JPH0235605B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a roll forming apparatus for forming, for example, a plate material with a flange portion having an irregular cross section whose cross-sectional shape changes in the longitudinal direction.

In the automobile industry, tapered plates, corrugated plates, etc. whose cross-sectional shape changes in the longitudinal direction are used, such as wide door frames and belt moldings with irregular cross sections. By the way, conventionally,
For example, as shown in Figure 1, there are flange parts a on both sides.
When forming the tapered plate material b having the following, the flange portion was processed one side at a time, mainly using a hydraulic press device. Therefore, in such a conventional method, there was a problem that processing efficiency was poor because a pressing step was involved.

The present invention was made in view of such circumstances,
The purpose is to provide a roll forming device that can form plate materials with irregular cross sections with high precision and high efficiency.

Embodiments of the present invention will be described below with reference to the drawings.

The basic structure of the piece and its surrounding mechanism is shown in FIG. As shown in FIG. 2, the upper piece shaft 1 and the lower piece shaft 2 can be rotatably driven between opposing stands 3a and 3b, respectively, and the upper piece shaft 1 is further connected to an elevating mechanism 4.
a and 4b, and the upper piece shaft 1 is provided with an upper stationary piece 5a on the side of the stand 3a, and the stand 3 is provided opposite to the upper stationary piece 5a.
An upper movable piece 5b is provided on the b side so as to be slidable in the axial direction, and a lower stationary piece 6a with a step 6c that meshes with the upper stationary piece 5a is attached to the stand 3 on the lower piece shaft 2.
A lower movable piece 6b with a step 6d is provided on the stand 3b side opposite to the lower stationary piece 6a so as to be slidable in the axial direction. Further, one ends of the upper and lower slide sleeves 7, 8 connected to the piece shafts 1, 2 by keys or splines are fixed to the outer end surfaces of the upper and lower movable pieces 5b, 6b, and the other ends of the slide sleeves 7, 8 are fixed. The end is made to protrude through the stand 3b.

A ball screw 10 driven by the piece sliding motor 9 is provided on the side of the stand 3b in the direction of the piece axis, and a nut 11 is screwed onto the ball screw 10, and a nut 11 is screwed onto the ball screw 10 at the top and bottom of the nut 11, respectively. L-shaped connecting arms 12 and 13 are fixedly installed, and the protruding end of the lower slide sleeve 8 is rotatably connected to the lower connecting arm 13, while the upper connecting arm 1 is rotatably connected to the lower connecting arm 13.
The protruding end of the upper sleeve 7 is rotatably connected to the upper sleeve 2 via an elevating guide member 14.

The lifting guide member 14 and the upper connecting arm 12 are connected as shown in FIG. That is, the disk portion 12a is fixed to the tip of the upper connecting arm 12, and the disk portion 12a is fixed to the lifting guide member 14.
A guide groove 14a is provided in the vertical direction, which allows sliding in the vertical direction and prevents movement in the direction of the bridge axis.

Therefore, when the piece sliding motor 9 is driven,
Due to the threaded movement of the ball screw 10 and the nut 11, the upper and lower connecting arms 12, 13 move in the direction of the piece axis, and this moving force is transmitted to the upper and lower slide pieces 5b, 6b via the slide sleeves 7, 8, respectively. On the other hand, even if the lifting mechanisms 4a and 4b are driven to raise and lower the upper piece shaft 1, the lifting guide member 14 slides in the vertical direction with respect to the upper arm 12, so that no lifting force acts on the ball screw 10. It is structured as follows.

In addition, 15 is a bracket for fixing the motor 9, and 16 is a bracket for fixing the motor 9.
is a joint connecting the motor 9 and the ball screw 10,
17 is a needle bearing.

The above device consists of upper pieces 5a, 5b and lower piece 6.
a, 6b to form the flange portion 18a by sandwiching the plate material 18 between the plates 18 and 6b.
As shown in the figure.

That is, a plurality of (four in the figure) roll forming apparatuses A, B, C, and D are directly arranged at appropriate intervals, and upstream of the forming line of each roll forming apparatus A, B, C, and D, for example, A width detector (not shown) that continuously detects the width of the plate material 18 is installed, and the signals from each detector and the speed signal of the plate material 18 are calculated, and each roll forming device A, B, C , D (not shown) that drives the piece sliding motor 9.
Keep it equipped with the following.

In this state, the corrugated plate 18 is now
When the sheet is about to enter the roll forming apparatus A, the width of the sheet is detected by a width detector installed upstream of the sheet, and this signal and a speed signal are further calculated by the drive control section to enter the roll forming apparatus A. The slide motor 9 is driven, and the ball screw 10 and the connecting arm 1 are
2, 13, by sliding the upper and lower movable pieces 5b, 6b via the slide sleeves 7, 8, etc., the upper and lower movable pieces 5b, 6b are moved between the upper pieces 5a, 5b and the lower pieces 6a, 6.
The spacing between b is continuously adjusted to a predetermined width. As the plate material 18 progresses, the roll forming device A,
The intervals between pieces B, C, and D are continuously controlled, and plate material 1
8 is formed with a flange portion 18a corresponding to the piece spacing. That is, a roll-formed product with an irregular cross section is obtained. In addition, in FIG. 4, the pieces 5a, 5b, 6a, and 6c of each of the roll forming apparatuses A to C (only the upper side is shown in the drawing) are formed with tapered surfaces that become closer to perpendicular to the piece axis in sequence. It has been done. This is plate material 1 that came from roll forming device A.
This is to allow the flange portion 18a to stand up without difficulty until the roller 8 reaches the roll forming device D.

FIG. 5 shows an embodiment of the present invention, in which the upper and lower piece axes 1 and 2 are arranged between pieces 5a and 5b and between pieces 6a and 2, respectively.
Furthermore, the stand 3b is supported on a rotating plate 20 having a worm gear 19 carved on its outer periphery, and a worm 22 attached to a motor 21 for rotating the piece is meshed with the worm gear 19, and the stand 3b is driven by the motor 21. By rotating the right stand 3b via the worm 22, worm gear 19, and rotating plate 20, the upper and lower movable pieces 5
b, 6b can be rotated in the horizontal direction. It should be noted that the same parts as the basic configuration described above are indicated by the same reference numerals.

In the basic configuration, the movable pieces 5b, 6b
was a movement only in the direction of the piece axis, but in the case of the embodiment, the movable pieces 5b, 6b rotate through the rotation of the stand 3b, so as is clear from FIG. , 6b can be controlled so that they are always positioned perpendicular to the ridgeline of the plate material 18, and the flange portion 18a can be formed with even higher precision. FIG. 6B shows how the cross-sectional shape of the plate material 12 changes in each device section when seven roll forming devices are used.

Incidentally, the present invention is not limited to the above-described embodiment, and the arrangement of each part may be reversed. In other words, placing pieces 5a and 6a on the slide side,
Steps 6c and 6d may be formed on the pieces 5a and 5b.

As described above, if the roll forming apparatus of the present invention is used, the pressing process becomes unnecessary and it is possible to control the axis of the movable piece so that it is always located at right angles to the ridge line of the plate material. Shaped plates, corrugated plates, etc. can be formed easily, efficiently, and with high precision.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram of the tapered plate material, Fig. 2 is a partially cutaway front view of the roll forming device, Fig. 3 is an explanatory diagram showing the relationship between the lifting guide member and the connecting arm, and Fig. 4 is the diagram shown in Fig. 2. Fig. 5 is a partially cutaway front view showing an embodiment of the roll forming apparatus of the present invention, and Fig. 6A shows the use state of the apparatus shown in Fig. 5. The plan view and FIG. 6B are explanatory diagrams showing changes in the cross-sectional shape of the plate material. 1, 2... Piece axis, 3a, 3b... Stand, 5
a, 6a... fixed piece, 5b, 6b... movable piece,
7, 8...Slide sleeve, 9...Motor, 1
0... Ball screw, 11... Nut, 12, 13
...Connection arm, 19...Worm gear, 20...
... Rotating plate, 21 ... Motor, 22 ... Worm.

Claims (1)

[Claims] 1. To support an upper stationary piece on one side of the opposing stands, and to support an upper movable piece on the other side so as to be able to slide in the axial direction, and to mesh with each of the upper pieces to form a plate material into a predetermined cross section. A roll comprising a device for supporting a lower stationary piece and a lower movable piece on the opposing stand in correspondence with each of the upper pieces, and for rotating the stand supporting the upper and lower movable pieces on a horizontal plane. Molding equipment.