JPS60261624A - Material supporting device of press brake - Google Patents

Abstract

PURPOSE:To elevate a bend accuracy by providing a position setting sensor detecting a supporting member and plate material being on a level position and by following to the bending motion of the plate material with rotating the supporting member. CONSTITUTION:A position setting sensor 10 is constituted by a detecting head 11 supported with a spring and descending by a load and a switch turning on when a plate material 3 is positioned horizontally for the upper surface of a lower die 12. First a motor 7 is run after the plate material 3 being placed on a supporting member 1 and the plate material 3 pushes down the detecting head 11 and the motor 7 is stopped when the switch of the sensor 10 is turned on. Rotation is started centering around a rotation center 4 when the plate material 3 is bent by a upper die 16. The rotation starting thereof is detected by the switching-off of the sensor 10 and the motor 7 is driven by a controlling means. The supporting member 1 is followed to the revolution of the plate material 3 via a rotation linking mechanism 2 with said method. Consequently the bend work of the plate material 3 having higher accuracy is possible.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a material support device for a Luth brake in which a support member follows cartwheeling caused by bending a plate material.

[Prior art]

With conventional press brake material support devices, when performing bending, the plate is placed on a support table that is set parallel to the plate, and the support table always follows from a horizontal position. If the other end of the board is bent completely, when the board is placed on a support table, the temporary part will bend due to its own weight V and be positioned on the lower die.
7- A horizontal VC can be placed on the lower mold, and even while the bending is being followed, the board bends and bends, so it is not possible to accurately follow and support the board, and the bending is Sayado also had some flaws. Also, chodeni-￥l+li
When bending a board with a bent edge or a short board with a small deflection, place it on the board at the board meeting table.
f'f, the plate material is at a certain angle with respect to the upper surface of the lower die of the press brake, a gap is created between the plate material and the lower die, and when the bending is completed, there are disadvantages such as plastic deformation occurring during processing other than machining tfB. was there.

[Summary of the invention]

This g#! A is a device designed to eliminate the above-mentioned drawbacks of the conventional method.It is equipped with a sensor for setting the horizontal position of the plate, and the plate is always bent from a position horizontal to the upper surface of the lower mold, and the supporting part is used to bend the plate. Press brake material support device that follows the behavior? There is something that the purpose is to provide.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings.

2 in the figure, (1) is the support member, and (2) is the support member (1).
) is supported so as to rotate with the rotation center (4) of the plate material (8) as the entire center, (5) is the shaft that drives the link rotation mechanism, and (6) is the shaft facing the shaft (5). The gear (7) is a motor that controls the rotation of the support member (1), and the gear (8) is attached to the shaft of the motor (γ). The toothed belt (9) is hooked and the L1 axis (5) is fully driven.The position setting sensor detects that the toothed belt (9) is supported by a spring and descends to the load. Head and plate material (8
) is the lower mold of the press brake (a switch that is turned on in a horizontal position to the top surface of the field, such as a hunting proximity switch (13)
It consists of

The frame μs which holds the link rotation mechanism (2), the motor (γ), etc.] is the bearing that fully supports the shaft (5), and (16) is the upper die of the press brake.

:( In the material support device of the press brake configured as described above, first, the position setting sensor (10)' is placed on the position setting sensor (10)' when the plate material (8) is placed in the position horizontal to the lower die (the proximity switch (
1B) is turned on, and after placing the support member (1) K in the horizontal position on the board (8), turn on the motor (
7) After full rotation, the plate material (8) contacts the detection head 01) of the position setting sensor (10) and presses down 71-'Th.
The proximity switch (13) is turned on and the rotation of the motor (7) is completely stopped. This completes the horizontal positioning of the plate (8). Then press brake ram? When lowered,
The upper mold (t61) [J: The plate material (8) begins to rotate around the entire center of the bend n1 rotation center (4).The start of this rotation is detected by turning off the proximity switch (18), and the control means (17
) drives the motor (7), the shaft (5) rotates via the gear (8), toothed bell) (9L gear (6), and the link rotation mechanism (2) 'kM ) The entire board is rotated concentrically with the rotation of the board (8), and follows the movement of the board (3).

In the above embodiment, the position setting unit (1111) that moves up and down to position the plate (8) is provided, but all tracking sensors equipped with a rotation mechanism and an encoder are used to position the plate (8).
Following the process of 3), the entire rotational position of the plate material (8) may be measured and used for positioning.

〔Effect of the invention〕

As explained above, this invention is equipped with a position setting sensor that detects that the plate is in a horizontal position with respect to the upper surface of the lower mold, bends the plate from a position horizontal to the upper surface of the lower mold, and moves the support member to the position of the plate. Since it follows the bending behavior, it is possible to horizontally position plates of various shapes, such as plates that have already been bent at one end, and the supporting member can accurately follow the plate, allowing for high-precision bending. This has the effect of making it possible.

[Brief explanation of the drawing]

The drawings show an embodiment of the material support device for a press brake according to the present invention, and FIG. 1 is a front view, FIG. 2 is a plan view, and FIG.
FIG. 3 is a side view, and FIG. 4 is a control circuit diagram. (1): Supporting member (2): ') Link rotation isopuction (8
): Plate material (4) Center of two rotations (7): Motor Oka: Position setting sensor o1): Detection head (auxiliary nibless brake lower mold 08)
: Proximity switch 06) Nibbles brake upper type (17)
:Control means 5- Note that the same or equivalent parts in the figures are indicated by the same reference numerals. Agent Masuo Oiwa 6-

Claims (1)

[Claims] A supporting member on which all the plate materials are placed and a position setting tool that detects that the plate material is at a position vc horizontal to the upper surface of the lower die of the press brake, are provided to bend and support the plate material from a position horizontal to the upper surface of the lower die. The song of the plate material is 1jlJ by driving the member full rotation.
A material support device for a hoopless brake, characterized in that it follows K.