JP6709050B2 - Packaging equipment - Google Patents

Description

The present invention relates to a packaging device.

Patent Document 1 describes a packaging device including a weighing-in mechanism, a lift mechanism, a film holding mechanism, a film folding mechanism, and a label sticking mechanism. In such a packaging apparatus, when an operator (operator) carries in a product, which is the content stored in a tray, the product is weighed (measurement processing) by the weighing-in/carrying-out mechanism. Next, the product is conveyed by the weighing-in mechanism (conveying process), and the product is pressed from the lower side of the packaging film by the lift mechanism against the stretched packaging film whose peripheral portion is held by the film holding mechanism. The folding mechanism folds the peripheral edge of the packaging film under the tray to package the product (packaging process). A label on which the price and weight of the product are printed is attached to the packaged product by the label attaching mechanism (additional processing).

JP, 2003-95208, A

When packaging a product, there is a risk that the content may leak from the product or the content may break the packaging film. In such a case, the packaging device having the above-mentioned configuration is used, and the packaging process is repeated twice, for example, to multiple-wrap the packaging film on the product.

However, multiple packaging of products using the above packaging device is not realized by simply repeating the carry-in of the products twice. For example, the operator needs to switch to a mode in which only the packaging process is performed without weighing and labeling in order to prevent labeling from being applied at each loading. Also, for example, when a label is attached to a product packaged with a packaging film, the weight value of the packaging film already packaged must be added (reset) to the weight value of the tray set as the tare value. There is. For this reason, multiple packaging of products using the above packaging device imposes a heavy burden on the operator and causes a decrease in production efficiency.

Therefore, it is an object of the present invention to provide a packaging device that can reduce the operational burden on the operator when multiple packaging of products and enhance the production efficiency.

The packaging device of the present invention, when the product in which the contents are stored in the tray is placed in the carry-in section, the carrying-in process of carrying in the product, the packaging process of packaging the product with a packaging film, and the packaged product. A packaging device capable of performing additional processing for adding information related to the product to, and performing a series of processing including a carry-in processing, a packaging processing, and an additional processing on one product. The normal packaging mode is a mode in which one product is repeatedly carried into the carry-in section N times to perform multiple wrapping with one wrapping film, and the wrapping process is performed for one product. A control unit is provided which is switchable between the multiple packaging mode, which is executed for each carry-in process, and the addition process is executed only once out of N carry-in processes for one product.

In the packaging apparatus of this configuration, if the product is switched to the multiple packaging mode, even if one product is repeatedly carried into the carry-in section, no additional processing is performed on all the carried-in goods. That is, in the multiple wrapping mode, the wrapping process is executed every time one product is loaded, but the adding process is executed only once in N times. As a result, the operator can carry out the multiple wrapping by simply carrying in one product after switching to the multiple wrapping mode. In other words, it is not necessary to switch to a mode in which only the packaging process is performed or the like each time one product is loaded. This makes it possible to increase the production efficiency without increasing the operation burden on the operator even in the case of N-weight packaging for one product.

The carrying-in process of the packaging apparatus of the present invention includes a weighing process for weighing the contents, and the addition process may add at least the information obtained by the weighing process.

In the packaging device of this configuration, if the product is switched to the multiple packaging mode, even if one product is repeatedly carried into the carry-in section, additional processing is performed in which the information obtained by the weighing process is added to all the carried-in goods. There is no. As a result, the operator can perform multiple wrapping by simply carrying in one product after switching to the multiple wrapping mode, and can attach only one of the above information to one product. It will be possible.

In the multiple packaging mode of the packaging apparatus of the present invention, in the multiple packaging mode, the weighing process and the additional process are executed during the N-th loading process of one product, and in the weighing process, at least the weight value of the tray is N−. The weight of the contents may be weighed using the tare value as a value obtained by adding the weight value of the packaging film packaged to the product by the packaging process by the first loading.

With the packaging device having this configuration, it is possible to easily form a product in which the above information is added to the outermost packaging film, for example, a product in which a label or the like with information printed is attached to the outermost packaging film. Become.

In the multiple wrapping mode of the wrapping apparatus of the present invention, the weighing process and the addition process may be executed during the first carry-in process of one product.

With the packaging device having this configuration, it is possible to easily form a product in which the above information is added to the innermost packaging film, for example, a product in which a label or the like with information printed is attached to the innermost packaging film. Become.

In the multiple packaging mode of the packaging apparatus of the present invention, the weighing process is executed every time one product is loaded, and the weight value weighed during the n-th loading process, which is the Nth or less of the one product, and the n of the one product. In the case where the difference from the weight value measured in the previous carrying-in process is equal to or more than the predetermined threshold value, the fact may be notified.

In the packaging device having this configuration, it is possible to detect that the product to be carried in (whether it is a packaged product or an unpackaged product) is not carried in in the multiple packaging mode. As a result, it is possible to prevent the operator from making a mistake in carrying-in, so that it is possible to improve production efficiency.

The packaging apparatus of the present invention may further include a detection unit that detects the presence or absence of packaging for the product carried into the carry-in unit.

With the packaging device of this configuration, by utilizing the detection result of the presence or absence of packaging, for example, the product is automatically switched to the multiple packaging mode without switching by an operator, or the product to be carried in the multiple packaging mode (for the packaged product It is possible to detect that a certain product or an unpackaged product is not loaded.

In the packaging device of the present invention, the control unit may switch to the multiple packaging mode when the packaging film is detected by the detection unit.

With the packaging device having this configuration, the burden on the operator can be further reduced.

ADVANTAGE OF THE INVENTION According to this invention, even when packaging a packaging film several times with respect to one product, it is possible to improve the production efficiency without increasing the operational burden on the operator.

It is an appearance perspective view showing a packaging device concerning one embodiment. It is a schematic front view which shows the inside of the packaging device of FIG. FIG. 3 is a schematic arrow view taken along the line III-III in FIG. 2. It is a block diagram which shows the function structure of the packaging device of FIG. It is a flow chart which shows an example of operation of a packaging device. It is a flow chart which shows an example of operation of a packaging device. It is a figure which shows an example of an abnormal point display screen.

An embodiment will be described below with reference to the drawings. In the description of the drawings, the same elements will be denoted by the same reference symbols, without redundant description. The dimensional ratios in the drawings do not always match those in the description.

(1) Overall Configuration As shown in FIGS. 1 to 3, the packaging device 1 is a device for packaging a product G in which a tray W contains contents W such as food items with a film (wrapping film). The packaging device 1 includes a weighing-in mechanism (carry-in unit) 2, a packaging mechanism 10, a label printer LP, a label issuing machine LI, and a control device 9. The packaging mechanism 10 includes a packaging station 3, a roll holding mechanism 4, a film feeding mechanism 5, a film transport mechanism 6, a cutter mechanism 7, and a sealing mechanism 8. Each mechanism included in the packaging device 1 is housed in the main body 1a and the casing 1b of the packaging device 1. The casing 1b is attached to the side part of the main body 1a.

In the following description, “left and right” means left and right when facing the front of the main body 1a of the packaging device 1. The front side in the front-back direction of the packaging device 1 is referred to as the "front side", and the opposite side is referred to as the "back side". “Upstream” and “downstream” mean upstream and downstream in the transport direction of the film F, respectively.

As shown in FIG. 3, the weighing-in/carrying-in mechanism 2 includes a weighing device 2a, a carrying-in belt 2b, a weighing pan 12, a camera 14, a first illuminating section 15, and a second illuminating section 16. The weighing device 2a weighs the product G placed on the weighing pan 12 and outputs information indicating a weighing value (hereinafter, referred to as “weight value”) corresponding to the mass of the product G to the control device 9. The carry-in belt 2b is stretched between a pair of rollers. The carry-in belt 2b is provided with a carrying bar 13 for carrying the product G. The transport bar 13 moves to the back side according to the driving of the carry-in belt 2b, and pushes out the product G to the back side. As a result, the product G is sent onto the support member 33 of the lifter mechanism 30 described later in the packaging station 3. The transport bar 13 extends along the width direction of the weighing dish 12, and is located on the front side of the weighing dish 12 in the initial position.

The weighing dish 12 is a rectangular shallow dish-shaped tray on which the product G is placed. The weighing dish 12 has a placing surface 12a on which the product G is placed. On the outer side (here, the front side) of the placing surface 12a in the weighing dish 12, a claw portion 12b that is raised with respect to the placing surface 12a is formed. The claw portion 12b is a reference portion when the tray T is placed on the weighing pan 12.

The camera 14 images the product G placed on the weighing pan 12. The camera 14 is arranged above the weighing pan 12. In the illustrated example, the camera 14 is provided downward on the discharge table 82 above the weighing pan 12, and captures an image of a predetermined area including the product G on the weighing pan 12 as a captured image. The camera 14 outputs image information regarding the captured image to the control device 9. A CCD camera or a CMOS camera is used as the camera 14. The first illumination unit 15 is an illumination device such as an LED (Light Emitting Diode) that illuminates the product G. The second illuminating unit 16 is an illuminating device such as an LED that illuminates an abnormal place when an abnormality occurs. The second illuminator 16 is provided at a position where it can illuminate, for example, a detection area of a sensor that detects forgetting to take the product G or the like.

The packaging station 3 is a space formed in the main body 1a. The packaging station 3 is a space for performing a series of packaging processes on the products G weighed by the weighing-in/carrying-out mechanism 2. A lifter mechanism 30 and a folding mechanism 37 are arranged in the packaging station 3.

The lifter mechanism 30 is provided below the packaging station 3. The lifter mechanism 30 receives the bottom surface of the tray T by a plurality of support members 33, and moves the support base 31 fixed to the support members 33 upward by the electric ball screw mechanism 34. As a result, the lifter mechanism 30 holds the bottom surface of the tray T and moves the product G upward. The lifter mechanism 30 pushes up the product G with respect to the film (stretch film) F held by the film transport mechanism 6 under tension.

The folding mechanism 37 folds the peripheral portion of the film F onto the bottom surface side (that is, the bottom surface side of the tray T) of the product G pushed up by the lifter mechanism 30, and covers the product G with the film F. The folding mechanism 37 folds both ends of the film F in the film transport direction to the bottom surface side of the tray T by the left and right folding plates 76 and 77. The folding mechanism 37 folds the side portion of the film F on the back side in the width direction onto the bottom surface side of the tray T by the rear folding plate 78. When the tray T is ejected to the sealing mechanism 8 side by the ejection pusher 79a, the folding mechanism 37 folds the front side portion of the film F in the width direction onto the bottom surface side of the tray T with the front folding bar 79.

The roll holding mechanism 4 is installed in the casing 1b, as shown in FIGS. The roll holding mechanism 4 has a structure for holding two film rolls R of the same type or different types. A film F having a predetermined width is wound around each film roll R in multiple layers. As shown in FIG. 2, the roll holding mechanism 4 includes an upper roll holding unit 41 that holds the film roll R, a lower roll holding unit 42 that holds the film roll R, an upper roll holding unit 41, and a lower roll. And a roll driving unit 43 that selectively rotates the holding unit 42 to feed the film F from one of the film rolls R.

The film delivery mechanism 5 delivers the film F drawn from the film roll R to the pair of feeder units 61 and 62 of the film transport mechanism 6. The film feeding mechanism 5 is installed in the casing 1b.

As shown in FIGS. 2 and 3, the film transport mechanism 6 receives the film F from the film delivery mechanism 5 and transports the film F to the packaging station 3. Further, the film transport mechanism 6 holds the film F received from the film feeding mechanism 5 in a tensioned state in the central portion of the packaging station 3. The film transport mechanism 6 includes a first feeder unit 61, a second feeder unit 62, a first feeder moving unit 63, and a second feeder moving unit 64.

The first and second feeder units 61 and 62 sandwich the widthwise both sides of the film F with a belt. Slide shafts 66 and 67 extending in the width direction of the film F are provided on the longitudinal side portions of the first and second feeder units 61 and 62. The first and second feeder units 61 and 62 are supported by slide shafts 66 and 67. The first and second feeder units 61 and 62 are driven by the first feeder moving unit 63 and the second feeder moving unit 64, and move in the film width direction along the slide shafts 66 and 67 to convey the film F.

As shown in FIG. 2, the cutter mechanism 7 cuts the film F stretched between the film delivery mechanism 5 and the film transport mechanism 6 after the film delivery mechanism 5 transfers the film to the film transport mechanism 6. .. The cutter mechanism 7 cuts the film F stretched between the film delivery mechanism 5 and the film transport mechanism 6 after the film transport mechanism 6 transports the film by a predetermined amount. The cutter mechanism 7 is arranged between the film feeding mechanism 5 and the film transport mechanism 6, and has a cutting blade 7a longer than the film width. The cutting blade 7a is moved vertically by an actuator.

The sealing mechanism 8 heat seals the film F folded by the folding mechanism 37. The sealing mechanism 8 has a carrying roller and a heating roller, and heat-seals the product G extruded by the discharge pusher 79a while carrying it by the carrying roller and the heating roller. The sealing mechanism 8 discharges the packaged product G toward the discharge table 82.

As shown in FIGS. 1 and 4, the label printer LP prints information about the contents W on a label. The information about the article includes a product name, a weight value of the content W, a price, and the like. The label printer LP acquires the product name and the like from the storage unit 91 which will be described in detail later, and acquires the weight value and the price of the content W from the control unit 93 which will be described in detail below. The label issuing machine LI attaches the label printed by the label printer LP to the discharged packaged product G.

The control device 9 is a computer arranged on the upper part of the main body 1a, and controls the operation of each of the above mechanisms. The control device 9 includes a storage unit 91 and a control unit 93. A display panel 17 capable of displaying various information is connected to the control device 9. The display panel 17 is, for example, a touch panel display, and also displays operation buttons that allow the operator to perform various operations and inputs. That is, the display panel 17 is also an operation unit of the packaging device 1.

The storage unit 91 stores at least one of preset data, data input from the display panel 17, and data transferred from an external device. The data includes data relating to a plurality of types of film F (thickness, material, film width, tare weight value, etc.), data relating to a plurality of types of product G (unit price per unit weight, product name, etc.), and a plurality of types of trays. It includes data on T (size, shape, material, tare weight value, etc.).

The control unit 93 is an input/output interface I/O for inputting/outputting signals to/from the outside, a ROM (Read Only Memory) in which programs and information for processing are stored, and a RAM for temporarily storing data. (Random Access Memory), a storage medium such as an HDD (Hard Disk Drive), a CPU (Central Processing Unit), a communication circuit, and the like. The control unit 93 stores various input data in the RAM based on the signal output from the CPU, loads the program stored in the ROM into the RAM, and executes various programs by executing the program loaded in the RAM. To do.

The control unit 93 controls the weighing-in mechanism 2 to execute the weighing process for weighing the contents W placed on the weighing pan 12. Specifically, the control unit 93 calculates the weight value of the content W by subtracting the tare weight value of the tray T stored in the storage unit 91 from the weight value of the product G transmitted from the weighing machine 2a. To do. In addition, the control unit 93 controls the weighing-in mechanism 2 to execute a transportation process for transporting the product G placed on the weighing pan 12.

The control unit 93 may also determine the size of the tray T based on the captured image acquired by the camera 14. To determine the size of the tray T, for example, a rectangular area that is a rectangular area (so-called minimum rectangle) having the smallest area including the product G is specified (rectangular fitting), and the lengths of the sides of the specified rectangular area are calculated. The size (long side size and short side size) may be determined. The length (mm) of the side of the rectangular area can be specified based on, for example, the number of pixels.

The control unit 93 controls the packaging mechanism 10 to execute the packaging process of packaging the product G with the film F. Specifically, the control unit 93, based on the set value stored in the storage unit 91 or the size of the tray T acquired from the captured image acquired by the camera 14, has a film size matched to the size of the tray T. F, or the product G is positioned on the support member 33 of the lifter mechanism 30 at a position corresponding to the size of the tray T, or the peripheral portion of the film F is adjusted to the bottom side of the tray T according to the size of the tray T. Fold it in and wrap it.

The control unit 93 controls the label printer LP and the label issuing machine LI to perform a sticking process for sticking a label on which the weight value of the content W or the price of the product G is printed to the product G packaged with the film F. Let it run. Specifically, the control unit 93 causes the label printer LP to output the weight value of the content W or the price calculated based on the weight value of the content W acquired by the above-described weighing process, and the label issuing machine The label is attached to the product G by LI.

The packaging device 1 of this embodiment has a normal packaging mode and a multiple packaging mode. The control unit 93 can switch between the normal wrapping mode and the multiple wrapping mode. Specifically, the control unit 93 enables the above switching by a command input (selected) via the display panel 17.

The normal wrapping mode is a mode in which a series of processes including a weighing process, a carrying process, a wrapping process, and a pasting (adding) process are executed for one product G. In other words, the normal wrapping mode is a mode in which the weighing process, the carrying process, the wrapping process, and the pasting process are performed every time the product G is loaded. On the other hand, the multiple wrapping mode is a mode for multiple wrapping one product G by N films F by repeatedly carrying one product G into the weighing and loading mechanism 2 N times. In other words, the multiple wrapping mode is a mode in which the wrapping process is executed every predetermined number of times (N times) of the carrying-in process, and the sticking process is performed only once out of the N wrapping processes. It should be noted that the weighing process does not have to be performed all at a predetermined number of times (N times) of loading, and may be performed at least once.

In the multiple wrapping mode of the present embodiment, the control unit 93 executes the weighing process, the carrying-in process, and the wrapping process from the first loading of the one product G to the (N-1)th loading, and the one product G. At the N-th carry-in, the weighing process, the carrying process, the packaging process, and the pasting process are executed. Then, in the N-th (for example, second) weighing process, the value obtained by adding the weight value of the tray T to the weight value of the film F packaged at the time of the N−1-th (for example, first) loading is re-read as the tare value. Set.

When the control unit 93 detects an abnormality during the execution of any of the weighing process, the carrying process, the packaging process, and the sticking process, as illustrated in FIG. 7, the abnormality content display P1 and the packaging device are displayed. Abnormality notification in which a display P2 in which the diagram showing the configuration of No. 1 and the abnormal portion (hatched portion in FIG. 7) is superimposed, a display P3 of a message to the operator, a return button P4, and the like are displayed. The screen P is displayed on the display panel 17.

Further, instead of or in addition to the display of the abnormality notification screen P in the control unit 93, the second illumination unit 16 that illuminates the abnormal portion may be controlled to be turned on or blinked. This makes it easy for the operator to specify the abnormal portion. Further, the control unit 93 may turn off the second illumination unit 16 when the abnormality is resolved. This makes it easier for the operator to identify that the abnormality has been resolved. The second lighting unit 16 may be a lighting device that can emit light having a sterilizing action. In addition, the second lighting unit 16 may be configured to be able to be turned on through an operation of the display panel 17 or the like without being interlocked with the detection of the abnormality. This improves the visibility of the operator during work.

(2) Operation of the packaging device Next, the operation of the packaging device 1 will be described in detail with reference to FIGS. 5 and 6. The control unit 93 receives the setting of the product G to be wrapped from now on via the display panel 17 (step S1). The setting of the product G includes the selection of the contents W, the selection of the normal packaging mode or the multiple packaging mode, or the number N (the number of repetitions N) of the packaging when the multiple packaging is performed. When the operator places the product G on the weighing pan 12 of the weighing-in/carrying-in mechanism 2, the weighing device 2a detects the carry-in of the product G (step S2). Here, the control unit 93 confirms whether the mode set in step S1 is the normal packaging mode or the multiple packaging mode (step S3).

When it is confirmed by the control unit 93 that the normal packaging mode is set (S3: YES), the product G is weighed by the weighing machine 2a (weighing process: step S4) and the product G is imaged by the camera 14. It The control unit 93 identifies the size of the tray T from the captured image captured by the camera 14. The size of the tray T can be specified by a known method such as acquiring the outer shape.

Next, the product G is pushed out onto the support member 33 of the lifter mechanism 30 by the transport bar 13 (transport process: step S5). The film F is transferred to the film transport mechanism 6 by the film feeding mechanism 5 and cut into a rectangular film F by the cutter mechanism 7 in accordance with the size of the tray T. The film F is carried to the upper side of the lifter mechanism 30 by both feeder units 61 and 62, and both widthwise side portions thereof are held in tension.

Next, the product G is pressed against the film F held in tension by the lifter mechanism 30 and stretched by the product G. The periphery of the film F is folded under the tray T by the folding mechanism 37, and the product G is wrapped (wrapping process: step S6). Subsequently, the product G is pushed out to the seal mechanism 8 side by the discharge pusher 79a. The film F is heat-sealed by the sealing mechanism 8 and then discharged onto the discharge table 82.

The label printer LP prints a label to be attached to the product G, that is, information such as the product name of the product G, the weight value of the content W, and the price of the product. The weight value of the content W is calculated by subtracting the tare value of the tray T stored in the storage unit 91 from the weight value of the product G acquired by the weighing machine 2a. The label printed by the label printer LP is attached to the film F packaging the product G by the label issuing machine LI (attachment process: step S7).

Next, the case where it is confirmed in step S3 that the multi-packaging mode is set (S3: NO) will be described. In the following description, in step S1, when “2” is input as the number of packages N (the number of repetitions N) in the case of performing multiple wrapping, that is, the double wrapping packaged by the two films F. Will be described as an example.

The control unit 93 determines whether or not the number of times the product G has been carried in is the first time (step S11). When it is confirmed by the control unit 93 that the number of times the product G is carried in is the first time (S11: YES), the weighing process similar to step S4, the transportation process similar to step S5, and the same as step S6. The packaging process is sequentially executed (steps S12 to S14). As a result, the product G wrapped with the film F is discharged to the discharge table 82. The control unit 93 stores the weight value of the product G weighed in step S12 as the first weight value.

When multiple packaging of the product G is performed in the packaging device 1 of the present embodiment, the operator continuously and again loads the product G discharged onto the discharge table 82 (the product G that has been packaged for the first time) 2 again. Carry in. That is, the operator carries in the product G for the second time. When the operator places the product G on the weighing pan 12 of the weighing-in/carrying-in mechanism 2, the weighing device 2a detects the carry-in of the product G (step S15). When the carry-in is detected, the control unit 93 determines whether the number of times the product G is carried in is the first time (step S11). Here, it is determined that the number of times the product G has been carried in is the second (S11: NO).

Next, the control unit 93 changes the setting of the tare value for calculating the weight value of the contents W (step S21). Specifically, in the packaging device 1, normally (including the normal packaging mode), the weight value of the tray T containing the contents W is set as the tare value, but the second time the product G is loaded in the multiple packaging mode. At times, a value obtained by adding the weight value of the film T packaged at the time of first loading to the weight value of the tray T is reset (changed) as the tare value.

Subsequently, the same weighing process as in steps S4 and S12 is executed (step S22). Next, the control unit 93 carries in the product for the first time from the weight value of the product G weighed in step S12 (the weight value of the content W for the (n-1)th time) and the weight value of the product G weighed in step S22. It is determined whether or not the weight value obtained by subtracting the weight value of the packaged film from time to time (the weight value of the n-th content W) is equal to each other (step S23). In other words, the weight value of the product G weighed in step S22 is the sum of the weight value of the product G weighed in step S12 and the weight value of the film F packaged at the time of the first loading. It is determined whether or not there is.

When the weight value of the content W for the (n-1)th time and the weight value of the content W for the nth time are different from each other (S23: NO), the product G (the film F that should originally be carried in in the nth time of carrying-in (step S14)) There is a high possibility that the product G is not packaged by (for example, the product G not packaged by the film F). Therefore, the control unit 93 causes the display panel 17 to display (notify) a screen (warning display) prompting confirmation of whether or not the wrong product G has been carried in, and allows the process to continue or A selection is made as to whether or not to carry in G again (step S29).

Here, when the continuation of the process is selected (S29: YES), the carrying process (step S23) similar to step S13 and the packaging process (step S24) similar to step S14 are executed. Further, when the redelivery of the product G is selected (S29: NO), in response to the operator placing the product G on the weighing pan 12 of the weighing-in/carrying-in mechanism 2, step S15, step S11, step The processing of S21, step S22 and step S23 is executed.

When the weight value of the content W for the (n-1)th time and the weight value of the content W for the nth time are the same (S23: YES), the packaging processing similar to that at step S13 (step S25) and the same as at step S14. And the packaging process of. In addition, when the difference between the weight value of the content W for the (n-1)th time and the weight value of the content W for the nth time is within a predetermined range, the same processing as steps S13 and S14 may be executed.

Next, the control unit 93 confirms how many times the previous packaging process (the packaging process in step S25) was the packaging process (step S26). In other words, it is confirmed how many films F the product G is wrapped in. Here, if the value confirmed in step S26 matches the number N (the number of repetitions N) of the packages input in step S1, the sticking process similar to step S7 is executed (step S27). Next, the control unit 93 returns the packaging mode to the normal packaging mode (step S28) and ends the series of processes.

If the value confirmed in step S26 has not reached the number N of packaging (repetition number N) input in step S1, the control unit 93 causes the display panel 17 to discharge the discharge tray 82. A screen prompting the user to place the product G again on the weighing pan 12 of the weighing-in mechanism 2 is displayed. When the product G is placed on the weighing pan 12 of the weighing-in mechanism 2 by the operator, the process from step S21 is repeated as the n-th (third) loading of the product G. In this way, the repetitive processing is executed until the number N of packages (repetition number N) input in step S1 is reached.

(4) Features, Functions, and Effects In the packaging device 1 of the above-described embodiment, by switching to the multi-packaging mode, even if one product G is repeatedly carried into the weighing-in/carrying-out mechanism 2, weighing processing and transportation are performed for all the products. The processing, the packaging processing, and the additional processing are not all performed. That is, in the multiple wrapping mode, although the wrapping process is executed for each carrying-in process of one product G, the pasting process is executed only once based on the weighing process once in N times. This allows the operator to carry out multiple packaging for one product simply by repeatedly carrying in one product after switching to the multiple packaging mode. As a result, even when the N-fold film F is packaged for one product G, the production efficiency can be increased without increasing the operation burden on the operator.

In the multiple packaging mode of the packaging device 1 of the above embodiment, the packaging device 1 is loaded in the multiple packaging mode depending on whether or not the weight value of the content W of the (n-1)th time and the weight value of the content W of the nth time are the same. It is determined whether or not the product is a desired product (packaged product). As a result, it is possible to prevent the operator from mistakenly carrying in the product G in the multi-packaging mode, so that the production efficiency can be improved. Specifically, it is possible to prevent the product G or the like that is not packaged in the film F from being carried in at the second carrying-in in the multi-packaging mode.

In the multiple packaging mode of the packaging device 1 of the above-described embodiment, the weight value of the tray T is packaged by the packaging processing by the loading up to the (N-1)-th time by the weighing processing at the time of the last (N-th) loading of one product G. Since the weight of the content W is measured using the value obtained by adding the weight value of the film F added as the tare value, it becomes possible to easily form the product G having the label attached to the outermost film F. ..

(5) Modifications One embodiment has been described above, but the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the invention.

In the multi-packaging mode of the above-described embodiment, the weighing process, the carrying process, and the packaging process are executed from the first time to the N-1th time of loading of one product G, and the Nth time of loading of one product G ( An example (hereinafter referred to as "first mode") in which all of the weighing process, the carrying process, the packing process, and the sticking process are executed at the time of the final carrying-in in the N-fold packaging has been described. Not limited to. For example, the weighing process, the carrying process, the packaging process, and the sticking process are all performed when the first product G is loaded, and the weighing process, the transportation process, and the packaging process are performed when the second product is loaded to the Nth product. It may be executed (hereinafter referred to as "second mode"). When the multiple packaging in the "second mode" is executed, the content W to be printed on the label is weighed with the initial set value of the tare value from the weight value of the product G acquired by the first weighing process. It is calculated by subtracting the weight value of a certain tray T. Accordingly, it is possible to provide the product G in which the label is covered with the outer film F.

The first mode and the second mode described in the modification may be accepted via the display panel 17. That is, the first mode or the second mode may be selected as one of the settings of the product G.

In the multiple packaging mode of the above-described embodiment or the modification, in step S23, the original value is carried in depending on whether or not the weight value of the content W of the (n-1)th time and the weight value of the content W of the nth time are the same. The example in which it is determined whether the product G should be a product has been described, but the present invention is not limited to this. For example, when the control unit 93 can determine the presence/absence of the film F based on the captured image acquired by the camera 14, it is determined whether or not the product G should be originally carried in depending on the presence/absence of the film F. You may judge. That is, in the scene of step S23, when the film F is detected, it is determined that it is the product G that should be originally carried in, and when the film F is not detected, it is determined that it is not the product G that should be originally carried in. ..

In this case, the control unit 93 determines the presence or absence of the film F of the product G based on the pixels in the captured image acquired by the camera 14. When the transparent film F is packaged in the product G, light is strongly reflected by the film F, so that the pixel of the pixel corresponding to the portion corresponding to the film F (hereinafter, referred to as “target area”). Brightness tends to be bright. Therefore, the control unit 93 determines the presence or absence of the transparent film F in the product G based on the brightness of the pixels in the target area.

Further, when the transparent film F is packaged in the product G, so-called color skipping (a phenomenon in which the luminance shows a value near the peak, which is also referred to as white spot) tends to occur in the pixels in the target area. Therefore, the control unit 93 detects, for example, the maximum value (luminance peak) of the luminance of the pixel in the target region, and when the luminance peak is equal to or more than a predetermined threshold (hereinafter, referred to as “luminance peak threshold”), It may be determined that the transparent film F is packaged.

Further, when the transparent film F is packaged in the product G, the luminance of the pixels included in a certain range in the target area tends to show a high value. Therefore, the control unit 93 detects the brightness of each pixel in the target area, and when the number of pixels having a brightness equal to or higher than a predetermined brightness (threshold) set in advance is equal to or larger than the predetermined number of pixels (threshold value) set in advance, It may be determined that the transparent film F is packaged.

Further, when the transparent film F is packaged in the product G, the luminance of the pixels in the target area tends to have large variations among the pixels. This is because the strongly reflected light is partially detected by the camera 14 in a part of the transparent film F. Therefore, the control unit 93 detects the brightness of each pixel in the target area, and when the brightness distribution of each pixel is equal to or more than a predetermined threshold value (hereinafter, referred to as “brightness dispersion threshold value”), the transparent film. It may be determined that F is present.

The determination of the presence/absence of the transparent film F is not limited to the determination by the above-described determination method. For example, the control unit 93 may use an average value of brightness instead of the brightness peak in the above-described determination using the brightness peak. Moreover, the control unit 93 may combine the above-described determination methods. For example, the control unit 93 determines that the transparent film F is present when the luminance distribution of each pixel in the target area is equal to or higher than the luminance dispersion threshold and the luminance peak in the target area is equal to or higher than the luminance peak threshold. Good. The control unit 93 may determine the presence/absence of the film F of the product G by using, for example, a method previously selected by an operator or the like among the above-described various determination methods and the like.

Further, the function of detecting the film F by the control unit 93 described above not only checks whether or not the product G should be originally carried in in the multiple wrapping mode of the above-described embodiment, but also automatically switches from the normal wrapping mode. It is also possible to switch to the packaging mode. Specifically, when the control unit 93 determines that the product G is packaged with the film F by the above-described method, the control unit 93 switches to the multiple packaging mode, and the weight value of the tray T is packaged with the product G. The value obtained by adding the weight value of the film F is reset (changed) as the tare value. Thereby, the weight of the contents W of the product G wrapped by the film F can be accurately calculated.

In the above-described embodiment or modification, an example is described in which a weighing process for weighing the content W is executed, and a label on which information (weight value of the product G) obtained by the weighing process is printed is attached. However, the present invention is not limited to this. For example, in the case of multiple packaging of fixed-rate products whose price is not determined by the weight value, a label with the product information entered as the set value and the price information (information related to the product) attached is attached. It may be attached by processing. In such a case, the weighing process may not be executed.

In the above-described embodiment or modification, an example in which the weight value of the tray T is set as the initial value of the tare value has been described, but at least the weight value of the tray T may be set. For example, in the case of a product such as sashimi containing a soy sauce pack or a tsuma, the weight value of the soy sauce pack or the tsuma may be set in addition to the weight value of the tray T.

In the above-described embodiment or modification, when the weight value of the content W of the n-1th time and the weight value of the content W of the nth time are different from each other (S23: NO), the control unit 93 causes the display panel 17 to display Although an example of displaying a screen (warning display) prompting confirmation of whether or not the wrong product G has been carried in has been described, a warning sound is emitted, the first lighting unit 15 or the like is blinked, or the like. The configuration capable of notifying that effect may be replaced with or added to the configuration of the above-described embodiment or modification.

In the above-described embodiment, as an example of the addition process, the sticking process of sticking a label has been described as an example. However, for example, the information obtained from the weighing process is directly printed on the film F, or attached to the tray T. Information may be added to the existing IC chip.

DESCRIPTION OF SYMBOLS 1... Packing device, 1a... Main body, 1b... Casing, 2... Weigh-in carrying-in mechanism (carrying-in part), 2a... Weighing machine, 9... Control device, 10... Packaging mechanism, 12... Weighing pan, 14... Camera, 15... One illumination unit, 16... Second illumination unit, 17... Display panel, 91... Storage unit, 93... Control unit, F... Film, G... Product, LI... Label issuing machine, LP... Label printer, P... Abnormality notification screen , T...Tray, W...Contents.

Claims (7)

When the product containing the contents in the tray is placed on the carry-in section, a carrying-in process for carrying in the product, a packaging process for packaging the carried-in product with a packaging film, and the packaged product A packaging device including a control unit that executes additional processing for adding information related to the product to,
When the set mode is the normal packaging mode, the control unit executes a series of processes including the carry-in process, the packaging process, and the addition process for one product, and the set product is set. When the mode is the multi-packaging mode, the packing apparatus, wherein the carrying-in process and the packing process following the carrying-in process are repeated a plurality of times for the one product, and the adding process is executed only once . The packaging apparatus according to claim 1, wherein the carry-in process includes a weighing process for weighing the contents, and the adding process adds at least the information obtained by the weighing process. The weighing process included at the time of the carrying-in process that is finally executed among the carrying-in processes repeatedly executed in the multiple packaging mode is at least the weight of the tray from the measured value of the product packaged by the packaging film. The weight of the content is calculated by subtracting a value and a weight value of the packaging film packaged in the product by the packaging process by the last-to-last delivery. Packaging equipment. The packaging device according to claim 2 , wherein, in the multiple packaging mode, the weighing process and the additional process are executed during a first-time loading process of the one product. In the multiple packaging mode, the weighing process is performed every time the one product is loaded,
If the difference between the weight value of the first product weighed in during the nth loading process and the weight value of the first product weighed in the n-1th previous loading process is greater than or equal to a predetermined threshold value, this is notified. The packaging device according to any one of claims 2 to 4. The packaging device according to any one of claims 1 to 5, further comprising a detection unit that detects the presence or absence of the packaging for the product carried into the carrying-in unit. The packaging device according to claim 6, wherein the control unit switches to the multiple packaging mode when the packaging film is detected by the detection unit.

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