A non-contact pipe hot melt welding machine

Abstract

This utility model discloses a non-contact pipe hot melt welding machine, including a base. A far-infrared heating plate is fixedly installed on the upper surface of the base. A fixing column is also fixedly installed on the upper surface of the base. An mounting ring is rotatably installed above the fixing column. A fixing disc is rotatably installed inside the mounting ring. A first ventilation ring pipe and a second ventilation ring pipe are fixedly installed on the outer surface of the fixing disc. The diameter of the second ventilation ring pipe is larger than that of the first ventilation ring pipe. A grinding zone is formed between the first and second ventilation ring pipes. Multiple second spring grinding blocks are fixedly installed on the outer surface of the first ventilation ring pipe, and multiple first spring grinding blocks are fixedly installed on the inner surface of the second ventilation ring pipe. Through the setting of the fixing disc, grinding zone, first spring grinding blocks, and second spring grinding blocks, the end face of the pipe is ground, removing the oxide layer and contaminants from the end face, reducing the bonding strength, and simultaneously improving the flatness of the pipe end face, greatly improving the welding quality.

Description

Technical Field

[0001] This utility model belongs to the technical field of non-contact pipe hot melt welding machine, and particularly relates to a non-contact pipe hot melt welding machine.

[0002] Background Technology

[0003] Non-contact pipe hot melt welding machines achieve pipe connection through radiation heating, avoiding material contamination or surface damage caused by traditional contact heating. Its core principle is to use radiation sources such as infrared rays or electromagnetic waves to heat the pipe end face, and then apply pressure to bond after reaching the melting temperature. It is suitable for welding thermoplastic pipes such as HDPE, PPH, and PVDF.

[0004] In the prior art, Chinese utility model patent No. 202221046419.7 discloses a non-contact pipe hot-melt welding machine, which includes: a clamp, comprising a fixed clamp and a movable clamp, the movable clamp being able to reciprocate relative to the fixed clamp, used to clamp two pipe sections and control the welding overlap distance; a milling cutter assembly, located on one side of the clamp, including a cutter disc that can extend between the two pipe sections, used to mill the end face of the pipe section to be welded flat; and a heating assembly, located on one side of the clamp, including a far-infrared heating plate that can be moved to the welding position, used for non-contact hot-melt welding of the two pipe sections. The aforementioned non-contact pipe hot-melt welding machine fills the gap in the market for PVDF / PFA pipe welding equipment, while also being compatible with the welding requirements of PP pipes. After setting the welding parameters, it can automatically execute the process steps to complete the non-contact welding of the pipe sections, avoiding material corrosion and contamination of the welding area, and extending the service life of the equipment.

[0005] In existing technologies, non-contact welding of pipe fittings can be completed using clamps and heating components, avoiding material corrosion and contamination of the welding area. However, there are still some shortcomings in overall use:

[0006] First, when two pipes are hot-melt welded, there will be an oxide layer or contaminants on the end face of the pipes. If they are not removed, they will form an isolation layer during the melting process, which will reduce the weld bonding strength and make it easy for interface separation or incomplete welding to occur.

[0007] Secondly, if there are dents or burrs on the end face of the pipe, the flatness of the end face is not high, resulting in uneven heat distribution and large differences in the thickness of the molten layer, which will reduce the tensile strength of the pipe. At the same time, the uneven end face will form an irregular weld contour after welding, which will greatly reduce the welding quality. Utility Model Content

[0008] To overcome the shortcomings of existing technologies, this invention provides a non-contact pipe hot-melt welding machine. This invention solves the technical problem that contaminants and oxide layers on the pipe end face lead to a decrease in weld bonding strength. Furthermore, it addresses the technical problem that uneven pipe end faces result in irregular weld contours, leading to reduced weld quality.

[0009] To achieve the above objectives, this utility model provides the following technical solution: a non-contact pipe hot melt welding machine, comprising a base, an infrared heating plate fixedly mounted on the upper surface of the base, a fixing column fixedly mounted on the upper surface of the base, an mounting ring rotatably mounted above the fixing column, a fixing disc rotatably mounted inside the mounting ring, a first ventilation ring pipe and a second ventilation ring pipe fixedly mounted on the outer surface of the fixing disc, the diameter of the second ventilation ring pipe being larger than the diameter of the first ventilation ring pipe, a grinding area being formed between the first and second ventilation ring pipes for grinding the end face of the pipe, a plurality of second spring grinding blocks fixedly mounted on the outer surface of the first ventilation ring pipe, a plurality of first spring grinding blocks fixedly mounted on the inner surface of the second ventilation ring pipe, and a plurality of air nozzles being provided on the opposite surfaces of the first and second ventilation ring pipes.

[0010] In the aforementioned non-contact pipe hot melt welding machine, a support rod is rotatably installed at the top of the fixed column, one end of the support rod is fixed to the side of the mounting ring, and limit blocks are fixedly installed on both sides of the top of the fixed column.

[0011] In the aforementioned non-contact pipe hot melt welding machine, an internal gear ring is fixedly installed on the outer side of the fixed plate, and an installation groove is provided in the middle of the base. A gear that meshes with the internal gear ring is rotatably installed inside the installation groove.

[0012] In the aforementioned non-contact pipe hot melt welding machine, a fan is fixedly installed on the lower surface of the base, the fixed plate is hollow, the first ventilation ring pipe and the second ventilation ring pipe are connected to the fixed plate, and the air outlet end of the fan is connected to a duct, which is connected to the outer surface of the second ventilation ring pipe.

[0013] In the aforementioned non-contact pipe hot melt welding machine, two slide rails are fixedly installed on the upper surface of the base, and two sets of symmetrically arranged fixing components are slidably installed on the upper surface of the slide rails.

[0014] In the aforementioned non-contact pipe hot melt welding machine, the fixing component includes a support plate that slides on the upper surface of the slide rail. The two ends of the support plate are plate-shaped, and the middle part of the support plate is arc-shaped.

[0015] In the aforementioned non-contact pipe hot melt welding machine, a pressure plate is symmetrically arranged above the support plate, and fastening screws are threaded between the two ends of the support plate and the pressure plate.

[0016] In the aforementioned non-contact pipe hot melt welding machine, a bracket is also fixedly installed on the upper surface of the base, a knob is threaded on the top of the bracket, and a scraper is rotatably installed on the bottom of the knob.

[0017] In summary, compared with the prior art, the non-contact pipe hot melt welding machine provided by this utility model has the following beneficial effects:

[0018] 1. This utility model, through the setting of a fixed plate, a grinding area, a first spring grinding block and a second spring grinding block, grinds the end faces of two pipes, removes the oxide layer and contaminants from the end faces, avoids contamination of the fusion surface, improves the bonding strength, and at the same time improves the flatness of the pipe end faces, greatly improving the welding quality.

[0019] 2. This utility model, through the setting of a first ventilation ring pipe, a second ventilation ring pipe, a fan and air nozzles, can blow away the smoke and dust generated during pipe grinding, prevent dust from sticking to the surface of the pipe, ensure the cleanliness of the pipe exterior, and greatly improve the grinding and dust removal effect. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a top view of the structure of this utility model;

[0022] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure at point AA;

[0023] Figure 4 for Figure 1 Enlarged structural diagram at point B in the diagram;

[0024] Figure 5 for Figure 3 Enlarged structural diagram at point C;

[0025] Figure 6 This is a side view of the structure of this utility model;

[0026] Figure 7 for Figure 6 A magnified structural diagram at point D in the diagram.

[0027] In the diagram: Base 10; Support leg 11; Controller 12; Far-infrared heating plate 13; Slide rail 14; Cylinder 15; Support plate 16; Pressure plate 17; Fastening screw 18; Fixing column 19; Support rod 20; Limiting block 21; Mounting ring 22; Fixing plate 23; Fixing disc 24; First ventilation ring pipe 25; Second ventilation ring pipe 26; Grinding area 27; First spring grinding block 28; Second spring grinding block 29; Internal gear ring 30; Mounting groove 31; Motor 32; Gear 33; Fan 34; Air nozzle 35; Bracket 36; Knob 37; Scraper 38. Detailed Implementation

[0028] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Example 1:

[0029] refer to Figure 1 A non-contact pipe hot melt welding machine includes a base 10, a controller 12 fixedly installed on the upper surface of the base 10, a support leg 11 fixedly installed on the lower surface of the base 10, and a far-infrared heating plate 13 fixedly installed in the middle of the upper surface of the base 10. The far-infrared heating plate 13 is existing technology and will not be described in detail in this solution. It is used to heat the pipe for hot melt welding.

[0030] Further reference Figure 1 Two slide rails 14 are fixedly installed on the upper surface of the base 10. Two sets of symmetrically arranged fixing components are slidably installed on the upper surface of the slide rails 14. The fixing components include a support plate 16 that slides on the upper surface of the slide rails 14. The two ends of the support plate 16 are plate-shaped and slide in fit on the upper surface of the slide rails 14. The middle part is arc-shaped to fit the shape of the pipe and facilitate the placement of the pipe. A pressure plate 17 is arranged symmetrically above the support plate 16. The two ends of the support plate 16 and the pressure plate 17 are fixed by fastening screws 18. In use, the pipe is placed on the upper surface of the support plate 16, and then the pressure plate 17 is placed on the upper surface of the pipe. Finally, the pressure plate 17 and the support plate 16 are connected by fastening screws 18. The fastening screws 18 are rotated to press the pressure plate 17 onto the pipe, fixing and limiting the pipe to be welded. The threaded installation is simple to operate and easy to disassemble and assemble, which greatly improves the performance.

[0031] Furthermore, participate in Figure 1 Cylinders 15 are fixedly installed on both sides of the upper surface of the base 10. The output end of the cylinder 15 is fixed to the bottom of the support plate 16. After the two pipes are fixed, the controller 12 can control the cylinder 15 to drive the support plate 16 to move in the center, thereby moving the two pipes in the center to complete the docking. Through electric control, the distance of pipe docking can be precisely controlled, thereby improving the quality of pipe welding.

[0032] Further reference Figure 1 , Figure 4 , Figure 6 and Figure 7 A fixing post 19 is fixedly installed in the middle of the upper surface of the base 10. A support rod 20 is rotatably installed at the top of the fixing post 19. An installation ring 22 is fixedly installed at one end of the support rod 20. A fixing plate 23 is fixedly installed in the middle of the installation ring 22. Fixing discs 24 inside the installation ring 22 are rotatably installed on both sides of the middle of the fixing plate 23. Limiting blocks 21 are fixedly installed on both sides of the top of the fixing post 19. In the initial state, the fixing discs 24 are located on the outside of the base 10 and are supported by the limiting blocks 21. After the pipes are fixed, the support rod 20 can be rotated so that the fixing discs 24 are located in the middle of the opposite ends of the two pipes and are supported by the limiting blocks 21 on the other side.

[0033] Further reference Figure 2 , Figure 3 and Figure 5 A first ventilation ring pipe 25 and a second ventilation ring pipe 26 are fixedly installed on the outer surface of the fixed plate 24. The interiors of the first ventilation ring pipe 25 and the second ventilation ring pipe 26 are both hollow, allowing air to circulate between them. The diameter of the second ventilation ring pipe 26 is larger than that of the first ventilation ring pipe 25. A grinding area 27 is formed between the first ventilation ring pipe 25 and the second ventilation ring pipe 26. A plurality of second spring grinding blocks 29 are fixedly installed on the outer surface of the first ventilation ring pipe 25, and a plurality of first spring grinding blocks 28 are fixedly installed on the inner surface of the second ventilation ring pipe 26. In use, the two positioned pipes are moved in the center until the pipes abut against the grinding area 27. The first spring grinding blocks 28 abut against the outer surface of the pipes, and the second spring grinding blocks 29 abut against the inner surface of the pipes.

[0034] Further reference Figure 3 and Figure 5 The base 10 has a mounting groove 31 in the middle, and a motor 32 is fixedly installed inside the mounting groove 31. A gear 33 is fixedly installed at the output end of the motor 32. An internal gear ring 30 is fixedly installed on the outer surface of the fixed plate 24. The gear 33 and the internal gear ring 30 mesh with each other. When in use, the motor 32 drives the gear 33 to rotate. Since the gear 33 meshes with the internal gear ring 30, the gear 33 drives the fixed plate 24 to rotate. When the fixed plate 24 rotates, the opposite ends of the two pipes are polished through the polishing area 27 to remove surface impurities, dust and stains from the ends, avoid contaminating the welding surface, reduce the bonding strength, and thus improve the welding quality of the pipes. At the same time, the use of the first spring polishing block 28 and the second spring polishing block 29 can remove the aging layer on both sides of the pipe opening, further enhancing the welding effect. Example 2:

[0035] A non-contact pipe hot melt welding machine, based on Embodiment 1, is further illustrated in Example 3 and... Figure 5 The fixed plate 24 is hollow, and the first ventilation ring pipe 25 and the second ventilation ring pipe 26 are connected to the fan 34. The fan 34 is fixedly installed on the lower surface of the base 10. The air outlet of the fan 34 is connected to a duct, which is connected to the outer surface of the second ventilation ring pipe 26. Multiple air nozzles 35 are provided on the opposite surfaces of the second ventilation ring pipe 26 and the first ventilation ring pipe 25. The multiple air nozzles 35 are located between pairs of first spring grinding blocks 28 and pairs of second spring grinding blocks 29. When grinding the pipe, the fan 34 works to introduce air into the fixed plate 24 and spray it out through the air nozzles 35. Since the air nozzles 35 are in the gaps between the first spring grinding blocks 28 and the second spring grinding blocks 29, they can blow away the dust generated during the grinding of the pipe, preventing it from sticking to the surface of the pipe and re-contaminating the pipe, thus greatly improving the grinding and dust removal effect. Example 3:

[0036] A non-contact pipe hot melt welding machine, further exemplified based on Embodiment 1 and Embodiment 2, is described below. Figure 1 and Figure 3 A bracket 36 is fixedly installed on the upper surface of the base 10. A knob 37 is threaded onto the top of the bracket 36 and passes through the bracket 36. A scraper 38 is rotatably installed at the bottom of the bracket 36. After the pipe is heat-fused together, the limit on the pipe is released. Then, the knob 37 is rotated, which drives the scraper 38 to move downward, so that the scraper 38 abuts against the weld joint of the pipe, thereby limiting the rotation of the tube sheet 38. The tube sheet 38 is made of heat-resistant rubber material. After the pipe is connected, it is pre-cooled. Before the pipe opening is completely cooled and shaped, the operator can rotate the pipe to make the scraper 38 rotate. Since the scraper 38 abuts against the joint, the joint can be trimmed to improve the appearance of the pipe.

[0037] The specification and claims use certain terms to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0038] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes said element.

[0039] The foregoing description illustrates and describes several preferred embodiments of this application. However, as previously stated, it should be understood that this application is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the application concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this application should be within the protection scope of the appended claims.

Claims

1. A non-contact pipe hot melt welding machine, comprising a base (10), characterized in that, An infrared heating plate (13) is fixedly installed on the upper surface of the base (10). A fixing column (19) is also fixedly installed on the upper surface of the base (10). An installation ring (22) is rotatably installed above the fixing column (19). A fixing plate (24) is rotatably installed inside the installation ring (22). A first ventilation ring pipe (25) and a second ventilation ring pipe (26) are fixedly installed on the outer surface of the fixing plate (24). The diameter of the second ventilation ring pipe (26) is larger than the diameter of the first ventilation ring pipe (25). A grinding area (27) is formed between the first ventilation ring pipe (25) and the second ventilation ring pipe (26) for grinding the end face of the pipe. A plurality of second spring grinding blocks (29) are fixedly installed on the outer surface of the first ventilation ring pipe (25). A plurality of first spring grinding blocks (28) are fixedly installed on the inner surface of the second ventilation ring pipe (26). A plurality of air nozzles (35) are provided on the opposite surfaces of the first ventilation ring pipe (25) and the second ventilation ring pipe (26).

2. The non-contact pipe hot melt welding machine according to claim 1, characterized in that, A support rod (20) is rotatably mounted on the top of the fixed column (19). One end of the support rod (20) is fixed to the side of the mounting ring (22). Limiting blocks (21) are fixedly mounted on both sides of the top of the fixed column (19).

3. The non-contact pipe hot melt welding machine according to claim 1, characterized in that, An internal gear ring (30) is fixedly installed on the outer side of the fixed plate (24), and an installation groove (31) is provided in the middle of the base (10). A gear (33) that meshes with the internal gear ring (30) is rotatably installed inside the installation groove (31).

4. The non-contact pipe hot melt welding machine according to claim 1, characterized in that, A fan (34) is fixedly installed on the lower surface of the base (10). The fixed plate (24) is hollow. The first ventilation ring pipe (25) and the second ventilation ring pipe (26) are connected to the fixed plate (24). The air outlet of the fan (34) is connected to a duct, which is connected to the outer surface of the second ventilation ring pipe (26).

5. A non-contact pipe hot melt welding machine according to claim 4, characterized in that, Two slide rails (14) are fixedly installed on the upper surface of the base (10), and two sets of symmetrically arranged fixing components are slidably installed on the upper surface of the slide rails (14).

6. A non-contact pipe hot melt welding machine according to claim 5, characterized in that, The fixing component includes a support plate (16) that slides on the upper surface of the slide rail (14). The two ends of the support plate (16) are plate-shaped, and the middle part of the support plate (16) is arc-shaped.

7. A non-contact pipe hot melt welding machine according to claim 6, characterized in that, A pressure plate (17) is provided above the support plate (16) and is symmetrically arranged therewith. Fastening screws (18) are threaded between the two ends of the support plate (16) and the pressure plate (17).

8. A non-contact pipe hot melt welding machine according to claim 5, characterized in that, A bracket (36) is also fixedly installed on the upper surface of the base (10). A knob (37) is threaded on the top of the bracket (36), and a scraper (38) is rotatably installed on the bottom of the knob (37).

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