JPS59183936A - Roll forming device - Google Patents

Abstract

PURPOSE:To produce a flanged plate material having a sectional shape changing in the longitudinal direction with high accuracy and working efficiency by making movable one of stands attached with upper and lower dies having steps at the top and the bottom and passing the plate material between the upper and lower dies. CONSTITUTION:A roll forming device for a flanged (a) plate material (b) having the sectional shape changing in the longitudinal direction is provided with two sets of upper dies 5a, 5b and lower dies 6a, 6b, of which the gaps can be changed by sliding sleeves 7, 8, between stands 3a and 3b. Steps 6c, 6d for forming the flange part are respectively preliminarily provided to the dies 6a, 6b. Plural units of such roll forming devices are disposed on a straight line at a suitable interval. A plate material 16 is inserted between the rotating dies 5a, 5b and the dies 6a, 6b and the flange part 16a is formed by the steps 6c, 6d of the dies 6a, 6b. Either one or both of the stands 3a, 3b attached with the upper and lower dies are moved by means of a motor 14 to adjust the gap between the respectively upper and lower dies facing each other, by which the flanged plate material having the different sectional shape in the longitudinal direction is easily produced.

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 plate materials whose cross-sectional shape changes in the longitudinal direction are used, such as wide door frames and heald moldings with irregular cross sections. by the way,
Conventionally, when forming a tapered plate material having flanges a on both sides, as shown in FIG. 1, for example, a hydraulic press or the like was mainly used to process the flanges on one side at a time. Therefore, in such a conventional method, there was a problem that processing efficiency was poor because a pressing step was involved.

The present invention has been made in view of this point, and an object of the present invention is to provide a roll forming apparatus that can form a plate material having an irregular cross section with high precision and high efficiency.

Hereinafter, the present invention will be described in detail with reference to the drawings.

As shown in FIG. 2, the upper piece shaft 1 and the upper piece shaft 2 are rotatably driven between opposing stands 3a and 3b, and the upper piece shaft 1 is further supported so as to be movable up and down by lifting mechanisms 4a and 4b, In addition, the two-piece shaft 1 is provided with an upper piece 5a on the side of the stand 3a, and an upper piece 5b is provided on the side of the stand 3b opposite to the upper piece 5a so as to be slidable in the axial direction.
In this case, a step 6C (ζJ lower a is provided on the stand 3a side that meshes with the upper piece 5a, and a step 6 d (, J unadjustable 6b) is provided on the stand 3b facing the upper piece 6a.
is provided so as to be slidable in the axial direction. Furthermore, the upper and lower slide sleeves 7 are connected by splines or the like.
．． One end of the slide sleeve 7.8 is fixed, and the other end of the slide sleeve 7.8 projects through the stand 3b. stand 3
A motor 9 fixed on the shaft 2 rotates the shaft 2 by meshing a pinion gear (not shown) with a pinion gear 1o fixed to the end of the shaft 2. On the other hand, since the pinion gear 1o meshes with a pinion gear 11 fixed to the end of the single shaft 1, the single shaft 2 rotates in a direction different from that of the single shaft 1.

When the shaft 1.2 rotates in this manner, the pieces 5a, 6a and the pieces 5b, 6b rotate together with it. still,
The stand 3a is fixed on the machine base 13 by poles 1 to 12, while the other stand 3b is made slidable in the direction of the arrow in FIG. 2 by a motor 14 fixed on the machine base 13. Specifically, by screwing a male screw (not shown) driven by the motor 14 into a female screw (not shown) fixed to the stand 3b, the rotation of the motor 14 is converted into the direction of movement of the stand 3b. However, if a return ring (not shown) is used in the motor 14, the above conversion is not necessary. Further, reference numeral 15 designates needle hair rings disposed at the shaft supporting portions of each of the stands 3a and 3b.

In the roll forming apparatus of the present invention having such a structure, the upper piece 5
The flange portion 16a is formed by sandwiching a plate 416 between the roll forming apparatus a and 5b and the lower pieces 6a and 6b, and the specific usage of this roll forming apparatus is shown in FIG.

That is, a plurality of (four in the figure) roll forming apparatus A
, B, (, D are lined up in a straight line at appropriate intervals, and a width detecting section (Fig. (not shown), and further calculates the signals from each detection unit and the speed signal of plate 'fA' 16 to form each roll forming device A,,B,...
Drive control unit that drives motors 14 of C and D (not shown)
Keep it equipped with the following.

In this state, when the corrugated plate material 16 is about to enter the roll forming apparatus A, the width of the plate is detected by the width detector installed upstream of the plate material 16, and this signal and the speed signal are further detected. It is calculated by the drive control section and the roll forming device A
The motor 14 is driven and the stand 3b slides, so the upper and lower movable arms 5b and 6b also slide at the same time, and the intervals between the upper pieces 5a and 5b and between the lower pieces 6a and 6b are continuously maintained at a predetermined width. is adjusted to Then, as the plate material 16 advances, the gap between the pieces of the roll forming devices A, B, C, D is continuously controlled, and the plate material 16 is formed with a flange portion 16a corresponding to the piece spacing. That is, a roll-formed product with an irregular cross section is obtained. In addition, in Fig. 3, each section from the roll forming device to C (only the upper side is shown in the drawing)
The pieces 5a, 5b, 6a, and 6b are formed with tapered surfaces that are successively perpendicular to the piece axis. This is so that the flange portion 16a can be easily raised up while the plate material 16 entering from the roll forming device A reaches the roll forming device.

FIG. 4 shows another embodiment of the present invention, in which the upper and lower shafts 1.2 are separated between pieces 5a and 5b and between pieces 6b, respectively.
Further, the stand 3b is supported on a rotating plate 18 having a worm gear 17 carved on its outer periphery, and a worm 20 driven by a motor 19 is connected to the worm gear 17.
The worm 20 is engaged with the worm 20 by driving the motor 19.
By rotating the right stand 3b via the worm gear 17 and rotating plate 18, the upper and lower pieces 5b and 6b can be rotated in the horizontal direction. In this embodiment, the left-hand stand 3a also rotates in the same way, and here, the same reference numerals as in the first embodiment indicate the same parts.

In the first embodiment, the pieces 5b and 6b moved only in the uniaxial direction, but in the case of the second embodiment, the pieces 5b and 6b
, 6b rotate through the rotation of the stand 3b, so the piece 5
It becomes possible to control the axes of b and 6b so that they are always perpendicular to the ridge line of the plate material 16, and it is possible to form the flange portion 16a with even higher precision.

However, the present invention is not limited to the embodiments described above, and the arrangement of each part may be reversed.

Furthermore, steps 6c and 6d may be formed on the pieces 5a and 5b.

Further, the target product to be molded can be formed not only in the cross-sectional shape shown in FIG. 1, but also in other cross-sections by adjusting the number of pieces of the roll-forming device to correspond to the required product cross-section.

As explained above, if the roll forming apparatus of the present invention is used, a pressing step is not required, so tapered plates, corrugated plates, etc. can be formed easily, efficiently, and with high precision.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram of a tapered plate material, Fig. 2 is a partially cutaway front view of the roll forming device of the present invention, Fig. 3 is a plan view showing the usage state of the device of the present invention, and Fig. 4 is another embodiment. FIG. 2 is a diagram similar to FIG. 2 illustrating an example; 1.2...1 axis 3a, 3b...stand 5
a, 5b...upper piece 6a, 6b...lower arm patent applicant Shiraki Metal Industry Co., Ltd. Commissioner of the Patent Office 1. Indication of the case 1982 Patent application No. 57397 2, Name of the invention Roll forming device 3, Person making the amendment Relationship to the case Patent applicant address 2-5 Kirihara-cho, Kyozawa-shi, Kanagawa Prefecture, 2-5, Attached sheet with details of the amendment As per (no change in content)

Claims (1)

[Claims] (1) A roll forming apparatus characterized in that a pair of upper and lower pieces is supported on each of the opposing stands, and one or both of the stands can be slid in the axial direction. (2. The roll forming apparatus according to claim 1, comprising a device for rotating either or both of the stands on a horizontal plane.