JPH0140688B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an apparatus for bending door sashes, moldings, etc. (hereinafter simply referred to as "moldings") in multiple dimensions.

Conventional technology Conventionally, in this type of bending device, a material bending guide roll element that forms a gap for material insertion using multiple rolls is attached to an outer frame with a universal joint mechanism, and the outer frame is attached to a rotating plate. The ball screw mechanism is fixed and supported by a trochanter that is pivotally supported on the slide plate, and is attached to the slide support frame so that it can move up and down with a ball screw mechanism that drives the slide plate with a motor.The ball screw mechanism also drives the slide support frame to the machine frame with a motor. It is known that a linear material that is inserted from a guide roll element for positioning the material to a guide roll element for bending can be bent in multiple dimensions by being mounted so as to be movable in the left and right directions. Kimiaki
58-43165).

Problems to be Solved by the Invention However, with this bending device, not only is the installation itself large and the production cost high, but the slide support frame is equipped with a slide plate, a rotary plate mechanism, a universal joint mechanism, and a ball screw that moves the slide plate up and down. Since a mechanism and a motor are installed, the weight of the slide support frame as well as the slide plate is extremely large, and it is difficult to perform accurate control due to the effects of inertia during vertical, horizontal, and horizontal starting and stopping. In addition, when the material passes through the bending guide roll element, the bending guide roll element is supported by a gyroscope-type universal joint mechanism, which makes it impossible to form moldings accurately, which can lead to molding If the material is thin and does not have high rigidity, there is a risk that it will bend unnecessarily.
Furthermore, since the rotor meshes with the trochanter through spur gears, the counter-twisting 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 machine base that supports a support shaft protruding from the base plate through the plate surface so as to be swingable to the right or left;
This machine is equipped with a drive mechanism that rotates the spindle of the base plate to the right or left, and a drive mechanism that swings the upper and lower spindle rolls upward or downward.

Function: This molding type bending device bends the molding material horizontally and vertically using left and right or upper and lower support rolls, and the drive mechanism of each support roll is connected to the base plate equipped with each support roll. By providing these at independent positions, the influence of inertia is minimized and the molding material can be accurately bent in multiple dimensions.

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

In this embodiment, 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. In addition, this bending process is performed 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. 3, as shown in FIG. ,
It is fed into the holding devices B and C at a substantially constant speed to hold it slidably in the axial direction, and is inserted into the rear bending device D to be bent in multiple dimensions, and then cut by the traveling cutting device E. It is applied to manufacture moldings by cutting to a predetermined length.

Holding device B for molding material X′ with a screw,
As shown in Fig. 3, C is a holding device B in the form of an elongated box in which a slit b is made of a resin with excellent abrasion resistance and lubricity such as polyacetal, through which the molding material X' is inserted, and as shown in Fig. 4. As shown, a holding device C is incorporated in which a plurality of pairs of vertical rolls c ₁ and c ₂ are arranged in series to hold the molding material X' from at least the left and right sides. Among the holding devices, the latter holding device C has a rear bending device D.
In order to follow the axial bending of _the molding material X _' and make it possible to deviate slightly, as shown in Fig. It is better to fit and arrange the elastic material s of
Further, in addition to the left and right vertical rolls 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 left and right and center vertical rolls c ₁ , c ₂ , c ₃
has a square hole in the center as shown in FIG. 4, and is rotatably fixed by a shaft to a cylindrical holder _c4 which is vertically divisible. In addition, the cylinder holder _c4 is a block-shaped housing having a round hole with the same inner diameter as the cylinder.
The rotation of the cylindrical holder c ₄ can be adjusted by rotating a threaded rod c ₆ that is inserted into the cylindrical holder c ₅ and connects the side surface of the cylindrical holder c ₄ to the housing. Note that c ₇ is a bolt for fixing the cylindrical holder c ₄ after rotation adjustment.

The bending device D has a support shaft 1 on the plate surface of the machine stand 10.
It is attached so as to be swingable from side to side based on a base plate 12 which is pivoted at 1 (see Fig. 1 and 2a).
A rising plate 13 is integrally attached to the base plate 12 vertically and perpendicular to the feeding direction of the molding material, and approximately at the center of the plate surface of this rising plate 13 is shown in FIGS. 6, 7, and 8. Support rolls 14a and 14b are installed to support the molding material X' fed from the holding device C from at least the left and right sides and hold it in the horizontal direction. These left and right support rolls 14a and 14b include an intermediate support roll 14c that presses the left and right flange portions or the inner surface side according to the cross-sectional shape of the molding material X'.
It is recommended to add . Their support rolls 14a,
14b and 14c form a gap between each opposing surface through which a molding material X' having a predetermined cross-sectional shape is inserted, and these supporting rolls 14a, 14b,
It is attached so that the axial direction of the molding material X' held by the molding material 14c can be horizontally bent at least to the right or left. As shown in FIGS. 2b and 2c, the horizontal bending mechanism is constructed by attaching a gear 15 to the lower end of a support shaft 11 that is rotatably mounted on a plywood 12 and rotatably inserted into the machine base 10, and is engaged with the gear 15. The rotary drive mechanism 16 has a gear 16a on a rotating shaft 16b. The rotational drive mechanism 16 can be composed of a pulse motor, a hydraulic motor, etc.
It can be attached and placed in the lower position of 0.

In addition to this horizontal bending mechanism, the riser plate 13 is provided with a vertical bending mechanism.
Its vertical bending mechanism consists of left and right support rolls 14.
It consists of upper and lower support rolls 20a, 20b arranged behind the rollers a, 14b, 14c, and each of these support rolls 20a, 20b is loosely fitted onto each support shaft as shown in FIGS. A support bracket 22a that protrudes from the rising plate 13 supports shafts 23a and 23b which are supported by the bracket plates 21a and 21b of the rolls 20a and 21b, and which are attached to protrude from the sides of the bracket plates 21a and 21b at a position corresponding to the middle of each roll 20a and 20b. , 22b, and is supported so as to be able to swing up and down. The support shafts 23a, 23b are fixed to the bracket plates 21a, 21b with keys,
Further, it is rotatably supported by bearing brackets 22a and 22b. These support shafts 23a, 23
As shown in FIG. 1, a rotational drive mechanism 24 for swinging the bracket plates 21a and 21b is connected to one side 23b of the bracket 23b. The drive mechanism 24 can be a pulse motor, a hydraulic motor, or the like, and can be installed on the plate surface of the machine stand 10 on the side of the bending device D. This rotary drive mechanism 24 and the support shaft 23 of the bearing brackets 22a, 22b
a can be connected to each other by meshing the gear 26 of the spline shaft 25 and the motor gear via a universal joint. In the spline shaft 25, the base plate 12 is connected to the support shaft 11.
In place of this shaft, a flexible shaft 25' formed by twisting steel wire as shown in FIG. 9 is used.
You can also use When using this flexible shaft 25', flexible shafts are arranged on both sides of the drive mechanism 24, and one is connected to the support shaft 23 so that the torsion directions are opposite to each other.
It is desirable to connect one end to the support shaft 23b and the other end to the support shaft 23b.

In addition to these horizontal bending and vertical bending mechanisms, an axial twisting mechanism can be provided as shown in FIGS. 6, 7, and 8. The torsion mechanism is constructed by attaching the upper and lower support rolls 20a, 20b to the rotary plate 30 via the left and right support rolls 14a, 14b, 14c and the support brackets 22a, 22b, and fitting the rotary plate 30 to the rising plate 13. The rotating plate 30 is rotated by a worm gear 31 provided on a rising plate and a worm wheel 32 provided on the rotating plate 30. As shown in FIG. 1, this worm gear 31 can be rotated by a drive mechanism 33 including a pulse motor, a hydraulic motor, etc., similar to the horizontal bending and vertical bending mechanisms. The drive mechanism 33 can be installed on the plate surface of the machine base 10 similarly to the vertical bending mechanism,
It can be connected to the support shaft 31a of the worm gear 31 by a spline shaft or a flexible shaft 34 via a universal joint.
Note that when using a flexible shaft, it is desirable to configure it in the same manner as in the case of the vertical bending mechanism described above. In addition, since this axial twisting mechanism forcibly twists the axis of the molding material X',
The left and right support rolls 14a, 14b, 14c are the fifth
Like the vertical rolls c ₁ , c ₂ , c ₃ of the holding device C shown in the figure, a rubber elastic body is fitted and arranged at the axial center, and the upper and lower support rolls 20a, 20b are arranged as shown in FIG. By forming the shaft hole to expand from the center to the left and right, it is also possible to support the shaft in a freely deflectable manner.

In the bending device configured in this way, the spindle 1
A horizontal bending mechanism, a vertical bending mechanism, and an axial torsion mechanism that operate as necessary are mounted on a base plate 12 that swings about 1 as a fulcrum. When horizontally bending the molding material
By changing the direction of the gap between 4b and 14c by swinging around the support shaft 11 of the base plate 12, the holding device C
The molding material X' inserted through the hole can be curved to the left or right. In addition, for vertical bending, upper and lower support rolls 20a, 20
b is the support shaft 2 of the bracket plates 21a, 21b.
The molding material X' can also be curved in the vertical direction by changing its attitude upward or downward from the horizontal position by swinging around 3a and 23b. All of these bending processes are performed using the support shaft 11,
Because it is performed by swinging around 23a and 23b,
The posture can be changed smoothly and the molding material X' can be accurately bent in the axial direction. The bending rate can be continuously adjusted to a desired angle by appropriately adjusting the rotation speed of the drive mechanisms 16, 24, and the left and right support rolls 14a, 14
b, 14c and upper and lower support rolls 20a, 20b
By changing the direction of each gap over time with respect to the molding material X' passing through each gap, the axial direction of the molding material X' can be bent continuously or simultaneously to the right or left, upward or downward. Can be done. In addition to these two-dimensional bends,
When bending is performed to twist the axial direction as necessary, the worm gear 31 may be rotated to rotate the rotary plate 30 at a desired angle via the worm wheel 32. When the rotating plate 30 rotates, the rotating plate 3
Left and right support rolls 14a, 14 integrally attached to
b, 14c and upper and lower support rolls 20a, 20b
Since the molding material X' is inserted through the molding material X' and its position is changed diagonally from the horizontal or vertical position, the axis of the molding material X' can be twisted between the holding device C and bent in three-dimensional directions.

For the bending process, the entire length of the molding is divided into imaginary segments of arbitrary fixed length, and each segment has a horizontal bending mechanism, a vertical bending mechanism, and even a vertical bending mechanism according to a predetermined program. This can be done automatically by actuating the axial twisting mechanism accordingly. Each segment 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, as shown in FIGS. Each mechanism 1
By individually transmitting data to 6, 24, and 33 via the controller G, each mechanism can be controlled at a rotation speed corresponding to the segment.

Effects of the Invention As described above, according to the bending device for moldings according to the present invention, each axis bending is performed by swinging or rotating each mechanical part, and the drive mechanism is swinging or rotating. Since the bending device is installed separately from the other parts, the weight of the bending device is reduced, and the desired bending process can be performed without being affected by inertia.In addition, each mechanism installed on the stand-up plate can be swung or rotated. By simply configuring the device in this manner, the entire device can be manufactured to be small and inexpensive.

[Brief explanation of drawings]

FIG. 1 is a plan view showing the entire molding manufacturing apparatus incorporating the bending apparatus according to the present invention, FIG. 2a is a partially enlarged side view of the same apparatus, and FIG.
Figures b and c are explanatory diagrams showing the vibration mechanism of the base plate installed in the same equipment, Figure 3 is a partially cutaway perspective view of the holding device installed and placed in the same manufacturing equipment, and Figure 4 is installed and placed in the same manufacturing equipment. 5 is a perspective view of a support roll attached to the holding device, FIG. 6 is a front view of the same bending device, FIG. 7 is a plan view of the same device, and FIG. The figure is a side view of the device, and FIG. 9 is an explanatory diagram of a flexible shaft that can be attached to the drive source of the vertical bending mechanism and torsional bending mechanism.
10 to 12 are explanatory diagrams of the operation of each mechanical section. 10: Machine base, 11: Support shaft, 12: Base plate, 13:
Standing plate, 14a, 14b, 14c: left and right support rolls, 16: drive mechanism for left and right support rolls,
20a, 20b: Upper and lower support rolls, 24: Drive mechanism for the upper and lower support rolls, 30: Rotating plate.

Claims (1)

[Scope of Claims] 1. Left and right support rolls that insert and support the molding material from at least left and right sides, and vertical support rolls that can swing upward or downward that insert and support the molding material vertically 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 the rising plate upright, a machine base that supports the support shaft protruding from the base plate so that it can swing to the right or left by inserting it through the plate surface, and a base plate that is equipped on this machine base. 1. A bending device for moldings, comprising a drive mechanism that rotates a spindle of the roller to the right or left, and a drive mechanism that swings a roll of the upper and lower spindles upward or downward. 2. The bending device according to claim 1, wherein each of the support rolls is mounted on a rising plate via a rotary plate that can be rotated clockwise or counterclockwise.