A welding device for the sidewall tail pipe of a solar double-pass pipe

Abstract

The present invention discloses a welding device for the side wall tail pipe of a solar double-pass tube. A transfer trolley is arranged between the welding station and the annealing station. An elevating frame and a supporting bracket are arranged on the transfer trolley to achieve the horizontal movement and vertical support of the outer tube. A horizontal movement driving component and a self-rotation driving component are arranged on the annealing station. A number of groups of self-rotation wheels are arranged on the self-rotation driving component, and the self-rotation wheels can move horizontally and rotate. A positioning combustion frame and a positioning hole-punching frame are correspondingly arranged on the welding station to achieve fixed-point heating and hole punching of the outer tube, creating conditions for the insertion of the tail pipe. A welding frame is correspondingly arranged on the welding station. A tail pipe feeding table is also arranged in cooperation with the welding frame. A tail pipe longitudinal movement track and a vertical frame are arranged on the tail pipe feeding table. A vertical lifting driving device is arranged on the vertical frame. A turning cylinder and a clamping cylinder are arranged on the lifting driving device. The clamping arm on the clamping cylinder can achieve fixed-point clamping of the tail pipe and insert it into the outer tube for hot melting welding.

Description

Technical Field

[0001] The present invention belongs to the technical field of solar double-pass tube welding equipment, and particularly relates to a welding device for the side wall tail tube of a solar double-pass tube. Background Art

[0002] As is well known, in the existing solar technology field, the solar double-pass tube, as a new type of heat collecting glass tube, has developed rapidly in the fields of solar heating and heat extraction in recent years.

[0003] The cross-sectional structure of such a solar double-pass tube is as Figure 1 shown. It is usually composed of an inner layer tube and an outer layer tube. During the manufacturing process of the combination of the inner layer tube and the outer layer tube end, a tail tube communicating with the outside is arranged in the chamber between the two for vacuum pumping. For the convenience of connecting with an external vacuum pumping device, such a tail tube should be arranged on the side wall of the outer layer tube.

[0004] In the prior art, when such a tail tube is combined with the side wall of the outer layer tube, a hole is made on the outer layer tube by manual burning by personnel, then the tail tube is inserted into the outer layer tube, and finally the two are combined by means of high-temperature combustion. This welding method has low efficiency, poor precision and requires welders to have a high technical level. The defective rate of products obtained by this technology is high and cannot fully meet the actual use requirements.

[0005] Those skilled in the art have disclosed various devices for welding tail tubes, such as the high-efficiency tail tube connecting device for a solar glass heat collecting tube with the publication number of CN117776511B. However, such a device is only applicable to the welding of the tail tube at the end of the outer layer tube and is not applicable to the welding of the side tail tube, and such a device cannot be directly used on the production line to improve production capacity.

[0006] In view of such drawbacks in the prior art, how can those skilled in the art design a welding device for the side wall tail tube of a solar double-pass tube through technical improvement? The purpose is to realize automatic welding of the side tail tube and can effectively improve the welding precision and welding efficiency. Summary of the Invention

[0007] In view of the above-mentioned disadvantages of the prior art, the present invention provides a welding device for the side wall tail tube of a solar double-pass tube, which combines an outer layer tube displacement device with an automatic tail tube picking, automatic loading, automatic welding and automatic annealing device, and can effectively improve the welding efficiency and welding precision.

[0008] The technical solution adopted by the present invention to solve its technical problems is:

[0009] A welding device for the side wall tail pipe of a solar double-pass tube, which includes a welding station and an annealing station. A transverse moving track is arranged between the welding station and the annealing station. A shifting trolley is arranged on the transverse moving track, and a lifting frame is arranged on the shifting trolley. A supporting bracket is arranged on the lifting frame to realize the transverse fixation and vertical support of the outer tube;

[0010] On the annealing station, an outer driving chain and an inner driving chain are arranged. A number of self-rotating wheels are arranged on the outer driving chain to realize circular movement. An inner driving chain is arranged to drive the self-rotating wheels to rotate in cooperation with the self-rotating wheels. An annealing spray head is also arranged on the annealing station;

[0011] A positioning combustion rack is correspondingly arranged on the welding station. A longitudinal moving track is arranged on the positioning combustion rack, and a longitudinal moving frame is arranged on the longitudinal moving track. A number of vertical combustion spray heads are arranged on the longitudinal moving frame. A longitudinal combustion driving device is arranged in cooperation with the longitudinal moving frame;

[0012] A positioning hole-punching rack is correspondingly arranged on the welding station. A telescopic driving part and a telescopic frame are arranged on the positioning hole-punching rack through a guiding part. A number of high-pressure nozzles are arranged on the telescopic frame;

[0013] A welding rack is correspondingly arranged on the welding station. A supporting disk is arranged on the welding rack, and a number of welding nozzles are arranged on the supporting disk.

[0014] The supporting disk is fixed on a turntable through a connecting part, and the turntable is arranged on a turntable driving device;

[0015] A tail pipe feeding table is arranged on the side of the welding rack. A tail pipe longitudinal moving track and a tail pipe longitudinal moving driving device are arranged on the tail pipe feeding table. A vertical frame is arranged on the tail pipe longitudinal moving track. A vertical lifting driving device is arranged on the vertical frame. A flipping cylinder is arranged on the lifting driving device. A clamping cylinder is fixed on the flipping cylinder. A clamping arm is arranged on the clamping cylinder. The clamping of the tail pipe can be realized through the clamping arm.

[0016] A tail pipe placement table is arranged in cooperation with the clamping arm. A number of tail pipe fixing holes are evenly arranged on the tail pipe placement table. The tail pipe placement table is fixed on a placement table rotation driving motor. By driving the tail pipe placement table, multiple tail pipe fixing holes can be respectively corresponded to the clamping arm to realize the supply of the tail pipe.

[0017] A positioning rack is also arranged on the welding station. The positioning rack is arranged at the front end or the rear end of the welding station. The positioning rack includes a horizontal supporting plate and a longitudinal baffle. The positioning of the outer tube is realized through the longitudinal baffle.

[0018] On the annealing station, there are front and rear side walls. On the front and rear side walls, there are double rows of driving wheels and outer driving motors. The driving of the outer driving chains on the front and rear side walls is realized through the double rows of driving wheels. The rotating wheels are respectively fixed on the outer driving chains and move horizontally along with the outer driving chains.

[0019] The rotating wheel includes a rubber wheel and a synchronous gear. The synchronous gear meshes with the inner driving chain to realize self-rotation driving. The inner driving chain is connected to the inner driving motor through an inner linkage shaft.

[0020] On the annealing station, there is also a horizontally extending rod. On the horizontally extending rod, there are multiple vertical plates. At the top of each vertical plate, there is a sleeve respectively. An annealing spray head is arranged inside the sleeve.

[0021] Around the turntable, there is a sensor fixing position. On the turntable, there is a sensor induction seat that cooperates with the sensor.

[0022] The flame-spraying ends of the multiple welding nozzles are arranged towards the joint of the tail pipe and the outer layer pipe, and the joint of the tail pipe and the outer layer pipe can be uniformly heated through multiple directions, avoiding the pipe explosion caused by uneven heating.

[0023] The present invention has the following beneficial effects: The present invention includes a welding station and an annealing station. A transfer trolley is arranged between the welding station and the annealing station. On the transfer trolley, there are a lifting frame and a support bracket for realizing the horizontal movement and vertical support of the outer layer pipe; the automatic horizontal movement of the outer layer pipe between each station can be realized, and the automation degree is high;

[0024] On the annealing station, there is a horizontal movement driving component and a self-rotation driving component. On the self-rotation driving component, there are several groups of rotating wheels. The rotating wheels can move horizontally and rotate, driving the outer layer pipe to be uniformly heated and annealed on the annealing station;

[0025] On the welding station, there are correspondingly arranged a positioning combustion rack and a positioning hole-punching rack to realize the fixed-point heating and hole-punching of the outer layer pipe, creating conditions for the insertion of the tail pipe; on the welding station, there is a welding rack correspondingly arranged. A tail pipe feeding table is also arranged in cooperation with the welding rack. On the tail pipe feeding table, there are a tail pipe longitudinal movement track and a vertical rack. On the vertical rack, there is a vertical lifting driving device. On the lifting driving device, there are a flipping cylinder and a clamping cylinder. Through the clamping arm on the clamping cylinder, the fixed-point clamping of the tail pipe can be realized and it can be inserted into the outer layer pipe for hot melting welding;

[0026] The structure design of the present invention is novel. It can realize steps such as the positioning, hole-making, tail pipe insertion, welding, and displacement annealing of the outer layer pipe. The whole process runs automatically and can complete the accurate insertion and the pulling of the tail pipe after welding. It has high efficiency and high precision, overcomes various drawbacks in the prior art, and is an ideal welding device for the side wall tail pipe of a solar double-pass pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described below in conjunction with the drawings and embodiments.

[0028] Figure 1 It is a schematic structural diagram of a solar double-pass tube;

[0029] Figure 2 It is a schematic structural diagram of the whole of the present invention;

[0030] Figure 3 It is a schematic side view structural diagram of the present invention;

[0031] Figure 4 It is a schematic top view structural diagram of the present invention;

[0032] Figure 5 It is a schematic structural diagram of the installation of the positioning combustion rack;

[0033] Figure 6 It is for Figure 2 The enlarged schematic diagram of the structure of area A in

[0034] Figure 7 It is for Figure 2 The enlarged schematic diagram of the structure of area B in

[0035] Figure 8 It is for Figure 4 The enlarged schematic diagram of the structure of area C in

[0036] Figure 9 It is for Figure 4 The enlarged schematic diagram of the structure of area D in

[0037] Figure 10 It is a schematic three-dimensional structure diagram of the front side of the welding station;

[0038] Figure 11 It is a schematic internal drive structure diagram of the annealing station;

[0039] Figure 12 It is for Figure 10 The enlarged schematic diagram of the structure of area E in

[0040] In the figure, 1 is the welding station, 11 is the base, 12 is the outer tube support seat, 13 is the horizontal support plate, 14 is the longitudinal baffle, 15 is the intermediate platform, 16 is the transverse movement track; 2 is the transfer trolley, 20 is the lifting frame drive motor, 21 is the linkage shaft, 22 is the fixing member, 23 is the drive gear, 24 is the vertical toothed belt, 25 is the lifting frame, 26 is the support bracket, 27 is the vertical guide rod, 28 is the vertical slider, 29 is the transverse movement drive motor, 291 is the transverse movement toothed belt; 3 is the annealing station, 31 is the outer side drive motor, 311 is the outer side drive chain, 32 is the inner side drive motor, 321 is the inner side linkage shaft, 322 is the inner side drive chain, 33 is the self-rotating wheel, 331 is the rubber wheel, 332 is the synchronous gear, 34 is the horizontal extension rod, 35 is the vertical plate, 36 is the sleeve, 37 is the annealing nozzle, 38 is the double-row drive wheel; 4 is the positioning and hole-punching frame, 41 is the telescopic drive cylinder, 42 is the telescopic guide block, 43 is the telescopic guide rod, 44 is the telescopic frame, 45 is the extension air pipe, 46 is the high-pressure nozzle, 47 is the gas connection part, 48 is the valve; 5 is the tail pipe placement table, 51 is the tail pipe placement hole, 52 is the placement table rotation drive motor; 6 is the clamping drive cylinder, 61 is the clamping arm, 62 is the clamping block; 7 is the tail pipe feeding table, 71 is the feeding lead screw, 72 is the tail pipe longitudinal movement drive motor, 73 is the vertical frame, 74 is the drive wheel, 75 is the driven wheel, 76 is the flipping cylinder, 77 is the extension rod; 8 is the positioning combustion frame, 81 is the longitudinal movement track, 82 is the longitudinal movement frame, 83 is the support column, 84 is the support piece, 85 is the vertical combustion nozzle, 86 is the longitudinal combustion drive cylinder; 9 is the welding frame, 91 is the turntable drive motor, 92 is the turntable, 93 is the peripheral frame, 931 is the sensor fixing position, 94 is the sensor induction seat, 95 is the vertical rod, 96 is the support disk, 97 is the nozzle fixing seat, 971 is the inclined fixing seat, 972 is the welding nozzle, 98 is the igniter; 10 is the double-pass tube, 101 is the tail pipe, 102 is the outer layer tube, 103 is the inner layer tube. Detailed implementation mode

[0041] The welding device structure disclosed by the present invention is relatively novel, and the accuracy and welding efficiency are significantly improved during the tail pipe welding process. In order to more clearly reflect the improved effects of the present invention, the structure and working steps of the present invention will be described in detail through specific implementation modes below.

[0042] Embodiment 1: Overall structure and functions of each part

[0043] A solar double-pass tube sidewall tail pipe welding device, as shown in the appendix Figure 1 As shown, a double-pass tube 10 includes an outer layer tube 102 and an inner layer tube 103 that are joined and sealed at both ends. A tail pipe 101 is provided on the sidewall of the outer layer tube 102, and the tail pipe 101 is used for vacuum extraction between the outer layer tube 102 and the inner layer tube 103.

[0044] This solar double-pass tube sidewall tail tube welding device is used for welding the tail tube 101 on the sidewall of such a double-pass tube 10. It should be noted that the welding mentioned in this patent application is achieved by burning combustible gas or combustible liquid under high temperature and high pressure to burn the joint part of the tail tube 101.

[0045] This solar double-pass tube sidewall tail tube welding device includes a welding station 1 and an annealing station 3. An intermediate platform 15 is arranged between the welding station 1 and the annealing station 3. A transverse movement track 16 is arranged on the intermediate platform 15, and a displacement trolley 2 is arranged on the transverse movement track 16. A transverse movement toothed belt 291 is locked or welded on the displacement trolley 2. A transverse movement driving motor 29 is arranged on the intermediate platform 15. The transverse movement driving motor 29 drives a gear to drive the transverse movement toothed belt 291, thereby driving the entire displacement trolley 2 to move transversely inside the welding station 1 and between the welding station 1 and the annealing station 3.

[0046] Two or more lifting frames 25 are arranged on the displacement trolley 2. In this embodiment, the lifting frames include two groups arranged left and right and run vertically synchronously. Bearing seats are arranged on the displacement trolley 2 to respectively fix two left and right linkage shafts 21. Driving gears 23 are respectively fixed at both ends of the linkage shaft 21 to drive the vertical toothed belt 24 through the driving gears 23. The vertical toothed belt 24 is arranged on the bottom surface of the lifting frame 25. Since the lifting frame 25 is arranged in a long strip shape and the vertical toothed belt 24 is only arranged at the position below its center, in order to prevent the lifting frame 25 from swinging left and right, vertical guide rods 27 and vertical sliders 28 are specially arranged between the bottom of the lifting frame 25 and the fixing member 22 for guiding when the lifting frame 25 moves vertically. A lifting frame driving motor 20 is arranged on the linkage shaft 21 for driving the rotation of the linkage shaft 21. A support bracket 26 is arranged on the lifting frame 25 for realizing the transverse fixation and vertical support of the outer tube 102.

[0047] Base seats 11 and outer tube support seats 12 are arranged on the front and rear sidewalls of the welding station 1. Those skilled in the art can use insulating wood or a material with high temperature resistance and low hardness to make the outer tube support seat 12 to avoid frictional damage to the outer tube 102. The support bracket 26 described in the previous or subsequent text uses the same material.

[0048] In this technical solution, the welding station 1 is designed into a front section and a rear section. In this embodiment, there are eight bases 11 on the welding station 1. The first four bases 11 are used as the front section to form a positioning area. A positioning frame is arranged at the front end of the welding station 11. The positioning frame includes a horizontal support plate 13 and a longitudinal baffle 14. Long strip holes are arranged on the horizontal support plate 13, and the longitudinal baffle 14 is locked and fixed through the long strip holes. The outer tube 102 is positioned and blocked through the longitudinal baffle 14. In this embodiment, the last four bases 11 on the welding station 1 are used as the rear section, and the rear section here is used for welding the tail pipe 101. A annealing station 3 is arranged at the rear side of the welding station 1. In this embodiment, the two sets of lifting frames 25 on the transfer trolley 2 can move between the front section and the rear section of the welding station 1 and the annealing station 3, so as to position the outer diameter tube 102 on this equipment, weld the tail pipe and anneal it.

[0049] For the rear section of the welding station 1, as Figure 5 shown, a positioning combustion rack 8 is correspondingly arranged on the welding station 1. A longitudinal movement track 81 is arranged on the positioning combustion rack 8. A longitudinal movement frame 82 is arranged on the longitudinal movement track 81. A number of support columns 83 are erected on the longitudinal movement frame 82. A support piece 84 is arranged at the top of each support column 83. The vertical combustion nozzle 85 is erected through the support piece 84. The longitudinal movement frame 82 is also connected with a longitudinal combustion driving device. Here, the longitudinal combustion driving device can be a cylinder, or an oil cylinder or a hydraulic motor. In this embodiment, a longitudinal combustion driving cylinder 86 with a cylinder structure is adopted. Through the above structural settings, the longitudinal movement of the vertical combustion nozzle 85 after the work is completed can be realized. Cooperating with the positioning combustion rack 8, as Figure 2 shown, this device is also correspondingly provided with a positioning hole-piercing rack 4. A telescopic guide block 42 is arranged at the top of the positioning hole-piercing rack 4. The telescopic guide rod 43 is guided and constrained through the telescopic guide block 42. The telescopic guide rod 43 is fixed on the telescopic frame 44. The middle of the telescopic frame 44 is connected with a telescopic driving cylinder 41. The telescopic frame 44 can move longitudinally under the drive of the telescopic driving cylinder 41. Four extension air pipes 45 are fixed at the top of the telescopic frame 44. A high-pressure nozzle 46 is arranged at the bottom of each extension air pipe 45; a gas connection part 47 is fixed at the tail end of each extension air pipe 45 and is connected with external gas. A valve 48 is fixed on the gas connection part 47 to control high-pressure air intake. Through the combined use of the positioning combustion rack 8 and the positioning hole-piercing rack 4, the fixed-point hole-blowing of the outer tube 102 is realized.

[0050] This device is correspondingly provided with a welding frame 9 at the welding station 1. A turntable driving motor 91, a gearbox and a turntable 92 are arranged at the top of the welding frame 9. The turntable driving motor 91 and the gearbox are combined and used as a turntable driving device; a vertical rod 95 is fixed on the top of the turntable 92, and a support disk 96 is arranged at the top of the vertical rod 95. Multiple nozzle fixing seats 97 are fixed through the support disk 96. An inclined fixing seat 971 is arranged on the nozzle fixing seat 97, and a welding nozzle 972 is fixed on the inclined fixing seat 971. When multiple welding nozzles 972 are provided, the flame spraying ends of the multiple welding nozzles 972 are concentratedly arranged towards the joint point of the tail pipe 101 and the outer layer pipe 102, and the joint point of the tail pipe 101 and the outer layer pipe 102 can be uniformly heated through synchronous heating in multiple directions, avoiding pipe explosion caused by uneven local heating. An igniter 98 is arranged in cooperation with the multiple welding nozzles 972 for ignition control.

[0051] Through this kind of structural arrangement, the synchronous rotation of the turntable 92 together with the vertical rod 95 and the support disk 96 can be realized. An outer frame 93 is further arranged on the periphery of the turntable 92. Multiple sensor fixing positions 931 are arranged through the outer frame 93. A sensor induction seat 94 is arranged on the turntable 92 and cooperates with multiple sensors. When this device is connected to an external control system, the control of the rotation amount or the rotation position can be realized through the sensors.

[0052] As Figure 4 、 10 shown, a tail pipe feeding table 7 is arranged on the side of the welding frame 9. A tail pipe longitudinal movement track and a tail pipe longitudinal movement driving device are arranged on the tail pipe feeding table 7. In this embodiment, the tail pipe longitudinal movement driving device selects a tail pipe longitudinal movement driving motor 72. A feeding lead screw 71 is further arranged in cooperation with the tail pipe longitudinal movement track. A vertical frame 73 is arranged on the tail pipe longitudinal movement track. Through the above structural arrangement, the stable longitudinal movement of the vertical frame 73 can be realized. As an equivalent embodiment, those skilled in the art can also replace the tail pipe longitudinal movement driving motor 72 with a driving cylinder, and the longitudinal movement of the vertical frame 73 can be pushed through the driving rod on the driving cylinder to achieve basically the same technical effect.

[0053] A driving motor is provided on the vertical frame 73 as a vertical lifting driving device. A driving wheel 74 is provided at the top of the driving motor, which is connected to a driven wheel 75 by a belt. A vertical lead screw is connected to the bottom of the driven wheel 75. The turning cylinder 76 is vertically driven by the vertical lead screw. An extension rod 77 is provided on the turning cylinder 76. A clamping driving cylinder 6 is fixed on the extension rod 77. A clamping arm 61 is provided on the clamping driving cylinder 6. A clamping block 62 is fixed to the bottom of the clamping arm 61. The clamping of the tail pipe 101 is realized by the cooperation of two clamping blocks 62. The above structure can realize the clamping, longitudinal pipe feeding, turning of the tail pipe 101 and insert the tail pipe into the outer pipe 102. More importantly, the device can also immediately pull the tail pipe 101 outwards after the tail pipe 101 is welded, avoiding the collapse of the welding point of the tail pipe 101, which cannot be realized in manual welding due to high temperature.

[0054] A tail pipe placement table 5 is provided in cooperation with the clamping arm 61. A number of tail pipe fixing holes 51 are evenly arranged on the tail pipe placement table 5; the tail pipe placement table 5 is fixed on a placement table rotation driving motor 52. By driving the tail pipe placement table 5 to rotate in place, multiple tail pipe fixing holes 51 can be respectively corresponding to the clamping arm 61 to realize the one-by-one supply of the tail pipe 101.

[0055] In this embodiment, an outer driving chain 311 and an inner driving chain 322 are provided on the annealing station 3. A number of self-rotating wheels 33 are provided on the outer driving chain 311 to realize circular movement. The inner driving chain 322 is provided in cooperation with the self-rotating wheel 33 to drive the self-rotation of the self-rotating wheel 33; more specifically, double-row driving wheels 38 and an outer driving motor 31 are provided on the front and rear side walls of the annealing station 3. The outer driving chain 311 on the front and rear side walls is driven by the double-row driving wheels 38. The self-rotating wheels 33 are respectively fixed on the outer driving chain 311 and move horizontally with the outer driving chain 311.

[0056] In this technical solution, the self-rotating wheel includes a rubber wheel 331 and a synchronous gear 332. The synchronous gear 332 meshes with the inner driving chain 322 to realize self-rotation drive. The inner driving chain 322 is connected to the inner driving motor 32 through an inner linkage shaft 321. Through the above structural settings, the outer pipe 102 together with the tail pipe 101 can be driven to move horizontally and rotate self.

[0057] A horizontal extension rod 34 is also provided on the front side of the annealing station. A number of vertical plates 35 are provided on the horizontal extension rod 34. A sleeve 36 is provided at the top of each vertical plate 35. An annealing nozzle 37 is locked in the sleeve 36. In this embodiment, two vertical plates 35 are provided on each horizontal extension rod 34. The two annealing nozzles 37 are arranged oppositely to anneal the joint point of the tail pipe 101 intensively. Embodiment

[0058] When the side-tail pipe welding device for the solar double-pass pipe is in use, first place the four outer pipes 102 on the four outer pipe support seats 12 at the front section of the welding station 1. When placing, end positioning needs to be carried out through the longitudinal baffle 14. After positioning, the lifting frame drive motor 20 on the shifting trolley 2 starts, driving the support tray 26 to vertically lift and support the outer pipe 102. Then the entire shifting trolley 2 moves horizontally, shifting and aligning the support tray 26 to the four outer pipe support seats 12 at the rear section of the welding station 1. The lifting frame drive motor 20 on the shifting trolley 2 starts, driving the support tray 26 to vertically lower the four outer pipes 102 and place them on the four outer pipe support seats 12 at the rear section of the welding station 1. After the above operations are completed, the shifting trolley 2 retracts and continues to place the outer pipes 102.

[0059] The positioning combustion frame 8 works: The longitudinal combustion drive cylinder 86 pushes the longitudinal movement frame 82 together with the vertical combustion nozzle 85 above to move forward to the tail pipe 101 insertion point and ignite to burn the outer pipe 102. After high-temperature treatment, at this time, the outer pipe 102 is locally softened. The longitudinal combustion drive cylinder 86 pushes the longitudinal movement frame 82 together with the vertical combustion nozzle 85 above to move backward, leaving the tail pipe 101 insertion point.

[0060] The positioning hole-punching frame 4 works: The telescopic drive cylinder 41 connected to the middle of the telescopic frame 44 applies force. Driven by the telescopic drive cylinder 41, the telescopic frame 44 together with the four extension air pipes 45 and the high-pressure nozzles 46 can move backward synchronously to the tail pipe 101 insertion point. The gas connection part 47 is connected to external high-pressure gas, and the valve 48 controls to achieve pulsed high pressure. Through the instantaneous pulsed high pressure, the softened area of the outer pipe 102 is punched, and holes for inserting the tail pipe 101 appear in this area. The telescopic drive cylinder 41 drives the telescopic frame 44 together with the four extension air pipes 45 and the high-pressure nozzles 46 to move forward synchronously and leave the tail pipe 101 insertion point.

[0061] The positioning hole-punching frame 4 works: The telescopic drive cylinder 41 connected to the middle of the telescopic frame 44 applies force. Driven by the telescopic drive cylinder 41, the telescopic frame 44 together with the four extension air pipes 45 and the high-pressure nozzles 46 can move backward synchronously to the tail pipe 101 insertion point. The gas connection part 47 is connected to external high-pressure gas, and the valve 48 controls to achieve pulsed high pressure. Through the instantaneous pulsed high pressure, the softened area of the outer pipe 102 is punched, and holes for inserting the tail pipe 101 appear in this area. The telescopic drive cylinder 41 drives the telescopic frame 44 together with the four extension air pipes 45 and the high-pressure nozzles 46 to move forward synchronously and leave the tail pipe 101 insertion point.

[0062] The tail pipe feeding table 7 and the tail pipe placement table 5 work: The tail pipe placement table 5 rotates to ensure that the tail pipe fixing hole 51 with the tail pipe faces the clamping drive cylinder 6; the tail pipe longitudinal movement drive motor 72 drives the feeding lead screw 71 to rotate, driving the vertical frame 73 to move longitudinally stably; a drive motor is arranged on the vertical frame 73 as the vertical lifting drive device, and the drive motor here is connected with a vertical lead screw. The flipping cylinder 76 is lifted vertically through the vertical lead screw. The clamping drive cylinder 6 is fixed on the flipping cylinder 76. The clamping drive cylinder 6 is provided with a clamping arm 61 and a clamping block 62. The clamping block 62 clamps and lifts the tail pipe 101. When longitudinally feeding the pipe, the clamping block 62 flips and inserts the tail pipe into the outer pipe 102. Wait for the components on the welding frame 9 to be heated at high temperature to achieve their fusion; this device can also gently pull the tail pipe outward immediately after the tail pipe 101 is welded to avoid the collapse of the welding point of the tail pipe 101.

[0063] The welding frame 9 works: The turntable drive motor 91 drives the turntable 92 to rotate, and the vertical rods 95, support disks 96, nozzle fixing seats 97, inclined fixing seats 971, and welding nozzles 972 on the turntable rotate synchronously. The flame spraying ends of multiple welding nozzles 972 are concentrated towards the joint point of the tail pipe 101 and the outer pipe 102, and the joint point of the tail pipe 101 and the outer pipe 102 can be uniformly heated by synchronous heating in multiple directions. It should be noted that when the clamping block 62 moves longitudinally, the turntable 92 also needs to rotate to avoid it. After this device is connected to an external control system, the rotation amount or rotation position can be controlled through sensors.

[0064] After the welding work is completed, the lifting frame drive motor 20 on the shifting trolley 2 starts, driving the support bracket 26 to lift the outer pipe 102 vertically and place the four outer pipes 102 on the self-rotating wheels 33 on the annealing station 3.

[0065] The annealing station 3 works: The outer drive chain 311 drives several groups of self-rotating wheels 33 to move in a circular motion, and multiple groups of annealing nozzles 37 are arranged on the front side of the annealing station. The outer drive chain 311 drives several groups of self-rotating wheels 33 to reach the corresponding annealing nozzles 37, and the outer drive chain 311 stops running; the inner drive chain 322 drives the self-rotating wheels 33 to rotate while the annealing nozzles 37 fire and perform annealing baking.

[0066] In summary, the structure of the present invention is novel in design. It can realize steps such as the positioning, hole making, tail pipe 101 insertion, welding, and shifting annealing of the outer pipe 102. The whole process runs automatically and can complete precise insertion and the pulling of the tail pipe after welding. It has high efficiency and high precision, overcomes various drawbacks in the prior art, and is an ideal solar double-pass pipe side wall tail pipe welding device.

Claims

1. A welding device for the sidewall tail pipe of a solar double-pass tube, characterized in that: It includes a welding station and an annealing station. A transverse movement track and a shifting trolley are arranged between the welding station and the annealing station. A lifting frame is arranged on the shifting trolley, and a supporting bracket is arranged on the lifting frame to realize the transverse movement and vertical support of the outer pipe. A transverse movement driving component and a self-rotation driving component are arranged on the annealing station. A number of self-rotation wheels are arranged on the self-rotation driving component and cooperate with the outer driving chain in the transverse movement driving component to realize movement. An inner driving chain is arranged in cooperation with the self-rotation wheels to drive the self-rotation of the self-rotation wheels. An annealing spray head is arranged on the annealing station. A positioning combustion rack is correspondingly arranged on the welding station. A longitudinal movement track is arranged on the positioning combustion rack, a longitudinal movement frame is arranged on the longitudinal movement track, and a number of vertical combustion spray heads are arranged on the longitudinal movement frame. A longitudinal combustion driving device is arranged in cooperation with the longitudinal movement frame. A positioning hole-piercing rack is correspondingly arranged on the welding station. A telescopic driving part and a telescopic frame are arranged on the positioning hole-piercing rack through a guiding part, and a number of high-pressure nozzles are arranged on the telescopic frame. A welding rack is correspondingly arranged on the welding station. A turntable driving motor, a gearbox and a turntable are arranged on the top of the welding rack. A vertical rod is fixed on the top of the turntable, and a supporting disc is arranged on the top of the vertical rod. The fixing of a number of nozzle fixing seats is realized through the supporting disc. An inclined fixing seat is arranged on the nozzle fixing seat, and a number of welding nozzles are fixed on the inclined fixing seat. A tail pipe feeding table is arranged on the side of the welding rack. A tail pipe longitudinal movement track and a tail pipe longitudinal movement driving device are arranged on the tail pipe feeding table. A vertical frame is arranged on the tail pipe longitudinal movement track. A vertical lifting driving device is arranged on the vertical frame. A flipping cylinder is arranged on the lifting driving device. A clamping cylinder is fixed on the flipping cylinder, and a clamping arm is arranged on the clamping cylinder to realize the clamping of the tail pipe. A tail pipe placing table is arranged in cooperation with the clamping arm. A number of tail pipe fixing holes are evenly arranged on the tail pipe placing table. The tail pipe placing table is fixed on a placing table rotation driving device, and the supply of the tail pipe can be realized by driving the tail pipe placing table so that a number of tail pipe fixing holes respectively correspond to the clamping arms.

2. The side wall tail pipe welding device of a solar double-pass tube according to claim 1, characterized in that: A positioning rack is also arranged on the welding station. The positioning rack is arranged at the front end or the rear end of the welding station. The positioning rack includes a horizontal support plate and a longitudinal baffle, and the positioning of the outer pipe is realized through the longitudinal baffle.

3. A welding device for the sidewall tail pipe of a solar double-pass tube according to claim 1, characterized in that: The transverse movement driving component arranged on the annealing station includes an outer driving motor and double-row driving wheels on the front and rear side walls. The driving of the front and rear outer driving chains is realized through the double-row driving wheels. The self-rotation wheels are respectively fixed on the outer driving chains and move transversely along with the outer driving chains.

4. A solar double-pass tube sidewall tail tube welding device according to claim 1, characterized in that: The self-rotation wheel includes a rubber wheel and a synchronous gear. The synchronous gear meshes with the inner driving chain to realize self-rotation driving, and the inner driving chain is connected with an inner driving motor.

5. A welding device for the side wall tail pipe of a solar double-pass pipe according to claim 1, characterized in that: A horizontally extending rod is also arranged on the annealing station. A number of vertical plates are arranged on the horizontally extending rod, and a sleeve is arranged at the top of each vertical plate. The annealing spray head is arranged in the sleeve.

6. The solar double-pass tube sidewall tail tube welding device according to claim 1, characterized in that: A sensor fixing position is arranged on the periphery of the turntable, and a sensor induction seat is arranged on the turntable to cooperate with the sensor.

7. A solar double-pass tube sidewall tail tube welding device according to claim 1, characterized in that: The flame-spraying ends of the multiple welding nozzles are arranged towards the joint point of the tail pipe and the outer layer pipe, and the joint point of the tail pipe and the outer layer pipe is uniformly heated in multiple directions, avoiding pipe explosion caused by uneven heating.

Images