JPS6019065Y2 - Headed bar supply device - Google Patents

Description

[Detailed description of the invention] The present invention relates to a device that scoops up headed bars fed into a hopper with an oscillating scoop plate, and supplies them in alignment to a chute. It is an object of the present invention to provide a headed bar supply device that continuously supplies a bar without any problems.

In the conventional headed bar supply device, when the headed bar in the hopper is scooped up by a scoop plate and sent to the gate part that only allows correctly aligned headed bars to pass through, the leading headed bar may be in an irregular position. In this case, there was a problem that all the headed rods in the normal position at the rear could not pass through and could not be supplied.

In particular, rods with heads with short shafts tend to be in irregular positions, causing many troubles and often not being usable as aligning and feeding devices.

The present invention solves the above problems by attaching a simple air circuit to the conventional aligning and supplying device.

A conventional alignment device of this type is shown in FIGS. 1 to 4, and its basic configuration will be explained below.

Reference numeral 1 denotes a semicircular plate, and a swinging rod 4 is swingably attached to a shaft 3 fixed at the center of the outer circumferential arc 2, and the lower end of the swinging rod 4 is slightly wider than the diameter of the shaft of the headed bar. A fan-shaped blade 5 having a first groove 5A smaller than the diameter of the blade is fixed.

A roller 6 is in contact with the swing rod 4, and the roller 6 is rotatably attached to an arm 8 fixed to a shaft 7 which is rotated by a motor (not shown).

A pair of chutes 9 are fixed to the upper part of the semicircular plate 1 at an interval a little wider than the diameter of the shaft of the headed bar and smaller than the diameter of the head, forming a second groove 9A. A head regulating plate 10 is attached to the head.

Further, the slide plate 11 has a guide groove 12 parallel to the chute 9.
is formed.

The slide plate 11 is attached to the head regulating plate 10 by the pin 13 being slidably fitted into the guide groove 12.

A block 14 is fixed to the slide plate 11, and a spring-loaded pin 15 is attached to the rear end.

A spring hook pin 16 is also attached to the head regulating plate 10, and a tension spring 17 is attached to the spring hook pins 15 and 16.

On the other hand, a gate plate 18 whose mounting position can be adjusted in a direction perpendicular to the chute 9 is fixed to the upper end of the slide plate 11.

A gate 20 having an outline slightly larger than the projected shape perpendicular to the axial direction of the head of the headed bar 19 is formed at its lower part.

A roller 22 is rotatably attached to the upper end of the swing rod 4 by a pin 21 and abuts against the block 14.

Next, this effect will be explained.

The swing rod 4 swings by a roller 6 that revolves under the rotation of a motor (not shown), and the blade 5 similarly moves up and down.

When the blade 5 descends, it scoops up a large number of headed bars loaded into the hopper 23, and when it rises to the top dead center, the scooped up headed bars slide into the chute 9.

While the blade 5 moves from the bottom dead center to the top dead center, the swing rod 4
The roller 22 at the upper end rotates about the shaft 3 in the A□ force direction.

At the same time, the slide plate 11 is always kept at B by the tension spring 17.
□ Since the block 14 is biased in the direction of the arrow, it moves parallel to the chute 9 while being guided by the guide groove 12 and pin 13 while in contact with the roller 22.

Similarly, the gate plate 18 fixed to the slide plate 11 also moves.

By the time the blade 5 reaches the top dead center, the gate plate 18 has passed the intersection of the chute 9 and the chute arc portion 24, which is continuous with the outer circumferential arc 2 of the semicircular plate 1, and has moved close to B□.

Therefore, the headed bar in an irregular position that has slid on the chute 9 is prevented from passing by the gate 20.

When the blade 5 starts to descend from the top dead center, the roller 22 attached to the swinging rod 4 also moves in the direction of the N arrow, so the blade detent 14 is pushed against the tension spring 17, and the slide plate 1
1 also moves in the direction of the arrow B2, and at the same time the gate plate 18 also moves from B1 to B2, pushing up the headed bar in the irregular position over the chute 9 and dropping it into the hopper 23.

However, in the above configuration, when the headed bar is scooped up by the fan-shaped blade 5, when the most advanced headed bar moves onto the chute 9 in an irregular posture, the headed bar in the irregular posture moves to the gate 20. There are problems in that the feeding of the aligned headed bars is also blocked, and that headed bars in an irregular position get caught in the groove 9A of the chute 9 and become clogged.

The present invention is intended to eliminate the above-mentioned drawbacks, and based on the above configuration, one embodiment of the present invention will be described with reference to FIGS. 5 and 6.

25 is a plate cam fixed to the swinging rod 4, and the end face 26
is formed so that the air limit switch valve 27 is opened from just before to just after the blade reaches top dead center.

28 is an air pipe connected to a compressed air source (not shown);
It communicates with an air limit switch valve 27 via a flow control valve 29 .

30 is an air nozzle, air limit switch valve 27
The opening end 31 is fixed at a side position of an end intersection 32 of the sheet 9 and the blade 5.

Now, when the blade 5 scoops up multiple screws and ascends, the headed bars arranged in an irregular direction, such as sideways, are scooped up as they are until just before the top dead center, but just before they are transferred from the blade 5 to the chute 9. It is blown away by the compressed air blown out from the air pipe nozzle 30 and falls into the hopper.

Correctly aligned headed bars are guided by the first groove 5A provided in the blade 5 or the second groove 9A formed by the chute 9, and the amount of compressed air is adjusted in advance depending on the size and weight of the headed bars. Since it is set by the flow rate control valve 29, the gate 20 will not be blown away.
and is sequentially and continuously supplied to the chute 9.

As is clear from the above examples, the present invention is equipped with a compressed air outlet that can remove only those in an irregular position from among the headed bars that have been scooped up by the blade. It is possible to supply short machine screws, etc., which are easily damaged, one after another.

Furthermore, since the compressed air is opened and closed in synchronization with the operation of the blade, it is possible to effectively supply the headed bar without wasting compressed air.

[Brief explanation of drawings]

Figure 1 is a side view of the main parts of a conventional headed bar supply device, Figure 2 is a sectional view of the main parts of Figure 1, Figure 3 is a front view of the gate plate of Figure 1, and Figure 4 is Fig. 1 is a front view of the gate plate showing a state in which the irregularly positioned headed bar is blocked, Fig. 5 is a front view of the main part of the gate plate in an embodiment of the present invention, and Fig. 6 is the It is a side view of the main part of a figure. 5...Blade, 5A...First groove, 9
...Chute, 9A...Second groove, 27
...Air limit switch valve, 29...
...Control valve, 31...Opening.

Claims (1)

[Scope of utility model registration request] A blade that has a groove that is larger than the diameter of the shaft of the headed bar and smaller than the diameter of the head and that can move up and down in the hopper, and a blade that is larger than the diameter of the shaft of the headed bar. and a chute having a second groove smaller than the diameter of the head, and an opening for blowing out compressed air from just before to immediately after the first groove and the second groove are continuous.
The compressed air is opened and closed by a cam that is placed around the intersection of the continuous groove and the second groove and operates in synchronization with the blade, and an air limit switch valve installed in the main body of the device, and also controls the air flow rate of the compressed air. Headed bar supply device equipped with a control valve to adjust the