JPH02117717A - Manufacture of molding or the like - Google Patents

Abstract

PURPOSE:To bring the axial direction of a stock to plural-dimensional bending as desired by a simple program by dividing a long-sized molding stock into plural overhead segments, detecting each segment and controlling separately each axis bending mechanism. CONSTITUTION:By dividing the overall length of a long-sized molding stock, plural overhead segments 1-T are derived. This molding stock X' is fed to holding devices B, C and held so as to be slidable in the axial direction, and also, inserted through a bending device D and brought to bending in the plural- dimensional directions, and cut by a running and cutting device E. On this way, a feed-in dimension is measured by a detector F between the holding devices B, C. Its detecting signal is operated instantaneously by a controller G, and also, a control signal is sent to each driving source of a horizontal direction bending mechanism, a vertical direction bending mechanism, etc., and they are controlled to the driving quantity corresponding to the segments 1-T. Moreover, the cutting device E is synchronized and run.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is capable of producing door sashes, moldings, etc. (hereinafter referred to simply as " The present invention relates to a method for manufacturing moldings that is commonly used for manufacturing moldings.

Conventional technology Conventionally, in order to manufacture this type of moldings, a bending device is used in which a guide roll element for bending the material, in which a plurality of rolls form an insertion gap for the molding material, is equipped on the outer frame with a flexible weaving mechanism. It is known to be applied (Japanese Patent Publication No. 58-43165).

The bending device supports a guide roll element for material bending inside an inner frame with bins from the left and right directions intersecting the feeding axis direction of the molding material, and supports this inner frame inside the inner frame from the left and right directions intersecting the feeding axis direction of the molding material. The rotary plate is supported by a bottle inside the outer frame from above and below, and the outer frame is fixed to the rotary plate with screws, and the rotary plate is pivotally supported on the slide plate by meshing with a plurality of protrusions provided on the periphery of the rotary plate. The slide plate is supported by a trochanter and is attached to the slide support frame so that it can move up and down using a ball screw mechanism that is driven by a motor.The slide support frame can also be moved left and right using a ball screw mechanism that drives the slide support frame to the machine frame using a motor. When installed, the linear molding material that is inserted from the guide roll element for material delivery positioning to the guide roll element for material bending is bent in multiple dimensions.

Problems to be Solved by the Invention However, this bending device performs molding according to an X-Y program that appropriately combines 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 by taking into consideration the material characteristics of the molding material by being driven by the commands of a detector that measures the feeding dimensions of the material, so the program is complicated and it is difficult to perform accurate bending. is difficult. In addition, during bending, the bending fulcrum of the material is the single point where the positioning guide roll element inserts and supports the molding material in both vertical and horizontal directions, so bending in multiple dimensions with a constant curvature is possible. Even if you control to change the bending curvature of one side (up/down or left/right) during the process, this will affect the bending rate of the other side, so you have to control both, which makes the control extremely complicated. Not only that, but it is also difficult to make adjustments every time the material lot changes.Moreover, as the molding material is bent and formed into a predetermined cross-sectional shape, it is difficult to maintain the straightness of the axis of the molding material in the longitudinal direction. Since the molding material may be fed out with the entire part bent without being bent, it is almost impossible to control when bending the molding material in a longitudinal direction with fine changes in multiple dimensions. In addition, in this bending device, the slide support frame is equipped with a single rotation plate mechanism for the slide plate, a free weaving mechanism, a ball screw mechanism that moves the slide plate up and down, and a motor, so the weight of the slide plate as well as the slide support frame is is very large, and it is difficult to control accurately due to the influence of inertia when starting and stopping vertically, horizontally, and horizontally. This makes it difficult to form moldings accurately, and as a result, the molding material is thin and has high rigidity. If it does not have this, there is a risk that it may easily bend. In addition, in this bending device, a cutting device is placed at the rear to successively cut the axially oriented molding material to a fixed size. Because it is not necessarily oriented along the axis,
Even the cutting device cannot accurately cut the molding material into a predetermined length corresponding to the bent shape of the molding material.

The present invention provides a molding type that can be manufactured by cutting the molding material into a predetermined length according to the bending shape and cutting the molding material into a predetermined length according to the bending shape. The purpose is to provide a manufacturing method.

Means for Solving the Problems In the method for manufacturing moldings according to the present invention,
The entire length of a long molding material bent into a predetermined cross-sectional shape is divided into arbitrary fixed lengths to obtain multiple imaginary segments in advance, and the molding material is inserted and supported along the axial direction. The amount of movement of each axial line bending mechanism of the bending machine is set to the value of an imaginary segment, and each segment is detected by a detector as the molding material is continuously fed, and the bending mechanism responds to the commands of the detector. Each axis bending mechanism of the bending device is individually controlled to move by a predetermined movement amount, and the axial direction of the molding material is bent in a multidimensional direction with a desired continuous different curvature. The cutting device is driven in synchronization with the delivery of the molding material, and the cutting device is driven to cut the continuous molding material into a predetermined length after the molding material has traveled a predetermined distance based on the command from the detector. ing.

Function: In this manufacturing method for moldings, the molding material is bent according to a program that moves each bending mechanism individually for each segment, so the program is not only extremely easy to set, but also easy to use. Since each bending mechanism is controlled according to the movement 111, the axial line of the molding material can be accurately bent in two or three dimensions, and the molding material can be bent to a predetermined length according to the predetermined bending shape. You will also be able to accurately cut to size.

Example The following description will be made with reference to the drawings.

In this example, when manufacturing a molding for a vehicle, the material is a flat thin plate-shaped strip material that can be plastically worked, such as a stainless steel plate, and the surface is pre-synthesized to prevent scratches. It is advisable to attach a resin protective film along the longitudinal direction. This strip material is bent in advance into a predetermined cross-sectional shape to obtain a molding material, and then the axial direction is multi-dimensionally bent using a bending machine. Moldings are manufactured by bending the molding material to a plurality of different curvatures, then cutting the molding material along its axis and cutting it to a specified size. There are several types of vehicle moldings that differ depending on where they are attached to the vehicle body, and their cross-sectional shapes vary depending on the area around the front or back window, trip rail, or even fender, and the length also differs. It is something. For each of these vehicle moldings, as shown in Figure 1, when a metal strip material X is used, it is formed into a long molding material X' with a predetermined cross-sectional shape in a cold roll forming machine A. At the same time, it is rotated at a substantially constant speed in the first direction. It is fed into the second holding devices B and C to be held slidably in the axial direction, and also inserted into the rear bending device to be bent in multiple dimensions, and then cut into a predetermined length by a traveling cutting bag ftE. It is manufactured as a molding by cutting. During this process, a molding material X is placed between the first holding device B and the second holding device C.
A detector F is disposed to measure the length of the blade to be sent out, and a controller G drives and controls the bending device and the traveling cutting device E in accordance with the measured length.

In the warehouse, the molding material holding devices B and C are made of elongated surfaces made of a resin with excellent wear resistance and smoothness such as polyacetal, and have a slit b through which the molding material X' is inserted, as shown in Fig. 2. a first holding device B, a pair of left and right horizontal rolls C'l*02 that hold the molding material X' from at least the left and right sides as shown in FIG. 3, and an intermediate horizontal roll that presses the left and right flanges or inner surfaces. C
A second holding device C having a plurality of sets of 5 arranged in series is incorporated. Among the holding devices, a detector F such as a rotary encoder that rotates according to the feed amount by contacting the molding material X' can be placed in front of the second holding device C. It is possible to measure the feeding amount of the molding material X' which has been bent into a predetermined shape but whose axial direction remains straight.

controller G according to the length measured by the detector F.
As shown in FIG. 4, the bending device whose drive is controlled by
The base plate 13 fixedly supported by 2 is provided with a holding device C of 342, respectively. This second holding device C
is fixedly attached to the base plate 13, and the bending device is attached so as to be swingable from side to side by pivoting the base plate 14 with a support shaft 15, as shown in Fig. 5.6. . The stand plate 1 is attached to the base plate 14 of the bending device.
6 is vertical and is integrally mounted perpendicular to the feeding direction of the molding material, and a second holding device C is installed on the substantially central portion of the plate surface of this rising plate 16 as shown in Fig. 5.6. Left and right support rolls 20a and 20b are installed to support the molding material X' fed in from at least left and right sides and hold it in the horizontal direction. It is preferable to attach an intermediate support roll 20c to the left and right support rolls 20a, 20b to press the left and right flange portions or inner surfaces depending on the cross-sectional shape of the molding material X'. Those left and right support rolls 20a, 20b.

Reference numeral 20c forms a gap between each opposing surface through which the molding material X' having a predetermined cross-sectional shape is inserted, and the axial direction of the molding material X' held between the supporting rolls 20a, 20b, and 20c is at least right or left. It is configured so that it can be bent horizontally. The horizontal bending mechanism is for swinging the base plate 14 to the right or left using the support shaft 15 as a fulcrum, and this drive mechanism is for rotating the base plate 14 as shown in FIG.
Guide bins 21a, 2 are provided on the tip side spaced apart from the support shaft 15.
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 to horizontally move the slide plate 22. It is configured to move back and forth. As shown in FIG. 4, the slide plate 22 has a U-shaped guide frame 24a on the left and right sides.

A plurality of drive cylinders 27 are connected in series between bracket plates 25 and 26, which are slidably supported by bracket plates 24b and attached to the rear end side of the plate 22 and the machine base 10 below the base plate 13, respectively. By sliding the cam groove 23a on the plate surface.

The base plate 14 is configured to swing to the right or left about the support shaft 15 along the axis 23b.

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
b, upper and lower support rolls 30a arranged behind 20c,
30b, and these upper and lower support rolls 30a, 30b
is supported by a pair of left and right bracket plates 31a and 31b, and each roll 30 is supported as shown in FIG. 6.7.
Each bracket plate 31 at a position corresponding to the middle of a and 30b
a.

Support brackets 32a, 3 protrude from the rising plate 16 with support shafts 33a, 33b attached protruding from the sides of 31b.
2b, it is configured to be uniaxially supported so that it can be displaced up and down, preferably swingable. Its supporting shaft 3
3a, 33b are fixed to bracket plates 31a, 31b with keys, and support brackets 32a, 32b
is rotatably mounted on a bearing. One side of these spindles 3
2b has a bracket plate 31 as shown in FIG.
A drive mechanism 34 that swings a and 31b is linked.

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 3 is formed diagonally in the plate surface of the linear motion plate 36.
6a, and a cam plate 37 is provided in the notch 36a.
A protruding pin 37a is engaged with the side surface near the free end. 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 are connected to each other via a universal joint by splicing the shaft 39.
It can be connected with . The spline shaft 39
is expandable and retractable as the base plate 14 swings about the support shaft 15; instead of this shaft, a flexible shaft made of steel wire may be used. When using this flexible shaft, it is recommended to arrange the flexible shafts on both sides of the mg source, and connect one side to the support @33a and the other side to the support shaft 33b so that the twist directions are opposite to each other. desirable.

In addition to these horizontal bending and vertical bending mechanisms, an axial twisting mechanism can be provided.

The torsion mechanism includes support rolls 20a, 20b, 20c and support brackets 32a, 3 as shown in Figure 5.6.7.
Upper and lower rolls 30a via 2b.

30k) is attached to the rotating plate 40, and the rotating plate 40 is fitted to the rising plate 16, and the rotating plate 40 is rotated by a worm gear 41 provided on the rising plate 16 and a worm wheel 42 provided on the rotating plate 40. It is configured like this. As shown in FIG. 4, this worm gear 41 uses 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, and the rotary drive source 43 is connected to a rack 44. The rear end side of the 0-rotation drive source 43, which is connected to the support shaft 41a of the ohm gear 41 via a pinion 45, is fixed to a support plate 46.
Further, the rack 44 is attached to the rod of the drive cylinder located on the distal end side.

Binion 45 is rotatably supported by bearing 47, and rotational force can be transmitted to worm gear 41 by connecting its support shaft 45g and support shaft 41a of worm gear 41 with a spline shaft or flexible shaft 48 via a universal joint. installed on.

The bending device configured in this manner has a horizontal bending mechanism, a vertical bending mechanism, and the necessary Each is equipped with an axial torsion mechanism that operates according to the When the molding material X' is bent in the horizontal direction by the bending device, the left and right support rolls 2
By changing the direction of the gaps a, 20b, and 20c by swinging the plywood 14 to the right or left about the support shaft 15, the second
The molding material X' inserted through the holding device C can be curved to the left or right. In addition, for vertical axis targeting, the upper and lower support rolls 30a and 30b, which are similarly equipped via a rotary plate 40 serving as a base, are moved upwardly or downwardly around the support shafts 33a and 33b of the bracket plates 31a and 31b. The molding material X' can be curved by changing its posture upward or downward from the horizontal position by swinging. 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. .

The bending rate can be adjusted to a desired angle by appropriately adjusting the cylinder stroke of the rotary drive mechanism 27, 34, that is, by appropriately selectively operating a plurality of connected cylinders. With this angle adjustment, the left, right and middle support rolls 20
a, 20b, 20c, upper and lower support rolls 30a, 30b
is molding material X' by changing the direction of each gap over time with respect to
The axial direction of ' can be bent continuously or simultaneously to the right or left, upward or downward. In addition to these two-dimensional bending operations, when bending is performed by twisting the axial direction as necessary, the worm gear 41 may be rotated to rotate the rotary plate 40 at a desired angle via the worm wheel 42. 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, penetrate the molding material X' and change the position diagonally from the horizontal or vertical position. In order to change the shape, the axis of the molding material X' can be twisted between the holding devices ch to bend it in three dimensions as well.

When performing these two-dimensional or three-dimensional bending operations, for example, vertical bending may be applied to a molding formed into an arcuate shape from a plane, and axial torsion may be applied as necessary. For the bending process, the 9th
As shown in the figure, the entire length of the molding is divided into imaginary segments 1 to T at arbitrary fixed lengths, and this segment 1
Each segment 1 to T can be performed by operating a horizontal bending mechanism, a vertical bending mechanism, and, if necessary, an axial twisting mechanism by a predetermined deflection amount for each segment 1 to T. As shown in Fig. 1, the bending material X' is detected by a detector F such as a rotary encoder that measures the feeding dimension while being fed into the bending device, and the detection signal is instantaneously calculated by the controller G. At the same time, by individually transmitting a drive stop control signal to each drive source 27, 34, 43, each mechanism can be controlled to the drive amount corresponding to segments 1 to T without any instantaneous delay.

For example, when manufacturing moldings around windows, the total length is about 1500mm, so
By dividing the segment into 32 or 50 to 60 segments, storing the amount of movement for each segment in the controller G as shown in Table 1, and detecting the segment with the detector F, each mechanism is instantaneously operated to produce the result as shown in Table 2. Bending can be performed according to the diagram.

Note that in order to obtain moldings with the same cross-sectional shape of the molding material but with different bending shapes, a separate program from the above-mentioned program is used for the main body. Further, by replacing the slide plate with a slide plate having a cam groove of a different shape, setup can be easily and quickly performed.

A cutting device E is arranged behind the bending device to cut the molding material X', which has been bent in multiple dimensions as desired in the axial direction, to a specified size. This cutting device E includes a fixed blade 50 and a movable blade 6 as shown in Fig. 10.11.12.
0. (In FIG. 10, the holding device and the bending device are shown in a simplified manner to avoid complication.) The fixed blade 50 is connected to the gate-shaped support frame 7.
It is attached integrally with a support plate 71 fixedly attached to the blade, and the blade thereof is provided with an opening 51 through which the molding material X' is inserted. In this case, the hole 51 may be formed as a punching hole formed by stamping the plate surface 7 of the fixed blade 50 into a substantially horizontally oblong oval shape if the lateral deflection of the axis line accompanying the feeding of the molding material X' is small. When the width is large, the guide arms 52a, 52 are provided in a notch shape and are inserted from the upper and lower edges.
It is preferable to install the opening 5 protrudingly so that it can guide the lateral vibration tolerably over the entire width.
1 serves as a cutting edge 53, and the cutting edge 53 is formed to correspond to the shape of the lower surface of the molding material X' so as to receive the lower surface side of the molding material X'. In contrast to the fixed blade 50, the movable blade 60 is attached to the tip of a rod of a drive cylinder 61 mounted on a support frame 70 so as to be able to slide up and down. The lower edge of the movable blade 60 serves as a cutting edge 62, and the molding material X' can be cut between this cutting edge 62 and a notch 53 formed at the lower edge of the opening of the fixed blade 50.

The movable blade 60 is provided with a notch 63 that aligns with the opening 51 of the fixed blade 50 when the blade reaches the bottom dead center. This notch 63 is a horizontally long one with the sides of the blade open, and is relatively narrower than the width at which the axis oscillates laterally within the opening 51 of the fixed blade 50 as the molding material X' is fed. is formed. The support frames 70 for each of these months 50 and 60 have side plates 73 standing up on the left and right sides of the bottom plate 72.
It is attached to a73b via a slide plate 74m and a flap 4b. Slide plate 74a.

The flap 4b is fitted into the side plate flap 3a, the receiving groove 75a of the flap 3b, and the flap 5b.
The height can be adjusted using adjustment bolts 7a and 7b screwed in between. In addition, after the height adjustment, the side plate 3m, 73b long hole 78a..., the side plate 8b...
The bolts 79a..., 79b...
...It is installed so that it can be positioned and fixed. For this slide plate 74a74b, the support frame 70
is attached to the left and right flanges so as to be swingable about pivots 80a and 80b as fulcrums. The axis 80a,
80b is the support frame 70. Drive cylinder 61, support plate 1. Fixed blade SO, movable blade 60. In order to determine the installation position of the other mechanical parts as a whole slightly above the center of gravity, and to make this balance adjustable, screw shafts 81a and 81 are installed at the front and rear of the support frame frame 0, as shown in FIG.
The support frame 70 may be equipped with weights 82a, 82b whose positions can be adjusted at 1b, and the support frame 70 has bins 83a, 83b protruding from the plate surfaces of the slide plates 74a, 74b.
An arc-shaped horizontally elongated hole 84 is formed in the plate surface of the left and right flange parts.
a, 84b, the swinging is guided within a certain distance, and the tension spring 86 is mounted across between the support plate 71 of the fixed blade 50 and the stopper plate 85 mounted upright on the bottom plate 72. It is installed so that the return movement can be performed quickly. Further, the stop position of the support frame 70 is determined by the bolt 8 protruding from the stopper plate 85 in the orthogonal direction.
It is also possible to adjust the amount of stride in step 7.

As shown in FIG. 14, a presser plate 90 is provided at the bottom dead center of the movable blade 60 based on the horizontal flange portion 50a of the fixed blade 50. This holding plate 90 has a planting shaft 91.9 inserted through the horizontal flange portion 50a of the fixed blade 50.
Spring 92.9 installed in 1 and fitted on its axis
It is mounted so that it can be moved up and down by supporting it with 2.

Further, the movable blade 60 controls its downward movement with a detector F that detects the length of the material, such as a rotary encoder that drives and controls the bending device, and a valve H is activated via the controller G in response to a command from the detector F. can be configured to operate. The upward movement can be controlled by a detector 93 such as a limit switch that detects the lateral vibration of the soldering material X'.
The cylinder stroke of the drive cylinder 61 may be retracted by activating the cylinder.

In this cutting device, when the detector F detects that a predetermined length of molding material has been fed into the bending device,
The movable blade 6o moves downward by operating the valve H via the controller G in response to the command.At this time, the molding material X' has passed through the opening 51 of the fixed blade 50, and its axial direction is Although it is curved with a predetermined curvature, it is located within the opening 51 at the origin of lateral deflection. When the movable blade 60 moves downward, the molding material X' is pressed and cut by the cutting blade 53 of the opening 51 and the cutting blade 62 formed at the lower edge of the blade of the movable blade 60. During this press-cutting, as shown in FIG. 14, when the molding material It swings in synchronization with the feeding of the molding material X'. The swinging is performed at a certain distance until the movable blade 60 moves downward and the notch 63 of the blade aligns with the opening 51 of the fixed blade 50, and the movable blade 60 descends to the bottom dead center. When the notch 63 is aligned with the opening 51 of the fixed blade 50, the notch 6
3 receives the molding material X', the fixed blade 50
The movable blade 60 quickly returns to its original position by the tensile force of the tension spring 86. When this cutting operation is completed, the molding material X', which is being fed subsequently, runs inside the opening 51 of the fixed blade 50 and the notch 63 of the movable blade 60. However, during the travel, the axis of the molding material X' begins to oscillate laterally. At the farthest edge position, the axis of the molding material X' deviates from the notch 63 of the movable blade 60, and the detector 9
3, the movable blade 60 is moved upward by the backward stroke of the drive cylinder 61 by operating the valve H via the controller G based on the command. In this way, one cutting process is completed by the upward movement of the movable blade 60, and the movable blade 60 continues until the molding material X' is fed a predetermined length and detected by the detector F.
will wait. In the embodiment described above, the fixed blade 50 and the movable blade 60 were configured to swing in synchronization with the feeding of the molding material X', but by moving them back and forth in the horizontal direction, the molding material X' is It can be configured to be movable in synchronization with feeding.

Effects of the Invention As described above, according to the method for manufacturing moldings according to the present invention, the molding material is accurately bent in multiple dimensions, and then the molding material is subsequently cut to size. can be manufactured extremely efficiently and accurately.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a device applied to manufacturing moldings according to the present invention, Fig. 2 is a partially cutaway perspective view of a holding device installed and arranged in the same manufacturing device, and Fig. FIG. 4 is a front view showing another holding device installed and arranged in the fourth
The figure is a perspective view showing the entire bending device installed in the device, FIG. 5 is a front view of the bending device, FIG. 6 is a side sectional view of the bending device, and FIG. 7 is a bending device. A plan view of the device, FIG. 8 is a partially omitted perspective view showing the horizontal bending mechanism of the bending device, and FIG. 9 is an explanatory diagram showing the segments used to control each mechanism during molding bending. , FIG. 10 is a perspective view showing a cutting device installed and arranged in the same manufacturing equipment, FIG. 11 is a front view of the same cutting device, FIG. 12 is a side sectional view of the same cutting device, and FIGS. 13 and 14 are the same cutting device. FIG. 3 is an explanatory diagram of the operation of the device. X': Molding material, D=bending device, E:
Traveling cutting device, F: Detector.

Claims (4)

[Claims] (1) The entire length of a long molding material that has been bent into a predetermined cross-sectional shape is divided into arbitrary fixed lengths to obtain multiple imaginary segments, and the molding material is then folded along the axial direction. The amount of movement of each axial bending mechanism of the bending device that is inserted and supported is set for each imaginary segment, and each segment is detected by a detector as the molding material is continuously fed, and the In response, each axial bending mechanism of the bending device is individually controlled to move by a predetermined amount of movement, and the axial direction of the molding material is bent in a multidimensional direction with a desired continuous different curvature. The cutting device is caused to travel in synchronization with the delivery of the molding material, and the cutting device is driven after the molding material has traveled a predetermined distance based on the command from the detector to cut the continuous molding material into a predetermined length. A method for manufacturing moldings characterized by: (2) The method for manufacturing moldings as set forth in claim 1, wherein the multidimensional bending process is carried out horizontally and vertically, respectively, with respect to the axial direction of the molding material. (3) Manufacture of moldings according to claim 1, wherein the multi-dimensional bending process is performed in the horizontal direction, perpendicular direction, and torsional direction of the axial line of the molding material, respectively. Method. (4) The method for manufacturing moldings as set forth in claim 1, wherein each of the segments is detected by a rotary encoder.