JPH10337727A - Method and apparatus for manufacturing synthetic resin adhered fiber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To hold a synthetic resin amount in a fluidizing tank constant by detecting the resin amount in the tank, and regulating synthetic resin supply amount into the tank according to a detected value. SOLUTION: A glass roving 7 of fiber is fed, and guided to a fluidizing chamber via an introducing roll 32. The roving 7 is passed through synthetic resin powder 2 of floating fluidizing state in the chamber via guide rolls 31. And, the roving 7 is adhered to the powder 2. Then, it is arrived at a heating step via a discharge side guide roll 33, the powder 2 adhered to the roving 7 is melted integrally with the riving 7, and cooled to be solidified to a product. A screw pump 5 for supplying the powder 2 into the chamber is operated when a height H detected by a height sensor 4 becomes a predetermined value or more, thereby holding the amount of the powder in the chamber constant. Accordingly, the amount of the powder 2 adhered to the roving 7 is held constantly.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for producing synthetic resin-adhered fibers.

[0002]

2. Description of the Related Art Conventionally, for example, Japanese Patent Publication No. 63-67446.
As described in Japanese Patent Application Laid-Open Publication No. H10-207, there is known a method for producing a synthetic resin-adhered fiber in which a fiber is introduced into a fluidized tank in which a synthetic resin powder is stored in a fluidized state, and a synthetic resin is adhered to the fiber. .

[0003]

However, in the method for producing synthetic resin-adhered fibers as described above, the process of adhering the synthetic resin to the fibers in the fluidized tank due to a change in the ambient temperature, a change in the bulk density of the synthetic resin, or the like. It is inevitable that the amount of synthetic resin adhered to the fibers in the above will fluctuate, and if the amount of synthetic resin in the fluidized tank fluctuates due to the fluctuation of the amount of synthetic resin, the demand and supply of the amount of synthetic resin in the fluidized tank And the balance of synthetic resin on the fiber is affected.

Therefore, conventionally, an operator checks the balance between the demand and supply of the amount of synthetic resin in the fluidized tank one by one,
Each time, the amount of synthetic resin supplied into the fluidized tank had to be adjusted.

The present invention has been made in view of such problems in the conventional method for producing synthetic resin-attached fibers, and an object thereof is to solve the above-mentioned problems.
An object of the present invention is to provide a method and an apparatus for producing synthetic resin-adhered fibers that do not require an operator to check the balance between the demand and supply of the synthetic resin amount in the fluidized tank and adjust the synthetic resin supply amount in the fluidized tank. It is in.

[0006]

According to a first aspect of the present invention, there is provided a method for producing a synthetic resin-adhered fiber, comprising the steps of: In the method for producing a synthetic resin-adhered fiber in which the synthetic resin is introduced into the tank and the synthetic resin is attached to the fiber, the amount of the synthetic resin in the fluidized tank is detected, and the amount of the synthetic resin supplied into the fluidized tank is adjusted based on the detected value. It is a feature.

A second aspect of the present invention is an apparatus for producing a synthetic resin-attached fiber used in the method for producing a synthetic resin-attached fiber according to the first aspect of the present invention. A sensor for detecting the height of the synthetic resin in the inside, and a synthetic resin supply device that adjusts a synthetic resin supply amount into the fluidized tank based on a value detected by the sensor is provided. .

In the present invention, the synthetic resin is not particularly limited as long as it is a synthetic resin conventionally used for producing synthetic resin-attached fibers, and is not particularly limited. Thermoplastic or thermosetting synthetic resins, such as coalescing, ABS resin, polycarbonate, vinyl chloride resin, engineering plastics such as nylon, polyether sulfone, and polyphenylene sulfide, can be used alone or in appropriate combination.

In the present invention, the particle diameter of the synthetic resin powder is preferably about 10 to 300 μm. If the particle diameter of the synthetic resin powder is less than 10 μm or exceeds 300 μm, it is difficult to adhere to the fiber, which is not preferable.

[0010] The fiber of the present invention is not particularly limited as long as it is a fiber which has been conventionally used for producing a synthetic resin-attached fiber, and examples thereof include glass fiber, boron fiber, carbon fiber and graphite fiber. ,
Fibers such as nylon fibers can be used.

According to the first aspect of the present invention, the amount of synthetic resin in the fluidized tank is detected, and the amount of synthetic resin supplied to the fluidized tank is adjusted based on the detected value. Therefore, by detecting the amount of the synthetic resin in the fluidized tank, the amount of the synthetic resin in the fluidized tank can be kept constant.

Further, in the apparatus for producing synthetic resin-adhered fibers according to the present invention, a sensor for detecting the height of the synthetic resin in the fluidized tank is provided, and the sensor detects the height of the synthetic resin in the fluidized tank. Since a synthetic resin supply device is provided to adjust the amount of synthetic resin supplied, the amount of synthetic resin in the fluidized tank is detected by a sensor that detects the height of the synthetic resin in the fluidized tank. The amount of synthetic resin in the fluidized tank can be kept constant by adjusting the amount of synthetic resin supplied into the tank.

[0013]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory view showing one embodiment of the method for producing a synthetic resin-attached fiber of the present invention.

In FIG. 1, reference numeral 1 denotes a fluidized tank, in which a perforated plate 11 is provided inside the fluidized tank 1, and a perforated plate 12 provided at a lower portion beside the fluidized tank 1 is provided below the perforated plate 11. The gas G such as air or nitrogen gas introduced into the gas chamber 13 of the air blows up into the flow chamber 14 above the perforated plate 11, and the synthetic resin powder stored in the flow chamber 13 above the perforated plate 11 2 is brought into a floating fluidized state by the gas G that blows up.

Reference numeral 31 denotes a guide roll provided in the flow chamber 14, 32 denotes an introduction-side guide roll provided above the front wall 15 of the flow chamber 14, and 33 denotes a rear wall 16 of the flow chamber 14.
Is a discharge-side guide roll provided in the vicinity of the upper part of the sheet.

Reference numeral 4 denotes an ultrasonic height sensor mounted on the front wall 15 of the flow chamber 14, which detects the height H of the synthetic resin powder 2 in the flow chamber 14 from the surface.

Reference numeral 5 denotes a screw pump as a synthetic resin supply device provided above the fluidized tank 1. One end of a transfer pipe 61 is connected to the suction part 51 of the screw pump 5, and the other end of the transfer pipe 61 is connected to the suction pipe 51. The synthetic resin powder 2 in the storage tank 6 is inserted into the synthetic resin powder 2 in the storage tank 6, and the synthetic resin powder 2 in the storage tank 6 is sucked into the screw pump 5 by the rotation of the screw shaft 52 of the screw pump 5 and synthesized from the discharge port 53. The resin powder 2 can be supplied into the flow chamber 14.

The synthetic resin supply device 5 operates when the height H detected by the height sensor 4 exceeds a certain value.

Next, an embodiment of producing a synthetic resin-attached fiber by the method of the present invention using the above-described apparatus will be described. The glass roving 7, which is a fiber, is fed from a feeding step (not shown), and is introduced into the flow chamber 14 via the introducing roll 32. The glass roving 7 is formed into the glass roving 7 by passing through the synthetic resin powder 2 in a floating fluidized state in the flow chamber 14 via the guide rolls 31 in the flow chamber 14. The resin powder 2 is attached.

Next, a heating step (not shown) is performed via the discharge side guide roll 33, and the synthetic resin powder 2 attached to the glass roving 7 is melted and integrated with the glass roving 7, and cooled and solidified to obtain a product. Become.

The screw pump 5 for supplying the synthetic resin powder 2 into the fluid chamber 14 operates when the height H detected by the height sensor 4 exceeds a certain value. The amount of the synthetic resin powder 2 is kept constant. Therefore, the amount of the synthetic resin powder 2 attached to the glass roving 7 is kept constant.

Although the embodiment of the present invention has been described with reference to the drawings, the configuration of the present invention is not limited to the illustrated embodiment, and any design change within the scope of the present invention is possible. Included in the present invention.

For example, instead of using the screw pump 5 as a synthetic resin supply device as in the illustrated embodiment, the synthetic resin powder is supplied by another powder supply device, that is, a conveyor or the like. Is also good.

[0024]

According to the first aspect of the present invention, the amount of the synthetic resin in the fluidized tank can be kept constant by detecting the amount of the synthetic resin in the fluidized tank. Therefore, the amount of synthetic resin adhering to the fiber can be made constant, and a high-quality synthetic resin-adhered fiber can be manufactured, so that there is no need for the operator to adjust the amount of synthetic resin in the fluidized tank.

According to the second aspect of the present invention, the amount of the synthetic resin in the fluidized vessel is detected by a sensor for detecting the height of the synthetic resin in the fluidized vessel. By adjusting the amount of synthetic resin supplied into the fluidized tank according to the detected value, the amount of synthetic resin in the fluidized tank can be kept constant, so that the amount of synthetic resin adhering to the fibers can be kept constant, and quality can be improved. An excellent synthetic resin-adhered fiber can be manufactured, and an operator does not need to individually adjust the amount of synthetic resin in the fluidized tank.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing one embodiment of the method for producing a synthetic resin-attached fiber of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fluid tank 11 Perforated plate 12 Inlet pipe with valve 13 Gas chamber 14 Flow chamber 15 Front wall 16 Rear wall 2 Synthetic resin powder 31 Guide roll 32 Introducing guide roll 33 Discharge side guide roll 4 Height sensor 5 Synthetic resin supply device 6 Storage tank 7 Fiber (glass roving)

Claims (2)

[Claims] 1. A method for producing a synthetic resin-adhered fiber, in which a fiber is introduced into a fluidized tank containing synthetic resin powder in a fluidized state and the synthetic resin is attached to the fiber, the amount of the synthetic resin in the fluidized tank is reduced. A method for producing a synthetic resin-adhered fiber, comprising detecting and adjusting a synthetic resin supply amount into a fluidized tank according to a detected value. 2. An apparatus for producing a synthetic resin-adhered fiber used in the method for producing a synthetic resin-adhered fiber according to claim 1.
A synthesis, wherein a sensor for detecting the height of the synthetic resin in the fluidized tank is provided, and a synthetic resin supply device is provided, in which a synthetic resin supply amount in the fluidized tank is adjusted according to a value detected by the sensor. Equipment for manufacturing resin-attached fibers.