阅读说明：本技术 空调热交器毛细管的折弯工装及其折弯方法 (Bending tool and method for capillary tube of air conditioner heat exchanger ) 是由 涂云辉 刘云铠 陈千驹 罗明燕 朱婷婷 吴海新 樊小虎 吴永训 叶利杞 于 2021-07-30 设计创作，主要内容包括：本发明提供了一种空调热交器毛细管的折弯工装,适用于空调热交器的毛细管的折弯,包括支撑架以及设置于支撑架上的夹具、第一折弯组件和第二折弯组件,支撑架上可拆卸的设置有顶板和侧板,夹具呈滑动的设置于支撑架上,夹具用于夹紧毛细管,第一折弯组件设置于顶板上,第二折弯组件呈活动的设置于支撑架内,支撑架内设置有与支撑架联动的旋转轴,旋转轴转动以带动支撑架转动以使第二折弯组件凸伸出支撑架外。本发明还明提供了一种使用上述的空调热交器毛细管的折弯工装对毛细管进行折弯固定的折弯方法。(The invention provides a bending tool for a capillary tube of an air-conditioning heat exchanger, which is suitable for bending the capillary tube of the air-conditioning heat exchanger and comprises a support frame, a clamp, a first bending assembly and a second bending assembly, wherein the clamp, the first bending assembly and the second bending assembly are arranged on the support frame, the top plate and the side plate are detachably arranged on the support frame, the clamp is arranged on the support frame in a sliding manner and is used for clamping the capillary tube, the first bending assembly is arranged on the top plate, the second bending assembly is movably arranged in the support frame, a rotating shaft linked with the support frame is arranged in the support frame, and the rotating shaft rotates to drive the support frame to rotate so that the second bending assembly protrudes out of the support frame. The invention further provides a bending method for bending and fixing the capillary tube by using the bending tool for the capillary tube of the air-conditioning heat exchanger.)

1. The utility model provides a frock of bending of air conditioner heat exchanger capillary, is applicable to bending of heat exchanger's capillary in the air conditioner, a serial communication port, including the support frame and set up in anchor clamps, first subassembly and the second subassembly of bending on the support frame, detachable is provided with roof and curb plate on the support frame, anchor clamps be gliding set up in on the support frame, anchor clamps are used for pressing from both sides tightly the capillary, first subassembly of bending set up in on the roof, the second subassembly of bending be the activity set up in the support frame, be provided with in the support frame with the rotation axis of support frame linkage, the rotation axis rotates in order to drive the support frame rotates so that the second subassembly of bending is protruding to be stretched out outside the support frame.

2. The air conditioner heat exchanger capillary tube bending tool according to claim 1, wherein one end of the support frame is provided with a rail for the clamp to slide, and the clamp slides along the rail so as to bend capillary tubes of various lengths.

3. The air conditioner heat exchanger capillary bending tool according to claim 2, wherein the clamp comprises a bottom plate capable of sliding along the rail and a clamping assembly slidably arranged on the bottom plate, a sliding groove for the clamping assembly to slide is formed in the bottom plate, and the extending direction of the sliding groove is perpendicular to the extending direction of the rail.

4. The air conditioner heat exchanger capillary bending tool according to claim 3, wherein the clamping assembly comprises a first clamping piece and a second clamping piece, the first clamping piece and the second clamping piece are matched to form an accommodating cavity for accommodating the capillary, the second clamping piece is far away from the first clamping piece in the first direction by operating the second clamping piece so that the capillary can be placed in the accommodating cavity, and the second clamping piece is stopped to be close to the first clamping piece so that the capillary in the accommodating cavity can be locked.

5. The air conditioner heat exchanger capillary bending tool according to claim 1, wherein the second bending assemblies are arranged on two sides of the support frame, each second bending assembly comprises a plurality of circular mandrels, a movable space for the circular mandrels to move is arranged on one side edge of the support frame, each movable space comprises a first side wall and a second side wall, accommodating holes for the circular mandrels to penetrate through are formed in the first side wall and the second side wall, and the circular mandrels are located in the accommodating holes in the first side wall and the second side wall and move between the first side wall and the second side wall along the accommodating holes.

6. The air conditioner heat exchanger capillary tube bending tool according to claim 5, wherein a protruding limiting portion is arranged in the middle of the circular core rod, and the circular core rod is enabled to move between the first side wall and the second side wall all the time through the limiting portion.

7. The air conditioner heat exchanger capillary bending tool according to claim 6, wherein a first through hole through which the circular core rod can pass is formed in the side plate, the rotating shaft rotates to enable the circular core rod to move between the first side wall and the second side wall and to pass through the first through hole in the side wall, a second through hole through which the capillary is positioned is further formed in the side plate, and the capillary sequentially passes through the first bending assembly and the second bending assembly and is positioned in the second through hole so as to be fixed.

8. The air conditioner heat exchanger capillary tube bending tool according to claim 1, wherein a plurality of partition plates are arranged in the support frame, the rotating shaft sequentially penetrates through the plurality of partition plates, and the rotating shaft rotates to drive the plurality of partition plates and the support frame to rotate.

9. The bending tool for the capillary tube of the air-conditioning heat exchanger according to claim 1, further comprising fixing seats, wherein the fixing seats are arranged at two ends of the supporting frame, the rotating shaft penetrates through the supporting frame, two ends of the rotating shaft are located on the two fixing seats, a rotating handle is arranged at one end of the rotating shaft, and the rotating shaft drives the supporting frame to rotate around the two fixing seats by operating the rotating handle.

10. A bending method for fixedly bending the capillary tube by using the bending tool for the capillary tube of the air-conditioning heat exchanger according to any one of claims 1 to 9, which is characterized by comprising the following steps of:

adjusting the position of the clamp on the support frame by the capillary tube to be bent, so that the clamp can clamp and fix the capillary tube at a proper position, and the clamp can be matched with a corresponding top plate;

selecting a proper top plate and a proper side plate for a capillary tube to be bent, and installing the top plate and the side plate on the support frame;

mounting the first bending assembly on the top plate;

the rotating shaft is used for driving the support frame to rotate for a preset angle, so that a second bending assembly positioned in the support frame moves in the support frame and protrudes out of the support frame or the side plate;

fixing the rotated support frame through the rotating shaft;

a plurality of capillaries form a capillary assembly, the capillary assembly is fixed in the clamp and one of the capillaries is bent, the capillary firstly passes through one or more bending core rods on the first bending assembly, then the capillary passes through one or more circular core rods on the second bending assembly, and then the end part of the capillary is positioned and fixed on a corresponding position on the side plate;

and sequentially bending all the capillary tubes on the capillary tube assembly, respectively positioning and fixing the bent capillary tubes by using a fixing part, and finally taking down the bent and fixed capillary tube assembly from a bending tool of the capillary tube of the air-conditioning heat exchanger and welding the bent and fixed capillary tube assembly on the heat exchanger.

Technical Field

The invention relates to the technical field of bending processing, in particular to a bending tool and a bending method for a capillary tube of an air-conditioning heat exchanger.

Background

Each air conditioner is provided with a capillary tube matched with a refrigerating system of the air conditioner, the length of the capillary tube is determined according to the requirement of the air conditioner, and air conditioners with different powers are provided with capillary tubes with different lengths and inner diameters. The traditional air conditioner heat exchange capillary tube is generally shaped manually, the length of the capillary tube is generally long, the manual shaping can cause poor product consistency, the capillary tubes can also have the risk of tube collision, and the production efficiency is low.

Therefore, it is necessary to provide a bending tool for an air conditioner heat exchanger capillary tube, which can be formed quickly, has high production efficiency and good product consistency.

Disclosure of Invention

The invention aims to provide a bending tool for an air conditioner heat exchanger capillary tube, which can be quickly formed and has high production efficiency and good product consistency.

The invention also aims to provide a bending method for bending by using the bending tool for the capillary tube of the air-conditioning heat exchanger.

In order to achieve the purpose, the invention provides a bending tool for a capillary tube of an air-conditioning heat exchanger, which is suitable for bending the capillary tube of the air-conditioning heat exchanger and comprises a support frame, a clamp, a first bending assembly and a second bending assembly, wherein the clamp, the first bending assembly and the second bending assembly are arranged on the support frame, the top plate and the side plate are detachably arranged on the support frame, the clamp is slidably arranged on the support frame and is used for clamping the capillary tube, the first bending assembly is arranged on the top plate, the second bending assembly is movably arranged in the support frame, a rotating shaft linked with the support frame is arranged in the support frame, and the rotating shaft rotates to drive the support frame to rotate so that the second bending assembly protrudes out of the support frame.

Preferably, one end of the supporting frame is provided with a rail for the clamp to slide, and the clamp slides along the rail so as to bend capillaries with various lengths.

Preferably, the clamp comprises a bottom plate capable of sliding along the rail and a material clamping assembly slidably arranged on the bottom plate, a sliding groove for the material clamping assembly to slide is formed in the bottom plate, and the extending direction of the sliding groove is perpendicular to the extending direction of the rail.

Preferably, the clamping assembly includes a first clamping member and a second clamping member, the first clamping member and the second clamping member cooperate to form an accommodating cavity for accommodating the capillary, the second clamping member is operated to be away from the first clamping member in the first direction so as to place the capillary in the accommodating cavity, and the second clamping member is stopped to be operated so as to be close to the first clamping member so as to lock the capillary in the accommodating cavity.

Preferably, the first bending assembly includes a plurality of bending mandrels, each of which is detachably mounted on the top plate.

Preferably, the two sides of the support frame are provided with second bending assemblies, each second bending assembly comprises a plurality of circular mandrels, the side edges of the support frame are provided with movable spaces for the circular mandrels to move, each movable space comprises a first side wall and a second side wall, accommodating holes for the circular mandrels to pass through are formed in the first side wall and the second side wall, and the circular mandrels are located in the accommodating holes in the first side wall and the second side wall and move between the first side wall and the second side wall along the accommodating holes.

Preferably, the middle of the circular core rod is provided with a protruding limiting part, and the circular core rod can move between the first side wall and the second side wall all the time by means of the limiting part.

Preferably, a first through hole through which the circular core rod can pass is formed in the side plate, the rotating shaft rotates to enable the circular core rod to move between the first side wall and the second side wall and to pass through the first through hole in the side wall, a second through hole for positioning the capillary tube is further formed in the side plate, and the capillary tube sequentially passes through the first bending assembly and the second bending assembly and is positioned in the second through hole so as to be fixed.

Preferably, a plurality of clapboards are arranged in the support frame, the rotating shaft sequentially penetrates through the clapboards, and the rotating shaft rotates to drive the clapboards and the support frame to rotate.

Preferably, the frock of bending of air conditioner heat exchanger capillary still includes the fixing base, and the both ends of support frame all are provided with the fixing base, and the rotation axis passes support frame and both ends are located two fixing bases, and the one end of rotation axis is provided with twist grip, borrows so that the rotation axis drives the support frame and rotates around two fixing bases by operating twist grip.

After the technical scheme is adopted, the bending tool for the capillary tube of the air-conditioning heat exchanger is used for bending the capillary tube in the air conditioner. The air conditioner heat exchanger capillary bending tool comprises a support frame, a rotating shaft, a clamp, a first bending assembly and a second bending assembly, wherein the rotating shaft, the clamp, the first bending assembly and the second bending assembly are arranged on the support frame, a plurality of partition plates are arranged in the support frame, the rotating shaft sequentially penetrates through the support frame and the two ends of the plurality of partition plates in the support frame, the two ends of the rotating shaft are respectively placed on a fixing seat, and the rotating shaft rotates and drives the support frame to rotate around the fixing seat. The clamp is used for clamping and fixing the capillary tube. Because air conditioners of different types correspond to capillaries of different lengths and inner diameters, the top plate and the side plate on the support frame can be replaced by different top plates and side plates aiming at the bending of different capillaries. And after the top plate is installed, installing a first bending component on the top plate. The curb plate can be opened according to actual need or not set up first through-hole, and outside first through-hole was used for supplying the second subassembly activity of bending to stretch out the curb plate, the second through-hole has still been seted up on the curb plate, and the second through-hole is used for the location of the capillary after bending to fix the capillary after bending, so that do not have relative motion between the capillary, avoid damaging etc. take off the fixed capillary of bending at last, weld on the heat exchanger of air conditioner. The bending tool for the capillary tube of the air-conditioning heat exchanger is simple in structure, suitable for bending various air-conditioning capillary tubes, good in uniformity of the bent capillary tube, multipurpose, simple and convenient to operate and capable of greatly improving production efficiency.

In order to achieve the other purpose, the invention provides a bending method for bending and fixing a capillary tube by using the bending tool for the capillary tube of the air-conditioning heat exchanger, which comprises the following steps:

the position of a clamp is adjusted on a support frame by a capillary tube to be bent, so that the clamp can clamp and fix the capillary tube at a proper position and can be matched with a corresponding top plate;

selecting a proper top plate and a proper side plate for the capillary tube to be bent, and installing the top plate and the side plate on the support frame;

mounting a first bending assembly on the top plate;

the rotating shaft is used for driving the support frame to rotate for a preset angle, so that the second bending assembly positioned in the support frame moves in the support frame and protrudes out of the support frame or the side plate;

fixing the rotated support frame through a rotating shaft;

the capillary tube assembly is fixed in the fixture, one capillary tube is bent, the capillary tube firstly passes through one or more bending core rods on the first bending assembly, then passes through one or more round core rods on the second bending assembly, and then the end part of the capillary tube is positioned and fixed on the corresponding position on the side plate;

and sequentially bending all the capillaries on the capillary assembly, respectively positioning and fixing the bent capillaries by using a fixing part, and finally taking down the bent and fixed capillary assembly from a bending tool of the capillary of the air-conditioning heat exchanger and welding the bent and fixed capillary assembly on the heat exchanger.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a bending tool for an air conditioner heat exchanger capillary according to an embodiment of the present invention.

Fig. 2 is a schematic view of the internal structure of fig. 1.

Fig. 3 is a schematic view of the structure of fig. 1 from another angle.

Fig. 4 is an enlarged view at a in fig. 3.

Fig. 5 is a schematic view of the structure of the top plate of fig. 1.

Fig. 6 is a schematic structural diagram of a side plate according to an embodiment of the present invention.

Fig. 7 is a schematic structural diagram of a side plate according to another embodiment of the present invention.

Fig. 8 is an exploded view of the rotating shaft and the fixing base in fig. 1.

Fig. 9 is a schematic view of the structure of the round mandrel of fig. 2.

Fig. 10 is a schematic view of the structure of the jig of fig. 1.

100. Bending tooling of the capillary tube of the air-conditioning heat exchanger;

10. a support frame; 11. a partition plate; 12. a track; 13. an activity space; 131. a first side wall; 132. a second side wall; 133. a housing hole;

20. a clamp; 21. a base plate; 211. a sliding part; 212. a chute; 22. a material clamping component; 221. a first clamping member; 222. a second clamping member; 223. an accommodating cavity;

30. a top plate; 31. a trough body; 32. mounting grooves; 33. a first engaging portion;

40. a side plate; 41. a first through hole; 42. a second through hole; 43. a second engaging portion;

50. a first bending assembly; 51. bending the core rod;

60. a second bending assembly; 61. a circular core rod; 611. a limiting part;

70. a rotating shaft; 71. rotating the handle; 72. a keyway; 73. a fixing pin; 74. a first fixing hole;

80. a fixed seat; 81. and a second fixing hole.

Detailed Description

In order to explain technical contents and structural features of the present invention in detail, the following description is made with reference to the embodiments and the accompanying drawings.

Referring to fig. 1 to 3, the present invention provides a bending tool 100 for a capillary tube of an air conditioner heat exchanger, which is suitable for bending the capillary tube of the air conditioner heat exchanger. The bending tool 100 for the air conditioner heat exchanger capillary tube comprises a support frame 10, and a clamp 20, a first bending assembly 50 and a second bending assembly 60 which are arranged on the support frame 10. Wherein, detachable is provided with roof 30 and curb plate 40 on the support frame 10, because the capillary length and the internal diameter that the air conditioner of different models corresponds are different, consequently, can correspond different capillaries according to actual demand and change roof 30 and curb plate 40. Specifically, the clamp 20 is slidably disposed on the support frame 10, the clamp 20 is used for clamping the capillary, and the clamp 20 can slide on the support frame 10 to adjust to different positions corresponding to different capillaries to bend the corresponding capillaries. The first bending element 50 is disposed on the top plate 30, and the second bending element 60 is movably disposed in the supporting frame 10. A rotating shaft 70 is disposed in the supporting frame 10 and is linked with the supporting frame 10, and the rotating shaft 70 rotates to drive the supporting frame 10 to rotate so that the second bending assembly 60 protrudes out of the supporting frame 10.

Referring to fig. 2 and 5, in some alternative embodiments, a rail 12 for a clamp 20 to slide is provided at one end of the supporting frame 10, and the clamp 20 slides along the rail 12 to bend capillary tubes of various lengths. Depending on the length of the capillary tube to be bent, the clamp 20 can be slid along the rail 12 to a suitable position, and then a suitable top plate 30 can be mounted on the support frame 10. The top plate 30 is provided with a first engaging portion 33 engaging with the support frame 10, and the top plate 30 is detachably attached to the support frame 10 by the first engaging portion 33. The top plate 30 is provided with a groove 31 capable of avoiding the clamp 20. It will be appreciated that the first bending assembly 50 is mounted on the top plate 30, and that the first bending assembly 50 includes a plurality of bending mandrels 51, each of the plurality of bending mandrels 51 being removably mounted on the top plate 30. The top plate 30 is provided with a plurality of mounting grooves 32 to which the bending mandrels 51 can be mounted, and the plurality of bending mandrels 51 are mounted on the corresponding top plate 30 at appropriate intervals and positions as required so as to be able to bend the corresponding capillaries.

Referring to fig. 1, 2 and 10, in some alternative embodiments, the clamp 20 includes a base plate 21 slidable along the rail 12 and a material clamping assembly 22 slidably disposed on the base plate 21. The bottom of the bottom plate 21 is provided with a sliding part 211, and the bottom plate 21 can slide on the rail 12 of the support frame 10 through the sliding part 211. The bottom plate 21 is further provided with a sliding chute 212 for the clamping assembly 22 to slide, and the extending direction of the sliding chute 212 is perpendicular to the extending direction of the rail 12, or the extending direction of the sliding chute 212 is substantially perpendicular to the extending direction of the rail 12. It can be understood that the clamp 20 can slide along the rail 12 in the length direction of the support frame 10, and the clamping assembly 22 can slide along the sliding groove 212 in the width direction of the support frame 10, so that the better bending clamping position can be adjusted according to different capillary tubes. Specifically, the clamping assembly 22 includes a first clamping member 221 and a second clamping member 222, and both the first clamping member 221 and the second clamping member 222 can slide on the bottom plate 21 and can slide on the bottom plate 21 respectively, so as to adjust the size of the accommodating cavity 223 according to actual needs. The first clamping piece 221 and the second clamping piece 222 cooperate to be able to form a receiving chamber 223 for receiving a capillary. By operating the second clamping member 222 to make the second clamping member 222 far away from the first clamping member 221 in the first direction so as to place the capillary in the accommodating cavity 223, the operation of the second clamping member 222 is stopped so that the second clamping member 222 is close to the first clamping member 221 so as to lock the capillary in the accommodating cavity 223. The capillary tube assembly is formed by a plurality of capillary tubes, the capillary tube assembly is clamped and locked in the clamping assembly 22, then the capillary tube assembly is bent one by one, and finally the capillary tubes are fixed respectively so as to prevent the capillary tubes from being damaged by each other.

Referring to fig. 2 to 4 and 9, in some alternative embodiments, the second bending elements 60 are disposed on both sides of the supporting frame 10. The second bending assembly 60 includes a plurality of circular mandrels 61, and a plurality of circular mandrels 61 are arranged in both sides of the support frame 10 according to certain interval and movably in the support frame 10, and when the support frame 10 rotates, the plurality of circular mandrels 61 can be driven to move, and the plurality of circular mandrels 61 on one side of the support frame 10 can be exposed out of the support frame 10, so as to bend the capillary wires. Specifically, a movable space 13 for the circular mandrel 61 to move is arranged on a side of the support frame 10, the movable space 13 includes a first side wall 131 and a second side wall 132, the first side wall 131 and the second side wall 132 are both provided with accommodating holes 133 for the circular mandrel 61 to pass through, and the circular mandrel 61 is located in the accommodating holes 133 of the first side wall 131 and the second side wall 132 and moves between the first side wall 131 and the second side wall 132 along the accommodating holes 133. The middle of the circular core rod 61 is provided with a protruding limiting part 611, and the circular core rod 61 is always movable between the first side wall 131 and the second side wall 132 by the limiting part 611. It can be understood that when the limiting part 611 of the circular core rod 61 contacts the first side wall 131, the side circular core rod 61 is maximally exposed out of the supporting frame 10; when the circular mandrel 61 contacts the second sidewall 132, the circular mandrel 61 of that side is located almost entirely within the support bracket 10.

Referring to fig. 1 to 3 and fig. 6 and 7, in some alternative embodiments, the side plate 40 is detachably connected to the supporting frame 10 through a second engaging portion 43. The side plate 40 is provided with a first through hole 41 through which the circular core rod 61 can pass, the first through hole 41 can be set according to the actual requirement, and the first through hole 41 is used for the circular core rod 61 of the second bending assembly 60 to pass. Illustratively, the rotating shaft 70 rotates to move the circular core rod 61 between the first sidewall 131 and the second sidewall 132 and pass through the first through hole 41 on the sidewall, and the circular core rod 61 is exposed out of the side plate 40 for winding the capillary. The side plate 40 is further provided with a second through hole 42 for positioning a capillary, and the capillary passes through the first bending assembly 50 and the second bending assembly 60 in sequence and is positioned in the second through hole 42 so as to be fixed. It can be understood that one end of the capillary tube is fixed in the fixture 20, the other end of the capillary tube is bent around the first bending component 50 and the second bending component 60, and finally, the other end of the capillary tube is fixed in the second through hole 42 of the side plate 40, after the plurality of capillary tubes are sequentially bent, the bent capillary tubes are fixed through fixing parts such as a binding belt, so that relative movement does not exist between the capillary tubes, damage is avoided, and finally, the bent and fixed capillary tubes are taken down and welded on a heat exchanger of an air conditioner.

Referring to fig. 2 and 8, in some alternative embodiments, a plurality of partition plates 11 are disposed in the supporting frame 10, the rotating shaft 70 sequentially passes through the plurality of partition plates 11, a key slot 72 that is engaged with the partition plate 11 is disposed on the rotating shaft 70, and a protrusion that is engaged with the key slot 72 may be disposed on the partition plate 11, so that the rotating shaft 70 can better drive the partition plate 11 to rotate. The rotating shaft 70 rotates to drive the plurality of partition plates 11 and the supporting frame 10 to rotate. It can be understood that the partition plates 11 are fixedly connected with the support frame 10 in the support frame 10, and the rotating shaft 70 passes through the plurality of partition plates 11, so that when the rotating shaft 70 rotates, the whole support frame 10 can be better driven to rotate through the partition plates 11. Wherein, the frock of bending 100 of air conditioner heat exchanger capillary still includes fixing base 80, and the both ends of support frame 10 all are provided with fixing base 80, and rotation axis 70 passes support frame 10 and both ends are located two fixing base 80 to make support frame 10 unsettled rotate with the rotation along with rotation axis 70 between two fixing base 80. Specifically, one end of the rotating shaft 70 is provided with a rotating handle 71, and the rotating shaft 70 rotates around the two fixing seats 80 with the supporting frame 10 by operating the rotating handle 71. The rotating shaft 70 is further provided with at least one first fixing hole 74, the fixing seats 80 are further provided with second fixing holes 81, and after the rotating shaft 70 rotates, the rotating shaft 70 can be fixed on the two fixing seats 80 and cannot rotate through the matching of the fixing pins 73 with the first fixing holes 74 and the second fixing holes 81. When the rotating shaft 70 does not need to rotate, the rotating shaft 70 can be fixed on the two fixed seats 80 by the cooperation of the fixed pins 73 with the first fixed holes 74 and the second fixed holes 81.

The invention also provides a bending method for bending and fixing the capillary tube by using the bending tool 100 for the capillary tube of the air-conditioning heat exchanger, which comprises the following steps:

the position of the clamp 20 is adjusted on the support frame 10 by the capillary tube to be bent, so that the clamp 20 can clamp and fix the capillary tube at a proper position, and the clamp 20 can be matched with the corresponding top plate 30.

The capillary tube to be bent is selected to be suitable for the top plate 30 and the side plate 40, and the top plate 30 and the side plate 40 are mounted on the support frame 10.

Mounting the first bending assembly 50 on the top panel 30; the first bending unit 50 includes a plurality of bending mandrels 51, and the plurality of bending mandrels 51 are attached to the top plate 30 at predetermined intervals according to actual bending requirements.

The support frame 10 is rotated by a predetermined angle by the rotation shaft 70, so that the second bending assembly 60 located in the support frame 10 is movable in the support frame 10 and protrudes out of the support frame 10 or the side plate 40. The preset angle is an angle rotated to enable the second bending assembly 60 to movably protrude out of the support frame 10 or the side plate 40, and the preset angle may be an appropriate angle such as 25 °, 30 °, 40 ° or 45 °. According to the side plate 40 selected by the capillary tube to be actually bent, the circular core rod 61 of the second bending assembly 60 may protrude out of the support frame 10, or may protrude out of the side plate 40 through the first through hole 41 of the side plate 40.

The rotated support frame 10 is fixed by the rotating shaft 70, and after rotating a suitable angle, the support frame 10 is fixed between the two fixing seats 80 by the rotating shaft 70.

The capillary tube assembly is formed by a plurality of capillary tubes, the capillary tube assembly is fixed in the clamp 20, one of the capillary tubes is bent, the capillary tube firstly passes through one or a plurality of bending core rods 51 on the first bending assembly 50, then the capillary tube passes through one or a plurality of round core rods 61 on the second bending assembly 60, and then the end part of the capillary tube is fixed on a corresponding position on the side plate 40 in a positioning manner, namely the end part of the capillary tube is fixed in a corresponding second through hole 42 on the side plate 40 in a positioning manner.

And sequentially bending all the capillary tubes on the capillary tube assembly, respectively positioning and fixing the bent capillary tubes by using the fixing parts, and finally taking down the bent and fixed capillary tube assembly from the bending tool 100 of the capillary tube of the air-conditioning heat exchanger and welding the bent and fixed capillary tube assembly on the heat exchanger.

As shown in fig. 1 to 10, a bending tool 100 for a capillary tube of an air conditioner heat exchanger according to the present invention is used for bending a capillary tube in an air conditioner. The air conditioner heat exchanger capillary tube bending tool 100 comprises a support frame 10, a rotating shaft 70, a clamp 20, a first bending assembly 50 and a second bending assembly 60, wherein the rotating shaft 70, the clamp 20, the first bending assembly 50 and the second bending assembly 60 are arranged on the support frame 10, a plurality of partition plates 11 are arranged in the support frame 10, and the rotating shaft 70 sequentially penetrates through the support frame 10 and the plurality of partition plates 11 in the support frame 10 to better drive the support frame 10 to rotate. Two ends of the rotating shaft 70 are respectively placed on the fixing seats 80, so that the supporting frame 10 is suspended between the two fixing seats 80, and the rotating shaft 70 rotates and drives the supporting frame 10 to rotate around the fixing seats 80. The clamp 20 is used to clamp and secure the capillary tube. Because different types of air conditioners correspond to capillaries with different lengths and inner diameters, the top plate 30 and the side plate 40 on the support frame 10 can be replaced by different top plates 30 and side plates 40 according to the bending of different capillaries. After the top panel 30 is installed, the first bending assembly 50 is installed on the top panel 30. The side plate 40 can be provided with or not provided with a first through hole 41 according to actual needs, the first through hole 41 is used for the second bending component 60 to movably protrude out of the side plate 40, the side plate 40 is further provided with a second through hole 42, and the second through hole 42 is used for positioning a bent capillary tube so as to fix the bent capillary tube, so that relative movement does not exist between the capillary tubes, the copper tube is prevented from being damaged by collision, and the bent and fixed capillary tube is taken down and welded on a heat exchanger of an air conditioner. The bending tool 100 for the capillary tube of the air-conditioning heat exchanger is simple in structure, suitable for bending various air-conditioning capillary tubes, good in uniformity of the bent capillary tube, multipurpose, simple and convenient to operate and capable of greatly improving production efficiency. The bending method is convenient to operate and can be suitable for bending various capillaries.

The above disclosure is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the invention, so that the appended claims are intended to cover all such modifications and changes as fall within the true spirit of the invention.