JPH0133532Y2 - - Google Patents

Description

[Detailed description of the invention] This invention uses a scoop plate to scoop up a large number of stored parts with heads and legs, such as screws, rivets, pins, etc., and transfers them to a rail until they reach a predetermined position. The present invention relates to a component supply device that reliably drops misaligned components scooped up by a scooping plate from a rail.

Generally, a rail that arranges and supplies a large number of parts scooped up by a scooping plate to a predetermined position is made up of two parallel plates, and supports the lower surface of the head of the parts while allowing the legs to hang down and align the parts. configured to supply. The upper surface of this rail is flat over its entire length, so when the parts scooped up by the scoop plate in an irregular position are mixed with the parts in a normal position and fed to the rail, the misaligned parts are removed. It is becoming more and more common for people to transfer onto the rail while maintaining their posture. When these parts with misaligned positions are placed on the rail, these parts are returned to the hopper by the misaligned parts removal device, but at that time, all subsequent parts with normal positions are also returned, and the supply of parts is There are drawbacks such as a decrease in efficiency. In order to prevent parts from being picked up in such misaligned positions, there is a parts feeding device disclosed in Japanese Utility Model Publication No. 53-3559. In this parts supply device, the side wall of the groove for arranging the parts on the upper surface of the scoop plate is shaped like a blade. Therefore, when the scoop plate scoops up parts, the parts that ride on the blade shape part fall into the hopper due to their own weight, and only the parts in a normal posture are scooped up by the scoop plate.
In this component supply device, the scoop plate can scoop up only components in a normal posture and supply them to the rail, and there are no components that are merely lying in an irregular posture on the rail. However, when the scoop plate scoops up a part, a part of the part may be caught in the groove and lie down, or as shown in FIG. A part of the parts are sandwiched and positioned lying on the edge of the rail 9, and may reach the upper surface of the rail 9 as the scoop plate 1 rises. In this case, when such misaligned parts reach the rail 9, since the upper surface of the rail 9 is flat, they will be held in that position by the rail 9, and the misaligned parts removal device will operate. When parts with misaligned levers are removed, subsequent parts in normal postures are also removed at the same time, resulting in drawbacks such as reduced parts supply efficiency.

The present invention aims to eliminate the above-mentioned drawbacks, and provides a component feeding device that eliminates any components that are misaligned on the rail. Examples will be described below with reference to the drawings. In FIGS. 1 to 5, reference numeral 1 denotes a scooping plate for scooping up a large number of screws B having heads and legs stored in a hopper A. This scoop plate 1 has a fan shape, and the upper surface of the scoop plate 1 is formed into a flat surface, and a groove is cut along the upper surface for the screw B to pass through. In addition, the inner and outer peripheral surfaces of this scoop plate 1 are both formed by arcuate surfaces that form part of a circle centered on a support shaft 5, which will be described later. It is configured to be movable up and down while being guided by a plate 3 and a guide plate 4. On the other hand, an arm 6 that swings about a support shaft 5 is disposed on the support frame 2, and the scoop plate 1 is integrally fixed to this arm 6. Further, this arm 6 has an elongated hole 6a formed in its center, and a guide roller 8 that rotates integrally with the main shaft 7 of the rotary drive source C fixed to the lower part of the support frame 2 is provided in this elongated hole 6a. is loosely inserted.

Further, directly above the support frame 2, there is a linear vibration unit D capable of slight vibration and a rail fixture 1.
0 is fixed. A rail 9 is fixed to a stepped portion 10a of the rail fixture 10, and one end of the rail 9 on the side of the scoop plate 1 is positioned within the hopper A. The end surface of this rail 9 is formed as a circular arc surface that forms part of a circle centered on the support shaft 5. A groove is formed in the rail 9 along its entire length in the direction in which the scoop plate 1 extends, through which the leg of the screw B can pass, and the inner circumferential surface of the scoop plate 1 slides along the end surface of the groove. Scooping board 1
When in the uppermost position, the scoop plate 1 and the rail 9 are arranged so that their respective upper surfaces form a concave angle and their respective grooves communicate with each other. Further, the upper end surface 9a of the rail 9 on the side of the scoop plate 1 is formed into a blade shape, and the blade shape is configured to be inclined from the inside to the outside of the rail 9. On the other hand, a separate supply unit E is connected to the other end of this rail 9 via a unit fixing base 11, and a screw B
Separate them one by one and use an automatic screw tightening machine (not shown)
is configured to supply.

Further, a lever 13 is provided on the support frame 2 adjacent to the arm 6 so as to be rotatable about a support shaft 12, and one end of this lever 13 is attached to the upper surface of the arm 6 via a guide shaft 14. are configured to abut. A U-shaped engagement groove 13a is formed at the upper end of the lever 13.
A guide roller 17 implanted on a slide shaft 16, which will be described later, is loosely inserted into this engagement groove 13a.
The slide shaft 16 is attached to the mounting plate 1 on the support frame 2.
It is configured to be horizontally movable along the rail 9 while being guided by a guide block 15 fixed via a guide block 8. Further, the slide shaft 16 is configured to move the guide roller 17 along the guide groove 15a as the slide shaft 16 moves.

An exclusion plate 19 is attached to the rear end of the slide shaft 16 via a head block 20, and is connected to the guide block 15 and this head block 20.
A compression spring 21 is arranged between. This compression spring 21 is attached to the head block 2.
0 and the slide shaft 16 are urged toward the rear end side of the rail 9, and the slide shaft 16 is configured to be locked to the guide block 15 by a locking member 22 at its forward end.

A removal plate 19 is swingably supported on the headblock 20, and the removal plate 19 abuts against a parallel notch (not shown) in the headblock 20, while the removal plate 19
The upper end of the exclusion plate 19 is urged to be retractable by a compression spring (not shown) disposed therein. Further, as shown in FIG. 5, the exclusion plate 19 has a notch 19a that has a slight gap between it and the top surface of the rail 9 and allows the head of the screw B on the rail 9 to pass through. has been done.

In the above component supply device, when the arm 6 rotates in response to the rotation of the rotational drive source C, the scoop plate 1 rises inside the hopper A, and the scoop plate 1 scoops up the screw B inside the hopper A. The screw B scooped up by the scoop plate 1 in a normal posture slides under its own weight and reaches the top of the rail 9 when the scoop plate 1 reaches the uppermost position. Since this rail 9 is slightly vibrating due to the linear vibration unit D, the rail 9
The upper screw B advances along the rail 9 and
It is supplied to the separation supply unit E at the tip. On the other hand, as the arm 6 rises, the lever 13 rotates and once retreats the slide shaft 16, and as the arm 6 descends, the compression spring 21
This slide shaft 16 is moved toward the hopper A side. Along with this, the removal plate 19 also moves, and the misaligned screws B on the rail 9 are removed.

On the other hand, the head of the screw B is lying in the groove of the scoop plate 1, and the screw B is in an unaligned position.
is scooped up. When this misaligned screw B slides along the groove of the scoop plate 1 due to its own weight,
It collides with the upper surface of the end of rail 9. Therefore, screw B rebounds and tilts, and in this tilted position, screw B
comes into contact with the blade-shaped portion of the rail 9, and falls from the rail 9 due to its momentum.

Further, when the scoop 1 is raised, a part of the head of the screw B may get caught in the groove on the edge of the rail 9. In this case as well, when the rake plate 1 reaches the uppermost position and reaches the upper surface of the rail 9, it is inclined along the blade shape of the rail 9 due to the position of its center of gravity, and the rail 9
fall from

As explained above, when the scooping plate for scooping up parts in the hopper is at the top position, the present invention
The upper surface of the rake plate and the upper surface of the rail are configured to form a predetermined concave angle, and the upper surface of the rail on the rake plate side, which is in communication with the rake plate, is formed into a blade shape. , it is possible to make the parts scooped up by the scooping plate in an irregular position fall off the rail by using the bounce when they collide with the top surface of the rail, and the subsequent parts in the normal position can be reliably fed onto the rail. Not only is it possible to supply parts efficiently, but even if a part of the part gets caught in the groove on the end of the rail as the rake plate rises, this part will not be able to reach the end of the rail. When it reaches the blade-shaped part, it can fall off the rail due to its own weight, which has the advantage of eliminating any misaligned parts on the rail.

[Brief explanation of the drawing]

Fig. 1 is a front view of a screw feeding device showing an embodiment of the present invention, Fig. 2 is an enlarged front view of the main parts of the present invention, and Fig. 3
The figure is a side view of the main part of Fig. 2, Fig. 4 is a front view showing the relationship between the rail and the rail fixture, Fig. 5 is a sectional view taken along the line shown in Fig. 4, and Fig. 6 is the main part of the conventional example. It is an explanatory diagram. A...hopper, B...screw, C...rotary drive source, D...linear vibration unit, E...separation supply unit, 1...scoop plate, 2...support frame,
3... Partition plate, 4... Guide plate, 5...
Support shaft, 6...Arm, 6a...Elongated hole, 7...Main shaft, 8...Guide roller, 9...Rail, 9a...
...Top end surface, 10...Rail mounting fixture, 10a...Step part, 11...Unit fixing base, 12...Spindle, 1
3... Lever, 13a... Engagement groove, 14... Guide shaft, 15... Guide block, 15a... Guide groove, 16... Slide shaft, 17... Guide roller, 18... Mounting plate, 19... ...Exclusion plate, 19a...
... Notch, 20 ... Head block, 21 ... Compression spring, 22 ... Locking member.

Claims (1)

[Claim for Utility Model Registration] In a hopper that stores a large number of parts each having a head and legs, a fan-shaped scoop plate having a groove through which the legs of the parts pass is disposed so as to be movable up and down. A rail having a groove that communicates with the groove of the plate is arranged in the extending direction of the scoop plate, and the scoop plate and the rail are arranged so that their upper surfaces form a concave angle when the scoop plate is in the uppermost position, and the rail A component feeding device characterized in that the upper end surface of the rake plate side is formed into a blade shape that slopes from the inside to the outside of the rail.