Towpreg uncoiling device and method

Abstract

A towpreg uncoiling device is provided. The towpreg uncoiling device comprises: a creel box for supplying a towpreg wound by a winding machine; a first fixing tube and a second fixing tube which are installed in the creel box and support the tension of the supplied towpreg; a branch tube holder on which a towpreg branch tube that unwinds and supplies the wound towpreg is placed; and a movable tube which is arranged between the first fixing tube and the second fixing tube and the branch tube holder so as to adjust the unwinding position and tension of the towpreg at the initial stage of winding.

Description

Towpreg uncoiling device and method

[0001] The present invention relates to a towpreg uncoiling device and method for uncoiling and supplying a towpreg wound around a plastic pressure vessel liner.

[0002] In general, pressure vessels are containers that store compressed gaseous fuel at high pressure. They are primarily installed in natural gas or hydrogen vehicles. To reduce weight, pressure vessels are manufactured by wrapping towpreg over a plastic liner. Towpreg is a key material in pressure vessels, such as hydrogen tanks, and it plays a role in preventing the tank from deforming or bursting under high pressure.

[0003] Towpreg is an intermediate material made by partially reacting carbon fiber with a thermosetting resin, such as epoxy, and then impregnating it using a separate process. A coiled towpreg is placed on a coil holder within a creel box. As the coiled towpreg is unwound, the towpreg strands are fed and wound onto a plastic liner mounted on a winding machine.

[0004] The krill box is equipped with a towpreg supplying tube holder and tubes that guide the towpreg's progress. When using towpreg in the krill box, the towpreg-wrapped tube is placed on the tube holder, then the towpreg strand is pulled through each tube and delivered to the winding machine.

[0005] During the winding preparation process, the toe preg must be pulled with a consistent force to ensure alignment. Otherwise, inertia will cause the toe preg to rotate further in the direction of release (e.g., counterclockwise) without releasing from the toe preg holder. This means that the loose toe preg will hang from one side of the toe preg holder.

[0006] In this state, if the toe preg is pulled to connect it to the winding machine, the toe preg will break due to the instantaneous force.

[0007] The purpose of the present invention is to provide a tow prreg uncoiling device that prevents the tow prreg installed on the pipe holder in the creel box from breaking when a worker manually pulls the tow prreg toward the winding machine during the preparation process before starting to wind the tow prreg.

[0008] Another object of the present invention is to provide a tow prreg uncoiling method that prevents the tow prreg installed on the pipe holder in the creel box from breaking when the worker manually pulls the tow prreg toward the winding machine during the preparation process before starting to wind the tow prreg.

[0009] A tow prreg uncoiling device according to one embodiment of the present invention includes a creel box for supplying a tow prreg to be wound by a winding machine, a first fixed tube and a second fixed tube installed inside the creel box to support the tension of the supplied tow prreg, a pipe holder on which a tow prreg pipe for unwinding and supplying the wound tow prreg is mounted, and a moving tube disposed between the first fixed tube and the second fixed tube and the pipe holder to adjust the unwinding position and tension of the tow prreg at the beginning of winding.

[0010] The first fixed tube is provided below the toe prreg outlet side of the krill box to support the progress of the toe prreg by rolling friction, and the second fixed tube is provided above the first fixed tube at the toe prreg outlet side of the krill box to support the progress of the toe prreg by rolling friction.

[0011] The above moving tube may include a first tube disposed on one side of the second fixed tube and moving in an up-and-down direction to press the toe preg downward, and a second tube disposed between the first tube and the pipe holder and moving in an opposite direction of the first tube to lift the toe preg upward.

[0012] The above moving tube may include a first tube disposed on one side of the second fixed tube and moving along a first moving guide to apply tension to the toe preg, and a second tube disposed between the first tube and the pipe holder and moving along a second moving guide to move the release start point of the toe preg.

[0013] A towpreg uncoiling device according to one embodiment of the present invention includes a circular gear connected to an axial protrusion by a connecting member, the moving tube being formed integrally with the protrusion and rotating by a driving member, and a moving guide that moves while the moving tube is coupled and rotates.

[0014] The driving unit may include a first linear gear and a second linear gear coupled to both sides of the circular gear, a first piston and a second piston that move in opposite directions by the supplied and discharged hydraulic pressure by the first linear gear and the second linear gear, and a piston body that houses the first piston and the second piston and has a hydraulic line.

[0015] The hydraulic line may include a first line that supplies hydraulic pressure to a first side of the first piston and the second piston, and a second line that discharges hydraulic pressure to a second side of the first piston and the second piston when hydraulic pressure is supplied to the first line to rotate the circular gear counterclockwise.

[0016] The second line supplies hydraulic pressure to the second side of the first piston and the second piston, and when hydraulic pressure is supplied to the second line, the first line discharges hydraulic pressure to the first side of the first piston and the second piston to rotate the circular gear in a clockwise direction.

[0017] A towpreg uncoiling method according to one embodiment of the present invention includes a first step of uncoiling a wound towpreg strand after placing a towpreg branch on a branch holder within a creel box, a second step of pulling the unwound towpreg and passing it through a first fixing tube and a second fixing tube installed within the creel box, a third step of pulling the towpreg and transmitting it to a winding machine, and a fourth step of adjusting the unwinding position and tension of the towpreg at the beginning of winding by movement of a moving tube disposed between the first fixing tube and the second fixing tube and the branch holder.

[0018] The second step may support the downward progression of the toe preg with the first fixing tube provided below the toe preg outlet side of the krill box, and may support the upward progression of the toe preg with the second fixing tube provided above the first fixing tube at the toe preg outlet side of the krill box.

[0019] The above moving tube includes a first tube and a second tube, and in the fourth step, the first tube disposed on one side of the second fixed tube can move in an up-and-down direction to press the toe preg downward, and the second tube disposed between the first tube and the pipe holder can move in an opposite direction of the first tube to lift the toe preg upward.

[0020] The above moving tube includes a first tube and a second tube, and the fourth step is arranged on one side of the second fixed tube so that the first tube can move along the first guide to apply tension to the toe preg, and the second tube can move along the second guide so that the second tube is arranged between the first tube and the pipe holder to move the release start point of the toe preg.

[0021] In the fourth step, the moving tube is connected to an axial protrusion as a connecting member, and a circular gear formed integrally with the protrusion is rotated by a driving member, and the moving tube can be moved by being coupled to a moving guide while rotating.

[0022] In the fourth step, as hydraulic pressure is supplied and discharged through the hydraulic line of the piston body, the first piston and the second piston move in opposite directions, the first linear gear and the second linear gear provided on the first piston and the second piston move in opposite directions, and the circular gear coupled to the first linear gear and the second linear gear rotates, so that the moving tube can move while rotating.

[0023] The above hydraulic line includes a first line and a second line, and the fourth step supplies hydraulic pressure to the first side of the first piston and the second piston through the first line, and when the hydraulic pressure is supplied to the first line, the second line discharges hydraulic pressure to the second side of the first piston and the second piston to rotate the circular gear counterclockwise.

[0024] The fourth step may be such that the second line supplies hydraulic pressure to the second side of the first piston and the second piston, and when hydraulic pressure is supplied to the second line, the first line discharges hydraulic pressure to the first side of the first piston and the second piston to rotate the circular gear in a clockwise direction.

[0025] In this way, one embodiment of the present invention can adjust the release position and tension of the tow preg at the beginning of winding by placing a moving tube between the fixed tube and the pipe holder.

[0026] One embodiment places a movable tube between the fixed tube and the tow preg holder, so that when the operator manually pulls the tow preg toward the winding machine during the preparation process before starting winding the preg, the release position and tension of the tow preg can be adjusted through the movable tube at the beginning of the winding.

[0027] In one embodiment, before starting to wind the tow prreg, during the preparation process, when the worker manually pulls the tow prreg toward the winding machine, the moving tube controls the release position and tension of the tow prreg, thereby preventing the tow prreg from breaking while being wound on the tow prreg pipe in the creel box.

[0028] FIG. 1 is a diagram of a toe prreg uncoiling device according to one embodiment of the present invention, showing the state of the tubes and the toe prreg from the completion of winding of the toe prreg to the start of the next winding.

[0029] Fig. 2 is a hydraulic circuit diagram of a driving unit that moves a tube that supports and guides the toe preg of Fig. 1.

[0030] Fig. 3 is a perspective view of the connection state of the circular gear and tube operated by the driving unit of Fig. 2.

[0031] Figure 4 is a hydraulic circuit diagram from the process of driving the circular gear in Figure 2 to the process of preparing the winding of the toe preg from the start to the completion of preparation.

[0032] FIG. 5 is a diagram of a tow prreg uncoiling device according to one embodiment of the present invention, showing the state of a tube and tow prreg from the state of winding preparation to the state of winding completion in FIG. 4.

[0033] Figure 6 is a hydraulic circuit diagram from the start to the completion of the process of returning to the winding preparation process after completing the winding of the toe preg in Figure 5.

[0034] Figure 7 is a flowchart of a towpreg uncoiling method according to one embodiment of the present invention.

[0035] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings so that those skilled in the art can easily implement the present invention. However, the present invention may be implemented in various different forms and is not limited to the embodiments described herein. In the drawings, parts irrelevant to the description have been omitted to clearly explain the present invention, and the same reference numerals have been used throughout the specification to refer to identical or similar components.

[0036] Terms that include ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by these terms. These terms are used solely to distinguish one component from another.

[0037] When a component is referred to as being "connected" or "connected" to another component, it should be understood that it may be directly connected or connected to that other component, but that there may be other components intervening. Conversely, when a component is referred to as being "directly connected" or "connected" to another component, it should be understood that there are no other components intervening.

[0038] Throughout the specification, terms such as "comprises" or "has" should be understood to indicate the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but not to exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof. Therefore, when a part is said to "comprise" a certain component, this does not mean that other components are excluded, but rather that other components may be included, unless specifically stated otherwise.

[0039] FIG. 1 is a diagram illustrating a state of tubes and a tow prreg from the completion of winding of the tow prreg to the start of the next winding, according to an embodiment of the present invention. Referring to FIG. 1, the tow prreg uncoiling device of one embodiment includes a creel box (20) for supplying a tow prreg to be wound by a winding machine (10), a first fixed tube (31), a second fixed tube (32), a pipe holder (40), and a moving tube (50).

[0040] The winding machine (10) winds the towpreg (60) supplied from the creel box (20) onto a plastic liner (not shown). The creel box (20) has a first fixed tube (31), a second fixed tube (32), a pipe holder (40), and a moving tube (50) built in to continuously supply the towpreg (60) to be wound onto the plastic liner.

[0041] The first fixed tube (31) and the second fixed tube (32) are installed inside the krill box (20) and support the tension of the supplied tow preg (60). For example, the first fixed tube (31) is provided downward from the tow preg (60) exit side of the krill box (20) to ultimately support and guide the progress of the tow preg (60) through rolling friction.

[0042] The second fixed tube (32) is provided above the first fixed tube (31) at the exit side of the toe preg (60) of the creel box (20) to support and guide the progress of the toe preg (60) to the first fixed tube (31) by cloud friction. The first and second fixed tubes (31, 32) stably support and guide the tension and progress of the toe preg (60) when the toe preg (60) is wound around the plastic liner.

[0043] The tow preg pipe (40) is installed on the opposite side of the outlet inside the creel box (20). The tow preg pipe (41) that unwinds and supplies the wound tow preg (60) is installed on the tow preg pipe (40).

[0044] The moving tube (50) is arranged between the first fixed tube (31), the second fixed tube (32) and the pipe holder (40) and is configured to adjust the release position and tension of the tow preg (60) at the beginning of winding. That is, during the process in which the tow preg (60) is continuously supplied and stably wound in the winding machine (10), the moving tube (50) is separated from the tow preg (60) and does not act as a load on the progress of the tow preg (60).

[0045] For example, the moving tube (50) includes a first tube (51) and a second tube (52). The first tube (51) is arranged on one side of the second fixed tube (32) and is configured to move in an up-and-down direction while pressing the toe preg (60) downward. The second tube (52) is arranged between the first tube (51) and the pipe holder (40) and is configured to move in an opposite direction to the movement of the first tube (51) while lifting the toe preg (60) upward.

[0046] Fig. 2 is a hydraulic circuit diagram of a driving unit that moves a tube that supports and guides the toe preg of Fig. 1, and Fig. 3 is a perspective view of the connection state of a circular gear and a tube operated by the driving unit of Fig. 2.

[0047] Referring to FIGS. 2 and 3, the towpreg uncoiling device of one embodiment further includes a driving unit (90), a circular gear (80) driven by the driving unit (90), and a moving guide (70) to move the first and second tubes (51, 52).

[0048] The circular gear (80) has an axial protrusion (801), a connecting member (82) is integrally connected to the protrusion (801), and a moving tube (50) is connected to the connecting member (82). The circular gear (80) rotates clockwise and counterclockwise by a driving member (90). Therefore, as the circular gear (80) rotates, the axial protrusion (801), the connecting member (82), and the moving tube (50) rotate integrally clockwise and counterclockwise.

[0049] The circular gear (80) and the driving unit (90) may be provided with the same structure in each of the moving tubes (50), i.e., the first tube (51) and the second tube (52). For convenience, FIGS. 2 and 3 disclose one circular gear (80) and one driving unit (90).

[0050] Referring again to FIGS. 1 and 3, the circular gear (80) is initiated as a first circular gear (811) and a second circular gear (812), respectively, and the connecting member (82) is initiated as a first connecting member (821) and a second connecting member (822), respectively.

[0051] The first tube (51) is connected to the first connecting member (821) of the first circular gear (811). The first tube (51) is arranged on one side of the second fixed tube (32) and is configured to move along the first moving guide (71) to apply tension to the toe preg (60). Since the first moving guide (71) is formed in an arc shape, the first tube (51) moves up and down along the first moving guide (71) while drawing an arc-shaped trajectory according to the driving of the first circular gear (811) and the first connecting member (821).

[0052] The second tube (52) is connected to the second connecting member (822) of the second circular gear (812). The second tube (52) is arranged between the first tube (51) and the pipe holder (40) and is configured to move along the second moving guide (72) to move the release starting point of the toe ridge (60). Since the second moving guide (72) is formed in an arc shape, the second tube (52) moves up and down along the second moving guide (72) while drawing an arc-shaped trajectory according to the driving of the second circular gear (812) and the second connecting member (822).

[0053] Referring again to FIGS. 2 and 3, the driving unit (90) that rotates the circular gear (80) clockwise and counterclockwise includes a first linear gear (911), a second linear gear (912), a first piston (921), a second piston (922), and a piston body (93).

[0054] The first linear gear (911) and the second linear gear (912) are connected to each other as gears on both sides of the circular gear (80). As the circular gear (80) rotates, the first linear gear (911) and the second linear gear (912) rotate in opposite directions.

[0055] The first piston (921) and the second piston (922) are provided with a first linear gear (911) and a second linear gear (912), respectively, and move in opposite directions by the supplied and discharged hydraulic pressure. The piston body (93) has the first piston (921) and the second piston (922) built in to enable the first piston (921) and the second piston (922) to move in opposite directions, and is provided with a hydraulic line (94).

[0056] Figure 4 is a hydraulic circuit diagram from the process of driving the circular gear in Figure 2 to the process of preparing the winding of the toe preg from the start to the completion of preparation.

[0057] Referring to FIGS. 2 and 4, the hydraulic line (94) includes a first line (941) and a second line (942). The first line (941) supplies hydraulic pressure to the first sides (P11, P21) of the first piston (921) and the second piston (922). When hydraulic pressure is supplied to the first line (941), the second line (942) discharges the hydraulic pressure to the second sides (P12, P22) of the first piston (921) and the second piston (922). When hydraulic pressure is supplied to the first line (941) and discharged to the second line (942), the circular gear (80) rotates counterclockwise.

[0058] FIG. 5 is a diagram of a toe prreg uncoiling device according to one embodiment of the present invention, showing the state of a tube and a toe prreg from the state of winding preparation completion in FIG. 4 to the state of winding completion, and FIG. 6 is a hydraulic circuit diagram showing the process of returning to the winding preparation process from the start to the end after winding of the toe prreg in FIG. 5 is completed.

[0059] Referring to FIGS. 2 and 6, the second line (942) supplies hydraulic pressure to the second sides (P12, P22) of the first piston (921) and the second piston (922). When hydraulic pressure is supplied to the second line (942), the first line (941) discharges hydraulic pressure to the first sides (P11, P21) of the first piston (921) and the second piston (922). When hydraulic pressure is supplied to the second line (942) and discharged to the first line (941), the circular gear (80) rotates clockwise.

[0060] Figure 7 is a flowchart of a towpreg uncoiling method according to one embodiment of the present invention. Referring to Figure 7, the towpreg uncoiling method of one embodiment includes a first step (ST1), a second step (ST2), a third step (ST3), and a fourth step (ST4).

[0061] In the first step (ST1), the toe preg pipe (41) is placed on the pipe holder (40) in the krill box (20), and then the wound toe preg (60) strand is unwound.

[0062] The second stage (ST2) pulls the released toe preg (60) and passes it through the first fixing tube (31) and the second fixing tube (32) installed in the creel box (20). The second stage (ST2) supports the downward movement of the toe preg (60) with the first fixing tube (31) provided below the toe preg (60) exit side of the creel box (20), and supports the upward movement of the toe preg (60) with the second fixing tube (32) provided above the first fixing tube (31) at the toe preg (60) exit side of the creel box (20).

[0063] Step 3 (ST3) pulls the toe preg (60) and transfers it to the winding machine (10).

[0064] Step 4 (ST4) adjusts the release position and tension of the toe preg (60) at the beginning of winding by moving the moving tube (50) placed between the first fixed tube (31), the second fixed tube (32) and the pipe holder (40).

[0065] Referring to FIG. 5, in the fourth step (ST4), the first tube (51) positioned on one side of the second fixed tube (32) moves up and down to press the toe preg (60) downward, and the second tube (52) positioned between the first tube (51) and the pipe holder (40) moves in the opposite direction of the first tube (51) to lift the toe preg (60) upward.

[0066] In the fourth step (ST4), the first tube (51) is moved along the first moving guide (71) to apply tension to the toe preg (60) by being placed on one side of the second fixed tube (52), and the second tube (52) is moved along the second moving guide (72) to move the starting point of release of the toe preg (60) by being placed between the first tube (51) and the pipe holder (40).

[0067] In the fourth step (ST4), the moving tube (50) is connected to the axial protrusion (801) by a connecting member (82), and a circular gear (80) formed integrally with the protrusion (801) is rotated by a driving member (90), and the moving tube (50) is coupled to the moving guide (70) and moves while rotating.

[0068] In the fourth stage (ST4), as hydraulic pressure is supplied and discharged through the hydraulic line (94) of the piston body (93), the first piston (921) and the second piston (922) move in opposite directions, the first linear gear (911) and the second linear gear (912) provided on the first piston (921) and the second piston (922) move in opposite directions, and the circular gear (80) coupled to the first linear gear (911) and the second linear gear (912) rotates, causing the moving tube (50) to rotate and move.

[0069] The fourth stage (ST4) supplies hydraulic pressure to the first side (P11, P21) of the first piston (921) and the second piston (922) through the first line (941), and when the hydraulic pressure is supplied through the first line (941), the second line (942) discharges the hydraulic pressure to the second side (P12, P22) of the first piston (921) and the second piston (922) to rotate the circular gear (80) counterclockwise (see FIG. 4).

[0070] In addition, the fourth stage (ST4) supplies hydraulic pressure to the second side (P12, P22) of the first piston (921) and the second piston (922) through the second line (942), and when hydraulic pressure is supplied to the second line (942), the first line (941) discharges hydraulic pressure to the first side (P11, P21) of the first piston (921) and the second piston (922) to rotate the circular gear (80) clockwise (see FIG. 6).

[0071] Although the preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and various modifications can be made within the scope of the patent claims, the detailed description of the invention, and the attached drawings, and it is obvious that this also falls within the scope of the present invention.

[0072] - Explanation of symbols -

[0073] 10: Winding machine 20: Creel box

[0074] 31: First fixed tube 32: Second fixed tube

[0075] 40: Branch holder 41: Toe-preg branch

[0076] 50: Moving tube 51: First tube

[0077] 52: 2nd tube 60: Toe ridge

[0078] 70: Movement Guide 71: First Movement Guide

[0079] 72: Second movement guide 80: Circular gear

[0080] 82: connecting member 90: driving member

[0081] 93: Piston body 94: Hydraulic line

[0082] 801: Protrusion 811: First circular gear

[0083] 812: Second circular gear 821: First connecting member

[0084] 822: Second connecting member 911: First linear gear

[0085] 912: Second linear gear 921: First piston

[0086] 922: 2nd piston 941: 1st line

[0087] 942: 2nd line P11, P21: 1st side

[0088] P12, P22: Second side

Claims

1. A creel box that supplies tow preg to be wound by a winding machine; A first fixed tube and a second fixed tube that are installed inside the above-mentioned creel box and support the tension of the supplied toupreme; A pipe holder on which a toe preg pipe for releasing and supplying the wound toe preg is placed; and A movable tube arranged between the first fixed tube and the second fixed tube and the branch holder to adjust the release position and tension of the tow preg at the beginning of winding. A towpreg uncoiling device including:

2. In paragraph 1, The above first fixed tube It is provided at the bottom of the toe preg outlet side of the above krill box to support the progress of the toe preg by cloud friction, The above second fixed tube Provided above the first fixed tube on the toe preg outlet side of the above krill box to support the progress of the toe preg by cloud friction, Towpreg uncoiling device.

3. In paragraphs 1 and 2, The above moving tube A first tube positioned on one side of the second fixed tube and moving up and down to press the toe preg downward, and A second tube positioned between the first tube and the pipe holder, and moving in the opposite direction of the first tube to lift the toe preg upwards. A towpreg uncoiling device including:

4. In paragraphs 1 and 2, The above moving tube A first tube arranged on one side of the second fixed tube and moving along the first guide to apply tension to the toe preg, and A second tube positioned between the first tube and the pipe holder and moving along the second guide to move the starting point of the release of the toe preg A towpreg uncoiling device including:

5. In paragraphs 1 to 4, A circular gear in which the above moving tube is connected to an axial protrusion as a connecting member and is formed integrally with the protrusion and rotated by a driving member, and A moving guide that moves while rotating by combining the above moving tubes A towpreg uncoiling device further comprising:

6. In paragraph 5, The above driving part A first linear gear and a second linear gear coupled to both sides of the above circular gear, A first piston and a second piston that move in opposite directions by the supplied and discharged hydraulic pressure provided with the first linear gear and the second linear gear, and A piston body having the first piston and the second piston built in and having a hydraulic line A towpreg uncoiling device including:

7. In paragraph 6, The above hydraulic line A first line supplying hydraulic pressure to the first side of the first piston and the second piston, and When hydraulic pressure is supplied to the first line above, A second line that discharges hydraulic pressure to the second side of the first piston and the second piston to rotate the circular gear counterclockwise. A towpreg uncoiling device including:

8. In paragraph 7, The second line supplies hydraulic pressure to the second side of the first piston and the second piston, When hydraulic pressure is supplied to the second line above, The first line above discharges hydraulic pressure to the first side of the first piston and the second piston to rotate the circular gear clockwise. Towpreg uncoiling device.

9. The first step is to unwind the wound toe preg strand after placing the toe preg strand on the toe preg holder inside the krill box; A second step of pulling the released toe preg and passing it through the first and second fixing tubes installed in the creel box; A third step of pulling the above toe preg and transferring it to the winding machine side; and A fourth step of adjusting the release position and tension of the tow preg at the beginning of winding by movement of the moving tube arranged between the first fixed tube and the second fixed tube and the branch holder. A towpreg uncoiling method including:

10. In paragraph 9, The second step above is The downward progression of the toe preg is supported by the first fixed tube provided at the bottom on the toe preg outlet side of the above krill box, Supporting the upward progression of the toe preg with the second fixed tube provided above the first fixed tube on the toe preg outlet side of the above krill box, How to uncoil a tow prreg.

11. In paragraphs 9 and 10, The above moving tube includes a first tube and a second tube, The above 4th step is The first tube positioned on one side of the second fixed tube moves up and down to press the toe preg downward, The second tube, which is positioned between the first tube and the pipe holder, moves in the opposite direction of the first tube to lift the toe preg upward. How to uncoil a tow prreg.

12. In paragraphs 9 and 10, The above moving tube includes a first tube and a second tube, The above 4th step is The first tube is arranged on one side of the second fixed tube and moves along the first moving guide to apply tension to the toe preg, The second tube is positioned between the first tube and the pipe holder and moves along the second moving guide to move the release starting point of the toe preg. How to uncoil a tow prreg.

13. In paragraphs 9 to 12, The above 4th step is The above moving tube is connected to an axial protrusion as a connecting member, and a circular gear formed integrally with the protrusion rotates by a driving unit, The above moving tube moves while rotating and is coupled to the moving guide. How to uncoil a tow prreg.

14. In paragraph 13, The above 4th step is As hydraulic pressure is supplied and discharged through the hydraulic lines of the piston body, the first and second pistons move in opposite directions, The first linear gear and the second linear gear provided in the first piston and the second piston move in opposite directions, The circular gear coupled to the first linear gear and the second linear gear rotates, and the moving tube moves while rotating. How to uncoil a tow prreg.

15. In paragraph 14, The above hydraulic line includes a first line and a second line, The above 4th step is Supplying hydraulic pressure to the first side of the first piston and the second piston through the first line, When supplying hydraulic pressure to the above first line, The second line discharges hydraulic pressure to the second side of the first piston and the second piston to rotate the circular gear counterclockwise. How to uncoil a tow prreg.

16. In paragraph 15, The above 4th step is The second line supplies hydraulic pressure to the second side of the first piston and the second piston, When hydraulic pressure is supplied to the second line above, The first line above discharges hydraulic pressure to the first side of the first piston and the second piston to rotate the circular gear clockwise. How to uncoil a tow prreg.

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