JP4904540B2 - Packaging equipment - Google Patents

Description

  In the present invention, when packaging a package such as a newspaper with a resin film so that the newspaper delivered on a rainy day does not get wet with rain, the printed pattern printed on the resin film is adapted to the package. Belongs to the technical field of packaging equipment for packaging.

In order to wrap a newspaper to be delivered with a resin film so that it does not get wet, a packaging device is used which sandwiches a newspaper between two resin films and heat seals the four sides of the newspaper to seal and wrap it. I came. In many cases, the resin film applied to the packaging apparatus is printed on the front side. This printing has produced new effects such as aesthetic effects and advertising effects.
Such a packaging apparatus will be described with reference to FIGS. 4 (a) and 4 (b) and FIGS. 5 (a) and 5 (b).

First, FIGS. 4A and 4B will be described. FIG. 4A is a configuration diagram of the entire packaging apparatus showing a general example in this background art, and FIG. 4B is an example of a film used for the packaging, and a film and a newspaper to be packaged. It is a top view which shows arrangement | positioning relationship.
In this packaging apparatus, as shown in FIG. 4A, two film rolls 4 each having a long film 1 wound in a roll shape are used, and are fed out from these film rolls 4. The newspaper 5 as a package is inserted and sandwiched between the long film 1 and transported, and then temporarily stopped, the rear end side and both sides of the newspaper 5 of the film 1 are thermally welded, and transported. Is resumed, and the film 1 is cut at the welded portion on the rear end side of the newspaper 5. At least one of these long films 1 is printed with printed patterns 2 such as advertisements and advertisements at regular intervals, as shown in FIG. 4B. A mark 3 indicating the position of the printed pattern 2 is arranged. At the time of packaging, the position of the mark 3 is detected, and the article to be packaged (the newspaper 5 in FIG. 4 and, in this example, the newspaper 5 is used as a newspaper 5) and the printed pattern 2 of the film 1 Wrapped so that the position matches.

As an example of a packaging device that performs such alignment, a description will be given with reference to FIGS.
FIG. 5A is a configuration diagram of a packaging device capable of aligning a printed pattern and an object to be packaged, and FIG. 5B is a perspective view showing an example of a film used in the packaging device.
In this example, the alignment of the printed pattern 2 and the mark 3 of the film 1 and the newspaper 5 is performed using three optical sensors (12), and one film is used as a control means for performing the alignment. 1 is used to brake 1. That is, when the optical sensor 12 detects the rear end of the newspaper 5 and the position of the printed pattern 2 and determines that the printed pattern 2 is preferential to the newspaper 5, the film 1 on the side where the printed pattern 2 is present. The positional relationship is corrected over the set time for the brake (see, for example, Patent Document 1).
Japanese Patent Laying-Open No. 2006-1628 (FIGS. 2 and 3)

  In the example in the background art described above, if the film on the side with the printed pattern is more advanced due to the longitudinal relationship between the trailing edge detection timing of the newspaper and the trailing edge detection timing of the mark, the film is braked. As shown in FIG. 5A, both the sensor for detecting the mark and the sensor for detecting the rear end of the newspaper are welded to the rear end of the newspaper. Since the structure is provided in the vicinity of the knife, the rear end of the mark with respect to the printed pattern and the rear end of the newspaper are adjusted at close positions. As a result, the position of the printed pattern is closer to the rear edge of the newspaper.

Therefore, in consideration of the misalignment of the newspaper, the range of the printed pattern is formed shorter than the length of the newspaper.
However, as a result, depending on the type of newspaper, the title logo, which can be said to be the face of a newspaper, may hide the printed pattern on the film, and the newspaper on the packaging device is usually inserted from the fold side, so the newspaper However, some newspapers have a title logo on the opposite open side. In such a case, there is a problem in that inconvenience arises from the viewpoint of newspaper customers' perception.

  The present invention has been made to solve such problems in the background art, and calculates the amount of deviation between the trailing edge of a newspaper and the trailing edge of a mark with respect to a printed pattern, and according to the amount of deviation. Even if the title logo is printed on the front side of the next mark, the title logo is printed on the opening side of the newspaper. It is an object of the present invention to provide a packaging device in which a logo is not hidden by a printed pattern.

In order to solve the above problem, the first configuration of the present invention has the following configurations.
According to the first configuration of the present invention, an object to be packaged is inserted between long resin films that are drawn out from two film rolls and whose leading end portions are welded to each other in the previous welding operation. The product is transported together with these resin films, temporarily stopped, both sides and the rear end side portion of the packaged object are thermally welded, sealed and packaged, and then transport is resumed and cut at the rear end side welded portion. A packaging device for discharging, when a printed pattern is applied to one side of the resin film at regular intervals, and a mark indicating the position of the printed pattern is printed next to the printed pattern As a means for detecting the position and aligning the object to be packaged with the printed pattern, it is a packaging apparatus having the following means.
(A) Insertion detection means for detecting whether or not an article to be packaged has been inserted (b) Mark position detection means for detecting the printing position of the mark (c) State in which the article to be packaged is sandwiched between two films (D) a rear end welding means for heat-welding between the two films that are stopped by sandwiching the object to be packaged at a rear end part of the object to be packaged; A deviation amount between the trailing edge of the mark and the trailing edge of the package is calculated based on the trailing edge detection timing of the package and the trailing edge detection timing of the mark by the mark position detection means, and the deviation amount is set in advance. The mark position detecting means for securing a mark tip margin of a set dimension from the tip of the mark in a portion on the tip side of the mark corresponding to the next printed pattern when the deviation amount is less than the reference value Of the mark After the end is detected, the dimension of the mark leading edge margin is subtracted from the dimension between the trailing edge of this mark and the leading edge of the next mark, and the dimension between the trailing edge welding means and the mark position detecting means is added. And the conveyance is stopped at the position where the rear end welding means comes forward by the set dimension with respect to the tip of the mark,
When the deviation amount exceeds the deviation amount reference value and is within the upper limit of the amount of the mark tip margin of the set dimension from the deviation amount reference value, the dimension of the mark tip margin is The amount of deviation is set to an adjustment margin dimension that is shorter than the deviation amount reference value by a dimension that is smaller than the deviation amount reference value, and the mark is moved from the tip of the mark to the tip side of the mark for the next printed pattern. In order to secure the mark leading edge margin of the adjustment margin dimension, after the trailing edge of the mark is detected by the mark position detecting means, the adjusting margin is determined from the dimension between the trailing edge of the mark and the leading edge of the next mark. The trailing edge welding means is further forward by the dimension of the adjustment margin with respect to the leading edge of the mark, and is conveyed by the dimension obtained by adding the dimension between the trailing edge welding means and the mark position detecting means. Coming The transport stops at the position,
When the deviation amount exceeds the deviation amount upper limit value, the next printed pattern is transported and passed from the leading edge of the mark to the leading edge of the set dimension from the leading edge of the mark to the next printed pattern. In order to ensure margins, the mark position detecting means detects the trailing edge of the mark used for calculating the deviation amount, and further detects the trailing edge of the mark for the next printed pattern. Subtracting the set dimension of the mark leading edge margin from the dimension between the leading edge of the next mark and further conveying the dimension between the trailing edge welding means and the mark position detecting means, The conveyance control means for stopping the conveyance at the position where the rear end welding means comes forward by the set dimension.

Hereinafter, effects in each configuration of the present invention will be described.
In the first configuration of the present invention, the rear end of the article to be packaged is detected by detecting the rear end of the object to be packaged and detecting the position of the mark indicating the position of the printed pattern by the insertion detecting means and the mark position detecting means. Based on the detection timing and the trailing edge detection timing of the mark, the amount of deviation of the trailing edge of the package relative to the trailing edge of the mark is calculated. First, when the amount of deviation is less than the deviation amount reference value After the trailing edge of the mark is detected, the conveyance control means allows the film necessary for one wrapping and the package to be wrapped with this film to the mark leading edge of the film in the next wrapping operation. Since it is configured to transport to the position where the rear end welding means reaches forward by the set dimension and stop this transport, ensure that the mark leading margin of the above set dimension is secured on the mark leading end side and wrap the packaged item. Can Therefore, there is an effect that the printed pattern of the film with respect to the packaged object can be packaged while maintaining an appropriate positional relationship, and secondly, the deviation amount exceeds the deviation amount reference value. If the dimension is larger than the reference value by the dimension equivalent to the above set dimension, the mark tip margin is set to a dimension that is shorter than the set dimension by the amount by which the deviation exceeds the deviation standard value. After the mark trailing edge is detected as the re-adjusted margin size, the conveyance control means considers the adjustment margin size as much film as necessary for one packaging, and the package to be packaged with this film Is transferred to the position where the rear end welding means reaches the front of the mark end of the next package by the adjustment margin dimension, and the conveyance is stopped at this position. Against Min decreased the amount exceeds the shift amount reference value is found in the packaging, a printed pattern with respect to the packaged articles can be packaged so as to be substantially proper position, there is an effect that.

  Further, in these first and second cases, when the package is a newspaper having a title logo at the rear end in the transport direction, the problem that the title logo of the newspaper is hidden in the printed pattern of the film can be eliminated. Thirdly, when the deviation amount exceeds the deviation amount upper limit value, the mark leading margin itself can no longer be secured, so in the packaging operation, after the trailing edge of the mark is detected, the next printed pattern is allowed to pass. In addition, since the leading edge of the mark of the set dimension is secured at the leading edge of the mark of the next printed pattern, this one packaging includes two printed patterns, but other packaging Then, there is an effect that it is possible to secure the margin of the mark end of the set dimension, and to package while maintaining the positional relationship between the packaged object and the printed pattern of the film properly.

  In the present invention, the insertion detection means and the mark position detection means are arranged so that the light emitting element and the light receiving element are opposed to each other, and light from the light emitting element is blocked when the mark of the package or film passes between them. An optical sensor that detects whether the level is lowered or decreased by the light receiving element is the best.

  As the conveying means, the upstream side of the roller that drives and controls the conveying belt in the conveying direction so that the object to be packaged can be conveyed downstream with the film sandwiched between two films. It is best to have a structure in which a roller that rotates so as to sandwich and pull the above-mentioned packaged object and film between the roller.

As the rear end welding means, it is preferable to use a cut heater so that two films are thermally welded in the full width direction with respect to the transport direction and then cut at this portion when transported again.
As the conveyance control means, the film conveyance amount is controlled in accordance with the deviation amount, so that it is best to use an electronic circuit using a CPU.

  Moreover, it is preferable to employ a pulse motor capable of measuring the transport distance as a drive source for the transport means. By using the pulse motor, the control by the electronic circuit using the CPU itself is easy, and the transport amount The effect of improving the accuracy is also born.

Next, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an arrangement diagram showing the arrangement relationship of an article to be packaged and each component with respect to a printed pattern and a mark of a film for explaining an embodiment of the present invention.
First, the film 1 used in this example will be described. This film 1 is the same as the film used in the background art, and is fed out from a film roll 4 in which a long film is wound into a roll shape. A printed pattern 2 is printed at regular intervals on a film 1 which is a front side of a long film during packaging, and a mark 3 indicating the position of the printed pattern 2 is printed next to the printed pattern 2. ing.
The front side of the printed pattern 2 and the tip of the mark 3 are on a straight line, and the rear side of the printed pattern 2 and the rear end of the mark 3 are on a straight line. The distance from the rear end of the mark 3 to the front end of the next mark 3 is set to 95 mm in consideration of the case where a YU newspaper is targeted as an article to be packaged.

  In the packaging device in this embodiment, the insertion sensor 6 that detects whether the newspaper 5 is inserted and conveyed from the upstream side in the direction in which the film 1 and the newspaper 5 are conveyed, and the printing position of the mark 3 are detected. There is a mark sensor 7 to be cut, and on the downstream side there is a cut heater 9 (rear end welding means) for thermally welding the two films in the width direction, and further on the downstream side the newspaper 5 is cut. An internal sensor 8 for detecting whether or not the rear end of the newspaper 5 has passed is provided so that the welding can be successfully performed without being applied to the heater 9. For the insertion sensor 6, the mark sensor 7, and the internal sensor 8, optical sensors including light emitting elements and light receiving elements are used.

  An object of the present invention is to prevent the title logo of the newspaper to be packaged from being hidden by the printed pattern of the film. In order to achieve this purpose, first, the film for the dimensions of each part of the newspaper is used. The position and dimensions of the printed pattern and mark are determined, and the arrangement, dimensions, etc. of each part are shown in FIG. 1 in consideration of the operation of each part, the state after packaging, etc. in the packaging apparatus of the present invention. It is determined as follows. The operation of the present invention will be described below.

  First, as a first case, when the deviation amount (Kcur) is equal to or less than the deviation amount reference value (SKcur), a conveyance control means (not shown) is provided to provide a mark leading edge margin of a set dimension at the leading edge portion of the mark 3 of the film 1. , The difference (deviation amount) between the rear end of the mark 3 and the rear end of the newspaper 5 is calculated. If this difference (deviation amount Kcur) is within the deviation reference value (SKcur), the mark sensor 7 3 After the detection of the trailing edge of the mark 3, the dimension between the trailing edge of the mark and the leading edge of the mark for the next printed pattern (95 mm) to the dimension of the mark leading edge margin (Snxt, 20 mm in this embodiment) Is further transferred, and the dimension (33.7 mm) between the cut heater 9 and the mark sensor 7 is added, and when the cut heater 9 comes to the set dimension (Snxt) in front of the tip of the mark 3. Stop the conveyance of the film 1 I am doing so.

  Next, as a second case, when the deviation amount (Kcur) exceeds the deviation amount reference value (SKcur) and is within the deviation amount upper limit value (MKcur), the dimension of the mark tip margin is set to the above-described set dimension (Snxt , 20 mm), the adjustment margin dimension is set to a dimension shorter than the deviation reference value (SKcur) by the amount of deviation (Kcur), and the tip 3 of the mark 3 for the next printed pattern 2 is In order to ensure the mark leading edge margin after being set forward from the leading edge of the mark 3, after the trailing edge of the mark 3 is detected by the mark sensor 7, the trailing edge of the mark 3 and the next printed pattern 2 are detected. Subtract the dimension of the mark leading edge margin after resetting from the dimension between the mark 3 and the leading edge of the mark 3, and further convey the dimension between the cut heater 9 and the mark sensor 7 and add it to the leading edge of the mark 3. Forward by the size of the mark edge margin after resetting To stop this transport where the cut heater 9 came.

Further, as a third case, when the deviation amount (Kcur) exceeds the deviation amount upper limit value (MKcur, this example SKcur + 20 mm), the next printed pattern 2 is conveyed and passed to the next printed pattern 2. The same as in the first case, after the trailing edge of the mark 3 is detected so that the mark leading edge margin of the above-mentioned set size is secured in the leading edge portion of the mark forward from the leading edge of the mark 3. Only the dimensions are transported and the transport is stopped.
Here, with respect to the grounds for setting the above dimensions, the dimensions of each part of the newspaper 5, the dimensions of each part of the film 1, and the state in which the newspaper 5 is packaged with this film 1 when the YU newspaper is targeted as an article to be packaged. This will be described with reference to 2 (a) to (c).

2A is a plan view showing the dimensions of each part of the newspaper 5 including the title logo, and FIG. 2B shows the arrangement of the printed pattern 2 and the marks 3 on the film 1 that wraps the newspaper 5. FIG. FIG. 2C is a plan view showing a dimensional position relationship between the newspaper 5 and the film 1 when the newspaper 5 is wrapped with the film 1.
As can be seen from FIG. 2, the title logo portion of the newspaper 5 is 40 mm, and the total length in the transport direction is 280 mm. Dimensions of each part of the film 1 so that the title logo part is not hidden by the printed pattern 2 when the newspaper 5 is packaged, and 20 mm can be secured as a mark tip margin when the deviation amount is within the deviation amount reference value. The conveyance direction dimension of the printed pattern 2 and the mark 3 is 220 mm.

  FIG. 3 is a plan layout view showing the relationship between the film and each component in the first and second cases in this embodiment, and FIG. 3 (a) is when a mark end margin of a set dimension is secured. FIG. 3B is a plan layout diagram when the margin of the mark tip having an adjustment margin dimension is secured.

  In the present invention, as described above, if the deviation amount does not exceed the deviation amount upper limit value, the mark tip margin of the set dimension or the adjustment margin dimension can be secured, but if the deviation amount upper limit value is exceeded, Since the mark tip margin can no longer be secured, the mark tip margin of the set dimension is secured at the next and further next mark tip portion.

In this embodiment, the conveyance stop control after the trailing edge of the mark 3 is detected by the mark sensor 7 according to the amount of deviation is performed. However, since this packaging apparatus is provided with an internal sensor 8. The conveyance and stop can be controlled using this internal sensor 8.
In this case, returning to FIG. 1, when the adjustment amount of conveyance from the rear end of the newspaper 5 is α, the following Expression 1 is obtained.

Here, if the mark tip margin Snxt is 20 mm,
α = 95-16.3-Kcur-Δt
= 58.7-Kcur-Δt
Δt is a value that allows for the thickness of the package. Since the distance between the cut heater 9 and the internal sensor 8 is 16.3 mm, the standard thickness is not necessary. If Δt = 0, Equation 2 is obtained.

  Kcur is the amount of deviation between the trailing edge of the mark 3 and the trailing edge of the newspaper 5, and the specific dimension is about the same as the dimension of the title logo portion of the newspaper 5 from FIGS. 2 (a) to 2 (c). 40 mm.

In this packaging apparatus, the amount of deviation Kcur between the trailing edge of the mark 3 and the trailing edge of the newspaper is determined by the timing at which the insertion sensor 6 detects the trailing edge of the newspaper 5 and the mark sensor 7 detects the trailing edge of the mark 3. Further, α is obtained from the equation 2 and the following control is performed.
(1) When α> 0, the conveyance is stopped when the internal sensor 8 has advanced by α after detecting the rear end of the newspaper.
(2) When α = 0, the conveyance is stopped as soon as the rear end of the newspaper is detected by the internal sensor 8.
(3) When −20 <α <0, the conveyance is stopped as soon as the rear end of the newspaper is detected by the internal sensor 8.
(4) In the case of α <−20, without stopping immediately, when the rear end of the mark 3 to be subjected to the next packaging operation is detected, 95−20 + 33.7 = 108.7 (mm) ahead , Stop.
That is, it stops when the distance between the next mark 3 tip and the cut heater 9 becomes 20 mm.

  In the case of (4), since the mark tip margin cannot be secured in the next packaging operation, the printed pattern for one time in this packaging operation is included in the previous packaging, and the next, further next In the packaging operation, control is performed so that the margin at the tip end of the set dimension is secured.

  As described above, FIG. 3A shows the dimensions and arrangement relationship of each part when the mark tip margin is 20 mm, and the dimension of the mark 3 itself. FIG. 3B shows the mark tip margin as 20 mm. The dimensions of each part, the arrangement relationship, and the dimension of the mark 3 itself when the distance cannot be obtained are shown.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a layout diagram showing a positional relationship of each component with respect to a film and a printed pattern and a mark for explaining an embodiment of the present invention. It is a top view which shows each part dimension of the film at the time of packaging the film used for the packaging apparatus of this invention, and this film using this film, and each part of a packaging state. FIG. 6 is a layout view in the case where only a set dimension can be secured as a mark tip margin and in the case where it cannot be secured in an embodiment of the present invention. It is a side block diagram of the packaging apparatus which shows the general example in background art, and the top view which shows the relationship between the film used and a to-be-packaged object. It is a side block diagram of the packaging apparatus which shows the specific example in background art, and a perspective view which shows an example of the film used for this packaging apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Film 2 Print pattern 3 Mark 4 Film roll 5 Newspaper 6 Insertion sensor 7 Mark sensor 8 Internal sensor 9 Cut heater 10 Welding mechanism 11 Conveyance mechanism 12 Optical sensor 13 Brake mechanism

Claims (1)

Insert the article to be packaged between the long resin films that are fed out from each of the two film rolls and have their tip portions welded together in the previous welding operation, and the article to be packaged is transported together with these resin films. A packaging device for temporarily stopping, heat-sealing both sides and rear end side portions of the packaged object, sealing, packaging, restarting conveyance after this, cutting at the rear end side welded portion, and discharging. When one side of the resin film has a printed pattern at regular intervals and a mark indicating the position of the printed pattern is printed on the side, the printed position of the mark is detected and A packaging apparatus comprising the following means as means for aligning with the printed pattern.
(A) Insertion detection means for detecting whether or not an article to be packaged has been inserted (b) Mark position detection means for detecting the printing position of the mark (c) State in which the article to be packaged is sandwiched between two films (D) a rear end welding means for heat-welding between the two films that are stopped by sandwiching the object to be packaged at a rear end part of the object to be packaged; A deviation amount between the trailing edge of the mark and the trailing edge of the package is calculated based on the trailing edge detection timing of the package and the trailing edge detection timing of the mark by the mark position detection means, and the deviation amount is set in advance. The mark position detecting means for securing a mark tip margin of a set dimension from the tip of the mark in a portion on the tip side of the mark corresponding to the next printed pattern when the deviation amount is less than the reference value Of the mark After the end is detected, the dimension of the mark leading edge margin is subtracted from the dimension between the trailing edge of this mark and the leading edge of the next mark, and the dimension between the trailing edge welding means and the mark position detecting means is added. And the conveyance is stopped at the position where the rear end welding means comes forward by the set dimension with respect to the tip of the mark,
When the deviation amount exceeds the deviation amount reference value and is within the upper limit of the amount of the mark tip margin of the set dimension from the deviation amount reference value, the dimension of the mark tip margin is The amount of deviation is set to an adjustment margin dimension that is shorter than the deviation amount reference value by a dimension that is smaller than the deviation amount reference value, and the mark is moved from the tip of the mark to the tip side of the mark for the next printed pattern. In order to secure the mark leading edge margin of the adjustment margin dimension, after the trailing edge of the mark is detected by the mark position detecting means, the adjusting margin is determined from the dimension between the trailing edge of the mark and the leading edge of the next mark. The trailing edge welding means is further forward by the dimension of the adjustment margin with respect to the leading edge of the mark, and is conveyed by the dimension obtained by adding the dimension between the trailing edge welding means and the mark position detecting means. Coming The transport stops at the position,
When the deviation amount exceeds the deviation amount upper limit value, the next printed pattern is transported and passed from the leading edge of the mark to the leading edge of the set dimension from the leading edge of the mark to the next printed pattern. In order to ensure margins, the mark position detecting means detects the trailing edge of the mark used for calculating the deviation amount, and further detects the trailing edge of the mark for the next printed pattern. Subtracting the set dimension of the mark leading edge margin from the dimension between the leading edge of the next mark and further conveying the dimension between the trailing edge welding means and the mark position detecting means, The conveyance control means for stopping the conveyance at the position where the rear end welding means comes forward by the set dimension.

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