JPS6023896B2 - Mold changing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mold exchanging device for exchanging a feed bar together with a mold.

There are several methods for replacing the mold in a transfer press, but the present invention is the most effective method when replacing the feed bar along with the mold, especially when applied to presses where the mold can only be taken out in the forward direction of the press. The purpose is to provide a mold exchange device.

The present invention will be described with reference to the drawings of one embodiment. Reference numeral 1 denotes a transfer device, 2 a press, and 3 a clasp device that is interlocked with the clamp loading in the first transfer device.

4 is a feed bar to which a finger (not shown) for conveying the product is attached.

The feed bar performs clamping, feeding, unclamping, and returning movements like the rectangular shapes indicated by arrows a, b, c, and d in FIG.

5 is a transfer slider that gives forward and return motion to the feed bar.

Reference numeral 6 designates a feed bar coupling pin base which is provided on the slider and allows the feed bar 4 to freely slide in the direction in which it approaches or moves away.

A hole 4a provided at one end of the feed bar 4 engages with a pin 6a of this coupling pin stand 6, and receives a forward and return movement. The pin 6a and the feed bar 4 are vertically movable as shown in FIG. 3b. Reference numeral 7 denotes a clamp slider having a groove-shaped cross section, which engages the feed bar 4 freely in the groove direction, and also allows the clamp device 3 to move the feed bar 4 toward and away from the groove in the perpendicular direction. It is.

Reference numeral 8 denotes a safety device that releases the coupling pin base 6 of the feed bar when an excessive load is applied to the feed bar 4 in the longitudinal direction.

Reference numeral 9 denotes a foot rail for lifting the mold at the time of replacement, and a roller 10 is provided on the yielding foot rail 9.

A mold changing device 11 is movably mounted on the rails 12 and is moved on the rails 12 by a drive device (not shown).

The mold stand 14 is movable in the left and right directions on a rail 12 provided on the floor when viewed from the front of the press 2. This mold stand 14 is provided with a fork 17 that can be raised and lowered, a lifting device 22, a mold receiving portion 14a, and the like. The fork 17 has two surfaces 17a and 17b for receiving the molds 15 and 16, and these surfaces are located above and below.

Rollers 18, 19 are provided on each surface 17a, 17b to facilitate movement of the molds 15, 16. The lifting device 22 consists of a lifting cylinder 23 and telescopic cylinder mechanisms 24 and 25 shown in FIG. 4, and the fork 17 is raised and lowered by the action of these cylinders.

A roller 20 is provided on a mold receiving portion 14a directly provided on the mold stand 14. The press 2 is provided with a moving device 13 for pushing and pulling the mold 15.

The mold table 14 is also provided with a similar device (not shown) for pushing and pulling the mold 16. This moving device 13 consists of a cylinder, a piston that fits the cylinder, and a piston rod, and a recess is provided at the tip of the piston rod to engage with a T-shaped projection provided on the mold.

When the mold moves up and down with respect to the piston rod, the concavo-convex portion engages and disengages. Each mold 15, 16 is provided with a feed bar pedestal 21.

Next, exchanging the mold will be explained step by step. The upper mold 15a of the mold 15 is removed from the slide 27 and placed on the lower mold 15b via the spacer 28.

At this time, the feed bar 4 is held at a fixed position.
It is held by a pedestal 21. When the lower mold 15b is unfastened, the mold 15 is lifted by the lift rail 9,
The feed bar 4 is disengaged from the coupling pin 6a and the clamp slider 7.

(FIG. 3b) Next, the mold 15 is pushed out onto the surface 17a of the fork 17 by the moving device 13.

The fork 17 is lowered, and the upper surface 17b matches the upper surface of the lift rail 9 and the upper surface 14a of the mold stand 14. Mold stand 14
A moving device (not shown) moves the mold table 1 for the next process.
4, the mold 16 (with feedback) was moved onto the lowered fork upper surface 17b,
Then, it is drawn into the press 2 by the moving device 13 within the press.

When the lift rail 9 is lowered, the hole 4a of the feed bar enters the pin 6a, and the feed bar 4 enters the base of the clamp slider 7, respectively. When the lift rail 9 reaches its lower limit, the mold is tightened and the mold replacement work is completed.

After the mold exchange is completed, the metal exchange device 1 1 carrying the used mold from the previous process and the feed bar is moved forward along the rail 12.
The mold table 14 is moved in either the left or right direction, rightward in the illustrated example, and replaces the mold and feed bar to be used next.
Put it on top.

Then, the machine waits until the work is finished and the machine moves to the front of the press for mold replacement. According to the present invention, the mold table is equipped with a fork that can be raised and lowered in front of the press and can be moved left and right along the rail 12, and is used to hold molds for the next process. Replacement can be performed easily and quickly, and the man-hours required for mold replacement work can be reduced.

[Brief explanation of the drawing]

Fig. 1 is a side view of an embodiment showing a state in which the mold changing device according to the present invention has been moved to the front of the press and is in the process of exchanging the molds, Fig. 2 is a view taken along arrow A-A in Fig. 1, and Fig. 3 1 is a diagram for explaining the feed bar connection portion in FIG. 1, and FIG. 4 is a simplified diagram for explaining the fork lifting device according to the present invention. 1 is a transfer device, 2 is a press, 3 is a clamp device, 4 is a feed bar, 5 is a transfer slider, 6 is a coupling pin stand, 7 is a clamp slider, 8 is a safety device, 9 is a lift rail, 10 is a low-fu, 1 1 is a mold changing device, 12 is a seal, 13 is a moving device, 14 is a mold stand, 15 is a mold, 16 is a mold, 17 is a fork, 18
19 is a loaf, 20 is a loaf, 21 is a feed bar pedestal, 22 is a fork lifting device, 23 is a lifting cylinder, 24 is a telescopic link mechanism, 25 is a link, 26 is a connecting rod, 27 is a slide, 28 is Svesa. Figure 1 Figure 3 Figure N Sphere Figure 4

Claims (1)

[Claims] 1. A mold changing device used adjacent to the front of the bed of a press machine, which has mold receiving surfaces in two stages, upper and lower, and is driven up and down to the upper and lower positions, so that the receiving surfaces are respectively placed on the lift rail of the press. A mold changing device comprising: a fork having a height equal to that of the press; and a mold stand adjacent to the fork on the opposite side of the press and having an upper surface having the same height as the lift rail.