JPS58207220A - Work feeder - Google Patents

Abstract

PURPOSE:To feed the works reliably while separating each other, by forming a thin neck section below a guide rod penetrating through the work and providing a work receiving pin below the guide rod while providing a shutter and means for biasing the work at the side of thin neck section. CONSTITUTION:A guide rod 30 for penetrating through the works 2 has the lower section constructed with a thin neck section 31 and a tapered section 32 where the work 2 is supported at the advance position (dot line) of a shutter 50 provided at the side of the thin neck section 31. The second work 2 from the bottom is supported by a chuck nail 60 and after the pallet 7 has lifted to engage the work receive pin 8 with the lower end of the guide rod, the shutter 50 will retreat to the solid line position and the push rod 4 will push the lowermost work 2 to remove from the second work, then the lowermost work 2 is guided to the guide rod tapered section 32 and mounted on the pallet 7.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a workpiece supply device, and more particularly to a workpiece supply device that separates workpieces that are in close contact with each other and supplies them one by one.

Conventionally, as this type of work supply device, there is one shown in FIG. Perpendicular to base 1 and also perpendicular to base 1
A guide rod 3 is provided with its lower end separated from the upper surface by a distance slightly larger than the thickness of one work piece 2, and this guide rod 3
A large number of workpieces 2 are guided and arranged in a central hole 2a and stacked on a base 1. Incidentally, depending on the workpieces 2, there are cases in which the workpieces 2 are in close contact with each other and do not fall even if an attempt is made to drop the workpieces simply by their own weight. Examples of this include a case where the works 2 themselves have adhesive properties and are in close contact with each other, and a case where the works 2 have smooth surfaces and are in close contact with each other. In order to feed the workpieces 2 that are in close contact with each other one by one, a workpiece ejecting rod 4 is used from the side of the workpiece 2 that is lowered onto the top surface of the base 1 to feed it one by one at the same height as the base 1 or to a certain extent. Place it on the shutter 5 which is located at a low position. That is, the works 2 are released from close contact with each other, are positioned on the shutter 5 by a stopper 6 fixed separately from the shutter 5, and are placed on the shutter 5. As the shutter 5 moves to the left in the figure, the workpiece 2, which is prevented from moving with the shutter 5 by the stopper 6, is placed on a workpiece holder protruding from the stand or pallet 7, as shown by the two-dot chain line at the pin 8. It is supplied fitted in the same way.

However, in such conventional feeding devices,
Workpiece 2 is sent onto 7-layer 5 by workpiece ejector 4
The center hole 2a of the workpiece 2 can be accurately positioned in the case of a workpiece with widely varying external dimensions or easily deformed, or even in the case of a rebound of the workpiece 2 due to the stopper 6. There was a risk that the workpiece holder would not fit into pin 8 due to this failure.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a workpiece feeding device that can separate and reliably feed even workpieces that are in close contact with each other one by one, regardless of the external dimensions and shape. For this purpose, the present invention supports the lower end of the guide rod by engaging it with a workpiece support pin, forming a narrow neck part in a part of the guide rod, and using this narrow neck part, one of the workpieces aligned with the guide rod is ejected from the workpiece ejecting rod. It is characterized by having a configuration in which the workpiece alignment is shifted from other workpiece alignments.

The present invention will be explained below based on the drawings.

FIG. 2 shows an embodiment of the present invention, in which parts or members that are the same or equivalent to those of the prior art are designated by the same reference numerals and redundant explanations will be omitted.

In the figure, reference numeral 30 denotes a guide rod with a free end at the bottom, and has a narrow neck portion 31 at its lower end and a threaded portion 32 that extends in diameter to the lower end.
is formed. This tapered part 32 is made to be as short as the tapered part 32 provided on the upper side of the narrow neck part 31,
Thereafter, the guide rod 30 may be made such that the standard thickness of the guide rod 30 is maintained to some extent. A recess 33 is formed at the lower end of the guide rod 30, and the workpiece receiver protruding from the pallet 7 that rises from below when the workpiece 2 is supplied engages with the pin 8 in a concave-convex manner. The concave and convex portions may be provided in opposite directions, or they may simply be in contact with each other, and the lower free end of the guide rod 30 can be fixed at a desired time to withstand lateral loads. Reference numeral 50 denotes a shutter, which moves the descending workpiece 2 to the narrow neck portion 31 and moves it back and forth between a position narrower (two-dot chain line) and a wider position (solid line) than the diameter or width of the workpiece 2 so as to allow the workpiece 2 to pass through. It is set freely. Among the workpieces 2 guided and aligned by the guide rod 30 in the hole 2a, the second workpiece 2 from the shutter 50 is chucked, and the workpieces 2 above it are chucked.
A chuck claw 60 is provided to hold the workpiece, and the workpiece holder is fixed even more strongly against the lateral load of the guide rod 30 together with the engagement with the pin 8.

Next, the operation will be described. A large number of works 2 are stacked on the shutter 50 at the position shown by the two-dot chain line in close contact with each other along the guide rod 30. 2 from the bottom of this work 2
The outer periphery of the workpiece 2 is chucked by the chuck claw 60, and the workpiece 2 located above the chucked workpiece 2 is held.

On the other hand, the pallet 7 rises above the lower end of the guide rod 30, and the workpiece receiver engages with the pin 8 in a concave and convex manner.

In this state, the shutter 50 retreats to the position indicated by the solid line, and then when the workpiece ejection rod 4 pushes out the lowest workpiece 2 toward the narrow neck part 31, the workpiece 2) is released from the chucked workpiece 2. While moving through the gap created around the narrow neck part 31, the workpiece receiver is guided by the narrow neck part 31 and the tapered part 32 of the guide rod 30, and only one workpiece is reliably supplied to the pin 8 as shown by the two-dot chain line. Ru. Thereafter, the shutter 50 returns to the position indicated by the two-dot chain line, the chuck claw 60 opens, the aligned workpieces 2 are lowered onto the shutter 50, and the second workpiece 2 from the bottom is chucked by the chuck claw 60.

On the other hand, the supplied pallet 7 is placed in the recess 3 of the guide rod 30.
3, the workpiece receiver is lowered so that the pin 8 is removed, and is carried to another process. A new pallet 7 is brought to the lower end of the guide rod 30, completing one cycle of work.

Note that the shutter 50 may be configured to open after the workpiece ejecting rod 4 is operated.

As explained above, according to the present invention, a narrow neck part is formed in a part of the guide rod, and the workpieces that are in close contact with each other are shifted through the gap between the guide rod and the hole in the workpieces, thereby separating the workpieces and feeding them one by one. However, since the workpiece receiver is guided to the bin by a guide rod, the structure is simple and separation and supply can be ensured. Since the tapered part is provided, the workpiece can be fed smoothly without getting caught. The workpiece receiver can securely fix the lower end of the guide rod by engaging the bin with the guide rod.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of a conventional work supply device, and FIG. 2 is a schematic diagram of a work supply device according to the present invention. 2... Work, 3, 30... Guide rod, 4... Work ejecting rod, 5, 50... Nyanota, 8... Work holder is a bottle, 60... Chuck jaw. Applicant Rico Co., Ltd. - Figure 2

Claims (3)

[Claims] (1) A guide rod at the lower free end of which a narrow neck is formed at the lower end, through which the workpieces are inserted and guided in alignment, and a workpiece located below the guide rod and provided at the lower end of the kite rod. The receiving workpiece receiver includes a pin, a shutter that supports the workpiece that has descended to the narrow neck part at a position corresponding to the narrow neck part, moves in a plane perpendicular to the guide rod, and allows the workpiece to pass; A workpiece supply device comprising workpiece biasing means for moving a descending workpiece in a direction perpendicular to the guide rod. (2) The workpiece supply device according to claim 1, wherein the guide rod has a tapered portion formed at a lower end thereof, the diameter of which increases from the narrow neck portion. (3) The workpiece feeding device according to claim 1 or 2, wherein the guide rod and the workpiece receiver are engaged with each other by a pin.