JP2002179040A - Weighing and pricing apparatus and packaging, weighing and pricing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve workability of a weighing and pricing apparatus and a packaging, weighing and pricing apparatus without need of changing tray setting even if a tray is changed. SOLUTION: The weighing and pricing apparatus includes a storage means which stores, for each type of trays, a tare weight according to the tray type, a tray size detection means for detecting a size of the tray into which an article is to be received, a read-out means for specifying the tray type based on the detected tray size for reading the tare weight from the storage means, a price calculating means for calculating a net weight from a weight of the article and the tare weight which has been read and calculating a price of the article from the calculated net weight and a unit price of the article, a label printing means for printing information on the article including the calculated price on a label for issuing, and an application control means for controlling the application of the label to the article based on the detected tray size.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weighing apparatus and a weighing apparatus for weighing goods stored in a tray, and for attaching a label to the goods on the weighing conveyor. is there.

[0002]

2. Description of the Related Art Conventionally, a stretch wrapping machine for successively wrapping goods in a stretchable film, for example, in a state where a film is formed in a tubular shape and the product is contained in the tubular film. There is known a stretch wrapping machine that welds and cuts a rear portion of a product in the film to package the product. Since the packing machine sequentially packs the goods carried into the packing machine by a conveyor or the like, the processing capacity is high. Downstream of the packaging machine, a weighing conveyor and a labeling machine are arranged, and after weighing the packaged product, a label is attached to the product. In such a weighing conveyor or a labeling machine, as described below, in order to determine the net weight of a product or to attach a label to a predetermined position of a product, a tray (packaging container) on which the product is placed is used. You need to know the size.

Since the weighing conveyor measures the weight including the weight of the tray including the tare, the net weight of the product is obtained by subtracting the tare weight from the weighed value. Since the tare weight is determined by the size of the tray, it is necessary to know the size of the tray. Further, the position where the label is attached to the tray needs to be changed according to the dimension X in the flow direction and the dimension Y in the width direction of the tray T in FIG. 8 or according to the height Z of the tray T in FIG. Therefore, it is necessary to know the size of the tray when applying the label.

Therefore, conventionally, the tray No. The X, Y, and Z dimensions of the tray are stored in advance for each product, and the tray No. Is stored, and the product call No. Is entered, the tray N used for the product
o. The dimensions of the tray were called from to perform weighing and pricing.

[0005]

However, in the pack center, the tray to be used may be changed every day, and in such a case, the tray No. used for the product is changed each time.
It is troublesome to change the settings, and the workability is poor.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems. It is an object of the present invention to provide a weighing apparatus and a weighing apparatus for packaging which need to change the setting of a tray to be used even if the tray is changed. To improve workability.

[0007]

In order to achieve the above object, according to the present invention, there is provided a weighing conveyor for weighing goods stored in a tray, and a label on the goods on the weighing conveyor. Storage unit for storing a tare weight according to the type of tray, a tray size detection unit for detecting the size of the tray in which the product is stored, The type of the tray is specified based on the detected tray size, the reading means for reading out the tare weight from the storage means, and the net weight is calculated from the weight of the product and the read out tare weight. Price calculating means for calculating the price of the product from the net weight and the unit price of the product, label printing means for printing and issuing information on the product including the calculated price on a label, Characterized by comprising a sticking control means for controlling the application of labels for the product based on the size of the over.

[0008] The invention described in claim 2 is the first invention.
In the weighing device according to the above, the pasting control means,
The label attaching position and / or the label attaching posture for the product is controlled based on the detected tray size.

According to a third aspect of the present invention, there is provided a packaging machine for packaging goods stored in a tray, a weighing conveyor for weighing the goods packed by the packaging machine, and a product on the weighing conveyor. And a label attaching machine for attaching a label to the container, wherein a storage means for storing, for each type of tray, a tare weight corresponding to the type of tray, and a tray for storing goods. Tray size detecting means for detecting the size; reading means for specifying the type of tray based on the detected tray size and reading the tare weight from the storage means; and the weight of the product and the read tare weight Price calculating means for calculating the net weight from the calculated net weight and the unit price of the product, and printing and issuing information on the product including the calculated price on a label Label printing means, and sticking control means for controlling sticking of a label to the product based on the detected tray size, and controlling the operation of the packaging machine based on the detected tray size. It is characterized by having packaging control means.

[0010] The invention described in claim 4 is the invention according to claim 3.
Wherein the sticking control means controls a label sticking position and / or a label sticking position with respect to the commodity based on the detected tray size.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, a metal detector 80, a weighing conveyor 2, and a labeling machine 3 are provided downstream of the packaging machine 1. The wrapping machine 1 is a so-called stretch wrapping machine. For example, as shown in FIG. 2, an elastic film F is formed in a tubular shape, and a product M placed on a tray T is placed in the tubular film F. In the inserted state, the portion behind the product M in the film F is welded and cut, and the product M is continuously packed in a state where the film F is in close contact with the product M. In addition, as a detailed structure of the packaging machine 1, for example, a configuration disclosed in Japanese Patent Publication No. 53-48152 can be adopted.

The weighing conveyor 2 shown in FIG. 1 weighs the goods M packed by the packing machine 1 together with the tray (tare) T while transporting the goods M by a conveyor belt 20. 5) is output by the weight detector 21 of FIG. The weighing means 22 includes a low-pass filter (not shown) and the like.
0 (FIG. 1), a vibration component is removed from the measurement signal at a predetermined time after the product M has completely transferred to the product M, the measurement signal from which the vibration component has been removed is converted into a weight, and the weight including the tare is output. I do. As a detailed configuration of the weighing conveyor 2, for example, a configuration disclosed in Japanese Patent Application Laid-Open No. Sho 60-79227 can be employed.

Downstream of the weighing conveyor 2 shown in FIG. 1, there is provided a sticking conveyor 33 for conveying the packaged and weighed goods M, and a label sticking machine 3 is provided above the sticking conveyor 33. ing. The label sticking machine 3 sticks a label issued from the label printer 30 (FIG. 3) to a product M on the sticking conveyor 33.

FIG. 3 shows an example of a schematic structure of the label pasting machine 3. In FIG. 3A, in the label pasting machine 3, the label L printed by the print head 31 of the label printer 30 is held by the pasting head 32 by suction at a negative pressure.
The sticking head 32 reciprocates between an issuing position of the label L and a sticking level for sticking the label L on the film F of the commodity below by a lifting mechanism (not shown). The sticking head 32 is rotated left and right around a vertical axis by a predetermined angle by a turning mechanism (not shown) while descending, as shown in FIG. On the product film. The case of the label pasting machine 3 together with the label printer 30 is operated by an actuator (not shown) in the flow directions Dx and Dx in FIG.
By moving in the width direction Dy and the height direction Dz, the label L is attached to the set attachment position. The detailed structure of the label pasting machine 3 is described in, for example,
No. 2,726,649 can be adopted.

The sticking conveyor 33 is provided with a tray detector 34 for detecting the tip of the tray T, as shown in the plan view of FIG. The tray detector 34 is for detecting a reference time of the timing for attaching the label L,
In the label pasting machine 3, the tray detector 34 has a tray T
The label L is attached after a predetermined period of time after the detection of.

The sticking conveyor 33 is provided with positioning means 35 for positioning the tray T in the width direction. The positioning means 35 is driven, for example, by driving a pair of guide members 35a in the width direction so that the tray T
To the center of the attaching conveyor 33 for positioning.

As shown in FIG. 5, the packaging machine 1 is controlled by a first control device 4 (packaging control means), while the weighing conveyor 2 and the label pasting machine 3 are controlled by a second control device 5 (pasting control means). ). The first control device 4 includes a first local controller 41 and a first microcomputer 42, while the second control device 5 includes a second to a fourth microcomputer.
Local controllers 52 to 54 and a second microcomputer 55 are provided. The first, second, third, and fourth local controllers 41, 52, 53, 54 respectively include a first or second local controller.
Packaging machine 1, weighing conveyor 2, label pasting machine 3, and label printer 30 according to the instructions of microcomputers 42 and 55
Of the motor (not shown) is controlled.

At the upstream of the packaging machine 1, a tray size detecting means 6 for detecting the dimensions (tray size) X, Y, Z of the tray T in three axial directions is provided. As the tray size detecting means 6, any means such as a means for detecting the planar dimensions X and Y of the tray T with a CCD camera and detecting the height of the tray with an ultrasonic range finder can be used.
The tray dimensions X, Y,
Z is output to a first microcomputer 42. The first microcomputer 42 controls the packaging machine 1 via a fourth local controller 41 based on the tray dimensions X, Y, and Z. The information is output to the second microcomputer 55.

The second microcomputer 55 has a CPU 56 and a memory 57. The memory 57 includes a product information storage unit 57a. The product information storage unit 57a stores product names, unit prices, sticking positions, sticking positions, and the like for each call number of each product as shown in FIG. Is stored.

On the other hand, the CPU 56 of FIG. 5 includes a transport speed calculating means 56a, a filter constant calculating means 56b, a tare calculating means 56c, and a sticking machine position calculating means 56d. The transport speed calculating means 56a calculates the transport speed v of the weighing conveyor 2 according to, for example, the following equation (1). Ti = (Cx-X) / v (1) where Ti: time required for weighing (constant), Cx: length of weighing conveyor (FIG. 8), x: length of tray in the flow direction ( (FIG. 8) Note that the filter constant calculating means 56b calculates a cutoff frequency that changes as the transport speed v changes.

The tare calculating means 56c calculates the weight W of the tray T according to the following equation (2), for example. W = {(X · Y) + 2Z · (X + Y)} · σ (2) where σ: weight per unit area of tray

As will be described below, the sticking machine position calculating means 56d calculates the height position Z of the label sticking machine 3 in FIG.
z, the flow direction position Xx and the width direction Yy in FIG. 4 are calculated and set. Xx = (Xt−X) + Lx (3) where Xt = Vc · Tc Vc: Conveyance speed of conveyor 33 (constant) Tc: Label attaching timing time (constant time determined by each label attaching position) Lx: The distance from the end of the tray determined by the sticking posture of the label. The flow direction position Xx is calculated according to the following equation (4) when the label L is attached to the lower right and upper right positions of the tray T as indicated by broken lines. , Regardless of the size of the tray dimension X. Xx = Xt-Lx (4)

The width direction Yy is defined, for example, by the following (5)
It is calculated according to the formula. Yy = 0.5Y−Ly (5) Ly: distance from tray end determined by label sticking posture

The height position Zz in FIG. 3 is calculated, for example, according to the following equation (6). Zz = Zc + Z (6) Zc: Pasting stroke (constant)

Next, the operation of the above configuration will be described. The tray size detecting means 6 shown in FIG.
When Y and Z are detected, the first control device 4 of the packaging machine 1 outputs the dimensional information X, Y and Z of the tray to the second control device 5 and based on the dimensional information X, Y and Z of the tray. And wrap the product together with the tray. The goods packed by the packing machine pass through the metal detector 80 of FIG.
Supplied to

The packaged product M is weighed by the weighing conveyor 2 including the tare weight. At this time, the CPU 56 in FIG. 5 calculates the transport speed v of the weighing conveyor 2 and calculates the cut-off frequency according to the above-described equation (1). Thereby, the weighing accuracy is maintained. Further, the CPU 56 calculates the tare weight (tray weight) according to the formula (2) based on the tray dimensions X, Y and Z, and subtracts this from the weight including the tare to calculate the net weight of the product. The net weight is printed on a label L.

On the other hand, FIG.
Calculates the positions Xx, Yy, Zz of the labeling machine 3 based on the tray dimensions X, Y, Z from the first controller 4 and the above (4) to (6). Labeling machine 3 is the fourth
It moves to the calculated position in advance under the control of the local controller 54. The weighed product M is conveyed onto the sticking conveyor 33 in FIG. 1 and is positioned in the width direction by the positioning means 35 after the tray T is detected by the tray detector 34 in FIG. After the tray T is detected, a label L is stuck on the film F after a predetermined time elapses depending on the position where the label is stuck.

As described above, according to the present apparatus, the first controller 4 sends the dimension information Xx, Y of the tray T to the second controller 5.
y and Zz are output, so even if the size of the tray T changes, each time the tray No. You do not need to enter the size of the tray. Therefore, workability from packaging to pricing is improved.

Further, in the present invention, since the tray size information from the first control device 4 is used, there is no need to separately provide a size detecting means for the tray T between the packaging machine 1 and the weighing conveyor 2.

In the above-described embodiment, the position Xx in the flow direction of the labeling machine 3 in FIG. 4 is changed. However, in the present invention, the position Xx in the flow direction is fixed and the timing of labeling is changed. Good. For example, the time from when the tray detector 34 detects the tip of the tray T to when the tray T is attached may be changed, and the label L may be attached to a predetermined attachment position.

In the above embodiment, the tray dimensions X,
Although Y and Z themselves are output from the first control device 4 to the second control device 5 in FIG.
What is necessary is just to output "information on the dimensions of the tray" to the control device 5. For example, the tray information storage unit 57b of FIG. The tray size X, Y, Z and the tray weight are registered in advance for each tray, and the tray No. is sent from the first controller 4 to the second controller 5 in FIG. May be output to output information relating to tray dimensions.

In the above embodiment, the packaging machine 1 shown in FIG.
The metal detector 80 and the weighing conveyor 2 are provided between the metal detector 80 and the labeling machine 3.
It is not always necessary to provide the weighing conveyor 2. The label pasting machine 3 shown in FIG.
Alternatively, another structure such as spraying and sticking may be adopted.

[0033]

As described above, claims 1 to 4 are as described above.
According to the invention described in (1), the type of the tray is specified based on the detected tray size, the tare weight is read from the storage means, the net weight is calculated, and the product is determined based on the detected tray size. Is controlled, so that even if the tray to be used is changed, each time the tray No. used for the product is changed. This eliminates the need to change settings, and improves the workability with the weighing value or packaging weighing value. In addition, since the tray size detecting means is not separately provided and the tray size detecting means is used for the setting of the tare weight and the control of the label attachment, it is possible to suppress an increase in cost.

In particular, according to the third or fourth aspect of the present invention, not only the setting of the tare weight and the control of the labeling but also the operation of the packaging machine are controlled based on the detected dimensions of the tray. , Even if the tray used is changed, the tray No. used for the product is changed. This eliminates the need to change settings, etc., and improves the workability of attaching the package weighing value. In addition, since the tray size detecting means is not provided separately, and the tray size detecting means is also used for setting the tare weight, controlling the label sticking, and controlling the operation of the packaging machine, the cost increase can be suppressed.

According to the second or fourth aspect of the present invention, the sticking control means controls the label sticking position and / or the label sticking position with respect to the commodity based on the detected dimensions of the tray. The sticking position and the sticking posture can be automatically set.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a layout of a product processing system according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a packaging method.

FIG. 3 is a schematic side view showing the structure of the label pasting machine and a perspective view of the pasting head.

FIG. 4 is a plan view showing an attaching conveyor.

FIG. 5 is a schematic configuration diagram of the present system.

FIG. 6 is a table showing storage contents of a memory;

FIG. 7 is a table showing storage contents of a memory;

FIG. 8 is a plan view showing a weighing conveyor.

FIG. 9 is a side view showing the tray in a packaged state.

[Explanation of symbols]

 1: Packaging machine 3: Label attaching machine 4: First control device 5: Second control device F: Film M: Product

Claims (4)

[Claims] 1. A weighing and weighing device for weighing goods stored in a tray, the labeling device affixing a label to the goods on the weighing conveyor, wherein the type of the tray is Storage means for storing the tare weight according to the following; tray size detection means for detecting the size of the tray in which the goods are stored; specifying the type of tray based on the detected tray size; Reading means for reading a tare weight, price calculating means for calculating a net weight from the weight of the product and the read tare weight, and calculating the price of the product from the calculated net weight and the unit price of the product, A label printing means for printing and issuing information on the product including the calculated price on a label, and a sticker for controlling the sticking of the label on the product based on the detected tray dimensions. Weighing pricing apparatus characterized by comprising: a control means. 2. The weighing apparatus according to claim 1, wherein the sticking control means controls a label sticking position and / or a label sticking posture with respect to the commodity based on the detected size of the tray. 3. A packaging machine for packaging goods stored in a tray, a weighing conveyor for measuring the weight of the goods packed by the packaging machine, and a label attaching machine for attaching a label to the goods on the weighing conveyor. Storage means for storing, for each type of tray, a tare weight corresponding to the type of tray, and tray size detecting means for detecting the size of the tray in which the product is stored. Reading means for specifying the type of tray based on the detected tray size and reading the tare weight from the storage means; and calculating and calculating a net weight from the weight of the product and the read tare weight. Price calculating means for calculating the price of the product from the calculated net weight and the unit price of the product; label printing means for printing and issuing information on the product including the calculated price on a label; And a packaging control means for controlling the operation of the packaging machine on the basis of the detected dimensions of the tray. A packaging weighing / evaluating apparatus characterized by the following. 4. An apparatus according to claim 3, wherein said sticking control means controls a label sticking position and / or a label sticking posture with respect to said commodity based on the detected tray size. .