JPH10193352A - Resin impregnating apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a resin impregnating apparatus for controlling an impregnating resin amount with high reproducibility and high accuracy. SOLUTION: In the resin impregnating apparatus comprising a resin impregnating tank 10, a resin-impregnating roll 1 dipped at a lower part of the roll in resin 11 of the tank 10, and a film thickness regulating plate 2 disposed near a surface of the roll 1 to finely slidably regulate by a screw mechanism 3, thereby regulating its resin film thickness of the resin 11 picked up to a surface of the roll 1 by rotation by the plate 2, then coating to impregnate to a fiber base material 9 in contact with an upper surface of the roll 1, a mechanism 6 for bringing the plate 2 into contact with the surface of the roll 1 by predetermined pressure is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a cellulose fiber,
The present invention relates to an apparatus for impregnating a fiber base material such as glass fiber or carbon fiber with a resin, and particularly to a resin impregnation apparatus capable of controlling the amount of impregnated resin with high reproducibility and high accuracy.

[0002]

2. Description of the Related Art A resin impregnation apparatus for impregnating a fiber base material such as cellulose fiber, glass fiber, carbon fiber or the like with a resin is used, for example, in a process of manufacturing fiber reinforced plastic (FRP) pipes and FRP containers. .

[0003] Since the capacity and characteristics of a resin-containing fibrous body produced using a resin impregnation apparatus greatly depend on the amount of resin impregnated into the fiber base material, the amount of impregnated resin in the fiber base material is an important manufacturing parameter. One method for controlling the amount of impregnated resin as described below has been proposed.

JP-A-63-3413 discloses that a fiber bundle is immersed in a resin bath to impregnate the resin excessively, and then a part of the impregnated resin is scraped off using two bars to reduce the amount of the impregnated resin. A method of controlling is disclosed. In this method, only the amount of the impregnated resin can be roughly controlled, and the fiber bundle is easily fluffed or cut because the fiber bundle is bent between the two bars.

In Japanese Patent Application Laid-Open Nos. 50-109267 and 8-169014, a part of a rotating coating roll is immersed in a resin, and the amount of the resin picked up on the surface of the coating roll is applied to the coating roll. A method has been proposed in which a fiber base material is applied and impregnated while being adjusted by a squeezing roll arranged in close proximity. In this method, the fluffing or breakage of the fiber hardly occurs as described above, but since the amount of resin to be applied and impregnated on the fiber base material is adjusted by the interval between the application roll and the squeezing roll, the rotation speed of the roll and the resin And it is difficult to control the amount of the impregnated resin with high accuracy because the amount greatly depends on the viscosity of the resin.

Japanese Utility Model Laid-Open Publication No. 4-87215 discloses a method of controlling the amount of impregnated resin by using a film thickness adjusting plate capable of finely adjusting a slide instead of the above-mentioned squeezing roll.
In this method, the distance between the roll surface and the film thickness adjustment plate is adjusted with an accuracy of 1/100 mm by sliding the film thickness adjustment plate capable of fine adjustment slide by a screw mechanism, and the resin picked up on the application roll surface is adjusted. After adjusting the film thickness to a predetermined thickness, the fiber base material is applied and impregnated. Therefore, the dependency on the rotation speed of the roll and the viscosity of the resin is small, and the amount of the impregnated resin can be controlled more accurately than when a squeezing roll is used.

[0007]

However, in the method described in Japanese Utility Model Laid-Open Publication No. 4-87215, the zero point adjustment of the interval between the roll surface and the film thickness adjusting plate is performed by a person using a screw to adjust the film thickness. Since the plate is pressed against the roll surface, the zero point varies depending on the chance or person, and there is a problem that the amount of the impregnated resin cannot be controlled with good reproducibility.

The present invention has been made to solve such a problem, and an object of the present invention is to provide a resin impregnating apparatus capable of controlling the amount of impregnated resin with good reproducibility and high accuracy.

[0009]

The above object is achieved by a resin impregnating tank, a resin impregnating roll whose lower part is immersed in the resin of the resin impregnating tank, and a screw mechanism disposed close to the surface of the resin impregnating roll. A film thickness adjusting plate capable of fine adjustment slide, and a resin picked up on the surface of the resin impregnated roll by rotation, after adjusting the resin film thickness by the film thickness adjusting plate, comes into contact with the upper surface of the resin impregnated roll. In a resin impregnating apparatus for applying and impregnating a fiber base material, a mechanism for bringing the film thickness adjusting plate into contact with the surface of the resin impregnating roll at a constant pressure is provided.

[0010] A mechanism for bringing the film thickness adjusting plate into contact with the roll surface at a constant pressure is provided, and when the distance between the film thickness adjusting plate and the roll surface is set before the operation of the resin impregnating apparatus, the film thickness adjusting plate is moved to the roll surface. If the zero point setting is performed by contacting the impregnated resin with a constant pressure, the amount of the impregnated resin can be controlled with good reproducibility without a chance or deviation of the zero point by a person.

When the distance between the roll surface and the film thickness adjusting plate is set to a predetermined value after the zero point is set, if a mechanism is provided for keeping the film thickness adjusting plate away from the surface of the resin-impregnated roll at a constant pressure, a screw mechanism and film thickness There is no need to engage the adjustment plate, and it is possible to prevent a decrease in accuracy due to a displacement at the time of engagement, so that the amount of impregnated resin can be controlled with higher accuracy.

[0012]

FIG. 1 is a side view of a resin impregnating apparatus according to an embodiment of the present invention. FIG. 2 shows a plan view of the resin impregnation apparatus shown in FIG. FIG. 3 shows an enlarged view of the vicinity of the film thickness adjusting plate of the resin impregnating apparatus shown in FIG. In the drawing, 1 is a resin impregnated roll, 2 is a film thickness adjusting plate, 3 is a micrometer, 4 is a member for moving the film thickness adjusting plate, 5 is a guide member for the film thickness adjusting plate, 6 is a spring for setting a zero point, 7 Is a support member for a micrometer and a spring for setting a zero point, 8 is a spring for setting an interval, 9 is a fiber base material, 10 is a resin impregnation tank, 11 is a resin, 1
2 represents a gantry.

The resin-impregnated roll 1 whose lower part is immersed in the resin 11 of the resin-impregnated tank 10 rotates and picks up the resin 11 on the surface of the resin-impregnated roll 1. A part of the resin 11 picked up on the surface of the resin-impregnated roll 1 is scraped off by the film-thickness adjusting plate 2 whose distance is accurately set, and the resin film is adjusted. If applied to the fiber base material 9 in contact with the resin, the amount of impregnated resin can be controlled with high accuracy.

At this time, the zero point adjustment of the distance between the film thickness adjusting plate 2 and the surface of the resin impregnating roll 1 performed before the operation of the impregnating device is performed by the constant spring force of the zero point setting spring 6. Is slid along the film thickness adjusting plate guide member 5 to contact the surface of the resin impregnated roll 1, and then the tip of the micrometer 3 is used as the film thickness adjusting plate moving member 4 using the ratchet mechanism of the micrometer 3. If it is performed by resetting the position of the micrometer 3 to zero by making contact with it, there is no chance or displacement of the zero point by a person, and the amount of impregnated resin can be controlled with good reproducibility. The zero point setting spring 6 is provided with a mechanism for releasing the spring force, and the spring force does not act during the operation of the impregnation device.

When the distance between the surface of the resin-impregnated roll 1 and the film thickness adjusting plate 2 is set to a predetermined value by the micrometer 3 after the zero point is set, the film thickness adjusting plate is controlled by a constant spring force of the space setting spring 8. 2 is slid along the guide member 5 for the film thickness adjusting plate and moved away from the surface of the resin impregnated roll 1, the amount of movement of the film thickness adjusting plate 2 becomes micrometer via the member 4 for moving the film thickness adjusting plate. 3, it is not necessary to engage the micrometer 3 with the film thickness adjusting plate 6, and it is possible to prevent a decrease in accuracy due to a displacement at the time of engagement, so that the amount of impregnated resin can be controlled with higher precision. . The interval setting spring 8 is also provided with a mechanism for releasing the spring force. During operation of the impregnating device, the spring force acts to keep the distance between the surface of the resin impregnated roll 1 and the film thickness adjusting plate 2 constant. , But the spring force is released when the zero point is set.

In this apparatus, a spring is used as a mechanism for bringing the film thickness adjusting plate into contact with the surface of the resin-impregnated roll at a constant pressure or moving the film thickness adjusting plate away from the roll surface at a constant pressure. A mechanism that can apply pressure can also be used.

Also, as the screw mechanism, a mechanism combining a dial gauge and a screw can be used instead of the micrometer.

[0018]

EXAMPLE Using the resin impregnating apparatus of the present invention shown in FIGS. 1, 2 and 3, the distance between the film thickness adjusting plate and the roll surface was changed as shown in Table 1, and a fiber base having a diameter of 24 μm was used. A fiber bundle in which 4000 glass fibers were bundled was impregnated with an epoxy resin. Three samples were prepared under the same conditions with different chances, and the resin content as defined below was measured to investigate the reproducibility.

Also, for comparison, see Japanese Utility Model Application Laid-Open No. 4-87721.
Using a resin impregnating device described in Japanese Patent Publication No. 5 (1999) -1995, a similar investigation was conducted by manually adjusting the zero point. Resin content (volume content) = Vf / (Vf + Vr)
[%] Here, Vf represents the volume of the fiber, and Vr represents the volume of the resin.

The results are shown in Table 1. Regardless of the distance between any of the film thickness adjusting plates and the roll surface, the use of the resin impregnating apparatus of the present invention reduces variation in the resin content of samples prepared by changing chances under the same conditions, and is excellent in reproducibility. You can see that it is.

[0021]

[Table 1]

[0022]

Since the present invention is configured as described above, it is possible to provide a resin impregnating apparatus that can control the amount of impregnated resin with good reproducibility and high accuracy.

[Brief description of the drawings]

FIG. 1 is a side view of a resin impregnating apparatus according to one embodiment of the present invention.

FIG. 2 is a plan view of the resin impregnating apparatus shown in FIG.

FIG. 3 is an enlarged view of the vicinity of a film thickness adjusting plate of the resin impregnating apparatus shown in FIG.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 resin impregnated roll 2 film thickness adjustment plate 3 micrometer 4 film thickness adjustment plate moving member 5 film thickness adjustment plate guide member 6 zero point setting spring 7 support member for micrometer and zero point setting spring 8 interval setting Spring 9 Textile base material 10 Resin impregnation tank 11 Resin 12 Mount

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code FI B29K 307: 04 309: 08

Claims (2)

[Claims] 1. A resin impregnating tank, a resin impregnating roll whose lower part is immersed in the resin of the resin impregnating tank, and a film thickness arranged close to the surface of the resin impregnating roll and capable of fine adjustment slide by a screw mechanism. An adjusting plate, the resin picked up on the surface of the resin-impregnated roll by rotation, after adjusting the resin film thickness by the film-thickness adjusting plate, and applying and impregnating the fiber base material in contact with the upper surface of the resin-impregnated roll. In the impregnation apparatus, a mechanism for bringing the film thickness adjusting plate into contact with the surface of the resin impregnation roll at a constant pressure is provided. 2. The resin impregnating apparatus according to claim 1, further comprising a mechanism for moving the film thickness adjusting plate away from the surface of the resin impregnation roll at a constant pressure.