JP6847802B2 - Position calculation system, bag-making possible number calculation system, position calculation method, bag-making possible number calculation method and packaging machine - Google Patents

Description

The present invention relates to a position calculation system, a bag-making possible number calculation system, a position calculation method, a bag-making possible number calculation method, and a packaging machine.

Conventionally, in a packaging machine that makes a bag while supplying an article to form a packaging body (for example, a pillow packaging body), when the article to be packaged is changed, its outer shape and packaging mode (width and type of packaging material). Depending on the size of the center seal, how much room is left for packaging, etc.), the bag making device may be replaced, or the frontage (width and height) of the bag making device or the packaging material may be added to the bag making device. The bag is made by adjusting the position of the roller to guide the bag.

Then, for example, as an example of a device in which the bag making device can be replaced, each of a predetermined item, packaging material, or bag making device (former) is stored in advance in the storage means in order to enable selection of an appropriate bag making device. There is known an apparatus for setting data and collating the data of a designated item specified by an input means and the data of a packaging material or a former mounted on a packaging machine (see, for example, Patent Document 1).

Further, in particular, in a packaging machine equipped with a bag making machine as described above (for example, a pillow packaging machine), the packaging route (distance from the supply of packaging material to individual packaging) in the packaging machine is generally defined. long. Therefore, if any abnormality (for example, printing error on the packaging material, sealing error of the packaging material, etc.) occurs in the packaging material or the packaging body during the packaging process (in the middle of the packaging route), the abnormality is found. It is necessary to predict the timing when the generated part reaches the discharge position (discharge position) downstream and remove it appropriately.

More specifically, the number of normal packages (normally (as normal)) goes back to the part where the abnormality occurred upstream from the preceding (normal) package that passed the discharge position when the abnormality was found. Grasp the number of packages to be discharged (the number of packages that can be produced, hereinafter referred to as "the number that can be made into bags"), and remove the part where an abnormality occurs at the discharge position after these have passed the predetermined discharge position. Processing is being performed.

Then, not only the discharge of the portion where the abnormality has occurred as described above, but also how many packages exist between a predetermined position in the middle of the packaging route in the packaging machine and the discharge position ( As a means for grasping the number of bags that can be made), the length of the packaging material from the predetermined position to the discharge position is determined by the cut pitch of the package (the transport width at both ends of the tubular packaging material containing the article in the transport direction). A method of dividing by the distance between the cut positions when sealing and cutting in the direction is used (see, for example, Patent Document 2).

Japanese Patent No. 3393553 Japanese Unexamined Patent Publication No. 2009-161228

However, it is found in packaging machines (packaging machines equipped with so-called adjustable bag making machines) that are configured so that the frontage (width and height) of the bag making machine and the position of the rollers that guide the packaging material to the bag making machine can be adjusted. In the case of a new article, a new packaging material (in the case of changing the width of the packaging material, or changing the material, etc.), or both, the position of the frontage of the bag making device and the position of the roller is adjusted to determine. There is a need. The person in charge of adjustment predicts the position each time so that it is in an appropriate state according to the outer shape of the article to be packaged and the desired packaging mode (especially so that the position of the roller is in an appropriate position). The adjustment work requires skill because the work of setting and adjusting again if it is not appropriate is repeated.

Further, since such adjustment work largely depends on the experience of the person in charge, it is particularly complicated and inefficient for a person who is unfamiliar with the work, and there is also a problem in variation in work depending on the person in charge.

The technique described in Patent Document 1 described above is configured such that data of a predetermined item, packaging material or former is set in advance in a storage means, and appropriate packaging can be performed when the data match. , Not applicable to items, packaging materials or formers for which registered data does not exist (eg new).

Further, in the past, it was necessary for the person in charge to predict the number of bags that can be made from the part where the abnormality occurred in the processing when the abnormality was detected in the packaging, depending on the article. Specifically, the length of the packaging material from the abnormality detecting means (for example, a sensor) to the discharge position as the package (the position where the part where the abnormality is found should be discharged) is grasped, and the length is concerned. Is divided by the cut pitch of the package to predict the number of bags that can be made and the number of bags that can be made is input (set) to the packaging machine. As a result, when an abnormality is detected, the packaging machine is configured to discharge a set number of normal packages that can be made into bags, and then discharge and remove the abnormal portion.

However, in this case (especially for new items and packaging materials that have no track record), is the predicted number of bags that can be made by performing preliminary packaging before the start of actual processing correct (predicted bag making is possible)? It is necessary to confirm whether the abnormal part reaches the discharge position properly if the number is discharged), and there are problems that the packaging film YA1 is wasted and the work efficiency is poor.

In particular, unlike the case where the distance from the predetermined position to the discharge position is constant as in Patent Document 2, in the packaging machine equipped with the adjustment type bag making device, the position of the roller is changed due to the change of the article to be packaged. If adjusted, the distance from the position of the anomaly detecting means to the discharge position will also be displaced. Further, since the abnormality detecting means are generally provided in a plurality of steps on the packaging route, the distances from the position of each abnormality detecting means to the discharging position are different, and they are displaced according to the article. Therefore, it is more difficult and complicated to predict the number of bags that can be made, which is a major factor that makes it impossible to improve work efficiency.

The present invention has been made in view of the above problems, and in a packaging machine equipped with an adjustable bag making device, it is easy to adjust the position of a roller that guides a packaging material to the bag making device and to predict the number of bags that can be made. It is an object of the present invention to provide a position calculation system, a bag-making possible number calculation system, a position calculation method, a bag-making possible number calculation method, and a packaging machine that can be efficiently performed.

In the present invention, the first roller on which the strip-shaped packaging material unwound from the original roll is hung and the packaging material are hung downstream from the first roller and can move relative to the first roller. The width of the second roller, the bottom surface portion, and the position of the guide means provided along the side surface portion can be changed, and both end edges of the packaging material supplied via the second roller are overlapped with each other. In a packaging machine having a tubular bag making device and supplying and packaging an article to the tubular packaging material, the second roller with respect to the first roller according to the shape of the article. A position calculation system used for adjusting the position of the bag, which is based on an input means for receiving input of position information based on a fluctuating part of the bag making device, the position information, and preset information. The position calculating means for calculating the index position of the two rollers and the output means for outputting the calculated index position are provided, and the preset information indicates the angle of entry of the packaging material into the bag making machine. It is a position calculation system characterized in that it is information including at least, and the index position is the position of the second roller that can be supplied to the bag making machine while applying an appropriate tension to the packaging material.

The present invention is also a bag-making possible number calculation system for a packaging machine, which is a position calculation system and a state detection means for detecting the state of the packaging film or packaging at at least one location in the middle of the movement path of the packaging film. And, based on the position information, the calculation result of the position calculation means, and the cut pitch when the article is cut by the sealing means, until the portion determined to be abnormal by the state detecting means reaches the discharge position. The bag-making possible number calculation system is provided with a package number calculation means for calculating the normal number of packages discharged between the two.

The present invention also has a first roller over which a strip-shaped packaging material unwound from the original roll is hung, and the packaging material is hung downstream from the first roller and is movable relative to the first roller. The width of the bottom surface portion and the position of the guide means provided along the side surface portion can be varied, and both end edges of the packaging material supplied via the second roller are overlapped with each other. In a packaging machine having a bag-making machine having a tubular shape and supplying and packaging an article to the tubular packaging material, the second roller with respect to the first roller according to the shape of the article. A position calculation method used when adjusting the position of a roller, which acquires position information based on a fluctuating part of the bag making device, and obtains the position information and the packaging material in the bag making device set in advance. A position calculation method characterized in that the index position of the second roller is calculated so that the packaging material can be supplied to the bag making machine while applying an appropriate tension to the packaging material based on information including at least the approach angle. Is.

The present invention is also a method for calculating the number of bags that can be made in a packaging machine, in which the position of the second roller is acquired by the above-mentioned position calculation method and is provided at at least one place in the middle of the movement path of the packaging film. The state of the packaging film or packaging is detected by the detecting means, and an abnormality is made by the state detecting means based on the position information, the calculation result of the position calculating means, and the cut pitch when the article is cut by the sealing means. This is a method for calculating the number of bags that can be made, which is characterized in that the number of normal packages to be discharged before the portion determined to reach the discharge position is calculated.

The present invention is also a packaging machine comprising the above position calculation system.

The present invention is also a packaging machine including the above-mentioned bag-making possible number calculation system.

The present invention is also a packaging machine capable of calculating the index position by the above position calculation method.

The present invention is also a packaging machine capable of calculating a normal number of packages by the above-mentioned method for calculating the number of bags that can be made.

According to the present invention, in a packaging machine equipped with an adjust-type bag making device, it is possible to easily and efficiently adjust the position of a roller that guides a packaging material to the bag making device and predict the number of bags that can be made. It will be possible.

It is a front view which shows the outline of the packaging machine which concerns on this invention. It is a perspective view which shows the package body which concerns on this invention. It is a figure which shows by extracting the vicinity of the bag making machine which concerns on this invention, (A) is an external front view, (B) is a top view, (C) is a side view. It is a block diagram which shows an example of the structure of the position calculation system which concerns on this invention. It is a schematic diagram explaining various position information used in the position calculation system of this invention. It is a schematic diagram explaining various position information used in the position calculation system of this invention. (A) is a table showing an example of variable position information of the present invention, and (B) is a table showing an example of unique position information of the present invention. It is a block diagram which shows an example of the structure of the bag-making possible number calculation system which concerns on this invention. It is a table which shows each information used in the bag-making possible number calculation system of this invention, and an example of the calculation formula. It is a figure which shows the other embodiment of this invention. It is a schematic diagram which shows an example of the distance measuring apparatus which concerns on this invention.

Hereinafter, the packaging machine 1 according to the present invention will be described in detail with reference to the drawings. First, the configuration of the packaging machine 1 will be described with reference to FIGS. 1 to 3. FIG. 1 is a front view showing an outline of the entire packaging machine 1, FIG. 2 is an external perspective view showing a package packaged by the packaging machine 1, and FIG. 3 is a main part of the present embodiment. It is a schematic diagram which shows by extracting. In this drawing and each of the following drawings, some configurations will be omitted as appropriate to simplify the drawings. Then, in this drawing and each subsequent drawing, the size, shape, thickness, etc. of the member are appropriately exaggerated and expressed.

In the packaging machine 1 shown in FIG. 1, the packaging material YA1 such as a film is continuously supplied and the bag is made into a tubular shape in accordance with the sequential supply of the article XA1, and the packaging machine 1 is manufactured at predetermined pitch (cut pitch CP). It is a so-called horizontal bag-making filling machine that seals and cuts in the width direction of the packaging material YA1.

The packaging machine 1 uses the continuously supplied packaging material YA1 such as a resin film (hereinafter referred to as “packaging film YA1”) to convey the articles XA1 sequentially supplied from the previous process from upstream to downstream. Wrap while wrapping. In FIG. 1, the side closer to the original roll YB1 is the upstream side, and the far side is the downstream side. The article XA1 is, for example, food or daily necessities, but the packaging machine of the present invention can be used for packaging various other articles XA1.

<Packaging machine>
With reference to FIG. 1, the packaging machine 1 includes an article supply device 2, a film supply device 3, a packaging machine main body 4, a control unit (not shown), and the like. As a definition of various directions in the packaging machine main body 4, the first direction which is the longitudinal direction (direction in which the center seal extends) of the packaging film YA1 is defined as the transport direction T, and the width direction of the packaging film YA1 extending in a strip shape (horizontal seal (horizontal seal (horizontal seal)) The second direction (the direction in which the top seal and the end seal) extend) is the transport width direction W, and the third direction is the height direction of the packaging film YA1 (the direction perpendicular to the transport direction T and the transport width direction W). The direction is the transport height direction H.

Each part of these packaging machines 1 is collectively controlled by a control unit. The control unit is composed of a CPU, RAM, ROM, and the like, and executes various controls. The CPU is a so-called central processing unit, and various programs are executed to realize various functions. The RAM is used as a work area of the CPU. The ROM stores the basic OS and programs executed by the CPU.

The article supply device 2 conveys the article XA1 at equal intervals and sequentially conveys the article XA1 to the downstream packaging machine main body 4. The article supply device 2 is composed of, for example, a finger conveyor. Specifically, the article supply device 2 is driven by a transport surface having a slit (reference numeral omitted), a side guide (not shown) that guides the article XA1 on the transport surface from the side, and a driving sprocket 5. Sprocket (not shown), an annular chain 6 that runs over these sprockets, a plurality of fingers 7 attached to the chain 6 at equal intervals, and a servomotor that serves as a power source (not shown). Omitted) and so on.

The drive sprocket 5 is rotated by the drive of the servo motor. The driven sprocket rotates in conjunction with the driving sprocket as the chain 6 travels. The chain 6 travels so as to circulate due to the rotation of the driving sprocket. The plurality of fingers 7 project from the lower side to the upper side of the transport surface through the slits. These plurality of fingers 7 travel on the transport surface by traveling the chain 6. As a result, the plurality of fingers 7 push the article XA1 on the transport surface and send it out to the packaging machine main body 4.

The film supply device 3 continuously supplies the packaging film YA1 to the downstream packaging machine main body 4. The film supply device 3 includes a raw shaft 8, a servomotor (not shown), a guide roller 9, a first roller 101, a second roller 102, and the like. The raw fabric shaft 8 rotatably holds the raw fabric roll YB1. The original fabric shaft 8 is rotated by being powered by the servomotor, and rotates the original fabric roll YB1 held by the servomotor. As a result, the packaging film YA1 is unwound (stretched) from the original roll YB1. The guide roller 9, the first roller 101, and the second roller 102 appropriately change the transport direction of the original roll YB1 and guide the roll YB1 to the packaging machine main body 4. In the figure, the configuration from the original roll YB1 to the first roller 101 is shown in a simplified manner, but the details will be described later (see FIG. 5).

The first roller 101 and the second roller 102 guide the packaging film YA1 straddled to both of them to the supply port 14a of the bag making device 14 provided downstream thereof. The first roller is attached to one end of an arm (not shown), and the second roller 102 is attached so as to be movable in the longitudinal direction of the arm 103.

As a method of feeding out the packaging film YA1 from the raw fabric roll YB1, instead of adopting the raw fabric driving method as described above, a feed roller is separately provided and the feed roller is moved to pull out the packaging film YA1. A driven method may be adopted. Further, both the original reverse drive type and the feed roller drive type may be adopted.

The packaging machine main body 4 wraps the article XA1 supplied from the article supply device 2 with the packaging film YA1 supplied from the film supply device 3. Specifically, the packaging machine main body 4 includes a bag making device 14, a pinch roller 15, a center sealing device 16, a first transport device 17, an upper holding device 18, and a top sealing device (end sealing device) 30. And a second transfer device 20 and the like.

The bag making device 14 makes a tubular bag of the packaging film YA1 supplied from the film supply device 3 so that both end edges in the width direction (conveying width direction W) overlap each other. Further, the bag making device 14 supplies the article XA1 supplied from the article supplying device 2 to the packaging film YA1 which is made into a tubular bag. As a result, the article XA1 is wrapped in the packaging film YA1 which is made into a tubular bag. That is, the bag making device 14 functions as a bag making device that bends the packaging film YA1 in the width direction to form a tubular shape.

The pinch rollers 15 sandwich and polymerize both end edges of the packaging film YA1 that overlap each other (the region to be formed of the center seal portion CE1 (see FIG. 2)), and impart a conveying force to the both end edges.

The center seal device 16 includes a pair of bar sealers 16a and a press roller 16b. The center seal device 16 heats the packaging film YA1 polymerized by the pair of bar sealers 16a with both end edges sandwiched between them. Then, the center seal device 16 presses both end edges of the heated packaging film YA1 with the press rollers 16b to center seal, and forms the center seal portion CE1 (see FIG. 2). That is, the center seal device 16 applies the center seal to the wrapping film YA1 formed in a tubular shape downstream of the bag making device 14. A rotary center seal device for heating by sandwiching the center seal portion between a pair of rollers or a plurality of rollers may be used.

The first transport device 17 transports the center-sealed tubular packaging film YA1 together with the article XA1 wrapped in the packaging film YA1 on the transport surface (reference numeral omitted) toward the top seal device 30. .. The first transport device 17 expands and contracts the transport surface in the transport direction in accordance with the box motion of the top seal device 30.

The upper holding device 18 is arranged above the first transport device 17, and holds the article XA1 transported to the first transport device 17 together with the packaging film YA1 from above. As a result, the article XA1 is conveyed while maintaining the horizontal state.

The top sealing device (top sealing means, horizontal sealing means, end sealing means) 30 crosses the width direction (conveying width direction W, packaging film YA1) of the packaging film YA1 for each cut pitch CP according to the length of the article XA1. Top seal (end seal, horizontal seal) and cut in the direction of the top seal. As a result, the top seal portion TO1 is formed, and the package (pillow package) ZA1 is manufactured. That is, the top sealing device 30 seals and cuts the center-sealed packaging film YA1 at predetermined intervals (cut pitch CP) in the transport width direction W.

As an example, the top seal device 30 is a so-called box motion type having a pair of upper and lower top sealers 30a and 30b, and a pair of top sealers 30a and 30b arranged vertically with a tubular packaging film YA1 sandwiched therein. The film moves along a predetermined trajectory while maintaining the sealing surfaces facing each other, and top seals and cuts are performed in the width direction of the film at each cut pitch CP according to the length of the article. The film portion (top seal portion TO1) to be sealed and cut by the top seal device 30 is a predetermined position between the front and rear articles XA1. In addition to the box motion, the top seal device 30 may be a rotary type or a linear reciprocating type top seal device.

Further, before (or at the same time) the top seal is applied to the tubular packaging film YA1, the top seal device 30 is designated on both sides in the traveling direction in the vicinity of the portion of the tubular packaging film YA1 to be top-sealed. The folding position is pushed inward with a gusset claw (not shown) and folded to form a folding portion. A discharge device 219 is arranged downstream of the top seal device 30. The discharge device 219 discharges the abnormal portion (defective package) from the system.

The second transfer device 20 is provided downstream of the top seal device 30. The second transfer device 20 is a belt conveyor in which the package ZA1 finished by the top seal device 30 is placed on the transfer surface 20a and conveyed for the next process. Then, the second transport device 20 expands and contracts the length of the transport surface 20a in the transport direction in accordance with the box motion of the top seal device 30.

The packaging body (pillow packaging body) ZA1 of the present embodiment will be described with reference to FIG. The package ZA1 in the figure is in a state immediately after being sealed and cut from the top seal portion TO1 by the top seal device 30 and transferred to the second transfer device 20.

As shown in the figure, in the center seal portion CE1 of the packaging body ZA1, the packaging film YA1 has a tubular shape at both end edges along the first direction (the same direction as the transport direction T) of the strip-shaped packaging film YA1. It is a part provided by polymerizing and heat-sealing as described above.

The top seal portion TO1 is a portion provided by heat-sealing the openings at both ends along the second direction (direction intersecting (orthogonal) in the transport direction) of the tubular packaging film YA1.

Although the package ZA1 has an example of a substantially rectangular parallelepiped (substantially cubic) shape here, it is not limited to this shape and may be, for example, a substantially cylindrical shape.

<Bag making machine>
FIG. 3 is a diagram showing the vicinity of the bag making device 14 of the present embodiment extracted. FIG. 3A is an external front view of the first roller 101, the second roller 102, and the bag making device 14, FIG. 3B is a top view of the bag making device 14, and FIG. 3C is a bag making device. It is a side view of the vessel 14.

As shown in FIG. 3A, the strip-shaped wrapping film YA1 unwound from the original roll YB1 (not shown here) is hung on the first roller 101 and the second roller 102 provided downstream thereof. Is done.

The first roller 101 is rotatably attached to one end of the arm 103 about the rotation axis, and the second roller 102 is rotatably attached to the other end of the arm 103 about the rotation axis. Further, the rotation axis of the second roller 102 is configured to be able to move relative to the first roller 101 (movement approaching or separating) along the longitudinal direction of the arm 103.

The tip of the arm 103 on the second roller 102 side (the left end in the figure (B)) is determined clockwise or counterclockwise in the figure (B) with the central axis 101s of the first roller 101 as the center. It may be configured to rotate (swing) freely within a range of angles.

The packaging film YA1 supplied to the bag making device 14 is continuously supplied so as to join the article XA1 from diagonally above, and is bent at the tip of the bag making device 14 in the article conveying direction T and at the same time into a tubular shape. Bags are made.

As shown in FIGS. 3 (B) and 3 (C), the bag making device 14 of the present embodiment includes a bottom surface portion 141, a pair of side surface portions 142, a top surface portion 143, and the like, and the bottom surface portion 141. The width (length of the transport width direction W) W0 and the height H0 of the side surface portion 142 in the transport height direction H are adjustable.

Specifically, the bag making device 14 is formed by bending or bending one or a plurality of metal plates such as stainless steel, or by welding a plurality of metal plates. The upstream side of the bag making device 14 constitutes a supply port 14a to which the packaging film YA1 is supplied and receives the packaging film YA1 and also receives the article XA1 supplied to the packaging film YA1. In the present embodiment, as an example, a bag making device 14 formed so that the cross-sectional shape in the transport width direction W is substantially rectangular will be described.

The bottom surface portion 141 is composed of a first bottom surface portion 141A and a second bottom surface portion 141B. The first bottom surface portion 141A is a flat plate member provided with a slit 141S along the transport direction T at the center of the transport width direction W, and the polymerized end portion of the packaging film YA1 is pulled out downward through the slit 141S. Further, the second bottom surface portion 141B is a pair of plate members arranged so as to partially overlap or separate from each of the first bottom surface portions 141A divided by the slit 141S, and are fixed to the machine frame (not shown). It is configured to be slidable in the transport width direction W with respect to the first bottom surface portion 141A.

For example, a flat plate-shaped connecting member (not shown) may be provided between the first bottom surface portion 141A and the second bottom surface portion 141B. The connecting member is configured so that the second bottom surface portion 141B can be slidably moved and always overlaps the first bottom surface portion 141A and the second bottom surface portion 141B. As a result, even when the second bottom surface portion 141B is separated and a gap is generated between the second bottom surface portion 141B and the first bottom surface portion 141A, the gap can be covered by the connecting member.

Further, each of the pair of side surface portions 142 is composed of a first side surface portion 142A and a second side surface portion 142B, respectively. Each of the first side surface portions 142A is integrally fixed to a pair of second bottom surface portions 141B, and by sliding the second bottom surface portions 141B so as to be close to or separated from each other, the opposing side surface portions 142 are close to each other. Or separate. As a result, the width W0 (length in the transport width direction W) of the bag making device 14 can be adjusted.

The second side surface portion 142B functions as a guide portion that guides the supplied packaging film YA1 along the first side surface portion 142A. For example, in the front view shown in FIG. The plate member has a trapezoidal shape in which the short side on the upstream side (left side in the drawing) is inclined so that the length along the transport direction T becomes longer from the bottom surface portion 141 toward the top surface portion 143. That is, as for the short side on the upstream side of the second side surface portion 142B, the top surface portion 143 side protrudes in the upstream side direction from the bottom surface portion 141 side. Hereinafter, this protruding tip portion will be referred to as an upstream tip portion 142T. Further, a plate member projects from the upper long side portion of the second side surface portion 142B toward the center of the bag making device 14 (center of the transport width direction W) so as to face the bottom surface portion 141, and the top surface portion 143 is provided. Has been done.

The second side surface portion (guide portion) 142B can slide with respect to the side surface portion 142 in the transport direction T and the transport height direction H (higher as it moves upstream and lower as it moves downstream). (Slide movement is possible in diagonal directions).

When the second side surface portion 142B is moved to the upstream side in the transport direction T, the height H0 of the upstream side tip portion 142T in the transport height direction H becomes higher, and the second side surface portion 142B is moved to the downstream side in the transport direction T. Then, the height H0 of the upstream tip portion 142T in the transport height direction H becomes low.

As shown in FIG. 3C, in the present embodiment, the shape of the frontage of the supply port 14a of the bag making device 14 is partitioned by the bottom surface portion 141, the side surface portion 142, and the top surface portion 143 (and its extension line) ( Omitted) It has a rectangular shape, the width of the frontage is equivalent to the width W0 of the bottom surface portion 141 (between the side surface portions 142), and the height of the frontage is the upstream side tip portion 142T of the second side surface portion (guide portion) 142B. It is equivalent to the height H0 from the bottom surface portion 141 of.

The bag making device 14 receives the packaging film YA1 continuously supplied so as to join the article XA1 from diagonally above at the supply port 14a, and is composed of a bottom surface portion 141 (second bottom surface portion 141B) and a side surface portion 142. The corner portion is bent along the transport direction so as to wrap the article XA1.

Then, in the bag making device 14, both end edges ED1 and ED2 in the width direction (conveyance width direction W) of the packaging film YA1 are overlapped with each other and led out downward from the slit 141S of the bottom surface portion 141 (first bottom surface portion 141A) to form a cylinder. Make a bag.

As described above, the bag making device 14 of the present embodiment has the outer shape of the article XA1 and the packaging mode of the article XA1 (for example, the width and material of the packaging film YA1, the degree of adhesion to the article XA1, and the polymerization of the center seal portion CE). The shape of the frontage of the supply port 14a (width W0 and height H0 of the frontage) can be adjusted according to the width and the like.

Further, the second roller 102 that guides the packaging film YA1 to the bag making device 14 is also relatively movable with respect to the first roller 101 (horizontal movement and rotation (swing) about the rotation axis of the first roller 101. ) Possible). Therefore, by appropriately adjusting the position of the second roller 102 in response to the change in the frontage shape of the bag making device 14, the bag making device 14 is accurately tensioned while giving an appropriate tension to the packaging film YA1. The packaging film YA1 can be reliably supplied.

On the other hand, the adjustment of the frontage shape of the bag making device 14 and the position adjustment of the second roller 102, which change depending on the article XA1 and the packaging mode, have been often set by the experience of the person in charge of the work in the past. At this time, the frontage shape of the bag making device 14 is relatively easy to adjust according to the shape of the article XA1, but the position adjustment of the second roller 102 is complicated.

Further, if there is already a track record of packaging, the past set value can be used, but when packaging a new article XA1, it is necessary to adjust the position (set the position) again.

In particular, in the case of a person in charge who is unfamiliar with the work, these position adjustments are more complicated and difficult, and there is a problem that the work varies widely depending on the person in charge and the work efficiency is poor.

Therefore, in the present embodiment, in particular, the position adjustment index (reference) is based on various position information of the bag making device 14 and the predetermined parts around the bag making device 14 so that the position adjustment of the second roller 102 can be easily and easily performed. It was decided to calculate the data (set value) to be used and output it in a format that can be used by the person in charge. This will be described below.

<Position calculation system>
The packaging machine 1 of the present embodiment calculates and outputs the position of the second roller 102 as an index (reference) when adjusting the position of the second roller 102 with respect to the first roller 101 according to the shape of the article XA1. The position calculation system 150 is provided. In the following description, the position of the second roller 102, which is an index (reference) calculated by the position calculation system 150, is referred to as an “index position”.

The position calculation system 150 of the present embodiment will be described with reference to FIGS. 4 to 6. FIG. 4 is a block diagram of the position calculation system 150, and FIGS. 5 and 6 are schematic views showing various position information used in the position calculation system 150.

With reference to FIG. 4, the position calculation system 150 of the present embodiment is provided in the control unit of the packaging machine 1, and includes an input means 151, a position calculation means 152, an output means 153, a control means 154, and a storage means. It has 155 and the like.

The input means 151 is a means for receiving input of information such as numerical values from the outside (for example, position information based on a fluctuating part of the bag making device 14, various position information including other position information, etc.), and is, for example, a work. It is configured to include operating means (operation units) such as a touch panel, keyboard, buttons, and switches that can be operated by a person.

The position calculation means 152 is an index of the second roller 102 for adjusting the position of the second roller 102 based on various position information input from the input means 151, various position information stored in the storage means 155, and the like. Calculate the position (data).

Here, although the details will be described later, the "position information based on the fluctuating part of the bag making device 14 (hereinafter, simply referred to as" fluctuating position information ")" is the position information that fluctuates depending on the outer shape and packaging mode of the article XA1. For example, it is information on the frontage shape of the supply side of the bag making device 14. Alternatively, the "variable position information" is the width W0 of the bottom surface portion 141 of the bag making device 14 and the height H0 of the upstream side tip portion 142T. Further, various position information other than the "variable position information" input from the input means 151 or stored in the storage means 155 is set (registered) as a fixed value unique to the packaging machine 1, that is, for each packaging machine 1. It is information including a plurality of position information (hereinafter, referred to as "unique position information").

The control means 154 is configured by a CPU or the like, and can store and read various control parameters in the storage means 155 composed of a memory (RAM, ROM) or the like.

The control means 154 is connected to the input means 151 and the output means 153, and is used for information (variable position information, unique position information, etc.) input by the operator via the input means (operation unit) 151 and the storage means 155. The position calculation means 152 is made to perform an operation based on the stored unique position information and the like, and the output means 153 is made to output the calculation result. As described above, the control means 154 is not limited to this, and controls each part of the packaging machine 1 in an integrated manner to realize various functions.

The output means 153 is a means for outputting the calculation result of the position calculation means 152, that is, the index position (data) of the second roller 102 to the outside, and includes, for example, a display means (display unit) that can be visually recognized by the operator. Consists of. Examples of the display means include a liquid crystal display device (Liquid Crystal Display), a 7-segment display device, an organic EL (ElectroLuminence) display device, a dot matrix display device, and the like. In addition to the display means, a voice output means (speaker or the like) capable of voice guidance may be provided.

<Location information>
Next, the position information used in the position calculation system 150 of the present embodiment will be described with reference to FIGS. 5 to 7. FIG. 5 is a front schematic view for explaining the position information of each part of the packaging machine 1, FIG. 6 is a front schematic view showing the vicinity of the bag making device 14 in FIG. 5, and FIG. 7 (A). ) Is a table showing an example of “variable position information”, and FIG. 7B is a table showing an example of “unique position information”.

First, with reference to FIGS. 5 and 6, the position information used in the position calculation system 150 of the present embodiment and each part serving as a reference thereof will be described. 6 is an enlarged view of the portion marked with a broken line in FIG. 5, in which FIG. 6A is a front view and FIG. 6B is a top view.

As shown in FIG. 5, the packaging film YA1 unwound (stretched) from the original roll YB1 is hung on the guide rollers 9a and 9b, and the thermal printing roller 201 of the thermal printing device 215 located downstream thereof. Is hung on the surface and the predetermined printing is performed. Then, it is hung on the guide rollers 9c to 9e further downstream and transported downstream, and the print inspection is performed by the print inspection camera 203 arranged between the guide rollers 9c to 9e (in this example, between the guide rollers 9d and 9e). Will be done. Further, the packaging film YA1 is drawn into the labeler 205 downstream thereof, and a predetermined label is attached. The packaging film YA1 that has passed through the labeler 205 is hung on the first roller 101 via the guide rollers 9f to 9h. Further, the presence or absence of a seam is inspected by a seam sensor 207 arranged between the labeler 205 and the first roller 101 (in this example, between the guide rollers 9g and 9h).

With reference to FIGS. 5 (dashed line circled portion) and FIG. 6, the packaging film YA1 is hung on the second roller 102 downstream of the first roller 101 and supplied to the bag making device 14 located diagonally below the first roller 101. Will be done. The upper film of the packaging film YA1 is bent substantially horizontally along the transport path at the upstream tip portion 142T, and the lower film of the packaging film YA1 is bent at the bending position P1 located on the upstream side of the bag making device 14. It can be folded almost horizontally along. Then, both sides of the transport width direction W are converged by the convergence point P2 located on the downstream side of the bag making device 14, and both end edges ED1 and ED2 are polymerized to form a tubular bag (FIG. 6B).

After that, as shown in FIG. 5, the wrapping film YA1 has both end edges ED1 and ED2 center-sealed by a center seal device 16 (see FIG. 1) (see FIG. 1), which is not shown here, and further downstream by a top seal device 30 to form a top seal. A cut is made. A discharge device 219 is arranged downstream of the top seal device 30.

The discharge device 219 discharges the abnormal portion (defective package) from the system. The discharge device 219 pushes and discharges, for example, a bar (guide) that swings in the transport path and is arranged so as to be able to move forward and backward, or a portion where an abnormality occurs on the side belt conveyor. In addition, air may be blown onto the part where the abnormality has occurred (defective package) to discharge the air from the system. Furthermore, the belt may be expanded and contracted in the transport direction, and the defective package may be dropped to the lower side of the transport path and discharged.

In the present embodiment, the position (center position) of the downstream roller 209 of the second transport device 20 arranged immediately before the discharge device 219 is set as the discharge position POUT. At the discharge position POUT, the normal package YA1 is sealed and cut from the top seal portion TO1 to become individual packages YA1, and is continuously transferred to the downstream process. If an abnormality is found in the packaging film YA1 during packaging, the portion is discharged to the outside of the packaging machine 1 (out-of-system discharge) at the discharge position POUT.

With reference to FIGS. 6 and 7B, the “fixed position information” of the present embodiment is the position information unique to the packaging machine 1 in the positional relationship between the first roller 101, the second roller 102, and the bag making device 14. (Fixed position information whose value does not fluctuate), for example, fixed position information C1 to C3 and α1 to α3.

Specifically, referring to FIG. 6A, the fixed position information C1 is obtained from the bottom surface portion 141 of the bag making device 14 to the center point of the rotation axis of the first roller 101 (rotation (swing) of the arm 103). It is a distance along the vertical direction to P101.

The fixed position information C2 is the radius of the second roller 102.

The fixed position information C3 is a mounting position of the first roller 101 in the horizontal direction (conveying direction T). Specifically, it is the distance from the convergence point P2 of the bag making device 14 to the center P101 of the rotation axis of the first roller 101.

With reference to FIG. 6B, the fixed position information α1 is the opening angle of the packaging film YA1 at the convergence point P2 when the bag making device 14 is viewed from above, and is manufactured along the transport direction T passing through the convergence point P2. It is an angle α1 formed by the center line of the bag device 14 and the packaging film YA1 that is inclined in the top view from the convergence point P2 toward the side surface portion 142.

The fixed position information α2 is a bending angle of the packaging film YA1 at the bending position P1, and is a packaging film that is inclined toward the bottom surface portion 141 of the bag making device 14 and the upstream tip portion 142T of the bag making device 14 from the bending position P1. The angle α2 formed with YA1 is, for example, 20 ° to 40 °.

The fixed position information α3 is the inclination angle of the second roller 102 from the vertical line passing through the upstream tip portion 142T of the bag making device 14, with respect to the bottom surface portion 141 of the bag making device 14 passing through the upstream tip portion 142T. It is an angle α3 formed by a vertical line (vertical line) and a line connecting the point P4 farthest from the first roller 101 on the circumference of the second roller 102 and the upstream tip portion 142T, for example, 5 ° to 15 ° C. °.

As described above, in the present embodiment, the width W0 of the bag making device 14, the height H0 of the upstream tip portion 142T, and the position of the second roller 102 can be adjusted, but the above-mentioned fixed position can be adjusted. The position is adjusted while maintaining the values of the information C1 to C3 and α1 to α3.

On the other hand, the "variable position information" of the present embodiment is position information that varies depending on the outer shape and packaging mode of the article XA1, for example, information on the frontage shape of the supply side of the bag making device 14 or the bag making device 14. The width W0 of the bottom surface portion 141 and the height H0 of the upstream side tip portion 142T. Alternatively, the "variable position information" is the distance from the convergence point P2 of the packaging film YA1 in the bag making device 14 to the position where the bag making device 14 is bent from the bottom surface portion 141 toward the upstream tip portion 142T (bending position P1). The information may include F1, or the “variable position information” may be information including a horizontal distance F2 from the bending position P1 to the upstream tip portion 142T (see FIG. 6).

Specifically, the "variable position information" of the present embodiment is, for example, the first variable position information F1 to the fifth variable position information F5 shown in FIGS. 6 and 7 (A).

The first variable position information F1 is a horizontal distance from the convergence point P2 of the bag making device 14 to the bending position P1, and is a value calculated by the following (Equation 1).

F1 = W0 / 2 / tan (α1) (Equation 1)

The second variable position information F2 is the distance (upstream from the bending position P1) in the horizontal direction (direction parallel to the transport direction T) from the bending position P1 of the bag making device 14 to the upstream tip portion 142T of the bag making device 14. The distance from the vertical line drawn to the extension line of the bottom surface portion 141 through the side tip portion 142T to the point P5 where the extension line intersects), which is a value calculated by the following (Equation 2).

F2 = H0 / tan (α2) (Equation 2)

The third variable position information F3 is the distance from the upstream tip portion 142T of the bag making device 14 to the point P4 farthest from the first roller 101 on the circumference of the second roller 102, and is as follows (Equation 3). It is a value calculated by.

F3 = (C1-H0) / cos (α3) (Equation 3)

The fourth variable position information F4 is in the horizontal direction (direction parallel to the transport direction T) from the upstream tip portion 142T (point P5) of the bag making device 14 to the center (center of the rotation axis) P102 of the second roller 102. It is a value calculated by the following (Equation 4).

F4 = (C1-H0) × tan (α3) -C2 (Equation 4)

The fifth variable position information F5 is a distance in the horizontal direction (direction parallel to the transport direction T) from the upstream tip portion 142T (point P5) of the bag making device 14 to the center P101 of the first roller 101, and is as follows. It is a value calculated by (Equation 5).

F5 = F1 + F2-C3 (Equation 5)

As described above, the "variable position information" input to the position calculation means 152 is the information necessary for calculating the fourth variable position information F4 and the fifth variable position information F5, or the fourth variable position information F4. It can be said that this is the fifth variable position information F5.

The position calculation means 152 of the position calculation system 150 maintains the values of the fixed position information C1 to C3 and α1 to α3, and has a width W0 of the bag making device 14 and an upstream tip portion depending on the outer shape and packaging mode of the article XA1. When adjusting the height H0 of 142T and the position of the second roller 102, the fourth variation is based on the fixed position information C1 to C3, α1 to α3 and the first variation position information F1 to the fifth variation position information F5. The total value F6 of the position information F4 and the fifth variable position information F5 is calculated, and this is output as an index position of the second roller 102. The total value F6 in this case is a distance along the horizontal direction from the convergence point P2 of the bag making device 14.

The total value F6 of the fourth variable position information F4 and the fifth variable position information F5 is the distance F6 between the center P101 of the first roller 101 and the center P102 of the second roller 102, and the operator can output the total value. The position of the second roller 102 is adjusted with F6 as the index position of the second roller 102.

Even if the index position of the second roller 102 deviates from the optimum position for packaging (the position to be actually adjusted), the index position is suitable for packaging and is close to the optimum position. It has become. Therefore, in this case, the operator can adjust the second roller 102 to an appropriate position by making a slight fine adjustment from the index position (total value F6).

In this way, by adjusting the position of the second roller 102 with the index position of the second roller 102 calculated by the position calculation means 152 of the position calculation system 150 as a target (reference), the second roller 102 can be easily and easily seconded. The position of the roller 102 can be adjusted. Even if the index position deviates from the appropriate position for packaging, it can be set to the appropriate position by fine adjustment, so compared to the case of adjusting from the beginning without any index as in the past. The position of the second roller 102 can be adjusted remarkably easily, easily, and in a short time. In addition, work variation due to some worker's experience can be minimized.

<Position calculation method, position adjustment method>
A position calculation method and a position adjustment method in the position calculation system 150 will be specifically described with an example.
(First method)

The operator adjusts the width W0 of the bottom surface portion 141 of the bag making device 14 and the height H0 of the upstream side tip portion 142T based on the outer shape and packaging mode of the article XA1 to be packaged. The bag making device 14 is provided with, for example, a measuring means (for example, a tape measure) capable of measuring the width W0 and the height H0 of the upstream tip portion 142T, and the operator can measure the width W0 and the height H0. It is determined, the information (numerical value) is measured, and the information (numerical value) is input via the input means 151 of the position calculation system 150.

In the position calculation system 150, when the input means 151 receives the input of the width W0 of the bottom surface portion 141 of the bag making device 14 and the height H0 of the upstream side tip portion 142T, the position calculation means 152 receives the inputs of the above (Equation 1) to (Equation 1). The fourth variable position information F4, the fifth variable position information F5, and the total value F6 thereof are calculated based on the equation 5), and the output means 153 outputs the total value F6.

The operator acquires the total value F6 (index position) output (for example, displayed on a display means or the like), and sets the position of the second roller 102 with this as a guide.
(Second method)

The operator adjusts the width W0 of the bottom surface portion 141 of the bag making device 14 and the height H0 of the upstream side tip portion 142T based on the outer shape and packaging mode of the article XA1 to be packaged. Then, for example, the first variable position information F1 and the second variable position information are determined by the measuring means provided in the transport path (such as a tape measure arranged along the transport direction T) or the measuring means provided in the bag making device 14. The height H0 of the upstream tip portion 142T of the bag making device 14 and the bag making device 14 is determined, the information (numerical value) is measured, and the information (numerical value) is input via the input means 151 of the position calculation system 150.

In the position calculation system 150, when the input means 151 receives the input of the first variable position information F1, the second variable position information F2, and the height H0 of the upstream tip portion 142T of the bag making device 14, the position calculation means 152 receives the input. The fourth variable position information F4, the fifth variable position information F5, and the total value F6 thereof are calculated based on the above (Equation 4) to (Equation 5), and the output means 153 outputs the total value F6.

The operator acquires the total value F6 (index position) output (for example, displayed on a display means or the like), and sets the position of the second roller 102 with this as a guide.
(Third method)

The operator adjusts the width W0 of the bottom surface portion 141 of the bag making device 14 and the height H0 of the upstream side tip portion 142T based on the outer shape and packaging mode of the article XA1 to be packaged. Then, for example, the fourth variable position information F4 and the fifth variable position information F5 are determined by a measuring means provided in the transport path (such as a tape measure arranged along the transport direction T), and the information (numerical value) is measured. Then, these information (numerical values) are input via the input means 151 of the position calculation system 150.

In the position calculation system 150, when the input means 151 receives the inputs of the fourth variable position information F4 and the fifth variable position information F5, the position calculation means 152 calculates the total value F6, and the output means 153 calculates the total value. Output F6.

The operator acquires the total value F6 (index position) output (for example, displayed on a display means or the like), and sets the position of the second roller 102 with this as a guide.

In any of the first to third methods, the fixed position information C1 to C3 and α1 to α3 may be set in advance (stored in the storage means 155 or the like), and each fixed value may be set. You may input from the input means 151 each time.

Further, the fixed position information C1 to C3 and α1 to α3 are fixed value (eigenvalue) positions to the effect that there is no change each time with respect to the fluctuating position information which fluctuates each time depending on the outer shape and packaging mode of the article XA1. Although it is information, it is possible to change the set values of the fixed position information C1 to C3 and α1 to α3.

Further, in the above example, the case where the distance (total value F6) along the horizontal direction from the convergence point P2 of the bag making device 14 is output as the index position of the second roller 102 has been described as an example, but the index position is , The second roller 102 may be output as a position to be moved, for example, from a horizontal distance from the center P101 of the first roller 101 or a predetermined position (non-variable position) on the article supply device 2 side. It may be output as the horizontal distance of.

<Calculating the number of bags that can be made>
Next, the bag-making possible number calculation system 160 of the packaging machine 1 of the present embodiment will be described. FIG. 8 is a block diagram showing an outline of the bag-making possible number calculation system 160. The bag-making possible number calculation system 160 of the present embodiment includes at least the position calculation system 150, the state detection means 161, the package number calculation means 162, and the control means 154 described above.

The state detecting means 161 is a sensor or the like that detects the state of the packaging film YA1 or the packaging body ZA1 containing the article XA1 at at least one place in the middle of the movement path of the packaging film YA1, and the details will be described later.

The package number calculation means 162 is input to and used in the position calculation system 150, or the position information (first variable position information F1 to fifth variable position information F5, fixed position information C1 to C3) calculated by the position calculation system 150. , Α1 to α3) and the cut pitch CP when the packaged article XA1 is cut by the top sealing device 30 until the portion determined to be abnormal by the state detecting means 161 reaches the discharge position POUT. Calculate the number of normal packages (the number of bags that can be made) discharged in the meantime.

The control means 154 causes the package number calculation means 162 to perform an operation, and obtains, for example, the result (the number of bags that can be made). Then, after discharging the bag-making possible number, each part of the packaging machine 1 is controlled so that the abnormal part (and a plurality of parts before and after it) is discharged out of the system.

<State detection means>
The state detecting means 161 shown in FIG. 8 will be described again with reference to FIGS. 5 and 6. As described above, in the middle of the path F0 of the entire packaging machine 1, there are a plurality of state detecting means 161 for detecting the packaging film YA1 and the state of the packaging (the state of the packaging body YA1). Specifically, the plurality of state detecting means 161 includes a thermal printing roller sensor that detects the state of the thermal printing device 215, a printing inspection camera 203 that inspects an error of the thermal printing device 215 and the appearance of printing, and a labeler 205. A labeler sensor that detects the state when a label is attached, a seam sensor 207 that detects the presence or absence of a seam of the packaging film YA1, a misalignment sensor 211 that detects the presence or absence of a misalignment of the article XA1 in the tubular film, and the like. I have at least. In FIG. 5, the thermal print roller sensor is at the detection position P201, the print inspection camera 203 is at the detection position P203, the labeler sensor is at the detection position P205, the seam sensor 207 is at the detection position P207, and the misalignment sensor 211 is at the detection position P211. The state of the packaging film YA1 is detected.

Then, these state detecting means 161 detect the state of the packaging film YA1 or the packaging, and if an abnormality is found, the abnormal part is discharged from the packaging machine 1 at the discharge position (center position of the roller 209 immediately before the damper) POUT. It is configured to be discharged to (outside the system).

At this time, the length of the packaging film YA1 from the site where the abnormality occurs to the discharge position POUT is acquired, and the length is divided by the cut pitch CP when the article XA1 is cut by the top sealing device 30. As a result, it is possible to calculate the number of normal packages that pass through the discharge position POUT before the portion determined to be abnormal by the state detecting means 161 reaches the discharge position POUT.

That is, the number of normal packages (normally (normally) passed through the discharge position POUT) is traced back from the (normal) package YA1 passing through the discharge position POUT when the abnormality is found to the portion where the abnormality occurred upstream. Then, the number of packages to be transferred downstream, that is, the number of packages that can be produced. This is hereinafter referred to as the "capable number of bags"). This "number of normal packages" is the number of packages that are normally (as normal) passed through the discharge position POUT and transferred downstream, that is, the number of packages that can be produced. It is called "the number of bags that can be made".

Then, a process is performed in which the portion where an abnormality occurs after the grasped bag-making possible number of packages YA1 has passed through the discharge position POUT is removed at the discharge position POUT.

On the other hand, as shown in FIG. 6, a path from the center (fulcrum of the arm 103) P101 of the first roller 101 to the downstream, via the second roller 102, to the convergence point P2 of the bag making device 14 (hereinafter, "manufactured"). The distance F of "path around the bag" is the total value of the winding amount C4 and the first variable position information F1 to the fifth variable position information F5, assuming that the winding amount of the packaging film YA1 on the second roller 102 is C4. (F = F1 + F2 + F3 + C4 + F4 + F5).

That is, when the position of the second roller 102 is adjusted, the distance F of the path around the bag making device changes, so that the path F0 (distance from the original roll YB1 to the discharge position POUT) of the entire packaging machine 1 changes. The length of the packaging film YA1 passing through the wrapping film YA1 fluctuates, and the length of the packaging film YA1 from the detection position of each state detecting means 161 to the discharge position POUT fluctuates.

Therefore, conventionally, the length (distance) from the detection position of each state detecting means 161 to the discharge position POUT (the length from the abnormal portion to the discharge position) is predicted by adjusting the position of the second roller 102. However, the number of bags that can be made was calculated. However, when the distance F of the path around the bag making device changes, the prediction of the length from the abnormal part to the discharge position is complicated, so that the calculation of the number of bags that can be made is also very complicated. Further, the prediction of the length from the abnormal portion to the discharge position largely depends on the experience of the operator as in the adjustment of the second roller 102, and the problem of variation in work efficiency also occurs.

Therefore, in the present embodiment, the length (distance) from the detection position of each state detection means 161 to the discharge position POUT (from the abnormal portion) according to the adjustment of the position of the second roller 102 by the bag-making possible number calculation system 160. The length to the discharge position) was calculated, and the number of products that could be produced from each state detection means 161 (the number of bags that could be made) was calculated.

Hereinafter, an example of each information used in the bag-making possible number calculation system 160 will be described with reference to FIGS. 9 and 5. FIG. 9 is a table showing each information used in the bag-making possible number calculation system 160 and an example of the calculation formula.

First, FIG. 3A is a table showing a list of information (distances) that is a reference for calculation, and shows the distance between predetermined positions.

The distance L1 is the distance from the position POUT of the central axis of the roller 209 immediately before the damper to the center position P17 of the top seal device 30.

The distance L2 is the distance from the center position P17 of the top seal device 30 to the convergence point P2 of the bag making device 14.

The distance L3 is the distance from the convergence point P2 of the bag making device 14 to the center (fulcrum of the arm 103) P101 of the first roller 101, and is a path around the bag making device that is input to the position calculation system 150 and used and calculated. Distance F (F = F1 + F2 + F3 + C4 + F4 + F5).

The distance L4 is the distance from the center (fulcrum of the arm 103) P101 of the first roller 101 to the detection position P207 on the packaging film YA1 by the seam sensor 207.

The distance L5 is the distance from the center (fulcrum of the arm 103) P101 of the first roller 101 to the detection position P205 on the packaging film YA1 by the labeler detection sensor.

The distance L6 is the distance from the center (fulcrum of the arm 103) P101 of the first roller 101 to the detection position P203 on the packaging film YA1 by the print inspection camera 203.

The distance L7 is the distance from the center (fulcrum of the arm 103) P101 of the first roller 101 to the detection position P201 on the packaging film YA1 by the thermal printing sensor.

The distance L8 is the distance from the center position P17 of the top sealing device 30 to the detection position P211 on the packaging film YA1 by the misalignment sensor 211.

In this example, the values other than the distance L3 are eigenvalues (fixed values) of the packaging machine 1.

FIG. (B) is a table showing an example of calculation of the distance from the detection position by each state detection means 161 calculated by the package number calculation means 162 of the bag-making possible number calculation system 160 to the discharge position POUT. This is an example of calculating the residual film length in the transport path on the downstream side from the detection position of each state detection means 161 when an abnormality is detected by the state detection means 161.

The residual film length X1 is the discharge length of the packaging film YA1 when an abnormality is detected during printing. Specifically, it is the distance from the detection position S201 of the thermal print sensor to the center (discharge position POUT) of the roller 209 immediately before the damper, and is a value calculated by the following (Equation 6).

X1 = L1 + L2 + L3 + L7 (Equation 6)
To.

The residual film length X2 is the discharge length of the packaging film YA1 when an abnormality is detected during the printing inspection (appearance inspection). Specifically, it is the distance from the detection position P203 on the packaging film YA1 by the print inspection camera 203 to the center (discharge position POUT) of the roller 209 immediately before the damper, and is a value calculated by the following (Equation 7).

X2 = L1 + L2 + L3 + L6 (Equation 7)

The residual film length X3 is the discharge length of the packaging film YA1 when an abnormality is detected during label sticking. Specifically, it is the distance from the detection position P205 on the packaging film YA1 by the labeler detection sensor to the center (discharge position POUT) of the roller 209 immediately before the damper, and is a value calculated by the following (Equation 8).

X3 = L1 + L2 + L3 + L5 (Equation 8)

The residual film length X4 is the discharge length of the packaging film YA1 when an abnormality is detected in the seam state. Specifically, it is the distance from the detection position P207 on the packaging film YA1 by the seam sensor 207 to the center (discharge position POUT) of the roller 209 immediately before the damper, and is a value calculated by the following (Equation 9).

X4 = L1 + L2 + L3 + L4 (Equation 9)

The residual film length X5 is the discharge length of the packaging film YA1 when the misalignment occurs. Specifically, it is the distance from the detection position P205 on the packaging film YA1 by the labeler detection sensor to the center (discharge position POUT) of the roller 209 immediately before the damper, and is a value calculated by the following (Equation 10).

X5 = L1 + L8 (Equation 10)

<Calculation method for the number of bags that can be made>
A method for calculating the number of possible bags in the bag-making possible number calculation system 160 will be specifically described with an example.

When an abnormality is detected by any of the plurality of state detecting means 161 while packaging the article XA1, the package number calculating means 162 is individually associated with the state detecting means 161 that has detected the abnormality ( The residual film lengths X1 to X5 of the packaging film YA1 are calculated using any of the formulas 6) to (10). When a plurality of abnormalities are detected by the plurality of state detecting means 161, the storage means 155 stores the plurality of abnormalities and performs processing for each abnormality.

Further, the package number calculation means 162 divides the calculated residual film lengths X1 to X5 (any of them) by the cut pitch CP of the package YA1, and the portion determined to be abnormal by the state detection means 161 is found. Calculate the normal number of packages X'passing through the discharge position POUT before reaching the discharge position POUT, and round off the values after the decimal point.

X'= any of X1 to X5 / CP (Equation 11).

Actually, it is preferable not only to discharge only the part where the abnormality has occurred, but also to discharge a plurality of parts before and after the part where the abnormality has occurred as a reserve. That is, the package number calculation means 162 does not directly use the package number X'calculated in (Equation 11) as the bag-making possible number X, but uses the package number X'calculated in (Equation 11). The value obtained by subtracting the number of spares N is defined as the number of bags that can be made X.

X = X'-N (N = 1 or 2, etc.) (Equation 12)

The control means 154 is a portion (front and back) where an abnormality occurs after the package YA1 having a bag-making possible number X calculated by the package number calculation means 162 normally passes through the discharge position POUT. (Including one or two spare (normal) packaging bodies YA1) are discharged to the outside of the packaging machine 1 (out-of-system discharge).

In the control means 154, the number of packages X'calculated by the package number calculation means 162 according to (Equation 11) is set as the number X that can be made into bags, and X'(X) packages YA1 are normally discharged at the discharge position POUT. After passing through, the portion where the abnormality has occurred may be discharged to the outside of the packaging machine 1 (exhaust from the system).

If the calculated number of bags that can be made X and the actual number of bags that can be made are different, the number of bags that can be made can be changed (corrected) using, for example, the touch panel of the output means 153 and the input means 151. it can. Then, the storage means 155 stores the calculation result together with the actual number of bags that can be made in association with the product data (wrapping film width, material, bag making device type, cut pitch, physical property data of the article, etc.). .. These data may be used in the subsequent calculation of the number of bags that can be made.

Further, in this example, after the control means acquires the calculation result (bag-making possible number X) of the bag-making possible number calculation system 160 and discharges the bag-making possible number X, an abnormal part (and a plurality of parts before and after it). ) Is automatically controlled so as to be discharged from the system.

However, not limited to this example, the bag-making possible number calculation system 160 includes input means capable of inputting, using, and calculating variable position information and fixed position information in the position calculation system 150, and includes variable position information and fixed position. The bag-making possible number X may be calculated based on the input of information, and in that case, it may be shared with the input means 151 of the position calculation system 150.

Conventionally, it has been necessary for the person in charge to predict the number of bags that can be made from the site where the abnormality has occurred, according to the outer shape and packaging mode of the article XA1. However, in this case (especially in the case of new article XA1 and packaging film YA1 material with no track record), is the predicted number of bags that can be made by performing preliminary packaging before the start of the actual processing correct (predicted manufacturing)? It is necessary to confirm (whether the abnormal part reaches the discharge position properly if the possible number of bags is discharged), and there are problems that the packaging film YA1 is wasted and the work efficiency is poor.

According to the present embodiment, the bag-making possible number calculation system 160 calculates the bag-making possible number X based on the input, use, and calculated variable position information and fixed position information of the position calculation system 150. It becomes easy to grasp the number of possible bags X. In addition, since the number of bags that can be made X can be calculated with high accuracy, the work of performing preliminary packaging and confirming the predicted number can be reduced, waste of the packaging film YA1 can be eliminated, and work efficiency can be significantly improved. ..

<Other Embodiments>
As shown in FIG. 10, the arm 103 may be configured to be rotatable (swing) within a predetermined angle about its fulcrum (rotation axis of the first roller 101). That is, the second roller 102 may be configured to be rotatable around the first roller 101 (center axis 101C) clockwise and counterclockwise within a predetermined angle in the figure.

The values of the fixed position information α1 to α3 differ depending on the type of the bag making device 14. Therefore, when the bag cannot be made only by horizontally moving the second roller 102 along the longitudinal direction of the arm 103 set in the horizontal state as in the present embodiment, the second roller 102 is moved to the arm 103. While moving in the longitudinal direction of the arm 103, the arm 103 is swung to adjust the bag making.

A sensor for detecting the position of the second roller 102 of the packaging machine 1 and the angle (tilt angle) of the arm 103 is provided, and the operator makes fine adjustments from the index position of the second roller 102 to make fine adjustments to the second roller. When 102 is adjusted to an appropriate position, (Equation 1) to (Equation 5) are recalculated, and the calculation result is stored in the storage means 155 in association with the information of the article XA1 (and the packaging film YA1). You may.

Further, the output means (display means) 153 may display the position of the second roller 102 and the angle of the arm 103. For example, a detection means for detecting the position of the second roller 102 is provided, the detection result (current position) is displayed on the display means 153, and the scale and the index position of the second roller 102 calculated by the position calculation means 152 are displayed. (Total value F6) may be displayed so that the position of the second roller 102 can be adjusted interactively while referring to the display means 153. Further, the display means 153 may display an illustration, an image (photograph), a moving image, or the like to guide the position adjustment.

Further, the position of the second roller 102 (movement in the longitudinal direction of the arm 103 and the angle of the arm 103) is assumed to be driven by a driving means (for example, a servomotor), and the position calculating means 152 calculates the position of the second roller 102. The control means of the packaging machine 1 may automatically adjust the position based on the index position (total value F6).

Further, acquisition means (position detection means, etc.) for acquiring various position information (variable position information, fixed position information) are provided, and based on the index position (total value F6) of the second roller 102 calculated by the position calculation means 152. When the appropriate position is determined (by making fine adjustments as necessary), the position information of each part is automatically or manually registered in the storage means 155, and is called at the next packaging and registered manually or automatically. You may set it to the value.

For example, the input means 151 (or the output means 153) is provided with a registration button or the like, and when the registration button is operated, the position of the second roller 102, the angle of the arm 103, the width W0 of the bag making device 14, or the like. All (or some) current positions such as the height H0 of the upstream tip portion 142T may be acquired and registered.

In addition, when creating (setting) new product data (wrapping film width, material, bag making device type, cut pitch, physical property data of goods, etc.), the thermal printing device 215 causes a dummy abnormality to cause thermal. The distance from the printing device 215 to the ejection position POUT may be measured. Specifically, when a dummy abnormality is generated in the thermal printing device 215, an abnormality signal is transmitted from the thermal printing device 215, and when the abnormality occurs, the abnormality is displayed (printed) on the packaging film located in the thermal printing device. do. At this time, the position of the thermal printing device 215 in the direction orthogonal to the film transport direction is adjusted so that an abnormality is displayed (printed) on the upper surface of the tubular film.

Then, based on the calculated value (bag-manufacturable number) calculated by the bag-making possible number calculation system 160 of the present embodiment, the package in which the dummy abnormality is generated is placed at the position immediately before the discharge position POUT (specifically, the bag-making possible number calculation system 160). It is automatically transported to a position 2 to 3 in front of the package and stopped. After that, the package with the dummy abnormality display is manually transported to the discharge position POUT. By operating at that position (state) (for example, pressing the registration button on the setting screen), the length (distance) from the thermal printing device 215 to the discharge position POUT is measured by the distance measuring device (see FIG. 11). The number of possible bag-making may be calculated based on this, and the possible number of bags may be stored in the storage means 155. Then, this data may be used when calculating the distance from each detection position to the discharge position POUT.

FIG. 11 is a schematic view showing an example of the distance measuring device 53. As shown in FIG. 11, the distance measuring device 53 includes a wide receiving roller 53a, a narrow rotating roller 53b, and an encoder 53c attached to the rotating roller 53b, which are arranged to face each other with the strip-shaped packaging film YA1 interposed therebetween. It is composed of and. The receiving roller 53a is wider than the width of the strip-shaped packaging film YA1 so as to come into contact with the entire surface thereof, and is supported by a bearing (not shown) in a free state to be rotatable. On the other hand, the rotating roller 53b is urged toward the receiving roller 53a, and is also supported by a bearing (not shown) in a free state to be rotatable.

As a result, the receiving roller 53a and the rotating roller 53b are sandwiched between the strip-shaped packaging film YA1 at a predetermined pressure, and the receiving roller 53a and the rotating roller 53b rotate as the strip-shaped packaging film YA1 moves. ..

Since a known encoder 53c is attached to the rotating shaft of the rotating roller 53b, a pulse signal is output from the encoder 53c as the rotating roller 53b rotates. Since the circumference of the rotating roller 53b is known and the moving distance of the strip-shaped packaging film YA1 is equal to the moving distance of the circumferential surface of the rotating roller 53b, the rotating roller 53b has a unit angle (angle between adjacent pulses). The moving distance (reference moving distance T0) of the packaging film YA1 when rotated is uniquely determined. Therefore, if the pulses output from the encoder (one pulse is output for each unit angle) are counted and the number of pulses PN is counted, the moving distance TL at that time can be obtained by the following (Equation 13).

TL = PN x T0 (Equation 13)

As described above, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit and technical idea.

For example, in the above embodiment, the case where the packaging machine 1 is a horizontal bag-making filling machine has been described as an example, but a vertical bag-making filling machine may be used.

Further, the wrapping machine 1 may be a general wrapping machine (for example, a wrapping machine in which gas is not positively filled at the time of bag making), or a gas filling wrapping machine in which gas is continuously filled at the time of bag making. It may be. Further, the wrapping machine 1 may be a three-way sealing machine, a four-way sealing machine, or a shrink wrapping machine.

Further, the center seal by the center seal device 16 may be attached to an envelope that seals the front surface of the film and the back surface of the film in contact with each other.

In the above embodiment, the packaging film YA1 supplied to the bag making device 14 is supplied to the bag making device 14 from diagonally above and joins the article XA1, but the packaging film YA1 is manufactured from diagonally below. It may be supplied to the bag 14 and merged with the article XA1.

1 Packaging machine 2 Goods supply device 3 Film supply device 4 Packaging machine body 5 Sprocket 6 Chain 7 Finger 8 Original shaft 14 Bag making machine 14a Supply port 30 Top seal device 101 First roller 102 Second roller 103 Arm 141 Bottom part 141A First bottom surface portion 141B Second bottom surface portion 141S Slit 142 Side surface portion 142A First side surface portion 142B Second side surface portion (guide means)
142T Upstream tip 143 Top surface 150 Position calculation system 151 Input means 152 Position calculation means 153 Output means 154 Control means 155 Storage means 160 Bag-making possible number calculation system 161 State detection means 162 Package number calculation means 201 Thermal printing roller 203 Print inspection camera 205 Labeler 207 Seam sensor 211 Misalignment sensor 215 Thermal printing device 205 Labeler 219 Discharge device XA1 Article YA1 Packaging film ZA1 Packaging

Claims (22)

The first roller on which the strip-shaped packaging material unwound from the raw fabric roll is hung,
A second roller, in which the packaging material is hung downstream from the first roller and is movable relative to the first roller,
The width of the bottom portion, and the position of the guide means provided along the side surface portions are possible variations, manufacturing to the second roller is supplied through the superposed end edges of the packaging material tubular In a packaging machine that has a bag and supplies and wraps articles to the tubular packaging material.
A position calculation system used when adjusting the position of the second roller with respect to the first roller according to the shape of the article.
An input means that accepts input of position information based on the fluctuating part of the bag making device, and
A position calculation means for calculating the index position of the second roller based on the position information and preset information, and
An output means for outputting the calculated index position is provided.
The preset information is information including at least the angle of entry of the packaging material into the bag making device.
The index position is the position of the second roller that can be supplied to the bag making machine while applying appropriate tension to the packaging material.
A position calculation system characterized by this. The preset information includes an angle with the upstream end of the bag making device as an apex and an opening angle of the packaging material at the convergence point of the bag making device.
The position calculation system according to claim 1. The position information is information on the frontage shape of the supply side of the bag making device.
The position calculation system according to claim 1 or 2, wherein the position calculation system is characterized in that. The position information is the height of the upstream tip of the width and the guide means of the bottom surface portion of the bag unit,
Position calculation system according to any one of claims 1 to 3, characterized in that. The position information from the convergence point of the packaging materials in the bag unit is information including a distance to the position to be bent from the bottom surface portion toward the upstream side end portion of the guide means,
The position calculation system according to claim 1. The position information is information including a horizontal distance from a position where the packaging material is bent from the bottom surface toward the upstream tip of the guide means to the upstream tip of the guide means.
The position calculation system according to claim 5. The second roller is configured to be rotatable around the first roller.
The position calculating means calculates the index position based on the rotation angle of the second roller and the position information.
The position calculation system according to any one of claims 1 to 3, wherein the position calculation system is characterized in that. It is a system for calculating the number of bags that can be made in a packaging machine.
The position calculation system according to any one of claims 1 to 7.
A state detecting means for detecting the state of the packaging material or the packaging at at least one place in the middle of the movement path of the packaging material , and
Until the portion determined to be abnormal by the state detecting means reaches the discharge position based on the position information, the calculation result of the position calculating means, and the cut pitch when the article is cut by the sealing means. It is provided with a package number calculation means for calculating the normal number of packages discharged to the vehicle.
Bag making possible number calculating system, characterized in that. The means for calculating the number of packages is
Based on the position information and the calculation result of the position calculation means, the discharge length of the packaging material from the state detection position by the state detection means to the position to be cut by the sealing means is calculated, and the discharge length is calculated as described above. Divide by the cut pitch to calculate the number of packages.
The bag-making possible number calculation system according to claim 8. The first roller on which the strip-shaped packaging material unwound from the raw fabric roll is hung,
A second roller, in which the packaging material is hung downstream from the first roller and is movable relative to the first roller,
The width of the bottom surface and the position of the guide means provided along the side surface can be changed, and both ends of the packaging material supplied via the second roller are overlapped to form a tubular shape. In a packaging machine that has a bag and supplies and wraps articles to the tubular packaging material.
A position calculation method used when adjusting the position of the second roller with respect to the first roller according to the shape of the article.
Position information based on the variable portion of the bag making device is acquired, and is suitable for the packaging material based on the position information and information including at least a preset angle of entry of the packaging material into the bag making device. The index position of the second roller is calculated so that it can be supplied to the bag making machine while applying tension.
A position calculation method characterized by this. The preset information includes an angle with the upstream end of the bag making device as an apex and an opening angle of the packaging material at the convergence point of the bag making device.
The position calculation method according to claim 10, wherein the position is calculated. The position information is information on the frontage shape of the supply side of the bag making device.
Position calculating method according to claim 10 or claim 11, characterized in that. The position information is the width of the bottom surface portion of the bag making device and the height of the upstream end portion of the guide means.
The position calculation method according to any one of claims 10 to 12, wherein the position calculation method is characterized. The position information is information including a distance from the convergence point of the packaging material in the bag making device to a position where the bottom surface portion is bent toward the upstream end portion of the guide means.
The position calculation method according to claim 10, wherein the position is calculated. The position information is information including a horizontal distance from a position where the packaging material is bent from the bottom surface toward the upstream tip of the guide means to the upstream tip of the guide means.
The position calculation method according to claim 14, wherein the position is calculated. The second roller is configured to be rotatable around the first roller.
The index position is calculated based on the rotation angle of the second roller and the position information.
The position calculation method according to any one of claims 10 to 15, wherein the position calculation method is characterized. It is a method of calculating the number of bags that can be made by a packaging machine.
The index position is acquired by the position calculation method according to any one of claims 10 to 16.
Keep by the state detecting means provided in at least one position of the movement path during the pre-Symbol packaging material to detect the state of the packaging material or packaging,
Based on the position information, the calculation result of the index position, and the cut pitch when the article is cut by the sealing means, the portion determined to be abnormal by the state detecting means is discharged before reaching the discharge position. Calculate the normal number of packages,
A method for calculating the number of bags that can be made . Based on the position information and the calculation result of the index position, the discharge length of the packaging material from the state detection position by the state detection means to the position to be cut by the sealing means is calculated, and the discharge length is calculated as the cut pitch. The number of packages is calculated by dividing by the length of
The method for calculating the number of bags that can be made according to claim 17 . Claims 1 comprises a position calculation system according to any one of claims 7, packing machine. A packaging machine comprising the bag-making possible number calculation system according to claim 8 or 9. The position calculating method according to any one of claims 16請Motomeko 10 can be calculated the index position, the packaging machine. A packaging machine capable of calculating a normal number of packages by the method for calculating the number of bags that can be made according to claim 17 or 18.

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