JPS60238037A - Molding machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention provides a forming machine in which forming rolls can operate quickly (i.e., improving forming ability and preventing defects in plates). It is related to.

[Conventional technology]

Conventionally, a forming machine has been used to form a metal plate into a tubular shape. However, with conventional forming machines, 1) the forming rolls are allowed to escape during sheet threading, and then the forming rolls are slowly set in place by an electric motor after the sheet threading, resulting in large time losses and poor work efficiency; ) There were problems such as increasing the forming capacity, which could cause scratches on the board and reduce product quality.

[Problem that the invention seeks to solve]

The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a forming machine in which a forming roll can be operated quickly, and which can simultaneously improve forming capacity and prevent defects on plates due to forming. It is something.

[Means for solving problems]

The basic structure of the present invention is that a forming roll disposed inside the material to be formed is supported by liquid pressing means, and in addition, a detector for detecting the position of the forming roll and a detector for detecting forming reaction force are provided. It is equipped with a detector and a device that determines the position of the forming roll based on the set forming roll position command (the detected forming roll position and forming reaction force).

[For production]

In the present invention, the material is formed into a predetermined radius of curvature using forming rolls.

〔Example〕

Embodiments of the present invention will be described below with reference to the accompanying drawings.

A vertical fluid pressure cylinder (2) is attached to a required frame (1), and a piston rod (3) of the fluid pressure cylinder (2) is attached.
) A plurality of sets of fluid pressure pistons (4) capable of moving forward and backward in diagonal directions are provided at the lower end, inner rolls (5) for molding are attached to the fluid pressure pistons (4), and the fluid pressure pistons (4) A detector (6) for detecting the position of is attached to the hydraulic piston (4), and a servo valve (8) and a pressure detector ( 9) so that the signals detected by the position detector (6) and pressure detector (9) can be sent to the arithmetic and control device (10), and the setting device (+,
1) The position of the inner roll (5) can be set from f2, and a command signal can be output from the arithmetic and control device (10) to the servo valve (8).

In the figure, (12) is an outer roll, 03) is a bottom roll, and α (a) is a molding material.

During molding, the piston rod (3) is lowered to a predetermined position by the fluid pressure cylinder (2), and the setting device (11
) sets the position of the inner roll (5) in the arithmetic and control unit 00). Therefore, a command signal is output from the arithmetic and control unit (10) to the servo valve (8), and the servo valve (8)
opens in response to a command signal, and the pressure liquid acts on the fluid pressure piston (4) from the pipe (the pipe), and the fluid pressure piston (4) (from the second, the inner roll (5) moves toward the material α (1) side. do.

The amount of movement of the fluid pressure piston (4) is detected by the position detector (6) and fed back to the arithmetic and control unit α0), and when the set position is reached, the servo valve (8) closes and the inner roll (5) Positioned. Then, the inner roll (5) pushes the inside of the radius of curvature of the material (14),
Molding is performed, and during molding, the molding reaction force acting on the inner roll (5) is detected as pressure by the pressure detector (9), and its signal is sent to the arithmetic and control unit 00.

If the pressure detected by the pressure detector (9) is excessive,
A command signal is output from the arithmetic and control device (10) to the servo valve (8), the servo valve (8) opens, pressure oil is supplied to the head side, and the forming reaction force acting on the inner roll (5) reaches a predetermined level. The hydraulic piston (4) is retracted to reach the value.

In the embodiments of the present invention, a case has been described in which a fluid pressure piston with an inner roll attached is controlled by a control system, but it is also possible to control a vertical fluid pressure cylinder. It goes without saying that the pressure cylinder can also be implemented as an electric motor, and that various other changes can be made without departing from the gist of the present invention.

(5) [Effects of the Invention] According to the forming machine of the present invention, it is possible to quickly move the inner roll for forming, so quick operations can be performed when punching or threading. This improves work efficiency,
In addition, the molding ability can be improved, and when an excessive molding reaction force occurs, the inner roll can be released, which prevents scratches on the board and improves product quality. It can be effective.

[Brief explanation of the drawing]

The figure is an explanatory view of one embodiment of the molding machine of the present invention. In the figure, (2) is a hydraulic cylinder, (4) is a hydraulic piston, (5) is an inner roll, (6) is a position detector, (
8) is a servo valve, and (9) is a pressure detection S-, QO) is an arithmetic control device.

Claims (1)

[Scope of Claims] 1) A molding machine characterized in that a molding roll disposed inside the radius of curvature of the material to be molded is supported by fluid suppressing means. 2) The forming roll disposed inside the radius of curvature of the material to be formed is supported by the fluid suppression means, and a detector for detecting the position of the forming roll and a detector for detecting the forming reaction force are set. 1. A molding machine comprising a device for determining the position of a molding roll based on a molding roll position and a molding reaction force detected in response to a molding roll position command.