JPH10279065A - Sorting machine of headed shaft body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and surely feed a work from a supply guide to a notch on an outer periphery of a disc, by holding the work by an auxiliary equipment installed between an endless belt which is wrapped around a pulley and rotated, or a rotary roller, and a work guide face opposite to the endless belt or the rotary roller, and by adding the feeding force toward the notch on the periphery of the disc, to the work. SOLUTION: An auxiliary equipment 10 additionally mounted on a sorting machine, comprises a motor 11, a driving pulley 12 mounted on an output shaft of the motor 11, a driven pulley 13 mounted on an outlet part of a supply guide 3a in parallel with the pulley 12, and an endless belt 14 hung between the pulleys 12, 13. A work W is held between the belt 14 wrapped around the driven pulley 13, and a work guide face (a starting edge face of a guide part 2 or one of guide faces of a supply guide 3a) opposite to the belt, in this auxiliary equipment 10, the work W is fed by the rotatin of the belt 14, and the work W of the forefront line is fed into the notch 1b of a disc 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to head-mounted screws, nails, bolts, rivets, connecting pins and the like used for fastening and connecting (herein, these are collectively referred to as headed shafts). The present invention relates to a sorting machine that performs a quality inspection and removes defective products.

[0002]

2. Description of the Related Art As a sorter at the beginning, a horizontally disposed disk continuously rotating at a fixed position, a guide member disposed closely along a part of the outer periphery of the disk, and a guide member near a starting end of the guide member. A feeder for feeding a shaft body (hereinafter referred to as a work) having a head such as a screw, a nail, a bolt, a rivet, a connecting pin or the like to be sorted into a notch provided at a constant pitch on an outer periphery of the disk; The workpiece sent from the guide into the notch is moved by rotating the disk while the head of the workpiece is supported from below by the disk and the guide member, and a pass / fail inspection is performed during the movement to terminate the guide member. A method of removing a defective product at a position passing through is widely used.

In the sorter of this type, there is a problem how to accurately feed a work to be sorted from a feed guide of a feeder into a notch of a rotating disk. Since the workpieces are arranged in a line and supplied at a slow speed, the transition from the leading end of the supply guide to the notch is delayed, and the workpiece during the transition is bitten between the disc and the guide.

[0004] Japanese Patent Publication No. 60-35003 proposes a technique corresponding to this problem. The technology blows the work (screw) by air pressure and sends it to the notch,
Further, the work that has entered the notch is pressed against the disk by air pressure until it is sent between the notch and the guide member.
Hereinafter, this is referred to as an air transfer type.

[0005]

The air transfer type described above requires an air pressure source, and it is difficult to adjust the air pressure and the air blowing point. If the adjustment is bad, the workpiece may be inclined or blown out of the supply guide, and the transfer may not be performed properly. Also, the transition may be uncertain due to variations in air pressure.

It is to be noted that the protrusion of the screw from the supply guide can be prevented by stopping the floating of the work by using the holding plate. However, when the work is tilted with the holding plate, the head of the work and the holding guide are held together. The flow of the work may be stopped by being caught between the plates. Further, even if the holding plate is provided, other factors of the transfer failure cannot be removed.

Accordingly, an object of the present invention is to make it possible to more reliably feed a work from a supply guide to a notch on the outer periphery of a disk by a simpler method.

[0008]

In order to solve the above-mentioned problems, according to the present invention, an endless belt or a rotating roller which is rotated around a pulley and a work guide surface opposed thereto are provided at an outlet of a supply guide. A feeding auxiliary device for applying a feeding force to the notch on the outer periphery of the disk with the work interposed therebetween is provided.

[0009] It is more preferable that the sorting machine is provided with a clamping interval adjusting mechanism for changing the interval between the work guide surface at the opposing position by displacing the pulley or the rotating roller.

[0010] It is also preferable to provide an air nozzle which blows the workpiece being supplied toward the auxiliary device installation section in the longitudinal direction of the supply guide.

[0011]

When the rotating belt or roller is brought into contact with the workpiece, the workpiece is pushed and moved in the supply direction, and is smoothly fed into the notch by this assisting force.

Further, since the feeding force is applied by sandwiching the work between the belt or the roller and the work guide surface opposed thereto, the work is not tilted and does not jump out of the supply guide, and stable feeding is ensured. You.

Further, the movement of the workpieces supplied in a line is temporarily stopped until the disk rotates and the next notch reaches the supply point. During this time, the workpieces contacting the belt or the roller are stopped. Rotates at a fixed position and the auxiliary device is in an idle operation state, so there is no need to finely control the driving and stopping of the auxiliary device according to the movement of the notch, and it is unnecessary to control the rotation speed of the belt and the roller. . Therefore, the auxiliary device can be very simple, and the cost can be reduced as compared with the air transfer type requiring an air pressure source.

Incidentally, if the above-described clamping interval adjusting mechanism is provided,
The same machine can be used to sort work of different sizes, and the range of use of the sorter is expanded.

Further, an apparatus having an air nozzle in the middle of the supply guide requires an air pressure source and has no cost advantage. However, the work can be smoothly moved in the supply guide, and the processing speed is high. This is advantageous in terms of, for example,

[0016]

FIG. 1 shows an embodiment of a sorting machine according to the present invention. This sorter includes a horizontally disposed disk 1 that is continuously rotated around a central axis 1a, a guide member 2 that is disposed close to and along a part of the outer periphery of the disk 1, and a work piece near the starting end of the guide member 2. Feeder 3 for feeding the workpiece toward the outer periphery of the disk 1, and sensors 4, 5,
6, defective work discharging device 7, and good work dropper 8
, Two shooters 9 _-1 and 9 _-2 , an operation control device (not shown), and the like.

The disk 1 is driven by a variable speed drive or a constant speed drive mechanism (not shown) using a motor as a power source, and rotates clockwise in FIG. On the outer periphery of the disk 1, notches 1b for receiving a shaft portion of a work are provided at a constant pitch.

The guide member 2 has an adjusting plate 2a for adjusting the position of the starting end face and adjusting the gap between the guide member 2 and the disk 1 on the starting end side.

The feeder 3 is a vibrating feeder and has a supply guide 3a for feeding works in a line. The supply guide 3 a is arranged on an extension of a line connecting the center of the disk 1 and the start end of the guide member 2, and has an outlet (front end) near the start end of the guide member 2. The supply guide 3a
As shown in FIG. 2, the head of the work W is received from below, the shaft is hung in the groove, and the work W aligned in this state is gradually moved toward the outlet. Although not shown in the drawing, the supply guide 3a is slightly lowered forward in order to smooth the movement.

After the work W is fed into the notch 1b of the disk 1, the head is supported by the disk 1 and the guide member 2. And in this state, it moves by the rotation of the disk 1,
A pass / fail inspection is performed by sensors 4, 5, and 6 in the middle of the guide member 2. The workpiece W is assumed to be a screw here, and therefore, the sensors 4, 5, and 6 combine three types of sensors for measuring the length of the screw, measuring the quality of plating, and measuring the quality of the thread. Although unnecessary sensors are used depending on the type of work, sensors for performing other inspections are added. These sensors are activated when the workpiece W reaches the inspection point.

The defective work discharge device 7 and the good work dropper 8 are provided at a position past the end of the guide member 2.
First discharge device 7 detected defective workpiece by the sensor 4, 5, 6 brushed off on the chute 9 _-1. Thereafter, non-defective work is in contact with the dropping device 8, is pushed out from the notch 1b falls onto the chute 9 _-2.

The above configuration is employed in a commercially available sorting machine and is not particularly new. That is, the feature of the present invention is that an auxiliary device 10 for feeding a work into such a sorter is provided.
In that it was added.

This auxiliary device 10, as shown in FIG.
A motor 11, a driving pulley 12 attached to an output shaft of the motor, and a supply guide 3a parallel to the pulley 12.
Driven pulley 13 provided at the outlet of the
And an endless belt 14 extending between the three endless belts. As shown in FIG. 4, the auxiliary device 10 includes a belt 14 hung on a driven pulley 13 and a work guide surface (guide portion 2) facing the belt 14.
The work W is sandwiched between the work W and the supply guide 3a or one of the guide surfaces of the supply guide 3a, and the work W is fed to the work W by rotation of the belt 14, and the work W in the front row is fed into the notch 1b of the disk 1.

The endless belt 14 is preferably flexible, elastic, and hard to slip for protecting the work and for surely applying the feeding force. In order to meet such demands, here, several belts made of synthetic rubber are used in combination, but the cross-sectional shape and the number of belts 14 used may be freely changed. Further, if the pulleys 12 and 13 are formed with shallow grooves on the surface, the effect of preventing the belt 14 from slipping is enhanced.

FIG. 5 shows another example of the auxiliary device 10. The auxiliary device 10 uses a roller 15 instead of the pulley 13 described above, and the roller 15 is directly rotated by the motor 11. As shown in the figure, when the roller 15 is directly connected to the motor 11, the auxiliary device 10 does not become complicated.
May be transmitted to the roller 15 via a belt or a gear.

The roller 15 is preferably a rubber roller or an elastic soft resin roller from the viewpoint of protecting the work and preventing slip. As described above, the object of the invention is achieved even when the workpiece is fed by the roller 15.

FIG. 6 shows the pulley 13 shown in FIGS.
2 shows an example of a position adjusting mechanism of the roller 15 of FIG. This mechanism constitutes a work clamping interval adjusting mechanism, and here, a pulley 13 is provided together with the motor 11.
An elongated bolt hole 17 is provided in a support block 16 which supports the roller 15 and the roller 15. The support block 16 is fixed by a bolt 18 passing through the bolt hole 17, and the flexibility generated between the bolt hole 17 and the bolt 18 is provided. By displacing the pulley 13 or the roller 15 together with the support block 16 in the range of, the work holding distance g (the distance between the work guide surface of the adjusting plate 2a at the opposing position) can be changed.

When the motor 11 cannot be supported by the support block 16, the position of the motor 11 is adjusted so as to absorb the fluctuation in the distance between the motor 11 and the pulley 13 or the roller 15.

As shown in FIG. 6, a device for moving the support block 16 to adjust the sandwiching interval is different from the support block 16 shown in FIG.
Functions as a part of the supply guide 3a, the head of the work is supported by the surface 16a shown in FIG.
6b.

In addition, the feeding force can be applied by bringing the belt 14 or the roller 15 into contact with the outer periphery of the head of the work, but the pulley 13 or the roller 15 is placed on the upper surface of the support block 16 as shown in FIG. When the belt 14 (or the roller 15) is stored in the recess 16a provided and brought into contact with the neck of the work W as shown in FIG.

An air nozzle 19 in FIG. 1 blows the work W in the supply guide 3a obliquely from behind. With this air nozzle, the supply of the work becomes smoother.

As described above, when the work is blown off,
It is desirable to provide a holding plate 20 shown in FIG. 2 above the supply guide 3a to prevent the work W from coming off the supply guide 3a.

FIG. 1 also shows the work feeding portion into the notch 1b.
A holding plate 21 shown in FIG. 8 may be provided. This holding plate 2
It is preferable to use a rotary opening / closing type that rotates about a shaft 21a with a lever as a fulcrum, because the feeding force applying unit for the work by the auxiliary device 10 can be opened by one-touch operation.

[0034]

As described above, in the sorting machine of the present invention, a device for applying a feeding force by a belt or a roller is used as an auxiliary device for feeding a work. The work is reliably and stably fed from the supply guide to the notch on the outer periphery of the disk.
Therefore, the reliability is higher than that of the air transfer type, and the operation rate of the machine is also increased by reducing the transfer mistake.

Further, the auxiliary device is very simple, and the air pressure source and the holding plate for preventing the work from jumping out become indispensable, so that the manufacturing cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of a sorting machine of the present invention.

FIG. 2 is a sectional view showing a state in which a work is supported by a supply guide.

FIG. 3 is an enlarged plan view of a work feeding auxiliary device provided in the sorting machine of FIG. 1;

FIG. 4 is a sectional view showing a state in which a feeding force is applied by an auxiliary device.

FIG. 5 is a plan view showing another example of the auxiliary device.

FIG. 6 is a plan view showing an example of a work holding interval adjusting mechanism.

FIG. 7 is a perspective view of a support block.

FIG. 8 is a view showing a holding plate provided at a work feeding portion in FIG.
Cross section along X-ray

[Explanation of symbols]

1 disc 1b notch 2 guide member 3 feeder 4,5,6 sensor 7 off device of the defective workpiece discharge device 8 non-defective workpiece 9 _-1, 9 _-2 chute 10 feeding auxiliary device 11 motor 12 driving pulley 13 driven pulley 14 endless belt 15 Roller 16 Support Block 17 Bolt Hole 18 Bolt 19 Air Nozzle 20, 21 Holding Plate

Claims (3)

[Claims] 1. A horizontally disposed disk that rotates continuously at a fixed position, a guide member disposed close to and along a part of the outer periphery of the disk, and a screw to be sorted near a starting end of the guide member.
A feeder that feeds a shaft body with a head such as a nail, a bolt, a rivet, a connecting pin, etc. into a notch provided at a constant pitch on the outer periphery of the disk, with a head fed into the notch from the supply guide. The shaft body is moved by rotating the disk with the head of the shaft body supported from below by the disk and the guide member, and a pass / fail inspection is performed during the movement, at a position where the end of the guide member is passed. In the sorting machine for removing defective products, at the outlet of the supply guide, an endless belt or a rotating roller which is rotated by a pulley and a work guide surface opposed thereto are sandwiched with a shaft with a head, and the shaft is attached to the shaft. A sorting machine for a shaft with a head, further comprising a feeding auxiliary device for applying a feeding force to the notch. 2. The machine according to claim 1, further comprising a clamping interval adjusting mechanism for displacing the pulley or the rotating roller to change an interval between the pulley or the rotating roller and a work guide surface at an opposing position. 3. The sorting machine for a shaft with a head according to claim 1, further comprising an air nozzle that blows the shaft with a head being supplied toward an auxiliary device installation portion in a longitudinal middle of the supply guide.