JPS60158921A - Bending device of molding or the like - Google Patents

Abstract

PURPOSE:To perform desired axial line bending by providing a pair of rolling rolls which support a material stock by inserting them into the material from its both sides and rocking either of the rolls on its axial line to the right or left side. CONSTITUTION:Bending rolls 10, 11 are rockably mounted on a bed plate 12 by a pin 19 mounted on the plate 12. The pin 19 is positioned by aligning its axial line with the roll axes 10a, 11a, and is selectively attached to the axis 11a side when a material stock is bent leftward, and to the axis 10a side when bent rightward. When bent leftward, a driving cylinder is actuated in state that the axial line of pin 19 is allowed to coincide with the axis 11a of roll 11 and a guide pin 29 is engaged with the cam groove 27 of a slide plate 24. Then the plate 24 moves to move the guide pin 29 along the groove 27, and the plate 12 is rocked leftward around the pin 19. Accordingly, only the roll 10 is rocked to the left side without changing the position of roll 11, to bend the material into a desired curvature while being in press contact with the material.

Description

[Detailed Description of the Invention] Technical Field The present invention relates to the method of manufacturing sashes, moldings, etc. (hereinafter referred to as "moldings") by moving the axis of a molding material bent into a predetermined cross-sectional shape in a multidimensional direction. This relates to a device for bending.

BACKGROUND ART Devices have already been proposed that bend the axis of a molding material in multiple dimensions by swinging left and right bending rolls 1.2 to the right or left with respect to the axial direction of the molding material (for example, , patent application No. 58-56868
issue).

This bending device A (see Fig. 1) has each bending roll 1
, 2 are mounted on the base plate 3 with the insertion interval of the molding material left out, and the base plate 3 is attached to the base plate (not shown) with the pivot 4.
The bending roll 1.2 is held by supporting the bending roll 1.2 by engaging the guide pin 5 protruding from the tip side of the base plate 3 with a cam groove (not shown) of the slide plate and moving the slide plate back and forth. It is configured to be able to swing to the right or to the left with respect to the axial direction of the molding material fed from device B, and it is easy to do because the base plate 3 only needs to be swung left and right around the pivot 4. Since the direction of the gap between the rolls 1.2 can be changed, the molding material can be bent without being affected by inertia.

However, in this bending device, if the pivot 4 is positioned on the center line of the interval between the bending rolls 1 and 2, the contact position of the roll 2 located on the front side, which also receives the molding material X due to the swinging, will be in a straight line from the holding device. Holding device B
During the time from when the molding material When the pair of rolls 1.2 is greatly oscillated to curve the molding material with a large curvature, the load applied to the axis of the molding material increases further, and the axis is bent between the holding device B and the roll 1.2. Because of the risk of bending, it cannot be applied to objects that bend an axis with a small curvature.

DISCLOSURE OF THE INVENTION The present invention provides moldings that can accurately bend the axis of a molding material without placing an unnecessary load on the axis even when the bending roll is oscillated to curve the axis of the molding material with a relatively small curvature. The purpose of the present invention is to provide a bending device.

Namely, 1. Bending processing apparatus A for moldings according to the present invention.
(See FIG. 3) is provided with at least a pair of left and right bending rolls 10.11 through which the molding material X fed from the holding device B is inserted, and the bending rolls 10.1
1 to the right or left with respect to the feeding direction of the molding material on the axis of one of the support shafts 10a, Ila, for example, to bend it to the left (from 10a to 10a).
') When the roll 11 is oscillated around the axis of the support shaft 11a, the contact position of the molding material It is configured to be able to accurately bend the molding material X as a presser roll (third roll).
(see figure).

EXAMPLE 1 The following will be described with reference to FIGS. 4 to 8.

This bending device A is located behind a holding device B, which has a plurality of rolls facing each other on the left and right, which feeds the molding material in a straight line (see Fig. 4), and is designed to maintain the spacing at which the molding material is inserted. It is equipped with at least a pair of left and right bending rolls 10.11 (see Fig. 5), and these bending rolls io and it are disc-shaped and can be received along the sides of the molding material on the peripheral side. It is formed as a stepped roll with dimples. In addition, each bending roll 10.11 has a bracket plate 14 mounted horizontally in the form of a shelf on a rising plate 13 rising from a plywood 12 as a substrate (see Fig. 5-7), and a groove-shaped plate 15 is attached to the plate surface. At the same time as mounting each roll shaft 10a,
It is attached by fitting the pedestals 16 and 17 which pivotally support the lla into the groove so that the position thereof can be adjusted, and fixing them with screws. This bending roll 10.11 is connected to the connecting plate 18
It is swingably mounted on a support pin 19 mounted on the base plate 12 via a support pin 19. The connecting plate 18 has a long hole (not shown).
It is attached to the base plate 12 with a tightening screw (pol) 20.21 so that the position can be adjusted back and forth. The support pin 19 is positioned so that its axes are aligned with the support shafts 10a and lla of the first bending roll 10.11, and when bending the molding material to the left, it is positioned on the side that aligns with the support shaft 11a, while when bending the molding material to the right, it is positioned on the side that aligns with the support shaft 11a. It is possible to selectively attach them to the matching sides. In addition, the support pin 19 has a bearing le on the axis.
a, and is mounted via a bearing 19a on a base plate 22 (see FIG. 4) on which the plywood 12 is swingably mounted. Its swinging mechanism (see Figure 4.6) includes a slide plate 24 that moves back and forth using a drive cylinder 23 that is connected in series and whose stroke can be adjusted.
can be used. This slide plate 24 is supported by guide frames 25 and 26 on the left and right sides below the base plate 22, and curved cams 9927 and 28 are provided on the plate surface on the left and right sides, respectively. The cam groove 27.
28, a bearing 28a at the shaft end.

Guide pins 29, 30 with 30a are operatively engaged, and each guide pin 29, 30 is bolted to the base plate 12 via a support plate 31 (7th rI (See !J).

In the bending machine for moldings configured in this way, when bending the axis to the left, the support pin 19 is positioned so that the axis line is aligned with the support axis of the bending roll 11, and the guide pin 29 is placed in the cam groove of the slide plate 24. The drive cylinder 23 is operated in a state in which it is engaged with the cylinder 27. A plurality of drive cylinders 23 are connected in series, and the tip thereof is connected to the tip of the slide plate 24 and the connecting plate 2.
4a, while the rear end is connected to the base plate C.
Since the slide plate 24 is fixed to the bracket C1 fixed to the bracket C1, the slide plate 24 can be moved according to the desired curvature. When the slide plate 24 moves, the cam groove 2
Since the guide pin 29 slides along the support pin 7, the base plate 12 swings to the left around the support pin 19. At this time, support bin 1
9 is axially aligned with the support shaft 11a of the bending roll 11, so that only the bending roll 10 swings to the left without changing the position of the bending roll 11. Therefore, the molding material traveling from the holding device B can be received by the bending roll 11 without changing the feeding axis position, and the molding material can be bent to a desired curvature while being pressed against the molding material by the bending roll 10 on the opposite side. .

The bending device A can be provided with mechanisms for not only bending the axis of the molding material to the right or left, but also bending it downward or twisting the axis. Among them, the vertical bending mechanism is the bending roll 10.1
A pair of upper and lower rolls 32 and 33 (fourth
．． (see Figure 7.8). Each roll 32.3
3, the support shaft is supported by the left and right bracket plates 34.35, and the bracket plates 34.35 are supported on the left and right side plates 36, 37 by the support shaft 38, so that the support shaft 38 can be rotated. By connecting to a driving source, it is possible to change the direction in which the molding material is inserted upward or downward. In addition, the axis twisting mechanism (see Fig. 5.7.8) is equipped with a vertical bending mechanism on the rotary plate 39, and the rotary plate 39 is rotatably supported by the upright plate 3. The vertical bending roll 32 is connected to a separate drive source to rotate the worm 41 by meshing the driving worm 41 with a worm gear 40 formed on the outer periphery.
．． By rotating 33 clockwise or counterclockwise, the axis of the molding material can be twisted.

Effects of the Invention As described above, according to the molding material bending device according to the present invention, since the bending roll swings to the right or left about the axis, the delivery axis of the molding material traveling from the holding device is By receiving the material without changing it, it is possible to perform a desired axial surface bevel, and it is also possible to perform bending with a large curvature.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing an example of a bending device, Fig. 2 is an operation explanatory diagram showing problems with the same device, and Fig. 3 is an operation showing the basic principle of the bending device for moldings according to the present invention. 4 is an overall perspective view of the device, FIG. 5 is a front view of the device, FIG. 6 is a partially omitted perspective view showing the swing mechanism of the device, and FIG. 7 is a perspective view of the device. 8 is a side view of the device shown in FIG. 8, and FIG. 8 is a rear view of the device. X: molding material, A: bending device, B: holding device, 10, 11: bending roll, 10a. 11a: Support shaft, 19: Swing support pin.

Claims (1)

[Claims] A pair of bending rolls are located behind a holding device that supports the molding material so as to be slidable in the axial direction, and that insert and support the molding material that is continuously fed from the holding device from at least the left and right sides. 1. A bending device for moldings, characterized in that a pair of bending rolls are arranged on the axis of one of the spindles so as to be swingable to the right or left with respect to the feeding direction of the molding material.