Dacron screen cloth dyeing and finishing process without water dyeing

Abstract

The invention discloses a polyester mesh dyeing and finishing process without water dyeing, and particularly relates to the technical field of thermal dye sublimation transfer printing, the polyester mesh dyeing and finishing process comprises a transfer printing device, the transfer printing device comprises a base, and the top end of the base is provided with a heating assembly used for heating and a fixing assembly used for fixing polyester mesh; the heating assembly comprises a heating box fixedly arranged at the top end of the base, a heat conduction metal plate is fixedly arranged at the top end of the heating box, a heating plate is arranged in the heat conduction metal plate, a sliding plate is arranged in the heating box, and the heating plate is fixedly arranged at the top end of the sliding plate. The bottom end of the heat-conducting metal plate is coated with a heat-conducting silicone grease layer with heat-conducting and lubricating functions. The driving assembly drives the heating plate to move back and forth in the heating box, the heating position of the heating plate at the bottom end of the heat conduction metal plate is continuously adjusted, then all positions of cloth and paper are evenly heated, and uneven color distribution after pattern transfer printing is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of thermal sublimation transfer printing, and in particular to a waterless dyeing polyester mesh fabric dyeing and finishing process. Background Art

[0002] The thermal sublimation transfer technology uses special ink to print the corresponding pattern on paper, then covers the paper with the pattern on the fabric, and pressurizes and heats the fabric and paper. The heat causes the ink on the paper to sublimate and adhere to the fabric, thereby transferring the pattern to the fabric. The most common thermal sublimation transfer technology in reality is to print numbers on jerseys in sports stores.

[0003] In the production field, this technology can be used to process fabrics with special patterns, such as the thermal sublimation transfer equipment with publication number CN212860786U in the prior art. Among them, polyester mesh fabrics are often processed into various patterns using thermal sublimation transfer technology, and then used to make sofa covers, curtains, sportswear, etc.

[0004] During the process of thermal sublimation transfer, the heating component and the heated fabric and transfer paper are relatively stationary. If the heating component heats unevenly, the fabric and transfer paper will be heated unevenly, resulting in uneven color distribution after the pattern is transferred. Summary of the invention

[0005] The purpose of the present invention is to provide a waterless polyester mesh dyeing and finishing process, which continuously adjusts the heating position at the bottom of the heat-conducting metal plate, thereby making each position of the cloth and paper evenly heated, thereby avoiding uneven color distribution after pattern transfer.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solution: a waterless dyeing polyester mesh fabric dyeing and finishing process, the specific steps are as follows:

[0007] S1: Printing a pattern on paper using thermal sublimation transfer ink to make a pattern to be transferred;

[0008] S2: Roll up the polyester mesh to be dyed and fix it on the transfer device, and perform sublimation transfer section by section;

[0009] S3: Pull the polyester mesh cloth and clean it first, and use the transfer device to remove dust and impurities attached to the cloth to prevent the dust and impurities from interfering with the transfer;

[0010] S4: The impurity-free polyester mesh and the paper with printed patterns are laid flat on the heating and pressurizing position of the transfer device, with the fabric on top and the paper on the bottom. The pattern needs to be aligned with the corresponding position on the fabric without tilting or offset;

[0011] S5: Finally, the paper and the polyester fabric are pressed together by using a transfer device, and both are heated at the same time, so that the pattern on the paper is transferred to the polyester fabric, and the dyeing and finishing process of the polyester fabric is completed.

[0012] The transfer device in S2-S5 comprises a base, and a heating component for heating and a fixing component for fixing the polyester mesh cloth are provided on the top of the base;

[0013] The heating assembly includes a heating box fixed on the top of the base, a heat-conducting metal plate fixed on the top of the heating box, a heating plate inside the heat-conducting metal plate, the heat-conducting metal plate is heated by the heating plate, and the heat-conducting metal plate is used to conduct heat.

[0014] Furthermore, a sliding plate is provided inside the heating box, the heating plate is fixedly arranged at the top of the sliding plate, a layer of thermal conductive silicone grease having heat conductive and lubricating effects is applied to the bottom of the heat conductive metal plate, the top of the heating plate contacts the thermal conductive silicone grease layer, the friction during the movement of the heating plate is reduced, and the heat conduction is not affected;

[0015] A strip-shaped protrusion is fixedly provided on the inner wall of the heating box, and the strip-shaped protrusion is embedded in the groove on the sliding plate. A pressing plate is provided on the top of the heat-conducting metal plate, and the pressing plate is movably connected to the heating box through a hinge.

[0016] Further, a driving assembly is provided at the rear side of the heating box, a slide groove is provided at the rear side of the heating box, the driving assembly includes a reciprocating screw rod, both ends of the reciprocating screw rod are provided with end plates through bearings, and the end plates are fixedly arranged at the rear side of the heating box;

[0017] A sliding seat is provided at the outer end of the reciprocating screw rod, and the reciprocating screw rod and the sliding seat are movably connected via a ball nut pair. A connecting piece is fixedly provided at the outer end of the sliding seat, and the front end of the connecting piece extends to the interior of the heating box through a sliding groove and is fixedly connected to the sliding plate, and a motor for driving the reciprocating screw rod to rotate is fixedly provided on one of the end plates.

[0018] Further, two pressure components are provided on the front side of the pressure plate, and the pressure components include a fixed plate fixed on the front side of the pressure plate, a tension spring is fixed on the bottom end of the fixed plate, and a sliding ring is fixed on the bottom end of the tension spring;

[0019] The pressure component also includes an adjusting screw rod arranged at the top of the base through a rotating shaft, and a hexagonal screw head is fixedly arranged at the outer end of the adjusting screw rod. When the polyester mesh cloth is pressurized, the sliding ring is arranged on the corresponding outer end of the adjusting screw rod through a threaded sleeve.

[0020] Furthermore, a cleaning component is provided on one side of the heating component, and the cleaning component includes an airflow box fixedly arranged on the top of the base, and an exhaust groove is provided on the top of the airflow box, and the polyester mesh covers the top of the exhaust groove during cleaning;

[0021] An air guide tube is fixedly provided on the front side of the air flow box, an air pump is fixedly provided on the air guide tube, air is blown into the air flow box through the air guide tube and the air pump, a fastening frame is provided on the top of the air flow box, and a plurality of balls are fixedly provided on the bottom end of the fastening frame.

[0022] Furthermore, the fastening frame is provided with brackets on both the front and rear sides, the brackets are fixedly arranged at the top of the airflow box, the brackets are provided with a pressure rod penetrating the brackets, and a fixing sheet is fixedly arranged at the top of the pressure rod;

[0023] A pressure spring is arranged between the fixing plate and the top of the bracket, and the elastic force of the pressure spring is used to press and fix the polyester cloth on the top of the airflow box. A fixing ring is sleeved on the bottom end of the pressure rod, and the fixing ring is fixed on the top of the fastening frame.

[0024] Furthermore, the fixing assembly is arranged on a side of the cleaning assembly away from the heating assembly, and the fixing assembly comprises a vertical plate fixedly arranged on the top of the base, a sleeve is fixedly arranged on the rear side of the vertical plate, and an air pipe with a valve is fixedly arranged on the rear side of the sleeve;

[0025] A reel is provided on the vertical plate through a sealed bearing and passes through the vertical plate. The rear end of the reel is communicated with the interior of the sleeve. An expansion airbag is fixedly provided at the outer end of the reel. A plurality of air holes located inside the expansion airbag are opened at the outer end of the reel.

[0026] In the above technical solution, the technical effects and advantages provided by the present invention are:

[0027] 1. The driving assembly drives the heating plate to reciprocate inside the heating box, and continuously adjusts its heating position at the bottom of the heat-conducting metal plate, so that each position of the cloth and paper is heated evenly, avoiding uneven color distribution after pattern transfer;

[0028] 2. By covering the exhaust groove with the polyester mesh cloth before processing and blowing high-pressure air into the airflow box, the dust and impurities hidden in the gaps of the polyester mesh cloth can be blown out with high-pressure air, making the cleaning effect more thorough. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0030] Figure 1 It is a rear view structural diagram of the present invention;

[0031] Figure 2 It is the main structural diagram of the present invention;

[0032] Figure 3 This is a structural diagram of the pressing plate of the present invention in an open state;

[0033] Figure 4 For the present invention Figure 2 Enlarged view of part A in the middle;

[0034] Figure 5 It is a structural diagram of the driving assembly and the heating plate of the present invention;

[0035] Figure 6 A side cross-sectional view of a heating assembly of the present invention;

[0036] Figure 7 A side cross-sectional view of a cleaning assembly of the present invention;

[0037] Figure 8 It is a side cross-sectional view of the fixing assembly of the present invention.

[0038] Description of reference numerals:

[0039] 1. Base; 2. Heating assembly; 201. Heat-conducting metal plate; 202. Heating box; 203. Sliding plate; 204. Strip protrusion; 205. Heating plate; 206. Thermal grease layer; 3. Air duct; 4. Air pump; 5. Cleaning assembly; 501. Air flow box; 502. Exhaust groove; 503. Bracket; 504. Fastening frame; 505. Ball bearing; 6. Fixing assembly; 601. Vertical plate; 602. Sleeve; 603. Winding shaft; 604. Air vent; 605. Inflatable airbag; 7. Pressing plate; 8. Driving assembly; 801. Motor; 802. Reciprocating screw; 803. Sliding seat; 804. Connecting plate; 805. End plate; 9. Pressing assembly; 901. Fixing plate; 902. Adjusting screw; 903. Hexagonal screw head; 904. Sliding ring; 905. Tension spring. DETAILED DESCRIPTION

[0040] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0041] The present invention provides a waterless dyeing polyester mesh fabric dyeing and finishing process, and the specific steps are as follows:

[0042] S1: Printing a pattern on paper using thermal sublimation transfer ink to make a pattern to be transferred;

[0043] S2: Roll up the polyester mesh to be dyed and fix it on the transfer device, and perform sublimation transfer section by section;

[0044] S3: Pull the polyester mesh cloth and clean it first, and use the transfer device to remove dust and impurities attached to the cloth to prevent the dust and impurities from interfering with the transfer;

[0045] S4: The impurity-free polyester mesh and the paper with printed patterns are laid flat on the heating and pressurizing position of the transfer device, with the fabric on top and the paper on the bottom. The pattern needs to be aligned with the corresponding position on the fabric without tilting or offset;

[0046] S5: Finally, the paper and the polyester fabric are pressed together by using a transfer device, and both are heated at the same time, so that the pattern on the paper is transferred to the polyester fabric, and the dyeing and finishing process of the polyester fabric is completed.

[0047] like Figure 1-8 As shown, the transfer device in S2-S5 includes a base 1, and a heating component 2 for heating and a fixing component 6 for fixing the polyester mesh are provided on the top of the base 1;

[0048] The heating assembly 2 includes a heating box 202 fixed on the top of the base 1, a heat-conducting metal plate 201 is fixed on the top of the heating box 202, a heating plate 205 is arranged inside the heat-conducting metal plate 201, the heat-conducting metal plate 201 is heated by the heating plate 205, and the heat-conducting metal plate 201 is used to conduct heat.

[0049] The heating box 202 is provided with a sliding plate 203 inside, and the heating plate 205 is fixedly arranged on the top of the sliding plate 203. The bottom of the heat-conducting metal plate 201 is coated with a layer of thermal conductive silicone grease 206 with heat-conducting and lubricating effects. The top of the heating plate 205 is in contact with the thermal conductive silicone grease layer 206, which reduces the friction force during the movement of the heating plate 205 and does not affect the conduction of heat.

[0050] A strip protrusion 204 is fixedly provided on the inner wall of the heating box 202, and the strip protrusion 204 is embedded in the groove on the sliding plate 203. A pressing plate 7 is provided on the top of the heat-conducting metal plate 201, and the pressing plate 7 is movably connected to the heating box 202 through a hinge.

[0051] During the thermal sublimation transfer process, the polyester mesh cloth and the paper with the pattern printed on it are laid flat on the top of the heat-conducting metal plate 201, with the paper at the bottom and the cloth at the top, and the pressing plate 7 is covered on the top of the heat-conducting metal plate 201 to clamp the polyester mesh cloth and the paper. At the same time, the heating plate 205 is energized inside the heating box 202 to heat the heat-conducting metal plate 201, and the heat-conducting metal plate 201 then conducts the heat to the polyester mesh cloth and the paper. The ink of the pattern on the paper sublimates and adheres to the polyester mesh cloth, thereby realizing the transfer of the pattern. During the heating process, the heating plate 205 slides back and forth at the bottom of the heat-conducting metal plate 201, and continuously adjusts its heating position at the bottom of the heat-conducting metal plate 201, so that each position of the cloth and the paper is heated evenly, thereby avoiding uneven color distribution after the pattern transfer.

[0052] In order to drive the heating plate 205 to move inside the heating box 202, as shown in FIG. Figure 1 , 5 As shown in , 6, a driving assembly 8 is provided at the rear side of the heating box 202, a slide groove is provided at the rear side of the heating box 202, and the driving assembly 8 includes a reciprocating screw rod 802, both ends of the reciprocating screw rod 802 are provided with end plates 805 through bearings, and the end plates 805 are fixedly arranged at the rear side of the heating box 202;

[0053] A sliding seat 803 is sleeved on the outer end of the reciprocating screw rod 802, and the reciprocating screw rod 802 and the sliding seat 803 are movably connected via a ball nut pair. A connecting piece 804 is fixedly provided on the outer end of the sliding seat 803. The front end of the connecting piece 804 extends to the interior of the heating box 202 through a sliding groove and is fixedly connected to the sliding plate 203. A motor 801 for driving the reciprocating screw rod 802 to rotate is fixedly provided on one of the end plates 805.

[0054] During the heating process, the motor 801 is turned on, and the reciprocating screw 802 is driven to rotate by the motor 801, and the slide 803 is driven to reciprocate back and forth at the outer end of the reciprocating screw 802. The slide 803 then drives the sliding plate 203 to reciprocate inside the heat-conducting metal plate 201 through the connecting piece 804, thereby driving the heating plate 205 to move.

[0055] When the pressing plate 7 is covered on the top of the heat-conducting metal plate 201, it is necessary to fix it and pressurize the polyester mesh and paper, such as Figure 2-4 As shown, two pressure components 9 are provided on the front side of the pressure plate 7, and the pressure component 9 includes a fixing plate 901 fixed on the front side of the pressure plate 7, a tension spring 905 is fixed on the bottom end of the fixing plate 901, and a sliding ring 904 is fixed on the bottom end of the tension spring 905;

[0056] The pressure component 9 also includes an adjusting screw 902 arranged at the top of the base 1 through a rotating shaft, and a hexagonal screw head 903 is fixedly provided at the outer end of the adjusting screw 902. When the polyester mesh cloth is pressurized, the sliding ring 904 is threadedly sleeved on the corresponding outer end of the adjusting screw 902.

[0057] After the pressure plate 7 is covered on the top of the heat-conducting metal plate 201, the sliding ring 904 is located at the adjusting screw 902. At this time, the sliding ring 904 is put on the outer end of the adjusting screw 902, and the hexagonal screw head 903 is turned to make the adjusting screw 902 rotate. Under the action of the thread, the sliding ring 904 moves downward and stretches the tension spring 905. The elastic force of the tension spring 905 is used to pull the fixed plate 901 and the pressure plate 7 downward, so that the pressure plate 7 presses the paper and the polyester mesh.

[0058] Before hot pressing, the polyester mesh needs to be cleaned, such as Figure 1 , 2As shown in , 7, a cleaning component 5 is provided on one side of the heating component 2, and the cleaning component 5 includes an airflow box 501 fixedly arranged on the top of the base 1, and an exhaust groove 502 is opened on the top of the airflow box 501, and the polyester mesh covers the top of the exhaust groove 502 during cleaning;

[0059] An air duct 3 is fixedly provided on the front side of the air flow box 501, and an air pump 4 is fixedly provided on the air duct 3. Air is blown into the air flow box 501 through the air duct 3 and the air pump 4. A fastening frame 504 is provided on the top of the air flow box 501, and a plurality of balls 505 are fixedly provided on the bottom end of the fastening frame 504.

[0060] The fastening frame 504 is provided with brackets 503 at both the front and rear sides. The brackets 503 are fixedly arranged at the top of the airflow box 501. The brackets 503 are provided with a pressure rod penetrating the brackets 503. A fixing plate is fixedly arranged at the top of the pressure rod.

[0061] A pressure spring is provided between the fixing plate and the top of the bracket 503 , and the elastic force of the pressure spring is used to press the polyester cloth to the top of the airflow box 501 . A fixing ring is provided at the bottom of the pressure rod, and the fixing ring is fixed to the top of the fastening frame 504 .

[0062] Before reaching the heat-conducting metal plate 201, the polyester mesh first passes through the cleaning component 5, the polyester mesh passes through the fastening frame 504 and the airflow box 501, and the ball 505 contacts the top of the polyester mesh, the elastic force of the pressure spring drives the pressure rod downward, and the pressure rod applies pressure downward to the fastening frame 504, thereby pressing the polyester mesh to the top of the airflow box 501, and the compressed polyester mesh closes the exhaust groove 502, and air is blown into the airflow box 501 through the air guide pipe 3 and the air pump 4 to increase the air pressure inside the airflow box 501. The air entering the airflow box 501 is blown out through the exhaust groove 502. When the polyester mesh passes through the exhaust groove 502, the high-pressure air blown out from the exhaust groove 502 will flow outward through the fiber gaps of the polyester mesh, and the dust and impurities hidden in the gaps of the polyester mesh will also be cleaned out, and the cleaning effect will be more thorough.

[0063] Before processing, the polyester mesh is uniformly rolled up and fixed on the fixing component 6, such as Figure 1 , 8 As shown, the fixing assembly 6 is arranged on the side of the cleaning assembly 5 away from the heating assembly 2, and the fixing assembly 6 includes a vertical plate 601 fixedly arranged on the top of the base 1, a sleeve 602 is fixedly arranged on the rear side of the vertical plate 601, and an air pipe with a valve is fixedly arranged on the rear side of the sleeve 602;

[0064] A winding shaft 603 penetrating the vertical plate 601 is provided on the vertical plate 601 through a sealed bearing, the rear end of the winding shaft 603 is communicated with the interior of the sleeve 602, an expansion airbag 605 is fixedly provided on the outer end of the winding shaft 603, and a plurality of air holes 604 located inside the expansion airbag 605 are opened on the outer end of the winding shaft 603.

[0065] The unprocessed polyester mesh is rolled up, and the reel 603 is inserted into the center of the rolled polyester mesh. Then, air is inflated into the sleeve 602 through the air tube. The air entering the sleeve 602 then enters the reel 603 and is finally discharged into the expansion airbag 605 through the air hole 604. The expansion airbag 605 is inflated and clamped in the rolled polyester mesh, thereby fixing it to the outer end of the reel 603.

[0066] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A waterless dyeing polyester mesh dyeing and finishing process, characterized in that: The specific steps are as follows: S1: Printing a pattern on paper using thermal sublimation transfer ink to prepare a pattern to be transferred; S2: rolling up the polyester mesh to be dyed and fixing it on the transfer device; S3: Pull the polyester mesh cloth, clean it first, and use the transfer device to remove dust and impurities attached to the cloth; S4: The impurity-free polyester mesh and the paper with printed patterns are laid flat on the heating and pressurizing position of the transfer device, with the fabric on the top and the paper on the bottom; S5: Finally, the paper and the polyester fabric are pressed together by using a transfer device, and both are heated at the same time, so that the pattern on the paper is transferred to the polyester fabric, and the dyeing and finishing process of the polyester fabric is completed.

2. The waterless polyester mesh dyeing and finishing process according to claim 1, characterized in that: The transfer device in S2-S5 comprises a base (1), and a heating component (2) for heating and a fixing component (6) for fixing the polyester mesh cloth are provided on the top of the base (1); The heating assembly (2) comprises a heating box (202) fixedly arranged on the top of the base (1), a heat-conducting metal plate (201) fixedly arranged on the top of the heating box (202), and a heating plate (205) arranged inside the heat-conducting metal plate (201).

3. The waterless polyester mesh dyeing and finishing process according to claim 2, characterized in that: A sliding plate (203) is provided inside the heating box (202), the heating plate (205) is fixedly arranged on the top of the sliding plate (203), a layer of thermal conductive silicone grease (206) having heat conductive and lubricating effects is applied to the bottom of the heat conductive metal plate (201), and the top of the heating plate (205) is in contact with the thermal conductive silicone grease layer (206); A strip-shaped protrusion (204) is fixedly provided on the inner wall of the heating box (202), and the strip-shaped protrusion (204) is embedded in a groove on the sliding plate (203). A pressing plate (7) is provided on the top of the heat-conducting metal plate (201), and the pressing plate (7) is movably connected to the heating box (202) via a hinge.

4. The waterless polyester mesh dyeing and finishing process according to claim 3, characterized in that: A driving assembly (8) is provided on the rear side of the heating box (202), a slide groove is provided on the rear side of the heating box (202), the driving assembly (8) comprises a reciprocating screw rod (802), both ends of the reciprocating screw rod (802) are provided with end plates (805) via bearings, and the end plates (805) are fixed on the rear side of the heating box (202); The outer end of the reciprocating screw rod (802) is sleeved with a sliding seat (803), and the outer end of the sliding seat (803) is fixedly provided with a connecting piece (804). The front end of the connecting piece (804) extends into the interior of the heating box (202) through a sliding groove and is fixedly connected to the sliding plate (203), and a motor (801) for driving the reciprocating screw rod (802) to rotate is fixedly provided on one of the end plates (805).

5. The waterless polyester mesh dyeing and finishing process according to claim 3, characterized in that: Two pressure-applying assemblies (9) are provided on the front side of the pressure plate (7), and the pressure-applying assemblies (9) include a fixing plate (901) fixedly provided on the front side of the pressure plate (7), a tension spring (905) is fixedly provided at the bottom end of the fixing plate (901), and a sliding ring (904) is fixedly provided at the bottom end of the tension spring (905); The pressure-applying assembly (9) further comprises an adjusting screw (902) arranged at the top end of the base (1) via a rotating shaft, and a hexagonal screw head (903) is fixedly provided at the outer end of the adjusting screw (902). When the polyester mesh cloth is pressurized, the sliding ring (904) is arranged on the outer end of the corresponding adjusting screw (902) via a threaded sleeve.

6. The waterless polyester mesh dyeing and finishing process according to claim 2, characterized in that: A cleaning component (5) is provided on one side of the heating component (2), and the cleaning component (5) comprises an airflow box (501) fixedly arranged on the top of the base (1), and an exhaust groove (502) is provided on the top of the airflow box (501); An air guide tube (3) is fixedly provided on the front side of the air flow box (501), an air pump (4) is fixedly provided on the air guide tube (3), a fastening frame (504) is fixedly provided on the top of the air flow box (501), and a plurality of balls (505) are fixedly provided on the bottom end of the fastening frame (504).

7. The waterless polyester mesh dyeing and finishing process according to claim 6, characterized in that: The fastening frame (504) is provided with brackets (503) on both the front and rear sides, the brackets (503) are fixedly arranged on the top of the airflow box (501), the brackets (503) are provided with a pressure rod penetrating the brackets (503), and a fixing plate is fixedly arranged on the top of the pressure rod; A pressure spring is provided between the fixing plate and the top end of the bracket (503), and a fixing ring is sleeved on the bottom end of the pressure rod. The fixing ring is fixedly arranged on the top end of the fastening frame (504).

8. The waterless polyester mesh dyeing and finishing process according to claim 6, characterized in that: The fixing component (6) is arranged on a side of the cleaning component (5) away from the heating component (2), and the fixing component (6) comprises a vertical plate (601) fixedly arranged on the top of the base (1), a sleeve (602) is fixedly arranged on the rear side of the vertical plate (601), and an air pipe with a valve is fixedly arranged on the rear side of the sleeve (602); The vertical plate (601) is provided with a reel (603) penetrating the vertical plate (601) via a sealed bearing, the rear end of the reel (603) being in communication with the interior of the sleeve (602), an expansion airbag (605) being fixedly provided at the outer end of the reel (603), and a plurality of air holes (604) located inside the expansion airbag (605) being opened at the outer end of the reel (603).

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