JP6875727B2 - Packaging equipment - Google Patents

Description

The present invention relates to an improved technique for a packaging device for packaging trays and containers containing fresh foods and the like with a stretch film.

Fresh foods and bento boxes sold at supermarkets and convenience stores are wrapped in stretchable stretch film, and a pricing label is affixed on top of it.

As an apparatus for weighing, packaging, and pricing such products, for example, the apparatus described in the following patent documents is known. This device has a packaging mode in which the product is wrapped in a stretch film, and a weighing packaging value in which the product is weighed, the product is packaged in the stretch film, and then a pricing label reflecting the weighing result is attached to the product. It has a pricing mode and a weighing mode in which a product that has already been packaged (hereinafter referred to as a packaged product) is weighed and a pricing label that reflects the result is attached to the packaged product. ..

Special Fair 8-11578 Japanese Patent No. 3888499

In this weighing mode, the packaged product is weighed in the weighing unit and then sent to the packaging unit, where it is not packaged and is discharged to the labeling position as it is. At that time, the posture of the packaged product may be disturbed and a sticking error may occur.

FIG. 1 illustrates the principle of occurrence of the sticking error, and FIG. 1A shows a state in which the packaged product M is lifted to the height of the discharge surface H by the lift mechanism L in the packaging unit. (B) shows a state in which the packaged product M has begun to be discharged by the discharge pusher P. Then, in FIG. 1A, the left and right folding plates FP1 and the rear folding plate FP2 are retracted from the packaged product M, and in that state, the discharge pusher P moves in the direction of the arrow to move the packaged product M. Discharge to the label sticking position RP. Then, the tiltable lift head LH that supports the packaged product M is pushed by the packaged product M that moves in the direction of the arrow and falls down as shown in FIG. 1 (b).

In this state, the discharge pusher P pushes the packaged product M, so that the front end portion of the packaged product M hits the front folding roller R and floats up as shown in FIG. 1 (c), and is discharged to the label sticking position RP as it is. Will be done. At that time, since the pricing label L is lowered above the label affixing position RP, if the tip of the packaged product M remains raised, the encounter timing with the falling pricing label L is reached. As a result, the position where the pricing label L is attached to the packaged product M shifts. In particular, if the encounter timing is early, the end of the attached pricing label L will protrude from the edge of the packaged product M, and that part may bend or adhere to the periphery, causing trouble. ..

The present invention solves such a problem, and provides a new packaging device capable of attaching a pricing label to a predetermined position of a packaged product even when the packaging device is set to the weighing pricing mode. Is the subject.

In the packaging device according to the present invention, the peripheral portion of the film protruding from the object to be packaged is folded into the bottom side of the object to be packaged with a folding plate, and the packaged object is packaged and discharged to the label affixing position with a discharge pusher to attach the label. A packaging device that can be done
The film is wrapped with the film while being folded into the bottom surface side of the object to be packaged with the folding plate.
A packaging pricing mode in which the object to be packaged is pushed out to the label affixing position with a discharge pusher, and a pricing mode in which the already packaged packaged product is discharged to the label affixing position as it is without the packaging and the label is affixed. And with
When the pricing mode is set, the packaged product is discharged to the label sticking position by the discharge pusher while supporting the bottom surface of the packaged product with the folding plate.

This packaging device includes a left and right folding plate that folds the peripheral portion of the film protruding from the packaged object from the left and right to the bottom surface side of the packaged object, and a rear folding plate and a front folding roller that fold the film from the front and back. Then, when the packaging mode is set, the packaged object placed on the lift head is pushed up toward the tension-retaining film, and then the left and right folding plates and the back folding plate invade the bottom surface side of the packaged object. Then, the peripheral edge of the film protruding from the packaged object is folded toward the bottom surface. Subsequently, when the object to be packaged pushed by the discharge pusher gets over the front folding roller, the peripheral edge of the film on the front side of the object to be packaged is folded toward the bottom surface. As a result, the object to be packaged is wrapped in a film and discharged to the label affixing position in that state.

On the other hand, when the pricing mode is set, the folding plate invades the bottom side of the packaged product prior to the discharge pusher. As a result, the folding plate supports the bottom surface of the packaged product in place of the lift head that supported the packaged product. Then, while maintaining that state, the discharge pusher pushes the packaged product and discharges it to the label sticking position. By this operation, the tip of the packaged product is discharged to the label sticking position without rising. Therefore, even if the pricing label is affixed at the label affixing position, the misalignment does not occur.

Information that reflects the weighing result is printed on the pricing label in this case, but in the case of a flat-rate product, the weighing result is not essential, so here we do not call it the weighing pricing mode. It is just a pricing mode.

Further, the folding plate to be operated in this case is a folding plate capable of holding the packaged product at substantially the same level as the front folding roller. The folding plate includes a left-right folding plate that folds the object to be packaged from the left-right direction and a rear folding plate that folds the object to be packaged from the front-rear direction. If the back fold plate is located above the left and right fold plates and it is at approximately the same level as the front fold roller, the back fold plate first penetrates the bottom side of the packaged product and then discharges. The pusher, along with the back folding plate, moves at the same speed as it ejects the packaged product. In the process, even if the tip of the packaged product rides on the front folding roller, the rear end is supported at almost the same level as the front folding roller, so the packaged product is labeled while maintaining its horizontal state. It is discharged to the position.

In addition, if the left and right folding plates are each composed of two upper and lower folding plates, and the rear folding plate is movably inserted between them, the left and right folding plates are provided at approximately the same level as the front folding roller. In this case, the left and right folding plates first invade the bottom side of the packaged product, and then the discharge pusher moves to discharge the packaged product. As a result, the packaged product is discharged to the label sticking position while maintaining the horizontal posture.

A packaging device having these operation modes is provided with a weighing unit in the front stage, and a label printer and a sticking unit above the label sticking position. Then, when the pricing mode is set, the weighing unit in the previous stage weighs the packaged product and transmits the result to the label printer. The label printer issues a pricing label based on the transmitted weighing result. The sticking unit receives the issued pricing label and sticks it to the packaged product.

Since the packaged product is packaged in a film together with the tray, the measured value includes at least the mass of the tray containing the contents and the mass of the film in which the contents are packaged, as well as wasabi, soy sauce, and sauce. The amount of secondary material such as, etc. may also be included. Therefore, it is necessary to register those masses as tare in the memory in advance. Then, when the pricing mode is set, the tare of the packaged product is read from the memory and set in the control unit. When the packaged product is weighed in this state, the weighed value includes the tare, so the control unit subtracts the tare from the weighed value to calculate the net weight and transmits it to the label printer. To do. The label printer prints product information (product name, price, weight, etc.) including the received net weight on the label and issues a pricing label. The sticking unit receives the issued pricing label and sticks it on the packaged product.

According to the present invention, even if a pricing label is attached to a packaged product under the pricing mode, the labeling position does not shift, so that the pricing label is bent or adheres to the surroundings. Can be avoided.

Explanatory drawing of the principle of failure occurrence of a conventional device. The external perspective view of the packaging apparatus which concerns on one Embodiment of this invention. FIG. 2 is a schematic front view of the inside of the packaging device of FIG. 3-3 arrow view of FIG. Top view of FIG. The block diagram of the control system of the packaging apparatus which concerns on the said embodiment. The figure which shows the arrangement example of the operation key. The figure which shows an example of the operation screen. The operation transition diagram of the said embodiment when the packaged product is discharged in the pricing mode.

Hereinafter, a packaging device according to an embodiment of the present invention will be described with reference to the drawings. The embodiments shown below do not limit the technical scope of the present invention.

[Overall device configuration]
In FIGS. 2 to 5, the packaging device 1 includes a front weighing unit 2, a packaging station 3 arranged behind the packaging station 3, a film roll holding mechanism 4 housed in a casing 1b on the left side, and a film roll. A film feeding mechanism 5 (see FIG. 3) that feeds out the film from, a film transporting mechanism 6 (see FIG. 3) that transports the fed film to the packaging station 3, and a film and film feeding mechanism 5 that conveys the film to the packaging station 3. A cutter mechanism 7 (see FIG. 3) that cuts the film between the two, a sealing mechanism 8 (see FIG. 4) that heat-seals the bottom surface of the packaged object W packaged at the packaging station 3, and a pricing label are issued. The label printer LP is provided, the affixing unit AP for affixing the issued label to the packaged object W or the packaged product, and the operation unit 20 for operating these are provided.

[Type of operation mode]
The packaging device 1 has a packaging mode in which the object to be packaged W placed on the measuring plate 12 of the measuring unit 2 is sent to the packaging station 3 as it is without weighing and packaged, and the packaged object placed on the measuring plate 12 is packaged. After weighing the object W, it is sent to the packaging station 3 for packaging, and then a pricing label is attached to the packaged product in the weighing packaging pricing mode, and the packaged product is weighed in the weighing pan 12 and then. It is sent to the packaging station 3, but is not packaged there, and is sent out as it is to the label affixing position, and has a pricing mode in which a pricing label reflecting the measurement result is affixed. The operation unit 20 of FIG. 2 is provided with a switching key 24 (see FIG. 8) described later for switching these operation modes on the display screen.

In this specification, "left and right" means a left-right direction toward the device 1 of FIG. 2, and a direction orthogonal to the left-right direction is a front-back direction. Further, the front side in the front-rear direction is the front side, and the opposite side is the back side. Further, the films F1 and F2 mean either one of the film F1 and the film F2, and may be simply referred to as the film F. Similarly, the film rolls R1 and R2 mean one of the film rolls R1 and the film rolls R2. Further, the packaging device 1 may package fresh food G or the like as it is, or may put it in a container such as a tray T for packaging, and the packaged object W includes these. In addition, a product that is weighed and priced as it is without packaging the already packaged product is regarded as a packaged product.

[Weighing unit]
The measuring unit 2 measures the packaged object W before packaging and the packaged product, and as shown in FIG. 4, conveys the measuring instrument 2a, the carry-in belt 2b, the drive roller 2c, the measuring tray 12, and the measuring plate 12. It includes a bar 13 and a camera 14. The measuring instrument 2a is provided with a load sensor such as a load cell inside, and when the packaged object W or the packaged product is placed on the measuring plate 12 supported by the sensor, the load sensor is proportional to the placed article. Outputs an analog signal. The measuring unit 2 converts the analog signal into a digital quantity and outputs it to the control unit 9 described later.

The carry-in belt 2b is hung between a pair of rollers and circulates in one direction by the rotation of one drive roller 2c. A transport bar 13 extending in a direction orthogonal to the transport direction is attached to the belt 2b, and the transport bar 13 stands by at an initial position on the front side of the weighing pan 12. Then, when the object to be packaged W or the packaged product is placed on the measuring plate 12 and the weighing is completed, the drive roller 2c is rotationally controlled to transport the transport bar 13 to the position immediately before the lift head 33 and stop. As a result, the packaged object W and the packaged product placed on the measuring plate 12 are sent onto the lift head 33. Subsequently, when the lift head 33 rises and there are no obstacles behind the transfer bar 13, the drive roller 2c is rotationally controlled again to return the transfer bar 13 to the initial position and stop. Such an operation is performed by the control unit 9, which will be described later, controlling the rotation of the drive roller 2c.

The weighing pan 12 is formed of a rectangular tray on which the object to be packaged W is placed, and is supported by a load sensor (not shown). A raised portion 12b that rises from the mounting surface 12a of the object to be packaged W is formed on the front side of the measuring plate 12, and this raised portion 12b serves as a positioning reference when the object to be packaged W is placed on the measuring plate 12. ing.

The camera 14 is provided below the discharge table 82 above the measuring plate 12, and images the packaged object W and the packaged product placed on the measuring plate 12. The captured image signal is transmitted to the control unit 9, where the plane size, height, and the like of the packaged object W are grasped.

[Packaging station]
The packaging station 3 is an area for packaging the object to be packaged W carried in from the measuring unit 2 with a film F that is horizontally tension-held. In this region, a lift mechanism 30 that pushes up the packaged object W sent from the measuring unit 2 toward the tension-held film F, and a film peripheral portion that is arranged above the lift mechanism 30 and pushed up by the packaged object W. Is provided with a folding mechanism 37 for folding the packaged object W toward the bottom surface side.

[Lift mechanism]
The lift mechanism 30 is adapted to move the support base 31 to which the plurality of lift heads 33 are attached up and down by the ball screw 34. The lift head 33 is tiltably attached to the upper part of the fixed post 32, and when a folding plate described later enters the bottom surface side of the packaged object W from the left-right direction or the front-rear direction, the lift head 33 is attached to the fixed post 32 in the front-rear direction and the left-right direction. It is designed to fall down. Further, each fixed post 32 is fixed on the support base 31.

[Folding mechanism]
As shown in FIGS. 3 to 5, the folding mechanism 37 includes left and right folding plates 76 and 77, a rear folding plate 78, a front folding roller 79, and a discharge pusher 79a.
The left and right folding plates 76 and 77 fold the left and right portions of the peripheral edge of the film into the bottom surface of the object to be packaged W, are arranged below the rear folding plate 78, and are horizontally moved in the left-right direction by a motor and a timing belt (not shown). It is configured as follows. The rear folding plate 78 folds the rear side of the peripheral portion of the film protruding from the packaged object W into the bottom surface of the packaged object W, and is arranged at substantially the same level as the front folding roller 79, and is a motor and a timing belt (not shown). It is configured to move horizontally in the front-back direction.

These folding plates 76 to 78 are controlled by the control unit 9 so as to operate in different modes depending on the set operation mode.

[Operation mode of folding mechanism]
First, when the packaging device 1 is set to the packaging mode or the weighing packaging pricing mode, when the bottom surface of the object to be packaged W is lifted to the level of the front feed roller 79 by the lift head 33, the left and right folding plates 76, 77 and the back folding plate 78 enter between the packaged object W and the lift head 33, and the peripheral edge of the film protruding from the packaged object W is folded into the bottom surface side of the packaged object W. At that time, the lift head 33 is pushed by these folding plates 76 to 78 and falls down.

Subsequently, the discharge pusher 79a pushes the rear end portion of the packaged object W covered with the film F to the discharge table 82. In the process, the peripheral portion of the front side film of the object to be packaged W that rides on the front feed roller 79 is pushed by the front folding roller 79 and folded into the bottom surface side of the object to be packaged W. As a result, the peripheral edges of the film protruding from the four sides of the object to be packaged W are overlapped on the bottom surface side of the object to be packaged and are pushed out to the sealing mechanism 8 in that state. The sealing mechanism 8 includes a heat roller heated to a predetermined temperature, and the film folded into the bottom surface is heat-sealed while the packaged product passes through the heat roller.

On the other hand, when the packaging device 1 is set to the pricing mode, the left and right folding plates 76 and 77, which are one step lower than the front folding roller 79, remain in the retracted position and do not move. Then, when the bottom surface of the packaged product is lifted to the level of the front folding roller 79 by the lift of the lift head 33, the rear folding plate 78 invades between the bottom surface side of the packaged product and the lift head 33 and the packaged product. Support the rear end from below. Subsequently, the discharge pusher 79a pushes the rear end portion of the packaged product together with the rear folding plate 78 to push the packaged product to the discharge table 82 at the same speed. At that time, the lift head 33 descends when the front end portion of the packaged product rides on the front folding roller 79. In this way, the packaged product is pushed out to the label affixing position while maintaining a substantially horizontal posture.

When the rear folding plate 78 and the discharge pusher 79a move to just before the front folding roller 79, they immediately reverse and return to their respective initial positions. Further, above the packaging station 3, a pressing mechanism for lightly pressing the packaged object W pushed up by the lift mechanism 30 from above to stabilize the posture is provided, but this is omitted in the drawings.

The discharge pusher 79a is divided into two parts on the left and right so as not to interfere with the pressing mechanism that presses the packaged object W or the packaged product from above. Then, it is configured to move horizontally in the front-rear direction by a motor and a timing belt (not shown).

As shown in FIGS. 2 and 3, the film roll holding mechanism 4 is provided in the casing 1b so that two film rolls R1 and R2 of the same type or different types are mounted. These film rolls R1 and R2 may be the same, but those having different width dimensions and extension rates are mounted according to the tray size and packaging form, and one of these is designated. It is designed to be appropriately selected and used according to the product.

In FIG. 3, the holding mechanism 4 includes an upper roll holding portion 41 for holding one film roll R1, a lower roll holding portion 42 for holding the other film roll R2, an upper roll holding portion 41, and a lower roll. It includes a drive unit 43 that selectively rotates the holding unit 42 to feed the film F from one of the film rolls R1 and R2.

The film feeding mechanism 5 delivers the film F1 drawn from the film roll R1 or the film F2 drawn from the film roll R2 to the pair of feeder units 61 and 62 of the film conveying mechanism 6 in the casing 1b. Details are disclosed in Japanese Patent No. 5666943, and the description thereof will be omitted here.

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, in order to spread the film F received from the film feeding mechanism 5 in a direction orthogonal to the transport direction thereof, a pair of front and rear first feeder units 61 and second feeder units 62, and a first feeder moving unit for moving the first feeder unit 61 and the second feeder unit 62. 63, a second feeder moving unit 64 is provided.

The first and second feeder units 61 and 62 convey the film F in a state where both sides in the width direction are sandwiched between belts, and the slide shaft 66 extending in the width direction of the film F is provided on the longitudinal side thereof. 67 is provided and is movably supported by the slide shafts 66 and 67. Then, when the first feeder moving unit 63 and the second feeder moving unit 64 are driven, the first and second feeder units 61 and 62 move in the film width direction along the slide shafts 66 and 67, and this operation causes the first and second feeder units 61 and 62 to move in the film width direction. , The film F stretched on the packaging station 3 is kept tense.

The cutter mechanism 7 of FIG. 3 cuts the film F between the film delivery mechanism 5 and the film transfer mechanism 6 after the film delivery mechanism 5 delivers the film F to the film transfer mechanism 6. Therefore, the cutter mechanism 7 has a cutting blade 7a longer than the film width, and is configured to reciprocate in the vertical direction by an actuator (not shown).

The sealing mechanism 8 of FIG. 4 heat-seals the film F folded on the bottom surface side of the object W to be packaged, and has a transport roller and a heating roller arranged at the same level as the front folding roller 79. Then, when the object W to be packaged is pushed out by the discharge pusher 79a, the film folded on the bottom surface is heat-sealed by these rollers. Therefore, these rollers are composed of freely rotating free rollers.

[Label printer and sticking unit]
In FIG. 2, the label printer LP is arranged at the upper right corner on the front side of the packaging station 3 to issue a pricing label. At least the product name, price, and net weight are printed on this pricing label. The sticking unit AP is arranged in front of the label printer LP, receives the pricing label issued by the label printer LP, discharges it to the label sticking position, and sticks it toward the product. Therefore, the sticking unit AP is configured to move between the label issuing port of the label printer LP and the label sticking position.

When the front cover 1c on the upper part of the device is flipped up, the sticking unit AP retracts to the left corner and switches to the hand sticking mode. In this mode, the label printer LP automatically issues a pricing label when the product is placed on the weighing pan 12. The worker takes the issued pricing label and attaches it on the product placed on the weighing pan 12.

[Controller unit]
FIG. 6 shows a block diagram of the control system of the packaging device 1. In this figure, the control unit 9 is composed of a computer and controls the operation of each of the above-described mechanisms under each operation mode by executing a program stored in the storage unit 90. Therefore, various programs are stored in the storage unit 90 in the control unit 9. Further, in the storage unit 90, data on a plurality of types of films, data such as a product unit price and a tray size matching the product unit price, a serving height, etc., timing data for folding the film, and timing data for opening the film are registered. Has been done. In the case of packaged products, the weight of tare such as trays and films, and if there are auxiliary materials such as "wasabi", "soy sauce", "sauce", and "decoration", the weight of those tare is for each product. It is registered.

A measuring unit 2, a film roll holding mechanism 4, a film feeding mechanism 5, a film transport mechanism 6, a cutter mechanism 7, a sealing mechanism 8, a lift mechanism 30, a folding mechanism 37, and an operating unit 20 are electrically connected to the control unit 9. These are driven and controlled by the control unit 9. Further, the label printer LP and the sticking unit AP are equipped with their own computers and are driven and controlled based on the command of the control unit 9. Further, the operation unit 20 is provided with a touch panel type display unit 21 shown in FIG. 2, an operation key 22, and an emergency stop switch 23.

FIG. 7 shows an example of the operation key 22, in which the upper "M special" key next to the number key NK is operated when discounting a product, and the "blank feed" key next to the operation key 22 is used. , Operated when issuing one label. The "Fixed amount" key, which is one step below them, is operated when changing the fixed amount or when changing the unit price product to a fixed price product, and the "Unit price" key is operated when setting the unit price, and "Call". The key is operated when recalling the data of the registered product. Further, the "zero" key is operated when correcting the zero point of the measuring unit 2, the "print" key is operated when printing and issuing a label, and the "wind" key is a tare entered with a number key. It is operated when registering the weight, the weight of the auxiliary material measured by the measuring instrument 2a, etc. as a tare.

This packaging device 1 is set to the "weighing / packaging / pricing mode" in the normal mode, and when a product of "beef peach slice" is called under this mode, a screen as shown in FIG. 8 is displayed. It is displayed on the display unit 21. In FIG. 8, if the switching key 24 displayed as "Packaging / value" in the lower right corner is touched, the "weighing / packaging / pricing mode" is switched to the "price mode", and the display of the switching key 24 is also ". Switch from "Package / Price" to "Price". Further, when the key 24 is touched, the "price mode" is switched to the "packaging mode", and the key 24 display is also switched from the "price" to the "packaging". If the switching key 24 is touched again, the "packaging mode" is switched to the "weighing / packaging / pricing mode", and the "packaging" display is also switched to the original "packaging / value" display.

Next, the control of the control unit 9 under these modes will be described.
[Weighing / packaging / pricing mode]
First, when the operation of the packaging device 1 is started, the packaging device 1 is set to the weighing / packaging / pricing mode by default. In this mode, when the operator presses the call number with the number key NK of FIG. 7 and then presses the "call" key CK, the control unit 9 reads the product information corresponding to the call number from the storage unit 90. It is displayed on the display unit 21. FIG. 8 shows an example of a screen displayed by pressing the number key NK of “5” in FIG. 7 as a call number and then pressing the “call” key CK.

On this screen, since the net amount of the called "beef peach slice" before weighing is -10 g, it can be seen that the tare (tray mass) is 10 g and the unit price is 280 yen. Then, when the operator places the tray T on which the "beef peach slice" is arranged at a predetermined position on the measuring plate 12, the measuring unit 2 weighs it and controls the obtained measured value including the tare. Output to.

On the other hand, the image information of the "beef peach slice" captured by the camera 14 is input to the control unit 9, where the size and height of the tray T placed on the measuring plate 12 are determined, and based on this. A film F having a suitable length is delivered via the film delivery mechanism 5 and the film transfer mechanism 6. Then, when the cutter mechanism 7 is activated, the film F cut to a suitable length is tension-held at the packaging station 3.

On the other hand, the control unit 9 subtracts the tare read from the storage unit 90 from the measured value to obtain the net amount, and multiplies it by the unit price of 280 yen to calculate the price. The calculated result is output to the display unit 21 and simultaneously transmitted to the label printer LP together with the product name "beef peach slice". Subsequently, the control unit 9 rotates the drive roller 2c to run the transport bar 13. As a result, the packaged object W placed on the tray is sent to the lift head 33.

When the packaged object W is sent to the lift head 33, the control unit 9 drives the lift mechanism 30 to raise the lift head 33, and then drives the drive roller 2c to return the transport bar 13 to the initial position. Then, when the ascending lift head 33 reaches the top dead center, the control unit 9 operates the folding mechanism 37 to fold the peripheral portion of the film protruding from the periphery of the object W to the bottom surface side of the tray. ..

Subsequently, the control unit 9 drives the discharge pusher 79a to push the packaged object W to the discharge table 82. As a result, while the object to be packaged W gets over the front folding roller 79, the peripheral portion of the front film is folded toward the bottom surface side, and is heat-welded while passing through the heat mechanism 8.

On the other hand, the label printer LP controlled by its own computer issues a pricing label based on the information received from the control unit 9, and then the sticking unit AP receives the issued pricing label and labels it. Move to above the sticking position and wait.

Then, just before the packaged object W pushed out by the discharge pusher 79a reaches the label sticking position, the control unit 9 gives a drive instruction to the sticking unit AP, and the sticking unit AP starts operation based on the drive instruction. As a result, the pricing label is affixed to a predetermined position of the packaged object W at the timing when the packaged object W reaches the label affixing position.

[Packaging mode]
Next, when the operator touches the switching key 24 on the display screen of FIG. 8, the mode is switched to the packaging mode in which the called "beef peach slice" is simply packaged. In this mode, when the packaged object W is placed on the weighing pan 12, the tray size and height are determined based on the image information captured by the camera 14, and the drive roller 2c is rotationally controlled to control the packaged object W. Is sent to the lift head 33. At the same time, the film F cut to a length suitable for the tray size is transported to the packaging station 3 where tension is maintained. After that, as described above, the folding mechanism 37 operates to fold the peripheral portion of the film to the bottom surface side of the packaged object W, and then the discharge pusher 79a pushes the packaged object W onto the discharge table 82. .. In this case, since the pricing label is not issued, the packaged product is stored in the refrigerator or the like as it is.

[Price mode]
Next, on the display screen of FIG. 8, when the switching key 24 is touched twice in succession, the packaged product of the called "beef peach slice" is switched to the pricing mode in which the pricing label is attached. .. In this mode, when the packaged product is placed on the measuring plate 12, the measuring unit 2 weighs the packaged product, and the obtained measured value including the tare is output to the control unit 9.

The control unit 9 reads out the tare (tray mass, film mass, auxiliary material amount, etc.) registered for the packaged product of "beef peach slice" to obtain the net amount, and multiplies it by the unit price of 280 yen to calculate the price. .. The calculated result is output to the display unit 21 and transmitted to the label printer LP together with the product name. Subsequently, the control unit 9 rotates and controls the drive roller 2c to drive the transport bar 13, whereby the packaged product is fed to the lift head 33.

When it is sent to the lift head 33, the lift mechanism 30 is then driven, and then the drive roller 2c is rotationally controlled and the transfer bar 13 returns to the initial position. Then, when the ascending lift head 33 reaches the top dead center, the control unit 9 first operates the rear folding plate 78 to invade the bottom surface side of the packaged product M (see FIG. 9A). ).

Next, the control unit 9 drives the discharge pusher 79a slightly later than the rear folding plate 78, and pushes the packaged product M onto the front folding roller 79 in cooperation with the rear folding plate 78. At that time, as shown in FIG. 9B, the packaged product M takes a forward leaning posture and hits the front folding roller 79, but since the front folding roller 79 is a free roller, the packaged product M is , It is easily overcome and pushed out in a horizontal posture as shown in FIG. 9 (c).

On the other hand, the label printer LP issues a pricing label L based on the information received from the control unit 9, and then the affixing unit AP receives the issued pricing label L and puts it above the label affixing position RP. Move to and wait.

Then, just before the packaged product M pushed out by the discharge pusher 79a reaches the label sticking position RP, the control unit 9 gives a drive command to the sticking unit AP, and the sticking unit AP operates based on this, so that the packaged product M has been packaged. When the predetermined position of the product M reaches the label affixing position RP, the pricing label L reaches there and is affixed. As described above, even in the pricing mode, the packaged product M is kept in the horizontal posture and sent to the label sticking position RP, so that the sticking position of the pricing label L does not shift.

The rear folding plate 78 and the discharge pusher 79a are inverted at the respective stroke ends and returned to their original initial positions. Further, the lift head 33 is also returned to the original initial position after the packaged product M rides on the front folding roller 79. In this way, when the next packaged product M is placed on the weighing pan 12, the same operation is repeated again, and the pricing label L is affixed to the next packaged product M.

Although one embodiment of the present invention has been described above, the present invention is not limited to this, and other embodiments can also be adopted. For example, in the above embodiment, in the pricing mode, the rear folding plate 78 is preceded and then the discharge pusher 79a is operated. However, by operating the left and right folding plates together, the packaged product M You may try to prevent the front end of the from sinking.

Further, in the case of a folding mechanism in which the left and right folding plates 76 and 77 are each composed of two upper and lower folding plates and the rear folding plate 78 is movably inserted between them, the rear folding plate is folded under the pricing mode. Instead of the plate, the left and right folding plates can be brought close to each other to hold the packaged product M in a horizontal state, and in that state, the discharge pusher 79a can be moved to push the packaged product to the labeling position. ..

Further, in the pricing mode of the above embodiment, a pricing label reflecting the weighing result by the weighing unit is attached, but in the case of a flat-rate product, it is not necessary to reflect the weighing result. The pricing label of the case may be one in which the product name and the price are displayed. Therefore, since weighing by the measuring unit in this case is not essential, when the packaged product is placed on the measuring unit, the packaged product is sent to the lift head as it is when the placement is detected. May be good.

1 Packaging device
2 Weighing unit
W Packaged
M pre-packaged product
F film 76 One of the left and right folding plates 77 The other of the left and right folding plates 78 Back folding plate 79a Discharge pusher
M Packaged product LP label printer AP sticking unit
L pricing label

Claims (3)

A packaging device to discharge the label sticking position at the discharge pusher while packaging the articles to be packaged by folding the bottom side of the material to be packaged the film peripheral edge portion protruding from the package item at the left and right folding plates and the rear folding plates,
It said left and right folding plates, while folding the film on the bottom side of the articles to be packaged between the rear folding plates packaged in the film, with packaging value extruding said to labeling position the objects to be packaged with the discharge pusher It is provided with a mode and a pricing mode in which a packaged product that has already been packaged is discharged to the label affixing position as it is without the packaging.
In the pricing mode, while the left and right folding plates are retracted from the packaged object, the rear folding plate is inserted into the bottom surface of the packaged product, and the rear folding plate and the discharge pusher are used. A packaging device for discharging the packaged product to the label affixing position.
In a packaging device in which the peripheral edge of the film protruding from the packaged object is folded into the bottom side of the packaged object by the left and right folding plates and the rear folding plate, and the packaged object is wrapped and discharged to the label sticking position with a discharge pusher.
With the left and right folding plates and the rear folding plate, the film is folded into the bottom surface side of the object to be packaged, wrapped with the film, and the packaged object is pushed out to the label sticking position by the discharge pusher. It is provided with a mode and a pricing mode in which a packaged product that has already been packaged is discharged to the label affixing position as it is without the packaging.
The left and right folding plates are composed of two upper and lower folding plates, and the rear folding plate is movably arranged between the upper and lower folding plates.
In the pricing mode, the left and right folding plates invade the bottom surface side of the packaged product to support the packaged product, and in that state, the discharge pusher pushes the packaged product to attach the label. A packaging device characterized by discharging to a position.

A weighing unit is provided in the previous stage, a label printer and a sticking unit are provided above the label sticking position, and when the pricing mode is set, the weighing unit weighs the packaged product and based on the weighing result. The packaging device according to claim 1 or 2, wherein the label printer issues a pricing label, and the affixing unit affixes the issued pricing label to the packaged product.

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