JPH0715618Y2 - Finger unit of transfer feeder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a finger device for a transfer feeder provided in a transfer press.

[Conventional technology]

Conventionally, a transfer press having a plurality of processing stations is provided with a transfer feeder that sequentially conveys a work to each processing station.

The transfer feeder has a pair of feed bars provided along the work transfer direction, and fingers for clamping the work are provided on these feed bars.

The fingers include a fixed type finger and a movable type finger in which a finger body a as shown in FIG. 4 is urged by a compression spring b, and the fixed type fingers are attached to the feed bars at positions facing each other. There is a fixed type finger on one side of the feed bar and a movable type finger on the other side, or a movable type finger is attached to each feed bar.

[Problems to be solved by the invention]

However, in the case where fixed type fingers are attached to each feed bar, if the dimensions of the work do not match between the fingers, the feed bar may bend when the work is clamped, or the work may not be clamped. There was a problem that adjustment required a lot of man-hours.

Further, in the case where the fixed type finger is provided on one side of the feed bar and the movable type finger is provided on the other side, when the work is unclamped, the compression spring b provided on the movable type finger is used.
The work is pushed by the restoring force of, and the center of the work is deviated from the center of the mold, which is a problem.

Further, in the case where each feed bar is provided with a movable finger, a gap d for preventing the feed bar from being bent is provided in each finger between the finger main body a and a supporting member c supporting the same, so that the work is If there is variation in the spring force of the compression spring b when clamped, the center of the clamped work deviates from the center of the mold, and the work cannot be carried into the center of the mold.

[Means and Actions for Solving Problems]

This invention has been made for the purpose of improving the above-mentioned problems, and in a transfer feeder provided with fingers for clamping a work to be conveyed at positions facing each other of a pair of feed bars provided along the work conveying direction, A fixed finger is provided on one of the feed bars, and a movable finger whose finger body is urged toward the fixed finger by a compression spring is provided on the other feed bar, and a tip of the fixed finger is provided. Is urged by a compression spring so as to project from the tip of the fixed type finger, and when the clamping of the work between the fingers is completed, the inner finger that is pushed by the work and sinks into the fixed type finger is provided. , When the work is clamped between the fingers, the inner fingers will sink and the tip of the fixed finger will For abutting the workpiece, it is possible to accurately position the workpiece in the center of the mold.

When the work is unclamped after being loaded, the inner fingers project due to the action of the compression spring, and the work is prevented from shifting from the center by the compression spring that urges the movable finger. There is no deviation from the center.

〔Example〕

An embodiment of the present invention will be described in detail with reference to the drawings. In FIG. 1, reference numeral 1 denotes a transfer feeder provided in a transfer press (not shown), and a pair of feeds are provided along a conveying direction (arrow A) of a work 2. It has a bar 3.

These feed bars 3 are moved in a three-dimensional direction such as a feed direction, a lift direction and a clamp direction by a drive mechanism (not shown), and each feed bar 3
Fingers 4 and 5 are attached at positions facing each other.

Of the fingers 4 and 5, one of the fingers 4 attached to the feed bar 3 is a fixed finger as shown in FIG.
4a and inner fingers provided in this fixed finger 4a
It consists of 4b. The fixed finger 4a has a base end fixed to the feed bar 3 and a spring chamber 4c formed therein, and the large diameter portion 4d of the inner finger 4b is formed in the spring chamber 4c.
Is housed.

The inner finger 4b is composed of a large diameter portion 4d and a small diameter portion 4e, and the small diameter portion 4e is fixed finger 4a from a guide hole 4g having a bush 4f on the inner surface formed at the tip of the fixed finger 4a.
It is projected toward the tip of the so that it can appear and disappear freely.

A compression spring 4h is housed in the spring chamber 4c and urges the inner finger 4b so that the small diameter portion 4e projects forward of the fixed finger 4a.

On the other hand, the finger 5 attached to the other side of the feed bar 3 is a movable type finger similar to the conventional one, and a pair of guide rods 5b are slidably supported by a supporting member 5a fixed to the feed bar 3 and these guide rods 5b. Support plate 5c fixed between the front ends of
The finger body 5 is fixed to the.

A spring chamber 5e is formed at the center of the support member 5a, and the support plate 5c and the finger body 5d are biased forward by a compression spring 5f housed in the spring chamber 5e.

The tip shapes of the finger body 5d and the fixed finger 4a are
As the processing of the work 2 progresses, the work 2 has a shape that is easily clamped.

[Effect of device]

As described in detail above, the present invention provides the fixed finger 4 having the inner finger 4b on one side of the feed bar 3,
Since the movable type fingers 5 are provided on the other side, when the work 3 is clamped by these fingers 4 and 5, the compression springs 4h and 5f for urging the inner finger 4b and the finger body 5d are bent, so that each finger is not bent. Even if there is an error in the dimension between the distances 4 and 5 and the dimension of the work 2, the feed bar 3 can be clamped without bending.

When the work 2 is clamped, the inner finger
Since the tip 4b of the fixed finger 4a abuts on the work 2, the work 2 clamped by the positioning function of the fixed finger 4a is not displaced from the center of the mold, and the work 2 When each feed bar 3 is moved in the unclamping direction to unclamp,
Since the compression springs 4h and 5f that bias the inner finger 4b and the finger body 5d are restored at the same time, the problem that the work 2 is pushed by one of the fingers and the center of the work 2 is displaced from the center of the mold is eliminated. can do.

[Brief description of drawings]

The drawings show one embodiment of the present invention, FIG. 1 is an overall plan view, FIG. 2 is a sectional view taken along line II-II of FIG. 1, and FIG. 3 is taken along line III-III of FIG. A cross-sectional view and FIG. 4 are conventional explanatory views. 2 is work, 3 is feed bar, 4 and 5 are fingers, 4b
Is an inner finger, 4h and 5f are compression springs, and 5d is a finger body.

Claims (1)

[Scope of utility model registration request] 1. A transfer feeder in which fingers 4 and 5 for clamping a work 2 to be conveyed are provided at a position where a pair of feed bars 3 provided along the work conveying direction are opposed to each other. On one side, a fixed finger 4 is provided, and on the other feed bar 3, a finger body 5d is provided with a movable finger 5 urged toward the fixed finger 4 side by a compression spring 5f. , The compression spring 4h biases the tip so that it projects from the tip of the fixed finger 4, and
When work 2 is clamped between 4 and 5, work 2
A finger device for a transfer feeder, which is provided with an inner finger 4b which is pushed by and is immersed in the fixed finger 4.