JPH09118422A - Parts aligning and separating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize the correct counting by surely separating parts which are continuously flowing downward in the middle of the down-flow with a simple constitution, and providing the prescribed clearance between the parts. SOLUTION: Two main rollers 1 are rotated and inclined in one direction, a supporting shaft part 2 of smaller diameter than that of the main rollers is formed on the inclined lower end side of the main roller 1, a cylindrical sub roller 20 whose circumferential surface is of the same diameter as the outer circumferential surface of the main rollers 1 is rotatably supported by the supporting shaft part 2, and the sub roller 20 is rotated in the same direction as the main rollers 1 at high peripheral speed. Even when parts continuously flow downward, the prescribed clearance can surely be provided between the parts in the middle of the down-flow, and the parts can be correctly counted by a non-contact type sensor unit. Sorting of the parts and counting of acceptable parts can be simultaneously performed by employing the constitution in a device to sort the acceptable parts from defective parts, and even when the shape and dimensions of a head part of the parts are changed, the device is suitable for small lot multi-production only by adjusting the clearance of rollers.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention arranges parts such as screws, bolts and rivets as heads and legs having a diameter smaller than the heads in a line with the heads on top and the legs hanging down. The present invention relates to an aligning / separating apparatus for components in which components that are continuously flowed down are aligned and flow down with a predetermined gap therebetween during the flow.

[0002]

2. Description of the Related Art Conventionally, in the case of counting a part having a head having a diameter larger than a leg diameter, the passing parts are currently counted by a non-contact type sensor unit. In such a machine, there is a device for selecting whether the head diameter is good or bad by two sorting rollers which are arranged so as to be spaced apart from each other at their lower ends and which rotate in opposite directions. Further, as the device for counting the parts, a pair of parallel aligning rollers are tilted and rotatably arranged so as to face each other, and the head is placed between the aligning rollers and the legs are hung. It is well known to use a parts aligning device for aligning the parts. This is a device for irradiating light from the light projecting side to the parts that are aligned and flowing down between the aligning rollers, and detecting the brightness of the light with a sensor unit on the light receiving side to count the number of parts. , Fig. 6
There is something like that shown in

This is a cross-sectional view showing the relationship between a pair of parallel aligning rollers 101 arranged opposite to each other and rotating in the direction of the arrow and being inclined, and the aligning roller 101.
The component 110 is made to flow between the aligning rollers 101, and a pair of sensor units 124 including a light emitting side and a light receiving side are arranged in a vertical direction with respect to the component 110 flowing down while the head 111 is supported between the aligning rollers 101. The light and darkness of light is sensed by utilizing the gaps between the circular parts 110 above.

Further, FIG. 7 shows that the sorting roller 101 has a screw,
Head 110 of parts 110 such as bolts and rivets is a good product,
A device that sorts out defective products and simultaneously counts only non-defective parts 110, and a feeder 106 supplies the parts 110 from a storage device (not shown). The tip of the feeder 106 reaches the upper end of the sorting roller 101, the pair of sorting rollers 101 facing each other is inclined, and the lower ends thereof gradually widen their mutual intervals. This interval is set so that the head portion 111 of the component 110 is within the allowable dimension range in the central portion, and the component 110 having a smaller head diameter than the allowable dimension can be dropped upward on both sides of the non-defective product determination unit. The defective product determination unit is disposed below the defective product determination unit at an interval in which the component 110 having a head diameter larger than the allowable size can be dropped. Then, a sensor unit 124 composed of a pair of a light emitting side and a light receiving side is arranged below the non-defective product determination unit where the component 110 having a good head diameter falls, and the falling component 110 blocks the light between the light and the dark. By sensing and counting the number of parts, the quality of the head 111 of the part 110 is determined, and at the same time, the number of good parts 110 of the head 111 is counted.

Further, in FIG. 8, the parts 110 aligned and supplied with the head 111 facing upward are irradiated with light, and the presence or absence of the reflected light of the irradiated light is integrated into a light emitting side and a light receiving side. The counting device is configured to count the number of the components 110 according to the lightness and darkness of the sensor unit 124.

[0006]

As described above, in the counting operation of the parts aligned head up, if the parts are continuously supplied, there is no gap between the connected parts. Nevertheless, the sensor unit cannot accurately count the parts during this aligned flow. Further, when a device for selecting parts according to the quality of the head is used and only the parts which are judged to be non-defective at the same time as this work are counted, that is, when the parts are dropped as shown in FIG. When counting the falling parts, it is possible if the falling parts are reliably separated, but when the legs are long or the amount of parts supplied increases, the parts that are adjacent to each other are connected. The sensor unit on the light receiving side cannot detect the brightness of the light because the light from the light projecting side remains blocked because it falls at the point where there is a problem that the number of parts actually exceeds the count value. .

Further, as shown in FIG. 8, when light is emitted from above the head and the reflected light is sensed by a sensor unit and counted, the head is a component such as a screw, bolt, rivet or the like. It is necessary to adjust the mounting position and sensitivity of this sensor unit every time the shape and size of the sensor changes, and if there is a recess such as a cross hole like a screw, the portion that irradiates light is very small. Therefore, it is difficult to set the irradiation position of this light, it is not possible to set it accurately, and it takes a long time to set up the counting device according to the parts.

A first object of the present invention is to provide a simple structure to reliably separate the parts that are continuously flowing down during the flow down, and to provide a predetermined gap between the parts so that a large number of parts can be automatically and accurately. The provision of an alignment separation device that enables counting,
A second object of the present invention is to provide a simple structure for making the peripheral speed of the outer peripheral surface of the auxiliary roller rotatably attached to the main roller higher than the peripheral speed of the main roller.

[0009]

SUMMARY OF THE INVENTION A first object of the present invention is to:
A support shaft portion 2 having a diameter smaller than the diameter of the main roller 1 is formed on the inclined lower end side of the main roller 1 which is inclined while rotating and tilting the two main rollers 1 in one direction. 1 rotatably supports a cylindrical sub roller 20 having the same outer peripheral surface as that of the main roller 1.
This is achieved by adopting a structure in which the peripheral speed is higher than that of the main roller 1 in the same direction.

A second object of the present invention is to employ a structure in which the auxiliary roller 2 is rotated by receiving power from a rotary drive source 23 through a drive rotor 22 that rotates in contact with the outer peripheral surface thereof. To be achieved.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. In FIGS. 1 and 2, reference numeral 1 denotes a pair of metal main rollers that are parallel to each other, and the main roller 1 has a tip inclined downward. The space between the parallel main rollers 1 has a head portion 11 such as a screw, a bolt, or a rivet, and is larger than the leg portion 12 of the headed component 10 including the leg portion 12 having a diameter smaller than the head portion 11. The intervals are set to be smaller than the part diameter, and the head portion 11 of the component 10 is supported by these main rollers 1 and the leg portions 12 are suspended. The main rollers 1 are rotatably supported by first bearing members 3 provided at both ends thereof so as to rotate in directions opposite to each other. This is a pulley fixed to the upper end of the main roller 1. The rotation is transmitted to each of the belts 4 via the belt 5. The main rollers 1 may be rotated by attaching a rotary drive source (not shown) such as a motor to each main roller 1. Also, these main rollers 1
A feeder 6 that supplies the component 10 from a storage device (not shown) that stores a large amount of the component 10 is extended at the upper end of the.

As shown in FIGS. 3 and 4, a support shaft portion 2 having a diameter smaller than the diameter of the outer peripheral surface is formed on the lower end side of the main roller 1 which is inclined from the middle thereof. The sub roller 20 having a cylindrical shape is rotatably supported by the bearing member 21. The outer peripheral surface of the sub roller 20 has the same diameter and the same peripheral surface as the outer peripheral surface of the main roller 1, and the pair of sub rollers 20 are rotated in the same direction as the main roller 1. The outer peripheral surface of the sub roller 20 is the same as the outer peripheral surface of the main roller 1, but the outer peripheral surface of the sub roller 20 may have a slightly smaller diameter than the outer peripheral surface of the main roller 1. .

Further, the sub-roller 20 has a driving rotary member 2 respectively.
2 are in contact with each other, and the drive rotor 22 is rotated at a higher peripheral speed than the main roller 1 via a rotary drive source 23 such as a motor arranged along the main roller 1. In this embodiment, the auxiliary roller 20 is used as the driving rotary member 2.
Although the contact roller 2 is rotated in contact with the auxiliary roller 20, the auxiliary roller 20 may be rotated by incorporating the rotary drive source 23 in the main roller 1 instead, and the lower end of the auxiliary roller 20 is belted to rotate. It may be configured to allow it.

In such a structure, when the component 10 is supplied to the pair of parallel main rollers 1 which are inclined in one direction in advance and are rotating in the directions opposite to each other, the component 10 is supplied.
The head 11 is supported and flows between the parallel main rollers 1 with the head 11 upward and the legs 12 hanging down. At this time, when the mutual parts 10 flow down with a predetermined gap, there is no influence on the counting work, but when the mutual parts 10 flow down in series, counting becomes impossible. Therefore, the sub-roller 20 rotatably supported by the support shaft portion 2 of the main roller 1 is rotated by the rotary drive source 23 via the drive rotor 22. At this time, since the peripheral speed of the outer peripheral surface of the sub roller 20 is higher than the peripheral speed of the main roller 1,
The component 10 that has reached this position has a faster flow-down speed, and the component 10 is separated from the subsequent component 10, and a predetermined gap is obtained. This separates the parts from each other and ensures counting of the parts 10 in a sensor unit (not shown).

[0015]

EXAMPLE An application example of the present invention will be described below. In FIG. 5, the parallel main roller 1 and sub roller 20 are
It shows an embodiment when it is used in a sorting machine for sorting defective products, and the lower ends of the pair of inclined main rollers 1 gradually expand as they are separated from each other. In addition, the main roller 1 is provided with a non-defective item determination section A for determining a head diameter within a permissible range of a predetermined dimension as a non-defective item. This non-defective part A
A defective product determination unit B that determines a head diameter outside a permissible range of a predetermined dimension as defective is set on both sides of the non-defective product determination unit A.
The boundaries between the small diameter side and the large diameter side of the dimensional allowable range of the head diameter are set within the acceptable product range only slightly. As a result, the component 10 at the boundary between the good product and the defective product is excluded as a defective product, and the component 10 having a good head diameter can be accurately obtained.

Further, a sub-roller 20 is arranged at a position from the near side of the non-defective item judging section A to the lower end of the inclination, and a predetermined gap is provided between the parts 10 continuously flowing down between the main rollers 1 at this position. Since it is opened, since the parts 10 falling from the non-defective part determination section A are reliably separated from each other, it is possible to count the good parts 10 of the head 11 by the sensor unit (not shown). .

[0017]

As is apparent from the embodiments described above, according to the present invention, the auxiliary rollers 20 having the same diameter as the outer peripheral surface of the main rollers 1 are supported on the inclined lower ends of the two main rollers 1 so that they can rotate at high speed. Therefore, even if the parts flow continuously, a predetermined gap can be surely provided between the parts on the way,
It is possible to accurately count the number of parts in the non-contact type sensor unit. In addition, by using this configuration in a device that sorts good and bad parts, it is possible to sort parts and count good parts at the same time. Furthermore, the head shape and dimensions of parts such as screws, bolts, rivets, etc. Even if is changed, it is only necessary to adjust the interval between the main rollers each time, so it is suitable for low-volume production. Moreover, since the independent rotary drive sources are arranged on the sub rollers, respectively, the peripheral speed becomes variable,
A unique effect is obtained such that the gap between the parts can be freely adjusted.

[Brief description of the drawings]

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

FIG. 2 is a front view of FIG.

FIG. 3 is an enlarged cross-sectional plan view of a main part of FIG.

FIG. 4 is a sectional view taken along line AA of FIG. 3;

FIG. 5 is a plan view of a sorting machine as an application example of the present invention.

FIG. 6 is a cross-sectional view showing a conventional example of the present invention.

FIG. 7 is a front view showing another conventional example.

FIG. 8 is a cross-sectional view of an essential part showing another example of the related art.

[Explanation of symbols]

 1 Main Roller 2 Support Shaft Part 3 First Bearing Member 4 Pulley 5 Belt 6 Feeder 10 Parts 11 Head Part 12 Leg Part 20 Secondary Roller 21 Second Bearing Member 22 Drive Rotating Body 23 Rotational Drive Source A Good Product Judgment Part B No Non-defective part

Claims (2)

[Claims] 1. A support shaft portion 2 having a diameter smaller than the diameter of the main roller 1 is formed on the tilted lower end side of the main roller 1 which rotates and tilts the two main rollers 1 in one direction. A cylindrical sub-roller 20 having the same diameter as the outer peripheral surface of the main roller 1 is rotatably supported on the shaft portion 2, and the main roller 1 is rotatably supported on the sub-roller 20 in the same direction as the main roller 1.
An apparatus for aligning and separating parts, wherein the peripheral speed provides rotation at a higher speed. 2. The sub-roller is configured to be rotated by receiving power from a rotary drive source 23 via a drive rotor 22 that rotates in contact with an outer peripheral surface of the sub-roller. Alignment and separation device for parts.