A pipe hot-press welding fixture

Abstract

This invention provides a pipe hot-press welding fixture, belonging to the field of pipe welding technology. It includes a base, with a fixed mold and a fixed box fixedly connected to both ends of the top of the base. Horizontal shafts are symmetrically fixed between the fixed mold and the fixed box. A first moving mold and two second moving molds are slidably connected to the two horizontal shafts. Each of the fixed mold, the first moving mold, and the second moving molds is equipped with a locking ring and a two-drive assembly, which drives the two second moving molds to move. This invention uses an angle adjustment component to adapt the support angle according to the actual tilt angle of the pipe, replacing the rigid fixed support structure of existing hot-melt butt welding machines. This effectively avoids gravity shift or deformation caused by the lack of adaptive support when the pipe is tilted due to its high material flexibility, ensuring that the pipe joints to be welded are always accurately aligned. This prevents uneven stress on the pipe and uneven heating of the molten area during welding, significantly improving the sealing performance of the pipe.

Description

Technical Field

[0001] This utility model relates to the field of pipeline welding technology, and in particular to a pipeline hot-press welding fixture. Background Technology

[0002] PE pipe heat fusion connection is a standardized welding equipment designed for PE pipes. With its precise adaptation to the melting characteristics of PE material, it has become the core tool for connecting PE pipe systems and is widely used in municipal water supply and drainage, gas transmission, agricultural irrigation, chemical fluid transmission and other fields.

[0003] In actual installation scenarios, PE pipes are often welded at an angle due to terrain and construction space limitations, rather than in an ideal horizontal or vertical position. However, the support structure of existing hot melt welding machines is mostly a rigid fixed design, and the support angle cannot be flexibly adjusted according to the actual angle of inclination of the PE pipe. Due to the high flexibility of PE pipe material, if there is no suitable support angle when it is tilted, the pipe is prone to displacement or deformation due to its own weight, resulting in the welding joint not being accurately aligned. This not only causes uneven stress on the pipe during welding, but also causes uneven heating of the molten area at the joint, leading to defects such as gaps and incomplete welds in the weld joint, which greatly reduces the sealing performance of the PE pipe. Especially in the scenario of gas and chemical fluid transportation, it may cause safety accidents such as media leakage. Therefore, this application provides a pipe hot press welding fixture to meet the requirements. Utility Model Content

[0004] The purpose of this utility model is to provide a pipe hot-press welding fixture to solve the above-mentioned problems, thus solving the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A pipe hot-press welding fixture includes a base, with a fixed mold and a fixed box fixedly connected to the top two ends of the base, respectively. A horizontal shaft is symmetrically fixedly connected between the fixed mold and the fixed box. A first moving mold and two second moving molds are slidably connected on the two horizontal shafts. A locking ring and a two-drive assembly are installed on the fixed mold, the first moving mold, and the second moving mold. The drive assembly is used to drive the two second moving molds to move. The drive assembly is connected to the base and the fixed box, and a two-angle adjustment assembly is used to adjust the angle between the base and the ground. The angle adjustment assembly is connected to the base and the base plate.

[0007] Optionally, the drive assembly includes a fixed base fixed on the machine base, a motor fixedly connected to the top of the fixed base, a drive pulley fixedly connected to the output end of the motor, two lead screws symmetrically rotatably connected to one side of the fixed box, a driven pulley fixedly connected to the outer side of one of the lead screws, and the drive pulley and the driven pulley are connected by a synchronous belt drive.

[0008] Optionally, the fixed box is symmetrically rotatably connected with a connecting pulley, a transmission pulley, and a tensioning pulley, which are connected by a synchronous belt drive. One end of the other lead screw extends into the fixed box and is fixed to the connecting pulley.

[0009] Optionally, a connecting member is symmetrically fixed between the two second moving molds, and the two connecting members are respectively threaded to the corresponding lead screw.

[0010] Optionally, the angle adjustment assembly includes a first fixed shaft fixed on the base, a connecting part symmetrically rotatably connected to the outer side of the first fixed shaft, the connecting part being fixedly connected to the base, and two hydraulic push rods symmetrically rotatably connected to the inner side of the base, the telescopic ends of the two hydraulic push rods being rotatably connected to the inner wall of the base.

[0011] Optionally, a second fixed shaft is fixedly connected to the end of the base away from the first fixed shaft, and a third fixed shaft is fixedly connected to the end of the base away from the connecting part. A hook is movably connected to the outer side of the third fixed shaft, and the hook is hooked to the second fixed shaft.

[0012] Optionally, the fixed mold, the first moving mold, and the second moving mold are all symmetrically rotatably connected with joint screws. The rod part of the joint screw is inserted into the inside of the retaining ring, and the joint screw is externally threaded with a nut, and the nut abuts against the top wall of the retaining ring.

[0013] Optionally, the bottom of the buckle is symmetrically provided with overlapping portions, and the overlapping portions are inserted into the interior of the joint screw.

[0014] Optionally, a fixing plate is symmetrically fixedly connected to the outside of the fixed mold, and one end of the fixing plate is fixedly connected to the first moving mold.

[0015] Compared with the prior art, this utility model has at least the following beneficial effects:

[0016] In the above solution, the angle adjustment component can adapt the support angle according to the actual tilt angle of the pipeline, replacing the rigid fixed support structure of the existing hot melt butt welding machine. This effectively avoids gravity shift or deformation caused by the lack of adaptive support when the pipeline is tilted due to its high material flexibility, ensuring that the pipeline joints to be welded are always accurately aligned. This prevents uneven stress on the pipeline and uneven heating of the molten area at the joint during welding, significantly improving the sealing performance of the pipeline.

[0017] The overall ring clamping design formed by the fixed mold, the first moving mold, the second moving mold, and the retaining ring ensures that the pipe is clamped without loosening or displacement, solving the problem of pipe deformation or displacement caused by the poor clamping effect of existing equipment. At the same time, different specifications of clamping plates can be installed on the threaded holes of the fixed mold, the first moving mold, the second moving mold, and the retaining ring. Combined with the spacing adjustment function of the detachable first moving mold, the tooling can be adapted to pipes of different diameters and lengths, eliminating the need for frequent equipment or clamp replacements. This improves construction efficiency and avoids welding errors caused by mismatched clamps.

[0018] The dual-screw synchronous transmission design in the drive assembly ensures that the two screws rotate at the same speed, and then drives the two second moving molds to slide synchronously along the horizontal axis through the connecting parts, so that the ends of the pipes to be welded are connected smoothly and at a uniform speed, avoiding the problems of pipe misalignment and uneven pressure on the interface caused by the unstable synchronous movement of existing equipment. Attached Figure Description

[0019] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present invention and, together with the specification, further serve to explain the principles of the present invention and enable those skilled in the art to implement and use the present invention.

[0020] Figure 1 Schematic diagram of the three-dimensional structure of the pipe hot-press welding fixture Figure Two

[0021] Figure 2 This is a schematic diagram of the drive mechanism of this utility model. Figure Two

[0022] Figure 3 Schematic diagram of the usage status of pipe hot-press welding fixture Figure Two

[0023] Figure 4 This is a schematic diagram showing the connection between the first moving mold and the retaining ring.

[0024] Figure label:

[0025] 1. Base 2 101, First Fixed Shaft 2 102, Second Fixed Shaft 2 2, Base 2 201, Connecting Part 2 202, Third Fixed Shaft 2 203, Hook 2 204, Hydraulic Push Rod 2 3, Fixed Mold 2 301, Fixed Plate 2 4, Fixed Box 2 5, Horizontal Shaft 2 6, First Moving Mold 2 7, Second Moving Mold 2 8, Buckle 2 801, Overlapping Part 2 9, Joint Screw 2 10, Nut 2 11, Fixed Seat 2 12, Motor 2 13, Driving Pulley 2 14, Lead Screw 2 15, Driven Pulley 2 16, Connecting Part 2 17, Connecting Pulley 2 18, Transmission Pulley 2 19, Tensioner.

[0026] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiment of this utility model. However, this is only for illustrative purposes and is not intended to limit this utility model to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0027] The following is a detailed description of a pipe hot-press welding fixture provided by this utility model, in conjunction with the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some known technologies, those skilled in the art can also use other alternative methods to implement the invention. Furthermore, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit this utility model.

[0028] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0029] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0030] It is understood that the meanings of “on”, “above”, and “above” in this utility model should be interpreted in the broadest manner, such that “on” not only means “directly on” something, but also includes something with an intervening feature or layer, and that “above” or “above” not only means “on” something, but also includes something “above” something without an intervening feature or layer.

[0031] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0032] like Figures 1 to 4As shown, an embodiment of this utility model provides a pipe hot-press welding fixture, including a base 1. A fixed mold 3 and a fixed box 4 are fixedly connected to the top two ends of the base 1, respectively. Horizontal shafts 5 are symmetrically fixed between the fixed mold 3 and the fixed box 4. A first moving mold 6 and two second moving molds 7 are slidably connected on the two horizontal shafts 5. A retaining ring 8 is installed on each of the fixed mold 3, the first moving mold 6, and the second moving mold 7. A joint screw 9 is symmetrically rotatably connected inside each of the fixed mold 3, the first moving mold 6, and the second moving mold 7. The rod body of the joint screw 9 is inserted into the retaining ring 8. A nut 10 is threaded onto the outside of the joint screw 9, and the nut 10 abuts against the top wall of the retaining ring 8. A lap portion 801 is symmetrically provided at the bottom of the retaining ring 8, and the lap portion 801 is inserted into the inside of the joint screw 9. The retaining ring 8 can cooperate with the fixed mold 3, the first moving mold 6, and the second moving mold 7 to form an integral annular ring for fixing the pipe. The lap portion 801 improves the stability of the assembled annular ring. To prevent misalignment of the retaining ring 8 during pipe connection, the joint screw 9 and nut 10 ensure the stability of the retaining ring 8 after installation. The joint screw 9 is non-removable, which not only improves installation efficiency but also prevents parts loss. Threaded holes are provided in the fixed mold 3, the first moving mold 6, the second moving mold 7, and the retaining ring 8 to facilitate the subsequent installation of clamping plates to accommodate pipes of different diameters. The fixed mold 3 is symmetrically fixedly connected to a fixing plate 301. One end of the fixing plate 301 is fixedly connected to the first moving mold 6. The first moving mold 6 is detachable and can be replaced with different lengths according to usage requirements, thereby controlling the distance between the fixed mold 3 and the first moving mold 6 and ensuring the stability of the pipe after installation. A drive component is used to move the two second moving molds 7. The drive component is connected to the base 1 and the fixed box 4. An angle adjustment component is used to adjust the angle between the base 1 and the ground. The angle adjustment component is connected to the base 1 and the base 2.

[0033] In this embodiment, as Figure 1 and Figure 2As shown, the drive assembly includes a fixed base 11 fixed on the base 1. A motor 12 is fixedly connected to the top of the fixed base 11. A drive pulley 13 is fixedly connected to the output end of the motor 12. Two lead screws 14 are symmetrically rotatably connected to one side of the fixed housing 4. A driven pulley 15 is fixedly connected to the outer side of one of the lead screws 14. The drive pulley 13 and the driven pulley 15 are connected by a synchronous belt drive. A connecting pulley 17, a transmission pulley 18, and a tensioning pulley 19 are symmetrically rotatably connected inside the fixed housing 4. The connecting pulley 17, the transmission pulley 18, and the tensioning pulley 19 are connected by a synchronous belt drive. One end of the other lead screw 14 extends to the fixed base 1. The box 4 is fixed inside the connecting pulley 17. Connecting parts 16 are symmetrically fixed between the two second moving molds 7. The two connecting parts 16 are threaded to the corresponding lead screws 14. The motor 12 drives the driving pulley 13 and the driven pulley 15 to rotate. Under the transmission of the connecting pulley 17 and the transmission pulley 18, the two lead screws 14 can be driven to rotate synchronously. In turn, the connecting parts 16 can drive the two second moving molds 7 to slide on the horizontal shaft 5, thereby adjusting the distance between the second moving mold 7 and the first moving mold 6, so that the ends of the two pipes can be connected. Under the action of the tensioning wheel 19, the tensioning effect of the synchronous belt can be ensured, thus ensuring the power transmission effect.

[0034] In this embodiment, such as 2 and Figure 3 As shown, the angle adjustment assembly includes a first fixed shaft 101 fixed on the base 1. A connecting part 201 is symmetrically rotatably connected to the outer side of the first fixed shaft 101. The connecting part 201 is fixedly connected to the base 2. Two hydraulic push rods 204 are symmetrically rotatably connected to the inner side of the base 1. The telescopic ends of both hydraulic push rods 204 are rotatably connected to the inner wall of the base 2. A second fixed shaft 102 is fixedly connected to the end of the base 1 away from the first fixed shaft 101. A third fixed shaft 102 is fixedly connected to the end of the base 2 away from the connecting part 201. The third fixed shaft 202 has a hook 203 movably connected to its outer side, and the hook 203 is hooked to the second fixed shaft 102. By extending and retracting the hydraulic push rod 204, the machine base 1 can be driven to rotate on the base 2, thereby adjusting the overall angle of the equipment so that the tooling can adapt to the inclined pipes caused by different drops. The hook 203 is provided with a through hole, which allows the hook 203 to move on the third fixed shaft 202, so as to facilitate the hook part of the hook 203 to be engaged or disengaged from the second fixed shaft 102.

[0035] The working principle of this utility model:

[0036] Adjusting the overall angle of the fixture using the angle adjustment component: The operator first disconnects the hook 203 from the second fixed shaft 102, and uses the through hole on the hook 203 to allow the hook 203 to move outside the third fixed shaft 202, thus separating it from the second fixed shaft 102. Then, the hydraulic push rod 204 is activated. The telescopic end of the hydraulic push rod 204 drives the base 1 to rotate around the first fixed shaft 101 above the base 2. After the base 1 is adjusted to a position that matches the actual inclination angle of the pipe, the hydraulic push rod 204 is stopped. After the angle adjustment is completed, the pipe is clamped and fixed: according to the... To accommodate different pipe diameters during welding, clamping plates of the corresponding specifications can be installed in the threaded holes of the fixed mold 3, the first moving mold 6, the second moving mold 7, and the retaining ring 8. Then, the two pipes to be welded are placed in the clamping areas between the fixed mold 3 and the first moving mold 6, and between the first moving mold 6 and the second moving mold 7, respectively. The joint screw 9 is rotated so that the overlapping part 801 of the retaining ring 8 is inserted into the joint screw 9. At this point, the retaining ring 8, the fixed mold 3, the first moving mold 6, and the second moving mold 7 cooperate to form a fixed annular ring for the pipes. Finally, the nut 10 on the outside of the joint screw 9 is tightened so that the nut 10 abuts against the top wall of the retaining ring 8, completing the process of securing the retaining ring 8. The pipes are fixed in place, thus firmly clamping them within the annular ring. The overlapping part 801 effectively prevents misalignment of the retaining ring 8 during pipe connection. After the pipes are fixed, the second moving mold 7 is moved by the drive assembly to achieve precise connection of the two pipes: the starter motor 12 drives the drive pulley 13 to rotate, and the drive pulley 13 drives the driven pulley 15 to rotate via a synchronous belt drive. A lead screw 14 is fixedly connected to the driven pulley 15. At the same time, the connecting pulley 17, transmission pulley 18, and tensioning pulley 19 inside the fixing box 4 transmit power to the other lead screw 14 via a synchronous belt drive, realizing the connection of the two lead screws. The synchronous rotation of the screw 14 is achieved by connecting the two second moving molds 7 symmetrically fixed with the corresponding screw 14. When the screw 14 rotates synchronously, the connecting piece 16 drives the two second moving molds 7 to slide along the horizontal axis 5, adjusting the distance between the second moving mold 7 and the first moving mold 6. As the second moving mold 7 moves, the pipe it holds gradually moves closer to the pipe held by the first moving mold 6 until the ends of the two pipes are precisely connected, preparing for subsequent hot melt welding. The tensioning wheel 19 ensures that the synchronous belt is always in a taut state, ensuring stable power transmission and avoiding displacement deviation during pipe connection.

[0037] This utility model encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this utility model. To provide the public with a thorough understanding of this utility model, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand this utility model even without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of this utility model, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0038] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A pipe hot-press welding fixture, characterized in that, The system includes a base (1), with a fixed mold (3) and a fixed box (4) fixedly connected to the top two ends of the base (1), and horizontal shafts (5) symmetrically fixed between the fixed mold (3) and the fixed box (4). A first moving mold (6) and two second moving molds (7) are slidably connected on the two horizontal shafts (5). Each of the fixed mold (3), the first moving mold (6), and the second moving molds (7) is equipped with a retaining ring (8). The drive assembly is used to move two second moving modules (7), and the drive assembly is connected to the base (1) and the fixed box (4). An angle adjustment component is used to adjust the angle between the base (1) and the ground. The angle adjustment component is connected to the base (1) and the base (2).

2. The pipe hot-press welding fixture according to claim 1, characterized in that, The drive assembly includes a fixed base (11) fixed on the base (1), a motor (12) fixedly connected to the top of the fixed base (11), a drive pulley (13) fixedly connected to the output end of the motor (12), two lead screws (14) symmetrically rotatably connected to one side of the fixed box (4), a driven pulley (15) fixedly connected to the outer side of one of the lead screws (14), and the drive pulley (13) and the driven pulley (15) are connected by a synchronous belt drive.

3. The pipe hot-press welding fixture according to claim 2, characterized in that, The fixed box (4) is symmetrically rotatably connected to a connecting pulley (17), a transmission pulley (18), and a tensioning pulley (19). The connecting pulley (17), the transmission pulley (18), and the tensioning pulley (19) are connected by a synchronous belt drive. One end of another lead screw (14) extends into the fixed box (4) and is fixed to the connecting pulley (17).

4. The pipe hot-press welding fixture according to claim 3, characterized in that, Two second moving molds (7) are symmetrically fixedly connected with connecting parts (16), and the two connecting parts (16) are respectively threadedly connected to the corresponding lead screws (14).

5. The pipe hot-press welding fixture according to claim 1, characterized in that, The angle adjustment assembly includes a first fixed shaft (101) fixed on the base (1). A connecting part (201) is symmetrically rotatably connected to the outer side of the first fixed shaft (101). The connecting part (201) is fixedly connected to the base (2). Two hydraulic push rods (204) are symmetrically rotatably connected to the inner side of the base (1). The telescopic ends of the two hydraulic push rods (204) are rotatably connected to the inner wall of the base (2).

6. The pipe hot-press welding fixture according to claim 5, characterized in that, The base (1) is fixedly connected to a second fixed shaft (102) at one end away from the first fixed shaft (101), and the base (2) is fixedly connected to a third fixed shaft (202) at one end away from the connecting part (201). A hook (203) is movably connected to the outside of the third fixed shaft (202), and the hook (203) is hooked to the second fixed shaft (102).

7. The pipe hot-press welding fixture according to claim 1, characterized in that, The fixed mold (3), the first moving mold (6), and the second moving mold (7) are all symmetrically rotatably connected with joint screws (9). The rod part of the joint screw (9) is inserted into the buckle (8). The joint screw (9) is threaded with a nut (10) on the outside, and the nut (10) abuts against the top wall of the buckle (8).

8. The pipe hot-press welding fixture according to claim 7, characterized in that, The bottom of the buckle (8) is symmetrically provided with an overlapping part (801), and the overlapping part (801) is inserted into the inside of the joint screw (9).

9. The pipe hot-press welding fixture according to claim 1, characterized in that, The fixed mold (3) is symmetrically fixedly connected to a fixing plate (301) on the outside, and one end of the fixing plate (301) is fixedly connected to the first moving mold (6).

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