JPH09263324A - Article carrying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely change the direction of an article even when moving speed of the article carried by a conveyor is varied. SOLUTION: This device is constituted so that it is provided with a sorting magnet 13a controlled so as to sort an articl by a drive part 18 of which drive is controlled by a control part 20. In this case, the control part 20 controls to drive the drive device 18 so that the article detecting timing of a standard sensor 21S is set as a sorting timing by the drive device 18 at standard movement of the article, the article detecting timing of a sensor 21H for high speed is set as the sorting timing by the drive device 18 at high speed movement of the article, and the article detecting timing of a sensor 21L for low speed is set as the sorting timing by the drive device 18 at low speed movement of the article.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a belt conveyor,
The present invention relates to an article conveying device suitable for use in a roller conveyor or the like.

[0002]

2. Description of the Related Art Conventionally, there is a device described in Japanese Patent Application Laid-Open No. 7-187376 as an example of an article transfer device for turning an article being conveyed by a conveyor, for example, by rotating the conveyer by 90 degrees to change the direction.

[0003] This prior art includes a conveyor for placing and transporting articles, a moving magnet provided on the articles, and a fixed magnet provided on a frame for attracting the moving magnets,
The moving magnet provided on the article is a pair of moving magnets arranged at a predetermined interval, and the fixed magnet is
A first fixed magnet disposed in the direction of conveyance of the conveyor and attracting the pair of moving magnets directed in parallel with the direction of conveyance of the conveyor, and a first fixed magnet provided downstream of the first fixed magnet; A second fixed magnet disposed at substantially the same interval as the moving magnets and parallel to the conveying direction of the conveyor, and attracting each of the pair of moving magnets oriented in a direction orthogonal to the conveying direction of the conveyor. And a first fixed magnet between the first fixed magnet and the second fixed magnet.
Distributing magnets for sequentially attracting the pair of moving magnets delivered from the first fixed magnet are provided at the distal end of the fixed magnet, and at least the transport direction front end of the distributing magnet is moved in a direction orthogonal to the transport direction. Displaceable, and further driven and controlled by the control unit, and displaces at least the front end of the distribution magnet toward one of the pair of second fixed magnets on condition that the article reaches the distribution timing. In the pair of moving magnets sequentially attracted to the distribution magnet, the moving magnet positioned in the front in the transport direction is located on one side of the second fixed magnet, and the moving magnet located in the rear is located on the other side of the second fixed magnet. It is configured by providing a drive device to be delivered.

According to this prior art, for example, when the distribution magnet can swing and displace between two positions, a normal rotation position and a reverse rotation position, the distribution magnet whose front surface (forward moving magnet) of the article is at the normal rotation position. By swinging the distribution magnet from the forward rotation position to the reverse rotation position at the distribution timing placed on one side of the second fixed magnet from, and passing the moving magnet behind the article to the other side of the second stationary magnet, the article is It will be rotated 90 degrees.

[0005]

However, according to the prior art, the distribution timing of the distribution magnets driven by the above-described driving device is determined based on the side of the article delivery area from the distribution magnet side of the articles on the conveyor to the second fixed magnet side. The article detection timing by a sensor provided nearby is used.

For this reason, when the article slides on the conveyor and is slower than the standard moving speed, such as when the conveyor suddenly starts, even if the sorting magnet is swung at the timing when the sensor detects the front side of the article, the article can be swung. Moving magnet in front of is still second
The front moving magnet is delivered to the other side of the second fixed magnet without being placed on one side of the fixed magnet, and the article is not rotated by 90 degrees.

On the other hand, when an article slides on the conveyor and is faster than the standard moving speed, such as when the conveyor stops suddenly,
Even if the distribution magnet is swung at the timing when the sensor detects the front surface of the article, before the swing, not only the moving magnet in front of the article but also the moving magnet behind it is on one side of the second fixed magnet. It crosses and does not turn the article 90 degrees.

An object of the present invention is to make it possible to reliably change the direction of an article even when the moving speed of the article conveyed by the conveyor fluctuates.

[0009]

According to a first aspect of the present invention, there is provided a conveyor for placing and conveying an article, a moving magnet provided on the article, and a moving magnet provided on a frame for attracting the moving magnet. A fixed magnet is provided, and the moving magnet provided on the article is a pair of moving magnets disposed at a predetermined interval, and the fixed magnet is disposed in the conveying direction of the conveyor, A first fixed magnet that attracts both of the pair of moving magnets that are oriented parallel to the transport direction,
It is provided on the downstream side of the first fixed magnet, is disposed in parallel with the conveying direction of the conveyor at substantially the same interval as the interval between the pair of moving magnets, and is oriented in a direction orthogonal to the conveying direction of the conveyor. A second fixed magnet that attracts each of the pair of moving magnets, between the first fixed magnet and the second fixed magnet, from the first fixed magnet to the tip of the first fixed magnet. A distribution magnet for sequentially attracting the pair of moving magnets to be delivered is provided, and at least a front end of the distribution magnet in the transport direction can be displaced in a direction orthogonal to the transport direction. Was displaced toward at least one of the pair of second fixed magnets on the condition that the distribution timing was reached, and the distribution magnets were sequentially attracted to the distribution magnet. An article transporting device provided with a drive device for delivering a moving magnet located forward of the pair of moving magnets to the one side of the second fixed magnet and a moving magnet located behind to the other side of the second fixed magnet. In the above, a plurality of sensors are arranged sequentially from the upstream side to the downstream side of the conveyor in the conveying direction, beside the article passing area from the sorting magnet side of the conveyor to the second fixed magnet side. It is possible to detect the passage of the article by each sensor of, the control unit, by changing the sensor to be used selectively according to the moving state of the article, to drive the article detection timing of the sensor selected according to the moving state of the article The drive of the drive device is controlled as the distribution timing by the device.

The present invention according to claim 2 is the same as the invention according to claim 1, further comprising a conveyor on the side of an article transfer area from the sorting magnet side of the articles on the conveyor side to the second fixed magnet side. A sensor for high speed, a sensor for standard, and a sensor for low speed are arranged sequentially from the upstream side to the downstream side in the transport direction of the article, and the passage of the article can be detected by each of these sensors, and the control unit causes the standard movement of the article. Sometimes the standard sensor article detection timing is the distribution timing by the driving device, the high-speed sensor article detection timing is the high-speed sensor distribution timing when the article is moving at high speed, and the low-speed sensor article detection timing is the low-speed sensor article distribution timing when the article is low-speed moving. The drive control of the drive device is performed as the distribution timing by the drive device.

According to the present invention described in claim 1, the following effects are obtained. In any moving state of the article, the moving magnet in front of the article is placed on one side of the second fixed magnet by changing the sensor to be selectively used according to the moving state of the article and changing the distribution timing by the drive device. After that, the moving magnet behind the article is passed to the other side of the second fixed magnet, and the article can be turned.

According to the present invention described in claim 2, the following actions (1) to (4) are provided. When the moving speed of the article is in the standard state, such as during steady operation of the conveyor, by displacing the sorting magnets at the timing when the standard sensor detects the front surface of the article,
After the moving magnet in front of the article is placed on one side of the second fixed magnet, the moving magnet behind the article is passed to the other side of the second fixed magnet, and the article can be turned.

When an article slides on the conveyor and its moving speed is lower than the standard speed, such as when the conveyor is suddenly accelerated, a low speed provided on the downstream side in the conveying direction of the conveyor in accordance with the delay of the moving speed. Sensors are used. That is, by displacing the distribution magnet at the timing when the low-speed sensor detects the front surface of the article, the moving magnet in front of the article is placed on one side of the second fixed magnet, and then the moving magnet behind the article is moved to the second fixed magnet. It passes to the other side of the fixed magnet and can turn the article.

When an article slides on the conveyor and its moving speed is faster than the standard speed, such as when the conveyor is suddenly stopped, a high-speed conveyor provided on the upstream side in the conveying direction of the conveyor according to the moving speed. Sensors are used. That is, by displacing the distribution magnet at the timing when the high-speed sensor detects the front surface of the article, the moving magnet in front of the article is placed on one side of the second fixed magnet, and then the moving magnet behind the article is moved to the second fixed magnet. It passes to the other side of the fixed magnet and can turn the article.

The control unit determines the state of the moving speed of the article by (1) information on the driving state of the conveyor (information on the operation mode by the conveyor driving unit) or (2) information on the moving speed of the article on the conveyor. (The output of the article moving speed detector) and the like.

[0016]

FIG. 1 is a schematic view showing an article transporting apparatus, FIG. 2 is a schematic view showing a main part of the article transporting apparatus, FIG. 3 is a view taken along the line III-III in FIG. Is a view taken along the line IV-IV in FIG. 2, and FIG. 5 is a schematic view showing a state in which the article is turned.

In FIG. 1, a conveyor 1 comprises a pair of rotating shafts 2 rotatably supported at a predetermined distance from each other and an endless flat belt 3 made of a non-magnetic material and extending horizontally over both rotating shafts 2. A flat non-magnetic support frame 4 is provided below the upper horizontal portion of the flat belt 3, and the lower surface of the flat belt 3 is supported by the support frame 4 on the flat belt 3. The article 5 can be placed and transported. 6 is a conveyor drive motor. Article 5 above
As shown in FIG. 2, a pair of moving magnets 11a and 11b are attached at a predetermined interval to the bottom of the support frame 4 and one first fixed magnet 12a is Mounted parallel to the transport direction. Therefore, the pair of moving magnets 11a and 11b provided on the article 5 are
While being conveyed by the fixed magnets 12a, the conveyor 1 is conveyed in a state parallel to the conveying direction of the conveyor 1. On the other hand, on the downstream side of the first fixed magnet 12a, the first fixed magnet 1
2a, two rows of second fixed magnets 12b spaced apart from each other by a predetermined distance,
12c is provided in parallel with the conveying direction of the conveyor 1, and in a state where the pair of moving magnets 11a and 11b are in a direction orthogonal to the conveying direction, one moving magnet 11a is used as one second fixed magnet 12b and the other as the other. While the moving magnet 11b is attracted by the other second fixed magnet 12c, it can be stably transported in that state.

Next, between the first fixed magnet 12a on the upstream side and the second fixed magnets 12b, 12c on the downstream side, a distribution magnet for attracting the moving magnets 11a, 11b to rotate the article 5 forward or backward. 13a. This sorting magnet 1
As shown in FIGS. 2 and 3, 3a is fixed to a central portion on the swinging plate 14, and magnets 13b having the same polarity as the moving magnets 11a and 11b are arranged on both sides of the distribution magnet 13a. I have. Therefore, the moving magnets 11a and 11b are attracted only by the central distribution magnet 13a while receiving the repulsive force of the magnets 13b on both sides. The swing plate 14 can swing around the shaft 15 by rotatably supporting a shaft 15 attached to the lower surface on the first fixed magnet 12a side on a frame 16. The second fixed magnet 12 of the swing plate 14
b, one end of the link 17 is connected to the lower surface on the 12c side, and FIG.
The other end of the link 17 is connected to an eccentric pin 20 provided on the rotating plate 19 as shown in FIG. The rotary plate 19 is rotated in the forward and reverse directions by a servo motor 18, and the rotary plate 19 is rotated by the servo motor 18 to position the eccentric pins 20 at two positions shown in FIG. Thus, the swing plate 14 can be positioned from the neutral position to a forward rotation position where the swing plate is rotated clockwise in FIG. 2 and a reverse rotation position where the swing plate 14 is rotated and rotated counterclockwise. The right end of the distribution magnet 13a is always connected to the first fixed magnet 12a, regardless of whether the swing plate 14 is located at the normal rotation position or the reverse rotation position. On the other hand, the pair of second fixed magnets 12
The right ends of b and 12c are inclined portions 12 where the distance between them is narrowed.
b ′ and 12c ′, and one second fixed magnet 12
The inclined portion 12b 'of the second fixed magnet 12c is arranged so as to be aligned with the distributing magnet 13a when the distributing magnet 13a is located at the normal rotation position.
c 'is arranged so as to be aligned with the distribution magnet 13a when the distribution magnet 13a is located at the reverse rotation position.

That is, the servo motor 1 of the distribution magnet 13a
8 is controlled by the control unit 20 on condition that the article 5 has reached the distribution timing, and switches the distribution magnet 13a to one of the normal rotation position and the reverse rotation position as described above. That is, when the sorting magnet 13a is positioned at the normal rotation position, the front moving magnet 11a of the pair of moving magnets 11a and 11b of the article 5 attracted by the sorting magnet 13a is transferred to the left second fixed magnet 12c, The rear moving magnet 11b is transferred to the right second fixed magnet 12b. Conversely, when the distribution magnet 13a is positioned at the reverse rotation position,
The front moving magnet 11a of the pair of moving magnets 11a and 11b of the article 5 attracted by the distribution magnet 13a is transferred to the right second fixed magnet 12b, and the rear moving magnet 11b is transferred to the left second fixed magnet 12c. Delivered.

Further, on the side of the article delivery area from the sorting magnet 13a side of the articles 5 on the conveyor 1 to the second fixed magnets 12b, 12c side, from the upstream side in the conveying direction of the conveyor 1 to the downstream side. A high-speed sensor 21H, a standard sensor 21S, and a low-speed sensor 21L are sequentially arranged.
The passage of the article 5 can be detected by 1H, 21S, and 21L.

The control unit 20 includes the sensors 21H, 2
The detection results of 1S and 21L are transferred, and information on the operation mode of the conveyor 1 (steady operation state, sudden start state, sudden stop state, etc.) obtained from the operation state of the drive motor 6 of the conveyor 1 is transferred. Then, the control unit 20 controls the servo motor 18 of the distribution magnet 13c as described in (1) to (3) below.

(1) When the traveling speed of the article 5 is in the standard state during the steady operation of the conveyor 1, the standard sensor 21S
Is the distribution timing of the distribution magnet 13a by the servo motor 18.

(2) When the conveyor 1 is suddenly started and the moving speed of the article 5 is low, the low-speed sensor 21L
Is the distribution timing of the distribution magnet 13a by the servo motor 18.

(3) When the moving speed of the article 5 is high when the conveyor 1 is suddenly stopped, the high-speed sensor 21H
Is the distribution timing of the distribution magnet 13a by the servo motor 18.

Therefore, the article 5 in the conveyor 1 is
The direction can be changed as shown in (1) to (3). (1) The article 5 is transported in a state parallel to the transport direction with the pair of moving magnets 11a and 11b being attracted to the first fixed magnet 12a. Then, the moving magnet 11a in front of the article 5 is sequentially transferred to the sorting magnet 13a and is attracted (FIG. 5A).

(2) The article 5 is moved from the sorting magnet 13a side to the second
Upon reaching the article delivery area to the fixed magnets 12b and 12c (FIG. 5B), the control unit 20 selects a sensor according to the operation mode of the conveyor 1 (moving speed state of the article 5) as described above. One of the article detection timings 21H, 21S, and 21L is set as the distribution timing, and the servo motor 18 of the distribution magnet 13a is driven (FIG. 5).
(C)).

(3) The servo motor 18 is provided with the distribution magnet 13a.
Is positioned at, for example, the clockwise normal rotation position in FIGS. 2 and 5, the moving magnet 11 a in front of the article 5 becomes the second fixed magnet 12.
c, the moving magnet 11b behind the article 5 is swung toward the second fixed magnet 12b, and the second fixed magnet 12b
To rotate the article 5 by 90 degrees,
The pair of moving magnets 11a and 11b can be rotated in a direction orthogonal to the transport direction.

Therefore, according to this embodiment,
There is a working effect. When the moving speed of the article 5 is in the standard state, such as during the steady operation of the conveyor 1, the standard sensor 21S
By displacing the distribution magnet 13a at the timing when the front surface of the article 5 is detected, the moving magnet 11a in front of the article 5 is placed on one side of the second fixed magnets 12b and 12c.
The moving magnet 11b behind the second fixed magnet 12b, 12c
And the article 5 can be turned.

As in the case of rapid acceleration of the conveyor 1, the article 5
When the vehicle slides on the conveyor 1 and its moving speed is slower than the standard speed, the low speed sensor 21L provided downstream of the conveyor 1 in the conveying direction is used according to the delay of the moving speed. That is, by displacing the distribution magnet 13a at the timing when the low-speed sensor 21L detects the front surface of the article 5, the moving magnet 11a in front of the article 5 is moved to the second fixed magnet 1
After being placed on one side of 2b, 12c, the moving magnet 11b behind the article 5 is passed to the other side of the second fixed magnets 12b, 12c, and the article 5 can be turned.

As in the case where the conveyor 1 is suddenly stopped, the articles 5
When the vehicle slides on the conveyor 1 and its moving speed is higher than the standard speed, the high-speed sensor 21H provided on the upstream side in the transport direction of the conveyor 1 is used in accordance with the advance of the moving speed. That is, by displacing the distribution magnet 13a at a timing when the high-speed sensor 21H detects the front surface of the article 5, the moving magnet 11a in front of the article 5 is moved to the second fixed magnet 1a.
After being placed on one side of 2b, 12c, the moving magnet 11b behind the article 5 is passed to the other side of the second fixed magnets 12b, 12c, and the article 5 can be turned.

The embodiment of the present invention has been described in detail above with reference to the drawings. However, the specific configuration of the present invention is not limited to this embodiment, and the design can be changed without departing from the gist of the present invention. Etc. are included in the present invention. For example, the driving device may be configured to displace the distribution magnet to a neutral position, and three positions of a forward rotation position and a reverse rotation position sandwiching the neutral position.

Further, an article moving speed detector is provided on the side of the conveyor, and the control unit obtains the detection result of the detector and judges the moving speed state of the article. From the judgment result, a high-speed sensor, a standard sensor, Which of the detection results of the low-speed sensor should be adopted as the distribution timing may be determined.

The article detection sensors provided on the side of the conveyor include high-speed sensors, standard sensors, and low-speed sensors.
The number is not limited to two, and may be any number of two or more according to the magnitude of the fluctuation width of the moving speed of the article.

[0034]

As described above, according to the present invention, even when the moving speed of the articles conveyed by the conveyor fluctuates,
The article can be reliably turned.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing an article transport device.

FIG. 2 is a schematic diagram showing a main part of the article transport device.

FIG. 3 is an arrow view along the line III-III in FIG. 2;

FIG. 4 is an arrow view along the line IV-IV in FIG. 2;

FIG. 5 is a schematic view showing an article direction changing state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Conveyor 4 Frame 5 Article 11a, 11b Moving magnet 12a First fixed magnet 12b, 12c Second fixed magnet 13a Distributing magnet 18 Servo motor (drive device) 20 Control unit 21H High speed sensor 21S Standard sensor 21L Low speed sensor

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshiyuki Omori 2-1-3 Bunhana, Sumida-ku, Tokyo Inside Kao Institute of Stock Companies (72) Inventor Ikuo Iwashita 58 Sogo Tamoto-cho, Kanazawa-shi, Ishikawa Shibuya Business

Claims (2)

[Claims] 1. A conveyer for placing and transporting an article, a moving magnet provided on the article, and a fixed magnet provided on a frame and attracting the moving magnet, wherein the moving magnet provided on the article is provided. A pair of moving magnets arranged at a predetermined interval, and the fixed magnet,
A first fixed magnet disposed in the direction of conveyance of the conveyor and attracting the pair of moving magnets directed in parallel with the direction of conveyance of the conveyor, and a first fixed magnet provided downstream of the first fixed magnet; A second fixed magnet disposed at substantially the same interval as the moving magnets and parallel to the conveying direction of the conveyor, and attracting each of the pair of moving magnets oriented in a direction orthogonal to the conveying direction of the conveyor. And a distributing magnet for sequentially attracting the pair of moving magnets delivered from the first fixed magnet to the first fixed magnet between the first fixed magnet and the second fixed magnet. And at least the front end of the sorting magnet in the transport direction can be displaced in a direction orthogonal to the transport direction, and is further driven and controlled by the control unit, on condition that the article reaches the distribution timing. At least the front end portion of the distributing magnet is displaced toward one of the pair of second fixed magnets, and the moving magnet is located forward of the conveying direction among the pair of moving magnets sequentially attracted by the distributing magnet. Is provided on one side of the second fixed magnet, and a drive device for delivering the moving magnet located on the rear side to the other side of the second fixed magnet is provided. Along the side of the article transfer area to the fixed magnet side, a plurality of sensors are sequentially arranged from the upstream side to the downstream side in the conveyor conveying direction, and the passage of the article can be detected by each of the sensors, and the control is performed. The section changes the sensor to be used selectively according to the moving state of the article, and sets the article detection timing of the sensor selected according to the moving state of the article as the distribution timing by the driving device. Article carrying apparatus, characterized by driving and controlling the drive device Te. 2. A high-speed sensor, a standard, in order from the upstream side to the downstream side of the conveyor in the conveying direction, beside the article passing area from the sorting magnet side of the conveyor to the second fixed magnet side. Sensors, low-speed sensors are arranged, and passage of an article can be detected by each of these sensors, and the control unit sets the article detection timing of the standard sensor as the distribution timing by the driving device when the article moves standardly, and the high-speed article At the time of movement, the article detection timing of the high speed sensor is set as the distribution timing by the drive device,
The article conveying apparatus according to claim 1, wherein when the article is moving at a low speed, the article detection timing of the low speed sensor is used as the sorting timing by the drive apparatus to drive and control the drive apparatus.