JPS6040495Y2 - Separation and feeding device for headed bars - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for separating and feeding headed rods such as screws and rivets that are continuously aligned and fed one by one per cycle.

Conventionally, various devices of this type have been devised, but their structures are relatively complex or their operations lack stability.

For example, Tokuko Sho 4l-212 ()! The device described in the publication integrates a slider that alternately separates or communicates the chute and the bar feed hole of the adjacent slider block, and a finger piece that separates the bars aligned in the chute one by one. The slider cam moves in the same direction as the chute using a slider cam that moves in conjunction with a plunger that is reciprocated by compressed air.The structure is relatively complex, and the fingers are located on the legs further below the neck of the bar. Since the feeding of the bar material is blocked and separated, this bar material is used particularly in the case of a headed bar material such as a screw with a small diameter and a relatively short leg length used for assembling cassette tapes, watches, etc. When separated, the bar often falls over or overlaps with the following bar, and therefore there is a problem in that the reliability is not sufficient.

The present invention was devised with the aim of solving these problems and providing an apparatus that is particularly suitable for separating and feeding headed bars with small diameter legs and relatively short leg lengths, and includes the following: An embodiment of the present invention will be described based on the drawings.

Figure 1 shows the overall outline of the present invention, in which 1 shows a rail mounting that supports the seating surface of a screw 2 and is connected to a rail 3 that continuously aligns and has ears at the same intervals and has the same upper surface. Part 1a
It is a main body having a.

A fluid piston cylinder 4 is fixed to the side of the main body 1.

2 and 3, a guide groove 1b is formed in the main body 1, in which a slide block 5 is housed so as to be able to reciprocate in a direction perpendicular to the extension line of the rail 3.
A slide block 5 built into the hydraulic piston cylinder 4 is configured to be movable integrally with a fitting member 6 fixed to the tip of the piston rod 4a of the fluid piston cylinder 4.

A fitting hole 1c is formed at the bottom of the main body 1 at a predetermined distance from the central extension line of the rail 3, and as shown in FIG. 8, this fitting hole 1c has a supply hole through which the screw 2 can pass. 7a, and a pipe joint 7 to which a feed pipe (not shown) is connected is fitted.

An annular groove 7b is formed on the outer periphery of the pipe joint 7, and a small hole 7c is bored downwardly in communication from the groove 7b to the supply hole 7a.

The main body 1 is also provided with a communication hole 7d for feeding compressed air into the annular groove 7b, and this hole 7d receives pressurized air from a compressed air source (not shown) every time the screw is fed. An air pipe 8 is connected to a solenoid valve (not shown) which is operated to operate the air pipe 8.

The pipe joint 7 is attached to the main body 1 so that its tip fits into the annular groove 7b.
It is fixed by a set screw 9 screwed into.

Further, on the central extension line of the rail 3 of the slide block 5, there is a line that coincides with the slide block 5 when it moves to one side (to the left in FIG. 2), that is, in the backward stroke.
A vertical hole 5a is formed that corresponds to the rail mounting portion 1a of the main body 1, and this vertical hole 5a communicates with the rail 3 via a notch 5b through which the leg of the screw 2 from the rail 3 can pass. .

This vertical hole 5a is configured to coincide with the supply hole 7a of the pipe fitting 7 that is fitted and fixed in the fitting hole 1c when the slide block 5 moves to the other side (to the right in FIG. 2), that is, in the forward stroke. .

Further, a sliding groove 5C is formed on the upper surface of the slide block 5 on an extension line of the rail 3, and the sliding groove 5C has a diameter larger than that of the leg so as to support the bearing surface of the screw 2 from the rail 3. A receiving plate 10 is provided so as to be reciprocally movable, and has support portions 10a formed at intervals smaller than the diameter of the head, and has a cam pin 11 that projects upwardly implanted on its upper surface.

The cam pin 11 engages with a cam groove 12a formed diagonally on the lower surface of the lid 12 disposed on the upper part of the main body 1, and when the slide block 5 moves rightward, the support portion 10a of the receiving plate 10 is retreated from the vertical hole 5a of the slide block 5.

This lid body 12 is fixed to the main body 1 with a spring body 13.

Next, the operation of this embodiment will be explained.

When the piston rod 4a of the fluid piston cylinder 4 is retracted, the rail mounting portion 1 is removed as shown in FIGS. 4 and 6.
After the first of the supplied screws 2 is supported by the support part 10a of the receiving plate 10, the solenoid valve is operated and the slide block in the main body 1 is moved by the piston rod 4a of the fluid piston cylinder 4. 5 moves to the right as shown in FIG.

Due to this movement of the slide block 5, the screw 2 supported by the support portion 10a is moved to the right, and the receiving plate 10 is also gradually retreated.

When the slide block 5 reaches the rightmost position in this manner, the support portion 10a of the receiving plate 10 completely retreats from the vertical hole 5a, and at the same time, the vertical hole 5a moves into the supply hole 5a as shown in FIG.
The screw 2 falls into the supply hole 7a at the same time as the point a.

At this time, the succeeding screws 2 aligned with the rail mounting portion 1a are separated by the cutout portion 5b of the vertical hole 5a of the slide block 5, and their supply is blocked.

This subsequent screw 2a is blocked reliably even if the leg length is relatively short compared to the head diameter, since the entire leg portion below the seat surface is blocked by the slide block 5.

Further, such a separated screw 2 connects the seat surface to the support part 10a.
During this time, the legs are maintained in a hanging posture because the legs are supported by the legs and transported to the position of the supply hole 7a.

When the solenoid valve operates and the piston rod 4a retreats, the slide block 5 returns to its original position and the receiving plate 10 also moves forward, so that the support portion 10a reaches above the vertical hole 5a.
The next screw 2, which has been blocked by the slide block 5, is supported by this support portion 10a.

Furthermore, during the backward stroke of this slide block 5, the supply hole 7 is first opened.
Pressurized air is pumped from the small hole 7c to the screw 2 that has fallen onto the screw 2, and the entrance of the supply hole 7a is closed by the slide block 5, so the compressed air is pumped without backflowing, so the screw 2 It is reliably fed to a predetermined location via the feeding pipe.

By repeating the above cycle, it is possible to continuously separate and supply the screws 2.

As is clear from the description of the above embodiments, the separation and supply device of the present invention has a fluid piston cylinder 4 and a slide block 5.
Just by reciprocating the rods, you can align and feed the headed rods such as rivets on the rails with the supporting part of the receiving plate.
The headed bar is supported and separated, and then transferred to the upper part of the supply hole.The headed bar supported by the supporting part is dropped into the supply hole by the retreat of the receiving plate, and is fed into the supply pipe to a predetermined location. can do.

Therefore, this structure is relatively simple and compact,
Moreover, since the slide block closes the entrance of the supply hole when compressed air is being fed, the compressed air does not leak upward.
Conventionally, an air stopper was required to prevent air leakage, but this is no longer necessary.

Furthermore, the bearing surface of the headed bar is supported by the supporting part of the receiving plate, and separation from the following headed bar is performed by the notch in the vertical hole of the slide block. If there is no need to provide fingers, and the bearing surface of the headed bar rests on the supporting part of the receiving plate, it will be forcibly carried onto the vertical hole, causing jamming and stopping the operation of the device. Therefore, it is possible to provide an extremely reliable and stable headed bar separation and feeding device with no breakage.

Incidentally, this is particularly noticeable in the separate supply operation of screws with extremely small diameter legs and relatively short leg lengths used for assembling cassette tapes, watches, etc.

[Brief explanation of the drawing]

Fig. 1 is a schematic overall plan view of the present invention, Fig. 2 is an enlarged plan view of the main part of Fig. 1, Fig. 3 is a sectional view taken along the line 1-1 in Fig. 2, and Fig. 4
5 and 5 are plan views of the headed bar separation and supply device with the lid removed, and FIG. 4 shows the first headed bar supported by the support part of the receiving plate. Fig. 5 shows the bar falling into the supply hole, and Fig. 6 shows the same operating state as Fig. 4 of the bar separation and feeding device with a head attached with a lid. 7 is a sectional view taken along the line IV, FIG. 7 is a sectional view taken along the line ■-■ in FIG. Figure■
It is a sectional view taken along the −■ line. 1 is the main body, 1a is the rail attachment part, 1b is the guide groove, 1 c
is a fitting hole, 2 is a spring 3 is a rail, 4 is a fluid piston cylinder, 4a is a piston rond, 5 is a slide block,
5a is a vertical hole, 5b is a notch, 5c is a sliding groove, 6 is a fitting member, 7 is a pipe joint, 7a is a supply hole, 7b is an annular groove, 7c
is a small hole, 7d is a communication hole, 8 is an air pipe, 9 is a set screw, 1
0 is a receiving plate, 10a is a support part, 11 is a cam pin, 12
12a is a cam groove, and 13 is a spring body.

Claims (1)

[Claims for Utility Model Registration] In a device for separating and feeding headed bars one by one per cycle, which are continuously aligned and supplied, a main body provided at the tip of a rail 3 that supports and aligns and supplies headed bars on the bottom surface. 1, a supply hole 7a of a pipe joint 7 which is capable of reciprocating in a direction perpendicular to the extension line of this rail 3, communicates with the rail 3, and is attached to a fitting hole 1c at the bottom of the main body 1;
A slide block 5 is formed with a vertical hole 5a that communicates with the two in the forward stroke, and the slide block 5 is capable of reciprocating in the extension direction of the rail 3 on the upper surface of the slide block 5, and has a head diameter larger than the diameter of the leg of the bar with a head at the tip. A receiving plate 10 having support portions 10a formed at smaller intervals and provided with a cam pin 11 projecting upward on the upper surface, and a slide block 5 that can engage with the cam pin 11.
and a lid body 12 having an inclined cam groove 12a formed on its lower surface to be operated so as to reach the supply hole 7a during the forward stroke.