JPH0140685B2 - - Google Patents

Description

[Detailed description of the invention]

INDUSTRIAL APPLICATION FIELD The present invention applies to door sashes, moldings, etc. (hereinafter simply referred to as "moldings"). ) in multiple dimensions. BACKGROUND TECHNOLOGY Conventionally, as this type of bending device, one is known in which a guide roll element for material bending, which combines a plurality of rolls to form a gap for material insertion, is attached to an outer frame with a universal joint mechanism. (Tokuko Showa 58-
No. 43165). The bending device supports the material bending guide roll element inside the inner frame with pins from the left and right directions intersecting the axis, supports the inner frame inside the outer frame from the top and bottom directions intersecting the axis with pins, and The outer frame is fixed to the rotating plate with screws, and the rotating plate is supported by a trochanter that is pivotally supported on the sliding plate by meshing with a plurality of protrusions provided on the periphery of the rotating plate, and this sliding plate is driven by a motor. By attaching the slide support frame to the machine frame so that it can move up and down with a ball screw mechanism, and by attaching the slide support frame to the machine frame so that it can move in the left and right directions using a ball screw mechanism that is driven by a motor, The bending guide roll element is configured to bend a straight material that is inserted through the bending guide roll element in multiple dimensions. Problems to be Solved by the Invention However, in this bending device, the molding material can be bent by appropriately combining and driving both the vertical ball screw mechanism provided on the slide plate and the horizontal ball screw mechanism provided on the slide support frame. The bending process is performed while taking into consideration the material properties of the material, and the bending fulcrum of the material is a single point where the positioning guide roll element inserts and supports the material in both vertical and horizontal directions. Therefore, even if you control to change the bending curvature of one side (vertically or horizontally) while bending a fixed curve in a multidimensional direction, this effect will also appear on the other bending rate, so it is necessary to change both sides. must be controlled. Therefore, not only is control extremely complicated, but it is also difficult to make adjustments every time the material lot changes.Furthermore, as the molding material is bent into a predetermined cross-sectional shape, the axis is in the longitudinal direction. Therefore, it may happen that the entire body is bent and sent out without maintaining its directness.
When bending this molding material in a longitudinal direction with fine changes in multiple dimensions, control becomes almost impossible. In addition to it,
In this bending device, not only is the device itself large and the manufacturing cost is high, but the slide support frame is equipped with a slide plate, a rotary plate mechanism, a universal joint mechanism, a ball screw mechanism that moves the slide plate up and down, and a motor. , The weight of the slide support frame as well as the slide plate is very large, making it difficult to start up and down, left and right,
It is difficult to perform accurate control due to the influence of inertia when stopping, so the shapes of moldings cannot be formed accurately, and even if the molding material is thin and does not have high rigidity, it is easy to There is also a risk of bending. Furthermore, since the rotating plate meshes with the trochanter through spur gears, the counter-torsional force of the material acts on the trochanter in the opposite direction, and to counter this, the trochanter drive motor must be constructed with a large size. This increases the weight and increases the inertia. SUMMARY OF THE INVENTION An object of the present invention is to provide a bending device for moldings that can be manufactured in a small size and at low cost, and that can reliably perform desired multi-dimensional bending without being affected by inertia. Means for Solving the Problems The bending device for moldings according to the present invention includes left and right support rolls that insert and support the molding material from at least the left and right sides, and a left and right support roll that inserts and supports the molding material from the top and bottom behind the left and right support rolls. A vertical support roll that can swing up or down to support, a stand-up plate that equips each of the support rolls on a plate surface perpendicular to the axial direction of the molding material, a base plate that holds the stand-up plate upright, and A base plate that supports the base plate by inserting a support shaft protruding from the base plate into the plate surface so that the base plate can swing to the right or left; It is comprised of a drive mechanism that swings the plate to the right or left, and a drive mechanism that is mounted on a machine stand on the side of the upper and lower support rolls and swings the upper and lower support rolls upward or downward. Further, a left and right support roll that inserts and supports the molding material from at least the left and right sides, and a vertical support roll that can swing upward or downward that inserts and supports the molding material from the top and bottom behind the left and right support rolls;
A rotating plate equipped with each of the support rolls, a rising plate that supports the rotating plate rotatably in a clockwise or counterclockwise direction on a plate surface perpendicular to the axial direction of the molding material, and holding the rising plate upright. A base plate, a support shaft protruding from the base plate that is inserted through the plate surface to support the base plate so as to be able to swing to the right or left; A drive mechanism that swings the plate to the right or left, a drive mechanism that swings the upper and lower support rolls up or down from the upper and lower support rolls to the side machines, and a drive mechanism that swings the upper and lower support rolls up or down from the upright support rolls to the side machines. The rotary plate can be equipped with a drive mechanism that rotates the rotary plate clockwise or counterclockwise. Function This bending device has support rolls that insert and support the molding material from left and right, top and bottom, respectively, on a base plate that swings left and right on a spindle, and by swinging the base plate left and right, the molding material is Horizontal bending is performed, and in synchronization with this, vertical axis bending is performed by swinging the upper and lower support rolls up or down using separate drive mechanisms. The rolls can be controlled accurately, and the axis of the molding material can be twisted by installing the upper and lower support rolls on a stand-up plate that stands up on a bed plate so that they can rotate clockwise or counterclockwise with a rotary plate. At the same time, you will be able to control it accurately. At the same time, since the drive mechanism for each support roll is installed in a separate position from the base plate on which each support roll is mounted, the weight on the base plate including each support roll can be reduced, and the weight can be achieved as desired without being affected by inertia. The support rolls can be moved to perform the bending process, and since each support roll installed on the base plate is simply assembled to swing or rotate, the entire device can be made compact and inexpensive. Become. Embodiments The following description will be made with reference to the drawings. In this example, when manufacturing a molding for a vehicle, a plastically deformable flat thin strip material such as a stainless steel plate is used as the material, and after bending it into a predetermined cross-sectional shape, the material is bent in the axial direction. Bending is performed to have a plurality of different curvatures in multiple dimensions. As shown in Figure ₁ , there are several types of vehicle moldings that differ depending on the mounting location on _the vehicle body.
It has the shape shown in ~d, and has a triple rail circumference of M _7.
The shapes shown in FIG. 2 e and f are different from each other, and the shape around the fender M ₈ is shown in FIG. 2 g, and the lengths are also different. These moldings for each vehicle are made by forming a metal strip material X using a cold roll forming machine A into a long molding material X' having a predetermined cross-sectional shape as shown in FIG. 4, as shown in FIG. Then, it is fed into the holding devices B and C at a substantially constant speed to be held slidably in the axial direction, and is inserted into the rear bending device D to be bent in multiple dimensions.
It is manufactured as a molding by cutting it into a predetermined length using a traveling cutting device E. As shown in Fig. 4, the molding material holding devices B and C are made of resin with excellent wear resistance and slipperiness such as polyaceter.
A holding device B in the form of an elongated box with a slit b formed therein through which X' is inserted, and a plurality of pairs of vertical rolls c ₁ and c ₂ that hold the molding material X' from at least the left and right sides as shown in FIG. A holding device C arranged in series is incorporated. Among the holding devices,
In the latter C, in order to follow the axial bending of the molding material X' by the rear bending device D and allow it to be slightly deflected, the roll c ₁ is moved as shown in Fig. 6.
It is best to fit a rubber-like elastic material s with a bearing e into the axis of the left and right vertical rolls.
In addition to c ₁ and c ₂ , the molding material X' can be supported by a vertical roll c ₃ that presses the middle part of the molding material X'. These vertical rolls c ₁ ,
C ₂ and c ₃ have a square hole in their center and are rotatably fixed to a cylindrical holder c ₄ which can be divided into lower parts. The cylindrical holder _c4 is inserted into a block-shaped housing _c5 having a circular hole with the same inner diameter as the cylinder, and a threaded rod _c6 connecting the side surface of the cylindrical holder _c4 and the housing is rotated. The rotation of the cylindrical holder _c4 can be adjusted. In addition, c ₇ is a cylindrical holder c ₄
This is the fixing bolt after adjusting the rotation. The bending device D has a machine stand 1 as shown in FIG.
The holding device C is attached to a base plate 13 whose left and right sides are fixedly supported by upright frames 11 and 12 on the plate surface of 0. The holding device C is fixedly attached to the base plate 13, and the bending device D can swing from side to side by pivoting the base plate 14 with a support shaft 15 as shown in FIGS. 8 and 9. installed. A rising plate 16 is integrally attached to the base plate 14 of the bending device D in a vertical shape and perpendicular to the feeding direction of the molding material. , 10, left and right support rolls 20a and 20b are installed to support the molding material X' from at least the left and right sides and hold it in the horizontal direction without being fed from the holding device C. These left and right support rolls 20a and 20b are made of molding material.
It is preferable to attach an intermediate support roll 20c that presses the left and right flange portions or the inner surface side depending on the cross-sectional shape of X'. Those left and right support rolls 20a, 20
b, 20c form a gap between each opposing surface through which a molding material X' having a predetermined cross-sectional shape is inserted, and these support rolls 20a, 20b, 20
The axial direction of the molding material X' held by c can be horizontally bent at least to the right or left. The horizontal bending mechanism is for swinging the bed plate 14 to the right or left using the support shaft 15 as a fulcrum, and this drive mechanism is such that the bed plate 14 is separated from the support shaft 15 as shown in FIG. Guide pins 21a and 21b are attached to the tip side so as to protrude downward so as to be used alternately and selectively, and the guide pins 21a and 21b are selectively engaged with cam grooves 23a and 23b formed on the plate surface of the slide plate 22. The slide plate 22 is configured to move back and forth in the horizontal direction. The slide plate 22 is slidably supported by U-shaped guide frames 24a and 24b on the left and right sides as shown in FIG.
Bracket blades 25 and 2 attached to 0 and 0, respectively.
A plurality of drive cylinders 2 connected in series between 6
By sliding in step 7, the cam groove 2 on the plate surface
3a, 23b, the base plate 14 is centered around the support shaft 15.
is designed to swing to the right or left. In addition to this horizontal bending mechanism, the riser plate 16
is provided with a vertical bending mechanism. The vertical bending mechanism consists of left and right support rolls 20a, 20
Upper and lower support rolls 3 placed behind b and 20c
0a and 30b, and these upper and lower support rolls 3
0a and 30b are a pair of left and right bracket plates 3
1a and 31b, and the 9th and 10th
As shown in the figure, a support bracket 32 that protrudes from the rising plate 16 has support shafts 33a and 33b that are mounted protruding from the sides of each bracket plate 31a and 31b at a position corresponding to the middle of each roll 30a and 30b.
It is configured to be uniaxially supported so as to be swingable up and down by being inserted through the holes a and 32b. Its supporting shaft 3
3a, 33b are bracket plates 31a, 31
b, and is fixed to the support bracket 32 with a key.
A and 32b are rotatably supported by bearings. A drive mechanism 34 for swinging the bracket plates 31a, 31b is connected to one side 32b of these support shafts, as shown in FIG. As a driving source, several cylinders connected in series are used, and the rear end is fixed with a support bracket 35, and a linear motion plate 36 is attached to the front end. A notch 36a is provided in the plate surface of the linear motion plate 36 in an oblique straight line, and a pin 37a protruding from the side surface of the cam plate 37 near the free end is engaged with the notch 36a. The cam plate 37 is attached to a rotating shaft 37b at an eccentric position, and is swingably attached by supporting the rotating shaft 37b with a bearing 38. This rotating shaft 37b and the supporting shafts 33b of the supporting brackets 32a, 32b can be connected by a spline shaft 39 via a universal joint. The spline shaft 39 is expandable and retractable as the base plate 14 swings about the support shaft 15, and in place of this shaft, a flexible shaft 39' formed by twisting steel wire as shown in FIG. 12 is used. You can also use When using this flexible shaft 39', the flexible shafts are arranged on both sides of the drive source, and one is attached to the spindle 33a and the other to the spindle 33b so that the torsion directions are opposite to each other. It is desirable to connect them. In addition to these horizontal bending and vertical bending mechanisms, an axial twisting mechanism can be provided. As shown in FIGS. 8, 9, and 10, the twisting mechanism includes support rolls 20a,
20b, 20c and support brackets 32a, 32
A worm gear 41 and a rotary plate 40 that attach the upper and lower rolls 30a, 30b to the rotary plate 40 via b, and also fit the rotary plate 40 to the rising plate 16, and equip the rising plate 16 with the rotary plate 40.
It is configured to rotate with a worm wheel 42 provided at. As shown in FIG. 7, this worm gear 41 has a rotary drive source 43 which is made up of several drive cylinders connected in series, similar to the horizontal bending and vertical bending mechanisms.
4. It is connected to the support shaft 41a of the worm gear 41 via a pinion 45. The rear end of the rotary drive source 43 is fixed to a support roll 46, and the rack 44 is attached to a rod of a drive cylinder located at the front end. The pinion 45 is rotatably supported by a bearing 47, and rotational force can be transmitted to the worm gear 41 by connecting its support shaft 45a and the support shaft 41a of the worm gear 41 with a spline shaft or flexible shaft 48 via a universal joint. installed on. When the flexible shaft 48 is used, it is preferably configured similarly to the vertical bending mechanism described above. In addition, in order to forcibly twist the axis of the molding material X' with this axial direction twisting mechanism, the support rolls 20a, 20b, 20c are connected to the rolls c ₁ , c ₂ , c ₃ of the holding device C as shown in FIG.
Similarly, a rubber elastic body is fitted into the shaft center, and the lower rolls 30a and 30b are made to have shaft holes that expand from the center to the left and right as shown in FIG. It is best to support the shaft with a loose fit. The bending device configured in this manner is based on the base plate 14 which swings about the support shaft 15 along the cam groove 23a or 23b of the slide plate 22, and has a horizontal bending mechanism, a vertical bending mechanism, and other functions as necessary. Each is equipped with an axial torsion mechanism that operates accordingly. When bending the molding material X' in the horizontal direction, as shown in FIG.
By swinging to the right or left about the support shaft 15, the molding material X' inserted from the holding device C can be curved to the left or right. In addition, when bending in the vertical direction, the upper and lower support rolls 30a, 30b are swung upward or downward about the support shafts 33a, 33b of the bracket plates 31a, 31b to change their posture from the horizontal position upward or downward. Possibly molding material
X' can be curved. Since all of these bending processes are performed by swinging around the support shafts 15, 33a and 33b, the posture can be changed smoothly and the molding material X' can be bent accurately in the axial direction. can. The bending ratio can be set to a desired angle by appropriately adjusting the cylinder strokes of the rotary drive mechanisms 27, 34, that is, by appropriately selectively operating a plurality of connected cylinders.
20c, the axial direction of the molding material X' is continued to the right or left, upward or downward by changing the direction of each gap over time with respect to the molding material X' passing through each gap between the upper and lower support rolls 30a and 30b. It can be bent simultaneously or simultaneously. In addition to these two-dimensional bending operations, as shown in FIG. 15, when twisting the axial direction as necessary, the worm gear 41 is rotated to rotate the rotary plate 40 at a desired angle via the worm wheel 42. Just rotate. When the rotary plate 40 rotates, the left and right support rolls 20a, 20b, 20c and the upper and lower support rolls 30a, 30b, which are integrally attached to the rotary plate 40, pass through the molding material X' and move horizontally, as shown in FIG. In order to change the position diagonally from the vertical position, the axis of the molding material X' can be twisted between the holding device C and the molding material X' can be bent in three dimensions. When bending these two-dimensional or three-dimensional directions, for example, as shown in FIG. 17, vertical bending is applied to the molding, which is formed into a bow shape from a flat surface, and axial twisting is applied as necessary. be able to. For the bending process,
As shown in FIG. 18, the entire length of the molding is divided into imaginary segments 1 to T at arbitrary fixed lengths,
This can be done automatically by operating a horizontal bending mechanism, a vertical bending mechanism, and, if necessary, an axial twisting mechanism for each of the segments 1 to T. As shown in Fig. 3, each segment 1 to T can be detected by a detector F such as a rotary encoder that measures the feeding dimension while feeding the molding material X' into the bending device D, and the detection signal is sent to each drive. Segment 1 by transmitting individually via controller G to sources 27, 34, 43
~Each mechanism can be controlled with a driving amount according to T. For example, when manufacturing the molding _M6 around the window shown in Figure 2a, the total length is about 1500 mm, so it is divided into 30 to 32 or 50 to 60 segments, and each segment is controlled by controller G. By storing the movement amount as shown in Table 1 and operating each mechanism while detecting the segment with the detector F, bending can be performed according to the diagram shown in Table 2.

【table】

Claims (1)

[Scope of Claims] 1. A left and right support roll that inserts and supports the molding material from at least the left and right sides, and a vertical support roll that can swing up or down that inserts and supports the molding material from above and below behind the left and right support rolls. ,
a riser plate equipped with each of the support rolls on a plate surface perpendicular to the axial direction of the molding material;
A base plate that holds this standing plate upright, a base plate that supports the base plate so that it can swing to the right or left by inserting a support shaft protruding from the base plate through the plate surface, and a base plate that supports the base plate so that it can swing to the right or left. A drive mechanism that is installed on the machine base and swings the base plate to the right or left using a support shaft as a fulcrum, and a drive mechanism that is installed on the machine base on the side from the upper and lower support rolls and swings the upper and lower support rolls upward or downward. A bending device for moldings, characterized by comprising a mechanism. 2. A left and right support roll that inserts and supports the molding material from at least the left and right sides, and a vertical support roll that can swing up or down that inserts and supports the molding material from the top and bottom behind the left and right support rolls;
A rotating plate equipped with each of the support rolls, a rising plate that supports the rotating plate rotatably in a clockwise or counterclockwise direction on a plate surface perpendicular to the axial direction of the molding material, and holding the rising plate upright. A base plate, a support shaft protruding from the base plate that is inserted through the plate surface to support the base plate so as to be able to swing to the right or left; A drive mechanism that swings the plate to the right or left, a drive mechanism that swings the upper and lower support rolls up or down from the upper and lower support rolls to the side machines, and a drive mechanism that swings the upper and lower support rolls up or down from the upright support rolls to the side machines. A bending device for moldings, characterized in that it is equipped with a drive mechanism that rotates a rotary plate clockwise or counterclockwise. 3. The bending device according to claim 1 or 2, wherein the left and right support rolls are attached to be tiltable and deflectable by a rubber elastic body attached to the shaft center. 4. The bending device according to claim 1 or 2, wherein the upper and lower support rolls are supported by a roll shaft with a loose fit so as to be deflectable. 5. Claim 1, wherein the above-mentioned upper and lower support rolls are mounted on the upright plate via a support bracket, in which a bracket plate that supports the roll shaft is pivotally supported by a support shaft installed at a position equivalent to the middle of each roll. Or the bending device according to item 2. 6. Claim 5, wherein the support shaft of the bracket plate is connected to a drive mechanism provided on a machine stand on the side of the upright plate via a telescopic spline shaft and a universal joint. Bending equipment. 7. The bending process according to claim 5, wherein the support shaft of the bracket plate is connected to a drive mechanism provided on a machine stand on the side from the upright plate by two bendable flexible shafts. Device. 8 Where the rotating plate is rotatably supported by the rising plate in a clockwise or counterclockwise direction by engaging a worm wheel integrally attached to the rotating plate and a worm gear rotatably equipped on the rising plate. A bending device according to claim 2. 9. The bending device according to claim 8, wherein the worm gear is connected to a drive mechanism provided at a machine stand position on the side of the upright plate via a telescopic spline shaft and a universal joint. . 10 The support shaft of the worm gear is bendable 2
9. The bending device according to claim 8, wherein the bending device is connected to a drive mechanism provided on a side machine stand from the upright plate by a flexible shaft.