PVC power pipe welding device

Abstract

The present application relates to PVC power pipe processing technical field, especially to a kind of PVC power pipe welding device.It includes heating air supply box;Heating air supply box includes heat insulation sleeve;Heat insulation sleeve two sides are respectively provided with support seat, inside is provided with driving element and hot melt frame.Each group of support seat and heat insulation sleeve between setting support rod, lead screw one and sliding block;Sliding block is slidably arranged on support rod, and is threadedly connected with lead screw one.Support seat and sliding block are all provided with positioning element, wherein the positioning element on support seat is slidable.Both sides of hot melt frame are provided with hot melt plate, and upper end is provided with air supply piece, and lower end is provided with lifting seat.Air supply piece is provided with two groups of air supply end, one group is upward, and one group is downward.The present application is heated by double sides synchronously, guarantees the temperature consistency of the fusion end of two groups of PVC power pipes.Heating air supply box is set to air supply upward and downward, realizes hot melt plate rapid cooling and fusion zone rapid setting, so that fusion is safer and more efficient.Setting flexible two-point fixing, improve the accuracy and convenience of fusion.

Description

Technical Field

[0001] This invention relates to the field of PVC power pipe processing technology, and in particular to a PVC power pipe welding device. Background Technology

[0002] PVC electrical conduit is a product that undergoes hot-dip plastic coating or epoxy resin coating both internally and externally. It has excellent corrosion resistance and is used to protect circuits from damage. Typically, during the processing of PVC electrical conduit, a heat melter is used to heat and melt the conduit before connecting it.

[0003] Chinese patent document CN 218139958 U discloses a PVC power pipe welding device, belonging to the field of pipe welding technology. It includes a distribution box, a mounting shell fixed on one side of the distribution box, a mounting plate fixed on one side of the mounting shell, multiple heating plates movably arranged on one side of the mounting plate, electric heating tubes fixed inside the heating plates, multiple connecting blocks fixed on the surface of the mounting plate, baffles fixed on the surface of the connecting blocks, a shrinkage mechanism for adjusting the position between the multiple heating plates installed inside the mounting shell, and a fixing rod fixed on the surface of the mounting plate.

[0004] The aforementioned PVC conduit welding device can only heat one set of PVC conduits. When welding two sets of PVC conduits, they need to be heated separately, and then the welding position needs to be fixed and the pipe level adjusted. Therefore, it cannot guarantee that the welding ends of the two sets of PVC conduits are at the same temperature and aligned, affecting the welding effect. In addition, the temperature of the heated end and the welding area is relatively high after welding, posing certain safety hazards. How to quickly cool down and shape the welding area are also issues that need to be considered in the welding process. Summary of the Invention

[0005] To address the problems existing in the background technology, a PVC power pipe welding device is proposed. This invention ensures consistent temperature at the welding ends of the two sets of PVC power pipes through double-sided synchronous heating. A heating air supply box is installed, and air is supplied upwards and downwards by the air supply components to achieve rapid cooling of the hot melt plate and rapid shaping of the PVC power pipe welding area after welding, making the welding process safer and more efficient. The flexible two-point fixing design improves the accuracy and convenience of welding.

[0006] This invention proposes a PVC power pipe welding device, including a heating and air supply box; the heating and air supply box includes a heat insulation sleeve; support seats are respectively provided on both sides of the heat insulation sleeve, with an opening at the upper end, and a driving component and a hot melt frame that enters and exits the opening through the driving component are provided inside. A support rod, a lead screw, and a slider are provided between each set of support seats and the heat insulation sleeve; the slider is slidably mounted on the support rod and threadedly connected to the lead screw; one end of the lead screw is rotatably connected to the heat insulation sleeve, and the other end is rotatably connected to the support seat, with a handle at the end. Positioning components are provided on both the support seats and the slider, wherein the positioning components on the support seats are slidable. Hot melt plates are respectively provided on both sides of the hot melt frame, with an opening extending from the upper end and an air supply component provided thereon, and a lifting seat cooperating with the driving component at the lower end. The air supply component covers the opening and has two sets of air supply ends, one facing upwards and the other downwards.

[0007] Preferably, the air supply component includes an air outlet box; the air outlet box is set on the hot melt frame, with an air cavity inside, a fan on the side wall, an air outlet one at the upper end, and an air outlet two at the lower end; flow control valves are set on the air outlet one and the air outlet two.

[0008] Preferably, the second air outlet is located on both sides of the heat fusion frame and extends into the heat insulation sleeve when the air outlet box covers the opening.

[0009] Preferably, the heat insulation sleeve is provided with a vent; the vent is provided with a dustproof net.

[0010] Preferably, the driving component includes a motor, a second lead screw, and a rotating shaft; the motor is located outside the heat insulation sleeve, the main shaft extends into the heat insulation sleeve, and is keyed to a first gear; the second lead screw is rotatably located inside the heat insulation sleeve and is located on both sides of the heat fusion frame, with its upper end threadedly connected to the lifting seat and its lower end sleeved to the rotating shaft via a belt; the rotating shaft is rotatably located below the heat fusion frame, and a second gear is keyed to it; the second gear is keyed to the first gear.

[0011] Preferably, the positioning component includes a fixed frame and a movable frame; the fixed frame is disposed on the support base and the slider; the movable frame is disposed above the fixed frame, with one end rotatably connected to the fixed frame and the other end detachably connected to the fixed frame, forming a circular bayonet with the fixed frame.

[0012] Preferably, the detachable ends of the fixed frame and the movable frame are provided with screws; both ends of the screws pass through the fixed frame and the movable frame and then engage with nuts.

[0013] Preferably, a mounting groove is provided on the wall of the bayonet; a removable arc-shaped anti-slip pad is provided inside the mounting groove.

[0014] Preferably, a sliding groove is provided on the support base; the fixing frame is slidably connected to the support base through the sliding groove.

[0015] The present invention further provides a method for operating the PVC power pipe welding device described above, the steps of which are as follows:

[0016] S1. Select and install appropriate arc-shaped anti-slip pads according to the size of the PVC power pipe to be welded;

[0017] S2. Insert the two sets of PVC power pipe welding ends into the slots of the positioning parts on the sliders on both sides, and tighten the nuts by using the screw and nut.

[0018] S3. Raise the hot melt rack so that the hot melt plate is aligned with the opening of the PVC power pipe;

[0019] S4. Rotate the handle, and the lead screw will rotate synchronously, driving the slider to move until the cut surfaces of the two sets of PVC power pipes are attached to the hot melt plate.

[0020] S5. The positioning component on the support base fixes the two sets of PVC power pipes at the second point, so that the pipe openings of the two sets of PVC power pipes are opposite and horizontal; at this time, the bottom of the positioning component is located in the groove and close to the hot melt plate.

[0021] S6. Start the hot melt plate to heat the welding ends of the two sets of PVC power pipes;

[0022] S7. After heating is complete, turn the handle in the opposite direction. The positioning part on the slider moves synchronously, and the positioning part on the support slides at the same time, causing the two sets of PVC power pipes to move horizontally to separate a distance.

[0023] S8. The heat fusion frame descends, and the heat insulation sleeve is retracted;

[0024] S9. Reset the two sets of PVC power pipes, align the pipe ends, and begin welding.

[0025] S10. When the air supply component is working, the fan sends air into the air cavity. The air first flows out from the second air outlet and delivers air to the hot melt plate inside the heat insulation sleeve to accelerate cooling. Then the air flows out from the first air outlet and delivers air to the welding area of ​​the PVC power pipe to accelerate shaping.

[0026] S11. After welding is complete, open all the positioning parts and remove the welded PVC power pipe.

[0027] Compared with the prior art, the present invention has the following beneficial technical effects:

[0028] I. The present invention uses an automatic lifting and lowering hot melt rack 15, which facilitates storage and reduces safety hazards. On the other hand, it enables synchronous double-sided heating to ensure that the welding ends of the two sets of PVC power pipes are at the same temperature, so as to achieve a better welding effect.

[0029] Second, this invention features a heating air supply box. On one hand, by adjusting the lifting and lowering of the hot melt plate, it can flexibly enter and exit the heat insulation sleeve, facilitating the storage of the hot melt plate, reducing safety hazards caused by high temperatures, and preventing the hot melt plate from being contaminated or damaged. On the other hand, by supplying air upwards and downwards through the air supply components, the hot melt plate is rapidly cooled after welding, and the PVC power pipe welding area is quickly shaped, making the welding process safer and more efficient.

[0030] Third, this invention features a sliding positioning component on the support base and a fixed positioning component on the slider, while the slider itself can move horizontally. This achieves two-point fixation of the PVC power pipe, ensuring a secure fixation. Furthermore, after the two points are fixed, adjusting the slider position allows the positioning component on the support base to still move within a certain range without loosening at the fixed end. This facilitates adjusting the distance between the two sets of PVC power pipe openings during the welding process without altering the horizontal alignment, thus improving the accuracy and convenience of the welding process. Attached Figure Description

[0031] Figure 1 This is a structural schematic diagram of one embodiment of the present invention;

[0032] Figure 2 This is a schematic diagram of the structure of a second embodiment of the present invention;

[0033] Figure 3 This is a cross-sectional view of the box body in one embodiment of the present invention;

[0034] Figure 4 This is a partial structural schematic diagram of the air supply component in one embodiment of the present invention;

[0035] Figure 5 for Figure 3 Enlarged view of point A in the middle;

[0036] Figure 6 This is a schematic diagram of the positioning element in one embodiment of the present invention.

[0037] Reference numerals in the attached diagram: 1. Heated air supply box; 2. Support base; 3. Support rod; 4. Slider; 5. Positioning component; 6. Lead screw one; 7. Handle; 8. Heat insulation sleeve; 9. Lifting seat; 10. Hot melt plate; 11. Air outlet box; 12. Fan; 13. Air outlet one; 14. Air outlet two; 15. Hot melt frame; 16. Lead screw two; 17. Rotating shaft; 18. Belt; 19. Gear two; 20. Gear one; 21. Fixed frame; 22. Movable frame; 23. Mounting groove; 24. Arc-shaped anti-slip pad; 25. Screw; 26. Screw rod; 27. Air supply component; 28. Ventilation opening. Detailed Implementation

[0038] Example 1

[0039] like Figure 1-3As shown, the present invention proposes a PVC power pipe welding device, including a heating air supply box 1; the heating air supply box 1 includes a heat insulation sleeve 8; support seats 2 are respectively provided on both sides of the heat insulation sleeve 8, with an opening at the upper end, and a driving component and a hot melt frame 15 that enters and exits the opening through the driving component are provided inside. A support rod 3, a lead screw 6, and a slider 4 are provided between each set of support seats 2 and heat insulation sleeve 8; the slider 4 is slidably mounted on the support rod 3 and threadedly connected to the lead screw 6; one end of the lead screw 6 is rotatably connected to the heat insulation sleeve 8, and the other end is rotatably connected to the support seat 2, and a handle 7 is provided at the end. Positioning components 5 are provided on both the support seats 2 and the slider 4, wherein the positioning component 5 on the support seat 2 is slidable. Hot melt plates 10 are respectively provided on both sides of the hot melt frame 15, with an opening extending from the upper end and an air supply component 27 provided, and a lifting seat 9 cooperating with the driving component is provided at the lower end. The air supply component 27 covers the opening and is provided with two sets of air supply ends, one facing upwards and the other facing downwards.

[0040] In this embodiment, a heating air supply box 1 is provided. On the one hand, by adjusting the height of the hot melt plate 10, it can flexibly enter and exit the heat insulation sleeve 8, facilitating the storage of the hot melt plate 10, reducing safety hazards caused by high temperatures, and preventing the hot melt plate 10 from being contaminated or damaged. On the other hand, by supplying air upwards and downwards through the air supply component 27, the hot melt plate 10 is rapidly cooled after welding, and the PVC power pipe welding area is quickly shaped. This makes the welding process safer and more efficient.

[0041] In this embodiment, the positioning element 5 on the support base 2 is slidable, while the positioning element 5 on the slider 4 is fixed. The slider 4 can move horizontally, which achieves two-point fixation of the PVC power pipe, ensuring a secure fixation. Furthermore, after the two-point fixation is completed, adjusting the position of the slider 4 allows the positioning element 5 on the support base 2 to still move within a certain range without loosening at the fixed end. This facilitates adjusting the distance between the two sets of PVC power pipe openings during the welding process without altering the horizontality, improving the accuracy and convenience of the welding process.

[0042] Example 2

[0043] like Figure 1-3As shown, the present invention proposes a PVC power pipe welding device, including a heating air supply box 1; the heating air supply box 1 includes a heat insulation sleeve 8; support seats 2 are respectively provided on both sides of the heat insulation sleeve 8, with an opening at the upper end, and a driving component and a hot melt frame 15 that enters and exits the opening through the driving component are provided inside. A support rod 3, a lead screw 6, and a slider 4 are provided between each set of support seats 2 and heat insulation sleeve 8; the slider 4 is slidably mounted on the support rod 3 and threadedly connected to the lead screw 6; one end of the lead screw 6 is rotatably connected to the heat insulation sleeve 8, and the other end is rotatably connected to the support seat 2, and a handle 7 is provided at the end. Positioning components 5 are provided on both the support seats 2 and the slider 4, wherein the positioning component 5 on the support seat 2 is slidable. Hot melt plates 10 are respectively provided on both sides of the hot melt frame 15, with an opening extending from the upper end and an air supply component 27 provided, and a lifting seat 9 cooperating with the driving component is provided at the lower end. The air supply component 27 covers the opening and is provided with two sets of air supply ends, one facing upwards and the other facing downwards.

[0044] like Figure 4 As shown, the air supply component 27 includes an air outlet box 11; the air outlet box 11 is set on the hot melt frame 15, with an air cavity inside, a fan 12 on the side wall, an air outlet 13 at the upper end, and an air outlet 14 at the lower end; flow control valves are set on the air outlet 13 and the air outlet 14.

[0045] It should be further explained that the second air outlet 14 is located on both sides of the heat fusion frame 15, and extends into the heat insulation sleeve 8 when the air outlet box 11 covers the opening.

[0046] It should be further explained that a vent 28 is provided on the heat insulation sleeve 8; a dustproof net is provided on the vent 28 to accelerate the outflow of hot air inside the heat insulation sleeve 8.

[0047] This embodiment sets the specific structure of the air supply component 27. During operation, air is supplied by the fan 12 and diverted through the air cavity. The flow control valve controls the air outlet position. When it is necessary to cool down the high-temperature hot melt plate 10, air is discharged from the second air outlet 14. When it is necessary to shape the PVC power pipe welding area, air is discharged from the first air outlet 13.

[0048] Example 3

[0049] like Figure 1-3As shown, the present invention proposes a PVC power pipe welding device, including a heating air supply box 1; the heating air supply box 1 includes a heat insulation sleeve 8; support seats 2 are respectively provided on both sides of the heat insulation sleeve 8, with an opening at the upper end, and a driving component and a hot melt frame 15 that enters and exits the opening through the driving component are provided inside. A support rod 3, a lead screw 6, and a slider 4 are provided between each set of support seats 2 and heat insulation sleeve 8; the slider 4 is slidably mounted on the support rod 3 and threadedly connected to the lead screw 6; one end of the lead screw 6 is rotatably connected to the heat insulation sleeve 8, and the other end is rotatably connected to the support seat 2, and a handle 7 is provided at the end. Positioning components 5 are provided on both the support seats 2 and the slider 4, wherein the positioning component 5 on the support seat 2 is slidable. Hot melt plates 10 are respectively provided on both sides of the hot melt frame 15, with an opening extending from the upper end and an air supply component 27 provided, and a lifting seat 9 cooperating with the driving component is provided at the lower end. The air supply component 27 covers the opening and is provided with two sets of air supply ends, one facing upwards and the other facing downwards.

[0050] like Figure 5 As shown, the driving component includes a motor, a second lead screw 16, and a rotating shaft 17; the motor is located outside the heat insulation sleeve 8, and the main shaft extends into the heat insulation sleeve 8 and is keyed to a first gear 20; the second lead screw 16 is rotatably located inside the heat insulation sleeve 8 and is located on both sides of the heat fusion frame 15, with its upper end threadedly connected to the lifting seat 9 and its lower end sleeved to the rotating shaft 17 via a belt 18; the rotating shaft 17 is rotatably located below the heat fusion frame 15, and a second gear 19 is keyed to it; the second gear 19 is keyed to the first gear 20.

[0051] In this embodiment, the specific structure of the driving component is configured such that a motor drives gear 20 to rotate, and gear 19 and belt 18 drive screw 16 to rotate. The lifting seat 9 is threadedly connected to screw 16, causing the heat fusion frame 15 to move up and down. The motor is located outside the heat insulation sleeve 8, controlling the automatic lifting and lowering of the heat fusion frame 15, allowing the heat insulation sleeve 8 to house the heat fusion frame 15 and improving the safety of the device.

[0052] Example 4

[0053] like Figure 1-3As shown, the present invention proposes a PVC power pipe welding device, including a heating air supply box 1; the heating air supply box 1 includes a heat insulation sleeve 8; support seats 2 are respectively provided on both sides of the heat insulation sleeve 8, with an opening at the upper end, and a driving component and a hot melt frame 15 that enters and exits the opening through the driving component are provided inside. A support rod 3, a lead screw 6, and a slider 4 are provided between each set of support seats 2 and heat insulation sleeve 8; the slider 4 is slidably mounted on the support rod 3 and threadedly connected to the lead screw 6; one end of the lead screw 6 is rotatably connected to the heat insulation sleeve 8, and the other end is rotatably connected to the support seat 2, and a handle 7 is provided at the end. Positioning components 5 are provided on both the support seats 2 and the slider 4, wherein the positioning component 5 on the support seat 2 is slidable. Hot melt plates 10 are respectively provided on both sides of the hot melt frame 15, with an opening extending from the upper end and an air supply component 27 provided, and a lifting seat 9 cooperating with the driving component is provided at the lower end. The air supply component 27 covers the opening and is provided with two sets of air supply ends, one facing upwards and the other facing downwards.

[0054] like Figure 6 As shown, the positioning component 5 includes a fixed frame 21 and a movable frame 22; the fixed frame 21 is mounted on the support base 2 and the slider 4; the movable frame 22 is mounted above the fixed frame 21, with one end rotatably connected to the fixed frame 21 and the other end detachably connected to the fixed frame 21, forming a circular bayonet with the fixed frame 21.

[0055] It should be further explained that the detachable ends of the fixed frame 21 and the movable frame 22 are provided with screws 26; both ends of the screws 26 pass through the fixed frame 21 and the movable frame 22 and then engage with nuts.

[0056] It should be further explained that an installation groove 23 is provided on the wall of the bayonet; a removable arc-shaped anti-slip pad 24 is provided inside the installation groove 23. The appropriate arc-shaped anti-slip pad 24 can be selected for installation according to the size of the PVC power pipe to be welded, and screws 25 are used for fixing during installation.

[0057] It should be further explained that a sliding groove is provided on the support base 2; the fixing frame 21 is slidably connected to the support base 2 through the sliding groove.

[0058] In this embodiment, the specific structure of the positioning component 5 is set, and the specific fixing method is as follows: Open the movable frame 22, place the PVC power pipe on the fixed frame 21, and let both ends of the screw 26 pass through the fixed frame 21 and the movable frame 22, and then cooperate with the nut to clamp the PVC power pipe.

[0059] Example 5

[0060] The present invention further provides a method for operating the PVC power pipe welding device described above, the steps of which are as follows:

[0061] S1. Select and install the appropriate arc-shaped anti-slip pad 24 according to the size of the PVC power pipe to be welded;

[0062] S2. Insert the two sets of PVC power pipe welding ends into the slots of the positioning parts 5 on the sliders 4 on both sides respectively, and tighten the nuts by cooperating with the screw 26 and the nut.

[0063] S3. Raise the hot melt frame 15 so that the hot melt plate 10 is aligned with the opening of the PVC power pipe;

[0064] S4. Rotate handle 7, and screw 6 rotate synchronously, driving slider 4 to move until the cut surfaces of the two sets of PVC power pipes are attached to hot melt plate 10.

[0065] S5. The positioning piece 5 on the support base 2 fixes the two sets of PVC power pipes at the second point, so that the pipe openings of the two sets of PVC power pipes are opposite and horizontal; at this time, the bottom of the positioning piece 5 is located in the groove and close to the hot melt plate 10.

[0066] S6. Start the hot melt plate 10 to heat the welding ends of the two sets of PVC power pipes;

[0067] S7. After heating is complete, rotate handle 7 in the opposite direction. The positioning piece 5 on slider 4 moves synchronously, and the positioning piece 5 on support 2 slides, causing the two sets of PVC power pipes to move to a distance apart.

[0068] S8, the hot melt frame 15 descends, and the heat insulation sleeve 8 is retracted;

[0069] S9. Reset the two sets of PVC power pipes, align the pipe ends, and begin welding.

[0070] S10, when the air supply component 27 is working, the fan 12 sends air to the air cavity. The air first flows out from the second air outlet 14 and sends air to the hot melt plate 10 inside the heat insulation sleeve 8 to accelerate cooling. Then the air flows out from the first air outlet 13 and sends air to the welding area of ​​the PVC power pipe to accelerate shaping.

[0071] S11. Welding complete. Open all positioning parts 5 and remove the welded PVC power pipe.

[0072] The PVC power pipe welding device of this invention has a simple and safe working method, and the welding is precise and efficient.

[0073] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A PVC electrical conduit fusion apparatus, characterized by, It includes a heating air supply box (1); the heating air supply box (1) includes a heat insulation sleeve (8); the heat insulation sleeve (8) is provided with support seats (2) on both sides, with an opening at the top, and a driving component and a heat fusion frame (15) that enters and exits the opening through the driving component are provided inside. A support rod (3), a lead screw (6), and a slider (4) are provided between each support base (2) and the heat insulation sleeve (8); the slider (4) is slidably mounted on the support rod (3) and threadedly connected to the lead screw (6); one end of the lead screw (6) is rotatably connected to the heat insulation sleeve (8), the other end is rotatably connected to the support base (2), and a handle (7) is provided at the end. Both the support base (2) and the slider (4) are provided with positioning parts (5); the positioning parts (5) on the support base (2) are slidable; Hot melt plates (10) are provided on both sides of the hot melt frame (15), an opening extends out at the upper end and an air supply component (27) is provided, and a lifting seat (9) that cooperates with the driving component is provided at the lower end. The air supply component (27) covers the opening and is provided with two sets of air supply ends, one facing upwards and the other facing downwards; the air supply component (27) includes an air outlet box (11); the air outlet box (11) is set on the heat fusion frame (15), with an air cavity inside, a fan (12) on the side wall, an air outlet one (13) at the upper end, and an air outlet two (14) at the lower end; the air outlet two (14) is set on both sides of the heat fusion frame (15), and extends into the heat insulation sleeve (8) when the air outlet box (11) covers the opening; flow control valves are provided on the air outlet one (13) and the air outlet two (14); The positioning component (5) includes a fixed frame (21) and a movable frame (22); the fixed frame (21) is set on the support base (2) and the slider (4); the movable frame (22) is set above the fixed frame (21), one end is rotatably connected to the fixed frame (21), and the other end is detachably connected to the fixed frame (21), forming a circular bayonet with the fixed frame (21); the detachable ends of the fixed frame (21) and the movable frame (22) are provided with screws (26); both ends of the screws (26) pass through the fixed frame (21) and the movable frame (22), and then cooperate with nuts; An installation groove (23) is provided on the wall of the bayonet; a removable arc-shaped anti-slip pad (24) is provided inside the installation groove (23); A sliding groove is provided on the support base (2); the fixing frame (21) is slidably connected to the support base (2) through the sliding groove.

2. The PVC power pipe welding device according to claim 1, characterized in that, Ventilation openings (28) are provided on the heat insulation sleeve (8); dustproof nets are provided on the ventilation openings (28).

3. The PVC power pipe welding device according to claim 1, characterized in that, The driving components include a motor, a second lead screw (16), and a rotating shaft (17); the motor is located outside the heat insulation sleeve (8), the main shaft extends into the heat insulation sleeve (8), and is keyed to a first gear (20); the second lead screw (16) is rotatably located inside the heat insulation sleeve (8) and is located on both sides of the heat fusion frame (15), the upper end is threaded to the lifting seat (9), and the lower end is sleeved to the rotating shaft (17) via a belt (18); the rotating shaft (17) is rotatably located below the heat fusion frame (15), and a second gear (19) is keyed to it; the second gear (19) is keyed to the first gear (20).

4. A method of operating the PVC power pipe welding device according to any one of claims 1-3, characterized in that, The steps are as follows: S1. Select and install the appropriate arc-shaped anti-slip pad (24) according to the size of the PVC power pipe to be welded; S2. Insert the two sets of PVC power pipe welding ends into the slots of the positioning parts (5) on the sliders (4) on both sides respectively, and tighten the nuts by using the screw (26) and nut. S3. Raise the hot melt rack (15) so that the hot melt plate (10) is opposite to the opening of the PVC power pipe; S4. Rotate the handle (7), and the lead screw (6) rotates synchronously, driving the slider (4) to move until the cut surfaces of the two sets of PVC power pipes are attached to the hot melt plate (10). S5. The positioning part (5) on the support base (2) fixes the two sets of PVC power pipes at the second point, so that the pipe openings of the two sets of PVC power pipes are opposite and horizontal; at this time, the bottom of the positioning part (5) is located in the groove and close to the hot melt plate (10). S6. Start the hot melt plate (10) to heat the welding ends of the two sets of PVC power pipes; S7. After heating is complete, rotate the handle (7) in the opposite direction. The positioning part (5) on the slider (4) moves synchronously, and the positioning part (5) on the support base (2) slides, causing the two sets of PVC power pipes to move to a distance apart. S8. The heat fusion frame (15) descends and the heat insulation sleeve (8) is retracted. S9. Reset the two sets of PVC power pipes, align the pipe ends, and begin welding. S10, when the air supply component (27) is working, the fan (12) sends air to the air cavity. The air first flows out from the second air outlet (14) and sends air to the hot melt plate (10) inside the heat insulation sleeve (8) to speed up the cooling. Then the air flows out from the first air outlet (13) and sends air to the welding area of ​​the PVC power pipe to speed up the shaping. S11. After welding is complete, open all the positioning parts (5) and remove the welded PVC power pipe.

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