JPS6235532Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a feed bar coupling device in a transfer press.

In recent years, transfer presses have become more diverse and the frequency of mold replacement has increased, and moreover, rapid mold replacement is required to improve work efficiency.

Conventional transfer presses move the material to be pressed between dies using a single feed bar that runs through the transfer press.When changing dies, the feed bar is pulled out from the side of the press machine, and then The mold is transported to the outside of the press machine together with the bolster carrier.

However, since the feed bar is long, extracting it from the side of the press machine not only requires a large space, but also requires time and effort, resulting in poor work efficiency and a reduction in operating efficiency.

The present invention solves the problems of the conventional feed bar, moves the clamp segment by a pneumatically or hydraulically driven taper block within the feed bar, and connects the divided mutual feed bars so that they can be separated. The purpose of this device is to provide a feed bar coupling device that facilitates removal from a machine. Two feed bars that can be fitted into each other are provided with a cavity at their opposing ends, and the feed bar is inserted into the cavity. A required number of clamp segments are arranged that are fitted and fixed on the back side of the clamped part on the inner circumferential surface of the fitting part and have a dogleg-shaped sliding surface on the ventral surface, and the space surrounded by each clamp segment is Then, a taper block, which has a taper that can match the dogleg portion of the abdominal surface of the clamp segment and opens each clamp segment with one taper and closes each clamp segment with the other taper, is reciprocated in the axial direction of the feed bar. This invention relates to a feed bar coupling device in a transfer press, which is characterized in that it is slidably housed.

Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a diagram showing a divided portion of a feed bar 1 in a transfer press, where 2 is an upright side feed bar, 3 is a bolster carrier side feed bar, 4 is a divided portion, 5 is an upright, and 6 is a bolster carrier. Fig. 2 is a cross-sectional view of the feed bar 1, and Fig. 3 is a longitudinal cross-sectional view of the feed bar 1. The two are removably fitted in the feed direction at stepped portions 9 and 10. A clamp segment 12 6 is provided in the hollow portions 7 and 8 and has a dogleg-shaped cross section and a concave portion on the back surface of the clamp segment 12 that can be fitted and locked into the clamped portion of the inner peripheral surface of the fitting portion 11 of the two feed bars 2 and 3. A cylinder device 13 is provided in the feed bar 3 on the bolster side, and a piston rod 14 of the cylinder device 13 is provided.
A taper block 15 that can freely slide along the ventral surface of the clamp segment 12 within the space surrounded by the clamp segment 12 is attached to the tip of the clamp segment 12. When the taper block 15 is pushed or pulled, the clamp segment 12 It is configured to fit into or separate from the fitting portion 11.

When the upright side feed bar 2 and the bolster carrier side feed bar 3 are fitted together at their stepped portions 9 and 10, and the piston rod 14 of the cylinder device 13 is protruded, the taper block 15 attached to the tip of the piston rod 14 is inserted into the upright side. The side feed bar 2 and the bolster carrier slide in a space surrounded by a required number of clamp segments 12 arranged in the cavity 7 of the rear side feed bar 3, and the tapered portion A of the taper block 15 causes the clamp segments 12 to have a dogleg shape. The back concave portion bent according to the mold is pressed against the inner circumferential surface of the fitting portion 11 and is fitted into the fitting portion 11, so that the upright side feed bar 2 and the bolster carrier side feed bar 3 are connected so as not to be separated. Since the connection between the clamp segment 12 and the taper block 15 is strong, the transfer press operation can be carried out without any trouble.

When disconnecting the connected feed bar 1,
Pull back the piston rod 14 of the cylinder device 13, push the opposite side of the clamp segment 12 from the side that fits into the fitting part 11 with the taper part B of the taper block 15 attached to the tip of the piston rod 14, Release clamp segment 12 from. Once the clamp segment 12 is unlocked, the upright side feed bar 2
Alternatively, these two feed bars 2 and 3 can be easily separated by moving either of the feed bars 3 on the bolster carrier side in the separating direction. By attaching the feed bar 3 on the bolster carrier side to the bolster carrier, it becomes possible to carry it out of the press machine together with the bolster carrier.

When the work such as mold replacement is completed and the feed bar 1 is to be reconnected, the upright side feed bar 2 and the bolster carrier side feed bar 3 are made to face each other, and the above operation is repeated.

It should be noted that the feed bar coupling device in the transfer press of the present invention is not limited to the above-mentioned embodiments, but can also be applied to bars or shafts that require contact/separation work. Of course, various changes may be made without departing from the spirit of the invention.

As described above, according to the feed bar coupling device for the transfer press of the present invention, the clamp segment has a concave portion on the back surface and a dogleg-shaped sliding surface on the ventral surface, and a movable taper block that is tapered in two directions. Since the fitting part of the feed bar is locked, the connection of the feed bar is strong, and the clamp segment can be reliably fitted and removed by the taper block moved by the cylinder device, which speeds up the work of connecting and separating the feed bar. , it is possible to increase work efficiency and improve operation rate.

Particularly, since each clamp segment is clamped by expanding it by one taper of the taper block, and by moving in the opposite direction, each clamp segment is closed by the other taper, the clamp can be easily released.

Furthermore, since there is no need to attach each clamp segment with a pin and the structure is relatively simple, manufacturing costs are low and adjustment and maintenance labor are also reduced.

[Brief explanation of the drawing]

FIG. 1 is a view showing the divided portion of the feed bar in the transfer press, FIG. 2 is a view taken in the - direction arrow of FIG.
The figure is a view taken along the - direction arrow in FIG. In the figure, 2 is an upright side feed bar, 3 is a bolster carrier side feed bar, 7 and 8 are hollow parts, 11 is a fitting part, 12 is a clamp segment,
15 indicates a taper block.

Claims (1)

[Scope of utility model registration request] A cavity is provided at the opposing ends of two feed bars that can be fitted into each other, and the clamped part of the inner peripheral surface of the fitting part of the feed bar is fitted and fixed on the back surface of the clamped part in the cavity, and the vent surface thereof is fixed. A required number of clamp segments each having a doglegged sliding surface are arranged, and a space surrounded by each clamp segment has a taper that can match the doglegged part of the ventral surface of the clamp segment. 1. A feed bar coupling device for a transfer press, comprising a taper block that opens each clamp segment with a taper and closes each clamp segment with the other taper so as to be slidable back and forth in the axial direction of the feed bar.