JP3484244B2 - Packaging equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging device for packaging a product to be packaged with a packaging film obtained by feeding a film having a predetermined width by a feeding means and cutting the film.

[0002]

2. Description of the Related Art For example, a packaging device for packaging a product such as a fresh food stored in a tray with a film is widely used. This type of packaging device generally holds both side edges of a film having a predetermined width with a feed belt and sends out a predetermined amount to a packaging unit, and then cuts the film, and holds the obtained packaging film under tension. At the same time, the tray containing the products is carried into the packaging device by a carry-in conveyor, and is pushed up by a lifting device from below the packaging film held under tension to be closely attached to the film for packaging. .

In this case, various packaging conditions are set such that the front, rear, left and right side edges of the packaging film are folded by folding plates on the bottom side of the tray pushed up by the lifting device. The required dimension of the packaging film differs depending on these conditions, and for example, the larger the folding margin of the side edge portion, the larger the packaging film is required. Further, the required dimension of the packaging film varies depending on the size of the tray and the degree of rise of the product.

At this time, since the width of the film to be fed is constant, the size of the obtained packaging film is adjusted by increasing or decreasing the feeding amount of the film having the predetermined width. The feed amount of the film having the predetermined width is increased or decreased in consideration of the size of the product and the packaging conditions.

[0005]

However, unless the feeding amount is increased / decreased accurately, an oversized or undersized packaging film can be obtained for the product to be packaged, and as a result, the folding margin becomes too large. As a result, not only the appearance of the article to be packaged is deteriorated, or a packaging margin is not formed but folding defects occur, but also an excessively large film is obtained, so that the film having a predetermined width is wasted.

The present invention addresses the above-mentioned problems in a packaging device for packaging a product to be packaged with a packaging film obtained by feeding a film having a prescribed width by a feeding means and cutting the film, and the packaging condition is prescribed. It is an object of the present invention to obtain a packaging film that can satisfy the above conditions and can package a packaged item with a minimum film consumption amount, and to accurately package the packaged item with this packaging film.

[0007]

The present invention is characterized in that it is configured as follows in order to solve the above problems.

First, the invention according to claim 1 of the present application (hereinafter referred to as the "first invention") is to be wrapped with a packaging film obtained by feeding a film having a predetermined width by a feeding means and cutting the film. A packaging device for packaging an article, comprising: identification means for identifying a dimension of an article to be packaged; and packaging the article to be packaged satisfying a predetermined condition based on the dimension identified by the identification means. Calculating means for calculating the dimensions of the packaging film, and the minimum feed amount of the film having the above-mentioned predetermined width capable of obtaining the packaging film having the dimensions calculated by the calculating means, and determining the orientation of the packaged product with respect to the film. Setting means for setting a predetermined criterion as an element, and control means for controlling the driving amount of the feeding means so that the film having the predetermined width is fed by the minimum feeding amount set by the setting means. Characterized in that the adjusting means for adjusting the loading of the 該被 package is provided as well packaged article in the direction set by the setting means is carried into the packaging device.

On the other hand, the invention according to claim 2 (hereinafter referred to as "second invention"
Ming ". ) Is a film sender with a specified width
Package obtained by sending out in steps and cutting this
A packaging device for packaging an item to be packaged with a film,
Identification means for identifying the dimensions of the packaged product and the identification means
Based on the dimensions to be separated, satisfy the specified conditions and
Calculate the size of the packaging film that can package the packaged product
Calculation means to be output and packaging of dimensions calculated by the calculation means
The maximum width of the film of the above specified width that can obtain a film
Judge the orientation of the packaged item relative to the film by the small feed amount
Setting means for setting with a predetermined judgment criterion as an element, and the setting means
Film with the above specified width by the minimum feed amount set by the fixing means
Control the drive amount of the feeding means so that
Packaged in the direction set by the control means and the setting means
Carrying in the goods to be packaged so that the goods can be carried into the packaging device.
Is provided with a display means for displaying the direction of
To collect.

The invention according to claim 3 (hereinafter referred to as " third invention") is the same as the first or second invention , but the calculating means is the condition (1) all side edges of the packaging film. Part is folded into the bottom side of the packaged item by a predetermined amount,
And condition (2) calculating a dimension of a packaging film that can package a product to be packaged while satisfying that at least one of the opposite side edges of the bottom side is overlapped by a predetermined amount. Is characterized by.

Furthermore, the invention according to claim 4 (hereinafter referred to as " fourth aspect "
Invention. ) Is any of the first to third inventions
In any of the configurations, the setting means, when the length of the longer side of the packaging film of the dimension calculated by the calculating means is equal to or less than the width of the predetermined width film, the orientation of the packaged item The longitudinal direction is set to be the width direction of the film having the predetermined width, and the length of the shorter side of the packaging film having the calculated size is set as the minimum feed amount of the film having the predetermined width.

The invention according to claim 5 (hereinafter referred to as " fifth aspect "
Invention. ), In configuration of the first invention, the adjustment means, by abutting the abutting member on a part of the package on its way carrying to the packaging apparatus, the orientation of該被package 90 degrees It is characterized by being changed.

[0013]

According to the first aspect of the present invention, the size of the packaging film capable of packaging the packaged item satisfying the predetermined condition is calculated by the calculating unit based on the size of the packaged item identified by the identifying unit. Since it is calculated, the size of the product to be packaged and the required dimension of the packaging film corresponding to various packaging conditions are calculated.

Further, since the setting means sets the minimum feed amount of the film having the predetermined width capable of obtaining the packaging film having the size calculated by the calculating means, the packaging film having the above-mentioned required size is set to the film having the minimum predetermined width. The feed amount of the film that can be obtained by the consumption amount is set. In that case, the setting means sets the above-mentioned minimum feed amount on the basis of a predetermined judgment criterion having the orientation of the article to be packed with respect to the film with a predetermined width as a decision element, and therefore the setting of the minimum feed amount is for the article to be packed with respect to the film with a predetermined width. It is done considering the direction,
As a result, at the same time as the setting of the minimum feed amount of the film having the predetermined width, the orientation of the article to be packaged with respect to the film having the predetermined width is set.

Since the drive amount of the feeding means is controlled by the control means so that the film having the predetermined width is fed by the minimum feed amount, the required size that can package the article to be packaged while satisfying the predetermined packaging condition. Will be obtained with the minimum consumption amount of the film having the predetermined width.

Furthermore, the carrying-in of the article to be packaged is adjusted by the adjusting means so that the article to be packaged is carried into the packaging apparatus in the above-mentioned set direction, so that the article to be packaged is obtained with the above-mentioned packaging film with high accuracy. It will be carried into the packaging device in the direction in which it is packaged.

According to the second aspect of the invention, in the direction set as above
Transport the packaged item so that it can be loaded into the packaging device.
Since the direction of entry is displayed on the display means, the operator can
The packaged item in the specified direction and
Become.

On the other hand, according to the third aspect of the present invention, the calculating means has the condition (1) that all the side edges of the packaging film are folded into the bottom side of the article to be packaged by a predetermined amount, and the condition (2) bottom side. Since the size of the packaging film that can package the product to be packaged is satisfied by satisfying the fact that at least one of the opposite side edge parts of the side edge part that is folded into is overlapped by a predetermined amount, the product to be packaged is sealed. Thus, the required dimensions of the packaging film satisfying the packaging condition of packaging as described above are calculated.

Further, according to the fourth aspect of the invention, the setting means sets the length of the longer side of the packaging film having the dimension calculated by the calculating means to be less than the width of the predetermined width film. Set the orientation of the packaged product so that its longitudinal direction is the width direction of the film with the specified width, and set the length of the shorter side of the packaged film of the above calculated dimension as the minimum feed amount of the film with the specified width. Therefore, in the case where the longer side of the packaging film having the above-described dimensions corresponds to the longitudinal direction of the packaged item, the orientation of the packaged item with respect to the predetermined width film and the minimum feed amount of the predetermined width film are Will be set.

When the longer side of the calculated wrapping film corresponds to the width direction of the article to be packaged, the direction of the article to be packaged is the width direction of the film having a predetermined width. The orientation is set. Further, when the length of the longer side of the packaging film having the dimension calculated by the calculation means exceeds the length of the width of the predetermined width film, the length of the longer side is the minimum feed amount of the predetermined width film. When the longer side corresponds to the longitudinal direction of the packaged item, the orientation of the packaged item is set such that the longitudinal direction is the feed direction of the film having a predetermined width, and When the longer side corresponds to the width direction of the packaged product, the orientation of the packaged product is set such that the width direction is the film feeding direction of the predetermined width.

According to the fifth aspect of the invention, the adjusting means brings the abutting member into contact with a part of the article to be packaged which is being carried into the packaging apparatus, so that the orientation of the article to be packaged is 90 degrees.
Since the orientation is changed, the orientation of the article to be packaged is automatically changed to the orientation in which the packaging film accurately wraps.

[0022]

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 and 2, the packaging apparatus 1 according to this embodiment has a weighing-in / carrying-in mechanism 2 provided at the central portion of the front surface of the main body 1a and also at the side portions of the main body 1a. A roll supporting mechanism 3 for rotatably supporting a roll F ′ of the film F, a film feeding mechanism 4 for feeding the film F from the roll supporting mechanism 3, and both side portions of the film F fed by the feeding mechanism 4 are respectively sandwiched. Then, the film transport mechanism 6 (see FIG. 2) for transporting the film to the packaging station 5 provided above the weighing-in mechanism 2 and the film F transported to the packaging station 5 are folded into the bottom side of the tray and fresh. A film folding mechanism 7 (see FIG. 2) for packaging a food product or the like to be packaged together with the tray, and a film folding mechanism 7 arranged in front of the packaging station 5 to store the product to be packaged. The sealing mechanism 8 heat-seals the film F folded on the bottom surface side.

A display unit 9 is provided on the upper portion of the main body 1a.
a and an operating portion 9b, each of the above-mentioned mechanisms 2, 4, 6, 7,
A control device 9 for controlling the operation of 8 and for calculating the price of the packaged product based on a signal indicating the weight of the packaged product measured by the weighing-in mechanism 2;
A label printer 10 for printing the weight, price, etc. of a packaged product on a label based on a signal from the label printer 10 and issuing the label is provided.

Next, the structure of the film supply device from the roll support mechanism 3 to the film transport mechanism 6 will be described.

First, as shown in FIG. 2, the roll supporting mechanism 3 includes a roll bar 11 rotatably supported by the main body 1a.
And a fixed holder 12 fixed to one side of the roll bar 11, and a movable holder 13 movably fitted to the roll bar 11 according to the width dimension of the film roll F ′. Both holders 1 inserted into the bar 11
The film F is fed upward by the rotation of the film roll F ′ held between the Nos. 2 and 13.

Here, as shown in FIGS. 2 and 3, the movable holder 13 is formed with a large-diameter flange portion 13a and a slide having an engaging portion 14a for engaging with the flange portion 13a. The member 14 is supported by the main body 1a so as to be movable in the width direction of the film F. The film width sensor 16 attached to the slide member 14 via the attachment member 15 and the movable side transport unit 42 that holds one side portion of the film F in the film transport mechanism 6 described later via the bracket 17. Due to the positional relationship with the attached detected member 18, the transport mechanism 6
The distance between the pair of transport units 41 and 42 that sandwiches both sides of the film F in FIG.
It is adapted to be automatically adjusted according to the width of the film roll F ′ supported by.

A film feeding mechanism 4 is arranged above the roll supporting mechanism 3. Next, the structure of the mechanism 4 will be described.

As shown in FIG. 3, the film feeding mechanism 4 is provided between a pair of feed rollers 22 and 23 rotatably driven by a motor 21 and a solid line position and a chain line position of the main body 1a about a support shaft 24. And a pressing roller 26 that is supported by a swinging frame 25 that is swingable with the pressing roller 26 that is in contact with the feed roller 23.
By the rotation of 26, the film F is fed from the film roll F ′ supported by the roll support mechanism 3.

A cutter 28, which is driven by a solenoid 27 and forms perforations in the width direction of the film F, is disposed between the feed rollers 22 and 23. In addition, the swing frame 25 has the transport mechanism 6
A film carry-in conveyor 29 is provided, and a clamp member 31 which is driven by a solenoid 30 and clamps a side portion of the film F is provided between the film carry-in conveyor 29 and the carry-in conveyor 29.

On the other hand, the film transport mechanism 6 holds the one side portion of the film F fed from the feeding mechanism 4 and feeds it to the packaging station 5, and the other side of the film F. It has a movable side transfer unit 42 which holds the side part and transfers it to the packaging station 5.

As shown in FIGS. 2 and 3, female screw blocks 43, 43 are fixedly provided on the lower surface of the movable side transport unit 42 at two positions in front and rear, and these blocks 43, 43 are also provided. Are respectively screwed into a pair of front and rear screw shafts 44, 44 rotatably supported by the main body 1a, and the screw shafts 44, 44 are rotationally driven by a motor 45 via a chain 46, whereby the female screw is formed. Block 4
3, 43 or the movable side transport unit 42 as a whole is moved in the axial direction of the screw shafts 44, 44, and the distance between the movable side transport unit 42 and the fixed side transport unit 41 is adjusted. In this case, this adjustment is automatically performed according to the width of the film roll F ′ supported by the roll support mechanism 3 as described above.

The fixed side transport unit 41 and the movable side transport unit 42 have the same structure, and the configuration of the movable side carrier unit 42 will be described below.

As shown in FIG. 3, the movable side transport unit 4
Reference numeral 2 denotes a lower conveyance conveyor 50 in which a belt 49 is wound between a pair of pulleys 48, 48 supported on both front and rear ends of the frame 47, and a pair above the lower transport conveyor 50 also supported on both front and rear ends of the frame 47. Pulleys 51, 5
An upper conveyor 5 having a belt 52 wound around one
3 and the belt 5 in the upper conveyor 53
The lower surface traveling portion of No. 2 and the upper surface traveling portion of the belt 49 of the lower transfer conveyor 50 are arranged so as to be in contact with each other. Then, the motor 54 (see FIG. 5) drives the pulley 48 of the lower transfer conveyor 50, whereby the belts 49 and 52 of both conveyors 50 and 53 run, and the film sandwiched between these belts 49 and 52. F is A
It is designed to be transported in the direction.

A plurality of clamp members 55 ... 55 are arranged below the upper traveling portion of the belt 49 of the lower conveyor 50 along the traveling direction. 55 are solenoids 56, 56.
58 are moved up and down via the link members 57, 57, bar members 58 ... 58, and lever members 59 ... 59, and at the raised position, the upper traveling portion of the belt 49 of the lower conveyor 50 is pushed up to lift the belt of the upper conveyor 53. The side surface of the film F sandwiched between the belts 49 and 52 is clamped at the time of being brought into close contact with the lower surface running portion of the belt 52.

At the end portions of the lower transfer conveyors 50, 50 in the fixed-side and movable-side transfer units 41, 42 constituting the film transfer mechanism 6, the pulleys 48, 48 are attached to the shafts of the front-side pulleys 48, 48. The film peeling discs 60, 60 having a diameter larger than 48 are attached, respectively, and the frame 47 of both transport units 41, 42,
The discharge film receiving plates 61, 61 extending from the lower end of the film peeling disks 60, 60 slightly obliquely upward to the front are fixedly mounted on the film 47.

Here, the overall operation of the packaging device 1 will be briefly described.

As shown in FIG. 4, when a packaged product X containing fresh food or the like G in a tray T is placed on a weighing conveyor 71 in the weighing-in / carrying-out mechanism 2, the weight thereof is measured by a weighing machine 72.
Is weighed, a weight signal is output to the control device 9, and then the weighing conveyor 71 is operated to convey the article to be packaged X onto the lift device 73. Then, by the operation of the lift device 73, the conveyed product X is pushed up to the upper packaging station 5, and in the packaging station 5, the fixed side and movable side conveying units 41, 42 of the film conveying mechanism 6 are conveyed. Since the film F whose both sides are clamped is held in a tensioned state, the article to be packaged X is set to the raised position while pushing up the film F as shown by the chain line.

In this state, the film folding mechanism 7 operates to fold the peripheral portion of the film F to the bottom side of the tray T, so that the fresh food or the like G is packaged together with the tray T by the film F. Becomes After that, the article to be packaged X is sent out onto the sealing mechanism 8 and the film F folded as described above is sealed, and
A label on which a price calculated based on the weight signal output to the control device 9 is printed is issued by the label printer 10 and is attached to the packaged article X.

Next, the control system of the film supply unit, which is a feature of the present invention, and its operation will be described.

FIG. 5 shows a film supply control unit 9'in the control device 9 of the packaging apparatus 1. From the control unit 9 ', the feed roller motor 21 in the film feeding mechanism 4 and the cutter are shown. Control signals are output to the solenoid 27, the clamping solenoid 30, and the film width adjusting motor 45 that drives the movable side transport unit 42 of the film transport mechanism 6, the lower transport conveyor motor 54, and the clamping solenoid 56. ing. When the operation command output based on the input of the packaged article X to the weighing-in / carrying-out mechanism 2 is received, each of the motors 21, 45, and
The film F is supplied to the packaging station 5 in the following manner by the operation of the solenoid 54 and the solenoids 27, 30, 56.

First, before the product to be packaged X is loaded into the weighing-in mechanism 2, for example, an operator operates a key of the operation unit 9b so that the product code signal of the product to be packaged X becomes the control unit 9 '. Entered in. The control unit 9'stores in advance the three-dimensional dimensions of the packaged item X for each item code.
The control unit 9 ′ reads out the three-dimensional size of the packaged item X stored in the memory from the input code signal.

Next, the control section 9'calculates the dimension of the packaging film that can wrap the article X to be packaged from the read three-dimensional dimensions, satisfying the predetermined packaging conditions.
That is, as shown in FIG. 6, all side edges of the packaging film f are folded into the bottom surface side of the article to be packaged α by a predetermined amount α and the longitudinal direction of the article to be packaged X is controlled in the control section 9 ′. The side edge portions corresponding to are overlapped with each other by a predetermined amount β and the packaged product X
The packaging condition is set such that the package is sealed so that the control unit 9 ′ controls the read three-dimensional dimension L,
The required dimensions Lf1 and Lf2 of the packaging film f are calculated by substituting W and H and the predetermined amounts α and β into the following equations (1) and (2).

Lf1 = L + 2H + 2α (1) Lf2 = 2W + 2H + β (2) Next, the control section 9 ′ supports the calculated required dimensions Lf1 and Lf2 of the packaging film f and the roll support mechanism 3. By comparing the width of the film roll F ′ or the width of the film F, the minimum feeding amount of the film F required to obtain the packaging film f having the above size is set.

That is, the control section 9'firstly determines the dimension L above.
Of f1 and Lf2, those having a width equal to or smaller than the width of the film F are selected. For example, as shown in FIG. 7, when the dimension Lf1 is longer than Lf2 and both the dimensions Lf1 and Lf2 are equal to or less than the width Wf of the film F, the both dimensions Lf1 and Lf2.
Both are selected. Then, the control unit 9 ′ takes the side having the longer dimension Lf1 in the width direction (Wf) of the film F and sets the shorter dimension Lf2 taken in the feeding direction A of the film F to the minimum of the film F. Feeding amount Qmin
It is set as. As a result, the delivery amount of the film F is set to a minimum and the consumption amount of the film F or the film roll F ′ is suppressed while ensuring the packaging film f that satisfies the above packaging conditions.

On the other hand, the control section 9'sets the minimum feeding amount Qmin of the film F as described above and at the same time sets the orientation of the packaging film f with respect to the film F. The orientation of the packaged item X is set based on the orientation. That is, the control unit 9 ′ makes the longitudinal direction (L) of the article to be packaged X the same as the direction in which the longer side (Lf1) forming the alignment margin (β) is taken. The orientation of the article to be packaged X is set so as to be in the width direction (Wf) of the film F. As a result, the product X to be packaged is packaged by the obtained packaging film f satisfying the above packaging conditions.

Then, the control section 9'displays the orientation of the article to be packaged X set in this way on the display section 9a as the orientation of loading into the packaging apparatus 1, and the operator is instructed to display the orientation. Then, the packaged article X is loaded into the weighing-in mechanism 2. After that, when the operation command is output based on the input, the operation of each member is controlled by the control signal from the control unit 9 ′ so that the packaging film f having the calculated size is obtained.

That is, by rotating the feed rollers 22 and 23 in the film feeding mechanism 4, the film F is fed from the film roll F ′ supported by the roll supporting mechanism 3 and both side portions of the fed film F are fed. Passes through the carry-in conveyor 29 and the film transport mechanism 6
The belt 4 of the lower transfer conveyor 50 and the upper transfer conveyor 53 in the fixed-side and movable-side transfer units 41 and 42 of
It is sandwiched between 9, 52 and conveyed in the A direction in this state.

Then, the minimum feeding amount Qm set above
When only in is conveyed, the cutter solenoid 27
Is operated, the perforation is provided on the film F by the cutter 28, and thereafter, the film F is further conveyed in the direction A by the conveying mechanism 6, and the portion where the perforation is provided is the carry-in conveyor 29 and the lower part thereof. When the sheet passes between the clamp member 31 arranged in the above, the conveyance by the conveyance mechanism 6 is temporarily stopped. At this time, the clamp member 31 is moved upward by the operation of the solenoid 30,
Between the carry-in conveyor 29 and the portion immediately after the perforated portion of the film F is clamped,
In this state, the conveyors 50, 50, 53 of the transport mechanism 6,
When 53 is actuated again, the part of the film F in front of the perforations is separated from the part in the rear, and the packaging film f having the calculated dimensions is obtained.

When the obtained packaging film f reaches the predetermined position of the packaging station 5, the conveyors 50, 50, 53, 53 of the transport mechanism 6 are stopped and the solenoids 56, 56 are operated. Each clamp member 5
55 are moved upward, so that both side portions of the film F and the clamp members 55, ...
It will be sandwiched between 3, 53.

In this way, the setting of the packaging film f on the packaging station 5 is completed, and then the product X to be packaged is pushed up from below by the lift device 73, and the packaging operation by the packaging film f is performed. . In this case, the article to be packaged X is pushed up by the lift device 73 in the direction set as described above, so that it is packaged under the above packaging conditions.

In the above embodiment, the longer side (Lf1) of the packaging film f is longer than the film width Wf, but the shorter side (Lf2) is shorter than the film width Wf. By arranging the one side (Lf2) in the width direction (Wf) of the film F, it is possible to secure the packaging film f satisfying the above-mentioned packaging condition, and the dimension Lf1 of the longer side is set as the minimum feeding amount Qmin. Then, in this case, the orientation of the article to be packaged X is set such that the longitudinal direction (L) is the feeding direction A of the film F.

Further, in the above embodiment, for example, the condition that the longitudinal direction (L) of the article to be packaged X is limited to the direction in which the longitudinal direction (L) is the feeding direction A of the film F is set in the control section 9 '. That is, even if the longer side (Lf1) is less than the film width Wf, the shorter side (Lf2)
Is taken in the width direction (Wf) of the film F,
The worker only has to throw in the packaged item X in the same direction,
The work efficiency will be prioritized.

In the above embodiment, the packaged product X
The dimension Lf1 of the side corresponding to the longitudinal direction (L) of the package was calculated to be longer than the dimension Lf2 of the side corresponding to the width direction. However, according to each dimension L, W, H of the article to be packaged X and each predetermined amount α, β. ,
Alternatively, depending on which direction the alignment margin (β) is set with respect to the article to be packaged X, the dimension Lf1 of the side corresponding to the longitudinal direction (L) is calculated to be shorter than the dimension Lf2 of the side corresponding to the width direction. Therefore, in any case, the control according to the above is performed.

Further, in the above embodiment, the three-dimensional size of the packaged product X for each product code is stored in advance in the control section 9 ', and the memory is stored based on the code signal input by the operator's operation. Although the three-dimensional size of the packaged article X being read is read, for example, the packaged article X is placed on the weighing conveyor 71, and while the weight is measured by the weighing machine 72, the packaged article X is packaged. Each dimension of the product X is detected by the sensor, and the dimension signal is sent together with the weight signal to the controller 9
You may make it output to.

Next, a second embodiment of the present invention will be described. The same reference numerals are used for the same components.

As shown in FIGS. 8 and 9, in the weighing-in / carrying-out mechanism 2 of the packaging apparatus according to this embodiment, a contact bar 82 which is vertically driven by a solenoid 81 is provided with a weighing conveyor 7.
It is arranged above 1. The contact bar 82 does not contact the article to be packaged X which is placed on the conveyor 71 and moves in the flow direction B when driven upward, but does not contact the article to be packaged X when driven downward. It is adjusted so as to be in contact with each other, and is positioned slightly offset to one side in the width direction of the weighing conveyor 71. Then, the control unit 9 ′ displays the display unit 9 according to the set orientation of the packaged item X.
The contact bar 82 is driven via the solenoid 81 together with or instead of the display on a.

As a result, the contact bar 82 in which a part of the article to be packaged X that has moved along the flow direction B is driven downward
When it comes into contact with, the movement of the portion is hindered, while the other portions are dragged by the weighing conveyor 71, and the packaged product X is
Is changed by 90 degrees, and the article to be packaged X is conveyed onto the lift device 73 in this changed direction and pushed up to the upper packaging station 5. Therefore, if the contact bar 82 is driven downward when the orientation different from the predetermined orientation is set, the orientation of the article to be packaged X is automatically changed. The worker always has to throw in the article to be packaged X in the above-mentioned determined direction.

Instead of the contact bar 82 or the like, a roller member, a guide member or the like may be used as disclosed in Japanese Utility Model Publication No. 57-11941.

[0060]

As described above, according to the present invention, a packaging film capable of packaging a packaged item satisfying a predetermined condition based on the size of the packaged item identified by the identifying means. Since the size is calculated by the calculation means, the size of the packaged product and the required size of the packaging film corresponding to various packaging conditions are calculated.

Further, since the setting means sets the minimum feed amount of the film having the predetermined width capable of obtaining the packaging film having the size calculated by the calculating means, the packaging film having the above-mentioned necessary size is set to the film having the minimum predetermined width. The feed amount of the film that can be obtained by the consumption amount is set. In that case, the setting means sets the above-mentioned minimum feed amount on the basis of a predetermined judgment criterion having the orientation of the article to be packed with respect to the film with a predetermined width as a decision element, and therefore the setting of the minimum feed amount is the It is done considering the direction,
As a result, at the same time as the setting of the minimum feed amount of the film having the predetermined width, the orientation of the article to be packaged with respect to the film having the predetermined width is set.

Since the control means controls the drive amount of the feeding means so that the film of a predetermined width is fed by the minimum feed amount, the required size for packaging the article to be packaged while satisfying the predetermined packaging condition. Will be obtained with the minimum consumption amount of the film having the predetermined width.

Further, since the carrying-in of the article to be packaged is adjusted by the adjusting means so that the article to be packaged is carried into the packaging device in the set orientation, the article to be packaged is the obtained packaging film with high accuracy. It will be carried into the packaging device in the direction in which it is packaged.

The product to be packaged is packed in the orientation set above.
The loading direction of the packaged item is
Since it is displayed on the display means, the worker can
The article to be packaged is carried into the packaging device.

On the other hand, the calculating means uses the condition (1) that all the side edges of the packaging film are folded into the bottom side of the article to be packaged by a predetermined amount, and the condition (2) that the side edges are folded toward the bottom side. If the size of the packaging film that can package the item to be packaged is satisfied by satisfying that at least one of the opposite side edges overlaps each other by a predetermined amount, it is said that the item to be packaged is sealed. It is possible to calculate the required dimension of the packaging film that satisfies the packaging conditions.

Further, when the length of the longer side of the packaging film having the size calculated by the calculating means is equal to or less than the width of the film having the predetermined width, the setting means changes the orientation of the article to be packaged. If the longitudinal direction is set to be the width direction of the film having the predetermined width, and the length of the shorter side in the packaging film having the above-described dimension is set as the minimum feed amount of the film having the predetermined width, the above calculation is performed. When the longer side of the packaging film of the specified size corresponds to the longitudinal direction of the packaged product, the orientation of the packaged product with respect to the film of the predetermined width and the minimum feed amount of the film of the predetermined width can be set. .

As the adjusting means, the contact member is brought into contact with a part of the article to be packaged which is being carried into the packaging apparatus, so that the orientation of the article to be packaged is changed by 90 degrees. If the wrapping film is used, the orientation of the article to be packaged can be automatically changed to the orientation in which the wrapping film can be accurately wrapped.

[Brief description of drawings]

FIG. 1 is a front view of a packaging device according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line aa in FIG.

FIG. 3 is an enlarged sectional view taken along line bb in FIG.

FIG. 4 is an enlarged sectional view taken along line cc in FIG.

FIG. 5 is a block diagram showing a control system of the film supply device.

FIG. 6 is an explanatory diagram of control performed by a film supply control unit.

FIG. 7 is likewise an explanatory diagram of control.

FIG. 8 is a partial cross-sectional view of a packaging device according to a second embodiment of the present invention.

FIG. 9 is an explanatory diagram of the operation of the packaging device.

[Explanation of symbols]

1 packaging equipment 2 Weighing-in mechanism 4 Film feeding mechanism 5 packaging stations 6 Film transport mechanism 9 Control device 9'Film supply control unit 73 Lift device 82 Abutment bar F film F'film roll f Packaging film X Packaged item

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B65B 11/00-11/58 B65B 35/00-35/58

Claims (5)

(57) [Claims] 1. A packaging device for packaging a product to be packaged with a packaging film obtained by feeding a film having a predetermined width by a feeding means and cutting the film, and identifying the dimensions of the product. Means, and a calculating means for calculating the dimension of the packaging film capable of packaging the article to be packed satisfying a predetermined condition based on the dimension identified by the identifying means, and the calculating means Setting means for setting the minimum feed amount of the film having the predetermined width capable of obtaining a packaging film of a size according to a predetermined judgment criterion having the orientation of the article to be packed with respect to the film as a judgment factor, and the setting means. The control means for controlling the drive amount of the feeding means so that the film having the predetermined width is fed by the minimum feeding amount, and the article to be packed is carried into the packaging device in the direction set by the setting means as well. And a means for adjusting the carry-in of the article to be packaged as described above. 2. A feed means for feeding a film having a predetermined width.
The packaging film obtained by sending it out and cutting it
A packaging device for packaging items to be packaged in a
Identification means for identifying the dimensions of the equipment and the identification means
Based on the dimensions to be packed, the specified conditions are satisfied and the packaged
Calculate the dimensions of the packaging film that can wrap the product
Calculation means and the packaging file of the dimensions calculated by the calculation means.
Minimum feed of the film of the above specified width that can obtain Rum
Amount to determine the orientation of the packaged item with respect to the film
And a setting means for setting with a predetermined judgment standard
The film of the above specified width is fed by the minimum feed amount set by the stage.
Control to control the drive amount of the feeding means so that
Means to be packaged in the same direction as the setting means.
The direction in which the packaged item is loaded so that it can be loaded into the packaging device.
And a display means for displaying
Packaging equipment. 3. The calculation means uses the following conditions (1) and (2):
The packaging device according to claim 1 or 2 , wherein a dimension of a packaging film capable of packaging the article to be packaged is satisfied. (1) All side edges of the packaging film are folded by a predetermined amount on the bottom side of the article to be packaged. (2) At least one facing side edge portion of the side edge portions folded to the bottom surface side overlaps each other by a predetermined amount. 4. When the length of the longer side of the packaging film having the dimension calculated by the calculation means is equal to or less than the width of the film having a predetermined width, the setting means sets the orientation of the article to be packaged to the longitudinal direction. The direction is set to be the width direction of the film having a predetermined width, and the length of the shorter side in the packaging film having the calculated dimension is set as the minimum feed amount of the film having the predetermined width. The packaging device according to any one of 1 to 3 . 5. The adjusting means brings a contact member into contact with a part of the article to be packaged which is being carried into the packaging device,
The packaging apparatus according to claim 1, wherein the orientation of the article to be packaged is changed by 90 degrees.