JPH0696308A - Quantitative counting device - Google Patents

Abstract

(57) [Abstract] [Purpose] The component supply devices are sequentially stopped so that the total number of components supplied from a plurality of component supply devices is gradually reduced, and after a predetermined time, the component supply devices are supplied. Restart and perform the quantitative counting work up to two times in parallel. [Structure] A plurality of component supply devices having different component supply amounts, and a component counting unit 6 for counting the number of components supplied from each component supply device are provided. The count value from each of the component counting units 6 is sent to the quantitative counting unit 4, and when the sum of the count values reaches the set value set stepwise, the supply of components from the component supply device is sequentially stopped, When the total sum of the count values reaches the set value, one quantitative counting is finished, and the component supply is restarted when a predetermined time passes after the component supply from the component supply device is stopped. [Effect] It is possible to perform quantitative counting twice in parallel, and to perform efficient quantitative counting work.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention continuously supplies a large number of stored parts such as screws and washers from a parts supply device so that the supply amount can reach a plurality of preset values set in stages. For example, the present invention relates to a quantitative counting device configured to sequentially and accurately reduce the supply amount of parts per unit time and finally count a desired number accurately and quickly.

[0002]

2. Description of the Related Art Conventionally, when a large number of stored parts such as screws and washers are packed in a predetermined number of boxes, the parts are once stored in a part supply device and the hopper located below the chute. The number of parts is counted during continuous supply to the product, and when it reaches the set value, the supply of parts is stopped, and the quantitative counting device configured to supply the parts in the hopper to the packaging box is used. There is.

[0003]

According to this quantitative counting device, a large number of parts can be quickly quantitatively counted and packed in a predetermined number of boxes, but just before the count value of the parts reaches the set value. If the amount of parts supplied per unit time is large, many parts may be supplied to the hopper and further to the packaging box after the count value of the parts reaches the set value and before the supply of parts is stopped. Therefore, the number of parts supplied to the packaging box exceeds the set value, leading to excessive supply of parts,
Depending on the supply amount of parts per unit time, this excessive supply amount becomes large, and there is a drawback that accurate quantitative counting cannot be performed. To eliminate this drawback, new quantitative counting devices have been developed. This quantitative counting device has a plurality of component supply devices having different component supply amounts per unit time, counts the number of components supplied from each component supply device, and sums the count values. As the set value set step by step is reached, the parts supply device that supplies more parts per unit time sequentially stops the parts supply to reduce the parts supply amount per unit time, and the specified number is reached. At times, the supply of components from all component supply devices is stopped.

In this quantitative counting device, since the supply amount of parts per unit time decreases immediately before reaching the predetermined number, it is counted that the predetermined number has been reached, and the supply of parts from the part supply device is stopped. However, the number of parts that are excessively supplied is small, and it is possible to accurately supply a predetermined number of parts. However, in this quantitative counting device, in order to gradually reduce the supply amount of parts per unit time, the supply of parts from the parts supply device is sequentially stopped. However, there is a problem that it takes a long time to complete the quantitative counting of all parts.

The present invention is intended to eliminate the above-mentioned drawbacks, and a plurality of component supply devices having different component supply amounts per unit time are arranged so that the total number of components supplied from each component supply device is When the set value set in steps is reached, the parts supply device is sequentially stopped to reduce the amount of parts supplied per unit time, and after a predetermined time, parts supply from the parts supply device is restarted to perform quantitative counting work. An object of the present invention is to provide a quantitative counting device that can perform quantitative counting work efficiently in parallel up to two times.

[0006]

A plurality of component supply devices are arranged, and each component supply device is provided with a component counting section for counting the components to be supplied. Also,
A hopper for dropping components is arranged corresponding to each component supply device, and each of the hoppers is provided with an opening / closing shutter that is always open.

The count value of the component counter is output to the quantitative counter having a set value set stepwise, and the quantitative counter is sequentially compared with the set value. The quantitative counting unit is configured to sequentially stop the supply of components from the component supply device and close the opening / closing shutter of the hopper corresponding to the component supply device when the total sum of the count values reaches a set value. . Further, the quantitative counting unit is configured to restart the component supply from the component supply device in which the component supply is stopped after a predetermined time to start the next quantitative count and to open all the opening / closing shutters when the quantitative count is completed. There is.

The quantitative counting unit supplies the component from the component supply device when the number of components in the next quantitative counting reaches the set value set stepwise before the previous quantitative counting is completed. It is configured to continue the suspension until the last quantitative counting is completed.

[0009]

In the above quantitative counting device, when a component is dropped from a plurality of component supply devices, the number of each component is counted by the component counting section. The count value of the component counting unit is sent to each quantitative counting unit, and the total sum thereof is sequentially compared with the set value set stepwise. When the sum of the count values reaches the set value, the supply of components from the component supply device is sequentially stopped, and the supply amount of the components per unit time decreases, and the opening / closing shutter of the hopper located below it closes. To be done. Therefore, the supply amount of parts per unit time is small immediately before the total sum of the count values reaches the desired number.
When the sum of the count values reaches the desired number, the component supply from this component supply device is stopped, and the opening / closing shutter of the hopper located below it is closed, and the components supplied from each component supply device are the hoppers. Is eliminated from below and one quantification is completed.

During this time, when the opening / closing shutter of the hopper is closed and a predetermined time elapses, the component supply from the component supply device is restarted, the next quantitative counting is started, and the quantitative counting is performed in parallel. Also, the open / close shutters are in a closed state, but these open / close shutters are opened as the previous quantitative counting is completed, and the parts held in the hopper pass through a predetermined hopper and are stored in the storage case. Quantitative counting is continued, and quantitative counting work can be performed efficiently.

Further, when the quantitative counting is not completed due to some trouble, if the number of the components supplied from the component supplying device which starts the next quantitative counting reaches the set value set stepwise, the parts are not supplied. However, at this time, even if a predetermined time has elapsed after the stop, the component supply device does not supply the component, and the component supply is stopped until the quantitative counting is completed. Therefore, the quantitative counting for two times is performed in parallel, but it is not performed any more in parallel. Therefore, while performing the quantitative counting for two times in parallel, there is no mixing of parts at each quantitative counting, and this is accurate. Can be done.

[0012]

Embodiments Embodiments will be described below with reference to the drawings. In FIGS. 1 and 2, reference numeral 1 denotes a quantitative counting device, which is a three-component supply device 2 provided with a storage hopper (not shown).
have. These component supply devices 2 have three kinds of high, medium, and low component 3 supply amounts per unit time, and are configured so that the components 3 are continuously supplied from the respective chutes 2a. Each chute 2a is provided with a stopper mechanism 2b which shuts off the flow of the component 3 when receiving a supply stop signal from the quantitative counting unit 4 described later. Further, below the chute 2a, a hopper 5 for temporarily storing the components 3 is provided, and the lower end of the hopper 5 is an opening / closing shutter 5a which is always open.
Is installed. The lower parts of these hoppers 5 are gathered in one place, and the parts 3 passing through these hoppers 5
Are collectively stored in a storage case 7 which is transferred to a packaging machine (not shown).

A parts counter 6 is provided which approaches each of the passages of the parts 3 falling from the short 2a, detects the passage of the parts 3 and counts the number thereof. The component counting unit 6 may be of any type as long as it detects passage of the component 3, but in the embodiment, the light source 6b is formed by using the CCD light receiving elements 6a extending in a line in the direction intersecting with the passage of the component 3. Is used to count the number of silhouettes of the component 3 imaged by the light projected onto the passage of the component 3 and output a detection signal of a number corresponding to the number.

The count value of the component counting unit 6 is output to the quantitative counting unit 4 which is a microcomputer constituting the control unit 1a of the quantitative counting device 1, and the sum of the count values of each component counting unit 6 is calculated. It is configured to be.
In addition, the quantitative counting unit 4 has a first setting unit 4a, a second setting unit 4b, and a desired number 3 which have a first setting value and a second setting value set so as to gradually approach the desired number. A stopper mechanism 2b attached to each of the third setting unit 4c for setting values and the component supply device 2 is connected, and when the total sum of the count values reaches each set value, the supply amount of the component 3 per unit time. When the sum of the count values reaches the third set value, that is, a predetermined number, the supply stop signal is sequentially output to the stopper mechanism 2b of the component supply device 2 that has a large number of parts. The supply stop signal is output to the stopper mechanism 2b.

The quantitative counting section 4 has the hopper 5
A storage case 7 in which a shutter drive section 5b for driving the opening / closing shutter 5a attached to each and a component 3 are stored.
Is removed and a new storage case 7 is placed, a quantitative counting completion detection unit 8 that outputs a quantitative counting completion signal is connected, and when the sum of the counted values reaches each set value, the parts supply is stopped. While closing the open / close shutters 5a of the hopper 5 located below the component supply device 2 described above, when the quantitative count completion signal is received, the shutter drive unit 5b is moved back to open all the open / close shutters 5a in the closed state. Is configured. Further, the quantitative counting unit 4 is configured to output a component supply signal to each component supply device 2 in which the stopper mechanism 2b is in an operating state and restart the component supply when a predetermined time has elapsed after the component supply is stopped. . further,
When the number of the components 3 supplied from the component supply device 2 during the next quantitative counting work reaches the set value by the time the previous quantitative counting is completed, the quantitative counting unit 4 stops the component supply and changes this state. It is configured to continue until the previous quantitative counting work is completed.

In the above-mentioned quantitative counting device, the three component supply devices 2 are operated to drop the components 3 from the respective chutes 2a, pass through the hoppers 5 therebelow, and store them in the storage case 7. The number of these components 3 is counted by the component counting unit 6, the count value is added by the quantitative counting unit 4, and the total sum is calculated. When the total sum of the count values reaches the first set value that is set stepwise, the stopper mechanism 2b of the component supply device 2 that supplies a large amount of the component 3 per unit time is activated, and the component supplied from the component supply device 2 is activated. Supply is stopped. Similarly,
When the total sum of the count values subsequently reaches the second set value, the component supply device 2 that supplies the second largest amount of the component 3 per unit time
The stopper mechanism 2b of 1 operates to stop the supply of the component 3 from the component supply device 2. Therefore, just before the total sum of the count values reaches a predetermined number, the component 3 is supplied only from the chute 2a of the component supply device 2 in which the supply amount of the component 3 per unit time is small, and the quantitative counting is continued. When the sum of the count values reaches a predetermined number, the shoot 2
The stopper mechanism 2b attached to a operates and the supply of components from the chute 2a is stopped. As a result, the number of the components 3 supplied to the storage case 7 through the inside of the hopper 5 becomes almost a predetermined number, and the excessive supply of the components 3 is prevented.

Further, as the supply of components from the chute 2a is stopped, the shutter drive section 5b of the opening / closing shutter 5a provided in the hopper 5 below the chute 2a is operated,
Although the open / close shutter 5a is closed, after a predetermined time has elapsed, a supply command signal is output to the stopper mechanism 2b, and the next quantitative counting operation is started in the closed state of the open / close shutter 5a.

Thereafter, the storage case 7 in which the parts 3 are stored
Is discharged, a new storage case 7 is arranged, one quantitative counting is completed, and the quantitative counting completion detecting section 8 outputs a quantitative counting completion signal. By this quantitative counting completion signal,
Immediately, all the shutter drive parts 5b return, the open / close shutters 5a attached to the hopper 5 are opened, the parts 3 held in the hopper 5 are sent to a new storage case 7, and the next quantitative counting work becomes smooth. Continued.

On the other hand, the component supply device 2 which has stopped the component supply due to the operation of the stopper mechanism 2b restarts the component supply after a predetermined time and starts the next quantitative counting work, but the previous quantitative counting is completed for some reason. If not, the total sum of the count values of the component 3 in the next quantitative counting operation may reach the set value set stepwise first. At this time,
Although the stopper mechanism 2b operates and the supply of the component 3 is stopped, even if a predetermined time elapses after the stop, the stopper mechanism 2b is stopped.
Keeps the operating state, does not start a new quantitative counting, can wait until the completion of the previous quantitative counting, can process the quantitative counting for each time in parallel, and these have been counted twice. There is no possibility that the parts 3 will be mixed.

[0020]

As described above, according to the present invention, a plurality of component supply devices having different component supply amounts per unit time are provided, the number of components supplied from each component supply device is counted, and the total is calculated. When the total sum of the numerical values reaches the set value set stepwise, the supply of the parts from the parts supply device is sequentially stopped, and when the total sum of the count values reaches the set value, one quantitative counting is finished, Since the component supply is restarted when a predetermined time elapses after the component supply from the component supply device is stopped, it is possible to perform quantitative counting twice in parallel in parallel. Can perform good quantitative counting work. Further, according to the present invention, while performing the quantitative counting for two times in parallel, the number of the components during the subsequent quantitative counting reaches the set value set stepwise and the component supply is stopped, and then a predetermined time elapses. However, since the component supply device is configured to continuously maintain the state in which the component supply is stopped, there is no need to newly start the quantitative counting, and the quantitative counting for two times is performed in parallel. Even though it is performed, it is possible to reliably perform the quantitative count for each time.

[Brief description of drawings]

FIG. 1 is a schematic block diagram of a control unit according to the present invention.

FIG. 2 is a schematic explanatory view of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Quantitative counting device 1a Control part 2 Parts supply device 2a Chute 2b Stopper mechanism 3 Parts 4 Quantitative counting part 4a 1st setting part 4b 2nd setting part 4c 3rd setting part 5 Hopper 5a Open / close shutter 5b Shutter drive part 6 Parts counting part 6a CCD light receiving element 6b Light source 7 Storage case 8 Quantitative counting completion detector

Claims (2)

[Claims] 1. A plurality of component supply devices are provided with a component counting unit for counting the components, and hoppers for dropping the components are arranged corresponding to the respective component supply devices, and the hoppers are opened and closed in a normally open state. While a shutter is provided, a quantitative counting unit for comparing the count value of each component counting unit with the set value set stepwise is provided, and this quantitative counting unit supplies components sequentially when the sum of the count values reaches the set value. The parts supply from the device is stopped, and the opening / closing shutter of the hopper corresponding to the parts supply device is closed. A quantitative counting device characterized in that the opening / closing shutters are all opened when the quantitative counting is completed while restarting later to start the next quantitative counting. 2. The quantitative counting unit supplies a component from a component supply device when the number of components in the next quantitative counting reaches a set value set stepwise before the previous quantitative counting is completed. The quantitative counting device according to claim 1, wherein the stop is continued until the previous quantitative counting is completed.