JPH07109651A - Method for treating end part of glass mat and treating device therefor - Google Patents

Abstract

PURPOSE:To provide a method and a device for treating the end of a glass mat into a tapered state not to form difference in level at the end of a laminate in the case of laminating glass mats impregnated with a polyester resin. CONSTITUTION:The end part of chopped strand glass mat 31 cut into an arbitrary shape is inserted into chained materials 3 each of whose one ens is fixed to one of a pair of upper and lower revolving shafts respectively, and which are rotated mutually in the opposite directions. The end part of the glass mat is beaten from the upper and lower sides and made a tapered state to provide a method for treating the end part of a glass mat. The device for treating a glass mat consists of a support 1, revolving shafts fixed to the support, chained materials 3 whose one end is fixed to the revolving shaft and a drive source 4 for supplying revolution power to the revolution shaft.

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 treating an end portion of a chopped strand glass mat, and more specifically, an end portion of a glass mat which is widely used as one type of molding material for FRP. Method and apparatus for processing in a final thin state.

[0002]

2. Description of the Related Art Conventionally, so-called FRP molded products obtained by reinforcing unsaturated polyester resin or the like with glass fibers have been widely used as various molded products such as tanks, containers, boats and the like. Various glass fibers are used as a reinforcing material for FRP, but the most widely used one is to cut a glass strand into an appropriate length, make it non-directional, and use a suitable binder to make a mat. These glass mats have a thickness of about 1 mm and a width of about 100 cm and are wound into a roll.

When these roll-shaped glass mats are actually used, the glass mats are unwound from a roll and cut into a required size before use. As the cutting method, it is general to use a sharp cutter knife or scissors.
The desired FRP molded product can be obtained by stacking a plurality of sheets while impregnating the glass mat thus treated to a desired size with the unsaturated polyester resin.

Further, in the case of a molded product such as a large tank,
As shown in FIG. 4a, in order to increase the strength of the FRP molded product 41 as a whole, it is necessary to further reinforce it with an iron pipe 42, an iron band or the like. In this case, in order to prevent corrosion of the iron pipe 42 used for reinforcement and to improve the appearance, the glass mat 43 impregnated with resin around the iron pipe 42,
It is required that 43 '... be overlapped and coated, and in this case as well, a glass mat having a shape for coating the iron pipe 42 is required, and the glass mat is cut and used in such a shape.

[0005]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In the conventional cut glass mat as described above, the cut surface 32 is perpendicular to the surface of the glass mat 31, as shown in FIG. By using the formed glass mat 31, for example, in order to prevent corrosion of the iron pipe 42 provided on the wall surface of the FRP molded product 41 as shown in FIG. When a plurality of FRP layers 43, 43 '... Are laminated, a step 4 corresponding to the thickness of the glass mat is formed at the end of the laminated body as shown in Fig. 4a.
4 results. Since such a step 44 is unfavorable in appearance, it is required to grind its corners with a grinder or the like to make it flat as shown in FIG. 4b. However, such a grinding process is very complicated. There is.

Therefore, it is an object of the present invention to provide a laminated glass mat impregnated with a polyester resin as shown in FIG.
As shown in, the step 44 is not formed at the end of the laminated body,
As shown in FIG. 3b, the end portion of the glass mat 31 is formed into a tapered shape 3
It is to provide a method and an apparatus for processing the same.

[0007]

The above object can be achieved by the present invention described below. That is, the present invention, one end of which is fixed to a pair of upper and lower rotating shafts, between the chain-like bodies rotating in opposite directions, by inserting the end of the chopped strand glass mat cut into any shape A method for treating an end portion of a glass mat, wherein the end portion of the glass mat is beaten from above and below with a chain to thin the end portion of the glass mat, and a support (1) and a support A glass mat comprising a rotating shaft (2) fixed to the rotating shaft, a chain body (3) having one end fixed to the rotating shaft, and a power source (4) for applying a rotating force to the rotating shaft. Is an end processing device.

[0008]

The end portion of the chopped strand glass mat cut into an arbitrary shape is fixed between a pair of upper and lower rotary shafts provided on the support 1 at one end thereof, and between the chain members rotating in opposite directions. 4b, the end of the glass mat is beaten from above and below with a chain, and the end of the glass mat is made into a tapered shape 33 as shown in FIG. 3b. Even if a plurality of glass mats are laminated, a step does not occur at the end thereof.

[0009]

The present invention will now be described in more detail with reference to the accompanying drawings, which show preferred embodiments. The method of the present invention is illustrated in FIG.
As shown in a, the end 32 of the chopped strand glass mat 31 cut into an arbitrary shape is beaten from above and below by the chain 3 by the device as shown in FIGS. 1 and 2, and as shown in FIG. 3b. , The end of the glass mat 31 is tapered 33
It is characterized by

As shown in FIGS. 1 and 2, the edge treatment device for a glass mat of the present invention has a support 1, a rotary shaft 2 fixed to the support 1, and one end of the rotary shaft 2. It is characterized by comprising a chain-like body 3 to which is fixed and a power source 4 which gives a rotational force to the rotating shaft 2.

The support 1 is a side view of FIG.
As shown in FIG. 2 which is a front view thereof, it is formed of a pair of side plates 6 and 6'having an appropriate width and height fixed to an arbitrary wooden or metal table 5. These side plates 6 and 6'may be arranged at appropriate intervals as shown in FIG.
The bottom plate 13 and the top plate 14 are spaced apart by about 5 to 65 mm.
It is reinforced by. On one of the side plates 6 and 6 ',
A pulley 7 for transmitting the power of the motor 4 which is a power source,
Four pieces of 8, 9 and 10 are provided through appropriate bearings.

Two of these pulleys (7, 9) are
It is provided to give reverse rotation to the pulley 8 and the pulley 10. The pulleys 8 and 10 are connected to the rotating shafts 2 and 2 ', and the chain supporting members 11 and 11' for fixing one end of the chain 3 are fixed to the rotating shafts 2 and 2 '. It rotates at the same speed as 2, 2 '. One ends of a pair of chain-like bodies 3 are fixed to the support tools 11 and 11 ', respectively. The chain-like body 3 is, for example, a roller chain having a width of about 10 to 20 mm cut into an appropriate length, for example, about 70 to 100 mm. Incidentally, these chain-like bodies 3 are drawn horizontally or vertically in the drawing for convenience of explanation, but in reality, they are hung down from the position fixed by the chain-like body supporting tools 11, 11 '. There is.

Various metal chains can be used as the chain 3, but the roller chain can be bent up and down freely in the arrangement shown in the drawing, but cannot be bent left and right, so that it can rotate at a high speed. Even if it is made, the chain-like bodies do not collide with each other, and when the mat 31 is beaten, the motor 4 is not excessively loaded by bending up and down.
As the chain body 3, a roller chain is particularly suitable for achieving the object of the present invention. In addition, it is preferable to provide a steel tip 17 at the free end of the roller chain 3 in order to improve the beating force against the mat 31. still,
Reference numeral 15 in FIG. 1 is a housing that covers the entire apparatus of the present invention, and a slit 16 for inserting the tip 32 of the mat 31 is provided in a part of the housing.

The support 1, the rotary shaft 2 and the chain 3 as described above.
When a high-speed rotational force is applied from the motor 4 as a power source to the main body composed of the endless belt 12 having a circular cross section, the rotational force passes through the pulleys 7, 8, 9, 10 to the rotational shafts 2, 2 '. , And is transmitted to the chain body 3 through the chain body support tools 11 and 11 ', and the chain bodies 3 rotate at high speed in mutually opposite directions as shown by an arrow a in FIG. At this time, since the upper chain body 3 and the lower chain body 3 are arranged at positions where their rotation surfaces do not intersect with each other, they do not collide with each other.

Between the upper and lower chain members 3 rotating at high speed,
As shown in FIG. 1, an end 32 of a glass mat 31 cut into an arbitrary shape, for example, a linear shape, a curved shape, an arc shape, or the like is inserted into a slit 16 of a housing 15 and is inserted along the end of the mat. When the mat 31 is horizontally moved by the horizontal movement, the end portion 32 of the mat 31 is beaten from above and below by the chain body 3, and among the glass strands forming the end portion 32,
The glass strands at the positions intersecting with the longitudinal direction of the mat 31 are disentangled from the mat 31 by the beating force of the chain body 3, and only the glass strands arranged in parallel with the longitudinal direction of the mat 31 have end portions 32. 3b, the end 32 is tapered 33 as shown in FIG. 3b.

Although the present invention has been described with reference to the preferred embodiments, the apparatus of the present invention comprises a support body 1, a rotary shaft 2 fixed to the support body, and a chain body having one end fixed to the rotary shaft. 3 and a power source 4 for applying a rotational force to the rotary shaft, and various other examples are included as long as the above-mentioned operation and the effect described later are exhibited. Other examples include, for example, an example in which one, three or four chain bodies 3 are provided on one rotary shaft 2, and an example in which the chain bodies 3 are directly provided on the rotary shaft 2. .

[0017]

As described above, according to the present invention, one end of a chopped strand glass mat cut into an arbitrary shape is fixed to a pair of upper and lower rotary shafts provided on the support 1, and the opposite ends are opposite to each other. It is inserted between rotating chains, and the ends of the glass mat are beaten from above and below by the chains, and the ends of the glass mat are tapered 33 as shown in FIG. 3b.
By so doing, even if a plurality of resin-impregnated glass mats are laminated as shown in FIG. 4b, no step is formed at the end thereof.

Further, the glass mat having a thin end portion obtained by the present invention is also useful for joining FRP sheets. For example, in the case of joining two FRP sheets, conventionally, as shown in FIG. 5a, the ends thereof are overlapped and joined, but in this case, a clear step is generated in the joining portion and the appearance is It is not preferable. On the other hand, when joining the FRP sheet using the thin mat according to the present invention, as shown in FIG.
When the thinned portions are overlapped and joined as shown in b, no step is generated in the joined portion, and the joined article has an excellent appearance. Also, F
When laminating a plurality of RP sheets, the joining method as shown in FIG. 5a causes the joining portion to be too thick. Therefore, the FRP sheets are butt-joined as shown in FIG. C, but in this case the joining area is small. Bonding strength is poor, but Fig. 5
As shown in FIG. 5d, by using the taper mat according to the present invention for stacking and joining, not only a step is not generated, but also the strength of the joined portion can be remarkably improved.

[0019]

[Brief description of drawings]

1 diagrammatically shows a side view of the device according to the invention, FIG.

FIG. 2 diagrammatically shows the front of the device according to the invention.

FIG. 3 is a diagram schematically showing the processing of a mat according to the method and apparatus of the present invention.

FIG. 4 is a diagram schematically showing the function and effect of the method and apparatus of the present invention.

FIG. 5 is a diagram schematically showing the function and effect of the method and apparatus of the present invention.

[Explanation of symbols]

 1: Support body 2: Rotating shaft 3: Chain-like body 4: Motor

Claims (2)

[Claims] 1. An end of a chopped strand glass mat cut into an arbitrary shape is inserted between chain-like bodies whose one ends are fixed to a pair of upper and lower rotating shafts and are rotating in opposite directions, A method for treating an end portion of a glass mat, wherein the end portion of the glass mat is beaten from above and below with a chain to thin the end portion of the glass mat. 2. A support (1), a rotary shaft (2) fixed to the support, a chain (3) whose one end is fixed to the rotary shaft, and power for giving a rotary force to the rotary shaft. An apparatus for edge treatment of a glass mat, which comprises a source (4).