JP3064906U - Automatic tray cleaning device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide an automatic tray cleaning apparatus capable of reducing the labor cost by increasing the efficiency of operations such as cleaning and drying of the tray without labor and by sufficient labor saving. SOLUTION: An automatic supply unit 12 for automatically taking out one by one from a used stacked lowermost tray 11 having flat edge portions 17 and 18 on both sides, and a cleaning liquid on at least the upper surface of the tray 11 are provided. A cleaning unit 13 having cleaning means 74 for cleaning the tray 11 while spraying water, and spraying nozzles 75 and 76 for spraying fresh water on the upper and lower surfaces of the tray 11 after cleaning by the cleaning means 74 for final cleaning; Wind blow means 85, 8 for blowing hot or cold air on the upper and lower surfaces
6 for draining and drying the tray 11
The drying unit 14 and the automatic stacking unit 15 for automatically stacking the trays 11 from below are sequentially connected by a chain conveyor 16 provided with an intermittent conveying unit.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to an automatic tray cleaning apparatus for intermittently cleaning and drying used stacked trays used in restaurants and the like, and stacking and reusing the stacked trays.

[0002]

[Prior art]

 2. Description of the Related Art Conventionally, as a method of cleaning a used tray in a restaurant (mainly a fast food store such as a hamburger shop), there is the following method. (1) Manually wash the trays one by one with a damp cloth, and then wipe off the moisture adhering to the tray with a dry or well squeezed cloth. (2) Each tray is immersed in the washing container one by one to remove the deposits, then taken out of the washing container and squeezed or wiped off with a dry cloth. (3) A large number of trays are automatically washed using a dishwashing / drying device. As this apparatus, there are known a means for supplying trays to the washing / drying section of the apparatus, a) a type for supplying trays one by one, and b) a type for supplying a plurality of sheets at a time.

[0003]

[Problems to be solved by the invention]

 However, the conventional tray cleaning method has the following problems to be solved. In the methods (1) and (2), since specialized labor is required, labor saving is required to improve work efficiency and reduce labor costs. In addition, the method (3) seems to have an effect of labor saving because it is automated at first glance, but in the case of a), the operator needs to supply the trays one by one. In the case of b), there is a problem in that the tray cannot be left, and the tray is replaced (or replaced) periodically after a certain period of time (time determined in advance by a timer, etc.). Therefore, when a large number of trays are used, such as in a fast food restaurant, labor saving has not been achieved.

[0004] The present invention has been made in view of such circumstances, and aims to reduce the labor costs by increasing the efficiency of operations such as cleaning and drying trays without using specialized labor and by sufficient labor saving. It is an object of the present invention to provide a tray automatic cleaning device capable of reducing the number of trays.

[0005]

[Means for Solving the Problems]

 The automatic tray cleaning apparatus according to the present invention, which meets the above-mentioned object, has an automatic supply system in which used trays having flat edges on both sides are stacked and arranged, and one tray is automatically taken out from the lowermost tray. Cleaning means for washing the tray while spraying the cleaning liquid on at least the upper surface of the tray and the tray taken out by the automatic supply unit, and final cleaning by spraying fresh water on the upper and lower surfaces of the tray after cleaning by the cleaning means. A washing unit equipped with a spray nozzle, and a wind blower for blowing hot or cold air onto the upper and lower surfaces of the tray washed by the washing unit, and a drainer / dryer for draining and drying the tray, and a drainer / dryer An automatic stacking unit that automatically stacks trays that have been drained and dried from the bottom is provided.The automatic feeding unit, washing unit, draining / drying unit, and automatic stacking unit have chains on both sides. In addition, the chains on both sides are sequentially connected by a chain conveyor, which is a space, and the chain conveyor is provided with intermittent transport means, which automatically supplies trays, a washing unit, and a draining / drying unit. , And an automatic stacking unit. Here, the intermittent transport means is a device for driving the chain conveyor, controls the chain conveyor to stop at a specific position for a predetermined time, and also moves the chain conveyor continuously to reduce the speed at the specific position. This includes the case where the control is performed. Further, the cleaning liquid includes not only a liquid containing a chemical and a detergent but also water having no such liquid.

[0006] Thus, while the trays are sequentially and intermittently (including the case where the speed is reduced at this position) intermittently (including the case where the speed is reduced at this position) by the chain conveyor, the trays are stacked. Then, after taking out one by one from a plurality of trays, supplying, washing, draining and drying, each process of stacking on a plurality of stacked trays can be performed continuously and automatically. Here, the automatic supply unit includes supply rotation shafts vertically arranged in pairs on the left and right sides of the stacked trays, respectively, and each of the supply rotation shafts faces the lowermost tray in the stack. Provide a thread on which the edge is placed and only the edge of the lowermost tray is disengaged by the rotation of the supply rotation shaft.The lowermost tray is separated from the tray above it and placed on the chain conveyor. Can also. As a result, only the lowermost tray from the plurality of stacked trays can be reliably and automatically placed on the chain conveyor one by one.

[0007] The automatic stacking section is provided with a pair of tray elevating means for pushing up the tray conveyed by the chain conveyor, and a pair of tray elevating means on both sides of the tray elevating means. It is also possible to provide a pair of left and right fall prevention claws that support the loaded tray and open outward when the tray is raised by the tray lifting / lowering means. This makes it possible to arrange the trays to be stacked below the lowermost stage of the plurality of trays placed on the fall prevention claws, and to automatically reload them on the fall prevention claws. Further, a cover for preventing scattering of the cleaning liquid or fresh water is provided above and on both sides of the cleaning section, and a drainage storage tank for storing and discharging sewage by the cleaning liquid or fresh water is provided below the cleaning section. -The drying section may be provided with a cover to prevent hot or cold air from being blown to the upper and lower surfaces of the tray. Thereby, it is possible to prevent scattering due to sewage and to prevent the emission of hot air or cold air.

[0008]

[Embodiment of the invention]

 Next, embodiments of the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention. Here, FIG. 1 is a front view illustrating the configuration and steps of an automatic tray cleaning apparatus according to an embodiment of the present invention, FIG. 2 is a plan view illustrating the configuration of the automatic tray cleaning apparatus, and FIG. , (B), and (C) are a plan view, a front view, and a side view of a tray used in the automatic tray cleaning apparatus, respectively. FIG. 4 is a front view of an automatic supply unit of the automatic tray cleaning apparatus, and FIG. ) And (B) are an enlarged view and a plan view of a main part of an automatic supply unit of the automatic tray cleaning apparatus, respectively. FIG. 6 is a front view of an automatic stacking unit of the automatic tray cleaning apparatus, and FIG. FIG. 8 is a plan view of the automatic stacking section of the apparatus, FIG. 8 is a side view of the automatic stacking section of the automatic tray cleaning apparatus, and FIG. 9 is an explanatory view of a method of controlling a chain conveyor of the automatic tray cleaning apparatus.

As shown in FIGS. 1 and 2, the automatic tray cleaning apparatus 10 according to one embodiment of the present invention includes an automatic supply unit 12 for automatically cutting out the used trays 11 stacked one by one. A washing unit 13 for washing the tray 11 taken out by the automatic supply unit 12; a draining / drying unit 14 for draining and drying the tray 11 washed by the washing unit 13; An automatic stacking unit 15 for automatically stacking the dried trays 11 is provided. In addition, the automatic feeding unit 12, the washing unit 13, the draining / drying unit 14, and the automatic stacking unit 15 are driven by the intermittent transporting means. Are connected by a chain conveyor 16 that transports Hereinafter, these will be described in detail.

As shown in FIGS. 3A, 3B, and 3C, the tray 11 used in the automatic tray cleaning device 10 has a substantially rectangular shape in plan view, which is handled in a fast food store. At the upper ends of the short sides, trapezoidal edges 17, 18 projecting in the horizontal direction and having a trapezoidal shape in plan view are formed. The feature of this tray 11 is that, even when a plurality of sheets are stacked, the upright state can be maintained in a horizontal plane, and the tray 11 is unlikely to collapse unless stacked obliquely or pushed from the side. As shown in FIG. 4, the trays 11 are arranged in the automatic supply unit 12 in a stacked state.

As shown in FIG. 5, the automatic supply unit 12 of the tray has the bottoms of both flat plate-shaped edges 17 and 18 formed on the short sides of the stacked used trays 11. A pair of supply rotation shafts 24, 25 and 26, 27 each having a thread 20-23 formed on the peripheral surface so as to be able to mount the pair 19, are vertically arranged facing both edges 17, 18. I have. The pair of threads 20, 21 and the pair of threads 22, 23 are formed as reverse threads, and the effective number of threads is about 1.3 to 1.7 as shown in FIG. There. The ends of both edges 17, 18 are placed on the upper surfaces of the threads 20 to 23, and have a gap that can move downward along the threads 20 to 23 with the rotation of the supply rotation shafts 24 to 27. . Therefore, as shown in FIG. 5 (B), the supply rotating shafts 24 to 27 are driven synchronously in the directions of the arrows to separate both edges 17, 18 of the tray 11 from the threads 20 to 23. Thus, only the lowermost tray 11 can be vertically dropped on the chain conveyor 16.

The synchronous drive means 30 for the supply rotation shafts 24 to 27 is configured as shown in FIGS. That is, a mounting base 31 for the automatic supply unit 12 is provided on the upstream side of the chain conveyor 16 of the main body frame 54, and a bevel gear 33 is provided at a tip end of an output shaft of the motor 32 with a speed reducer fixed to the mounting base 31. A supply rotating shaft 27 having a bevel gear 34 meshing with the bevel gear 33 attached to a lower end thereof is provided via bearings 35 and 36 fixed to the mounting base 31. A bevel gear 37 is mounted between the bearings 35 and 36 of the supply rotary shaft 27, and a synchronous shaft 39 having a bevel gear 38 meshing with the bevel gear 37 mounted at one end is fixed to the mounting base 31. 40 and 41 are provided. A bevel gear 42 is attached to the other end of the synchronous shaft 39, and a supply rotating shaft 25 provided with a bevel gear 43 that meshes with the bevel gear 42 is provided via bearings 44 and 45 fixed to the mounting base 31. Have been. Therefore, the supply rotation shafts 27 and 25 can rotate synchronously.

As shown in FIG. 1, a gear 46 is attached to an intermediate portion of the supply rotating shaft 25, meshes with the gear 46, and a gear 47 having the same diameter as the gear 46 is provided at an intermediate portion of the supply rotating shaft 24. It has been. The supply rotating shaft 24 is provided on the mounting base 31 via bearings 48 and 49. Therefore, the supply rotation shafts 25 and 24 can rotate synchronously. The same gears as the gears 46 and 47 provided on the supply rotation shafts 25 and 24 are also attached to the supply rotation shafts 27 and 26, so that the supply rotation shafts 27 and 26 can also rotate synchronously. . Therefore, when the motor 32 with the reduction gear is rotated, the supply rotation shafts 24 to 27 rotate synchronously in the directions indicated by the arrows in FIG. 2 or FIG. 5B, and as shown in FIG. The edge 18 of the tray 11 (same for the edge 17) is guided by the threads 20 to 23 and descends, and the edges 17, 18 fall off the threads 20, 21, 22, 23 and fall. As shown in FIG. 5A, the side end 50 of the edge 18 (same for the edge 17) of the tray 11 is guided by the outer peripheral surface 51 of the supply rotating shaft 27 (same for 24 to 26). It is arranged so that. Reference numerals 119 and 120 in FIG. 1 and FIG. 5 (B) denote, on the chain conveyor 16, one by one from the lowermost tray 11 as well as the loading and positioning of about ten lower trays 11 stacked. It shows a pair of guide plates for guiding the supply of the water, and the upper end part is spread outward as shown in the figure.

As shown in FIG. 1, the chain conveyor 16 is provided on a main body frame 54 mounted on a floor surface 52 via a level adjusting bracket 53. A sprocket wheel 56 is attached to an output shaft of a motor 55 with a reduction gear fixed to the automatic stacking unit 15 side of the main body frame 54. As shown in FIGS. 1 and 2, the sprocket wheel 56 includes a sprocket wheel 60 and a drive chain 28 provided at an intermediate portion of a chain drive shaft 59 attached to the main body frame 54 via bearings 57 and 58. Are connected via At the center of the chain drive shaft 59, a pair of sprocket wheels 61 and 62 are provided. On the side of the automatic supply section 12 of the main body frame 54, there are provided sprocket wheels 66, 67 which are paired with the center of a chain driven shaft 65 mounted via bearings 63, 64.

Endless chains 69 and 70 are wound around the sprocket wheels 61 and 62 and the sprocket wheels 66 and 67 via a tensioning sprocket wheel 68 attached to the center of the main body frame 54. A space is formed between the chains 69 and 70. Therefore, as shown in FIG. 2 and FIG. 4, the tray 11 having both longitudinal ends placed on the upper side of the chains 69 and 70 on the outward path (upper side) is automatically driven by the drive of the motor 55 with the speed reducer. From the supply unit 12 side, it is conveyed to the automatic stacking unit 15 side via the washing unit 13 and the draining / drying unit 14.

As shown in FIG. 9, since the automatic supply position a, the cleaning position b, the draining / drying position c, and the automatic stacking position d are at equal intervals L, the trays 11 at each position are simultaneously placed in the next position. To the processing position. A limit switch 71, which is an example of a sensor, is attached near the automatic supply position a so that the tray 11 that has fallen on the upper surfaces of the chains 69 and 70 can be checked. Furthermore, if the tray 11 can be confirmed by the limit switch 71, the automatic supply unit 12 is controlled so that the next tray 11 cannot be cut out. As shown in FIG. 9, a proximity switch 72, which is an example of a sensor, is mounted above the vicinity of the chain drive shaft 59 of the automatic stacking unit 15, and the chain drive shaft 59 detects the proximity switch 72. Is attached. Accordingly, the proximity switch 72 senses the movement of the sensing lever 73 to stop the motor 55 with the speed reducer, thereby stopping the chains 69 and 70.

The cleaning unit 13 sprays a cleaning liquid (including only a cleaning agent and water) on the upper surface of the tray 11 taken out by the automatic supply unit 12 to clean the tray 11. And spray nozzles 75 and 76 for finally cleaning the upper and lower surfaces of the tray 11 after cleaning with fresh water. Above and on both sides of the washing unit 13, a cover 77 for preventing the washing liquid or fresh water from scattering is provided, and below the washing unit 13, the drainage (sewage) of the washing liquid or fresh water is stored and discharged. A drainage storage tank 78 is provided. A stop valve (not shown) is attached to the lower end of the drainage storage tank 78, and a drainage hose 79 is connected. The cleaning liquid in the drainage storage tank 78 may be circulated and reused. Further, the cleaning means is not limited to the cleaning brush 74, and any other method may be used as long as the tray 11 can be cleaned.

The axis of the cleaning brush 74 is composed of a pipe 80, a large number of small holes are formed in the pipe 80, and a brush (not shown) is implanted in the pipe 80, and the moving direction of the chains 69 and 70 of the chain conveyor 16. An independent drive motor is provided to rotate in the opposite direction. Accordingly, the upper surface of the tray 11 can be cleaned while spraying the agent such as a detergent or water having no influence on the human body or the water from the small holes onto the upper surface of the tray 11 to be transported. When the tray 11 passes through the cleaning brush 74, the chain conveyor 16 is controlled so as not to decelerate or stop. Depending on the situation, the cleaning brush may be of a fixed type that does not rotate.

The spray nozzles 75 and 76 include watering pipes 81 and 82 and a plurality of nozzle bodies 83 and 84 attached to the watering pipes 81 and 82, respectively. It is designed to be sprayed on the upper and lower surfaces. Instead of providing the nozzle bodies 83 and 84 on the watering pipes 81 and 82, a plurality of small holes may be formed in the watering pipes to form the injection nozzle. The draining / drying unit 14 is provided with air blowing means 85 and 86 for blowing hot or cold air onto the upper and lower surfaces of the tray 11 washed by the washing unit 13, and the upper and lower surfaces of the tray 11 are blown by the air blowing means 85 and 86. Dispersion prevention covers 87 and 88 are provided to prevent the warm air or the cool air blown to the air. The air blowing means 85 and 86 have slit-shaped outlets 91 and 92 in hot air ducts (or cold air ducts) 89 and 90 which are connected to ducts connected to a hot air or cold air source (not shown). The tray 11 is drained and dried by blowing hot or cold air on the upper and lower surfaces of the tray 11 for several seconds to several tens of seconds by operating a blower attached in the middle of the duct. Can be.

As shown in FIGS. 6 and 7, the automatic stacking unit 15 has a pair of fall prevention claws 93 and 94 that can support the bottom 19 of both edges 17 and 18 of the tray 11. The plate-shaped fall prevention claws 93 and 94 are rotatably mounted on pins 97 and 98 via brackets 95 and 96 formed in the main body frame 54 in a concave shape in plan view. As shown in FIG. 6, projections 99 and 100 are formed on the inside of the upper ends of the fall prevention claws 93 and 94, and the lower surfaces of the projections 99 and 100 are curved toward the center. It has become. The lower ends of the fall prevention claws 93 and 94 and the main body frame 54 are connected by a coil spring 101 which is an example of an elastic member. Are held at the vertical positions indicated by the solid lines (in which the protruding portions 99 and 100 are urged inward). Also, when the protruding portions 99, 100 of the fall prevention claws 93, 94 are pushed up against the urging force of the coil spring 101, the fall prevention claws 93, 94 rotate to the position shown by the two-dot chain line. It can be opened outward, and when it is released, it can return to the vertical position shown by the solid line again.

The automatic stacking unit 15 includes a tray 11 that has been washed and stacked by operating the drop prevention claws 93 and 94 by moving the tray 11 that has been drained and dried by the draining / drying unit 14 to operate. A tray elevating means 102 capable of automatically stacking the trays 11 from below is provided. Hereinafter, the tray elevating means 102 will be described in detail. As shown in FIGS. 6 and 8, the tray elevating means 102 has a sprocket wheel 104 attached to an output shaft of a motor 103 with a speed reducer fixed to the main body frame 54, and reduces the rotational force of the sprocket wheel 104. The transmission is performed via a chain 109 to a sprocket wheel 108 provided on a drive shaft 107 rotatably supported by bearings 105 and 106 fixed to the main body frame 54.

An eccentric cam plate 110 is attached to the inner end of the drive shaft 107. A lower end of a connecting rod 111 is rotatably connected to the eccentric cam plate 110, and the connecting rod is connected to the eccentric cam plate 110. The upper end of 111 is rotatably connected to the lower end of the lifting rod 112. A support plate 113 that supports the center of the lower surface of the tray 11 is attached to the upper end of the lifting rod 112. As shown in FIGS. 6 and 8, the lifting rod 112 supporting the support plate 113 is connected to four flanged guide rollers 115 to 118 mounted on the mounting bracket 114 fixed to the main body frame 54, and on the left and right sides. Therefore, it is guided so that it can move vertically.

The support plate 113 has a size that does not contact the chains 69 and 70 when ascending. At the lower limit position, as shown in FIG. 6, a solid line is placed on the chains 69 and 70 (not shown). A gap G is provided between the lower surface of the tray 11 shown in FIG. The support plate 113 rises the distance G to lift the tray 11 placed on the chains 69, 70, and the both edges 17, 18 of the tray 11 lifted just before the upper limit position are moved by the fall prevention claws 93, 94. When the protrusions 99 and 100 are pushed up to keep the protrusions 99 and 100 of the fall prevention claws 93 and 94 open on both sides and continue to rise, the coil spring is released when the both edges 17 and 18 come off from the protrusions 99 and 100. Due to the urging force of 101, the fall prevention claws 93 and 94 return to their original positions.

The support plate 113 is further raised, and the upper limit position is set to a position indicated by a two-dot chain line in FIG. 6. In this state, both edges 17 and 18 of the tray 11 are in contact with the projections 9 of the drop prevention claws 93 and 94. It is set to be a position slightly higher than the level of 9,100. When the support plate 113 is lowered from this upper limit position, both edges 17, 18 of the tray 11 are seated on the protrusions 99, 100 of the drop prevention claws 93, 94, while the support plate 113 is further lowered to the lower limit. Return to position. Accordingly, when the drive shaft 107 is rotated once by driving the motor 103 with a speed reducer, the support plate 113 lifts the tray 11 placed on the chains 69, 70, and opens the drop prevention claws 93, 94 to remove the tray 11. After rising to the upper limit position, the support plate 113 can be lowered and the tray 11 can be placed on the projections 99 and 100 of the fall prevention claws 93 and 94.

Before the support plate 113 is lifted, the tray 11 which has already been washed is placed on the projections 99 and 100 of the fall prevention claws 93 and 94, and the tray 11 is stacked in a plurality of stages. However, the stacked trays 11 are lifted from below by the new tray 11, and the trays 11 are stacked on the new tray 11. Reference numeral 121 indicates a stopper for the tray 11.

Next, the operation of the automatic tray cleaning apparatus 10 according to one embodiment of the present invention will be described with reference to the drawings. The transport operation of the chain conveyor 16 is divided into two cases, a method A in which the movement of the chain conveyor 16 is completely stopped periodically and a method B in which the movement of the chain conveyor 16 is periodically reduced in speed. is there. In the method A, the chain conveyor 16 that transports the tray 11 basically stops once when the tray 11 is transported to each of the processing positions a, b, c, and d, and starts again after the processing is completed. Transport. On the other hand, in the method B, the chain conveyor 16 does not stop but performs processing at a reduced speed at each of the processing positions a, b, c, and d, and after the processing is completed, accelerates and transports. The chain conveyor 16 is provided with intermittent transfer means (including a motor, a speed reducer, and a control device) capable of performing the above-described transfer operation.

(1) Loading of Stacked Trays First, as shown in FIG. 1 and FIG. 4, about 10 trays 11 at the lower stage where a plurality of trays 11 are stacked are placed in the front-rear direction of the automatic feeding unit 12. It is set manually so as to be guided by a pair of guide plates 119 and 120 arranged at the position. (2) Tray cutting-out After confirming that the tray 11 is not on the chain conveyor 16 by the limit switch 71 arranged in the automatic supply unit 12, the motor 32 with the speed reducer is driven to stack the tray 11 as shown in FIG. The lower tray 11 is dropped on the chain conveyor 16 and placed on the chains 69 and 70 as shown in FIG. When the tray 11 is dropped, the limit switch 71 operates to automatically stop the motor 32 with a speed reducer, and also drives the motor 55 with a speed reducer to operate the chain conveyor 16. By sensing the movement, as shown in FIGS. 2 and 9, the tray 11 at the automatic supply position a is transported to the washing position b, and the motor 55 with the speed reducer is stopped to stop the chain conveyor 16.

(3) Cleaning of Tray While the tray 11 is being conveyed from the automatic supply position a to the cleaning position b, the upper surface of the tray 11 is first sprayed with the cleaning brush 74 by the cleaning brush 74 as shown in FIG. Wash with brush. When the tray 11 passes through the cleaning brush 74, the chain conveyor 16 is not stopped. Thereafter, when the tray 11 comes to the washing position b, the chain conveyor 16 is automatically stopped (or decelerated), and the spray nozzles 75 and 76 inject fresh water onto the upper and lower surfaces of the tray 11 for several seconds to several tens of seconds. Perform final cleaning (final cleaning is performed only when the chain conveyor 16 is stopped or decelerated). After the cleaning of the tray 11, the chain conveyor 16 is operated (or accelerated) again to transport the tray 11 to the draining / drying unit 14.

(4) Draining and Drying of Tray The tray 11 washed at the washing position b is transported to the draining / drying position c by the chain conveyor 16 and the chain conveyor 16 is automatically stopped (or decelerated) by the proximity switch 72. 1), and as shown in FIG. 1, hot or cold air is blown onto the upper and lower surfaces of the tray 11 for several seconds to several tens of seconds by the air blowing means 85 and 86 to drain and dry. (5) Stacking of trays The tray 11 that has been drained at the draining / drying position c is conveyed to the automatic stacking position d by the chain conveyor 16 and automatically stopped (or decelerated). The tray 11 can be stopped).

As shown in FIG. 6 to FIG. 8, the motor 103 with the speed reducer of the tray elevating means 102 is driven to lift the tray 11 on which the support plate 113 is placed on the chains 69 and 70, and further raise it. The fall prevention claws 93 and 94 are opened by the edges 17 and 18 of the tray 11, and the tray 11 is raised to the upper limit position. At this time, the plurality of trays 11 placed on the fall prevention claws 93 and 94 are supported by the new tray 11 that has been lifted, and then the fall prevention claws 93 and 94 return to the original state. doing. Thereafter, if the support plate 113 is lowered in a state where the already stacked trays 11 are stacked on the new tray 11, the new tray 11 is set as the lowermost tray on the returned fall prevention claws 93 and 94. The support plate 113 is further lowered and returns to the lower limit position.

In the above embodiment, the case of the intermittent operation in which the vehicle temporarily stops at the specific position has been mainly described. However, the intermittent operation of performing the deceleration operation at the specific position may be applied. The supply rotation shafts 24 to 27 are mechanically driven synchronously, but may be driven electrically or by another method as required.

Although two sets of fall prevention claws 93 and 94 are provided, one set is provided as long as it has a width (in a plan view) that can hold the edges 17 and 18 of the tray 11 stably. You can also. In the tray lifting / lowering means 102, the lifting / lowering rod 112 is lifted / lowered by the crank method. However, the lifting / lowering rod 112 is not limited to this, and the lifting / lowering rod 112 can be directly driven by a linear motion cylinder or the like.

[0033]

[Effect of the invention]

 In the automatic tray cleaning apparatus according to any one of claims 1 to 4, a plurality of trays are stacked while the trays are sequentially and intermittently conveyed to an automatic supply unit, a cleaning unit, a draining / drying unit, and an automatic stacking unit by a chain conveyor. After each step of feeding, washing, draining and drying from each tray, stacking on multiple stacked trays can be performed continuously and automatically, eliminating the need for specialized personnel. As a result, sufficient labor can be saved, and as a result, work efficiency and labor costs can be reduced. For example, when available for other tasks, it is possible to carry in multiple used trays and / or carry out multiple washed out trays.

In particular, in the automatic tray cleaning device according to the second aspect, only the lowermost tray from the plurality of stacked trays can be reliably and automatically placed on the chain conveyor one by one. , Workability is improved. In the automatic tray cleaning device according to the third aspect, a tray is added and arranged below the lowermost tray placed on the fall prevention claw, and is automatically placed again on the fall prevention claw. The space on the chain conveyor can be used effectively. In the automatic tray cleaning device according to the fourth aspect of the present invention, it is possible to prevent scattering of sewage water and to prevent the emission of hot air or cold air. I can do it.

[Brief description of the drawings]

FIG. 1 is a front view illustrating the configuration and steps of an automatic tray cleaning apparatus according to an embodiment of the present invention.

FIG. 2 is a plan view illustrating the configuration of the tray automatic cleaning device.

FIGS. 3A, 3B, and 3C are a plan view, a front view, and a side view, respectively, of a tray used in the automatic tray cleaning apparatus.

FIG. 4 is a front view of an automatic supply unit of the automatic tray cleaning apparatus.

FIGS. 5A and 5B are an enlarged view of a main part and a plan view of a main part of an automatic supply unit of the automatic tray cleaning apparatus, respectively.

FIG. 6 is a front view of an automatic stacking unit of the tray automatic cleaning device.

FIG. 7 is a plan view of an automatic stacking unit of the tray automatic cleaning device.

FIG. 8 is a side view of an automatic stacking unit of the automatic tray cleaning device.

FIG. 9 is an explanatory diagram of a method of controlling a chain conveyor of the automatic tray cleaning device.

[Explanation of symbols]

10: tray automatic cleaning device, 11: tray, 12: automatic supply unit, 13: cleaning unit, 14: draining / drying unit, 15:
Automatic stacking unit, 16: chain conveyor, 17, 1
8: edge, 19: bottom, 20 to 23: thread, 24 to 2
7: supply rotating shaft, 28: drive chain, 30: synchronous drive means, 31: mounting frame, 32: motor with reduction gear, 3
3, 34: bevel gear, 35, 36: bearing, 37, 3
8: bevel gear, 39: synchronous shaft, 40, 41: bearing, 4
2, 43: bevel gear, 44, 45: bearing, 46, 4
7: gear, 48, 49: bearing, 50: side end, 51: outer peripheral surface, 52: floor surface, 53: level adjusting bracket, 54: body frame, 55: motor with reduction gear, 56: sprocket wheel, 57, 58: bearing, 59: chain drive shaft,
60-62: sprocket wheel, 63, 64: bearing, 65: chain driven shaft, 66, 67: sprocket wheel, 68: tension sprocket wheel, 69,
70: chain, 71: limit switch (sensor), 72: proximity switch (sensor), 73: sensing lever, 74: cleaning brush (cleaning means), 75, 76:
Injection nozzle, 77: scattering prevention cover, 78: drainage storage tank, 79: drain hose, 80: pipe, 81, 82: water spray pipe, 83, 84: nozzle body, 85, 86: wind blow means, 87, 88: Emission prevention cover, 89, 9
0: hot air duct (cold air duct), 91, 92: outlet, 93, 94: drop prevention claw, 95, 96: bracket, 97, 98: pin, 99, 100: projecting portion, 10
1: coil spring (elastic member), 102: tray elevating means, 103: motor with reduction gear, 104: sprocket wheel, 105, 106: bearing, 107: drive shaft, 108: proke wheel, 109: chain,
110: eccentric cam plate, 111: connecting rod, 112: lifting rod, 113: support plate, 114: mounting bracket, 115 to 118: guide roller with flange, 11
9, 120: guide plate, 121: stopper,

Claims (4)

[Utility model registration claims] 1. Used trays having flat edges on both sides are stacked and arranged, and an automatic supply unit for automatically taking out one sheet at a time from the lowermost tray, and taking out by the automatic supply unit. A washing unit for washing the tray while spraying a washing liquid on at least the upper surface of the tray, and a washing unit having a spray nozzle for spraying fresh water on the upper and lower surfaces of the tray after washing by the washing unit to perform final washing. A blower for blowing hot or cold air onto the upper and lower surfaces of the tray washed by the washing unit, and a draining / drying unit for draining and drying the tray; and a draining / drying unit for drying and drying the tray. And an automatic stacking unit for automatically stacking the trays from below, wherein the automatic supply unit, the washing unit, the draining / drying unit, and the automatic stacking unit are provided on both sides. The chain on both sides is sequentially connected by a chain conveyor that has become a space, and the chain conveyor is provided with an intermittent conveying means, and the tray is supplied with the automatic supply unit, the cleaning unit, An automatic tray cleaning device, wherein the tray is sequentially sent to a draining / drying unit and the automatic stacking unit. 2. The automatic tray cleaning device according to claim 1, wherein the automatic supply unit includes supply rotation shafts vertically arranged in pairs on the left and right sides of the stacked trays, respectively. The supply rotating shaft has a thread on which the opposite edge of the stacked lowermost tray is placed, and only the edge of the lowermost tray comes off due to the rotation of the supply rotating shaft. An automatic tray cleaning apparatus, wherein a tray is separated from a tray above the tray and placed on the chain conveyor. 3. The automatic tray cleaning device according to claim 2, wherein the automatic stacking unit is a pair of tray elevating means for pushing up the tray conveyed by the chain conveyor, and a pair on both sides of the tray elevating means. And a pair of left and right drop prevention claws that support the tray placed thereon in a state where the tray is lifted by the tray lifting / lowering means and are disposed outwardly when the tray is raised by the tray lifting / lowering means. And automatic tray cleaning equipment. 4. An automatic tray cleaning apparatus according to claim 3, wherein said cleaning liquid or said fresh water is provided with a cover for preventing scattering of said cleaning liquid above and on both sides of said cleaning section, and said cleaning liquid is provided below said cleaning section. Or, provided a drainage storage tank for storing and discharging the sewage by the fresh water, the draining and drying unit,
An automatic tray cleaning device, further comprising a cover for preventing hot air or cold air from being blown onto the upper and lower surfaces of the tray.