JP2006336334A - Rubber bag body and its manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rubber bag body and its manufacturing method for forming a sealed part in strength equal to a cylindrical member, by surely sealing an end part of the cylindrical member. <P>SOLUTION: Since an opening end part of the cylindrical member 10 is respectively sealed by respective sheet-like members 41 and 42, the opening end part of the cylindrical member 10 can be surely sealed by the respective sheet-like members 41 and 42. A sealing part 43 for sealing the opening end part of the cylindrical member 10 is formed as a laminated structure similar to the cylindrical member 10, and since stress is not concentrated on a part of the respective sheet-like members 41 and 42 even if gas or liquid is filled in the cylindrical member 10, the sealing part 43 can be formed in the strength equal to the cylindrical member 10, and leakage of the gas and the liquid from the inside of the cylindrical member 10 can be prevented over a long period. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a rubber bag used for an oil fence, a rubber weir, a tide door, and the like.

  Generally, as this type of rubber bag body, a cylindrical member formed by winding a rubber sheet having a reinforcing layer into a flat cylindrical shape, and a reinforcing layer respectively disposed on the upper side and the lower side of the cylindrical member, A long cylindrical body composed of a pair of outer layer members made of a rubber member and a cylindrical member and a rubber member formed so as to cover each outer layer member is molded in advance, and the cylindrical body is formed as necessary. In addition to cutting to a predetermined length and sealing the open end of a cylindrical member that is opened by cutting, there is known one that can be filled with a predetermined gas or liquid (for example, a patent) Reference 1).

Further, as shown in FIG. 13, the opening end of the cylindrical member has a V-shaped sealing member 51 formed of an unvulcanized rubber member on the inner peripheral surface in the vicinity of the opening end of the cylindrical member 50. After the insertion, the sealing member 51 is heated while being pressurized together with the cylindrical member 50, and is sealed by vulcanizing and bonding the inner peripheral surface of the cylindrical member 50 and the sealing member 51.
JP-A-6-304555

  However, in the rubber bag body, it is difficult to bond the tubular member 50 and the seal member 51 without a gap, and gas or liquid in the tubular member 50 leaks from the gap between the tubular member 50 and the seal member 51. There was a problem.

  Further, as shown in FIG. 14, when gas or liquid is filled in the cylindrical member 50, stress concentrates on a bent portion 51 a bent in a V shape in the sealing member 51, so that the sealing member 51 is compared with the cylindrical member 50. There was a problem that the strength of the steel was easily lowered.

  The present invention has been made in view of the above problems, and the object of the present invention is to reliably seal the end of the cylindrical member, and to make the sealed portion as strong as the cylindrical member. An object of the present invention is to provide a rubber bag that can be formed and a method for manufacturing the same.

  In order to achieve the above object, the present invention provides a rubber bag body having a cylindrical member formed by laminating rubber sheets in a flat cylindrical shape and having an open end sealed, and the open end of the cylindrical member. A plurality of sheet-like members stacked on top of each other so as to be sealed, and the inner rubber sheet extends more in the axial direction of the tubular member than the outer rubber sheet on the opening end side of the cylindrical member In this way, the end portions of the respective sheet-like members are pasted from the outer peripheral surface side of the tubular member to the respective rubber sheets having a step shape.

  Thereby, while the opening edge part of a cylindrical member is covered by the several sheet-like member overlaid on each other, since the edge part of each sheet-like member is each affixed on each rubber sheet of a cylindrical member, it is cylindrical. The open end of the member is sealed by each sheet-like member. Moreover, since each sheet-like member is overlapped with each other and attached to each rubber sheet of the tubular member, a portion that seals the opening end of the tubular member has a laminated structure similar to that of the tubular member. Furthermore, since each sheet-like member is affixed to each rubber sheet from the outer peripheral surface side of the cylindrical member, there is no need to bend each sheet-like member into an acute angle when affixing to each rubber sheet. Even if it is filled with a predetermined gas or liquid, stress is not concentrated on a part of each sheet-like member.

  Further, the present invention provides a method for manufacturing a rubber bag body in which an opening end portion of a cylindrical member formed by laminating rubber sheets in a flat cylindrical shape is sealed, and the opening end portion side of the cylindrical member is The inner rubber sheet is formed in a step shape so as to extend in the axial direction of the cylindrical member than the outer rubber sheet, and the opening end of the cylindrical member is covered with a plurality of sheet-like members stacked on each other. The open end of the tubular member is sealed by sticking the end of each sheet-like member from the outer peripheral surface side of the tubular member to each rubber sheet having a stepped shape.

  Thereby, while the opening edge part of a cylindrical member is covered by the several sheet-like member overlaid on each other, since the edge part of each sheet-like member is each affixed on each rubber sheet of a cylindrical member, it is cylindrical. The open end of the member is sealed by each sheet-like member. Moreover, since each sheet-like member is overlapped with each other and attached to each rubber sheet of the tubular member, a portion that seals the opening end of the tubular member has a laminated structure similar to that of the tubular member. Furthermore, since each sheet-like member is affixed to each rubber sheet from the outer peripheral surface side of the cylindrical member, there is no need to bend each sheet-like member into an acute angle when affixing to each rubber sheet. Even if it is filled with a predetermined gas or liquid, stress is not concentrated on a part of each sheet-like member.

  According to the present invention, since the opening end portion of the tubular member is sealed by each sheet-like member, the end portion of the tubular member can be reliably sealed. Moreover, the part which seals the opening edge part of a cylindrical member becomes a laminated structure similar to a cylindrical member, and even if gas or a liquid is filled in a cylindrical member, stress concentrates on a part of each sheet-like member. Therefore, the portion that seals the opening end of the cylindrical member can be formed with the same strength as the cylindrical member, and the leakage of gas and liquid from within the cylindrical member can be prevented over a long period of time. Can do.

  1 to 10 show an embodiment of the present invention. FIG. 1 is a cross-sectional view in the width direction showing components of the cylindrical body, FIG. 2 is a cross-sectional view in the width direction of the cylindrical body, and FIG. FIG. 4 is a perspective view of the main part of the cylindrical body from which the rubber sheet on the outer peripheral surface side of the cylindrical member is partially removed, and FIG. The principal part perspective view of the cylindrical body which shows the state before sticking the 1st unvulcanized sheet-like member to the opening edge part of a cylindrical member, FIG. 6: is a 1st unvulcanized sheet in the opening edge part of a cylindrical member. The principal part perspective view of the cylindrical body which shows the state which affixed the cylindrical member, FIG. 7: is the principal part of the cylindrical body which shows the state before sticking a 2nd unvulcanized sheet-like member to the opening edge part of a cylindrical member FIG. 8 is a perspective view of the main part of the cylindrical body showing a state where the second unvulcanized sheet-like member is attached to the opening end of the cylindrical member, and FIG. Vulcanized rubber components and Tubular body main part perspective view of showing a patch Keru state the layer member, FIG. 10 is a longitudinal sectional view of a rubber bag showing a state pasted by vulcanization bonding the respective sheet-like member in the tubular member.

  As shown in FIG. 1, the rubber bag according to this embodiment includes an unvulcanized cylindrical member 10 ′ obtained by winding an unvulcanized rubber sheet 11 ′ in a flat cylindrical shape a plurality of times, and an unvulcanized cylindrical member 10 ′. The sheet-shaped unvulcanized outer layer member 20 ′ disposed on the upper side and the lower side of the sulfur tubular member 10 ′, and the unvulcanized tubular member 10 ′ and the unvulcanized outer layer member 20 ′ are disposed on the outside. A plurality of unvulcanized rubber members 30 ′ and an unvulcanized release sheet 40 ′ provided in the unvulcanized cylindrical member 10 ′ are arranged in a vulcanization mold (not shown), and the vulcanization mold is pressurized. The long cylindrical body 1 is preliminarily formed by heating while heating (see FIG. 2), the cylindrical body 1 is cut into a predetermined length as necessary, and the cylindrical member 10 opened by cutting is cut. Manufactured by sealing the open end.

  The unvulcanized rubber sheet 11 'is formed of a reinforcing layer made of fibers such as polyester and polyamide, and a rubber material made of natural rubber or synthetic rubber that covers the reinforcing layer.

  Each unvulcanized outer layer member 20 'is formed of a reinforcing layer made of a fiber such as polyester or polyamide, and a rubber material made of natural rubber or synthetic rubber that covers the reinforcing layer.

  Each unvulcanized rubber member 30 'is formed from a rubber material made of natural rubber or synthetic rubber.

  The unvulcanized release sheet 40 ′ is formed of a rubber material whose upper surface is not vulcanized and bonded to the inner peripheral surface of the unvulcanized cylindrical member 10 ′, and whose lower surface is the inner peripheral surface of the unvulcanized cylindrical member 10 ′. It is formed from a rubber material that is vulcanized and bonded.

  Moreover, as shown in FIG. 2, the cylindrical body 1 manufactured as described above includes a cylindrical member 10 formed by winding a rubber sheet 11 having a reinforcing layer into a flat cylindrical shape a plurality of times, and a cylindrical member. A pair of sheet-like outer layer members 20 disposed on the upper side and the lower side of the cylindrical member 10, a rubber member 30 formed so as to cover the cylindrical member 10 and each outer layer member 20, and an inner part of the cylindrical member 10 A release sheet 40 vulcanized and bonded to the lower surface of the peripheral surface is provided, and a gap 10 a is formed between the upper surface of the release sheet 40 and the tubular member 10, and a predetermined amount is formed in the tubular member 10. The gas or liquid can be filled.

  A manufacturing method for manufacturing a rubber bag body from a long tubular body 1 first cuts the tubular body 1 into a predetermined length as needed, and rubber in the vicinity of the cut portion of the tubular body 1. The member 30 and each outer layer member 20 are removed from the cut portion by a predetermined width (see FIG. 3), and the outer rubber sheet 11a of the tubular member 10 in the vicinity of the cut portion is exposed. Next, the outer rubber sheet 11a on the opening end side of the tubular member 10 is removed over the entire circumference by a width L that is approximately half of the exposed width (see FIG. 4), and the inner side of the outer rubber sheet 11a is removed. The inner rubber sheet 11b wound around is exposed. That is, the inner rubber sheet 11b is formed on the opening end side of the cylindrical member 10 in a stepped shape extending in the axial direction of the cylindrical member 10 more than the outer rubber sheet 11a.

  Subsequently, the opening end of the tubular member 10 is covered with the first unvulcanized sheet-like member 41 ′, and the end of the first unvulcanized sheet-like member 41 ′ is covered with the inner rubber sheet 11b and the outer periphery of the tubular member 10 Affixing from the surface side (see FIGS. 5 and 6). Further, the second unvulcanized sheet-like member 42 ′ is overlaid on the first unvulcanized sheet-like member 41 ′, and the opening end of the tubular member 10 is covered with the second unvulcanized sheet-like member 42 ′. The edge part of 2nd unvulcanized sheet-like member 42 'is affixed on the outer side rubber sheet 11a from the outer peripheral surface side of the cylindrical member 10 (refer FIG.7 and FIG.8). Here, each unvulcanized sheet-like member 41 ′, 42 ′ is formed of a reinforcing layer made of a fiber such as polyester or polyamide, and a rubber material made of natural rubber or synthetic rubber that covers the reinforcing layer.

  Subsequently, the unvulcanized outer layer member 20 ′ cut to a predetermined length is disposed on the upper surface and the lower surface of the second unvulcanized sheet-like member 42 ′, respectively, and is formed to have a predetermined size on the outside thereof. A plurality of unvulcanized rubber members 30 'are arranged and heated while being pressurized in a vulcanization mold (not shown).

  As a result, as shown in FIG. 10, the first sheet-like member 41 closes the opening end of the tubular member 10, and the end of the first sheet-like member 41 becomes the inner rubber sheet 11 b of the tubular member 10. Affixed by vulcanization adhesion. The second sheet-like member 42 closes the opening end of the tubular member 10, and the end of the second sheet-like member 42 is attached to the outer rubber sheet 11 a of the tubular member 10 by vulcanization adhesion. That is, the open end of the cylindrical member 10 is sealed by the sheet-like members 41 and 42, respectively. Moreover, the 1st sheet-like member 41 and the 2nd sheet-like member 42 are piled up mutually, and are each affixed on each rubber sheet 11b, 11a of the cylindrical member 10, and each sheet-like member 41, 42 is cylindrical. Since the rubber sheet having the reinforcing layer is formed similarly to the rubber sheet 11 of the member 10, the sealing portion 43 that seals the opening end portion of the cylindrical member 10 has a laminated structure similar to that of the cylindrical member 10. Furthermore, since each sheet-like member 41 and 42 is affixed to each rubber sheet 11b and 11a of the cylindrical member 10 from the outer peripheral surface side of the cylindrical member 10, in order to affix on the cylindrical member 10, each sheet-like member 41 , 42 need not be bent at an acute angle, and even if a predetermined gas or liquid is filled in the tubular member 10, stress is not concentrated on a part of each of the sheet-like members 41, 42.

  Thus, according to this embodiment, since the opening end part of the cylindrical member 10 is each sealed by each sheet-like member 41 and 42, the opening end part of the cylindrical member 10 is each sealed by each sheet-like member 41 and 42. Can be securely sealed.

  Moreover, the sealing part 43 which seals the opening edge part of the cylindrical member 10 becomes a laminated structure similar to the cylindrical member 10, and each sheet-like member 41, 42 even if the cylindrical member 10 is filled with gas or liquid. Therefore, the sealing portion 43 can be formed with the same strength as that of the cylindrical member 10, and leakage of gas and liquid from the cylindrical member 10 can be prevented over a long period of time. be able to.

  Further, the outer rubber sheet 11a on the opening end side of the cylindrical member 10 is partially removed, so that the opening end side of the cylindrical member 10 is formed in a stepped shape. A rubber bag body having an arbitrary length can be easily manufactured from the cylindrical body 1 made, and leakage of gas and liquid from the manufactured rubber bag body can be prevented over a long period of time.

Moreover, since each sheet-like member 41, 42 is formed from a rubber sheet having a reinforcing layer, leakage of gas and liquid from the inside of the tubular member 10 can be prevented for a longer period of time.
In the present embodiment, the two sheet-like members 41 and 42 are attached to the opening end of the cylindrical member 10 formed by wrapping the rubber sheet 11 twice. As shown in Fig. 3, it is possible to attach three sheet-like members to the opening of the cylindrical member 10 formed by winding the rubber sheet 11 in triplicate.

  Specifically, after the opening end portion of the cylindrical member 10 is first exposed, the entire circumference of the tubular member 10 is covered by the width of about 2/3 of the width exposing the first rubber sheet 11c wound on the outermost periphery side. One sheet is removed to expose the second rubber sheet 11d wound inside the first rubber sheet 11c. Next, the second rubber sheet 11d is removed over the entire circumference by approximately half the width of the exposed width, and the third rubber sheet 11e wound inside the second rubber sheet 11d is removed. Expose. Subsequently, the sheet-like members 44, 45, and 46 are attached to the rubber sheets 11e, 11d, and 11c, respectively, and the opening ends of the cylindrical member 10 are closed by the sheet-like members 44, 45, and 46, respectively. Each sheet-like member 44, 45, 46 is a rubber sheet similar to the first sheet-like member 41 and the second sheet-like member 42.

  As described above, by providing a plurality of steps on the opening end side of the cylindrical member 10, the opening end of the cylindrical member can be closed by three or more sheet-like members.

  Moreover, in this embodiment, although the thing using the cylindrical member 10 formed by winding one rubber sheet 11 over multiple times was shown, as shown in FIG. 12, it wound only once. It is also possible to use the cylindrical member 10 in which another rubber sheet 11 wound only once on the outer peripheral side of the rubber sheet 11 is overlapped.

  In addition, in this embodiment, while removing the rubber member 30 and each outer layer member 20 of the cutting part in the cylindrical body 1, the outer side rubber sheet 11a of the exposed cylindrical member 10 is removed, and the cylindrical member 10 is removed. Although the sheet-like members 41 and 42 are formed on the tubular member 10 so as to be stepped, the inner rubber sheet 11b is more tubular than the outer rubber sheet 11a in forming the tubular body 1. When the outer end member 20 and the rubber member 30 are formed so as to extend in the axial direction of the member 10 and the opening end side of the tubular member 10 is exposed, the opening end of the tubular member 10 is sealed. Further, it is possible to save the trouble of removing the rubber member 30, each outer layer member 20, and the rubber sheet 10.

  In the present embodiment, the sheet-like members 41 and 42 are attached to the tubular member 10 by vulcanization adhesion. However, the sheet-like members 41 and 42 are bonded to the tubular member 10 with an adhesive. It is also possible to affix to.

The width direction sectional view which shows the component of the cylindrical body which shows one Embodiment in this invention Cross-sectional view of the cylindrical body in the width direction A perspective view of the main part of the cylindrical body from which the rubber member and each outer layer member in the vicinity of the cutting part are removed The principal part perspective view of the cylindrical body which removed the rubber sheet of the outer peripheral surface side of a cylindrical member partially The principal part perspective view of the cylindrical body which shows the state before sticking the 1st unvulcanized sheet-like member to the opening edge part of a cylindrical member. The principal part perspective view of the cylindrical body which shows the state which affixed the 1st unvulcanized sheet-like member on the opening end part of the cylindrical member The principal part perspective view of the cylindrical body which shows the state before sticking a 2nd unvulcanized sheet-like member to the opening edge part of a cylindrical member. The principal part perspective view of the cylindrical body which shows the state which affixed the 2nd unvulcanized sheet-like member on the opening edge part of the cylindrical member The principal part perspective view of the cylindrical body which shows the state which affixes an unvulcanized rubber member and an outer-layer member in the opening edge part vicinity of a cylindrical member. Longitudinal sectional view of a rubber bag showing a state in which each sheet-like member is attached to a tubular member by vulcanization adhesion Longitudinal sectional view of a rubber bag showing a modification of the opening end of the cylindrical member in the present embodiment Cross-sectional view in the width direction of a cylindrical body showing a modification of the cylindrical member in the present embodiment Longitudinal sectional view of a cylindrical member in a conventional rubber bag showing a state where a seal member is pasted in the vicinity of the opening end Longitudinal cross-sectional view of a cylindrical member in a conventional rubber bag showing a state filled with gas

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Cylindrical body, 10 ... Cylindrical member, 10a ... Gap, 10 '... Unvulcanized cylindrical member, 11 ... Rubber sheet, 11a ... Outer rubber sheet, 11b ... Inner rubber sheet, 11c ... First rubber sheet, 11d ... second rubber sheet, 11e ... third rubber sheet, 11 '... unvulcanized rubber sheet, 20 ... outer layer member, 20' ... unvulcanized outer layer member, 30 ... rubber member, 30 '... unvulcanized rubber member , 40 ... release sheet, 40 '... unvulcanized release sheet, 41 ... first sheet-like member, 41' ... first unvulcanized sheet-like member, 42 ... second sheet-like member, 42 '... second Unvulcanized sheet-like member, 43 ... sealing part, 44 ... sheet-like member, 45 ... sheet-like member, 46 ... sheet-like member.

Claims (6)

In a rubber bag having a cylindrical member formed by laminating rubber sheets in a flat cylindrical shape and having an open end sealed,
A plurality of sheet-like members stacked on top of each other to cover the opening end of the tubular member,
The opening end side of the tubular member is formed in a stepped shape so that the inner rubber sheet extends in the axial direction of the tubular member relative to the outer rubber sheet, and each rubber sheet that forms a stepped shape is arranged on each sheet. A rubber bag body, wherein the end of the cylindrical member is pasted from the outer peripheral surface side of the cylindrical member. The rubber bag according to claim 1, wherein each of the sheet-like members is formed of a rubber sheet having a reinforcing layer. In the manufacturing method of the rubber bag body formed by sealing the opening end of the cylindrical member formed by laminating the rubber sheets in a flat cylindrical shape,
The opening end side of the cylindrical member is formed in a stepped shape so that the inner rubber sheet extends in the axial direction of the cylindrical member than the outer rubber sheet,
The opening end of the tubular member is covered with a plurality of sheet-like members stacked on each other, and the end of each sheet-like member is attached to each rubber sheet having a step shape from the outer peripheral surface side of the tubular member. The manufacturing method of the rubber bag characterized by sealing the opening end of a cylindrical member by this. The rubber-made product according to claim 3, wherein a part of the rubber sheet on the opening end side of the cylindrical member is removed from the outer peripheral surface side to form a stepped shape on the opening end side of the cylindrical member. A method for manufacturing a bag. The method for producing a rubber bag according to claim 3 or 4, wherein an end portion of the sheet-like member is attached to the rubber sheet by vulcanization adhesion. A rubber sheet having a reinforcing layer is used for each of the sheet-like members. The method for producing a rubber bag according to claim 3, 4 or 5.

Images