A cylinder heating device and method of use thereof

Abstract

The application discloses a gas cylinder heating device and a use method, and belongs to the technical field of gas cylinder processing. A rotating heating device which can drive the inner container to rotate and heat the inner container cavity is arranged on the inner container axis of a portal frame. The rotating heating device comprises a winding tool main body. The tail end of the winding tool main body extends into the inner container and is fixedly connected with the bottle opening of the inner container. An air inlet channel and an air outlet channel are arranged in the winding tool main body. The air inlet channel and the air outlet channel are respectively connected with the cavity of the inner container. A heating trolley is arranged on the portal frame and located outside the inner container. The heating trolley comprises a support. The support and the portal frame are connected through a sliding groove and a sliding block. The sliding groove is parallel to the inner container axis. A heating head is arranged on the support. The movement track of the heating head is consistent with the doffing point of the yarn sheet on the gas cylinder. In this way, the temperature difference between the to-be-stuck yarn sheet and the outer surface of the inner container and / or the yarn sheet which has been stuck on the outer surface of the inner container is reduced, the fiber wettability of the resin is improved, and the interlaminar shear strength of the composite layers is improved.

Description

Technical Field

[0001] This invention relates to the field of gas cylinder processing technology, and in particular to a gas cylinder heating device and its usage method. Background Technology

[0002] Filament winding is a common molding method for resin-based composite materials. It involves winding continuous fibers (or fabric tapes, pre-impregnated yarns) soaked in resin onto a mandrel according to a specific pattern, followed by curing and demolding. Dry winding is becoming the future trend of filament winding technology due to its good batch quality stability, fast winding speed, long pot life of the resin at room temperature, and better working environment.

[0003] In dry winding, the poor fluidity of the resin at room temperature results in poor fiber wettability, leading to low interlaminar shear strength in the composite layer. The magnitude of interlaminar shear strength directly affects the fiber strength utilization rate. This is one of the key technologies that the dry winding process needs to overcome. Existing technologies, such as utility model patent application number 201820403056.5 and invention patent application number 201310411000.6, first heat the insulation material using a heating device, and then wind the heated insulation material onto the inner liner. Since the temperature of the heated insulation material gradually decreases during the winding process, the fiber wettability and interlaminar bonding performance of the cylinder resin produced by this winding method need further improvement.

[0004] Therefore, how to design a gas cylinder heating device and its usage method to improve the resin's wettability to fibers and enhance the interlaminar shear strength of the composite is a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0005] The purpose of this invention is to address the deficiencies and shortcomings of the prior art by providing a gas cylinder heating device and its usage method, thereby improving the resin's wettability on fibers and enhancing the interlaminar shear strength of the composite.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] This invention provides a gas cylinder heating device, which includes a rotary heating device along the axial direction of the inner liner on a gantry frame. The rotary heating device includes a self-rotating winding fixture body. The end of the winding fixture body extends into and is fixedly connected to the bottle mouth of the inner liner. The interior of the winding fixture body is provided with an air inlet channel and an air outlet channel, which are respectively connected to the cavity of the inner liner.

[0008] The gantry frame is also equipped with a heating trolley located outside the inner liner. The heating trolley includes a support that can move along the axial direction of the inner liner. The support and the gantry frame are connected by a slide groove and a slider. The slide groove is parallel to the axis of the inner liner. The support is equipped with a heating head. The movement trajectory of the heating head is consistent with the point where the yarn falls on the gas cylinder.

[0009] Preferably, one end of the air inlet channel is provided with an air tube that can extend into the inner cavity of the inner liner. The air tube has a cavity that communicates with the air inlet channel. The length of the air tube is adapted to the length of the inner cavity. The other end of the air inlet channel is connected to a heat source through a hot air pipe. The main body of the winding fixture is provided with an air outlet. One end of the air outlet channel is connected to the air outlet, and the other end of the air outlet channel is connected to the cavity of the inner liner.

[0010] Preferably, the winding fixture body is further provided with an air inlet connected to the air inlet channel, and bearings are respectively provided on both axial sides of the air inlet. The inner ring of the bearing is fixedly connected to the winding fixture body, and the outer ring of the bearing is fixedly connected to the outer ring. The outer ring is connected to the heat source through the hot air pipe.

[0011] Preferably, the outer ring is provided with a through hole communicating with the air inlet, the sidewall of the through hole is provided with an internal thread, and the hot air duct is provided with an external thread that cooperates with the internal thread;

[0012] Preferably, each of the bearings is provided with a skeleton oil seal on the side away from the air inlet for sealing the gap between the outer ring and the winding tool body, and the bearings are provided with retaining rings at both axial ends;

[0013] Preferably, the main body of the winding tooling is provided with a shoulder and a retaining ring, wherein one of the skeleton oil seals is tightly fitted with the shoulder, and the other skeleton oil seal is tightly fitted with the retaining ring;

[0014] Preferably, the gantry includes two opposing columns and a crossbeam connecting the two columns. One column has a tail top, and the other column has a chuck. The chuck holds the winding fixture body. One end of the inner liner is threadedly connected to the winding fixture body, and the other end of the inner liner is rotatably connected to the tail top. A heating trolley is provided on one side of the gantry, and a winding trolley is provided on the opposite side. The heating trolley and the winding trolley are slidably connected to the crossbeam, and the movement trajectory of the winding trolley is parallel to the movement trajectory of the heating trolley.

[0015] Preferably, the heating trolley is provided with a support frame that can move up and down, the support frame is rotatably connected to a support via a connecting rod, and the support is fixedly connected to the heating head;

[0016] The present invention also provides a method of using a gas cylinder heating device, comprising the following:

[0017] S1. Preheat the main body and inner liner of the winding fixture, and place the main body and inner liner of the winding fixture in an oven at 100°C for two hours;

[0018] S2. Assemble all components. The hot air duct and air pipe are connected to the heated winding fixture body. After assembly, the air pipe extends into the cavity of the inner liner and the winding fixture body is threadedly connected to the inner liner. The gantry chuck clamps one end of the winding fixture body, and the other end of the inner liner is connected to the tail top.

[0019] S3. Winding the gas cylinder: Start the drive devices that drive the main body of the winding fixture to rotate and drive the heating trolley and winding trolley to move. While the gas cylinder rotates, the winding trolley and heating trolley move along the axial and radial directions of the gas cylinder to complete the winding of the inner liner. At the same time as winding, turn on the heat source and heating head connected to the hot air duct to heat the inner liner from the inside and outside respectively.

[0020] The present invention achieves the following technical effects compared to the prior art:

[0021] 1. This invention, by setting an inlet and an outlet airflow channel on the main body of the winding fixture, allows heat to flow into the cavity of the inner liner through the inlet airflow channel when the main body of the winding fixture rotates, thus heating the inner liner and increasing the temperature of the outer surface of the inner liner and the yarn already adhered to the outer surface of the inner liner. In addition, by moving the heating carriage along the axial direction of the inner liner, the yarn falling on the outer surface of the inner liner is heated, thereby reducing the temperature difference between the yarn to be bonded and the outer surface of the inner liner and / or the yarn already adhered to the outer surface of the inner liner, promoting the flow of resin on the yarn, improving the wettability of the resin on the fibers, improving the shear strength between the composite layers, and improving the strength of the fibers wound on the outer surface of the inner liner; thus achieving the effect of reducing fiber usage and saving production costs.

[0022] 2. This invention connects the heat source and the winding fixture body through a bearing, so that as the winding fixture body rotates with the winding machine spindle, the outer ring and hot air pipe can be fixed at a certain position to provide continuous hot air to the inner liner. This solves the problem that ordinary winding fixtures cannot continuously heat the rotating inner liner. Combined with the reciprocating motion of the heating carriage on the Y-axis and the telescopic motion on the Z-axis, it achieves the purpose of continuously winding fiber yarn in the inner liner while heating the inside and outside, thereby improving the production efficiency of the device.

[0023] 3. This invention can be adapted to inner liner of different sizes by changing the length of the air tube, which has a wide range of applications. The length of the air tube is matched with the length of the inner liner, so that the heat can be evenly distributed in all parts of the inner liner, improving the uniformity of the outer surface temperature of the inner liner and improving the quality of the gas cylinder formed after winding.

[0024] 4. This invention uses the sealing effect of the skeleton oil seal, inner and outer tapered threads, and inner liner bottle mouth sealing structure to enclose heat in the closed space formed by the outer ring and the main body of the winding tool. Then, the inner liner is heated by air circulation through the internal air passage of the main body of the winding tool, which reduces the amount of heat leakage and improves the heating efficiency of the inner liner. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the rotary heating device.

[0027] Figure 2 This is a schematic diagram of the overall structure of the gas cylinder heating device;

[0028] Figure 3 This is a schematic diagram of the overall structure of the gas cylinder heating device from another angle.

[0029] Figure 4 This is a schematic diagram of the hot air duct structure;

[0030] Figure 5 This is a magnified structural diagram of point A;

[0031] Figure 6 This is a magnified structural diagram of point B;

[0032] Figure 7 This is a magnified structural diagram of point C.

[0033] The components are as follows: 1. Gantry frame; 2. Inner liner; 3. Main body of winding fixture; 4. Inlet air channel; 5. Outlet air channel; 6. Heating trolley; 7. Support; 8. Heating head; 9. Air pipe; 10. Bearing; 11. Air outlet; 12. Air inlet; 13. Outer ring; 14. Hot air duct; 15. Slot; 16. Frame oil seal; 17. Shoulder; 18. Retaining ring; 19. Column; 20. Crossbeam; 21. Winding trolley; 22. Support frame; 23. Support. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] like Figures 1 to 6 As shown, the present invention provides a gas cylinder heating device, including an inner liner 2 mounted on a gantry frame 1. A rotary heating device is provided along the axial direction of the inner liner 2, which can both drive the inner liner 2 to rotate and heat the cavity of the inner liner 2. The rotary heating device includes a self-rotating winding fixture body 3. The end of the winding fixture body 3 extends into and is fixedly connected to the bottle mouth of the inner liner 2. The inside of the winding fixture body 3 is provided with an air inlet channel 4 and an air outlet channel 5, which are respectively connected to the cavity of the inner liner 2. A heating trolley 6 located outside the inner liner 2 is also provided on the gantry frame 1. The heating trolley 6 includes a support 7 that can move along the axial direction of the inner liner 2. The support 7 and the gantry frame 1 are connected by a sliding groove and a slider structure. The sliding groove is parallel to the axis of the inner liner 2. A heating head 8 is provided on the support 7. The movement trajectory of the heating head 8 is consistent with the yarn drop point on the inner liner 2.

[0037] When the main body 3 of the winding fixture drives the inner liner 2 to rotate, heat flows into the cavity of the inner liner 2 through the air intake channel 4, heating the side wall of the inner liner 2 and increasing the temperature of the outer surface of the inner liner 2 and the yarn already adhered to the outer surface of the inner liner 2. In addition, when the inner liner 2 rotates, the heating carriage 6 moves along the axial direction of the inner liner 2, heating the yarn falling on the outer surface of the inner liner 2, reducing the temperature difference between the yarn to be bonded and the outer surface of the inner liner 2 and / or the yarn already adhered to the outer surface of the inner liner 2, promoting the flow of resin on the yarn, improving the wettability of the resin to the fibers, improving the shear strength between the composite layers, and improving the strength of the fibers wound on the outer surface of the inner liner 2; it can also reduce the amount of fiber used and save production costs.

[0038] One end of the air inlet channel 4 is equipped with an air pipe 9 that can extend into the internal cavity of the inner liner 2. The air pipe 9 has a cavity that communicates with the air inlet channel 4. The length of the air pipe 9 is adapted to the length of the inner liner 2 cavity. The other end of the air inlet channel 4 is connected to a heat source through a hot air pipe 14. The winding fixture body 3 is equipped with an air outlet 11. One end of the air outlet channel 4 is connected to the air outlet 11, and the other end of the air outlet channel 5 is connected to the inner liner 2 cavity. The length of the air pipe 9 is adapted to the length of the inner liner 2 cavity, which can evenly heat the inner liner 2 and avoid uneven heat distribution inside the inner liner 2 due to the distance between the outlet of the air pipe 9 and the bottom of the inner liner 2 being too far. It can evenly heat the inner liner 2 along the length of the air pipe 9. Several small holes are evenly spaced, allowing heat to flow along the air pipe 9 and into the cavity of the inner liner 2 through the small holes, thus achieving uniform heating of all parts of the inner liner 2. Alternatively, the small holes can be omitted, and the heat can flow out only through the outlet at the end of the air pipe 9 and then diffuse to other parts of the cavity of the inner liner 2. To facilitate gas flow, a gap is provided between the end of the air pipe 9 and the cavity of the inner liner 2. The connection between the air pipe 9 and the air inlet channel 4 can be welding, bonding, screwing, etc. For easy disassembly and replacement, the present invention preferably uses a threaded connection between the air pipe 9 and the air inlet channel 4. To prevent the hot exhaust from scalding the operator, the air outlet 11 should be located as far away from the bottle opening of the inner liner 2 as possible.

[0039] The winding fixture body 3 is also provided with an air inlet 12 connected to the air inlet channel 4. Bearings 10 are provided on both sides of the air inlet 12. The inner ring of the bearing 10 is fixedly connected to the winding fixture body 3, and the outer ring of the bearing 10 is fixedly connected to the outer ring 13. The outer ring 13 is connected to the heat source through the hot air pipe 14. Specifically, the outer ring 13 is provided with an internal thread hole, and the hot air pipe 14 is provided with a corresponding external thread. The outer ring 13 is threadedly connected to the hot air pipe 14. In order to improve the sealing of the connection between the outer ring 13 and the hot air pipe 14, the external thread on the hot air pipe 14 and the internal thread on the outer ring 13 are tapered threads that can play a sealing role. The heat source is a hot air gun. The hot air duct 14 can be directly connected to the hot air gun, or it can be connected to the hot air gun through a flexible high-temperature duct. Preferably, the end of the hot air duct 14 furthest from the outer ring 13 is connected to the hot air gun through a flexible high-temperature duct. The two ends of the flexible high-temperature duct are clamped to secure the hot air duct 14 and the hot air gun, respectively. The hot air duct 14 is also provided with a groove 15 for fixing the hot air duct 14 with a rope.

[0040] Each bearing 10 is provided with a skeleton oil seal 16 on the side away from the air inlet 12 for sealing the gap between the outer ring and the winding fixture body 3. Both ends of the bearing 10 are provided with retaining rings. The winding fixture body 3 is provided with a shoulder 17 and a retaining ring 18 respectively. One skeleton oil seal 16 is tightly fitted with the shoulder 17, and the other skeleton oil seal 16 is tightly fitted with the retaining ring 18. The skeleton oil seal 16 is limited and fixed by the shoulder 17 and the retaining ring 18.

[0041] To improve the smoothness of rotation, the surface roughness of the contact positions between the inner surface of the outer ring 13 and the bearing 10 and the skeleton oil seal 16, as well as the contact positions between the outer surface of the winding fixture body 3 and the bearing 10 and the skeleton oil seal 16, is less than 1.6.

[0042] The sealing effect of the skeleton oil seal 16, the inner and outer tapered threads, and the sealing structure of the inner liner 2 bottle mouth can confine the heat within the sealed space formed by the outer ring 13 and the winding tool body 3. The inner liner 2 is heated by the air circulation inside the winding tool body 3, which reduces heat leakage and improves the heating efficiency of the inner liner 2.

[0043] The gantry frame 1 includes two opposing columns 19 and a crossbeam 20 connecting the two columns 19. One column 19 has a tail top, and the other column 19 has a chuck. The chuck holds the winding fixture body 3. The bottle mouth of the inner liner 2 is threadedly connected to the winding fixture body 3, and the bottom of the inner liner 2 is rotatably connected to the tail top. During operation, the drive mechanism drives the winding fixture body 3 to rotate, and the winding fixture body 3 drives the inner liner 2 to rotate. A heating trolley 6 is provided on one side of the gantry frame 1, and a winding trolley 21 is provided on the opposite side. The heating trolley 6 and the winding trolley 21 are slidably connected to the crossbeam 20, and the movement trajectory of the winding trolley 21 is parallel to the crossbeam 20. The movement trajectories of the heating trolley 6 are parallel; similar to the structure of the heating trolley 6, the winding trolley 21 also has a bracket 7. The top of the bracket 7 of the heating trolley 6 and the winding trolley 21 are respectively provided with a sliding groove. The two sliding grooves are connected to each other, and the total length of the two sliding grooves connected together is adapted to the width of the crossbeam 20 of the gantry frame 1. The crossbeam 20 of the gantry frame 1 is parallel to the axis of the inner liner 2. The movement path of the heating trolley 6 and the winding trolley 21 is restricted by the cooperation of the sliding groove and the crossbeam 20. Setting the heating trolley 6 and the winding trolley 21 on the two sides of the gantry frame 1 respectively can prevent the travel range of the heating trolley 6 and the winding trolley 21 from conflicting during the winding process.

[0044] The support frame 7 of the heating trolley 6 is equipped with a support frame 22 that can move up and down. The support frame 22 is connected to the support frame 7 through a slide structure. The support frame 22 is rotatably connected to the support 23 through a connecting rod. The support 23 is fixedly connected to the heating head 8. The heating head 8 includes, but is not limited to, hot air heating, infrared heating, etc. The Y-axis position of the heating head 8 can be adjusted by the movement of the support frame 7 along the crossbeam 20. The Z-axis and vertical position of the heating head 8 can be adjusted by the up and down movement of the support frame 22 and / or by rotating the connecting rod to adjust the angle of the support 23, so as to achieve the purpose of heating the entire gas cylinder in real time.

[0045] The present invention also provides a method of using a gas cylinder heating device, comprising the following:

[0046] S1. Preheat the main body 3 and inner liner 2 of the winding tooling, and place the main body 3 and inner liner 2 in an oven at 100°C for two hours.

[0047] Preheating the main body 3 and the inner liner 2 of the winding fixture can save time in heating the inner liner 2.

[0048] S2. Assemble the components. The hot air duct 14 and the air pipe 9 are connected to the preheated winding fixture body 3 respectively. After assembly, the air pipe 9 extends into the cavity of the inner liner 2 and the winding fixture body 3 is threadedly connected to the inner liner 2. The gantry chuck clamps one end of the winding fixture body and the other end of the inner liner 2 is connected to the tail top 21.

[0049] Specifically, when winding, first screw the hot air pipe 14 into the inner thread on the outer ring 13. The hot air pipe 14 is connected to the hot air gun through a flexible high-temperature air pipe. The two ends of the flexible high-temperature air pipe are clamped to the hot air pipe 14 and the hot air gun respectively. The hot air pipe 14 is fixed by the slot 15 on the hot air pipe 14. In this way, the outer ring 13 can be fixed at the same time. Then, screw the air pipe 9 into the winding fixture body 3. Connect the winding fixture body 3 to the bottle mouth of the inner liner 2 with threads. The bottom of the inner liner 2 is connected to the tail top 21 to complete the assembly between the components.

[0050] S3. Winding the gas cylinder: Start the drive devices that drive the winding fixture body 3 to rotate and drive the heating carriage 6 and winding carriage 21 to move. While the gas cylinder rotates, the winding carriage 21 and the heating carriage 6 move along the axial and radial directions of the gas cylinder to complete the winding of the inner liner 2. At the same time as winding, turn on the heat source and heating head 8 connected to the hot air pipe 14 to heat the inner liner 2 from the inside and outside respectively.

[0051] Specifically, the hot air gun is turned on, and hot air enters the outer ring 13 through the flexible high-temperature air duct and hot air pipe 14. Within the main body 3 of the winding fixture, two air paths form a hot air circulation to heat the inner liner 2. Simultaneously with the rotating heating winding fixture, the heating carriage 6 integrated into the winding machine gantry 1 is opened. The machine code is edited to ensure that the movement trajectory of the heating carriage 6 is as consistent as possible with the yarn landing point on the gas cylinder during winding. Combined with the reciprocating motion of the heating carriage 6 on the Y-axis and the telescopic motion on the Z-axis, real-time heating of the entire gas cylinder is achieved. If it is necessary to adjust the vertical position of the heating components, this can be achieved by moving the support frame 22 vertically and adjusting the angle of the support 23 by rotating the connecting rod, in conjunction with the telescopic motion of the heating carriage 6 on the Z-axis. When operations such as yarn splicing or cutting are required, the machine code program is interrupted, and the heating carriage 6 is moved to one side of the gantry 1 for operation. During the winding process, the surface temperature field of the gas cylinder can be monitored in real time using a temperature measuring gun, and the heating temperature can be adjusted by adjusting the output parameters of the hot air gun on the rotating heating winding fixture and the heating carriage 6.

[0052] It should be noted that, for those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A gas cylinder heating device, characterized in that: A rotary heating device is provided along the axial direction of the inner liner on the gantry frame, which can both drive the inner liner to rotate and heat the inner liner cavity. The rotary heating device includes a self-rotating winding fixture body. The end of the winding fixture body extends into and is fixedly connected to the bottle mouth of the inner liner. The inside of the winding fixture body is provided with an air inlet channel and an air outlet channel. The air inlet channel and the air outlet channel are respectively connected to the cavity of the inner liner. The gantry frame is also equipped with a heating trolley located outside the inner liner. The heating trolley includes a support that can move along the axial direction of the inner liner. The support and the gantry frame are connected by a slide groove and a slider. The slide groove is parallel to the axis of the inner liner. The support is equipped with a heating head. The movement trajectory of the heating head is consistent with the point where the yarn falls on the gas cylinder. One end of the air intake channel is provided with an air tube that can extend into the inner cavity of the inner liner. The air tube has a cavity that communicates with the air intake channel. The length of the air tube is adapted to the length of the inner cavity. The other end of the air intake channel is connected to a heat source through a hot air pipe. The winding fixture body is also provided with an air inlet connected to the air inlet channel. Bearings are provided on both sides of the air inlet. The inner ring of the bearing is fixedly connected to the winding fixture body, and the outer ring of the bearing is fixedly connected to the outer ring. The outer ring is connected to the heat source through the hot air pipe. Each of the bearings is provided with a skeleton oil seal on the side away from the air inlet for sealing the gap between the outer ring and the winding fixture body.

2. The gas cylinder heating device according to claim 1, characterized in that: The main body of the winding fixture is provided with an air outlet, one end of the air outlet channel is connected to the air outlet, and the other end of the air outlet channel is connected to the cavity of the inner liner.

3. The gas cylinder heating device according to claim 2, characterized in that: The outer ring is provided with a through hole that communicates with the air inlet, the side wall of the through hole is provided with an internal thread, and the hot air duct is provided with an external thread that cooperates with the internal thread.

4. The gas cylinder heating device according to claim 1, characterized in that: The bearing is provided with retaining rings at both axial ends.

5. The gas cylinder heating device according to claim 4, characterized in that: The winding fixture body is provided with a shoulder and a retaining ring respectively, wherein one of the skeleton oil seals is tightly fitted with the shoulder, and the other skeleton oil seal is tightly fitted with the retaining ring.

6. The gas cylinder heating device according to claim 1, characterized in that: The gantry frame includes two opposing columns and a crossbeam connecting the two columns. One column has a tail top, and the other column has a chuck. The chuck holds the winding fixture body. One end of the inner liner is threadedly connected to the winding fixture body, and the other end of the inner liner is rotatably connected to the tail top. A heating trolley is provided on one side of the gantry frame, and a winding trolley is provided on the opposite side. The heating trolley and the winding trolley are slidably connected to the crossbeam, and the movement trajectory of the winding trolley is parallel to the movement trajectory of the heating trolley.

7. The gas cylinder heating device according to claim 6, characterized in that: The heating trolley is equipped with a support frame that can move up and down. The support frame is rotatably connected to the support via a connecting rod, and the support is fixedly connected to the heating head.

8. A method of using a gas cylinder heating device, characterized in that: The gas cylinder heating device according to any one of claims 1 to 7 includes the following: S1. Preheat the main body and inner liner of the winding fixture, and place the main body and inner liner of the winding fixture in an oven at 100°C for two hours; S2. Assemble all components. The hot air duct and air pipe are connected to the heated winding fixture body. After assembly, the air pipe extends into the cavity of the inner liner and the winding fixture body is threadedly connected to the inner liner. The gantry chuck clamps one end of the winding fixture body, and the other end of the inner liner is connected to the tail top. S3. Winding the gas cylinder: Start the drive devices that drive the main body of the winding fixture to rotate and drive the heating trolley and winding trolley to move. While the gas cylinder rotates, the winding trolley and heating trolley move along the axial and radial directions of the gas cylinder to complete the winding of the inner liner. At the same time as winding, turn on the heat source and heating head connected to the hot air duct to heat the inner liner from the inside and outside respectively.

Images