JP2602182Y2 - Panel bender - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a panel bender, and more particularly, to a panel bender having an improved bending angle positioning device.

[0002]

2. Description of the Related Art Conventionally, as a panel bender, a positioning cylinder is provided on a frame, and a bending cylinder is provided below the positioning cylinder. The bending cylinder is provided with a bend beam via a link mechanism.

[0003] With the above arrangement, after the bending angle of the bend beam is adjusted by the operation of the positioning cylinder, the bend beam is moved up and down by the operation of the bending cylinder, and the panel is bent. The positioning cylinder detects a position by an encoder and is operated by a proportional valve.

[0004]

In the above-mentioned conventional panel bender, when the bending cylinder is operated, a large force is applied to the bend beam and the positioning cylinder. When a large force is applied to this positioning cylinder,
Leakage may occur in the positioning cylinder, resulting in poor positioning accuracy. Further, when the oil temperature changes, the piston rod of the positioning cylinder expands and contracts, so that there is a problem that the bending accuracy varies.

It is an object of the present invention to provide a panel bender which improves the positioning accuracy of a bending angle in order to improve the above problem.

[0006]

In order to achieve the above object, the present invention provides a bottom die, a top die capable of pressing and fixing a panel on the bottom die, and a folding of a panel fixed by the bottom die and the top die. In a panel bender comprising a vertically movable bend beam for performing bending, a bending cylinder is provided on a bend beam positioning block which can be vertically positioned by a ball screw, and a piston rod mounted on the bending cylinder is connected to a piston rod via a link mechanism. The bending beam is connected to the bending cylinder and a heat insulating member is provided between the bending beam positioning block and the bending cylinder.

[0007]

With the above arrangement, the bend beam positioning block is moved up and down by the ball screw to determine the bending angle. Next, by operating the bending cylinder, the bend beam is moved up and down via the link mechanism, and the panel is bent.

By using a bend beam positioning block that can be freely positioned up and down by a ball screw, the accuracy of the bending angle is improved as compared with the conventional case. Further, by providing the heat insulating member between the bend beam positioning block and the bending cylinder, the heat generated from the bending cylinder is shut off, and the bend beam positioning block is prevented from expanding and contracting due to the heat.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings.

Referring to FIGS. 1 and 2, a panel bender 1 is vertically moved by a bottom die 5 provided on an upright frame 3 and a cylinder (not shown) for pressing and fixing a panel W on the bottom die 5. Movable top die 7
Is provided. Therefore, the panel W to be bent is placed on the bottom die 5 and the top die 7 is lowered to press the panel W, so that the panel W is fixed by the bottom die 5 and the top die 7.

Due to the vertical movement of the bend beam 9 provided on the front side of the bottom die 5 and the top die 7, the projecting portion of the panel W fixed by the bottom die 5 and the top die 7 is bent. .

A fixing member 1 made of a rectangular plate or the like
Fixing plates 13A and 13B are fixed to the front of 1 and a ball screw 15 extending vertically is rotatably supported on the fixing plates 13A and 13B.
In addition, a driven pulley 17 is mounted between the fixed plates 13A and 13B.

The fixed member 11 is provided with a servomotor 19, and an output shaft 21 of the servomotor 19 is mounted on a driving pulley 23. This drive pulley 23
A belt 25 is wound around the driven pulley 17.

A nut member 27 is screwed into the ball screw 15, and the nut member 27 is mounted on an upper part of a bend beam positioning block 29. The bend beam positioning block 29 is moved up and down by being guided by a plurality of guide rails 31 provided in the front side of the fixing member 11 and extending in the vertical direction.

A bending cylinder 35 is mounted below the bend beam positioning block 29 via a heat insulating material 33 such as glass wool. The bend beam 9 is connected to the tip of a piston rod 37 mounted on the bending cylinder 35 via a link mechanism 39. That is, as the link mechanism 39, one end of the arm member 41 is attached to the tip of the piston rod 37 by the attachment shaft 43, and the other end of the arm member 41 is attached to the bend beam 9 by the attachment shaft 45. It is attached to the lower end of a rod 47 extending vertically. In addition, a shaft 49 extending in a direction perpendicular to the plane of FIG. 1 is attached to a substantially central portion of the arm member 41.

With the above configuration, when the servo motor 19 is driven, the output shaft 21, the driving pulley 23, the belt 25
And the ball screw 15 is rotated via the driven pulley 17. The rotation of the ball screw 15 causes the bend beam positioning block 29 to move up and down. The bending cylinder 3 is moved up and down by the bend beam positioning block 29.
5. The bend beam 9 is positioned vertically via the link mechanism 39. When the positioning is performed, the servomotor 19 is servo-locked to prevent the positioning from being shifted.

After the bend beam 9 is positioned by the bend beam positioning block 29, the piston rod 37 is moved up and down by operating the bending cylinder 35. The vertical movement of the piston rod 37 causes the arm member 41 to rotate up and down about the shaft 49, whereby the bend beam 9 is moved up and down via the rod 47.

The vertical movement of the bend beam 9 causes the panel W pressed and fixed between the bottom die 5 and the top die 7.
The normal or reverse bending is performed at a desired angle on the projecting portion.

As described above, the bend beam positioning block 29 is positioned by driving the servo motor 19 and rotating the ball screw 15, so that the bend beam 9 is accurately positioned. Therefore, it is possible to improve the positioning accuracy of the bending angle. That is, by changing from the conventional hydraulic cylinder for positioning to a ball screw, it is possible to prevent leakage from the positioning cylinder during bending cylinder operation and expansion and contraction of the cylinder due to a change in oil temperature.

The bend beam positioning block 29
The heat insulating material 33 is interposed between the bending screw 35 and the bending cylinder 35, so that heat transmission is interrupted, and the positioning mechanism for moving the bend beam positioning block 29 up and down by the ball screw 15 is prevented from expanding and contracting due to heat. Can be.

The present invention is not limited to the embodiment described above, but can be implemented in other modes by making appropriate changes.

[0022]

As will be understood from the above description of the embodiments, according to the present invention, since the configuration is as described in the claims of the utility model registration, the positioning accuracy of the bending angle can be improved. Improvement can be achieved. In addition, since the heat insulating material is interposed between the bend beam positioning block and the bending cylinder, the transmission of heat can be interrupted, and the positioning mechanism such as the bend beam positioning block can be prevented from expanding and contracting due to heat.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of the panel bender of the present invention.

FIG. 2 is a perspective view of a positioning mechanism for positioning a bending angle.

[Explanation of symbols]

 1 Panel Bender 5 Bottom Die 7 Top Die 9 Bend Beam 15 Ball Screw 19 Servomotor 29 Bend Beam Positioning Block 33 Insulation Material 35 Bending Cylinder 37 Piston Rod 39 Link Mechanism

Claims (1)

(57) [Scope of request for utility model registration] A panel comprising: a bottom die; a top die capable of pressing and fixing a panel on the bottom die; and a vertically movable bend beam for bending a panel fixed by the bottom die and the top die. In a bender, a bending cylinder is provided on a bend beam positioning block that can be vertically positioned by a ball screw, and the bend beam is connected to a piston rod mounted on the bending cylinder via a link mechanism, and the bend beam positioning block is provided. A panel bender, wherein a heat insulating member is provided between the panel bender and the bending cylinder.