JP2012139934A - Apparatus for turning flexible cylindrical body inside out - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus which brings a sheet of a seal member into properly close contact with all the periphery of a flexible cylindrical body even if the surface of the flexible cylindrical body has deep ruggedness.SOLUTION: A mouth ring 11 for annularly fixing the front edge of the flexible cylindrical body 2 is provided at the front edge, a pressure container 9 is formed behind the mouth ring 11, an introducing port for introducing the flexible cylindrical body 2 is formed at the rear part of the pressure container 9, a seal member 6 projected into the pressure container 9 and having a pair of sheets 16, 16 formed of flexible air tight material is attached to the introducing port, the front edge of each sheet 16, 16 is brought into pressure-contact with both surfaces of the flat flexible cylindrical body 2 passing through the introducing part by the fluid pressure in the pressure container 9, and the front edge of each sheet 16, 16 is divided into at least not smaller than 10 divisions, and the division are energized to directions in which the divisions approach the opposing sheets 16, 16.

Description

  The present invention relates to a device for turning over a flexible cylindrical body, and when the hose produced by reversing the inner and outer surfaces is turned into a use state by the convenience of production, or the lining material is turned over and turned into a pipeline. The present invention relates to a device for turning over a flexible cylindrical body, which is used in the case of being inserted and lined in a pipeline.

  Japanese Examined Patent Publication No. 40-12655 discloses a flexible cylindrical body that is manufactured by reversing the inner and outer surfaces of the cylindrical body in a normal state for the convenience of manufacturing, and is made normal by turning it over with fluid pressure. The method is shown.

  Japanese Patent Laid-Open No. 5-96621 discloses a method of lining a flexible tubular lining material by a fluid pressure as a method of lining a pipeline buried mainly in the ground, such as a gas conduit, a water pipe, and a sewer pipe. Is inserted into the pipe line while turning inside out so that the inner side is the outside, and the inner surface of the pipe line is pressed against the inner surface of the pipe line by the fluid pressure.

  In these methods, one end of the flexible cylindrical body is fixed in an annular shape, and fluid pressure is applied to the outer side of the rear portion thereof, so that the flexible cylindrical body is set to the outer side in the annular fixed portion. Turn it over to be.

  As an apparatus for that purpose, as shown in the above Japanese Patent Publication No. 40-12655, a flexible cylindrical body wound in a coil shape is accommodated in a pressure vessel, and its tip is fixed in an annular shape to a base. In addition, as described in Japanese Patent Laid-Open No. 5-96621, a flexible cylindrical body is drawn out from the annular fixing portion by turning fluid pressure into the pressure vessel and turned over. Place the flexible cylindrical body outside the pressure vessel, insert the flexible cylindrical body from the rear of the pressure vessel, penetrate the pressure vessel, and fix it annularly to the tip of the pressure vessel. It is known that a flexible cylindrical body is drawn out from the annular fixing portion and turned over by applying fluid pressure.

  The former device is suitable as a device that flips a flexible tubular body having a relatively small diameter and a relatively short length, but it is suitable for a flexible tubular body having a large diameter or a long flexible tubular body. Is not suitable. If such a flexible cylindrical body is to be turned over, a large pressure vessel is required to accommodate it, and the apparatus becomes large.

  According to the latter apparatus, such a problem does not occur. However, since the flexible cylindrical body penetrates the pressure vessel, the flexible cylindrical body is flexible at the portion of the introduction port that enters the pressure vessel. Although it is necessary to seal the periphery of a cylindrical body with a sealing member, it is difficult for the sealing member to be properly pressed and sealed over the entire circumference of the flexible cylindrical body.

  In the lining material used for the lining of the pipeline as described above, the thickness is necessary to ensure the strength, and in order to reverse the thick material and line it up, the small diameter material is inside the small diameter material. It must be of a structure that is inserted through.

  In particular, as shown in FIG. 1, the lining material 2 is affixed to the inner side of the pipe line 1 in the lining material of a sewer pipe. The layer 3 is formed, and one or several nonwoven fabric layers 4 are formed outside the airtight layer 3, and the nonwoven fabric layer 4 is impregnated with a reaction curable resin solution and cured to form an integral lining material 2. ing.

  However, since the lining material 2 is manufactured so that the inner and outer surfaces are reversed and turned upside down, the airtight layer 3 forming the innermost layer in the lining state is turned over before turning over as shown in FIG. Is the outermost part, and the large-diameter nonwoven fabric layer 4 is accommodated in the hermetic layer 3, and the pressure vessel 9 is accommodated in a partially folded state as shown in FIG. Become.

  In particular, in order to prevent the airtight layer 3 from breaking during expansion, the tubular woven fabric subjected to the airtight treatment as described above is used, and the stretchability is poor. Further, since the nonwoven fabric layer 4 is inferior in elasticity, it is difficult to expand the one formed to have a small diameter, and in order to accommodate it in the airtight layer 3 having a small diameter, a folded portion 5 is formed as shown in FIG. I must.

  In particular, when the nonwoven fabric layer 4 is formed in a plurality of layers, the diameter of the nonwoven fabric layer 4 located on the outer side in the lining state becomes larger, so that a large folded portion 5 is formed in the hermetic layer 3.

  Therefore, as shown in FIG. 2, the lining material 2 is in a state in which a plurality of nonwoven fabric layers 4 that are folded in a complicated manner are inserted into the airtight layer 3, and unevenness due to the folded portion 5 is generated on the surface of the airtight layer 3, Even if the sealing member 6 is pressed to the outside, the hermetic layer 3 and the sealing member 6 are not in close contact with each other in the concave portion of the hermetic layer 3, and a void 7 is generated.

  Further, since the sealing member 6 on the outer side from both side edges of the lining material 2 is cantilevered, the sealing member 6 cannot follow the side edges of the lining material 2 due to its rigidity, and the side edges of the hermetic layer 3 and both seals. A triangular space 8 is formed with the member 6. Therefore, the pressure fluid in the pressure vessel leaks backward through these voids 7 and 8.

  Further, fluid pressure acts from the outside of the seal member 6, and the fluid pressure acts rearward from the inlet 10 of the pressure vessel 9, so that the tip of the seal member 6 turns inside as shown in FIG. 3. There is a case where fluid pressure leaks backward from this turning portion.

Japanese Patent Publication No. 40-12655 Japanese Patent Laid-Open No. 5-96621

  The present invention has been made in view of such circumstances, and the seal member 6 is appropriately brought into close contact over the entire circumference of the flexible cylindrical body 2, and the surface of the flexible cylindrical body 2 is uneven. Even if it exists, it aims at providing the reversing apparatus of the flexible cylindrical body in which the sealing member 6 closely_contact | adheres to the flexible cylindrical body 2 along the unevenness | corrugation.

  Thus, in the present invention, a base for annularly fixing the tip of the flexible cylindrical body is provided at the tip, a pressure container is formed at the rear of the base, and the flexible cylinder is formed at the rear of the pressure container. An inlet for introducing a body is formed, and a sealing member made of a pair of sheets made of a flexible and airtight material protruding into the pressure vessel is attached to the inlet, and the leading end of the sheet is attached to the inside of the pressure vessel. The flat surface of the flat flexible cylindrical body passing through the introduction port is brought into pressure contact with the fluid pressure, and the leading edge of the sheet is divided into at least 10 sections, and each section approaches each sheet facing each other. It is characterized in that it is urged in the direction.

  In the apparatus of the present invention, a sliding shaft corresponding to the section is slidably fitted to a support member fixed to the outer shell of the pressure vessel, and the section corresponding to the tip of the sliding shaft is rotated. It is preferable that the shaft is movably supported and the sliding shaft is biased in a direction approaching the seat by a spring means. Moreover, it is preferable to form a notch between the section and the adjacent section in the sheet.

  Moreover, in the apparatus of this invention, it is preferable to press-contact the press-contact member which consists of a soft material across the front end surface of the said both sheet | seat in the position where the both-sides edge of the said flexible cylindrical body passes. In this apparatus, it is preferable that the pressure contact member is pressed against both side edges of the flexible cylindrical body.

  Furthermore, in the apparatus of this invention, it is preferable to provide a silencer behind the said inlet. In this case, it is preferable that the silencer is formed by attaching a soft plastic foam in a box through which the flexible cylindrical body passes.

  According to the present invention, the leading end of the sheet constituting the seal member is divided into a plurality of sections, and each section is biased in a direction approaching the facing sheet. Even if the surface of the flexible cylindrical body 2 has irregularities, the sealing member 6 is appropriately pressed along the irregularities to form the voids 7 as described above. In addition, as shown in FIG. 2, the leading edge of the sheet does not turn inside, and the pressure fluid in the pressure vessel does not leak out.

Cross-sectional view showing a state where a flexible tubular body is used as a lining material for a pipeline Cross-sectional view of flexible tubular body passing through sealing member in conventional example Longitudinal sectional view of flexible cylindrical body passing through seal member in conventional example Central longitudinal sectional view showing an example of the apparatus of the present invention Central longitudinal sectional view of the pressure vessel in the present invention VI-VI sectional view in FIG. 8 of the pressure vessel in the present invention VII-VII sectional view in FIG. 5 in the present invention VIII-VIII sectional view in FIG. 6 in the present invention The expanded cross-sectional view which shows the state which presses the sealing member in this invention Enlarged central longitudinal sectional view showing a state of pressing the seal member in the present invention (A) is XI-XI sectional drawing in FIG. 4, (b) is BB sectional drawing in (a). (A) is XII-XII sectional drawing in FIG. 4, (b) is BB sectional drawing in (a).

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 4 shows an apparatus for turning over a flexible cylindrical body according to the present invention, in which the tip of the flexible cylindrical body 2 is fixed to the base 11 in an annular shape, and the inside of the pressure vessel 9 provided at the rear part thereof The flexible cylindrical body 2 that is fed into the base 11 with a pressure fluid such as water or compressed air and is fixed to the base 11 by the pressure of the pressure fluid so that the inside is the outside as shown in the drawing. The inside of the flexible tubular body 2 turned upside down is sent out from the base 11 forward.

  A front shielding device 12 is provided between the base 11 and the pressure vessel 9, a rear shielding device 13 is provided at the rear of the pressure vessel 9, and a silencer is provided at the rear of the rear shielding device 13. 14 is provided.

  Thus, as shown in FIGS. 5 and 6, the pressure vessel 9 is formed with an introduction port 10 for introducing the flexible cylindrical body 2 at the rear portion of the outer shell body 15. A base portion of a seal member 6 including a pair of sheets 16 and 16 is attached to the front portion.

  Each of the sheets 16 and 16 has a width larger than the width of the flexible tubular body 2 and is attached to the front portion of the introduction port 10 with the passage of the flexible tubular body 2 interposed therebetween. It extends toward the front from the mouth 10 and is opposed to the pair of sheets 16 and 16 so as to be sandwiched from above and below the flexible cylindrical body 2.

  As shown in FIG. 9, the leading ends of the sheets 16 and 16 are divided into a large number of compartments 17, and cuts 18 are formed between the compartments 17. It can be bent. The number of the compartments 17 should be as large as possible, but it must be at least 10 or more.

  As shown in FIGS. 5 to 8, support members 20 and 20 supported by connecting members 19 and 19 are attached to the outer shell body 15 above and below the front ends of the sheets 16 and 16, A slide shaft 21 is pierced through the support members 20 at a position corresponding to the section 17 so as to be slidable up and down.

  A section 17 of the seats 16, 16 is pivotally supported at the tip of the slide shaft 21 via a mounting bracket 22, and is interposed between the support members 20, 20 and the mounting bracket 22. By the mounted spring means 23, the opposed sheets 16, 16 are urged in a direction approaching each other.

  In order to use the apparatus of the present invention, the flexible cylindrical body 2 is passed from the rear of the apparatus through the inlet 10 and between the sheets 16 and 16 and through the pressure vessel 9, and the flexible cylindrical body. The tip of 2 is fixed to the base 11 in an annular shape.

  In this state, when the pressure fluid is fed into the pressure vessel 9 from the pressure fluid inlet 70, fluid pressure acts on the outside of the rear portion of the annular fixed portion of the flexible cylindrical body 2, and the flexible cylindrical body. As shown in FIG. 4, 2 is turned over so that the inner side is the outer side in the folded portion 2 a, and accordingly, the folded portion 2 a is pushed forward of the base 11.

  Then, the rear flexible cylindrical body 2 is pulled forward and sequentially turned over at the folded portion 2a. The folded tubular portion 2a is sequentially turned over while the folded portion 2a proceeds forward, and the flexible tube is turned. It is flipped over the entire length of the body 2.

  Further, in the case of lining the pipe 1 described above, a reaction hardening type adhesive is injected into the lining material 2 to impregnate the nonwoven fabric layer 4, and the pipe line is turned over with fluid pressure as described above. The nonwoven fabric layer 4 impregnated with the adhesive comes into contact with the inner surface of the pipe line 1 by being fed into the pipe 1, and can be lined on the pipe line 1 by curing the adhesive.

  In the apparatus of the present invention, the spring means 23 is interposed between the support members 20, 20 and the mounting bracket 22, and the leading ends of the sheets 16, 16 are pressed against each other for each of the sections 17 by the spring means 23. Therefore, as shown by a solid line in FIG. 10, the tips of the sheets 16 and 16 are pressed against each other, and the pressure fluid in the pressure vessel 9 does not leak from between the sheets 16 and 16.

  Further, when the flexible cylindrical body 2 is inserted between the sheets 16 and 16, the sheets 16 and 16 are pushed open by the flexible cylindrical body 2, and as shown by a chain line in FIG. 9 and FIG. 21 opens up and down while compressing the spring means 23, and the flexible cylindrical body 2 can pass between the sheets 16 and 16.

  The leading ends of the sheets 16 and 16 are pressed against the flexible cylindrical body 2 by the elastic force of the spring means 23 for each section 17, and the pressing force is constant over the entire width of the flexible cylindrical body 2. Even if the surface of the lining material 2 is uneven, the void 7 as shown in FIG. 2 is not formed, and the adhesive applied to the inner surface is uniformly applied.

  Further, the front ends of the sheets 16 and 16 are attached to the slide shaft 21 and can move up and down against the elasticity of the spring means 23 at that position. 3 and cannot be turned inward by the fluid pressure in the pressure vessel 9 as shown in FIG.

  In the present invention, since the slide shaft 21 presses the sheets 16 and 16 only in the vertical direction, the position of the side edge of the flexible cylindrical body 2 and the section 17 of the sheets 16 and 16 is determined. Depending on the relationship, it is unavoidable that the void 8 is formed between the side edge of the flexible cylindrical body 2 and the opposed surfaces of the sheets 16 and 16.

  In this case, a pressure contact member 24 made of a flexible material is pressed across the front end surfaces of the sheets 16 and 16 on both side edges of the flexible cylindrical body 2, and the pressure in the pressure vessel 9 from the space 8. It is preferable to prevent the fluid from leaking out.

  A pressure contact device 25 that presses the pressure contact member 24 is shown in FIGS. In this pressure welding device 25, a pair of upper and lower bars 26 are fixed between both side walls of the pressure vessel 9, and a pair of left and right sliding members 27 are slidably attached to the bars 26. A male screw member 29 is screwed into the attached female screw member 28, and the male screw member 29 can be rotated by a handle 30 from the outside of the pressure vessel 9 to adjust the position of the pressure contact member 24. ing.

  A sliding rod 32 is slidably supported by a support plate 31 attached between the sliding members 27, and the pressure contact member 24 is attached to the tip of the sliding rod 32. , 16 is brought into pressure contact with the tip surface.

  Further, by rotating the handle 30, the side surface of the pressure contact member 24 can be pressed against the side edge of the flexible tubular body 2 to completely close the space 8, and the space 8 can be closed rearwardly. The pressure fluid can be prevented from leaking.

  However, it is difficult to completely prevent leakage of the pressure fluid to the rear, and some leakage is unavoidable. At that time, the pressure fluid is discharged from the inlet 10 and a discharge sound is generated.

  Therefore, in order to reduce the emitted sound, it is preferable to provide a silencer 14 behind the introduction port 10. The silencer 14 is preferably formed by attaching a soft plastic foam 35 in a box 34 through which the flexible cylindrical body 2 passes.

  As shown in FIG. 11, the rear shielding device 13 has openings 37, 38 through which the flexible cylindrical body 2 passes on the front and rear wall surfaces of the box body 36, and the flexibility that passes through the openings 37, 38. A shielding plate 39 is provided so as to face each other up and down with the cylindrical body 2 interposed therebetween, and a pressing portion 40 made of a flexible material is provided at opposite ends of the shielding plate 39. Reference numeral 41 denotes a packing that seals between the rear wall surface of the rear shielding device 13 and the rear surface of the shielding plate 39.

  A female screw member 42 is attached to both shielding plates 39, and a male screw member 43 is screwed to the female screw member 42. A drive rod 48 is driven via bevel gears 46 and 47 by a motor 44 and a speed reducer 45 provided on one side of the box body 36, and bevel gears 49 provided on both ends of the drive rod 48, 50, the driving bar 51 provided above and below is driven, and the bevel gear 52 provided on the driving bar 51 meshes with the bevel gear 53 provided at the end of the male screw member 43, and the female screw The shielding plate 39 is opened and closed up and down via the member 42, and the flexible tubular body 2 is sandwiched and shielded.

  Since the rear end of the flexible tubular body 2 passes through the rear end thereof, and a belt for controlling the turning over of the flexible tubular body 2 is sewn, the cross section of the flexible tubular body 2 The shape is disordered, it is difficult for the sheets 16 and 16 to pass through the front end portions, and a large amount of the pressure fluid in the pressure vessel 9 leaks from the surroundings, and the pressure vessel 9 or the inside of the flexible tubular body 2 turned inside out. There is a possibility that sufficient pressure cannot be applied, and that turning over cannot proceed.

  In such a case, the shielding plate 39 is closed and the belt is clamped by the clamping unit 40 to secure the fluid pressure in the pressure vessel 9 or the flexible tubular body 2 turned upside down. The inside-out of the cylindrical body 2 can be advanced.

  Further, as shown in FIG. 12, the front shielding device 12 has openings 55 and 56 through which the flexible cylindrical body 2 passes on the front and rear wall surfaces of the box body 54, and can pass through the openings 55 and 56. A shielding plate 57 is provided on the upper portion of the flexible cylindrical body 2, and a clamping part 58 made of a flexible material is provided at the lower end of the shielding plate 57, and faces the clamping part 58. A receiving part 59 is provided in the lower part. Reference numeral 60 denotes a packing that seals between the rear wall surface of the front box 54 and the back surface of the shielding plate 57.

  A female screw member 61 is attached to the shielding plate 57, and a male screw member 62 is screwed to the female screw member 61. A drive bar 67 is driven via bevel gears 65 and 66 by a motor 63 and a speed reducer 64 provided on the upper portion of the box body 54, and the bevel gear 68 provided on the drive bar 67 is connected to the male screw. It meshes with a bevel gear 69 provided at the upper end of the member 62, opens and closes the shielding plate 57 up and down via the female screw member 61, and is a flexible cylindrical body between the pinching portion 58 and the receiving portion 59. 2 is pinched and shielded.

  The front shielding device 12 is shielded only by the shielding plate 57 provided on the upper portion of the flexible cylindrical body 2, but the shielding plate provided up and down like the rear shielding device 13. The flexible tubular body 2 can be sandwiched from above and below.

  When the apparatus of the present invention is used for the lining of the pipe, the adhesive applied to the inner surface of the flexible cylindrical body 2 after the flexible cylindrical body 2 is turned over and inserted into the pipe Must be cured and bonded to the conduit.

  In this case, the pressure between the pressure vessel 9 and the base 11 is shielded by the front shielding device 12 to maintain the fluid pressure in the base 11 and the inverted flexible cylindrical body 2 connected thereto. The pressure vessel 9 and the device behind it can be removed.

2 Flexible tubular body (lining material)
6 Seal member 9 Pressure vessel 10 Inlet 11 Base 14 Muffler 15 Outer shell 16 Sheet 17 Partition 18 Notch 20 Support member 21 Slide shaft 23 Spring means 24 Pressure contact member 34 Box 35 Foam

Claims (7)

A base (11) for annularly fixing the tip of the flexible cylindrical body (2) is provided at the tip, and a pressure vessel (9) is formed at the rear of the base (11), and the pressure vessel (9) A pair of inlets (10) for introducing the flexible cylindrical body (2) is formed at the rear, and the inlets (10) are made of a flexible and airtight material protruding into the pressure vessel (9). The sealing member (6) made of the sheet (16, 16) is attached, and the leading end of the sheet (16, 16) passes through the inlet (10) by the fluid pressure in the pressure vessel (9). The flexible tubular body (2) is pressed against both surfaces, and the leading end of the sheet (16, 16) is divided into at least 10 sections (17), and the sections (17) face each other. It is biased in the direction approaching the seat (16, 16), Turning device for FLEXIBLE cylindrical body A slide shaft (21) corresponding to the section (17) is slidably fitted to a support member (20, 20) fixed to the outer shell (15) of the pressure vessel (9), and the slide shaft The section (17) corresponding to the tip of (21) is pivotally supported, and the slide shaft (21) is urged by a spring means (23) in a direction approaching the seat (16, 16). The inside-out apparatus for a flexible cylindrical body according to claim 1, The flexible cylindrical shape according to claim 1 or 2, wherein a cut (18) is formed between the section (17) and the adjacent section (17) in the sheet (16, 16). Body flipping device A pressure contact member (24) made of a flexible material is pressure-contacted across the front end surfaces of the two sheets (16, 16) at positions where both side edges of the flexible cylindrical body (2) pass. The inside-out apparatus of the flexible cylindrical body according to claim 1, 2, or 3 The device for turning over a flexible tubular body according to claim 4, wherein the pressure contact member (24) is brought into pressure contact with both side edges of the flexible tubular body (2). The inside-out apparatus for a flexible cylindrical body according to claim 1, 2, 3, 4, or 5, wherein a silencer (14) is provided behind the introduction port (10). The silencer (14) is characterized in that a flexible plastic foam (35) is stuck in a box (34) through which the flexible cylindrical body (2) passes. Device for turning over flexible tubular body

Images