JPH07119059B2 - Method and apparatus for coating the peripheral surface of tubular cloth with synthetic resin - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for coating a peripheral surface of a tubular cloth with a synthetic resin and a processing apparatus suitable for carrying out this method.

[0002]

2. Description of the Related Art As a method of coating a resin on the inner circumference and the outer circumference of a tubular cloth, the tubular cloth is put into a raw material tub filled with a resin solution, and after the tubular cloth is pulled out from the bottom of the raw material tub, heat treatment and A method of performing cooling treatment or a method of performing only cooling treatment is known. However, it is necessary to keep the coating thickness of the resin on the tubular cloth constant, and it is desired to freely adjust the coating thickness according to the type of product. Furthermore, when only the cooling treatment is performed, it is necessary to enhance the bondability between the resin and the tubular cloth. In addition, Japanese Examined Japanese Patent Publication Sho 63-5
Japanese Patent No. 2573 discloses a method and a device in which a tubular cloth is passed through the outer periphery of a mandrel suspended from above and the outer surface of the tubular cloth is coated with a resin. Only the resin is coated only on the inner surface, and the inner surface is coated with the resin.

[0003]

Therefore, according to the present invention, the coating thickness of the resin on the tubular cloth can be kept constant,
Furthermore, it is an object of the present invention to provide a method by which the coating can be performed not only on the outer surface but also on the inner surface of the tubular cloth. Another object of the present invention is to provide an apparatus suitable for carrying out the above method.

[0004]

The present invention solves the above problems by the following method of coating the peripheral surface of a tubular cloth with a synthetic resin. The first method for coating the peripheral surface of the tubular cloth of the present invention with the synthetic resin is to insert the mandrel into the resin coating chamber by suspending it from above and passing the uncoated resinous cloth from above to the outer periphery of the mandrel. , The upper part of the resin coating chamber is provided with an inflow chamber for receiving the resin supplied from the resin supply body, the mandrel is inserted in the center of the inflow chamber, and the outer diameter of the mandrel in the inflow chamber is set to be smaller than the inner diameter of the tubular cloth. By setting it thin, a space is formed between the outer circumference of the mandrel and the inner circumference of the tubular cloth, and the resin that has flowed into the inflow chamber is introduced from the outer circumference of the tubular cloth into the space through the cloth tissue of the tubular cloth, and the resin coating is performed. An outer diameter defining portion having an inner diameter substantially the same as the target outer diameter of the coated tubular cloth is provided in the lower part of the resin coating chamber, while an inner diameter defining portion having an outer diameter substantially the same as the target inner diameter of the resin coated tubular cloth. On the mandrel and pass the tubular cloth between the inner diameter defining portion and the outer diameter defining portion. It makes it way to coat the synthetic resin on the peripheral surface of the tubular fabric for the synthetic resin on the inner and outer surfaces of the tubular fabric, characterized in that to coat a predetermined thickness.

Further, the second method of the present invention provides the above-mentioned first method having the following characteristics.
That is, the resin coating chamber is composed of the above-mentioned inflow chamber having an upper surface and a bottom surface and a bottom portion provided below the inflow chamber, and the upper position setting portion is on the upper surface of the inflow chamber and the lower position setting portion is on the bottom surface of the inflow chamber. Respectively, and the mandrel is inserted into the upper and lower position setting parts, and the first and second positioning parts are provided in the mandrel at positions corresponding to the upper and lower position setting parts. A tubular cloth is inserted between the lower position setting portion and the first and second positioning portions of the mandrel, and an outer peripheral passage communicating with the bottom of the resin coating chamber is formed on the bottom surface of the inflow chamber to form Part of the resin is guided from the outside of the tubular cloth toward the bottom of the resin coating chamber, and the outside diameter defining portion is provided at the bottom of the resin coating chamber.

Next, the present invention solves the above problems by the following apparatus for coating the peripheral surface of a tubular cloth with a synthetic resin. A first device for coating a synthetic resin on a peripheral surface of a tubular cloth according to the present invention includes a mandrel through which the tubular cloth is passed, and a resin coating chamber which is inserted while the mandrel is suspended from above. The resin coating chamber is coated on the inside and outside of the tubular cloth in the resin coating chamber, a resin supply body for supplying the resin to the inside thereof, a passage for guiding the resin supplied to the resin coating chamber from the outer peripheral side to the tubular cloth. A thickness determining portion that determines the thickness of the resin, the passage includes an inflow chamber communicating with the resin supply body,
The mandrel penetrates the center of the inflow chamber, and the outer diameter of the mandrel in the inflow chamber is set to be smaller than the inner diameter of the tubular cloth, thereby forming a space between the outer circumference of the mandrel and the inner circumference of the tubular cloth. The resin that has flowed into the inflow chamber is configured to enter the space through the tubular cloth, and the thickness determining portion has an inner diameter defining portion having an outer diameter substantially the same as the target inner diameter of the resin-coated tubular cloth. And an outer diameter defining portion having an inner diameter substantially the same as the intended outer diameter of the resin-coated tubular cloth, the outer diameter defining portion being provided below the outer peripheral passage and the inner peripheral passage of the resin coating chamber, An apparatus for coating the peripheral surface of a tubular cloth with a synthetic resin, in which the defining portion is arranged in a position corresponding to the outer diameter defining portion of the mandrel.

Further, a second device of the present invention provides the above-mentioned first device having the following characteristics.
That is, the resin coating chamber has the above-mentioned inflow chamber having an upper surface and a bottom surface, and a bottom portion provided below the inflow chamber, and an upper position setting portion on the upper surface of the inflow chamber and a lower hook position setting on the bottom surface of the inflow chamber. And the mandrel is inserted into the upper and lower position setting parts, and the mandrel has first and second positioning parts at positions corresponding to the upper and lower position setting parts. In addition, a tubular cloth is inserted between the upper and lower position setting portions and the first and second positioning portions of the mandrel, and a part of the resin in the inflow chamber is introduced into the bottom surface of the inflow chamber from the outside of the tubular cloth. An outer peripheral passage that leads toward the bottom of the coating chamber is formed, and the thickness determining portion is provided at the bottom of the resin coating chamber. In the present invention, the tubular cloth means any fiber or thread (for example, polypropylene thread, HP.
P. A tubular cloth knitted or woven with E thread, polyester thread, nylon thread or other synthetic fiber thread, cotton thread or other natural thread).

[0008]

In the present invention, the tubular cloth is defined as the mandrel and accurately descends in the resin coating chamber. During this descent, the tubular cloth is coated on its inner and outer surfaces with the resin supplied into the resin coating chamber. An inner diameter defining portion having an outer diameter substantially the same as the target inner diameter of the resin-coated tubular cloth is provided at the bottom of the resin coating chamber, and also has an inner diameter substantially the same as the target outer diameter of the resin-coated tubular cloth. Since the outer diameter defining portion is provided on the mandrel, by inserting a resin-coated tubular cloth between the inner diameter defining portion and the outer diameter defining portion, the inner and outer surfaces of the tubular cloth are coated with the synthetic resin to a predetermined thickness. Can be made.

Further, an upper position setting portion is provided on the upper surface of the inflow chamber,
A lower position setting part is bored on the bottom surface of the inflow chamber, and a mandrel is inserted through the upper and lower position setting parts, and at the positions corresponding to the upper and lower position setting parts of the mandrel,
Positions of the mandrel and the tubular cloth in the inflow chamber by providing the first and second positioning parts and inserting the tubular cloth between the upper and lower position setting parts and the first and second positioning parts of the mandrel. Is more accurately determined, and the synthetic resin coating is performed better.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic diagram of an apparatus for coating a peripheral surface of a tubular cloth with resin. First, an outline of a coating apparatus and a coating method of the present invention will be described based on this figure. This device includes a first drum 11 that winds a tubular cloth a that is an object to be processed, a first guide roller 21 arranged above the first drum 11, and a first guide roller 21 arranged to the right of the first guide roller 21 in the figure. Driven type second guide roller 22, a suspension device 4 arranged below the second guide roller 22, a mandrel 6 suspended from the suspension device 4 via a suspension rod 5, and a mandrel 6 pass through. The resin coating chamber 8, the heating device 7 disposed below the resin coating chamber 8, the cooling device 10 disposed below the heating device 7, and the lower drive roller 23 disposed below the cooling device 10. And a third guide roller 24 arranged on the right side of the lower drive roller 23 in the figure, and a second drum 12 arranged on the right side of the third guide roller 24. The suspension device 4 includes a lower bearing 42 that is supported and fixed to a device body (not shown).
And the upper bearing 4 supported by the lower bearing 42
1 and a conical guide tube 3 mounted on the upper bearing 41. The suspension rod 5 has its upper end fixed to the center of the upper bearing 41. Resin coating room 8
The bottom portion 84 is supported and fixed to the apparatus main body (not shown), and the resin supply body 9 such as a screw pump or an extruder is connected to the side portion of the resin coating chamber 8. The tubular cloth a, which is the object to be processed, is crushed in the first drum 11
And is unwound from the first drum 11 in that state, and reaches above the main part of the apparatus by the first guide roller 21 and the drive-type second guide roller 22.

Next, the tubular cloth a which is the object to be processed is guided by the conical guide tube 3 mounted on the upper bearing 41 of the suspension device 4 and spreads from the crushed state to the original tubular shape. To be The tubular cloth a expanded in a tubular shape passes between the bearing ball 43 of the upper bearing 41 and the bearing ball 44 of the lower bearing, and the upper bearing 41
It is passed through a mandrel 6 connected to a suspension rod 5 connected to the center. While passing through the outer periphery of the mandrel 6 in the resin coating chamber 8, the tubular cloth a is impregnated and coated with the resin supplied from the resin supply body 9 on its inner and outer surfaces. The tubular cloth whose inner and outer surfaces have been impregnated and coated with the resin supplied from the resin supply body 9 is heated by the heating device 7, and then the tubular cloth a subjected to the heat treatment is jetted from the cooling device 10. It is forcibly cooled by the cooling water. It is also possible to perform natural cooling without using the cooling device 10. Finally, the cooled tubular cloth a is pulled out by the lower drive roller 23, guided by the third guide roller 24, and wound around the second drum 12, whereby the whole process is completed.

A preferred embodiment of the suspension device 4 will now be described in detail with reference to FIGS. As described above, the suspension device 4 includes the lower bearing 42 supported and fixed to the device body (not shown) and the upper bearing 41 supported by the lower bearing 42.

As shown in FIG. 4, the lower bearing 42 is formed by arranging a large number of bearing balls 44 in a circumferential shape, and an inner peripheral surface 46 thereof is a tapered surface whose inner diameter becomes smaller as it goes downward. . The entire lower bearing 42 is fixed to the apparatus main body (not shown) by the flange 47.

On the other hand, the upper bearing 41 is formed by arranging a large number of bearing balls 43 in a circumferential shape as shown in FIG. 3, and an outer peripheral surface 45 thereof is a tapered surface whose outer diameter becomes smaller as it goes downward. ing. The suspension rod 5 extends vertically through the center of the upper bearing 41, and its upper end is fixed to the upper surface of the upper bearing 41 by a fixing nut 48. Further, the guide tube 3 is attached to the upper end of the suspension rod 5.

The upper bearing 41 is mounted on the lower bearing 42 such that the bearing balls 43 are located between the bearing balls 44 of the lower bearing 42. The tubular cloth a is the bearing ball 4 of the upper bearing 41.
3 and the bearing ball 44 of the lower bearing 42, toward the mandrel 6 attached to the lower end of the suspension rod 5. Therefore, this suspension device is
The mandrel 6 is attached to the lower end of the suspension rod 5 connected to the above, and the upper bearing 41 is supported by the lower bearing 42 fixed to the device body (not shown), so that the mandrel 6 can be reliably suspended. At the same time, the tubular cloth a can be smoothly fed.

Next, another preferred embodiment of the suspension device 4 will be described in detail with reference to FIGS. 5 to 7.
This suspension device is configured to feed a tubular cloth a having a relatively large diameter more smoothly. That is, in the above example, the upper bearing 41 is strongly pulled downward. Examples of the downward force include the weight of the mandrel 6 attached via the suspension rod 5 and the downward force due to the resin coating process performed when passing through the mandrel 6. If the downward force is too large, it may be difficult to smoothly feed the tubular cloth a. This embodiment solves this problem.

As described above, the suspension device includes the lower roller 52 supported and fixed to the apparatus body (not shown) and the upper roller 51 supported by the lower roller 52. The lower roller 52 has four lower roller bodies 54 arranged in a square shape as shown in FIG. 7, and the shafts of the respective lower roller bodies 54 are connected so as to be interlocked by a bevel gear 56. Is rotated by a drive source 57 such as an electric motor by an appropriate connecting means such as a belt and a pulley.

On the other hand, the upper roller 51 is composed of four upper roller bodies 53 arranged in a substantially square shape by a square frame 55 as shown in FIG. And the suspension rod 5
Is fixed by a fixing nut 59 to the center of a downward inclined frame 58 extending obliquely downward from the four corners of the square frame 55. Further, the upper inclined frame 31 is extended obliquely upward from the four corners of the square frame 55,
This fulfills the same function as the above-mentioned guide tube.

The upper roller 51 is placed on the lower roller 52 in a state where each upper roller body 53 corresponds to each lower roller body 54. Then, the tubular cloth a passes between the upper roller main body 53 of the upper roller 51 and the lower roller main body 54 of the lower roller 43, and goes toward the mandrel 6 attached to the lower end of the suspension rod 5. At this time, since the four lower roller bodies 54 are rotated by the drive source 57 such as an electric motor, the lower roller 52 can forcibly feed the tubular cloth a. Therefore, this suspension device can allow the tubular cloth a to be smoothly fed even when the upper roller 51 is strongly pulled downward.

Next, an embodiment of the mandrel 6 and the resin coating chamber 8 will be described with reference to FIGS. First, the mandrel 6 has a connection portion 61 for the suspension rod 5 at the upper end,
The first positioning portion 62 is located below the first positioning portion 62 and the second positioning portion 62 is located further below
The positioning section 63 is provided, and the inner diameter defining section 64 is provided at the lower end.

The first and second positioning portions 62 and 63 are disc-shaped and have an outer diameter substantially equal to the inner diameter of the tubular cloth a. An exhaust hole 65 is formed in the first positioning portion 62 so as to penetrate in the vertical direction (FIG. 12). Further, as shown in FIG. 11, an inner peripheral passage 66 is formed in the second positioning portion 63 so as to penetrate in the vertical direction over substantially the entire area thereof. In this embodiment, the inner peripheral passage 66 is formed as two semi-circular holes, but a large number of small holes are formed over substantially the entire area of the second positioning portion 63, so that the resin flows well downward as described later. If so, the shape can be changed appropriately. The inner diameter defining portion 64 has a disk shape having an outer diameter substantially the same as the target inner diameter of the resin-coated tubular cloth a, as described later.

Next, the resin coating chamber 8 has an upper position setting portion 82 above the inflow chamber 81 and a lower position setting portion 8 below the upper position setting portion 82.
3 and further has a bottom portion 84 therebelow. Specifically, as shown in FIGS. 13 and 14, the lower position setting portion 83 is supported by the bottom portion 84 by the support bar 83a,
Further, the upper position setting portion 82 is supported above the lower position setting portion 83 by the support column 82a. The resin coating chamber 8 is supported and fixed to the apparatus main body (not shown) by the bottom portion 84.

The upper and lower position setting parts 82 and 83 are formed at positions corresponding to the first and second positioning parts 62 and 63 of the mandrel 6, respectively, and the first and second positioning parts 62 and 6 are formed.
In cooperation with 3, the mandrel 6 is suspended vertically. That is, the upper position setting part 82 has a circular hole for passing the first positioning part 62 of the mandrel 6, and this hole is the first hole.
It has an inner diameter substantially equal to the outer diameter of the tubular cloth a passing through the outer circumference of the positioning portion 62. Further, the lower position setting portion 83 has a circular hole for passing the second positioning portion 63 of the mandrel 6, and this hole has an inner diameter substantially equal to the outer diameter of the tubular cloth a passing through the outer periphery of the second positioning portion 63. Have. Therefore, the tubular cloth a is between the upper position setting portion 82 and the first positioning portion 62 of the mandrel 6,
It passes between the lower position setting part 83 and the second positioning part 63 of the mandrel 6 and descends vertically.

Next, the tip end of the resin supply body 9 is connected to the side portion of the resin coating chamber 8, and at the position below the connection portion of the tip end of the resin supply body 9 in the resin coating chamber 8, the An inflow chamber bottom surface 85 is formed from the inner peripheral surface toward the lower position setting portion 83. A space is provided between the inner end surface of the inflow chamber bottom surface 85 and the outer peripheral surface of the lower position setting portion 83, and this space serves as an outer peripheral passage 86. A part of the resin is configured to be guided from the outside of the tubular cloth a toward the bottom portion 84 of the resin coating chamber 8 through the outer peripheral passage 86.

In the bottom portion 84 of the resin coating chamber 8, a hole having an inner diameter substantially the same as the intended outer diameter of the resin-coated tubular cloth a is formed so as to penetrate in the vertical direction, as will be described later. This hole is an outer diameter defining portion 87, and the outer diameter defining portion 87 is provided at a position corresponding to the inner diameter defining portion 64 of the mandrel 6 described above.

In the resin coating chamber 8 having the above structure, the tubular cloth a is coated with the resin on its inner and outer surfaces as follows. First, the tubular cloth a is, as described above, between the upper position setting portion 82 and the first positioning portion 62 of the mandrel 6,
It passes through between the lower position setting portion 83 and the second positioning portion 63 of the mandrel 6 and descends vertically. On the other hand, the resin is supplied from the tip of the resin supply body 9 into the inflow chamber 81,
This resin fills the inside of the inflow chamber 81, and a part of the resin goes from the outer peripheral passage 86 to the lower side of the lower position setting portion 83 and is coated and impregnated on the outer surface of the tubular cloth a. On the other hand, the inflow chamber 8
The resin filled with 1 reaches the outer periphery of the tubular cloth a as it is,
The inner surface of the tubular cloth a permeates into the tubular cloth a through the weaves or stitches of the tubular cloth a, oozes out toward the inner peripheral side, and goes downward from the inner peripheral passage 66 formed in the second positioning portion 63 of the mandrel 6. Are coated and impregnated.

In this way, the inner and outer surfaces of the tubular cloth a are
The resin is coated and impregnated, but the coating thickness is determined by the distance between the outer diameter defining portion 87 of the bottom portion 84 of the resin coating chamber 8 and the inner diameter defining portion 64 of the mandrel 6. That is, the outer diameter defining portion 87 is a hole having an inner diameter substantially the same as the target outer diameter of the resin-coated tubular cloth a, and the inner diameter defining portion 64 is the target inner diameter of the resin-coated tubular cloth a. Since it is a disk having an inner diameter substantially the same as that of the resin-coated tubular cloth a
By passing through, the resin coating thickness of the inner and outer surfaces of the tubular cloth a is determined.

The resin coating thickness can also be adjusted by changing the unit time amount of the resin supplied from the resin supply body 9 to the resin coating chamber 8 and the feeding speed of the tubular cloth a. That is, the unit time of the resin is reduced,
By increasing the feed rate, the coating thickness of the resin becomes small, and conversely, the coating thickness becomes large. Further, in order to change the coating thickness greatly, the mandrel 6
Is changed to one in which the outer diameter of the inner diameter defining portion 64 is different,
Alternatively, the bottom portion 84 of the resin coating chamber 8 is provided with the outer diameter defining portion 87.
It may be changed to one having a different inner diameter. Further, various ring bodies having different diameters may be replaceably attached to the inner diameter defining portion 64, and the outer diameter defining portion 87 may be provided with a shutter whose opening can be adjusted.

Incidentally, in order to coat only the inner surface of the tubular cloth a with the resin, in the above embodiment, the outer peripheral passage 86 is closed, and the inner diameter of the outer diameter defining portion 87 is set to the outside of the tubular cloth a which is not coated with the resin. The diameter may be adjusted to be approximately the same. To close the outer peripheral passage 86, an on-off valve may be attached to close the valve, or parts may be replaced. On the other hand, in order to coat only the outer surface of the tubular cloth a with the resin, the mandrel 6 of the above-mentioned embodiment may be replaced with a cylindrical one having an outer diameter substantially equal to the inner diameter of the tubular cloth a. In the resin coating chamber 8, the tubular cloth a, the inner and outer surfaces of which are coated with resin, further descends and is subjected to heat treatment by the heating device 7.

An embodiment of the heating device 7 will be described with reference to FIGS. 17 to 19. Heating device 7 of this embodiment
Is a combination of a pair of left and right casings 71, 71 that face each other and can be opened and closed. A tubular cloth a (not shown in FIGS. 12 to 14) is provided in the center between the casings 71, 71.
A space 72 for inserting the through hole is formed. A plurality of heating elements 73 are attached to each casing 71 in the horizontal direction and a plurality of stages in the vertical direction. Each stage has a temperature controller 74
Is arranged to control the heating element 73 by sensing the internal temperature.
Then, between the respective steps, a spell 74 is formed to suppress the upper movement of heat.

The heating device 7 has a small internal volume for holding heat and can be heated from room temperature to 300 ° C. very easily and in a single hour. The heat treatment can be freely adjusted by adjusting the temperature by the temperature adjusting device 74 and adjusting the feed rate of the tubular cloth a according to the type of the tubular cloth a. In this heat treatment, the tubular cloth a
A cylindrical body (not shown) having an outer diameter substantially equal to the target inner diameter of is hung from the end of the mandrel 6 so that the tubular cloth a is passed through the outer circumference of the cylindrical body while the heating device 7 is inserted. Good. Accordingly, the tubular cloth a is regulated by the cylindrical body even during the heat treatment, so that the inner diameter thereof is further stabilized. Further, the cylindrical body may be changed to an appropriate shape that can define the inner diameter, such as a ladder body in which a large number of horizontal rods are arranged between two vertical rods.

[0032]

As described above, according to the first aspect of the present invention, at least one of the inner and outer surfaces of the tubular cloth can be continuously and smoothly coated with the synthetic resin, and the coating thickness of the resin on the tubular cloth can be reduced. It is possible to provide a method for coating the peripheral surface of a tubular cloth with a synthetic resin, which can be kept constant. Further, the invention according to claim 2 can provide a method for realizing a better coating of the resin on the tubular cloth. In the invention according to claim 3, at least one of the inner and outer surfaces of the tubular cloth can be continuously and smoothly coated with the synthetic resin,
Moreover, it is possible to provide a device for coating the peripheral surface of the tubular cloth with the synthetic resin, which can keep the coating thickness of the resin on the tubular cloth constant. Further, the invention according to claim 4 can provide an apparatus for realizing better resin coating on the tubular cloth. As described above, the tubular cloth having the peripheral surface coated with the synthetic resin, which is obtained by carrying out the present invention, is used for various hoses used for transferring various fluids such as water, air, and oil, and granular materials, and packaging bags. By further incising the tubular cloth vertically, the thick one can be used as an industrial belt, and the thin one can be used as an artificial leather, and the present invention can be applied to a wide range of applications. A method and an apparatus for coating a synthetic resin on the above can be provided.

[Brief description of drawings]

FIG. 1 is a schematic view of an apparatus for coating a peripheral surface of a tubular cloth with a synthetic resin according to an embodiment.

FIG. 2 is a cross-sectional view of a suspension device in the same device.

FIG. 3 is a plan view of an upper bearing of the suspension device.

FIG. 4 is a plan view of a lower bearing of the suspension device.

FIG. 5 is a cross-sectional view of another embodiment of the suspension device.

FIG. 6 is a plan view of an upper roller of the suspension device.

FIG. 7 is a plan view of a lower roller of the suspension device.

FIG. 8 is a plan view of a resin coating chamber.

FIG. 9 is an explanatory diagram of an internal structure of the resin coating chamber.

10 is an enlarged view of a main part of FIG.

11 is a plan view of the XI portion of FIG. 9. FIG.

12 is a sectional view taken along line XII-XII in FIG.

FIG. 13 is a plan view of the bottom of the resin coating chamber.

14 is a central vertical cross-sectional view of FIG.

FIG. 15 is a plan view of an inflow chamber of the resin coating chamber.

16 is a vertical cross-sectional view of FIG.

FIG. 17 is a plan view of the heating device.

FIG. 18 is a side view of the same.

FIG. 19 is a side view taken along line XX of FIG.

[Explanation of symbols]

4 ... Suspension device, 5 ... Suspension rod, 6, ... Mandrel, 7 ... Heating device, 8 ... Resin coating chamber, 9 ... Resin supply body, 63 ... Inner peripheral passage, 64 ... Inner diameter defining portion, 83 ... Outer peripheral passage, 84 ... bottom of resin coating chamber, 87 ... outer diameter defining portion, a ... tubular cloth.

Claims (4)

[Claims] 1. A mandrel is suspended from above and inserted into a resin coating chamber, a tubular cloth not coated with resin is passed from above to the outer periphery of the mandrel, and resin is supplied to the upper part of the resin coating chamber from a resin supplier. The inflow chamber for receiving the mandrel is inserted, and the mandrel is inserted in the center of the inflow chamber. A space is formed between the resin and the resin, and the resin that has flowed into the inflow chamber is allowed to enter the space from the outer periphery of the tubular cloth through the cloth structure of the tubular cloth, and has an inner diameter approximately the same as the target outer diameter of the resin-coated tubular cloth. An outer diameter defining portion is provided in the lower part of the resin coating chamber, while an inner diameter defining portion having an outer diameter substantially the same as the target inner diameter of the resin-coated tubular cloth is provided on the mandrel, and the tubular cloth is used as the inner diameter defining portion. Synthetic resin is applied to the inner and outer surfaces of the tubular cloth by passing it between the outer diameter regulation part. Method for coating a synthetic resin on the peripheral surface of the tubular fabric, characterized in that to coat the Teiatsumi. 2. The resin coating chamber comprises the above-mentioned inflow chamber having an upper surface and a bottom surface, and a bottom portion provided below the inflow chamber, and an upper position setting portion on the upper surface of the inflow chamber and a lower portion on the bottom surface of the inflow chamber. The position setting part is provided respectively, and the mandrel is inserted into the upper and lower position setting parts, and the first and second positioning parts are provided at positions corresponding to the upper and lower position setting parts in the mandrel, Also, the upper and lower position setting parts and the first mandrel
The tubular cloth is inserted between the second positioning portion and the second positioning portion, and an outer peripheral passage communicating with the bottom of the resin coating chamber is formed on the bottom surface of the inflow chamber so that a part of the resin in the inflow chamber The method for coating a synthetic resin on a peripheral surface of a tubular cloth according to claim 1, wherein the outer diameter defining portion is provided at the bottom of the resin coating chamber. 3. A resin coating chamber is provided, which has a mandrel through which the tubular cloth is passed, and a resin coating chamber which is inserted in a state where the mandrel is suspended from above. The resin coating chamber supplies resin to the inside thereof. A supply body, a passage for guiding the resin supplied to the resin coating chamber from the outer peripheral side to the tubular cloth, and a thickness determining portion for determining the thickness of the resin coated on the inner and outer surfaces of the tubular cloth in the resin coating chamber, Is provided with an inflow chamber communicating with the resin supply body, and the mandrel penetrates through the center of the inflow chamber, and the outer diameter of the mandrel in the inflow chamber is set to be smaller than the inner diameter of the tubular cloth, so that the outer circumference of the mandrel is reduced. And a space is formed between the inner circumference of the tubular cloth and the resin that has flowed into the inflow chamber and enters the space through the tubular cloth. An inner diameter defining portion with an outer diameter that is approximately the same as the inner diameter, and An outer diameter defining portion having an inner diameter substantially the same as the intended outer diameter of the oil-coated tubular cloth, the outer diameter defining portion being provided below the outer peripheral passage and the inner peripheral passage of the resin coating chamber, and the inner diameter defining portion. A device for coating the peripheral surface of the tubular cloth with a synthetic resin, which is positioned in a position corresponding to the outer diameter defining portion of the mandrel. 4. The resin coating chamber has the above-mentioned inflow chamber having a top surface and a bottom surface, and a bottom portion provided below the inflow chamber, and an upper position setting portion on the inflow chamber upper surface and a lower portion on the inflow chamber bottom surface. The position setting parts are respectively drilled, the mandrel is inserted into the upper and lower position setting parts, and the mandrel has first and second positioning parts at positions corresponding to the upper and lower position setting parts. In addition, a tubular cloth is inserted between the upper and lower position setting portions and the first and second positioning portions of the mandrel, and a part of the resin in the inflow chamber is attached to the bottom surface of the inflow chamber from the outside of the tubular cloth. An outer peripheral passage that leads to the bottom of the resin coating chamber is formed, and the thickness fixing portion is provided at the bottom of the resin coating chamber, and the peripheral surface of the tubular cloth is coated with synthetic resin. A device that lets you.