An automatic gluing device and method for the plastic liner and valve seat of a type IV hydrogen storage bottle

Abstract

The present invention belongs to the technical field of hydrogen storage bottle liner molding, and aims to solve the current problem of the lack of a complete gluing process for plastic liners and metal valve seats. An automatic gluing device and method for the plastic liners and valve seats of type IV hydrogen storage bottles are provided. An adjustable gluing mechanism is used to achieve uniform and efficient gluing. The liners are automatically centered and effectively supported and fixed by the liners support rotary mechanism, which facilitates subsequent gluing and assembly work. The valve seat connection and clamping mechanism can realize the installation of the metal valve seat. With the cooperation of the entire frame and the guide column, the metal valve seat and the plastic liners can be assembled and a constant and uniform pressure can be applied to the metal valve seat in the circumferential direction after gluing, so that the glue can naturally solidify in a pressure-maintaining environment. The present invention can meet the gluing requirements of complex connection structures, can achieve efficient bonding of the plastic liners and metal valve seats, and has the advantages of good centering, high integration, and complete functions.

Description

Technical Field

[0001] The present invention belongs to the technical field of hydrogen storage bottle liner molding, and in particular relates to an automatic gluing device and method for a plastic liner and a valve seat of a Type IV hydrogen storage bottle. Background Art

[0002] Currently, onboard hydrogen storage technologies for hydrogen fuel cell vehicles primarily include high-pressure gaseous hydrogen storage, cryogenic liquid hydrogen storage, high-pressure and low-temperature liquid hydrogen storage, metal hydride hydrogen storage, and organic liquid hydrogen storage. Type IV plastic-lined hydrogen storage bottles, with their high hydrogen storage density, excellent fatigue resistance, and low cost, are the optimal choice for high-pressure onboard hydrogen storage. On-board Type IV hydrogen storage bottles are refillable gas cylinders with a rated operating pressure of ≤70 MPa, a rated operating temperature of no less than -40°C and no more than 85°C, a plastic liner as the high-pressure hydrogen storage container, and an outer layer wrapped with carbon fiber. These cylinders are fixed to road vehicles and serve as fuel tanks.

[0003] The molding process for Type IV hydrogen storage bottles is primarily divided into two major processes: liner molding and winding. During the liner molding process, the split-molding process of injection molding and welding offers high precision, dimensional stability, and excellent mechanical properties. This process is suitable for molding a variety of bottle valve seat structures, and allows for individually designed sealing structures. Injection molding of the liner can be performed as either one-piece liner and valve seat molding or as separate liner molding. The separate liner and valve seat molding process involves: liner injection molding, valve seat bonding, and liner welding.

[0004] The structure of the connection between the inner liner and the valve seat of a Type IV hydrogen storage bottle can be designed in a variety of ways to accommodate different plastic liner sizes. However, the connection is complex, and the bonding process requires ensuring proper alignment of the valve seat and inner liner, uniform application of the adhesive, uniform curing, and efficient bonding, posing significant challenges. Therefore, the development of an automatic gluing device for the plastic inner liner and valve seat of a Type IV hydrogen storage bottle aims to achieve automatic, uniform gluing, uniform compression, and efficient bonding between the inner liner and the valve seat. This, combined with a comprehensive gluing method based on this device, is of great significance to the production of Type IV hydrogen storage bottles. Summary of the Invention

[0005] In order to solve at least one of the above-mentioned technical problems existing in the prior art, the present invention provides an automatic gluing device and method for the plastic liner and valve seat of a Type IV hydrogen storage bottle.

[0006] The present invention is implemented by the following technical solutions: an automatic gluing device for the plastic liner and valve seat of a type IV hydrogen storage bottle, comprising a whole frame, a movable platform, a liner mounting platform, a valve seat connection and clamping mechanism, a liner support rotation mechanism, an adjustable gluing mechanism and a glue storage tank; the movable platform is slidably connected to the inner upper part of the whole frame and can change its position through an electric cylinder, the valve seat connection and clamping mechanism and the adjustable gluing mechanism are installed at the lower end of the movable platform; the valve seat connection and clamping mechanism comprises a valve seat connection shaft and a valve seat clamping mechanism, the upper end of the valve seat connection shaft is connected to a vertical cylinder, the vertical cylinder is used to drive the valve seat connection and clamping mechanism to perform axial reciprocating motion; the lower end of the valve seat connection shaft is used to connect to the metal valve seat, The valve seat connecting shaft is installed on the clamping frame of the valve seat clamping mechanism through a clamping strip, and there is an adjustment gap between the valve seat connecting shaft and the clamping frame. The valve seat clamping mechanism is used to provide a clamping force to the metal valve seat toward the side of the plastic liner; the liner mounting platform is fixedly arranged at the lower part of the entire frame, and the liner support rotating mechanism is installed on the liner mounting platform. The liner support rotating mechanism is used to support the plastic liner and drive the plastic liner to rotate; the adjustable gluing mechanism includes a gluing cylinder and an angle adjustment mechanism. The angle adjustment mechanism is used to adjust the direction and position of the glue nozzle of the gluing cylinder to achieve gluing at the connection between the metal valve seat and the plastic liner; the glue inlet end of the glue cylinder is connected to the glue storage tank through a glue delivery pipe, and the glue storage tank is installed at the lower part of the entire frame.

[0007] Preferably, the valve seat clamping mechanism includes a clamping frame, a clamping cylinder, a clamping joint and a pressure sensor, wherein multiple clamping cylinders are arranged on the clamping frame at intervals, the clamping joint is installed at the lower end of the clamping cylinder, and a pressure sensor is provided at the contact end of the clamping joint and the metal valve seat.

[0008] Preferably, the upper end of the clamping frame has a hollow cylinder, the valve seat connecting shaft is movably inserted in the hollow cylinder, the side wall of the hollow cylinder has a limiting slot hole that cooperates with the clamping strip, and the hole height of the limiting slot hole is greater than the thickness of the clamping strip.

[0009] Preferably, the angle adjustment mechanism includes a transverse cylinder, a swing arm and a swing motor. There are two groups of angle adjustment mechanisms. A cylinder mounting seat is installed at the lower end of the movable platform. The two groups of angle adjustment mechanisms are symmetrically installed on both sides of the cylinder mounting seat, wherein the bottom end of the transverse cylinder is connected to the cylinder mounting seat, the top end of the transverse cylinder is rotatably connected to the middle part of the upper arm of the swing arm through a pin shaft, the upper end of the swing arm is rotatably connected to the movable platform through a pin shaft, the glue cylinder is rotatably connected to the lower end of the swing arm through a swing motor, and the outer wall of the glue cylinder has a clamp connected to the output end of the swing motor.

[0010] Preferably, it also includes a glue discharging mechanism of the glue cylinder, which includes a glue discharging motor, a glue cylinder support plate, a threaded rod, a glue rod, a slider and a slider glue rod connecting piece; the glue discharging motor is installed on the glue cylinder through the glue cylinder support plate, the output end of the glue discharging motor is connected to the threaded rod, the slider is slidably connected to the threaded rod and the slider is connected to the end of the glue rod through the slider glue rod connecting piece, and the front end pressure plate of the glue rod is slidably set in the glue cylinder.

[0011] Preferably, the front end of the glue barrel has a glue nozzle, which is used to change the extrusion shape of the adhesive in the glue barrel; there are two glue barrels, and they are located on both sides of the metal valve seat, the glue nozzle of one glue barrel is in the shape of a hollow cylinder, and the glue nozzle of the other glue barrel is in the shape of a flat shape and the outlet end is a long strip hole.

[0012] Preferably, the liner support rotation mechanism includes a rotation mechanism and an liner support mechanism;

[0013] The slewing mechanism includes a large slewing bearing, a slewing support frame, a slewing motor and an inner liner tray. The slewing support frame is fixedly arranged at the lower end of the inner liner mounting platform. The inner ring of the large slewing bearing is installed on the inner side of the slewing support frame. The outer ring of the large slewing bearing is installed on the inner side of the slewing support frame. The inner ring of the large slewing bearing is bolted to the upper and lower parts of the inner liner tray.

[0014] The inner liner support mechanism includes a driving large gear, a driving small gear, a supporting motor, a supporting shell, a supporting shaft, a connecting rod, a supporting lever and a connecting disc. The supporting shell is installed at the lower upper end of the inner liner tray, and the rotary motor is installed on the rotary support frame and the output end is connected to the bottom end of the supporting shell; the supporting shaft is rotatably installed in the center position of the inner cavity of the supporting shell, and the driving large gear and two connecting discs are keyed to the supporting shaft from bottom to top along the axial direction of the supporting shaft. The supporting motor is installed at the lower end of the inner liner tray and the output end extends to the inner cavity of the supporting shell and is connected to the driving small gear. The driving small gear and the driving large gear are meshed for transmission. The side wall of the supporting shell is provided with multiple notches at the same height as the connecting disc at circumferential intervals, and multiple connecting rods are arranged at circumferential intervals along the connecting disc and are rotatably connected to the connecting disc. The end of the connecting rod away from the connecting disc is hinged with a supporting lever, and each notch of the supporting shell is rotatably connected to a supporting lever, and the outer end of the supporting lever extends to the outside of the supporting shell to abut against the inner wall of the plastic inner liner.

[0015] Preferably, the entire frame, movable platform, liner mounting platform, valve seat connection and clamping mechanism, liner support rotation mechanism, and adjustable gluing mechanism are all coaxially arranged; the movable platform is slidably connected to the slide rail on the inner side of the entire frame through a sliding block, and a guide column is provided at the lower end of the movable platform, which moves through the liner mounting platform below.

[0016] The present invention also provides a method for automatically gluing the plastic liner and valve seat of a Type IV hydrogen storage bottle, comprising the following steps:

[0017] S1: Sleeve the plastic liner onto the outer side of the supporting shell on the liner tray, and connect the metal valve seat to the lower end of the valve seat connecting shaft;

[0018] S2: operating the support motor so that the driving pinion drives the driving gear to rotate, thereby driving the support shaft and the connecting disc connected thereto to rotate, and the connecting disc drives the connecting rod and the support lever to move, so that the support lever supports the inner wall of the plastic liner and automatically centers the plastic liner;

[0019] S3: Operate the electric cylinder to drive the movable platform down, and at the same time operate the vertical cylinder to drive the valve seat connection and clamping mechanism down to the preset position to avoid interference with the adjustable glue-spraying mechanism; operate the horizontal cylinder to adjust the swing arm to the preset position, and operate the swing motor to adjust the glue-spraying cylinder to an angle suitable for glue dispensing;

[0020] S4: Operate the rotary motor to drive the large rotary bearing to rotate, thereby causing the liner support mechanism and the plastic liner to rotate synchronously. At the same time, operate the glue discharging motor to drive the glue rod to apply glue to the connection between the metal valve seat and the plastic liner.

[0021] S5: After the glue is applied, the vertical cylinder and electric cylinder are operated to drive the metal valve seat to continue to move downward, and the rotary motor is operated to rotate the plastic liner until the inner lining of the plastic liner and the tooth structure of the metal valve seat are aligned. After alignment, the vertical cylinder is continued to be operated to assemble the metal valve seat on the plastic liner;

[0022] S6: Operate the compression cylinder to drive the compression joint down to 1 / 2-2 / 3 of the diameter of the metal valve seat, observe the value of the pressure sensor at the compression joint, make the values ​​of multiple pressure sensors consistent, and cure the compressed metal valve seat and plastic liner at room temperature for a preset time;

[0023] S7: After curing is completed, retract the clamping cylinder, operate the support motor to drive the support lever to retract, disconnect the metal valve seat and the valve seat connecting shaft, operate the electric cylinder to drive the valve seat connection and clamping mechanism to rise, and remove the bonded plastic liner and metal valve seat.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The automatic gluing and bonding device and method for the plastic liner and valve seat of a Type IV hydrogen storage bottle provided by the present invention designs a universal gluing device for the connection structures of the liner and valve seat with different structural forms, overcomes the influence of the liner size and geometric factors, and can achieve uniform and efficient gluing through the adjustable gluing mechanism; the liner support mechanism can automatically align the liner and effectively support and fix the liner, which is convenient for subsequent gluing and assembly work; the valve seat connection and clamping mechanism can realize the installation of the metal valve seat, and with the cooperation of the entire frame and the guide column, the assembly of the metal valve seat and the plastic liner can be realized, and a constant and uniform pressure can be applied to the circumference of the metal valve seat after gluing is completed, and it can naturally solidify in a pressure-maintaining environment. The device can meet the gluing requirements of complex connection structures, can achieve efficient bonding of the plastic liner and the metal valve seat, and has the advantages of good centering, high integration, and complete functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 It is a front view of the overall structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the position of the overall structure of the present invention when gluing;

[0029] Figure 3 It is a schematic diagram of the position of the overall structure of the present invention when solidified;

[0030] Figure 4 It is a side view of the adjustable glue-applying mechanism of the present invention;

[0031] Figure 5 Schematic diagram of the glue discharging mechanism of the present invention;

[0032] Figure 6 It is a cross-sectional schematic diagram of the rotary mechanism of the present invention;

[0033] Figure 7 is a top view of the inner liner support mechanism of the present invention;

[0034] Figure 8 This is a side view of the inner liner support mechanism of the present invention;

[0035] Figure 9 It is a schematic diagram of the valve seat connection and pressing mechanism of the present invention.

[0036] In the figure: 101-whole frame; 102-movable platform; 103-liner installation platform; 104-guide column; 201-electric cylinder; 202-vertical cylinder; 301-valve seat connecting shaft; 302-card strip; 303-pressing frame; 304-pressing cylinder; 305-pressing joint; 306-pressure sensor; 307-limiting slot; 401-glue cylinder; 402-horizontal cylinder; 403-swing arm; 404-swing motor; 405-cylinder mounting base; 5-glue storage tank; 601-glue discharging motor; 6 02-rubber cylinder support plate; 603-threaded rod; 604-gluing rod; 605-slider; 606-slider gluing rod connector; 701-large rotary bearing; 702-rotating support frame; 703-rotating motor; 704-liner tray; 705-driving large gear; 706-driving small gear; 707-support shell; 708-support shaft; 709-connecting rod; 710-support lever; 711-connecting disc; 712-support motor; 8-rubber delivery pipeline; 9-metal valve seat; 10-plastic liner. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention are clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other implementations derived by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts are within the scope of protection of the present invention.

[0038] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which the present invention can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should fall within the scope of the technical content disclosed in the present invention without affecting the efficacy and purpose that can be achieved by the present invention. It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity from several other entities, and do not necessarily require or imply any actual relationship or order between these entities.

[0039] The present invention provides an embodiment:

[0040] like Figures 1 to 9As shown, an automatic gluing device for the plastic liner and valve seat of a type IV hydrogen storage bottle includes a whole frame 101, a movable platform 102, a liner mounting platform 103, a valve seat connection and clamping mechanism, a liner support and rotation mechanism, an adjustable gluing mechanism and a glue storage tank 5; the movable platform 102 is slidably connected to the inner upper part of the whole frame 101 and can change its position through the electric cylinder 201, and the valve seat connection and clamping mechanism and the adjustable gluing mechanism are installed at the lower end of the movable platform 102; the whole frame 101, the movable platform 102, the liner mounting platform 103, the valve seat connection and clamping mechanism, the liner support and rotation mechanism, and the adjustable gluing mechanism are all coaxially arranged; the movable platform 102 is slidably connected to the slide rail on the inner side of the whole frame 101 through a sliding block, and a guide column 104 is provided at the lower end of the movable platform 102, which moves through the liner mounting platform 103 below;

[0041] The valve seat connection and clamping mechanism includes a valve seat connection shaft 301 and a valve seat clamping mechanism. The upper end of the valve seat connection shaft 301 is connected to a vertical cylinder 202, and the vertical cylinder 202 is used to drive the valve seat connection and clamping mechanism to perform axial reciprocating motion; the lower end of the valve seat connection shaft 301 is used to connect the metal valve seat 9, and the valve seat connection shaft 301 is installed on the clamping frame 303 of the valve seat clamping mechanism through the clamping strip 302, and there is an adjustable gap between the valve seat connection shaft 301 and the clamping frame 303. The valve seat clamping mechanism is used to provide a clamping force on the metal valve seat 9 toward the side of the plastic inner liner 10; The liner mounting platform 103 is fixedly arranged at the lower part of the entire frame 101, and the liner support rotating mechanism is installed on the liner mounting platform 103. The liner support rotating mechanism is used to support the plastic liner 10 and drive the plastic liner 10 to rotate; the adjustable gluing mechanism includes a gluing cylinder 401 and an angle adjustment mechanism. The angle adjustment mechanism is used to adjust the direction and position of the glue nozzle of the gluing cylinder 401 to achieve gluing at the connection between the metal valve seat 9 and the plastic liner 10; the glue inlet end of the glue cylinder 401 is connected to the glue storage tank 5 through the glue delivery pipe 8, and the glue storage tank 5 is installed at the lower part of the entire frame 101.

[0042] In this embodiment, the valve seat clamping mechanism includes a clamping frame 303, a clamping cylinder 304, a clamping joint 305, and a pressure sensor 306. Multiple clamping cylinders 304 are arranged in a spaced arrangement around the clamping frame 303. The clamping joint 305 is mounted at the lower end of the clamping cylinder 304. A pressure sensor 306 is provided at the contact end between the clamping joint 305 and the metal valve seat 9. The upper end of the clamping frame 303 has a hollow cylinder, into which the valve seat connecting shaft 301 is movably inserted. The sidewall of the hollow cylinder has a limiting slot 307 that cooperates with the clamping strip 302, and the hole height of the limiting slot 307 is greater than the thickness of the clamping strip 302. The purpose of this design is to prevent the overall structure from interfering with and damaging the rigidity of the structure due to displacement caused by the extrusion of the adhesive during the clamping process. After the gluing operation is complete, driven by the vertical cylinder 202, the metal valve seat 9 and the valve seat connection and clamping mechanism move downward as a unit, completing the assembly process between the metal valve seat 9 and the plastic liner 10. During the assembly phase, the upper end of the valve seat connecting shaft 301 reaches the upper edge of the preset gap. During the clamping operation, the adhesive squeezes the metal valve seat 9, causing the valve seat connecting shaft 301 to move slightly downward. To ensure that the valve seat connecting shaft 301 can complete this downward movement smoothly, this reserved travel is added to the connection.

[0043] The angle adjustment mechanism includes a transverse cylinder 402, a swing arm 403 and a swing motor 404. There are two groups of angle adjustment mechanisms. A cylinder mounting seat 405 is installed at the lower end of the movable platform 102. The two groups of angle adjustment mechanisms are symmetrically installed on both sides of the cylinder mounting seat 405, wherein the bottom end of the cylinder of the transverse cylinder 402 is connected to the cylinder mounting seat 405, and the top end of the cylinder of the transverse cylinder 402 is rotatably connected to the middle part of the upper arm of the swing arm 403 through a pin shaft. The upper end of the swing arm 403 is rotatably connected to the movable platform 102 through a pin shaft. The glue cylinder 401 is rotatably connected to the lower end of the swing arm 403 through the swing motor 404. The outer wall of the glue cylinder 401 has a clamp connected to the output end of the swing motor 404.

[0044] The glue cylinder 401 is also provided with a glue discharging mechanism, which includes a glue discharging motor 601, a glue cylinder support plate 602, a threaded rod 603, a glue rod 604, a slider 605 and a slider glue rod connecting piece 606; the glue discharging motor 601 is installed on the glue cylinder 401 through the glue cylinder support plate 602, and the output end of the glue discharging motor 601 is connected to the threaded rod 603, the slider 605 is slidably connected to the threaded rod 603 and the slider 605 is connected to the end of the glue rod 604 through the slider glue rod connecting piece 606, and the front end pressure plate of the glue rod 604 is slidably set in the glue cylinder 401.

[0045] The front end of the glue cylinder 401 has a glue nozzle, which is used to change the extrusion shape of the adhesive in the glue cylinder 401; there are two glue cylinders 401, and they are located on both sides of the metal valve seat 9. The glue nozzle of one glue cylinder 401 is in the shape of a hollow cylinder, and the glue nozzle of the other glue cylinder 401 is in the shape of a flat shape and the outlet end is a long strip hole. In view of the assembly characteristics of the plastic liner 10 and the metal valve seat 9, two glue heads are designed to ensure the efficiency and accuracy of glue application, namely a hollow cylindrical glue nozzle and a flat glue nozzle. During the glue application operation, the hollow cylindrical glue nozzle is specifically used to apply the toothed part in the assembly shape, while the flat glue nozzle is responsible for applying glue on the plane of the joint surface, and also has the function of scraping glue, effectively preventing excessive accumulation of adhesive. These tooth-like structures are evenly distributed on the circumference, totaling 12. During the gluing process, the hollow cylindrical nozzle operates in an inching manner. A height sensor is installed on the nozzle. When the height sensor detects that the plastic liner 10 has fallen below its original height during rotation, indicating that the serrations have been reached, the nozzle begins controlled glue application. With each rotation of the plastic liner 10, the nozzle dispenses glue 12 times, each time targeting a specific serration. Simultaneously, the flat nozzle continuously applies glue at a height of 5 mm from the mating surface, with each application lasting 30 mm. With each rotation of the plastic liner 10, the flat nozzle advances 30 mm toward the center of the circle to cover the adhesive on the inner circle. Gluing the serrations is completed in one rotation, while the flat surfaces require three to four rotations to achieve the desired effect. The entire gluing process is completed after the plastic liner 10 rotates three to four times, after which the glue cylinder 401 is immediately returned to its initial position.

[0046] The liner support rotation mechanism includes a rotation mechanism and an liner support mechanism; the rotation mechanism includes a large rotary bearing 701, a rotary support frame 702, a rotary motor 703 and an liner tray 704. The rotary support frame 702 is fixedly arranged at the lower end of the liner mounting platform 103. The outer ring of the large rotary bearing 701 is installed on the inner side of the rotary support frame 702. The inner ring of the large rotary bearing 701 is bolted to the upper and lower parts of the liner tray 704.

[0047] The liner support mechanism includes a driving gear 705, a driving gear 706, a supporting shell 707, a supporting shaft 708, a connecting rod 709, a supporting lever 710, a connecting disc 711 and a supporting motor 712. The supporting shell 707 is installed at the lower upper end of the liner tray 704, and the rotary motor 703 is installed on the rotary support frame 702 and the output end is connected to the bottom end of the supporting shell 707; the supporting shaft 708 is rotatably installed at the center of the inner cavity of the supporting shell 707, the driving gear 705 and the two connecting discs 711 are keyed to the supporting shaft 708 in sequence from bottom to top along the axial direction of the supporting shaft 708, and the supporting motor 712 is installed on the liner tray 7 04 and the output end thereof extend to the inner cavity of the support shell 707 and are connected to the driving pinion 706, and the driving pinion 706 is meshed with the driving gear 705 for transmission. The side wall of the support shell 707 and the connecting disc 711 are provided with a plurality of notches at equal heights along the circumferential direction, and a plurality of connecting rods 709 are arranged at circumferential intervals along the connecting disc 711 and are rotatably connected to the connecting disc 711. The end of the connecting rod 709 away from the connecting disc 711 is hinged with a supporting lever 710, and each notch of the support shell 707 is rotatably connected to a supporting lever 710, and the outer end of the support lever 710 extends to the outside of the support shell 707 to abut against the inner wall of the plastic liner 10.

[0048] The present invention also provides a method for automatically gluing the plastic liner and valve seat of a Type IV hydrogen storage bottle, comprising the following steps:

[0049] S1: Sleeve the plastic liner 10 onto the outer side of the support shell 707 on the liner tray 704, and connect the metal valve seat 9 to the lower end of the valve seat connecting shaft 301;

[0050] S2: Operating the support motor 712 to rotate the driving pinion 706 and the driving gear 705, thereby rotating the support shaft 708 and the connecting disc 711 connected thereto. The connecting disc 711 drives the connecting rod 709 and the support lever 710 to move, so that the support lever 710 supports the inner wall of the plastic liner 10 and automatically aligns the plastic liner 10.

[0051] S3: Operate the electric cylinder 201 to drive the movable platform 102 to descend, and at the same time operate the vertical cylinder 202 to drive the valve seat connection and pressing mechanism to descend to a preset position to avoid interference with the adjustable glue-dispensing mechanism; operate the horizontal cylinder 402 to adjust the swing arm 403 to a preset position, and operate the swing motor 404 to adjust the glue-dispensing cylinder 401 to an angle suitable for glue dispensing;

[0052] S4: Operate the rotary motor 703 to drive the large rotary bearing 701 to rotate, thereby causing the liner support mechanism and the plastic liner 10 to rotate synchronously. At the same time, operate the glue discharging motor 601 to drive the glue rod 604 to move, thereby applying glue to the connection between the metal valve seat 9 and the plastic liner 10;

[0053] S5: After the glue coating is completed, the vertical cylinder 202 and the electric cylinder 201 are operated to drive the metal valve seat 9 to continue to move downward, and the rotary motor 703 is operated to rotate the plastic liner 10 until the inner lining of the plastic liner 10 and the tooth structure of the metal valve seat 9 are aligned. After alignment, the vertical cylinder 202 is continued to be operated to assemble the metal valve seat 9 on the plastic liner 10;

[0054] S6: Operate the compression cylinder 304 to drive the compression joint 305 down to 1 / 2-2 / 3 of the diameter of the metal valve seat 9, observe the value of the pressure sensor 306 at the compression joint 305, and make the values ​​of multiple pressure sensors 306 consistent. Curing the compressed metal valve seat 9 and plastic liner 10 at room temperature for 48 hours;

[0055] S7: After curing is completed, the clamping cylinder 304 is retracted, and the support motor 712 is operated to drive the support lever 710 to retract, disconnecting the metal valve seat 9 and the valve seat connecting shaft 301, and the electric cylinder 201 is operated to drive the valve seat connection and clamping mechanism to rise, and the bonded plastic liner 10 and the metal valve seat 9 are taken out.

[0056] The foregoing description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be readily conceived by a person skilled in the art within the technical scope disclosed herein should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. An automatic glue coating device for the plastic liner and valve seat of a Type IV hydrogen storage bottle, characterized by: It includes a whole frame (101), a movable platform (102), an inner tank installation platform (103), a valve seat connection and pressing mechanism, an inner tank support rotation mechanism, an adjustable glue-spraying mechanism and a glue storage tank (5); The movable platform (102) is slidably connected to the inner upper part of the entire frame (101) and can achieve position change through the electric cylinder (201). The valve seat connection and pressing mechanism and the adjustable glue-spraying mechanism are installed at the lower end of the movable platform (102); The valve seat connection and pressing mechanism includes a valve seat connection shaft (301) and a valve seat pressing mechanism. The upper end of the valve seat connection shaft (301) is connected to a vertical cylinder (202). The vertical cylinder (202) is used to drive the valve seat connection and pressing mechanism to perform axial reciprocating motion. The valve seat pressing mechanism includes a pressing frame (303), a pressing cylinder (304), a pressing joint (305) and a pressure sensor (306). The multiple pressing cylinders (304) are arranged on the pressing frame (303) at intervals and in a surrounding manner. The pressing joint (305) is installed on the A pressure sensor (306) is provided at the lower end of the compression cylinder (304), the contact end of the compression joint (305) and the metal valve seat (9); the lower end of the valve seat connecting shaft (301) is used to connect the metal valve seat (9), the valve seat connecting shaft (301) is installed on the compression frame (303) of the valve seat compression mechanism through the clamping strip (302), and there is an adjustable gap between the valve seat connecting shaft (301) and the compression frame (303), and the valve seat compression mechanism is used to provide a compression force on the metal valve seat (9) toward the side of the plastic liner (10); The liner mounting platform (103) is fixedly arranged at the lower part of the entire frame (101), and the liner support rotary mechanism is installed on the liner mounting platform (103). The liner support rotary mechanism is used to support the plastic liner (10) and drive the plastic liner (10) to rotate. The adjustable glue-spraying mechanism comprises a glue-spraying cylinder (401) and an angle adjustment mechanism, wherein the angle adjustment mechanism is used to adjust the direction and position of the glue nozzle of the glue-spraying cylinder (401) so as to achieve glue coating at the connection between the metal valve seat (9) and the plastic liner (10); the glue inlet end of the glue-spraying cylinder (401) is connected to the glue storage tank (5) through a glue delivery pipe (8), and the glue storage tank (5) is installed at the lower part of the entire frame (101); the angle adjustment mechanism comprises a transverse cylinder (402), a swing arm (403) and a swing motor (404), and the number of the angle adjustment mechanism is two groups, and a cylinder mounting seat (405) is installed at the lower end of the movable platform (102), and the two groups of angle adjustment mechanisms are symmetrically installed on the cylinder mounting seat. (405) on both sides, wherein the cylinder bottom end of the horizontal cylinder (402) is connected to the cylinder mounting seat (405), the cylinder top end of the horizontal cylinder (402) is rotatably connected to the middle part of the upper arm of the swing arm (403) through a pin shaft, the upper end of the swing arm (403) is rotatably connected to the movable platform (102) through a pin shaft, the glue cylinder (401) is rotatably connected to the lower end of the swing arm (403) through a swing motor (404), and the outer wall of the glue cylinder (401) has a clamp connected to the output end of the swing motor (404); the front end of the glue cylinder (401) has a glue nozzle, and the glue nozzle is used to change the extrusion shape of the adhesive in the glue cylinder (401); wherein the glue cylinder (401) ) are two in number and are located on both sides of the metal valve seat (9), wherein the glue nozzle of one glue barrel (401) is in the shape of a hollow cylinder, and the glue nozzle of the other glue barrel (401) is in the shape of a flat shape and has an elongated hole at the outlet end; in the glue application operation, the hollow cylindrical glue nozzle is used to apply glue to the toothed portion in the assembly shape, while the flat glue nozzle is used to apply glue on the plane of the joint surface; in the glue application process, the hollow cylindrical glue nozzle operates in a point-to-point manner, and a height sensor is installed on the hollow cylindrical glue nozzle. When the height sensor detects that the height of the plastic liner (10) is lower than the original height of the plastic liner (10) during the rotation process, it indicates that the toothed portion has been reached, and the space is The central cylindrical nozzle starts to apply glue under control. As the plastic liner (10) rotates one circle, the hollow cylindrical nozzle will dispense glue 12 times continuously, and each time the glue is applied to a tooth-shaped structure; at the same time, the flat nozzle continuously applies glue at a height of 5 mm from the joint surface, and the length of each glue application is 30 mm. When the plastic liner (10) rotates one circle, the flat nozzle feeds 30 mm toward the center of the circle to cover the adhesive on the inner circle; the gluing operation of the tooth-shaped part can be completed in one circle, while the flat part needs to be applied with 3 to 4 circles; the entire gluing process is completed after the plastic liner (10) rotates 3 to 4 circles, and then the glue cylinder (401) is immediately reset to the initial position.

2. The automatic gluing device for the plastic liner and valve seat of a Type IV hydrogen storage bottle according to claim 1, characterized in that: The upper end of the pressing frame (303) has a hollow cylinder, and the valve seat connecting shaft (301) is movably inserted in the hollow cylinder. The side wall of the hollow cylinder has a limiting slot (307) that cooperates with the clamping strip (302), and the hole height of the limiting slot (307) is greater than the thickness of the clamping strip (302).

3. The automatic gluing device for the plastic liner and valve seat of a Type IV hydrogen storage bottle according to claim 1, characterized in that: It also includes a glue discharging mechanism of the glue cylinder (401), which includes a glue discharging motor (601), a glue cylinder support plate (602), a threaded rod (603), a glue rod (604), a slider (605) and a slider glue rod connecting member (606); The glue discharging motor (601) is installed on the glue barrel (401) through the glue barrel support plate (602), the output end of the glue discharging motor (601) is connected to the threaded rod (603), the slider (605) is slidably connected to the threaded rod (603), and the slider (605) is connected to the end of the glue rod (604) through the slider glue rod connecting member (606), and the front end pressure plate of the glue rod (604) is slidably set in the glue barrel (401).

4. The automatic gluing device for the plastic liner and valve seat of a Type IV hydrogen storage bottle according to claim 3, characterized in that: The liner support rotation mechanism includes a rotation mechanism and an liner support mechanism; The slewing mechanism comprises a large slewing bearing (701), a slewing support frame (702), a slewing motor (703) and an inner liner tray (704); the slewing support frame (702) is fixedly arranged at the lower end of the inner liner mounting platform (103); the outer ring of the large slewing bearing (701) is mounted on the inner side of the slewing support frame (702); and the inner ring of the large slewing bearing (701) is bolted to the upper and lower parts of the inner liner tray (704); The liner support mechanism comprises a driving gear (705), a driving gear (706), a supporting shell (707), a supporting shaft (708), a connecting rod (709), a supporting lever (710), a connecting disc (711) and a supporting motor (712), wherein the supporting shell (707) is mounted on the lower upper end of the liner tray (704), the rotary motor (703) is mounted on the rotary support frame (702) and the output end is connected to the bottom end of the supporting shell (707); the supporting shaft (708) is rotatably mounted at the center position of the inner cavity of the supporting shell (707), the driving gear (705) and the two connecting discs (711) are key-connected to the supporting shaft (708) in sequence from bottom to top along the axial direction of the supporting shaft (708), and the supporting motor (712) is mounted on the liner tray. The lower end and output end of the disk (704) extend to the inner cavity of the support shell (707) and are connected to the driving pinion (706). The driving pinion (706) is meshed with the driving gear (705) for transmission. The side wall of the support shell (707) and the connecting disk (711) are provided with a plurality of notches at equal heights along the circumferential direction. A plurality of connecting rods (709) are arranged at intervals along the circumference of the connecting disk (711) and are rotatably connected to the connecting disk (711). One end of the connecting rod (709) away from the connecting disk (711) is hingedly connected to a supporting lever (710). Each notch of the support shell (707) is rotatably connected to a supporting lever (710). The outer end of the supporting lever (710) extends to the outer side of the support shell (707) to abut against the inner wall of the plastic liner (10).

5. The automatic gluing device for the plastic liner and valve seat of a Type IV hydrogen storage bottle according to claim 1, characterized in that: The entire frame (101), the movable platform (102), the liner installation platform (103), the valve seat connection and clamping mechanism, the liner support rotation mechanism, and the adjustable glue-spraying mechanism are all coaxially arranged; the movable platform (102) is slidably connected to the slide rail inside the entire frame (101) through a sliding block, and a guide column (104) is provided at the lower end of the movable platform (102), and the guide column (104) moves through the liner installation platform (103) below.

6. A method for automatically gluing the plastic liner and valve seat of a type IV hydrogen storage bottle, based on the automatic gluing device for the plastic liner and valve seat of a type IV hydrogen storage bottle as claimed in any one of claims 1 to 5, characterized in that: The following steps are involved: S1: The plastic liner (10) is placed on the outer side of the support shell (707) on the liner tray (704), and the metal valve seat (9) is connected to the lower end of the valve seat connecting shaft (301); S2: operating the support motor (712) so that the driving pinion (706) drives the driving gear (705) to rotate, thereby driving the support shaft (708) and the connecting disc (711) connected thereto to rotate, and the connecting disc (711) drives the connecting rod (709) and the support lever (710) to move, so that the support lever (710) supports the inner wall of the plastic liner (10) and automatically centers the plastic liner (10); S3: operate the electric cylinder (201) to drive the movable platform (102) to descend, and at the same time operate the vertical cylinder (202) to drive the valve seat connection and pressing mechanism to descend to a preset position to avoid interference with the adjustable glue-dispensing mechanism; operate the horizontal cylinder (402) to adjust the swing arm (403) to a preset position, and operate the swing motor (404) to adjust the glue-dispensing cylinder (401) to an angle suitable for glue dispensing; S4: operating the rotary motor (703) to drive the large rotary bearing (701) to rotate, thereby causing the liner support mechanism and the plastic liner (10) to rotate synchronously, and simultaneously operating the glue discharge motor (601) to drive the glue rod (604) to move, thereby applying glue to the connection between the metal valve seat (9) and the plastic liner (10); S5: After the glue coating is completed, the vertical cylinder (202) and the electric cylinder (201) are operated to drive the metal valve seat (9) to continue to move downward, and the rotary motor (703) is operated to drive the plastic liner (10) to rotate until the inner lining of the plastic liner (10) and the tooth structure of the metal valve seat (9) are aligned. After alignment, the vertical cylinder (202) is continued to be operated so that the metal valve seat (9) is assembled on the plastic liner (10); S6: operating the compression cylinder (304) to drive the compression joint (305) down to 1 / 2-2 / 3 of the diameter of the metal valve seat (9), observing the value of the pressure sensor (306) at the compression joint (305), making the values ​​of the multiple pressure sensors (306) consistent, and curing the compressed metal valve seat (9) and the plastic liner (10) at room temperature for a preset time; S7: After curing is completed, the clamping cylinder (304) is retracted, the support motor (712) is operated to drive the support lever (710) to retract, the connection between the metal valve seat (9) and the valve seat connecting shaft (301) is disconnected, the electric cylinder (201) is operated to drive the valve seat connection and the clamping mechanism to rise, and the bonded plastic liner (10) and the metal valve seat (9) are taken out.

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