A stretching and straightening device for testing air-conditioning copper tubes

Abstract

The invention relates to the technical field of copper tube straightening, and discloses a stretching and straightening device for detecting copper tubes of air conditioners, comprising a device platform, a vertical straightening device and a horizontal straightening device installed on the device platform, a device bin installed on the device platform, four detection rollers arranged in a circle on the moving track of the copper tube, a device component rotatably installed on each detection roller, an elastic component fixedly installed on each device component, a pressure sensing plate fixedly installed on one end of each elastic component, the stretching and straightening device detects the bending degree of the copper tube by using the detection roller, pushes a speed regulating knob to move different distances to slow down the output speed of the motor to different degrees, and then limits the speed regulating knob by a limit block, so that the device uses an appropriate speed to straighten the copper tube, when the bending part of the copper tube moves a certain distance and the straightening is completed, the limit block will release the limit on the speed regulating knob under the electromagnetic effect, the speed regulating knob is reset to restore the motor speed to normal, and the straightening effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of copper tube straightening, in particular to a stretching and straightening device for detecting copper tubes of air conditioners. Background Art

[0002] The copper tube straightener is a tool specially used to repair and straighten the bent, deformed or uneven copper tubes in the air conditioning system. When using it, the copper tube to be straightened is placed on the bracket, and the roller is closely fitted to the copper tube by adjusting the mechanism. Then, the roller is rolled along the length direction of the copper tube manually or automatically to gradually straighten the bent or deformed part. The device can quickly and effectively straighten the copper tube, saving maintenance time and cost. Through precise adjustment of the mechanism and control, a high-precision straightening effect can be achieved to ensure that the copper tube can operate normally in the system. It can be applied to copper tubes of different diameters and lengths to meet the needs of various air conditioning systems.

[0003] Since copper is considered to be relatively soft and deformable under normal conditions, air-conditioning copper tubes are prone to bending and deformation during production or use, which affects the flow of coolant in the tube, resulting in a decrease in the cooling effect of the air conditioner. When straightening the air-conditioning copper tube, since the metal material will have a certain stress when deformed, the existing straightening device is usually manual or mechanical at a fixed speed for straightening, and it is impossible to flexibly adjust the straightening speed according to the degree of bending of the copper tube. Copper tubes with larger curvatures may face greater stress and deformation risks during the straightening process. Slowing down the straightening speed helps to apply force more evenly, reduce stress concentration, and reduce the risk of copper tube rupture or deformation. The copper tubes straightened by the existing device may affect the straightening effect because they cannot dissipate stress or reduce stress concentration. For this reason, we propose a tensile straightening device for air-conditioning copper tube inspection. Summary of the invention

[0004] The purpose of the present invention is to provide a stretching and straightening device for detecting copper tubes of air conditioners, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a stretching and straightening device for testing copper tubes of air conditioners, comprising a device platform, a vertical straightening device and a horizontal straightening device fixedly mounted on the device platform, a device warehouse fixedly mounted on the device platform, four testing rollers arranged in a circle on the copper tube motion track, a device part rotatably mounted on each of the testing rollers, an elastic part fixedly mounted on each of the device parts, a pressure sensing plate fixedly mounted on one end of each of the elastic parts, two conveying mechanisms for conveying copper tubes are arranged in the device warehouse, the lower conveying mechanism is fixedly mounted on the inner wall of the device warehouse, the upper conveying mechanism is fixedly mounted on the wedge rod, and a motor for driving the two conveying mechanisms is fixedly mounted on the device warehouse;

[0006] A detection part is fixedly installed on each of the pressure sensing plates, a speed regulating knob for adjusting the output speed of the motor is slidably installed in each of the detection parts, a first spring is fixedly connected between each of the speed regulating knobs and the inner wall at the bottom of the corresponding detection part, a baffle is fixedly installed on each of the device parts, a plurality of electromagnetic slots are arranged in each of the detection parts, a limit block for limiting the speed regulating knob is slidably installed in each of the electromagnetic slots, a second spring is fixedly connected to the bottom of each of the limit blocks and the corresponding electromagnetic slot, and magnetic plates are fixedly installed on the inner walls on both sides of each of the electromagnetic slots.

[0007] Preferably, a rubber rod driven by a motor is rotatably installed in the device bin, and a plurality of sleeves are arranged on the rubber rod, and the sleeves correspond to the speed regulating knob one by one. An annular plate is rotatably installed at one end of each of the sleeves, and a torsion spring is fixedly connected therebetween. Each of the annular plates is fixedly installed on the inner wall of the device bin, and a plurality of slide rails are also fixedly installed on the inner wall of the device bin, and the slide rails correspond to the sleeves one by one. A first cylinder controlled by the speed regulating knob is slidably installed in each of the slide rails, and a third spring is fixedly connected between each of the first cylinder and the inner wall of the device bin. A spiral groove for limiting the end of the first cylinder is arranged on each of the sleeves, and a guide groove is connected at the end of each of the spiral grooves. An electrode sheet for controlling the electrification of the limit block is fixedly installed on one side of each of the first cylinders and at the end of each slide rail, and a plurality of limit plates cooperating with each other are arranged in each of the sleeves, and each of the limit plates is fixedly connected to the inner wall of the sleeve through an elastic strip.

[0008] Preferably, both ends of each of the limiting plates are respectively provided with elastic clamping strips and clamping grooves, and a connecting rod mechanism is provided between two adjacent limiting plates to enable them to move relative to each other.

[0009] Preferably, a screw is threadedly installed at the upper end of the device bin, and a wedge rod is rotatably installed at the lower end of the screw, the wedge rod is fixedly connected to the pressure sensing plate above, and elastic rods are fixedly installed on the inner walls of both sides of the device bin, and a wedge block matching the wedge rod is fixedly installed on one end of each of the elastic rods, and the two wedge blocks are slidingly connected to the pressure sensing plates on the left and right sides respectively, and device plates for limiting the wedge rods are arranged on both sides of each of the wedge blocks, and each of the device plates is fixedly installed on the inner wall of the device bin, and a number of elastic blocks are fixedly installed on the pressure sensing plates on the left and right sides, and each of the device plates is provided with a card slot for limiting the elastic block, and the elastic blocks correspond to the card slots one by one.

[0010] Preferably, both of the two transmission mechanisms are provided with a first gear, which mesh with each other and make the movement directions of the two transmission mechanisms opposite, and one of the first gears is fixedly connected to the output end of the motor.

[0011] Preferably, a flame spray device controlled by a pressure sensing plate is provided in the device bin, and the flame spray device is fixedly mounted on the inner wall of the top of the device bin through a second cylinder.

[0012] Preferably, a second gear meshing with one of the first gears is rotatably installed in the device bin, a plurality of first telescopic rods are fixedly installed on the central axis of the second gear, a limit bar is fixedly installed on the end of each of the first telescopic rods, a height adjustment button for adjusting the height of the second cylinder is slidably installed on the inner wall of the device bin, a limit piece for limiting the limit bar is fixedly installed on the height adjustment button, and a second telescopic rod is fixedly connected between the height adjustment button and the inner wall of the bottom of the device bin.

[0013] Preferably, both the left and right devices are fixedly mounted with straightening plates, the two straightening plates are located between the two conveying mechanisms, and the ends thereof are both arranged in an arc shape.

[0014] Preferably, a plurality of sliding balls are provided on both sides of both ends of the wedge-shaped rod, and a sliding groove for limiting the sliding balls is provided on each of the device plates.

[0015] Preferably, each of the first cylinder ends is provided with a ball for reducing friction.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention utilizes a detection roller to detect the bending degree of the copper tube, and pushes a speed regulating knob to move different distances according to the bending degree, so that the output speed of the motor is slowed down to different degrees, and then the speed regulating knob is limited by a limit block, so that the device uses an appropriate speed to straighten the bending part of the copper tube. When the bending part of the copper tube moves a certain distance and the straightening is completed, the limit block will be electromagnetically acted to release the limit on the speed regulating knob, and the speed regulating knob will be reset to restore the motor speed to normal, thereby ensuring the overall straightening speed of the device and improving the straightening effect.

[0018] The present invention utilizes a detection roller and a pressure sensing plate to detect the length of a copper tube bend, and controls a flame spray device to perform flame spray heating on the copper tube bend, so as to reduce stress generated when the copper tube is straightened; when the motor speed slows down, the rotation speed of the second gear will decrease, and the centrifugal force generated will also decrease; the first telescopic rod will drive the limit bar to retract, and the second telescopic rod will push the height adjustment button upward, so that the second cylinder drives the flame spray device to move upward to reduce heating of the copper tube, and prevent the copper tube from being damaged due to excessive heating when the straightening speed is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the detection roller of the present invention;

[0021] Figure 3 It is a schematic diagram of the structure of the wedge rod and the wedge block of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of the device board of the present invention;

[0023] Figure 5 This is a schematic diagram of the internal structure of the detection component of the present invention;

[0024] Figure 6 It is a schematic diagram of the structure of the transmission mechanism of the present invention;

[0025] Figure 7 This is a schematic diagram of the structure of the straightening plate of the present invention;

[0026] Figure 8 It is a schematic diagram of the sleeve structure of the present invention;

[0027] Fig. 9 It is a schematic diagram of the structure of the torsion spring of the present invention;

[0028] Fig.10 This is a schematic diagram of the structure of the first cylinder of the present invention;

[0029] Fig.11 It is a schematic diagram of the connecting rod mechanism structure of the present invention;

[0030] Fig.12 It is a schematic diagram of the structure of the flame spraying device of the present invention;

[0031] Fig.13 It is a schematic diagram of the height adjustment button structure of the present invention.

[0032] In the figure: 1-device table; 2-device bin; 3-vertical straightening device; 4-horizontal straightening device; 5-detection roller; 6-device member; 7-elastic member; 8-pressure sensing plate; 9-elastic block; 10-screw; 11-wedge rod; 12-wedge block; 13-elastic rod; 14-device plate; 15-slide ball; 16-slide groove; 17-card groove; 18-detection member; 19-speed knob; 20-stop rod; 21-first spring; 22-limiting block; 23-electromagnetic slot; 24-second spring; 25-magnetic plate; 26-transmission mechanism; 27-first gear; 28-motor; 29-straightening plate; 30-rubber rod; 31-sleeve; 32-spiral groove; 33-guide groove; 34-annular plate; 35-torsion spring; 36-limiting plate; 37-elastic strip; 38-third spring; 39-first cylinder; 40-ball; 41-electrode sheet; 42-slide rail; 43-clamping strip; 44-clamping groove; 45-connecting rod mechanism; 46-second cylinder; 47-flame device; 48-second gear; 49-first telescopic rod; 50-limiting strip; 51-limiting member; 52-height adjustment button; 53-second telescopic rod. DETAILED DESCRIPTION

[0033] 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.

[0034] See also Figure 1-13The present invention provides a technical solution: a stretching and straightening device for testing copper tubes of air conditioners, comprising a device platform 1, a vertical straightening device 3 and a horizontal straightening device 4 fixedly mounted on the device platform 1 (the vertical straightening device 3 and the horizontal straightening device 4 are both existing known structures, so the present invention will not be described in detail), a device bin 2 is fixedly mounted on the device platform 1, four testing rollers 5 are arranged in the device bin 2, and the testing rollers 5 are arranged in a circle on the movement trajectory of the copper tube, and a device part 6 is rotatably mounted on each testing roller 5, and an elastic part 7 is fixedly mounted on each device part 6, and a pressure sensing plate 8 is fixedly mounted on one end of each elastic part 7. After the copper tube enters the device from the entrance of the device bin 2, it will move forward. When the copper tube is bent, its bending The corresponding detection roller 5 will be pushed, and the corresponding elastic member 7 will be compressed, and the pressure sensed by the corresponding pressure sensing plate 8 will change. A screw rod 10 is threadedly installed on the upper end of the device bin 2, and a wedge rod 11 is rotatably installed on the lower end of the screw rod 10. The wedge rod 11 is fixedly connected to the upper pressure sensing plate 8, and the lower pressure sensing plate 8 is fixedly installed on the bottom inner wall of the device bin 2. Elastic rods 13 are fixedly installed on the inner walls of both sides of the device bin 2, and a wedge block 12 matching the wedge rod 11 is fixedly installed at one end of each elastic rod 13. The two wedge blocks 12 are slidably connected to the left and right pressure sensing plates 8 respectively. Device plates 14 for limiting the wedge rod 11 are arranged on both sides of each wedge block 12, so that the wedge rod 11 can be moved. The device 14 is fixedly mounted on the inner wall of the device bin 2, and a plurality of sliding balls 15 are arranged on both sides of both ends of the wedge rod 11. A sliding groove 16 for limiting the sliding ball 15 is arranged on each device plate 14 to reduce the friction between the wedge rod 11 and the device plate 14. A plurality of elastic blocks 9 are fixedly mounted on the pressure sensing plates 8 on the left and right sides, and a card groove 17 for limiting the elastic block 9 is arranged on each device plate 14. The elastic blocks 9 correspond to the card grooves 17 one by one. When the diameter of the detected air-conditioning copper tube changes, it is necessary to adjust the spacing between the detection rollers 5, and rotate the screw 10 to drive the wedge rod 11 and the corresponding device thereon to move up and down synchronously with the detection roller 5, so that the upper and lower detection rollers 5 can move up and down synchronously. The spacing between the rollers 5 is adjusted. Due to the elastic force of the elastic rod 13, the inclined surfaces of the two wedge blocks 12 are always in contact with the inclined surfaces at both ends of the wedge rod 11. When the wedge rod 11 moves up and down, it will also cause the wedge blocks 12 on both sides to move horizontally synchronously. Then, by limiting the elastic block 9 through the slot 17, when the wedge block 12 moves horizontally, the pressure sensing plates 8 on the left and right sides respectively drive the detection rollers 5 thereon to move obliquely along the corresponding slots 17, so that the four detection rollers 5 are adjusted synchronously. Since the resistance of the slot 17 to the elastic block 9 is greater than the elastic force of the elastic member 7, when the detection rollers 5 on the left and right sides detect that the copper tube is bent, the elastic member 7 will be compressed, and the pressure sensing plates 8 on the left and right sides will not slide on the wedge blocks 12.

[0035] Two conveying mechanisms 26 for conveying copper tubes are arranged in the device bin 2 (the conveying mechanisms 26 are known belt conveying mechanisms, so the present invention will not be described in detail). The lower conveying mechanism 26 is fixedly installed on the inner wall of the device bin 2, and the upper conveying mechanism 26 is fixedly installed on the wedge rod 11, so that the spacing between the upper and lower conveying mechanisms 26 is always the same as the spacing between the upper and lower detection rollers 5 and the diameter of the copper tube, so that the copper tube can be clamped and conveyed. A motor 28 for driving the two conveying mechanisms 26 is fixedly installed on the device bin 2. The two conveying mechanisms 26 are respectively located on the upper and lower sides of the copper tube movement trajectory, and first gears 27 are arranged on them. The two first gears 27 mesh with each other and make the movement directions of the two conveying mechanisms 26 opposite. One of the first gears 27 is connected to the motor 28. The output end of the machine 28 is fixedly connected. When the motor 28 is working, it drives one of the first gears 27 to rotate, and drives one of the transmission mechanisms 26 to transmit the copper tube. Through the meshing of the two first gears 27, the other transmission mechanism 26 synchronously transmits the copper tube in the opposite direction, and at the same time, the upper and lower bends of the copper tube can be pre-straightened in advance. With the cooperation of the two transmission mechanisms 26, the copper tube can be stably transmitted. The left and right device parts 6 are fixedly installed with straightening plates 29. The two straightening plates 29 are located between the two transmission mechanisms 26, and their ends are set to an arc shape, so that the bending part of the copper tube can enter between the two straightening plates 29. The spacing between the two straightening plates 29 is the same as the spacing between the left and right detection rollers 5 and the diameter of the copper tube, so the horizontal bending part of the copper tube can be pre-straightened.

[0036] A detection member 18 is fixedly installed on each pressure sensing plate 8, and a speed regulating button 19 for adjusting the output speed of the motor 28 is slidably installed in each detection member 18 (the speed regulating button 19 is an existing known structure, so the present invention will not be described in detail), a first spring 21 is fixedly connected between each speed regulating button 19 and the inner wall at the bottom of the corresponding detection member 18, a blocking rod 20 is fixedly installed on each device member 6, and a plurality of electromagnetic slots 23 are provided in each detection member 18, and a limiting block 22 for limiting the speed regulating button 19 is slidably installed in each electromagnetic slot 23, and each limiting block 22 is fixedly connected to the bottom of the corresponding electromagnetic slot 23 with a second spring 24, and a magnetic plate 25 is fixedly installed on the inner walls on both sides of each electromagnetic slot 23, so that the electromagnetic slot 23 3, when the detection roller 5 detects the bending, it will drive the device part 6 and the upper stopper 20 to move, and push the speed regulating button 19 into the detection part 18, so that the first spring 21 is compressed. Since one side of the limit block 22 is an inclined surface and the other side is a straight surface, when the speed regulating button 19 moves into the detection part 18, it contacts the inclined surface of the limit block 22, and the limit block 22 will squeeze the second spring 24 and move into the electromagnetic slot 23. When the speed regulating button 19 passes through the limit block 22, the elastic force of the second spring 24 resets it. After the bending part of the copper tube passes through the detection roller 5, the detection roller 5 is driven by the elastic force of the elastic member 7 to reset the stopper 20, and the limit of the speed regulating button 19 is released. The speed regulating button 19 is reset by the elastic force of the first spring 21, and since the speed regulating button 19 is in contact with the limit during the resetting process, The block 22 is in direct contact, and the limit block 22 will prevent the speed regulating button 19 from resetting. The speed of the motor 28 will be adjusted according to the bending degree detected by the detection roller 5, so that the copper tube bending part is straightened at an appropriate speed. When multiple speed regulating buttons 19 move, the motor 28 outputs at the speed corresponding to the speed regulating button 19 of the movement amplitude. A rubber rod 30 driven by the motor 28 is rotatably installed in the device bin 2. The motor 28 drives the rubber rod 30 to perform differential movement through a belt and a pulley. A plurality of sleeves 31 are provided on the rubber rod 30. The sleeves 31 correspond to the speed regulating buttons 19 one by one. An annular plate 34 is rotatably installed at one end of each sleeve 31, and a torsion spring 35 is fixedly connected between them. Each annular plate 34 is fixedly installed in the device bin 2 The device bin 2 has a plurality of slide rails 42 fixedly mounted on the inner wall thereof, the slide rails 42 corresponding to the sleeves 31 one by one, a first cylinder 39 controlled by the speed regulating knob 19 slidably mounted in each slide rail 42, a third spring 38 fixedly connected between each first cylinder 39 and the inner wall of the device bin 2, a spiral groove 32 for limiting the end of the first cylinder 39 is arranged on each sleeve 31, a guide groove 33 is connected to the end of each spiral groove 32, an electrode sheet 41 for controlling the electrification of the limit block 22 is fixedly mounted on one side of each first cylinder 39 and the end of each slide rail 42, a plurality of mutually cooperating limit plates 36 are arranged in each sleeve 31, and each limit plate 36 is fixedly connected to the inner wall of the sleeve 31 through an elastic strip 37,Each of the two ends of the limit plate 36 is provided with an elastic clamping strip 43 and a clamping groove 44, respectively. A connecting rod mechanism 45 is provided between two adjacent limit plates 36 to enable them to move relative to each other (the connecting rod mechanism 45 is a known structure, so the present invention will not be described in detail). When the speed regulating knob 19 moves, the corresponding first cylinder 39 will work, so that its end is inserted into the head end of the spiral groove 32 on the sleeve 31, and continues to move, so that one of the limit plates 36 is pushed toward the rubber rod 30, and through the cooperation of the connecting rod mechanism 45 between the limit plates 36, all the limit plates 36 are synchronously moved toward the rubber rod 30 moves, and the elastic strip 37 is stretched, and at the same time, the clamping strips 43 are inserted into the corresponding clamping grooves 44, which strengthens the connection between the adjacent limit plates 36. When the first cylinder 39 moves to the right position, the corresponding limit plates 36 are all attached to the rubber rod 30, and the friction between them causes the rubber rod 30 to drive the limit plates 36 and the sleeve 31 to rotate. Each end of the first cylinder 39 is provided with a ball 40 for reducing friction, so that the friction between the end of the first cylinder 39 and the limit plate 36 is reduced. When the sleeve 31 rotates, the torsion spring 35 will rotate and store force, and the end of the first cylinder 39 is pressed by the spiral groove 32. The first cylinder 39 is limited, so that the first cylinder 39 moves laterally along the slide rail 42, and the third spring 38 is stretched. When the end of the first cylinder 39 moves to the end of the spiral groove 32, the limit of the limit plate 36 will be released, and the limit plate 36 will be reset under the elastic force of the elastic strip 37. The sleeve 31 and the limit plate 36 will no longer rotate with the rubber rod 30. The sleeve 31 and the limit plate 36 will be reset by the elastic force of the torsion spring 35. The end of the first cylinder 39 will enter the guide groove 33. At the same time, the first cylinder 39 will also move to the end of the slide rail 42. The electrode sheet 41 on the first cylinder 39 will be in contact with the When the electrode sheet 41 at the end of the slide rail 42 contacts, the limit block 22 corresponding to the corresponding speed knob 19 will be energized and move inward along the electromagnetic slot 23, releasing the limit on the speed knob 19. The speed knob 19 is reset under the elastic force of the first spring 21. At this time, the copper tube bend corresponding to the speed knob 19 has been straightened by the vertical straightening device 3 and the horizontal straightening device 4. If no other speed knob 19 moves at this time, the motor 28 resumes normal output speed. If there are other speed knobs 19 that have not been reset at this time, the motor 28 still outputs at the speed corresponding to the speed knob 19 with the largest movement.

[0037] A flame spray device 47 controlled by the pressure sensing plate 8 is arranged in the device bin 2, and the flame spray device 47 is fixedly mounted on the inner wall at the top of the device bin 2 through a second cylinder 46, and a second gear 48 meshing with one of the first gears 27 is rotatably mounted in the device bin 2, and a plurality of first telescopic rods 49 are fixedly mounted on the central axis of the second gear 48, and a limit strip 50 is fixedly mounted on the end of each first telescopic rod 49, and a height adjustment button 52 for adjusting the height of the second cylinder 46 is slidably mounted on the inner wall of the device bin 2 (the height adjustment button 52 is an existing known structure, so the present invention will not be described in detail), and a limit piece 51 for limiting the limit strip 50 is fixedly mounted on the height adjustment button 52, and a second telescopic rod 53 is fixedly connected between the height adjustment button 52 and the inner wall at the bottom of the device bin 2. When the pressure sensing plate 8 senses When the pressure changes, it means that there is a bend in the copper tube. After the conveying mechanism 26 conveys a certain distance, when the bend of the copper tube is about to reach the bottom of the flame spraying device 47, the flame spraying device 47 will be started to heat the bend of the copper tube below, and the heating time is equal to the pressure change time sensed by the pressure sensing plate 8. When the motor 28 slows down, the speeds of the first gear 27 and the second gear 48 will decrease. The speed of the central axis of the second gear 48 decreases, which reduces the centrifugal force on the limit bar 50. The limit bar 50 retracts under the elastic force of the first telescopic rod 49. At the same time, the elastic force of the second telescopic rod 53 pushes the height adjustment button 52 and the limit member 51 upward. The height adjustment button 52 causes the second cylinder 46 to drive the flame spraying device 47 to retract upward, so as to reduce the heating of the copper tube below and prevent the copper tube from being damaged due to continuous excessive heating when the conveying speed of the copper tube slows down.

[0038] Specifically, firstly, it is necessary to adjust the spacing between the detection rollers 5 according to the diameter of the copper tube of the air conditioner, rotate the screw 10, drive the wedge rod 11 and the corresponding device thereon to move up and down synchronously with the detection roller 5, so that the spacing between the upper and lower detection rollers 5 is adjusted. During the up and down movement of the wedge rod 11, the wedge blocks 12 on both sides will also move horizontally synchronously. Then, the elastic block 9 is limited by the card slot 17, so that when the wedge block 12 moves horizontally, the pressure sensing plates 8 on the left and right sides respectively drive the detection rollers 5 thereon to move obliquely along the corresponding card slot 17, so that the four detection rollers 5 are adjusted synchronously. After the spacing between the detection rollers 5 is adjusted, the copper tube is placed into the device from the entrance of the device bin 2, and at the same time, when the motor 28 is working, it drives one of the first gears 27 rotates, and drives one of the transmission mechanisms 26 to transmit the copper tube. Through the meshing of the two first gears 27, the other transmission mechanism 26 synchronously transmits the copper tube in the opposite direction. When the detection roller 5 detects the bending, it will drive the device part 6 and the upper stopper 20 thereof to move, and push the speed regulating button 19 into the detection part 18, so that the first spring 21 is compressed. When the speed regulating button 19 moves into the detection part 18, it contacts the inclined surface of the limit block 22. The limit block 22 squeezes the second spring 24 and moves into the electromagnetic slot 23. When the speed regulating button 19 passes through the limit block 22, the elastic force of the second spring 24 resets it. After the bending part of the copper tube passes through the detection roller 5, the detection roller 5 is driven by the elastic force of the elastic member 7 to reset the stopper 20, and the limit on the speed regulating button 19 is released. The speed regulating button 19 is reset by the elastic force of the first spring 21 and directly contacts the limit block 22. The limit block 22 will prevent the speed regulating button 19 from resetting. The speed of the motor 28 will be adjusted according to the bending degree detected by the detection roller 5. When the speed regulating button 19 moves, the corresponding first cylinder 39 will work to insert its end into the head end of the spiral groove 32 on the sleeve 31 and continue to move, pushing one of the limit plates 36 against the rubber rod 30. Through the cooperation of the connecting rod mechanism 45 between the limit plates 36, all the limit plates 36 are synchronously moved toward the rubber rod 30, and the elastic strip 37 is stretched. When the first cylinder 39 moves into place, the corresponding limit plates 36 are all attached to the rubber rod 30, and the friction between them causes the rubber rod 30 to drive the limit plates 36 and the sleeve 31 When the sleeve 31 rotates, the torsion spring 35 will rotate and store force, and the spiral groove 32 will limit the end of the first cylinder 39, so that the first cylinder 39 will move laterally along the slide rail 42, and the third spring 38 will be stretched. When the end of the first cylinder 39 moves to the end of the spiral groove 32, the limit on the limit plate 36 will be released, and the limit plate 36 will be reset under the elastic force of the elastic strip 37. The sleeve 31 and the limit plate 36 will no longer rotate with the rubber rod 30, and the sleeve 31 and the limit plate 36 will be reset by the elastic force of the torsion spring 35. The end of the first cylinder 39 will enter the guide groove 33. At the same time, the first cylinder 39 will also move to the end of the slide rail 42, and the electrode sheet 41 on the first cylinder 39 will contact the electrode sheet 41 at the end of the corresponding slide rail 42.The limit block 22 corresponding to the speed regulating button 19 will be energized and move inward along the electromagnetic slot 23 to release the limit on the speed regulating button 19. The speed regulating button 19 will be reset under the elastic force of the first spring 21. When the pressure felt by the pressure sensing plate 8 changes, after the transmission mechanism 26 transmits a certain distance, the flame spray device 47 will start to heat the bending part of the copper tube below. After the motor 28 slows down, the speed of the central axis of the second gear 48 decreases to reduce the centrifugal force on the limit bar 50. The limit bar 50 retracts under the elastic force of the first telescopic rod 49. At the same time, the elastic force of the second telescopic rod 53 will push the height adjustment button 52 and the limit piece 51 upward. The height adjustment button 52 causes the second cylinder 46 to drive the flame spray device 47 to retract upward to reduce the heating of the copper tube below and prevent the copper tube from being damaged due to continuous excessive heating when the transmission speed of the copper tube slows down.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tensile straightening device for testing an air-conditioning copper tube, comprising a device platform (1), a vertical straightening device (3) and a horizontal straightening device (4) fixedly mounted on the device platform (1), characterized in that: A device bin (2) is fixedly mounted on the device table (1), and four detection rollers (5) are arranged in the device bin (2), and the detection rollers (5) are arranged in a circle on the movement track of the copper tube. A device component (6) is rotatably mounted on each of the detection rollers (5), and an elastic component (7) is fixedly mounted on each of the device components (6). A pressure sensing plate (8) is fixedly mounted on one end of each of the elastic components (7). Two conveying mechanisms (26) for conveying the copper tube are arranged in the device bin (2), and the lower conveying mechanism (26) is fixedly mounted on the inner wall of the device bin (2), and the upper conveying mechanism (26) is fixedly mounted on the wedge rod (11). A motor (28) for driving the two conveying mechanisms (26) is fixedly mounted on the device bin (2); A detection member (18) is fixedly mounted on each of the pressure sensing plates (8), a speed regulating knob (19) for adjusting the output speed of the motor (28) is slidably mounted in each of the detection members (18), a first spring (21) is fixedly connected between each of the speed regulating knobs (19) and the bottom inner wall of the corresponding detection member (18), a blocking rod (20) is fixedly mounted on each of the device members (6), a plurality of electromagnetic slots (23) are provided in each of the detection members (18), a limiting block (22) for limiting the speed regulating knob (19) is slidably mounted in each of the electromagnetic slots (23), each of the limiting blocks (22) is fixedly connected to the bottom of the corresponding electromagnetic slot (23) with a second spring (24), and magnetic plates (25) are fixedly mounted on the inner walls on both sides of each of the electromagnetic slots (23); A rubber rod (30) driven to rotate by a motor (28) is rotatably mounted in the device bin (2), and a plurality of sleeves (31) are arranged on the rubber rod (30), and the sleeves (31) correspond one-to-one with the speed regulating knob (19). An annular plate (34) is rotatably mounted on one end of each sleeve (31), and a torsion spring (35) is fixedly connected therebetween. Each annular plate (34) is fixedly mounted on the inner wall of the device bin (2). A plurality of slide rails (42) are also fixedly mounted on the inner wall of the device bin (2), and the slide rails (42) correspond one-to-one with the sleeves (31). A first cylinder (34) controlled by the speed regulating knob (19) is slidably mounted in each slide rail (42). 9), a third spring (38) is fixedly connected between each of the first cylinders (39) and the inner wall of the device bin (2), each of the sleeves (31) is provided with a spiral groove (32) for limiting the end of the first cylinder (39), the end of each of the spiral grooves (32) is connected to a guide groove (33), one side of each of the first cylinders (39) and the end of each of the slide rails (42) are fixedly mounted with an electrode sheet (41) for controlling the energization of the limit block (22), and each of the sleeves (31) is provided with a plurality of mutually cooperating limit plates (36), and each of the limit plates (36) is fixedly connected to the inner wall of the sleeve (31) via an elastic strip (37).

2. The stretching and straightening device for detecting copper tubes of air conditioners according to claim 1, characterized in that: Each of the limiting plates (36) is provided with elastic clamping strips (43) and clamping grooves (44) at both ends, and a connecting rod mechanism (45) is provided between two adjacent limiting plates (36) to enable them to move relative to each other.

3. The stretching and straightening device for detecting an air-conditioning copper tube according to claim 1, characterized in that: The upper end of the device bin (2) is threadedly mounted with a screw rod (10), and the lower end of the screw rod (10) is rotatably mounted with a wedge rod (11), and the wedge rod (11) is fixedly connected to the upper pressure sensing plate (8). Elastic rods (13) are fixedly mounted on the inner walls of both sides of the device bin (2), and one end of each of the elastic rods (13) is fixedly mounted with a wedge block (12) that matches the wedge rod (11), and the two wedge blocks (12) are respectively connected to the left and right pressure sensing plates. (8) Sliding connection, each of the wedge blocks (12) is provided with a device plate (14) on both sides for limiting the wedge rod (11), each of the device plates (14) is fixedly installed on the inner wall of the device bin (2), and a plurality of elastic blocks (9) are fixedly installed on the pressure sensing plates (8) on the left and right sides, and each of the device plates (14) is provided with a slot (17) for limiting the elastic block (9), and the elastic blocks (9) correspond to the slots (17) one by one.

4. The stretching and straightening device for detecting an air-conditioning copper tube according to claim 1, characterized in that: The two transmission mechanisms (26) are each provided with a first gear (27) which meshes with each other and causes the two transmission mechanisms (26) to move in opposite directions, wherein one of the first gears (27) is fixedly connected to an output end of a motor (28).

5. The stretching and straightening device for detecting copper tubes of air conditioners according to claim 4, characterized in that: A flame spray device (47) controlled by a pressure sensing plate (8) is arranged in the device bin (2); the flame spray device (47) is fixedly mounted on the top inner wall of the device bin (2) via a second cylinder (46).

6. The tensile straightening device for detecting copper tubes of air conditioners according to claim 5, characterized in that: A second gear (48) meshing with one of the first gears (27) is rotatably mounted in the device bin (2); a plurality of first telescopic rods (49) are fixedly mounted on the central axis of the second gear (48); a limit strip (50) is fixedly mounted on the end of each of the first telescopic rods (49); a height adjustment button (52) for adjusting the height of the second cylinder (46) is slidably mounted on the inner wall of the device bin (2); a limit member (51) for limiting the limit strip (50) is fixedly mounted on the height adjustment button (52); and a second telescopic rod (53) is fixedly connected between the height adjustment button (52) and the inner wall at the bottom of the device bin (2).

7. The stretching and straightening device for detecting copper tubes of air conditioners according to claim 4, characterized in that: The two left and right device members (6) are both fixedly mounted with straightening plates (29); the two straightening plates (29) are both located between the two conveying mechanisms (26), and their ends are both arranged in an arc shape.

8. The stretching and straightening device for detecting copper tubes of air conditioners according to claim 3, characterized in that: A plurality of sliding balls (15) are provided on both sides of both ends of the wedge-shaped rod (11), and a sliding groove (16) for limiting the position of the sliding balls (15) is provided on each of the device plates (14).

9. The stretching and straightening device for detecting an air conditioner copper tube according to claim 1, characterized in that: Each end of the first cylinder (39) is provided with a ball (40) for reducing friction.

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