Ultrahigh-pressure anti-permeation internal welding and external injection molding connection process and device for hydrogen conveying pipeline

Abstract

The invention relates to the technical field of pipeline machining, and discloses an ultrahigh-pressure anti-permeation internal welding and external injection molding connecting process and device for a hydrogen conveying pipeline, which solve the problem that the pipeline machining efficiency is influenced as the pipeline needs to be repeatedly positioned and clamped. The ultrahigh-pressure anti-permeation internal welding and external injection molding connecting device comprises a first machining table and a second machining table, the first machining table is provided with a splicing structure matched with the second machining table, a translation seat is arranged above the first machining table, the first machining table is provided with a translation piece used for driving the translation seat to translate, the top of the second machining table is fixedly connected with a lower injection mold, and an upper injection mold is arranged above the lower injection mold. The second machining table is provided with a lifting unit used for driving the upper injection mold to ascend and descend. A rotating seat is arranged on one side, facing the lower injection mold, of the translation seat; and the pipeline does not need to be repeatedly positioned and clamped, so that the pipeline can be conveniently transferred from a welding station to an injection molding station, and the processing efficiency of the pipeline is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of pipeline processing, and specifically relates to an ultra-high pressure anti-permeability internal welding and external injection molding connection process and device for hydrogen transmission pipelines. Background Art

[0002] A hydrogen pipeline is a specially designed pipeline system for transporting hydrogen. As hydrogen becomes increasingly important as a clean energy source, hydrogen pipelines play a key role in hydrogen energy infrastructure. Hydrogen pipelines are an indispensable part of hydrogen energy utilization and supply chain, and their design, construction, and maintenance require a high degree of expertise and technical support. In the processing of hydrogen pipelines, welding is a common processing technology. After welding, the exterior of the pipeline generally needs to be processed by injection molding to achieve the purpose of flame retardant protection. However, it is worth considering that before welding, the pipe fittings need to be positioned and clamped. After welding, the pipe needs to be released and then positioned and clamped by a robot. The fixed pipe is transferred to the preset injection molding station by the robot. The pipe needs to be positioned and clamped repeatedly, which affects the processing efficiency of the pipe.

[0003] Therefore, in order to solve the above problems, a related facility that better meets the usage requirements is needed. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides an ultra-high pressure anti-permeability internal welding and external injection molding connection process and device for hydrogen transmission pipelines, which effectively solves the problem in the above background technology that the pipeline needs to be repeatedly positioned and clamped, affecting the pipeline processing efficiency.

[0005] To achieve the above object, the present invention provides the following technical solutions: An ultra-high pressure anti-permeability internal welding and external injection molding connection device for a hydrogen transmission pipeline comprises a first processing table and a second processing table, wherein the first processing table is provided with a splicing structure adapted to the second processing table, a translation seat is provided above the first processing table, a translation member for driving the translation seat to translate is provided on the first processing table, a lower injection mold is fixedly connected to the top of the second processing table, an upper injection mold is provided above the lower injection mold, and a lifting unit for driving the upper injection mold to lift is provided on the second processing table; A rotating seat is provided on the side of the translation seat facing the lower injection mold, and the translation seat is equipped with a rotator for driving the rotating seat to rotate. A support shaft is provided on the side of the rotating seat facing the lower injection mold, and the support shaft is equipped with a positioning and clamping mechanism for positioning and clamping the pipe. The rotating seat is equipped with a sliding support assembly adapted to the support shaft.

[0006] Preferably, the translation member includes at least one mounting plate fixedly mounted on the top of the first processing table, the mounting plate is fixedly mounted with a first hydraulic telescopic rod, and the telescopic end of the first hydraulic telescopic rod is fixedly connected to the translation seat.

[0007] Preferably, the rotator includes a first rotating shaft rotatably mounted on the translation seat, the first rotating shaft is fixedly connected to the rotating seat, a servo motor is fixedly mounted on the translation seat, and an output end of the servo motor is fixedly connected to the first rotating shaft.

[0008] Preferably, the lifting unit includes a fixing frame fixedly mounted on the top of the second processing table, at least one second hydraulic telescopic rod is fixedly mounted on the fixing frame, and the telescopic end of the second hydraulic telescopic rod is fixedly connected to the top of the upper injection mold.

[0009] Preferably, the sliding support assembly includes a movable seat fixedly mounted on the support shaft, a base plate is provided below the movable seat, the base plate and the rotating seat are fixedly connected, two guide columns are fixedly connected to the top of the base plate, the top ends of the guide columns penetrate the movable seat, a top plate is provided on the top of the movable seat, and the top ends of the guide columns are fixedly connected to the bottom of the top plate, and the bottom of the movable seat and the top of the base plate are connected by a number of compression springs.

[0010] Preferably, the two sides of the movable seat are respectively fixedly connected with first support parts, the bottom contact of the first support part is provided with a stop block, and the rotating seat is installed with a toggle unit adapted to the stop block.

[0011] Preferably, the toggle unit includes a support frame fixedly mounted on the top of the rotating seat, the support frame is rotatably connected to a second rotating shaft, the stop block and the second rotating shaft are connected by a fixed plate, the external fixed sleeve of the second rotating shaft is provided with a gear, the support frame is fixedly mounted with a third hydraulic telescopic rod, the telescopic end of the third hydraulic telescopic rod is fixedly connected with a toothed plate, and the toothed plate and the gear are meshed.

[0012] Preferably, the positioning and clamping mechanism includes a fixed plate fixedly mounted on the support shaft, the fixed plate is provided with a plurality of grooves, a positioning plate is slidably arranged in the grooves, the positioning plate is provided with a sliding groove, a sliding plate is slidably arranged in the sliding groove, one end of the sliding plate is fixedly connected to the inner wall of the groove, the other end of the sliding plate is connected to the inner wall of the sliding groove by a plurality of first tension springs, a second support part is fixedly connected to the side of the positioning plate away from the lower injection mold, a sliding seat is provided on the external sliding sleeve of the support shaft, a plurality of protrusions are fixedly mounted on the sliding seat, and the number of the protrusions and the second support part is the same, an inclined surface matching the protrusions is provided on the second support part, two fourth hydraulic telescopic rods are fixedly mounted on the support shaft, and the telescopic end of the fourth hydraulic telescopic rod is fixedly connected to the sliding seat.

[0013] Preferably, the splicing structure includes at least one fixed ring fixedly mounted on the top of the first processing table, a plug plate passes through the fixed ring, a limiting hole is provided at one end of the plug plate, and the other end of the plug plate is fixedly connected to the second processing table through a connecting plate, a movable plate is provided below the plug plate, and the movable plate is located below the first processing table, the top of the movable plate is fixedly connected to the limiting plate, the limiting plate passes through the first processing table, the top of the limiting plate is located in the limiting hole, the movable plate and the bottom of the first processing table are connected by a plurality of second tension springs, a pressing seat is provided above the movable plate, a plurality of fifth hydraulic telescopic rods are fixedly mounted on the first processing table, and the telescopic end of the fifth hydraulic telescopic rod is fixedly connected to the bottom of the pressing seat, and at least four supporting legs are fixedly connected to the bottoms of the first processing table and the second processing table, and universal wheels are fixedly connected to the bottom ends of the supporting legs.

[0014] The present invention also provides a process for connecting a hydrogen transmission pipeline by ultra-high pressure anti-permeability internal welding and external injection molding, using the above-mentioned ultra-high pressure anti-permeability internal welding and external injection molding connecting device for hydrogen transmission pipeline, comprising the following steps: Step 1: The pipe to be processed is positioned and clamped by the positioning and clamping mechanism, the rotating seat is driven to rotate by the rotator, and the rotating seat drives the support shaft and the pipe to rotate synchronously through the sliding support assembly, and the worker welds the rotating pipe with a handheld welding gun; Step 2: After welding is completed, the translation seat is driven to translate by the translation member, and the translation seat drives the pipeline to move between the lower injection mold and the upper injection mold; Step 3: The upper injection mold is driven downward by the lifting unit, and the sliding support assembly drives the support shaft to move downward synchronously relative to the rotating seat, and the pipeline moves downward synchronously with the upper injection mold, and finally the upper injection mold and the lower injection mold are molded together; Step 4: The outside of the pipe is injection molded by the lower injection mold and the upper injection mold. When the injection molding is completed, the upper injection mold is driven to move up to the initial height by the lifting unit, and the rotating seat drives the support shaft and the pipe to move up to the initial height through the sliding support assembly. The pipe is separated from the lower injection mold and the upper injection mold, and the welding and injection molding of the pipe are completed.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The pipe to be processed is positioned and clamped by the positioning and clamping mechanism, and the rotating seat is driven to rotate by the rotator. The rotating seat drives the support shaft and the pipe to rotate synchronously through the sliding support assembly. The staff welds the rotating pipe with a handheld welding gun. When the welding is completed, the translation seat is driven to translate by the translation member, and the translation seat drives the pipe to move between the lower injection mold and the upper injection mold. The upper injection mold is driven to move downward by the lifting unit. When the upper injection mold contacts the pipe, as the upper injection mold continues to move downward, the sliding support assembly drives the support shaft to slide down synchronously relative to the rotating seat, and the pipe is It moves downward synchronously with the upper injection mold, and finally the upper injection mold and the lower injection mold complete the mold closing, and the outer part of the pipe is injection molded by the lower injection mold and the upper injection mold. When the injection molding is completed, the upper injection mold is driven to move up to the initial height by the lifting unit, and the rotating seat drives the support shaft and the pipe to move up to the initial height through the sliding support assembly. The pipe is separated from the lower injection mold and the upper injection mold, and the welding and injection molding of the pipe can be completed. There is no need to repeatedly position and clamp the pipe, which is convenient for transferring the pipe from the welding station to the injection molding station, thereby improving the processing efficiency of the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0017] In the attached picture: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 A local enlarged schematic diagram of the middle A; Figure 3 It is a schematic diagram of the structure of the fixed ring, the insert plate and the limit plate separated in the present invention; Figure 4 It is a structural schematic diagram of the rotator of the present invention; Figure 5 It is a structural schematic diagram of the rotating seat of the present invention; Figure 6 It is a schematic diagram of the structure of the movable seat, guide column and top plate separated from each other in the present invention; Figure 7 It is a structural schematic diagram of the support shaft of the present invention; Figure 8 It is a schematic diagram of the structure of the separated slide plate and the positioning plate of the present invention.

[0018] In the figure: 1, first processing table; 2, second processing table; 3, translation seat; 4, support shaft; 5, rotating seat; 6, lower injection mold; 7, upper injection mold; 8, mounting plate; 9, first hydraulic telescopic rod; 10, first rotating shaft; 11, servo motor; 12, fixed frame; 13, second hydraulic telescopic rod; 14, movable seat; 15, bottom plate; 16, guide column; 17, top plate; 18, compression spring; 19, first supporting part; 20, supporting frame; 21, second rotating shaft; 22, fixed plate; 23, stop block; 24, Gear; 25, third hydraulic telescopic rod; 26, tooth plate; 27, fixed plate; 28, groove; 29, slide plate; 30, positioning plate; 31, slide groove; 32, first tension spring; 33, second support part; 34, sliding seat; 35, bump; 36, fourth hydraulic telescopic rod; 37, fixed ring; 38, connecting plate; 39, plug plate; 40, limit plate; 41, movable plate; 42, second tension spring; 43, fifth hydraulic telescopic rod; 44, pressing seat; 45, supporting leg; 46, universal wheel; 47, limit hole. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0020] Embodiment 1, by Figure 1 and Figure 4 The present invention comprises a first processing table 1 and a second processing table 2, the first processing table 1 is equipped with a splicing structure adapted to the second processing table 2, a translation seat 3 is arranged above the first processing table 1, the first processing table 1 is equipped with a translation member for driving the translation seat 3 to translate, a lower injection mold 6 is fixedly connected to the top of the second processing table 2, an upper injection mold 7 is arranged above the lower injection mold 6, and the second processing table 2 is equipped with a lifting unit for driving the upper injection mold 7 to lift and lower; A rotating seat 5 is provided on the side of the translation seat 3 facing the lower injection mold 6, and a rotator is installed on the translation seat 3 for driving the rotating seat 5 to rotate. A support shaft 4 is provided on the side of the rotating seat 5 facing the lower injection mold 6, and a positioning and clamping mechanism for positioning and clamping the pipe is installed on the support seat 5, and a sliding support assembly adapted to the support shaft 4 is installed; the pipe to be processed is positioned and clamped by the positioning and clamping mechanism, the rotating seat 5 is driven to rotate by the rotator, and the rotating seat 5 drives the support shaft 4 and the pipe to rotate synchronously through the sliding support assembly, and the staff welds the rotating pipe with a handheld welding gun. When the welding is completed, the translation seat 3 is driven to translate by the translation member, and the translation seat 3 drives the pipe to move between the lower injection mold 6 and the upper injection mold 7, and the upper injection mold is driven by the lifting unit 7 moves down, when the upper injection mold 7 contacts with the pipe, as the upper injection mold 7 continues to move downward, the sliding support assembly drives the support shaft 4 to slide down synchronously relative to the rotating seat 5, and the pipe follows the upper injection mold 7 to move downward synchronously, and finally the upper injection mold 7 and the lower injection mold 6 complete the mold closing, and the outside of the pipe is injection molded by the lower injection mold 6 and the upper injection mold 7. When the injection molding is completed, the upper injection mold 7 is driven by the lifting unit to move up to the initial height, and the rotating seat 5 drives the support shaft 4 and the pipe to move up to the initial height through the sliding support assembly, and the pipe is separated from between the lower injection mold 6 and the upper injection mold 7, and the welding and injection molding of the pipe can be completed. There is no need to repeatedly position and clamp the pipe, which is convenient for transferring the pipe from the welding station to the injection molding station, thereby improving the processing efficiency of the pipe.

[0021] Embodiment 2, based on embodiment 1, Figure 1 , Figure 4 , Figure 5 and Figure 6The translation member includes at least one mounting plate 8 fixedly mounted on the top of the first processing table 1, the mounting plate 8 is fixedly mounted with a first hydraulic telescopic rod 9, and the telescopic end of the first hydraulic telescopic rod 9 is fixedly connected to the translation seat 3, the rotator includes a first rotating shaft 10 rotatably mounted on the translation seat 3, the first rotating shaft 10 is fixedly connected to the rotating seat 5, the translation seat 3 is fixedly mounted with a servo motor 11, and the output end of the servo motor 11 is fixedly connected to the first rotating shaft 10, the lifting unit includes a fixed frame 12 fixedly mounted on the top of the second processing table 2, the fixed frame 12 is fixedly mounted with at least one second hydraulic telescopic rod 13, and the telescopic end of the second hydraulic telescopic rod 13 is fixedly connected to the top of the upper injection mold 7, the sliding support assembly includes a movable seat 14 fixedly mounted on the support shaft 4, a bottom plate 15 is provided below the movable seat 14, the bottom plate 15 is fixedly connected to the rotating seat 5, and the top of the bottom plate 15 is fixedly connected with two A guide column 16, the top end of the guide column 16 passes through the movable seat 14, the top of the movable seat 14 is in contact with a top plate 17, and the top end of the guide column 16 and the bottom of the top plate 17 are fixedly connected, the bottom of the movable seat 14 and the top of the bottom plate 15 are connected by a plurality of compression springs 18, the two sides of the movable seat 14 are respectively fixedly connected with a first support portion 19, the bottom of the first support portion 19 is in contact with a stop block 23, the rotating seat 5 is equipped with a toggle unit adapted to the stop block 23, the toggle unit includes a support frame 20 fixedly installed on the top end of the rotating seat 5, the support frame 20 is rotatably connected with a second rotating shaft 21, the stop block 23 and the second rotating shaft 21 are connected through a fixed plate 22, the outer fixed sleeve of the second rotating shaft 21 is provided with a gear 24, the support frame 20 is fixedly installed with a third hydraulic telescopic rod 25, the telescopic end of the third hydraulic telescopic rod 25 is fixedly connected with a toothed plate 26, and the toothed plate 26 is meshed with the gear 24; The first hydraulic telescopic rod 9 drives the translation seat 3 to move horizontally relative to the mounting plate 8 and the first processing table 1, and changes the horizontal position of the translation seat 3. The first rotating shaft 10 is driven to rotate by the servo motor 11, and the first rotating shaft 10 can drive the rotating seat 5 to rotate. The initial state of the compression spring 18 is in a compressed state. The compression spring 18 applies pressure to the movable seat 14 to make the movable seat 14 and the top plate 17 close to each other, and the stop block 23 is in contact with the first supporting portion 19, and the stop block 23 supports the first supporting portion 19. When the rotating seat 5 rotates, the first supporting portion 19, the movable seat 14 and the support shaft 4 are prevented from sliding relative to the rotating seat 5. The rotating seat 5 drives the support shaft 4 to rotate synchronously through the bottom plate 15, the guide column 16 and the movable seat 14. When the pipeline is located between the upper injection mold 7 and the lower injection mold 6, the tooth plate 26 is driven to move by the third hydraulic telescopic rod 25. The tooth plate 26 drives the second rotating shaft 21, the fixed plate 22 and the stop block 23 to rotate through the gear 24, so that the stop block 23 no longer blocks the first The support portion 19 and the movable seat 14 slide relative to the rotating seat 5, and then the second hydraulic telescopic rod 13 drives the upper injection mold 7 to move downward. When the upper injection mold 7 contacts the pipeline, as the upper injection mold 7 continues to move downward, the upper injection mold 7 pushes the pipeline, the positioning clamping mechanism and the support shaft 4 to move downward synchronously. The support shaft 4 drives the movable seat 14 to slide relative to the guide column 16, and the compression spring 18 is in a compressed state. Finally, the upper injection mold 7 and the lower injection mold 6 complete the mold closing. When the second hydraulic telescopic rod 13 drives the upper When the injection mold 7 moves upward, the compression spring 18 pushes the movable seat 14 and the support shaft 4 to move upward synchronously until the movable seat 14 and the top plate 17 abut against each other, and the support shaft 4 drives the pipeline to move up to the initial height, and the third hydraulic telescopic rod 25 drives the gear plate 26 to move, so that the gear 24 and the second rotating shaft 21 drive the fixed plate 22 and the stop block 23 to rotate to the initial position relative to the rotating seat 5, and the stop block 23 contacts the first support part 19 again to fix the first support part 19 and the movable seat 14 relative to the rotating seat 5.

[0022] Embodiment 3, based on embodiment 1, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 and Figure 8The positioning clamping mechanism includes a fixed plate 27 fixedly mounted on the support shaft 4, a plurality of grooves 28 are provided on the fixed plate 27, a positioning plate 30 is slidably provided in the groove 28, a slide groove 31 is provided on the positioning plate 30, a slide plate 29 is slidably provided in the slide groove 31, one end of the slide plate 29 is fixedly connected to the inner wall of the groove 28, and the other end of the slide plate 29 is connected to the inner wall of the slide groove 31 by a plurality of first tension springs 32, a second support portion 33 is fixedly connected to the side of the positioning plate 30 away from the lower injection mold 6, a sliding seat 34 is provided on the outer sliding sleeve of the support shaft 4, a plurality of protrusions 35 are fixedly mounted on the sliding seat 34, and the number of the protrusions 35 and the second support portion 33 is consistent, and an inclined surface matching the protrusions 35 is provided on the second support portion 33, two fourth hydraulic telescopic rods 36 are fixedly mounted on the support shaft 4, and the telescopic end of the fourth hydraulic telescopic rod 36 is fixedly connected to the sliding seat 34, and the splicing structure includes at least one fixed installation A fixing ring 37 mounted on the top of the first processing table 1, a plug plate 39 is passed through the fixing ring 37, a limiting hole 47 is provided at one end of the plug plate 39, and the other end of the plug plate 39 is fixedly connected to the second processing table 2 through the connecting plate 38, a movable plate 41 is provided below the plug plate 39, and the movable plate 41 is located below the first processing table 1, the top of the movable plate 41 is fixedly connected to the limiting plate 40, the limiting plate 40 passes through the first processing table 1, and the top of the limiting plate 40 is located in the limiting hole 47, the movable plate 41 and the bottom of the first processing table 1 are connected by a plurality of second tension springs 42, a pressing seat 44 is provided above the movable plate 41, a plurality of fifth hydraulic telescopic rods 43 are fixedly installed on the first processing table 1, and the telescopic end of the fifth hydraulic telescopic rod 43 is fixedly connected to the bottom of the pressing seat 44, at least four supporting legs 45 are fixedly connected to the bottom of the first processing table 1 and the second processing table 2, and the bottom of the supporting legs 45 is fixedly connected to a universal wheel 46; When the pipeline is sleeved on the outside of the fixed plate 27 through external equipment, the inner wall of the pipeline is supported by a positioning plate 30 located at the top, and then the sliding seat 34 and the protrusion 35 are driven by the fourth hydraulic telescopic rod 36 to slide horizontally relative to the support shaft 4, and the protrusion 35 slides on the inclined surface of the second support part 33, and the protrusion 35 pushes the second support part 33 and the positioning plate 30 to slide relative to the fixed plate 27 and the slide plate 29. The first tension spring 32 is in a tensioned state, and finally several positioning plates 30 are all in contact with the inner wall of the pipeline to position and clamp the pipeline relative to the fixed plate 27 and the support shaft 4. The design of the support legs 45 and the universal wheels 46 makes it easy to drive the first processing table 1 and the second processing table 2 to move to the preset position and need to be replaced. When the lower injection mold 6 and the upper injection mold 7 are in contact with each other, the pressing seat 44 is driven downward by the fifth hydraulic telescopic rod 43, and the pressing seat 44 contacts the top of the movable plate 41. As the pressing seat 44 continues to move downward, the pressing seat 44 drives the movable plate 41 and the limiting plate 40 to move downward synchronously, so that the top of the limiting plate 40 is disengaged from the limiting hole 47, and the limitation on the position of the plug plate 39 can be released. The staff pushes the second processing table 2 to move relative to the first processing table 1, so that the second processing table 2 drives the plug plate 39 to disengage from the fixing ring 37 through the connecting plate 38, and the splitting between the first processing table 1 and the second processing table 2 is completed. The second processing table 2 and the first processing table 1 can be split, so as to facilitate the overall replacement of the lower injection mold 6 and the upper injection mold 7 of different specifications.

[0023] The ultra-high pressure anti-permeability internal welding and external injection molding connection process for hydrogen transmission pipelines of this embodiment uses the ultra-high pressure anti-permeability internal welding and external injection molding connection device for hydrogen transmission pipelines as described above, and includes the following steps: Step 1: The pipe to be processed is positioned and clamped by the positioning and clamping mechanism, the rotating seat 5 is driven to rotate by the rotator, and the rotating seat 5 drives the support shaft 4 and the pipe to rotate synchronously through the sliding support assembly, and the staff welds the rotating pipe by holding a welding gun; Step 2: After welding is completed, the translation seat 3 is driven to translate by the translation member, and the translation seat 3 drives the pipeline to move between the lower injection mold 6 and the upper injection mold 7; Step 3: The upper injection mold 7 is driven downward by the lifting unit, and the sliding support assembly drives the support shaft 4 to slide downward synchronously relative to the rotating seat 5, and the pipeline moves downward synchronously with the upper injection mold 7, and finally the upper injection mold 7 and the lower injection mold 6 are molded together; Step 4: Injection molding is performed on the outside of the pipe through the lower injection mold 6 and the upper injection mold 7. After the injection molding is completed, the upper injection mold 7 is driven up to the initial height by the lifting unit, and the rotating seat 5 drives the support shaft 4 and the pipe to move up to the initial height through the sliding support assembly. The pipe is separated from the lower injection mold 6 and the upper injection mold 7, and the welding and injection molding of the pipe are completed.

[0024] Working principle: The pipe to be processed is positioned and clamped by the positioning and clamping mechanism, and the rotating seat 5 is driven to rotate by the rotator. The rotating seat 5 drives the support shaft 4 and the pipe to rotate synchronously through the sliding support assembly. The staff welds the rotating pipe with a handheld welding gun. When the welding is completed, the translation seat 3 is driven to translate by the translation member. The translation seat 3 drives the pipe to move between the lower injection mold 6 and the upper injection mold 7. The upper injection mold 7 is driven to move downward by the lifting unit. When the upper injection mold 7 contacts the pipe, as the upper injection mold 7 continues to move downward, the sliding support assembly drives the support shaft 4 to slide down synchronously relative to the rotating seat 5. , the pipeline moves down synchronously with the upper injection mold 7, and finally the upper injection mold 7 and the lower injection mold 6 complete the mold closing, and the outer part of the pipeline is injection molded by the lower injection mold 6 and the upper injection mold 7. When the injection molding is completed, the upper injection mold 7 is driven to move up to the initial height by the lifting unit, and the rotating seat 5 drives the support shaft 4 and the pipeline to move up to the initial height through the sliding support assembly. The pipeline is separated from the lower injection mold 6 and the upper injection mold 7, and the welding and injection molding of the pipeline can be completed. There is no need to repeatedly position and clamp the pipeline, which is convenient for transferring the pipeline from the welding station to the injection molding station, thereby improving the processing efficiency of the pipeline; The first hydraulic telescopic rod 9 drives the translation seat 3 to move horizontally relative to the mounting plate 8 and the first processing table 1, and changes the horizontal position of the translation seat 3. The first rotating shaft 10 is driven to rotate by the servo motor 11, and the first rotating shaft 10 can drive the rotating seat 5 to rotate. The initial state of the compression spring 18 is in a compressed state. The compression spring 18 applies pressure to the movable seat 14 to make the movable seat 14 and the top plate 17 close to each other, and the stop block 23 is in contact with the first supporting portion 19, and the stop block 23 supports the first supporting portion 19. When the rotating seat 5 rotates, the first supporting portion 19, the movable seat 14 and the support shaft 4 are prevented from sliding relative to the rotating seat 5. The rotating seat 5 drives the support shaft 4 to rotate synchronously through the bottom plate 15, the guide column 16 and the movable seat 14. When the pipeline is located between the upper injection mold 7 and the lower injection mold 6, the tooth plate 26 is driven to move by the third hydraulic telescopic rod 25. The tooth plate 26 drives the second rotating shaft 21, the fixed plate 22 and the stop block 23 to rotate through the gear 24, so that the stop block 23 no longer blocks the first The support portion 19 and the movable seat 14 slide relative to the rotating seat 5, and then the second hydraulic telescopic rod 13 drives the upper injection mold 7 to move downward. When the upper injection mold 7 contacts the pipeline, as the upper injection mold 7 continues to move downward, the upper injection mold 7 pushes the pipeline, the positioning clamping mechanism and the support shaft 4 to move downward synchronously. The support shaft 4 drives the movable seat 14 to slide relative to the guide column 16, and the compression spring 18 is in a compressed state. Finally, the upper injection mold 7 and the lower injection mold 6 complete the mold closing. When the second hydraulic telescopic rod 13 drives the upper When the injection mold 7 moves upward, the compression spring 18 pushes the movable seat 14 and the support shaft 4 to move upward synchronously until the movable seat 14 and the top plate 17 abut against each other, and the support shaft 4 drives the pipeline to move upward to the initial height, and the third hydraulic telescopic rod 25 drives the gear plate 26 to move, so that the gear 24 and the second rotating shaft 21 drive the fixed plate 22 and the stop block 23 to rotate to the initial position relative to the rotating seat 5, and the stop block 23 contacts the first supporting portion 19 again, so that the first supporting portion 19 and the movable seat 14 are fixed relative to the rotating seat 5; When the pipeline is sleeved on the outside of the fixed plate 27 through external equipment, the inner wall of the pipeline is supported by a positioning plate 30 located at the top, and then the sliding seat 34 and the protrusion 35 are driven by the fourth hydraulic telescopic rod 36 to slide horizontally relative to the support shaft 4, and the protrusion 35 slides on the inclined surface of the second support part 33, and the protrusion 35 pushes the second support part 33 and the positioning plate 30 to slide relative to the fixed plate 27 and the slide plate 29. The first tension spring 32 is in a tensioned state, and finally several positioning plates 30 are all in contact with the inner wall of the pipeline to position and clamp the pipeline relative to the fixed plate 27 and the support shaft 4. The design of the support legs 45 and the universal wheels 46 makes it easy to drive the first processing table 1 and the second processing table 2 to move to the preset position and need to be replaced. When the lower injection mold 6 and the upper injection mold 7 are in contact with each other, the pressing seat 44 is driven downward by the fifth hydraulic telescopic rod 43, and the pressing seat 44 contacts the top of the movable plate 41. As the pressing seat 44 continues to move downward, the pressing seat 44 drives the movable plate 41 and the limiting plate 40 to move downward synchronously, so that the top of the limiting plate 40 is disengaged from the limiting hole 47, and the limitation on the position of the plug plate 39 can be released. The staff pushes the second processing table 2 to move relative to the first processing table 1, so that the second processing table 2 drives the plug plate 39 to disengage from the fixing ring 37 through the connecting plate 38, and the splitting between the first processing table 1 and the second processing table 2 is completed. The second processing table 2 and the first processing table 1 can be split, so as to facilitate the overall replacement of the lower injection mold 6 and the upper injection mold 7 of different specifications.

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An ultra-high pressure anti-permeability internal welding and external injection molding connection device for a hydrogen transmission pipeline, comprising a first processing station (1) and a second processing station (2), characterized in that: The first processing table (1) is provided with a splicing structure adapted to the second processing table (2); a translation seat (3) is provided above the first processing table (1); a translation member for driving the translation seat (3) to translate is provided on the first processing table (1); a lower injection mold (6) is fixedly connected to the top of the second processing table (2); an upper injection mold (7) is provided above the lower injection mold (6); and a lifting unit for driving the upper injection mold (7) to move upward and downward is provided on the second processing table (2); A rotating seat (5) is provided on the side of the translation seat (3) facing the lower injection mold (6); a rotator for driving the rotating seat (5) to rotate is installed on the translation seat (3); a support shaft (4) is provided on the side of the rotating seat (5) facing the lower injection mold (6); a positioning clamping mechanism for positioning and clamping the pipe is installed on the support shaft (4); and a sliding support assembly matched with the support shaft (4) is installed on the rotating seat (5).

2. The ultra-high pressure anti-permeability internal welding and external injection molding connection device for hydrogen transport pipeline according to claim 1, characterized in that: The translation member comprises at least one mounting plate (8) fixedly mounted on the top of the first processing table (1); a first hydraulic telescopic rod (9) is fixedly mounted on the mounting plate (8); and a telescopic end of the first hydraulic telescopic rod (9) is fixedly connected to the translation seat (3).

3. The ultra-high pressure anti-permeability internal welding and external injection molding connection device for hydrogen transport pipeline according to claim 1, characterized in that: The rotator comprises a first rotating shaft (10) rotatably mounted on a translation seat (3); the first rotating shaft (10) and the rotating seat (5) are fixedly connected; a servo motor (11) is fixedly mounted on the translation seat (3); and an output end of the servo motor (11) is fixedly connected to the first rotating shaft (10).

4. The ultra-high pressure anti-permeability internal welding and external injection molding connection device for hydrogen transport pipeline according to claim 1, characterized in that: The lifting unit comprises a fixing frame (12) fixedly mounted on the top of the second processing table (2), at least one second hydraulic telescopic rod (13) being fixedly mounted on the fixing frame (12), and a telescopic end of the second hydraulic telescopic rod (13) is fixedly connected to the top of the upper injection mold (7).

5. The ultra-high pressure anti-permeability internal welding and external injection molding connection device for hydrogen transport pipeline according to claim 1, characterized in that: The sliding support assembly comprises a movable seat (14) fixedly mounted on a support shaft (4); a bottom plate (15) is provided below the movable seat (14); the bottom plate (15) and the rotating seat (5) are fixedly connected; two guide columns (16) are fixedly connected to the top of the bottom plate (15); the top ends of the guide columns (16) penetrate the movable seat (14); a top plate (17) is provided on the top of the movable seat (14); the top ends of the guide columns (16) and the bottom of the top plate (17) are fixedly connected; and the bottom of the movable seat (14) and the top of the bottom plate (15) are connected via a plurality of compression springs (18).

6. The ultra-high pressure anti-permeability internal welding and external injection molding connection device for hydrogen transport pipeline according to claim 5, characterized in that: The movable seat (14) is respectively fixedly connected to first support portions (19) on both sides, a stop block (23) is provided at the bottom of the first support portion (19), and the rotating seat (5) is provided with a toggle unit adapted to the stop block (23).

7. The ultra-high pressure anti-permeability internal welding and external injection molding connection device for hydrogen transport pipeline according to claim 6, characterized in that: The toggle unit comprises a support frame (20) fixedly mounted on the top end of the rotating seat (5); a second rotating shaft (21) is rotatably connected to the support frame (20); a stop block (23) and the second rotating shaft (21) are connected via a fixing plate (22); an outer fixing sleeve of the second rotating shaft (21) is provided with a gear (24); a third hydraulic telescopic rod (25) is fixedly mounted on the support frame (20); a telescopic end of the third hydraulic telescopic rod (25) is fixedly connected to a toothed plate (26), and the toothed plate (26) and the gear (24) are meshed.

8. The ultra-high pressure anti-permeability internal welding and external injection molding connection device for hydrogen transport pipeline according to claim 1, characterized in that: The positioning clamping mechanism comprises a fixed plate (27) fixedly mounted on the support shaft (4), the fixed plate (27) being provided with a plurality of grooves (28), a positioning plate (30) being slidably disposed in the grooves (28), the positioning plate (30) being provided with a slide groove (31), a slide plate (29) being slidably disposed in the slide groove (31), one end of the slide plate (29) being fixedly connected to the inner wall of the groove (28), the other end of the slide plate (29) being connected to the inner wall of the slide groove (31) via a plurality of first tension springs (32), and the positioning plate (30) being remote from the inner wall of the groove (28). A second support portion (33) is fixedly connected to one side away from the lower injection mold (6); an outer sliding sleeve of the support shaft (4) is provided with a sliding seat (34); a plurality of protrusions (35) are fixedly mounted on the sliding seat (34); and the number of the protrusions (35) is the same as that of the second support portion (33); an inclined surface matching the protrusions (35) is provided on the second support portion (33); two fourth hydraulic telescopic rods (36) are fixedly mounted on the support shaft (4); and the telescopic ends of the fourth hydraulic telescopic rods (36) are fixedly connected to the sliding seat (34).

9. The ultra-high pressure anti-permeability internal welding and external injection molding connection device for hydrogen transport pipeline according to claim 1, characterized in that: The splicing structure comprises at least one fixed ring (37) fixedly mounted on the top of the first processing table (1), a plug plate (39) passing through the fixed ring (37), a limiting hole (47) being provided at one end of the plug plate (39), the other end of the plug plate (39) being fixedly connected to the second processing table (2) via a connecting plate (38), a movable plate (41) being provided below the plug plate (39), the movable plate (41) being located below the first processing table (1), the top of the movable plate (41) being fixedly connected to a limiting plate (40), the limiting plate (40) passing through the first processing table (1), the limiting plate (41) The top of the movable plate (40) is located in the limiting hole (47), the bottom of the movable plate (41) and the first processing table (1) are connected via a plurality of second tension springs (42), a pressing seat (44) is provided above the movable plate (41), the first processing table (1) is fixedly mounted with a plurality of fifth hydraulic telescopic rods (43), and the telescopic ends of the fifth hydraulic telescopic rods (43) are fixedly connected to the bottom of the pressing seat (44), the bottoms of the first processing table (1) and the second processing table (2) are fixedly connected with at least four supporting legs (45), and the bottom ends of the supporting legs (45) are fixedly connected with universal wheels (46).

10. A process for connecting a hydrogen transport pipeline by ultra-high pressure anti-permeability internal welding and external injection molding, using the ultra-high pressure anti-permeability internal welding and external injection molding connecting device for hydrogen transport pipelines as claimed in claim 1, characterized in that: The following steps are involved: Step 1: The pipe to be processed is positioned and clamped by the positioning and clamping mechanism, the rotating seat (5) is driven to rotate by the rotator, the rotating seat (5) drives the support shaft (4) and the pipe to rotate synchronously through the sliding support assembly, and the worker welds the rotating pipe by holding a welding gun; Step 2: After welding is completed, the translation seat (3) is driven to translate by the translation member, and the translation seat (3) drives the pipeline to move between the lower injection mold (6) and the upper injection mold (7); Step 3: The upper injection mold (7) is driven downward by the lifting unit, and the sliding support assembly drives the support shaft (4) to move downward synchronously relative to the rotating seat (5), and the pipeline moves downward synchronously with the upper injection mold (7), and finally the upper injection mold (7) and the lower injection mold (6) are molded together; Step 4: The outer part of the pipe is subjected to injection molding by means of the lower injection mold (6) and the upper injection mold (7). When the injection molding is completed, the upper injection mold (7) is driven to move up to the initial height by the lifting unit, and the rotating seat (5) drives the support shaft (4) and the pipe to move up to the initial height through the sliding support assembly. The pipe is separated from between the lower injection mold (6) and the upper injection mold (7), and the welding and injection molding of the pipe are completed.

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