JPS5939523A - Curved pultrusion - Google Patents

Abstract

PURPOSE:To take-off curved pultrusion articles having various radii of curvature through a simple adjustment, by a method wherein a pair of rotatable bodies pressed against to each other end rotated in opposite directions to take-off the article are used as a take-off device. CONSTITUTION:Each of the take-off means is constituted of the rotatable body 1, a shaft 2 and a supporting base 3, and the means are placed in pairs A-B, C-D and E-F. The shaft 2 can be stretched and contracated, and can be rotated in a three-dimensional manner with the supporting base 3 as a center. The traction force for a pultrusion article is constituted of pressing forces of each pair of the rotatable bodies 1 and rotating forces of the bodies 1 being rotated in the opposite directions, and is adjusted in accordance with the radii of curvature of the pultrusion articles (a), (b).

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a curved pultrusion molding method in which the reverse side of a fiber-reinforced plastic is pulled out using a pulling device that allows the arrangement to be easily and freely changed according to the curvature of the pultrusion molded product. It is something.

Pultrusion molding equipment is mainly used for reinforcing material supply equipment such as roving,
It consists of resin impregnation equipment, molds, take-off equipment, product cutting machine, etc. Some sort of pulling device is required to pull the molded product out of the mold. Since conventional pultrusion molded products are mostly drawn linearly, it is sufficient for the pulling device to be able to cope with changes in the thickness of the molded product mainly in the vertical direction. For example, in a method of picking up molded products by sandwiching them between rolls, caterpillars, or endless conveyors, it has been possible to pick up molded products of various hook sizes simply by changing the width of the clamping. Recently, the special public
As seen in Japanese Patent No. 984, it has become possible to produce curved pultrusion molded products instead of straight ones, but along with this, it has become increasingly difficult for town equipment to respond simply by changing the clamping width as in the past. In other words, when taking a pultruded product with 9 curves, it is necessary to deal with the thickness of the molded product as well as its curvature, which becomes extremely complicated. The device disclosed in Japanese Patent Publication No. 52-984 uses curved caterpillars, but since the entire pulling device is a series of integrated caterpillars, it cannot be said to be suitable for delicate curvature adjustments.

The present inventors have developed a curved pultrusion method in which curved pultrusion molded products with various curvatures can be pulled out using a pulling device that can be pulled out with a simple adjustment. It has been found that a pair of rotating bodies that rotate in opposite directions to each other can be used as the take-up device. That is, the present invention provides a method for obtaining a fiber-reinforced plastic pultruded product by pulling it out from a mold having a predetermined cross-sectional shape using a pulling device, in which the pulling device comprises:
A predetermined number of pullers, each consisting of a pair of rotating bodies that rotate in opposite directions, are arranged so that the position can be freely changed according to the curvature of the pultruded product. This invention relates to a curved pultrusion method characterized by the following.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be explained based on the embodiment shown in the drawings, but the present invention is not limited to this one embodiment. In both Figures 1 and 2, the placement of the collection device, or in other words, the installation location, is ABC! They are indicated by DIF and have exactly the same arrangement. A in FIG. 1 and the opening in FIG. 2 indicate curved pultruded products with different curvatures, such as square pipes and ronds. The take-up device includes the rotating body 1 shown in FIG.
A-B, O=D or E in Fig. 1, consisting of a shaft 2 that supports a rotating body and a support stand 3 that supports the shaft.
- They are arranged in pairs like F. As shown in Figure 4, the pair of pullers shown in Figures 1 and 2 can also be provided integrally by connecting the rotating bodies 1 with the shaft 2 and passing the molded product between the rotating bodies. .

The shaft 2 can be expanded and contracted in the X-Y direction at least a little.
Moreover, it is three-dimensionally rotatable around the support base 3.

The three-dimensional rotation of the shaft 2 can be achieved, for example, by horizontally rotating the shaft and making the support base 3 vertically movable. This function of the shaft 2 serves to adapt the drawer to each glaze curvature.

In the take-up device placed at O-D in Figures 1 and 2, molded products with different curvatures are at right angles to the 0-D arrangement. The adjustment can be made by moving the rotating body d, backward, and moving the rotating body d forward with respect to the molded product as shown at. That is, in such a special position, it can be adjusted by expanding and contracting the shaft. On the other hand, in the arrangement A-B or E-F, the curvature changes from A to mouth, and the arrangement is fixed by the support base, so rotating body a is changed to a! ni, b, do,
or the rotating body e, as θ.

, we have to move,f,to,f,. In such a case, as is clear from a comparison of Figure 2, it is necessary for the shaft to extend, contract, and rotate.

In the embodiments of FIGS. 1 and 2, the support stands 3 are fixed separately, but several support stands may be provided integrally to determine the kI. Figure 5 shows a curved pultrusion device? l]' is clearly male. The molded product taken off by the taking-off device 6 of the present invention exits the mold 4, passes through the cut roller 5 by the cutting machine 31, and is finally cut by the cutter 7 to become a product.

The force for pulling and pulling the molded product is due to the pressing force between the pair of rotating bodies and the rotational force of the rotating bodies that rotate in opposite directions. The advantage of the rotating body is that it does not deform the molded product, and in order to prevent slippage, it is preferable that at least the outer surface of the rotary body is made of an elastic body.

The shape of the rotating body may be cylindrical or spherical. The mechanism for rotating the rotating body may be provided on the support stand or the rotating body itself, and the expansion/contraction and rotation 41 of the shaft 2 may be provided on the support stand. The pressing force between the rotating bodies in each puller, the rotational speed of each rotating body, etc. are adjusted according to the curvature of the molded product.

The Hj-node of the pressure contact force is made possible by combining the extension and contraction shaft rotational forces. It goes without saying that the take-off device of the present invention can also be applied to planar pultrusion products.

[Brief explanation of drawings]

Figures 11 and 2 are schematic plan views showing the position of the puller and the opening of the bent puller. Figure 3 shows the rotating body 1
FIG. 3 is a schematic diagram of a take-up device composed of a shaft 2 and a support stand 3. FIG. 4 is a schematic diagram of a take-up machine in which rotating bodies are connected by a shaft 2. Elephant, Figure 5: is a curved extraction device K consisting of a metal force; 1j4, a kite roller 5, a pulling device 6, and a cutting machine 7.
A route map. 1...Rotating body, 2...Shaft, 3...Support stand,
A, B, O, D, E, F...Indicates the position M where the support stand is placed, 6...The take-up value when the take-up devices are arranged in a predetermined number. Within the agent 1) Akira agent Ryo Hagihara − (η Me3) Closed Kaya 4 same

Claims (2)

[Claims] (1) In a method for obtaining a curved pultruded product made of fiber-reinforced plastic by pulling the mold from a mold having a predetermined cross-sectional shape using a pulling device, the pulling device can freely adjust the curved shape according to the curvature of the pultruded product. A curved pultrusion molding method characterized by a predetermined number of disposed pullers consisting of a pair of rotating bodies that rotate in opposite directions, which are pulled by rotational force while being pressed against each other, and whose positions can be changed at any time. (2) A puller consisting of a pair of rotating bodies that rotate in opposite directions to each other, which is pulled up by rotational force while being in pressure contact with each other, must be able to rotate at least a little three-dimensionally to support the rotating bodies, or be able to rotate against the molded product. The curved pultrusion method according to claim 1, further comprising a shaft that can be bent back and forth.