JPS6138794Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a press apparatus such as a c-frame gap press having a balance cylinder.

In a conventional press device of this type, as shown in Fig. 1, a balance cylinder b is mounted on the upper part of a frame a.
This increased the overall height of the press, which was undesirable in terms of appearance. Also, Figures 2 and 3
As shown in the figure, there was a frame with a built-in balance cylinder b in the upper part of the frame a, but this could not be lifted at the center S of the slide-driven connecting rod, and the acting force of the balance cylinder 10 was offset by a distance e from the axis s. This always resulted in an eccentric load, and if the upper frame was to have an oil bath structure, the balance cylinder mounting structure would be complicated. In the conventional configuration, the center of the plunger guide and the center of balance cylinder b were eccentric, so the slide was held in an inclined shape by the balancer, causing uneven contact with the slide gib, resulting in significant wear of the gib. Even when adjusting the slide gib, there was a problem in that the gib had to be adjusted after holding the slide in its normal state.

The present invention was developed in view of the above circumstances, and its purpose is to reduce the overall height of the press, simplify the structure of the upper frame,
Another object of the present invention is to provide a press device in which the center of the cooking rod is lifted up so that the slide does not tilt and the slide gib can be easily adjusted.

Hereinafter, the present invention will be explained with reference to FIG. 4 and subsequent figures. In the drawing, 1 is a frame and 2 is a slide. Balance cylinders 3 are arranged on both sides of the slide 2, and these balance cylinders 3
The upper end is attached to the frame 1 with a shaft pin 5, and the rod 4 of the balance cylinder 3 is attached to the slide 2.
It is attached to brackets 6 protruding from both sides of the frame with shaft pins 7. The balance cylinders 3 are located on both sides of the plunger guide 8 and within a plane that includes the axis of the plunger guide 8.

Therefore, as shown in FIG.
When the balance cylinder 10 is not in the plane s including the axis of the connecting rod 9 and the axis of the balance cylinder 10 is eccentric by a distance e from the axis of the connecting rod 9, the acting force of the balance cylinder 10 that occurs will not become an eccentric load. .

As described above, the present invention has balance cylinders 3 attached to a C-shaped frame gap press, in which the balance cylinders 3 are arranged on both sides of the slide 2, and these balance cylinders 3 are aligned with the axis of the plunger guide 8. This is a press device characterized in that it is located within a plane containing.

Therefore, since the balance cylinder 3 is installed in a plane that includes the axis of the plunger guide 8, the slide 2 always maintains accurate parallelism to the bed, and the balance of the slide 2 is maintained even when the slide 2 is driven. Since it sag, there is no uneven contact with the slide gib, so there is less wear on the gib, and the frequency of gib adjustment is low, and the gib spacing can be adjusted symmetrically. Moreover, since it is a C-frame gap press, the balance cylinder 3 does not interfere with the loading and unloading of press-formed products.

Moreover, the overall height of the press can be reduced, the structure of the upper frame can be simplified, and since the center of the connecting rod is lifted, the slide does not tilt, making it easy to adjust the slide gib.

[Brief explanation of the drawing]

Figures 1 and 2 are respectively schematic front views of conventional press equipment, Figure 3 is an explanatory diagram of the arrangement of the balance cylinder and connecting rod, Figure 4 is a front view of an embodiment of the present invention, and Figure 5. is the same side view. 2 is the slide, 3 is the balance cylinder, and 8 is the plunger guide.

Claims (1)

[Scope of utility model registration request] In a C-frame gap press equipped with balance cylinders 3, the balance cylinders 3 are arranged on both sides of the slide, and these balance cylinders 3 are located within a plane containing the axis of the plunger guide 8. Characteristic press equipment.