JPH04111929A - Frame rotating press apparatus - Google Patents

Abstract

PURPOSE:To improve working efficiency by pivoting press bodies arranged on a base freely rotatably through rotary bearings provided on supports arranged on both sides of the base and holding the posture of material to be worked with balance weights mounted for the press bodies. CONSTITUTION:One to plural sets of press bodies 100 are arranged linearly on the base 101 and pivoted freely rotatably through rotary bearings 114 mounted on the supports 103 arranged on both sides of this base. Further, balance weights 115 are provided so that the material to be worked balances the press bodies in weight. As the end part of a metal plate W to be worked is pressed and bent to a rectangular state, the press bodies are rotated and the material to be worked is kept so that a part opposite to a bent end part helds the posture before it is pressed. In this way, a problem on the safety operation that a part on the opposite side sprints UP is dissolved and the working efficiency can be improved drastically.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a sheet metal processing machine, and is particularly suitable for use in bending the ends of large metal plates.

(Prior Art) Conventionally, a press as shown in FIG. 5 has been used to bend the end of a long metal plate at right angles. FIG. 5 is a longitudinal sectional view of the main part of the press, in which the workpiece W is placed in the lower mold 7.
．． When the upper mold 9, which is placed on the middle mold 8 having a V-shaped recess and has a V-shaped protrusion at the tip, is operated downward by the hydraulic cylinder 13, the end of the workpiece W is connected to the upper mold 9. It is bent at right angles between it and the middle mold 8. 5 is a frame 6 is a sub-base, ] 0 is a support, ] 1 is a flange 12 is also a flange.

(Problems to be Solved by the Invention) In the above-mentioned conventional press, the lower die 7 is fixed as explained with reference to FIG. As a result, the opposite side jumps up as shown by arrow A in FIG. 5, which poses a serious problem in terms of safety.

(Means and effects for solving the problem) The present invention has been made to solve the above-mentioned problems, and the conventional press body has one set or a plurality of sets arranged linearly on a base. The edges of the plate-shaped workpiece are rotatably supported via rotary bearings provided on supports placed on both sides, and a balance weight is provided to maintain weight balance with the press body. As the press is pressed and bent at right angles, the press main body rotates, and the part of the workpiece on the opposite side of the bent end remains in the same position as it was before pressing. It is.

(Example) Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a top view of a frame rotary press device according to the present invention, showing an example in which four sets of 9-rotation presses 100 are provided.1 FIG. 2 is a view in the direction of the ■ arrow in FIG.
■Arrow view Figure 4 in the figure is IV-IV in Figure 2.
FIG.

The rotary press 100 is a device similar to the press device shown in FIG. 5 above, and the same reference numerals are given to parts that have the same function in both.

101 is a base that holds 4 sets of rotary presses 100, 103 is a support that serves as a support, and 04 is a balance weight that is composed of a plurality of plates that serves as a weight balance for the 4 sets of rotary presses 100. ] 15 is attached to the arm, ]] 4 is a pillow-type unit (rotation bearing) that rotatably holds the base 101.

Next, the effect will be explained. As the rotary press 100 operates the hydraulic cylinder 13 to bend the end of the workpiece W at right angles, the arrow B in FIGS.
The rotary press 100 rotates around the pillow-type unit 114 in the direction shown by , and the plate material W is held in the same position as before pressing. In other words, in contrast to the conventional press apparatus shown in FIG. 5, where the side of the plate material W opposite to the bent portion jumps up as the press action progresses,
In this embodiment, the rotary press 100 rotates approximately 172 times, which is the angle required to bend the sheet material W by 2, thereby preventing the sheet material W from jumping up.

(Effects of the Invention) Since the present invention is constructed as described in detail above, in the conventional sheet metal press, when the end of a plate-shaped workpiece is bent at a right angle, the opposite part is bent. However, with the frame rotary press device of this invention, such problems are completely eliminated, and the posture of the workpiece remains the same as it was before pressing. Therefore, it has the great effect of significantly improving work efficiency.

[Brief explanation of drawings]

Fig. 1 is a top view of the frame rotary press device according to the present invention, Fig. 2 is a view in the direction of the ■ arrow in Fig. 1, and Fig. 3 is a
The ■arrow view in the figure, Figure 4 is IV-N in Figure 2.
5 is a vertical cross-sectional view of a conventional sheet metal press. ]00...Rotary press, 101...Base. 104...Arm, 114...Rotation bearing. 115...Balance weight.

Claims (1)

[Claims] In a sheet metal press, one or more sets of press bodies are arranged linearly on a base, and are rotatably supported via rotary bearings provided on supports arranged on both sides of the base. A frame characterized in that the posture of the workpiece is maintained even if the end of the workpiece is pressed and bent at a right angle by providing a balance weight that maintains weight balance with the frame. Rotary press equipment.