JP2896602B2 - 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 base material used when applying a coating agent to an outer peripheral surface of a flexible tubular base material and drying the coating agent. Here, the flexible tubular substrate refers to a tubular material having a weak stiffness, such as a tubular woven fabric, a tubular woven fabric, or a tubular soft plastic film.

[Prior art]

Conventionally, a coating and drying apparatus performs coating and drying on one surface of a belt-shaped substrate, and cannot perform coating and drying on the outer peripheral surface of a flexible tubular substrate.

Therefore, when manufacturing a tubular product having an outer surface coated on the basis of a flexible substrate, an application agent is applied to one surface of the strip-shaped flexible substrate and dried. Then, the longitudinal edges of the obtained strip-shaped material are joined together by sewing or bonding to form a tubular shape, and a coating product is applied to the joint portion as required and dried to obtain a tubular product. However, the manufacturing method has a drawback in that the manufacturing cost is increased due to the need for joining time, and furthermore, since the flexibility is different between the joined portion and the non-joined portion, it is possible to obtain a cylindrical product uniformly as a whole. I couldn't. An object of the present invention is to provide an apparatus for manufacturing a flexible tubular base material capable of applying and drying a coating agent on the outer peripheral surface of a flexible tubular base material in order to solve the above-mentioned problems.

[Means for Solving the Problems]

The means adopted by the apparatus for manufacturing a flexible tubular base material according to the present invention (hereinafter, referred to as “the present invention apparatus”) forms a tubular passage for a flexible tubular base material that is long in the vertical direction. Inside the cylindrical passage, a guide rod, a back-up device and a ventilation cylinder are arranged in order from top to bottom in a connected state, and the guide rod is divided into an upper stock area and a lower stock area. At a height above the stock area and outside the cylindrical passage,
A detachable upper chuck device for chucking the guide rod is provided, and a detachable lower chuck for chucking the guide rod at a height between the upper stock area and the lower stock area and outside the cylindrical passage. A check device is provided, and an upper check device and a lower check device can be alternately attached and detached.An application device is provided outside the back-up device, and a drying device through which a cylindrical passage penetrates outside the ventilation tube. The receiving port of the air passage provided in the guide bar and the back-up device is opened above the guide bar, and the outlet of the air passage is opened inside the ventilation tube.

[Operation]

When the upper chuck device is removed, the flexible tubular base material can be externally inserted into the upper stock area of the guide rod. When the upper chuck device is put on and the lower chuck device is put off, the flexible tubular substrate can be moved from the upper stock area to the lower stock area. While the flexible tubular substrate is guided from the lower stock area to the back-up tool and passes through the back-up tool, the coating material is applied to the surface of the base material by the applicator. The applied coating film is dried by a drying device while the flexible tubular substrate passes outside the ventilation tube. The air passage guides the air to the inside of the ventilation tube when static pressure air is appropriately supplied to the receiving port. The ventilation tube discharges the guided air into the cylindrical passage, and forms a positive static pressure air layer between the outer peripheral surface of the ventilation tube and the inner peripheral surface of the flexible cylindrical substrate. This air layer supports the flexible tubular substrate,
The contact between the ventilation tube and the flexible tubular substrate is prevented.

【Example】

Hereinafter, the device of the present invention will be described based on the embodiment shown in FIGS. As shown in FIG. 1, the apparatus 1 of the present invention forms a vertically long tubular passage R for a flexible tubular substrate, and guides the inside of the tubular passage R from top to bottom in order. The rod 2, the back-up device 5, and the ventilation tube 7 are arranged in a connected state. In the apparatus 1 of the present invention, an upper chuck device 3, a lower chuck device 4, a coating device 6, and a drying device 8 are arranged outside the cylindrical passage R in order from top to bottom. The guide rod 2 is made of a light alloy material or a lightweight material such as a fiber reinforced plastic material, and is formed in a rod shape.
The cylindrical passage R formed on the outer peripheral side is divided into an upper stock area R1 and an upper stock area R2. The guide rod 2 has portions to be hooked 2a and 2b formed above the upper stock area R1 and between the upper stock area R1 and the lower stock area R2. An upper chuck device 3 and a lower chuck device 4 for chucking the to-be-checked portions 2a, 2b are chuck claws which are advanced and retracted by operating tools 3b and 4b such as air cylinders.
A plurality of sets 3a and 4a are provided. Lower stock area R2
Is divided into an upper region R2-2 and a lower region R2-3 by a joining region R2-1. On the outer peripheral side of the joint area R2-1, the joint area 2
A substrate joining device 9 made of an overlock sewing machine or the like moving around -1 is provided. Below the joining area R2-1, an overfeed device 10 including a plurality of pressure rolls 10a is provided. This overfeed device 10
Can be applied to the flexible tubular base material B, which has been joined, in the upper region R2-
2 to the lower region R2-3, and quickly move to the upper region R2-2.
Next, a new flexible tubular base material B can be guided. As shown in FIGS. 1 and 2, a transfer device 12 provided with two sets of roll units 11 composed of a combination of a driving roll 11a and a pressurized roll 11b is disposed below the lower region R2-3. I have. The transfer device 12 is configured to carry out the flexible tubular base material B stocked in a bellows shape in the lower region R2-3 to the lower back-up device 5 at a predetermined speed. As shown in FIGS. 1 and 3, the back-up device 5 has a core rod 14 removably connected 13 to the lower end of the guide rod 2.
An annular guide 15 inserted into the step 14a of the core rod 14, and the step 1
A nut 16 for holding the annular guide 15 with the lower surface 14b of 4a is provided. The annular guide 15 is formed of an elastic material such as silicone rubber having a small sliding resistance, and by adjusting the clamping pressure of the nut 16, the maximum outer diameter of the back-up surface 15a formed of a barrel-shaped outer surface (that is, a cylindrical shape). The inner diameter of the passage R can be adjusted. By adjusting the maximum outer diameter of the back-up surface 15a, the back-up device 5 can adjust the circumferential tension of the flexible tubular base material B passing through the back-up surface 15a to an optimum value for coating. The annular guide 15 is formed of a metal material into an appropriate shape such as a barrel shape, and a plurality of annular guides 15 having different maximum outer diameters of the back-up surface 15a are prepared to correspond to the diameter of the flexible cylindrical base material B. It is also possible to exchange. When the annular guide 15 is formed of a metal material, it is preferable to improve the abrasion resistance by finishing the back-up surface 15a with chrome. An air passage 30 is formed in the guide rod 2 and the core rod 14 of the back-up device 5 in the vertical direction. In the air passage 30, receiving ports 30a, 30a are opened in the to-be-chuck portions 2a, 2b of the guide rod 2, and a check valve 31 is disposed near each receiving port 30a. The check valve 31 prevents backflow from the air passage 30 to the receiving port 30a. Upper chuck device 3 and lower chuck device 4
Each of the above-mentioned receiving ports 30a in the right place of the check nail 3a (4a).
A supply port 32a of the blower 32 which can be connected to a is opened, and the air supply 30 is supplied from the blower 32 to the air passage 30 by connecting the supply port 32a and the receiving port 30a when the check claw 3a (4a) is in a wearing state. It is like that. The air passage 30 has a discharge port 30b opened at the lower end thereof inside the ventilation tube 7 described later. As shown in FIG. 3, the coating device 6 includes an annular base 18 fixedly arranged outside the back-up device 5 and an annular coating device 17 attached to the annular base 18 and having a circular opening peripheral portion 17a in the center. It has. When the annular applicator 17 is formed by an annular blade having a spring characteristic, the applicator 6 is of a blade coat type, and when the annular applicator 17 is formed by an annular knife having a large rigidity, it is of a knife coat type. Coating agent Ca can be applied. Although not shown, the coating device 6 is a spray-coating system that sprays a low-viscosity coating agent toward the outer peripheral surface Ba of the flexible tubular base material B guided by the back-up surface 15a of the back-up device 5. It is also possible to employ such a method, and it is also possible to partially coat the outer peripheral surface Ba of the flexible tubular base material B. As shown in FIGS. 1 and 3, the ventilation tube 7 is formed in a tubular shape from a ventilation material such as a perforated plate having ventilation holes 7a, 7a,. Consolidation 19
At the same time, a guide 20 is attached to the lower end. Ventilation cylinder 7
A cylindrical passage R is formed from the back-up tool 5 to the guide tool 20 outside the front side. The ventilation tube 7 is connected to the air passage 30.
When air at an appropriate static pressure is supplied from the discharge port 30b, air is guided from the ventilation holes 7a, 7a,... To the cylindrical passage R, and the flexible cylindrical base material B passing through the cylindrical passage R Outer peripheral surface 7c of ventilation tube 7
To form a positive static pressure air layer F. In the drying device 8, as shown in FIGS. 1 and 4, the ventilation tube 7 penetrates in the vertical direction at the center. Drying device 8
A hot air generator 21 including a fan 21a, a heater 21b, and the like built in the main body box 24, and a discharge side of the hot air generator 21 that is disposed so as to surround the ventilation tube 7.
It comprises a plenum chamber 22 communicating with 21c, and a suction chamber 23 arranged outside the plenum chamber 22 and communicating with the suction side 21d of the hot air generator 21. Plenum room 22
In the figure, a plurality of annular nozzles 22a for blowing hot air toward the cylindrical passage R are opened on the inner peripheral side. In addition, plenum room 22
Transmits the hot air blown out from the annular nozzle 22a to the suction chamber 23.
A plurality of return passages 25 are provided to lead the air to the drain. Body box 24
Is provided with an exhaust passage 26 in an appropriate place. The drying device 8
Is not limited to the hot-air drying method.
Depending on the optimal drying characteristics (see FIG. 3), an infrared drying method or a drying method using both hot air and infrared light can be used. Although not shown, a cooling device that blows cool air toward the cylindrical passage R may be provided below the drying device 8. Below the guide 8 of the ventilation tube 7 (see FIG. 1),
A drawer 28 is provided. The drawing device 28 includes a driving roll 28a and a pressure roll 28b, and the two rolls 28a and 28b are used to flatten the coated and dried flexible tubular base material B that has passed through the tubular passage R. It is pulled out while nipping. The drawer device 28 is driven by constant tension control based on the transport speed of the drive roll 11a of the transport device 12,
The tension of the flexible tubular base material B passing through the back-up device 5 and the drying device 8 is kept constant. Above the back-up device 5, a tension detector 29 of a touch roll type or the like for constant tension control is provided. Next, the operation procedure of the device 1 of the present invention will be described. First, as shown in FIG. 1, the check claws 3a, 3 of the upper check device 3 are used.
a is retracted to remove the cartridge, and the cartridge 33 is loaded above the guide rod 2. The cartridge 33 is formed by fitting a flexible tubular base material B having an appropriate length in a bellows shape. The flexible tubular base material B of the cartridge 33 is forcibly moved downward and inserted into the upper stock area R1 of the guide rod 2 so as to be fitted outside.
Next, the chucks 3a, 3a,... Of the upper chuck device 3 are advanced to be put on, and then the lower chuck device 4 is removed.
It moves from R1 to the lower area R2-2 of the lower stock area R2. In the same manner as described above, the flexible tubular base material B is moved to the upper region R2-1 of the lower stock region R2 while maintaining the bellows shape. Then, the end portions of the flexible tubular substrates B, B stocked in the upper region R2-1 and the lower region R2-2 of the lower stock region R2 are joined by the substrate joining device 9. The loading of the flexible tubular substrate B and the joining of the ends are performed in the lower region R2-2 of the lower stock region R2.
Then, the flexible tubular base material is formed so that B always stocks. The flexible tubular base material B stocked in the lower region R2-2 is guided in advance to the drawer device 28 at the lower end thereof, and is carried into the back-up device 5 by the transfer device 12 at a set speed. As shown in FIG. 3, the coating material Ca is applied to the base material surface Ba by the coating device 6 while the flexible tubular base material B passes over the backup guide surface 15a. Coating film on outer surface Ba
As shown in FIG. 1, the flexible tubular substrate B coated with Cb
It passes through a cylindrical passage R formed outside the ventilation tube 7. At the time of this passage, the flexible tubular base material B
Therefore, the air passes through the drying device 8 while maintaining the cylindrical shape without contact with the ventilation tube 7 because the air layer F is supported by the positive static pressure air layer F formed therebetween. When the coating film Cb is a waterproof film or the like, the air layer F has a static pressure that does not break through the coating film Cb. The drying device 8 blows out hot air of an appropriate temperature supplied from the hot air generating device 21 from each annular nozzle 23a toward the coating film Cb (see FIG. 4), and the hot air of the flexible tubular base material B passing therethrough is discharged. The coating film Cb is dried. The dried flexible tubular base material B is guided to the drawing device 28 and carried out to the next step.

【The invention's effect】

As described in detail above, the device of the present invention has the following excellent effects. By alternately attaching and detaching the upper chuck device and the lower chuck device, the guide rod can be supported,
A fixed length of flexible tubular base material can be successively carried into the lower stock area. Since the back-up device is connected to the supported guide rod, it can be supported in a stable state. As a result, the device of the present invention can apply the coating agent to the entire outer circumference or a part of the flexible tubular base material with a uniform thickness. Since the flexible cylindrical substrate coated with the coating film on the outer peripheral surface is supported by the air layer formed on the outer periphery of the ventilation cylinder, the flexible cylindrical substrate is formed in the annular passage for the substrate in the drying device while maintaining the cylindrical shape. pass.
As a result, the apparatus of the present invention can uniformly dry the coating agent applied to the outer peripheral surface of the flexible tubular substrate. The device of the present invention can also produce a flexible tubular base material in which a coating agent is uniformly applied and dried on the entire outer periphery, so that it is possible to provide a new material for a secondary product and to develop a new product. Can be promoted.

[Brief description of the drawings]

All the drawings show an embodiment of the apparatus of the present invention, FIG. 1 is a longitudinal sectional view showing the whole, and FIG. 2 is II in FIG.
FIG. 3 is an enlarged cross-sectional view showing the relationship between the back-up device and the annular coating device, taken along line II,
FIG. 4 is a cross-sectional view of the drying apparatus taken along the line IV-IV in FIG. 2 ... guide rod, 3 ... upper chuck device 4 ... lower chuck device, 5 ... back-up tool 6 ... coating device, 7 ... ventilation cylinder 8 ... drying device, 30 ... air passage 30a ... receiving Mouth, 30b ... discharge port R ... cylindrical passage R1 ... upper stock area, R2 ... lower stock area

Claims (1)

(57) [Claims] 1. A tubular passage for a flexible tubular base material that is long in the vertical direction is formed, and a guide rod, a back-up device, and a ventilation cylinder are connected to the inside of the tubular passage in order from top to bottom. The guide rod is divided into an upper stock area and a lower stock area, and the guide rod is chucked at a height above the upper stock area of the guide rod and outside the cylindrical passage. A free upper chuck device is disposed, and a detachable lower chuck device for fixing the guide bar by a chuck is disposed at a height between the upper stock region and the lower stock region and outside the cylindrical passage. The upper chuck device and the lower chuck device can be alternately attached and detached, an application device is provided outside the back-up device, and a drying device through which a cylindrical passage penetrates is provided outside the ventilation tube. And air provided in the back-up device Apparatus for manufacturing a flexible tubular substrate outlet of the air passage, characterized in that an opening to the interior of the air cylinder while opening the receiving opening of the road over the guide rod.