Pipe orifice hot melting butt joint device of HDPE (High-Density Polyethylene) pipe

Abstract

The utility model discloses an HDPE pipe orifice hot melting butt joint device which comprises a base, a telescopic air cylinder is arranged above the base, and the telescopic air cylinder is connected with a movable plate. A first positioning assembly is arranged at the end, close to the telescopic air cylinder, of the base, and a second positioning assembly is arranged above the movable plate. A hot air gun is arranged on one side of the second positioning assembly and located between the first positioning assembly and the second positioning assembly. According to the utility model, through the automatic expansion and contraction of the telescopic cylinder, the automatic butt joint of the pipe orifice of the HDPE pipe is realized, the error caused by manual operation is avoided, the butt joint accuracy and stability are greatly improved, and the error quantity is reduced; through automatic and precise design, the butt joint efficiency and quality of the HDPE pipes are remarkably improved, the error quantity in the butt joint process is reduced, the qualification rate of electric hot melting is increased, and a powerful guarantee is provided for safe and stable operation of a pipeline system.

Description

Technical Field

[0001] The utility model relates to the technical field of hot melt butt welding of pipelines, and particularly relates to a hot melt butt welding device for the pipe orifice of an HDPE pipe. Background Technique

[0002] The HDPE pipe is a thermoplastic polyolefin pipe copolymerized from ethylene. Its raw material HDPE is a thermoplastic resin with high crystallinity and non-polarity. The HDPE pipe is a replacement product for traditional steel pipes and polyvinyl chloride drinking water pipes. It not only has good economy, but also has a series of advantages such as stable and reliable interfaces, impact resistance, crack resistance, aging resistance, and corrosion resistance of materials.

[0003] In the actual application of HDPE pipes, in order to ensure the continuity and sealing of the pipeline system, the hot melt butt welding technology has become an indispensable key link. This technology melts the end faces of two pipes through an electric heating method, and then quickly butts them to achieve a seamless connection. However, most of the current hot melt butt welding fixing devices on the market rely on manual operation, that is, relying on operators to manually push the pipes for hot melt butt welding. This operation method not only has low efficiency, but also is difficult to accurately control the position and force during the butt welding process, resulting in a large misalignment variable during the butt welding of the pipe orifices, and then causing the problem of unstable butt welding. In the long run, it not only affects the overall installation quality of HDPE pipes, but also significantly reduces the qualified rate of electrothermal melting at the pipe orifice interface. Summary of the Invention

[0004] The purpose of the utility model is to provide a hot melt butt welding device for the pipe orifice of an HDPE pipe to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A hot melt butt welding device for the pipe orifice of an HDPE pipe includes a base, and a telescopic cylinder is arranged above the base. The cylinder body of the telescopic cylinder is fixedly connected to the base through a fixing member. An active plate is arranged above the telescopic cylinder. A connecting block is arranged at the lower end of the active plate, and the connecting block is fixedly connected to the top end of the piston rod of the telescopic cylinder. A first positioning component is arranged at one end of the base close to the telescopic cylinder, and the first positioning component is arranged above the telescopic cylinder. A second positioning component is arranged above the active plate, and a support seat is arranged on one side of the second positioning component. A hot air gun is arranged at the upper end of the support seat, and the hot air gun is located between the first positioning component and the second positioning component. A first HDPE pipe is arranged on the first positioning component, a second HDPE pipe is arranged on the second positioning component, and the pipe orifices of the first HDPE pipe and the second HDPE pipe are arranged opposite to each other.

[0007] Preferably, the first positioning component includes a first fixed bracket, wherein an installation seat is provided at the upper end of the first fixed bracket; an activity groove is formed at the upper end of the installation seat, and a positive and negative thread screw rod is arranged in the activity groove; both ends of the positive and negative thread screw rod are movably connected to the installation seat respectively, and fixed clamping blocks are respectively arranged on the outer wall of the positive and negative thread screw rod, and an arc-shaped groove is formed at the clamping end of the fixed clamping block; a servo motor is arranged on the outer side of one end of the installation seat, and the output shaft of the servo motor penetrates through the installation seat and is connected to the positive and negative thread screw rod.

[0008] Preferably, the second positioning component includes a second fixed bracket, wherein a positioning groove is formed at the upper end of the second fixed bracket; a movable clamping arm is arranged above the positioning groove, and the movable clamping arm is of an arc-shaped structure and is movably connected to the second fixed bracket.

[0009] Preferably, one end of the second fixed bracket is hinged to the movable clamping arm through a pin shaft, a buckle lock is arranged at the other end of the second fixed bracket, and a lock tongue seat is arranged at one end of the movable clamping arm close to the buckle lock.

[0010] Preferably, an elastic extrusion head is arranged inside the positioning groove, and both sides of the elastic extrusion head are movably connected to the second fixed bracket respectively.

[0011] Preferably, a heat conduction block is arranged at the gun head of the hot air gun, an annular heating cavity is formed on one side of the heat conduction block, and the annular heating cavity is communicated with the air outlet of the hot air gun.

[0012] Preferably, support ears are symmetrically arranged at the upper end of the support seat, and pin holes are formed in the support ears; movable pins adapted to the pin holes are symmetrically arranged at the lower ends of both sides of the heat conduction block, and the movable pins are arranged in the pin holes and are rotatably connected thereto.

[0013] Preferably, guide shafts are symmetrically arranged on both sides of the telescopic cylinder, and both ends of the guide shafts are fixedly connected to the base through fixed seats; linear bearings adapted to the guide shafts are symmetrically arranged at the lower end of the movable plate, and the linear bearings are sleeved on the outer wall of the guide shafts and slide along the axial direction thereof.

[0014] Preferably, rollers are respectively arranged at the four corners of the bottom of the base, and shock-proof foot cups are arranged side by side on one side of the rollers.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: Through the automatic telescoping of the telescopic cylinder, the present utility model realizes the automatic docking of the HDPE pipe nozzle, avoiding the errors of manual operation, greatly improving the accuracy and stability of docking, and reducing the occurrence of misalignment; The first positioning component and the second positioning component respectively fix two HDPE pipes to be docked to ensure their stable positions during the docking process. Among them, the first positioning component uses a servo motor to drive a positive and negative thread screw rod, enabling the fixed clamping block to accurately adjust and clamp the HDPE pipe to meet the requirements of different pipe diameters; The second positioning component realizes fast and stable fixation through the cooperation of the movable clamping arm and the buckle lock, improving the operation efficiency; The design of the hot air gun in cooperation with the heat conduction block and the annular heating cavity ensures that heat is evenly and efficiently transferred to the HDPE pipe nozzle, promoting the rapid melting of the pipe nozzle and improving the docking quality; At the same time, the flexible connection design of the support seat and the heat conduction block enables the hot air gun to be finely adjusted according to different pipe diameters, increasing the versatility of the device; Through the automated and precise design, the efficiency and quality of HDPE pipe docking are significantly improved, the misalignment during the docking process is reduced, the qualification rate of electrofusion is increased, providing a strong guarantee for the safe and stable operation of the pipeline system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is a schematic structural diagram of the first positioning component of the present utility model;

[0018] Figure 3 is a schematic structural diagram of the second positioning component of the present utility model;

[0019] Figure 4 is a schematic structural diagram of the hot air gun of the present utility model;

[0020] Figure 5 is a schematic structural diagram of the connection between the movable plate and the base of the present utility model

[0021] Wherein: 1. Base; 2. Telescopic cylinder; 3. Movable plate; 4. First positioning component; 401. First fixed bracket; 402. Mounting seat; 403. Movable slot; 404. Positive and negative thread screw rod; 405. Fixed clamping block; 406. Arc-shaped slot; 407. Servo motor; 5. Second positioning component; 501. Second fixed bracket; 502. Positioning slot; 503. Movable clamping arm; 504. Buckle lock; 505. Lock tongue seat; 6. Support seat; 7. Hot air gun; 8. First HDPE pipe; 9. Second HDPE pipe; 10. Elastic extrusion head; 11. Heat conduction block; 12. Annular heating cavity; 13. Support ear; 14. Pin hole; 15. Movable pin; 16. Guide shaft; 17. Fixed seat; 18. Linear bearing; 19. Roller; 20. Shock-proof foot cup. Specific embodiments

[0022] The following further describes the present utility model in detail with reference to the accompanying drawings.

[0023] Please refer to Figures 1 to 5 , for achieving the above object, the present utility model provides the following technical solutions:

[0024] A hot melt butt joint device for the pipe orifice of an HDPE pipe, comprising a base 1, wherein a telescopic cylinder 2 is arranged above the base 1; the cylinder body of the telescopic cylinder 2 is fixedly connected with the base 1 through a fixing member, and a movable plate 3 is arranged above the telescopic cylinder 2; a connecting block is arranged at the lower end of the movable plate 3, and the connecting block is fixedly connected with the top end of the piston rod of the telescopic cylinder 2; a first positioning assembly 4 is arranged at one end of the base 1 close to the telescopic cylinder 2, and the first positioning assembly 4 is arranged above the telescopic cylinder 2; a second positioning assembly 5 is arranged above the movable plate 3, and a support seat 6 is arranged on one side of the second positioning assembly 5; a hot air gun 7 is arranged at the upper end of the support seat 6, and the hot air gun 7 is located between the first positioning assembly 4 and the second positioning assembly 5; a first HDPE pipe 8 is arranged on the first positioning assembly 4, and a second HDPE pipe 9 is arranged on the second positioning assembly 5, and the pipe orifices of the first HDPE pipe 8 and the second HDPE pipe 9 are arranged oppositely.

[0025] Place the first HDPE pipe 8 and the second HDPE pipe 9 to be docked on the first positioning component 4 and the second positioning component 5 respectively, ensuring that the pipe orifices of the first HDPE pipe 8 and the second HDPE pipe 9 are arranged opposite to each other; the first positioning component 4 realizes the stable positioning and clamping of the first HDPE pipe 8, and the second positioning component 5 is used to clamp and fix the second HDPE pipe 9; after the first HDPE pipe 8 and the second HDPE pipe 9 are positioned and clamped, start the hot air gun 7 on the support base 6, where the hot air gun 7 is located between the pipe orifices of the first HDPE pipe 8 and the second HDPE pipe 9, and its air outlet is aligned with the part of the pipe orifice that needs to be heated; according to the preset heating program or the operator's instruction, the hot air gun 7 starts to blow out high-temperature hot air to preheat and heat the pipe orifice, so that the HDPE material reaches the molten state; when the pipe orifices of the first HDPE pipe 8 and the second HDPE pipe 9 are heated to an appropriate temperature and present a molten state, start the telescopic cylinder 2, where the piston rod of the telescopic cylinder 2 retracts, driving the movable plate 3 and the second positioning component 5 above it to move towards the first positioning component 4. During the movement, the molten pipe orifices of the first HDPE pipe 8 and the second HDPE pipe 9 gradually approach and finally contact to form a molten butt joint; after the butt joint is completed, the telescopic cylinder 2 may maintain a certain pressure to keep the first HDPE pipe 8 and the second HDPE pipe 9 in close contact in the molten state to ensure full fusion at the butt joint. At the same time, the hot air gun 7 can be turned off to allow the butt joint to gradually solidify under natural or assisted cooling to form a strong joint; when the butt joint cools and solidifies, release the clamping state of the first positioning component 4 and the second positioning component 5, and remove the butt-jointed first HDPE pipe 8 and the second HDPE pipe 9 from the device. At this time, the two HDPE pipes have formed a continuous pipeline system through hot melt butt joint and are ready for subsequent installation or use. The whole process realizes the automatic and precise butt joint of the HDPE pipe orifices, improves the butt joint efficiency and quality, and ensures the stability and safety of the pipeline system.

[0026] Please refer to Figure 2 As an embodiment of the present utility model, the first positioning component 4 includes a first fixed bracket 401, where an installation seat 402 is provided at the upper end of the first fixed bracket 401; an activity slot 403 is opened at the upper end of the installation seat 402, and a positive and negative thread lead screw 404 is provided in the activity slot 403; both ends of the positive and negative thread lead screw 404 are movably connected to the installation seat 402, and fixed clamping blocks 405 are respectively provided on the outer wall of the positive and negative thread lead screw 404, and an arc-shaped slot 406 is opened at the clamping end of the fixed clamping block 405; a servo motor 407 is provided on the outer side of one end of the installation seat 402, and the output shaft of the servo motor 407 penetrates through the installation seat 402 and is connected to the positive and negative thread lead screw 404.

[0027] In the above-described solution, in the initial state, the left - hand and right - hand screw rod 404 is located within the movable slot 403 of the mounting base 402, and its two ends are movably connected to the mounting base 402, allowing it to rotate freely; the fixed clamping blocks 405 are respectively mounted on the outer wall of the left - hand and right - hand screw rod 404, and the clamping ends are provided with arc - shaped grooves 406 for clamping the HDPE pipe; at this time, the fixed clamping blocks 405 are in an open state, and the distance between the arc - shaped grooves 406 is sufficient to allow the first HDPE pipe 8 to be easily placed; the first HDPE pipe 8 to be butt - jointed is placed above the mounting base 402, ensuring that the pipe orifice of the first HDPE pipe 8 faces the position of the hot air gun 7; the servo motor 407 is started, and the output shaft of the servo motor 407 begins to rotate, driving the connected left - hand and right - hand screw rod 404 to rotate synchronously. Due to the special design of the left - hand and right - hand screw rod 404, the thread directions at its two ends are opposite. Therefore, when the screw rod rotates, the fixed clamping blocks 405 at both ends will move towards the center simultaneously; as the fixed clamping blocks 405 move, their arc - shaped grooves 406 gradually approach and fit the outer wall of the first HDPE pipe 8; when the fixed clamping blocks 405 move to a certain position, the arc - shaped grooves 406 will completely wrap the first HDPE pipe 8, achieving stable clamping; at this time, the first HDPE pipe 8 is accurately positioned and fixed on the first positioning component 4, preparing for the subsequent heating and butt - jointing; if it is necessary to finely adjust the position of the first HDPE pipe 8 or ensure that the clamping force is appropriate, it can be achieved by controlling the rotation speed and direction of the servo motor 407. Once the first HDPE pipe 8 is correctly clamped and positioned, the servo motor 407 will stop working and maintain the current state until the hot melt butt - jointing process is completed; when the hot melt butt - jointing process is completed, the servo motor 407 will reverse, driving the left - hand and right - hand screw rod 404 to rotate in the reverse direction, causing the fixed clamping blocks 405 to gradually open and release the first HDPE pipe 8; at this time, the butt - jointed first HDPE pipe 8 can be safely removed from the first positioning component 4 for subsequent installation or use.

[0028] Please refer to Figure 3 , as an embodiment of the present utility model, the second positioning component 5 includes a second fixed bracket 501, wherein a positioning slot 502 is provided at the upper end of the second fixed bracket 501; an active clamping arm 503 is provided above the positioning slot 502, wherein the active clamping arm 503 is of an arc - shaped structure, and the active clamping arm 503 is movably connected to the second fixed bracket 501; one end of the second fixed bracket 501 is hinged to the active clamping arm 503 through a pin shaft, the other end of the second fixed bracket 501 is provided with a buckle lock 504, and a lock tongue seat 505 adapted to the buckle lock 504 is provided at one end of the active clamping arm 503 close to the buckle lock 504.

[0029] In the above-described solution, in the initial state, the movable clamping arm 503 is in an open state, forming a large-arc space with a large opening together with the second fixed bracket 501. This space is used to place the second HDPE pipe 9 to be docked. The second HDPE pipe 9 to be docked is placed into the positioning groove 502, ensuring that the pipe body is closely attached to the bottom and side surfaces of the positioning groove 502, and the pipe orifice faces the position of the hot air gun 7. At this time, the movable clamping arm 503 is still in an open state and will not obstruct the second HDPE pipe 9. Then, the operator manually or through a mechanical device pushes the movable clamping arm 503 to rotate around the pin shaft and approach the center line of the positioning groove 502. As the movable clamping arm 503 closes, its arc-shaped structure gradually wraps around the outer wall of the second HDPE pipe 9, realizing the preliminary positioning of the second HDPE pipe 9. When the movable clamping arm 503 closes to a certain extent and the lock tongue seat 505 at one end close to the buckle lock 504 is aligned with the position of the buckle lock 504, the operator can buckle the buckle lock 504 onto the lock tongue seat 505, thereby locking the position of the movable clamping arm 503. This step ensures that the movable clamping arm 503 firmly clamps the second HDPE pipe 9 and prevents displacement during subsequent operations. After the buckle lock 504 is locked, the operator can check whether the second HDPE pipe 9 is correctly clamped and positioned in the positioning groove 502. If adjustment is needed, the buckle lock 504 can be reopened, the position of the movable clamping arm 503 can be adjusted, and then locked again. During the hot melt docking process, the second positioning assembly 5 will remain stable to ensure that the position of the second HDPE pipe 9 does not change. The arc-shaped structure of the movable clamping arm 503 and the locking mechanism of the buckle lock 504 together provide reliable support and fixation for the second HDPE pipe 9, contributing to the precise docking of the orifice of the second HDPE pipe 9 and the first HDPE pipe 8. When the hot melt docking process is completed, the operator can open the buckle lock 504 to release the locking of the movable clamping arm 503. Then, gently push the movable clamping arm 503 to return it to the initial open state. At this time, the second HDPE pipe 9 after docking can be safely removed from the second positioning assembly 5 for subsequent installation or use.

[0030] Please refer to Figure 3 , as an embodiment of the present invention, an elastic extrusion head 10 is provided inside the positioning groove 502, and the elastic extrusion head 10 is movably connected to the second fixed bracket 501 respectively on both sides close to the second fixed bracket 501.

[0031] In the above-described solution, in the initial state, the elastic extrusion head 10 is in an uncompressed state, and its internal space is large enough to easily place the second HDPE pipe 9 into the positioning groove 502; the second HDPE pipe 9 to be butt-jointed is placed into the positioning groove 502 to ensure that the pipe body is in close contact with the bottom and side surfaces of the positioning groove 502; during this process, the second HDPE pipe 9 will come into contact with the elastic extrusion head 10; then the operator manually or through a mechanical device pushes the movable clamping arm 503 to rotate around the pin shaft and approach the center line of the positioning groove 502; as the movable clamping arm 503 closes, its arc-shaped structure gradually wraps around the outer wall of the second HDPE pipe 9, and at this time the elastic extrusion head 10 will apply a certain extrusion force to the HDPE pipe to fix it more firmly in the positioning groove 502; the compressibility and recoverability of the elastic extrusion head 10 ensure that they can closely fit on the outer wall of the second HDPE pipe 9 to provide a stable clamping force; at the same time, the precise dimensions and shape of the positioning groove 502 further limit the movement range of the second HDPE pipe 9, achieving precise positioning of it; during the hot melt butt-jointing process, the elastic extrusion head 10 and the positioning groove 502 jointly provide stable support and fixation for the second HDPE pipe 9, and they can effectively prevent the second HDPE pipe 9 from being displaced or deformed during the butt-jointing process, thereby ensuring the accuracy and quality of the butt-jointing.

[0032] Please refer to Figure 4 , as an embodiment of the present utility model, a heat conduction block 11 is provided at the gun head of the hot air gun 7, and a circular heating cavity 12 is formed on one side of the heat conduction block 11, and the circular heating cavity 12 is communicated with the air outlet of the hot air gun 7.

[0033] In the above-described solution, the heat generated by the hot air gun 7 is quickly conducted to the entire circular heating cavity 12 through the heat conduction block 11 to achieve uniform distribution of heat; the user can respectively control the power of the heating element and the rotation speed of the fan through the temperature adjustment knob and the air volume adjustment knob on the hot air gun 7, so as to adjust the temperature and wind speed of the hot air; the heated air is discharged through the air outlet of the hot air gun 7 to form a high-temperature and high-speed air flow; since the air outlet is communicated with the circular heating cavity 12, the hot air can maintain a relatively high temperature and the heat distribution is uniform, and the user can accurately blow the hot air onto the surface of the object to be heated or welded by adjusting the angle and distance of the hot air gun 7.

[0034] Please refer to Figure 4 , as an embodiment of the present utility model, support ears 13 are symmetrically arranged at the upper end of the support base 6, and a pin hole 14 is formed in the support ear 13; movable pins 15 adapted to the pin holes 14 are symmetrically arranged at the lower ends of both sides of the heat conduction block 11, and the movable pins 15 are arranged in the pin holes 14 and are rotatably connected thereto.

[0035] In the above-mentioned scheme, support ears 13 are symmetrically arranged on the upper end of the support seat 6. This design helps to achieve balanced force distribution and improve overall stability; the support ear 13 is a protruding part fixed to the upper end of the support seat 6, and its shape and size are usually designed according to specific needs, and a pin hole 14 is provided on the support ear 13; the pin hole 14 is a hole provided on the support ear 13, and its shape and size are adapted to the movable pin 15 on the heat-conducting block 11, wherein the design of the pin hole 14 enables the movable pin 15 to be smoothly inserted and form a rotational connection with it; when the movable pin 15 is inserted into the pin hole 14, a rotational connection is formed between them, so that the heat-conducting block 11 can rotate or swing relative to the support seat 6 within a certain range; the rotational connection between the movable pin 15 and the pin hole 14 gives the heat-conducting block 11 a certain degree of freedom. When necessary, the heat transfer effect can be optimized by adjusting the angle or position of the heat-conducting block 11. This adjustability enables the structure to adapt to different working environments and needs.

[0036] See also Figure 5 As an embodiment of the present utility model, guide shafts 16 are symmetrically provided on both sides of the telescopic cylinder 2, wherein both ends of the guide shaft 16 are fixedly connected to the base 1 through a fixing seat 17; a linear bearing 18 adapted to the guide shaft 16 is symmetrically provided at the lower end of the movable plate 3, wherein the linear bearing 18 is sleeved on the outer wall of the guide shaft 16 and slides along its axial direction.

[0037] In the above-mentioned scheme, guide shafts 16 are symmetrically arranged on both sides of the telescopic cylinder 2. These guide shafts 16 play a guiding and supporting role, ensuring the stability and linearity of the movable plate 3 during the movement; the movable plate 3 is a component that needs to be moved or positioned, and a linear bearing 18 that is compatible with the guide shaft 16 is symmetrically arranged on its lower end; the linear bearing 18 is sleeved on the outer wall of the guide shaft 16 and slides along its axial direction. This design enables the movable plate 3 to perform smooth linear motion under the guidance of the guide shaft 16; when the telescopic cylinder 2 starts working, its telescopic motion will be transmitted to the movable plate 3. In this process, the guide shaft 16 plays a role in The key guiding role ensures that the movable plate 3 can move along a predetermined linear trajectory; at the same time, the guide shaft 16 and the fixed seat 17 also provide the necessary supporting force to prevent the movable plate 3 from offsetting or shaking during movement; the linear bearing 18 at the lower end of the movable plate 3 is closely matched with the guide shaft 16, realizing the smooth sliding of the movable plate 3 on the guide shaft 16, wherein the design of the linear bearing 18 makes the friction resistance during the sliding process smaller, thereby improving the operating efficiency and accuracy of the system; at the same time, by adjusting the position of the linear bearing 18 on the guide shaft 16, the precise control of the position of the movable plate 3 can also be achieved.

[0038] See also Figure 5 As an embodiment of the present invention, rollers 19 are respectively provided at the four corners of the bottom of the base 1, wherein a shock-proof foot cup 20 is arranged side by side on one side of the roller 19.

[0039] In the above-described solution, the design of the roller 19 enables the entire base 1 and the equipment it carries to move easily between different positions, facilitating the layout, adjustment, and maintenance of the equipment; through the rotation of the roller 19, the equipment can move flexibly on uneven ground, reducing the resistance and friction caused by the uneven ground and improving the moving efficiency; the shock-absorbing feet 20 usually have high rigidity and stability, and can effectively support the weight of the base 1 and the equipment, preventing the equipment from shaking or tilting during use; when the equipment needs to be fixed in a position for work, the shock-absorbing feet 20 can ensure the stability of the equipment, improving the processing accuracy and safety; the shock-absorbing feet 20 also have an adjustment function, and can adjust the height and level according to actual needs to ensure that the contact between the equipment and the ground is closer and more stable. This adjustment function is particularly important for installing equipment on uneven ground and can significantly improve the installation accuracy and stability of the equipment; by simultaneously arranging the roller 19 and the shock-absorbing feet 20 at the four corners of the bottom of the base 1, the dual requirements of the equipment in the moving and fixed states can be achieved; when the equipment needs to be moved, it can be easily carried using the roller 19; when the equipment reaches the designated position and needs to be fixed for work, the shock-absorbing feet 20 can be lowered to provide stable support and shock-absorbing effect. This design not only improves the flexibility and convenience of the equipment but also ensures the stability and safety of the equipment during operation.

[0040] Although the specific implementation manners of the present utility model have been described above, those skilled in the art should understand that these are only examples, and the protection scope of the present utility model is defined by the appended claims. Without departing from the principle and essence of the present utility model, those skilled in the art can make various changes or modifications to these implementation manners, but these changes and modifications all fall within the protection scope of the present utility model.

Claims

1. A hot melt butt joint device for the pipe orifice of an HDPE pipe, comprising a base (1), wherein a telescopic cylinder (2) is arranged above the base (1); characterized in that, The cylinder block of the telescopic cylinder (2) is fixedly connected to the base (1) through a fixing member, and an activity plate (3) is arranged above the telescopic cylinder (2); a connecting block is arranged at the lower end of the activity plate (3), and the connecting block is fixedly connected to the top end of the piston rod of the telescopic cylinder (2); a first positioning assembly (4) is arranged at one end of the base (1) close to the telescopic cylinder (2), and the first positioning assembly (4) is arranged above the telescopic cylinder (2); a second positioning assembly (5) is arranged above the activity plate (3), and a support seat (6) is arranged on one side of the second positioning assembly (5); a hot air gun (7) is arranged at the upper end of the support seat (6), and the hot air gun (7) is located between the first positioning assembly (4) and the second positioning assembly (5); a first HDPE pipe (8) is arranged on the first positioning assembly (4), a second HDPE pipe (9) is arranged on the second positioning assembly (5), and the pipe orifices of the first HDPE pipe (8) and the second HDPE pipe (9) are arranged oppositely.

2. The butt fusion device for the pipe orifice of an HDPE pipe according to claim 1, wherein The first positioning assembly (4) includes a first fixing bracket (401), and a mounting seat (402) is arranged at the upper end of the first fixing bracket (401); an activity groove (403) is formed at the upper end of the mounting seat (402), and a positive and reverse thread screw rod (404) is arranged in the activity groove (403); both ends of the positive and reverse thread screw rod (404) are movably connected to the mounting seat (402), fixed clamping blocks (405) are respectively arranged on the outer wall of the positive and reverse thread screw rod (404), and an arc-shaped groove (406) is formed at the clamping end of the fixed clamping block (405); a servo motor (407) is arranged on the outer side of one end of the mounting seat (402), and the output shaft of the servo motor (407) penetrates through the mounting seat (402) and is connected to the positive and reverse thread screw rod (404).

3. The butt fusion device for the pipe orifice of an HDPE pipe according to claim 1, characterized in that, The second positioning assembly (5) includes a second fixing bracket (501), and a positioning groove (502) is formed at the upper end of the second fixing bracket (501); an activity clamping arm (503) is arranged above the positioning groove (502), the activity clamping arm (503) is of an arc-shaped structure, and the activity clamping arm (503) is movably connected to the second fixing bracket (501).

4. The butt fusion device for the pipe orifice of an HDPE pipe according to claim 3, wherein, One end of the second fixing bracket (501) is hinged to the activity clamping arm (503) through a pin shaft, a buckle lock (504) is arranged at the other end of the second fixing bracket (501), and a lock tongue seat (505) is arranged at one end of the activity clamping arm (503) close to the buckle lock (504).

5. The butt fusion device for the pipe orifice of an HDPE pipe according to claim 3, characterized in that, An elastic extrusion head (10) is arranged inside the positioning groove (502), and both sides of the elastic extrusion head (10) are movably connected to the second fixing bracket (501).

6. The butt fusion device for the pipe orifice of an HDPE pipe according to claim 1, wherein, A heat conducting block (11) is provided at the tip of the hot air gun (7). An annular heating cavity (12) is formed on one side of the heat conducting block (11), and the annular heating cavity (12) is communicated with the air outlet of the hot air gun (7). Symmetric support ears (13) are arranged at the upper end of the support base (6), and a pin hole (14) is formed in the support ear (13). Symmetric movable pins (15) adapted to the pin holes (14) are arranged at the lower ends of both sides of the heat conducting block (11), and the movable pins (15) are arranged in the pin holes (14) and rotatably connected thereto.

7. The butt fusion device for the pipe orifice of an HDPE pipe according to claim 1, wherein, Guide shafts (16) are symmetrically arranged on both sides of the telescopic cylinder (2), and both ends of the guide shafts (16) are fixedly connected to the base (1) through fixing seats (17). Symmetric linear bearings (18) adapted to the guide shafts (16) are arranged at the lower end of the movable plate (3), and the linear bearings (18) are sleeved on the outer wall of the guide shafts (16) and slide along the axial direction thereof.

8. The butt fusion device for the pipe orifice of an HDPE pipe according to claim 1, wherein, Rollers (19) are respectively arranged at the four corners of the bottom of the base (1), and shock-proof foot cups (20) are arranged side by side on one side of the rollers (19).

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