JP4956803B2 - Packaging equipment - Google Patents

Description

  The present invention prints per package when enclosing and packaging is carried out by heat-sealing the front and rear and the left and right sides of a packaged article such as a newspaper between a printed film on which advertisements and other printing are printed at regular intervals and a non-printed film. The present invention belongs to a technical field of a packaging apparatus that performs packaging while controlling so that one part is positioned in a proper range.

In order to wrap a newspaper to be delivered with a resin film so as not to get wet, a packaging apparatus is used in which the newspaper is sandwiched between two resin films and the four sides are welded and hermetically wrapped.
The resin film applied to this packaging apparatus has come to be printed. Printing has created new added value such as aesthetic effects and advertising effects.
Since a long film wound in a roll shape is applied to the packaging device, and this is cut and used at the same time as newspaper packaging, printing is applied to the long film at regular intervals. If the position of this print does not match the position of the newspaper, it will be cut off in the middle of printing, and the printed part will be divided, making no sense of advertising and aesthetically unfavorable. There has been proposed a packaging device that controls the position of the part and the newspaper. Prints such as advertisements are arranged at regular intervals in the longitudinal direction at the center in the width direction of the print film, and a print position mark is attached to one end in the width direction of the film corresponding to each print position. The apparatus performs control by detecting this.

As a conventional first example of such a packaging apparatus, there is provided a driving means for driving a printing film roll and a non-printing film roll separately, and a newspaper inserted between two films is provided with a printing film roll. There is one that corrects the printing position deviation (see, for example, Patent Document 1).
However, in this example, since two drive means are provided, it becomes expensive.

  Therefore, as a second example, a brake means is provided in the film supply unit on the printing film side, and printing is preferential to the newspaper due to the relationship between the detection timing of the trailing edge of the newspaper and the trailing edge of the printing position mark. If it is determined, there is a packaging device that is corrected by applying a brake for a predetermined time when the next newspaper is inserted (for example, see Patent Document 2).

This is advantageous in that the cost is low because only a brake is provided on one film supply unit side, and correction can be made before the newspaper is added to the transport belt, and thus there are no problems such as wrinkles.
JP 2001-225807 A ([0018], FIG. 4) JP 2006-1628 A ([0027], FIG. 4, FIG. 7)

However, in the second conventional example, since the brake is applied to the newspaper inserted next after the timing relationship between the newspaper and the print mark before and after, there is the following problem.
First, the misalignment cannot be corrected for the first inserted newspaper.
Second, since the variation in the film conveyance amount that occurs after the trailing edge of the newspaper and the printing position mark are detected cannot be reflected, the correction is not sufficient.

  In view of the above-mentioned problems of the prior art, an object of the present invention is to correct a film printing position for an object to be packaged by a leading edge detection signal and a film printing position mark detection signal of the inserted article to be packaged. Thus, it is possible to provide a packaging apparatus that can correct a deviation even with respect to a first inserted newspaper and that can perform more accurate correction by shortening the time from detection to correction as compared with the conventional apparatus.

In order to solve the above problems, the present invention has the following configurations.
In the first configuration of the present invention, one of the two film rolls is fed with a resin film that has been printed with the same content at regular intervals, and the other is fed with a non-printing resin film that has its tip. Is inserted between the two resin films welded to each other, transported together with the film and temporarily stopped, the rear end side of the packaged object and both sides in the width direction are thermally welded and sealed, A packaging device that resumes conveyance, cuts and discharges at a rear end side welding portion, and includes the following means.
A. Tip detection means for detecting the arrival of the tip of the inserted packaged object b. Print position mark detecting means for detecting a print position mark provided corresponding to each print position on the print film c. Brake means for braking the drawer of the printed film from the film roll d. Depending on the reception timing status of the leading edge detection signal and the printing position mark detection signal, the printing part is in the proper position range for the package, the printing part is ahead of the proper position range, or the proper position range. If it is determined that the vehicle is behind, the normal packaging operation is continued if it is determined that the vehicle is in the proper position range, and if it is determined that the vehicle is moving, the brake means performs a brake operation for a predetermined time. When it is determined that the position is delayed, the conveyance is stopped after a predetermined time from the reception of the position mark detection signal and the welding operation is performed. Control means to control to be within the range of

  According to a second configuration of the present invention, in the first configuration, when the front end detection signal is not received when the control unit receives the print position mark detection signal, the print region is ahead of the proper position range. It is the packaging apparatus characterized by determining that it has advanced to.

  According to a third configuration of the present invention, in the first configuration or the second configuration, when the control unit receives the leading edge detection signal and the printing position mark detection signal at the same time, the printing portion is in the proper position range. It is a packaging device characterized by judging.

  According to a fourth configuration of the present invention, in the first configuration, the second configuration, or the third configuration, when the printing unit mark detection signal is not received when the control unit receives the leading edge detection signal. In addition, the packaging device is characterized in that it is determined that the printed part is behind the appropriate position range.

  According to a fifth configuration of the present invention, in any one of the first configuration to the fourth configuration, the printing position mark detection means is disposed on one side in the width direction of the print film, in the film longitudinal direction of the print site. The packaging device is characterized in that it can detect the leading and trailing edges of a single printing position mark provided in correspondence with the above range.

  According to a sixth configuration of the present invention, in any one of the first configuration to the fourth configuration, the printing position mark detecting means is disposed on one side in the width direction of the print film, in the film longitudinal direction of the print site. The packaging apparatus is capable of detecting the leading edge or the trailing edge of any one of the printing position marks in which a plurality of marks are arranged in a line in correspondence with the range.

In the seventh configuration of the present invention, the control means of the first configuration receives the print position mark detection signal and then receives the leading edge detection signal instead of the predetermined time for the brake means to perform the brake operation. It is the packaging device characterized by the time until.

  In the first configuration (basic configuration) of the present invention, the leading edge detection signal and printing of a packaged object when the packaged object is inserted by pressing or dropping between a printing film having a welded tip and a non-printing film. From the print position mark detection signal of the film, it is judged whether the print location of the print film is within the proper position range for the package, and the result is used to correct the package of the detected package Therefore, there is an advantage that the position of the printing site can be corrected even with respect to the package of the packaged object inserted first. As a result, the time from the detection of the deviation to the correction is shorter than in the case of performing the correction of the deviation in the next packaging process based on the deviation data in the previous packaging process as in the conventional apparatus. There is an advantage that correction is possible.

  In the second configuration, the third configuration, and the fourth configuration, the print site is applied to the package depending on whether the leading edge detection signal and the print position mark detection signal are received at the same time or which is received first. Therefore, there is an advantage that the determination method is simple.

  In the fifth configuration, the printing position mark detection means detects the leading edge and the trailing edge of a single printing position mark provided on one side in the width direction of the film in correspondence with the longitudinal range of the printing region. Therefore, when the print area is advanced, the brake means is operated for a predetermined time from the time when the print position mark detection means detects the leading edge of the print position mark, and the print area is within the appropriate position range. If the printing part is delayed, the printing position mark detection means is transported for a predetermined time from the time when the trailing edge of the printing position mark is detected, and the printing part is corrected so that it does not come out of one package. There is an advantage that you can.

  In the sixth configuration, the printing position mark detection means detects the leading edge or the trailing edge of any one of the printing position marks in which a plurality of marks are arranged in a line corresponding to the range of the printing portion in the film longitudinal direction. It is possible to select and set which mark's leading edge or trailing edge is detected as the printing position mark detection signal, corresponding to the change of installation of printing position mark detection means There are benefits that can be done.

In the seventh configuration, the brake operation time from the first configuration to the sixth configuration is a predetermined time, whereas only the time from when the print position detection signal is received until the leading edge detection signal is received. This is to cause the printing film roll to perform a braking operation, and eventually, it is corrected in accordance with the amount of advancement of the print region. Compared with the first to sixth configurations, the print region is within an appropriate range. There is an advantage that it is controlled to be closer to the center.

First, the leading edge detection means and the printing position mark detection means are optical detection means for blocking light or receiving light that is blocked when a detection target passes between the light emitting element and the light receiving element facing each other. Is the best.
The brake means is best configured so that a film pulled out from the film roll is sandwiched between two rollers and the rotation of the roller is braked to brake the film drawer.

  It is simple and best to determine the advance / delay of the print film in the control means based on the order of reception timing of the leading edge detection signal and the print position mark detection signal. That is, if both signals are the same, it is determined that the print part of the print film with respect to the package is within the proper position range, and if the print position mark detection signal is received first, the print part is determined to be advanced. However, when the leading edge detection signal is received first, it is simple and best to determine that the print site is delayed. For this purpose, the leading edge detection means is arranged downstream of the flow of the film sandwiching the object to be packaged relative to the printing position mark detection means, and the distance between the leading edge detection means and the film to which the leading edge is welded is set to the leading edge. Therefore, it is adjusted to an appropriate distance from the leading end when it is inserted to the printing position mark of the printing film.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a diagram showing a configuration and an arrangement side surface of an embodiment of the present invention. First, a basic operation that does not consider correction of the position of the print site will be described.
FIG. 1 shows a state in which the previous packaging operation 5 (hereinafter referred to as a newspaper as an example) is being inserted from the packaging object insertion port 4 after the previous packaging operation is completed. Yes.
From the printing film roll 1, the printing film 2 passes through the brake roller 3, passes between the shutter 15 and the knife receiver 17, and reaches the welding position. From the non-printing film roll 7, the non-printing film 8 passes the intermediate roller. Then, it passes between the shutter 15 and the knife receiver 17 and reaches the position of the welding position, and the leading edge M of both films is welded and closed in the previous packaging process.
Welding is performed by the welding knife 16 advancing to the right and pressing and heating two films against the knife receiver 17.

  The newspaper descends between the tip and the wall of the guide 6 while being pushed toward the right wall by the spring-like guide 6 by its own weight or pushing, and further, the spring 15 is pushed down to reach the tip M. In the middle, when the insertion sensor 9 detects the leading edge of the newspaper, the detection signal is sent to the control circuit 18, and the control circuit 18 sends a drive instruction signal to the transport roller driver 21 to rotate the transport roller 19. Therefore, when the front end M of the welded film is further pushed down and reaches the conveying rollers 19, 19, it is sandwiched between the conveying belts 20 on both rollers and conveyed downward. When the passage of the rear end of the newspaper is detected by the internal sensor 13, the detection signal is sent to the control circuit 18, and the control circuit 18 sends a stop command signal to the transport roller driver 21 to rotate the transport roller 19. Stop.

At this time, therefore, there is no newspaper in the knife receiver 17 and only two films are pushed by the shutter 15 toward the knife receiver 17. Then, the welding knife 16 advances rightward and heat-welds the two films against the knife receiver 17, and the control circuit 18 rotates the conveying roller 19 again to pull it downward and cut at the welded portion.
As a result, the rear ends of the two films wrapping the newspaper and the front ends of the films from the respective film rolls are welded together.

Note that both sides in the width direction of the two films conveyed with the newspaper sandwiched are also welded in the course of conveyance, and the newspaper is sealed all around.
The insertion sensor 9, the registration sensor 11, and the internal sensor 13 are in a state where the light beams from the opposing insertion sensor light emitter 10, registration sensor light emitter 12, and internal sensor light emitter 14 are blocked or blocked. The arrival of the front end or rear end of the package or the front end or rear end of the printing position mark is detected depending on whether the light receiving state is reached.

Next, the operation of correcting the position of the print portion of the print film with respect to the newspaper to be packaged will be described.
Constituent means related to this operation are an internal sensor 13 as a leading edge detecting means for detecting the leading edge of a newspaper, a registration sensor 11 as a printing position mark detecting means for the printing film 2, a control circuit 18 for receiving both signals, and a brake roller 3. And a brake driver 22.
As shown in FIG. 2, a message to be transmitted is printed on the print portion 23 on the print film 2, and one side in the width direction (the right side in the figure) corresponds to the range of the print portion in the longitudinal direction of the film. A print position mark 24 is printed.

2A shows a case where a plurality of marks are arranged and printed in a line in the longitudinal direction of the film, and FIG. 2B shows a case where one mark is printed. In addition, any mark may be used as long as the positional relationship with the print site is fixed.
Such printing is repeated in the longitudinal direction so that one printing site is assigned to one package in accordance with the size of the package. The other film sandwiching the package is unprinted.

FIG. 3 shows a state after the packaging is completed.
(A) is a case where the printing region 23 is in the proper position range, (b) is a case where the printing region 23 is delayed backward (upward in the figure), and (c) is a case where the printing region 23 is ahead (in the drawing). Each case is shown as moving downward. Therefore, in order to bring the printing part into the proper position range, it is necessary to detect whether the printing part 23 that is currently in the process of packaging is in the proper position range, whether it is delayed or advanced before heat welding. There is.

Therefore, in the case of FIG. 3A, that is, when the dimension from the front end of the printing position mark to the front end side welding of the film is D, the distance between the registration sensor 11 and the internal sensor 13 in FIG. It is set to.
By doing in this way, in FIG. 1, if the tip of the printing position mark 24 of the printing film 2 is at a position of the dimension D from the tip M (welding end), When M reaches the height position of the internal sensor 13 and the tip of the printing position mark 24 reaches the height position of the registration sensor 11 at the same time, the tip detection signal from the internal sensor 13 and the printing from the registration sensor 11 are printed. The position mark detection signal is output at the same time, and the control circuit 18 receives both the detection signals at the same time.

Next, when the leading end of the printing position mark 24 of the printing film 2 is at a position larger than D from the leading end M as shown in FIG. However, the tip of the printing position mark 24 has not yet lowered to the height position of the registration sensor 11.
Therefore, when the leading edge detection signal is output from the internal sensor 13, the printing position mark detection signal from the registration sensor 11 is not output. Therefore, the control circuit 18 does not receive the print position mark signal when it receives the leading edge detection signal.

  On the other hand, when the leading end of the printing position mark 24 of the printing film 2 is at a position smaller than the leading end M to D as shown in FIG. The tip M has not yet reached the height position of the internal sensor 13 even if the tip of the tip has reached the height position of the registration sensor 11.

  Therefore, when the printing position mark detection signal is output from the registration sensor 11, the leading edge detection signal from the internal sensor 13 is not output. Therefore, the control circuit 18 does not receive the leading edge detection signal when it receives the printing position mark detection signal.

  Therefore, when the leading edge detection signal and the printing position mark detection signal are received at the same time, the control circuit determines that the printing region is in the proper position range, and receives the printing position mark detection signal when the leading edge detection signal is received. If not, it is determined that the print region is behind, and if the leading edge detection signal is not received when the print position mark detection signal is received, it is determined that the print region is advanced. When it is determined that the position is within the proper position range, the basic operation described first is continued.

That is, while the leading edge of the package 5 reaches the conveying rollers 19 and 19 while pushing down the film-welded leading edge M, it is sandwiched between the conveying belts 20 and conveyed downward. At this time, the printing film 2 and the non-printing film 8 are drawn out by the same amount. When the rear end of the article to be packaged 5 is detected by the internal sensor 13, the detection signal is sent to the control circuit 18, and the control circuit 18 sends a stop command signal to the transport roller driver 21. , 19 stops. Then, the welding knife 16 is advanced to the right, and the two films are pressed against the knife receiver 17 for thermal welding. The conveyance rollers 19 and 19 may be stopped after a predetermined time after the registration sensor detects the trailing edge of the printing position mark.
When the heat welding is completed, the control circuit 18 rotates the transport rollers 19 and 19 again, pulls the package downward, and cuts at the welded portion. When the packaging is completed, a side cross-sectional view is as shown in FIG. The size of the film has some play with respect to the size of the package 5.

  Next, when the control circuit 18 determines that the printing region 23 is advanced, when the registration sensor 11 receives the printing position mark detection signal, it sends a brake operation signal to the brake driver 22 and the brake roller 3. The brake operation is performed for a predetermined time to stop the drawing of the printing film 2.

  On the other hand, if the package 5 is pushed down or is lowered by its own weight, even if the drawing of the printing film 2 is stopped, the non-printing film 8 is not braked, so that only the non-printing film 8 is pulled out and covered. The package 5 goes down. However, the leading edge M, which is the welding position of the two films in FIG. 1, does not drop from the position in FIG. 1 because the drawing of the printing film 2 is stopped.

Accordingly, as the package 5 is lowered, the unprinted film 8 is shaped so as to wrap around from the front end of the package 5 to the right side surface. It will move up.
In this way, even when the printing region 23 is advanced, that is, when the printing region is closer to the tip M than the appropriate position, the package can be corrected to the appropriate position range. As shown in FIG. 4B, when the packaging is completed, the portion that was the tip welded portion 27 in FIG. 4B wraps around the right side surface.

Regarding the time to operate the brake, in an actual device, how much advance deviation occurs if it is not corrected, or how much advance deviation occurs when the correction is performed. It will be set after confirmation.
As a specific setting after this time is determined, a timer may be used. When the print position mark is as shown in FIG. It may be the time until the mark is detected.

  After the brake operation is released, the conveyance by the conveyance rollers 19 and 19 is stopped, the conveyance roller is stopped when the internal sensor 13 detects the rear end of the package 5, the film is welded by the welding knife 16, the conveyance roller is restarted, and the welding is performed. The cutting of the part, the thermal welding on both sides in the width direction of the film, and the like are the same as in the case where the printing site 23 is in the proper range.

  Next, when the control means 18 determines that the printing part 23 is delayed, the rotation of the transport rollers 19 and 19 started when the insertion sensor 9 detects the leading end of the article 5 to be packaged. Even if the internal sensor 13 detects the rear end of the object 5, the control is performed so that the registration sensor 11 does not stop but stops when a predetermined time has elapsed since the registration sensor 11 detected the rear end of the printing position mark 24.

This control is not a control for correcting the position of the printing part 23 with respect to the package 5 as in the case where the printing part 23 is advanced, but the printing part 23 is delayed. It is control that tries to shift backward. Therefore, the length of the film in the conveyance direction after the packaging is completed is as shown in FIG. 4C than the length when the printing portion 23 is in the proper position or when it is corrected because it is in the advanced position. It becomes longer backward (upward in the figure).
The film thermal welding after the conveyance rollers 19 and 19 are stopped, the conveyance roller restart, the cutting at the welding portion, the thermal welding on both sides in the width direction, and the like are the same as when the printing site is in the proper position range.

In the above embodiment, when the printing part 23 is advanced, the brake operation time for drawing out the printing film 2 is a predetermined time after the registration sensor 11 outputs the printing position mark detection signal. The time from when the registration sensor 11 detects the leading edge of the printing position mark 24 on the printing film 2 until the internal sensor 13 detects the leading edge of the package 5, that is, the control circuit receives the printing position mark detection signal. Then, it is possible to stop only for the time until receiving the tip detection signal.
This is to set the time for the brake operation to the time corresponding to the deviation of the printing portion 23 from the appropriate position.

  This is because the time from when the registration sensor 11 detects the leading edge of the printing position mark to when the internal sensor 13 detects the leading edge of the package 5 when the printing area 23 is advanced from the appropriate position is the printing area 23. When the leading edge of the printing position mark 24 comes to the height position of the registration sensor 11, the brake operation is performed to stop the drawing of the printing film 2, and the leading edge of the article 5 to be packaged is the internal sensor 13. When the brake operation is released when the height position is reached, the distance between the leading end of the package 5 and the leading end of the printing position mark determined in that state becomes the same as the interval between the registration sensor 11 and the internal sensor 13. If both sensors are arranged so that this distance is the same as the appropriate position dimension D in FIG. 3A, the above-mentioned brake operation can be turned on and off, and correction according to the advance deviation amount can be made. This is because become.

In the above embodiments, a case where the same as the dimension D in the case of the proper position of FIGS. 3 (a) the distance between the registration sensor 11 and the internal sensor 13, because of spatial, D + alpha or D-alpha It may be.
In the case of D + α, when the leading edge detection signal is received with a delay of time t required to travel the distance α after receiving the printing position mark detection signal, it is determined that the position is within the appropriate position range, and the delay is t If it is larger, it is determined that the print region is advanced, and if the delay is smaller than t or the leading edge detection signal is received first, it is determined that the print region is delayed.
When the interval is D-α, it is determined that the print position mark signal is received when the print position mark signal is received with a delay of time t from the reception of the leading edge detection signal, and printing is performed when the delay is greater than t. It is determined that the portion is delayed, and if the delay is smaller than t or the print position mark detection signal is received first, it is determined that the print portion is advanced.

It is a figure which shows the structure and arrangement | positioning side surface of the Example of this invention. It is a figure which shows the printing surface of the printing film used for this invention packaging apparatus. It is a figure which shows the packaging printing surface in each case where a printing site | part is in an appropriate position, a delay position, and an advance position. It is a sectional side view of the package which packaged by this invention packaging apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Print film roll 2 Print film 3 Brake roller 4 Packaged object insertion port 5 Packaged object 6 Guide 7 Unprinted film roll 8 Unprinted film 9 Insertion sensor 10 Insertion sensor light-emitting device 11 Registration sensor 12 Registration sensor light-emitting device 13 Internal sensor 14 Inside Sensor light emitter 15 Shutter 16 Welding knife 17 Knife receiver 18 Control circuit 19 Conveying roller 20 Conveying belt 21 Conveying roller driver 22 Brake driving device 23 Printing site 24 Printing position mark 25 Film packaging after welding completion cutting 26 Rear end welding portion 27 Tip weld

Claims (7)

One of the two film rolls is fed with a resin film printed with the same content at regular intervals, and the other is fed with a non-printed resin film, the two of which are welded to each other. Insert the item to be packaged between the films, transport it together with the film, temporarily stop it, heat seal the rear end side of the packaged item and both sides in the width direction, seal it, resume conveyance, and weld the rear end side A packaging apparatus for cutting and discharging at a section, comprising the following means.
A. Tip detection means for detecting the arrival of the tip of the inserted packaged object b. Print position mark detecting means for detecting a print position mark provided corresponding to each print position on the print film c. Brake means for braking the drawer of the printed film from the film roll d. Depending on the reception timing status of the leading edge detection signal and the printing position mark detection signal, the printing part is in the proper position range for the package, the printing part is ahead of the proper position range, or the proper position range. If it is determined that the vehicle is behind, the normal packaging operation is continued if it is determined that the vehicle is in the proper position range, and if it is determined that the vehicle is moving, the brake means performs a brake operation for a predetermined time. When it is determined that the position is delayed, the conveyance is stopped after a predetermined time from the reception of the position mark detection signal and the welding operation is performed. Control means to control to be within the range of   2. The control unit according to claim 1, wherein when the leading edge detection signal is not received when the printing position mark detection signal is received, the control unit determines that the printing part has advanced beyond the appropriate position range. Packaging equipment.   3. The packaging device according to claim 1, wherein the control unit determines that the printing portion is in an appropriate position range when receiving the leading edge detection signal and the printing position mark detection signal at the same time.   2. The control unit according to claim 1, wherein when the front end detection signal is received and the print position mark detection signal is not received, the control unit determines that the print region is behind the proper position range. The packaging device according to any one of 2 and 3.   The printing position mark detection means can detect the leading edge and the trailing edge of a single printing position mark provided on one side in the width direction of the printing film so as to correspond to the range of the printing portion in the film longitudinal direction. The packaging device according to any one of claims 1 to 4, wherein   The printing position mark detecting means is arranged on one side in the width direction of the printing film, at the leading edge of any one of the printing position marks in which a plurality of marks are arranged in a line corresponding to the range of the printing portion in the film longitudinal direction The packaging device according to any one of claims 1 to 4, wherein the rear end can be detected. 2. The packaging according to claim 1, wherein the control means is set to a time from when the print position mark detection signal is received until the leading edge detection signal is received, instead of the predetermined time for the brake means to perform the brake operation. apparatus.

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