JP3815544B2 - Gravity inspection storage system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to a weight inspection loading / unloading system that uses a total weight measuring device for measuring the weight of a load that is loaded and unloaded with a tare, such as a pallet or a case, to determine whether the load is loaded or unloaded. is there.
[0002]
[Prior art]
The basic configuration of this type of weight inspection / receipt / reception system will be described with reference to FIG. 1. This FIG. 1 shows the warehousing system to the automatic warehouse 1, and the load to be received is first the arrival goods check place. 2, the load data 3 is read, the load data 3 and the planned storage data 4 are collated, and when the load data 3 and the planned storage data 4 match, the next load is received from the received goods checkpoint 2. When the load data 3 and the warehousing schedule data 4 do not match, the route switching means 6 branches and unloads to the warehousing cancellation line 7. In addition, the reading of the load data 3 at the incoming goods check site 2 can be performed by a visual reading operation of an arrival slip attached to the load or an automatic reading operation using an automatic reading sensor. Further, the collation operation of the read cargo data 3 and the warehousing schedule data 4 may be performed manually by visual operation or automatically by the computer-based collation operation means 8.
[0003]
Thus, the total weight measuring device 5 measures the total weight of the sent load including the tare. The net weight of the load excluding the tare (pallet or the like) is calculated from the measurement result and the scheduled storage data 4 and an error between the calculated result and the net weight data of the load included in the scheduled storage data 4 is calculated. It is determined whether or not it is within a preset allowable error range. If it is within the allowable error range, the load of the total weight measuring device 5 is carried into the automatic warehouse 1 by the final storage line 9 and is outside the allowable error range. If so, the load of the total weight measuring device 5 is branched and carried out to the warehousing cancellation line 11 by the route switching means 10.
[0004]
The calculation of the net weight of the load and the determination of whether or not the calculation result is within the allowable error range can be automatically performed by the net weight calculation using computer and the warehousing determination means 12. In addition, although the incoming goods check field 2 is arranged in front of the total weight measuring device 5, the incoming goods check field 2 is also used as the total weight measuring device 5, and the total weight measuring device 5 stores the load data 3. At the same time, the load data 3 and the warehousing schedule data 4 are collated. When the load data 3 and the warehousing schedule data 4 match, the total weight measuring device 5 starts measuring the total weight of the load, When the cargo data 3 and the warehousing schedule data 4 do not coincide with each other, the cargo data 3 and the warehousing schedule data 4 may be immediately carried out and branched out to the warehousing cancellation line 11 by the route switching means 10.
[0005]
[Problems to be solved by the invention]
For example, in the weight inspection / receipt / receipt system implemented as described above, the net weight of the load excluding tare (pallet, etc.) from the total weight of the tare measured by the total weight measuring device 5 and the planned storage data 4. Since it is necessary to calculate the weight, the scheduled storage data 4 includes not only the net weight of the load but also the weight of the tare (pallet etc. on which each item is loaded) or the type of the tare. Must be included as data. Thus, when the tare weight for each received item is set on the scheduled receipt data 4, the tare weight is subtracted from the total tare weight of the load measured by the gross weight measuring device 5 to obtain the net weight of the load. The weight is obtained, the result is compared with the net weight of the corresponding load on the storage schedule data 4, and the right or wrong of the storage is determined on the basis of the error. When the tare type is set, the tare weight corresponding to the tare type is retrieved from the tare type for each tare type, and the tare weight thus found is measured by the gross weight measuring device 5. The net weight of the load is calculated by subtracting it from the total weight including the tare, the result is compared with the net weight of the corresponding load on the scheduled storage data 4, and the right or wrong of the warehousing is determined based on the error. .
[0006]
In any case, the warehousing schedule data 4 needs to have not only the net weight of the load but also the weight of the tare or the type of the tare as data for each incoming goods. In addition to taking a lot of time to create the tare, entering the tare weight or tare type that is different from the tare actually used may have a serious adverse effect on the appropriateness of the entry / exit at the final stage. is there.
[0007]
[Means for Solving the Problems]
The object of the present invention is to provide a weight inspection storage system that can solve the above-mentioned problems, and the means thereof is shown with reference numerals in the embodiments described later. a weight inspection goods movements systems using the total weight measuring device 5 for measuring the tare included weight of the load being goods movements in tare included cases such as the total weight measuring apparatus 5 state or the apparatus is set to Using the tare type determination device 13 for determining the type of the tare of the load before being carried in, the tare type determined by the tare type determination device 13 and the tare weight for each preset tare type are used. The tare weight PW is determined, and the tare weight PW is subtracted from the total weight TW of the load measured by the total weight measuring device 5 to obtain the net weight ΔNW of the load, and the net weight ΔNW and the loading of the load Expected delivery In the weight inspection / receipt / receipt / receipt system using the arithmetic means 22 for judging the right / left of receipt / exit of the load based on the comparison with the information on the data 4 ,
The tare type determination device 13 includes a sensor 14 for detecting a state of a specific portion of the tare of the load set at a fixed position, a color, display contents, and the like, and a state of the tare specific portion detected by the sensor 14. Computation means 17 for determining the type of the tare of the load from the state of a specific location for each preset tare type, the sensor 14 pushers 27 and 28 for positioning the load at a fixed position. It is the structure attached to.
[0009]
When carrying out the above-described system of the present invention, the load unloaded from the total weight measuring device 5 is alternatively branched into a final loading / unloading line (warehousing line 9) and a loading / unloading cancellation line (warehousing cancellation line 11). The route switching means 10 is also provided, and the route switching means 11 can be automatically switched based on the determination result of the calculation means 22 for determining whether the load is loaded or unloaded.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
A preferred embodiment of the present invention will be described below with reference to the accompanying drawings. In the weight inspection goods receiving system shown in FIG. 1, as shown in FIG. 2, the total weight measuring device 5 is provided with a tare type determining device 13. Is done. The tare type determination device 13 includes a sensor 14 that detects the state of a specific portion of a tare (pallet) of a load set at a fixed position, a state such as a color, display content, and the information (tare identification) detected by the sensor 14. The state of the part) 15 and a preset tare type determination condition (the state of the same specific part for each tare type) 16 are included in the calculation means 17 for determining the type of the tare of the load. The tare type information 18 output from the tare type determination device 13 (calculation means 17) is input to the next tare weight determination calculation means 19. A weight table 20 for each tare type is set in advance in the tare weight determination calculation means 19, and the weight of the corresponding tare type is searched from the weight table 20 based on the inputted tare type information 18. Output as weight PW.
[0011]
On the other hand, the measured total weight TW output from the total weight measuring device 5 and the tare weight PW are input to the calculation means 21, and the calculation means 21 calculates “measured total weight TW−the tare weight PW”. The calculated net weight ΔNW is output. The calculated net weight ΔNW obtained in this way is input to the comparison calculation means 22 in the next stage and compared with the net weight NW of the corresponding load on the warehousing schedule data 4 input separately to the comparison calculation means 22. Thus, the error ΔW between the two is obtained, and the difference between the error ΔW and the allowable error SW (changeable) preset in the comparison calculation means 22 is obtained. If the error ΔW is smaller than the allowable error SW, the warehousing determination information is output. If the error ΔW is larger than the allowable error SW, the warehousing cancellation determination information is output.
[0012]
The path switching means 10 shown in FIG. 1 is automatically controlled based on the determination result by the comparison operation means 22, and when the warehousing OK determination information is output, the load of the total weight measuring device 5 is the final warehousing. When the transfer information is transferred to the automatic warehouse 1 from the line 9 and the warehousing cancellation determination information is output, the load of the total weight measuring device 5 is branched and transferred to the warehousing cancellation line 11 by the path switching means 10.
[0013]
An example of the total weight measuring device 5 provided with the tare type determining device 13 will be described with reference to FIGS. 3 and 4. The total weight measuring device 5 loads the load 24 at a fixed position of the load conveying line (roller conveyor) 23. A retractable stopper 26 for stopping the loaded pallet 25 and a pair of left and right centering pushers 27 and 28 for centering the pallet 25 stopped at a fixed position by the stopper 26 at a fixed position in the width direction of the load transport line 23. And a pallet 25 positioned by these stoppers 26 and centering pushers 27 and 28, and a load cell 29 which can be raised and lowered to slightly lift the pallet 25 from the conveying surface of the load conveying line 23 and measure the total weight of the load 24 and the pallet 25. Has been. Reference numeral 30 denotes a cylinder unit that raises and lowers the load cell 29, and reference numeral 31 denotes a plurality of pallet lifting platforms that protrude from the load cell 29 and move up and down between the rollers of the load transport line 23.
[0014]
As the pallet 25, there are known various types of pallets that can be used properly according to the load to be handled, such as a flat plate type or a box type. Here, as shown in FIG. 5, a wooden pallet 25A and a synthetic resin pallet are used. It is assumed that 25B is properly used. Each of these pallets 25A and 25B is generally used in a square of 1100 mm square, for example, but in addition to the pallet 25B made of synthetic resin, a rectangle of 1100 mm × 1200 mm can also be used properly. To do. Thus, the wooden pallet 25A has fork insertion holes 32 formed only at the front and rear end faces, and the synthetic resin pallet 25B has fork insertion holes 32 formed at both the front and rear end faces and the left and right end faces. To do.
[0015]
In the load transport line 23, for example, a wooden pallet 25A is transported in a direction in which the front-rear direction including the fork insertion hole 32 coincides with the transport direction in the load transport line 23, and the synthetic resin pallet 25B is a square one. Since it is a front-rear left-right symmetrical shape, it may be transported so that either the front-rear direction or the left-right direction coincides with the transport direction of the load transport line 23, and the rectangular shape has its length direction transported by the load transport line 23 It shall be conveyed so as to coincide with the direction.
[0016]
For example, as shown in FIG. 4, the sensor 14 of the tare type judging device 13 for discriminating a total of three types of pallets 25 includes a front end face of the pallet 25 positioned by a stopper 26 and centering pushers 27 and 28. The sensors 14a and 14b that detect the presence or absence of the fork insertion hole 32 corresponding to one side are used, and when only the side sensor 14a detects the fork insertion hole 32, both are determined to be a wooden pallet 25A, When the sensors 14a and 14b detect the fork insertion hole 32, it can be determined that the pallet 25B is made of synthetic resin. In addition, the image sensor 14c having the front end surface (or rear end surface) and one side surface of the pallet 25 as detection ranges at the same time is used, and the images of the corresponding corner portions of the wooden pallet 25A and the synthetic resin pallet 25B stored in advance are used. And the captured image of the image sensor 14c can be compared to determine which pallet it is.
[0017]
Further, when a pallet type identification display unit 33 formed by a sticking label or an integrally formed marker is provided at a specific location of each pallet 25, a sensor 14d that reads the display content of the pallet identification display unit 33. Can be used to determine the type of the pallet 25 from the content read by the sensor 14d. In this case, the weight of the pallet itself can be displayed on the pallet type identification display unit 33, and the pallet weight can be directly read by the sensor 14d. Whether the synthetic resin pallet 25B is long or short is determined by, for example, a sensor for detecting whether or not the pallet 25 is positioned at a fixed position by the stopper 26 and the centering pushers 27 and 28, for example, the front end of the pallet 25 A sensor 14e for detecting a part, a sensor 14f for detecting the rear end of a square pallet, and a sensor 14g for detecting only the rear end of a rectangular pallet. When the sensors 14e and 14f are on and the sensor 14g is off A square pallet can be determined as a rectangular pallet when all the sensors 14f to 14g are on.
[0018]
When sensors corresponding to the side surfaces of the pallet 25 (sensor 14a, sensor 14d, etc. in the illustrated example) are used, these are supported by either or both of the centering pushers 27 and 28 for centering the pallet 25. The sensor can be detected and operated at a constant distance from the side surface of the pallet 25 at all times. Further, when using sensors corresponding to the front and rear end faces of the pallet 25 (sensor 14b in the illustrated example), the pallet 25 enters the evacuation position on the lateral side of the conveyance path of the pallet 25 and enters the conveyance path of the pallet 25. The sensor may be supported by a movable member 34 (for example, a horizontally swinging arm or a laterally moving movable member) that can move between detection positions corresponding to the front and rear end surfaces.
[0019]
If a box-type pallet or case is used as a tare and a large number of identical items are stored in the container, the stored number of loads is set as the scheduled storage data 4 instead of the net weight of each tare. May be. In such a case, the weight and the number of one load are set in the warehousing schedule data 4 and the load determined by the total weight measuring device 5, the tare type determining device 13 and the related calculation determining means, etc. Divide the net weight by the weight of one load taken from the scheduled storage data 4 to obtain the number of loads, compare the number of these loads with the number of loads loaded from the planned storage data 4, and check Can also be determined. Conversely, the total weight of the load is calculated from the weight of one load and the number of loads fetched from the scheduled storage data 4, and the calculated result is compared with the net weight of the determined load. You can also determine whether it is right or wrong.
[0020]
In the above embodiment, the example of applying the weight inspection / receipt / receipt system of the present invention to the warehousing system to the automatic warehouse 1 is shown. However, the weight inspection / receipt / receipt system of the present invention is applied to the evacuation system from the automatic warehouse 1. It is also possible to determine whether or not to ship the load based on the result of the weight inspection. Further, although the tare type determining device 13 is incorporated in the total weight measuring device 5, the tare type determining device 13 may be disposed on the load conveyance line to the total weight measuring device 5. Further, in the system of the present invention, when it is determined by the computing means 22 that the warehousing is not possible, it is possible to simply activate an alarm means such as a lamp or a buzzer.
[0021]
【The invention's effect】
The weight inspection / receipt / receipt system of the present invention can be implemented and used as described above, and according to the system of the present invention, the warehousing / scheduling data includes, It is only necessary to set the net weight (it may be the weight of one load and the number of loads), and it is not necessary to have the tare weight of each load or the type of the tare as data. Less time is required to create data. Moreover, not only is there any inconvenience caused by erroneously setting the information on the tare, but it is also possible to cope with the case where the tare actually used has been changed due to the circumstances of the site after creating the entry / exit schedule data. Yes, it is possible to make a right / no-go decision based on the exact net weight of the load. Furthermore, according to the configuration of the present invention, the tare type determination device can be implemented with a relatively simple configuration, and the interval between the surface of the tare (pallet or the like) positioned at a fixed position and the sensor is always set. The tare type can be determined accurately with a constant value.
[0022]
In addition, according to the structure of Claim 2, it can remove automatically from a loading / unloading line, and can cancel loading / unloading, without relying on manpower for the load determined to be loading / unloading.
[Brief description of the drawings]
FIG. 1 is a block diagram illustrating a basic configuration of a weight inspection receiving system.
FIG. 2 is a block diagram for explaining a main part of the system of the present invention.
FIG. 3 is a side view showing an example of a specific configuration of the total weight measuring device.
FIG. 4 is a plan view illustrating a sensor of the tare type determination device.
FIG. 5 is a perspective view illustrating the type of pallet as a tare.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Automatic warehouse 5 Total weight measuring device 9 Final warehousing line 10 Route switching means 11 Warehousing cancellation line 12 Calculation means 13 Tare type determination device 14 Tare state detection sensors 14a to 14g Sensors 17, 19, 21, 22 Calculation means 23 Carrying line (roller conveyor)
24 Load 25 Pallet (Tare)
25A Wooden pallet 25B Synthetic resin pallet 26 Elevating stoppers 27 and 28 Centering pusher 29 Elevating load cell 32 Pallet fork insertion hole

Claims (2)

Pallet, a weight inspection goods movements systems using the total weight measuring device for measuring the tare included weight of the load being goods movements in tare included cases such as the total weight measuring apparatus set state or the device to Using a tare type determination device that determines the type of the tare of the load before being carried in, the tare weight of the load from the tare type determined by the tare type determination device and a preset tare weight for each tare type. The tare weight is subtracted from the total weight of the load measured by the total weight measuring device to obtain the net weight of the load, and the net weight and the information on the storage schedule data of the load In a weight inspection storage system that uses a calculation means for determining whether the load is stored or not based on the comparison ,
The tare type determination device is preset with a sensor that detects the state of the specific location of the tare of the load set at a fixed position, the color, the display content, and the like, and the state of the specific tare detected by the sensor. And calculating means for determining the type of the tare of the load from the state of the specific location for each type of tare,
A weight inspection system for loading and unloading, wherein the sensor is attached to a pusher for positioning the load at a fixed position . A path switching means for alternatively branching the cargo carried out from the total weight measuring apparatus into a final loading / unloading line and a loading / unloading cancellation line is provided, and the calculation means for determining whether the loading / unloading of the load is appropriate The weight inspection inspection system according to claim 1, wherein the route switching means is automatically switched based on a result .

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