JP2975799B2 - Article supply control method in sorting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a supply conveyor attached to the side of a main conveyor, which is constituted by connecting a number of breads for sorting articles while conveying the articles, to the main conveyor, and the timing of transferring the articles to the main conveyor pans. The present invention relates to a method for controlling the supply of articles in a sorting machine adapted to be supplied together.

[0002]

2. Description of the Related Art When an article is to be supplied to a pan of a main conveyor to be driven by a supply conveyor provided sideways,
The articles are made to wait at a predetermined position on the supply conveyor, and the articles are supplied from the supply conveyor to the pan of the main conveyor by driving the supply conveyor in accordance with the position and speed of the pan of the main conveyor.

[0003]

By the way, according to the method of waiting this article at a predetermined position on the supply conveyor,
Although it is possible to accurately supply articles from the supply conveyor to the bread of the main conveyor in a timely manner, the sorting capacity is usually about 30 to 45 pieces / minute, and a higher sorting capacity is required by the mechanism. Above, it was impossible.

According to the present invention, articles are supplied to the pans of the main conveyor in a timely manner from a supply conveyor attached to the side of a main conveyor formed by connecting a number of breads for sorting articles while conveying the articles. In the supply control method of the article in the sorter as described above, by providing the article without waiting at a predetermined position of the supply conveyor,
An object of the present invention is to provide a method for controlling the supply of articles in a sorter that can supply articles from a supply conveyor to a pan of a main conveyor at a precise timing with high accuracy.

[0005]

In order to achieve the above-mentioned object, a method for controlling the supply of articles in a sorting machine according to the present invention is directed to a method of controlling a main conveyor comprising a plurality of pans connected to each other for sorting articles while transporting the articles. In the supply control method of the articles in the sorter that is configured to supply the articles to the pan of the main conveyor at the same timing from the supply conveyors provided sideways, the supply conveyor is divided into a plurality of articles in the article transfer direction. And a configuration in which each supply conveyor is independently driven by a servomotor, a timing of feeding of the articles sent to the first supply conveyor constituting the supply conveyor, and a main conveyor to which the articles are supplied. The shift of the pan timing is detected, and according to the detected shift amount, a predetermined acceleration consisting of the same acceleration with the acceleration start time shifted. One of the number of speed patterns is selected, the first supply conveyor is driven by the speed pattern, and the articles are transferred toward the second supply conveyor, and the second supply conveyor is accelerated according to the speed pattern. In the state in which the second supply conveyor is accelerated or decelerated from the final speed of the speed pattern to the average speed of the final speed of each speed pattern, the deviation from the pan timing of the main conveyor is eliminated. , And to the third supply conveyor.

[0006]

According to the method for controlling the supply of articles in the sorting machine, the timing of feeding the articles sent to the first supply conveyor constituting the supply conveyor divided into a plurality of parts in the transport direction of the articles, The shift of the pan timing of the main conveyor to be performed is detected, and one of a plurality of predetermined speed patterns having the same acceleration with the acceleration start time shifted is selected according to the detected shift amount. Drives the first supply conveyor to transfer the articles toward the second supply conveyor, and then moves the second supply conveyor, into which the articles have been sent, from the final speed of this speed pattern to the final speed of each speed pattern. The article is sent out to the succeeding third supply conveyor in a state where there is no deviation from the pan timing of the main conveyor by performing acceleration / deceleration drive to the average speed of It can be.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A method for controlling the supply of articles in a sorting machine according to the present invention will be described below with reference to the illustrated embodiment. In the figure, reference numeral 1 denotes a main conveyor for sorting articles while transporting the articles G,
The main conveyor 1 is configured such that a number of pans are arranged adjacent to each other, connected to each other, and driven to circulate at a predetermined speed.

On the side of the main conveyor 1, a supply conveyor 2 as an article supply device for supplying the articles G to the bread of the main conveyor 1 is provided. This supply conveyor 2
Is composed of a belt conveyor or a roller conveyor, and the supply conveyor 2 is divided into a plurality of parts in the transfer direction of the articles G (in this embodiment, the introduction conveyor 2
0, a first supply conveyor 21, a second supply conveyor 22, a third supply conveyor 23, and a fourth supply conveyor 24. ), The supply conveyors 21, 22, 23, 24 are connected to the servomotors 21M,
It is configured to be driven independently by 22M, 23M and 24M.

Among them, the fourth supply conveyor 24 on the main conveyor 1 side includes a plurality of narrow belt-shaped belt conveyors 24a,
24b and 24c.

By setting the driving speeds of the belt-like belt conveyors 24a, 24b, 24c of the fourth supply conveyor 24 to be different from each other, the article G
Can be supplied to the bread of the main conveyor 1 by changing its direction.

Each of the supply conveyors 21, 22, 23,
24 is a servo motor 21M, 22M, 23M, 24M
, Which are independently driven by each other. Among them, the timing of sending the articles sent from the introduction conveyor 20 to the first supply conveyor 21 is detected by the sensor S1 installed at the position of the first supply conveyor 21. And
A difference between the timing of the feeding and the timing of the pan of the main conveyor 1 to which the article G is supplied is detected, and according to the detected amount of deviation, as shown in FIG. One of a plurality of predetermined speed patterns v1, v2,..., vn consisting of α is selected, and the first feed conveyor 21 is set to the initial feeding speed va by the speed patterns v1, v2,. , The article G is transported toward the second supply conveyor 22 while being accelerated, and the article G is accelerated according to the speed patterns v1, v2,..., Vn and sent to the second supply conveyor 22. And the second supply conveyor 22 to the speed patterns v1, v
From the final speed of 2,..., Vn, each speed pattern v1,
The average speed vb ((v1-v) of the final speeds of v2,.
The main conveyor 1 is driven to accelerate and decelerate in n) / 2) to send the main conveyor 1 to the third supply conveyor 23 in a state where there is no deviation from the pan timing.

In this case, points A and B shown in FIG.
Speed pattern v1 passing through point 1, point C1, point D and point E
And a speed pattern vn passing through points A, B2, C2, D and E (in the present embodiment, the speed pattern vn is
Set not to accelerate (= va). ) Means goods G
The time required for the main conveyor 1 to circulate at a predetermined speed during the time required for the main conveyor 1 to move from the point A to the point E is the time required for one pan to pass through the fixed position (hereinafter referred to as “pan passing time”). ) Is T, T × ((n−1) / n)
(A time difference between the articles G
Between the feeding timing of the main conveyor 1 and the pan timing of the main conveyor 1 to which the article G is supplied. ), And the speed pattern v2,
v3,..., vn-1 are determined.

In this embodiment, n = 16, and the difference (1 pulse) between the acceleration start times of the speed patterns v1, v2,..., Vn is defined as T (pan passing time) / 1.
6 and the feeding timing of the article G detected by the sensor S1 installed at the position of the first supply conveyor 21, and the pan of the main conveyor 1 to which the article G detected by a sensor (not shown) such as a photoelectric tube is supplied. , Vn in which the acceleration start time is shifted by one pulse at a time according to the timing shift (pulse shift calculated by the pulse counter) (there is no shift). In this case, the speed pattern v1 is selected, and the speed patterns v2, v3,... In which the acceleration start time is delayed by one pulse each time one pulse is shifted are selected.).

In this embodiment, the sensor S1 installed at the position of the first supply conveyor 21 is connected to the article G when the transfer is performed according to the speed pattern v1 (when there is no shift) so that the apparatus can be easily adjusted. Is detected, after passing an integral multiple of the bread passage time, for example, three times the bread passage time, the speed pattern v is set so as to pass through the sensor S2 installed at the position of the third supply conveyor 23.
1. The position of the sensor S2 is set.

In this manner, the articles G can be sent from the second supply conveyor 22 to the third supply conveyor 23 without any deviation from the pan timing of the main conveyor 1, and the second supply conveyor 22 can further send out the articles G. The sensor S2 installed at the position of the third supply conveyor 23 and the sensor S3 installed at the position of the fourth supply conveyor 24 detect a timing deviation from the pan of the main conveyor 1 and, if necessary, the third supply conveyor 23. And finely adjusting the driving speed of the fourth supply conveyor 24 so that the deviation from the pan timing of the main conveyor 1 is eliminated.
Is supplied to the bread of the main conveyor 1.

[0016]

According to the method for controlling the supply of articles in the sorting machine according to the present invention, the timing for feeding the articles sent to the first supply conveyor constituting the supply conveyor divided into a plurality of parts in the article transfer direction. And the shift of the pan timing of the main conveyor to which the article is supplied is detected, and according to the detected shift amount, one of a plurality of predetermined speed patterns including the same acceleration with the acceleration start time shifted. Selected and drives the first supply conveyor according to this speed pattern to transfer the articles towards the second supply conveyor, and then moves the second supply conveyor into which the articles have been fed from the final speed of this speed pattern, By accelerating and decelerating to the average speed of the final speed of each speed pattern, the articles can be moved in the following third supply conveyor in a state where the shift from the pan timing of the main conveyor is eliminated. It can be made to send to. In this way, one of a plurality of predetermined speed patterns having the same acceleration with the acceleration start time shifted is selected to drive the supply conveyor, and the acceleration / deceleration drive is performed to the average speed of the final speed of each speed pattern. By feeding the articles to the subsequent supply conveyor, the articles are kept in a predetermined position on the supply conveyor without delaying the articles to the main conveyor pan from the supply conveyor in a precise and accurate manner. Can be supplied by ability.

[Brief description of the drawings]

FIG. 1 is a front view showing an arrangement of an article supply device for implementing an article supply control method in a sorting machine of the present invention.

FIG. 2 is an explanatory diagram showing an example of a speed pattern used in the method.

FIG. 3 is a plan view of the article supply device.

FIG. 4 is a front view of the article supply device.

[Explanation of symbols]

 Reference Signs List 1 main conveyor 2 supply conveyor 20 introduction conveyor 21 first supply conveyor 22 second supply conveyor 23 third supply conveyor 24 fourth supply conveyor 21M, 22M, 23M, 24M servo motor S1, S2, S3 sensor

Claims (1)

(57) [Claims] An article is supplied from a supply conveyor attached to the side of a main conveyor, which is formed by connecting a number of breads for sorting articles while conveying the articles, to the main conveyor pans in a timely manner. Supply control in a sorted sorting machine, the supply conveyor (2).
Is divided into a plurality of parts in the transfer direction of the article (G), and the supply conveyors (21, 22, 23, 24) are independently driven by servo motors (21M, 22M, 23M, 24M). , The timing of feeding the article (G) sent to the first supply conveyor (21) constituting the supply conveyor (2), and the pan of the main conveyor (1) to which the article (G) is supplied. , And one of a plurality of predetermined speed patterns (v1, v2,..., Vn) having the same acceleration (α) with the acceleration start time shifted according to the detected shift amount. And the speed pattern (v1, v2,..., Vn)
Drives the first supply conveyor (21) to transfer the article (G) toward the second supply conveyor (22), and at the same time, the velocity patterns (v1, v2,..., Vn).
The articles (G) accelerated according to and sent to the second supply conveyor (22) are converted from the final velocity of the velocity pattern (v1, v2,..., Vn) by the second supply conveyor (22). The third supply conveyor (with the deviation from the pan timing of the main conveyor (1) being driven by acceleration / deceleration to the average speed of the final speed of each speed pattern (v1, v2,..., Vn). 23) A method for controlling the supply of articles in a sorter, comprising: