JPS6354450B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a bending device for bending a molding material such as a molding along an axial direction.

Conventionally, this type of bending device (see Fig. 1) includes support jigs 1 and 2, such as ferrules, which are arranged in front and back with respect to the transport direction X of a forming material A, such as a molding.
is integrally attached to the disc-shaped pedestals 3 and 4, and the pedestal 3 of the one located on the rear side is pivotally connected to the base plate 5 with a pin 6, and the front side edge and the rear side edge of the one located on the front side are connected. A shaft bearing connection is provided by a guide pin 7 that protrudes downward, and the guide pin 7 and a guide pin 8 that protrudes downward from the front edge of the one located on the front side are inserted into horizontally elongated holes 9 and 10 formed in the plate surface of the base plate 5. By engaging each of the guide pins 7 and 8 with the cam groove 12 of the slide base 11 located below, the guide pins 7 and 8 are moved by the back and forth movement of the slide 11.
8 along the cam groove 12 to attach each support jig 1,
2 is configured to swing to the right or left.

In this bending device, the curvature of the molded material A is completely determined depending on the shape of the cam groove 12, but the cam groove 12 does not necessarily follow the desired curvature accurately for bending the molded material such as molding. However, the configuration must be such that fine adjustments can be made between the two.

DISCLOSURE OF THE INVENTION In response to the above-mentioned demands, an object of the present invention is to provide a bending device that allows fine adjustment of the curvature of a molding material such as a molding.

That is, in the bending device according to the present invention,
A long arm to which a support jig such as a base is integrally attached is arranged in front and back in the direction of transfer of the molding material and pivoted on each rear end side, and a vertically long hole is formed between them on the front edge of the one located on the rear side. and a pin planted on the rear end edge of the front arm to engage and connect, and the position of the pin can be adjusted back and forth within the vertical hole, and a guide pin that protrudes downward from the front arm is formed on the base plate. It is configured to be engaged with the cam groove of the slite base through the circular arc-shaped horizontally elongated hole.

Structure of the Invention This will be explained based on the embodiments shown in FIGS. 2 to 4 as follows.

This bending device is equipped with support jigs 20 and 21 each consisting of at least two ferrules, etc., in front and behind the direction X in which a forming material A such as a molding is transferred. Each of the supporting jigs 20 and 21 has a slit in the center in the longitudinal direction of the main body that corresponds to the cross-sectional shape of the molding material A, and the molding material A is passed through the slit.
is formed to support. Also, those 2
0 and 21 are integrally attached to long arms 222 and 23 arranged in series with respect to the transport direction X of the molding material A at intervals, respectively. Each long arm 2
2 and 23 have a base plate 24 on the rear end side (see Figure 3)
It is rotatably mounted on the plate surface of the arm with pins 25 and 26, respectively, and a notch-shaped vertically elongated hole 27 formed at the tip of the rear arm is engaged with a pin 28 planted at the rear end of the front arm. As a result, they are connected and attached to each other in the form of a link arm. Further, in the elongated arm 23 located on the front side, a guide pin 29 protrudes downward from the lower surface of the distal end side, and is inserted into an arc-shaped horizontally elongated hole 30 formed in the plate surface of the base plate 24, and the lower end of the axis Slide plate 11 located below
The cam groove 12 (see FIG. 1 for both 11 and 12) is attached so as to engage with the cam groove 12 (see FIG. 1 for both 11 and 12).

In this bending device, the pin 28 is connected to the long arm 2.
A plurality of screw pins are provided on the plate surface of the elongated arm 23 in order to make the pins movable within the range of the longitudinal hole 27 formed in the elongated arm 2. screw holes 31, 3
2 and 33 are provided (see Fig. 4).

Effect of the Invention To explain it with reference to FIG. 5, in this bending device, the guide pin 2 of the long arm 23
9 to the cam groove 12 by moving the slide plate 11 back and forth.
By guiding the long arm 23 along the support pin 26, the rotation is transmitted to the long arm 22 via the planting pin 28, and the support pin 25 is rotated. The long arm 22 is rotated around the center. In this rotation, the long arms 22, 23
The curvature formed by molding material A
The support jigs 20 and 21 such as the caps are swung according to the curvature.

Assuming that the rotation angle of the long arm 23 moving along the horizontally long hole 30 is constant, and changing the position of the planting pin 28 to the screw holes 31, 32, and 33, the angle at which the long arm 22 can rotate will change. falls within the range indicated by straight lines a, b, and c. Therefore, the curves formed by the long arms 22 and 23 can be changed within this range,
In addition to depending on the shape of the cam groove 12, the degree to which the support jigs 20 and 21 of the cap are oscillated can be adjusted on the long arms 22 and 23 side as well.

Effects of the Invention As described above, according to the bending device for molding materials such as moldings according to the present invention, the curve formed by the long arms can be changed by changing the position of the pin that connects the long arms. Even if the cam groove is not formed in the required curve, the molding material can be adjusted to be curved to a desired curvature.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view of a bending device according to a conventional example, Fig. 2 is an exploded perspective view of a bending device according to the present invention showing the relationship between a support jig and a long arm, and Fig. 3 is an exploded perspective view of the bending device according to the present invention. FIG. 4 is a perspective view showing the relationship between the base plate and the elongated arm, FIG. 4 is a sectional view of the same side, and FIG. 5 is a schematic explanatory view showing the rotating state of the elongated arm. A: Molding material, 20, 21: Support jig, 11:
Slide plate, 12: Cam groove, 22, 23:
Long arm, 24: base plate, 25, 26: arm axis, 27: vertically elongated hole, 28: pin, 29: guide pin, 30: horizontally elongated hole, 31, 32, 33: pin position change screw hole.

Claims (1)

[Claims] 1. Having at least two supporting jigs such as caps that can insert molding materials such as moldings in the front and back, and swinging each of the supporting jigs to the right or left along the cam grooves of the slide plate that moves back and forth. According to
In a bending device that bends the axis of a molded material to a desired curvature, each of the above-mentioned support jigs is integrally attached to a long arm arranged in series with respect to the direction of transport of the molded material, and a The end side is pivotally attached to the base plate, and the arms are connected by engaging a vertical hole provided at the tip side of the arm located on the rear side and a pin planted on the rear end side of the arm located on the front side. At the same time, the position of the pin can be changed back and forth within the vertical hole, and the guide pin protrudes downward from the tip of the arm located on the front side, and the guide pin is formed on the plate surface of the base plate. 1. A bending device for a molded material such as a molding, characterized in that it is configured to engage with a cam groove of a slide plate located below through an arc-shaped horizontally elongated hole.