirectional movable platform 3 by the second hydraulic rod 4010, the pressing die 409 drives the guide rotating column 40705 to move, so that the guide rotating column 40705 moves along the track of the guide groove 40702, and the guide rotating column 40705 makes some parts of the pressing die 409 gradually move in a direction close to the heater 6, and the positions of some parts of the pressing die 409 are changed to make up for the missing part of the pressing stroke of the pressing die 409; After the wheel mold 9 is replaced, the knob 40708 is turned, and the knob 40708 drives the rotating threaded column 40707 to rotate. The guide rail base 40701 is moved by rotating the threaded column 40707 and the threaded groove 40706, and the initial position of the guide rail base 40701 is changed. Then the guide rotating column 40705 moves along the trajectory of the guide groove 40702. The guide rotating column 40705 causes some parts of the clamping mold 409 to gradually move toward the direction close to the heater 6, thereby changing the initial position of the guide rail base 40701 and changing the initial supplementary stroke of the clamping mold 409, so that it can adapt to wheel molds 9 of different sizes.

[0028] like Figure 7 and Figure 8 As shown, the pressing die 409 includes a pressing die base 40901, a plurality of third guide grooves 40902 are arranged on one side of the pressing die base 40901, a third guide slider 40903 is slidably arranged in the third guide groove 40902, a die head mounting groove 40904 and a plurality of fourth sliders 40905 are arranged on the side of the pressing die base 40901 away from the third guide groove 40902, a replaceable first pressing die head 40906 is arranged in the die head mounting groove 40904, a support slider 40907 is slidably arranged in the fourth groove 40905, and a replaceable second pressing die head 40908 is arranged on the support slider 40907.

[0029] Through the above technical solution, when the copper tube needs to be compressed, the slider 403 drives the compression mold base 40901 to move toward the copper tube. At the same time, since the compression mold base 40901 is L-shaped, the compression mold base 40901 will not interfere with the heater 6. The compression mold base 40901 drives the first compression mold head 40906 to move, and the first compression mold head 40906 is used to initially compress the copper tube. When the pressing die 409 is moved away from the first unidirectional movable platform 3 by the second hydraulic rod 4010, the guide rotating column 40705 drives the supporting slider 40907 to move, so that the supporting slider 40907 moves toward the copper tube one by one, and the supporting slider 40907 drives the second pressing die head 40908 to move, and the second pressing die head 40908 presses the copper tube when the copper tube is bent, thereby making up for the insufficient pressing of the first pressing die head 40906, completing the pressing stroke, and the pressing stroke of the copper tube can be changed accordingly with the change of the bending angle of the copper tube, which can better adapt to copper tubes of different specifications and improve the versatility of the equipment; When it is necessary to change the initial complementary stroke of the clamping die 409, part of the supporting slider 40907 is moved toward the copper tube through the guiding rotating column 40705, so that part of the second clamping die head 40908 is on the same parallel line with the first clamping die head 40906 during the initial clamping, thereby completing the change of the initial complementary stroke of the clamping die 409 to adapt to wheel dies 9 of different sizes.

[0030] like Fig. 9 As shown, the heater 6 includes a heater base 601, on which a medium frequency induction heating coil 602 is arranged, a plurality of fourth guide grooves 603 are arranged on one side of the heater base 601, a fourth guide slider 604 is slidably arranged in the fourth guide groove 603, a plurality of connecting grooves 605 are arranged between the fourth guide groove 603 and the medium frequency induction heating coil 602, and a connecting rod 606 is slidably arranged in the connecting groove 605.

[0031] Through the above technical solution, when the copper tube is bent, the copper tube passes through the medium frequency induction heating coil 602, and the medium frequency induction heating coil 602 is used to heat the copper tube at the next bending. When the guide rail base 40701 moves toward the copper tube, the guide rail base 40701 drives the connecting rod 606 to move in the connecting slide groove 605, so that the position of the heater base 601 cannot be changed. When the initial position of the guide rail base 40701 is changed, the guide rail base 40701 drives the heater base 601 to move away from or close to the wheel mold 9 through the connecting rod 606, so that the position of the medium frequency induction heating coil 602 changes with the change of the initial position of the guide rail base 40701, further adapting to wheel molds 9 of different sizes.

[0032] Working principle: The present invention first sets the copper tube on the core rod 13, and clamps and fixes the copper tube by the tube chuck 11, and then respectively moves a part of the core rod 13 and a part of the copper tube through the medium frequency induction heating coil 602 to the wheel die 9 by the third unidirectional movable platform 12 and the first unidirectional movable platform 3. During this period, the medium frequency induction heating coil 602 is used to heat the bending part of the copper tube to improve plasticity and reduce deformation. Subsequently, the copper tube is clamped by the clamping assembly 4, and the clamping die 10 is fitted with the wheel die 9 by the second unidirectional movable platform 8. Then, the mounting plate 7 is rotated by the motor 2, and the mounting plate 7 drives the clamping die 10 and the wheel die 9 to rotate to bend the copper tube, thereby completing the bending of the copper tube.

[0033] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. An automatic bending device for an air-conditioning copper tube, comprising a base (1), characterized in that: A motor (2) is fixedly mounted on the base (1); a first unidirectional movable platform (3) is slidably arranged on a side of the base (1) away from the motor (2); a clamping assembly (4) and a first slide groove (5) are arranged between the motor (2) and the first unidirectional movable platform (3); a heater (6) is slidably arranged in the first slide groove (5); a mounting plate (7) is fixedly mounted on the rotating part of the motor (2); a second unidirectional movable platform (8) is slidably arranged on the mounting plate (7); a replaceable wheel die (9) is arranged on one side of the mounting plate (7); a replaceable clamping die (10) is arranged on the second unidirectional movable platform (8); and a pipe chuck (11) is arranged on the first unidirectional movable platform (3).

2. The automatic bending device for air-conditioning copper tubes according to claim 1 is characterized in that: A third unidirectional movable platform (12) is arranged on a side of the base (1) away from the mounting plate (7), and a core rod (13) is arranged on the third unidirectional movable platform (12).

3. The automatic bending device for air-conditioning copper tubes according to claim 2 is characterized in that: The clamping assembly (4) comprises an assembly base (401), a first hydraulic rod (402) is fixedly mounted on the assembly base (401), a slider (403) is fixedly arranged on the first hydraulic rod (402), a second slide groove (404) and a plurality of first guide slide grooves (405) are arranged on the slider (403), a first guide slide groove (406) is slidably arranged in the first guide slide groove (405), a guide rail (407) is slidably arranged in the second slide groove (404), a third slide groove (408) is arranged on one side of the second slide groove (404), a clamping die (409) is slidably arranged in the third slide groove (408), and a second hydraulic rod (4010) is arranged on one side of the clamping die (409).

4. The automatic bending device for air-conditioning copper tubes according to claim 3 is characterized in that: The component base (401) and the first guide slide block (406) are both fixedly mounted on the base (1); the second slide groove (404) is located directly below the third slide groove (408) on the slide block (403); and the second hydraulic rod (4010) is fixedly mounted in the third slide groove (408).

5. The automatic bending device for air-conditioning copper tubes according to claim 4 is characterized in that: The guide rail (407) comprises a guide rail base (40701), the guide rail base (40701) is provided with a guide groove (40702) and two second guide grooves (40703), a second guide slider (40704) is slidably provided in the second guide groove (40703), a plurality of guide rotating columns (40705) are provided in the guide groove (40702), a thread groove (40706) is provided between the two second guide grooves (40703), a rotating thread column (40707) is provided in the thread groove (40706), the rotating thread column (40707) is rotatably connected to the slider (403), and a knob (40708) is provided on the rotating thread column (40707).

6. The automatic bending device for air-conditioning copper tubes according to claim 5, characterized in that: The second guide slider (40704) is fixedly mounted on the slider (403), and one side of the rotating threaded column (40707) rotates through the slider (403).

7. The automatic bending device for air-conditioning copper tubes according to claim 6, characterized in that: The pressing die (409) comprises a pressing die base (40901), a plurality of third guide grooves (40902) are arranged on one side of the pressing die base (40901), a third guide slider (40903) is slidably arranged in the third guide groove (40902), a die head mounting groove (40904) and a plurality of fourth sliders (40905) are arranged on the side of the pressing die base (40901) away from the third guide groove (40902), a replaceable first pressing die head (40906) is arranged in the die head mounting groove (40904), a support slider (40907) is slidably arranged in the fourth slider (40905), and a replaceable second pressing die head (40908) is arranged on the support slider (40907).

8. The automatic bending device for air-conditioning copper tubes according to claim 7, characterized in that: The pressing die base (40901) is fixedly connected to the second hydraulic rod (4010), and the supporting sliding block (40907) is rotatably connected to the guide rotating column (40705).

9. The automatic bending device for air-conditioning copper tubes according to claim 8, characterized in that: The heater (6) comprises a heater base (601), a medium frequency induction heating coil (602) is arranged on the heater base (601), a plurality of fourth guide slots (603) are arranged on one side of the heater base (601), a fourth guide slider (604) is slidably arranged in the fourth guide slots (603), a plurality of connecting slots (605) are arranged between the fourth guide slots (603) and the medium frequency induction heating coil (602), and a connecting rod (606) is slidably arranged in the connecting slots (605).

10. The automatic bending device for air-conditioning copper tubes according to claim 9, characterized in that: The fourth guide slide block (604) is fixedly mounted in the first slide groove (5), and one side of the connecting rod (606) is fixedly connected to the guide rail base (40701).

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