JP2002166232A - Measuring apparatus and measuring system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a measuring system and a measuring apparatus wherein a single apparatus enables articles to be subjected to combination measuring, rank sorting, and weight checking based on the weight of the articles that is measured while the articles are horizontally conveyed. SOLUTION: A single measuring apparatus is provided with a measuring conveyor 12, six sorting devices 131-136, and a control part 16. A switching part 16e in the control part 16 enables selection of any part from a combination calculating part 16b for calculating the combination of the articles, a rank sorting part 16c for specifying the articles by weight ranks, and a weight checking part 16d for checking whether the weight of the articles is proper/ improper. A sort controlling part 16f in the control part 16 operates corresponding sorting devices 131-136, based on the weight of the articles measured by a weight detector 12a equipped to the measuring conveyor 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weighing device and a weighing system for combining and weighing articles based on the weight of the weighed articles, or for checking the weight, and belongs to the field of article weighing technology.

[0002]

2. Description of the Related Art Among weighing devices used for a wide range of applications, a combination weighing device is used when a plurality of articles of different weights, such as agricultural products and marine products, are combined into a product having a predetermined target weight. The apparatus supplies each article to a plurality of weighing machines, weighs the articles, and selects a combination of articles whose sum of the measured values is equal to or closest to a predetermined target weight. is there.

[0003] A rank sorter used when it is desired that the articles have the same weight rank such as S, M, and L is used in conjunction with a plurality of sorting devices arranged downstream of the weighing machine. By doing so, the articles are ranked and sorted according to a preset weight rank based on the weight of the articles weighed by the weighing machine.

[0004] A weight checker used to determine an article whose weight is defective with respect to a predetermined target weight and appropriately correct the weight of the defective article according to excess or shortage, for example,
On the basis of the weight of the article weighed by the weighing machine, if the article is a genuine product that is within a predetermined allowable range with respect to a predetermined target weight, the genuine product is left on the transport path. If the article is an excess article or a lightweight article that is out of a predetermined allowable range with respect to a predetermined target weight, the article is discharged to the outside of the transport path by a sorting device or the like, so that the article is removed. It is to determine.

[0005] Although each of the above-mentioned devices is related to the weighing of articles, each device generally has only a single function of a combination weighing function, a rank selection function, or a weight check function. For example, in order to perform the above-described various article weighing, since each of the above-described devices must be installed, there may be a problem in terms of installation space and equipment costs, and the above-described functions are appropriately combined. There is a need for a general purpose device.

[0006] In order to meet this demand,
For example, there is a weighing device disclosed in JP-A-8-313333. This weighing device calculates a plurality of weighing machines for weighing a plurality of supplied articles, a function of selecting a weight rank of each article based on the weight of the article weighed by each weighing machine, and a combination of articles. It is provided with a combination calculation function, and is a general-purpose device capable of performing rank selection and combination weighing with a single device. Further, on the downstream side of the weighing device, there are provided a packaging machine for wrapping articles discharged from the weighing device in combination, and a distribution device for sorting the wrapped articles by weight rank, When an article having a weight rank and a predetermined combination weight is discharged from the weighing device, the articles are sequentially packaged and collected according to the weight rank.

[0007]

By the way, the above-mentioned weighing device has a general configuration in which a large number of weighing hoppers as weighing machines are circularly arranged and a large number of articles are dispersedly supplied to these weighing hoppers from above. As described above, a large number of weighing machines are required. Therefore, problems such as securing an installation space for these weighing machines and soaring equipment costs may occur.

When fish and shellfish are supplied to the above-mentioned measuring device, it is necessary to frequently clean the device since the propagation of various bacteria must be prevented. By the way, if there are many weighing machines, such as the above weighing devices, which come into direct contact with articles such as fish and shellfish, cleaning these weighing machines is very troublesome, and is not preferable from the viewpoint of cleanability.

Further, since the articles discharged from the weighing device are naturally dropped toward the packaging machine provided below, it is usually difficult to align the articles in a predetermined direction. . Therefore, for example, when handling an article that has directionality in the form, such as fish fillet or number child, is stored in a tray in the same direction in the downstream process, and is not deformed until it reaches the consumer's hand. Is
However versatile, the metering device described above cannot be used to process such articles.

[0010] In view of the above situation, the present invention provides a combination weighing or rank sorting of articles based on the weight of the weighed articles while transporting the articles horizontally.
Another object of the present invention is to provide a weighing device and a weighing system capable of performing a weight check with a single device.

[0011]

Means for Solving the Problems In order to solve the above problems, each invention of the present application is characterized in that it is configured as follows.

First, according to the first aspect of the present invention, a single weighing mechanism for horizontally transporting and weighing articles, and a plurality of articles are sequentially arranged downstream of the weighing mechanism in the transport direction, so that a plurality of articles can be horizontally moved. Weighing apparatus having a plurality of article sorting mechanisms for transporting the articles to the outside of the transport path and operating the sorting mechanism corresponding to a combination calculation result based on the weight of the plurality of articles obtained by the weighing mechanism. Means, rank selection means for operating the sorting mechanism corresponding to the rank selection result based on the weight of the article obtained by the weighing mechanism, and a weight check result based on the weight of the article obtained by the weighing mechanism. It is characterized by comprising at least two of the weight checking means for operating the sorting mechanism, and switching means for switching the operation of these means.

According to the present invention, a weighing device having a single weighing mechanism is provided with a plurality of sorting mechanisms for sorting articles out of the transport path, and includes a combination weighing means, a rank selecting means, and a weight checking means. A general-purpose weighing device that is a single device because it has at least two or more means and is configured to be able to select any means according to the application by switching the operation of these means. Is realized. Therefore, the installation space and equipment costs can be reduced, and the cost reduction effect is large.

Further, since the articles are conveyed horizontally, a sorting mechanism capable of sorting the articles out of the conveyance path while maintaining the posture of the articles is employed. For example, during combination weighing, the articles are gathered in the conveyance direction. It becomes possible. Similarly, at the time of rank selection and weight check, articles can be stored in the same attitude in order, for example, in a collection container. Therefore, for example, the articles can be efficiently stored in the tray in a state where the postures are aligned in the downstream process, and by packaging the articles, the commercial value is improved.

Next, according to a second aspect of the present invention, there is provided a weighing device according to the first aspect having at least combination weighing means.
In the weighing system having a plurality of weighing devices, the combination weighing means may determine the weight of the articles by the two weighing devices.
It is possible to perform a mix weighing by combining respective kinds of articles to a predetermined total weight, and to mix the above two articles arranged in parallel.
It is characterized in that a collecting means is provided between the weighing devices for collecting the articles sorted out of the transport paths of these weighing devices.

According to a third aspect of the present invention, there is provided the weighing device according to the first aspect, further comprising at least combination weighing means.
In the weighing system having a plurality of weighing devices, the combination weighing means may determine the weight of the articles by the two weighing devices.
The parent and child weighing, which includes at least one single item among the seed items, and combines the item with a plurality of other items to obtain a predetermined total weight, and is arranged in parallel with the above two items. It is characterized in that a collecting means is provided between the weighing devices for collecting the articles sorted out of the transport paths of these weighing devices.

According to a fourth aspect of the present invention, there is provided a weighing system having at least two weighing devices according to the first aspect, provided with at least combination weighing means. 1 based on the weight of
Combined weighing is possible by combining two kinds of articles by the two weighing devices as a whole to obtain a predetermined total weight, and transporting these weighing devices between the two weighing devices arranged in parallel. It is characterized by comprising a collecting means for collecting the articles sorted out of the route.

According to these inventions, a general-purpose weighing system including two weighing devices having the operation described in the first aspect of the present invention can be obtained. When the number of weighing mechanisms and sorting mechanisms provided in the weighing system is twice as large as that of one weighing device, and the weighing system is used as a rank selecting unit or a weight checking unit, each unit has Article processing capacity is doubled.

Further, since the two weighing devices and the collecting means are provided, when the weighing system is used as the combination weighing means, one of the mix weighing, the parent-child weighing and the combination weighing is selected and executed. It is possible to do.

When the number of sorting mechanisms provided in the weighing system is twice as large as that of one weighing device, the number of articles participating in the combination calculation is reduced when the weighing system is used as combination weighing means. The doubling increases the probability of obtaining a combination that matches or is close to the predetermined target weight. Therefore, the efficiency of the combination weighing, that is, the speed-up, is improved.

Alternatively, by doubling the number of articles participating in the combination calculation, even if the allowable range of the target weight is narrowed, that is, even if a combination with high weighing accuracy is required, the desired combination can be easily obtained. Become like

In particular, according to the second or third aspect of the present invention, two types of articles can be distributed and supplied to two weighing devices, respectively. There is an advantage that the control system is more simplified than when supplying articles.

According to a fifth aspect of the present invention, there is provided a weighing system having at least two weighing devices according to the first aspect, wherein at least two weighing devices are provided. 2 based on the weight of
Mix weighing each kind of articles to a predetermined total weight, always including one single article of the two kinds of articles, and combining the article with a plurality of other articles to a predetermined total weight and At least two of the parent-child weighing and the combination weighing of one kind of articles by the two weighing devices as a predetermined total weight are possible, and the two weighing devices are arranged in parallel. And a collecting means for collecting the articles sorted out of the transport paths of these weighing devices between the weighing devices.

According to the present invention, since the combination weighing means can execute at least two of mix weighing, parent-child weighing, and combination weighing, a versatile weighing system is realized.

[0025]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a weighing device will be described as a first embodiment of the present invention.

First, as shown in FIG.
Is provided with a combination weighing, rank sorting and weight check function. From the upstream side to the downstream side, there are taken-in conveyor 11, weighing conveyor 12, and six sorting devices 13 arranged at appropriate intervals. _{1-13 6} and has, in a generally boundary between the intake conveyor 11 and the metering conveyor 12, the article sensor 14a of the photoelectric type which detects the passage of the article X ... X, 1
4b. Various auxiliary facilities are installed around the weighing device 1 depending on the application. In this manner, the articles X... X supplied from the upstream side as indicated by the arrow A are conveyed to the downstream weighing conveyor 12 by the take-in conveyor 11 and configured by load cells and the like provided on the weighing conveyor 12. The weight of the articles X... X conveyed onto the weighing conveyor 12 is detected by the weight detector 12a, and the detected articles X
... based on the weight of X, the corresponding downstream sorting device 13 ₁
To 13 _{by 6} to operate, these distributing device 1
3 _{1-13 6} passed article X ... X are distributed to the predetermined direction.

[0027] In the weighing apparatus 1, rank when performing sorting or weight check, as shown in FIG. 1, ancillary a facility which six discharge chute 15 _{1-15 6} respectively above six sorter 13 _1-13 is installed in ₆ position opposed to further installed in the distribution device 13 downstream of the ₆ one discharge chute 15 ₇ and most downstream.

The sorting devices 13 _{1 to} 13 ₆ are respectively provided with sorting conveyors 13 ₁ a to 13 ₆ a for conveying the articles X... X,
A pusher 13 ₁ b~13 ₆ b to push toward an article X ... X into the discharge chute 15 _{1-15 6,} the pusher 13 ₁ B to
The 13 ₆ b and a cylinder 13 ₁ c~13 ₆ c for air driven.

[0029] Incidentally, the intake conveyor 11, the weighing conveyor 12 and the sorting conveyor 13 ₁ a~13 ₆ a, article X
... A flat belt type conveyor capable of transporting X horizontally is used.

The control system of the weighing device 1 will now be described. As shown in FIG. 2, the weighing device 1 is provided with a control unit 16 for controlling the entire system.

The control section 16 is connected to an input section 16a used for setting and inputting a target weight at the time of combination weighing, upper and lower limits at the time of rank selection, a target weight at the time of weight check, and the like.

The control unit 16, which inputs a weighing signal from the weight detector 12a, determines a combination of articles X... X having a predetermined target weight or a value closest to the target weight at the time of combination weighing based on the weighing signal. Combination operation unit 16b for operation
A rank selecting unit 16c for specifying the articles XX in each of the predetermined weight ranks; and a weight checking unit 16d for checking whether the weight of the articles XX is positive or not with respect to a predetermined target weight. And a switching unit 16e for selecting which of the combination weighing, the rank selection, and the weight check is to be executed.

Further, the control unit 16 controls the
The combination operation unit 16b or the rank selection unit 16
c or according to the judgment of the weight check unit 16d.
Sorting device 13₁~ 13₆Operation of the cylinder 13₁
c-13₆a distribution control unit 16f for controlling the operation of
Loading conveyor 11, weighing conveyor 12, sorting conveyor 13
₁a-13₆a and ancillary equipment for combination weighing described later.
A control signal is output to the collecting conveyor 17 to
Conveyor control unit 16g for controlling the movement and the transport speed
ing.

When weighing the articles X... X by the weight detector 12a, the control section 16 includes a filter 16h for obtaining a stable weighing signal necessary for determining the weight of the articles X.
have.

The control unit 16 controls the article sensor 14
a and 14b are input, and based on the input signals, a weighing value to be described later and a temporal starting point T1 of the timing of the sorting operation are set.

Next, an example of control performed by the control unit 16 when the weighing device 1 executes rank selection will be described with reference to the flowchart shown in FIG. In this case, the weighing device 1 is already enabled to perform rank selection by the switching unit 16e of the control unit 16, and an operation start button (not shown) provided on the input unit 16a is pressed to start work. I have.

First, when the article X is supplied to the take-in conveyor 11, the control section 16 determines whether or not an article passing signal has been input from the article sensors 14a and 14b (step S1). If it is determined that is not input, the process returns to step S1. On the other hand, if it is determined that the article passing signal is input, the process proceeds to step S2 and the weighing conveyor 1
The article X is weighed by the second weight detector 12a. In this case, the time T when the article passing signal is input to the control unit 16
1 is the starting point.

Then, from the time T1, the weight detector 1
Period T2 required for the weighing value of article X according to 2a to stabilize
Is determined (step S3), and the time T1
If it is determined that + T2 has not elapsed, step S3 is performed again.
If it is determined that the time T1 + T2 has elapsed, the weighing value at this time is stored as the weight of the article X (step S4).

Next, the article X is determined by the rank selecting section 16c based on the weighing value stored in step S4.
The weight rank is specified to which rank, for example, in light of the ranks shown in Table 1 (step S5).
According to Table 1, the articles X are classified into first to sixth ranks R1 to R6 and R0 out of rank according to their weight.

[0040]

[Table 1]

In step S5, the ranks R1 to R1 of the article X
When specifying the R6, to convey the article X to the position of the sorter _{131-134 6} corresponding to the appropriate rank R1-R6,
The distribution control unit 16f, and outputs a signal to activate the cylinder 13 ₁ C～13 ₆ c of the vibrating component device _{131-134 6} at a predetermined time T1 + T3 that period T3 has elapsed a preset time T1 , the pusher 13 ₁ b~13 ₆ b a is advanced toward the article X of sorting conveyor 13 ₁ a~13 on ₆ a, discharge chute 15 _1-15 corresponding to the rank R1~R6 identified the article X ₆ (see FIG. 1) (step S6). In the illustrated example, the article X specified in the first rank R1 is the sorting apparatus 13 of _the most upstream side corresponds to the rank R1, as indicated by the arrows b and the chain line, the first
It is distributed to the discharge chute 15 ₁ corresponding to the rank R1. On the other hand, if the article X is identified as unranked R0 is the article X is conveyed to pass through the sorter _{131-134 6,} most of the downstream sorting apparatus as indicated by an arrow c 1
3 is discharged ₆ to a discharge chute 15 ₇ provided on the downstream side of the.

In this case, the period T3 is determined by the length of the article X, the weighing conveyor 12 and the sorting conveyors 13 _{1 a to} 13 _6.
based on the length and the conveying speed of a, is set to the distribution device _{131-134 6} larger values located downstream,
In addition, discharge chute 15 _{1-15 7} above 7 rank R0~
Since it is installed by the number corresponding to R6, the article X is reliably screened every predetermined discharge chute 15 _{1-15 7.}

After executing step S6, the process returns to step S1 to repeat the rank selecting operation. In addition, when ending the rank selection work, the operation start button is pressed again.

Next, an example of control performed by the control unit 16 when a weight check is performed by the weighing device 1 will be described with reference to a flowchart shown in FIG. In this case, the weight check of the weighing device 1 can already be performed by the switching unit 16e of the control unit 16, and the operation start button is pressed to start the operation. Since the control from step S11 to step S14 is the same as the control from step S1 to step S4,
Description is omitted.

Now, at step S14, the time T1 + T2
Is stored as the weight of the article X,
The weight check unit 16d determines whether the weight of the article X is within the allowable range of the target weight based on the stored weighed value (step S15).

In step S15, the article X is a positive product.
Is determined, the article X is distributed to the distribution device 13.₁~ 13₆The element
And let it drain as shown by the arrow c.
It returns to S11. On the other hand, it is determined that the article X is an improper product
And the most upstream sorting device 13 ₁Carry the goods X to the position of
From the time T1 by the distribution control unit 16f.
At a predetermined time T1 + T3 when the specified period T3 has elapsed,
Recording device 13₁Cylinder 13₁signal to activate c
Output and pusher 13₁b to the conveyor 13 ₁on a
Advance toward the article X, the article X is indicated by an arrow A and a chain line.
As shown in FIG.₁Discharge shoe corresponding to
G15₁(See FIG. 1) (step S1)
6).

[0047] case, the period T3 may or length of the article X, based on the length of the weighing conveyor 12 and the sorting conveyor 13 ₁ a and the conveyance speed, etc., the article from the time T1 X
Since There has been set to a period until it is conveyed to a predetermined position of the distributing device 13 _1, the article X would be distributed reliably to the predetermined discharge chute 15 _1.

[0048] Instead of distributing the article X in the most upstream sorting device 13 _1, the downstream sorter 13 _2-1
3 by ₆ either be distributed articles X. Further, by operating a plurality of sorter _{131-134 6,} for example, in the lightweight products sorting device 13 _1, a positive amount article sorter 13 ₂
In, and by distributing the excess product at the distribution device 13 _3, a variety of weight check is possible.

After executing step S16, the process returns to step S11 to repeat the weight check operation. To end the weight check operation, the operation start button is pressed again.

Next, in the weighing device 1, one kind of article X.
An example of control performed by the control unit 16 when performing combination weighing to combine X to obtain a predetermined total weight will be described with reference to the flowchart shown in FIG. In that case, the control unit 1
6, the weighing device 1 is already capable of performing combination weighing by the switching unit 16e.
The operation start button has been pressed. Further, as ancillary equipment for executing combination weighing, the discharge chute 15 is provided.
To _{1-15 7} instead of, the sorting device _{131-134 6} position opposed to, and so as to extend in the conveying direction of the article X ... X, set the conveyor 17 is installed. Step S2
The control from step 1 to step S24 is performed in step S1.
Since the control from step S4 to step S4 is the same, the description is omitted.

Now, at step S24, at time T1 + T2
Is stored as the weight of the article X,
Is conveyed to the article X most of the downstream air-to sorter _{131-134 6} (step S25), and the article X is vibrating min 13
Upon reaching _{1-13 6} stops the operation of the sorter _131-134 sorting conveyor 13 ₁ of _{6 a~13 6} a (step S26).

[0052] Then, in the sorting device _{131-134 6,} and stores the weight value in step S24 in the article X (step S27).

Next, it is determined whether or not there are empty distributing devices 13 _{1 to} 13 ₆ (step S28).
_{1-13 6} returns to step S21 if determined that, whereas empty sorter _{131-134 6} proceeds to step S29 if determined that there is no, the combination calculation unit 16b, a predetermined total weight A combination of articles X... X is calculated.

In this case, the combination calculation is performed in a state where there are no empty distribution devices 13 _{1 to} 13 _6. Therefore, the number of distribution devices 13 _{1 to} 13 ₆ participating in the combination calculation, that is, the number of articles X. As a result, the probability of obtaining a combination that matches or is close to the predetermined total weight is kept high.

[0055] By selecting a combination of articles X ... X in step S29, the distribution control unit 16f, a signal to activate the cylinder 13 ₁ C～13 ₆ c of the sorter _{131-134 6} selected output to pusher 13 ₁ b~13 ₆ b a is advanced toward the article X ... X in the sorting conveyor 13 ₁ a~13 ₆ a, article X ... X a sorting conveyor 13 ₁ a~13 ₆ a
It is distributed from above to the collecting conveyor 17 (step S30). In this case, by setting the advancing stroke of the sorter _131-134 cylinder 13 every _{6 1 c~13 6} timing and the pusher 13 ₁ actuates the c b~13 ₆ b, the set of articles X ... X It is possible to assemble compactly on a conveyor.

[0056] Then, successively the article X to the sorter _{131-134 6} sorter _{131-134 6} emptied by operation of the
... so that X and its weighing value move, the distribution device 13 ₁
To 13 ₆ That sorting conveyor 13 ₁ a~13 ₆ a on which actuates the (step S31), repeatedly executes the subsequent control returns to step S28. In order to end the combination weighing operation, the operation start button is pressed again.

Although the description of the case of executing the mix weighing or the parent-child weighing is omitted, the control is performed substantially according to the combination weighing.

As described in detail in the above embodiment, the switching unit 16e of the control unit 16 performs the rank selection, the weight check, or the combination weighing with a single apparatus having a single weighing conveyor 12. A selectable general-purpose weighing device 1 is realized.

In this case, the articles X... X that are horizontally conveyed on the take-in conveyor 11, the weighing conveyor 12, and the distribution conveyors 13 ₁ a to 13 ₆ a are fed to the pushers 13 of the distribution devices 13 _{1 to} 13 ₆ . _{1 b~13 6} b, the discharge chute 15 _{1-15 6} or collection conveyor 17 while maintaining its attitude
It is distributed to.

Next, a weighing system having two weighing devices will be described as a second embodiment according to the present invention.

As shown in FIG. 6, this weighing system 21
Means that the two weighing devices 110 and 110 are
7 are arranged in parallel so as to face each other, and as shown in FIG. 7, the control units 116 and 116 of the weighing devices 110 and 110 are connected to each other so that data can be exchanged with each other. It has been. The weighing device 11
Although the reference numerals 0, 110 to the control units 116, 116 are different from each other, the configuration is the same as that of the weighing device 1 to the control unit 16 in the first embodiment, and thus the detailed description is omitted.

In the weighing system 21, the right and left sorting devices 113 _{1 to} 113 ₆ sandwiching the collecting conveyor 117,
113 _{1-113 6,} two of the articles X ... X, which has been conveyed respectively through the intake conveyor 111 and the metering conveyor 112, 112 as indicated by the arrow A, the Y ... Y by the arrow b or arrow c As shown in the drawing, the sheet is sorted on the collecting conveyor 117, and is discharged by the collecting conveyor 117 as indicated by an arrow d.

According to the example shown in the figure, the articles XX are supplied to the weighing device 110 disposed on the left side of the collecting conveyor 117, and the articles Y ... Y are supplied to the weighing device 110 disposed on the right side.
And the selected left sorter 113 ₂ , 113 ₄
By operating the right and left distribution devices 113 ₅ and 113 ₆ , it is possible to execute mix weighing in which two kinds of articles X, X and articles Y, Y are respectively combined to obtain a predetermined total weight.

In the weighing system 21, the articles XX are supplied to one of the weighing apparatuses 110 and the articles Y ... Y are supplied to the other weighing apparatus 110, so that the selected left and right sorting apparatuses 113 ₁ to 113 ₁ are arranged. by actuating the 113 _6, 113 ₁ to 113 _6, always contains a single article X, a combination of a plurality of articles Y ... Y of the article X and the other to perform the parent-child weighing to a predetermined total weight be able to. further,
One kind of article X... X is supplied to the left and right weighing devices 110, 110, respectively, and the selected left and right distribution devices 113 ₁ to 113 _1.
By activating the 13 _6, 113 ₁ to 113 _6,
It is possible to execute combination weighing by combining the articles X... X to obtain a predetermined total weight.

[0065] In this case, the sorting apparatus 113 ₁ to 113 ₆ provided in the metering system 21, 113 ₁ to 113 _6,
By doubling the weight of one weighing device 110, for example, when performing combination weighing with the weighing system 21, the number of articles participating in the combination calculation is doubled, so that the weight matches the target weight or is close to the target weight. The probability of obtaining a combination increases.

The description of the case where rank sorting or weight check is executed by the weighing system 21 is omitted, but the weighing conveyors 112 and 112 and the sorting devices 113 _{1 to} 113 ₆ provided in the weighing system 21 are omitted.
Since 113 _{1 to} 113 ₆ are twice as large as one weighing device 110, the article processing capacity is doubled.

The weighing devices 1, 11 according to the present invention
In the case of supplying the seafood and the like in the 0, 110 and the weighing system 21, it is necessary to prevent germs from growing in particular. In such a case, the drive source such as the weight detector 12a to which the electric wiring is connected and the drive motor of the transport mechanism are housed in a waterproof case. Also, by making the predetermined components, for example, made of stainless steel, these components will not rust even if washing is repeated.

In order to facilitate boiling disinfection,
Conveyors 11, 111, 111, weighing conveyor 12,
112, 112 and sorting conveyor 13₁a-13₆a, 1
13 ₁a-113₆a, 113₁a-113₆used for a
Removable flat belt, and furthermore, the flat bell
The material of the material may be suitable for boiling disinfection.

Then, the weighing conveyors 12, 112,
For example, instead of a flat belt type conveyor, a walking beam type conveyor may be used as 112.

Further, the above-mentioned sorting devices 13 _{1 to} 13 ₆ , 113
_{1-113 6,} 113 ₁ to 113 although the ₆ uses a sorting mechanism of the pusher type, as being capable of holding the posture of the article when other sorting, driven in a direction perpendicular to the conveying direction of the sorting conveyor A fin type that sorts articles with claw-shaped fins, a drop belt type that sorts articles by moving the downstream side up and down with the upstream side of the sorting conveyor as a fulcrum, and is provided further downstream of the sorting conveyor and moves up and down A distribution mechanism such as a drop flap type in which articles are distributed by flaps and a slide type in which articles are distributed by a caterpillar belt provided on a transport conveyor can be applied.

Further, the distribution devices 13 _{1 to} 13 ₆ , 11
3 instead of the ₁ to 113 _6, 113 ₁ to 113 _6, it can be used bucket type of sorting device for distributing articles in a plurality of buckets containing the article to tip over each in one direction at a predetermined position.

Each of the distribution devices 13 _{1 to} 13 ₆ , 113 ₁
To 113 _6, 113 ₁ to 113 on the article loading side near the ₆ established the article sensor of photoelectric type, respectively, the article sensor and the article sensor 14a, based on the article passing signal by the 14b, the distributing device 13 ₁ to 13 _6, 113 ₁ to 113 _6, 1
13 _{1-113 6} actuation may be controlled for. By doing so, it becomes possible to sort out a predetermined article more reliably.

Then, each of the sorting devices 13 _{1 to} 13 ₆ , 113
_{1-113 6,} 113 ₁ to 113 in an article discharge side near the ₆ established the article sensor of photoelectric type, respectively, may be detected whether an article has been distributed reliably. Further, based on the article passing signal obtained in this way, the control units 16, 116, 116 may be caused to execute an alarm operation.

[0074]

As described above, according to the present invention,
While being a single weighing device with a single weighing mechanism,
A general-purpose weighing device including at least two of the combination weighing unit, the rank selecting unit, and the weight checking unit, and a general-purpose weighing system having two weighing devices are realized. Therefore, installation space and equipment costs can be reduced. In addition, since combination weighing, rank selection, and weight check can be performed while maintaining the posture of the article, the trouble of article handling in the downstream process can be omitted. INDUSTRIAL APPLICABILITY The present invention is particularly suitable for an article weighing field in which it is required to maintain an article posture.

[Brief description of the drawings]

FIG. 1 is a plan view schematically showing an overall configuration of a weighing device as a first embodiment of the present invention.

FIG. 2 is a control system diagram.

FIG. 3 is a flowchart illustrating an example of control when executing rank selection.

FIG. 4 is a flowchart illustrating a control example when a weight check is performed.

FIG. 5 is a flowchart illustrating a control example when performing combination weighing;

FIG. 6 is a plan view schematically showing the entire configuration of a weighing system according to a second embodiment of the present invention.

FIG. 7 is a control system diagram.

[Explanation of symbols]

1,110 Measuring device 12,112 Measuring conveyor 13 _{1 to} 13 ₆ , 113 _{1 to} 113 ₆ Sorting device 16,116 Control unit 16e Switching unit 17,117 Assembly conveyor 21 Weighing system X, Y Article

Claims (5)

[Claims] 1. A single weighing mechanism for transporting and weighing articles horizontally, and a plurality of weighing mechanisms sequentially arranged downstream of the weighing mechanism in the transport direction for transporting a plurality of articles horizontally and sorting the articles out of a transport path. A weighing device having an article sorting mechanism,
Combination weighing means for operating the sorting mechanism corresponding to the combination calculation result based on the weight of the plurality of articles obtained by the weighing mechanism; and the combination weighing means corresponding to the rank selection result based on the weight of the article obtained by the weighing mechanism. At least two of rank selecting means for operating the sorting mechanism and weight checking means for operating the sorting mechanism according to the weight check result based on the weight of the article obtained by the weighing mechanism.
A weighing device, comprising: two means; and switching means for switching the operation of these means. 2. A weighing system having at least two weighing devices according to claim 1 provided with at least combination weighing means, wherein said combination weighing means is based on the weight of articles by said two weighing devices. Mix weighing is possible by combining the products of
A weighing system, further comprising a collecting means for collecting articles distributed outside the transport path of the weighing devices between the two weighing devices arranged in parallel. 3. A weighing system having at least two weighing devices according to claim 1 provided with at least combination weighing means, wherein said combination weighing means is of two types based on the weight of articles by said two weighing devices. The parent and child weighing, which always includes a single one of the articles, and combines the article with a plurality of the other articles to have a predetermined total weight, and is arranged in parallel A weighing system, comprising: a collection unit that collects articles sorted out of a transport path of the weighing device between two weighing devices. 4. A weighing system having at least two weighing devices according to claim 1 provided with at least combination weighing means, wherein said combination weighing means is one type based on the weight of articles by said two weighing devices. Combined weighing can be performed by combining the above two articles by the two weighing apparatuses as a whole to a predetermined total weight, and these weighing apparatuses are arranged between the two weighing apparatuses arranged in parallel. A weighing system, comprising: collecting means for collecting articles sorted out of a transport path. 5. A weighing system having at least two weighing devices according to claim 1 provided with at least combination weighing means, wherein said combination weighing means is provided with two kinds of weights based on the weight of articles by said two weighing devices. And a combination of each of the two types of articles, and always includes a single article of one of the two types of articles, and combines the article with a plurality of other articles to obtain a predetermined total weight. At least two of parent-child weighing and combination weighing that combine one kind of article by the two weighing devices to obtain a predetermined total weight are enabled, and the two weighing devices are arranged in parallel. A weighing system, comprising: collecting means for collecting articles sorted out of the conveying paths of the weighing devices between the weighing devices.