Liner treatment method and cutting device

Abstract

The invention provides an inner container treatment method and a cutting device, and the inner container treatment method comprises the following steps: an inner container welding step: forming an inner container in a welding manner, wherein the inner container is made of a plastic material; a cooling step: cooling the inner container to a set temperature; a cutting step; and under the condition that the temperature of the inner container is not higher than the set temperature, curled edges formed at the welding seam positions on the inner wall and the outer wall of the inner container are cut so as to be removed. According to the device, the curled edges at the welding seam position of the inner container of the hydrogen storage bottle made of an existing plastic material can be effectively treated, and the curled edges on the inner wall and the outer wall of the inner container can be effectively and efficiently cut, so that the curled edges on the inner wall are effectively removed; the situation that the unremoved curled edge on the inner wall falls off in the expansion and contraction state that the non-metal inner container fiber full-winding gas cylinder is continuously inflated and deflated with hydrogen is avoided, and then the cleanliness and the working reliability of the interior of the gas cylinder are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen storage bottle processing, and in particular to an inner liner processing method and a cutting device. Background Art

[0002] At present, the development history of hydrogen storage cylinders has been more than 50 years. The existing hydrogen storage cylinders are generally divided into four types: all-metal cylinders (Type I), metal liner fiber hoop-wrapped cylinders (Type II), metal liner fiber fully wrapped cylinders (Type III) and non-metal liner fiber fully wrapped cylinders (Type IV); among them, Type I and Type II cylinders are relatively heavy and it is difficult to meet the requirements of unit mass hydrogen storage density; compared with Type III cylinders, Type IV cylinders generally use a non-metallic liner such as plastic plus a carbon fiber winding manufacturing method, which makes the cylinders have the advantages of lighter weight, lower cost, and higher mass hydrogen storage density, which is easy to open up the hydrogen storage market and has a wider range of applications.

[0003] The molding process of the above-mentioned Type IV gas cylinder liner can be injection molding, blow molding, extrusion molding or rotational molding; according to the different molding process routes, the plastic liner will be divided into four types: seamless plastic liner, plastic liner containing one circumferential weld joint, plastic liner containing two circumferential weld joints and blow molded liner; among them, the plastic liner containing a weld joint (plastic liner containing one circumferential weld joint and plastic liner containing two circumferential weld joints) is usually welded by laser welding, infrared welding or hot plate welding. After welding is completed, the plastic liner will produce a weld joint (i.e., curling) at the weld, and the curling will be produced on the inner wall and outer wall of the plastic liner, and the center height of the curling is greater than 0.

[0004] The liner processing method in the prior art is usually to use a weld curling cutting device to process the curling on the outer wall of the liner after welding is completed, while the curling on the inner wall is not processed. The curling on the inner wall may fall off when the non-metallic liner fiber fully wrapped gas cylinder (Type IV gas cylinder) is continuously filled and discharged with hydrogen, and the expansion and contraction state may occur, thereby reducing the cleanliness and working reliability of the interior of the gas cylinder. Summary of the invention

[0005] The present invention provides an inner liner processing method and a cutting device to solve the problem in the prior art that the weld curling on the inner wall of the inner liner of a hydrogen storage bottle cannot be processed, thereby reducing the internal cleanliness and working reliability of the hydrogen storage bottle.

[0006] In order to solve the above-mentioned problem, according to one aspect of the present invention, there is provided a method for processing an inner liner, comprising the following steps: an inner liner welding step: forming the inner liner by welding, the inner liner being made of plastic; a cooling step: cooling the inner liner to a set temperature; a cutting step: under the condition that the temperature of the inner liner is not higher than the set temperature, cutting the curled edges formed at the weld positions on the inner and outer walls of the inner liner to remove the curled edges.

[0007] Furthermore, the cutting step includes an inner wall cutting step, which includes: placing a cutting device in the inner tank, adjusting the cutting blade of the cutting device to abut against the curling edge on the inner wall, and controlling the cutting device to move along the curling edge to cut the curling edge.

[0008] Furthermore, the end of the inner liner has an opening, and the cutting blade of the cutting device can be extended and retracted along the radial direction of the inner liner; placing the cutting device in the inner liner includes: first shrinking the radial dimension of the cutting device to a dimension smaller than the opening, then inserting the cutting device into the inner liner from the opening, and then extending the cutting blade of the cutting device along the radial direction of the inner liner toward the curling edge.

[0009] Furthermore, the inner wall cutting step also includes: controlling the cutting knife to abut against the curled edge, and controlling the cutting knife to rotate around the central axis of the inner liner as the rotation axis to cut the curled edge. After the cutting is completed, cleaning the cutting residues remaining in the inner liner by blowing or dumping.

[0010] Furthermore, the cutting step also includes a fixing step and an outer wall cutting step, the outer wall cutting step is before the inner wall cutting step, and the fixing step is before the outer wall cutting step; the fixing step includes: fixing the inner liner on a cutting stand; the outer wall cutting step includes: placing a cutting device outside the inner liner, adjusting the cutting blade of the cutting device to abut against the curling edge on the outer wall, and controlling the cutting device to move along the curling edge to cut the curling edge.

[0011] Furthermore, the inner liner processing method also includes a non-destructive testing step, which is arranged after the cutting step, including: detecting the weld quality of the inner liner, and detecting whether the inner wall and outer wall of the inner liner are damaged during the cutting step; when damage is detected or the weld quality is unqualified, the inner liner is scrapped.

[0012] Furthermore, the inner liner processing method also includes an airtightness detection step, which is arranged after the non-destructive detection step, including: inflating the inner liner to a specified pressure, and sealing the inner liner, and detecting the airtightness of the inner liner according to the pressure change result of the inner liner; when it is detected that the airtightness of the inner liner is unqualified, the inner liner is scrapped.

[0013] According to another aspect of the present invention, a cutting device is provided, which is applied to the cutting step in the above-mentioned liner processing method. The cutting device includes a carrier, a first support assembly, a second support assembly and a cutting assembly for cutting the curled edge. One end of the first support assembly can rotate relative to the carrier, and the other end of the first support assembly is hinged to the cutting assembly; one end of the second support assembly can rotate relative to the carrier, and the other end of the second support assembly is hinged to the cutting assembly; wherein the angle between the first support assembly and the second support assembly is adjustable, thereby driving the distance of the cutting assembly relative to the carrier to change so as to get closer to or away from the curled edge of the liner.

[0014] Furthermore, the cutting device also includes a first adjustment component, which is movably arranged on the carrier; one end of the second support component is hinged to the first adjustment component; wherein the first adjustment component reciprocates along the extension direction of the carrier, driving the first support component and the second support component to move, so as to adjust the cutting component to be close to or away from the curling edge of the inner liner.

[0015] Furthermore, the cutting device also includes a second adjusting component, which is movably arranged on the carrier; one end of the first supporting component is hinged to the second adjusting component; wherein the first adjusting component and the second adjusting component move toward or away from each other, driving the first supporting component and the second supporting component to move simultaneously, so as to adjust the cutting component to be close to or away from the curling edge of the inner liner.

[0016] Furthermore, the first adjustment component includes a push rod and a driving part arranged on the carrier, one end of the push rod is connected to the driving part, and the other end of the push rod is rotatably connected to the second support assembly; the driving part is used to drive the push rod to reciprocate along the extension direction of the carrier; the carrier is a hollow shaft body, and a guide cavity is provided inside the hollow shaft body. The push rod is movably arranged in the guide cavity and is limitedly matched with the inner wall of the guide cavity.

[0017] Furthermore, both sides of the hollow shaft body are respectively provided with guide grooves, which are connected to the guide cavity; the first adjustment component also includes a limit rod, the middle part of which is connected to an end of the push rod away from the driving part; the two ends of the limit rod respectively extend into the guide grooves on both sides of the hollow shaft body, and respectively cooperate with the inner walls of the guide grooves to move along the guide grooves; the second support component includes a first connecting rod and a second connecting rod, one end of the first connecting rod and one end of the second connecting rod are respectively rotatably connected to the two ends of the limit rod; the other end of the first connecting rod and the other end of the second connecting rod are respectively rotatably connected to the cutting assembly.

[0018] Furthermore, the cutting assembly includes a cutting seat, an elastic gasket, a cutting knife and a limiting structure, the cutting seat is hinged to the first support assembly and the second support assembly respectively; the elastic gasket abuts against the cutting seat and the cutting knife respectively; the limiting structure is adjustably arranged on the cutting seat; the limiting structure has a fixed state and a disassembled state, in the fixed state, the limiting structure cooperates with the cutting knife to fix the cutting knife relative to the cutting seat; in the disassembled state, the limiting structure is out of contact with the cutting knife so that the cutting knife can be disassembled on the cutting seat.

[0019] Applying the technical solution of the present invention, the present invention provides a method for processing an inner liner, comprising the following steps: an inner liner welding step: forming an inner liner by welding, the inner liner being made of plastic; a cooling step: cooling the inner liner to a set temperature; a cutting step: cutting the curling formed at the weld position on the inner wall and outer wall of the inner liner under the condition that the temperature of the inner liner is not higher than the set temperature to remove the curling. The present invention proposes a method for processing an inner liner, which can effectively process the curling at the weld position of the inner liner of an existing hydrogen storage bottle made of plastic material, and can effectively and efficiently cut the curling on the inner wall and outer wall of the inner liner, thereby effectively removing the curling on the inner wall, and avoiding the unremoved curling on the inner wall from falling off when the non-metallic inner liner fiber fully wrapped gas cylinder is continuously filled and discharged with hydrogen in an expansion and contraction state, thereby improving the cleanliness and working reliability of the inside of the gas cylinder; the present invention realizes the curling cutting under the condition that the temperature of the inner liner is not higher than the set temperature by setting a cooling step, thereby avoiding the deformation of the inner liner during the cutting step due to high temperature, and improving the production yield of the inner liner; the present invention also proposes a cutting device , realizing efficient cutting of the curling at the weld position of the existing plastic hydrogen storage bottle inner liner, and is particularly suitable for cutting the curling in the narrow space of the inner wall, avoiding the curling on the inner wall that has not been removed from falling off when the non-metallic inner liner fiber fully wrapped gas cylinder is continuously filled and discharged with hydrogen in an expansion and contraction state, thereby improving the cleanliness and working reliability of the inside of the gas cylinder; by setting the angle between the first support component and the second support component to be adjustable, the cutting component is effectively driven to approach or move away from the curling of the inner liner, thereby ensuring the flexibility and reliability of cutting; the cutting device proposed by the present invention has a simple structure, reliable operation, easy assembly and low cost, and is suitable for large-scale promotion and use in the production process of hydrogen storage bottles with non-metallic inner liners. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0021] Figure 1 A schematic diagram showing the operation of the cutting device provided in an embodiment of the present invention cutting the curling edge on the inner wall of the inner container;

[0022] Figure 2 A partial structural schematic diagram of a cutting device provided by an embodiment of the present invention is shown;

[0023] Figure 3 A schematic diagram showing the specific structure of a cutting assembly provided by an embodiment of the present invention is shown;

[0024] Figure 4 A schematic diagram showing the internal structure of an inner container provided by an embodiment of the present invention is shown;

[0025] Figure 5 A schematic diagram showing the structure of the cutting device provided by an embodiment of the present invention in a retracted state;

[0026] Figure 6 A schematic structural diagram of a cutting device provided by an embodiment of the present invention in an extended state is shown;

[0027] Figure 7 A flow logic block diagram of a liner processing method provided by an embodiment of the present invention is shown;

[0028] Figure 8 A partial structural perspective view of the first adjustment component and the limiting rod in the cutting device provided by the embodiment of the present invention when working in cooperation with each other is shown;

[0029] Fig. 9 A specific structural perspective view of the second adjustment component and the limiting rod in the cutting device provided by the embodiment of the present invention when working in cooperation is shown.

[0030] The above drawings include the following reference numerals:

[0031] 10. Inner liner; 11. Opening; 12. Curled edge;

[0032] 20. Cutting device; 21. Carrier; 211. Guide groove; 22. First supporting assembly; 23. Second supporting assembly; 231. First connecting rod; 232. Second connecting rod; 24. Cutting assembly; 241. Cutting seat; 242. Elastic gasket; 243. Cutting knife; 244. Limiting structure; 25. First adjusting assembly; 251. Push rod; 26. Second adjusting assembly; 27. Limiting rod. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] like Figures 1 to 9 As shown, an embodiment of the present invention provides a liner processing method, comprising the following steps:

[0035] Inner liner welding step: forming the inner liner 10 by welding, the inner liner 10 is made of plastic;

[0036] Cooling step: cooling the inner container 10 to a set temperature;

[0037] Cutting step; under the condition that the temperature of the liner 10 is not higher than the set temperature, the curling 12 (such as the weld position formed on the inner wall and outer wall of the liner 10) is formed Figure 4 As shown) is cut to remove the curling edge 12.

[0038] The present invention provides a liner processing method, which can effectively treat the curling edge 12 (such as Figure 4 The curling edges 12 on the inner and outer walls of the liner 10 can be effectively cut, thereby effectively removing the curling edges 12 on the inner wall, and avoiding the unremoved curling edges 12 on the inner wall from falling off when the non-metallic liner fiber fully wrapped gas cylinder is continuously filled and discharged with hydrogen in an expansion and contraction state, thereby improving the cleanliness and working reliability of the interior of the gas cylinder; the present invention realizes the cutting of the curling edges 12 under the condition that the temperature of the liner 10 is not higher than the set temperature by setting a cooling step, thereby avoiding deformation of the liner 10 during the cutting step due to high temperature, and improving the production yield of the liner 10.

[0039] Specifically, the cutting step includes an inner wall cutting step, which includes: placing the cutting device 20 in the inner liner 10, adjusting the cutting blade 243 of the cutting device 20 to abut against the curling edge 12 on the inner wall, and controlling the cutting device 20 to move along the curling edge 12 to cut the curling edge 12. By setting the inner wall cutting step, accurate cutting of the curling edge 12 on the inner wall is achieved.

[0040] Specifically, the end of the inner liner 10 has an opening 11, and the cutting blade 243 of the cutting device 20 can be extended and retracted along the radial direction of the inner liner 10; placing the cutting device 20 in the inner liner 10 includes: firstly shrinking the radial dimension of the cutting device 20 to a dimension smaller than the opening 11, then inserting the cutting device 20 into the inner liner 10 from the opening 11, and then extending the cutting blade 243 of the cutting device 20 along the radial direction of the inner liner 10 toward the curling edge 12. In this way, the inner wall cutting step is adapted to the specific structure of the inner liner 10, thereby ensuring the complete cutting of the curling edge 12.

[0041] Specifically, the inner wall cutting step also includes: controlling the cutting blade 243 to abut against the curling edge 12 according to the set pressure, and controlling the cutting blade 243 to rotate and cut the curling edge 12 with the central axis of the inner liner 10 as the rotation axis, and after the cutting is completed, cleaning the cutting residues remaining in the inner liner 10 by blowing or dumping. By setting the cutting blade 243 to rotate and cut the curling edge 12 with the central axis of the inner liner 10 as the rotation axis, the curling edge 12 is ensured to be cut efficiently, and the problem of incomplete cutting of part of the curling edge 12 is avoided.

[0042] Specifically, the cutting step further includes a fixing step and an outer wall cutting step, the outer wall cutting step is before the inner wall cutting step, and the fixing step is before the outer wall cutting step; the fixing step includes: fixing the inner liner 10 on the cutting stand; the outer wall cutting step includes: placing the cutting device 20 outside the inner liner 10, adjusting the cutting blade 243 of the cutting device 20 to abut against the curling edge 12 on the outer wall, and controlling the cutting device 20 to move along the curling edge 12 to cut the curling edge 12. This arrangement ensures the orderliness and reliability of the cutting steps.

[0043] like Figure 7 As shown, the liner processing method further includes a nondestructive testing step, which is arranged after the cutting step, and includes: detecting the weld quality of the liner 10, and detecting whether the inner wall and the outer wall of the liner 10 are damaged during the cutting step; when damage is detected or the weld quality is unqualified, the liner 10 is scrapped. By setting the nondestructive testing step, the durability and safety of the liner 10 after cutting the curling edge 12 are guaranteed.

[0044] like Figure 7 As shown, the liner processing method further includes an airtightness detection step, which is arranged after the nondestructive detection step, and includes: inflating the inner liner 10 to a specified pressure, sealing the liner 10, and detecting the airtightness of the liner 10 according to the pressure change result of the liner 10; when the airtightness of the liner 10 is detected to be unqualified, the liner 10 is scrapped. By setting the airtightness detection step, the durability and safety of the liner 10 after cutting the curling edge 12 are further guaranteed, and the occurrence of air leakage problems of the liner 10 is effectively reduced.

[0045] In a specific embodiment of the present invention, in the air tightness test step, the inner liner 10 is inflated to a specified pressure range of 1 to 2 bar. If the inner liner 10 is subsequently tested to be leak-proof within a certain period of time (i.e., there is no obvious change in the internal pressure), the air tightness test is qualified.

[0046] like Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, the present invention also provides a cutting device, which is applied to the cutting step in the above-mentioned liner processing method. The cutting device 20 includes a carrier 21, a first support assembly 22, a second support assembly 23 and a cutting assembly 24 for cutting the curling edge 12. One end of the first support assembly 22 can rotate relative to the carrier 21, and the other end of the first support assembly 22 is hinged to the cutting assembly 24; one end of the second support assembly 23 can rotate relative to the carrier 21, and the other end of the second support assembly 23 is hinged to the cutting assembly 24; wherein, the angle between the first support assembly 22 and the second support assembly 23 can be adjusted to drive the cutting assembly 24 to approach or move away from the curling edge 12 of the liner 10.

[0047] The cutting device proposed in the present invention realizes the efficient cutting of the curled edge 12 at the weld position of the existing plastic hydrogen storage bottle inner liner, and is particularly suitable for the cutting of the curled edge 12 in the narrow space of the inner wall, thereby avoiding the curled edge 12 on the inner wall that has not been removed from falling off when the non-metallic inner liner fiber fully wrapped gas cylinder is continuously filled and discharged with hydrogen in an expansion and contraction state, thereby improving the cleanliness and working reliability of the interior of the gas cylinder; by setting the angle between the first support component 22 and the second support component 23 to be adjustable, the cutting component 24 is effectively driven to approach or move away from the curled edge 12 of the inner liner 10, thereby ensuring the flexibility and reliability of the cutting; the cutting device 20 proposed in the present invention has a simple structure, reliable operation, is easy to assemble and has low cost, and is suitable for large-scale promotion and use in the production process of hydrogen storage bottles with non-metallic inner liners 10.

[0048] like Figure 1 As shown, the carrier 21 is rotatably arranged, and the carrier 21 can be connected to an external rotating device to drive the cutting assembly 24 to rotate along the central axis of the carrier 21 to cut the curling edge 12. By arranging the carrier 21 to be connected to the external rotating device, the efficiency and reliability of the cutting device 20 in cutting the curling edge 12 are guaranteed.

[0049] It should be noted that, in a specific embodiment of the present invention, the external rotating device can be an existing turning device, including a turning table and a rotating chuck, the inner liner 10 is fixed on the turning table, and the carrier 21 is clamped on the rotating chuck. The rotating chuck rotates to drive the cutting device 20 to rotate and cut the curled edge 12 of the inner liner; the outer circumference of the carrier 21 is cylindrical to facilitate the clamping of the rotating chuck.

[0050] like Figure 2 , Figure 5 and Figure 6 As shown, the cutting device 20 further includes a first adjustment component 25, which is movably disposed on the carrier 21; one end of the second support component 23 is hinged to the first adjustment component 25; wherein the first adjustment component 25 reciprocates along the extension direction of the carrier 21, driving the first support component 22 and the second support component 23 to move, so as to adjust the cutting component 24 to be close to or away from the curling edge 12 of the liner 10. By providing the first adjustment component 25, automatic adjustment of the first support component 22 and the second support component 23 is achieved, effectively replacing the manual adjustment method, thereby ensuring cutting accuracy.

[0051] like Figure 2 , Figure 5 and Figure 6 As shown, the cutting device 20 further includes a second adjustment component 26, which is movably disposed on the carrier 21; one end of the first support component 22 is hinged to the second adjustment component 26; wherein the first adjustment component 25 and the second adjustment component 26 move toward or away from each other, driving the first support component 22 and the second support component 23 to move simultaneously, so as to adjust the cutting component 24 to be close to or away from the curling edge 12 of the liner 10. By arranging the first adjustment component 25 and the second adjustment component 26 to work in coordination, the adjustment accuracy of the first support component 22 and the second support component 23 is further ensured.

[0052] Optionally, the first adjustment component 25 and the second adjustment component 26 have the same structure. By setting the first adjustment component 25 and the second adjustment component 26 to have the same structure, subsequent unified replacement and maintenance of the first adjustment component 25 and the second adjustment component 26 are facilitated.

[0053] like Figure 2 As shown, the first adjustment assembly 25 includes a push rod 251 and a driving part arranged on the carrier 21, one end of the push rod 251 is connected to the driving part, and the other end of the push rod 251 is rotatably connected to the second support assembly 23; the driving part is used to drive the push rod 251 to reciprocate along the extension direction of the carrier 21; the carrier 21 is a hollow shaft body, and the hollow shaft body has a guide cavity inside, and the push rod 251 is movably arranged in the guide cavity and is limitedly matched with the inner wall of the guide cavity. This arrangement not only ensures the working reliability of the first adjustment assembly 25, but also simplifies the structure of the first adjustment assembly 25, thereby effectively reducing the cost.

[0054] It should be noted that, in a specific embodiment of the present invention, the driving part is an electric telescopic cylinder or a hydraulic telescopic cylinder.

[0055] like Figure 2 , Figure 5, Figure 6 and Figure 8 As shown, both sides of the hollow shaft body are also provided with guide grooves 211, which are connected to the guide cavity; the first adjustment assembly 25 also includes a limit rod 27, the middle part of which is connected to the end of the push rod 251 away from the driving part; the two ends of the limit rod 27 are respectively extended into the guide grooves 211 on both sides of the hollow shaft body, and are respectively limited and matched with the inner wall of the guide groove 211 to move along the guide groove 211; the second support assembly 23 includes a first connecting rod 231 and a second connecting rod 232, as shown Figure 8 As shown, one end of the first connecting rod 231 and one end of the second connecting rod 232 are rotatably connected to the two ends of the limiting rod 27 respectively; the other end of the first connecting rod 231 and the other end of the second connecting rod 232 are rotatably connected to the cutting assembly 24 respectively. This arrangement ensures that the first adjustment assembly 25 works reliably on the carrier 21.

[0056] Optionally, the first support assembly 22 has the same structure as the second support assembly 23. By setting the first support assembly 22 and the second support assembly 23 to have the same structure, subsequent unified replacement and maintenance of the first support assembly 22 and the second support assembly 23 are facilitated.

[0057] It should be noted that, in a specific embodiment of the present invention, Fig. 9 As shown, the second adjusting component 26 also includes a limit rod 27, a push rod structure (the same structure as the push rod 251) and a driving part (the same structure as the driving part of the first adjusting component 25), and the middle part of the limit rod 27 is connected to the end of the push rod structure of the second adjusting component 26 away from the driving part; the two ends of the limit rod 27 respectively extend into the guide grooves 211 on both sides of the hollow shaft body, and respectively cooperate with the inner walls of the guide grooves 211 to move along the guide grooves 211; by setting the second adjusting component 26 to include the limit rod 27, the hinge between one end of the first support component 22 and the second adjusting component 26 is realized.

[0058] like Figure 3As shown, the cutting assembly 24 includes a cutting seat 241, an elastic gasket 242, a cutting blade 243 and a limiting structure 244. The cutting seat 241 is hinged to the first supporting assembly 22 and the second supporting assembly 23 respectively; the elastic gasket 242 is respectively in contact with the cutting seat 241 and the cutting blade 243; the limiting structure 244 is adjustably arranged on the cutting seat 241; the limiting structure 244 has a fixed state and a disassembly state. In the fixed state, the limiting structure 244 and the cutting blade 243 are limitedly matched to fix the cutting blade 243 relative to the cutting seat 241; in the disassembly state, the limiting structure 244 is out of contact with the cutting blade 243, so that the cutting blade 243 can be disassembled on the cutting seat 241. Such a configuration not only ensures the simplification of the structure of the cutting assembly 24, but also enables the cutting blade 243 to be quickly replaced, thereby improving the applicability of the cutting assembly 24.

[0059] It should be noted that: in a specific embodiment of the present invention, the cutting tool 243 adopts a common turning tool structure, which includes a blade body and a blade arranged on the blade body, and the blade abuts against the curled edge 12 for cutting; a cutting angle is formed between the blade and the curled edge 12, and the cutting angle determines the cutting performance and cutting force of the cutting tool 243. The cutting angle can be flexibly set according to parameters such as the size, hardness and shape of the actual curled edge 12 to ensure the cutting effect of the cutting tool 243 on the curled edge 12; the limiting structure 244 is in a fixed state, and cooperates with the blade body of the cutting tool 243 to fix the cutting tool 243 relative to the cutting seat 241; the cutting tool 243 can be made of materials such as cemented carbide, high-speed steel or ceramics.

[0060] In another specific embodiment of the present invention, in order to further simplify the structure, the structure in which the cutting seat 241 is hinged to the first supporting assembly 22 and the second supporting assembly 23 can adopt the following scheme: Figure 3 As shown, the cutting seat 241 has a pin shaft, which passes through the first support component 22 and the second support component 23 in sequence and rotates with the two. That is, the hinge structure of the first support component 22, the second support component 23 and the cutting seat 241 is combined and designed to realize the rotational freedom of the first support component 22 and the second support component 23 on the cutting seat 241.

[0061] In summary, the present invention provides a liner processing method and a cutting device. The liner processing method proposed in the present invention can effectively process the curling edge 12 at the weld position of the existing plastic hydrogen storage bottle liner, and can effectively and efficiently cut the curling edge 12 on the inner wall and the outer wall of the liner 10, thereby effectively removing the curling edge 12 on the inner wall, and avoiding the unremoved curling edge 12 on the inner wall to fall off when the non-metallic liner fiber fully wrapped gas cylinder is continuously filled and discharged with hydrogen in an expansion and contraction state, thereby improving the cleanliness and working reliability of the inside of the gas cylinder; the present invention realizes the cutting of the curling edge 12 under the condition that the temperature of the liner 10 is not higher than the set temperature by setting a cooling step, thereby avoiding the deformation of the liner 10 during the cutting step due to high temperature, and improving the production yield of the liner 10; the present invention The cutting device 20 proposed in the invention realizes the efficient cutting of the curled edge 12 at the weld position of the existing plastic hydrogen storage bottle inner liner, and is particularly suitable for the cutting of the curled edge 12 in the narrow space of the inner wall, thereby avoiding the curled edge 12 on the inner wall that has not been removed from falling off when the non-metallic inner liner fiber fully wrapped gas cylinder is continuously filled and discharged with hydrogen in an expansion and contraction state, thereby improving the cleanliness and working reliability of the inside of the gas cylinder; by setting the angle between the first support component 22 and the second support component 23 to be adjustable, the cutting component 24 is effectively driven to approach or move away from the curled edge 12 of the inner liner 10, thereby ensuring the flexibility and reliability of cutting; the cutting device 20 proposed in the present invention has a simple structure, reliable operation, easy assembly and low cost, and is suitable for large-scale promotion and use in the production process of hydrogen storage bottles with non-metallic inner liners 10.

[0062] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0063] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0064] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0065] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0066] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A liner processing method, characterized in that: The steps include: Inner liner welding step: forming the inner liner (10) by welding, wherein the inner liner (10) is made of plastic material; Cooling step: cooling the inner container (10) to a set temperature; Cutting step: Under the condition that the temperature of the inner pot (10) is not higher than the set temperature, the curling edge (12) formed at the welding position on the inner wall and the outer wall of the inner pot (10) is cut to remove the curling edge (12).

2. The liner processing method according to claim 1, characterized in that: The cutting step includes an inner wall cutting step, and the inner wall cutting step includes: placing a cutting device (20) in the inner liner (10), adjusting the cutting blade (243) of the cutting device (20) to abut against the curling edge (12) on the inner wall, and controlling the cutting device (20) to move along the curling edge (12) to cut the curling edge (12).

3. The liner processing method according to claim 2, characterized in that: The end of the inner liner (10) has an opening (11), and the cutting blade (243) of the cutting device (20) can be extended and retracted along the radial direction of the inner liner (10); placing the cutting device (20) in the inner liner (10) comprises: firstly shrinking the radial dimension of the cutting device (20) to a dimension smaller than that of the opening (11), then inserting the cutting device (20) into the inner liner (10) from the opening (11), and then extending the cutting blade (243) of the cutting device (20) along the radial direction of the inner liner (10) toward the curling edge (12).

4. The liner processing method according to claim 2, characterized in that: The inner wall cutting step also includes: controlling the cutting knife (243) to abut against the curling edge (12), and controlling the cutting knife (243) to rotate and cut the curling edge (12) with the central axis of the inner liner (10) as the rotation axis, and after the cutting is completed, cleaning the cutting residues remaining in the inner liner (10) by blowing or dumping.

5. The liner processing method according to claim 2, characterized in that: The cutting step further comprises a fixing step and an outer wall cutting step, wherein the outer wall cutting step is performed before the inner wall cutting step, and the fixing step is performed before the outer wall cutting step; the fixing step comprises: fixing the inner liner (10) on a cutting stand; the outer wall cutting step comprises: placing the cutting device (20) outside the inner liner (10), adjusting the cutting blade (243) of the cutting device (20) to abut against the curling edge (12) on the outer wall, and controlling the cutting device (20) to move along the curling edge (12) to cut the curling edge (12).

6. The liner processing method according to claim 1, characterized in that: The liner processing method further comprises a nondestructive testing step, which is arranged after the cutting step and comprises: testing the quality of the weld of the liner (10), and testing whether damage is caused to the inner wall and the outer wall of the liner (10) during the cutting step; when damage is detected or the weld quality is unqualified, the liner (10) is scrapped.

7. The liner processing method according to claim 6, characterized in that: The inner liner processing method further comprises an airtightness detection step, which is arranged after the non-destructive detection step and comprises: inflating the inner liner (10) to a specified pressure, and sealing the inner liner (10), and detecting the airtightness of the inner liner (10) according to the pressure change result of the inner liner (10); when it is detected that the airtightness of the inner liner (10) is unqualified, the inner liner (10) is scrapped.

8. A cutting device, characterized in that: The cutting step in the liner processing method according to any one of claims 1 to 7, the cutting device (20) comprises a carrier (21), a first support assembly (22), a second support assembly (23) and a cutting assembly (24) for cutting the curling edge (12), one end of the first support assembly (22) can rotate relative to the carrier (21), and the other end of the first support assembly (22) is hinged to the cutting assembly (24); one end of the second support assembly (23) can rotate relative to the carrier (21), and the other end of the second support assembly (23) is hinged to the cutting assembly (24); wherein the angle between the first support assembly (22) and the second support assembly (23) is adjustable, so as to drive the distance of the cutting assembly (24) relative to the carrier (21) to change so as to approach or move away from the curling edge (12) of the liner (10).

9. The cutting device according to claim 8, characterized in that: The cutting device (20) further comprises a first adjusting component (25), which is movably arranged on the carrier (21); one end of the second supporting component (23) is hinged to the first adjusting component (25); wherein the first adjusting component (25) reciprocates along the extension direction of the carrier (21), driving the first supporting component (22) and the second supporting component (23) to move, so as to adjust the cutting component (24) to be close to or away from the curling edge (12) of the inner liner (10).

10. The cutting device according to claim 9, characterized in that The cutting device (20) further comprises a second adjusting component (26), which is movably arranged on the carrier (21); one end of the first supporting component (22) is hinged to the second adjusting component (26); wherein the first adjusting component (25) and the second adjusting component (26) move towards or away from each other, driving the first supporting component (22) and the second supporting component (23) to move simultaneously, so as to adjust the cutting component (24) to be close to or away from the curling edge (12) of the inner liner (10).

11. The cutting device according to claim 9, characterized in that: The first adjustment component (25) includes a push rod (251) and a driving part arranged on the carrier (21), one end of the push rod (251) is connected to the driving part, and the other end of the push rod (251) is rotatably connected to the second support component (23); the driving part is used to drive the push rod (251) to reciprocate along the extension direction of the carrier (21); the carrier (21) is a hollow shaft body, and a guide cavity is provided inside the hollow shaft body. The push rod (251) is movably arranged in the guide cavity and is limitedly matched with the inner wall of the guide cavity.

12. The cutting device according to claim 11, characterized in that The two sides of the hollow shaft body are also respectively provided with guide grooves (211), and the guide grooves (211) are connected to the guide cavity; the first adjustment component (25) also includes a limit rod (27), the middle part of the limit rod (27) is connected to an end of the push rod (251) away from the driving part; the two ends of the limit rod (27) respectively extend into the guide grooves (211) on both sides of the hollow shaft body, and respectively cooperate with the inner walls of the guide grooves (211) to move along the guide grooves (211); the second supporting component (23) includes a first connecting rod (231) and a second connecting rod (232), one end of the first connecting rod (231) and one end of the second connecting rod (232) are respectively rotatably connected to the two ends of the limit rod (27); the other end of the first connecting rod (231) and the other end of the second connecting rod (232) are respectively rotatably connected to the cutting component (24).

13. The cutting device according to claim 8, characterized in that The cutting assembly (24) comprises a cutting seat (241), an elastic gasket (242), a cutting knife (243) and a limiting structure (244); the cutting seat (241) is hinged to the first supporting assembly (22) and the second supporting assembly (23) respectively; the elastic gasket (242) is respectively in contact with the cutting seat (241) and the cutting knife (243); the limiting structure (244) is adjustably arranged on the cutting seat (241); the limiting structure (244) has a fixed state and a disassembled state, in the fixed state, the limiting structure (244) is limitedly matched with the cutting knife (243) to fix the cutting knife (243) relative to the cutting seat (241); in the disassembled state, the limiting structure (244) is out of contact with the cutting knife (243) to make the cutting knife (243) detachable on the cutting seat (241).

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