JP7230359B2 - Tableware collection system and lifting device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a tableware collection system and a lifting device.

In recent years, securing workers has become socially difficult, and even in restaurants, for example, automatic machines such as conveyors that transport used tableware from the customer seats to the kitchen are widespread (for example, patent See Document 1-2).

JP 2013-018571 A JP 2009-131292 A

As a form of a device for transporting used tableware in a store, for example, a bus box containing tableware is placed on a belt conveyor that extends along the boundary between the area where the seats are lined up and the kitchen area. There are various forms such as one where the tableware is directly placed on the conveyor belt installed along the audience seats and transported, and one where the tableware is thrown into the water channel provided along the audience seats and transported by the water flow. However, in the case of a form in which tableware is directly placed on a conveyor belt provided along the audience seats and conveyed, the tableware cannot be placed on the belt all at once. Further, in the case of the latter form using water flow, it is necessary to throw the tableware into the water channel little by little in order to prevent clogging of the water channel with the tableware.

Therefore, as a measure to save the labor of transporting the dishes from the audience seats to the kitchen while allowing the used dishes left in the audience seats to be quickly cleaned up, the dishes are thrown into the above-mentioned so-called bus box, a container with an open top. , the container may be transported by a belt conveyor installed in the store. When installing such a belt conveyor in a store, the transportation surface on which the bus box is placed must be limited due to various reasons such as sanitation, beauty of the store, convenience of space with other equipment installed in the store, and other reasons. Designed to be relatively close to the floor. Therefore, when washing the tableware in the bus box that has arrived at the end of the belt conveyor, it is necessary to lift the bus box from the belt conveyor.

However, as described above, it is becoming difficult to secure workers in recent years, so it is desired to automate the work of lifting bus boxes that have arrived at the end of the belt conveyor. Therefore, it is conceivable to provide an elevating device for lifting the bus box at the end of the belt conveyor. However, there are cases where a plurality of bus boxes are placed on the conveying path of a belt conveyor that conveys used tableware by bus boxes. When a plurality of bus boxes are placed on the conveying path of a belt conveyor provided with a lifting device at its end, the bus boxes closest to the end of the belt conveyor are transferred to the lifting device in order.

Also, bus boxes containing used tableware may be placed discretely at a plurality of locations on the conveying path of the belt conveyor. However, the belt conveyor cannot be actuated until the terminal bus box is removed from the conveying path. Therefore, in the belt conveyor provided with the lifting device at the terminal end, the belt cannot be operated unless the bus box located at the terminal end of the belt conveyor is transferred to the lifting device. Therefore, if the bus boxes are placed discretely at a plurality of locations on the conveying path, some bus boxes may take a relatively long time to reach the end of the belt conveyor. Therefore, a stopper is provided at the end of the belt conveyor, and when the bus box cannot be transferred to the lifting device, the belt conveyor is operated while the stopper prevents the bus box from advancing, and the bus box is dispersed at multiple points on the conveying path. It is conceivable to collect the bus boxes placed on the target at the end side of the belt conveyor. In this case, the stopper is moved in and out on the conveying path between the terminal end of the belt conveyor and the lifting device.

By the way, in order to transfer the bus box at the end of the belt conveyor to the lifting device, it is necessary to apply force in the traveling direction to the bus box. As one of the methods, for example, operating a belt conveyor is conceivable. However, as described above, when the belt conveyor is operated with a plurality of bus boxes gathered at the terminal end of the belt conveyor, the bus boxes move from the belt conveyor side to the lifting device side without gaps. Therefore, it is difficult to separate the bus box to be transferred to the lifting device from the bus box to be kept waiting in front of the lifting device. Also, in order to keep moving the belt conveyor on which the bus box whose progress has been stopped by the stopper is placed, a force large enough to counteract the frictional force generated between the bottom surface of the bus box and the conveying surface of the belt conveyor is required. The drive part of the belt conveyor needs to be effective, and there is a risk that the size of the drive part will be increased.

Therefore, for example, one or a plurality of rollers are provided between the end of the belt conveyor and the lifting device, and the bus box whose movement is stopped by the stopper is supported by these rollers. can be considered. However, in such a form, even if the stopper is retracted from the conveying path and the belt conveyor is operated in order to transfer the bus box that has been stopped by the stopper to the lifting device, the bus box will not move on the rollers. There is a risk that the bus box will stop at the top, and the bus box will not be transferred to the lifting device.

Therefore, the present invention is designed to allow containers placed discretely at multiple locations on a conveying path to be gathered together at the terminal end of the belt conveyor, while allowing them to smoothly ride from the belt conveyor to a lifting device provided at the terminal end of the belt conveyor. Disclosed is a transferable dish collection system and lifting device.

In order to solve the above problems, in the present invention, a lifting device is provided for lifting and lowering the container drawn out from the belt conveyor on which the container that can be loaded with tableware is placed on the lifting part, and is extended to the end of the belt conveyor. At least one roller of the group of rollers was used as a driving roller.

Specifically, the present invention is a tableware collection system, which includes a belt conveyor on which containers that can be loaded with tableware are placed, and a belt conveyor installed at the terminal end of the belt conveyor, where the containers delivered from the belt conveyor are transferred. An elevating device for elevating an elevating unit, and a roller group extending from the terminal end of a belt conveyor and capable of supporting a container that is let out from the belt conveyor and transferred to the elevating unit, wherein the roller group has the roller group. At least one of the rollers includes a drive roller that rotates so that containers unwound from the conveyor belt advance in the direction of travel.

Here, the terminal end of the belt conveyor means a region near the end of the conveying path formed by the belt conveyor in the direction of travel. is not limited to the part of In addition, "elevation" means that at least one of elevation and descent is possible.

In the tableware collection system described above, since the lifting device is provided on the end side of the belt conveyor, the staff can lift the container without lowering the upper body. Therefore, compared to the case of lowering the upper body and lifting the container, it is possible to reduce the burden on the staff who cleans the used tableware placed in the container. In addition, since the lifted container can be taken out at a higher height, the workability is improved, and the container can be processed more quickly.

In the tableware collection system described above, since the used tableware is put into the container and conveyed by the belt conveyor, the tableware can be collectively conveyed. In addition, since the tableware collection system described above transports the used tableware by a belt conveyor, it is possible to quickly clean up the used tableware and save the work of transporting the tableware.

In the tableware collection system, at least one of the plurality of rollers extending from the end of the belt conveyor is a driving roller. Containers closest to the lifting device can be transferred one by one to the lifting unit of the lifting device. Therefore, with the tableware collection system described above, the containers placed discretely at a plurality of locations on the conveying path can be brought together at the terminal end of the belt conveyor, while the containers are moved to the lifting device provided at the terminal end of the belt conveyor. It is possible to smoothly transfer the container from the belt conveyor.

The roller group has a plurality of free-rotating idle rollers arranged in order from the terminal end of the belt conveyor, and a drive roller arranged closer to the lifting device than the plurality of idle-rotating rollers. may A tableware collection system having such a roller group makes it easy to separate the containers on the belt conveyor from the containers unwound from the belt conveyor and moved by the drive rollers.

Further, the apparatus may further include a stopper inserting/removing device which is disposed between the belt conveyor and the lifting section and inserts/removes the stopper onto the course of the container drawn out from the belt conveyor. With such a tableware collection system, the belt conveyor can continue to operate while the containers are prevented from entering the lifting device by the stopper. Even in this case, the containers can be brought together at the terminal end of the belt conveyor.

Further, in the tableware collection system, when there is a container at the end of the belt conveyor but no container at the lifting section, the belt conveyor and the drive roller are operated to transfer the container at the end of the belt conveyor to the lifting section. After that, the lifting device may further include a control device for lifting the lifting section. In the tableware collection system provided with such a control device, the containers at the terminal end of the belt conveyor can be sequentially lifted to the top of the lifting device by the lifting portion.

Further, the lifting device has an optical sensor that detects the presence or absence of an object by sensor light that crosses the upper part of the space in which the lifting unit moves up and down. When the optical sensor detects the object, the lifting unit stops moving up. may be In the tableware collection system equipped with such a lifting device, even when various large and small containers with different depths are used, the height of the opening at the upper end of the container when it is raised above the lifting device can be constant regardless of the depth of the container.

Further, the belt conveyor can convey the container in both directions of one end side and the other end side, and the lifting devices may be provided on both end sides of the belt conveyor. With such a tableware collection system, the staff can lift the container without lowering the upper body at either end of the belt conveyor.

Further, the present invention is, for example, a lifting device installed at the terminal end of a belt conveyor on which a container into which tableware can be put is placed, comprising: It may be provided with an elevating unit for elevating and a driving roller that supports the container delivered from the belt conveyor and transferred to the elevating part and rotates so that the container delivered from the belt conveyor advances in the traveling direction.

With the tableware collection system and the lifting device described above, the containers placed discretely at a plurality of locations on the conveying path can be brought together at the end side of the belt conveyor, and the lifting device provided at the end side of the belt conveyor. It is possible to transfer smoothly from the belt conveyor.

FIG. 1 is a side view of the tray setting system according to the embodiment. FIG. 2 is a diagram showing the lowering tray system according to the embodiment from above. FIG. 3 is an enlarged perspective view showing the vicinity of the terminal end of the conveying device and the lifting device. FIG. 4 is an internal structural diagram showing the vicinity of the terminal end of the conveying device and the lifting device in an enlarged manner. FIG. 5 is a diagram showing a flowchart of processing realized by a control device that controls the transport device and the lifting device. FIG. 6 is a first diagram showing an example of movement of the bus box realized in the lowering system. FIG. 7 is a second diagram showing an example of movement of the bus box realized in the lowering system. FIG. 8 is a diagram showing a comparison of work performed by the staff to lift the bus box.

Embodiments of the present invention will be described below. The embodiments shown below are aspects of the present invention, and do not limit the technical scope of the present invention. Each of the embodiments and modifications shown below is suitable for, for example, restaurants serving various food and drink such as sushi, beverages, rice bowls such as soba and udon, fried chicken and tempura.

FIG. 1 is a side view of a table setting system 1 according to an embodiment (an example of the "tableware collection system" referred to in the present application). Moreover, FIG. 2 is the figure which showed the lower tray system 1 which concerns on embodiment from upper direction. The lower tray system 1 is a system for transporting used tableware in a restaurant, and a transport device 4 forming a transport path extending along a wall W at the boundary between an area where the seats 2 are arranged and a kitchen area. and a lifting device 5 at the end of the transport device 4 in the kitchen 3 . The tray system 1 also has a control device (not shown) that controls the conveying device 4 and the lifting device 5 . The conveying device 4 of the lower tray system 1 is arranged so as not to interfere with the ordered food conveying device 30 that conveys the food prepared in the kitchen 3 to each customer seat 2 and the food conveying device that circulates and conveys the food. It is installed below the food and drink conveying device.

In this embodiment, a case where used tableware is transported in a bath box 6 (which is an example of the "container" referred to in the present application) will be described as an example. Instead of the bus box 6, it is also possible to use thin plate-like trays and various other types of containers to transport tableware. Further, in the present embodiment, a case in which the conveying device 4 forms a linear conveying path will be described as an example. It may form a conveying path.

In a store where the lower table system 1 is installed, the used tableware left on the customer's seat 2 after the customer finishes eating and drinking is thrown into the bus box 6, and the bus box 6 is transported through the opening H provided in the wall W. It is placed on the device 4 and transported by the transport device 4 . The transport device 4 is designed so that the transport surface of the transport device 4 is relatively close to the floor so that the bus box 6 can be easily placed thereon. Therefore, in an area where the audience seats 2 are arranged, the bus box 6 can be easily placed on the carrier device 4. - 特許庁In addition, since the lifting device 5 is provided at the end of the transporting device 4 , the bus box 6 transported to the transporting device 4 whose transport surface is positioned relatively close to the floor is lifted by the lifting device 5 at the end of the transporting device 4 . , it is lifted by the lifting device 5. Therefore, the staff 7 in the kitchen 3 can lift the bus box 6 transported by the transport device 4 to a position higher than the transport surface of the transport device 4 .

FIG. 3 is an enlarged perspective view showing the vicinity of the end of the conveying device 4 and the lifting device 5. As shown in FIG. Moreover, FIG. 4 is an internal structural diagram showing the vicinity of the end of the conveying device 4 and the lifting device 5 in an enlarged manner.

First, the conveying device 4 will be described. Most of the conveying device 4 is omitted in FIG. 3, but as can be seen from the portion partially illustrated in FIG. It has a conveyor 8 . The belt conveyor 8 is a device having a ring-shaped wide belt and a motor (not shown) for driving the belt. The transport device 4 also has a sensor 10 for detecting the presence or absence of an object placed on the belt conveyor 8 near the end of the transport path formed by the belt conveyor 8 . In addition, the conveying device 4 extends to the end of the conveying path formed by the belt conveyor 8, and has five idle rollers 9 capable of supporting the bus box 6 delivered from the belt conveyer 8 and transferred to the lifting device 5. have. In addition, the conveying device 4 has a guide plate 13 that defines the course of the bus box 6 that is delivered from the belt conveyor 8 and transferred to the lifting device 5. The guide plate 13 has a smooth peripheral surface and a low-friction idle roller 9 is arranged. on both sides of the

Further, the conveying device 4 is arranged between the belt conveyor 8 and the lifting device 5, and has a stopper 19 to be taken in and out on the course of the bus box 6 fed from the conveying device 4 to the lifting device 5. It has a stopper loading/unloading device 20 that moves up and down. The stopper 19 is put in and taken out from between the fourth idle roller 9 and the fifth idle roller 9 from the belt conveyor 8 side among the five idle rollers 9 . When the stopper loading/unloading device 20 moves the stopper 19 to the upper limit position of the lifting range, the stopper 19 protrudes onto the path of the bus box 6 delivered from the conveying device 4 to the lifting device 5 . Further, when the stopper loading/unloading device 20 moves the stopper 19 to the lower limit position of the lifting range, the stopper 19 is in a state of retreating from the course of the bus box 6 delivered from the conveying device 4 to the lifting device 5 . Therefore, the movement of the bus box 6 delivered from the conveying device 4 to the lifting device 5 is permitted when the stopper 19 is at the lower limit position, and is prevented by the stopper 19 when the stopper 19 is at the upper limit position.

Next, the lifting device 5 will be described. The elevating device 5 has an elevating plate portion 15 (an example of the “elevating portion” referred to in the present application) that lifts and lowers the bus box 6 thereon. The elevating plate portion 15 has fitting portions (not shown) fitted in the guide grooves 14 extending in the vertical direction near the four corners, and moves up and down along the track of the guide grooves 14 . The elevating plate portion 15 has a rectangular frame 16 when viewed from above, and idle rollers 17 arranged on the frame 16 . The idle rollers 17 are arranged so as to gradually descend from the transport device 4 side toward the opposite side thereof, and substantially form a slightly inclined mounting surface. Therefore, the bus box 6 transferred from the conveying device 4 to the lifting plate portion 15 is held while being placed on the lifting plate portion 15 . The lifting device 5 also includes a sensor 12 for detecting the presence or absence of an object placed on the lifting plate portion 15 when the lifting plate portion 15 is at the lower limit position of the lifting range, and a sensor 12 for detecting the presence or absence of an object placed on the lifting plate portion 15. and a sensor 11 for detecting the presence or absence of an object placed on the lifting plate portion 15 in a state of being in position.

In addition, the lifting device 5 has a lifting unit 21 that lifts and lowers the lifting plate portion 15 . The elevating unit 21 is provided below the elevating plate portion 15, and is lifted and lowered so as to push the elevating unit 21 upward. The lifting unit 21 has two engaging chains 23 and a chain drive section 22 for extending and lowering the engaging chains 23 upward. The meshing chain 23 is a chain that maintains a rod-like shape when meshed with each other. The chain drive unit 22 incorporates a motor and a speed change mechanism, and feeds the two mesh chains 23 upward while being meshed with each other, and releases the mesh of the two mesh chains 23. Each can be extended in different directions to the left and right. In addition, the lifting device 5 is not limited to a form using two mesh chains 23, and may be a form using other mechanisms such as a ball screw and an air cylinder.

A processing flow executed by the control device of the lowering tray system 1 will be described below. FIG. 5 is a diagram showing a flowchart of processing realized by a control device that controls the conveying device 4 and the lifting device 5. As shown in FIG. When the control device detects that the operation button installed near the opening H of the area where the audience seats 2 are arranged is operated to start the transportation, the control device activates the belt conveyor 8 . Then, the control device determines whether an object is detected by the sensor 10 at the end of the belt conveyor 8 (S101).

For example, after used tableware is thrown into the bus box 6 at one of the seats 2, when the bus box 6 is placed on the belt conveyor 8 and the conveying device 4 is activated, the bus box 6 will soon reach the sensor 10. Arrive at the designated area. When the bus box 6 reaches the site where the sensor 10 is provided, the sensor 10 detects the bus box 6, so a positive determination is made in step S101.

When the control device makes an affirmative determination in step S101, next it determines whether or not the lifting device 5 is on standby (S102). When the lifting plate portion 15 of the lifting device 5 is at the lower limit position of the movable range and the sensor 12 does not detect an object, the control device makes an affirmative determination in step S102.

When the control device makes an affirmative determination in step S102, next, the stopper loading/unloading device 20 moves the stopper 19 to lower it to the lower limit position of the movable range (S103). When the stopper 19 descends to the lower limit position of the movable range, the bus box 6 can pass over the idle roller 9 .

Next, the control device operates the belt conveyor 8 and the drive roller 18 (S104). When the belt conveyor 8 and the drive roller 18 are operated, the bus box 6 placed on the belt conveyor 8 is transferred from the belt conveyor 8 to the lift plate portion 15 via the idle rollers 9 . The bus box 6 transferred from the belt conveyor 8 to the drive roller 18 continues to receive the rotational force of the drive roller 18 even after leaving the belt conveyor 8, and moves onto the lifting plate part 15.例文帳に追加Then, when the bus box 6 is transferred to the lifting plate portion 15 and separated from the drive roller 18 , it stops on the lifting plate portion 15 .

The control device determines whether an object is detected by the sensor 12 at the bottom of the lifting device 5 (S105). Then, when the sensor 12 detects the bus box 6 as the bus box 6 moves from the belt conveyor 8 to the lifting plate portion 15, the control device makes an affirmative determination in step S105.

When the control device makes an affirmative determination in step S105, the chain drive unit 22 moves the lifting plate unit 15 to the upper limit position of the movable range, and the stopper loading/unloading device 20 raises the stopper 19 to the upper limit position of the movable range. (S106). When the stopper 19 rises to the upper limit position of the movable range, the bus box 6 cannot pass over the idle roller 9. - 特許庁Further, when the lifting plate portion 15 is lifted to the upper limit position of the movable range, the bus box 6 placed on the lifting plate portion 15 reaches the top of the lifting device 5 . Therefore, the staff 7 can lift the bus box 6 that has reached the top of the lifting device 5 without lowering the upper body.

After causing the chain driving section 22 to lift the lifting plate section 15 to the upper limit position of the movable range, the control device determines whether or not the sensor 11 above the lifting device 5 detects an object (S107). . The sensor 11 detects the bus box 6 when the lift plate portion 15 is at the upper limit position of the movable range and the bus box 6 is placed on the lift plate portion 15 . Further, when the bus box 6 is lifted from the lifting plate portion 15 and is not placed on the lifting plate portion 15 , the sensor 11 does not detect the bus box 6 . Therefore, in step S107, the sensor 11 continues to detect the bus box 6 while the bus box 6 is placed on the sensor 11, so the control device makes an affirmative determination. Then, in step S107, when the bus box 6 is lifted from the sensor 11, the sensor 11 no longer detects the bus box 6, so the control device makes a negative determination.

After making a negative determination in step S107, the control device causes the chain driving section 22 to lower the lifting plate section 15 to the lower limit position of the movable range (S108). If the lifting plate portion 15 reaches the lower limit position of the movable range and the sensor 12 does not detect any article, the lifting device 5 is in a state capable of receiving the bus box 6, as described in the explanation of step S102 above. That is, it is in a standby state.

An example of movement of the bus box 6 realized by the control device of the lower tray system 1 executing the above-described series of processing flows is shown below. FIG. 6 is a first diagram showing an example of movement of the bus box 6 realized in the lowering table system 1. FIG. Also, FIG. 7 is a second diagram showing an example of the movement of the bus box 6 realized in the lowering tray system 1. As shown in FIG.

For example, when used tableware is thrown into the bus box 6 at a plurality of seats 2 and a plurality of bus boxes 6 are continuously or discretely placed on the belt conveyor 8 through the openings H at a plurality of locations, these plurality of When the belt conveyor 8 on which the bus boxes 6 are placed operates, a plurality of bus boxes 6 are arranged in a row at the terminal end of the belt conveyor 8 (see FIGS. 6A and 7A). Then, since the sensor 10 at the end of the belt conveyor 8 detects the bus box 6, an affirmative determination is made in step S101 described above.

If an affirmative determination is made in step S102 after an affirmative determination is made in step S101 described above, step S103 is executed and the stopper 19 is lowered to the lower limit position of the movable range. Therefore, the bus box 6 can pass over the idle roller 9, and step S104 is subsequently executed to operate the belt conveyor 8 and the driving roller 18, thereby allowing the bus box 6 to idle from the belt conveyor 8. It moves toward the lifting plate portion 15 via above the rollers 9 (see FIGS. 6B and 7B). At this time, the belt conveyor 8 is stopped at an appropriate timing while the drive roller 18 is operating, so that the bus box 6 placed closest to the lifting device 5 among the plurality of bus boxes 6 placed in a row on the belt conveyor 8 is placed. The existing bus box 6 gradually separates from the adjacent bus box 6 and moves onto the lift plate portion 15 (see FIGS. 6(C) and 7(C)). Then, when the bus box 6 is transferred to the lifting plate portion 15 and separated from the drive roller 18 , it stops on the lifting plate portion 15 .

When the sensor 12 detects that the bus box 6 has moved from the belt conveyor 8 to the lifting plate portion 15 and the process of step S105 is executed, and the stopper 19 reaches the upper limit position of the movable range, the bus box 6 is placed on the belt conveyor 8. The stopper 19 protrudes into the course of the bus box 6, and the bus box 6 cannot pass over the idle roller 9 (see FIGS. 6(D) and 7(D)). . Then, the bus box 6 placed on the lifting plate portion 15 reaches the top of the lifting device 5 by executing the process of step S106 described above and moving the lifting plate portion 15 to the upper limit position of the movable range.

Since the set table system 1 according to the present embodiment has a form in which used tableware is put into the bus box 6 and is transported from the customer seats 2 to the kitchen 3 by the belt conveyor 8, the tableware can be transported collectively. can be done. In addition, the lowering tray system 1 according to the present embodiment is in the form of conveying the used tableware by the belt conveyor 8. Similarly, it is not necessary to throw dishes into the water channel little by little in order to prevent clogging of the water channel. That is, with the lowering tray system 1 according to the present embodiment, it is possible to quickly clean up the used tableware remaining on the customer's seat, and at the same time, it is possible to save labor for carrying the tableware from the customer's seat 2 to the kitchen 3.

In addition, since the lowering table system 1 according to the present embodiment is provided with the lifting device 5, for example, for hygiene reasons, the beauty of the store, the space with other equipment installed in the store, etc. For various reasons, even if the carrier device 4 is designed so that the carrier surface on which the bus box 6 is placed is relatively close to the floor, the work of lifting the bus box 6 from such a low position is unnecessary.

Further, in the lowering tray system 1 according to the present embodiment, a plurality of idle rollers 9 are provided extending from the terminal end of the belt conveyor 8, and the drive roller 18 is moved to the belt so as to sandwich the idle roller 9 group. Since it extends to the terminal end of the conveyor 8, by stopping the belt conveyor 8 while the drive roller 18 is still operating, or by operating the drive roller 18 at a faster speed than the belt conveyor 8, Even if the bus boxes 6 are connected on the belt conveyor 8, the bus box 6 closest to the lifting device 5 can be separated from the other bus boxes 6. - 特許庁Therefore, in the lower tray system 1 of the present embodiment, for example, when customers leave the seats 2 at a plurality of locations at the same time, the bus boxes 6 into which the used dishes have been thrown are placed on the conveying surface of the belt conveyor 8. , the bus box 6 placed on the belt conveyor 8 is pushed toward the lifting device 5 or the belt conveyor 8 is operated. As shown in FIGS. 6A and 7A, the bus boxes 6 placed discretely on the belt conveyor 8 can be brought into contact with the stopper 19 at the end of the belt conveyor 8 and collected. . A plurality of bus boxes 6 gathered at the end of the belt conveyor 8 and connected without gaps are separated from other bus boxes 6 one by one in order from the bus box 6 closest to the lifting device 5, and the lifting plate portion of the lifting device 5 is arranged. 15 and can be lifted to the upper part of the lifting device 5 .

Further, in the lowering tray system 1 of the above-described embodiment, the stopper 19 protrudes from between adjacent belt conveyors 8 among the plurality of idle rollers 9 extending at the end of the belt conveyor 8. Even if the belt conveyor 8 continues to operate while the movement of the bus box 6 is impeded by the stopper 19, the idle roller 9 of the bottom surface of the bus box 6 in contact with the stopper 19 will As for the supported portion, no frictional force occurs between the bottom surface of the bus box 6 and the conveying surface of the belt conveyor 8. Therefore, for example, when the stopper 19 is provided at the end of the belt conveyor 8 , even if it is desired to keep the belt conveyor 8 operating against the frictional force generated between the bottom surface of the bus box 6 and the conveying surface of the bus box 6, the driving force of the belt conveyor 8 is large. can be reduced. Therefore, it is possible to suppress the possibility that the size of the driving portion of the belt conveyor 8 will be increased.

FIG. 8 is a diagram showing a comparison of the work of lifting the bus box 6 by the staff 7. As shown in FIG. The comparative example shown in FIG. 8 is a lowering tray system 101 in which the lifting device 5 and the idle roller 9 are omitted from the lowering tray system 1 and provided with a conveying device 104 having a belt conveyor 108 corresponding to the belt conveyor 8. . Since the lowering table system 101 according to the comparative example does not have a device corresponding to the lifting device 5, the staff 7 does not have to lower the upper body when lifting the bus box 6 placed on the belt conveyor 108. be. On the other hand, as can be seen by comparing the embodiment and the comparative example shown in FIG. The bus box 6 can be lifted. Therefore, in the case of the embodiment, compared to the comparative example, it is possible to reduce the burden on the staff 7 who perform the task of washing the used tableware placed in the bath box 6 .

In the above-described embodiment, the transport device 4 forms a transport path extending along the wall W. It is also possible to form a transport path from the audience seats 2 to the kitchen 3 . In the above-described embodiment, the tableware of each audience seat 2 is put in the bus box 6 and transported. You may classify and use for every kind of thing to store, such as.

Further, in the lowering table system 1 of the above embodiment, the lifting plate portion 15 is stopped at the upper limit position. good too. As long as the lift plate portion 15 stops rising when an object is detected by the sensor 11, the lifting device 5 can be lifted even if various sizes of bus boxes 6 with different depths are used. The height of the opening at the upper end of the bus box 6 can be made constant regardless of the depth of the bus box 6 when it is lifted upward.

In addition, in the lower tray system 1 of the above-described embodiment, the lifting device 5 is provided on the end side of the conveying device 4, but in the lower tray system 1, for example, the conveying device 4 can operate in both directions, The form which provided the raising/lowering apparatus 5 in the both end sides of the conveying apparatus 4 may be sufficient. If the table setting system 1 has such a form, the staff 7 can lift the bus box 6 at either end of the belt conveyor 8 without lowering the upper body.

W...Wall H...Opening 1, 101...Lowering table system 2...Audience seat 3...Kitchen 4, 104...Conveying device 5...Elevating device 6...Bus box 7...Staff 8, 108... Belt conveyor 9 Idle rollers 10, 11, 12 Sensor 13 Guide plate 14 Guide groove 15 Elevating plate portion 16 Frame 17 Idle roller 18 Drive roller 19 Stopper 20 Stopper loading/unloading device 21 Elevating unit 22 Chain driving unit 23 Meshing chain 30 Ordered food conveying device

Claims (6)

a belt conveyor on which containers into which tableware can be put are placed;
an elevating device that is installed on the end side of the belt conveyor and raises and lowers an elevating unit on which a container fed out from the belt conveyor is transferred;
a group of rollers extending from the terminal end of the belt conveyor and capable of supporting a container delivered from the belt conveyor and transferred to the lifting unit;
a stopper loading/unloading device that is disposed between the belt conveyor and the lifting unit and moves the stopper into and out of the path of the container unwound from the belt conveyor;
The roller group has at least one of the rollers included in the roller group, and has a drive roller that rotates so that the container fed out from the belt conveyor advances in the traveling direction.
tableware collection system. The roller group is
a plurality of idle rollers arranged in order from the terminal end of the belt conveyor;
and the driving roller arranged closer to the lifting device than the plurality of idle rollers,
The tableware collection system according to claim 1. When there is a container at the end of the belt conveyor and no container at the lifting section, after operating the belt conveyor and the drive roller to transfer the container at the end of the belt conveyor to the lifting section, Further comprising a control device for raising the lifting unit in the lifting device,
The tableware collection system according to claim 1 or 2 . The elevating device has an optical sensor that detects the presence or absence of an object by sensor light that crosses the upper part of the space in which the elevating unit ascends and descends. When the optical sensor detects an object, the elevating unit stops ascending. do,
The tableware collection system according to any one of claims 1 to 3 . The belt conveyor can convey the container in both directions of one end side and the other end side,
The lifting devices are provided on both end sides of the belt conveyor,
The tableware collection system according to any one of claims 1 to 4 . A lifting device installed on the end side of a belt conveyor on which a container capable of throwing tableware is placed,
an elevating unit on which the container fed out from the belt conveyor is transferred;
an elevating unit that elevates the elevating unit;
a driving roller that supports a container delivered from the belt conveyor and transferred to the lifting unit and rotates so that the container delivered from the belt conveyor advances in the traveling direction;
a stopper loading/unloading device that is disposed between the belt conveyor and the lifting unit and moves the stopper into and out of the path of the container unwound from the belt conveyor;
lift device.

Images