JP2660329B2 - Parts counting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a part comprising a head such as a metal screw, bolt and rivet and a leg having a smaller diameter than the head, with the head suspended upward and the leg suspended. The present invention relates to a counting device that counts components by turning them on and off, detecting the passage of these components, and turning on and off electrical signals.

[0002]

2. Description of the Related Art Conventionally, as a device for aligning and supplying a part having a head having a diameter larger than the diameter of a leg, a pair of parallel rollers are inclined and rotatably arranged opposite to each other, and a head is provided between the rollers. 2. Description of the Related Art There is a well-known component aligning apparatus that aligns components with a portion thereof up and a leg suspended. A device has been proposed in which the components arranged in this way are irradiated with light from the light emitting side, and the brightness of the light is sensed by a sensor unit on the light receiving side to count the number of components.
For example, there is a device as shown in FIG.

[0003] This is a pair of parallel rollers 101 and 102 which are opposed to each other and are inclined and arranged to rotate in the direction of an arrow.
FIG. 3 is a cross-sectional view showing the relationship between
1 and 102, and the part 110
A pair of sensor units 120 each including a light-emitting side and a light-receiving side are arranged in the vertical direction with respect to the component 110 flowing down while the head 111 is supported between the first and the second components 102. The light and dark of light are sensed by utilizing the gap between each other.

FIG. 8 shows the arrangement rollers 101 and 1.
02, parts 110 such as screws, bolts, rivets, etc.
The head 111 is selected as a non-defective product and a non-defective product, and only a non-defective product of the component 110 is counted at the same time. A feeder 107 supplies the component from a storage device (not shown). is there. The tip of the feeder 107 reaches the upper ends of the pair of rollers 101 and 102,
The pair of rollers 101 and 102 facing each other are inclined, and the lower ends thereof are gradually widened. This distance is set at the center of the head 11 of the part 110.
1 is set so as to fall within the range of the allowable dimension. On both sides of the central portion, a defective product judging section having an interval at which a part having a head diameter smaller than the allowable dimension can be dropped is provided at an upper portion, and the above-described defective portion is provided at a lower portion. Defective product judging sections are provided at intervals at which components having a head diameter larger than the allowable dimension can fall. A sensor unit 120 composed of a pair of light projecting side and light receiving side is disposed below the non-defective part in the center where the component having a good head diameter falls. By sensing at 120 and counting the number, the part 110
The number of good parts 110 of the head 111 is counted at the same time as whether the head 111 is good or bad.

Further, FIG. 9 shows a case in which light is radiated to the component 110 which is aligned and supplied with the head 111 facing upward, and the presence or absence of reflected light of the radiated light is determined integrally by the light projecting and light receiving sides. 1 shows a counting device that counts the number of components 110 based on the brightness of the sensor unit 120 by sensing with the sensor unit 120 of FIG.

[0006]

There have been proposed various devices for automatically counting the number of components as described above. However, in these real-world tasks,
Various problems have arisen. For example, in the counting operation of parts that are aligned and flow down while the heads are supported between the rollers by tilting the pair of parallel rollers, if this part is always inclined in one direction of the pair of rollers, There is no problem, but the sensor unit senses the brightness of the light because the legs of all parts do not tilt in one direction, tilt in the opposite direction, or the legs overlap each other. Cannot be performed, and accurate counting of parts cannot be performed.

When counting the number of screws with a sensor unit as shown in FIG. 8, it is possible to count the number of falling parts if the falling parts are surely separated. However, when the supply amount of components increases, the components adjacent to each other fall in a continuous state, so that the light from the light emitting side remains blocked, and the sensor unit on the light receiving side emits light. Cannot be sensed, and the number of components actually becomes larger than the counted number. Further, as shown in FIG. 9, when light is irradiated from above the head and the reflected light is detected by the sensor unit and counting is performed, the head may be a screw, a bolt,
Each time the shape and dimensions of parts, such as rivets, change, the mounting position and sensitivity of this sensor unit must be adjusted, and if there is a dent such as a cross hole, the part that irradiates light is limited. It is difficult to set the irradiation position of this light because it is a very small part, it is not possible to set it accurately, it takes a long time to set up the counting device according to the parts, it is not suitable for large-scale small-quantity production, etc. Challenges have arisen.

A first object of the present invention is to provide a counting device for accurately counting a large number of parts with a simple configuration, and a second object of the present invention is to provide a good and defective part of a head. The present invention is to provide a counting device which automatically and easily counts only parts having good heads at the same time as mechanically sorting out.

[0009]

SUMMARY OF THE INVENTION A first object of the present invention is to:
The two metal rollers 1 and 2 are arranged rotating and inclined in one direction, and the part 10 is aligned between the pair of rollers 1 and 2 with the head 11 up and the legs 12 hanging down. In addition, an annular conductor 20 is fitted around the outer periphery of one of the rollers 1 via an insulator 21, an electric signal is supplied to the conductor 20, and the component is arranged to flow down between the inclined rollers 1 and 2. This is achieved by counting the passing parts 10 by turning on and off the electric signal to the other roller 2 via 10.

A second object of the present invention is to arrange two metal rollers 1 and 2 so as to rotate and incline in one direction, and arrange such that the lower ends of the inclined rollers 1 and 2 are separated from each other. In addition, a non-defective product judging section A for judging a head diameter within a permissible range of a predetermined size to be a non-defective product is set on the pair of rollers 1 and 2, and a head diameter outside the permissible range of a predetermined size is set on both sides of the non-defective product judging portion A A defective product determination unit B for determining a defect is set, and the parts 10 are aligned with the head 11 up and the legs 12 hanging down between the rollers 1 and 2. A and a head 11 are fitted with a ring-shaped conductor 20 around an outer periphery of a defective product judging section B having a large diameter via an insulator 21 to supply an electric signal to the conductor 20 and to rotate the roller 1 inclined and rotated. Electrical signal to the other roller 2 via the part 10 Is counted, and the number of passing parts 10 is counted, and the number of the parts 10 passing through the non-defective part determining section B is subtracted from the number of the parts 10 passing through the defective part determining section B having a large head diameter, and only the non-defective parts are counted. Achieved.

[0011]

For this purpose, a part 10 having a head 11 is made to flow down while the legs 12 hang down between the rollers 1 and 2 which are inclined and are rotating in the directions facing each other. As a result, the head 11 flows downward while being in contact with it while being suspended by the parallel rollers 1 and 2.
When the roller 1 contacts the electric conductor 20 of one roller 1, the electric signal supplied to the electric conductor 20 flows to the other roller 2 via the component 10, and the electric signal is conducted. Is done. Since the electrical signal is instantaneously conducted to the rollers 1 and 2 when the component 10 passes, no electrical signal is supplied since the component is not connected even if the gap between the components reaches this position. When the next component 10 passes, an electric signal is input, and the count is continuously performed.

A component 1 having a head 11 at the center is arranged such that the rollers 1 and 2 are parallel to each other and are spaced apart from each other as the rollers 1 and 2 are inclined downward.
By setting a non-defective part A in which only non-defective parts 0 drop, and providing a defective part B with a small diameter and a large diameter of the head 11 on both sides of the non-defective part A, the small-diameter part 10 of the head 11 It falls before reaching non-defective judgment part A. On the other hand, head 11
The good part 10 and the large-diameter defective part 10 of the head 11 pass through the conductor 20 of the good part judging part A, and these parts 10 are all counted. In addition, in the non-defective part A, the part 10 having a good head diameter falls at this part, and the defective part 10 having a large head diameter passes through the conductor 20 of the next defective part determination part B. The large defective parts 10 in the part 11 are counted. Then, by subtracting the count value of the defective product determination unit B from the count value of the non-defective product determination unit A, true non-defective products are counted, so that selection of non-defective products and defective products of the component 10 and counting of non-defective products can be performed simultaneously. .

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. 1 and 2, reference numerals 1 and 2 denote a pair of metal rollers parallel to each other.
Has a tip inclined downward. These parallel rollers 1, 2
The interval between the heads 11 such as screws, bolts or rivets
A headed part 10 comprising a leg 12 having a smaller diameter than the head 11 is set at an interval larger than the leg 12 and smaller than the head diameter. The legs 12 are suspended from the rollers 1 and 2. The rollers 1 and 2 are rotatably supported via bearing members 4 provided at both ends so as to rotate in directions opposite to each other, and are provided with pulleys 5 fixed to the upper ends of the rollers 1 and 2. Are transmitted through the belt 6 respectively. Further, a storage device (not shown) for storing a large amount of the component 10 at the upper ends of the rollers 1 and 2.
A feeder 7 for supplying a component 10 from the hopper extends.

At the lower end of one of these rollers 1 and 2, along the outer periphery of the roller 1, as shown in FIGS.
An annular conductor 20 is fitted into the annular groove 3 of the roller 1 via an insulator 21. The conductor 20 and the insulator 2
The outer peripheral surface of the roller 1 is the same as the outer peripheral surface of the roller 1. It is sufficient that the width of the conductor 20 is large enough for the head 11 of the component 10 to be in contact therewith.
Is a width that does not directly touch the conductor 20.
The conductor 20 is provided with a connecting member 22 which can be constantly contacted when the conductor 20 is rotated. The connecting member 22 supplies an electric signal and counts the number of components 10 passing through this position (not shown). )It is connected to the.

Further, the other roller 2 has one roller 1
Is grounded via a bearing 4 so that the electric signal flows when the electric signal is supplied to the other roller 2 via the component 10. In this embodiment, the bearing is grounded, but may be a metal frame of the machine.

For this reason, a pair of parallel rollers 1, which have previously been inclined to one side and rotated in the direction facing each other,
2 is supplied with the part 10, the part 10 hangs on the head 11 and the legs 12, and the parallel rollers 1,
The head 11 is supported between the two and flows down in an aligned manner. While flowing downward between the rollers 1 and 2, the head 11
Since the electric signal is supplied to the conductor 20, the electric signal supplied to the conductor 20 is supplied to the other roller 2 via the component 10. At this time, an electric signal is input, and the conductor 20 is connected to the component 1.
When 0 passes, the electrical signal is cut off and the component 10 is counted. Since this part 10 is instantaneously connected to the rollers 1 and 2 when passing, this part 10
No electrical signal is supplied because the gap between this and the subsequent component 10 reaches this position, so that no electrical signal is supplied, and an electrical signal is input when the next component 10 passes, and the component 10 is counted continuously. Subsequently, when the next component 10 reaches this position, a signal is input again and counted. By repeating this operation, the number of components 10 is counted sequentially.

FIG. 5 and FIG. 6 show an embodiment in which the above-mentioned parallel aligning rollers 1 and 2 are used in a sorting machine for sorting non-defective and defective parts 10 instead of the rollers 10. The lower ends of the pair of inclined rollers 1 and 2 gradually widen so as to be apart from each other. In addition, a non-defective part A for determining the head diameter within a permissible range of a predetermined dimension as non-defective is set in the middle of these rollers 1 and 2. On both sides of the non-defective product determination section A, a defective product determination section B for determining a head diameter outside the allowable range of a predetermined dimension as defective is set, and a small diameter of the non-defective product determination section A in the allowable dimension of the head diameter is set. The boundary between the side and the large diameter side is set slightly within the acceptable range. As a result, the component 10 at the boundary between a good product and a defective product is excluded as a defective product, and a component having a good head diameter can be accurately obtained.

Further, an annular conductor 20 is fitted over the non-defective product judging portion A of one of the rollers 1 via an insulator 21 on the outer periphery thereof. Similarly, a connecting member 22 connected to an arithmetic unit (not shown) is arranged so as to always contact. The annular conductor 20 is also fitted to one of the rollers 1 via the insulator 21 in the defective product determination section B in which the head 11 is larger than the allowable dimension in the same manner as described above. Large-diameter defective products are counted. This conductor 20
The connection member 22 is always in contact with the
Reference numeral 2 denotes a true non-defective product which is connected to the arithmetic unit and subtracts the count value of the component 10 passing through the defective product judgment unit B having a large head diameter from the count value of the component 10 passing through the non-defective product judgment unit A. Is obtained.

FIG. 6 shows another embodiment of the sorting machine. In the rollers 1 and 2, a defective product judging section B for judging a defective article having a large head diameter is replaced with a thick sheet of a non-defective article judging section A. It has a stepped shape that is thinner. In the same manner as in the previous embodiment, one of the stepped rollers 1 and 2 has a non-defective part A and a defective part B for determining a defective part having a large head diameter. Annular conductors 20 are inserted through the respective 21. A connection member 22 connected to an arithmetic unit (not shown) is disposed on the conductor 20 so as to be always in contact therewith.
Is subtracted from the count value of the component 10 that has passed through the defective product determination unit B having a large head diameter to count true non-defective products.

Accordingly, when the component 10 is supplied from the storage device between the rollers 1 and 2 via the feeder 7,
The part 10 is arranged and flows downward along the rollers 1 and 2 while being suspended by the head 11 between the rollers 1 and 2. At this time, defective products with a small head diameter are
The part 10 falling within the allowable range and the part having a larger head diameter are supported by the rollers 1 and 2 and flow downward. In this operation, since these components 10 pass through the conductor 20 of the non-defective part A,
The electrical connection between the rollers 1 and 2 is made via the component 10 so that the electric signal flows intermittently, and the number of components 10 passing through is counted. In this non-defective part A, the good part 10 of the head 11 falls from the position between the rollers 1 and 2 at this position, and the non-defective part 10 is discharged as the part 10 within the allowable range of the head diameter.

On the other hand, the head 1 that passes through
The component 10 having the larger dimension 1 flows down further and reaches the conductor 20 of the next defective part determination unit B. And this part 1
An electric signal flows from the conductor 20 to 0, and the components 10 having the large head 11 are counted. In this way, by subtracting the count value of the defective product determination unit B from the count value of the component 10 counted by the good product determination unit A, the number of components 10 determined to be non-defective is obtained. By subtracting the count value of the defective product determination unit B from the count value of the non-defective product determination unit A between the count values counted at the two locations of the non-defective product determination unit A and the defective product determination unit B, a true non-defective product is obtained. Is counted, and the selection of non-defective products and defective products of the component 10 and the counting of non-defective products can be performed at the same time.

[0022]

As is apparent from the above-described embodiments, the present invention is characterized in that two metal rollers 1, 2 are arranged so as to rotate and be inclined in one direction, and between the pair of rollers 1, 2. The components 10 are aligned with the head 11 up and the legs 12 hanging down, and an annular conductor 20 is fitted around the outer periphery of one of the rollers 1 via an insulator 21. Is a part counting device that counts passing parts 10 by turning on and off an electric signal to the other roller 2 through a part 10 that flows down and aligns between the rollers 1 and 2 that are inclined and rotated. In the counting work of components that are aligned and flow down while the parallel rollers are inclined and the head is supported between the rollers, it is not necessary to always keep the inclination direction of the components constant. Even if they overlap each other You can count the exact parts. Also, in this counting device, the components flow down on the rollers supported by the head, and at the time of the flow, an electric signal is supplied from the conductor to the other roller via the components, so that the components flowing down are reliably separated. If not, accurate counting is possible even if the legs are long. Furthermore, even if the shape and dimensions of the component are changed, such as screws, bolts, rivets, etc., the adjustment of the mounting position and sensitivity of the sensor unit is not necessary as in the past, and Since the setup time for adjusting the counting device becomes longer and only the roller spacing is adjusted,
It is also suitable for various kinds of small-lot production.

Further, by using the present invention in a sorting machine using rollers for sorting the head of a part into a non-defective product or a non-defective product, it is possible to count the components determined to be non-defective in the sorting operation simultaneously with the sorting operation. Therefore, unique effects can be obtained, such as miniaturization of the entire machine and provision of an inexpensive counting and sorting machine.

[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 sectional view of a main part of FIG.

FIG. 4 is an enlarged partial sectional view of a main part showing a combination state of a roller and a conductor.

FIG. 5 is a plan view of a sorting machine as another embodiment of the present invention.

FIG. 6 is a plan view of a sorter as another embodiment of the present invention.

FIG. 7 is a sectional view showing a conventional example of the present invention.

FIG. 8 is a front view showing another conventional example.

FIG. 9 is a sectional view of a main part showing another conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Roller 2 Roller 3 Annular groove 4 Bearing member 5 Pulley 6 Belt 7 Feeder 10 Parts 11 Head 12 Legs 20 Conductor 21 Insulator 22 Connection member A Good part judgment part B Defective part judgment part

Claims (2)

(57) [Claims] 1. Two metal rollers 1 and 2 are arranged to rotate and incline in one direction, with a head 11 up and a leg 12 hanging between the pair of rollers 1 and 2. The parts 10 are aligned, and an insulator 21
The annular conductor 20 is fitted through the
The roller 1, which is inclined and rotates,
A component counting device which counts passing components by turning on and off an electric signal to the other roller 2 via a component 10 which is arranged to flow down between the two components. 2. The two metallic rollers 1, 2 are arranged so as to rotate and incline in one direction, and are arranged such that the lower ends of the inclined rollers 1, 2 are separated from each other. A non-defective product which sets a non-permissible head diameter outside a predetermined dimension on both sides of the non-defective product determination unit A is set to 2 in a non-defective product determination unit A for determining a head diameter within a predetermined size allowable range as non-defective. The determination unit B is set, and the parts 10 are aligned with the head 11 up and the legs 12 hanging down between the rollers 1 and 2. An annular conductor 20 is fitted around each outer periphery of the large-diameter defective product determination section B via an insulator 21, an electric signal is supplied to the conductor 20, and an alignment flow is performed between the rollers 1 and 2 that are inclined and rotated. The electric signal to the other roller 2 through the part 10 A part characterized by counting excess parts 10 and subtracting parts 10 passing a defective part determination section B having a large head diameter from the number of parts 10 passing a non-defective part A to count only good parts. Counting device.