JP5534302B2 - Conveyor equipment - Google Patents

Description

  The present invention relates to a conveyor apparatus including a conveyor main body that conveys articles from a conveyance start end position to a conveyance end position, and a load collapse detection unit that detects load collapse of articles conveyed by the conveyor body.

  In a conventional conveyor device, for example, a plurality of unit articles stacked on a pallet are transported as articles to be transported, and the articles are not collapsed on the front end side and the rear end side in the transport direction. In order to detect whether or not, a load collapse detection means is provided. A pallet detector that detects that the article has arrived at a detection position between the conveyance start end position and the conveyance end position is provided, and as a load collapse detection unit, the article in the conveyance direction is A front end side load collapse detection sensor for detecting the load collapse on the front end side and a rear end side load collapse detection means for detecting the load collapse on the rear end side in the transport direction are provided. The pallet detector determines whether or not load collapse has occurred on the front end side in the transport direction based on the detection information of the front end side load collapse sensor when the article reaches the detection position. Whether or not cargo collapse has occurred on the rear end side in the transport direction is determined based on detection information from the rear end side collapse sensor when the article arrives (see, for example, Patent Document 1).

Japanese Utility Model Publication No. 6-43056

  In the apparatus described in Patent Document 1, a pallet detector is provided to detect that the article has reached the detection position, and in addition to the load collapse detection means, a pallet detector must be provided, The configuration was complicated and the cost was increased. Further, in the apparatus described in Patent Document 1, in order to detect load collapse, the relative position of the three sensors of the pallet detector, the front end side load collapse sensor, and the rear end side load collapse sensor is set to a desired relative position. It is necessary to install so that it becomes. In other words, when the pallet detector detects that the article has reached the detection position for the article that has not collapsed, install the front end side load collapse sensor slightly ahead of the article. In addition, it is necessary to install the rear end side load collapse sensor slightly behind the article. Thus, after adjusting the relative positions of the three sensors of the pallet detector, the front end side load collapse sensor, and the rear end side load collapse sensor, the pallet detector, the front end side load collapse sensor, and the rear end side load collapse sensor Must be installed, resulting in a complicated configuration and complicated installation work.

  The present invention has been made paying attention to such a point, and the object thereof is to simplify the configuration and reduce the cost while simplifying the installation work of the sensor. The object is to provide a conveyor device capable of accurately detecting collapse.

In order to achieve this object, the first characteristic configuration of the conveyor apparatus according to the present invention includes a conveyor main body that conveys articles from a conveyance start end position to a conveyance end position, and load collapse of the articles conveyed by the conveyor main body. In the conveyor apparatus provided with the load collapse detection means to detect,
As the load collapse detection means, a front end side load collapse sensor for detecting a load collapse on the front end side in the transport direction by the conveyor body with respect to an article located at the transport start end position, and an article located at the transport end position A rear end side load collapse sensor different from a front end side load collapse sensor for detecting the load collapse on the rear end side in the conveying direction, and the front end side load collapse sensor and the rear end side load collapse sensor include: In the point which is provided in the position which differs in the conveyance direction of the said conveyor main body .

  According to this characteristic configuration, for example, when an operator positions an article at the conveyance start end position, the front end side load collapse sensor can detect the load collapse on the front end side in the conveyance direction of the article. Further, by conveying the article from the conveyance start end position to the conveyance end position by the conveyor body, the rear end side load collapse sensor can detect the load collapse on the rear end side in the conveyance direction of the article. Here, in order to detect that the article has been conveyed to the conveyance end position, the conveyor body is provided with a light emitting / receiving type or contact type sensor such as a stock sensor in advance, and the conveyor body is detected from the detection information of this sensor. It is possible to detect that the article has been conveyed to the conveyance end position. Therefore, the collapse of the article can be detected without providing a detector for detecting the position of the article conveyed by the conveyor body in order to detect the collapse of the article.

  In addition, the front end side load collapse sensor can detect the load collapse before being conveyed by the conveyor device, the rear end side load collapse sensor can detect the load collapse after being conveyed by the conveyor device, for example, Compared with the one that detects the collapse of the load at one time before being conveyed by the conveyor device, the collapse of the load of the article can be accurately detected.

  The front end side load collapse sensor may be simply installed corresponding to the conveyance start end position, and the rear end side load collapse sensor may be simply installed corresponding to the conveyance end position. The front end side load collapse sensor does not require complicated adjustment work of adjusting the relative positions of the three sensors of the pallet detector, the front end side load collapse sensor and the rear end side load collapse sensor. And each installation operation | work of a rear end side load collapse sensor can be performed.

  From the above, it is possible to realize a conveyor device that can simplify the configuration and reduce the cost while simplifying the sensor installation work and accurately detecting the collapse of the article.

  A second characteristic configuration of the conveyor device according to the present invention is a light projecting unit in which the front end side load collapse sensor and the rear end side load collapse sensor project detection light along a width direction of the conveyor body, and A light emitting / receiving sensor provided with a light receiving portion for receiving the detection light projected by the light projecting portion, and a pair of support portions for supporting the light projecting portion and the light receiving portion of the front end side load collapse sensor And a pair of support portions that support the light projecting portion and the light receiving portion of the rear end side load collapse sensor are provided on a pair of sensor installation support portions that are respectively installed at both end portions in the lateral width direction of the conveyor body. It is in that it is configured.

  According to this characteristic configuration, the pair of support portions for supporting the light projecting portion and the light receiving portion in the front end side load collapse sensor and the rear end side load collapse sensor are configured by a common pair of sensor installation support portions. Can do. Therefore, the structure for supporting the sensor can be simplified and the cost can be reduced.

  A third characteristic configuration of the conveyor device according to the present invention is provided with a height detection sensor for detecting whether or not the height of the article is higher than a set height, and the height detection sensor is configured to support the sensor installation. It is in the point supported by the part.

  For example, if the conveyor transports goods to be loaded into an automated warehouse, it may cause inconveniences such as being unable to be stored in the automated warehouse if the height of the article is higher than the set height. In doing so, it is required to detect whether the height of the article is higher than the set height. Therefore, according to the present characteristic configuration, the height can be met by providing the conveyor device with the height detection sensor. In addition, since the support portion for supporting the height detection sensor is a sensor installation support portion for supporting the front end side load collapse sensor and the rear end side load collapse sensor, the structure is simplified and the cost is reduced. Reduction can be achieved.

  According to a fourth characteristic configuration of the conveyor apparatus according to the present invention, the conveyor body is configured to store articles to an automatic warehouse including an article storage shelf and an article transport device that transports articles between the article storage shelf and the article transfer unit. The carry-in part is arranged as the conveyance start end position, and the article transfer part of the article conveyance apparatus is arranged as the conveyance end position.

  According to this characteristic configuration, when an article is carried into an automatic warehouse, it is provided as a conveyor device that conveys the article carried into the carry-in section to the article delivery section. When an article is conveyed by the article conveying apparatus, there is a possibility that the article collapses if the article collapses. As described in the first feature configuration, the conveyor apparatus Since it is possible to detect whether or not an article has collapsed when it is transported by the above, it is possible to prevent the above-described inconvenience.

  According to a fifth characteristic configuration of the conveyor device according to the present invention, an installation interval between the front end side load collapse sensor and the rear end side load collapse sensor in the transport direction is smaller than a total length of the article in the transport direction. It is in the set point.

  According to this characteristic configuration, the length of the conveyor in the conveyance direction is reduced by setting the installation interval between the front end side load collapse sensor and the rear end side load collapse sensor in the conveyance direction to be smaller than the total length of the articles in the conveyance direction. It can be made as short as possible, and the device can be made compact.

The figure which shows the state in which the article was carried in to the carrying-in part in the top view of schematic structure of a warehouse installation The figure which shows the state in which the article was carried in to the carrying-in part in the perspective view of a conveyor The figure which shows the state by which the article | item was conveyed to the article delivery part in the top view of schematic structure of a warehouse installation The figure which shows the state by which the articles | goods were conveyed to the article transfer part in the perspective view of a conveyor

An embodiment of a warehouse facility to which a conveyor device according to the present invention is applied will be described with reference to the drawings.
As shown in FIGS. 1 and 2, the warehouse facility includes an article storage shelf 1, an automatic warehouse 4 having a stacker crane 3 for conveying an article B between the article storage shelf 1 and the article delivery unit 2, and an automatic Conveyor 6 that conveys article B from conveyance start end position H1 to conveyance end position H2 with article 5 loading section 5 for warehouse 4 as conveyance start end position H1 and article transfer section 2 of stacker crane 3 as conveyance end position H2 (present invention) And an operation control device (not shown) for controlling the operation of the automatic warehouse 4 and the conveyor 6. FIG. 1 is a plan view of the main part of the warehouse equipment, and FIG. 2 is a perspective view of the main part of the warehouse equipment, both showing the state where the article B is carried into the carry-in part 5. 3 and 4 show a state in which the article B is transported to the article transfer unit 2.

  The article B is configured as an article B in which a plurality of unit articles B1 are stacked on the pallet P. When the article B is carried into the automatic warehouse 4, as shown in FIGS. 1 and 2, when the operator carries the article B into the carry-in section 5 using a forklift or the like, the operation control device And as shown in FIG. 4, the conveyor 6 is operated and the goods B are conveyed from the carrying-in part 5 to the goods transfer part 2. As shown in FIG. Then, when the article B is conveyed to the article delivery unit 2 by the conveyor 6, the operation control device operates the stacker crane 3 to receive the article B from the article delivery unit 2, and receives the received article B in the article storage shelf 1. It is stored in one of the plurality of storage units 10.

  The conveyor 6 conveys the article B from the carry-in section 5 to the article transfer section 2, but is configured to be able to carry the article B from the article transfer section 2 to the carry-in section 5 by reversing the conveyance direction. Thereby, the goods B can be carried in and out using one conveyor 6, and the carrying-in part 5 can also be comprised so that the carrying-out part which carries out the goods B from the automatic warehouse 4 may be combined. When configured in this manner, when the article B is carried out from the automatic warehouse 4, if the operation control device has a carry-out request to carry out the article B stored in the article storage shelf 1, the stacker crane 3 is activated. Then, the article B is taken out from the storage unit 10 and conveyed to the article transfer unit 2. Then, when the article B is conveyed to the article transfer unit 2 by the stacker crane 3, the operation control device operates the conveyor 6 to transfer the article B from the article transfer unit 2 to the carry-in unit 5 (unloading unit). In this way, the worker moves the article B conveyed to the carry-in unit 5 (carry-out unit) to a desired carry-out location using a forklift or the like.

  A pair of article storage shelves 1 are provided at an interval in the front-rear direction of the shelf so that the article B loading and unloading sides face each other. Between the pair of article storage shelves 1, a traveling rail 7 of the stacker crane 3 is stored. It arrange | positions over the full length of the shelf width direction of the shelf 1. FIG. Each of the pair of article storage shelves 3 is provided with a plurality of front and rear support columns 8 spaced apart from each other in the width direction of the shelf, and each of the pair of front and rear support columns has a mounting support portion 9 spaced apart in the vertical direction. Are provided. The storage section 10 in the article storage shelf 1 is configured to store the article B in a form in which the article B is placed and supported by a pair of left and right placement support parts 9. ).

  The stacker crane 3 includes a traveling carriage 11 that can travel along the traveling rail 7, a lifting platform 13 that is movable up and down along a pair of front and rear lifting guide masts 12 erected on the traveling carriage 11, and a lifting platform 13. It comprises an article transfer device 14 provided. Although not described in detail, the article transfer device 14 has a retraction position where the fork on which the article B can be placed and supported is retracted to the lifting platform 13 side, and a protruding position which protrudes toward the storage unit 10 side and the article transfer unit 2 side. It is composed of a fork-type article transfer device that can be withdrawn and retracted.

  The automatic warehouse 4 provided with the article storage shelf 1 and the stacker crane 3 is provided with a fence-shaped intrusion prevention body 15 surrounding the article storage shelf 1 and the stacker crane 3, and is surrounded by the intrusion prevention body 15. An article storage shelf 1 and a stacker crane 3 are installed in the inner space. And the conveyor 6 is arrange | positioned in the site | part which connects internal space and external space among the intrusion prevention bodies 15, and the intrusion prevention bodies 15 are installed in the both sides of the width direction of the conveyor 6. FIG. Thereby, the penetration | invasion to the inside of the penetration prevention body 15 is made only into the area | region which the articles | goods conveyed with the conveyor 6 occupy, and its periphery. And the conveyor 6 is arrange | positioned by making the position which is the outer side of the intrusion prevention body 15 into the conveyance start end position H1, and the position inside the intrusion prevention body 15 as the conveyance end position H2.

  Here, the article transfer unit 2 that is the conveyance end position H2 of the conveyor 6 is provided so as to be aligned with the article storage shelf 1 in the horizontal direction of the shelf (left and right direction in FIG. 1). Thereby, the storage part 10 of the goods storage shelf 1 is provided in the both sides of the goods transfer part 2 in the shelf width direction. A storage unit 10 is also provided above the article transfer unit 2. In addition, the conveyance direction of the conveyor 6 and the article transfer direction of the stacker crane 3 are the same in the longitudinal direction of the shelf, and the article B is conveyed with respect to the article B conveyed to the article delivery unit 2 by the conveyor 6. The stacker crane 3 can be received as it is without changing the orientation or the like.

  The conveyor 6 is constituted by a chain conveyor provided with a pair of placement and conveyance type conveyor main bodies 16 that place and support both ends of the article B in the width direction. The conveyor 6 is configured to place and convey the article B from the conveyance start end position H1 to the conveyance end position H2 with the carry-in section 5 as the conveyance start end position H1 and the article transfer section 2 as the conveyance end position H2.

  The conveyor 6 has a front end side load collapse sensor 17 that detects a load collapse on the front end side in the conveyance direction by the conveyor 6 with respect to the article B located at the conveyance start end position H1, and an article B located at the conveyance end position H2. In addition, a rear end side load collapse sensor 18 that is different from the front end side load collapse sensor 17 that detects the load collapse on the rear end side in the conveying direction is provided. The installation interval between the front end side load collapse sensor 17 and the rear end side load collapse sensor 18 in the conveying direction is set to be smaller than the total length of the article B in the conveying direction, and the length of the conveyor 6 in the conveying direction. Is made as short as possible to make it a compact facility.

  The front end side load collapse sensor 17 receives the detection light projected by the front end side light projecting unit 17a that projects detection light along the width direction of the conveyor body 16, and the front end side light projecting unit 17a. It is composed of a light emitting / receiving sensor provided with a front end side light receiving portion 17b. Further, the rear end side load collapse sensor 18 projects the detection light along the lateral width direction of the conveyor body 16, and the rear end side light projecting unit 18a and the rear end side light projecting unit 18a project the detection light. The light emitting / receiving sensor includes a rear end side light receiving portion 18b for receiving light. Both the front-end-side load collapse sensor 17 and the rear-end-side load collapse sensor 18 apply to the article B that has collapsed when the light receiving portions 17b, 18b do not receive the detection light from the light projecting portions 17a, 18a. As a result, the collapse of the article B is detected.

  As shown in FIGS. 2 and 4, the front end side light projecting unit 17a and the front end side light receiving unit 17b are provided in a plurality (for example, two) at intervals in the vertical direction, and the rear end side light projecting unit 18a and A plurality of (for example, two) rear-end light-receiving portions 18b are also provided at intervals in the vertical direction. The pair of support portions that support the front end side light projecting portion 17a and the front end side light receiving portion 17b, and the pair of support portions that support the rear end side light projecting portion 18a and the rear end side light receiving portion 18b are the conveyor body 16. It is comprised by a pair of sensor installation support part 19 installed in each of the both ends of the horizontal width direction. The pair of sensor installation support portions 19 are formed in a bar shape extending in the vertical direction, and extend to the first horizontal support portion 20 a extending upstream in the transport direction of the conveyor body 16 and downstream in the transport direction of the conveyor body 16. A second horizontal support portion 20 b is provided in the sensor installation support portion 19. The front end side light projecting portion 17a and the front end side light receiving portion 17b are installed at the front end portion of the first horizontal support portion 20a, and the front end side light projecting portion 17a and the front end side light receiving portion are disposed at the front end portion of the second horizontal support portion 20b. The part 17b is installed.

  In addition to the front end side load collapse sensor 17 and the rear end side load collapse sensor 18, the conveyor 6 is provided with a height detection sensor that detects whether the height of the article B is higher than the set height. Similarly to the front end side load collapse sensor 17 and the rear end side load collapse sensor 18, the height detection sensor also projects a height light projecting portion 21 a that projects detection light along the lateral width direction of the conveyor body 16 and its height. The light projecting unit 21a includes a height light receiving unit 21b that receives the detection light projected by the light projecting unit 21a. When the height detection sensor does not receive the detection light from the height light projecting unit 21a by the height light receiving unit 21b, it is assumed that the height detection sensor is shielded by the product B higher than the set height. It is detected that the height is higher than the set height.

  Each of the pair of sensor installation support portions 19 includes a plurality of first horizontal support portions 20a and second horizontal support portions for supporting the front end side load collapse sensor 17 and the rear end side load collapse sensor 18 as described above. 20b is provided, but a height horizontal support portion 22 extending upstream and downstream in the conveying direction of the conveyor body 16 is provided above the first horizontal support portion 20a and the second horizontal support portion 20b. ing. A height light projecting portion 21a and a height light receiving portion 21b are provided at the front end portion of the height horizontal support portion 22 extending in the upstream side and the downstream side in the transport direction, and is a height detection sensor. The pair of support portions that support the vertical light projecting portion 21 a and the height light receiving portion 21 b are also configured by the pair of sensor installation support portions 19. Here, the height light projecting unit 21a and the height light receiving unit 21b, which are height detection sensors, are provided at intervals in the transport direction, but both of the two height detection sensors are When the article B conveyed by the conveyor 6 passes the installation position of the height detection sensor, it is configured to detect whether or not the height of the article B is higher than the set height.

  Regarding the arrangement positions of the light projecting parts 17a, 18a, 21a and the light receiving parts 17b, 18b, 21b in the front end side load collapse sensor 17, the rear end side load collapse sensor 18, and the height detection sensor, for example, conveyance The light projecting parts 17a, 18a, 21a can be arranged on the right side with respect to the direction, and the light receiving parts 17b, 18b, 21b can be arranged on the left side with respect to the transport direction. Accordingly, the light projecting portions 17a, 18a, and 21a of the front end side load collapse sensor 17, the rear end side load collapse sensor 18, and the height detection sensor are arranged on the same side in the lateral width direction of the conveyor body 16 to receive light. The parts 17b, 18b, 21b can also be arranged on the same side of the conveyor body 16 in the width direction.

Hereinafter, an operation when the article B is carried into the automatic warehouse 4 will be described.
The operation control device detects the front end side in the transport direction of the article B carried into the carry-in section 5 from the detection information of the front-end load collapse sensor 17 by inputting the carry-in information indicating that the article B has been carried into the carry-in section 5. Detect the presence or absence of collapse of the load. Here, although the illustration of the input of the carry-in information is omitted, a carry-in work completion button is installed in the carry-in unit 5, and the operator completes the carry-in work of the article B to the carry-in unit 5 and performs this carry-in work. The carry-in information is input to the operation control device by turning on the completion button.

  And if the article B carried into the carrying-in part 5 has a load collapse, the operation control device operates a lamp or a buzzer to notify the operator that the load collapse is abnormal, and the operator By performing a correction operation for correcting the posture or the like of the article B, the load collapse abnormality is canceled.

  When the operation control device confirms from the detection information of the front end side load collapse sensor 17 that there is no load collapse on the front end side in the conveying direction of the article B carried into the carry-in unit 5, the operation control device operates the conveyor 6 to carry in the carry-in unit 5 The article B is conveyed from the article delivery section 2 to the article delivery section 2. At this time, the operation control device detects whether or not the height of the article B conveyed by the conveyor 6 is higher than the set height from the detection information of the height detection sensor. When the height is higher than the set height, the operation control device operates the lamp or buzzer to notify the operator that the height is abnormal, and performs abnormal processing such as stopping the operation of the conveyor 6. And the operator performs the operation of correcting the height of the article. Here, although two height detection sensors are provided at intervals in the conveyance direction, the height of the article B may be detected only by the height detection sensor on the upstream side in the conveyance direction. The height of the article B may be detected by both of the height detection sensors.

  Then, the operation control device receives the conveyance end information indicating that the article B conveyed on the conveyor 6 has reached the conveyance end position H2, and detects the article transfer unit 2 from the detection information of the rear end side load collapse sensor 18. The presence / absence of collapse of the load on the rear end side in the conveyance direction of the article B conveyed to is detected. Here, regarding the input of the conveyance end information, a stock sensor (for example, a light emitting / receiving sensor or a conveyance end position H2) that detects whether or not the article B has reached the conveyance end position H2 in advance by the conveyor 6 is reached. Since a contact-type sensor that is pressed downward by the article B and is turned ON is provided, the operation control is performed by detecting that the article B has reached the conveyance end position H2 by the presence sensor. The conveyance end information is input to the apparatus.

  Then, if there is a load collapse, the operation control device activates a lamp or a buzzer to notify the worker that the load collapse is abnormal, so that the worker performs a correction operation to correct the posture of the article B, etc. I have to. The operation control device operates the stacker crane 3 by inputting no-load collapse information that does not detect the load collapse on the rear end side in the conveyance direction of the article B conveyed to the article transfer unit 2 by the rear end load collapse sensor 18. Thus, the article B is received from the article transfer unit 2, and the received article B is stored in any of the plurality of storage units 10 in the article storage shelf 1.

  As described above, in this embodiment, the article B can be conveyed from the article transfer unit 2 to the carry-in unit 5 by reversing the conveyance direction of the conveyor 6. Thereby, the goods B can be carried in and out using one conveyor 6, and the carrying-in part 5 is comprised so that the carrying-out part which carries out the goods B from the automatic warehouse 4 may be combined. Therefore, hereinafter, a case where the article B is carried out from the automatic warehouse 4 to the carry-in unit 5 will be described.

  The operation control device operates the stacker crane 3 to take out the article B to be carried out from the storage unit 10 and convey it to the article transfer unit 2. Then, when the article B is conveyed to the article transfer unit 2 by the stacker crane 3, the operation control device operates the conveyor 6 to transfer the article B from the article transfer unit 2 to the carry-in unit 5. At this time, in the article transfer unit 2, the operation control device detects the load collapse on the front end side (the carry-in unit 5 side) in the transport direction for the article B located in the article transfer unit 2 from the detection information of the rear end side load collapse sensor 18. The presence or absence of can be detected. Further, in the carry-in unit 5, the operation control device determines whether or not there is a load collapse on the rear end side (the item transfer unit 2 side) in the transport direction for the article B located in the carry-in unit 5 based on the detection information of the front end side load collapse sensor 17. Can be detected. Further, the operation control device can detect whether or not the height of the article B conveyed by the conveyor 6 is higher than the set height from the detection information of the height detection sensor. And, when the operation control device has an input of conveyance end information indicating that the article B conveyed by the conveyor 6 has reached the carry-in section 5 from the article transfer section 2 by a stock sensor installed in advance, The operation of the conveyor 6 is stopped.

[Another embodiment]
(1) In the above embodiment, the carry-in information is input to the carry-in unit 5 by turning on the carry-in work completion button. For example, the article B is placed in the carry-in unit 5 that is the conveyance start end position H1 of the conveyor 6. A placement sensor for detecting whether or not the article B is placed is provided, and the detection result of the placement sensor indicates that the article B is placed on the carry-in section 5 from the state where the article B is not placed on the carry-in section 5. It can also be configured that the operation control device receives input of carry-in information by changing to the state of being.

(2) In the above embodiment, by reversing the conveying direction of the conveyor 6, the conveyor 6 is used not only for loading but also for unloading, and the loading unit 5 also serves as the unloading unit. However, it is provided with a carry-out part separately from the carry-in part 5, a separate article delivery part with the stacker crane 3, and a conveyor for carrying the article between the separate article delivery part and the carry-out part. Is also possible. In other words, the carry-in unit and the conveyer that conveys articles between the carry-in unit and the article transfer unit are not limited to those that provide a common one, and those that are dedicated for carry-in and those that are dedicated for carry-out are provided separately. be able to.

(3) In the above embodiment, the sensor installation support portions 19 are provided on both sides of the conveyor 6 in the lateral width direction, but the upper connection portions that connect the upper ends of the pair of sensor installation support portions 19 are provided. And a support body for supporting the light projecting portions 17a and 18a and the light receiving portions 17b and 18b in the front end side load collapse sensor 17 and the rear end side load collapse sensor 18 are provided with a pair of sensor installation support portions 19 and an upper connecting portion. It can also be constituted by a sensor support.

1 Goods storage shelf 2 Goods transfer section 3 Goods conveying device (stacker crane)
4 automatic warehouse 5 carry-in part 6 conveyor 16 conveyor body 17 front end side load collapse sensor 17a front end side light projecting part 17b front end side light receiving part 18 rear end side load collapse sensor 18a rear end side light projecting part 18b rear end side light receiving part 19 sensor Installation support portions 21a and 21b Height detection sensor B Article H1 Transport start position H2 Transport end position

Claims (5)

A conveyor device comprising a conveyor main body that conveys an article from a conveyance start end position to a conveyance end position, and a load collapse detection means that detects load collapse of the article conveyed by the conveyor body,
As the load collapse detection means, a front end side load collapse sensor for detecting a load collapse on the front end side in the transport direction by the conveyor body with respect to an article located at the transport start end position, and an article located at the transport end position And a rear end side load collapse sensor different from the front end side load collapse sensor for detecting the load collapse on the rear end side in the conveying direction .
The conveyor device in which the front end side load collapse sensor and the rear end side load collapse sensor are provided at different positions in the conveying direction of the conveyor body .   The front-end-side load collapse sensor and the rear-end-side load collapse sensor project a light for projecting detection light along a width direction of the conveyor body, and the detection light projected by the light projecting portion. A light projecting / receiving sensor provided with a light receiving part for receiving light, the light projecting part of the front end side load collapse sensor, a pair of support parts for supporting the light receiving part, and the light projecting part of the rear end side load collapse sensor The conveyor device according to claim 1, wherein the pair of support portions that support the light receiving portion are configured by a pair of sensor installation support portions that are respectively installed at both ends in the width direction of the conveyor body. .   The conveyor according to claim 2, further comprising a height detection sensor that detects whether or not the height of the article is higher than a set height, wherein the height detection sensor is supported by the sensor installation support portion. apparatus.   The conveyor body has an article carry-in portion to an automatic warehouse provided with an article storage shelf and an article conveyance device that conveys the article between the article storage shelf and the article transfer unit, and the article conveyance device. The conveyor apparatus according to any one of claims 1 to 3, wherein the article transfer section is disposed as the conveyance end position.   The installation interval between the front end side load collapse sensor and the rear end side load collapse sensor in the transport direction is set to be smaller than the total length of the article in the transport direction. The conveyor apparatus as described in a term.

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