JPH093859A - Production of flexible membrane weir - Google Patents

Abstract

PURPOSE: To make accurate the manufacturing works of a flexible membrane weir and reduce an auxiliary material used in common as a measure against an inferior appearance, by making a continuously long protective layer sheet and laminating it on a non-cured main body. CONSTITUTION: When a sheet 7 for a non-vulcanized protective layer is produced, the lower side rubber sheet 5 having 1300mm wide, 4mm thick, and 10 mm long dimensions is fed continuously from the right side in the drawing to the left side to pass through a small container and a scattering device 14 so that ceramic fragments 4 processed with an adhesive, having about 5mm long and about 2.8mm diameter columnar shape, are piled and scattered thin Further, the upper side non-vulcanized rubber sheet 6 with the same size is put on the lower side non-vulcanized rubber sheet 5 to synchronize with the above process and the upper and lower faces are heated at about 60 deg. through a preheater 12 and then pressed by a roller 13 to bury the small fragments between the upper and lower non-vulcanized rubber sheets 5, 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bag-like flexible structure which stands up by injecting a fluid to form a weir across a river, and when the fluid is discharged, the weir falls to free the flow of the river. The present invention relates to a method for manufacturing a membrane weir. In particular, the present invention relates to a method for manufacturing a flexible dam film having a protective layer so that the flexible film dam is not artificially damaged.

[0002]

2. Description of the Related Art Flexible membrane weirs can be expanded and contracted freely for irrigation,
Widely used for water intakes for industrial water, industrial weirs, estuary weirs for backflow prevention, sand protection, wave protection, and diversion / flow control gates for sewage, reservoirs, reservoirs, etc. . However,
The flexible membrane weir may be artificially damaged by a sharp object such as a knife. Therefore, use a rubber sheet protective layer with many small pieces of ceramics etc. as the outer layer of the flexible membrane weir. Therefore, it is preferable to prevent such damage from occurring.

However, for example, Japanese Unexamined Patent Publication No. 4-330111.
In, in a short sheet of unvulcanized rubber, a large number of small pieces of ceramics are thinly deposited and scattered, and then the small pieces of ceramics are buried by a non-vulcanizing press die to obtain a short-length rubber sheet for a protective layer in an unvulcanized state. Then, this was sequentially attached to the unvulcanized flexible membrane weir body.

[0004]

However, the conventional short rubber sheet for a protective layer and its manufacturing method have the following problems. That is, (1) Since it is short, it takes a lot of man-hours to attach it to the flexible membrane dam main body. (2) In addition, since the number of joints is large, it is necessary to deal with product defects and appearance defects, which requires preparation of auxiliary materials (unvulcanized sheet rubber, tools, etc.) and extra man-hours.
(3) Since it is a short protective layer sheet, it takes time because a large number of sheets have to be prepared especially in the case of a large flexible membrane weir. The present invention has been made as a result of studying to solve such problems of the prior art, and an object of the present invention is to use a continuous long protective layer rubber sheet, The rubber sheet for the protective layer is applied to the main body of the flexible membrane weir in an unvulcanized state with a small number of steps.
The purpose is to reduce the use of auxiliary materials to prevent appearance defects and to attach them with a small number of parts.

[0005]

The present invention adopts the following constitution in order to achieve the above object. That is,
In a method for manufacturing a flexible membrane weir having a protective layer that is installed across a river or the like, stands up by injecting a fluid such as water or air, and falls down by discharging, (1) A rubber adhesive is applied to the surface A member having corrosion resistance and cut resistance, for example, a step of continuously dispersing a large number of small pieces such as ceramics and aluminum on the lower unvulcanized rubber sheet substantially uniformly.
(2) Further, in synchronism with the above step, the upper unvulcanized rubber sheet is continuously laminated on the lower unvulcanized rubber sheet, preliminarily heated to a predetermined temperature, and then continuously pressed. A step of burying the small pieces between the lower unvulcanized rubber sheet and the upper unvulcanized rubber sheet to produce an unvulcanized protective layer sheet, and A step of forming the unvulcanized flexible membrane dam laminate by laminating the rubber sheet for the protective layer on the unvulcanized body as much as possible, and (4) integrally vulcanizing the laminated body with a vulcanizing press. Process to turn into. It adopts a configuration consisting of and.

Here, the shape of the small piece of ceramics or the like may be a sphere, a cylinder or a prism, and may be any shape as long as it can be manufactured. Regarding the size, there is no problem in terms of manufacturing and performance that the sizes are somewhat uneven, but the width (diameter) is preferably 1.5 to 3 mm, and the length is preferably 3 to 5 mm, and particularly Diameter 2.8 mm, length 5
The thing of about mm does not lose the flexibility of the entire flexible membrane weir,
It is also preferable because it has excellent damage resistance.

[0007]

According to the structure of the method for manufacturing a flexible membrane weir of the present invention,
Small pieces of corrosion-resistant and break-resistant material such as ceramics are continuously and substantially evenly distributed on the lower unvulcanized rubber sheet, and the upper unvulcanized rubber sheet is laminated in synchronization with it, After preliminarily heating to the temperature of 1, the small piece is embedded between the lower unvulcanized rubber sheet and the upper unvulcanized rubber sheet with a pressure roller. At this time, since each member is heated to a predetermined temperature in advance, the small piece can be easily and surely buried. Then, the protective layer sheet thus produced is continuously wound around a roll with a length of about 10 m. At this time, it is desirable to use a liner such as polyester or cloth between the sheets so that the sheets do not adhere to each other.

Then, the protective layer sheet is unwound from the roll or cut into a predetermined length and laminated on the unvulcanized main body portion as the main body of the flexible membrane weir. At this time, since the protective layer sheet is long, the number of joints is small, and therefore the work can be performed accurately and quickly, and the repair of the joints after lamination is also small, which is still efficient.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 5 is an example showing a flexible membrane weir constructed by the manufacturing method of the present invention. The flexible membrane weir is installed in the transverse direction of the riverbed of a river and is in a standing state by injecting a fluid (injection part is not shown). It comprises a fixed anchor to the riverbed 1, a main body 2 of the flexible membrane weir, and a protective layer 3. The main body is reinforced with two layers of canvas, but if more strength is required, it is better to have three or more layers.

FIG. 1 shows an unvulcanized protective layer sheet 7 of the present invention.
FIG. 5 is a diagram for explaining the manufacturing method of, in which 5 is 1300 m wide
m, thickness 4 mm, length 10 m, which is a lower rubber sheet continuously fed from the left side to the right side in the figure, and passing through the small piece container and the scattering device 14, the length on the sheet is 5 mm, Small pieces 4 of columnar adhesive-treated ceramics having a diameter of 2.8 mm are scattered while being thinly deposited. Further, in synchronization with the above process, an upper unvulcanized rubber sheet 6 of the same size is covered on the lower unvulcanized rubber sheet 5, and a preheater 12 is passed through to heat the upper and lower surfaces to 60 ° C. Then, the small piece is embedded between the lower unvulcanized rubber sheet and the upper unvulcanized rubber sheet as shown in FIG. Here, the preheater may use, for example, far infrared rays or an ordinary electric heater, but if the surface of the rubber is heated to a vulcanized state, the adhesion cannot be removed in the next integration step. Not preferable.

FIG. 2 shows a step of producing an unvulcanized flexible membrane weir by laminating an unvulcanized main body 10 and an unvulcanized protective layer sheet 7, and in this case, protection is performed. Since the layered sheet is long, the number of joints is reduced and the layers can be efficiently laminated. Then, the protective layer sheet may be cut into a predetermined length in advance or unwound from a roll for use. After that, vulcanization is integrated by a vulcanizing press to obtain a product.

[0012]

As is apparent from the above description, according to the present invention, a long protective layer sheet is continuously prepared and laminated on the unvulcanized main body. Since the flexible membrane weir for vulcanization is manufactured, the joint portion is reduced, and the work can be performed accurately and quickly, and the repair of the joint portion is reduced.

[Brief description of drawings]

FIG. 1 is a schematic view showing an example of the present invention, in which small pieces are continuously scattered on a lower unvulcanized sheet, and then an upper unvulcanized sheet is laminated and heated to a predetermined temperature, It shows that a sheet for an unvulcanized protective layer is produced by pressure bonding with a pressure roller.

FIG. 2 is a schematic view showing an example of the present invention, showing that an unvulcanized flexible barrier membrane is formed by laminating an unvulcanized protective layer sheet on an unvulcanized body.

FIG. 3 is a cross-sectional view showing an unvulcanized protective layer sheet according to an example of the present invention.

FIG. 4 is a sectional view showing a flexible membrane weir according to an embodiment of the present invention.

FIG. 5 is a cross-sectional view showing a standing state of a weir constructed using the manufactured flexible membrane weir.

[Explanation of symbols]

 R Flexible membrane weir 1 Riverbed 2 Body part of flexible membrane weir 3 Protective layer 4 Small pieces (ceramics) 5 Lower rubber sheet 6 Upper rubber sheet 7 Unvulcanized protective layer sheet 8 Canvas layer 9 Rubber layer 10 Not Vulcanized main body 11 Unvulcanized flexible membrane weir 12 Preheater 13 Crimping roller 14 Small piece container and scattering device

Claims (1)

[Claims] 1. A flexible membrane weir that is installed across a river or the like, stands up by injecting a fluid such as water or air, and falls down by discharging, (1) Corrosion resistance in which a rubber adhesive is applied to the surface Of a plurality of small pieces of a flexible and cut-resistant member continuously and substantially evenly distributed on the lower unvulcanized rubber sheet, (2) Further, in synchronization with the above step, the upper unvulcanized rubber sheet is unvulcanized. A rubber sheet is continuously laminated on the lower unvulcanized rubber sheet, and after heating to a predetermined temperature, the small pieces of the lower unvulcanized rubber sheet and upper unvulcanized rubber sheet are bonded using a pressure roller. A step of manufacturing the unvulcanized protective layer sheet by burying the unvulcanized protective layer sheet, and (3) stacking the unvulcanized protective layer sheet on the unvulcanized body as much as possible to form the flexible membrane weir body. A step of forming a vulcanized flexible membrane weir, (4) for vulcanizing the unvulcanized flexible membrane weir Method for producing a flexible membrane weir, characterized the step of integrating vulcanized at less, in that it consists of.