JP2000025930A - Vibrating parts feeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To discharge workpieces from a parts feeder stably at a constant speed by preventing their sticks or the like. SOLUTION: The parts feeder 1 has at its discharge section 5 a workpiece discharge means 6 comprising two feed rollers 11 that are spaced parallel with each other so as to receive the stem of rodlike workpieces 7 situated therebetween and the diametrally expanded portion of them and that have at least alternatively in their periphery a spiral groove 12 on which the diametrally expanded portion of the rodlike workpieces 7 is locked. The workpiece discharge means 6 is connected to a drive means 17 that rotates both the feed rollers 11 thereof in respective directions that feed the received workpieces 7 forward.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibratory parts feeder, and more particularly to a parts feeder for aligning and feeding a rod-shaped workpiece having an enlarged diameter portion at one end.

[0002]

2. Description of the Related Art A large number of bar-shaped workpieces having an umbrella portion at one end, such as semi-finished engine valves, are put into a vibrating bucket, and the workpieces are aligned and aligned in a single row for the next machining step. Vibrating parts feeder that feeds out one by one
(Hereinafter, abbreviated as “parts feeder”) is known.

FIGS. 3 and 4 show a conventional parts feeder.
This shows an example of (1), in which a circular dish-shaped bucket (3) is attached to the upper part of a vibration table (2).
The outer peripheral portion in (3) is an alignment surface (4) that is gradually inclined upward. At the end of the discharge portion (5) connected to the bucket (3) in a tangential direction, a parallel bar type chute (6) composed of two obliquely downward round bars parallel to each other is attached to the bracket (3). 9). Below these round bars, a pair of support bars (10)
Is also provided.

[0004] A semi-finished product of an engine valve (hereinafter referred to as a work) put into a bucket (3) of a parts feeder (1).
In (7), the umbrellas are arranged in a line on the alignment surface (4) with the umbrella part directed in the traveling direction by the vibration from the shaker table (2), and the discharge part (5)
And is transferred to the chute (6). shoot
The work (7) transferred to (6) slides down by its own weight in a state where the lower surface of the umbrella portion is supported by the two round bars and the shaft portion is suspended from between the two round bars.

[0005]

In the above-mentioned conventional parts feeder (1), the bucket (3) has a round bar-shaped work guide (not shown) and a parallel bar type chute (6).
, The wear is surprisingly fast, and those worn parts cause the work (7) to be caught.

[0006] Further, since the work (7) is free downhill due to its own weight, the work (7) may stagnate in the discharge section (5) of the parts feeder (1), or the discharge speed may vary. In addition, excess or deficiency in the discharge amount of the work occurs, causing trouble in the next process. Furthermore, even if the discharge amount of the work is made constant to some extent by adjusting the vibration intensity of the parts feeder (1), the discharge speed varies due to wear of the chute (6) and the like.

SUMMARY OF THE INVENTION In view of the above problems, the present invention provides a discharging means in place of a parallel bar type chute to prevent the work from being caught or stagnated and to discharge the work at a stable and constant speed. The purpose is to provide a vibrating parts feeder.

[0008]

According to the present invention, the above-mentioned problem is solved as follows. (1) In a vibratory part feeder that sequentially arranges a number of bar-shaped workpieces having an enlarged diameter portion at one end and sends them one by one, a shaft portion of the bar-shaped workpiece can be inserted into a discharge part of the part feeder. And two helical grooves which are arranged in parallel with each other at an interval so as to be able to receive the enlarged diameter portion, and which have at least one of the outer peripheral surfaces capable of engaging the enlarged diameter portion of the rod-shaped work. A work discharging means comprising a conveying roller is provided, and both of the conveying rollers in the work discharging means are linked to a driving means for rotating the received work in a direction of sending the received work forward.

(2) In the above item (1), the rotation direction of both transport rollers of the work discharge means is outward.

[0010]

1 and 2 show an embodiment of a vibrating parts feeder (1) of the present invention. FIG.
FIG. 2 is a side view of only the work discharging means (6).

The basic structure and operation of the parts feeder itself are substantially the same as those of the conventional parts shown in FIGS. 3 and 4, and, in brief, reference numeral (2) denotes a vibrating table, and (3) Is a circular dish-shaped bucket, (4) is an alignment surface of the work (7), (5) is a discharge unit, (6) is a work discharge means, and (7) is a work similar to the conventional one.

The end portion (5a) of the discharge portion (5) is cut into a V-shape in plan view, and is further bent in a V-shape at the center as shown by reference numeral (5b). .

The discharging means (6) is composed of two conveying rollers (11) arranged in parallel at a slight distance from each other, and spiral grooves (12) facing in opposite directions are formed on their outer peripheral surfaces. Is formed.

As shown in FIG. 2, two transport rollers (11)
Is rotatably supported at both ends by a frame (13), and the frame (13) is a frame elastically supported on a base (14).
(15) It is fixed diagonally on the top with the sending direction downward.

At the upper end (right end) of the shaft of each transport roller (11),
A gear (16) is fixed, and these two gears (16) mesh with a drive gear (18) of a motor (17) mounted on a gantry (15), and both transport rollers (11) As shown by the arrows in FIG. 1, they are rotated in opposite directions (outward). When both transport rollers (11) are rotated outward, the spiral groove (12)
The work (7) having the umbrella portion locked is discharged to the left in the drawing.

The work (7) discharged from the end portion (5a) of the discharge portion (5) of the parts feeder has a spiral groove (2) of two transport rollers (11) whose undersides of the umbrella portion rotate in opposite directions. It is locked by 12) and quickly moved forward. When the shaft end of the work (7) comes off the end (5a), the shaft is
(11) Fall in between and droop.

Thereafter, the workpiece (7) is fed forward at a constant speed while being locked in the spiral groove (12) by the rotation of the transport roller (11) while maintaining the vertical posture, and the front end of the discharging means (6) Is sent to the chute (19) and the like linked to. Although the transport roller (11) is inclined downward, the feeding of the work (7) depends on the rotation of the spiral groove (12), and the inclination serves to assist this.

[0018]

According to the present invention, the rod-shaped work does not slide down on the round bar inclined by its own weight as in the prior art, but is fixed in the spiral groove by the rotation of the transport roller. Since the work is sent at a high speed, the work is not stuck in the middle of the work and is stably sent at a predetermined interval.
Further, since the work is quickly separated from the parts feeder by the spiral groove, the work does not stay at the discharge section. Further, the discharge speed of the workpiece can be freely controlled by the rotation of the motor without depending on the magnitude of the vibration of the parts feeder.

According to the second aspect of the present invention, since a force for pulling the rod-shaped workpiece between the transport rollers is not applied, the wear of the transport rollers is reduced.

[Brief description of the drawings]

FIG. 1 is an overall plan view of a vibrating parts feeder according to the present invention.

FIG. 2 is a side view of the work discharging means.

FIG. 3 is a side view of a conventional vibrating parts feeder.

FIG. 4 is a plan view of the same.

[Explanation of symbols]

 (1) Parts feeder (2) Vibration table (3) Bucket (4) Alignment surface (5) Discharge part (5a) End (6) Work discharge means (7) Semi-finished engine valve (rod work) (12) Spiral groove (13) Frame (14) Base (15) Stand (16) Gear (17) Motor (drive means) (18) Drive gear (19) Chute

Claims (2)

[Claims] 1. A vibrating parts feeder for feeding a number of bar-shaped works having an enlarged diameter portion at one end in a line and sequentially feeding them one by one, wherein a shaft portion of the bar-shaped work is inserted into a discharge part of the parts feeder. And a helical groove that is arranged parallel to and spaced from each other so as to be able to receive the enlarged diameter portion, and that is capable of engaging the enlarged diameter portion of the rod-shaped work on at least one of the outer peripheral surfaces. A vibratory parts feeder, comprising: a work discharge means comprising two transfer rollers; and a drive means for rotating both of the transfer rollers in the work discharge means in a direction in which a received work is sent forward. . 2. The vibratory parts feeder according to claim 1, wherein the rotation direction of both transport rollers of the work discharging means is outward.