JPH0256164B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is used to manufacture door sashes, moldings, etc., by converting workpieces made of elongated metal materials that have been bent into a predetermined cross-sectional shape into a multi-dimensional The present invention relates to an axial bending device suitable for bending a long workpiece in a direction.

Conventional technology Conventionally, in this type of axial bending device, a material bending guide roll element that forms a gap for material insertion using a plurality of rolls is attached to an outer frame using 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 material delivery positioning guide roll element to a bending guide roll element can be axially bent in multiple dimensions by being mounted so that it can move in the left and right directions. 58-43165).

Problem to be Solved by the Invention However, in this axial bending device, when the material passes through the bending guide roll element, the bending guide roll element is supported by a gyroscope-type universal joint mechanism, so it is difficult to start and stop the bending process. The timing cannot be controlled, and the axial shape of the workpiece cannot be accurately bent. Furthermore, if the workpiece is thin and has low rigidity, there is a risk that the workpiece may buckle due to the influence of the inertia of the universal joint mechanism.

Means for Solving the Problems In the axial bending device for a long workpiece according to the present invention, a horizontal bending device is installed on the base of a base that is swingable and rotatable in a direction that twists the axis of the workpiece. A stand-up member is provided that is swingable and rotatable in the direction, and a mouthpiece device through which a workpiece is inserted is provided in the upright plate portion of the stand-up member that is swingable and rotatable in the vertical direction about a horizontal axis. , a rising member, and a die device are attached to a drive mechanism that drives each independently or in phase in response to detection of the amount of workpiece supplied by a detection device. The drive mechanism for the base, upright member, and die device can be composed of a gear mechanism rotated by a drive motor, and the die device is equipped with an auxiliary shoe that projects forward in the feeding direction of the workpiece and interferes with the workpiece. be able to.

Function: In this axial bending device for long workpieces, all mechanical parts are attached to a drive mechanism and are forced to swing and rotate, bending the workpiece along its axis. This makes it possible to easily correspond to the axial direction and create accurate axial bending shapes.

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

This axial line bending device is used to manufacture door sashes, moldings, etc. for vehicles, after bending a metal strip material such as stainless steel into a predetermined cross-sectional shape, bending it in the continuous longitudinal direction, that is, the axial direction. It is applied to bending in two-dimensional or three-dimensional directions. The axis bending device is a first
As shown in the figure, there is a feeding device 1 for the workpiece X, which is composed of a group of pinch rolls that feed the workpiece X continuously or intermittently along the longitudinal direction, and a feeder 1 for the workpiece X that is in sliding contact with the workpiece X. A detection device 2 such as a rotary encoder that detects the supply amount of X, a support device 3 that holds the workpiece X so that it can be inserted therethrough, and the support device 3
and a bending device placed in front of the workpiece in the feeding direction. The support device 3 has a continuous insertion opening for the workpiece in the center, and it is preferable to provide a core that fits inside the workpiece inside the insertion opening near the exit. As shown in Figs. 2 and 3, the bending device includes a seesaw-shaped rocking rotation mechanism section 4 that twists and bends the axis of the workpiece X, and a horizontal mechanism that bends the axis of the workpiece X to the left or right. Directional swing rotation mechanism section 5
and a vertical swinging rotation mechanism section 6 that applies upward or downward bending to the axis of the workpiece X.

A seesaw-shaped rocking rotation mechanism unit that twists the axis of a workpiece is provided with a base 40 . The base 40 has a guide edge 41 in the shape of a semi-circular arc centered on the machining axis of the workpiece X on the lower side, and the machine body 7 is mounted on the guide edge 41 with a bearing, and guide rollers 71 and 72 are arranged in sliding contact therewith. It is installed by Further, the base 40 has a rail portion 42 formed in a convex manner, and the rail portion 42 is connected to the fuselage 7.
It is rotatably supported by the fuselage body 7 by fitting into the concave groove 73 of. A semi-circular recess 43 with gear teeth formed on the inner surface is provided on the side of the base 40 on a concentric circle with the guide edge 41, and a drive motor 44 fixed to the fuselage 7 is connected to the recess 43 in the recess 43. Gear 4 that rotates and is connected by a timing belt etc.
5 are arranged in mesh.

The lateral rocking rotation mechanism section 5 includes a rising member 50 that stands up against the fuselage 7 in the unprocessed state shown in FIG. part 52, upper horizontal plate part 5
3 and are integrally formed to have a substantially Z-shape when viewed from the axial direction of the workpiece X. This rising member 50 is rotatably supported by a vertical shaft 54 on the plate surface of the base 40 so as to be rotatable about the vertical shaft 54 . Further, gear teeth 55 are formed on the semicircular arc-shaped side of the lower horizontal plate portion 51.
A gear 57 is arranged to mesh with a drive motor 56 fixed to the base 40 and rotated by a timing belt or the like.

The vertical swinging rotation mechanism 6 includes a shoe having an opening through which the workpiece X can be inserted, as shown in FIG.
It is equipped with a cap device 60 consisting of a shoe holder. This cap device 60 has a horizontal axis 61 that stands up from the member 5.
It is supported by a bearing on an upright plate portion 52 of 0. A worm wheel 62 is attached to the tip end of the horizontal shaft 61, and the worm wheel 62 is connected to a drive motor 63 fixed to the upper horizontal plate portion 53 of the rising member 50 by a timing belt or the like, and rotates. The worms 64 are arranged in mesh with each other. Further, this nozzle device 60 is provided with an auxiliary shoe 65 that projects forward in the feeding direction of the workpiece X, and the auxiliary shoe 65 has a substantially L-shaped front end as shown in FIG. The tip ends 65a and 65b of the shoes are preferably set so as to extend to a position where they slightly interfere with the workpiece X when the workpiece X is in a straight line state.

It is preferable to use reversibly rotatable servo motors as the drive motors 44, 56, 63 of these rocking rotation mechanisms 4, 5, 6, and each motor is connected to the detection device 2 and the controller 8 via the controller 8, respectively. By this, the supply amount signal of the workpiece X detected by the detection device 2 is sent to the controller 8, and the base 40, the rising member 50, and the die device 60 are each made independent in response to the drive command signal from the controller 8, or They are configured to be driven in phase.

In the axial bending device for long workpieces configured as described above, when the detection device 2 detects the feed rate of the workpiece X and reaches a predetermined length, the controller 8 Drive commands corresponding to the bending shape are sent to the drive motors 44 of the swinging rotation mechanisms 4, 5, and 6.
Issued on 56 and 63. In response to the command, the drive motor 44 in the seesaw-shaped swinging rotation mechanism section 4 is operated to rotate the gear 45 via a timing belt or the like, and the recess 43 having gear teeth meshing with the gear 45 rotates. Therefore, the base 40 is swung by a desired angle in a direction that twists the axis of the workpiece X when viewed from the feed direction of the workpiece X, that is, to the right or left.
As a result of this rocking, the upright member 50 and the die device 60 are tilted to the right or left as a whole, so that the workpiece X linearly fed from the support device 3 can be subjected to torsional bending of its axis. Become. Furthermore, when the drive motor 56 operates in the horizontal swing rotation mechanism 5, the gear 57 rotates via a timing belt or the like, and the gear teeth 55 that mesh with the gear 57 rotate. The rising member 50 is rotated clockwise or counterclockwise at a desired angle.
As the nozzle device 60 also rotates as shown in FIG. 4, the axial direction of the workpiece Can be bent to the right or left. Furthermore, in the vertical swing rotation mechanism, when the drive motor 63 operates, the worm 64 rotates via a timing belt etc., and the worm wheel 62 meshing with the worm 64 rotates, so that the horizontal axis 6
The cap device 60 is tilted and rotated upward or downward at a desired angle about 1. With the rotation, the workpiece X passing through the opening of the mouthpiece device 60 can be axially bent upward or downward.

When these axial bends are performed in combination, a workpiece of a certain length can be bent in multiple dimensions as shown in FIG. Among these, when bending in the horizontal or vertical direction, the cap device 6
It is necessary to provide a slight gap between the workpiece X and the workpiece X inserted through it, but due to the influence of this gap at the time of starting bending, there is a slight gap between the bending drive command and the actual bending process. There is a slight time delay, which causes errors in each rotation angle and axis bending shape, but in response to this, the auxiliary shoe 65 protruding in front of the cap device 60 will correct the deviation even at the same rotation angle. Since it is located at a position with a large amount of force and interferes with the workpiece X, it acts to prevent errors from occurring. For the bending operation, the workpiece X can be bent into the desired axial shape by dividing the entire length of the workpiece X of a predetermined length into imaginary segments and operating each segment individually or in combination. .

Note that the shoe and the auxiliary shoe are not limited to those that make sliding contact, but may be rollers that rotate in contact with the workpiece. In addition, in this specification, the terms "horizontal", "horizontal direction", "vertical", and "vertical direction" are used based on the stationary state of the device as shown in FIGS. 2 and 3 for ease of understanding. It must be noted that this was written in the same way.

Effects of the Invention As described above, according to the axial bending device for a long workpiece according to the present invention, the swinging motion required for axial bending in each direction is made possible by forced rotational drive.
By being able to reliably accommodate the deviation of the workpiece, it becomes possible to perform accurate axial bending.

[Brief explanation of drawings]

FIG. 1 is a side view of an axial bending device according to the present invention;
FIG. 2 is a front view of the device, FIG. 3 is a plan view of the device, and FIGS. 4 and 5 are explanatory diagrams of the operation of the device. X: Long workpiece, 1: Feeding device, 2: Detection device, 3: Support device, 40: Base, 50: Standing member, 52: Upright plate portion, 54: Vertical axis, 60: Mouthpiece device, 65: Auxiliary shoe, 43, 45, 55, 5
7, 62, 64: Gear mechanism, 44, 56, 63:
drive motor.

Claims (1)

[Scope of Claims] 1. A feeding device that supplies a long workpiece, a detection device that detects the supply amount of the workpiece, a support device that holds the workpiece so that it can be inserted therethrough, and the support device. An axial bending device for a long workpiece, comprising a bending device disposed in front of the workpiece in the feeding direction of the workpiece,
A rising member capable of swinging and rotating in the horizontal direction about a vertical axis is provided on the base surface of the base that can swing and rotate in a direction that twists the axis of the workpiece, and a horizontal axis is attached to the upright plate portion of the rising member. A die device through which a workpiece is inserted is provided that can swing and rotate in the vertical direction around the center, and the base, the upright member, and the die device are connected to each other in response to the detection of the feed amount of the workpiece detected by the detection device. An axial bending device for a long workpiece, characterized in that it is attached to a drive mechanism that drives independently or in phase. 2. The axis bending device according to claim 1, wherein the drive mechanism for the base, the upright member, and the cap device is constituted by a gear mechanism rotated by a drive motor. 3. The axial bending device according to claim 1, wherein the die device includes an auxiliary shoe that projects forward in the feeding direction of the workpiece and interferes with the workpiece.