Gas cylinder plastic inner core fiber winding machine and winding inner core forming method thereof

Abstract

The present invention discloses a gas cylinder plastic core fiber winding machine and a winding core molding method thereof, and relates to the field of gas cylinder plastic core manufacturing, including a machine bed, one end of the machine bed is fixedly installed with a reduction motor, the inside of the machine bed is rotatably installed with a bearing assembly, and one side of the bearing assembly is rotatably connected with a winding assembly. In the process of winding molding of the present invention, the bearing rod itself keeps a state of continuous rotation, and the winding assembly is also rotating around the bearing rod. The double-rod rotation method can effectively reduce the pulling force on the fiber, and can protect the fiber in the process of gradually increasing thickness. At the same time, the protective cylinder in the winding assembly will also move along the direction of the screw rod to ensure that the fiber can be completely wound on the surface of the bearing rod, so as to ensure the stability and uniformity of the inner core molding, and avoid the situation of a large amount of fiber accumulation in local areas.

Description

Technical Field

[0001] The invention relates to the technical field of manufacturing a plastic inner core of a gas cylinder, in particular to a fiber winding machine for a plastic inner core of a gas cylinder and a winding inner core molding method thereof. Background Art

[0002] The plastic inner core of a gas cylinder is the internal structure of the gas cylinder, usually made of high pressure and corrosion resistant plastic materials. Its main function is to withstand the pressure of the internal gas and ensure the stable and safe operation of the gas cylinder. When making the plastic inner core of a gas cylinder, a fiber winding machine is required.

[0003] For example, in the “A plastic liner molding mold for a gas cylinder and a plastic liner molding method for a gas cylinder” with publication number CN112917830B, the plastic liner molding mold for the gas cylinder comprises: a mold core; a front mold, the front mold is arranged at the front side of the mold core, and an inner liner injection molding area is formed between the front mold and the mold core, and the inner liner injection molding area has a thickness thinning area; a rear mold, the rear mold is arranged at the periphery of the mold core and located at the rear side of the front mold, and the rear mold is in contact with the inner liner injection molding area; an end mold having a material guiding cavity, the end mold is arranged on the front mold, and the material guiding cavity is connected to the inner liner injection molding area, and the connection between the material guiding cavity and the inner liner injection molding area is adjacent to the thickness thinning area.

[0004] However, in the prior art, during the winding process of the plastic inner core fiber, as the winding continues, the thickness of the target surface fiber will become thicker and thicker. At this time, the linear speed of the inner core surface fiber winding will become faster and faster, and the fiber misalignment problem will easily occur, resulting in excessive fiber winding in some areas. In addition, the traditional winding molding method usually uses a single rod to rotate. As the linear speed increases, the pulling force on the fiber will continue to increase. At this time, the winding machine is likely to break the fiber. Summary of the invention

[0005] The purpose of the present invention is to provide a gas cylinder plastic inner core fiber winding machine and a winding inner core molding method thereof, so as to solve the problem proposed in the above background technology that the thickness of the target surface fiber will become thicker and thicker, and the linear speed of the fiber winding on the inner core surface will become larger and larger. At this time, the problem of fiber misalignment is likely to occur, resulting in the problem of excessive fiber winding in some areas.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a gas cylinder plastic inner core fiber winding machine and a winding inner core forming method thereof, comprising a machine bed, one end of which is fixedly mounted with a reduction motor, a bearing assembly is rotatably mounted inside the machine bed, and one side of the bearing assembly is rotatably connected with a winding assembly;

[0007] The winding assembly includes a screw rod, a protective tube, a sleeve and a accommodating shell, one end of the screw rod is rotatably connected to the second gear, one end of the screw rod is fixedly connected to a docking block, the protective tube is sleeved on the outer wall of the screw rod, the sleeve is rotatably connected to the outer wall of the protective tube, the accommodating shell is clamped on the outer wall of the sleeve, fibers are stored inside the accommodating shell, one side of the second gear is rotatably connected to the transmission block, one side of the transmission block is fixedly connected to a guide rod, a connecting piece is fixedly installed on the outer wall of the sleeve, and the guide rod passes through the connecting piece;

[0008] The bearing assembly includes a bearing rod and a first gear, the first gear is fixedly mounted on one end of the bearing rod, a docking block is fixedly mounted on the other end of the bearing rod, the docking block is rotatably mounted on the outer wall of the docking block, and the first gear is meshedly connected with the second gear.

[0009] Preferably, the output end of the reduction motor is fixedly connected with a transmission rod, the transmission rod is rotatably mounted inside the machine bed, and the other end of the transmission rod is fixedly connected to one end of the bearing rod.

[0010] Preferably, a limit block is fixedly installed at the junction of the bearing rod and the first gear, and the limit block is used to determine the initial position of the fiber during winding, and a limit ring is fixedly installed on the inner wall of the machine bed.

[0011] Preferably, the edge of the second gear is slidably connected to the limiting ring, and an engaging groove is provided at the junction of the second gear and the limiting ring.

[0012] Preferably, a ratchet is fixedly mounted on the outer wall of the protective tube, the ratchet is located at the junction of the protective tube and the sleeve, and the connecting piece is located on one side of the ratchet.

[0013] Preferably, a blocking piece is fixedly mounted on one side of the connecting piece, a clamping block is rotatably mounted on one side of the connecting piece, one end of the clamping block is clamped on the outer wall of the ratchet, and one side of the clamping block overlaps one side of the blocking piece.

[0014] Preferably, a receiving block is fixedly mounted on the outer wall of the protective tube, a docking rod is rotatably mounted inside the receiving block, and one end of the docking rod is slidably connected to the thread groove of the screw rod.

[0015] Preferably, one side of the accommodating shell is plugged into the outer wall of the accommodating block, a positioning slot is provided at the junction of the accommodating block and the accommodating shell, and a connecting rod is plugged between the second gear and the transmission block.

[0016] A method for forming a winding inner core of a gas cylinder plastic inner core fiber winding machine comprises the following steps:

[0017] S1. Assemble the bearing assembly and the winding assembly: rotate the bearing rod and install it on the machine bed, then mesh the second gear with the first gear, and limit the second gear in the limiting ring;

[0018] S2, sleeve the protective tube onto the outer wall of the screw rod, then install the sleeve onto the protective tube, and simultaneously install the accommodating shell onto the side of the accommodating block, and then connect the transmission block to the second gear;

[0019] S3, winding one end of the fiber in the containing shell onto the positioning block, then starting the reduction motor to drive the bearing rod and the first gear through the transmission rod, the rotation of the bearing rod can wrap the limit to itself, and the rotation of the first gear can drive the second gear;

[0020] S4. The rotation of the second gear will drive the connecting piece through the guide rod, and the block on the side of the connecting piece will be used to push the ratchet to achieve the purpose of pushing the entire protective tube to rotate. The docking rod in the accommodating block and the screw rod are used in conjunction to promote the protective tube to move along the direction of the screw rod;

[0021] S5. The rotation of the bearing rod and the movement of the protective tube can wind the fiber onto the surface of the bearing rod, thus completing the winding molding of the plastic inner core.

[0022] Preferably, in step S3, the first gear pushing the second gear further comprises the following steps:

[0023] S31, the second gear has only one limiting structure, namely, a limiting ring. Under the push of the first gear, the second gear will both rotate and move around the first gear, thereby winding the fiber onto the surface of the bearing rod;

[0024] S32, the second gear is connected to the transmission block by a connecting rod. When partial winding is required, the connecting rod can be pulled out to separate the second gear and the transmission block. When rewinding is required, the sleeve can be rotated in the reverse direction to adjust the state of the second gear and release the already wound fiber.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. In the present invention, a winding assembly is arranged at the edge of the bearing assembly. During the winding process, the bearing rod itself keeps rotating and the winding assembly rotates around the bearing rod. The double-rod rotation can effectively reduce the pulling force on the fiber and protect the fiber in the process of gradually increasing thickness. At the same time, the protective tube in the winding assembly will also move along the direction of the screw rod to ensure that the fiber can be completely wound around the surface of the bearing rod, thereby ensuring the stability and uniformity of the inner core molding and avoiding the accumulation of a large amount of fibers in local areas.

[0027] 2. In the present invention, the use of the limit ring can not only ensure that the position of the second gear is limited so that it can rotate and move correctly, but also improve the stability and coordination of the cooperation between the various components. Accurately controlling the position of the second gear through the limit ring can prevent structural dislocation and ensure the normal operation of the overall mechanical device. In addition, the design of connecting one end of the screw rod with the docking round block at the end of the load-bearing rod through the docking block can not only limit the position of the two ends of the winding assembly, but also further improve the stability of the overall structure. Such a design can ensure that the connection between the screw rod and the load-bearing rod is firm to prevent loosening or falling off. At the same time, it can also ensure that the winding assembly will not be offset or unstable during operation, thereby improving the work efficiency and safety of the overall device.

[0028] 3. In the present invention, in this device, the setting of the block and the ratchet plays a key role. They can make the connection between the protective tube and the sleeve have a certain degree of flexibility and controllability. When the second gear rotates, the edge of the block and the ratchet cooperate with each other to push the entire protective tube to rotate. This design enables the entire device to operate in a coordinated manner while ensuring the accuracy and stability of fiber winding. In addition, when it is necessary to wind a local area separately, the connecting rod can be removed to separate the second gear from the transmission block. This step prevents the protective tube from moving along the direction of the screw, thereby achieving the effect of separate fiber winding in the local area, allowing the operator to control the device for fiber winding more flexibly, improving work efficiency and production quality. If the fiber winding position is offset, the position of the fiber can be adjusted separately by rotating the sleeve in the opposite direction. This function is very conducive to fine-tuning during the fiber winding process, ensuring the uniformity and accuracy of the fiber, and improving the performance and stability of the entire device. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the three-dimensional structure of one side of the gas cylinder plastic inner core fiber winding machine of the present invention;

[0030] Figure 2 It is a schematic diagram of the three-dimensional structure of the other side of the gas cylinder plastic inner core fiber winding machine of the present invention;

[0031] Figure 3 A top view of a fiber winding machine for a plastic inner core of a gas cylinder according to the present invention;

[0032] Figure 4 It is a schematic diagram of the three-dimensional structure of the bearing assembly and the winding assembly of the gas cylinder plastic inner core fiber winding machine of the present invention;

[0033] Figure 5 It is a front view of the bearing assembly and winding assembly of the gas cylinder plastic inner core fiber winding machine of the present invention;

[0034] Figure 6 It is a schematic diagram of the positions and structures of the bearing rod and the lead screw of the filament winding machine for the plastic inner core of the gas cylinder of the present invention;

[0035] Figure 7 It is a schematic diagram of the three-dimensional structure of the winding assembly of the gas cylinder plastic inner core fiber winding machine of the present invention;

[0036] Figure 8 It is a schematic diagram of the disassembly of the docking rod and the accommodating block structure of the gas cylinder plastic inner core fiber winding machine of the present invention.

[0037] In the figure: 1. machine bed; 2. reduction motor; 3. transmission rod; 4. bearing assembly; 5. winding assembly; 41. bearing rod; 42. limit ring; 43. limit block; 44. first gear; 45. docking round block; 51. docking block; 52. screw rod; 53. second gear; 54. transmission block; 55. protective tube; 56. sleeve; 57. connecting piece; 58. guide rod; 59. fitting groove; 510. connecting rod; 511. accommodating block; 512. blocking piece; 513. card block; 514. ratchet; 515. accommodating shell; 516. positioning card slot; 517. docking rod. DETAILED DESCRIPTION

[0038] 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 implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0039] Example 1: Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown: a gas cylinder plastic inner core fiber winding machine and a winding inner core forming method thereof, comprising a machine bed 1, a reduction motor 2 is fixedly installed at one end of the machine bed 1, a bearing component 4 is rotatably installed inside the machine bed 1, and a winding component 5 is rotatably connected to one side of the bearing component 4;

[0040] The winding assembly 5 includes a screw rod 52, a protective tube 55, a sleeve 56 and a housing shell 515. One end of the screw rod 52 is rotatably connected to the second gear 53, one end of the screw rod 52 is fixedly connected to the docking block 51, the protective tube 55 is sleeved on the outer wall of the screw rod 52, the sleeve 56 is rotatably connected to the outer wall of the protective tube 55, the housing shell 515 is clamped on the outer wall of the sleeve 56, and fibers are stored inside the housing shell 515. One side of the second gear 53 is rotatably connected to the transmission block 54, one side of the transmission block 54 is fixedly connected to the guide rod 58, and a connecting piece 57 is fixedly installed on the outer wall of the sleeve 56, and the guide rod 58 passes through the connecting piece 57;

[0041] The bearing assembly 4 includes a bearing rod 41 and a first gear 44. The first gear 44 is fixedly mounted on one end of the bearing rod 41. A docking block 45 is fixedly mounted on the other end of the bearing rod 41. The docking block 51 is rotatably mounted on the outer wall of the docking block 45. The first gear 44 is meshedly connected with the second gear 53.

[0042] In this embodiment, the bearing assembly 4 is used to determine the position of the inner core fiber winding. When winding and forming, the reduction motor 2 drives the bearing assembly 4 and the winding assembly 5 at the same time, wherein the bearing assembly 4 itself rotates to achieve the purpose of winding the fiber onto the surface of the bearing rod 41, and the winding assembly 5 moves around the bearing rod 41 to reduce the tension on the fiber;

[0043] The reduction motor 2 directly drives the bearing rod 41 and the first gear 44, wherein the rotation of the bearing rod 41 can wind the fiber around its own surface, and the rotation of the first gear 44 can push the second gear 53, so that the second gear 53 rotates itself and moves around the first gear 44. When the second gear 53 moves around the first gear 44, it directly drives the entire winding assembly 5 to move around the bearing rod 41. In this process, since the bearing rod 41 itself is also rotating, and the rotation direction is the same as the movement direction of the winding assembly 5, the pulling force on the fiber can be reduced;

[0044] The rotation of the second gear 53 will push the connecting piece 57 through the guide rod 58, and then drive the entire sleeve 56 and the protective tube 55, so that the protective tube 55 moves along the direction of the supporting rod 41. By changing the position of the protective tube 55, the position of the containing shell 515 can be changed synchronously, so as to achieve the purpose of adjusting the winding position, and in the process of the movement of the protective tube 55, the guide rod 58 can also assist in fixing the position of the protective tube 55, thereby improving the stability of the protective tube 55.

[0045] Embodiment 2: According to Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the output end of the reduction motor 2 is fixedly connected to the transmission rod 3, and the transmission rod 3 is rotatably installed inside the machine bed 1. The other end of the transmission rod 3 is fixedly connected to one end of the load-bearing rod 41. A limit block 43 is fixedly installed at the junction of the load-bearing rod 41 and the first gear 44. The limit block 43 is used to determine the initial position of the fiber during winding. A limit ring 42 is fixedly installed on the inner wall of the machine bed 1, and the edge of the second gear 53 is slidably connected to the limit ring 42. An interlocking groove 59 is provided at the junction of the second gear 53 and the limit ring 42.

[0046] In this embodiment, the output end of the reduction motor 2 is connected to the bearing rod 41 through the transmission rod 3. The transmission rod 3 separates the reduction motor 2 and the bearing rod 41, plays a role in protecting the bearing rod 41, and also facilitates installation and disassembly;

[0047] A limit block 43 is set on the surface of the supporting rod 41, and the limit block 43 will determine the starting point of the fiber winding. The limit ring 42 is used to determine the position of the second gear 53 and the subsequent moving route to avoid misalignment between the first gear 44 and the second gear 53. The interlocking groove 59 at the edge of the second gear 53 ensures that the second gear 53 and the limit ring 42 can be completely fitted together, and can also avoid affecting the self-rotation of the second gear 53.

[0048] Embodiment 3: According to Figure 6 , Figure 7 and Figure 8 As shown, a ratchet 514 is fixedly installed on the outer wall of the protective tube 55, and the ratchet 514 is located at the junction of the protective tube 55 and the sleeve 56. The connecting piece 57 is located on one side of the ratchet 514, and a blocking piece 512 is fixedly installed on one side of the connecting piece 57. A clamping block 513 is rotatably installed on one side of the connecting piece 57, and one end of the clamping block 513 is clamped on the outer wall of the ratchet 514, and one side of the clamping block 513 overlaps one side of the blocking piece 512. A accommodating block 511 is fixedly installed on the outer wall of the protective tube 55, and a docking rod 517 is rotatably installed inside the accommodating block 511. One end of the docking rod 517 is slidably connected to the threaded groove of the screw rod 52. One side of the accommodating shell 515 is inserted into the outer wall of the accommodating block 511. A positioning slot 516 is provided at the junction of the accommodating block 511 and the accommodating shell 515, and a connecting rod 510 is inserted between the second gear 53 and the transmission block 54.

[0049] In this embodiment, a docking rod 517 is disposed inside the accommodating block 511, one end of which is located in the thread groove of the screw rod 52. When the protective tube 55 rotates, the docking rod 517 moves along the direction of the thread groove to push the protective tube 55.

[0050] The existence of the ratchet 514 allows the entire winding assembly 5 to have a certain fine-tuning space. During the process of winding the fiber, if the fiber needs to be wound separately in a certain area, the connecting rod 510 used to connect the transmission block 54 and the second gear 53 is pulled out, so that the rotation of the second gear 53 cannot drive the transmission block 54 to rotate. At this time, the guide rod 58 cannot push the protective tube 55, and the protective tube 55 will not move along the direction of the screw rod 52.

[0051] A ratchet 514 is installed on the surface of the protective tube 55. The ratchet 514 contacts the block 513 on the side of the connecting piece 57, and the block 513 is limited by the blocking piece 512. When the guide rod 58 pushes the connecting piece 57, the protective tube 55 can be directly pushed through the block 513. If the fiber winding position is offset, the reduction motor 2 can be stopped first, and then the sleeve 56 can be rotated in the reverse direction to release the wound fiber through reverse transmission and readjust the fiber position.

[0052] The accommodating shell 515 is inserted into the positioning slot 516 on the accommodating block 511 . After use, the accommodating shell 515 can be removed and replaced with a new one.

[0053] The use method and working principle of the device: Step 1: Assemble the bearing assembly 4 and the winding assembly 5: Rotate and install the bearing rod 41 on the machine bed 1, then mesh the second gear 53 with the first gear 44, and limit the second gear 53 in the limiting ring 42;

[0054] Step 2: Sleeve the protective tube 55 onto the outer wall of the screw rod 52, then install the sleeve 56 onto the protective tube 55, and simultaneously install the accommodating shell 515 onto the side of the accommodating block 511, and then connect the transmission block 54 and the second gear 53 together;

[0055] Step 3: Wind one end of the fiber in the accommodating shell 515 onto the limit block 43, then start the reduction motor 2 to drive the bearing rod 41 and the first gear 44 through the transmission rod 3. The rotation of the bearing rod 41 can wrap the limit around its own surface, and the rotation of the first gear 44 can push the second gear 53. The second gear 53 has only one limiting structure, the limit ring 42. Under the push of the first gear 44, the second gear 53 will both rotate and move around the first gear 44, so as to wrap the fiber around the surface of the bearing rod 41. The second gear 53 and the transmission block 54 are connected by the connecting rod 510. When partial winding is required, the connecting rod 510 can be pulled out to separate the second gear 53 and the transmission block 54, or the sleeve 56 can be rotated in the opposite direction to adjust the state of the second gear 53.

[0056] Step 4: The second gear 53 rotates to drive the connecting piece 57 through the guide rod 58, and the block 513 on the side of the connecting piece 57 is used to push the ratchet 514 to achieve the purpose of pushing the entire protective tube 55 to rotate. The docking rod 517 in the accommodating block 511 cooperates with the screw rod 52 to promote the protective tube 55 to move along the direction of the screw rod 52;

[0057] Step 5: The rotation of the bearing rod 41 and the movement of the protection tube 55 can wind the fibers onto the surface of the bearing rod 41, thereby completing the winding molding of the plastic inner core.

[0058] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A gas cylinder plastic inner core fiber winding machine, comprising a machine bed (1), one end of the machine bed (1) being fixedly mounted with a reduction motor (2), characterized in that: A bearing assembly (4) is rotatably mounted inside the machine bed (1), and a winding assembly (5) is rotatably connected to one side of the bearing assembly (4); The winding assembly (5) comprises a screw rod (52), a protective tube (55), a sleeve (56) and a containing shell (515); one end of the screw rod (52) is rotatably connected to a second gear (53); one end of the screw rod (52) is fixedly connected to a docking block (51); the protective tube (55) is sleeved on the outer wall of the screw rod (52); the sleeve (56) is rotatably connected to the outer wall of the protective tube (55); the containing shell (515) is clamped on the outer wall of the sleeve (56); fibers are stored inside the containing shell (515); one side of the second gear (53) is rotatably connected to a transmission block (54); one side of the transmission block (54) is fixedly connected to a guide rod (58); a connecting piece (57) is fixedly mounted on the outer wall of the sleeve (56); the guide rod (58) passes through the connecting piece (57); The bearing assembly (4) comprises a bearing rod (41) and a first gear (44), wherein the first gear (44) is fixedly mounted on one end of the bearing rod (41), a docking round block (45) is fixedly mounted on the other end of the bearing rod (41), the docking block (51) is rotatably mounted on the outer wall of the docking round block (45), and the first gear (44) is meshingly connected with the second gear (53); The output end of the reduction motor (2) is fixedly connected to a transmission rod (3), the transmission rod (3) is rotatably mounted inside the machine bed (1), the other end of the transmission rod (3) is fixedly connected to one end of a bearing rod (41), a limit block (43) is fixedly mounted at the intersection of the bearing rod (41) and the first gear (44), the limit block (43) is used to determine the initial position of the fiber during winding, a limit ring (42) is fixedly mounted on the inner wall of the machine bed (1), the edge of the second gear (53) is slidably connected to the limit ring (42), an engaging groove (59) is provided at the intersection of the second gear (53) and the limit ring (42), a ratchet (514) is fixedly mounted on the outer wall of the protective tube (55), the ratchet (514) is located at the intersection of the protective tube (55) and the sleeve (56), and the connecting piece (57) is located at the ratchet. A blocking piece (512) is fixedly mounted on one side of the connecting piece (57), a clamping block (513) is rotatably mounted on one side of the connecting piece (57), one end of the clamping block (513) is clamped on the outer wall of the ratchet (514), one side of the clamping block (513) is overlapped on one side of the blocking piece (512), a receiving block (511) is fixedly mounted on the outer wall of the protective tube (55), a docking rod (517) is rotatably mounted inside the receiving block (511), one end of the docking rod (517) is slidably connected to the threaded groove of the screw rod (52), one side of the receiving shell (515) is plugged into the outer wall of the receiving block (511), a positioning clamping groove (516) is provided at the intersection of the receiving block (511) and the receiving shell (515), and a connecting rod (510) is plugged between the second gear (53) and the transmission block (54).

2. A method for forming a plastic inner core of a gas cylinder by a fiber winding machine, characterized in that: The gas cylinder plastic core fiber winding machine described in claim 1 above is used, comprising the following steps: S1, assembling the bearing assembly (4) and the winding assembly (5): rotating the bearing rod (41) to be mounted on the machine bed (1), then meshing the second gear (53) with the first gear (44), and restricting the second gear (53) in the limiting ring (42); S2, sleeve the protective tube (55) onto the outer wall of the screw rod (52), then install the sleeve (56) onto the protective tube (55), and simultaneously install the accommodating shell (515) onto the side of the accommodating block (511), and then connect the transmission block (54) and the second gear (53) together; S3, winding one end of the fiber in the containing shell (515) onto the limit block (43), then starting the reduction motor (2) to drive the bearing rod (41) and the first gear (44) via the transmission rod (3), the bearing rod (41) can rotate to limit the winding to itself, and the first gear (44) can rotate to drive the second gear (53); S4, the second gear (53) rotates to drive the connecting piece (57) through the guide rod (58), and the clamping block (513) on the side of the connecting piece (57) is used to push the ratchet (514), so as to achieve the purpose of pushing the entire protective tube (55) to rotate, and the docking rod (517) in the accommodating block (511) and the screw rod (52) are used in cooperation to promote the protective tube (55) to move along the direction of the screw rod (52); S5. The rotation of the bearing rod (41) and the movement of the protective tube (55) can wind the fibers onto the surface of the bearing rod (41), thereby completing the winding molding of the plastic inner core.

3. The winding inner core forming method of the gas cylinder plastic inner core fiber winding machine according to claim 2 is characterized in that: In step S3, the first gear (44) pushes the second gear (53) and further comprises the following steps: S31, the second gear (53) has only one limiting structure, namely, a limiting ring (42); under the push of the first gear (44), the second gear (53) will both rotate and move around the first gear (44), thereby winding the fiber onto the surface of the bearing rod (41); S32, the second gear (53) and the transmission block (54) are connected via a connecting rod (510). When partial winding is required, the connecting rod (510) can be pulled out to separate the second gear (53) and the transmission block (54). When rewinding is required, the sleeve (56) can be rotated in the reverse direction to adjust the state of the second gear (53) and release the already wound fibers.

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