Hot melting butt joint end structure for plastic pipe connection

Abstract

The utility model discloses a hot melting butt joint end structure used for plastic pipe connection, which comprises a base, a heater used for hot melting of a pipeline is arranged on the base, the heater and the base are fixedly installed through a lifting piece, when the heater ascends, a first working area is formed, and when the heater resets, a second working area is formed. A supporting plate is connected to the base in a sliding mode. According to the utility model, the two sections of pipelines are always kept in a coaxial state before hot melting, during hot melting and during butt joint through the guide constraint of the slide rail and the guide block, the accurate positioning matching of the magnetic attraction block and the magnetic attraction groove and the synchronous adjustment design that the bidirectional screw rod drives the movable block, so that the problems of axial deviation and radial dislocation are effectively avoided, and the production efficiency is improved. Meanwhile, due to the design of the replaceable end of the heater and the fillet heating surface, it is guaranteed that hot melting of the pipeline end is uniform, the surface is not scratched, the sealing performance and the structural strength of butt joint of the plastic pipes are effectively improved, and the hidden danger of leakage in the long-term using process is reduced.

Description

Technical Field

[0001] This utility model relates to the field of hot-melt technology for plastic pipes, and more specifically, to a hot-melt butt joint structure for connecting plastic pipes. Background Technology

[0002] Plastic pipes are widely used in building water supply and drainage, municipal engineering, and industrial pipelines due to their advantages such as light weight, corrosion resistance, and convenient installation. The quality of their connection directly affects the operational stability of the pipeline system. Hot fusion butt welding, which can achieve fusion bonding of the pipe body, has become one of the core methods of connecting plastic pipes. It is necessary to ensure the accurate positioning and reliable locking of the pipe during the butt welding process to ensure the sealing and structural strength of the connection and avoid safety hazards such as leakage and detachment during long-term use.

[0003] Existing plastic pipe hot-melt butt welding equipment typically employs manual positioning or simple mechanical clamping structures. After the pipe ends are hot-melted using heating elements, the two pipe sections are then joined and compacted. In practical applications, this type of equipment relies heavily on operator experience to adjust the pipe position, and the clamping structure is often of fixed size or uses a single adjustment method to accommodate pipes of different diameters.

[0004] However, existing technologies have certain problems. On the one hand, the pipe positioning accuracy is insufficient, and axial offset or radial misalignment is prone to occur during the docking process, resulting in uneven bonding of the hot melt surface, which in turn affects the connection sealing performance and may cause leakage problems after long-term use. On the other hand, the adaptability and locking reliability of the clamping structure are poor, making it difficult to flexibly match various specifications of plastic pipes. Improper control of the locking force can easily cause damage to the pipe surface, or cause pipe displacement during docking due to insecure clamping. At the same time, the switching between the heating area and the docking area is not convenient enough, affecting the operation efficiency and increasing construction costs and time consumption. Therefore, we urgently need a hot melt docking end structure for plastic pipe connection to solve the above problems. Utility Model Content

[0005] One objective of this invention is to provide a new technical solution for a thermofusion butt joint end structure for connecting plastic pipes. Through slide rail guidance, magnetic positioning, multi-specification clamping structure, and precise temperature control heating design, it enables rapid adaptation and coaxial docking of plastic pipes of different diameters, improves connection sealing and structural strength, and further enhances construction efficiency.

[0006] According to a first aspect of this utility model, a heat-fusion butt joint structure for connecting plastic pipes is provided, including a base, on which a heater for heat-fusion pipes is disposed. The heater is fixedly installed to the base via a lifting component. When the heater rises, a first working area is formed, and when the heater returns to its original position, a second working area is formed. A support plate is slidably connected to the base, and a magnetic block for positioning is fixedly installed on the support plate. A positioning seat is fixedly installed on the base, and a magnetic groove matching the magnetic block is provided on the positioning seat. When the magnetic block and the magnetic groove are magnetically attracted, a positioning area is formed. Moving blocks are symmetrically slidably arranged on the support plate, and clamping components for locking the pipes are provided on two sets of moving blocks.

[0007] Optionally, the lifting component includes a mounting base fixedly installed on the base, the mounting base having a slide rod for lifting the heater, and the heater having a first sliding groove adapted to the slide rod, forming a lifting area when the slide rod slides in the first sliding groove.

[0008] Optionally, a first screw is rotatably connected to the mounting base, and a slider is threadedly connected to the first screw. The heater is fixedly installed with the slider, and when the first screw is rotated, the heater moves up and down along the path of the first screw.

[0009] Optionally, the base is symmetrically equipped with slide rails, the support plate is slidably connected to the slide rails, the upper part of the support plate is symmetrically provided with a second slide groove for guidance, the positioning seat is integrally formed with a guide block adapted to the second slide groove, and the inner wall of the positioning seat is fitted with a damping pad for anti-slip.

[0010] Optionally, a sliding plate is fixedly connected to the support plate, and a bidirectional screw is rotatably connected inside the sliding plate. The two sets of moving blocks are respectively threaded onto the two ends of the bidirectional screw. When the bidirectional screw rotates, the two sets of moving blocks move relative to each other or move away from each other.

[0011] Optionally, the clamping member includes a third sliding groove formed on the movable block, a vertical plate slidably connected in the third sliding groove, a first limiting hole formed on the vertical plate, and second limiting holes linearly and equidistantly formed on the third sliding groove. When the first limiting hole and any of the second limiting holes are coaxial, they are locked by the limiting member to form a locking area.

[0012] Optionally, a hinged seat is fixedly connected to the upright plate, and each hinged seat is hinged with a locking buckle for locking the pipe. At least three sets of arc-shaped grooves are opened on the upright plate. When the end of the locking buckle abuts against the surface of the upright plate, it is locked by the limiting member to form a locking area.

[0013] Optionally, silicone pads are fixedly installed on both the locking buckle and the arc-shaped groove.

[0014] 1. According to one embodiment of this disclosure, the heat-fusion butt joint structure for connecting plastic pipes ensures that the two pipe sections remain coaxial before, during, and during heat fusion by means of the guiding constraint of the slide rail and guide block, the precise positioning and cooperation of the magnetic block and magnetic groove, and the synchronous adjustment design of the bidirectional screw drive moving block. This effectively avoids axial offset and radial misalignment problems. At the same time, the design of the heater with replaceable end and rounded heating surface ensures that the pipe end heat fusion is uniform and the surface is free of scratches, effectively improving the sealing performance and structural strength of the plastic pipe joint and reducing the risk of leakage during long-term use.

[0015] 2. According to one embodiment of this disclosure, the heat-fusion butt joint structure for connecting plastic pipes achieves flexible adaptation to plastic pipes of different diameters through the design of multi-size arc grooves and height-adjustable vertical plates. Combined with the quick locking function of the magnetic locking buckle, the pipe can be firmly clamped without additional tools. The scale markings of the bidirectional screw and the precise lifting and lowering adjustment of the heater reduce the reliance on experience and difficulty of manual operation, improve construction efficiency, and at the same time, the buffer protection of the silicone pad avoids damage to the pipe clamping, taking into account the versatility of the equipment, ease of operation and safety of use.

[0016] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0018] Figure 1 This is a first-view overall structural schematic diagram of a thermofusion butt joint end structure for connecting plastic pipes in one embodiment.

[0019] Figure 2 This is a second-view overall structural schematic diagram of a thermofusion butt joint end structure for connecting plastic pipes in one embodiment;

[0020] Figure 3 This is a schematic diagram of a base structure for a thermofusion butt joint end structure for connecting plastic pipes in one embodiment.

[0021] Figure 4 This is a partial cross-sectional view of a thermofusion butt joint structure for connecting plastic pipes in one embodiment.

[0022] The following are labeled in the diagram: 1. Base; 2. Heater; 3. Support plate; 4. Magnetic block; 5. Positioning seat; 6. Magnetic groove; 7. Moving block; 8. Mounting seat; 9. Slide rod; 10. First slide groove; 11. First screw; 12. Slider; 13. Slide rail; 14. Second slide groove; 15. Guide block; 16. Damping pad; 17. Sliding plate; 18. Bidirectional screw; 19. Third slide groove; 20. Vertical plate; 21. First limiting hole; 22. Second limiting hole; 23. Hinge seat; 24. Locking buckle; 25. Arc groove; 26. Silicone pad. Detailed Implementation

[0023] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0024] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0025] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0026] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0027] like Figure 1-4 As shown, a heat fusion butt joint structure for connecting plastic pipes includes a base 1, on which a heater 2 for heat fusion pipes is provided.

[0028] Here, the legs of the base 1 are equipped with anti-slip pads to improve stability during placement and use. The heater 2 is used to heat melt the pipe. The end of the heater 2 is replaceable and can cover the end of commonly used plastic pipes, thereby ensuring that the pipe end can be completely attached to the heating surface and ensuring uniform heating of the pipe end. The heating surface of the heater 2 is made of high-temperature resistant alloy material, which will not deform or rust under long-term high-temperature operation.

[0029] Furthermore, heater 2 has a temperature control function. The temperature sensor can monitor the temperature of the heating surface in real time and can adjust to a suitable heating temperature according to the requirements of different materials such as PPR and PE pipes. This is a direct reference to conventional technical solutions and will not be elaborated on here. The edges of the heating surface are ground into rounded corners and there are no sharp edges, so as not to scratch the surface of the pipe end when putting in or taking out the pipe.

[0030] The heater 2 is fixedly installed on the base 1 via a lifting component. When the heater 2 rises, it forms a first working area. When the heater 2 returns to its original position, it forms a second working area. The lifting component includes a mounting base 8 fixedly installed on the base 1. The mounting base 8 has a slide rod 9 for lifting the heater 2. The heater 2 is provided with a first sliding groove 10 that matches the slide rod 9. When the slide rod 9 slides in the first sliding groove 10, the lifting area is formed.

[0031] Here, a relatively precise clearance fit is used between the slide bar 9 and the first slide groove 10, which can ensure that the heater 2 can be raised and lowered smoothly without jamming, and can also limit its lateral displacement, ensuring the coaxial alignment accuracy of the heating surface and the pipe end in the second working area.

[0032] Furthermore, in practical use, the surface of the slide bar 9 can be coated with high-temperature wear-resistant grease, thereby reducing the coefficient of sliding friction, reducing wear and deformation after long-term use, and improving the smoothness of lifting operation and increasing work efficiency.

[0033] Furthermore, in the first working area, which is the docking area after the pipe ports have been heat-fused, the heater 2 moves upward to create docking space to ensure that the ports of the two pipes are precisely aligned, facilitating subsequent docking operations. In the second working area, which is the heat-fusion zone, the ports of the two pipes are coaxial with the heating port of the heater 2, thus ensuring the accuracy of the heat-fusion.

[0034] A first screw 11 is rotatably connected to the mounting base 8, and a slider 12 is threadedly connected to the first screw 11. The heater 2 is fixedly installed with the slider 12. When the first screw 11 is rotated, the heater 2 moves up and down along the path of the first screw 11.

[0035] In this specific implementation, the first screw 11 adopts a high-precision trapezoidal thread structure, which has strong thread profile load-bearing capacity and high transmission accuracy, and can realize the height adjustment of the heater 2, ensuring the stability of switching between the first working area and the second working area.

[0036] Furthermore, a rotating handle is provided at the end of the first screw 11 for easy turning, which facilitates quick manual turning; the slider 12 and the heater 2 are fixed by a double fixing method of bolt fastening + positioning pin positioning, which can avoid the connection loosening caused by long-term vibration, ensure that the heater 2 and the slider 12 rise and fall synchronously, and improve the stability of movement.

[0037] A support plate 3 is slidably connected to the base 1, and slide rails 13 are symmetrically installed on the base 1. The support plate 3 is slidably connected to the slide rails 13. A magnetic block 4 for positioning is fixedly installed on the support plate 3. A positioning seat 5 is fixedly installed on the base 1. A magnetic groove 6 matching the magnetic block 4 is opened on the positioning seat 5. When the magnetic block 4 and the magnetic groove 6 are magnetically attracted, a positioning area is formed.

[0038] Here, the slide rail 13 ensures that the two sets of support plates 3 remain parallel when sliding, which facilitates the coaxial alignment of the pipe and the heating port of the heater 2 by sliding the support plate 3 after the pipe is clamped, and avoids axial misalignment of the two pipe sections due to the offset of the support plate 3.

[0039] Furthermore, the magnetic block 4 is made of neodymium iron boron strong magnetic material, and the inner wall of the magnetic groove 6 is made of magnetically conductive alloy material. Through the attraction of magnetic force, it can achieve rapid adsorption and positioning, and can also be easily separated by manpower, taking into account both positioning stability and operational flexibility.

[0040] Furthermore, the mating surfaces of the magnetic block 4 and the magnetic groove 6 are polished to reduce the adsorption gap, thereby improving positioning accuracy and avoiding docking wobbling caused by the gap.

[0041] The upper part of the support plate 3 is symmetrically provided with a second slide groove 14 for guidance, and the positioning seat 5 is integrally formed with a guide block 15 adapted to the second slide groove 14. The inner wall of the positioning seat 5 is fitted with a damping pad 16 for anti-slip.

[0042] Here, the cooperation between the second slide 14 and the guide block 15 can further improve the radial accuracy of positioning and avoid radial misalignment during pipe docking. The guide block 15 is made of wear-resistant engineering plastic material, which has a low coefficient of friction when sliding in contact with the second slide 14, reducing wear during long-term use and reducing operating noise.

[0043] Furthermore, the damping pad 16 is made of high-elasticity nitrile rubber with anti-slip texture on the surface. After magnetic positioning, it provides additional anti-slip resistance through friction with the support plate 3, preventing the support plate 3 from shifting due to equipment operation or slight collisions.

[0044] The support plate 3 has symmetrically sliding moving blocks 7. The two sets of moving blocks 7 are equipped with clamping parts for locking the pipe. The support plate 3 is fixedly connected to a sliding plate 17. The sliding plate 17 is rotatably connected to a bidirectional screw 18. The two sets of moving blocks 7 are respectively threaded onto the two sections of the bidirectional screw 18. When the bidirectional screw 18 rotates, the two sets of moving blocks 7 move relative to each other or move away from each other.

[0045] Here, the two sections of the bidirectional screw 18 have opposite thread directions and the same lead, which can achieve central symmetry when clamping the pipe and avoid clamping offset, and can also drive the two sets of pipes to be precisely connected after heat fusion. In specific implementation, the middle of the bidirectional screw 18 is set with clear scale markings, and the operator can quickly adjust the spacing of the moving block 7 according to the pipe diameter, which improves the convenience and accuracy of clamping adjustment.

[0046] Furthermore, the sliding plate 17 has a guide groove inside that is adapted to the moving block 7, which is used to restrict the moving block 7 and ensure that it slides smoothly only along the axial direction, thereby improving the clamping stability.

[0047] The clamping component includes a third slide groove 19 formed on the movable block 7. A vertical plate 20 is slidably connected in the third slide groove 19. A first limiting hole 21 is formed on the vertical plate 20. A second limiting hole 22 is linearly and equidistantly formed on the third slide groove 19. When the first limiting hole 21 is coaxial with any of the second limiting holes 22, the limiting component locks them together and forms a locking area.

[0048] Here, the vertical plate 20 can slide up and down along the groove, thereby realizing flexible adjustment of the clamping height to adapt to the clamping requirements of pipes of different diameters; the second limiting holes 22 are linearly arranged at 5mm intervals and can be used to adjust the gear to ensure that the vertical plate 20 can be accurately fixed at the position that matches the center height of the pipe, thereby improving the clamping fit.

[0049] Furthermore, the limiting component adopts a quick-release elastic pin, and the pin head is equipped with an anti-slip pressing structure, which can be quickly inserted and removed for adjustment without additional tools, thus improving construction efficiency.

[0050] A hinge seat 23 is fixedly connected to the upright plate 20. Each hinge seat 23 is hinged with a locking buckle 24 for locking the pipe. At least three sets of arc grooves 25 are provided on the upright plate 20. When the end of the locking buckle 24 abuts against the surface of the upright plate 20, it is locked by the limiting member and a locking area is formed. Silicone pads 26 are fixedly installed on the locking buckle 24 and the arc grooves 25.

[0051] Here, three sets of arc-shaped grooves 25 are evenly distributed along the height direction of the vertical plate 20. The locking buckle 24 and the arc-shaped grooves 25 are matched one by one to form a good clamping of the pipe. The three sets of arc-shaped grooves 25 are of various sizes to adapt to various pipes of different specifications, further improving the clamping fit and locking reliability.

[0052] Furthermore, the limiting component uses magnetic attraction for locking. Its magnetism is strong and it will not easily loosen. It can only be separated by external force, ensuring the stability of the clamping. The silicone pad 26 is used to increase the contact area with the pipe, ensuring a better clamping effect.

[0053] In this invention, during use, the height of the upright plate 20 is adjusted in conjunction with the third sliding groove 19. After selecting the corresponding position, the upright plate 20 is fixed by the elastic pin. The pipe is placed in the arc-shaped groove 25 of the corresponding size. At this time, the locking buckle 24 is rotated to engage with the arc-shaped groove 25 on the upright plate 20. The locking buckle 24 is secured by magnetic attraction. The silicone pad 26 adheres to the surface of the pipe to achieve a firm clamping without damaging the pipe wall. The two sets of support plates 3 slide along the slide rail 13 on the base 1. The magnetic block 4 engages with the magnetic groove 6 on the positioning seat 5 to achieve initial positioning. At the same time, the cooperation of the second sliding groove 14 and the guide block 15, as well as the anti-slip effect of the damping pad 16, are utilized. This ensures that the heating ports of the pipe and heater 2 are coaxially positioned. Then, the bidirectional screw 18 is rotated to move the two sets of moving blocks 7 closer together, so that the two sets of pipe ports are simultaneously inserted into the heating ports of heater 2. The appropriate heating temperature is set according to the pipe material through the temperature control function, and the ends of the two pipe sections are uniformly heat-melted. After the heat melting is completed, the first screw 11 is rotated to raise heater 2 to the first working area to create a docking space. At this time, rotating the bidirectional screw 18 can move the two sets of moving blocks 7 relative to each other, so that the ends of the two heat-melted pipe sections are precisely fitted together. The docking state is maintained by the stability of magnetic positioning until the pipes cool down and are firmly connected.

[0054] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A hot-melt butt joint end structure for plastic pipe connection, comprising a base (1), characterized in that: a heater (2) for hot-melt pipe is arranged on the base (1), the heater (2) is fixedly installed on the base (1) through a lifting piece, a first working area is formed when the heater (2) is lifted, and a second working area is formed when the heater (2) is reset; a support plate (3) is slidably connected to the base (1), a magnetic attraction block (4) for positioning is fixedly installed on the support plate (3), a positioning seat (5) is fixedly installed on the base (1), a magnetic attraction groove (6) matched with the magnetic attraction block (4) is formed in the positioning seat (5), and a positioning area is formed when the magnetic attraction block (4) is magnetically attracted to the magnetic attraction groove (6); a moving block (7) is symmetrically slidably arranged on the support plate (3), and a clamping piece for locking the pipe is arranged on the two groups of moving blocks (7). The lifting piece comprises a mounting seat (8) fixedly installed on the base (1), a sliding rod (9) for lifting the heater (2) is formed in the mounting seat (8), a first sliding groove (10) matched with the sliding rod (9) is arranged on the heater (2), and a lifting area is formed when the sliding rod (9) slides in the first sliding groove (10).

2. A hot melt butt fusion splicing end structure for plastic pipe connection according to claim 1, characterized in that: A first screw rod (11) is rotatably connected to the mounting seat (8), a sliding block (12) is threadedly connected to the first screw rod (11), and the heater (2) and the sliding block (12) are fixedly installed, so that the heater (2) moves up and down along the path of the first screw rod (11) when the first screw rod (11) is rotated.

3. A hot melt butt fusion splicing end structure for plastic pipe connection according to claim 2, characterized in that: Symmetrical slide rails (13) are installed on the base (1), the support plate (3) is slidably connected to the slide rails (13), second sliding grooves (14) for guiding are symmetrically formed in the upper part of the support plate (3), guiding blocks (15) matched with the second sliding grooves (14) are integrally formed on the positioning seat (5), and damping pads (16) for preventing sliding are attached to the inner wall of the positioning seat (5).

4. A hot melt butt fusion splicing end structure for plastic pipe connection according to claim 3, characterized in that: A sliding plate (17) is fixedly connected to the support plate (3), a bidirectional screw rod (18) is rotatably connected in the sliding plate (17), and the two groups of moving blocks (7) are threadedly connected to the two sections of the bidirectional screw rod (18), so that the two groups of moving blocks (7) move relative to each other or away from each other when the bidirectional screw rod (18) is rotated.

5. A hot melt butt fusion splicing end structure for plastic pipe connection according to claim 4, characterized in that: The clamping piece comprises a third sliding groove (19) formed in the moving block (7), a vertical plate (20) is slidably connected in the third sliding groove (19), a first limiting hole (21) is formed in the vertical plate (20), second limiting holes (22) are linearly and equidistantly formed in the third sliding groove (19), and the first limiting hole (21) is coaxial with any second limiting hole (22), so that the first limiting hole (21) is locked by a limiting piece and a locking area is formed when the first limiting hole (21) is coaxial with any second limiting hole (22).

6. A hot melt butt fusion splicing end structure for plastic pipe connections according to claim 5, characterized in that: A hinge seat (23) is fixedly connected to the vertical plate (20), locking buckles (24) for locking the pipe are hingedly connected to the hinge seat (23), at least three arc-shaped grooves (25) are formed in the vertical plate (20), and the end of the locking buckle (24) is locked by a limiting piece and a locking area is formed when the end of the locking buckle (24) abuts against the surface of the vertical plate (20).

7. A hot melt butt fusion splicing end structure for plastic pipe connections according to claim 6, characterized in that: ​ 8. A hot melt butt fusion splicing end structure for plastic pipe connections according to claim 7, characterized in that: The locking buckle (24) and the arc-shaped slot (25) are fixedly provided with silica gel pads (26).

Images