JP6777964B2 - Weight sorter - Google Patents

Description

The present invention relates to a weight sorter that weighs an article to be inspected while transporting it and sorts it into a non-defective product in the appropriate weight range and a defective product outside the appropriate weight range.

The weight sorter weighs the article to be inspected while transporting it by a weighing means such as a measuring conveyor, and depending on whether or not the weight of the weighed article to be inspected is within an appropriate weight range, it is located on the downstream side of the weighing means. The article to be inspected is sorted and sorted by the sorting device.

In order to specify the appropriate weight range, for example, a reference weight value, an upper limit allowable value and a lower limit allowable value are set, and in the weight sorter, (reference weight value-lower limit allowable value) to ( The range of (reference weight value + upper limit allowable value) is set as the appropriate weight range, and if the weight of the article to be inspected is within the appropriate weight range, it is judged as a non-defective product and transported to the next process. Judge it as a defective product and remove it from the transport line.

In Patent Document 1, in order to determine an appropriate weight range, a plurality of samples inspected articles determined to be in the appropriate weight range by static weighing are prepared in advance, a sample test operation mode is set, and a plurality of samples are set. The articles to be inspected are sequentially weighed while being conveyed one by one by a weighing conveyor, the minimum value of the obtained weighing data is set as the lower limit value of the appropriate weight range, and the maximum value of the weighing data is set as the upper limit value of the appropriate weight range. The weight sorter to be set as is described.

Japanese Unexamined Patent Publication No. 2010-12414

In the weight sorter, for example, a wide variety of small quantities of products such as miscellaneous goods and small items may be sorted.

In such products such as miscellaneous goods and small items, storage items such as instruction manuals are bundled in the packaging body such as the packaging box or packaging bag, or the product itself has a container such as a bag and is inside the container. There is a product that becomes a finished product when the stored items are stored in.

Due to the high variety and small quantity, the work of storing the stored items in the packaging body or the like is often performed manually, not familiar with the work by a machine. By hand, there may be a mistake in storing the stored items, that is, a mistake in storing the stored items or a mistake in inserting the number of stored items.

For this reason, a weight sorter sorts a wide variety of small quantities of products such as miscellaneous goods and small items in which stored items are stored into non-defective products in which a predetermined number of stored items are stored and defective products in which a predetermined number of stored items are not stored. May be done.

When such high-mix low-volume products are to be sorted, it is necessary to set the appropriate weight range for each product of each type.

Generally, in this setting work, the operator weighs each of a plurality of non-defective products in which a predetermined number of stored articles are stored, calculates the average weight value of one non-defective product, and serves as a reference for an appropriate weight range. Enter the value as the reference weight value into the weight sorter by operating the numeric keypad.

Further, the operator weighs one piece of the stored article, calculates the upper limit allowable value and the lower limit allowable value with respect to the reference weight value based on the weight value of one piece of the stored article, and uses the numerical value as the numeric keypad. To input to the weight sorter. The appropriate weight range is determined by inputting the reference weight value and the upper and lower limit allowable values.

In this way, for each product of each type, the weights of a plurality of non-defective products are weighed to calculate an average weight value, and the value is input as a reference weight value by operating the numeric keypad, and further, the weight of the stored article. It is troublesome and troublesome to measure, calculate the upper and lower limit allowable values, and input the numerical values by operating the numeric keypad.

On the other hand, in Patent Document 1, a plurality of sample inspected articles determined to be in an appropriate weight range by static weighing are prepared in advance, a sample test operation mode is set, and a plurality of sample inspected articles are provided. , The minimum value of the obtained weighing data is set as the lower limit value of the appropriate weight range, and the maximum value of the weighing data is set as the upper limit value of the appropriate weight range. However, it is not necessary to weigh a plurality of non-defective products and stored articles, calculate a reference weight value and an upper / lower limit allowable value, and input the values by operating the numeric keypad.

However, in Patent Document 1, it is necessary to set the sample test operation mode and sequentially weigh a plurality of sample articles to be inspected one by one while actually transporting them by a measuring conveyor, resulting in poor work efficiency.

The present invention has been made in view of the above points, and makes it possible to efficiently set an appropriate weight range for sorting an article to be inspected into a non-defective product and a defective product. The purpose.

In order to achieve the above object, the present invention is configured as follows.

(1) The weight sorter of the present invention is provided with a weighing means capable of weighing while transporting an article and capable of weighing in a stationary state without transporting the article , and is the same as the product body and the product body. The goods to be inspected, which are composed of the stored goods to be packed, are weighed while being transported, and the goods to be inspected are bundled with the non-defective product in which the stored goods are bundled in a predetermined number and the stored goods in the predetermined number. It is a weight sorter that sorts out defective products that have not been made .
Weight value of the inspection article to be weighed while being transported by the previous SL metering means, when in a suitable amount by weight range, said the article to be inspected, it is determined that the previous KiRyo products, when not in the appropriate amount by weight range , the object to be inspected article and determining acceptability judging section that the front Symbol defective,
A suitable weight range determining unit for determining the appropriate weight range is provided.
The appropriate weight range determination unit is based on a plurality of weight values of the non-defective product and at least one weight value of the stored article, which are weighed by the weighing means in the stationary state. To determine.

The article to be inspected is an article in which the main body of the article to be inspected is packaged in a packaging body such as a packaging box or a packaging bag, and a predetermined number of stored articles are stored in the packaging body. Alternatively, the article to be inspected itself has a container such as a bag, and the article to be inspected becomes a finished product by storing a predetermined number of stored articles in the container. May be good.

The stored article is an article for constituting the article to be inspected, and is an article stored in the package or the container.

According to the weight sorter of the present invention, the appropriate weight range for determining the quality of the article to be inspected is a plurality of weight values of the non-defective product, which are weighed by the weighing means in a stationary state by the appropriate weight range determining unit. And at least one weight value of the stored article.

That is, the appropriate weight range determination unit can determine a reference weight value that serves as a reference for the appropriate weight range based on a plurality of weight values of non-defective products in which a predetermined number of stored articles are included . The upper limit tolerance and the lower limit tolerance with respect to the reference weight value can be determined based on one weight value.

In this way, the appropriate weight range determination unit automatically determines the appropriate weight range based on the plurality of weight values of the non-defective product and the weight value of at least one of the stored articles, which are weighed by the weighing means in a stationary state. In order to set an appropriate weight range, the operator weighs each of the plurality of non-defective products, calculates the average weight value, and operates the numeric keypad to determine the average weight value. It is not necessary to input as a value, further weigh the stored article, calculate the upper and lower allowable values, and input the value by operating the numeric keypad. Further, since the weight of the plurality of non-defective products and the weight of at least one of the stored articles are weighed by the weighing means in a stationary state without being conveyed, a plurality of sample articles to be inspected can be used as in Patent Document 1. There is no need to perform troublesome work such as sequentially weighing while transporting one by one with a weighing conveyor.

(2) In a preferred embodiment of the present invention, the predetermined number is one, and the defective product is a missing item in which the stored article is not included , or two or more of the stored articles are included. The appropriate weight range determining unit is based on a plurality of weight values of the non-defective product and at least one weight value of the stored article, which are weighed by the weighing means in a stationary state. The appropriate weight range is determined, or the weight value of the missing item and the weight value of at least one of the stored articles, which are weighed by the weighing means in the stationary state, are used. , The appropriate weight range is determined.

Since the predetermined number is one, two or more stored items are not included in the non-defective item to be inspected.

Further, since the predetermined number is one, the defective is a shortage of stored articles are not included, and excess products stored articles is more than ENCLOSED.

In the appropriate weight range determination unit, it is preferable to determine the reference weight value that is the reference of the appropriate weight range based on the plurality of weight values of the non-defective product in which one stored article is included, but the stored article is the same. A reference weight value that serves as a reference for an appropriate weight range may be determined based on a plurality of weight values of unpackaged missing items.

According to this embodiment, the non-defective stored articles is one included, shortage stored articles are not included, or the excess articles stored articles is more than bundled and defective products The appropriate weight range for determination is automatically determined by the appropriate weight range determination unit based on a plurality of weight values of non-defective products and at least one weight value of stored articles, or a plurality of missing items. It is automatically determined based on the weight value of the item and the weight value of at least one of the stored items.

As a result, in order to set an appropriate weight range, the operator weighs each of the plurality of non-defective products and the weight of the stored article, calculates the reference weight value and the upper and lower limit allowable values, and sets the values. There is no need to operate the numeric keypad to input. Further, unlike Patent Document 1, it is not necessary to perform the troublesome work of sequentially weighing a plurality of sample articles to be inspected while transporting them one by one by a measuring conveyor.

(3) In another embodiment of the present invention, the measuring means has a measuring conveyor for carrying an article, and the measuring means is in a state where the measuring conveyor is stopped and the article is stationary without being conveyed. Weighing is possible, and the appropriate weight range determining unit is based on the weight value measured by the weighing means in a state where all of the plurality of good products are placed on the measuring conveyor in a stopped state. Then, the average weight value of one of the non-defective products is calculated as a reference weight value, and the weight is measured by the weighing means with one of the stored articles placed on the measuring conveyor in the stopped state. Based on the weight value, the upper limit allowable value and the lower limit allowable value with respect to the reference weight value are calculated, respectively, to determine the appropriate weight range.

According to this embodiment, the appropriate weight range determining unit is the average weight of one non-defective product based on the weight value to be weighed in a state where all of the plurality of non-defective products are placed on the measuring conveyor in the stopped state. The value is calculated as a reference weight value, and the upper limit and the lower limit with respect to the reference weight value are calculated based on the weight value to be weighed with one of the stored articles placed on the measuring conveyor in the stopped state. Since the permissible values are calculated and the appropriate weight range is determined, all of the plurality of non-defective products are placed and weighed on the stopped weighing conveyor, and the stored articles 1 are placed on the stopped weighing conveyor. If the pieces are placed and weighed, the appropriate weight range will be automatically determined.

Therefore, the operator weighs each of the plurality of non-defective products, calculates the average weight value, inputs the value as the reference weight value by operating the numeric keypad, or weighs the stored article. The work of calculating the allowable values of the upper and lower limits and inputting the values by operating the numeric keypad becomes unnecessary, and the work of setting the appropriate weight range can be performed efficiently.

(4) In still another embodiment of the present invention, in a state where all of the plurality of good products are placed on the measuring conveyor in a stopped state, the first operation is performed and the stored article is stored. The one is provided with an operation unit for which a second operation is performed while the one is placed on the measuring conveyor in a stopped state, and the appropriate weight range determination unit responds to the first operation of the operation unit. Then, the weight value weighed by the weighing means is acquired to calculate the reference weight value, and in response to the second operation of the operating unit, the weight value measured by the weighing means is acquired and said. The upper limit allowable value and the lower limit allowable value are calculated respectively.

According to this embodiment, when the operator operates the operation unit to perform the first operation with all of the plurality of non-defective products placed on the measuring conveyor in the stopped state, the appropriate weight range determination unit is released. , The weight value measured by the weighing means is acquired as a plurality of weight values of good products, the average weight value of one good product is calculated as a reference weight value, and the operator stops one of the stored articles. When the operation unit is operated to perform the second operation while the weight is placed on the weighing conveyor, the appropriate weight range determining unit performs the upper limit allowable value with respect to the reference weight value based on the weight value measured by the weighing means. And the lower limit allowable value are calculated respectively, and the appropriate weight range is automatically determined. As a result, the worker weighs a plurality of non-defective products to calculate the average weight value, inputs the value as a reference weight value by operating the numeric keypad, or weighs the stored article. The work of calculating the upper and lower limit allowable values and inputting the values by operating the numeric keypad becomes unnecessary, and the work of setting the appropriate weight range becomes easy.

(5) In one embodiment of the present invention, the appropriate weight range determining unit is weighed by the weighing means in a state where the one of the stored articles is placed on the measuring conveyor in a stopped state. The upper limit allowable value and the lower limit allowable value with respect to the reference weight value are calculated by multiplying the weight value by each coefficient value, and the setting operation unit operated to set each coefficient value is operated. Be prepared.

The setting operation unit for setting each coefficient value may also be used as the operation unit for performing the first operation and the second operation.

According to this embodiment, the upper limit allowable value and the lower limit allowable value can be changed by operating the setting operation unit to change the coefficient value according to the variation in the weight of the non-defective product or the stored article. Thereby, an appropriate appropriate weight range can be determined according to the variation in the weight of the non-defective product and the stored article.

(6) In another embodiment of the present invention, the predetermined number is one, the defective product is a missing product in which the stored article is not included , and the appropriate weight range determining unit is stationary. Based on the plurality of weight values of the non-defective product and the weight value of at least one of the stored articles, which are weighed by the weighing means in the state of being allowed to stand, the appropriate weight range is determined or the weight range is stationary. The appropriate weight range is determined based on the plurality of weight values of the missing item and the weight value of at least one of the stored articles, which are weighed by the measuring means in the state.

As for the article to be inspected, for example, there is no space for bundling two or more stored items, and the defective item is not an overdose item and only a missing item in which the stored item is not included .

According to this embodiment, the appropriate weight range for determining a non-defective product in which one stored article is included and a defective product in which the stored article is not included is determined by the appropriate weight range determining unit. Automatically determined based on multiple weight values of non-defective products and at least one weight value of stored goods, or based on multiple weight values of missing items and at least one weight value of stored goods Is automatically determined.

(7) In a preferred embodiment of the present invention, the weighing means has a measuring conveyor for transporting an article, and the weighing means measures the weight in a stationary state without stopping the measuring conveyor and transporting the article. The appropriate weight range determination unit is based on the weight value measured by the weighing means in a state where all of the plurality of good products are placed on the measuring conveyor in a stopped state. , The average weight value of one of the non-defective products is calculated as a reference weight value, and the weight measured by the weighing means with one of the stored articles placed on the measuring conveyor in the stopped state. Based on the value, the lower limit allowable value with respect to the reference weight value is calculated to determine the appropriate weight range.

According to this embodiment, the appropriate weight range determining unit is the average weight of one non-defective product based on the weight value to be weighed in a state where all of the plurality of non-defective products are placed on the measuring conveyor in the stopped state. The value is calculated as a reference weight value, and the lower limit allowable value for the reference weight value is calculated based on the weight value to be weighed with one of the stored articles placed on the measuring conveyor in the stopped state. Then, since the appropriate weight range is determined, all of the plurality of non-defective products are placed and weighed on the stopped weighing conveyor, and one of the stored articles is placed on the stopped weighing conveyor. If weighed in, the appropriate weight range will be determined automatically.

As the defective because stored articles has only shortage not shipped, it is not necessary to calculate the upper limit allowable value, by the reference weight value and the lower limit acceptable value, determining an appropriate amount by weight range it can.

According to the present invention, the appropriate weight range for determining the quality of the article to be inspected is determined by the appropriate weight range determining unit based on a plurality of weight values of the non-defective product and at least one weight value of the stored article. Therefore, in order to set an appropriate weight range, the operator weighs the non-defective product and the stored article, calculates the reference weight value and the upper and lower limit allowable values, and inputs the values by operating the numeric keypad. Such work becomes unnecessary. Further, since the weight of the plurality of non-defective products and the weight of at least one of the stored articles are weighed by the weighing means in a stationary state without being conveyed, a plurality of sample articles to be inspected can be used as in Patent Document 1. There is no need to perform troublesome work such as sequentially weighing while transporting one by one with a weighing conveyor.

FIG. 1 is a diagram showing a schematic configuration of a weight sorter according to an embodiment of the present invention. FIG. 2 is a diagram for explaining an appropriate weight range. FIG. 3 is a diagram showing an example of a first screen for setting an appropriate weight range of the operation setting display. FIG. 4 is a diagram showing an example of a second screen for setting an appropriate weight range of the operation setting display. FIG. 5 is a diagram showing an example of a third screen for setting an appropriate weight range of the operation setting display. FIG. 6 is a flowchart for explaining the operation of the embodiment of FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a schematic configuration diagram of a weight sorter according to an embodiment of the present invention. The weight sorter 1 of this embodiment includes a weight sensor 5 such as a load cell, a control device 6, and a load cell that detects the weight of the article 4 to be sorted, which is conveyed by the feed conveyor 2, the measuring conveyor 3, and the measuring conveyor 3. It also includes an operation setting display 10.

The article 4 to be inspected is a high-mix low-volume product such as miscellaneous goods and small items. This product is a product in which the main body of the product is packaged by a packaging body such as a packaging box or a packaging bag, and a predetermined number of stored items, in this example, a part of the instruction manual of the product is a packaging body. It is included in. In the item 4 to be inspected, there is a mistake in inserting the instruction manual, which is a stored item, specifically, a missing item for which the instruction manual has been forgotten, or an overdose item containing two or more copies of the instruction manual. There are good products.

A sorting device 7 is arranged on the downstream side of the weight sorter 1 in the transport direction (right direction in the figure) of the article 4 to be inspected. The sorting device 7 includes a sorting conveyor 8 and a sorting arm 9 for sorting the article 4 to be inspected on the sorting conveyor 8.

The conveyors 2, 3 and 8 are driven by drive motors (not shown).

The weight sorter 1 feeds the articles 4 to be inspected one by one to the measuring conveyor 3 by the feeding conveyor 2, weighs the articles 4 to be inspected on the measuring conveyor 3 while transporting the articles 4, and the weight value thereof. However, it is determined whether or not the weight is within the appropriate weight range, and the quality of the article 4 to be inspected is determined.

That is, when the weight value of the article 4 to be weighed is in the appropriate weight range, the weight sorter 1 determines that a part of the instruction manual is a non-defective product included in the instruction manual, and when it is not in the appropriate weight range. , It is judged that the product is out of stock for which the instruction manual is not included, or is an overdose product for which two or more copies of the instruction manual are included.

Based on this determination result, the weight sorter 1 sorts the inspected article 4 into a non-defective product and a defective product by the sorting device 7.

The control device 6 includes an A / D conversion unit 11 that converts an analog load signal from the weight sensor 5 into a digital load signal, a control unit 12 composed of, for example, a microcomputer, and the conveyors 2, 3 and 8 described above. It includes a conveyor drive circuit unit 13 that drives each drive motor, and a distribution arm drive circuit unit 14 that drives the distribution arm 9 of the distribution device 7. The control unit 12 has a CPU and a memory such as a RAM or a ROM.

The control unit 12 is given a detection output of an article detection sensor 17 including a photoelectric sensor or the like that detects the article 4 to be inspected immediately before being sent to the measuring conveyor 3. The memory of the control unit 12 is composed of a program memory for storing a control program, a data memory for storing data required for calculation, data set by the operation of the operation setting display 10, and other memories.

The operation setting display 10 is, for example, a touch panel type setting display, and by touching an operation key or the like displayed on the display screen, the operation of the weight sorter 1 can be started / stopped, and an appropriate amount described later. It has a function as an operation unit that performs various operations necessary for determining the weight range, and also displays an operation result and an operation procedure for determining an appropriate weight range in an interactive guidance display.

The control unit 12 controls the operation of the weight sorter 1 according to the control program stored in the memory. The control unit 12 calculates the weight value of the article 4 to be inspected on the measuring conveyor 3 based on the digital load signal from the A / D conversion unit 11. The control unit 12, together with the measuring conveyor 3, the weight sensor 5, and the A / D conversion unit 11, constitutes a measuring means for measuring the weight of the article on the measuring conveyor 3.

The control unit 12 has a function as a quality determination unit 15 that determines whether or not the calculated weight value of the article 4 to be inspected is a non-defective product depending on whether or not it is within an appropriate weight range.

Further, the control unit 12 has a function as an appropriate weight range determining unit 16 for determining an appropriate weight range as described later. The control unit 12 sets the detection output of the article detection sensor 17 for detecting the loading of the article 4 to be inspected into the measuring conveyor 3 as a predetermined reference time point, acquires the weight value of the article 4 to be inspected, and determines the quality. Do.

As a result of the determination, the control unit 112 issues a sorting command so that when the defective product is not a good product, that is, it is a defective product to be sorted, the defective product can be sorted when it reaches the sorting position of the sorting conveyor 8. Output to the distribution arm drive circuit unit 14. As a result, when the defective product reaches the distribution position on the distribution conveyor 8, the distribution device 7 removes the defective product from the transport line by the distribution arm 9 and distributes the defective product. Further, when it is a good product, since it is not necessary to sort it, the sorting command is not output to the sorting arm drive circuit unit 14, and the good product is conveyed downstream without being sorted by the sorting device 7.

In this embodiment, the work of setting an appropriate weight range for determining whether the product is a non-defective product or a defective product can be efficiently performed.

Here, the appropriate weight range will be described. FIG. 2 is a diagram for explaining the determination of an appropriate weight range, and in the figure, the vertical axis represents the weight.

Since it is considered that the weight values of non-defective products are normally distributed around the average weight value Wa, the lower limit allowable value and the upper limit allowable value are defined by using this average weight value Wa as the reference weight value Wb.

For one stored articles is average weight value Wa of the enclosing good, average weight value of the stored articles are shipped with non shortage, smaller by weight w for one piece of stored articles to be accommodated (Wa-w). In addition, the average weight value of the overdose product in which two stored items, which is one more than the non-defective product, is included is larger by the weight w of one stored item (Wa + w).

In this embodiment, one of stored articles as described above a plurality of average weight value Wa of the enclosing non-defective, the reference weight value Wb as a reference of an appropriate amount by weight ranging W _R.

The lower limit W _L of the appropriate amount by weight ranging W _R, an intermediate weight value between the average weight value Wa and the average weight value of the shortage of good (Wa-w), i.e., the weight of the stored articles from the average weight value Wa of good The weight value (Wa-w / 2) is obtained by subtracting the weight value of 1/2 of the value w. The upper limit W _U appropriate amount by weight ranging W _R, an intermediate of the weight of the average weight value Wa and the average weight value of the excess products good and (Wa + w), i.e., the weight of the stored articles to average weight value Wa of good The weight value (Wa + w / 2) is obtained by adding the weight value of 1/2 of the value w.

Therefore, an appropriate amount by weight ranging W _R will be defined as follows.
Basis weight value (Wb) - and lower tolerances (w / 2) ≦ qs weight ranges (W _R) ≦ basis weight value (Wb) + upper allowable value (w / 2)
In the example of FIG. 2, the upper limit allowable value and the lower limit allowable value with respect to the reference weight value Wb are both set to 1/2 the weight value w / 2 of the weight value w of one stored article, and this 1/2 is used. The default coefficient value is used. This default coefficient value 1/2 (= 0.5) can be changed and set as described later by operating the operation setting display 10 as the setting operation unit.

The control unit 12 responds to the first operation described later of the operation setting display 10, and when the measuring conveyor 3 is in the stopped state, the control unit 12 has a plurality of non-defective articles to be inspected 4 placed on the measuring conveyor 3. Is weighed, and the average weight value of one non-defective product is calculated from the weight values of the plurality of non-defective products to be weighed to obtain the reference weight value Wb.

Further, the control unit 12 responds to the second operation described later of the operation setting display 10, and when the measuring conveyor 3 is in the stopped state, the instruction manual which is a stored article placed on the measuring conveyor 3 Weigh one part and multiply the weight value w of one part of the weighed instruction manual by each coefficient value, for example, the default value 1/2, to the upper limit allowable value (w / 2) and the lower limit allowable value (w / 2) is calculated.

The setting of the reference weight value Wb and the upper and lower limit allowable values (w / 2) can be proceeded interactively according to the display of the operation setting display 10.

This setting operation will be described below.

First, the operator touches the key for setting the appropriate weight range in the normal operation screen displayed on the operation setting display 10 to set the reference weight value and the upper and lower limit allowable values shown in FIG. Call the first screen P1.

In the first screen P1, the weight value measured by the measuring conveyor 3 is displayed on the upper weight value display unit 20, and the weight value in a state where no article is placed on the measuring conveyor 3 below the weight value. Is displayed as the zero point correction key 21 operated to set the tare weight. In the area between the weight value display unit 20 and the zero point correction key 21, a message explaining a procedure for performing zero point correction is displayed. Specifically, for example, "Remove the article from the weighing conveyor and press the" Zero point correction "key. ] Is displayed.

The operator confirms that no article is placed on the measuring conveyor 3, and when the display of the weight value display unit 20 is not "0.00 g", determines that zero point correction is necessary, and determines that the zero point correction key is required. Touch 21 to perform zero point correction.

Below the zero point correction key 21, a set number display unit 22 for displaying the set number of non-defective articles to be inspected 4 to be placed on the stopped measuring conveyor 3 is provided in order to calculate the reference weight value. Up keys 23a and down keys 23b for changing the set number from the default value "3" are displayed on the left and right of the set number display unit 22.

Above the set number display unit 22, the up key 23a, and the down key 23b, a message prompting the setting of the number of non-defective articles to be inspected 4 to be placed on the stopped measuring conveyor 3 is displayed. Specifically, for example, "Please set the number of good products to be placed on the measuring conveyor. ] Is displayed.

The reference weight value setting key 24 is displayed below the set number display unit 22, and the operation procedure for setting the reference weight value in the area between the set number display unit 22 and the reference weight value setting key 24. Message is displayed. Specifically, for example, "Place the set number of good products on the weighing conveyor and press the" Standard weight value setting "key. ] Is displayed. The return key 25 is displayed in the lower right corner of the screen P1. The return key 25 is used when the work is stopped in the middle of the work and the screen P1 is returned to the original screen.

Looking at the first screen P1, the operator determines that zero point correction is necessary when the weight value of the weight value display unit 20 is not "0.00 g" when there is no article on the measuring conveyor 3. Then, the zero point correction key 21 is touch-operated to perform zero point correction. To change the number of non-defective articles to be inspected 4 placed on the weighing conveyor 3 from the default value "3" in order to set the reference weight value, touch the up key 23a or the down key 23b. And set the number. Next, the operator places the set number, in this example, the three non-defective articles to be inspected 4 prepared in advance on the measuring conveyor 3 in the stopped state, and determines the reference weight value. As one operation, the reference weight value setting key 24 is touch-operated.

As a result, the control unit 12 of the weight sorter 1 weighs the three non-defective articles 4 on the weighing conveyor 3 in the stopped state, and sets the weighed weight value to the set number of "3". By dividing, the average weight value of one piece of the article 4 to be inspected, which is a good product, is calculated, and the calculated average weight value is stored as a reference weight value. Further, instead of the first screen P1 of the operation setting display 10, the second screen P2 for setting the reference weight value & the upper and lower limit allowable values shown in FIG. 4 is displayed.

On the second screen P2, the weight values of the three weighed non-defective articles 4 to be inspected, in this example, "30.15 g" are displayed on the weight value display unit 20, and the reference weight value display unit below the weight value display unit 20. In 26, the weight value “30.15 g” displayed by the weight value display unit 20 is divided by “3”, which is the number of good products to be inspected on the measuring conveyor 3, that is, the weight value of the good product. The average weight value of one of the inspection articles 4, in this example, "10.05 g" is displayed as the reference weight value.

On the left and right below the reference weight value display unit 26, the upper limit allowable value coefficient display unit 27 and the lower limit allowable value display unit 27 for displaying the upper limit allowable value coefficient and the lower limit allowable value coefficient for defining the upper limit allowable value and the lower limit allowable value and the lower limit allowable value are displayed. A value coefficient display unit 28 is provided. On the left and right of each coefficient display unit 27, 28, up keys 29a, 30a and down keys 29b, 30b for changing each coefficient from the above 1/2, that is, "0.5", which is the default value, are respectively. Is displayed.

A message prompting the setting of each coefficient value for the upper and lower limit allowable values is displayed below the reference weight value display unit 26. Specifically, for example, "Set the upper limit allowable value coefficient and the lower limit allowable value coefficient. ] Is displayed.

The upper and lower limit allowable value setting keys 31 are displayed below the coefficient display units 27 and 28, and the upper and lower limit allowable values are displayed in the area between the coefficient display units 27 and 28 and the upper and lower limit allowable value setting keys 31. A message is displayed indicating the operation procedure for setting. Specifically, for example, "Take out the stored items from the non-defective item, place the stored items on the measuring conveyor, and press the" upper and lower limit allowable value setting "key. ] Is displayed.

When the operator looks at the second screen P2 and changes the coefficient for the upper and lower limit allowable values from the default value "0.5", the operator touches the up keys 29a and 30a or the down keys 29b and 30b. And set the coefficient. Next, the operator removes the three non-defective articles to be inspected 4 placed on the stopped measuring conveyor 3, and the instruction manual 1 which is a stored article taken out from one non-defective article 4 to be inspected. The unit is placed on the measuring conveyor 3 in the stopped state, and as a second operation for determining the upper and lower limit allowable values, the upper and lower limit allowable value setting keys 31 are touch-operated.

As a result, the control unit 12 of the weight sorter 1 weighs the weight of one part of the instruction manual on the measuring conveyor 3, and multiplies the weighed weight value by the upper limit allowable value coefficient and the lower limit allowable value coefficient, respectively. The upper limit tolerance and the lower limit tolerance are calculated, respectively, and the calculated upper limit tolerance and lower limit tolerance are stored. Further, instead of the second screen P2 of the operation setting display 10, the third screen P3 for setting the reference weight value & the upper and lower limit allowable values shown in FIG. 5 is displayed.

On the third screen P3, the weight value of one part of the weighed instruction manual, in this example, "1.80 g" is displayed on the weight value display unit 20, and the reference weight value display unit 26 below it displays the weight value. The weight value "10.05 g" calculated as described above is displayed, and the upper limit allowable value display unit 32 and the lower limit allowable value display unit 33 display the weight value of one part of the instruction manual, in this example, "1". ".80 g" is displayed as the upper limit allowable value coefficient and the lower limit allowable value coefficient, and in this example, "0.90 g" which is a value obtained by multiplying "0.5".

The redo key 34 and the OK key 35 are displayed below the lower limit allowable value display unit 33, and when the operator touches the OK key 35, the setting work of the reference weight value & the upper and lower limit allowable values is completed.

As a result, the reference weight value is set to "10.05 g", and the upper limit allowable value and the lower limit allowable value are set to "0.90 g".

Therefore, the appropriate weight range is (reference weight value-lower limit allowable value) = 10.05-0.90 = 9.15 or more, (reference weight value + upper limit allowable value) = 10.05 + 0.90 = 10.95 or less. It becomes.

That is, 9.15 ≤ (appropriate weight range) ≤ 10.95
Will be.

When the operator touches the redo key 34, he / she can return to the first screen P1 of FIG. 2 and can redo the setting of the reference weight value and the upper / lower limit allowable value.

When the setting of the reference weight value and the upper and lower limit allowable values is completed and the appropriate weight range is determined, the operation screen is returned to the original operation screen, and the operator can see 1 of the instruction manual placed on the stopped measuring conveyor 3. The part can be removed and normal operation can be started.

On the first screen P1 for setting the reference weight value and the upper and lower limit allowable values in FIG. 3, the number of non-defective products to be placed on the weighing conveyor 3 can be changed and set from the default values by the up key 23a and the down key 23b. On the second screen P2 for setting the reference weight value and the upper and lower limit allowable values in FIG. 4, the coefficient value for the upper and lower limit allowable values is changed and set from the default value by the up key and the down keys 29a, 29b; 30a, 30b. However, since it is rarely necessary for a general worker to change and set the default value, it may be locked with a password so that the manager can unlock it and change the default value. ..

FIG. 6 is a flowchart for explaining the operation of the above embodiment.

First, the operator touch-operates the key for setting the appropriate weight range in the normal operation screen displayed on the operation setting display 10, and in response to this touch operation, the reference weight value shown in FIG. 3 above. & The first screen P1 for setting the upper and lower limit weight values is displayed (step S1). On the first screen P1, the weight value measured by the measuring conveyor 3 is displayed (step S2), it is determined whether or not the zero point correction key 21 has been touched (ON) operated (step S3), and the zero point correction key 21 is used. When is not touch-operated, the process proceeds to step S5, and when the zero-point correction key 21 is touch-operated, zero-point correction processing is performed (step S4), and the process proceeds to step S5.

In step S5, the up key 23a or the down key 23b for changing the set number of articles to be inspected to be placed on the stopped measuring conveyor 3 is touched (ON) to change the number of non-defective articles 4 from the default value of 3. When it is determined whether or not the set number is changed and the up key 23a or down key 23b for changing the set number is not touch-operated, the process proceeds to step S7, and when the up key 23a or down key 23b for changing the set number is touch-operated, the number is increased. Along with performing the change process, the changed number of settings is displayed and the process proceeds to step S7 (step S6).

By the time the reference weight value setting key 24 is touched (ON) in the next step S7, the operator places the set number of non-defective articles to be inspected 4 on the stopped measuring conveyor 3.

In step S7, it is determined whether or not the reference weight value setting key 24 has been touched (ON), that is, whether or not the first operation for determining the reference weight value has been performed, and the reference weight value setting key 24 is pressed. When the touch operation is not performed, the process returns to step S2, and when the reference weight value setting key 24 is touch-operated, the process proceeds to step S8.

In step S8, the second screen P2 for setting the reference weight value and the upper and lower limit allowable values shown in FIG. 4 is displayed, and the set number of non-defective articles to be inspected are placed on the stopped measuring conveyor 3. Weigh and display the weight of 4 (step S9), divide the weight by the set number, and calculate the average weight value of one non-defective article 4 as the reference weight value (step S10). The reference weight value is displayed on the reference weight value display unit 26, and the process proceeds to step S12 (step S11).

In step S12, it is determined whether or not the up key 29a or the down key 29b for changing the upper limit allowable value coefficient from the default value of 1/2 = 0.5 has been touched (ON), and the upper limit allowable value is allowed. When the up key 29a or the down key 29b for changing the value coefficient is not touch-operated, the process proceeds to step S14, and when the up key 29a or the down key 29b for changing the upper limit allowable value coefficient is touch-operated, the process proceeds to step S14. The process for changing the upper limit allowable value coefficient is performed, the changed upper limit allowable value coefficient is displayed, and the process proceeds to step S14 (step S13).

In step S14, it is determined whether or not the up key 30a or the down key 30b for changing the lower limit allowable value coefficient from the default value of 1/2 = 0.5 has been touched (ON), and the lower limit allowable value is allowed. When the up key 30a or the down key 30b for changing the value coefficient is not touch-operated, the process proceeds to step S16, and when the up key 30a or the down key 30b for changing the lower limit allowable value coefficient is touch-operated, the process proceeds to step S16. The lower limit allowable value coefficient change process is performed, the changed lower limit allowable value coefficient is displayed, and the process proceeds to step S16 (step S15).

By the time the operator touches (ONs) the upper / lower limit allowable value setting key 31 in the next step S16, the operator removes the non-defective product 4 to be inspected on the stopped measuring conveyor 3 and removes the non-defective product 4 from the non-defective product 4. A part of the instruction manual, which is the stored item taken out, is placed on the measuring conveyor 3 in the stopped state.

In step S16, it is determined whether or not the upper and lower limit allowable value setting keys 31 have been touched (ON), that is, whether or not a second operation for determining the upper and lower limit allowable values has been performed, and the upper and lower limit allowable values are set. When the key 31 is not touch-operated, the process returns to step S9, and when the upper / lower limit allowable value setting key 31 is touch-operated, the third screen P3 for setting the reference weight value and the upper / lower limit allowable value shown in FIG. Is displayed (step S17), the weight of a part of the instruction manual on the stopped measuring conveyor 3 is weighed, the weight value is displayed on the weight value display unit 20 (step S18), and the process proceeds to step S19. ..

In step S19, the reference weight value is displayed on the reference weight value display unit 26 and the process proceeds to step S20. In step S20, the upper limit allowable value is set to the weight value of one part of the measured instruction manual for the upper limit allowable value. It is calculated by multiplying the coefficients, and the calculated upper limit allowable value is displayed on the upper limit allowable value display unit 32, and the process proceeds to step S21.

In step 21, the lower limit allowable value is calculated by multiplying the weight value of one part of the weighed instruction manual by the coefficient for the lower limit allowable value, and the calculated lower limit allowable value is displayed on the lower limit allowable value display unit 33. It is determined whether or not the redo key 34 has been touch-operated (step S22), and when the redo key 34 is touch-operated, the process returns to step S1, and when the redo key 34 is not touch-operated, the OK key 35 is touch-operated. It is determined whether or not (step S23), and when the OK key 35 is not touch-operated, the process returns to step S22, and when the OK key 35 is touch-operated, the process ends and returns to the original operation screen.

As described above, according to the present embodiment, a plurality of non-defective articles 4 to be inspected are placed on the metering conveyor 3 in the stopped state to weigh the weight in the stationary state, and the handling instructions for the stored articles. By placing a part of the manual on the weighing conveyor 3 in the stopped state and weighing in the stationary state, the reference weight value and the upper and lower limit allowable values are automatically calculated and the appropriate weight range is determined. ..

As a result, the worker weighs a plurality of non-defective articles 4 to be inspected, calculates the average weight value thereof, and inputs the value as the reference weight value by operating the numeric keypad, or the weight of the stored article. Is weighed, the upper and lower limit allowable values are calculated based on the weight value, and the work of inputting the numerical value by operating the numeric keypad becomes unnecessary, and the appropriate weight range can be easily set. Further, since the weight of the plurality of non-defective products and the weight of at least one of the stored articles are weighed in a state where the measuring conveyor 3 is stopped, a plurality of sample inspected articles are subjected to 1 as in Patent Document 1. There is no need to perform the troublesome work of sequentially weighing while transporting each piece on a weighing conveyor.

In the above embodiment, a plurality of non-defective articles to be inspected are weighed to determine an appropriate weight range, but as another embodiment of the present invention, a plurality of missing articles to be inspected are weighed. The appropriate weight range may be determined. In this case, for example, the average weight value of one missing item is calculated based on the weights of a plurality of items to be measured, and the weight value of one stored article is added to this average weight value. The weight value may be used as the reference weight value.

In the above embodiment, all of a plurality of non-defective articles to be inspected are placed on the stopped measuring conveyor 3 to calculate the average weight value. However, as another embodiment of the present invention, the non-defective article to be inspected is inspected. The articles may be placed one by one on the stopped measuring conveyor 3 and individually weighed, and the average weight value may be calculated from each of the plurality of weight values.

The inspection article, the stored articles, there is also that there is no more than shipped to space, in the case of such the article to be inspected, without calculating the upper limit allowable value, by the reference weight value and the lower limit acceptable value The appropriate weight range may be specified, or the coefficient value of the upper limit allowable value may be set to a large value so that there is substantially no upper limit allowable value.

In the above embodiment, only one stored article is weighed, but as with the non-defective inspected article, the weight of a plurality of stored articles is weighed and the average weight value of one stored article is calculated. The upper and lower limit allowable values may be calculated by calculation.

In the above embodiment, the non-defective product is an article to be inspected in which one stored article is included , but as another embodiment of the present invention, a non-defective product is included in a predetermined number of two or more stored articles. and test article, a predetermined number less than the stored articles are shipped with the inspection article to shortage defective, may be used as defective overdose products inspected articles stored articles beyond the predetermined number has been shipped.

The stored article is not limited to the above-mentioned instruction manual, and may be, for example, other articles such as an efficacy statement, an assembly manual, and a leaflet.

In the above embodiment, the article to be inspected is an article in a form of being packaged by a packaging body such as a packaging box or a packaging bag, and the stored article is an article to be bundled in the packaging body. , It itself has a container such as a bag, and an article that becomes a finished product by storing the stored article in the container, for example, an article in which a toy, a decorative tool, etc. is stored in the container. There may be.

1 Weight sorter 2 Feeding conveyor 3 Weighing conveyor 4 Inspected article 5 Weight sensor 6 Control device 7 Sorting device 10 Operation setting display 12 Control unit

Claims (7)

It is provided with a weighing means that can be weighed while transporting an article and can be weighed in a stationary state without transporting the article, and is composed of a product body and stored articles included in the product body. Weight sorting that weighs the items to be inspected while transporting them and sorts the items to be inspected into non-defective items in which a predetermined number of stored items are included and defective items in which the stored items are not included in a predetermined number. It ’s a machine,
Weight value of the inspection article to be weighed while being transported by the previous SL metering means, when in a suitable amount by weight range, said the article to be inspected, it is determined that the previous KiRyo products, when not in the appropriate amount by weight range , the object to be inspected article and determining acceptability judging section that the front Symbol defective,
A suitable weight range determining unit for determining the appropriate weight range is provided.
The appropriate weight range determination unit is based on a plurality of weight values of the non-defective product and at least one weight value of the stored article, which are weighed by the weighing means in the stationary state. To decide,
A weight sorter characterized by that. The predetermined number is one,
The defective product is a missing item in which the stored item is not included, or an overdose item in which two or more of the stored items are included.
The appropriate weight range determination unit is based on a plurality of weight values of the non-defective product and at least one weight value of the stored article, which are weighed by the weighing means in the stationary state. The appropriate weight range is determined based on the plurality of weight values of the missing item and the weight value of at least one of the stored articles, which are weighed by the weighing means in the stationary state. decide,
The weight sorter according to claim 1. The measuring means has a measuring conveyor for transporting articles, and the measuring means can measure in a stationary state without stopping the measuring conveyor and transporting articles.
The appropriate weight range determining unit is one of the good products based on the weight value measured by the measuring means in a state where all of the plurality of good products are placed on the measuring conveyor in the stopped state. The average weight value of the pieces is calculated as a reference weight value, and one of the stored articles is placed on the measuring conveyor in the stopped state, based on the weight value measured by the measuring means. The upper limit allowable value and the lower limit allowable value with respect to the reference weight value are calculated, respectively, to determine the appropriate weight range.
The weight sorter according to claim 1 or 2. The first operation is performed while all of the plurality of good products are placed on the measuring conveyor in the stopped state, and the one of the stored articles is placed on the measuring conveyor in the stopped state. It is equipped with an operation unit that allows the second operation to be performed while it is mounted.
In response to the first operation of the operation unit, the appropriate weight range determining unit acquires the weight value measured by the weighing means, calculates the reference weight value, and performs the second operation of the operation unit. In response to, the weight value weighed by the weighing means is acquired, and the upper limit allowable value and the lower limit allowable value are calculated, respectively.
The weight sorter according to claim 3. The appropriate weight range determining unit multiplies each coefficient value by the weight value measured by the measuring means in a state where the one of the stored articles is placed on the measuring conveyor in the stopped state. , The upper limit allowable value and the lower limit allowable value with respect to the reference weight value are calculated, respectively.
A setting operation unit operated to set each coefficient value is provided.
The weight sorter according to claim 3 or 4. The predetermined number is one,
The defective product is a missing product in which the stored article is not included .
The appropriate weight range determination unit is based on a plurality of weight values of the non-defective product and at least one weight value of the stored article, which are weighed by the weighing means in the stationary state. The appropriate weight range is determined based on the plurality of weight values of the missing item and the weight value of at least one of the stored articles, which are weighed by the weighing means in the stationary state. decide,
The weight sorter according to claim 1. The measuring means has a measuring conveyor for transporting articles, and the measuring means can measure in a stationary state without stopping the measuring conveyor and transporting articles.
The appropriate weight range determining unit is one of the good products based on the weight value measured by the measuring means in a state where all of the plurality of good products are placed on the measuring conveyor in the stopped state. The average weight value of the pieces is calculated as a reference weight value, and one of the stored articles is placed on the measuring conveyor in the stopped state, based on the weight value measured by the measuring means. The lower limit allowable value with respect to the reference weight value is calculated to determine the appropriate weight range.
The weight sorter according to claim 6.

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