JP2018204351A - Bag body for lifting gate and manufacturing method of the same - Google Patents

Abstract

To provide a bag body for a lifting gate which can be vulcanized not only by a vulcanizing can but also by a press vulcanizer, and in which there is no possibility of liquid leakage for a long term.SOLUTION: A bag body 10 for a lifting gate is formed to be a bag shape using a sheet 12 for forming a bag body, and comprises: a main body 14 forming a space S housing liquid; a flap portion 16 extending from the main body 14; and a boundary 18. The sheet 12 for forming a bag body is formed by overlapping a plurality of sheets of rubber coated fabric. Dots X11 to X44 on the sheet 12 for forming a bag body which are to be a starting point 18s or an ending point 18e of the boundary 18 are separated from an outer peripheral edge 12jN (N=1 to 20). The main body 14 is formed by folding back or bending the sheet for forming a bag body. The flap portion 16 is folded back or bent at the boundary 18 so as to cover the main body 14, is vulcanized and bonded to the main body 14, to seal the main body 14.SELECTED DRAWING: Figure 9

Description

  The present invention relates to a bag body for an undulating gate used for raising and lowering an undulating gate and a method for manufacturing the same.

  Conventionally, for example, a bag body for an undulating gate used in the undulating gate described in Patent Document 1 is formed by folding a bag forming sheet formed by overlapping a plurality of rubberized cloths in an envelope fold. It was molded into a bag shape and vulcanized using a vulcanizing can.

JP 2005-76277 A

  However, since the conventional bag body for undulating gates is an envelope fold, the bag forming sheet is not continuous at the four corners in plan view, and has a structure in which minute holes are generated. Therefore, in the undulating gate bag body that is required to be airtight in order to accommodate a high-pressure fluid, it is inevitable that a plurality of sealing members such as a cover and a rubber sheet are provided at four corners in order to ensure airtightness. .

  Accordingly, the undulating gate bag body after molding and before vulcanization is not a smooth shape in a side view due to a plurality of seal members, and cannot be easily smoothed, and press vulcanization. It was difficult to vulcanize with a machine. Further, even when the four corners of the undulating gate bag body are sealed by a plurality of sealing members, there is a concern about the airtightness of the undulating gate bag body that is on standby for a long period of time.

  The present invention has been made in view of the above-described problems, and can be vulcanized not only by a vulcanizing can but also by a press vulcanizer, and accommodated inside without providing a sealing member such as a cover. It is an object of the present invention to provide a relief gate bag and a method of manufacturing the same, in which there is no possibility that the fluid to be leaked over a long period of time.

  The undulating gate bag according to the present invention is formed into a bag shape using a bag forming sheet, and a main body portion that forms a space for accommodating a fluid inside the bag forming sheet facing the bag body, A undulating gate bag comprising: a flap portion extending outward from the main body portion; and a boundary formed at a boundary between the main body portion and the flap portion. It is formed of rubberized cloth or formed by overlapping multiple rubberized cloths, and the point on the bag forming sheet that should be the start point or end point of the boundary is outside the bag forming sheet. The main body part is formed by folding and / or curving the bag forming sheet, and the flap part is folded and / or curved at the boundary so as to cover the main body part. The body was sealed by vulcanization. And features.

  According to the undulating gate bag according to the present invention, the point on the bag forming sheet to be the boundary start point or end point is separated from the outer peripheral edge of the bag forming sheet, and the main body portion is the bag. Since the body-forming sheet is folded and / or bent, the flap part is folded and / or bent at the boundary so as to cover the main body part and vulcanized and bonded to the main body part to seal the main body part. , Since the bag forming sheet is structurally continuous and has no holes at the start point or end point of the four corners in plan view after forming the undulating gate bag, a sealing member such as a cover is provided. Even if it does not exist, there is no possibility that the fluid stored in the undulating gate bag will leak over a long period of time. Further, according to the undulating gate bag according to the present invention, since there is no need to provide a seal member, the step in the side view of the undulating gate bag after molding is easily smoothed by using thickened rubber. Vulcanization can be performed not only with a vulcanization can but also with a press vulcanizer.

  In the undulating gate bag according to the present invention, the main body portion is provided with a metal opening member that serves as an inlet / outlet of a fluid flowing into the main body portion and is coated with a vulcanizing adhesive. The opening member and the undulating gate bag body may be integrated by simultaneously vulcanizing the bag body.

According to the undulation gate bag according to the present invention, the metal opening member can be bolted to the fluid inflow / outflow pipe outside the undulation gate bag, and the undulation gate bag and fluid outflow. It becomes possible to be connected to the inlet pipe integrally.
Therefore, even when a high-pressure fluid flows into or out of the undulating gate bag through the inflow / outflow pipe, there is no possibility that the fluid leaks from the undulating gate bag.

  The undulating gate bag according to the present invention is provided with a sheet-like release agent bonding pulling cloth provided on the inner surface of the main body portion of the main surface of the bag-forming sheet. A sheet-like release agent may be provided on the pulling cloth.

According to the undulating gate bag according to the present invention, the sheet release agent is arranged so as to be inscribed on the inner surface of the body portion of the undulated gate bag after molding through the sheet release agent bonding pulling cloth. Will be.
Therefore, since the upper bag forming sheet and the lower bag forming sheet constituting the inner surface of the molded main body portion sandwich the sheet release agent, the upper bag forming sheet and There is no possibility of vulcanization bonding with the lower bag forming sheet during vulcanization.

The method for manufacturing a bag body for an undulating gate according to the present invention is for forming a bag body formed by overlapping a plurality of rubberized cloths. A step of preparing a sheet, and a step of forming a body portion that forms a space for accommodating a fluid inside the bag body by facing the bag body sheet by folding and / or curving the bag body forming sheet. And the flap portion extending outward from the boundary with the main body portion, the point on the bag forming sheet that should be the starting point or the end point of the boundary is separated from the outer peripheral edge of the bag forming sheet Folding and / or curving so as to cover the main body part at the boundary, and stacking the flap part on the main body part, formed into a bag shape using a bag forming sheet, and provided with a main body part and a flap part The process of vulcanizing the relief gate bag ,
And the main body is sealed.

  According to the manufacturing method of the bag body for undulation gates according to the present invention, the space for accommodating the fluid inside the bag forming sheet by facing the bag forming sheet by folding and / or curving the bag forming sheet. The point on the sheet for forming the bag body that should be the start point or the end point of the boundary is the flap part extending outward from the boundary with the body part. Folded and / or curved so as to cover the main body part at a boundary that is separated from the outer peripheral edge, and the flap part is overlaid on the main body part, and is formed into a bag shape using a bag forming sheet. And the step of vulcanizing the bag body for the undulating gate provided with the main body part and the flap part, so that the start points or the end points of the four corners in the plan view after forming the bag body for the undulating gate are structurally bags. The body molding sheets are continuous Since the hole is not open, there is no possibility of fluid without providing a sealing member such as weather strip is housed in the undulations gate bag leaks for a long period of time.

  The method for manufacturing the bag body for undulating gates according to the present invention includes the step of providing a sheet-like release agent bonding draw cloth on the inner surface of the bag body for undulating gates of the main surface of the bag forming sheet; A step of providing a sheet-like release agent on the sheet-like release agent bonding fabric, and a metal opening member coated with a vulcanized adhesive serving as an inlet / outlet for the fluid flowing into the main body portion of the main body portion And a process.

According to the method for manufacturing a bag body for undulating gates according to the present invention, the step of providing a sheet-like release agent bonding pulling cloth on the inner surface of the bag body for undulating gates of the main surface of the bag forming sheet. And a step of providing a sheet-like release agent on the sheet-like release agent bonding draw cloth, so that the sheet-like release agent is formed into a sheet-like shape on the inner surface of the body portion of the undulating gate bag after molding. It will be arrange | positioned so that it may inscribe through the release agent adhesion | attachment pull cloth. Therefore, since the upper bag forming sheet and the lower bag forming sheet constituting the inner surface of the molded main body portion sandwich the sheet release agent, the upper bag forming sheet and There is no possibility of vulcanization bonding with the lower bag forming sheet during vulcanization.
In addition, according to the method for manufacturing the undulating gate bag according to the present invention, the step of providing a metal opening member to which the vulcanized adhesive is applied and which serves as an outflow inlet of the fluid flowing into the main body portion into the main body portion; Therefore, the vulcanizing adhesive and the undulating gate bag body are vulcanized at the same time, so that the opening member and the undulating gate bag body are integrated, and the metal opening member is the undulating gate bag body. Therefore, the undulating gate bag and the fluid inflow / outflow pipe can be integrally connected to each other. Therefore, even when a high-pressure fluid flows into or out of the undulating gate bag through the inflow / outflow pipe, there is no possibility that the fluid leaks from the undulating gate bag.

  The method for manufacturing a bag body for an undulating gate according to the present invention includes a undulating gate extending in a direction perpendicular to or intersecting with the pressing direction by the press vulcanizer when the bag body for the undulating gate is vulcanized using a press vulcanizer. A mold having a frame for preventing deformation of the bag body may be used, and the undulating gate bag body may be vulcanized.

  According to the method for manufacturing a bag body for an undulating gate according to the present invention, deformation of the bag body for the undulating gate can be prevented when the bag body for the undulating gate is vulcanized by a press vulcanizer.

  In the manufacturing method of the undulating gate bag according to the present invention, the main body has a first main body surface, a second main body surface connected to the first main body surface, and a second main body surface opposite to the first main body surface. A third main body surface to be connected; a fourth main body surface connected to the third main body surface opposite to the second main body surface; a fifth main body surface connected to the fourth main body surface opposite to the third main body surface; The flap portion includes a first main body surface, a second main body surface, and a pair of first flap surfaces that are connected so as to sandwich a portion where the third main body surfaces are not connected to each other. And a pair of second flap surfaces that are connected so as to sandwich a portion where the main body surface and the fifth main body surface are not connected to each other, and the step of forming the main body portion includes changing the first main body surface to the second main body surface. The process of folding and the process of folding the second main body surface on which the first flap surface and the first main body surface are placed on the third main body surface And folding the third main body surface on which the first flap surface, the first main body surface and the second main body surface are placed onto the fourth main body surface, the fifth main body surface as the first flap surface, the second flap surface, Folding the first main body surface, the second main body surface, and the fourth main body surface on which the third main body surface is placed, and the step of overlapping the flap portion on the main body portion includes: Folding the second flap surface onto the second main body surface, and folding the second flap surface onto the first main flap surface, the first main body surface, the second main body surface, and the fourth main body surface. And may be included.

According to the method for manufacturing the undulating gate bag according to the present invention, two or more layers of bag forming sheets constituting the main body portion and the flap portion are laminated as viewed from the space for accommodating the fluid. Thus, the strength of the main body and the strength of the flap are improved.
Therefore, there is no possibility that the undulating gate bag leaks even when a high-pressure fluid is accommodated therein.

  Therefore, according to the bag body for undulation gates and the manufacturing method thereof according to the present invention, vulcanization can be performed not only by a vulcanization can but also by a press vulcanizer, and the interior can be provided without providing a sealing member such as a cover. There is no possibility that the fluid stored in the tank will leak over a long period of time.

It is sectional drawing of the relief gate which concerns on this invention, (A) is sectional drawing of a standing state, (B) is sectional drawing of a lying state. It is an expanded view of the sheet | seat for bag body formation in 1st Embodiment based on this invention, (A) is a figure in planar view, (B) is a figure in side view. It is a figure which shows the state by which the other member is mounted in the sheet | seat for bag body formation in 1st Embodiment based on this invention, (A) is a figure in planar view, (B) is a side view FIG. FIGS. 4A and 4B are views of a first stage in the process of folding the bag forming sheet in the state of FIG. 3, (A) is a diagram in plan view, and (B) is a diagram in side view. (First folding) In FIG. 3, some of the other members placed on the bag forming sheet are omitted. It is a figure of the 2nd step of the process in which the sheet | seat for bag body shaping | molding of the state of FIG. 3 is folded, (A) is a figure in planar view, (B) is a figure in side view. (Second fold) It is a figure of the 3rd step of the process in which the sheet | seat for bag body shaping | molding of the state of FIG. 3 is folded, (A) is a figure in planar view, (B) is a figure in side view. (Third fold) It is a figure of the 4th step of the process in which the sheet | seat for bag body shaping | molding of the state of FIG. 3 is folded, (A) is a figure in planar view, (B) is a figure in side view. (Fourth fold) FIGS. 5A and 5B are views of a fifth stage in the process of folding the bag forming sheet in the state of FIG. 3, in which FIG. 3A is a plan view and FIG. (Fifth fold) It is a figure of the bag body for undulation gates in 1st Embodiment which concerns on this invention, and is a figure of the 6th step of the process in which the sheet | seat for bag body shaping | molding of the state of FIG. ) Is a diagram in a plan view, and (B) is a diagram in a side view. (6th fold) It is a top view of the bag body for undulation gates in 1st Embodiment provided with the opening member and opening member reinforcement material which concern on this invention. It is an enlarged view of the opening member which concerns on this invention, and an opening member reinforcement, (A) is a plane enlarged view of the periphery of the opening member of FIG. 10, (B) is a VV end view of FIG. is there. FIG. 10 is an end view in the left-right direction in FIG. 9, (A) is an XX end view, and (B) is a YY end view. FIG. 10 is an end view in FIG. 9, and (A) is a ZZ end view. (B) is a WW end view in FIG. 9. It is a figure which shows the state by which the bag body for undulation gates in 1st Embodiment concerning this invention was pinched | interposed into the fixed belt, (A) is a top view, (B) is U- of (A). It is a U end elevation. In this figure, the undulating gate bag and the fixing belt are shown upside down so that the fluid flows in and out from the bottom side of the water channel so that the opening member is on the lower side. It is an expanded sectional view which shows the connection state of the opening member of the bag body for undulations in the 1st Embodiment concerning this invention, and an inflow / outflow pipe | tube. It is a figure which shows the process in which the bag body for undulation gates in 1st Embodiment which concerns on this invention is manufactured. It is an expanded view of the sheet | seat for bag body shaping | molding in 2nd Embodiment based on this invention, (A) is a figure in planar view, (B) is a figure in side view. It is a figure which shows the state by which the other member is mounted in the sheet | seat for bag body formation in 2nd Embodiment based on this invention, (A) is a figure in planar view, (B) is a side view FIG. It is a figure of the 1st step of the process in which the sheet | seat for bag body shaping | molding of the state of FIG. 18 is return | folded, (A) is a figure in planar view, (B) is a figure in side view. (First folding) In FIG. 18, some of the other members placed on the bag forming sheet are omitted. It is a figure of the 2nd step of the process in which the sheet | seat for bag body shaping | molding of the state of FIG. 18 is folded, (A) is a figure in planar view, (B) is a figure in side view. (Second fold) FIG. 19 is a plan view of the undulating gate bag body according to the second embodiment of the present invention and a third stage diagram of the process of folding the bag forming sheet in the state of FIG. 18; (A) is a diagram in plan view, (B) is a diagram in side view, and (C) is a cross-sectional view along WA-WA in (A). (Third fold) It is a figure which shows the process in which the bag body for undulation gates in 2nd Embodiment which concerns on this invention is manufactured. It is a perspective view which shows the use condition of the metal mold | die which has a frame which concerns on this invention. It is sectional drawing which shows the state by which the sheet | seat for bag body shaping | molding which concerns on this invention was overlapped and formed, and was further smooth | blunted with the thickened rubber | gum.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. The following embodiment is an example embodying the present invention, and does not limit the technical scope of the present invention.

The directions used in the following description are defined as follows. The case where the undulation gate is viewed from the upstream side is the front of the undulation gate, and the case where the undulation gate is viewed from the downstream is the back of the undulation gate. When the undulating gate is viewed from the upstream side, the left is the left and the right is the right. Further, in the bag forming sheet before the undulating gate bag is formed, the fifth main body surface side is the front side, the first main body surface side is the far side or the rear side, and the fifth main body surface side is viewed from the fifth main body surface side. Left is left and right is right. Further, the upper side in the vertical direction when viewed from the accommodation space S is the upper side, and the lower side in the vertical direction when viewed from the accommodation space S is the lower side. The accommodation space portion S side of the undulating gate bag body is defined as an inner surface side, and the outer surface side of the undulation gate bag body viewed from the accommodation space portion S is defined as an outer surface side.
Moreover, the numerical value or dimension shown in the following description is a numerical value or dimension as an example, and is not limited to this numerical value or dimension.

  As shown in FIG. 1, the undulation gate 1 is provided on the bottom rb of the water channel, and by standing the door body 2 at a predetermined inclination angle, the flow of water flowing in the water channel is controlled and the flow rate is kept constant. It is a movable weir that allows the water flow to flow smoothly from the upstream to the downstream by holding down and lying down. The hoisting gate 1 includes a hoisting gate bag body 10 (10A), a door body 2, a door body fastener 3, a fixing unit 4, a lower door contact 5, a side door contact 6, and an opening meter 7.

  The door body 2 is made of steel and is a member having strength and rigidity necessary as a weir for damming the water flow in the water channel to a certain extent. The door body 2 is attached to the bottom rb of the water channel so as to be rotatable between a standing position and a lying position. The door body 2 dams the water flow by standing up with a predetermined inclination angle, for example, 60 degrees with respect to the bottom rb of the water channel. The door body 2 is composed of a skin plate 2a and reinforcing ribs 2b. The skin plate 2a is a main body of the door body 2 and is a member extending in the left-right direction of the water channel because the door body 2 resists water flow. The reinforcing rib 2b is a plate-like member attached to the front side of the skin plate 2a so as to extend from the lower end to the upper end of the skin plate 2a in order to improve the strength and rigidity of the skin plate 2a. A side portion (not shown) of the door body 2 is slidably brought into contact with the side door stopper 6 via a seal member (not shown), so that the door body 2 is raised after the door body 2 is erected or in the middle of erection. Keep water tight on the sides of the.

  The door body fastener 3 is connected so that both ends thereof are connected to the upper end of the door body 2 and the bottom portion rb of the water channel, and when the door body 2 stands up to a predetermined angle, for example, 60 degrees, the door body fastener 3 is restricted from standing up any more. It is a member for doing. The door body fastener 3 is a member obtained by forming a rubberized cloth reinforced with, for example, nylon fiber into a belt shape.

  The fixing unit 4 is a member made of rubberized cloth for connecting the lower door unit 5 and the door body 2 to moor the door body 2 and the lower door unit 5 and maintaining water tightness of the lower part of the door body 2. is there.

  The lower door stop 5 is a structure provided at the bottom rb of the water channel, and when the door body 2 is fallen down, the door body 2 and the bottom rb of the water channel are flush with each other substantially in contact with the lower end of the door body 2. When the door body 2 is erected, the door body 2 is connected to the lower end of the door body 2 via the fixing unit 4 to keep the water tightness of the lower part of the door body 2.

  The side door contacts 6 are provided in parallel with both sides of the width of the water channel so that the longitudinal direction thereof is the direction of water flow, and are substantially plate-shaped stainless steel plates. The side door stopper 6 maintains the watertightness of the door body 2 by making contact with a side portion (not shown) of the door body 2 via a seal member (not shown).

  The opening meter 7 is a measuring device that detects the inclination angle of the door body 2. The undulation gate 1 controls the flow rate of the water flow flowing in the water channel by the inclination angle of the door body 2, and the inclination angle of the door body 2 is determined according to the degree of expansion of the undulation gate bag body 10. The opening degree meter 7 is electrically connected to a control device (not shown) that controls the amount of fluid flowing into the undulating gate bag 10 and outputs information related to the inclination angle of the door 2 to the control device.

  The undulating gate bag 10 (10A) is formed into a bag shape using the bag forming sheet 12 (12A), and as shown in FIG. 9 (FIG. 21), the main body 14, the flap 16 and the boundary 18 are formed. With. The undulating gate bag 10 (10A) is formed so as to be able to accommodate the fluid in the accommodating space S formed inside the main body 14. The raising / lowering bag body 10 (10A) is a member for supporting the door body 2 from the back side in order to raise or fall the door body 2. The undulating gate bag body 10 (10 </ b> A) expands or contracts by flowing fluid into or out of the housing space S of the main body 14. The hoisting gate bag 10 (10A) is sandwiched between the fixing belts 200, and is attached to the lower door 5 using fixing bolts (not shown) on the back side of the door 2 via the fixing belt 200. Attached. The dimensions of the undulating gate bag 10 are, for example, a width in the left-right direction of 8400 mm, a length in the front-rear direction of 2250 mm, and a thickness in the up-down direction in the contracted state of 25.5 mm.

  Hereinafter, the embodiment of the undulating gate bag body 10 (10A) is divided into the undulating gate bag body 10 according to the first embodiment and the undulating gate bag body 10A according to the second embodiment. Separately described. In the first embodiment, the body surface 122 of the bag forming sheet 12 before forming the undulating gate bag 10 is formed of five surfaces, and the second embodiment is used for the undulating gate. The main body surface 122 of the bag forming sheet 12A before forming the bag 10A is composed of three surfaces. The side on which the first main body surface a is disposed as viewed from the accommodation space S of the undulating gate bags 10 and 10A is defined as a side, and the side on which the second main body surface b is disposed as viewed from the accommodation space S. b side.

<First Embodiment>
(Sheet for bag forming)
The bag forming sheet 12 is a single large sheet having a length of about 10 m on one side, and is a member for forming the undulating gate bag 10 by being folded or curved and stacked. is there. The bag forming sheet 12 is formed by one rubberized cloth, or is formed by overlapping a plurality of rubberized cloths. The rubberized cloth is a rectangular and sheet-like member formed by sandwiching both sides of a canvas made by plain weaving nylon fibers with an adhesive rubber, generally, for example, a rubber compounded with EPDM and natural rubber. The width of one rubberized cloth in the left-right direction is, for example, 2000 mm, and the thickness is, for example, 2 mm. The bag forming sheet 12 formed by overlapping a plurality of rubberized cloths has a joining part 12s and a non-joining part 12t as shown in a cross-sectional shape shown in FIG. The width in the left-right direction of the joint portion 12s is, for example, 200 mm, and the width in the left-right direction of the non-joint portion 12t is, for example, 1600 mm. The thickened rubber 121 is placed on the non-joining part 12t, and the joining part 12s and the non-joining part 12t are smoothed. The thickness of the bag forming sheet 12 after smoothing is, for example, 4 mm. The planar shape of the bag forming sheet 12 is, for example, a shape as shown in FIG.

As shown in FIG. 2, the bag forming sheet 12 includes a main body surface 122 that constitutes the main body portion 14 of the undulating gate bag body 10, and a flap surface 124 that constitutes the flap portion 16 of the undulating gate bag body 10. Have. The bag forming sheet 12 includes a first main body surface a, a second main body surface b, a third main body surface c, a fourth main body surface d, a fifth main body surface e, and a left side which is a flap surface 124. The first flap surface f1, the right first flap surface f2, the left second flap surface g1, and the right second flap surface g2.
The shapes of the first main body surface a, the second main body surface b, the third main body surface c, the fourth main body surface d, and the fifth main body surface e are rectangles extending in the left-right direction. The dimensions of the first main body surface a, the second main body surface b, the third main body surface c, the fourth main body surface d, and the fifth main body surface e are, for example, 8400 mm in width in the left-right direction, Are 2230 mm, 2230 mm, 2245 mm, 2250 mm and 725 mm, respectively. The first main body surface a, the second main body surface b, the third main body surface c, the fourth main body surface d, and the fifth main body surface e are sequentially connected from the far side to the near side. That is, the second main body surface b is connected to the first main body surface a on the front side, the third main body surface c is connected to the second main body surface b on the front side opposite to the first main body surface a, The fourth main body surface d is connected to the front side, which is the opposite side of the second main body surface b, to the third main body surface c, and the fifth main surface is connected to the front side, which is the opposite side of the third main body surface c. The main body surface e is connected.
Each of the left first flap surface f1 and the right first flap surface f2 has a rectangular shape extending in the front-rear direction and the same shape. The dimensions of the left first flap surface f1 and the right first flap surface f2 are, for example, a width in the left-right direction of 200 mm and a length in the front-rear direction of 2645 mm. Each shape of the second flap surface g1 on the left side and the second flap surface g2 on the right side is a rectangle and the same shape. As for the dimensions of the second flap surface g1 on the left side and the second flap surface g2 on the right side, for example, the width in the left-right direction is 400 mm and the length in the front-rear direction is 3075 mm. The first flap surface f1 on the left side is integrally connected to the left side of the first main body surface a from the middle of the front side of the left edge of the first main body surface a, and then connected to the left side of the second main body surface b. Then, it is integrally connected to the left side of the third main body surface c halfway beyond the left edge of the third main body surface c. Similarly, the first flap surface f2 on the right side is integrally connected to the right side of the first main body surface a from the middle on the near side of the right edge of the first main body surface a. Connect to the right side, and then integrally connect to the right side of the third main body surface c to the middle of the right side edge of the third main body surface c. The second flap surface g1 on the left side is integrally connected to the left side of the third main body surface c from the middle of the front side of the left end edge of the third main body surface c, and then the left side of the fourth main body surface d. And then integrally connected to the left side of the fifth main body surface e up to the middle of the left side edge of the fifth main body surface e. Similarly, the second flap surface g2 on the right side is integrally connected to the right side of the third body surface c from the middle of the front side of the right edge of the third body surface c. Connect to the right side, and then integrally connect to the right side of the fifth main body surface e up to the middle of the right side edge of the fifth main body surface e. That is, the first flap surface f1 on the left side and the first flap surface f2 on the right side are a part of the first body surface a, a portion of the second body surface b, and a portion of the third body surface c that are not connected to each other. It is a pair of flap surface 124 connected so that it may be pinched | interposed. The second flap surface g1 on the left side and the second flap surface g2 on the right side sandwich a part of the third main body surface c, a part of the fourth main body surface d, and a part of the fifth main body surface e that are not connected to each other. It is a pair of flap surfaces 124 connected in this way.

  The bag forming sheet 12 shown in FIG. 2 has, as its outer peripheral edge, an outer peripheral edge 12j1 extending in the left-right direction beyond the first main body surface a, and an outer peripheral edge 12j2 extending in the front-rear direction on the left side of the first main body surface a. And an outer peripheral edge 12j3 extending in the left-right direction beyond the left first flap surface f1 and away from the first main body surface a, and an outer side extending in the front-rear direction on the left side of the left first flap surface f1. A peripheral edge 12j4, an outer peripheral edge 12j5 extending in the left-right direction on the front side of the left first flap surface f1 and away from the third main body surface c, and an outer side extending in the front-rear direction on the left side of the third main body surface a A peripheral edge 12j6, an outer peripheral edge 12j7 extending in the left-right direction beyond the second flap surface g1 on the left side and extending away from the third main body surface c, and a left-right direction on the left side of the second flap surface g1 on the left side Outer peripheral edge 12j An outer peripheral edge 12j9 extending in the left-right direction on the front side of the second flap surface g1 on the left side and extending leftward from the fifth main body surface e, and an outer peripheral edge 12j10 extending in the front-rear direction on the left side of the fifth main body surface e. An outer peripheral edge 12j11 extending in the left-right direction on the front side of the fifth main body surface e, an outer peripheral edge 12j12 extending in the front-rear direction on the right side of the fifth main body surface e, and a left-right direction on the front side of the right second flap surface g2. The outer peripheral edge 12j13 extending in the direction away from the fifth main body surface e to the right, the outer peripheral edge 12j14 extending in the front-rear direction on the right side of the second flap surface g2 on the right side, and the other side of the second flap surface g2 on the right side. An outer peripheral edge 12j15 extending in the left-right direction and away from the third main body surface c to the right, an outer peripheral edge 12j16 extending in the front-rear direction on the right side of the third main body surface c, and the front side of the right first flap surface f2. Left and right The outer peripheral edge 12j17 extending in the direction away from the third main body surface c, the outer peripheral edge 12j18 extending in the front-rear direction on the right side of the right first flap surface f2, and the right side of the right side of the first flap surface f2 And an outer peripheral edge 12j19 extending in the direction away from the first main body surface a to the right, and an outer peripheral edge 12j20 extending in the front-rear direction on the right side of the first main body surface a.

  The bag forming sheet 12 is folded or curved to be formed into a bag shape. However, by folding or curving, the folding line m1, the folding line m2, the folding line m3, the folding line m4, the folding line n1, the folding line n2, and the folding line n3. And a broken line n4 are formed. Details will be described later.

(Main body)
As shown in FIGS. 9 and 10, the main body portion 14 is a portion that becomes a main body of the undulating gate bag body 10 that accommodates fluid when the undulating gate bag body 10 expands. That is, the main body portion 14 forms the accommodating space portion S that is a space for accommodating the fluid inside the facing body surface 122 of the bag forming sheet 12. The main body 14 is generally rectangular in plan view when the undulating gate bag 10 is contracted. The main body portion 14 of the undulating gate bag body 10 of FIGS. 9 and 12 has two layers of a first main body surface a and a third main body surface c on the upper side of the storage space S at the XX end surface, Y On the −Y end surface, three layers of the first main body surface a, the third main body surface c, and the fifth main body surface e are laminated on the upper side, and two layers of the second main body surface b and the fourth main body surface d are laminated on the lower side. Yes. That is, the main body portion 14 of the undulating gate bag body 10 of FIG. 9 includes the first main body surface a, the second main body surface b, the third main body surface c, the fourth main body surface d, and the fifth main body surface e. ing. Since the main body portion 14 of the bag body 10 for undulating gates in FIG. 9 is laminated in two layers on the lower side and two layers or three layers on the upper side when viewed from the accommodation space S, it is used for the undulating gate in FIG. The strength is improved as compared with the main body portion 14 of the bag body 10, and there is no possibility that the fluid leaks even when a high-pressure fluid is accommodated in the internal accommodation space S.
The detailed structure of the main body 14 will be described later.

(Flap part)
As shown in FIGS. 9 and 10, the flap portion 16 extends outward from the main body portion 14, is folded and / or curved at a boundary 18 so as to cover the main body portion 14, and is vulcanized and bonded to the main body portion 14. Thus, the main body 14 is sealed.
The flap portion 16 of the hoisting gate bag 10 of FIGS. 9 and 10 includes a left first flap surface f1, a right first flap surface f2, and a left second flap surface g1, which are the flap surfaces 124 of FIG. The second flap surface g2 on the right side extends continuously from the main body 14 with a boundary 18 therebetween, and as shown in FIG. 12A, the first flap surface f1 on the left side and the right side flap surface g1 The first flap surface f2 extends from the lower second body surface b side and covers the upper first body surface a side, and the left second flap surface g1 and the right second flap surface g2 Is formed by covering from the fourth main body surface d located on the lower side to the third main body surface c located on the upper side.
Since the flap portion 16 of the undulating gate bag body 10 in FIG. 9 is laminated in two layers as shown in FIG. 12 when viewed from the accommodation space S, the undulating gate bag body 10 in FIG. The strength is improved as compared with the flap portion 16, and there is no possibility that the fluid leaks even when a high-pressure fluid is accommodated in the internal accommodating space portion S.
The detailed structure of the flap part 16 will be described later.

(boundary)
As shown in FIG. 9 and FIG. 10, the boundary 18 is a boundary formed at the boundary between the main body portion 14 and the flap portion 16, and when the flap portion 16 is folded and / or curved to the main body portion 14. This is a standard line segment. The boundary 18 is an edge on both sides in the left-right direction of the bag 10 for undulating gates after molding.
As shown in FIG. 9, the boundary 18 includes a start point 18s located on the near side and an end point 18e located on the far side.
As described later, points that should be the starting point 18s on the bag forming sheet 12 of FIG. 2 before being formed into the undulating gate bag 10 of FIG. 9 are the intersection X12, the intersection X22, the intersection X34, and the intersection X44. It is. The points to be the end point 18e on the bag forming sheet 12 of FIG. 2 before being formed into the undulating gate bag 10 of FIG. 9 are the intersection point X11, the intersection point X21, the intersection point X33, and the intersection point X43. As shown in FIG. 2, the intersection point X11, the intersection point X12, the intersection point X21, the intersection point X22, the intersection point X33, the intersection point X34, the intersection point X43, and the intersection point X44 are from the outer peripheral edge 12jN (N = 1 to 20) of the bag forming sheet 12. Is also located on the inner side and is separated from the outer peripheral edge 12jN (N = 1 to 20) of the bag forming sheet 12. That is, the start point 18s and the end point 18e are continuously formed by the bag forming sheet 12, and have a structure in which no hole is opened. As a result, the undulating gate bag body 10 can eliminate the cause of fluid leakage over a long period of time without providing sealing members such as eyelids at the start point 18s and the end point 18e corresponding to the four corners.

  As shown in FIGS. 2, 3, and 4, the boundary between the first main body surface a and the second main body surface b is formed by folding or curving the bag forming sheet 12, and the first main body surface a and the second main body surface b. 2 It becomes a part of the broken line m1 when facing the main body surface b. That is, a fold line m1 formed by folding or bending the first main body surface a to the second main body surface b is a boundary between the first main body surface a and the second main body surface b. Here, as shown in FIG. 3, when the first body surface a is folded or curved toward the second body surface b, it is not folded or curved on the extension line of the outer peripheral edge 12j3 and the outer peripheral edge 12j19. It folds or curves so that a fold line is formed slightly in front of the extended lines of the outer peripheral edge 12j3 and the outer peripheral edge 12j19. Further, the folding line m1 is an extension line to the first flap surface f1 on the left side of the boundary between the first main body surface a and the second main body surface b, and the outer peripheral edge 12j3 and the outer peripheral edge of the left first flap surface f1 And 12j5. Similarly, the fold line m1 is an extension line to the first flap surface f2 on the right side of the boundary between the first main body surface a and the second main body surface b, and is outside the outer peripheral edge 12j19 of the right first flap surface f2. It is formed between the periphery 12j17.

  As shown in FIGS. 2, 5, and 6, the boundary between the second main body surface b and the third main body surface c includes a second main body surface b facing the first main body surface a, and the bag forming sheet 12. Is folded or bent so that the first main body surface a is brought into contact with the third main body surface c so that the second main body surface b faces the first main body surface a and the third main body surface c. It becomes a part of m2. That is, a fold line m2 formed by folding or bending the second main body surface b to the third main body surface c is a boundary between the second main body surface b and the third main body surface c. Here, as shown in FIG. 5, when the second main body surface b facing the first main body surface a is folded or curved toward the third main body surface c, on the extension lines of the outer peripheral edge 12j5 and the outer peripheral edge 12j17. Instead of being folded or curved, it is folded or curved so that a folding line is formed slightly beyond the extended lines of the outer peripheral edge 12j5 and the outer peripheral edge 12j17. Further, the fold line m2 is an extension line to the first flap surface f1 on the left side of the boundary between the second main body surface b and the third main body surface c, and the outer peripheral edge 12j3 and the outer peripheral edge of the left first flap surface f1 And 12j5. Similarly, the fold line m2 is on an extension line to the first flap surface f2 on the right side of the boundary between the second main body surface b and the third main body surface c, and is outside the outer peripheral edge 12j19 of the right first flap surface f2. It is formed between the periphery 12j17.

  As shown in FIGS. 2, 6, and 7, the boundary between the third main body surface c and the fourth main body surface d includes a first main body surface a and a third main body surface c that face the second main body surface b. The bag forming sheet 12 is folded or bent so that the second main body surface b is brought into contact with the fourth main body surface d, and the first main body surface a, the third main body surface c, the second main body surface b, It becomes a part of the broken line m3 when the fourth main body surface d is opposed. That is, a fold line m3 formed by folding or bending the third main body surface c to the fourth main body surface d is a boundary between the third main body surface c and the fourth main body surface d. Here, as shown in FIG. 6, when the first main body surface a and the third main body surface c facing the second main body surface b are folded or curved toward the fourth main body surface d, the outer peripheral edge 12j7 and the outer Instead of being folded or curved on the extended line of the peripheral edge 12j15, the folded or curved line is formed so that the folded line is formed slightly in front of the extended lines of the outer peripheral edge 12j7 and the outer peripheral edge 12j15. Further, the fold line m3 is an extension line to the second flap surface g1 on the left side of the boundary between the third main body surface c and the fourth main body surface d, and the outer peripheral edge 12j7 and the outer peripheral edge of the left second flap surface g1 12j9. Similarly, the fold line m3 is on an extension line to the second flap surface g2 on the right side of the boundary between the third main body surface c and the fourth main body surface d, and is outside the outer peripheral edge 12j15 of the second flap surface g2 on the right side. It is formed between the periphery 12j13.

  As shown in FIGS. 2, 8 and 9, the boundary between the fourth main body surface d and the fifth main body surface e is the second main body surface b and the first main body surface a and the fourth main body surface d facing each other. The bag forming sheet 12 having the three main body surfaces c is folded or bent so that the third main body surface c contacts the fifth main body surface e, and the second main body surface b and the fourth main body surface d It becomes a part of the fold line m4 when the first main body surface a, the third main body surface c, and the fifth main body surface e are opposed to each other. That is, a fold line m4 formed by folding or bending the fourth main body surface d to the fifth main body surface e is a boundary between the fourth main body surface d and the fifth main body surface e. Here, as shown in FIG. 8, when the first main body surface a and the third main body surface c facing the second main body surface b and the fourth main body surface d are folded or curved toward the fifth main body surface e. Instead of being folded or curved on the extended line of the outer peripheral edge 12j9 and the outer peripheral edge 12j13, the folded line is bent or curved so that the folded line is formed slightly beyond the extended line of the outer peripheral edge 12j9 and the outer peripheral edge 12j13. Further, the fold line m4 is an extension line to the second flap surface g1 on the left side of the boundary between the fourth main body surface d and the fifth main body surface e, and the outer peripheral edge 12j7 and the outer peripheral edge of the left second flap surface g1 12j9. Similarly, the fold line m4 is on an extension line to the second flap surface g2 on the right side of the boundary between the fourth main body surface d and the fifth main body surface e, and is outside the outer peripheral edge 12j15 of the second flap surface g2 on the right side. It is formed between the periphery 12j13.

  As shown in FIG. 2, the first flap surface f1 on the left side is separated from the other side by the fold line m1 and the fold line m2, so that the first flap surface component f1a, the first flap surface component f1b, and the first flap surface component It is divided into f1c. Similarly, the first flap surface f2 on the right side is divided into the first flap surface configuration portion f2a, the first flap surface configuration portion f2b, and the first flap surface configuration portion f2c from the other side by the fold line m1 and the fold line m2. Is done. Further, the second flap surface g1 on the left side is divided into the second flap surface constituting portion g1c, the second flap surface constituting portion g1d, and the second flap surface constituting portion g1e from the other side by the fold line m3 and the fold line m4. The Similarly, the second flap surface g2 on the right side is divided into the second flap surface constituting portion g2c, the second flap surface constituting portion g2d, and the second flap surface constituting portion g2e from the other side by the fold line m3 and the fold line m4. Is done.

  As shown in FIGS. 2, 4, and 5, the boundary between the left first flap surface f1, the first main body surface a, the second main body surface b, and the third main body surface c is a fold line n1. And the broken line n1 which is the said boundary comprises a part of the boundary 18 of the bag body 10 for undulation gates. As shown in FIGS. 4 and 5, the fold line n <b> 1 is obtained by folding or curving the left first flap surface f <b> 1 of the bag forming sheet 12 having the second main body surface b facing the first main body surface a. The first flap surface constituting portion f1a and the first flap surface constituting portion f1b of the left first flap surface f1 are brought into contact with each other so as to overlap the first body surface a, and at the same time, the first flap surface constituting portion f1c is brought into contact with the third body. It is a fold line formed when the left and right unconnected portions of the first main body surface a and the second main body surface b that are in contact with each other so as to overlap the surface c are sealed from the left side.

  As shown in FIGS. 2, 4 and 5, the boundary between the first flap surface f2 on the right side, the first main body surface a, the second main body surface b, and the third main body surface c is a fold line n2. And the broken line n2 which is the said boundary comprises a part of the boundary 18 of the bag body 10 for undulation gates. As shown in FIGS. 4 and 5, the fold line n <b> 2 is obtained by folding or curving the first flap surface f <b> 2 on the right side of the bag forming sheet 12 having the second main body surface b facing the first main body surface a. The first flap surface constituting portion f2a and the first flap surface constituting portion f2b of the right first flap surface f2 are brought into contact with each other so as to overlap the first body surface a, and at the same time, the first flap surface constituting portion f2c is brought into contact with the third body. It is a fold line formed when the left and right unconnected portions of the first body surface a and the second body surface b facing each other so as to overlap the surface c are sealed from the right side.

  As shown in FIGS. 2, 7, and 8, the boundary between the second flap surface g1 on the left side, the third main body surface c, the fourth main body surface d, and the fifth main body surface e is a fold line n3. And the broken line n3 which is the said boundary comprises a part of the boundary 18 of the bag body 10 for undulation gates. As shown in FIGS. 7 and 8, the fold line n3 is formed on the left side of the bag forming sheet 12 having the first main body surface a and the third main body surface c facing the second main body surface b and the fourth main body surface d. The second flap surface g1 is folded or curved so that the second flap surface constituting portion g1c and the second flap surface constituting portion g1d of the left second flap surface g1 are brought into contact with each other so as to overlap the third main body surface c. The second flap surface constituting part g1e is brought into contact with the fifth main body surface e so as to seal the left and right unconnected portions of the overlapping first main body surface a and third main body surface c from the left side. It is a fold line formed when sealing is further strengthened from above the first flap surface f1 on the left side.

  As shown in FIGS. 2, 7, and 8, the boundary between the second flap surface g2 on the right side, the third main body surface c, the fourth main body surface d, and the fifth main body surface e is a fold line n4. And the broken line n4 which is the said boundary comprises a part of the boundary 18 of the bag body 10 for undulation gates. As shown in FIGS. 7 and 8, the fold line n4 is formed on the right side of the bag forming sheet 12 having the first main body surface a and the third main body surface c facing the second main body surface b and the fourth main body surface d. The second flap surface g2 is folded or curved so that the second flap surface constituting portion g2c and the second flap surface constituting portion g2d of the right second flap surface g2 are brought into contact with the third main body surface c, and at the same time The second flap surface constituting part g2e is brought into contact with the fifth main body surface e so as to seal the left and right unconnected portions of the overlapping first main body surface a and third main body surface c from the right side. It is a fold line formed when sealing is further strengthened from above the first flap surface f2 on the right side.

  As shown in FIG. 2, the folding line n1 and the folding line m1 of the bag forming sheet 12 form an intersection X11. The broken line n1 and the broken line m2 form an intersection X12. The broken line n2 and the broken line m1 form an intersection point X21. The broken line n2 and the broken line m2 form an intersection point X22. The fold line n3 and the fold line m3 form an intersection point X33. The broken line n3 and the broken line m4 form an intersection point X34. The broken line n4 and the broken line m3 form an intersection point X43. The fold line n4 and the fold line m4 form an intersection point X44.

  The intersection point X11, the intersection point X12, the intersection point X21, the intersection point X22, the intersection point X33, the intersection point X34, the intersection point X43, and the intersection point X44 are in contact with any of the outer peripheral edges 12jN (N = 1 to 20) of the bag forming sheet 12. They are separated from each other and are located on the inner side of the outer peripheral edge 12jN (N = 1 to 20) of the bag forming sheet 12.

(Structure of a sheet for forming a bag formed by a plurality of rubberized cloths)
As shown in FIG. 24, a thickened rubber 121 is placed on the non-joining portion 12t of the bag forming sheet 12 formed by overlapping a plurality of rubberized cloths, and is not connected to the joining portion 12s. The joint 12t is smoothed. The thickened rubber 121 is a sheet-like rubber member in which ethylene / propylene / diene rubber (hereinafter referred to as “EPDM”) and natural rubber are blended. The thickness of the thickened rubber 121 is the same as that of the rubberized cloth, and is 2 mm, for example. With the thickened rubber, the bag forming sheet 12 formed by overlapping a plurality of rubberized cloths is easily smoothed. If the undulating gate bag body 10 having the above-described structure is formed using the bag forming sheet 12 smoothed by using the thickened rubber 121, there is no need to provide a sealing member. The level | step difference in the side view of the bag body for subsequent raising / lowering gates will be smooth | blunted easily. Therefore, the undulating gate bag body 10 can be vulcanized not only by a vulcanizing can but also by a press vulcanizer.

(Member provided on the inner surface side of the main body)
As shown in FIGS. 3 and 12, on the further inner surface side of the upper first main body surface a and the lower second main body surface b constituting the inner surface of the main body portion 14 of the undulating gate bag body 10, The inner layer rubber 126i, which is a rubber member, is provided so as to be inscribed. Alternatively, an adhesive rubber may be provided on the inner surface side so as to be inscribed. The inner layer rubber 126i is generally a rubber in which, for example, EPDM and natural rubber are blended. The inner layer rubber 126i is a first main body surface a of the bag forming sheet 12 in which the fluid stored in the main body portion 14, for example, air and condensed water, constitutes the inner surface of the main body portion 14 because the bag body 10 for undulation gates expands. And a member for preventing the durability of the second main body surface b from being lowered due to direct contact with the second body surface b, oxidation, and the like, and a rubber having weather resistance and ozone resistance. In addition to the protective function of nylon fiber, which is a reinforcing fiber for cloth, this rubber has airtightness. After the inner layer rubber 126i has been spread over the first main body surface a and the second main body surface b of the bag forming sheet 12, the bag forming sheet 12 is formed into the undulating gate bag 10. Thus, the inner layer rubber 126i is provided on the inner surface side of the main body 14 of the undulating gate bag 10.

  As shown in FIGS. 3 and 12, the main body 14 has a sheet-like release agent bonding pulling cloth 127 so as to be inscribed in an inner layer rubber 126i provided on the inner surface side of the main body 14 and on the b side. Is provided. The sheet-like release agent bonding pulling cloth 127 is a member for bonding a sheet-like release agent 128 described later to the inner surface side of the main body 14. The sheet-like release agent bonding draw cloth 127 is, for example, a canvas made by plain weaving of nylon fibers. After the sheet-like release agent bonding pulling cloth 127 is spread over the entire surface of the inner rubber 126i on the second main body surface b of the bag forming sheet 12, the bag forming sheet 12 is used as the undulating gate bag. The body 10 is molded. That is, the sheet-like release agent bonding pulling cloth 127 is provided on the portion of the main surface of the bag forming sheet 12 that is the inner surface of the main body 14.

As shown in FIGS. 3 and 12, the main body portion 14 is further formed in a sheet shape so as to be inscribed in the sheet-like release agent bonding pulling cloth 127 provided on the inner surface side and the b side of the main body portion 14. A release agent 128 is provided. The sheet release agent 128 is, for example, a sheet made of silicon rubber or a sheet made of butyl rubber. Silicon rubber and butyl rubber are one of the mold release agents for preventing adhesion between rubbers. After the sheet-like release agent 128 is spread and placed on the entire surface of the sheet-like release agent bonding draw cloth 127, the bag forming sheet 12 is formed into the undulating gate bag 10. In other words, after the sheet-like mold release agent 128 is provided on the sheet-like mold release agent bonding fabric 127, the bag forming sheet 12 is formed into the undulating gate bag 10.
That is, the sheet-like release agent 128 is disposed so as to be inscribed through the sheet-like release agent bonding draw cloth 127 on the inner surface side of the main body portion 14 of the undulating gate bag body 10 after molding. .
Accordingly, the bag forming sheet 12 forming the upper first main body surface a constituting the inner surface of the molded main body portion 14 and the bag forming sheet 12 forming the lower second main body surface b are sheets. Since the release agent 128 is sandwiched, rubber-stretched cloth (formed by sandwiching both sides of a canvas made by plain weaving of nylon fibers with adhesive rubber, typically a rubber blended with EPDM and natural rubber, for example. The upper sheet 12 for forming a bag body made of a rectangular and sheet-shaped member) and rubber-drawn cloth (both sides of a canvas made by plain weaving of nylon fibers) are bonded with rubber, generally, for example, EPDM. There is no possibility of vulcanization adhesion during vulcanization with the lower bag-forming sheet 12 formed by a rectangular and sheet-like member sandwiched between rubbers blended with natural rubber.

(Structure of undulating gate bag)
Hereinafter, the structure of the undulating gate bag 10 according to the first embodiment will be described in detail with reference to FIGS. 12 (A), 12 (B), 13 (A), and 13 (B). .
FIG. 12A is an XX end view of FIG. FIG. 12B is a YY end view of FIG. FIG. 13A is a ZZ end view of FIG. FIG. 13B is a WW end view of FIG. 9. In addition, the thick continuous line in FIG. 12 (A) etc. has shown the sheet | seat 12 for bag body shaping | molding. FIG. 12 (A) and the like schematically show the structure of the undulating gate bag body 10 after molding and before vulcanization, and the gap between the bag molding sheets 12 other than the accommodation space S is vulcanized. It is drawn to schematically show the structure before bonding, and is actually in a contact state. Moreover, in order to express that the accommodation space part S which is the space which accommodates the fluid exists in the center vicinity of the bag body 10 for undulation gates, such as FIG. 12 (A), the bag body 10 for undulation gates is moved up and down. Although shown in a slightly inflated state, the storage space S is actually crushed at the stage where the bag forming sheet 12 is folded and / or curved to form the undulating gate bag 10. The undulating gate bag 10 has a substantially smooth shape in a side view. In addition, a slight level difference due to the difference in the number of stacked sheets of the bag forming sheet 12 is actually smoothed using thickened rubber. Further, in FIG. 12A and the like, the first flap surfaces f1, f2 and the second flap surfaces g1, g2 are drawn in a vertically extending shape, but the undulating gate bag 10 is schematically illustrated. It is because it has been, has not actually extended.

As shown in FIG. 12 (A), the undulating gate bag body 10 after molding and before vulcanization in the vicinity of the center in the left-right direction is, in order from the lower side, the fourth main body surface d, the second main body surface b, and the inner layer rubber. 126i, the sheet-like release agent bonding pulling cloth 127, the sheet-like release agent 128, and the accommodation space S, the opening member reinforcing material 1421, the inner layer rubber 126i, the first main body surface a, and the third main body surface c. And are stacked. The fourth main body surface d and the second main body surface b located on the lower side, and the first main body surface a and the third main body surface c located on the upper side are formed so as to form the accommodation space S therein. Part of the portion 14 is configured. Further, the first flap surface constituting part f1b of the left first flap surface f1 extends from the left end edge of the second main body surface b, and is connected to the left end edge and the upper surface of the first main body surface a via the folding line n1. The left side of the main body 14 is sealed by contacting so as to cover. The second flap surface component g1d of the left second flap surface g1 extends from the left edge of the fourth body surface d and covers the left edge and the upper surface of the third body surface c via the fold line n3. The left side of the main body 14 is sealed from the left side of the left first flap surface f1. Similarly, the first flap surface constituting portion f2b of the first flap surface f2 on the right side extends from the right edge of the second body surface b, and the right edge and the upper surface of the first body surface a via the fold line n2. The right side of the main body portion 14 is sealed. The second flap surface constituting portion g2d of the right second flap surface g2 extends from the right edge of the fourth body surface d and covers the right edge and the upper surface of the third body surface c via the fold line n4. The right side of the main body 14 is sealed from the further right side of the right first flap surface f2. A first flap surface constituting part f1b and a second flap surface constituting part g1d located on the left side of the main body part 14, a first flap surface constituting part f2b and a second flap surface constituting part g2d located on the right side of the main body part 14, Constitutes a part of the flap portion 16.
As shown in FIG. 12 (A), when viewed from the accommodation space S, the undulating gate bag 10 is vulcanized to seal the body portion 14 and the flap portion 16 in the vertical and horizontal directions. The flap portion 16 is folded and / or curved at the boundary 18 so as to cover the main body portion 14 and is vulcanized and bonded to the main body portion 14 to seal the main body portion 14.

As shown in FIG. 12B, in the YY end view in which the vicinity of the front side edge of the undulating gate bag body 10 after molding and before vulcanization is cut in the left-right direction, in the front side and in the vicinity of the center in the left-right direction. After forming and before vulcanization, the undulating bag 10 is, in order from the bottom, the fourth main body surface d, the second main body surface b, the inner layer rubber 126i, the sheet-like release agent bonding draw cloth 127, and the sheet-like release. The inner layer rubber 126i, the first main body surface a, the third main body surface c, and the fifth main body surface e are laminated with the mold 128 and the accommodation space S therebetween. The main body portion 14 includes a fourth main body surface d and a second main body surface b located on the lower side, and a first main body surface a, a third main body surface c and a fifth main body surface e located on the upper side. The main body portion 14 is configured so as to form the accommodation space portion S.
Further, the first flap surface constituting part f1b of the left first flap surface f1 extends from the left end edge of the second main body surface b, and is connected to the left end edge and the upper surface of the first main body surface a via the folding line n1. The left side of the main body 14 is sealed by contacting so as to cover. The first flap surface constituting portion f1c of the left first flap surface f1 extends from the left end edge of the third main body surface c, and the lower surface of the third main body surface c and the first flap surface constituting portion via the folding line n1. It enters between the upper surface of f1b and contacts the lower surface of the third main body surface c and the upper surface of the first flap surface constituting portion f1b. The second flap surface component g1d of the left second flap surface g1 extends from the left edge of the fourth body surface d and covers the left edge and the upper surface of the third body surface c via the fold line n3. The left side of the main body 14 is sealed from the left side of the left first flap surface f1. The second flap surface constituting part g1e of the second flap surface g1 on the left side extends from the left edge of the fifth body surface e, and the lower surface of the fifth body surface e and the second flap surface constituting part via the fold line n3. It enters between the upper surface of g1d and contacts the lower surface of the fifth main body surface e and the upper surface of the second flap surface constituting portion g1d. Similarly, the first flap surface constituting portion f2b of the first flap surface f2 on the right side extends from the right edge of the second body surface b, and the right edge and the upper surface of the first body surface a via the fold line n2. The right side of the main body portion 14 is sealed. The first flap surface component f2c of the right first flap surface f2 extends from the right edge of the third main body surface c, and the lower surface of the third main body surface c and the first flap surface component via the folding line n2. It enters between the upper surface of f2b and contacts the lower surface of the third main body surface c and the upper surface of the first flap surface constituting part f2b. The second flap surface constituting portion g2d of the right second flap surface g2 extends from the right edge of the fourth body surface d and covers the right edge and the upper surface of the third body surface c via the fold line n4. The right side of the main body 14 is sealed from the further right side of the right first flap surface f2. The second flap surface constituting portion g2e of the right second flap surface g2 extends from the right end edge of the fifth main body surface e, and the lower surface of the fifth main body surface e and the second flap surface constituting portion via the folding line n4. It enters between the upper surface of g2d and contacts the lower surface of the fifth main body surface e and the upper surface of the second flap surface constituting portion g2d. The first flap surface constituting portion f1b, the first flap surface constituting portion f1c, the second flap surface constituting portion g1d, the second flap surface constituting portion g1e located on the left side of the main body portion 14, and the first flap surface constituting portion f1c located on the right side of the main body portion 14. The first flap surface constituting part f2b, the first flap surface constituting part f2c, the second flap surface constituting part g2d, and the second flap surface constituting part g2e constitute a part of the flap part 16.
As shown in FIG. 12 (B), when viewed from the accommodation space S, the undulating gate bag body 10 is sealed by the main body part 14 and the flap part 16 by being vulcanized. That is, the flap portion 16 is folded and / or curved at the boundary 18 so as to cover the main body portion 14 and is vulcanized and bonded to the main body portion 14 to seal the main body portion 14.

As shown in FIG. 13 (A), the undulating gate bag body 10 after molding and before vulcanization in the vicinity of the center in the front and rear direction on the right side is, in order from the lower side, the fourth main body surface d and the second main body surface b. The inner layer rubber 126i, the sheet release agent 128, the sheet release agent 128, and the accommodating space S are separated from each other by the inner layer rubber 126i, the first main body surface a, and the first flap surface f2 on the right side. The 1st flap surface structure part f2b, the 3rd main body surface c, and the 2nd flap surface structure part g2d of the 2nd flap surface g2 on the right side are laminated | stacked. The main body portion 14 is formed so that the upper first main body surface a is drawn to the lower second main body surface b via the folding line m1 on the rear side so as to draw a spiral clockwise when viewed from the right side of the bag body 10 for undulating gates. The lower second main body surface b is connected to the upper third main body surface c via the folding line m2 on the front side, and the upper third main body surface c is connected to the lower second main surface c via the folding line m3 on the rear side. The lower fourth main body surface d is connected to the upper fourth main body surface e via the folding line m4 on the front side. That is, the fourth main body surface d and the second main body surface b positioned on the lower side, and the first main body surface a, the third main body surface c, and the fifth main body surface e positioned on the upper side are contained in the accommodating space portion. The main body portion 14 is configured to form S.
Further, the first flap surface f2 on the right side enters the space between the first main body surface a and the third main body surface c in a shape in which the S-shape is rotated 90 degrees counterclockwise. More specifically, the first flap surface f2 on the right side has a first flap surface configuration part f2a that is in contact with the rear upper surface of the first main body surface a and the lower surface of the first flap surface configuration part f2b. The first flap surface constituting portion f2b is connected to the first flap surface constituting portion f2b through m1, and the first flap surface constituting portion f2b is in contact with the upper surface of the first flap surface constituting portion f2a and the lower surface of the third main body surface c. The upper surface of the first main body surface a and the third main body surface c from the front end edge of the component part f2a to a slightly rear side (rear end edge of the first flap surface component part f2c) from the front end edge of the first main body surface a. The upper surface of the first main body surface a is in contact with the lower surface and is slightly rearward from the front end edge of the first main body surface a (the rear end edge of the first flap surface constituting part f2c) to the front end edge of the first main body surface a. And it contacts the lower surface of the 1st flap surface structure part f2c, and it is the 1st flap via the broken line m2 on the front side. Connect to component f2c, first flap surface forming portion f2c is, as in contact with the lower surface of the upper surface and the third body surface c of the first flap surface forming portion f2b, is constructed. The second flap surface g2 on the right side enters between the third main body surface c and the fifth main body surface e in such a shape that the S-shape is rotated 90 degrees counterclockwise. More specifically, the second flap surface g2 on the right side is such that the second flap surface constituting portion g2c is in contact with the rear upper surface of the third main body surface c and the lower surface of the second flap surface constituting portion g2d, and is folded at the rear side. It connects to the 2nd flap surface constituent part g2d via m3, the 2nd flap surface constituent part g2d contacts the upper surface of the 2nd flap surface constituent part g2c, and from the front side edge of the 2nd flap surface constituent part g2c The third main body surface is in contact with the upper surface of the third main body surface c up to the rear end edge of the fifth main body surface e, and from the rear end edge of the fifth main body surface e to the rear end edge of the second flap surface constituting portion g2e. the upper surface of the third main body surface c and the second flap surface from the rear end edge of the second flap surface constituting portion g2e to the front end edge of the third main body surface c. It contacts the lower surface of the component part g2e and contacts the second flap surface component part g2e via the fold line m4 on the front side. And, second flap surface constituting portion g2e is, as in contact with the lower surface of the upper surface and the fifth body surface e of the second flap surface constituting portion G2D, is constructed. That is, the 1st flap surface structure part f2a, the 1st flap surface structure part f2b, the 1st flap surface structure part f2c, the 2nd flap surface structure part g2c, the 2nd flap surface structure part g2d, and the 2nd flap surface structure part g2e. And constitutes the right side of the flap portion 16.
As shown in FIG. 13A, when viewed from the accommodation space portion S, the undulating gate bag body 10 is sealed by the main body portion 14 and the flap portion 16 in the vertical direction by vulcanization.
The left side of the flap portion 16 is similarly configured.

  As shown on the left side of FIG. 13 (B), the undulating gate bag body 10 after molding and before vulcanization at the front side edge of the main body portion 14 is arranged in order from the lower side, the fourth main body surface d and the second main body surface d. The surface, the inner layer rubber 126i, the sheet-like release agent bonding draw cloth 127, the sheet-like release agent 128, the inner layer rubber 126i, the first main body surface a, the third main body surface c, and the fifth main body surface e are laminated. Yes. The second main body surface b and the third main body surface c are connected via a broken line m2. The fourth main body surface d and the fifth main body surface e are connected via a broken line m4.

Further, as shown on the right side of FIG. 13 (B), the undulating gate bag body 10 after molding and before vulcanization at the boundary end point 18e, which is one of the four corners of the undulating gate bag body 10, is arranged in order from the lower side. In addition, the fourth main body surface d, the second main body surface b, the inner layer rubber 126i, the sheet-like release agent bonding draw cloth 127, the sheet-like release agent 128, the inner layer rubber 126i, the first flap surface constituting portion f1a, and the first. The flap surface constituting portion f1b, the third main body surface c, the second flap surface constituting portion g1c, and the second flap surface constituting portion g1d are laminated. The 1st main body surface a, the 1st flap surface structure part f1a, the 2nd main body surface b, and the 1st flap surface structure part f1b are connected via the intersection X11. The third main body surface c, the second flap surface constituting portion g1c, the fourth main body surface d, and the second flap surface constituting portion g1d are connected via an intersection point X33.
As shown on the right side of FIG. 13B, when viewed from the accommodation space S, at the boundary end point 18e, which is one of the four corners of the undulating gate bag 10, the left first flap surface f1 and the left first flap surface f1. The flap portion 16 formed by the two flap surfaces g1 is made by continuing the bag forming sheet 12, and the lower second main body surface b, the fourth main body surface d, the upper first main body surface a, and the third main body. The main body 14 formed by the surface c is sealed. That is, even at the boundary end point 18 e, the flap portion 16 is folded and / or curved at the boundary 18 so as to cover the main body portion 14 and is vulcanized and bonded to the main body portion 14 to seal the main body portion 14. The boundary end point 18e has a structure in which the bag forming sheet 12 is continuous and the hole is not opened.
Similarly, the boundary start point 18 s has a structure in which the bag forming sheet 12 is continuous and the hole is not opened.

The intersection X11 between the fold line n1 and the fold line m1 and the intersection X33 between the fold line n3 and the fold line m3 of the bag forming sheet 12 coincide with the end point 18e of the left boundary 18 of the undulating gate bag 10. The intersection X21 between the fold line n2 and the fold line m1 and the intersection X43 between the fold line n4 and the fold line m3 of the bag forming sheet 12 coincide with the end point 18e of the right boundary 18 of the undulating gate bag 10.
The intersection X12 of the fold line n1 and the fold line m2 and the intersection X34 of the fold line n3 and the fold line m4 of the bag forming sheet 12 coincide with the start point 18s of the left boundary 18 of the undulating gate bag 10. The intersection X22 between the fold line n2 and the fold line m2 and the intersection X44 between the fold line n4 and the fold line m4 of the bag forming sheet 12 coincide with the start point 18s of the left boundary 18 of the undulating gate bag 10.

Therefore, the undulating gate bag body 10 formed by the bag body forming sheet 12 and vulcanized as described later is structurally continuous with the bag body forming sheet 12 at the boundary start point 18s or end point 18e. In addition, since the hole is not opened, there is no possibility that the fluid accommodated in the undulating gate bag body 10 leaks over a long period of time without providing a sealing member such as a cover. Further, according to the bag body 10 for undulation gates, it is not necessary to provide a sealing member, and therefore the step in the side view of the bag body 10 for undulation gates after molding can be easily smoothed by using thickened rubber. Vulcanization can be performed not only with a vulcanization can but also with a press vulcanizer.
Further, the conventional undulating gate bag body can be vulcanized only by a large vulcanizing can because of its size, and there is little room for equipment selection, but the undulating gate bag body 10 is vulcanized. Vulcanization can be performed not only by the can but also by a press vulcanizer, so that room for equipment selection can be expanded.

(Opening member)
The main body 14 is inserted through the first main body surface a and the third main body surface c, which are the upper side in the undulating gate bag body 10 of FIG. 10, and the outflow of fluid flowing into the accommodation space S inside the main body 14. A metal opening member 140 serving as an inlet is provided. As shown in FIG. 11, the opening member 140 is a metal disk-shaped member having a circular hole opening 140 a serving as a fluid inflow / outflow opening at the center. The dimensions of the opening member 140 are, for example, an outer diameter of 115 mm, an inner diameter that is the diameter of the opening 140a is 34 mm, and a thickness is 15 mm. Moreover, the opening member 140 is provided so that the opening 140a may be located at a position of, for example, 530 mm from the rear side edge of the undulating gate bag 10 of FIG. The vulcanized adhesive is applied to the opening member 140, and the vulcanized adhesive and the undulating gate bag body 10 are vulcanized at the same time, thereby being integrated with the undulating gate bag body 10. The opening member 140 has a plurality of bolt holes 140b between the inner diameter and the outer diameter so as to surround the opening. The plurality of bolt holes 140b have a function corresponding to a nut for the stud bolt 141. As shown in FIG. 15, the opening member 140 is provided in the main body portion 14, and the opening member 140 and an inflow / outflow pipe 143 to be described later are firmly fastened via a stud bolt 141, whereby the undulating gate bag body 10 and the inflow / outflow pipe 143 are integrated, and there is no possibility that the fluid leaks when the fluid flows into or out of the main body 14.

(Opening member reinforcement)
As shown in FIGS. 11 and 15, opening member reinforcements 1421 and 1423 are provided at the end of the opening member 140 located on the inner surface side and / or outer surface side of the main body portion 14 of the opening member 140. The opening member reinforcements 1421 and 1423 are sheet-like members formed by sandwiching a canvas made by plain weaving of nylon fibers with a rubber member blended with EPDM and natural rubber from both sides, for example. The opening member reinforcements 1421 and 1423 have, for example, a 600 mm square shape and a thickness of 2 mm. By providing the opening member reinforcements 1421 and 1423 at the end of the opening member 140, the integrity of the opening member 140 with the undulating gate bag 10 is enhanced. Therefore, the opening member 140 pressed by the high-pressure fluid may jump out to the inner surface side or the outer surface side of the main body portion 14 of the hoisting gate bag body 10 to damage the inner surface of the main body portion 14 or the inflow / outflow pipe 143. There is no sex. Further, since the opening member reinforcements 1421 and 1423 are provided at the end portion of the opening member 140, there is no possibility that fluid leaks from the periphery of the end portion of the opening member 140 to the outside of the undulating gate bag body 10.
Further, as shown in FIGS. 11 and 15, the third main body surface c around the opening member 140 is cut out, and an opening member reinforcing member 1422 is provided in the cut out portion. Thereby, the opening member reinforcing member 1422 can suppress the surrounding deformation by the opening member 140.

(Inflow / outflow pipe)
As shown in FIG. 15, the inflow / outflow pipe 143 flows in and out of the accommodating space S formed inside the hoisting gate bag body 10, so that it is outside the hoisting gate bag body 10 and at the bottom of the water channel. It is piping connected from rb. A flange 143a is formed at the tip of the inflow / outflow pipe 143 on the side of the undulating gate bag 10. The flange 143a is connected to the bolt hole 140b of the opening member 140 of the undulating gate bag 10 and the stud bolt 141. The flange 143 a has the same outer diameter and inner diameter as the outer diameter and inner diameter of the opening member 140. Further, the flange 143a is formed with a ring-shaped protrusion 143a1 between the inner diameter and the outer diameter on the connection side with the opening member 140. The ring-shaped protrusion 143a1 abuts so as to bite into the fixing belt 200 that holds the undulating gate bag body 10 therebetween, so that the opening member 140 is not easily displaced in the horizontal direction, and the undulated gate bag body 10 flows out. The inlet pipe 143 is integrated more firmly.

(Fixed belt)
As shown in FIG. 14, in order to attach the undulating gate bag 10 to the lower door stop 5, a fixed belt 200 is wound around the undulating gate bag 10. The fixed belt 200 is a rectangular and sheet-like member formed by sandwiching both sides of a canvas made by plain weaving of nylon fibers with an adhesive rubber, generally, for example, a rubber compounded with EPDM and natural rubber. The width in the left-right direction of the fixing belt 200 is the same as or slightly longer than the width of the undulating gate bag 10, for example, 8440 mm. The length of the front and rear of the fixed belt 200 before being wound around the undulating gate bag 10 is, for example, 5740 mm. The fixing belt 200 is folded in half at the length of the front and rear, and the undulating gate bag 10 is sandwiched between the two folds to hold the undulating gate bag 10. In addition, as shown in FIG. 14, after the fixed gate 200 sandwiches the undulating gate bag body 10, the undulating gate bag body 10 and the fixed belt 200 flow in and out of fluid from the bottom rb side of the water channel. In order to make the opening member 140 downward, the top and bottom are inverted. That is, the a side of the undulating gate bag body 10 is located below the fixed belt 200 and on the bottom rb side of the water channel. The undulating gate bag 10 and the fixing belt 200 are integrally bonded by vulcanization. FIG. 14 shows the thickness of each sheet-like member with emphasis.

  As shown in FIG. 14, outer layer rubber 126o is further wound around the outer side of the fixed belt 200 folded in half. The width of the outer rubber 126o in the left-right direction is the same as the width of the fixed belt 200. The front and rear lengths of the outer layer rubber 126o are the same as the front and rear lengths of the fixed belt 200. The outer layer rubber 126o is folded in half at the length of the front and rear, and the fixed belt 200 sandwiching the undulating gate bag 10 is sandwiched between the two folded, and the outside of the fixed belt 200 is exposed to the atmosphere. It is a member that protects against falling objects and solar radiation, and is a rubber having weather resistance, wear resistance, heat resistance and ozone resistance. The outer layer rubber 126o and the fixed belt 200 are bonded together by being vulcanized.

  As shown in FIG. 14, on the inner surface of the foldable fixing belt 200, in order to improve the strength of a bolt hole peripheral portion through which a mounting bolt (not shown), which will be described later, is inserted, a thickening rubberized A cloth 202 is attached. That is, the peripheral portion of the bolt hole of the fixing belt 200 is in a state where two layers of the rubberized cloth 202 for thickening, two layers of the fixing belt 200, and two layers of the outer layer rubber 126o are laminated.

The undulating gate bag body 10 and the fixing belt 200 are vulcanized so that their constituent members are integrally bonded to each other and are in a sealed state except for the opening 140 a of the opening member 140. In particular, the flap portion 16 folded and / or curved at the boundary 18 so as to cover the main body portion 14 is vulcanized and bonded to the main body portion 14 to seal the main body portion 14. The metal opening member 140 to which the vulcanizing adhesive is applied is formed by integrating the opening member 140 and the undulating gate bag body 10 by vulcanizing the vulcanizing adhesive and the undulating gate bag body 10 at the same time. Turn into.
On the other hand, the bag forming sheet 12 forming the upper first main body surface a constituting the inner surface of the main body 14 of the undulating gate bag 10 after forming and the bag forming the lower second main body surface b. Since the sheet-like mold release agent 128 is sandwiched between the molding sheet 12 and a rubberized cloth (bonded rubber on both sides of a canvas made by plain weaving of nylon fibers, generally EPDM and natural rubber, for example) The upper sheet forming sheet 12 formed of a rectangular and sheet-shaped member sandwiched between the formed rubber and rubber-coated cloth (both sides of a canvas made by plain weaving of nylon fibers) In general, for example, a rectangular and sheet-like member formed by sandwiching rubber containing EPDM and natural rubber) and the lower bag-forming sheet 12 is vulcanized and bonded during vulcanization. do not do.

  Since the undulating gate bag 10 is simply smoothed by using thickened rubber, the fixed belt 200 sandwiching the undulating gate bag 10 can be vulcanized by a press vulcanizer. Furthermore, the fixed belt 200 sandwiching the undulating gate bag 10 can be vulcanized by a vulcanizing can.

(fluid)
The fluid accommodated in the accommodating space S of the undulating gate bag 10 may be air that is a compressible fluid, or water or oil that is an incompressible fluid.

  The fixed belt 200, which is folded in half and sandwiches the undulating gate bag body 10 and is provided with an outer layer rubber 126o and a rubberized cloth 202 for thickening, is vulcanized. The rear surface of the door body 2 attached to the lower door 5 On the side, it is attached to the lower door stop 5 using mounting bolts (not shown). This mounting bolt is independent of an instrument for mounting the door body 2 to the lower door stop 5. That is, the door body 2 and the undulating gate bag body 10 are independently attached to the lower door stop 5. Therefore, when the undulating gate bag 10 is replaced, the undulating gate bag 10 can be replaced while temporarily blocking the water flow in the water channel by temporarily fixing the door 2 in the undulated state. it can.

<Second Embodiment>
Next, a second embodiment of the undulating gate bag will be described.
The symbol for the undulating gate bag is 10A, and the symbol for the bag forming sheet is 12A. The same components as those of the first embodiment are denoted by the same reference numerals, and the description overlapping with that of the first embodiment is omitted.

(Sheet for bag forming)
The planar shape of the bag forming sheet 12A is, for example, the shape of an expanded view of envelope folding as shown in FIG. 12 A of sheet | seats for bag body shaping | molding have the main body surface 122 which comprises the main-body part 14 of the bag body 10 for undulation gates, and the flap surface 124 which comprises the flap part 16 of the bag body 10 for undulation gates. Specifically, the bag forming sheet 12 shown in FIG. 17 includes a first main body surface a, a second main body surface b, a third main body surface c, which are main body surfaces 122, and a left first first body, which is a flap surface 124. It has a flap surface f1 and a first flap surface f2 on the right side. The first main body surface a, the second main body surface b, and the third main body surface c are sequentially connected from the far side to the near side. That is, the second main body surface b is connected to the first main body surface a on the front side, and the third main body surface c is connected to the second main body surface b on the front side opposite to the first main body surface a. . The first flap surface f1 on the left side is integrally connected to the left side of the first main body surface a from the middle of the front side of the left edge of the first main body surface a, and then connected to the left side of the second main body surface b. Then, it is integrally connected to the left side of the third main body surface c halfway beyond the left edge of the third main body surface c. Similarly, the first flap surface f2 on the right side is integrally connected to the right side of the first main body surface a from the middle on the near side of the right edge of the first main body surface a. Connect to the right side, and then integrally connect to the right side of the third main body surface c to the middle of the right side edge of the third main body surface c. That is, the first flap surface f1 on the left side and the first flap surface f2 on the right side are a part of the first body surface a, a portion of the second body surface b, and a portion of the third body surface c that are not connected to each other. It is a pair of flap surface 124 connected so that it may be pinched | interposed.

  The bag forming sheet 12A shown in FIG. 17 has, as its outer peripheral edge, an outer peripheral edge 12Aj1 extending in the left-right direction on the other side of the first main body surface a as viewed from the third main body surface c side, and a first main body surface a. An outer peripheral edge 12Aj2 extending in the front-rear direction on the left side, an outer peripheral edge 12Aj3 extending in the left-right direction beyond the left first flap surface f1 and away from the first main body surface a, and a left first flap An outer peripheral edge 12Aj4 extending in the front-rear direction on the left side of the surface f1, an outer peripheral edge 12Aj5 extending in the left-right direction on the near side of the left first flap surface f1 and away from the third main body surface c, and a third main body An outer peripheral edge 12Aj6 extending in the front-rear direction on the left side of the surface a, an outer peripheral edge 12Aj7 extending in the left-right direction on the front side of the third main body surface c, an outer peripheral edge 12Aj8 extending in the front-rear direction on the right side of the third main body surface c, and the right side First hula An outer peripheral edge 12Aj9 extending in the left-right direction on the front side of the push surface f2 and extending to the right from the third main body surface c; an outer peripheral edge 12Aj10 extending in the front-rear direction on the right side of the right first flap surface f2; An outer peripheral edge 12Aj11 extending in the left-right direction beyond the first flap surface f2 and extending away from the first main body surface a; and an outer peripheral edge 12Aj12 extending in the front-rear direction on the right side of the first main body surface a. .

  As shown in FIG. 17, the bag-forming sheet 12A is folded or curved to be formed into a bag shape. However, when folded or curved, the folding line m1, the folding line m2, the folding line n1, and the folding line n2 are formed. It is formed.

(Main body)
As shown in FIG. 21C, the main body portion 14 of the undulating gate bag body 10A has two layers of the first main body surface “a” and the third main body surface “c” on the upper side across the accommodation space S, the lower side. 1 layer of the second main body surface b is laminated. That is, the main body portion 14 of the undulating gate bag body 10 of FIG. 21 includes the first main body surface a, the second main body surface b, and the third main body surface c.

(Flap part)
The flap portion 16 of the undulating gate bag body 10A shown in FIG. 21 includes a left first flap surface f1 and a right first flap surface f2 which are the flap surfaces 124, and the main body portion 14 with a boundary 18 therebetween. The first flap surface f1 on the left side and the first flap surface f2 on the right side cover the first main body surface a located on the upper side from the second main body surface b located on the lower side. It is formed by.

(boundary)
The boundary 18 is an edge on both sides in the left-right direction in the undulating gate bag body 10A after molding as shown in FIG. As shown in FIG. 21A, the boundary 18 includes a start point 18s located on the near side and an end point 18e located on the far side.
As will be described later, an intersection point X12, an intersection point X22, and an end point 18e are points that should be the starting point 18s on the bag body forming sheet 12A in FIG. 17 before being formed into the undulating gate bag body 10A in FIG. The intersection point X11 and the intersection point X21 which are power points are located inside the outer peripheral edge 12AjN (N = 1 to 12) of the bag forming sheet 12A, and the outer peripheral edge 12AjN (N = N = 12) of the bag forming sheet 12A. 1-12). That is, the start point 18s and the end point 18e are continuously formed by the bag forming sheet 12A and have a structure in which no hole is opened. As a result, the undulating gate bag 10A can eliminate the cause of fluid leakage over a long period of time without providing sealing members such as eyelids at the start point 18s and the end point 18e corresponding to the four corners.

  The fold line n1 and the fold line m1 of the bag forming sheet 12A form an intersection point X11. The broken line n1 and the broken line m2 form an intersection X12. The broken line n2 and the broken line m1 form an intersection point X21. The broken line n2 and the broken line m2 form an intersection point X22.

  The intersection point X11, the intersection point X12, the intersection point X21, and the intersection point X22 are not in contact with any of the outer peripheral edges 12jN (N = 1 to 12) of the bag forming sheet 12A, and are separated from each other. The outer peripheral edge 12jN (N = 1 to 12) is located inside.

  As shown in FIG. 21 (C), EPDM and EPDM are formed on the inner surface side of the upper first main body surface a and the lower second main body surface b constituting the inner surface of the main body portion 14 of the undulating gate bag body 10A. An inner layer rubber 126i, which is a sheet-like rubber member blended with natural rubber, is provided so as to be inscribed. Alternatively, an adhesive rubber may be provided on the inner surface side so as to be inscribed. The main body portion 14 is provided with a sheet-like release agent bonding pulling cloth 127 so as to be inscribed in an inner layer rubber 126i provided on the inner surface side of the main body portion 14 and on the b side. Further, the main body 14 is provided with a sheet-like release agent 128 so as to be inscribed in the sheet-like release agent bonding draw cloth 127 provided on the inner surface side and the b side of the main body 14.

Hereinafter, the structure of the undulating gate bag body 10A according to the second embodiment will be described in detail with reference to FIG.
As shown on the left side of FIG. 21 (C), the undulating gate bag body 10A before molding and vulcanization at the front side edge of the main body portion 14 is, in order from the lower side, the second main body surface, the inner layer rubber 126i, The sheet-like release agent bonding draw cloth 127, the sheet-like release agent 128, the inner layer rubber 126i, the first main body surface a, and the third main body surface c are laminated. The second main body surface b and the third main body surface c are connected via a broken line m2.

Furthermore, as shown on the right side of FIG. 21 (C), the undulating gate bag body 10A before vulcanization after molding at the boundary end point 18e, which is one of the four corners of the undulating gate bag body 10A, is in order from the lower side. The second main body surface b, the inner layer rubber 126i, the sheet-like release agent bonding draw cloth 127, the sheet-like release agent 128, the inner layer rubber 126i, the first flap surface constituting portion f1a, and the first flap surface constituting portion f1b, Are stacked. The 1st main body surface a, the 1st flap surface structure part f1a, the 2nd main body surface b, and the 1st flap surface structure part f1b are connected via the intersection X11.
As shown on the right side of FIG. 21C, the flap formed by the left first flap surface f1 at the boundary end point 18e, which is one of the four corners of the undulating gate bag 10A, as viewed from the accommodation space S. The part 16 continues the bag forming sheet 12A to seal the main body part 14 formed by the lower second main body surface b and the upper first main body surface a. That is, even at the boundary end point 18 e, the flap portion 16 is folded and / or curved at the boundary 18 so as to cover the main body portion 14 and is vulcanized and bonded to the main body portion 14 to seal the main body portion 14. The boundary end point 18e has a structure in which the bag forming sheet 12A is continuous and the hole is not opened.
Similarly, the boundary starting point 18s has a structure in which the bag forming sheet 12A is continuous and the hole is not opened.

Therefore, the undulating gate bag body 10A formed and vulcanized by the bag body forming sheet 12A is structurally continuous with the bag body forming sheet 12A at the boundary start point 18s or end point 18e, Since the hole is not opened, there is no possibility that the fluid stored in the undulating gate bag body 10A leaks over a long period of time without providing a sealing member such as a cover. Furthermore, according to the undulating gate bag body 10A, since it is not necessary to provide a seal member, the step in the side view of the undulating gate bag body 10A after molding can be easily smoothed by using thickened rubber. Vulcanization can be performed not only with a vulcanization can but also with a press vulcanizer.
Further, the conventional undulating gate bag body can be vulcanized only by a large vulcanizing can because of its size, and there is little room for equipment selection. However, the undulating gate bag body 10A is vulcanized. Vulcanization can be performed not only by the can but also by a press vulcanizer, so that room for equipment selection can be expanded.

  Hereinafter, the process of manufacturing the undulating gate bag 10 will be described for each process.

<First Embodiment>
In step 1000 of FIG. 16, as shown in FIG. 2, the bag forming sheet 12 is formed of, for example, one rubberized cloth having a width of 2 m, or a plurality of rubberized cloths are connected to the width of the joint portion 12 s. Are formed so as to overlap each other, for example, to be 200 mm. When the bag forming sheet 12 is formed by overlapping a plurality of rubberized cloths, the difference in thickness due to the lamination of the bag forming sheet 12 between the joining part 12s and the non-joining part 12t increases. It is smoothed using thick rubber.
2 includes a first main body surface a, a second main body surface b, a third main body surface c, a fourth main body surface d, a fifth main body surface e, and a flap. A left first flap surface f1, a right first flap surface f2, a left second flap surface g1, and a right second flap surface g2 forming the portion 16 are formed. The first flap surface f1 on the left side and the first flap surface f2 on the right side sandwich a part of the first main body surface a, the second main body surface b, and the third main body surface c that are not connected to each other. It is a pair of flap surfaces 124 connected in this way. The second flap surface g1 on the left side and the second flap surface g2 on the right side sandwich a part of the third main body surface c, a part of the fourth main body surface d, and a part of the fifth main body surface e that are not connected to each other. It is a pair of flap surfaces 124 connected in this way.

  In step 1001 of FIG. 16, as shown in FIG. 3, the inner rubber 126 i is spread and placed on the first main body surface a and the second main body surface b of the bag forming sheet 12. When the bag forming sheet 12 is formed into the undulating gate bag 10, the inner rubber layer 126 i is provided on the inner surface side of the main body 14 of the undulating gate bag 10.

  In step 1002 of FIG. 16, as shown in FIG. 3, the sheet-like release agent bonding pulling cloth 127 is spread over the entire inner surface of the second body surface b on the inner rubber 126 i on the bag forming sheet 12. Put. That is, the sheet-like release agent bonding pulling cloth 127 is provided on a portion of the main surface of the bag forming sheet 12 to be the inner surface of the main body portion 14.

In step 1003 of FIG. 16, as shown in FIG. 3, the sheet-like mold release agent 128 is placed on the second main body surface b of the bag forming sheet 12, and the sheet-like mold release agent bonding draw cloth 127. Spread across the entire surface. That is, the sheet-like mold release agent 128 is provided on the sheet-like mold release agent bonding draw cloth 127 of the bag-forming sheet 12, and the sheet is formed on the inner surface side of the body portion 14 of the undulating gate bag body 10 after molding. It will be arranged so as to be inscribed through the pulling cloth 127 for adhesive release agent.
Therefore, the bag forming sheet 12 forming the upper first main body surface a constituting the inner surface of the main body portion 14 of the undulating gate bag 10 after forming and the bag forming the lower second main body surface b. Since the sheet-like mold release agent 128 is sandwiched between the molding sheet 12 and a rubberized cloth (bonded rubber on both sides of a canvas made by plain weaving of nylon fibers, generally EPDM and natural rubber, for example) The upper sheet forming sheet 12 formed of a rectangular and sheet-shaped member sandwiched between the formed rubber and rubber-coated cloth (both sides of a canvas made by plain weaving of nylon fibers) In general, for example, a rectangular and sheet-like member formed by sandwiching rubber containing EPDM and natural rubber) and the lower bag-forming sheet 12 is vulcanized and bonded during vulcanization. do not do.

Next, the process of folding and / or curving the bag forming sheet 12 will be described. In the following description, the folding process will be described.
As shown in FIG. 4 and step 1004 of FIG. 16, the first body surface a of the bag forming sheet 12 is folded back so as to be folded at the fold line m1, and the first body surface a is folded to the second body surface b. Overlap (first fold).
At this time, the first flap surface constituent part f1a of the left first flap surface f1 is folded over the first flap surface constituent part f1b, and the first flap surface constituent part f2a of the right first flap surface f2 is the first flap. It is folded on the surface constituting part f2b. At the same time, the intersection X11 is maintained in a state surrounded by the upper first flap surface constituting portion f1a, the first main body surface a, the lower first flap surface constituting portion f1b, and the second main body surface b. And the state of being continuously formed by the bag forming sheet 12 is maintained. Similarly, the intersection X21 maintains a state surrounded by the upper first flap surface constituting part f2a, the first main body surface a, the lower first flap surface constituting part f2b, and the second main body surface b. The state of being continuously formed with the bag forming sheet 12 is maintained.

Next, as shown in FIG. 5 and step 1005 in FIG. 16, the first flap surface constituting portion f1a folds the left first flap surface f1 folded over the first flap surface constituting portion f1b at a folding line n1. The first flap surface constituting part f2a is folded so that the first flap surface f2 on the right side folded over the first flap surface constituting part f2b is valley-folded at the folding line n2. That is, the first flap surface f1 on the left side and the first flap surface f2 on the right side are folded on the second body surface b on which the first body surface a is placed (second folding).
At this time, the first flap surface constituting portion f1a, the first flap surface constituting portion f1b, the first flap surface constituting portion f2a and the first flap surface constituting portion f2b are folded on the upper surface of the first main body surface a. The first flap surface constituting part f1c and the first flap surface constituting part f2c are folded over a part of the other side of the third main body surface c. At the same time, the intersection X11 is maintained in a state surrounded by the upper first flap surface constituting portion f1a, the first flap surface constituting portion f1b, the first main body surface a, and the lower second main body surface b. And the state of being continuously formed by the bag forming sheet 12 is maintained. Similarly, the intersection X21 maintains a state surrounded by the upper first flap surface constituting part f2a, the first flap surface constituting part f2b, the first main body surface a, and the lower second main body surface b. The state of being continuously formed with the bag forming sheet 12 is maintained. Furthermore, at the same time, the intersection X12 is maintained in a state surrounded by the upper first flap surface constituting portion f1b, the first flap surface constituting portion f1c, the lower second main body surface b, and the third main body surface c. And the state of being continuously formed by the bag forming sheet 12 is maintained. Similarly, the intersection point X22 maintains a state surrounded by the upper first flap surface constituting portion f2b, the first flap surface constituting portion f2c, the lower second main body surface b, and the third main body surface c. The state of being continuously formed with the bag forming sheet 12 is maintained.

Next, as shown in FIG. 6 and step 1006 of FIG. 16, the second main body surface b is folded back so as to be folded at the folding line m2, and the left first flap surface f1, the right first flap surface f2, and the second The second main body surface b on which the first main body surface a is placed is folded over the third main body surface c (third fold).
At this time, the first flap surface constituting portion f1b is folded on the upper surfaces of the first flap surface constituting portion f1c and the third main body surface c which are folded to the left side and part of the other side of the third body surface c. Similarly, the first flap surface constituting portion f1b is folded on the upper surfaces of the first flap surface constituting portion f2c and the third main body surface c which are folded to the right side and part of the other side of the third body surface c. At the same time, the intersection X12 is maintained in a state surrounded by the lower third main body surface c, the first flap surface constituting portion f1c, the first flap surface constituting portion f1b, and the upper second main body surface b. And the state of being continuously formed by the bag forming sheet 12 is maintained. Similarly, the intersection point X22 maintains a state surrounded by the lower third main body surface c, the first flap surface constituent portion f2c, the first flap surface constituent portion f2b, and the upper second main body surface b. The state of being continuously formed with the bag forming sheet 12 is maintained. At the same time, the intersection point X11 overlaps the intersection point X33, and the intersection point X21 overlaps the intersection point X43. It does not change that the intersection X11 and the intersection X21 maintain the state continuously formed with the bag forming sheet 12.

Next, as shown in FIG. 7 and step 1007 in FIG. 16, the third main body surface c is folded back so as to be folded at the fold line m3, the left first flap surface f1, the right first flap surface f2, the first The third main body surface c on which the first main body surface a and the second main body surface b are placed is folded onto the fourth main body surface d (fourth folding).
At this time, the second flap surface constituting portion g1c of the left second flap surface g1 is folded over the second flap surface constituting portion g1d, and the second flap surface constituting portion g2c of the right second flap surface g2 is the second flap. It is folded on the surface constituting part g2d. At the same time, the intersection X33 is maintained in a state surrounded by the lower second flap surface constituting portion g1d, the fourth main body surface d, the upper second flap surface constituting portion g1c, and the third main body surface c. And the state of being continuously formed by the bag forming sheet 12 is maintained. Similarly, the intersection point X43 maintains a state surrounded by the lower second flap surface constituting portion g2d, the fourth main body surface d, the upper second flap surface constituting portion g2c, and the third main body surface c. The state of being continuously formed with the bag forming sheet 12 is maintained. At the same time, the intersection point 12 overlaps the intersection point X34, and the intersection point X22 overlaps the intersection point X44. It remains unchanged that the intersection point X11, the intersection point X21, the intersection point X12, and the intersection point X22 are continuously formed with the bag forming sheet 12.

Next, as shown in FIG. 8 and step 1008 in FIG. 16, the second flap surface constituting portion g1c folds the left second flap surface g1 folded over the second flap surface constituting portion g1d at the folding line n3. The second flap surface constituting part g2c is folded so that the second flap surface g2 on the right side folded over the second flap surface constituting part g2d is folded at the fold line n4. That is, the first flap surfaces f1, f2, the first main body surface a, the second main body surface b, and the third main body surface c are placed on the left second flap surface g1 and the right second flap surface g2. 4 Fold over the main body surface d (fifth fold).
At this time, the second flap surface constituting portion g1c, the second flap surface constituting portion g1d, the second flap surface constituting portion g2c, and the second flap surface constituting portion g2d are folded on the upper surface of the third main body surface c, The second flap surface constituting part g1e and the second flap surface constituting part g2e are folded over a part of the other side of the fifth main body surface e. At the same time, the intersection X33 is maintained in a state surrounded by the upper second flap surface constituting portion g1c, the second flap surface constituting portion g1d, the third main body surface c, and the lower fourth main body surface d. And the state of being continuously formed by the bag forming sheet 12 is maintained. Similarly, the intersection X43 is maintained in a state surrounded by the upper second flap surface constituting portion g2c, the second flap surface constituting portion g2d, the third main body surface c, and the lower fourth main body surface d. The state of being continuously formed with the bag forming sheet 12 is maintained. At the same time, the intersection X34 is maintained in a state surrounded by the upper second flap surface constituting portion g1d, the second flap surface constituting portion g1e, the lower fourth main body surface d, and the fifth main body surface e. And the state of being continuously formed by the bag forming sheet 12 is maintained. Similarly, the intersection point X44 maintains a state surrounded by the upper second flap surface constituting portion g2d, the second flap surface constituting portion g2e, the lower fourth main body surface d, and the fifth main body surface e. The state of being continuously formed with the bag forming sheet 12 is maintained. It remains unchanged that the intersection point X11, the intersection point X21, the intersection point X12, and the intersection point X22 are continuously formed with the bag forming sheet 12.

Next, as shown in FIG. 9 and step 1009 of FIG. 16, the fifth main body surface e where the second flap surface constituting portion g1e and the second flap surface constituting portion g2e are folded is valley-folded along the folding line m4. The fourth main body surface on which the fifth main body surface e is placed is placed on the first flap surfaces f1, f2, the second flap surfaces g1, g2, the first main body surface a, the second main body surface b, and the third main body surface c. Fold to d (sixth fold).
At this time, the second flap surface constituting part g1e that folds on the left side of the fifth main body surface e and a part on the other side is folded on the upper surface of the second flap surface constituting part g1d. Similarly, the second flap surface constituting part g2e that folds on the right side of the fifth main body surface e and a part on the other side is folded on the upper surface of the second flap surface constituting part g2d. At the same time, the intersection X34 is maintained in a state surrounded by the upper second flap surface constituting portion g1d, the second flap surface constituting portion g1e, the fifth main body surface e, and the lower fourth main body surface d. And the state of being continuously formed by the bag forming sheet 12 is maintained. Similarly, the intersection X44 maintains a state surrounded by the upper second flap surface constituting portion g2d, the second flap surface constituting portion g2e, the fifth main body surface e, and the lower fourth main body surface d. The state of being continuously formed with the bag forming sheet 12 is maintained. It remains unchanged that the intersection point X11, the intersection point X21, the intersection point X12, the intersection point X22, the intersection point X33, and the intersection point X43 are continuously formed in the bag forming sheet 12.

As shown in FIG. 9, the edge extending in the front-rear direction at the left end in the plan view of the undulating gate bag body 10 formed by steps 1004 to 1009 (first fold to sixth fold) is the main body portion 14. This is a boundary 18 that becomes a boundary between the flap portion 16 and the flap portion 16. Similarly, the edge extending in the front-rear direction at the right end in the plan view of the formed undulating gate bag body 10 is a boundary 18 that serves as a boundary between the main body 14 and the flap 16. A fold line n1 connecting the intersection point X11 and the intersection point X12 and a fold line n3 connecting the intersection point X33 and the intersection point X34 form a left boundary 18. Similarly, a fold line n2 connecting the intersection point X21 and the intersection point X22 and a fold line n4 connecting the intersection point X43 and the intersection point X44 form a right boundary 18.
The start point 18s of the left boundary 18 overlaps the intersection point X12 and the intersection point X34, and the end point 18e of the left boundary 18 overlaps the intersection point X11 and the intersection point X33. Similarly, the start point 18s of the right boundary 18 overlaps with the intersection point X22 and the intersection point X44, and the end point 18e of the right boundary 18 overlaps with the intersection point X21 and the intersection point X43.
Therefore, the undulating gate bag body 10 formed by the bag body forming sheet 12 in the above-described steps and vulcanized as will be described later is structurally designed for bag body forming at the boundary start point 18s or end point 18e. Since the sheet 12 is continuous and does not have a hole, there is no possibility that the fluid accommodated in the undulating gate bag body 10 leaks over a long period of time without providing a sealing member such as a weather seal. . Further, according to the bag body 10 for undulation gates, it is not necessary to provide a sealing member, and therefore the step in the side view of the bag body 10 for undulation gates after molding can be easily smoothed by using thickened rubber. Vulcanization can be performed not only with a vulcanization can but also with a press vulcanizer.

  Of the step of folding the bag-forming sheet 12, the first folding, the third folding, the fourth folding, and the sixth folding make the bag-forming sheet 12 folded and / or curved. This is a step of forming the main body portion 14 that forms the space (accommodating space portion S) for accommodating the fluid inside the bag-forming sheet 12 by facing the sheet.

  Of the step of folding the bag-forming sheet 12, the second fold and the fifth fold extend the flap portion 16 extending outward from the boundary 18 with the main body portion 14, the starting point 18s of the boundary 18 or Points X12, X22, X34, X44, X11, X21, X33, and X43 on the bag forming sheet 12 to be the end point 18e are separated from the outer peripheral edge 12jN (N = 1 to 20) of the bag forming sheet 12. In this step, the flap portion 16 is overlapped with the main body portion 14 by being folded so as to cover the main body portion 14 at the boundary 18.

  In step 1010 of FIG. 16, as shown in FIGS. 10 and 11, the third main body surface c and the first main body surface a are penetrated from the upper side of the formed undulating gate bag body 10 toward the accommodation space S. A hole is perforated so that the opening member 140 is fitted into the hole, and the opening member 140 is provided in the undulating gate bag body 10. In other words, the metal opening member 140 is provided in the main body portion 14 as an inlet / outlet for the fluid flowing into the main body portion 14 and coated with the vulcanizing adhesive.

  In Step 1011 of FIG. 16, the fixing belt 200 is prepared by overlapping a plurality of rubberized cloths so that the width of the joint portion 12s is, for example, 200 mm.

  In step 1012 of FIG. 16, a rubberized cloth 202 for increasing the thickness is provided in the peripheral portion of the portion of the fixing belt 200 where the hole for inserting the mounting bolt is formed. As a result, as shown in FIG. 14, a thickening rubberized cloth 202 is provided on the inner surface side of the fixed belt 200 which is folded in half and sandwiches the undulating gate bag body 10 and is wound with the outer layer rubber 126o. .

  In step 1013 of FIG. 16, as shown in FIG. 14, the fixed belt 200 is placed with the molded undulating gate bag body 10, folded in half in the front-rear direction, and undulated gate bag body 10. Is inserted.

  In step 1014 of FIG. 16, as shown in FIG. 14, the outer layer rubber 126 o is wound around the outer surface side of the half-folded fixing belt 200.

  In step 1015 of FIG. 16, as shown in FIG. 23, the fixing belt 200 folded in half and sandwiching the bag body 10 for undulation gate is used for the undulation gate in a direction orthogonal to or intersecting with the pressing direction by the press vulcanizer. The bag body 10 is fitted into a mold 300 having a frame 300 f for preventing deformation of the bag body 10. The frame 300f is disposed around the mold 300, and has a height approximately equal to the thickness of the fixed belt 200 sandwiching the undulating gate bag body 10 therebetween. When the frame 300f is vulcanized by a press vulcanizer, the undulating gate bag body 10 and the fixing belt 200 in which the rubber member is in a fluid state can be prevented from being deformed and flowing out of the mold. it can. A rough top sheet 310 is placed on the mold 300. The rough top sheet 310 is a canvas made by plain weaving of nylon fibers. When the rough top sheet 310 is vulcanized by a press vulcanizer, the surface of the fixing belt 200 and the undulating gate bag body 10 is prevented from being uneven, and the rough top sheet 310 is accumulated in the concave portion of the surface of the fixing belt 200. Easy air escapes through the canvas, and the failure of the fixing belt 200 and the undulating gate bag 10 is suppressed.

  In step 1016 of FIG. 16, the fixed belt 200 which is folded in half and sandwiches the undulating gate bag body 10 and is fitted in the mold 300 is vulcanized together with the mold 300 by a press vulcanizer. Thereby, the bag body 10 for undulating gates, which is molded into a bag shape using the sheet 12 for bag body molding and includes the main body portion 14 and the flap portion 16, is vulcanized. The flap portion 16 is vulcanized and bonded to the main body portion 14 to seal the main body portion 14.

<Second Embodiment>
Subsequently, a process of manufacturing the undulating gate bag 10A according to the second embodiment will be described for each step. However, description of the process which overlaps with the process in 1st Embodiment is abbreviate | omitted.

In step 2000 of FIG. 22, the bag forming sheet 12 </ b> A is formed by a single rubberized cloth, or is formed by overlapping a plurality of rubberized cloths.
17A and 18B, the bag forming sheet 12A includes a first main body surface a, a second main body surface b, a third main body surface c constituting the main body portion 14, and a first left side constituting the flap portion 16. A flap surface f1 and a first flap surface f2 on the right side are formed. The first flap surface f1 on the left side and the first flap surface f2 on the right side sandwich a part of the first main body surface a, the second main body surface b, and the third main body surface c that are not connected to each other. It is a pair of flap surfaces 124 connected in this way.

  Since the processes from step 2001 to step 2003 in FIG. 22 overlap with the processes from step 1001 to step 1003 in FIG. 16 in the first embodiment, description thereof is omitted.

As shown in step 2004 of FIG. 19 and FIG. 22, the first body surface a of the bag forming sheet 12A is folded back so as to be folded at the folding line m1, and the first body surface a is folded to the second body surface b. Overlap (first fold).
At this time, the first flap surface constituent part f1a of the left first flap surface f1 is folded over the first flap surface constituent part f1b, and the first flap surface constituent part f2a of the right first flap surface f2 is the first flap. It is folded on the surface constituting part f2b. At the same time, the intersection X11 is maintained in a state surrounded by the upper first flap surface constituting portion f1a, the first main body surface a, the lower first flap surface constituting portion f1b, and the second main body surface b. Thus, the state of being continuously formed with the bag forming sheet 12A is maintained. Similarly, the intersection X21 maintains a state surrounded by the upper first flap surface constituting part f2a, the first main body surface a, the lower first flap surface constituting part f2b, and the second main body surface b. The state of being continuously formed with the bag forming sheet 12A is maintained.

Next, as shown in step 2005 of FIG. 20 and FIG. 22, the first flap surface configuration part f1a folds the left first flap surface f1 folded over the first flap surface configuration part f1b at the folding line n1. The first flap surface constituting part f2a is folded so that the first flap surface f2 on the right side folded over the first flap surface constituting part f2b is valley-folded at the folding line n2. That is, the first flap surface f1 on the left side and the first flap surface f2 on the right side are folded on the second body surface b on which the first body surface a is placed (second folding).
At this time, the first flap surface constituting portion f1a, the first flap surface constituting portion f1b, the first flap surface constituting portion f2a and the first flap surface constituting portion f2b are folded on the upper surface of the first main body surface a. The first flap surface constituting part f1c and the first flap surface constituting part f2c are folded over a part of the other side of the third main body surface c. At the same time, the intersection X11 is maintained in a state surrounded by the upper first flap surface constituting portion f1a, the first flap surface constituting portion f1b, the first main body surface a, and the lower second main body surface b. And the state of being continuously formed by the bag forming sheet 12 is maintained. Similarly, the intersection X21 maintains a state surrounded by the upper first flap surface constituting part f2a, the first flap surface constituting part f2b, the first main body surface a, and the lower second main body surface b. The state of being continuously formed with the bag forming sheet 12 is maintained. Furthermore, at the same time, the intersection X12 is maintained in a state surrounded by the upper first flap surface constituting portion f1b, the first flap surface constituting portion f1c, the lower second main body surface b, and the third main body surface c. And the state of being continuously formed by the bag forming sheet 12 is maintained. Similarly, the intersection point X22 maintains a state surrounded by the upper first flap surface constituting portion f2b, the first flap surface constituting portion f2c, the lower second main body surface b, and the third main body surface c. The state of being continuously formed with the bag forming sheet 12A is maintained.

Next, as shown in FIG. 21 and step 2006 in FIG. 22, the third main body surface c is folded back so as to be folded at the folding line m2, and the left first flap surface f1, the right first flap surface f2, and the second The third body surface c is folded over the second body surface b on which the one body surface a is placed (third fold).
At this time, the first flap surface constituting portion f1c and the third main body surface c that are folded to the left side of the third main body surface c and a part on the other side are folded on the upper surface of the first flap surface constituting portion f1b. Similarly, the first flap surface constituting part f2c and the third main body face c that are folded to the right side of the third main body face c and a part on the other side are folded on the upper surface of the first flap face constituting part f1b. At the same time, the intersection X12 is maintained in a state surrounded by the upper third main body surface c, the first flap surface constituting portion f1c, the first flap surface constituting portion f1b, and the lower second main body surface b. And the state of being continuously formed by the bag forming sheet 12 is maintained. Similarly, the intersection point X22 maintains a state surrounded by the upper third main body surface c, the first flap surface constituting portion f2c, the first flap surface constituting portion f2b, and the lower second main body surface b. The state of being continuously formed with the bag forming sheet 12A is maintained. It does not change that the intersection X11 and the intersection X21 maintain the state continuously formed with the sheet | seat 12A for bag body shaping | molding.

As shown in FIG. 21, the edge extending in the front-rear direction at the left end in the plan view of the bag body 10A for undulating gates formed by steps 2004 to 2006 (first fold to third fold) is the main body portion 14. This is a boundary 18 that becomes a boundary between the flap portion 16 and the flap portion 16. Similarly, the edge extending in the front-rear direction at the right end in a plan view of the formed undulating gate bag body 10 </ b> A is a boundary 18 that serves as a boundary between the main body portion 14 and the flap portion 16. A broken line n1 connecting the intersection point X11 and the intersection point X12 forms a left boundary 18. Similarly, a broken line n2 connecting the intersection point X21 and the intersection point X22 forms the right boundary 18.
The start point 18s of the left boundary 18 overlaps with the intersection point X12, and the end point 18e of the left boundary 18 overlaps with the intersection point X11. Similarly, the start point 18s of the right boundary 18 overlaps the intersection point X22, and the end point 18e of the right boundary 18 overlaps the intersection point X21.
Therefore, the undulating gate bag body 10A formed and vulcanized by the bag body forming sheet 12A in the above-described steps is structurally continuous with the bag body forming sheet 12A at the boundary start point 18s or end point 18e. In addition, since the hole is not opened, there is no possibility that the fluid stored in the undulating gate bag body 10A leaks over a long period of time without providing a sealing member such as a weather strip. Furthermore, according to the undulating gate bag body 10A, since it is not necessary to provide a seal member, the step in the side view of the undulating gate bag body 10A after molding can be easily smoothed by using thickened rubber. Vulcanization can be performed not only with a vulcanization can but also with a press vulcanizer.

  Of the steps of folding the bag forming sheet 12A, the first folding and the third folding make the bag forming sheet 12A face each other by folding and / or curving the bag forming sheet 12A. This is a step of forming the main body portion 14 that forms a space (accommodating space portion S) for accommodating a fluid inside thereof.

  Of the step of folding the bag forming sheet 12A, the second folding should be the start point 18s or the end point 18e of the boundary 18 with the flap portion 16 extending outward from the boundary 18 with the body portion 14. The points X12, X22, X11, and X21 on the bag forming sheet 12A cover the main body 14 at the boundary 18 that is separated from the outer peripheral edge 12jN (N = 1 to 12) of the bag forming sheet 12. In this step, the flap portion 16 is overlapped with the main body portion 14.

  In step 2007 of FIG. 22, a hole is drilled from the upper side of the formed undulating gate bag body 10A toward the accommodation space S through the first main body surface a, and the opening member 140 is fitted into the hole. Then, the opening member 140 is provided in the undulating gate bag body 10A. In other words, the metal opening member 140 is provided in the main body portion 14 as an inlet / outlet for the fluid flowing into the main body portion 14 and coated with the vulcanizing adhesive.

  Since the processes from step 2008 to step 2013 in FIG. 22 overlap with the processes from step 1011 to step 1016 in FIG. 16 in the first embodiment, description thereof is omitted.

As described above, the embodiment of the present invention has been disclosed in the above description, but the present invention is not limited to this.
That is, various modifications can be made to the embodiment described above with respect to the mechanism, shape, material, quantity, position, arrangement, etc., without departing from the scope of the technical idea and object of the present invention. Which are included in the present invention.

  For example, in the above-described embodiment, the opening member 140 and the opening member reinforcements 1421, 1422, and 1423 are provided in the undulating gate bag body 10, but as other embodiments of the undulating gate bag body 10, The opening member 140 and the opening member reinforcements 1421, 1422, and 1423 may not be provided by using other means for integrally connecting the undulating gate bag 10 and the inflow / outflow pipe 143.

  Further, for example, in the above-described embodiment, the inner layer rubber 126 i, the sheet-like release agent bonding draw cloth 127, and the sheet-like release agent 128 are provided on the inner surface side of the main body 140 of the undulating gate bag body 10. However, as another embodiment of the bag body 10 for undulating gates, an inner layer rubber 126i can be obtained by using other means for protecting the bag forming sheet 12 on the inner surface side of the main body 14 from air and condensed water. May not be provided. Further, by using other means for preventing adhesion of the bag forming sheet 12 on the inner surface side of the main body 14, the sheet-like release agent bonding fabric 127 and the sheet-like release agent 128 are not provided. Also good.

  Further, for example, in the first embodiment of the undulating gate bag body 10, the bag forming sheet 12 is folded six times, and the number of layers is two or more, which is the second embodiment. Then, the folding number of the bag-forming sheet 12A is 3 and the number of laminations is one or more. However, in other embodiments, both the number of foldings and the number of laminations are limited to these values. is not.

DESCRIPTION OF SYMBOLS 1 Relief gate 2 Door body 2a Skin plate 2b Reinforcement rib 3 Door body fastener 4 Fixing part 5 Lower door contact 6 Side door contact 7 Opening meter S Storage space rb Bottom of water channel 10, 10A Relief gate bag 12 , 12A Bag forming sheet 14 Main body portion 16 Flap portion 18 Boundary 18s Boundary start point 18e Boundary end point 12s Joined portion 12t Non-joined portion 12j1 to 12j20 Outer peripheral edge 120 Rubberized cloth 121 Thickened rubber 122 Body surface 124 Flap surface 126i Inner layer rubber 126o Outer layer rubber 127 Sheet-like release agent adhesive draw cloth 128 Sheet-like release agent f1 Left first flap surface f2 Right first flap surface g1 Left second flap surface g2 Right second flap Flap surface of f1a First flap surface constituent part f1b First flap surface constituent part f1c First flap surface constituent part f a 1st flap surface forming part f2b 1st flap surface forming part f2c 1st flap surface forming part g1c 2nd flap surface forming part g1d 2nd flap surface forming part g1e 2nd flap surface forming part g2c 2nd flap surface forming part g2d Second flap surface constituent part g2e Second flap surface constituent part m1 to m4 Folded line n1 to n4 Folded line X11 Intersection X21 Intersection X12 Intersection X22 Intersection X33 Intersection X43 Intersection X34 Intersection X44 Intersection a First main body surface b Third main body surface c Main body surface d Fourth main body surface e Fifth main body surface 140 Opening member 140a Opening 140b Bolt hole 141 Stud bolts 1421, 1422, 1423 Opening member reinforcement 143 Outflow pipe 143a Outflow pipe flange 143a1 Ring-shaped protrusion 200 Fixing belt 202 Rubberized cloth for thickening 300 Mold 30 f frame 310 rough top sheet

Claims (7)

A main body part that is molded into a bag shape using a bag body forming sheet, and that forms a space for accommodating fluid inside the bag body facing the bag body, and outward from the main body part A undulating gate bag comprising a extending flap portion and a boundary formed at a boundary between the main body portion and the flap portion,
The bag forming sheet is formed of one rubberized cloth, or is formed by overlapping a plurality of rubberized cloths,
The point on the bag forming sheet to be the start point or end point of the boundary is separated from the outer peripheral edge of the bag forming sheet,
The main body is formed by folding and / or curving the bag forming sheet,
The flap gate bag according to claim 1, wherein the flap portion is folded and / or curved at a boundary so as to cover the main body portion, and is vulcanized and bonded to the main body portion to seal the main body portion. The main body part is provided with a metal opening member to which the vulcanized adhesive is applied, which serves as an inlet / outlet of the fluid flowing into the main body part,
The undulating gate bag according to claim 1, wherein the vulcanization adhesive and the undulating gate bag are simultaneously vulcanized to integrate the opening member and the undulating gate bag. . Of the main surface of the sheet for forming the bag body, a sheet-like release agent bonding fabric is provided on the inner surface of the main body,
The undulating gate bag according to claim 1, wherein a sheet-like release agent is provided on the sheet-like release agent bonding fabric. A step of preparing a bag forming sheet formed of one rubberized cloth or a bag forming sheet formed by overlapping a plurality of rubberized cloths;
A step of forming a main body part that folds and / or curves the bag forming sheet so as to oppose the bag forming sheet and form a space for accommodating a fluid therein;
The flap portion extending outward from the boundary with the main body portion is separated from the outer peripheral edge of the bag forming sheet by the point on the bag forming sheet that should be the start point or the end point of the boundary. Folding and / or curving so as to cover the main body at such a boundary, and overlapping the flap on the main body,
A step of vulcanizing a bag body for an undulating gate that is molded into a bag shape using the bag body forming sheet and includes the main body portion and the flap portion;
Including
The method for producing a bag body for an undulating gate, wherein the main body is sealed. A step of providing a sheet-like release agent bonding fabric on the portion of the main surface of the bag forming sheet that is the inner surface of the undulating gate bag;
Providing a sheet-like mold release agent on the sheet-like mold release agent bonding fabric;
A step of providing a metal opening member to which the vulcanized adhesive is applied as an inlet / outlet of a fluid flowing into the main body portion in the main body portion;
The manufacturing method of the bag body for undulation gates of Claim 4 which further contains these.   It is a manufacturing method of the bag body for undulation gates of Claim 4 or Claim 5, Comprising: When vulcanizing the bag body for undulation gates using a press vulcanizer, it is the direction of a press by a press vulcanizer, A method for manufacturing a bag body for undulation gates, wherein a mold having a frame for preventing deformation of the bag body for undulation gates in a direction orthogonal or intersecting is used, and the bag body for undulation gates is vulcanized. . The main body includes a first main body surface, a second main body surface connected to the first main body surface, a third main body surface connected to the second main body surface opposite to the first main body surface, and the first main body surface. A fourth main body surface connected to the third main body surface opposite to the second main body surface; and a fifth main body surface connected to the fourth main body surface opposite to the third main body surface;
The flap portion includes a pair of first flap surfaces that are connected so as to sandwich a portion where the first body surface, the second body surface, and the third body surface are not connected to each other, a third body surface, and a fourth body surface. A pair of second flap surfaces connected so as to sandwich a portion where the main body surface and the fifth main body surface are not connected to each other,
The step of forming the main body part includes:
Folding the first body surface to the second body surface;
Folding the second main body surface on which the first flap surface and the first main body surface are placed on the third main body surface;
Folding the third main body surface on which the first flap surface, the first main body surface and the second main body surface are placed, onto the fourth main body surface;
Folding the fifth main body surface to the fourth main body surface on which the first flap surface, the second flap surface, the first main body surface, the second main body surface, and the third main body surface are placed; Including
The step of stacking the flap part on the main body part,
Folding the first flap surface onto the second body surface on which the first body surface is placed;
And folding the second flap surface onto the fourth body surface on which the first flap surface, the first body surface, the second body surface, and the third body surface are placed. The manufacturing method of the bag for undulating gates in any one of Claim 6 thru | or 6.

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