JPH06102338B2 - Heat treatment equipment for flexible tubular substrates - Google Patents

Description

TECHNICAL FIELD The present invention relates to a heat treatment apparatus for heat treatment of a flexible tubular substrate. Here, the flexible tubular base material means a tubular woven cloth, a tubular woven cloth, a tubular plastic material such as a soft plastic film or the like, or a tubular article having a weak waist. It means a product obtained by applying a coating agent and drying it. Further, the heat treatment refers to a treatment for heat-setting fibers forming a tubular cloth, accelerating a crosslinking reaction of a coating agent, accelerating vulcanization of a rubber-based coating agent, or the like.

[Conventional technology]

Conventionally, the heat treatment for a flexible base material is intended for a base material that is spread in a strip shape. Therefore, in the case of heat-treating the flexible tubular base material, there is nothing but the heat treatment in the state where the tubular base material is flatly adhered and folded over.

[Problems to be Solved by the Invention]

However, when the tubular substrate is heat-treated by closely stacking and folding it into a flat shape, the heat treatment status is different between the central region that spreads in a plane and the bent side edge regions. Therefore, conventionally, it has been impossible to perform uniform heat treatment on the entire area of the flexible tubular base material in the cylinder circumferential direction.

In order to solve the above problems, the present invention aims to provide a heat treatment device for a flexible tubular substrate, which can perform uniform heat treatment over the entire region of the flexible tubular substrate in the circumferential direction. To do.

[Means for Solving the Problems]

The first means adopted by the present invention is to form a tubular passage for a flexible tubular substrate on the outer peripheral side of the guide tool, and near both ends of the stock area formed on the carry-in side of the tubular passage. A removable chuck device for fixing the guide to the chuck is provided, and the guide is provided with an air passage that connects the inlet opening on the carry-in side of the guide and the discharge opening opened on the carry-out side of the guide. A heat treatment device for a flexible tubular substrate, wherein an extension passage for the flexible tubular substrate extending from the carry-out side of the tool is formed to pass through the heating chamber.

The second means adopted by the present invention is the first means of the first aspect, wherein an applicator is arranged outside the guide tool and on the carry-out side of the stock area, and carried out outside the guide tool and from the applicator. That is, a drying device is provided on the side.

A third means adopted by the present invention is that, in the first or second means, a conveying roll is arranged in the heating guide and the extension passage is formed on the outer peripheral conveying surface side of the conveying roll.

A fourth means adopted by the present invention is that, in the third means, a suction hole is opened in an outer peripheral transport surface of the transport roll.

A fifth means adopted by the present invention is the first or second means, wherein a plurality of base material suspension rods are provided in the heating chamber with appropriate intervals between adjacent base material suspension rods. The extension passage is formed in a loop shape by a transfer device that moves from the indoor carry-in side to the indoor carry-out side.

A sixth means adopted by the present invention is that, in the fifth means, the base material hanging rod rotates on its axis.

A seventh means adopted by the present invention is that, in the fifth or sixth means, a suction hole is opened in the outer peripheral hanging surface of the base material hanging rod.

[Action]

According to the first to seventh means, when the guide device is in the detached state and the chuck device provided on the carry-out side is in the wearing state when viewed from the stock area, the guide device is in the stock area from the carry-in side. A flexible tubular base material can be externally inserted and inserted into. Further, the guide tool can move the flexible tubular substrate from the stock area of the guide rod to the unloading side by putting the chucking device on the loading side in the attached state and leaving the chucking device on the unloading side in the unloaded state. . When air is supplied to the inlet, the air passage of the guide tool discharges air from the outlet to the inside of the flexible tubular base material and expands the flexible tubular base material. The extension passage extending from the carry-out side of the guide tool guides the expanded flexible tubular substrate to pass through the heating chamber. The heating chamber heat-treats the flexible tubular base material passing in the expanded state uniformly over the entire area in the circumferential direction of the tube.

In the second means, the coating device coats the flexible tubular base material passing through the tubular passage of the guide tool with the coating agent. The drying device dries the coating agent applied to the flexible tubular base material passing through the tubular passage of the guide tool.

In the third means, the transport roll transports the flexible tubular substrate passing through the heating chamber.

According to the fourth means, the transport roll suctions and adheres the flexible tubular base material to the outer peripheral transport surface, and transports the flexible tubular base material without causing a slip.

In the fifth means, the base material suspension rod suspends the flexible tubular base material in a loop shape and conveys the flexible tubular base material from the carry-in side to the carry-out side in the heating chamber.

In the sixth means, the base material hanging rod is rotated to convey the flexible tubular base material while moving the contact position between the outer peripheral suspension surface and the flexible tubular base material. To do.

In the seventh means, the base material suspension rod is configured such that the flexible cylindrical base material is suction-adhered to the outer peripheral suspension surface, and the outer peripheral suspension surface and the flexible cylindrical base are formed without causing a slip. Move the contact position with the material.

〔Example〕

Hereinafter, a heat treatment apparatus according to the present invention (hereinafter, referred to as “invention apparatus”) will be described based on embodiments shown in the drawings.

(First Embodiment) FIG. 1 shows a first embodiment of the device of the present invention. As shown in FIG. 1, the heat treatment apparatus 1 includes a vertically elongated guide tool 2
And a detachable chuck device (3, 4) for fixing the guide tool (2) to the chuck and a heating device (5).

The guide tool 2 is formed in a rod-like shape with a light weight material such as a light alloy material or a fiber reinforced plastic material as a main material, and a cylindrical passage R is formed on the outer peripheral side. The guide tool 2 has a stock area R1 formed on the upper loading side and a stock area.
The chucked portions 2a and 2b are formed near the upper and lower ends of R1. The upper chuck device 3 and the lower chuck device 4 for fixing the chucked portions 2a, 2b are provided with a plurality of sets of chuck claws 3a and 4a which are moved forward and backward by an operating tool (not shown) including an air cylinder or the like. . The guide tool 2 is
An air passage 6 is provided in the vertical direction. In the air passage 6, the receiving ports 6a, 6b are opened in the chucked portions 2a, 2b of the guide tool 2, and check valves (not shown) are arranged in the vicinity of the respective receiving ports 6a. The check valve is for preventing backflow from the air passage 6 to the receiving port 6a. Each of the upper chuck device 3 and the lower chuck device 4 opens a supply port 7a of the blower 7 that can be connected to the receiving port 6a at an appropriate position of the chuck claw 3a (4a), and the chuck claw 3a (4a) is in a worn state. When, supply port 7a
Air is supplied from the blower 7 to the air passage 6 by making the receiving port 6a communicate with each other. The air passage 6 has a discharge port 6a at the lower end opened to the discharge side of the guide tool 2.

An applicator 8 is arranged outside the guide tool 2 and below the lower chuck device 4. The coating device 8 is the third
As shown in the figure, a back-up tool 9 made of rubber or the like fitted on the guide tool 2, an annular base portion 10 fixedly arranged outside the back-up tool 9, and a circular opening peripheral portion 11a attached to the annular base portion 10 and in the center thereof. And an annular applicator 11 which is opened. The applicator 8 adopts a blade coating method when the annular applicator 11 is formed by an annular blade having a spring characteristic, and a knife coat method when the annular applicator 11 is formed by an annular knife having a large rigidity. The coating agent Ca can be applied. In addition, the coating device 8
Although not shown in the figure, the 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 substrate B guided by the back-up surface 9a of the back-up tool 9 is adopted. Is also possible, and the outer peripheral surface of the flexible tubular base material B
It is also possible to partially coat Ba.

A drying device 12 is arranged below the coating device 8. As shown in FIGS. 4 and 5, the drying device 12 has the guide tool 2 penetrating vertically in the center thereof. Dryer 12
Is a main body box 13, a hot air generator 14 including a fan 14a and a heater 14b built in the main body box 13, and a hot air generator 1
4, a main duct 15 communicating with the discharge side 14c of 4, a plurality of annular ducts 16 branched from the main duct 15, and a hot air generator
It is composed of a return passage 17 communicating with the suction side 14d of the fourteen. The annular duct 16 has an annular nozzle 16a for ejecting hot air toward the tubular passage R and an annular guide plate 16b for guiding the hot air. The main body box 13 is provided with an exhaust passage 18 at an appropriate position. The drying device 12 is not limited to the hot air drying method, but the coating film Cb (see FIG. 3).
It is also possible to adopt an infrared drying method or a drying method using both hot air and infrared rays in accordance with the optimum drying characteristics of.

As shown in FIG. 1, the heating device 5 is formed so that an extension passage H for the flexible tubular substrate extending from the discharge side of the guide tool 2 passes through the heating chamber 31. . Extension passage H
Is formed by a conveying means 20 including a plurality of conveying rolls 21. As shown in FIG. 2, each transport roll 21 has a cylinder 22 and side plates 23, 24 attached to both ends of the cylinder 22.
And the roll shaft 25 penetrating the cylinder 22 and attached to the side plates 23 and 24, and the roll shaft 25 inside the cylinder 22 to pivot 27,2.
7 and a sealing member 26, and a part of the extension passage H is formed on the outer peripheral transport surface 22a side of the cylinder 22. The transport roll 21 is a forced suction type, and a plurality of suction holes 22b are opened in the outer circumferential transport surface 22a of the cylinder 22, and the inside of the cylinder 22 and the suction device 29 are communicated with each other through the opening 24a of the side plate 24. There is. The sealing member 26 seals the suction holes 22b, 22b ... In a region not facing the annular passage R from the inside of the cylinder 22. The roll shaft 25 has a driving means such as a pulley.
28 is attached. The transporting means 20 may be configured by a non-suction type transporting roll instead of being configured only by the transporting roll 21. The heating device 5 includes a heating chamber 31 and a fan 32a disposed inside or outside the heating chamber 31.
And two sets of hot air generators 32 including a heater 32b and the like, and a main duct 33 communicating with the discharge side 32c of each hot air generator 32.
And a return path 34 communicating with the suction side 32d of each hot air generator 32.
It consists of and. Each main duct 33 is provided with a plurality of nozzles 33a for ejecting hot air between the extension passages H, H. The heating device 5 has an exhaust passage 35 provided at an appropriate position. The heating device 5 is not limited to the hot air drying method, but may be an infrared heating method or a heating method using both hot air and infrared rays in accordance with the heat treatment characteristics. At the end of the extension passage H, a drawer device 37 of an appropriate type is arranged.

Next, a heat treatment method using the heating device for a flexible tubular substrate according to the present invention will be described based on an operation mode of the heat treatment device 1. First, as shown in FIG. 1, the chuck claws 3a, 3a, ... Of the upper chuck device 3 are retracted to the released state and the cartridge 39 is carried over the guide tool 2. The cartridge 39 is formed by fitting a flexible tubular base material B having an appropriate length onto the bellows. The flexible tubular base material B of the cartridge 39 is forcibly moved downward to move the stock area of the guide tool 2.
Insert it on R1. Next, the chucking claws 3a, 3a, ... Of the upper chucking device 3 are moved forward to be in the attached state, and then the lower chucking device 4 is released, and the flexible tubular base material B is moved downward. Subsequently, as shown in FIG. 3, the flexible tubular substrate B is coated with the coating agent Ca on the substrate surface Ba by the coating device 8 while passing over the back-up tool 9. Coating film on outer peripheral surface Ba
The flexible tubular base material B coated with Cb passes through the inside of the drying device 12 as shown in FIGS. 4 and 5. The drying device 12 blows the hot air of the appropriate temperature supplied from the hot air generator 14 toward the coating film Cb from each annular nozzle 16a, and dries the coating film Cb of the flexible tubular base material B which is passing. . As shown in FIG. 1, the dried flexible tubular base material B has a discharge port 6a for the air passage 6.
The air pressure inside the cylinder rises and expands due to the air discharged from the inside. The inflated flexible tubular base material B is forcibly transported while being sucked by the transport rolls 21, 21, ... Of the transport means 20, and passes through the heating chamber 31 of the heating device 5. The heating device 5 uses the hot air having a proper temperature supplied from the hot air generating devices 32, 32 to the nozzle 33.
From the a, 33a ... toward the flexible tubular base material B (first
(Refer to the drawing), the coating film Cb of the flexible tubular base material B that is passing is heat-treated. The flexible tubular base material B on which the heat treatment has been completed is guided to the drawing device 37 and carried out to the next step.

(Second Embodiment) FIG. 6 and FIG. 7 show a second embodiment of the conveying means constituting the heat treatment apparatus.

The conveying means 50 has a suction belt device 51 disposed outside the suction area of the conveying roll 21, and a flat extension passage H is formed between the conveying roll 21 and the suction belt device 51. The suction belt device 51 includes a suction box 52 having a plurality of suction holes 52b formed in a concave curved guide surface 52a, and guide rails 53 arranged on both outer sides of the concave curved guide surface 52a (see FIG. 7). And an endless ventilation belt 54 composed of a wire net or a canvas which is guided by the guide rail 53 and moves on the guide surface 52a,
A plurality of guide rolls 55 of the ventilation belt 54 and the transport roll 21
And a drive roll 56 that drives the ventilation belt 54 in synchronism with the above. When the flexible tubular base material B passes through the flat extension path H formed between the transport roll 21 and the suction belt device 51, the outer circumferential transport surface 22a of the transport roll 21 and the suction belt 5 are conveyed.
It is sucked into and forms a swollen tubular shape.

(Third Embodiment) FIG. 8 shows a third embodiment of the device of the present invention.

The heat treatment apparatus 61 of this embodiment is different from the heat treatment apparatus 1 in the intermediate conveyance device 62 and the heating device 75. Except for this different part, it is substantially the same as the heat treatment apparatus 1.

The intermediate transfer device 62 includes a forced drive roll 63 and a guide roll 64.
An endless ventilation belt 65 stretched between and a suction box arranged between the forced drive roll 63 and the guide roll 64.
It consists of 66 and. The intermediate transfer device 62 forms an annular passage R on the upper surface side of the ventilation belt 65, and transfers the flexible tubular base material B into the heating chamber 71 while forcibly sucking it.

The heating chamber 71 moves in the room from the indoor carry-in side D connected to the intermediate transfer device 62 to the indoor carry-out side F while forming an appropriate interval P between the adjacent base material hanging bars 67, 67. Conveying device equipped with a plurality of substrate suspending rods 67 Conveying device 68 is arranged, and extension passage H for suspending flexible tubular substrate B in a loop shape.
Has been formed. The carrier device 68 is provided with rod returning means (not shown) for automatically returning the base material hanging rod 67 reaching the indoor carry-out side F to the indoor carry-in side D along the one-point left transition G in the figure. The base material suspension rod 67 is designed to rotate when moving from the indoor carry-in side D to the indoor carry-out side F, and the contact position between the outer peripheral hanging surface 67a and the flexible tubular base material B is set. In some cases, the flexible tubular base material B is moved so as to be uniformly heat-treated. Further, although not shown in the drawings, the base material suspension rod 67 may have suction holes formed in the outer peripheral suspension surface 67a to prevent slippage between the outer peripheral suspension surface 67a and the flexible tubular base material B. is there.

The heating device 75 includes a hot air generator 72 including a fan 72a and a heater 72b arranged inside or outside the heating chamber 71, and a main duct 73 communicating with a discharge side 72c of the hot air generator 72.
And a return path 74 communicating with the suction side 72d of the hot air generator 72. Each main duct 73 has a nozzle 73a for ejecting hot air between the loop-shaped extension passages H, H.
There are several of them open. The heating device 75 has an exhaust passage in place.
76 is provided. The heating device 75 is not limited to the hot air drying method, but may be an infrared heating method or a heating method using both hot air and infrared rays depending on the heat treatment characteristics.

(Study of Other Examples) The heat treatment devices 1 and 61 are arranged so that the coating device 8 is provided outside the guide tool 2.
And the drying device 12 is provided, and the heating treatment of the coating agent applied to the cylindrical surface of the flexible cylindrical base material B is targeted. However, when the purpose is to heat-set the fibers forming the tubular cloth, the coating device and the drying device are omitted. In this case, the guide tool 2 may be disposed horizontally instead of vertically and supported in a cantilever manner by the chuck device.

〔The invention's effect〕

INDUSTRIAL APPLICABILITY As described above in detail, the present invention provides air to the inside of a flexible tubular base material to inflate the flexible tubular base material to form a flexible tubular base material in an expanded state. Since it is passed through the heating atmosphere, it has an excellent effect that heating can be performed uniformly over the entire region in the cylinder surrounding direction.

[Brief description of drawings]

Each of the drawings shows an embodiment of the present invention, FIG. 1 is a front sectional view showing the whole of the first embodiment, and FIG. 2 is an enlarged view showing a conveying roll in a section along the longitudinal direction. , Third
FIG. 4 is an enlarged cross-sectional view showing the main part of the coating device, FIG. 4 is an enlarged vertical cross-sectional view showing the drying device, and FIG. 5 is V-V of FIG.
FIG. 6 is an enlarged cross-sectional view taken along the line, FIG. 6 is an enlarged cross-sectional view showing an essential part of the conveying means in the second embodiment, and FIG. 7 is a cross-sectional view showing one side portion of the same conveying device as described above. The drawing is a front cross-sectional view showing the whole of the third embodiment with the middle omitted. 2 ... Guide tool, 3, 4 ... Chuck device, 5 ... Heating device, 6 ... Air passage 6a ... Inlet port, 6b ... Outlet port, 8 ... Coating device, 12 ...
Drying device 21 …… Conveying roll, 22a …… Outer peripheral conveying surface, 31 (75) ……
Heating chamber 67 ... Base material hanging rod, 67a ... Peripheral hanging surface, B ... Flexible tubular base material D ... Indoor loading path, F ... Indoor loading path, R ... Cylindrical path, R1 ... stock area H ... extended passage

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display area // B29L 23:00 4F

Claims (7)

[Claims] 1. A tubular passage for a flexible tubular substrate is formed on the outer peripheral side of the guide, and the guide is chucked near both ends of the stock area formed on the carry-in side of the tubular passage. A detachable chucking device is provided, and an air passage that connects the inlet opening on the carry-in side of the guide tool and the outlet opening on the carry-out side of the guide tool is provided in the guide tool, and extends from the carry-out side of the guide tool. A heat treatment apparatus for a flexible tubular base material, characterized in that an extension path for the flexible tubular base material is formed so as to pass through the heating chamber. 2. The coating device is arranged outside the guide tool and on the carry-out side of the stock area, and the drying device is arranged outside the guide tool and on the carry-out side of the coater. Heat treatment device for flexible tubular substrate. 3. A heat treatment apparatus for a flexible tubular substrate according to claim 1, wherein a conveying roll is arranged in the heating chamber, and the extension passage is formed on the outer peripheral conveying surface side of the conveying roll. . 4. The heat treatment apparatus for a flexible tubular substrate according to claim 3, wherein suction holes are formed in the outer peripheral transport surface of the transport roll. 5. A transfer device in which a plurality of base material suspending rods are moved in the heating chamber from the indoor carry-in side to the indoor carry-out side while forming an appropriate interval between the adjacent base material suspending rods. The heat treatment apparatus for a flexible tubular substrate according to claim 1, wherein the extension passage is formed in a loop shape. 6. The heat treatment apparatus for a flexible tubular substrate according to claim 5, wherein the substrate suspension rod rotates on its own axis. 7. The heat treatment device for a flexible tubular substrate according to claim 5, wherein a suction hole is opened in the outer peripheral suspension surface of the substrate suspension rod.