JP2016037302A - Packing device and package - Google Patents

Abstract

PROBLEM TO BE SOLVED: To create a package in which, resin film sheets which are overlapped to front and rear faces of newspaper which is folded in four, are respectively deposited along four edges of the sheets, and a non-deposition part which is not deposited is provided on an end part near a final fold side of the newspaper on the deposition line along both sides orthogonal to the final fold side of the newspaper.SOLUTION: After films F1, F2 are deposited on a rear end of inserted newspaper S, transport is started again, then the transport is stopped again at a position in which a deposition line F4 of the newspaper S on a rear end side is in a contact range of a side deposition heater 20, and a deposition line F3 on a tip end side is downstream of the side deposition heater 20, and the deposition is performed by the side deposition heater 20.SELECTED DRAWING: Figure 9

Description

  The present invention relates to a packaging device for sandwiching the front and back of a flat rectangular article to be packaged with resin film sheets, and welding and packaging the resin film sheets on the four sides around the article to be packaged, and a newspaper to the resin film by this packaging apparatus. The present invention relates to a package packaged with a sheet.

In order to prevent the newspapers to be delivered from getting wet in the rain, a device for covering with a resin film sheet such as polyethylene is used in newspaper shops. For example, in the apparatus described in Patent Document 1, the tip of the resin film sheet fed from two rolls each wound with a long resin film sheet is welded in advance by the previous welding operation to form a tip welding line. It is housed in the device. When a newspaper is inserted into the apparatus, the newspaper is transported by being sandwiched by resin film sheets from the front and back in a state where the front end of the newspaper and the front-end welding line of the film are substantially coincident with each other. After that, the paper is once stopped at a predetermined position, the rear end side of the newspaper is welded with a welding cutting device to form a rear end welding line, and both sides are welded with a side welding device to form a side welding line. Further, by restarting the conveyance, the film is cut at the rear end welding line, and as a result, a packaged newspaper with the film welded around the four sides is obtained. The rear end welding line remaining in the apparatus after cutting becomes the front end welding line corresponding to the newspaper to be inserted next.
In the apparatus of Patent Document 1, since there is a gap between the end of the side welding device on the upstream side in the newspaper conveying direction (hereinafter simply referred to as the upstream side) and the rear end welding device, the portion corresponding to the gap is A non-welded portion that is not welded is formed. For this reason, after performing welding with this welding cutting device and the side welding device, it can be transported and stopped only for a short time, and the side welding device is operated again to eliminate the non-welding portion and complete sealing. It is like that.
Both the operation of obtaining this completely sealed package and the operation of obtaining the package with the non-welded portion remaining on the upstream side of the side welding line are possible. While the completely sealed package can completely prevent the newspaper from getting wet in the rain, the air in the sealed space cannot be released after the packaging, so that the loadability during carrying at the time of delivery is deteriorated. Therefore, it is possible to use either of the above methods by completely deflating the air before packaging and sealing and packaging, or by taking care not to let rainwater enter from the non-welded portion.

JP 2003-285801 A (paragraphs [0040] to [0053] etc.)

  By the way, the newspaper to be inserted into such a packaging apparatus is folded into four and delivered to a newspaper store. In a newspaper store, after inserting a fold advertisement into the final fold of the four fold, film packaging is performed. When inserting a newspaper into the packaging apparatus, the newspaper is inserted with the last folded side of the four-fold as the head. Therefore, when packaging is performed so as to leave a non-welded portion, the non-welded portion is formed at the end of the newspaper on the open side.

  However, there is a case where the newspaper is stored in the container so that the final folding edge protrudes upward so that the newspaper can be easily taken out from the container provided on the delivery motorcycle or the like at the time of delivery. If it does so, a non-welding part will be located in the bottom of a container. However, when it rains, water may accumulate at the bottom of the container, and this water may infiltrate from the non-welded part and the newspaper may get wet.

  If it is inserted into the packaging device with the opposite side of the final fold side, that is, the open side as the head, a non-welded part will be formed on the final fold side. Pushing may cause the tip of the advertisement to be bent. In addition, the open side is easier to bend than the final folded side, which causes a problem that it is difficult to insert the side into the apparatus.

  The present invention has been made in view of such problems, and an object of the present invention is to obtain a packaging device and a package that are easy to insert into a newspaper and have good handleability of the resulting package.

  In order to solve the above problems, the packaging device according to the first aspect of the present invention is a flat and rectangular packaged object inserted between two resin film sheets whose ends are welded in advance. While being sandwiched and transported between resin film sheets, the resin films on both sides of the packaged object are thermally welded together, and the films on the rear end side of the packaged object are welded together to cut the portion. A packaging device for creating a unit package in which welding lines are formed on the front end side, rear end side, and both sides of the package, respectively, and abuts against the resin film on the rear end side of the package, and the resin film A welding cutting heater that welds and cuts the sheets, and a predetermined distance from the downstream side in the package conveying direction of the welding cutting heater, is in contact with the resin film on both sides of the package, Resin fill A pair of side welding heaters for welding the sheets, a package inserted from the upstream side of the welding cutting heater, a transport means for transporting the resin film sheets stacked on the front and back sides, and a package to be inserted Stop at the position where the object has passed the welding cutting heater, bring the rear end welding cutting heater into contact with the resin film sheet, and perform the first welding to weld the resin film sheets to each other at the contact portion, and then resume conveyance Then, stop again at the position where the welding line on the rear end side is within the contact range of the side welding heater and the welding line on the front end side is downstream of the side welding heater, so that the side welding heater contacts the resin film sheet. And a control means for controlling so as to perform the second welding in which the resin film sheets are welded to each other at the contact portion and then resumed. It is the location.

  According to the first aspect, since the welding is performed at the position where the welding line on the tip side is located downstream of the side welding heater and the side welding is performed, no side welding line is formed in the vicinity of the welding line on the tip side. A non-welded part is formed. Since this non-welded portion is on the front end side, that is, the final folding side of the newspaper, there is an advantage in that a package that does not get wet with rain can be obtained even if the final folding side is loaded upward during delivery.

  A sensor is provided on the downstream side of the front end of the package to be stopped at the time of the first welding and can detect the package to be transported, and the control means transports after the first welding. After the resumption, the conveyance may be stopped immediately after the sensor detects the front end of the package, or after a predetermined time, and the second welding may be performed. Since the stop position for performing the second welding is determined based on the tip of the packaged object, the non-welded portion can be formed stably without being affected by the size of the packaged object.

  After the inserted article to be packaged is stopped at the position where it has passed the welding cutting heater, the side welding heater and the rear end welding cutting heater are brought into contact with the resin film sheet, and the resin film sheets are welded to each other at the contact portion. The first control for controlling to resume the conveyance, and the inserted article to be packaged is stopped at the position where it has passed the welding cutting heater, and the rear end welding cutting heater is brought into contact with the resin film sheet, and the contact portion After the resin film sheets are welded together, the conveyance is resumed, and is stopped again at a position where both the front end and rear end welding lines enter the contact range of the side welding heater, and the side welding heater is applied to the resin film sheet. One or both of the second control for controlling to resume conveyance after the resin film sheets are welded to each other at the contact portion, and further to the first aspect. That of the control, have alternatively a user selectable selection means any one, the control means may execute the selected control in the selection means.

  According to this aspect, the non-welded portion is formed on the final fold side of the newspaper, the non-welded portion is formed on the opposite side of the newspaper, or the Various types of packages can be obtained, such as complete sealing without the weld.

  It is a package in which a front and back sides of a newspaper folded in four are sandwiched between resin film sheets, and a welding line is formed in which two resin film sheets are welded along the four edges,

  The end of the welding line along both sides orthogonal to the final fold side of the newspaper is closer to the final crease side of the newspaper, away from the welding line along the final fold of the newspaper, and a non-welded part is formed between them. A package characterized in that it is also in the present invention.

  Since the non-welded part is on the crease side, when the crease side is accommodated in the container at the time of delivery, the non-welded part is also on the upper side, so that the newspaper does not get dirty due to water accumulated in the bottom of the container.

  According to the present invention, it is possible to obtain a packaging device and a package that can be easily inserted into a newspaper and that can be easily handled.

1 is an external perspective view showing a packaging device 1 according to the present invention. It is a figure which shows the internal structure of the packaging apparatus 1 when it sees from the arrow A direction of FIG. It is a figure which shows the detail of the rear end welding cutting mechanism 8, and is a figure which shows the state which has the welding cutting heater 9 in a standby position. It is a figure which shows the detail of the rear end welding cutting mechanism 8, and is a figure which shows the state which has the welding cutting heater 9 in a welding position. It is a figure which shows the welding operation in 1st control. (A) is a figure which shows typically the positional relationship of the welding cutting heater 9, the side welding heater 20, the newspaper S, and the films F1 and F2 in 1st control, (b) is obtained by 1st control. It is a figure which shows a package. It is a figure which shows the welding operation in 2nd control. (A), (b) is a figure which shows typically the positional relationship of the welding cutting heater 9 and the side welding heater 20, the newspaper S, and the films F1 and F2 in 2nd control, (c) is 2nd It is a figure which shows the package obtained by control. It is a figure which shows the welding operation in 3rd control. (A), (b) is a figure which shows typically the positional relationship of the welding cutting heater 9, the side welding heater 20, the newspaper S, and the films F1, F2 in 3rd control, (c) is this 3rd. It is a figure which shows the package obtained by control of. It is a control block diagram of the packaging apparatus which concerns on this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is an external perspective view showing a packaging device 1 according to the present invention. The newspaper S folded in four is inserted from the insertion opening 2 provided on the upper surface of the packaging device 1 with the final folding side S1 as the head. Then, it is wrapped with a resin film sheet in the machine, and the package is discharged from the lower discharge port 3 and loaded on the stacker 4. An operation panel P that can be operated by the user is provided on the upper surface of the apparatus. The operation panel P is composed of push button switches or a touch panel, and the user can set the operation mode of the apparatus.

  FIG. 2 is a diagram showing an internal configuration of the packaging device 1 when viewed from the direction of arrow A in FIG. A passage 5 is formed so as to guide the newspaper S inserted from the insertion slot 2 downward. One film roll 6, 7 is supported on each side so as to sandwich this passage 5. The film rolls 6 and 7 are formed by winding a long thermoplastic resin film sheet of polyethylene or the like having a predetermined width around a core body. The ends of the films F1 and F2 led out from each of the film rolls 6 and 7 are accommodated in the apparatus in a state where they are welded to each other in advance in the previous welding operation at the leading end welding line F3.

  A rear end welding and cutting mechanism 8 is disposed in the vicinity of the front end welding line F3. 3 and 4 are views showing the details of the rear end welding and cutting mechanism 8. The newspaper S that has descended the passage 5 is further lowered in a state where it is sandwiched between the film F1 and the film F2 by pushing down the tip welding line F3 at its tip. A welding cutting heater 9 and a cradle 10 are provided across the newspaper passage. The welding cutting heater 9 is attached to the moving block 11. The moving block 11 can be reciprocated in the direction of arrow B by a crank mechanism (not shown). By this movement, the welding cutting heater 9 reciprocates between a standby position where the tip 9 a is separated from the cradle 10 and a welding position where the tip reaches the cradle 10. FIG. 3 shows a state where the welding / cutting heater 9 is in the standby position, and FIG. 4 shows a state where the welding / cutting heater 9 is in the welding position.

  The welding / cutting heater 9 is formed to extend in a direction perpendicular to the newspaper moving direction (hereinafter referred to as the width direction) to a length equal to or greater than the width of the film. Therefore, by sandwiching the films F1 and F2 between the tip 9a and the cradle 10, a welding line in which the film F1 and the film F2 are welded over the entire width is formed.

  A shutter 12 is provided on the upstream side of the welding cutting heater 9. The shutter 12 is a plate-like member that is rotatable about a rotation shaft 13 and that extends in the width direction. A pressing member 14 is provided on the back side of the shutter 12. The pressing member 14 is integrally formed with the shaft-shaped support member 15. The support member 15 is inserted through the bracket 16 attached to the moving block 11 so as to be movable in the axial direction. A spring 17 is interposed between the bracket 16 and the pressing member 14.

  When the welding / cutting heater 9 is in the standby position, the stopper 15a provided on the support member 15 is caught by the bracket 16, and the shutter 12 is in a state where the free end side rotates downward under its own weight. When the welding cutting heater 9 moves to the welding position, the bracket 16, the support member 15, and the pressing member 14 move in the same direction together with the welding cutting heater 9, and the pressing member 14 presses the back surface of the shutter 12 and the shutter 12 rotates. When the free end of the shutter 12 contacts the cradle 10, the spring 17 is compressed thereafter. Further, when the welding cutting heater 9 reaches the welding position, the lock member 18 presses the back surface of the shutter 12. With this configuration, the shutter 12 closes the passage of the newspaper during welding and is locked so that it does not open even if it is pushed open, thereby preventing the next newspaper from entering during welding.

  Returning to FIG. A transport belt 19 that transports the newspaper S further downstream is provided on the downstream side of the rear end welding and cutting mechanism 8. A total of two side welding heaters 20 are provided on each side of the conveyor belt 19 in the width direction. The side welding heater 20 is provided so as to extend long along the conveyance direction of the newspaper S. A cradle 21 is provided facing the side welding heater 20 across the newspaper passage, and the side welding heater 20 is located between a standby position separated from the cradle 21 and a welding position in contact with the cradle 21. It can be moved by a drive mechanism (not shown). By sandwiching the films F1 and F2 between the side welding heater 20 and the cradle 21, the films F1 and F2 are welded on both sides of the newspaper S, and a welding line is formed along the newspaper S conveyance direction.

  Sensors P1, P2, and P3 capable of detecting a newspaper passing through the newspaper passage are arranged. The sensor P1 is provided upstream of the welding cutting mechanism 8, the sensor P2 is provided downstream of the welding cutting mechanism 8, and the sensor P3 is provided near the downstream end of the side welding heater 20. Sensors P1, P2 and P3 are optical sensors each composed of a light emitting sensor and a light receiving sensor. Since the films F1 and F2 are transparent, the front end or the rear end of the newspaper S sandwiched between the films F1 and F2 can be detected by these optical sensors.

  Next, the operation of the packaging apparatus of the present invention configured as described above will be described with reference to FIG. The packaging apparatus of the present invention can be selected by the user through the operation panel P to perform either the packaging operation by the first control, the packaging operation by the second control, or the packaging operation by the third control.

  First, an operation when the user selects the first control will be described. The user selects the first control on the operation panel P, and inserts the newspaper S into the packaging apparatus with the final folding side S1 at the top. When the leading end (final folding side S1) of the inserted newspaper S is detected by the sensor P1, the driving of the conveyor belt 19 is started. Further, the newspaper S pushes down the films F1 and F2 in a state where the final folding side S1 substantially coincides with the front end welding line F3 of the films F1 and F2. And it is pinched | interposed between the conveyance belts 19 in the state pinched | interposed with film F1, F2 from the front and back side of the newspaper S1, and is conveyed downstream. When the rear end of the newspaper S1 is detected by the sensor P2, the conveyor belt 19 stops. Thereafter, both the welding cutting heater 9 and the side welding heater 20 move from the standby position to the welding position, and the films F1 and F2 are sandwiched between the cradles 10 and 21 for a predetermined time. Thereafter, only the side welding heater 20 returns to the standby position, and the driving of the conveying belt 19 is resumed. Since the welding cutting heater 9 still holds the films F1 and F2 between the cradle 10 and the films F1 and F2 are cut at that portion. Further, the newspaper S transported by the transport belt 19 is discharged from the discharge port 3 and accumulated in the stacker 4.

  FIG. 5 is a diagram illustrating a state in which the welding cutting heater 9 and the side welding heater 20 are welded with the films F1 and F2 sandwiched between the cradles 10 and 21 in the first control. 6A is a diagram schematically showing the positional relationship between the welding cutting heater 9, the side welding heater 20, the newspaper S, and the films F1 and F2 when viewed from the left side in FIG. ) Is a diagram showing a package obtained by the first control.

  As shown in FIG. 5 and FIG. 6A, the tip welding line F3 is in the range sandwiched between the side welding heaters 20 in the transport direction. Further, the upstream end of the side welding heater 20 and the welding cutting heater 9 are separated from each other. In this state, the films F1 and F2 are welded on the rear end side (upstream side) of the newspaper S by the welding cutting heater 9 to form the rear end welding line F4. At the same time, the side welding lines are formed on both sides of the newspaper by the side welding heater 20. F5 is formed. Thereafter, the conveyance is resumed by the conveyance belt 19, whereby the films F1 and F2 are cut at the rear end welding line F4 (the cut rear end welding line F4 becomes the front end welding line F3 for the newspaper to be inserted next. Become).

  Then, as shown in FIG. 6B, in the obtained package, the side welding line F5 formed on both sides of the newspaper S intersects the front end welding line F3, but the rear end welding line F4. And do not cross. That is, a non-welded portion F6 that is not welded between the upstream end of the side welding line F5 and the rear end welding line F4 is formed on the side facing the front end (final folding side S1) of the newspaper S. A package is obtained.

  Next, an operation when the user selects the second control will be described with reference to FIG. The user selects the second control on the operation panel P, and inserts the newspaper S into the packaging apparatus with the final folding side S1 at the top. When the leading end (final folding side S1) of the inserted newspaper S is detected by the sensor P1, the driving of the conveyor belt 19 is started. Further, the newspaper S pushes down the films F1 and F2 in a state where the final folding side S1 substantially coincides with the front end welding line F3 of the films F1 and F2. And it is pinched | interposed between the conveyance belts 19 in the state pinched | interposed with film F1, F2 from the front and back side of the newspaper S1, and is conveyed downstream. When the rear end of the newspaper S1 is detected by the sensor P2, the conveyor belt 19 stops. Thereafter, only the welding cutting heater 9 moves from the standby position to the welding position, and the first welding is performed in which the films F1 and F2 are sandwiched between the receiving table 10 for a predetermined time. At this stage, the side welding heater 20 is in the standby position. Thereafter, the driving of the conveyor belt 19 is resumed. Since the welding cutting heater 9 still holds the films F1 and F2 between the cradle 10 and the films F1 and F2 are cut at that portion. When the newspaper S is transported by a predetermined amount, the transport belt 19 is stopped again. Then, the side welding heaters 20 both move from the standby position to the welding position, and the second welding is performed in which the films F1 and F2 are sandwiched between the receiving bases 21 for a predetermined time. Thereafter, the side welding heater 20 returns to the standby position, and the driving of the conveyor belt 19 is resumed. The newspaper S is discharged from the discharge port 3 and accumulated in the stacker 4.

  FIG. 7A is a diagram showing a state in which the welding cutting heater 9 sandwiches the films F1 and F2 with the cradle 10 and welds in the first welding of the second control. FIG. 7B is a diagram showing a state in which the side welding heater 20 sandwiches the films F1 and F2 between the receiving base 21 and welds in the second welding of the second control. FIGS. 8A and 8B show the positional relationship between the welding cutting heater 9 and the side welding heater 20, the newspaper S, and the films F1 and F2 when viewed from the left side in FIGS. 7A and 7B. FIG. 8C is a diagram schematically showing a package obtained by the second control.

  As shown in FIGS. 7A and 8A, in the first welding, the films F1 and F2 are welded by the welding cutting heater 9 on the rear end side of the newspaper S, and the rear end welding line F4 is formed. The After the first welding, the driving mechanism (not shown) of the transport belt 19 transports the newspaper S to a position where both the front end welding line F3 and the rear end welding line F4 are within the range between the side welding heaters 20. Then, it is stopped again and the second welding is performed. Accordingly, in the second welding, as shown in FIGS. 7B and 8B, both the front end welding line F3 and the rear end welding line F4 are within the range sandwiched between the side welding heaters 20. In this state, the side welding line 20 is formed on both sides of the newspaper by the side welding heater 20. Thereafter, the conveyance is resumed by the conveyance belt 19, and the package is sent to the discharge port 3.

  Then, as shown in FIG. 8C, in the obtained package, the side welding lines F5 formed on both sides of the newspaper S intersect with both the front end welding line F3 and the rear end welding line F4. . That is, a package in which welding lines are formed along the four sides of the newspaper S without any gaps is obtained.

  Next, an operation when the user selects the third control will be described with reference to FIG. The user selects the third control on the operation panel P, and inserts the newspaper S into the packaging apparatus with the final folding side S1 at the top. When the leading end (final folding side S1) of the inserted newspaper S is detected by the sensor P1, the driving of the conveyor belt 19 is started. Further, the newspaper S pushes down the films F1 and F2 in a state where the final folding side S1 substantially coincides with the front end welding line F3 of the films F1 and F2. And it is pinched | interposed between the conveyance belts 19 in the state pinched | interposed with film F1, F2 from the front and back side of the newspaper S1, and is conveyed downstream. When the rear end of the newspaper S1 is detected by the sensor P2, the conveyor belt 19 stops. Thereafter, only the welding cutting heater 9 moves from the standby position to the welding position, and the first welding is performed in which the films F1 and F2 are sandwiched between the receiving table 10 for a predetermined time. At this stage, the side welding heater 20 is in the standby position. Thereafter, the driving of the conveyor belt 19 is resumed. Since the welding cutting heater 9 still holds the films F1 and F2 between the cradle 10 and the films F1 and F2 are cut at that portion. And after the front-end | tip of the newspaper S is detected by the sensor P3, when the predetermined amount is conveyed, the conveyance belt 19 is stopped again. Then, the side welding heaters 20 both move from the standby position to the welding position, and the second welding is performed in which the films F1 and F2 are sandwiched between the receiving bases 21 for a predetermined time. Thereafter, the side welding heater 20 returns to the standby position, and the driving of the conveyor belt 19 is resumed. The newspaper S is discharged from the discharge port 3 and accumulated in the stacker 4.

  FIG. 9A is a view showing a state in which the welding cutting heater 9 sandwiches the films F1 and F2 with the cradle 10 and welds in the first welding of the third control. FIG. 9B is a diagram showing a state in which the side welding heater 20 sandwiches the films F1 and F2 with the cradle 21 and welds in the second welding of the third control. 10 (a) and 10 (b) show the positional relationship between the welding cutting heater 9 and the side welding heater 20, the newspaper S, and the films F1 and F2 when viewed from the left side in FIGS. 9 (a) and 9 (b). FIG. 10C is a diagram schematically showing a package obtained by the third control.

  As shown in FIGS. 9A and 10A, in the first welding, the films F1 and F2 are welded by the welding cutting heater 9 on the rear end side of the newspaper S, and the rear end welding line F4 is formed. The After the first welding, the drive mechanism (not shown) of the transport belt 19 transports the newspaper S to a position downstream of the range where the tip welding line F3 is sandwiched between the side welding heaters 20 and stops again. And performing the second welding. Specifically, after the first welding, the driving of the conveying belt 19 is started, and after the leading edge of the newspaper S is detected by the sensor P3, the predetermined amount is conveyed and stopped. Therefore, in the second welding, as shown in FIG. 9B and FIG. 10B, the rear end welding line F4 is within the range sandwiched between the side welding heaters 20 in the conveying direction, but the front end welding line. F3 is on the downstream side of the range sandwiched between the side welding heaters 20. In this state, the side welding line 20 is formed on both sides of the newspaper by the side welding heater 20. Thereafter, the conveyance is resumed by the conveyance belt 19, and the package is sent to the discharge port 3.

  Then, as shown in FIG. 10 (c), in the package to be obtained, the side welding line F5 formed on both sides of the newspaper S intersects with the rear end welding line F4, but the front end welding line F3. And do not cross. That is, a package in which a non-welded portion F7 that is not welded between the downstream end of the side welding line F5 and the tip welding line F3 is formed on the front end of the newspaper S = the final folding side S1 is obtained.

  According to the third control, when the newspaper S is inserted into the packaging apparatus with the final folding side S1 at the top, the non-welded portion F7 of the obtained package is formed on both sides on the final folding side S1 side. It will be. Therefore, when the package is stored in the container with the final folding side S1 protruding upward at the time of delivery, the non-welded portion F7 is formed at the upper end, so that water has accumulated at the bottom of the container. But the newspaper never gets wet. Moreover, since the final folding side S1 is inserted at the top, it is easy to insert a newspaper.

  FIG. 11 is a control block diagram of the packaging device according to the embodiment. The control unit 100 includes a CPU that executes various arithmetic processes, a ROM that stores various control programs, and a RAM that is used as a work area for data storage and program execution. Sensors P1, P2, and P3 are connected to the control unit 100 so that the respective detection results can be input. The operation panel P accepts the user's selection as to which of the first to third controls is performed, transmits the mode selected by the user to the control unit 100, and the control unit 100 stores this. In accordance with the stored mode and the input signal from each sensor, the control unit 100 moves the welding cutting heater 9 between the standby position and the welding position, and sets the side welding heater 20 to the standby position and the welding position. The driving motor M2 is moved between the driving motor M2 and the driving motor M3 is rotated so as to rotate or stop the conveying belt 19. The drive system of the conveyor belt 19 is provided with index means (not shown) capable of measuring the conveyance amount of the conveyor belt 19. This index means is provided on a shaft that supports the pulley around which the conveyor belt 19 is hung and to which the driving force of the conveyor drive motor M3 is applied. Specifically, a disc having a plurality of openings arranged in a circumferential direction at a predetermined pitch supported by the shaft and an index sensor (optical sensor) capable of detecting the openings are provided. The conveyance amount is detected by counting as one pulse per opening detected by the index sensor. During the second welding in the third control, the sensor P3 detects the leading edge S1 of the newspaper S, and then stops after a predetermined number of pulses, thereby stopping the newspaper S at the position where the second welding is performed.

  The present invention is not limited to the above-described embodiment, and various modifications such as design changes can be added to each embodiment based on the knowledge of those skilled in the art, and such a modification has been added. Embodiments may also be included within the scope of the present invention.

  For example, in the first welding of the second control, the welding by the side welding heater 20 may be performed simultaneously with the welding by the welding cutting heater 9. Then, in the first welding, as in the first control, a non-welding portion is formed in a portion corresponding to the gap between the welding cutting heater 9 and the side welding heater 20, and this non-welding portion is the second welding. As a result, it is possible to obtain a package that is welded without gaps on all sides of the newspaper S. Further, in this case, since the side welding line F5 is already formed near the downstream side of the newspaper S in the first welding, the second welding is performed after the tip welding line F3 is conveyed to the downstream side of the side welding heater 20. Even if it performs, the package by which all sides were welded without gap can be obtained.

  In the present embodiment, in the first control, the side welding line F5 and the rear end welding line F4 are formed at the same time, but this is divided into two times, and the side welding line is formed in the first welding. It may be controlled so that F5 is formed, and then a predetermined amount is conveyed and stopped again, and the rear end welding line F4 is formed by the second welding. In this way, the length corresponding to the gap between the side welding heater 20 and the welding cutting heater 9 is added to the length corresponding to the conveyance amount conveyed between the first welding and the second welding. In addition, the non-welded portion F6 is formed.

  Moreover, in the said embodiment, although the sensor P3 is arrange | positioned in the conveyance direction in the downstream end of the side welding heater 20, it is not restricted to this structure. For example, when the sensor P3 is disposed on the downstream side of the side welding heater 20 and the conveyance is resumed after the first welding, the sensor P3 may stop immediately when the leading edge of the newspaper S is detected and perform the second welding. Further, when the sensor P3 is arranged on the upstream side of the side welding heater 20 and the conveyance is resumed after the first welding, the front welding line F3 is downstream of the side welding heater 20 after the sensor P3 detects the leading edge of the newspaper S. The second welding may be performed by stopping at a timing when the sheet is conveyed downstream by a predetermined distance from the end on the side. In any case, since the detection of the leading edge of the newspaper S that is transported substantially coincident with the leading edge welding line F3 is used as a trigger, it is stopped again even if the size of the newspaper S changes. The welding part F6 can be formed.

  Furthermore, the first to third controls are not necessarily selectable. That is, the third control may be performed so that the non-welded portion is positioned upward when it is accommodated in the container so that the final folding side protrudes upward during delivery. Therefore, the first and third controls may be selectable, and the second and third controls may be selectable. Moreover, the packaging apparatus which only 3rd control can perform may be sufficient.

  Moreover, although it is a packaging apparatus which wraps while feeding a newspaper from upper direction and conveying it downward in the said embodiment, it is not restricted to this structure. For example, the present invention can also be applied to a packaging apparatus in which a newspaper is inserted from the side of the apparatus and packaged while being conveyed in the horizontal direction.

  Needless to say, the present invention can be applied not only to newspapers but also to all sorts of sheet shapes such as bundles of insert advertisements, booklets, and a single sheet of paper.

   DESCRIPTION OF SYMBOLS 1 Packing apparatus, 2 Insertion port, 3 Discharge port, 6 Film roll, 7 Film roll, 8 Back end welding cutting mechanism, 9 Welding cutting heater, 19 Conveyance belt, 20 Side welding heater, S newspaper, S1 Final folding edge, F1 Film, F2 film, F3 leading edge welding line, F4 trailing edge welding line, F5 side welding line

Claims (4)

Resin films on both sides of the object to be packaged are transported by sandwiching and transporting a flat and rectangular object to be packaged inserted between two resin film sheets whose ends are welded in advance. A unit in which welding lines are formed on the front end side, rear end side, and both sides of the packaged product by welding the films on the rear end side of the packaged product and cutting the portions together while thermally welding each other. A packaging device for creating a package,
A welding cutting heater that comes into contact with the resin film on the rear end side of the article to be packaged, and welds and cuts the resin film sheets with each other;
A pair of side welds that are provided at a predetermined interval from the downstream side of the package-carrying material transport direction of the welding cutting heater, abut against the resin films on both sides of the package, and weld the resin film sheets to each other at the portions. A heater,
The article to be packaged inserted from the upstream side of the welding cutting heater, the conveying means for conveying the resin film sheet on the front and back sides, and
First insertion is performed in which the inserted article to be packaged is stopped at a position where it has passed the welding cutting heater, the rear end welding cutting heater is brought into contact with the resin film sheet, and the resin film sheets are welded together at the contact portion. After that, the conveyance is resumed, and the side welding heater is stopped again at a position where the welding line on the rear end side is within the contact range of the side welding heater and the welding line on the front end side is downstream of the side welding heater. A packaging device comprising: a control unit configured to contact the resin film sheet, perform a second welding in which the resin film sheets are welded to each other at the contact portion, and then resume conveyance. The sensor is provided on the downstream side of the front end of the article to be packaged that is stopped during the first welding, and can detect the article to be conveyed,
The control means controls to stop the conveyance immediately after the sensor detects the leading edge of the package after the first welding, or to stop the conveyance after a predetermined time and perform the second welding. The packaging device according to claim 1. After the inserted article to be packaged is stopped at the position where it has passed the welding cutting heater, the side welding heater and the rear end welding cutting heater are brought into contact with the resin film sheet, and the resin film sheets are welded to each other at the contact portion. First control for controlling to resume conveyance;
The inserted article to be packaged is stopped at a position where it passes through the welding cutting heater, the rear end welding cutting heater is brought into contact with the resin film sheet, and the resin film sheets are welded to each other at the contact portion, and then the conveyance is resumed. The welding line on the front end side and the rear end side are stopped again at a position where they enter the contact range of the side welding heater, the side welding heater is brought into contact with the resin film sheet, and the resin film sheets are welded at the contact portion. And / or a second control that controls to resume the conveyance, and a selection means that allows the user to select either one of the control and the control according to claim 1. Have
The packaging device according to claim 1 or 2, wherein the control means executes the control selected by the selection means. It is a package in which a front and back sides of a newspaper folded in four are sandwiched between resin film sheets, and a welding line is formed in which two resin film sheets are welded along the four edges,
The end of the welding line along both sides orthogonal to the final fold side of the newspaper is closer to the final crease side of the newspaper, away from the welding line along the final fold of the newspaper, and a non-welded part is formed between them. Package characterized by being made.

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