Large-section pipeline butt joint device and method thereof

Abstract

The invention provides a large-section pipeline butt-joint device and method, and belongs to the technical field of pipeline butt-joint devices.The butt-joint forming device comprises a movable base, a clamping bottom piece is arranged on the left side of the top face of the movable base, a clamping top piece is vertically arranged above the clamping bottom piece in an aligned mode, and a butt-joint hot-pressing mechanism is longitudinally arranged in the middle of the top face of the movable base; in addition, the butt-joint hot-pressing mechanism is formed through the structural combination design of the distance-adjusting moving end, the longitudinal base set, the rotating mechanism, the hot-pressing assembly and the motor, the distance-adjusting moving end on the butt-joint hot-pressing mechanism has a left-right transverse displacement function, and the hot-pressing assembly can be easily aligned to the triangular groove of the first pipeline; according to the technical scheme, transverse stretching and retracting of the first pipeline do not need to be adjusted to be aligned with the hot-pressing assembly, operation is more labor-saving and easy, in addition, the hot-pressing assembly further has the stretching extrusion molding function and the hot-melting softening function, and the molding effect of the triangular protruding edge of the large-section pipeline is better through the mode that extrusion molding is conducted after hot-melting softening is conducted.

Description

Technical Field

[0001] The invention relates to a large-section pipeline butt joint device and a method thereof, belonging to the technical field of pipeline butt joint devices. Background Art

[0002] The construction method of steel-reinforced polyethylene spiral corrugated pipe has the advantages of high ring stiffness, convenient connection, and low cost. It has been widely used in underground drainage and sewage projects in the fields of municipal construction. When constructing spiral corrugated pipes, it is often necessary to solve problems such as improving the airtightness of the pipeline and accurately positioning the pipeline. Since steel-reinforced polyethylene spiral corrugated pipes are used in drainage and sewage projects, the diameter of the pipeline is relatively large, and the large-section pipe of the pipe body will adopt a large cross-section. If direct sleeve installation is adopted, there is no way to reinforce the locking ring, and it can only be simply applied with sealant during sleeve installation. Therefore, it is easy to cause sealing leakage during construction and moving. In view of the above shortcomings, the present invention proposes a large-section pipeline docking device and method. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention aims to provide a large-section pipe docking device and method thereof to solve the existing problems.

[0004] In order to achieve the above-mentioned purpose, the present invention is realized by the following technical scheme: a large-section pipe docking device, the structure of which includes a pipe, and the inner sleeve and the outer sleeve are respectively arranged at the head and tail ends of the pipe, when the inner sleeve and the outer sleeve on the two pipes are to be docked, they are hot-melt sealed and pressed together by a docking molding device, the docking molding device includes a moving seat, and a clamping bottom piece is arranged on the left side of the top surface of the moving seat, and a clamping top piece is arranged vertically and aligned above the clamping bottom piece, a docking hot pressing mechanism is longitudinally arranged in the middle of the top surface of the moving seat, a horizontal push bottom piece is arranged on the right side of the top surface of the moving seat, and a horizontal push top piece is arranged horizontally above the horizontal push bottom piece; The docking hot pressing mechanism includes a distance-adjustable movable end, and a longitudinal seat group is vertically arranged on the top surface of the distance-adjustable movable end, and a rotating mechanism is movably hung on the front side of the longitudinal seat group, and a hot pressing component is arranged in a circular manner in the middle cavity of the rotating mechanism, and the other end of the hot pressing component extends and is fixedly connected to the upper side of the rotating mechanism, and a motor is meshed on the right side of the top surface of the rotating mechanism, and the motor is fixedly connected to the longitudinal seat group; When the motor drives the rotating mechanism on the vertical seat assembly to rotate each time, the hot pressing component rotates and changes direction by an angle of 20-45 degrees.

[0005] A further improvement is that the clamping base comprises a fixed base, and a bottom clamping pad sleeve is arranged on the top surface of the fixed base, and a bottom clamping pad is embedded on the top surface of the bottom clamping pad sleeve, a lower arc-shaped clamping opening is opened on the top surface of the bottom clamping pad, and the bottom clamping pad is made of rubber.

[0006] A further improvement is that the clamping top piece includes a fixed bracket, and the upper end of the fixed bracket is vertically threadedly connected to the first screw adjusting piece, and the lower end of the first screw adjusting piece is provided with a lower pressure seat, and a stabilizing slide rod is vertically provided at the front end of the top surface of the lower pressure seat, and the other end of the stabilizing slide rod passes through the fixed bracket, and a top clamping pad vertically aligned with the bottom clamping pad is provided on the bottom surface of the lower pressure seat, an upper arc-shaped clamping opening is provided on the bottom surface of the top clamping pad, and the top clamping pad is made of rubber.

[0007] A further improvement is that the longitudinal seat assembly includes a longitudinal seat body, a circular sleeve cavity is opened in the middle of the longitudinal seat body, and a first opening for discharging is opened on the right side of the circular sleeve cavity, a plurality of supporting rollers are arranged at annular intervals on the front circumference of the circular sleeve cavity, and a motor opening is opened on the right side of the upper end of the longitudinal seat body; Each of the supporting roller components comprises a roller body, a V-shaped groove is provided in the middle of the outer peripheral surface of the roller body, and a bearing is nested on the left side of the roller body.

[0008] A further improvement is that the rotating mechanism includes a circular turntable, and a second opening for discharging is provided on the right side of the circular turntable, and a plurality of mounting seats are arranged at intervals on the inner ring surface of the circular turntable, a slip ring for movably hanging with each supporting roller member is arranged on the rear side of the circular turntable, an annular rack is arranged on the outer ring surface of the circular turntable, and a driving gear meshing with the annular rack is arranged on the motor; The slip ring is composed of an annular seat and a sliding piece. The lower end of the sliding piece is provided with a V-shaped sliding edge that is movably engaged with the V-shaped groove. The sliding piece is made of high manganese steel.

[0009] A further improvement is that the hot pressing assembly includes a plurality of hot melt extrusion ends sequentially mounted on respective mounting seats, and an air inlet pipe is connected in series between the respective hot melt extrusion ends, and a hot air generator is connected to the tail end of the air inlet pipe.

[0010] A further improvement is that each of the hot melt extrusion ends includes a first retractor, and a heat insulation seat is provided at the lower end of the first retractor, and a hot pressing forming block is provided at the lower end of the heat insulation seat, an arc-shaped pressing edge is opened at the lower end of the hot pressing forming block, a heating plate is provided on one side of the hot pressing forming block, a drying nozzle is provided on the front side of the heat insulation seat, the hot pressing forming block is made of copper, and the cross-section of the arc-shaped pressure edge is an inverted triangle.

[0011] As a further improvement, the transverse pushing bottom member comprises a transverse pushing base, and an arc-shaped slide groove is provided on the top surface of the transverse pushing base, and a plurality of rows of supporting pulleys are arranged at arc-shaped intervals on the groove wall of the arc-shaped slide groove.

[0012] A further improvement is that the horizontal pushing member includes a horizontal pushing bracket, and a second telescope is horizontally arranged on the horizontal pushing bracket, and a slide is vertically arranged on the left end of the second telescope, a push beam is movable sleeved in the left slide groove of the slide, and a second screw adjustment member is vertically arranged on the top surface of the push beam, and the upper end of the second screw adjustment member is threadedly connected to the slide, an arc-shaped push seat is arranged at the lower end of the left side surface of the push beam, and a plurality of push blocks are arranged at intervals on the left side of the arc-shaped push seat, and each of the push blocks is made of rubber.

[0013] A further improvement is that the pipe is a steel-reinforced polyethylene spiral corrugated pipe, and a triangular groove is provided on the inner sleeve on one side of the pipe, and a sealing ring is provided inside the triangular groove. When the butt-jointing forming device hot-melt-extrudes the outer sleeve to form a triangular convex edge, a locking ring is also provided on the triangular convex edge.

[0014] A further improvement is that the cross-sectional thickness of the outer sleeve head is 0.5-0.8 mm.

[0015] As a further improvement, the first screw adjusting member, the second screw adjusting member, the distance adjusting movable end and the hot air generator are all existing technologies, and their structures are not described one by one here.

[0016] In addition, the present invention also provides a method for the above-mentioned large-section pipe docking device, the method is as follows: First, a triangular groove must be generated when the inner sleeve is formed, and when the two pipes are butt-jointed, the sealing ring is placed in the triangular groove; Then, place one side of the first pipe with the inner sleeve on the fixed base, and the inner sleeve needs to pass through the middle of the docking hot pressing mechanism, and then the first pipe is clamped and fixed by lowering the clamping top piece through thread twisting, and then the adjustable moving end on the docking hot pressing mechanism is horizontally shifted left and right to make each arc pressure edge vertically aligned with the triangular groove position, completing the clamping and alignment of the first pipe; Then, place the side of the second pipe with the outer sleeve on the horizontal push base, and twist the threads to make the push blocks on the horizontal push top piece drop down to press against the right side of the raised part on the top of the second pipe. Then, extend the second retractor to the right to push the second pipe to slide to the left on the horizontal push base, so that the outer sleeve and the inner sleeve can be fitted together, thus completing the preliminary alignment and pressing fitting of the two first pipes. Then, each hot-melt extrusion end on the hot-pressing mechanism is connected to blow hot air to soften the surface of the outer jacket head, and then the heated arc-shaped pressing edge is driven to extrude the surface of the outer jacket head softened by the hot-melt through the first retractor to form a triangular convex edge engaged with the triangular groove. To form a complete circle of the triangular convex edge, each arc-shaped pressing edge on the hot-pressing mechanism needs to be rotated in multiple directions to perform multiple heating and extrusion to complete the molding of the complete circle of the triangular convex edge. Finally, by adjusting the first opening and the second opening to be in a communicating state, the two butted pipes can be taken out from the butt-jointed hot pressing mechanism, and a locking ring can be put on the outer side of the triangular convex edge for reinforcement.

[0017] The beneficial effects of the present invention are: The present invention provides a large-section pipe docking device and method thereof. A docking forming device is formed by a structural combination design of a movable seat, a clamping bottom piece, a clamping top piece, a docking hot pressing mechanism, a horizontal pushing bottom piece, and a horizontal pushing top piece. When docking two pipes, the device first softly clamps and fixes the first pipe through the cooperation of the clamping bottom piece and the clamping top piece, and then pushes the second pipe to the left to fit with the first pipe through the cooperation of the horizontal pushing bottom piece and the horizontal pushing top piece, thereby making the initial docking and fitting of the two pipes very simple.

[0018] In addition, the docking hot pressing mechanism is composed of a structural combination design of a distance-adjustable movable end, a longitudinal seat group, a rotating mechanism, a hot pressing component, and a motor. The distance-adjustable movable end on this mechanism has a left and right lateral displacement function, which can easily align the hot pressing component with the triangular groove of the first pipe. There is no need to adjust the lateral extension and contraction of the first pipe to align the hot pressing component, and the operation is more labor-saving and simple. In addition, the hot pressing component also has an extending extrusion molding function and a hot melt softening function. The molding effect of the triangular convex edge of the large-section pipe is better by first hot melt softening and then extrusion molding.

[0019] In addition, the cooperation of the longitudinal seat group, the rotating mechanism and the motor can realize the angular rotation of the hot pressing component, so that the triangular convex edge can be hot-melt extruded to form a complete circle to engage with the triangular groove, thereby sealing the sealing ring in all directions. The concave and convex joints of the two pipes are used for better sealing, and a locking ring is also installed to prevent the sealing of the two pipes from loosening during construction and moving. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the docking forming device of the present invention; Figure 2 It is a left view of the clamping bottom piece and the clamping top piece of the present invention; Figure 3 It is a right view of the butt-jointing hot pressing mechanism of the present invention; Figure 4 It is a schematic diagram of the structure of the vertical seat group of the present invention; Figure 5 It is a schematic diagram of the structure of the rotating mechanism of the present invention; Figure 6 It is a schematic diagram of the structure of the hot pressing assembly of the present invention; Figure 7 This is a diagram showing the effect of the support roller and the slip ring of the present invention; Figure 8This is a left side view of the horizontal push bottom member of the present invention; Fig. 9 This is a schematic diagram of the structure of the horizontal pusher of the present invention; Fig.10 This is a diagram showing the docking effect of two pipelines of the present invention. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0022] See also Figure 1-Figure 10 The present invention provides a large-section pipe docking device: its structure includes a pipe 1, and the inner sleeve 11 and the outer sleeve 12 are respectively arranged at the head and tail ends of the pipe 1. When the inner sleeves 11 and the outer sleeves 12 on the two pipes 1 are to be docked, they are hot-melt sealed and pressed together through a docking molding device. The docking molding device includes a moving seat 2, and a clamping bottom piece 3 is arranged on the left side of the top surface of the moving seat 2, and a clamping top piece 4 is arranged vertically and aligned above the clamping bottom piece 3. A docking hot pressing mechanism 5 is longitudinally arranged in the middle of the top surface of the moving seat 2, and a horizontal push bottom piece 6 is arranged on the right side of the top surface of the moving seat 2. There is a horizontal push ejector 7, the docking hot pressing mechanism 5 includes a distance-adjustable movable end 51, and a longitudinal seat group 52 is vertically arranged on the top surface of the distance-adjustable movable end 51, and a rotating mechanism 53 is movably hung on the front side of the longitudinal seat group 52, and a hot pressing assembly 54 is arranged in a ring in the middle cavity of the rotating mechanism 53, and the other end of the hot pressing assembly 54 extends and is fixedly connected to the upper side of the rotating mechanism 53, and a motor 55 is meshed on the right side of the top surface of the rotating mechanism 53, and the motor 55 is fixedly connected to the longitudinal seat group 52. When the motor 55 drives the rotating mechanism 53 on the longitudinal seat group 52 for each rotation, the hot pressing assembly 54 is rotated and changed direction by an angle of 20-45°.

[0023] The clamping base 3 includes a fixed base 31, and a bottom clamping pad sleeve 32 is arranged on the top surface of the fixed base 31, and a bottom clamping pad 33 is embedded on the top surface of the bottom clamping pad sleeve 32. A lower arc-shaped clamping opening 34 is opened on the top surface of the bottom clamping pad 33, and the bottom clamping pad 33 is made of rubber.

[0024] The clamping top member 4 includes a fixed bracket 41, and the upper end of the fixed bracket 41 is vertically threadedly connected to the first screw adjusting member 42, and the lower end of the first screw adjusting member 42 is provided with a lower pressure seat 43, and the front end of the top of the lower pressure seat 43 is vertically provided with a stabilizing slide rod 44, and the other end of the stabilizing slide rod 44 passes through the fixed bracket 41, and the bottom surface of the lower pressure seat 43 is provided with a top clamping pad 45 vertically aligned with the bottom clamping pad 33, and the bottom surface of the top clamping pad 45 is provided with an upper arc-shaped clamping opening 46, and the top clamping pad 45 is made of rubber.

[0025] The longitudinal seat assembly 52 includes a longitudinal seat body 521, and a circular sleeve cavity 522 is opened in the middle of the longitudinal seat body 521, and a first opening 523 for discharging is opened on the right side of the circular sleeve cavity 522, and a plurality of supporting roller members 524 are arranged at annular intervals on the front side periphery of the circular sleeve cavity 522, and a motor opening 525 is opened on the right side of the upper end of the longitudinal seat body 521, and each of the supporting roller members 524 includes a roller body 5241, and a V-shaped groove 5242 is opened in the middle of the outer peripheral surface of the roller body 5241, and a bearing 5243 is nested on the left side of the roller body 5241.

[0026] The rotating mechanism 53 includes a circular turntable 531, and a second opening 532 for discharging is provided on the right side of the circular turntable 531, and a plurality of mounting seats 533 are arranged at intervals on the inner ring surface of the circular turntable 531. A slip ring 534 for movably engaging with each supporting roller member 524 is provided on the rear side of the circular turntable 531. An annular rack 535 is provided on the outer ring surface of the circular turntable 531. A driving gear meshing with the annular rack 535 is provided on the motor 55. The slip ring 534 is composed of an annular seat 5341 and a sliding member 5342. A V-shaped sliding edge 5343 for movably engaging with the V-shaped groove 5242 is provided at the lower end of the sliding member 5342. The sliding member 5342 is made of high manganese steel.

[0027] The hot pressing assembly 54 includes a plurality of hot melt extrusion ends 541 sequentially mounted on the mounting seats 533 , and an air inlet pipe 542 is connected in series between the hot melt extrusion ends 541 , and a hot air generator 543 is connected to the tail end of the air inlet pipe 542 .

[0028] Each of the hot melt extrusion ends 541 includes a first retractor 5411, and a heat insulating seat 5412 is provided at the lower end of the first retractor 5411, and a hot pressing forming block 5413 is provided at the lower end of the heat insulating seat 5412, and an arc-shaped pressing edge 5414 is opened at the lower end of the hot pressing forming block 5413, a heating plate 5415 is provided on one side of the hot pressing forming block 5413, and a drying nozzle 5416 is provided on the front side of the heat insulating seat 5412. The hot pressing forming block 5413 is made of copper, and the cross-section of the arc-shaped pressing edge 5414 is in the shape of an inverted triangle.

[0029] The transverse pushing bottom member 6 comprises a transverse pushing base 61 , and an arc-shaped slide groove 62 is formed on the top surface of the transverse pushing base 61 , and a plurality of rows of supporting pulleys 63 are arranged at arc-shaped intervals on the groove wall of the arc-shaped slide groove 62 .

[0030] The horizontal push member 7 includes a horizontal push bracket 71, and a second telescope 72 is horizontally arranged on the horizontal push bracket 71, and a slide seat 73 is vertically arranged on the left end of the second telescope 72, a push beam 74 is movably sleeved in the left slide groove of the slide seat 73, and a second screw adjustment member 75 is vertically arranged on the top surface of the push beam 74, and the upper end of the second screw adjustment member 75 is threadedly connected to the slide seat 73, an arc-shaped push seat 76 is arranged at the lower end of the left side surface of the push beam 74, and a plurality of push blocks 77 are arranged at intervals on the left side of the arc-shaped push seat 76, and each of the push blocks 77 is made of rubber.

[0031] Working principle: First, the triangular groove 13 needs to be generated synchronously when the inner sleeve 11 is formed, and when the two pipes 1 are butt-jointed, the sealing ring 14 is sleeved in the triangular groove 13 .

[0032] Then, the side of the first pipe 1 with the inner sleeve 11 is placed on the fixed base 31, and the inner sleeve 11 needs to pass through the middle of the docking hot pressing mechanism 5, and then the first pipe 1 is clamped and fixed by lowering the clamping top member 4 through thread twisting, and then the adjustable moving end 51 on the docking hot pressing mechanism 5 is horizontally shifted left and right to make each arc-shaped pressing edge 5414 vertically aligned with the triangular groove 13 position, and the first pipe 1 is clamped, fixed and aligned; The torsional clamping top piece 4 is lowered by manually twisting the first screw adjusting piece 42, and under the anti-rotation effect of the stabilizing slide bar 44, the bottom clamping pad 33 is vertically lowered, and finally the pipe body of the pipe 1 is pressed and fixed by pressing the lower arc clamping opening 34 and the upper arc clamping opening 46. The bottom clamping pad 33 and the top clamping pad 45 are both designed with rubber material, so that the clamping of the pipe body of the first pipe 1 is achieved in a soft resistance manner. In addition, the left and right lateral displacement of the adjustable moving end 51 is the cooperation of a conventional slider and a slide rail, which will not be further explained here.

[0033] Then, place the side of the second pipe 1 with the outer sleeve 12 on the horizontal push base 61, and make the push blocks 77 on the horizontal push top member 7 descend and press against the right side of the raised part on the top surface of the second pipe 1 by twisting the thread, and then push the second pipe 1 to slide leftward on the horizontal push base 61 by extending the second telescopic member 72 to the right, so that the outer sleeve 12 and the inner sleeve 11 are fitted together, and the preliminary alignment and pressing fitting of the two first pipes 1 is completed; The descent of each push block 77 is achieved by manually twisting the second screw adjusting member 75 to push against the right side of the raised portion of the top surface of the second pipe 1. When the second telescopic device 72 is pushed to the left, since the second pipe 1 is placed on the rows of supporting pulleys 63 of the horizontal pushing bottom member 6, only a small thrust is needed to make the second pipe 1 slide to the left. Moreover, each push block 77 is designed with rubber material, so that the horizontal pushing top member 7 pushes the upper end of the second pipe 1 in a flexible manner without damaging the surface of the second pipe 1.

[0034] Then, each hot-melt extrusion end 541 on the hot-pressing mechanism 5 is firstly blown with hot air to soften the surface of the outer jacket head 12, and then the heated arc-shaped pressing edge 5414 is driven to extrude the surface of the outer jacket head 12 softened by the hot-melt through the first retractor 5411 to form a triangular convex edge 15 engaged with the triangular groove 13 in multiple directions. To form a complete circle of the triangular convex edge 15, each arc-shaped pressing edge 5414 on the hot-pressing mechanism 5 needs to be rotated in multiple directions to perform multiple heating and extrusion to complete the molding of the complete circle of the triangular convex edge 15. When each hot melt extrusion end 541 first blows hot air to melt and soften the surface of the outer jacket head 12, it is achieved by conveying hot air to each drying nozzle 5416 together through the hot air generator 543. When the surface of the outer jacket head 12 is melted and softened, the first retractor 5411 can be driven down to drive the heated arc pressure edge 5414 to achieve extrusion, so that the extrusion and molding effect of the outer jacket head 12 will be better. Because the cross-sectional thickness of the outer jacket head 12 is a large cross-sectional area, it is very important to first use the drying nozzle 5416 to melt and soften. In addition, the method of forming the triangular convex edge 15 by extruding in multiple directions is mainly used to adapt to pipes 1 of different diameters. The motor 55 drives the rotating mechanism 53 on the vertical seat group 52 to rotate the hot pressing component 54 at an angle of 20-45° each time, which can adapt to the spacing after each arc-shaped pressing edge 5414 is extruded on the surface of the outer sleeve 12. Through multiple extrusions in different directions, the triangular convex edge 15 can be finally formed on the outer sleeve 12 of different specifications, so that the inner side of the triangular convex edge 15 can be completely stuck in the triangular groove 1 3 and completely press the sealing ring 14 to perform docking sealing. It should also be noted that when the diameter of the outer sleeve 12 is changed, it is only necessary to replace the arc-shaped pressure edges 5414 of different specifications, so that the curvature of the lower end of each arc-shaped pressure edge 5414 can adapt to the arc surface of the outer sleeve 12. In addition, the clamping bottom piece 3 and the horizontal pushing bottom piece 6 are also equipped with a vertical lifting structure, but they are all conventional technologies and will not be further explained here. In this way, no matter how the diameters of the inner sleeve 11 and the outer sleeve 12 are changed, they can be inserted into the center position between the hot-melt extrusion ends 541.

[0035] Finally, by adjusting the first opening 523 and the second opening 532 to be in a communicating state, the two butted pipes 1 can be taken out from the butt-jointing hot pressing mechanism 5, and a locking ring 16 is put on the outer side of the triangular convex edge 15 for reinforcement; By adopting the design of the first opening 523 and the second opening 532, the two pipes 1 can be detached after docking by moving the docking forming device forward or backward in situ, thereby reducing the movement of the two pipes 1 and preventing the docking point of the two pipes 1 from being loosened due to pulling.

[0036] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0037] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A large-section pipe docking device, the structure of which comprises a pipe (1), wherein the pipe (1) is provided with an inner sleeve (11) and an outer sleeve (12) at both ends thereof, respectively; when the inner sleeves (11) and the outer sleeves (12) on the two pipes (1) are to be docked, they are hot-melt sealed and pressed together by a docking molding device, characterized in that: the docking molding device comprises a movable seat (2), wherein a clamping bottom piece (3) is provided on the left side of the top surface of the movable seat (2), and a clamping top piece (4) is provided vertically aligned above the clamping bottom piece (3); a docking hot pressing mechanism (5) is longitudinally provided in the middle of the top surface of the movable seat (2), a horizontal push bottom piece (6) is provided on the right side of the top surface of the movable seat (2), and a horizontal push top piece (7) is provided horizontally above the horizontal push bottom piece (6); The docking hot pressing mechanism (5) comprises a distance-adjustable movable end (51), and a longitudinal seat group (52) is vertically arranged on the top surface of the distance-adjustable movable end (51), and a rotating mechanism (53) is movably hung on the front side of the longitudinal seat group (52), and a hot pressing assembly (54) is arranged in a circular pattern in the middle cavity of the rotating mechanism (53), and the other end of the hot pressing assembly (54) extends and is fixedly connected to the upper side of the rotating mechanism (53), and a motor (55) is meshed on the right side of the top surface of the rotating mechanism (53), and the motor (55) is fixedly connected to the longitudinal seat group (52); When the motor (55) drives the rotating mechanism (53) on the vertical seat assembly (52) to rotate each time, the hot pressing assembly (54) rotates and changes direction at an angle of 20-45 degrees.

2. A large cross-section pipe docking device according to claim 1, characterized in that: The clamping base (3) comprises a fixed base (31), and a bottom clamping pad sleeve (32) is arranged on the top surface of the fixed base (31), and a bottom clamping pad (33) is embedded on the top surface of the bottom clamping pad sleeve (32), and a lower arc-shaped clamping opening (34) is opened on the top surface of the bottom clamping pad (33), and the bottom clamping pad (33) is made of rubber.

3. A large cross-section pipe docking device according to claim 2, characterized in that: The clamping top member (4) comprises a fixed bracket (41), and the upper end of the fixed bracket (41) is vertically threadedly connected to a first screw adjusting member (42), and the lower end of the first screw adjusting member (42) is provided with a lower pressure seat (43), a stabilizing slide bar (44) is vertically provided at the front end of the top of the lower pressure seat (43), and the other end of the stabilizing slide bar (44) passes through the fixed bracket (41), and a top clamping pad (45) vertically aligned with the bottom clamping pad (33) is provided on the bottom surface of the lower pressure seat (43), and an upper arc-shaped clamping opening (46) is provided on the bottom surface of the top clamping pad (45), and the top clamping pad (45) is made of rubber.

4. A large cross-section pipe docking device according to claim 3, characterized in that: The longitudinal seat assembly (52) comprises a longitudinal seat body (521), a circular sleeve cavity (522) is provided in the middle of the longitudinal seat body (521), a first opening (523) for discharging materials is provided on the right side of the circular sleeve cavity (522), a plurality of supporting rollers (524) are provided at annular intervals on the front circumference of the circular sleeve cavity (522), and a motor opening (525) is provided on the right side of the upper end of the longitudinal seat body (521); Each of the supporting roller components (524) comprises a roller body (5241), a V-shaped groove (5242) is provided in the middle of the outer peripheral surface of the roller body (5241), and a bearing (5243) is embedded on the left side of the roller body (5241).

5. A large cross-section pipe docking device according to claim 4, characterized in that: The rotating mechanism (53) comprises a circular rotating disk (531), and a second opening (532) for discharging materials is provided on the right side of the circular rotating disk (531), and a plurality of mounting seats (533) are arranged at intervals on the inner ring surface of the circular rotating disk (531), a sliding ring (534) for movably engaging with each supporting roller member (524) is arranged on the rear side surface of the circular rotating disk (531), an annular rack (535) is arranged on the outer ring surface of the circular rotating disk (531), and a driving gear meshing with the annular rack (535) is arranged on the motor (55); The slip ring (534) is composed of an annular seat (5341) and a sliding member (5342). A V-shaped sliding edge (5343) that is movably engaged with the V-shaped groove (5242) is provided at the lower end of the sliding member (5342). The sliding member (5342) is made of high manganese steel.

6. A large cross-section pipe docking device according to claim 5, characterized in that: The hot pressing assembly (54) comprises a plurality of hot melt extrusion ends (541) which are sequentially mounted on respective mounting seats (533), and an air inlet pipe (542) is connected in series between the respective hot melt extrusion ends (541), and a hot air generator (543) is connected to the tail end of the air inlet pipe (542).

7. A large cross-section pipe docking device according to claim 6, characterized in that: Each of the hot melt extrusion ends (541) comprises a first retractor (5411), and a heat insulating seat (5412) is arranged at the lower end of the first retractor (5411), and a hot pressing forming block (5413) is arranged at the lower end of the heat insulating seat (5412), and an arc-shaped pressing edge (5414) is provided at the lower end of the hot pressing forming block (5413), a heating plate (5415) is arranged on one side of the hot pressing forming block (5413), and a drying nozzle (5416) is arranged on the front side of the heat insulating seat (5412), the hot pressing forming block (5413) is made of copper, and the cross-section of the arc-shaped pressing edge (5414) is in the shape of an inverted triangle.

8. A large cross-section pipe docking device according to claim 7, characterized in that: The horizontal push bottom member (6) comprises a horizontal push base (61), and an arc-shaped slide groove (62) is formed on the top surface of the horizontal push base (61), and a plurality of rows of supporting pulleys (63) are arranged at intervals in an arc shape on the groove wall of the arc-shaped slide groove (62).

9. A large cross-section pipe docking device according to claim 8, characterized in that: The horizontal push member (7) comprises a horizontal push bracket (71), and a second telescopic device (72) is horizontally arranged on the horizontal push bracket (71), and a slide seat (73) is vertically arranged at the left end of the second telescopic device (72), a push beam (74) is movably sleeved in a left slide groove of the slide seat (73), and a second screw adjustment member (75) is vertically arranged on the top surface of the push beam (74), and the upper end of the second screw adjustment member (75) is threadedly connected to the slide seat (73), an arc-shaped push seat (76) is arranged at the lower end of the left side surface of the push beam (74), and a plurality of push blocks (77) are arranged at intervals on the left side surface of the arc-shaped push seat (76), and each of the push blocks (77) is made of rubber.

10. A method for using a large-section pipe docking device according to any one of claims 1 to 9, characterized in that: Here’s how: First, a triangular groove (13) is generated synchronously when the inner sleeve (11) is formed, and when the two pipes (1) are butt-jointed, a sealing ring (14) is placed in the triangular groove (13); Then, the side of the first pipe (1) with the inner sleeve (11) is placed on the fixed base (31), and the inner sleeve (11) needs to pass through the middle of the docking hot pressing mechanism (5), and then the first pipe (1) is clamped and fixed by lowering the clamping top piece (4) through thread twisting, and then the adjustable moving end (51) on the docking hot pressing mechanism (5) is horizontally shifted left and right so that each arc-shaped pressing edge (5414) is vertically aligned with the position of the triangular groove (13), thereby completing the clamping, fixing and alignment of the first pipe (1); Then, the side of the second pipe (1) with the outer sleeve (12) is placed on the horizontal push base (61), and the respective push blocks (77) on the horizontal push top member (7) are lowered to press against the right side of the raised portion of the top surface of the second pipe (1) by twisting the thread, and then the second retractor (72) is extended to the right to push the second pipe (1) to slide leftward on the horizontal push base (61), so that the outer sleeve (12) and the inner sleeve (11) are fitted together, thereby completing the preliminary alignment and pressing fitting of the two first pipes (1); Then, each hot-melt extrusion end (541) on the hot-pressing mechanism (5) is first blown with hot air to melt and soften the surface of the outer jacket head (12), and then the heated arc-shaped pressing edge (5414) is driven downward by the first telescopic device (5411) to extrude the surface of the hot-melt softened outer jacket head (12) in multiple directions to form a triangular convex edge (15) that engages with the triangular groove (13). To form a complete circle of the triangular convex edge (15), each arc-shaped pressing edge (5414) on the hot-pressing mechanism (5) needs to be rotated in multiple directions to perform multiple heating and extrusions to complete the molding of the complete circle of the triangular convex edge (15); Finally, by adjusting the first opening (523) and the second opening (532) to be in a communicating state, the two butted pipes (1) can be taken out of the butt-jointed hot pressing mechanism (5), and a locking ring (16) can be put on the outer side of the triangular convex edge (15) for reinforcement.

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