JPH0659448B2 - Flexible tubular substrate manufacturing equipment - Google Patents

Description

Detailed Description of the Invention [Industrial applications]

TECHNICAL FIELD The present invention relates to an apparatus for manufacturing a flexible tubular substrate used when applying a coating agent on the entire outer circumference of a flexible tubular substrate and drying the coating. Here, the flexible tubular base material refers to a tubular material having a weak stiffness such as a cloth woven in a tubular shape, a cloth knitted in a tubular shape, or a soft plastic film formed in a tubular shape.

[Prior art]

Conventionally, a coating / drying device coats and dries one surface of a strip-shaped substrate, and cannot coat and dry the entire outer peripheral surface of a flexible tubular substrate.

[Problems to be Solved by the Invention]

Therefore, in the case of manufacturing a cylindrical product with a flexible base as an outer surface coating, the coating agent is applied to one side of the strip-shaped flexible base and dried, and the long-side length of the strip-shaped raw material is obtained. The edges are joined together by stitching or adhesion to form a tubular shape, and a coating agent is applied to the jointed portion as necessary to dry the resulting tubular product.
However, the above-mentioned manufacturing method has a drawback that the manufacturing cost is increased because the labor for bonding is required. Further, since flexibility is different between the bonded portion and the non-bonded portion, it is possible to obtain a tubular product which is uniform throughout. I couldn't do it. In order to solve the above problems, an object of the present invention is to provide an apparatus for manufacturing a flexible tubular substrate, which can uniformly apply and dry the coating agent on the entire outer circumference of the flexible tubular substrate. To do.

[Means for Solving the Problems]

The first means adopted by the apparatus for manufacturing a flexible tubular substrate according to the present invention (hereinafter referred to as "the apparatus of the present invention") is a substrate having an annular cross section as shown in Figs. 1 to 3. The material-provided annular passage R is extended in the vertical direction, and a back-up tool 2 having a guide surface 9 formed along the base-material annular passage R is disposed inside the base-material annular passage R, and the back-up tool 2 is provided. The guide surface 9 of the upper diameter guide surface area 9a and the small diameter guide surface area 9b extending below the large diameter guide surface area 9a, and the outside of the small diameter guide surface area 9b of the back up tool 2. By fixedly disposing the annular coating device 4 having the opening peripheral edge portion 4c having a diameter smaller than that of the large-diameter guide surface area 9a of the back-up tool 2, the small-diameter guide surface area 9b of the back-up tool 2 is formed in the annular passage R for the substrate. Is supported by the opening peripheral edge portion 4c of the annular coating device 4 through the above, and below the back-up tool 2 and in the annular passage R for the base material. An inner peripheral surface that contacts the annular passage R for the base material is formed inside, and a lower guide tool 3 connected to the back up tool 2 is disposed. Between the back up tool 2 and the lower guide tool 3, the annular base material is provided. That is, the drying device 5 through which the passage R penetrates is arranged. The second means adopted by the device of the present invention is, as shown in FIG. 4 and FIG. 5, that a base material annular passage R having an annular cross section is extended in the vertical direction, and the base material annular passage R A pair of flat passage surface areas Ra, Ra that face each other and approach each other as they go downward.
Is formed on the outside of the pair of flat passage surface areas Ra, Ra,
A pair of support guides 23, 23 provided with a plurality of horizontal guide rolls 23b in contact with the flat passage surface area Ra are fixedly arranged, and each support guide is provided inside the pair of flat passage surfaces Ra, Ra.
By disposing the stationary guide 22 having the guide roll 22b facing the 23 guide rolls 23b,
22 is supported by a pair of support guides 23, 23 via a pair of flat passage surface areas Ra, Ra, and below the stationary guide 22 and inside the base material annular passage R, the base material annular passage R is provided. A back-up tool 2 which is connected to the stationary guide 22 and which forms an outer peripheral surface in contact with the back-up tool 2 is provided, and an annular coating device 4 is provided outside the back-up tool 2 and is provided below the back-up tool 2 and for the base material. Inside the annular passage R, there is provided a lower guide tool 3 (see FIG. 1) which is connected to the back up tool 2 by forming an outer peripheral surface in contact with the base material annular path R, and the back up tool 2 is provided.
The drying device 5 through which the base material annular passage R penetrates is disposed between the lower guide tool 3 and the lower guide tool 3.

[Action]

As to the first means, as shown in FIGS. 1 to 3,
When the flexible tubular base material B is conveyed to the base material annular passage R,
The back-up tool 2 is located inside the flexible tubular base material B. The back-up tool 2 is stopped at a predetermined height position because the small-diameter guide surface area 9b is supported by the opening peripheral edge portion 4c of the annular coating device 4 via the flexible tubular base material B being conveyed. The coating agent Ca supplied to the annular coating device 4 bites between the entire outer peripheral surface of the flexible tubular substrate B being conveyed while being guided by the back-up tool 2 and the opening peripheral edge portion 4c of the annular coating device 4, It is applied as a film on the outer peripheral surface Ba. The flexible tubular base material B having the coating film Cb formed on the entire outer circumference is the lower guide 3
Therefore, the coating film Cb is dried while passing through the base material annular passage R of the drying device 5 while maintaining the tubular shape. As to the second means, as shown in FIGS. 4 and 5,
When the flexible tubular base material B is conveyed to the base material annular passage R,
The stationary guide 22 and the back-up tool 2 are located inside the flexible tubular base material B. This stationary guide 22 is
Of the guide rolls 22b, 22b provided on the support guide 23 via the flexible tubular base material B being conveyed,
Since it is supported by 23b ..., it stops at a predetermined height. Further, since the back-up tool 2 is connected to the stationary guide 22, it stops at a predetermined height position. The annular coating device 4 is
When the coating agent Ca is supplied, the coating agent Ca is applied to the entire outer peripheral surface of the flexible cylindrical base material B being conveyed while being guided by the back-up tool 2. Since the flexible tubular base material B having the coating film Cb formed on the outer peripheral surface Ba is guided by the lower guide 3 (see FIG. 1), the base in the drying device 5 is maintained while maintaining the tubular shape. The coating film Cb is dried while passing through the material annular passage R.

【Example】

Hereinafter, the device of the present invention will be described based on an embodiment shown in the drawings. (First Embodiment) FIGS. 1 to 3 show a device 1 of the present invention according to a first embodiment. As shown in FIG. 1, the device 1 of the present invention comprises a base material annular passage R extending vertically toward the center, a back-up tool 2 arranged inside the base material annular passage R, and an upper part. A lower guide tool 3 arranged on the inner lower side of the material annular passage R, an annular coating device 4 attached to the back up tool 2, and a drying device 5 arranged between the back up tool 2 and the lower guide tool 3. Is equipped with. The base material annular passage R is formed between the guide roll 6 at the upper end and the drawing roll unit 7 at the lower end, and the passage has an annular cross section. The pull-out roll unit 7 at the lower end consists of a drive roll 7a and a nip roll 7b,
The flexible tubular base material B, which has been applied and dried and has passed through the base material annular passage R, is pulled out at a set speed V while nipping with both rolls 7a and 7b so as to be flat. If necessary, a widening member 8 is provided inside the upper end of the base material annular passage R. This expanding tool 8 includes a supporting rod 8a erected from the lower buckup tool 2, a branch rod 8b extending from the supporting rod 8a, and guide rolls 8c and 8d attached to the upper ends of the branch rod 8b and the supporting rod 8a. The flat base material B ′ guided by the upper end guide roll 6 is smoothly expanded into an annular cross section. As shown in FIG. 2, the back-up tool 2 is formed in a bowl shape from a light alloy material or the like, and has a boss portion for joining at the center thereof.
It has 2a. On the outer surface of the back-up tool 2, a guide surface 9 in contact with the base material annular passage R is provided with a large diameter guide surface area 9a in the shape of an upper short cylinder and a spherical surface extending below the large diameter guide surface area 9a. And a small diameter guide surface area 9b. Guideway 9
Has a chrome finish to improve wear resistance. The lower guide tool 3 (see FIG. 1) is formed of a light alloy material or the like into a spherical shape or a bowl shape, and is connected to the boss portion 2a of the back up tool 2 via a connecting rod 10. The annular applicator 4 includes an annular base 4a fixedly arranged outside the backup device 2 and an annular applicator 4b attached to the annular base 4a. In the annular applicator 4b, the opening peripheral edge 4c is formed to have a smaller diameter than the large-diameter guide surface area 9a of the back-up tool 2.
The small diameter guide surface area 9b of the back-up tool 2 is supported. The annular applicator 4 is a blade coating system when the annular applicator 4b is formed by an annular blade having a spring characteristic, and is a knife coat system when the annular applicator 4b is formed by a rigid annular knife. A coating agent can be applied. As shown in FIGS. 1 and 2, the drying device 5 has a main body box 14 in which an annular passage R for a base material penetrates in a central upper and lower direction.
And a hot air generator 11 including a fan 11a and a heater 11b built in the main body box 14, and a discharge side 11 of the hot air generator 11.
The main duct 12 communicating with c, a plurality of annular ducts 13 branched from the main duct 12, and the suction side of the hot air generator 11.
It is composed of a return path 15 communicating with 11d. The annular duct 13 is provided with an annular nozzle 13a for ejecting hot air toward the base material annular passage R and an annular guide plate 13b for guiding the hot air. Body box 14 has an exhaust passage in place
16 is provided. The drying device 5 is not limited to the hot air drying method, and may be an infrared drying method or a drying method using both hot air and infrared rays depending on the optimum drying characteristics of the coating film Cb (see FIG. 2). It is possible. Although not shown, a cooling device may be disposed below the drying device 5 to blow cold air toward the base material annular passage R. Next, the operation procedure of the device 1 of the present invention will be described. First, the starting end of the flexible base material B ′ fed from the gadroll 6 at the upper end is opened, and the expanding tool 8, the back-up tool 2, the connecting rod 10 and the lower guide tool 3 are sequentially placed in the opened starting end. Insert and
Nip the start end into the drawer roll unit 7. Next, the driving roll 7a of the pull-out roll unit 7 is driven to feed the coating agent Ca to the annular coating device 4 while the flexible tubular substrate B is being conveyed through the substrate annular passage R at an appropriate speed. . At this time, the back-up tool 2 is, as shown in FIG.
The small-diameter guide surface area 9b is supported by the opening peripheral edge portion 4c of the annular coating device 4 via the flexible tubular base material B being conveyed, and stops at a predetermined height position. Coating material Ca supplied to the annular coating device 4
Is the outer peripheral surface Ba of the flexible tubular base material B being conveyed while being guided by the back-up tool 2 and the peripheral edge portion of the opening of the annular coating device 4.
It is bitten between 4a and is applied as a film-like Cb on the outer peripheral surface Ba by a blade coating method or a knife coating method.
Flexible tubular base material B having the outer peripheral surface Ba coated with the coating film Cb
Since it is guided by the lower guide 3 as shown in FIG. 1, it passes through the base material annular passage R in the drying device 5 while maintaining its tubular shape. The drying device 5 blows out the hot air of the appropriate temperature supplied from the hot air generator 11 from each annular nozzle 13a toward the coating film Cb (see FIG. 3), and the flexible tubular base material B passing The coating film Cb is dried. The dried flexible tubular base material B is guided to the drawing roll unit 7 and carried out to the next step. (Second Embodiment) FIG. 4 and FIG. 5 show the upper side of the backup tool 2 in the device 21 of the present invention of the second embodiment. Although not shown below the back-up tool 2 of the device 21 of the present invention, the drying device 5, the lower guide 3 (see FIG. 1) and the drawer roll unit 7 described in the first embodiment are shown.
Is provided. The device 21 of the present invention is characterized in that the back-up tool 2 is connected to an upper stationary guide 22 by a connecting rod 24, and the stationary guide 22 is supported by a supporting guide 23 via a flexible tubular base material B being conveyed. That is the point that we supported in 23. The stationary guide 22 is disposed inside the base material annular passage R and faces a part of the base material annular passage R, and a pair of downward enlarged flat passage surface areas Ra that are close to each other as they go downward. , Ra
And a pair of lower narrow flat passage surface areas Rb, Rb which face each other and are separated as they go downward. Stationary guide 22
Is a main body 22a made of a material such as light alloy or FRP
And a plurality of horizontal guide rolls 22b pivotally supported by the main body 22a and contacting each downward expanded flat passage surface area Ra. The stationary guide 22 has lower narrow flat passage surface areas Rb, Rb formed on the side surfaces 22c, 22c (see FIG. 4) of the main body 22a on which the guide roll 22b is not disposed. The support guide 23 includes main bodies 23a, 23a fixedly arranged on the outer side of each downward enlarged flat passage surface area Ra, and each main body 23.
and a plurality of guide rolls 23b opposed to the guide rolls 22b of the stationary guide 22 and pivotally supported by a. The guide rolls 23b, 23b ...
It is also possible to control the tension of the flexible tubular base material B between itself and the pull-down roll unit 7 (see FIG. 1) below by forcibly driving. A plurality of guide rolls 25 are arranged outside the large-diameter guide surface area 9a of the back-up tool 2. This guide roll 25
Is to prevent the back-up tool 2 from swinging. The annular coater 4 can adopt the same blade Cotto method or knife coat method as in the first embodiment,
It is possible to adjust the film thickness of the coating agent film Cb by adjusting the gap between the opening peripheral edge portion 4c of the annular coating device 4 and the small diameter guide surface 9b of the back-up tool 2 by the vertical position adjusting device 26.
Since the back-up tool 2 is supported by the support guides 23, 23 via the stationary guide 22, it is not necessary to support it by the annular coating device 4 unlike the first embodiment. for that reason,
Although not shown in the drawing, the annular coating device 4 may employ a spray coat method or the like in which a low-viscosity coating agent is sprayed toward the outer peripheral surface Ba of the flexible tubular base material B. It is also possible to partially coat the outer peripheral surface Ba of the flexible tubular base material B. Next, an operation procedure of the device 21 of the present invention will be described. First, the starting end portion of the flexible base material B ′ fed from the upper guide rail 6 is opened, and the stationary guide 22, the back-up tool 2, the connecting rod 10, and the lower guide tool 3 (first (Refer to the figure) and insert the pull-out roll unit at the start end 7
(See Fig. 1). Next, the coating material Ca is supplied to the annular coating device 4 while the flexible tubular base material B is being conveyed through the base material annular passage R at an appropriate speed. Ring coating device 4
Applies the supplied coating agent Ca onto the outer peripheral surface Ba of the flexible tubular base material B in the form of a film Cb by a blade coating method or a knife coating method. The flexible tubular substrate B having the outer peripheral surface Ba coated with the coating film Cb is dried while passing through the drying device 5 as in the first embodiment. (Other Investigations) The device 1 (21) of the present invention is capable of producing a flexible tubular base material in which a coating agent is uniformly applied and dried on the entire outer circumference, which has been conventionally impossible to produce. It becomes possible to provide materials for secondary products. For example, on the entire outer circumference of a flexible tubular base material woven into a tubular fabric by polyamide fiber such as nylon, other araside fiber, polyester fiber, or the like,
Elastomers such as chloroprene rubber and fluorine resin for imparting air-proof, heat-resistant and flame-retardant functions are applied and dried by the device 1 (21) of the present invention to produce a long tubular base fabric for air backing. can do. The manufactured tubular air backing base cloth is cut into an appropriate length, and as shown in FIG. 6 (A), a gas passage opening for connecting to the inflator 34 or the like.
31a is formed in a proper position and is formed on the air bag bag 31 whose both ends are closed by tightening rings 33, 33 or sutures (not shown), or as shown in FIG. And the other end is formed into an air bag bag body 32 closed at the other end with a tightening ring 33 or suture. The air bag bag 31 (32) is extremely easily formed into a bag by closing both ends or one end, so that an inexpensive air bag can be provided.

【The invention's effect】

As described in detail above, the device of the present invention has the following excellent effects. The annular coating device is arranged on the outer peripheral side of the back-up tool that stops at a predetermined height position. As a result, the device of the present invention can uniformly apply the coating agent to the entire outer peripheral surface of the flexible tubular substrate. The flexible tubular base material having the outer peripheral surface coated with the coating film is guided by the downward guiding tool, and therefore passes through the base material annular passage in the drying device while maintaining the tubular shape. As a result, the device of the present invention can uniformly dry the coating agent applied to the entire outer peripheral surface of the flexible tubular substrate. INDUSTRIAL APPLICABILITY The device of the present invention can provide a novel material for secondary products because it can produce a flexible tubular substrate in which a coating agent is uniformly applied and dried on the entire outer circumference, which has been impossible to produce conventionally. It is possible and can accelerate the development of new products.

[Brief description of drawings]

1 to 3 show a first embodiment of the device of the present invention. FIG. 1 is a vertical sectional view showing the whole, and FIG. 2 is an enlarged view showing the relationship between the back-up tool and the annular coating device. Cross section,
FIG. 3 is a cross-sectional view of the drying device taken along the line III-III in FIG. FIGS. 4 and 5 show the essential parts of a second embodiment of the device of the present invention. FIG. 4 is a perspective view showing the upper side of the back-up tool, and FIG. 5 is V-V of FIG. It is an expanded longitudinal cross-sectional view in a line. FIGS. 6 (A) and 6 (B) are cross-sectional views showing an air bag bag manufactured using the flexible tubular base material manufactured by the device of the present invention. 2 …… Back up tool, 3 …… Lower guide tool 4 …… Circular coating device, 5 …… Drying device 9 …… Guide surface, 9a …… Large diameter guide surface area 9b …… Small diameter guide surface area, 22 …… Stationary Guide 23 …… Supporting guide B …… Flexible tubular base material, R …… Substrate annular passage Ra …… Flat passage surface area

Claims (2)

[Claims] 1. A base material annular passage (R) having an annular cross section extending vertically, and a guide along the base material annular passage (R) inside the base material annular passage (R). A back-up tool (2) having a surface (9) is provided, and the guide surface (9) of the back-up tool (2) is located above the large-diameter guide surface area (9a) and the large-diameter guide surface area (9a). And a small diameter guide surface area (9b) extending below the back surface of the small diameter guide surface area (9b) of the back up tool (2).
By fixing the annular coating device (4) having the opening peripheral edge portion (4c) having a smaller diameter than the large diameter guide surface area (9a) of (2), the small diameter guide surface area ( 9b) is supported by the opening peripheral edge portion (4c) of the annular coating device (4) through the base material annular passage (R), and is below the back-up tool (2) and the base material annular passage (R). A lower guide tool (3), which is connected to the back up tool (2) by forming an outer peripheral surface in contact with the annular passage (R) for the base material, is provided inside the lower guide tool (2) and the lower guide tool.
(3) Drying device where the base material annular passage (R) penetrates
An apparatus for manufacturing a flexible tubular substrate, characterized in that (5) is provided. 2. An annular passage (R) for a base material having an annular cross section is extended in the up-down direction, and a part of the annular passage (R) for a base material is faced with and approached downwardly. A pair of flat passage areas (Ra, R
a), and outside the pair of flat passage areas (Ra, Ra), a horizontal guide roll (23) contacting the flat passage area (Ra) is formed.
A pair of support guides (23, 23) provided with a plurality of b) are fixedly arranged, and the guide rolls (23b) of each support guide (23) are provided inside the pair of flat passage surfaces (Ra, Ra). By disposing a stationary guide (22) provided with a guide roll (22b) facing the stationary guide (22), the stationary guide (22) is provided with a pair of support guides (23) via a pair of flat passage surface areas (Ra, Ra). , 23), below the stationary guide (22) and inside the base material annular passage (R),
A back-up tool (2) connected to the stationary guide (22) by forming an outer peripheral surface in contact with the base material annular passage (R) is provided, and an annular coating device (4) is provided outside the back-up tool (2). Is disposed below the back-up tool (2) and in the annular passage for the base material.
Inside the (R), a lower guide tool (3) is provided which is connected to the back up tool (2) by forming an outer peripheral surface in contact with the base material annular passage (R). An apparatus for manufacturing a flexible tubular base material, characterized in that a drying device (5) through which the base material annular passage (R) penetrates is disposed between the guide tool (3).