Welding device for heat conduction pipe production

Abstract

The invention discloses a heat conduction pipe production welding device, and relates to the field of heat conduction pipe welding, the heat conduction pipe production welding device comprises an inner supporting rod, the surface of the inner supporting rod is coated with an expansion layer, the inner supporting rod is internally provided with a flow guide channel, and the expansion layer has a tensioning state and a contraction state and is tightly attached to the surface of the inner supporting rod in the contraction state; the maximum diameters of the inner supporting rod and the expansion layer are smaller than the diameters of the heat conduction pipe and the circular pipe; according to the heat conduction pipe production welding device, through the arranged inner supporting rod and the expansion layer on the inner supporting rod, the inner supporting rod can easily enter the middle of a heat conduction pipe and the middle of a round pipe with the small diameter when the expansion layer is in a contraction state, and when the expansion layer is in an expansion state, a gap formed when the diameter of the inner supporting rod is smaller than the diameter of the heat conduction pipe and the diameter of the round pipe can be made up; and meanwhile, after welding is completed, the expansion layer is switched to the contraction state, the gap is formed again, and therefore the inner supporting rod can be conveniently moved out of the inner walls of the heat conduction pipe and the circular pipe.

Description

Technical Field

[0001] The invention relates to a heat-conducting pipe welding technology, and in particular to a heat-conducting pipe production welding device. Background Art

[0002] During the production process of heat pipes, medium needs to be filled. The heat pipes need to be connected to round pipes and connected to medium conveying equipment for filling. The ends of the round pipes and the heat pipes are generally connected by welding. The Chinese invention patent with publication number CN114227131A discloses a micro heat pipe welding auxiliary device and a welding method. The micro heat pipe and the process round pipe are precisely welded by setting a welding auxiliary device. The locking assembly, the supporting guide assembly and the piercing needle are mainly set to make the heat pipe and the process round pipe coaxial and the welding part fit tightly, thereby improving the welding accuracy. Although it is used for welding micro heat pipes, it is also suitable for welding heat pipes of conventional sizes.

[0003] However, in order to facilitate the insertion and removal of the piercing needle, the diameter of the piercing needle needs to be smaller than the inner diameter of the heat pipe and the round tube, which in turn leaves a certain gap between the surface of the piercing needle and the inner wall of the heat pipe and the process round tube. The existence of the gap will result in the two being not in an optimal coaxial state when they are fitted tightly, especially when the wall thickness of the process round tube and the heat pipe is thin and there is a difference. Since the wall thickness has a certain relationship with the coaxiality (when the wall thickness of both is thick, the low coaxiality generally does not affect the connection after welding and can be ignored. When the wall thickness is thin, the lower the coaxiality, the more it affects the welding effect), the existence of the gap may result in incomplete connection between the heat pipe and the process round tube during welding, affecting the subsequent medium filling. Summary of the invention

[0004] The object of the present invention is to provide a heat conducting pipe production welding device to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above object, the present invention provides the following technical solution: a heat conducting tube production welding device, which is used for coaxial welding of a heat conducting tube and a round tube, comprising:

[0006] An inner support rod, the surface of which is covered with an expansion layer, and a flow guide channel for inputting or outputting fluid between the expansion layer and the inner support rod is provided inside the inner support rod, and the expansion layer has a tensioned state and a contracted state, and in the contracted state, the expansion layer is tightly attached to the surface of the inner support rod, and the maximum diameters of the inner support rod and the expansion layer are smaller than the diameters of the heat-conducting tube and the round tube; a blocking member is provided at the first position and / or the second position on the axis of the inner support rod, wherein the first position and the second position are respectively located at the two end positions of the support rod; in the contracted state, the inner support rod is inserted into the heat-conducting tube and the round tube, and then the heat-conducting tube or the round tube is moved so that the heat-conducting tube and the round tube are pressed against each other with the cooperation of the blocking member, and finally the expansion layer is switched to the expanded state to coaxially fix the heat-conducting tube and the round tube;

[0007] The welding mechanism is used for welding the abutment between the heat conducting pipe and the round pipe.

[0008] Furthermore, the inner support rod is installed on a fixed seat, one side of the fixed seat is connected to a moving member, and the moving member is used to drive the fixed seat to move along the axial direction of the inner support rod.

[0009] Furthermore, the moving part includes a first track arranged on the workbench, and a first slider is slidably connected to the first track, wherein the first track is arranged along the axial direction of the inner support rod, the top of the first slider is connected to the fixed seat, and one side of the first slider is connected to a driving part A for driving it to move along the first track.

[0010] Furthermore, two blocking members are provided, which are respectively located at a first position and a second position, and one of the blocking members is provided at one side of the fixing seat and moves with the fixing seat.

[0011] Furthermore, a buffer mechanism is arranged between the fixed seat and the adjacent blocking member, and the buffer mechanism includes a buffer plate, one end of the buffer plate is slidably connected to the inner wall of the fixed seat, and the other end of the buffer plate is fixedly connected to the blocking member, and a first spring is arranged on one end of the buffer plate close to the blocking member and one side of the fixed seat.

[0012] Furthermore, a cylindrical active cavity is provided in the fixed seat, a piston plate is slidably connected in the active cavity, one side of the piston plate is fixedly connected to one end of the buffer plate, and a first channel for connecting the active cavity to an external air source and a second channel for connecting the active cavity to a guide channel are provided on the fixed seat.

[0013] Furthermore, the fixed seat is installed on the first slide via a rotating member, and the rotating member is used to drive the fixed seat to rotate around the central axis of the inner support rod.

[0014] Furthermore, a blocking member is provided and is arranged on one side of the fixing seat, the blocking member is slidably connected to the inner wall of the fixing seat, and a second spring is connected between the blocking member and the inner wall of the fixing seat.

[0015] Furthermore, the inner support rod is composed of a first rod, a second rod and a third rod, one end of the first rod is rotatably connected to the fixed seat, the second rod penetrates the first rod and the inner wall of the fixed seat and is movably connected to the first rod and the inner wall of the fixed seat, the inner wall of one end of the third rod is rotatably connected to the surface of one end of the second rod, the surfaces of the first rod and the third rod are both covered with an expansion layer, and the first rod and the third rod are both provided with a guide channel, the second rod is hollow, and an arc channel begins to be formed at the middle position of the second rod near the first rod, and an annular channel is formed at one end of the second rod near the third rod.

[0016] Furthermore, a sliding nail is fixedly connected to one side of the blocking member close to the first rod, and an oblique groove is provided on the surface of the first rod, which is slidably connected to the oblique groove, and drives the first rod to rotate when the slide moves on the oblique groove.

[0017] Compared with the prior art, the heat conduction pipe production welding device provided by the present invention has the following beneficial effects:

[0018] The heat-conducting tube production welding device is provided with an inner support rod and an expansion layer thereon. After the expansion layer is tightened, it is pressed against the inner wall of the heat-conducting tube and the round tube, so that the two are in a relatively coaxial state, and the inner support rod can easily enter the middle of the heat-conducting tube and the round tube with a smaller diameter when the expansion layer is in a contracted state. When in the tightened state, it can make up for the gap when the diameter of the inner support rod is smaller than the diameter of the heat-conducting tube and the round tube, so that it can fit tightly against the inner wall of the heat-conducting tube and the round tube, ensure the coaxiality during welding, and improve the welding effect. At the same time, after the welding is completed, the expansion layer is switched to the contracted state here, so that the gap is formed again, so that it is convenient for the inner support rod to be removed from the inner wall of the heat-conducting tube and the round tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0020] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0021] Figure 2 The embodiment of the present invention provides Figure 1 The enlarged view of point A in the middle;

[0022] Figure 3 The embodiment of the present invention provides Figure 1 Schematic diagram of the local longitudinal section structure;

[0023] Figure 4 The embodiment of the present invention provides Figure 3 The enlarged view of point B in the middle;

[0024] Figure 5 The embodiment of the present invention provides Figure 3 Enlarged view of point C in the middle;

[0025] Figure 6 A schematic cross-sectional view of an inner support rod provided by an embodiment of the present invention;

[0026] Figure 7 A partial cross-sectional view of a fixing seat after a buffer mechanism is installed according to an embodiment of the present invention;

[0027] Figure 8 A schematic diagram of the overall structure of another inner support rod provided by an embodiment of the present invention;

[0028] Fig. 9 A schematic structural diagram of an inner support rod in a separated state provided by an embodiment of the present invention;

[0029] Fig.10 The embodiment of the present invention provides Fig. 9 The enlarged view of point D in the middle;

[0030] Fig.11 The embodiment of the present invention provides Fig. 9 Enlarged view of point E in the middle.

[0031] Description of reference numerals:

[0032] 1. Inner support rod; 11. First rod; 12. Second rod; 13. Third rod; 14. Arc channel; 15. Annular channel; 16. Inclined groove; 2. Expansion layer; 3. Diversion channel; 4. Blocking member; 41. Connecting plate; 42. Baffle plate; 43. Rotating column; 44. Sliding nail; 5. Fixed seat; 51. Active cavity; 52. Piston plate; 53. First channel; 54. Second channel; 6. Moving member; 61. Workbench; 62. First track; 63. First slider; 64. Support frame; 7. Buffer mechanism; 71. Buffer plate; 72. First spring; 73. Guide rod; 74. Second spring; 8. Rotating member; 81. Annular rack; 82. First gear;

[0033] 100. Heat transfer pipe; 200. Round pipe. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0035] For examples, see Figure 1 - Fig.11 A heat conducting pipe 100 production welding device is used for coaxially welding the heat conducting pipe 100 and the round pipe 200, and the welding device comprises:

[0036] An inner support rod 1, whose surface is covered with an expansion layer 2, and an inner guide channel 3 for inputting or outputting fluid between the expansion layer 2 and the inner support rod 1 is opened inside the inner support rod 1, and the expansion layer 2 has a tensioned state and a contracted state. In the contracted state, the expansion layer 2 is tightly attached to the surface of the inner support rod 1, and the maximum diameters of the inner support rod 1 and the expansion layer 2 are smaller than the diameters of the heat-conducting pipe 100 and the round tube 200; a blocking member 4 is provided at the first position and / or the second position on the axis of the inner support rod 1, wherein the first position and the second position are respectively located at the two end positions of the support rod; in the contracted state, the inner support rod 1 is inserted into the heat-conducting pipe 100 and the round tube 200, and then the heat-conducting pipe 100 or the round tube 200 is moved so that the heat-conducting pipe 100 and the round tube 200 are pressed against each other with the cooperation of the blocking member 4, and finally the expansion layer 2 is switched to the expanded state to coaxially fix the heat-conducting pipe 100 and the round tube 200;

[0037] The welding mechanism is used to weld the abutment portion between the heat conducting pipe 100 and the round pipe 200 .

[0038] By means of the provided inner support rod 1, the heat-conducting tube 100 and the round tube 200 are sequentially passed on the surface of the inner support rod 1 before welding. The heat-conducting tube 100 and the round tube 200 should have at least a portion located on the area of ​​the expansion layer 2, so that the heat-conducting tube 100 and the round tube 200 are close to each other and pressed tightly. The heat-conducting tube 100 and the round tube 200 can be moved manually, or a moving part 6 that is automatically driven can be provided to drive the heat-conducting tube 100 or the round tube 200 to move, such as a robot. After the heat-conducting tube 100 and the round tube 200 are pressed tightly, the end faces to be welded of the two are fitted together, but their coaxiality is poor. The coaxiality of the two cannot be improved by only using the provided inner support rod 1. The reason has been explained in the above and will not be elaborated here. Therefore, by means of the provided expansion layer 2, a fluid with a certain external pressure is passed through the fluid-conducting tube 100 to be welded. The channel 3 is transported to the expansion layer 2, so that the expansion layer 2 switches to a tightened state. After the expansion layer 2 is tightened, it will be pressed against the inner walls of the heat-conducting tube 100 and the round tube 200, so that the two are in a relatively coaxial state, and then the welding operation is performed. In this way, the inner support rod 1 can easily enter the middle of the heat-conducting tube 100 and the round tube 200 with a smaller diameter when the expansion layer 2 is in a contracted state. When in a tightened state, the gap when the diameter of the inner support rod 1 is smaller than the diameter of the heat-conducting tube 100 and the round tube 200 is made up, so that it fits tightly to the inner walls of the heat-conducting tube 100 and the round tube 200, ensuring the coaxiality during welding and improving the welding effect. At the same time, after the welding is completed, the expansion layer 2 switches to a contracted state here, so that the gap is formed again, so that it is convenient for the inner support rod 1 to be removed from the inner walls of the heat-conducting tube 100 and the round tube 200;

[0039] In one embodiment of the present invention, the fluid may be gas or liquid, preferably gas, and the flow guide channel 3 is connected to an external gas source device;

[0040] When welding the welding structure, the connection position of the two can be welded by rotating the heat pipe 100 and the circular tube 200, or the welding mechanism can be installed on a circular track and welded by rotating around the connection position of the heat pipe 100 and the circular tube 200. Since it is a prior art, it will not be described in detail here and is not drawn in the figure.

[0041] In one embodiment of the present invention, the inner support rod 1 is installed on the fixed seat 5 , and one side of the fixed seat 5 is connected to the moving member 6 , and the moving member 6 is used to drive the fixed seat 5 to move along the axial direction of the inner support rod 1 .

[0042] In one embodiment of the present invention, the moving member 6 includes a first track 62 disposed on a workbench 61, and a first slider 63 is slidably connected to the first track 62, wherein the first track 62 is disposed along the axial direction of the inner support rod 1, the top of the first slider 63 is connected to the fixed seat 5, and one side of the first slider 63 is connected to a driving member A (not shown in the figure) for driving it to move along the first track 62;

[0043] In one embodiment of the present invention, the A driving member comprises a threaded rod, the surface of the threaded rod is threadedly connected to the inner wall of the first slider 63, and the output end of the electric motor, pneumatic motor or hydraulic motor at one end of the threaded rod drives the threaded rod to rotate, so that the first slider 63 moves along the first track 62;

[0044] In one embodiment of the present invention, the A driving member is a cylinder or a hydraulic cylinder or an electric telescopic rod, the piston rod of the cylinder or the piston rod of the hydraulic cylinder or the telescopic rod of the electric telescopic rod is connected to the first slider 63, and the cylinder body of the cylinder or the cylinder body of the hydraulic cylinder or the cylinder body of the electric telescopic rod is arranged on the workbench 61 along the direction of the first track 62.

[0045] In one embodiment of the present invention, two blocking members 4 are provided, which are respectively located at a first position and a second position, wherein one blocking member 4 is provided at one side of the fixing seat 5 and moves with the fixing seat 5. It should be understood that at this time, the blocking member 4 and the inner support rod 1 remain relatively stationary;

[0046] After the heat-conducting tube 100 and the round tube 200 to be welded are inserted into the inner support rod 1, the fixed seat 5 is moved by the A driving member to drive the inner support rod 1 and the heat-conducting tube 100 and the round tube 200 thereon to move synchronously. During the movement, one side of the heat-conducting tube 100 or the round tube 200 will first contact one of the blocking members 4. When the two pipes (referring to the heat-conducting tube 100 and the round tube 200) respectively abut the two blocking members 4, the blocking member 4 located on the fixed seat 5 will drive the pipe abutting therewith to move toward the other pipe, and finally abut against each other under the obstruction of the two blocking members 4, and complete the abutment after a certain extrusion force is pressed against each other, and then the expansion layer 2 is switched to the tensioned state to move the heat-conducting tube 100 and the round tube 200 to a relatively coaxial state. It should be understood that the coaxial state here is not absolute, and it still has a certain error, but the error has been greatly reduced compared with the method of the prior art, and the error can be ignored in actual operation.

[0047] It should be noted that there is no order when the heat-conducting pipe 100 and the round tube 200 are inserted into the inner support rod 1. If one of them is not in a shape with a length that can be inserted, there may be an order, which has no effect on the implementation of this solution. In addition, when inserting the heat-conducting pipe 100 and the round tube 200, the pipe that is inserted first (any one of the heat-conducting pipe 100 or the round tube 200) can be moved to abut against the blocking member 4 on the fixing seat 5, which can effectively shorten the travel required for the pipe to be inserted and removed before and after the welding of the fixing seat 5.

[0048] When the heat conducting tube 100 and the round tube 200 are pressed against each other with the cooperation of the two blocking members 4, a certain squeezing force is required. If the squeezing force is too small, the tightness of the two will not be enough, and they are easy to separate when the expansion layer 2 is tightened. Once the separation gap reaches a certain degree, it will affect the welding. If the squeezing force is too large, it will be difficult to move the heat conducting tube 100 or the round tube 200 when the expansion layer 2 is tightened. It is difficult to move the two to a coaxial state when the expansion layer 2 is tightened. If the fluid pressure is further increased, the pipe fittings are prone to be damaged by greater stress. In the existing method, a force sensor and a corresponding control system are usually set between the fixed seat 5 and the moving member 6 for control. Although this scheme can also be implemented in this way, the debugging process in this way is relatively cumbersome and the equipment cost is also high. Therefore, an implementation method for solving the above problems is proposed, specifically:

[0049] A buffer mechanism 7 is provided between the fixed seat 5 and the adjacent blocking member 4. The buffer mechanism 7 includes a buffer plate 71. One end of the buffer plate 71 is slidably connected to the inner wall of the fixed seat 5. The other end of the buffer plate 71 is fixedly connected to the blocking member 4. A first spring 72 is provided at one end of the buffer plate 71 close to the blocking member 4 and one side of the fixed seat 5.

[0050] In one embodiment of the present invention, in order to improve the stability of the buffer mechanism 7 when it is in action, at least two buffer plates 71 can be provided, which are distributed in a circular array on the circumference of the end of the inner support rod 1, and the blocking member 4 is annular, which is slidably arranged on the surface of the inner support rod 1, and a plurality of connecting plates 41 are connected to the circumference thereof, which are connected one by one to one side of the buffer plate 71;

[0051] When the heat conducting tube 100 and the round tube 200 are in contact with each other under the cooperation of the two blocking members 4, further moving the fixing seat 5 will make the two press against each other, and at this time the first spring 72 begins to be compressed. At this time, the extrusion force of the heat conducting tube 100 and the round tube 200 when they are pressed against each other will be related to the degree of compression of the first spring 72. A suitable compression distance of the first spring 72 can be obtained within a suitable range of the extrusion force.

[0052] The specific implementation scenario is as follows (the process before the first spring 72 is compressed is omitted):

[0053] The fixing seat 5 is moved to start compressing the first spring 72 until the first spring 72 is compressed to a desired compression distance range. In this range, the expansion layer 2 is switched to a tensioned state, and a suitable tensioning force is applied to the heat conducting pipe 100 and the round pipe 200 to make them coaxial.

[0054] It should be noted that at this time, the fixing seat 5 can continue to be moved until the first spring 72 is further compressed. Since the expansion layer 2 has a certain deformation ability, the further compression of the first spring 72 also corresponds to the increase in the extrusion force of the heat pipe 100 and the round tube 200 by the two blocking members 4, which will further precisely fit the two and avoid a certain slight separation between the two when the expansion layer 2 is tightened.

[0055] The appropriate compression range of the first spring 72 (hereinafter referred to as the first compression range) can be obtained through experiments, specifically conventional means, which will not be described in detail here. After obtaining the appropriate first compression range, it can be marked at the corresponding position, and the first spring 72 can be compressed to the first range before the expansion layer 2 works by controlling the movement stroke of the A driving member or setting a proximity sensor at the corresponding position. In some embodiments, when the fixing seat 5 is moved manually, it can also be operated by manual observation. The advantage of installing the first spring 72 in a visible position is that it is convenient to mark during experiments or manual operations, such as Figure 2 and Figure 5 As shown, a guide rod 73 may be further provided in the middle of the first spring 72. The guide rod 73 not only provides a restraining and guiding function but also can mark when the first spring 72 is compressed.

[0056] In one embodiment of the present invention, inspired by the above-mentioned embodiments, a method for switching the expansion layer 2 between the contraction state and the tension state is proposed. Specifically, a cylindrical active cavity 51 is provided in the fixed seat 5, a piston plate 52 is slidably connected in the active cavity 51, one side of the piston plate 52 is fixedly connected to one end of the buffer plate 71, and a first channel 53 for the active cavity 51 to connect to the external air source and a second channel 54 for the active cavity 51 to connect to the guide channel 3 are provided on the fixed seat 5;

[0057] like Figure 7 As shown, initially, the peripheral side of the piston plate 52 closes the first channel 53 and the second channel 54, and the expansion layer 2 is in a contracted state. When the first spring 72 is compressed to a first compression range, the peripheral side of the piston plate 52 moves out of the positions of the first channel 53 and the second channel 54, so that the first channel 53 is connected to the second channel 54 through the annular movable cavity 51. At this time, the expansion layer 2 can switch between a tensioned state and a contracted state.

[0058] The expanded state of the expansion layer 2 can be achieved by delivering gas of a certain pressure through an external air source device. The external air source device includes but is not limited to an air compressor with a pressure regulator. The contracted state of the expansion layer 2 can be achieved by switching the air guide channel to a state connected to the negative pressure device. The method is also common knowledge in the prior art and will not be described in detail here. It should be noted that the negative pressure device may not be connected and the connection of the air source may be directly disconnected. The expansion layer 2 will also autonomously discharge a certain amount of gas and shrink locally. When the welded combined pipe fitting is taken out, further exhaust can be carried out without affecting its removal. However, this method will make it difficult for the expansion layer 2 to shrink completely, and there will still be certain obstacles to the penetration of the pipe fitting in and out. In this embodiment, a negative pressure device is preferably used to switch the expansion layer 2 to a contracted state.

[0059] In one embodiment of the present invention, the fixing seat 5 is installed on the first slide by a rotating member 8. The rotating member 8 is used to drive the fixing seat 5 to rotate around the central axis of the inner support rod 1. When the fixing seat 5 rotates, the inner support rod 1 and the heat conducting pipe 100 and the round pipe 200 fixed thereon are driven to rotate, so as to facilitate welding of the abutting position of the two.

[0060] In one embodiment of the present invention, the rotating member 8 includes an annular rack 81 arranged on the peripheral side of the fixed seat 5, one side of the annular rack 81 is meshedly connected with a first gear 82, and the first gear 82 is connected to an electric motor, a pneumatic motor or a hydraulic motor for driving its rotation.

[0061] In one embodiment of the present invention, the blocking member 4 away from the fixed seat 5 is fixedly installed on the workbench 61, and the blocking member 4 includes a baffle 42, and a rotating column 43 is rotatably installed on the side of the baffle 42 close to the fixed seat 5. The end of the rotating column 43 is conical, and the axis of the rotating column 43 coincides with the axis of the inner support rod 1.

[0062] In one embodiment of the present invention, two support frames 64 are also installed on the workbench 61, which are used to support the heat pipe 100 and the round tube 200 respectively. The top longitudinal section of the support frame 64 is V-shaped. When in use, the heat pipe 100 and the round tube 200 are placed on the two support frames 64. The height of the support frames 64 is set so that the heat pipe 100 and the round tube 200 are roughly on the axis of the inner support rod 1. When the fixing seat 5 is moved, the inner support rod 1 can penetrate into the heat pipe 100 and the round tube 200.

[0063] In one embodiment of the present invention, for different heat pipes 100, one end thereof is not straight, and one end of some heat pipes 100 has a certain curvature, which causes the heat pipe 100 to be unable to cooperate with the blocking member 4. Therefore, it is difficult to continue to operate the heat pipe 100 by providing two blocking members 4. Here, another method is proposed. Specifically, one blocking member 4 is provided and is provided on one side of the fixing seat 5.

[0064] The blocking member 4 is slidably connected to the inner wall of the fixing seat 5, and a second spring 74 is connected between the blocking member 4 and the inner wall of the fixing seat 5;

[0065] The inner support rod 1 is composed of a first rod 11, a second rod 12 and a third rod 13. One end of the first rod 11 is rotatably connected to the fixing seat 5. The second rod 12 penetrates the first rod 11 and the inner wall of the fixing seat 5 and is movably connected to the first rod 11 and the inner wall of the fixing seat 5. The inner wall of one end of the third rod 13 is rotatably connected to the surface of one end of the second rod 12. The surfaces of the first rod 11 and the third rod 13 are both covered with an expansion layer 2, and the first rod 11 and the third rod 13 are both provided with a guide channel 3. The second rod 12 is hollow, and an arc channel 14 is provided at the middle position of the second rod 12 near the first rod 11. An annular channel 15 is provided at one end of the second rod 12 near the third rod 13.

[0066] like Figure 8 As shown, one end of the second rod 12 is mounted on the workbench 61 through a bracket, and a channel connecting the inner hollow and the external air source is opened at the end of the second rod 12;

[0067] It should be noted that the annular channel 15 is always connected to the guide channel 3 at the third rod 13, and the arc channel 14 is connected to the guide channel 3 of the first rod 11 and can be rotated and controlled, that is, after the first rod 11 rotates a certain angle, the arc channel 14 is connected to the guide channel 3, and at other angles, the arc channel 14 is located at the inner wall of the first rod 11 and abuts and is closed;

[0068] A sliding nail 44 is fixedly connected to one side of the blocking member 4 close to the first rod 11 . An inclined groove 16 is provided on the surface of the first rod 11 . The blocking member 4 is slidably connected to the inclined groove 16 , and drives the first rod 11 to rotate when the blocking member 4 moves on the inclined groove 16 .

[0069] When in use, the heat-conducting tube 100 and the round tube 200 to be welded are inserted into the inner support rod 1 (the round tube 200 is first inserted into the first rod 11), and then the expansion layer 2 of the third rod 13 is switched to a tightened state to fix the heat-conducting tube 100, and then the fixing seat 5 is moved to make the blocking member 4 push the round tube 200 to move. After the round tube 200 and the heat-conducting tube 100 are pressed tightly against each other, the blocking member 4 moves relative to the fixing seat 5 and compresses the second spring 74. When the blocking member 4 moves, the first rod 11 is driven to rotate through the sliding nail 44, so that the arc channel 14 rotates to the guide channel 3 of the first rod 11, so that the expansion layer 2 on the first rod 11 is switched to a tightened state, so that the heat-conducting tube 100 is coaxial with the round tube 200. After welding is completed, the fixing seat 5 is driven to return, the second spring 74 is released from compression and pushes the welded pipe fitting to move, and the first rod 11 is rotated to the initial position to close the guide channel 3 of the first rod 11.

[0070] It should be noted that, for some heavier heat pipes 100 , auxiliary supporting devices may be used to support them, so that when the heat pipes 100 are fixed by the third rod 13 , the inner support rod 1 will not be deformed because all the weight acts on the third rod 13 .

[0071] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A heat conducting pipe (100) production welding device, used for coaxially welding a heat conducting pipe (100) and a round pipe (200), characterized in that: include: An inner support rod (1) has an expansion layer (2) coated on its surface. A flow guide channel (3) is provided inside the inner support rod (1) for inputting or outputting a fluid between the expansion layer (2) and the inner support rod (1). The expansion layer (2) has a tensioned state and a contracted state. In the contracted state, the expansion layer (2) is tightly attached to the surface of the inner support rod (1), and the maximum diameter of the inner support rod (1) and the expansion layer (2) is smaller than the diameter of the heat conducting pipe (100) and the circular pipe (200). The first position and / or or a second position, wherein a blocking member (4) is provided, wherein the first position and the second position are respectively located at two end positions of the support rod; in a contracted state, the inner support rod (1) is inserted into the heat conducting tube (100) and the round tube (200), and then the heat conducting tube (100) or the round tube (200) is moved so that the heat conducting tube (100) and the round tube (200) are pressed against each other with the cooperation of the blocking member (4), and finally the expansion layer (2) is switched to an expanded state to coaxially fix the heat conducting tube (100) and the round tube (200); A welding mechanism is used to weld the abutment portion of a heat-conducting pipe (100) and a round pipe (200).

2. A heat-conducting pipe (100) production welding device according to claim 1, characterized in that: The inner support rod (1) is mounted on a fixed seat (5), one side of the fixed seat (5) is connected to a moving member (6), and the moving member (6) is used to drive the fixed seat (5) to move along the axial direction of the inner support rod (1).

3. A heat-conducting pipe (100) production welding device according to claim 2, characterized in that: The moving member (6) comprises a first track (62) arranged on a workbench (61), and a first slider (63) is slidably connected to the first track (62), wherein the first track (62) is arranged along the axial direction of the inner support rod (1), the top of the first slider (63) is connected to the fixed seat (5), and one side of the first slider (63) is connected to a driving member A for driving it to move along the first track (62).

4. A heat-conducting pipe (100) production welding device according to claim 2, characterized in that: Two blocking members (4) are provided, which are respectively located at a first position and a second position, and one of the blocking members (4) is provided at one side of the fixing seat (5) and moves with the fixing seat (5).

5. A heat-conducting pipe (100) production welding device according to claim 4, characterized in that: A buffer mechanism (7) is provided between the fixed seat (5) and the adjacent blocking member (4), the buffer mechanism (7) comprising a buffer plate (71), one end of the buffer plate (71) being slidably connected to the inner wall of the fixed seat (5), the other end of the buffer plate (71) being fixedly connected to the blocking member (4), and a first spring (72) being provided between one end of the buffer plate (71) close to the blocking member (4) and one side of the fixed seat (5).

6. A heat-conducting pipe (100) production welding device according to claim 5, characterized in that: A cylindrical active chamber (51) is provided in the fixed seat (5), a piston plate (52) is slidably connected in the active chamber (51), one side of the piston plate (52) is fixedly connected to one end of the buffer plate (71), and a first channel (53) for connecting the active chamber (51) to an external air source and a second channel (54) for connecting the active chamber (51) to the guide channel (3) are provided on the fixed seat (5).

7. A heat-conducting pipe (100) production welding device according to claim 2, characterized in that: The fixed seat (5) is installed on the first slide via a rotating member (8), and the rotating member (8) is used to drive the fixed seat (5) to rotate around the central axis of the inner support rod (1).

8. A heat-conducting pipe (100) production welding device according to claim 2, characterized in that: One blocking member (4) is provided and is arranged on one side of the fixing seat (5). The blocking member (4) is slidably connected to the inner wall of the fixing seat (5), and a second spring (74) is connected between the blocking member (4) and the inner wall of the fixing seat (5).

9. A heat-conducting pipe (100) production welding device according to claim 8, characterized in that: The inner support rod (1) is composed of a first rod (11), a second rod (12) and a third rod (13); one end of the first rod (11) is rotatably connected to a fixing seat (5); the second rod (12) penetrates the inner wall of the first rod (11) and the fixing seat (5) and is movably connected to the inner wall of the first rod (11) and the fixing seat (5); the inner wall of one end of the third rod (13) is rotatably connected to the surface of one end of the second rod (12); the surfaces of the first rod (11) and the third rod (13) are both covered with an expansion layer (2); the first rod (11) and the third rod (13) are both provided with a guide channel (3); the second rod (12) is hollow, and an arc channel (14) is provided at the middle position of the second rod (12) close to the first rod (11); and an annular channel (15) is provided at one end of the second rod (12) close to the third rod (13).

10. A heat-conducting pipe (100) production welding device according to claim 9, characterized in that: A sliding nail (44) is fixedly connected to one side of the blocking member (4) close to the first rod (11); an inclined groove (16) is provided on the surface of the first rod (11) and is slidably connected to the inclined groove (16). When the sliding member moves on the inclined groove (16), the first rod (11) is driven to rotate.

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