Electronic expansion valve sleeve welding machining rotating device

Abstract

The invention belongs to the technical field of welding machining, and discloses an electronic expansion valve sleeve welding machining rotating device which comprises a rack, a protection mechanism arranged on the upper surface of the rack, a supporting shell arranged on the lower portion of an inner cavity of the protection mechanism and used for containing an electronic expansion valve seat, and a driving motor vertically fixed in the rack. Through the cooperative design of the protection mechanism and the supporting shell, the electronic expansion valve sleeve is protected, the electronic expansion valve sleeve is not prone to being damaged and scrapped, the electronic expansion valve sleeve can be welded again conveniently, economic losses are reduced, the welding effect and the practicability of equipment are improved, the situation that the position of a welding gun is fixed is avoided, and the welding efficiency is improved. The problems that in the welding process of a casing pipe and a valve seat of an electronic expansion valve semi-finished product, when inert gas output suddenly breaks down and air injection is interrupted, the casing pipe and the valve seat of the electronic expansion valve are inconvenient to protect, continuous welding of a welding gun is likely to happen, the casing pipe of the electronic expansion valve is damaged and scrapped, and the welding quality and the practicability of the device are reduced are solved.

Description

Technical Field

[0001] This invention belongs to the field of welding processing technology, specifically a rotary device for welding and processing electronic expansion valve sleeves. Background Technology

[0002] An electronic expansion valve is a throttling element that allows refrigerant flow into a refrigeration unit according to a preset program. The electronic expansion valve mainly consists of an electronic expansion valve sleeve, an electronic expansion valve seat, an electronic expansion valve vertical connector, and an electronic expansion valve horizontal connector. The electronic expansion valve sleeve is primarily connected to the electronic expansion valve seat by welding. During the welding process, a rotating device is typically used to rotate the semi-finished electronic expansion valve while the welding torch remains stationary to weld the connection between the sleeve and the valve seat.

[0003] In the prior art, a Chinese patent discloses a self-rotating device for welding electronic expansion valve sleeves (publication number: CN221755220U), which mainly realizes the self-rotation function of the electronic expansion valve semi-finished product. The welding torch can be fixed and stationary, effectively avoiding a series of problems caused by the tangling of the welding torch cable. The welding of electronic expansion valve sleeves is convenient and quick. Moreover, during the self-rotation process of the electronic expansion valve semi-finished product, there is no loosening or misalignment of the electronic expansion valve sleeve. The assembly accuracy of the electronic expansion valve sleeve and the electronic expansion valve seat is high, and the welding quality is high.

[0004] However, there are still corresponding drawbacks in actual use: the sleeve and seat of the electronic expansion valve are usually welded using TIG welding. During welding, inert gas is sprayed to protect the welding area and prevent tungsten electrode oxidation, molten metal oxidation and porosity by isolating air. When the above-mentioned patented technology is used, the welding torch position is fixed. During the welding process of the sleeve and seat of the electronic expansion valve semi-finished product, when the inert gas output suddenly fails and the jetting is interrupted, it is not convenient to protect the sleeve and seat of the electronic expansion valve. It is easy for the welding torch to continue welding, and the electronic expansion valve sleeve will be damaged and scrapped, which reduces the welding quality and the practicality of the device. Summary of the Invention

[0005] Technical problems to be solved To address the problems mentioned in the background art, the present invention provides a rotary device for welding and processing electronic expansion valve sleeves. This device offers advantages such as convenient operation, protection of the electronic expansion valve sleeves, good welding results, and high practicality. Through the coordinated design of the protective mechanism, support shell, and other structures, the electronic expansion valve sleeves are protected, preventing damage and scrapping. This facilitates the re-welding of the electronic expansion valve sleeves, reduces economic losses, and enhances the practicality of the equipment.

[0006] Technical solution To achieve the above objectives, the present invention provides the following technical solution: a rotating device for welding and processing electronic expansion valve sleeves, comprising a frame, a protective mechanism disposed on the upper surface of the frame, a support shell disposed in the lower part of the inner cavity of the protective mechanism for placing the electronic expansion valve seat, and a drive motor vertically fixed in the frame; The protective mechanism includes a protective shell fixed to the upper surface of the frame by a support rod, a rotating shell movably installed in the bottom opening of the protective shell by a bearing seal, a disengagement mechanism disposed in the lower part of the inner cavity of the rotating shell and the inner cavity of the protective shell for driving the support shell to separate the electronic expansion valve seat and the sleeve from the welding torch, a sealing cover plate hinged to the opening on the top surface of the protective shell, a clamping mechanism disposed at the center of the bottom surface of the sealing cover plate for limiting the expansion valve sleeve, and an alarm mechanism disposed on the disengagement mechanism for alerting the operator. The protective shell has an interface on the right side of its inner cavity that is compatible with the welding torch. The lower part of the inner cavity of the protective shell has a vent hole for the inert gas flow to drive the operation of the disengagement mechanism. The bottom surface of the support shell is slidably connected to the upper surface of the rotating shell, and the top end of the output shaft of the drive motor is fixedly connected to the center of the bottom surface of the rotating shell.

[0007] In the above technical solution, preferably, the release mechanism includes a locking crossbar that moves up and down in the upper part of the inner cavity of the rotating shell, a locking toothed ring that is circumferentially fixed in the lower part of the inner cavity of the protective shell, locking toothed grooves that are symmetrically opened on the bottom surfaces of the left and right ends of the locking crossbar and movably connected to the locking toothed ring, a semi-annular protrusion fixed on the right side of the lower part of the inner cavity of the protective shell above the locking toothed ring, a moving block that slides left and right in the middle of the upper surface of the locking crossbar, two docking rods that are symmetrically fixed on the left and right sides of the moving block and penetrate the two ends of the locking crossbar respectively, and a pneumatic mechanism that is set in the lower part of the inner cavity of the rotating shell and communicates with the vent hole for inert gas flow to drive the locking crossbar to move upward; One end of the docking rod is movably connected to the semi-annular protrusion. Two sets of first compression springs for driving the locking crossbar to move downward are symmetrically arranged on the left and right sides of the top surface of the inner cavity of the rotating shell. A connecting block that is fixedly connected to the center of the bottom surface of the support shell is vertically slidably installed on the top surface of the moving block.

[0008] In the above technical solution, preferably, the upper surface of the locking crossbar is provided with a sliding groove, the front and rear side walls of the moving block are slidably connected to the front and rear sides of the inner cavity of the sliding groove, and the outer surface of the docking rod is fitted with a second compression spring, the two ends of the second compression spring being fixedly connected to the side wall of the moving block and one side of the inner cavity of the sliding groove, respectively.

[0009] In the above technical solution, preferably, two positioning rods are symmetrically fixedly installed on the left and right sides of the movable block, and two positioning grooves are symmetrically opened on the left and right sides of the top surface of the inner cavity of the rotating shell, and the positioning rods are movably connected to the positioning grooves.

[0010] In the above technical solution, preferably, the pneumatic mechanism includes a vent shell fixed in the middle of the bottom surface of the inner cavity of the rotating shell, two connecting pipes symmetrically connected to the left and right sides of the vent shell, an annular shell fixedly sleeved on the lower part of the outer surface of the rotating shell and connected to the inner cavity of the connecting pipe, and a lifting shell that moves up and down in a sealed manner at the top opening of the vent shell. The protective shell has an annular groove circumferentially formed in the lower part of its inner cavity. The annular shell is connected to the inner cavity of the annular groove in a sealed manner through a bearing. The inner cavity of the annular groove is connected to the inner cavity of the vent hole. The top surface of the lifting shell is fixedly connected to the center of the bottom surface of the locking crossbar.

[0011] In the above technical solution, preferably, the pneumatic mechanism further includes an expansion shell connected to the top opening of the ventilation shell, an air inlet circumferentially opened on the outer surface of the lifting shell, a telescopic bellows connected to the bottom surface of the lifting shell, and an exhaust channel circumferentially opened at the bottom of the rotating shell. The upper part of the lifting shell penetrates the top surface of the expansion shell, the bottom end of the telescopic bellows is fixedly connected to the bottom surface of the inner cavity of the vent shell, and the inner cavity of the exhaust channel is connected to the lower part of the inner cavity of the telescopic bellows.

[0012] In the above technical solution, preferably, the clamping mechanism includes a mounting shell that slides up and down at the center of the bottom surface of the sealing cover plate, a screw threadedly installed at the center of the top surface of the sealing cover plate for driving the mounting shell to move up and down, a cone block disposed in the inner cavity of the mounting shell, a connecting shell disposed below the mounting shell and fixedly connected to the middle of the bottom surface of the cone block, a set of balls circumferentially and equidistantly disposed on the top surface of the inner cavity of the mounting shell, a first contact block fixed in the middle of the top surface of the inner cavity of the mounting shell, and a second contact block fixed in the top surface of the inner cavity of the connecting shell and penetrating to the upper surface of the cone block; The bottom surface of the first contact block is movably connected to the upper surface of the second contact block, the upper surface of the cone block is movably connected to the ball bearing, an electrode post is fixedly installed on one side of the upper surface of the sealing cover, the electrode post is connected to the first contact block through a wire, and the inner cavity of the mounting shell is inverted cone shape.

[0013] In the above technical solution, preferably, the alarm mechanism includes a mounting groove formed on the bottom surface of the movable block, two first touch pieces are symmetrically fixedly installed on the left and right sides of the inner cavity of the mounting groove, a sounding alarm is fixedly installed in the middle of the top surface of the inner cavity of the mounting groove, and a second touch piece is fixedly installed in the middle of the bottom surface of the inner cavity of the sliding groove; the first touch pieces and the second touch pieces are movably connected.

[0014] Beneficial effects Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention, through the coordinated design of protective mechanisms and a support shell, allows the welding torch to be inserted into the interface for welding the electronic expansion valve sleeve and valve seat. The outer surface of the welding torch fits snugly against the inner cavity of the interface, effectively sealing it. During welding, the torch sprays inert protective gas to protect the welding area. If the inert protective gas spraying suddenly malfunctions and is interrupted, the pressure of the inert gas entering the protective shell decreases, and the disengagement mechanism automatically activates, causing the support shell to lock in place during rotation. Simultaneously, the support shell, with the assistance of a clamping mechanism, moves the electronic expansion valve sleeve and valve seat away from the welding torch, ensuring that the electronic expansion valve sleeve and valve seat are properly aligned with the welding torch. The welding torch can be separated and automatically disconnect the power supply to the electronic expansion valve sleeve and valve seat, thereby protecting the electronic expansion valve sleeve from damage and scrapping. This facilitates the re-welding of the electronic expansion valve sleeve, reduces economic losses, and improves welding effect and equipment practicality. It solves the problem in the existing technology where the welding torch position is fixed. During the welding of the electronic expansion valve semi-finished sleeve and valve seat, when the inert gas output suddenly fails and the jetting is interrupted, it is not convenient to protect the electronic expansion valve sleeve and valve seat. This can easily lead to continuous welding by the welding torch, damage and scrapping of the electronic expansion valve sleeve, and reduced welding quality and equipment practicality.

[0015] 2. Through the coordinated design of structures such as the moving block and the alarm mechanism, when one end of the docking rod and the semi-annular protrusion press against each other to push the moving block to move, the moving block moves and causes the first contact piece and the second contact piece to fit together. Thus, the first contact piece, the second contact piece, and the sounding alarm form a complete circuit, which promptly issues an alarm to the operator to prompt the equipment to be repaired, thereby improving the efficiency of welding processing and reducing the downtime of equipment failure. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a partial front sectional view of the protective mechanism of the present invention. Figure 3 This is a partial front cross-sectional view of the protective shell, locking toothed ring, and semi-annular protrusion of the present invention. Figure 4This is a partial front cross-sectional view of the detachment mechanism and rotating shell of the present invention; Figure 5 This is a partial top sectional view of the locking crossbar, connecting rod, rotating shell, locking toothed ring, and semi-annular protrusion of the present invention. Figure 6 This is a front cross-sectional view of the clamping mechanism of the present invention; Figure 7 This is a front sectional view of the alarm mechanism of the present invention. Figure 8 This is a partial front sectional view of the structure in the initial state of the present invention; Figure 9 This is a partial front cross-sectional view of the structure of the present invention in the welding state; Figure 10 This is a partial front cross-sectional view of the structure of the present invention in the protected state when it is detached.

[0017] In the diagram: 1. Frame; 2. Protective mechanism; 21. Protective shell; 22. Rotating shell; 23. Sealing cover; 24. Connecting interface; 25. Vent hole; 3. Support shell; 4. Drive motor; 5. Disengagement mechanism; 51. Locking crossbar; 52. Locking toothed ring; 53. Locking toothed groove; 54. Semi-annular protrusion; 55. Moving block; 56. Connecting rod; 57. First compression spring; 58. Second compression spring; 6. Pressing mechanism; 61. 62. Mounting housing; 63. Screw; 64. Conical block; 65. Connecting housing; 66. Ball bearing; 67. First contact block; 68. Second contact block; 79. Alarm mechanism; 70. First contact piece; 71. Sounding alarm; 72. Second contact piece; 80. Pneumatic mechanism; 81. Vent housing; 82. Connecting pipe; 83. Annular housing; 84. Lifting housing; 85. Expansion housing; 86. Air inlet; 87. Telescopic bellows; 88. Exhaust passage. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] like Figures 1 to 10 As shown, the present invention provides a rotating device for welding and processing electronic expansion valve sleeves, including a frame 1, a protective mechanism 2 disposed on the upper surface of the frame 1, a support shell 3 disposed in the lower part of the inner cavity of the protective mechanism 2 for placing the electronic expansion valve seat, and a drive motor 4 vertically fixed in the frame 1. The drive motor 4 is a prior art device with a built-in overload protection mechanism, and its structure and principle will not be described in detail here. The protective mechanism 2 includes a protective shell 21 fixed to the upper surface of the frame 1 by a support rod. The side wall of the protective shell 21 may also be provided with a glass observation window. A rotating shell 22 is movably installed in the bottom opening of the protective shell 21 by a bearing seal. A disengagement mechanism 5 is provided in the lower part of the inner cavity of the rotating shell 22 and the inner cavity of the protective shell 21 to drive the support shell 3 to separate the electronic expansion valve seat and sleeve from the welding torch. A sealing cover plate 23 is hinged to the top opening of the protective shell 21. A clamping mechanism 6 is provided at the center of the bottom surface of the sealing cover plate 23 to limit the expansion valve sleeve. An alarm mechanism 7 is provided on the disengagement mechanism 5 to alert the operator. The protective shell 21 has a mating interface 24 adapted to the welding torch on the right side of its inner cavity. The mating interface 24 can also be used to fit a sealing sleeve on the outer surface of the welding torch. The lower part of the inner cavity of the protective shell 21 has a vent hole 25 for the operation of the inert gas flow-driven release mechanism 5. The bottom surface of the support shell 3 is slidably connected to the upper surface of the rotating shell 22, and the top end of the output shaft of the drive motor 4 is fixedly connected to the center of the bottom surface of the rotating shell 22. The front surface of the outer surface of the protective shell 21 is provided with a spring buckle, and the front surface of the sealing cover plate 23 is provided with a slot adapted to the spring buckle.

[0020] During use, when the welding torch is inserted into the interface 24 to weld the electronic expansion valve sleeve and valve seat, the outer surface of the welding torch fits against the inner cavity of the interface 24, sealing the interface 24. During welding, the welding torch can spray inert protective gas to protect the welding area. When the inert protective gas spraying suddenly fails and is interrupted, the pressure of the inert gas input into the protective shell 21 decreases, and the disengagement mechanism 5 can operate automatically, which can lock the support shell 3 in an emergency during rotation. At the same time, the support shell 3 is driven to move the electronic expansion valve sleeve and valve seat away from the welding torch under the cooperation of the clamping mechanism 6, so that the electronic expansion valve sleeve and valve seat are separated from the welding torch. It can also automatically disconnect the power supply on the electronic expansion valve sleeve and valve seat, thereby protecting the electronic expansion valve sleeve and preventing it from being damaged and scrapped. This facilitates the re-welding of the electronic expansion valve sleeve, reduces economic losses, and improves the welding effect and the practicality of the equipment.

[0021] It should be noted that when the support shell 3 is locked in an emergency during rotation, and the electronic expansion valve sleeve and valve seat are moved away from the welding torch with the cooperation of the clamping mechanism 6, the alarm mechanism 7 can be activated to promptly issue an alarm to the operator to prompt the equipment to be repaired, thereby improving the efficiency of welding processing and reducing the downtime of equipment failure.

[0022] like Figure 2 , Figure 4 , Figure 5As shown, the release mechanism 5 includes a locking crossbar 51 that moves up and down in the upper part of the inner cavity of the rotating shell 22, a locking toothed ring 52 that is circumferentially fixed in the lower part of the inner cavity of the protective shell 21, locking toothed grooves 53 that are symmetrically opened on the bottom surfaces of the left and right ends of the locking crossbar 51 and movably connected to the locking toothed ring 52, a semi-annular protrusion 54 fixed on the right side of the lower part of the inner cavity of the protective shell 21 above the locking toothed ring 52, a moving block 55 that slides left and right in the middle of the upper surface of the locking crossbar 51, two connecting rods 56 that are symmetrically fixed on the left and right sides of the moving block 55 and penetrate the two ends of the locking crossbar 51 respectively, and a pneumatic mechanism 8 that is set in the lower part of the inner cavity of the rotating shell 22 and communicates with the vent 25 for inert gas flow to drive the locking crossbar 51 to move upward. One end of the docking rod 56 is movably connected to the semi-annular protrusion 54. Two sets of first compression springs 57 for driving the locking crossbar 51 to move downward are symmetrically arranged on the left and right sides of the top surface of the inner cavity of the rotating shell 22. A connecting block fixedly connected to the center of the bottom surface of the support shell 3 is vertically slidably installed on the top surface of the moving block 55. A sliding groove is opened laterally on the upper surface of the locking crossbar 51. The front and rear side walls of the moving block 55 are slidably connected to the front and rear sides of the inner cavity of the sliding groove. A second compression spring 58 is sleeved on the outer surface of the docking rod 56. The two ends of the second compression spring 58 are fixedly connected to the side wall of the moving block 55 and one side of the inner cavity of the sliding groove, respectively. Two positioning rods are symmetrically fixedly installed on the left and right sides of the moving block 55. Two positioning grooves are symmetrically opened on the left and right sides of the top surface of the inner cavity of the rotating shell 22. The positioning rods are movably connected to the positioning grooves.

[0023] When the inert protective gas injection suddenly fails and is interrupted, the pressure of the inert gas in the protective housing 21 decreases. Driven by the elastic force of the first compression spring 57, the locking crossbar 51 moves down, causing the locking tooth groove 53 to engage with the locking tooth ring 52. This allows the rotating housing 22 to drive the support housing 3 to stop rotating the electronic expansion valve sleeve and valve seat. At the same time, when the locking crossbar 51 moves down, it causes the docking rod 56 to move down. When one end of the docking rod 56 is pressed against the semi-annular protrusion 54, it can push the moving block 55 to move. The movement of the moving block 55 can drive the support housing 3 to move through the connecting block. When the support housing 3 moves, it cooperates with the pressing mechanism 6 to drive the electronic expansion valve sleeve and valve seat to move away from the welding torch.

[0024] like Figure 4 As shown, the pneumatic mechanism 8 includes a venting shell 81 fixed in the middle of the bottom surface of the inner cavity of the rotating shell 22, two connecting pipes 82 symmetrically connected to the left and right sides of the venting shell 81, an annular shell 83 fixedly sleeved on the lower part of the outer surface of the rotating shell 22 and connected to the inner cavity of the connecting pipes 82, and a lifting shell 84 that moves up and down in a sealed manner at the top opening of the venting shell 81. Among them, the lower part of the inner cavity of the protective shell 21 is provided with an annular groove, the annular shell 83 is connected to the inner cavity of the annular groove through a bearing, the inner cavity of the annular groove is connected to the inner cavity of the vent hole 25, and the top surface of the lifting shell 84 is fixedly connected to the center of the bottom surface of the locking crossbar 51. The pneumatic mechanism 8 also includes an expansion shell 85 connected to the top opening of the ventilation shell 81, an air inlet 86 circumferentially opened on the outer surface of the lifting shell 84, a telescopic bellows 87 connected to the bottom surface of the lifting shell 84, and an exhaust channel 88 circumferentially opened at the bottom of the rotating shell 22. The upper part of the lifting shell 84 penetrates the top surface of the expansion shell 85, the bottom end of the telescopic bellows 87 is fixedly connected to the bottom surface of the inner cavity of the vent shell 81, and the inner cavity of the exhaust channel 88 is connected to the lower part of the inner cavity of the telescopic bellows 87.

[0025] During use, the inert protective gas sprayed from the welding torch before welding enters the protective shell 21. With the continuous input of inert gas, the inert gas enters the inner cavity of the ventilation shell 81 through the vent hole 25, the annular shell 83, and the connecting pipe 82. The inert gas can push the lifting shell 84 to drive the locking crossbar 51 to move the locking tooth groove 53 upward and separate it from the locking tooth ring 52. When the locking crossbar 51 moves upward, it drives the docking rod 56 to separate from the semi-annular protrusion 54. Under the elastic force of the two second compression springs 58, the moving block 55 drives the electronic expansion valve sleeve and valve seat to approach the welding torch through the support shell 3. At the same time, after the lifting shell 84 enters the expansion shell 85, the inert gas is discharged to the outside of the equipment through the air inlet 86, the telescopic bellows 87, and the exhaust channel 88.

[0026] like Figure 6 As shown, the clamping mechanism 6 includes a mounting shell 61 that slides up and down at the center of the bottom surface of the sealing cover plate 23, a screw 62 threadedly installed at the center of the top surface of the sealing cover plate 23 for driving the mounting shell 61 to move up and down, a cone block 63 disposed in the inner cavity of the mounting shell 61, a connecting shell 64 disposed below the mounting shell 61 and fixedly connected to the middle of the bottom surface of the cone block 63, a set of balls 65 circumferentially and equidistantly disposed on the top surface of the inner cavity of the mounting shell 61, a first contact block 66 fixed in the middle of the top surface of the inner cavity of the mounting shell 61, and a second contact block 67 fixed in the top surface of the inner cavity of the connecting shell 64 and penetrating to the upper surface of the cone block 63. The bottom surface of the first contact block 66 is movably connected to the upper surface of the second contact block 67, the upper surface of the cone block 63 is movably connected to the ball 65, an electrode post is fixedly installed on one side of the upper surface of the sealing cover plate 23, the electrode post is connected to the first contact block 66 by a wire, and the inner cavity of the mounting shell 61 is inverted cone shape.

[0027] In use, when one end of the connecting rod 56 is pressed against the semi-annular protrusion 54, the moving block 55 drives the support shell 3 to move and cooperate with the clamping mechanism 6 to move the electronic expansion valve sleeve and valve seat away from the welding gun. Under the action of the ball 65, the electronic expansion valve sleeve can cause the connecting shell 64 to drive the cone block 63 and the second contact block 67 to move, so that the second contact block 67 is separated from the first contact block 66, thereby automatically disconnecting the power supply on the electronic expansion valve sleeve and the valve seat.

[0028] like Figure 7 As shown, the alarm mechanism 7 includes a mounting groove on the bottom surface of the movable block 55. Two first contact pieces 71 are symmetrically fixedly installed on the left and right sides of the inner cavity of the mounting groove. A sounding alarm 72 is fixedly installed in the middle of the top surface of the inner cavity of the mounting groove. The sounding alarm 72 has a built-in battery. A second contact piece 73 is fixedly installed in the middle of the bottom surface of the inner cavity of the slide. The first contact pieces 71 and the second contact pieces 73 are movably connected.

[0029] When in use, when one end of the docking rod 56 is pressed against the semi-annular protrusion 54 and pushes the moving block 55 to move, the moving block 55 moves and causes the first contact piece 71 and the second contact piece 73 to fit together, so that the first contact piece 71, the second contact piece 73 and the sound alarm 72 form a complete circuit, which promptly issues an alarm to the operator to remind them to maintain the equipment, thereby improving the efficiency of welding processing and reducing the downtime of equipment failure.

[0030] Working principle and usage process of this invention: Before use, insert the electronic expansion valve seat vertically into the housing 3, then place the electronic expansion valve sleeve on top of the electronic expansion valve seat, and then close the sealing cover 23. Secure the sealing cover 23 with spring clips and slots. Insert the welding torch into the interface 24, ensuring the outer surface of the welding torch fits against the inner cavity of the interface 24, thus sealing the interface 24. Start the welding torch to continuously spray inert protective gas into the protective housing 21. The inert protective gas enters the inner cavity of the vent housing 81 through the vent hole 25, annular housing 83, and connecting pipe 82. In the process, the inert gas can push the lifting shell 84 to drive the locking crossbar 51 to move the locking tooth groove 53 upward and separate it from the locking tooth ring 52. When the locking crossbar 51 moves upward, it drives the docking rod 56 to separate from the semi-annular protrusion 54. Under the elastic force of the two second compression springs 58, the moving block 55 drives the electronic expansion valve sleeve and valve seat to approach the welding gun through the support shell 3, which is convenient for welding. At the same time, after the lifting shell 84 enters the expansion shell 85, the inert gas is discharged to the outside of the equipment through the air inlet 86, the telescopic bellows 87 and the exhaust channel 88. When the support shell 3 moves the electronic expansion valve sleeve and valve seat closer to the welding gun and to the center of the rotating shell 22, the other end of the welding gun equipment is clamped on the electrode post. The operator manually turns the screw 62 to rotate and drive the mounting shell 61 to move the cone block 63 downward. The downward movement of the cone block 63 causes the connecting shell 64 and the second contact block 67 to move downward. At this time, the connecting shell 64 is fitted onto the top of the electronic expansion valve sleeve, and the second contact block 67 contacts the top of the electronic expansion valve sleeve. As the mounting shell 61 continues to move downward, the upper surface of the second contact block 67 will eventually be in contact with the bottom surface of the first contact block 66, which can energize the electronic expansion valve sleeve and facilitate TIG welding. At the same time, the top surface of the cone block 63 is in contact with the bottom surface of the ball 65. Then, the tungsten electrode that starts welding can perform self-fusion welding on the electronic expansion valve sleeve and the valve seat. When the inert gas injection suddenly fails and is interrupted, the inert gas pressure inside the protective housing 21 decreases. Driven by the elastic force of the first compression spring 57, the locking crossbar 51 moves downward, causing the locking tooth groove 53 to engage with the locking tooth ring 52. This allows the rotating housing 22 to drive the support housing 3, stopping the rotation of the electronic expansion valve sleeve and valve seat. Simultaneously, as the locking crossbar 51 moves downward, it also causes the docking rod 56 to move downward. When one end of the docking rod 56 presses against the semi-annular protrusion 54, it pushes the moving block 55 to move. The movement of the moving block 55, through the connecting block, causes the support housing 3 to move. When the support housing 3 moves, it cooperates with the clamping mechanism 6 to move the electronic expansion valve sleeve and valve seat away from the welding torch, thus moving the electronic expansion valve sleeve and valve seat away from the welding torch. Separated from the welding torch, it can automatically disconnect the power supply to the electronic expansion valve sleeve and the valve seat, thereby protecting the electronic expansion valve sleeve from damage and scrapping. This facilitates the re-welding of the electronic expansion valve sleeve, reduces economic losses, and improves welding effect and equipment practicality. At the same time, when one end of the connecting rod 56 and the semi-annular protrusion 54 press against each other to push the moving block 55 to move, the moving block 55 moves and causes the first contact piece 71 and the second contact piece 73 to fit together. Thus, the first contact piece 71, the second contact piece 73, and the audible alarm 72 form a complete circuit, which promptly issues an alarm to the operator to prompt equipment maintenance, thereby improving welding efficiency and reducing equipment downtime.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electronic expansion valve sleeve welding process rotating device characterized by, The utility model provides an electronic expansion valve seat separation device, including frame (1), the protection mechanism (2) of setting on the upper surface of frame (1), the support shell (3) for placing electronic expansion valve seat is set in the lower part of the inner chamber of protection mechanism (2), the drive motor (4) is fixed vertically in the frame (1) in, The protection mechanism (2) includes a protection shell (21) fixed on the upper surface of the frame (1) by a support rod, a rotating shell (22) movably mounted in an opening at the bottom of the protection shell (21) by a bearing seal, a separation mechanism (5) arranged in the inner chamber of the rotating shell (22) and the lower part of the inner chamber of the protection shell (21) for driving the support shell (3) to separate the electronic expansion valve seat and the sleeve from the welding torch, a sealing cover plate (23) hinged to an opening at the top surface of the protection shell (21), a pressing mechanism (6) arranged at the center of the bottom surface of the sealing cover plate (23) for limiting the expansion valve sleeve, and an alarm mechanism (7) arranged on the separation mechanism (5) for prompting the operator. The right side of the inner chamber of the protection shell (21) is provided with a mating port (24) adapted to the welding torch, the lower part of the inner chamber of the protection shell (21) is provided with a ventilation hole (25) for the flow of inert gas to drive the separation mechanism (5) to operate, the bottom surface of the support shell (3) is slidably connected to the upper surface of the rotating shell (22), and the top end of the output shaft of the drive motor (4) is fixedly connected to the center of the bottom surface of the rotating shell (22).

2. The electronic expansion valve sleeve welding processing rotating device according to claim 1, characterized in that: The separation mechanism (5) includes a locking crossbar (51) moving up and down in the inner chamber of the rotating shell (22), a locking tooth ring (52) fixed circumferentially in the lower part of the inner chamber of the protection shell (21), locking tooth grooves (53) symmetrically provided at the bottom surfaces of the left and right ends of the locking crossbar (51) and movably connected to the locking tooth ring (52), a semi-annular protrusion (54) fixed above the locking tooth ring (52) on the right side of the lower part of the inner chamber of the protection shell (21), a moving block (55) arranged on the middle part of the upper surface of the locking crossbar (51) and sliding left and right, two abutting rods (56) fixed symmetrically on the left and right sides of the moving block (55) and penetrating through the two ends of the locking crossbar (51), respectively, and a pneumatic mechanism (8) arranged in the lower part of the inner chamber of the rotating shell (22) and communicating with the ventilation hole (25) for driving the locking crossbar (51) to move upward by the flow of inert gas. One end of the abutting rod (56) is movably connected to the semi-annular protrusion (54), two groups of first compression springs (57) are symmetrically arranged on the left and right sides of the top surface of the inner chamber of the rotating shell (22) for driving the locking crossbar (51) to move downward, and a connecting block fixedly connected to the center of the bottom surface of the support shell (3) is vertically and slidably mounted on the top surface of the moving block (55).

3. An electronic expansion valve sleeve welding processing rotating device according to claim 2, characterized in that: The upper surface of the locking cross bar (51) is transversely provided with a sliding groove, the front and rear sidewalls of the moving block (55) are slidably connected with the front and rear sides of the inner cavity of the sliding groove, and the outer surface of the butt joint rod (56) is sleeved with a second compression spring (58), and the two ends of the second compression spring (58) are fixedly connected with the sidewall of the moving block (55) and one side of the inner cavity of the sliding groove respectively.

4. The electronic expansion valve sleeve welding processing rotating device according to claim 3, characterized in that: The left and right sides of the moving block (55) are symmetrically provided with two positioning rods, the inner cavity top surface of the rotating shell (22) is symmetrically provided with two positioning grooves, and the positioning rods are movably connected with the positioning grooves.

5. The electronic expansion valve sleeve welding processing rotating device according to claim 3, characterized in that: The pneumatic mechanism (8) comprises a ventilation shell (81) fixed in the middle of the bottom surface of the inner cavity of the rotating shell (22), two communication pipes (82) symmetrically communicated on the left and right sides of the ventilation shell (81), an annular shell (83) fixedly sleeved on the lower part of the outer surface of the rotating shell (22) and communicated with the inner cavities of the communication pipes (82), and a lifting shell (84) movably sealed on the top opening of the ventilation shell (81). The inner cavity of the protection shell (21) is provided with an annular groove in the lower part, the annular shell (83) is movably connected with the inner cavity of the annular groove through a bearing, the inner cavity of the annular groove is communicated with the inner cavity of the ventilation hole (25), and the top surface of the lifting shell (84) is fixedly connected with the bottom surface center of the locking cross bar (51).

6. An electronic expansion valve sleeve welding processing rotating device according to claim 5, characterized in that: The pneumatic mechanism (8) further comprises an expansion shell (85) communicated on the top opening of the ventilation shell (81), an air inlet hole (86) circumferentially provided on the outer surface of the lifting shell (84), a telescopic bellows (87) communicated on the bottom surface of the lifting shell (84), and an exhaust passage (88) circumferentially provided on the bottom of the rotating shell (22). The upper part of the lifting shell (84) penetrates the top surface of the expansion shell (85), the bottom end of the telescopic bellows (87) is fixedly connected with the inner cavity bottom surface of the ventilation shell (81), and the inner cavity of the exhaust passage (88) is communicated with the inner cavity lower part of the telescopic bellows (87).

7. An electronic expansion valve sleeve welding processing rotating device according to claim 1, characterized in that: The pressing mechanism (6) comprises a mounting shell (61) movably arranged on the center of the bottom surface of the sealing cover plate (23), a screw rod (62) threadedly installed on the center of the top surface of the sealing cover plate (23) and used for driving the mounting shell (61) to move up and down, a taper block (63) arranged in the inner cavity of the mounting shell (61), a connecting shell (64) fixedly connected with the middle of the bottom surface of the taper block (63) and arranged below the mounting shell (61), a group of ball bearings (65) equidistantly arranged on the top surface of the inner cavity of the mounting shell (61), a first contact block (66) fixedly arranged on the middle of the top surface of the inner cavity of the mounting shell (61), and a second contact block (67) fixedly arranged in the inner cavity of the connecting shell (64) and penetrating to the upper surface of the taper block (63). The bottom surface of the first contact block (66) is movably connected with the upper surface of the second contact block (67), the upper surface of the taper block (63) is movably connected with the ball (65), the upper surface of the sealing cover plate (23) is fixedly installed with an electrode column on one side, the electrode column is connected with the first contact block (66) through a wire, and the inner cavity of the mounting shell (61) is in an inverted conical shape.

8. The electronic expansion valve sleeve welding processing rotating device according to claim 3, characterized in that: The alarm mechanism (7) comprises a mounting groove formed in the bottom surface of the moving block (55), two first touch pieces (71) are symmetrically and fixedly installed on the left and right sides of the inner cavity of the mounting groove, a sound alarm (72) is fixedly installed on the top surface of the inner cavity of the mounting groove, and a second touch piece (73) is fixedly installed on the bottom surface of the inner cavity of the mounting groove; the first touch piece (71) is movably connected with the second touch piece (73).

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