JPH0425341A - Air feeder and its auxiliary fixing device - Google Patents

Abstract

PURPOSE:To prevent occurrence of deviation of position due to stop of work by providing an auxiliary hold plate which is energized by a compression coil spring having weaker resiliency than press-up force due to air pressure. CONSTITUTION:An air feeder releases a hoop plate 1 whose piston 10 presses up and holds an auxiliary hold plate 13 when work is started and air is supplied. When work ends and supply of air is stopped, the piston 10 of an auxiliary fixing base 9 is pressed by resiliency of a compression coil spring 12 and retracts in the inside. At the same time, the auxiliary hold plate 13 holds the hoop plate 1 between the auxiliary fixing base 9 and it so that the hoop plate 1 does not move. Thus, it is possible to prevent deviation of position while work is stopped.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an air feeder for a hoop machine used in a combined press/resin molding line, etc.

(Prior Art) A conventional air feeder will be explained with reference to FIGS. 4 and 5.

FIG. 4 is a side view of a conventional air feeder. The air feeder includes a fixed base 2 disposed on the lower surface of the hoop material 1 and a drive base 4 that reciprocates in the longitudinal direction by an air actuator 3.
Air actuator 5 placed above the above fixed table 2
The fixed side holding plate 6 is attached to the air actuator tough attached to the drive base 4, and the air actuator tough is attached to the drive base 4.
The drive side holding plate 8 reciprocates with the drive side.

Regarding the operation of the air feeder configured as above,
explain.

First, the air actuator 7 is operated, and the drive-side holding plate 8 is lowered to grip the hoop material 1 between it and the drive base 4.

Next, the air actuator 5 operates and the fixed side holding plate 6
is raised, and the hoop material 1, which had been held between it and the fixed base 2, is released.

Next, the air actuator 3 is operated to pull out the hoop material 1 to a predetermined length.

When the feeding operation of the hoop material l is finished, the air actuator 5
is activated, and the fixed side holding plate 6 is lowered to hold the hoop material 1 between it and the fixed base 2. At the same time, the air actuator 7 is activated and the driving side holding plate 8 is raised and separated from the hoop material 1.

In this state, the air actuator 3 is activated again to return the drive base 4 to its original position.

(Problem to be Solved by the Invention) However, in the above configuration, when the work is completed and the air supply is stopped, as shown in FIG.

Both retaining plates 6 and 8 rise and lose their grip, making the position of the hoop material unstable, and when work is restarted,
There was a problem in which the hoop material 1 was misaligned. The present invention solves the above problem and provides an air feeder that does not cause misalignment due to one work stoppage.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides an auxiliary holding plate biased by a compression coil spring with a repulsive force weaker than the push-up force due to air pressure.

(Function) With the above configuration, when air pressure is normally supplied, the compression coil spring is bent and the auxiliary holding plate does not work, and when the air pressure is cut off, the compression coil spring causes the auxiliary holding plate to Hold hoop material.

(Example) Two examples of the present invention will be explained with reference to FIGS. 1 to 3.

FIG. 1 is a front sectional view of an auxiliary fixing device according to the present invention, and the auxiliary fixing device is an auxiliary fixing device installed adjacent to the hoop material 1 supply side of the fixing base 2 (not shown) shown in FIG. It is slidably held by a stand 9, a piston 10 that is pushed upward by air pressure in a vertical cylinder formed on the auxiliary fixing table 9, and a guide column 11 fixed to the above-mentioned auxiliary fixing table 9 with a screw, A compression coil spring 12 designed to have a repulsive force that is weaker than the pushing up force to the piston 10 mentioned above.
and an auxiliary holding plate 13 urged downward by.

The operation of the air feeder provided with the auxiliary fixing device configured as above will be explained.

When the work is started and air is supplied, the piston 10 pushes up the auxiliary holding plate 13 and releases the hoop material 1 that was being held.

Meanwhile, the air actuator 5 shown in FIG. 4 starts operating, and the fixed side holding plate 6 instead of the auxiliary holding plate 13 holds the hoop material 1. The operation of the air feeder during work is as follows:
Since it is the same as the conventional example, its explanation will be omitted. When the first operation is completed and the air supply is stopped, the fixed side and drive side holding plates 6 and 8 are moved to the hoop material as shown in FIG. It separates from the surface of 1. On the other hand, the piston 10 of the auxiliary fixing base 9 is also pushed back inward by the repulsive force of the compression coil spring 12, and at the same time, the auxiliary holding plate 13 holds the hoop material 1 from moving between it and the auxiliary fixing base 9. . That is, by providing an auxiliary fixing device to a conventional air feeder, positional displacement during work stoppage can be prevented.

Next, regarding the second embodiment of the present invention, FIGS.
This will be explained using figures.

FIG. 2 is a side view of the air feeder according to the present invention. This embodiment is different from the first embodiment shown in FIG. This is the point. Others are the first embodiment and the fourth embodiment shown in FIG.
Since there is no difference from the conventional example shown in the figure, the same components are given the same reference numerals and their explanations will be omitted. Further, since the operation of the air feeder configured in this way is also the same as that in the first embodiment, a description thereof will be omitted. In addition, Figure 3 shows
The state at the end of the work is shown.

(Effects of the Invention) As explained above, according to the present invention, the position of the hoop material is maintained even when the work is stopped and the air supply is stopped. An air feeder is obtained.

[Brief explanation of the drawing]

FIG. 1 is a front sectional view of an auxiliary fixing device for an air feeder according to a first embodiment of the present invention, FIGS. 2 and 3 are side views of an air feeder according to a second embodiment of the present invention, and FIGS. The figure is a side view of a conventional air feeder. 1... Hoop material, 2... Fixed stand, 3゜5
．． 7... Air actuator, 4... Drive base, 6... Fixed side holding plate, 8... Drive side holding plate,
9... Auxiliary fixing base, IO... Piston, 11
... Guide column, 12 ... Compression coil spring, 13 ...
Auxiliary holding body. Patent applicant Matsushita Electric Industrial Co., Ltd.

Claims (2)

[Claims] (1) An air feeder that feeds hoop materials, etc. at a fixed pitch, consisting of a fixed base with a holding plate attached to an air actuator, and a driving base that slides on the air actuator and has a holding plate also attached with an air actuator. In,
An air feeder characterized by being provided with a holding plate which is evacuated by air pressure when air is being supplied, and which fixes the position of the hoop material etc. by a spring device when the air supply is cut off. (2) An auxiliary fixing base placed adjacent to the fixing base separates from the auxiliary fixing base when air is supplied, and connects with the auxiliary fixing base by a spring device when the air supply is cut off. An auxiliary fixing device for air feeders consisting of a holding plate that fixes hoop materials, etc. between them.