Welding device for bell and spigot of HDPE (high-density polyethylene) inner rib winding pipe

Abstract

The utility model discloses a welding device for a bell and spigot of an HDPE (high-density polyethylene) inner rib winding pipe, which comprises a rolling component, a pushing component and an extruder, a pipe main body of which the shaft end is inserted with the bell or spigot is placed on the rolling component to roll; the extruder is arranged at the tail end of the pipe body and used for extruding a welding rubber strip to the joint of the bell mouth or the spigot and the pipe body, and the pushing assembly is arranged at the shaft end of the pipe body and used for pushing the bell mouth or the spigot to be pressed into the pipe body. The pipe body is rotated through the rolling device, the extruding machine extrudes the welding adhesive tape to the joint of the bellmouth or the spigot and the pipe body, then the bellmouth or the spigot is extruded through the pushing assembly so that the bellmouth or the spigot can be thoroughly pressed into the pipe body to complete welding, the welding quality is good, and the efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic pipe welding, and more specifically to a welding device for a socket of a HDPE inner rib-wrapped pipe. Background Art

[0002] HDPE spiral pipe is a pipe made of high-density polyethylene as the main material. It is a structural wall pipe made by combining high-strength steel strips with HDPE resin and using a hot spiral molding process. The inner surface of the HDPE spiral pipe is very smooth and has good regularity. This pipe has the characteristics of corrosion resistance, light weight, easy installation, large flux, and long life. Therefore, it is widely used in many fields, especially in the construction of buried drainage pipes. Due to its excellent performance, HDPE spiral pipe is considered an environmentally friendly green product and one of the high-tech composite pipe products.

[0003] HDPE spiral pipes have been widely used in municipal engineering, such as drainage, sewage, and water supply networks. Due to its corrosion resistance, long life, and easy installation, it can effectively reduce maintenance costs and time; in industrial parks, drainage systems are an important issue. HDPE spiral pipes can be used in drainage, sewage, and other fields to solve sewage discharge and treatment problems. Using HDPE spiral pipes as drainage pipe systems can effectively solve the discharge and treatment of sewage in the park; in the field of agricultural irrigation, HDPE spiral pipes can be used in irrigation pipe systems, which can improve irrigation efficiency and quality. Using HDPE spiral pipes as irrigation pipe systems on farms can effectively improve the yield and quality of crops.

[0004] Existing large-diameter HDPE winding pipes have the characteristics of large size, low equipment investment, and simple molding, and are widely used in the field of municipal drainage and sewage. Due to the molding characteristics of HDPE inner rib winding pipes, the shape of the port is irregular after the end face is cut, which brings trouble to the subsequent installation of the socket and spigot. The current technology inserts the socket and spigot into both ends of the pipe and then performs manual welding, but the welding strength is difficult to guarantee and the efficiency is low.

[0005] Chinese patent CN111331850B discloses an automatic plastic pipe welding device, including a frame, a support rod, a clamping unit and a rotation-promoting unit, wherein the clamping unit includes two clamping blocks, the two clamping blocks are used to clamp the ends of the pipe, the rotation-promoting unit includes a rotating roller that is rotatably arranged, the rotating roller is used to rotate the pipe, the support rod is vertically slidably arranged on the frame, and the support rod is located above the contact position between the connecting pipe and the flange, and the lower end of the support rod is fixedly connected with a soldering iron, the soldering iron is used to process the limit hole on the connecting pipe and the pipe, the limit hole is used to assemble the limit block, and the limit block can limit the deformation of the flange and the connecting pipe. This technical solution is improved compared with the finishing welding, but due to the problem of irregular pipe ends, the welding quality is difficult to guarantee. Utility Model Content

[0006] In order to solve the above problems, the utility model proposes a welding device for the socket and spigot of a HDPE inner rib wrapped pipe. The device can rotate the pipe body through a rolling device, and an extruder extrude a welding strip to the connection between the socket or spigot and the pipe body. Then, the socket or spigot is squeezed by a pushing component to be completely pressed into the pipe body to complete the welding. Compared with traditional manual welding, the welding quality is good and the efficiency is high.

[0007] In order to achieve the above-mentioned purpose, the utility model provides a welding device for the socket and spigot of an HDPE inner rib wrapped pipe, comprising a rolling assembly, a pushing assembly and an extruder. A pipe body with a socket or a spigot plugged into the axial end is placed on the rolling assembly for rolling. The extruder is arranged at the end of the pipe body and is used to extrude a welding strip toward the connection between the socket or the spigot and the pipe body. The pushing assembly is arranged at the axial end of the pipe body and is used to push the socket or the spigot into the pipe body.

[0008] In the present technical solution, the socket and the spigot are respectively inserted into the two ends of the pipe body and a gap is left at the connection between the socket and the spigot and the pipe body. The pipe body is placed on a rolling assembly, and the extruder extrude a high-temperature welding strip that overlaps the gap at the connection of the pipe body. Then the pipe body rotates axially along with the rolling assembly, so that the welding strip is evenly wound at the connection of the pipe body. After the welding strip is sufficiently wound, the welding strip is cut off, and the pushing assembly pushes the socket and the spigot into the pipe body. After the welding strip is cooled, the welding is completed.

[0009] As a preferred solution, in order to rotate the pipe body, the rolling assembly includes a first support frame, a rolling structure and a driving motor. The rolling structure is rotatably connected to the first support frame. The driving motor is installed on the first support frame and connected to the rolling structure for driving the rolling structure to rotate.

[0010] As a preferred solution, the rolling structure includes two rollers arranged parallel to each other, both ends of the two rollers are respectively rotatably connected to the first support frame, the two rollers are respectively connected to the driving motor through a transmission structure, the gap between the two rollers is smaller than the diameter of the pipe body, the pipe body is placed side by side between the two rollers, and the two rollers are driven by the driving motor to rotate in the same direction and at the same speed.

[0011] As a preferred solution, in order to make the rotation speeds of the two rollers the same, a driven gear is installed on the roller, a driving gear is provided at the output end of the drive motor, and the driven gears on the two rollers are respectively meshed with the driving gear.

[0012] As a preferred solution, the two pushing components are respectively arranged at the two ends of the pipe body and arranged opposite to each other, and are used to push the socket and the plug to the two ends of the pipe body respectively to connect the uncooled welding strips thereon and press them into the pipe body.

[0013] As a preferred solution, the pushing assembly is arranged at one end of the pipe body, and the other end of the pipe body is provided with a baffle corresponding to the pushing assembly, the area of ​​the baffle is larger than the port area of ​​the pipe body, the baffle is used to block one end of the pipe body, and the pushing assembly pushes the pipe body from the other end to complete the assembly of the socket and the plug.

[0014] As a preferred solution, the pushing assembly includes a telescopic structure, a push plate and a second support frame. The telescopic structure is arranged on the second support frame and corresponds to the axial direction of the pipe body. The push plate is fixed to the telescopic end of the telescopic structure. The telescopic structure drives the push plate to push toward the axial end of the pipe body.

[0015] As a preferred solution, in order to make the socket or the plug receive uniform force when being pushed, the push plate is parallel to the end face of the pipe body, and the area of ​​the push plate is larger than the port area of ​​the pipe body.

[0016] As a preferred solution, in order to allow the high-temperature welding strip to be quickly wound around the connection between the socket or the spigot and the pipe body, the two extruders are respectively arranged at the connection between the socket or the spigot and the pipe body.

[0017] As a preferred solution, in order to make the winding direction of the welding strip on the pipe body the same to maintain aesthetics, the two extruders are arranged diagonally on both sides of the pipe body.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] The utility model extrude high-temperature welding adhesive strips at the connection between the socket or spigot and the pipe body through an extruder and presses the socket or spigot into the pipe body through a pushing component to complete welding, so the welding quality is good and the efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the welding device of the utility model;

[0021] Figure 2 is a schematic structural diagram of Example 1;

[0022] Figure 3 It is a schematic diagram of the structure of the rolling component and the pushing component;

[0023] Figure 4 It is a structural diagram of the pipe body.

[0024] In the figure: pipe body 1; socket 101; spigot 102; rolling assembly 2; first support frame 201; roller 202; drive motor 203; driving gear 204; driven gear 205; pushing assembly 3; second support frame 301; telescopic structure 302; push plate 303; extruder 4; third support frame 5. DETAILED DESCRIPTION

[0025] The drawings are only for illustrative purposes and cannot be construed as limiting the present invention. To better illustrate the present embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are only for illustrative purposes and cannot be construed as limiting the present invention.

[0026] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "long", "short" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0027] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0028] Embodiment 1:

[0029] like Figures 1 to 4As shown, a welding device for the socket of a HDPE inner rib wrapped pipe is provided, comprising a rolling component 2, a pushing component 3 and an extruder 4. A pipe body 1 with a socket 101 or a plug 102 plugged into an axial end is placed on the rolling component 2 for rolling. The extruder 4 is arranged at the end of the pipe body 1 and is used to extrude a welding strip to the connection between the socket 101 or the plug 102 and the pipe body 1. The pushing component 3 is arranged at the axial end of the pipe body 1 and is used to push the socket 101 or the plug 102 into the pipe body 1. In this embodiment, the HDPE inner rib wrapped pipe body 1 The winding pipe has good resistance to stress cracking and environmental stress cracking. It has good high-temperature impact resistance and can be safely used in the temperature range of -60-60℃. Due to its good impact resistance, the pipe will not crack. It has good chemical corrosion resistance. HDPE can withstand corrosion from many chemical media. Polyethylene is an electrical insulator, so it will not decay, rust or electrochemical corrosion, nor will it promote the growth of bacteria, fungi and algae. Good wear resistance: HDPE's wear resistance is 4 times that of steel pipes. Compared with steel pipes, HDPE has better wear resistance, longer life and better economy.

[0030] In this embodiment, the extruder 4 can perform welding construction on thermoplastic products such as PP, PE, HDPE, PVDF plastic plates, pipes, etc. Especially for welding large-diameter pipes, anti-corrosion cylinders, waterproof ground films, environmentally friendly ground films, and plastic floors. Damage repair, etc. It is an essential equipment for domestic plastic equipment manufacturing, processing, gas transmission pipelines, equipment and chemical pipeline installation, waterproof engineering, and tunnel engineering. The rotation speed of the rolling component 2 is adapted to the extrusion speed of the extruder 4, and the pushing component 3 can further compress the welding strip on the socket 101 or the socket 102 to ensure the welding quality.

[0031] In this embodiment, multiple pipe bodies 1 are connected by a socket-and-spigot combination, which is simple to install and saves time and effort. The socket-and-spigot connection is very strong and has strong resistance to external impact. The socket-and-spigot has strong sealing performance and can effectively prevent corrosion from corroding the pipe connection port, thereby ensuring the sealing performance of the pipe, extending the operation time of the pipe, and reducing the maintenance and repair costs of the pipe.

[0032] Specifically, the rolling assembly 2 includes a first support frame 201, a rolling structure and a driving motor 203. The rolling structure is rotatably connected to the first support frame 201. The driving motor 203 is installed on the first support frame 201 and connected to the rolling structure for driving the rolling structure to rotate.

[0033] Specifically, the rolling structure includes two rollers 202 arranged parallel to each other, and the two ends of the two rollers 202 are respectively rotatably connected to the first support frame 201, and the two rollers 202 are respectively connected to the driving motor 203 through a transmission structure. The gap between the two rollers 202 is smaller than the diameter of the pipe body 1, and the pipe body 1 is placed side by side between the two rollers 202.

[0034] In this embodiment, the driving motor 203 drives the two rollers 202 to rotate synchronously.

[0035] Specifically, the pushing component 3 is arranged at one end of the second support frame 301, and the other end of the second support frame 301 is provided with a third support frame 5 corresponding to the pushing component 3, and the third support frame 5 is vertically fixed with a baffle, and the area of ​​the baffle is larger than the port area of ​​the pipe body 1.

[0036] In this embodiment, if Figure 2 As shown, the pipe body 1 inserted into the socket 101 and the plug 102 is hoisted onto the first support frame 201, and the gap between the end faces of the socket 101 and the plug 102 and the end faces of the pipe body 1 is 20-40mm, which is used for overlapping the welding strip, and the baffle is used to provide a reaction force for the pipe body 1.

[0037] Specifically, the pushing assembly 3 includes a telescopic structure 302 and a push plate 303 . The telescopic structure 302 is disposed at the end of the second support frame 301 and corresponds to the axial direction of the pipe body 1 . The push plate 303 is fixed to the telescopic end of the telescopic structure 302 .

[0038] In this embodiment, the telescopic structure 302 is a telescopic cylinder, and the push plate 303 is a circular plane adapted to the end surface of the pipe body 1, which is fixed to the telescopic end of the telescopic structure 302 by bolts.

[0039] Specifically, the push plate 303 is parallel to the end surface of the pipe body 1 , and the area of ​​the push plate 303 is larger than the port area of ​​the pipe body 1 .

[0040] In this embodiment, the push plate 303 is compatible with pipe bodies 1 of different calibers.

[0041] Specifically, the two extruders 4 are respectively arranged at the connection between the socket 101 or the plug 102 and the pipe body 1 .

[0042] In this embodiment, the two preheated extruders 4 are started simultaneously to extrude the welding strip, which is then inserted into the gap between the socket 101 and the plug 102, and the drive motor 203 is started immediately. When the accumulation of the welding strip reaches a certain level, the two extruders 4 are stopped and the welding strip is cut off.

[0043] Specifically, the two extruders 4 are diagonally arranged on both sides of the pipe body 1. In this embodiment, the diagonally arranged extruders 4 can ensure that the winding direction of the welding strip is consistent to ensure the welding quality.

[0044] In this embodiment, the welding strip is evenly wrapped around the sides of the socket 101 and the plug 102, and then the socket 101 and the plug 102 are pressed into the two ends of the pipe body 1. After the welding strip is completely cooled, the pipe body 1 and the socket 101 and the plug 102 are integrated to ensure the welding strength.

[0045] Embodiment 2:

[0046] This embodiment is similar to Embodiment 1, except that, in this embodiment, Figure 3 As shown, the roller 202 is connected to a driven gear 205 , and the output end of the driving motor 203 is provided with a driving gear 204 , and the driven gears 205 on the two rollers 202 are respectively meshed with the driving gear 204 .

[0047] In this embodiment, the roller 202 is coaxially connected with a transmission gear, and the transmission gear of each roller 202 is respectively meshed with a driven gear 205, and the two driven gears 205 are then meshed with a driving gear 204 of a driving motor 203. The rotation speed of the roller 202 can be adjusted by the driven gear 205.

[0048] Embodiment 3:

[0049] This embodiment is similar to Embodiment 1, except that, in this embodiment, a driven pulley is coaxially fixed on the roller 202, a driving pulley is provided at the output end of the drive motor 203, and a transmission belt is installed between the driven pulley and the driving pulley.

[0050] Embodiment 4:

[0051] This embodiment is similar to the embodiment 1, except that, in this embodiment, the two pushing components 3 are respectively disposed at two ends of the pipe body 1 and are arranged opposite to each other.

[0052] In this embodiment, the socket 101 and the plug 102 are pressed into the pipe body 1 simultaneously by the two pushing components 3 .

[0053] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

[0054] Obviously, the above embodiments of the present invention are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A welding device for the socket of a HDPE inner rib wrapped pipe, characterized in that: The invention comprises a rolling assembly (2), a pushing assembly (3) and an extruder (4); a pipe body (1) with a socket (101) or a plug (102) inserted at the axial end is placed on the rolling assembly (2); the extruder (4) is arranged at the end of the pipe body (1) and is used to extrude a welding strip toward the connection between the socket (101) or the plug (102) and the pipe body (1); the pushing assembly (3) is arranged at the axial end of the pipe body (1) and is used to push the socket (101) or the plug (102) into the pipe body (1).

2. A welding device for the socket of a HDPE inner rib wrapped pipe according to claim 1, characterized in that: The rolling assembly (2) comprises a first support frame (201), a rolling structure and a driving motor (203); the rolling structure is rotatably connected to the first support frame (201); the driving motor (203) is mounted on the first support frame (201) and connected to the rolling structure for driving the rolling structure to rotate.

3. A welding device for the socket of a HDPE inner rib wrapped pipe according to claim 2, characterized in that: The rolling structure comprises two rollers (202) arranged parallel to each other, the two ends of the two rollers (202) are respectively rotatably connected to the first support frame (201), the two rollers (202) are respectively connected to the driving motor (203) via a transmission structure, the gap between the two rollers (202) is smaller than the diameter of the pipe body (1), and the pipe body (1) is placed side by side between the two rollers (202).

4. A welding device for the socket of a HDPE inner rib wound pipe according to claim 3, characterized in that: A driven gear (205) is mounted on the roller (202), a driving gear (204) is disposed at the output end of the driving motor (203), and the driven gears (205) on the two rollers (202) are respectively meshed with the driving gear (204).

5. A welding device for the socket of a HDPE inner rib wound pipe according to claim 2, characterized in that: The two pushing components (3) are respectively arranged at two ends of the pipe body (1).

6. A welding device for the socket of a HDPE inner rib wound pipe according to claim 2, characterized in that: The pushing component (3) is arranged at one end of the tubular body (1), and the other end of the tubular body (1) is provided with a baffle corresponding to the pushing component (3), and the area of ​​the baffle is larger than the port area of ​​the tubular body (1).

7. A welding device for the socket of a HDPE inner rib wrapped pipe according to any one of claims 1, 5 and 6, characterized in that: The pushing assembly (3) comprises a telescopic structure (302), a push plate (303) and a second support frame (301); the telescopic structure (302) is arranged on the second support frame (301) and is arranged corresponding to the axial direction of the pipe body (1); and the push plate (303) is fixed to the telescopic end of the telescopic structure (302).

8. A welding device for the socket of a HDPE inner rib wound pipe according to claim 7, characterized in that: The push plate (303) is parallel to the end surface of the pipe body (1), and the area of ​​the push plate (303) is larger than the port area of ​​the pipe body (1).

9. A welding device for the socket of a HDPE inner rib wound pipe according to claim 1, characterized in that: The two extruders (4) are respectively arranged at the connection between the socket (101) or the plug (102) and the pipe body (1).

10. A welding device for the socket of a HDPE inner rib wound pipe according to claim 9, characterized in that: The two extruders (4) are arranged diagonally on both sides of the pipe body (1).

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