JP6531324B2 - Packaging apparatus and packaging method - Google Patents

Description

  In the present invention, a packaging apparatus for sandwiching the front and back of a flat rectangular package with resin film sheets and welding the resin film sheets together on the four sides around the package, and packaging the newspaper with the packaging apparatus It relates to a package wrapped in a sheet.

An apparatus for covering with a resin film sheet such as polyethylene is used in a newspaper store so that the newspaper to be delivered is not wet in the rain. For example, in the apparatus described in Patent Document 1, the front end of a resin film sheet fed out from two rolls wound with a long resin film sheet is welded in advance by the previous welding operation to form a front end welding line In the device. When a newspaper is inserted into the apparatus, the newspaper is conveyed by being pinched 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 substantially coincide with each other. Thereafter, the paper is once stopped at a predetermined position, and the rear end side of the newspaper is welded by a welding / cutting device to form a rear end welding line, and both sides are welded by a side welding device to form a side welding line. Further, by resuming the transport, the film is cut at the rear end welding line, and as a result, a packed 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 next inserted newspaper.
In the device of this patent document 1, there is a gap between the end of the side welding device on the upstream side (hereinafter simply referred to as the upstream side) of the newspaper transport direction of the side welding device and the trailing edge welding device. A non-welded portion not welded is formed. For this reason, after welding is performed by this welding cutting device and the side welding device, it is conveyed and stopped only for a short time, and the non welding portion can be eliminated and completely sealed by operating the side welding device again. It is supposed to be.
Both the operation of obtaining this completely sealed package and the operation of obtaining a package with the non-welded portion on the upstream side of the side welding line are possible. While the completely sealed package can completely prevent the newspaper from getting wet, it can not release the air in the enclosed space after packaging, so the carrying ability at delivery becomes worse at the time of delivery. Therefore, it is possible to completely deflate and seal the package before packaging, or to leave a non-welding portion and be careful not to allow rainwater to enter from there, or any other usage.

Unexamined-Japanese-Patent No. 2003-285801 (Paragraph [0040]-[0053] etc.)

  By the way, a newspaper inserted into such a packaging device is folded in four and delivered to a newspaper store. In a newspaper store, after inserting a folding advertisement inside the final fold of the four folds, film packaging is performed. When inserting the newspaper into the packaging apparatus, the four-folded final folding side is inserted first. Therefore, when packaged so as to leave a non-welded portion, the non-welded portion is formed at the open end of the newspaper.

  However, in order to make it easy to take out the newspaper from the container or the like provided on the delivery motorcycle or the like at the time of delivery, the newspaper may be accommodated in the container so that the final folding side may protrude upward. The non-welded portion would then be located at the bottom of the container. However, when it rains, water may be accumulated at the bottom of the container, and the water may intrude from the non-welding portion to wet the newspaper.

  If it inserts in the packaging device with the opposite side of the final folding side, that is, the open side at the top, a non-welded part will be formed on the final folding side, but the thin edge of the protruding advertisement will be at the top. By pushing in, the tip of the advertisement may be bent. In addition, the open side is more easily bent than the final folded side, which makes it difficult to insert the device into the apparatus.

  The present invention has been made in view of such problems, and it is an object of the present invention to provide a packaging device and a package which are easy to insert a newspaper and which can be handled easily.

  In order to solve the above problems, a packaging apparatus according to a first aspect of the present invention is a flat rectangular-shaped package which is inserted between two resin film sheets in which tips are welded in advance. While sandwiching and conveying between resin film sheets, the resin films on both sides of the packaged material are heat welded, and the films on the rear end side of the packaged material are welded and the portion is cut to A packaging apparatus for producing a unit package in which welding lines are respectively formed on the front end side, the rear end side and both sides of the package, wherein the resin film abuts on the resin film on the rear end side of the package A welding cutting heater for welding and cutting the sheets, and a position separated by a predetermined distance from the downstream side of the package conveyance direction of the welding cutting heater, and abut against resin films on both sides of the packing material. Resin fill A pair of side welding heaters for welding the sheets together, a packaged object inserted from the upstream side of the welding cutting heater, a transport means for transporting the resin film sheet on the front and back sides, and the packaged objects inserted The product is stopped at the position where it passed through the welding and cutting heater, and the rear end welding and cutting heater is made to abut on the resin film sheet, and the resin film sheets are welded together at the abutting part. 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 stopped again at the position where the welding line on the front side becomes the downstream side of the side welding heater. The package is characterized in that it is brought into contact and the second welding is performed to weld the resin film sheets to each other at the contact portion, and then control is carried out so as to restart the transportation. It is the location.

  According to the first aspect, the side welding line is not formed in the vicinity of the welding line on the front end side because the welding line on the front end side is stopped at the position downstream of the side welding heater to weld the side. A non-welded part is formed. Since this non-welded part is on the front end side, that is, on the final folding side of the newspaper, there is an advantage that a package which is not wetted by rain can be obtained even when the final folding side is loaded upward at the time of delivery.

  It has a sensor which is provided on the downstream side of the tip of the package which is stopped at the first welding and which can detect the package to be transported, and the control means transports after the first welding. After resuming, it may be controlled so that the conveyance is stopped immediately or after a predetermined time after the sensor detects the front end of the package, and the second welding is performed. Since the stop position at which the second welding is performed is determined based on the front end of the package, the non-welded portion can be stably formed without being affected by the size of the package.

  Stop after the inserted package passes through the welding / cutting heater, bring the side welding heater and the rear end welding / cutting heater into contact with the resin film sheet, and weld the resin film sheets together at the contact part A first control for controlling conveyance resumption, stopping at a position where the inserted package passes through the welding / cutting heater, bringing the rear end welding / cutting heater into contact with the resin film sheet, and the abutment portion After welding the resin film sheets together, transport is restarted, and the welding lines on the front end and the rear end both stop again at a position where they fall within the contact range of the side welding heater, and the side welding heater is pressed against the resin film sheet. In the first aspect of the second aspect of the invention, in which the resin film sheets are welded to each other and welded to each other at the contact portion, and one or both of the second control in which conveyance is controlled to restart 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 crease side of the newspaper, the non-welded portion is formed on the opposite side, or the non-welded portion on the opposite side, depending on the user's actual handling of the package. Various types of packages can be obtained, such as complete sealing by eliminating welds.

  A package in which a welding line is formed by sandwiching front and back sides of a four-folded newspaper with resin film sheets, and along the four sides of which two resin film sheets are welded,

  The end of the welding line along the sides perpendicular to the final crease side of the newspaper, which is close to the final crease side of the newspaper, is separated from the welding line along the final crease of the newspaper, and a non-welded part is formed therebetween A package characterized in that it is also the present invention.

  Since the non-welded portion is on the fold side, when the fold side is accommodated upward in the container at the time of delivery, the non-welded portion is also on the upper side, so that the newspaper is not soiled by water etc. accumulated on the bottom of the container.

  ADVANTAGE OF THE INVENTION According to this invention, it is easy to insert a newspaper, and it is effective in the packaging apparatus and package of the handleability of the obtained package being able to be obtained.

It is an appearance perspective view showing packaging device 1 concerning 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 back end welding cutting mechanism 8, and is a figure which shows the state which the welding cutting heater 9 exists in a waiting | standby position. It is a figure which shows the detail of the back end welding cutting mechanism 8, and is a figure which shows the state in which the welding cutting heater 9 exists in a welding position. It is a figure showing welding operation in the 1st control. (A) is a figure which shows typically the positional relationship of the welding cutting heater 9, side welding heater 20, newspaper S, film F1, F2 in 1st control, (b) is obtained by 1st control It is a figure which shows a package. It is a figure showing welding operation in the 2nd control. (A), (b) is a figure which shows typically the positional relationship of the welding cutting heater 9, the side welding heater 20, newspaper S, film F1, F2 in 2nd control, (c) is the 2nd It is a figure which shows the package obtained by control. It is a figure showing welding operation in the 3rd control. (A), (b) is a figure which shows typically the positional relationship of the welding cutting heater 9, the side welding heater 20, newspaper S, film 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 a packaging device concerning the present 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 apparatus 1 according to the present invention. From the insertion slot 2 provided on the upper surface of the packaging device 1, the four-folded newspaper S is inserted with the final folding side S1 at the top. Then, it is packaged by a resin film sheet inside the machine, and the package is discharged from the lower outlet 3 and stacked on the stacker 4. An operation panel P operable by the user is provided on the upper surface of the apparatus. The operation panel P is composed of push button switches, a touch panel or the like so that the user can set the operation mode etc. of the apparatus.

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

  The rear end welding / cutting mechanism 8 is disposed in the vicinity of the formation of the front end welding line F3. 3 and 4 show the details of the rear end welding / cutting mechanism 8. The newspaper S which has descended the passage 5 is further descended in a state of being pinched by the film F1 and the film F2 from the front and back by pressing the tip welding line F3 at its tip. A welding / cutting heater 9 and a pedestal 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 the standby position where the tip end 9 a thereof is separated from the pedestal 10 and the welding position where the tip end reaches the pedestal 10. FIG. 3 shows the welding cutting heater 9 in the standby position, and FIG. 4 shows the welding cutting position.

  The welding and cutting heater 9 is formed to extend in a direction (hereinafter referred to as the width direction) orthogonal to the newspaper movement 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 pedestal 10, a welding line in which the film F1 and the film F2 are welded across the entire width is formed.

  A shutter 12 is provided upstream of the welding cutting heater 9. The shutter 12 is a plate-like member which is rotatable around a pivot shaft 13 and 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 axially movably inserted through the bracket 16 attached to the moving block 11. 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 hooked on the bracket 16, and the shutter 12 is in a state where the free end side is pivoted downward by 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 along with the welding / cutting heater 9 in the same direction, and the pressing member 14 pushes the back of the shutter 12 to rotate the shutter 12. Then, 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 as not to open even if it is pushed open, so that the next newspaper is prevented from entering during welding.

  Return to FIG. On the downstream side of the rear end welding / cutting mechanism 8, a transport belt 19 for transporting the newspaper S further downstream is provided. A total of two side welding heaters 20 are provided, one on each side of the transport belt 19 in the width direction. The side welding heater 20 is provided to extend long along the conveyance direction of the newspaper S. A pedestal 21 is provided opposite to the side welding heater 20 across the newspaper passage, and the side welding heater 20 is provided between a standby position separated from the pedestal 21 and a welding position in contact with the pedestal 21, It is movable by a drive mechanism (not shown). By sandwiching the films F1 and F2 by the side welding heater 20 and the holder 21, the film F1 and the film F2 are welded on both sides of the newspaper S, and a welding line along the newspaper S conveyance direction is formed.

  Sensors P1, P2 and P3 capable of detecting a newspaper passing through the newspaper passage are disposed. A sensor P1 is provided upstream of the welding / cutting mechanism 8, a sensor P2 is provided downstream of the welding / cutting mechanism 8, and a sensor P3 is provided near the downstream end of the side welding heater 20. The sensors P1, P2 and P3 are optical sensors each composed of a light emission sensor and a light reception 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 thus configured 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, which of the packaging operation by the first control, the packaging operation by the second control, and the packaging operation by the third control is performed.

  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 device with the final folding edge S1 at the top. When the leading end (final folded side S1) of the inserted newspaper S is detected by the sensor P1, the driving of the transport belt 19 is started. Furthermore, the newspaper S pushes down the films F1 and F2 with the final folding side S1 substantially coinciding with the end welding line F3 of the films F1 and F2. Then, it is sandwiched between the transport belts 19 in a state of being sandwiched by the films F1 and F2 from the front and back sides of the newspaper S1, and is transported downstream. When the rear end of the newspaper S1 is detected by the sensor P2, the transport belt 19 is stopped. Thereafter, the welding / cutting heater 9 and the side welding heater 20 both move from the standby position to the welding position, and weld the films F1 and F2 between the pedestals 10 and 21 for a predetermined time for welding. Thereafter, only the side welding heater 20 is returned to the standby position, and the driving of the conveyance belt 19 is restarted. Since the welding cutting heater 9 holds the films F1 and F2 with the pedestal 10, the films F1 and F2 are cut at that portion. Further, the newspaper S conveyed by the conveyance belt 19 is discharged from the discharge port 3 and accumulated in the stacker 4.

  FIG. 5 is a view showing a state in which the welding cutting heater 9 and the side welding heater 20 sandwich and weld the films F1 and F2 with the pedestals 10 and 21 in the first control. FIG. 6 (a) is a view schematically showing 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 FIG. ) Is a figure which shows the package obtained by this 1st control.

  As shown to FIG. 5, FIG. 6 (a), the front-end | tip welding line F3 exists in the range pinched by the side welding heater 20 in a conveyance 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, and at the same time, the side welding heater 20 performs side welding lines on both sides of the newspaper. F5 is formed. Thereafter, the transport is resumed by the transport belt 19 so that the films F1 and F2 are cut at the rear end welding line F4 (the rear end welding line F4 cut is at the front end welding line F3 for the next inserted newspaper) Become).

  Then, as shown in FIG. 6 (b), in the resulting package, the side welding lines F5 formed on both sides of the newspaper S intersect with the front end welding line F3, but the rear welding line F4 And does not intersect. That is, a non-welded portion F6 not welded is formed between the upstream end of the side welding line F5 and the rear end welding line F4 on the side opposite to the front end (final folding side S1) of the newspaper S A package is obtained.

  Next, the 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 device with the final folding edge S1 at the top. When the leading end (final folded side S1) of the inserted newspaper S is detected by the sensor P1, the driving of the transport belt 19 is started. Furthermore, the newspaper S pushes down the films F1 and F2 with the final folding side S1 substantially coinciding with the end welding line F3 of the films F1 and F2. Then, it is sandwiched between the transport belts 19 in a state of being sandwiched by the films F1 and F2 from the front and back sides of the newspaper S1, and is transported downstream. When the rear end of the newspaper S1 is detected by the sensor P2, the transport belt 19 is stopped. Thereafter, only the welding / cutting heater 9 is moved from the standby position to the welding position, and the first welding is performed in which the films F1 and F2 are welded between the receiving table 10 for a predetermined time for welding. At this stage, the side welding heater 20 is in the standby position. Thereafter, the drive of the transport belt 19 is resumed. Since the welding cutting heater 9 holds the films F1 and F2 with the pedestal 10, the films F1 and F2 are cut at that portion. Then, 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 welded between the receiving table 21 for a predetermined time for welding. Thereafter, the side welding heater 20 returns to the standby position, and restarts the driving of the transport belt 19. The newspaper S is discharged from the discharge port 3 and accumulated in the stacker 4.

  FIG. 7A is a view showing a state in which the welding / cutting heater 9 sandwiches the films F1 and F2 with the pedestal 10 and welds them in the first welding of the second control. FIG. 7B is a view showing a state in which the side welding heater 20 sandwiches the films F1 and F2 with the pedestal 21 and is welded in the second welding of the second control. 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, respectively. It is a figure shown typically and FIG.8 (c) is a figure which shows the package obtained by this 2nd 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. Ru. After the first welding, the drive mechanism (not shown) of the conveyor belt 19 conveys the newspaper S to a position where the leading welding line F3 and the trailing welding line F4 are both in a range sandwiched by the side welding heaters 20. Stop again and perform the second welding. Therefore, 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 in a range where they are sandwiched by the side welding heaters 20. In this state, a side welding line F5 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 package obtained, the side welding lines F5 formed on both sides of the newspaper S intersect with both the front welding line F3 and the rear welding line F4. . That is, a package in which welding lines are formed without gaps along the four sides of newspaper S is obtained.

  Next, the 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 device with the final folding edge S1 at the top. When the leading end (final folded side S1) of the inserted newspaper S is detected by the sensor P1, the driving of the transport belt 19 is started. Furthermore, the newspaper S pushes down the films F1 and F2 with the final folding side S1 substantially coinciding with the end welding line F3 of the films F1 and F2. Then, it is sandwiched between the transport belts 19 in a state of being sandwiched by the films F1 and F2 from the front and back sides of the newspaper S1, and is transported downstream. When the rear end of the newspaper S1 is detected by the sensor P2, the transport belt 19 is stopped. Thereafter, only the welding / cutting heater 9 is moved from the standby position to the welding position, and the first welding is performed in which the films F1 and F2 are welded between the receiving table 10 for a predetermined time for welding. At this stage, the side welding heater 20 is in the standby position. Thereafter, the drive of the transport belt 19 is resumed. Since the welding cutting heater 9 holds the films F1 and F2 with the pedestal 10, the films F1 and F2 are cut at that portion. Then, after the leading edge of the newspaper S is detected by the sensor P3, the transport belt 19 is stopped again when it is transported by a predetermined amount. 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 welded between the receiving table 21 for a predetermined time for welding. Thereafter, the side welding heater 20 returns to the standby position, and restarts the driving of the transport belt 19. 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 pedestal 10 and welds them in the first welding of the third control. FIG. 9B is a view showing a state in which the side welding heater 20 sandwiches the films F1 and F2 with the pedestal 21 and is welded 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), respectively. It is a figure shown typically, FIG.10 (c) is a figure which shows the package obtained by this 3rd 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. Ru. After the first welding, the drive mechanism (not shown) of the conveyance belt 19 conveys the newspaper S to a position downstream of the range where the leading end welding line F3 is sandwiched by the side welding heaters 20 and stops again. And perform the second welding. Specifically, after the first welding, the drive of the transport belt 19 is started, and after the leading end of the newspaper S is detected by the sensor P3, it is transported by a predetermined amount and stopped. Therefore, as shown in FIGS. 9 (b) and 10 (b) in the second welding, the rear end welding line F4 is within the range between the side welding heaters 20 in the transport direction, but the front end welding line F3 is on the downstream side of the range sandwiched by the side welding heaters 20. In this state, a side welding line F5 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. 10C, in the package obtained, the side welding lines F5 formed on both sides of the newspaper S intersect the rear welding line F4, but the front welding line F3 And does not intersect. That is, a package having a non-welded part F7 not welded between the downstream end of the side welding line F5 and the front welding line F3 is obtained on the front end of the newspaper S = the final folding side S1 side.

  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 parts F7 of the obtained package are 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 folded side S1 protruding upward at the time of delivery, the non-welded portion F7 is formed at the upper end, so water is accumulated at the bottom of the container Even the newspaper never gets wet. Moreover, since the final folding side S1 is at the top, the newspaper can be easily inserted.

  FIG. 11 is a control block diagram of the packaging device according to the embodiment. The control unit 100 has a CPU that executes various arithmetic processing, 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 detection results can be input. Further, in the operation panel P, which of the first to third controls is to be performed, the user's selection is accepted, the mode selected by the user is transmitted to the control unit 100, and the control unit 100 stores this. The control unit 100 causes the drive motor M1 to move the welding / cutting heater 9 between the standby position and the welding position and the side welding heater 20 according to the stored mode and the welding position according to the input signal from each sensor. The drive motor M2 for moving between them and the drive motor M3 for rotating or stopping the transport belt 19 are respectively controlled. The drive system of the transport belt 19 is provided with index means (not shown) capable of measuring the transport amount of the transport belt 19. This index means supports the pulley on which the conveyance belt 19 is hung, and is provided on the shaft to which the driving force of the conveyance drive motor M3 is applied. Specifically, a disk is provided with a plurality of openings arranged in the circumferential direction at a predetermined pitch supported by the shaft, and an index sensor (optical sensor) capable of detecting the openings. The transport amount is detected by counting one pulse per opening detected by the index sensor. At the time of the second welding in the third control, the sensor P3 detects the tip S1 of the newspaper S, and then stops the newspaper S at the position where the second welding is to be performed by stopping after the predetermined pulse count.

  The present invention is not limited to the above 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 modifications are added. Embodiments can also be included within the scope of the present invention.

  For example, in the first welding of the second control, welding by the side welding heater 20 may be performed simultaneously with welding by the welding cutting heater 9. Then, in the first welding, as in the first control, a non-welded portion is formed in the portion corresponding to the gap between the welding cutting heater 9 and the side welding heater 20, but this non-welded portion is the second welding Because the sheets S are welded, the packages welded without gaps in the four sides of the newspaper S can be obtained. Further, in this case, since the side welding line F5 is already formed on the downstream side of the newspaper S in the first welding, the second welding is performed after the tip welding line F3 is transported to the downstream side of the side welding heater 20. Even if it does, the package which four sides welded without gap can be obtained.

  Further, in the present embodiment, in the first control, the formation of the side welding line F5 and the formation of the rear end welding line F4 are simultaneously performed, but this is divided into two times, and the side welding line is formed by the first welding. F5 may be formed, conveyed by a predetermined amount and then stopped again, and control may be performed to form the rear end welding line F4 in 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 the length obtained by adding the length of the transport amount transported 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 substantially the same position as 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 transport is resumed after the first welding, the sensor P3 may immediately stop when the leading end of the newspaper S is detected and perform the second welding. Further, when the sensor P3 is disposed upstream of the side welding heater 20 and transport 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 front end of the newspaper S. The second welding may be performed by stopping at a timing at which the sheet is conveyed to the downstream side by a predetermined distance from the side end. In any case, since the detection of the leading end of the newspaper S being conveyed substantially coincides with the leading end welding line F3 is used as a trigger to stop again, even if the size of the newspaper S changes, non-uniform size non-uniform The welded portion F6 can be formed.

  Furthermore, the first to third controls are not limited to all selectable. That is, the third control may be performed to position the non-welding portion upward when the container is accommodated in the container so that the final folding edge protrudes upward at the time of delivery. Therefore, the first and third controls may be selectable, and the second and third controls may be selectable. Moreover, the packaging apparatus which can perform only 3rd control may be sufficient.

  Moreover, in the said embodiment, although it is a packaging apparatus which packages, inserting a newspaper from upper direction and conveying below, it is not restricted to this structure. For example, the present invention is also applicable to a packaging apparatus which inserts a newspaper from the side of the apparatus and packs it while conveying it in the horizontal direction.

  Needless to say, it is possible to package not only newspaper but also all kinds of sheet shapes such as a bundle of folded advertisements, a booklet, a sheet of one sheet, etc., which can be applied to the packaging device of the present invention.

   DESCRIPTION OF SYMBOLS 1 Packaging device, 2 insertion port, 3 discharge port, 6 film roll, 7 film roll, 8 rear end welding cutting mechanism, 9 welding cutting heater, 19 conveyance belt, 20 side welding heater, S newspaper, S1 final folding side, F1 Film, F2 film, F3 front end welding line, F4 rear end welding line, F5 side welding line

Claims (4)

The resin film on both sides of the package is conveyed while sandwiching the flat and rectangular package, which is inserted in advance between two resin film sheets having their tips welded together, between the resin film sheets. By welding the sheets together and welding the film sheets on the rear end side of the packaged object and cutting off the portion, welding lines are formed respectively on the front end side, the rear end side and both sides of the packaged object A packaging device for producing a unit package,
A welding cutting heater which abuts on the resin film sheet on the rear end side of the packaged object and welds and cuts the resin film sheets at that portion;
A pair of sides which are provided at a predetermined distance from the downstream side of the package cutting direction of the welding / cutting heater and are in contact with the resin film sheets on both sides of the package to weld the resin film sheets together at that part. Welding heater,
A package inserted from the upstream side of the welding / cutting heater, and a transport means for transporting the resin film sheet in a state of being superimposed on the front and back sides thereof;
The inserted package is stopped at a position passing through the welding / cutting heater, and only the welding / cutting heater of the welding / cutting heater and the side welding heater is brought into contact with the resin film sheet, and the resin film sheet The first welding is performed to weld the parts together, and then transport is resumed, and 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 on the downstream side of the side welding heater Control means to stop the side welding heater again and abut the resin film sheet to the resin film sheet, perform welding for the second time to weld the resin film sheets together at the abutted part, and then control to restart transportation Packaging device characterized by. It has a sensor which is provided on the downstream side of the tip of the package which is stopped at the first welding and which can detect the package to be transported,
The control means is controlled to perform the second welding by stopping the conveyance immediately or after a predetermined time after the sensor detects the leading end of the packaged object after the conveyance restarts after the first welding. The packaging apparatus according to claim 1, characterized in that The inserted package is stopped at the position where it passes through the welding and cutting heater, the side welding heater and the welding and cutting heater are brought into contact with the resin film sheet, and the resin film sheets are welded at the contact portion, and then transported. A first control to control to resume;
The inserted package is stopped at a position where it has passed through the welding and cutting heater, and the welding and cutting heater is brought into contact with the resin film sheet, and the resin film sheets are welded together at the contact portion, and then the transport is restarted. The welding lines on both sides and the rear end side are stopped again at a position where they fall within the contact range of the side weld heater, the side weld heater is brought into contact with the resin film sheet, and the resin film sheets are welded together at the contact part And a second control to control to resume transport
The inserted package is stopped at a position passing through the welding / cutting heater, and only the welding / cutting heater of the welding / cutting heater and the side welding heater is brought into contact with the resin film sheet, and the resin film sheet The first welding is performed to weld the parts together, and then transport is resumed, and 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 on the downstream side of the side welding heater The second welding that welds the resin film sheets to each other by stopping the side welding heater on the resin film sheet, stopping the side welding heater again is performed, and then the transportation is restarted. , Having a selection means which can be selected by the user alternatively
The packaging apparatus according to claim 1 or 2, wherein the control means executes the control selected by the selection means . Step of stopping at the packaged product pre Me distal ends is inserted between the two resin film sheets which are welded conveyed, passing through the weld cutting heater extending in a direction perpendicular to the conveying direction position,
Of the welding cutting heater and the side welding heater extending parallel to the transport direction on both sides of the packaged object, only the welding cutting heater is brought into contact with the resin film sheet, and the resin film sheets Heat welding to form a welding line on the rear end side,
The conveyance of the package is resumed and cut along the welding line on the rear end side, and 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 the side welding heater Stopping again at a position downstream of the
A side welding heater is brought into contact with the resin film sheet, and the resin film sheets are thermally welded on both sides of the packaged object, leaving a non-welding portion on the tip side to form welding lines on both sides.
Resuming transport of the package and discharging it;
Packaging method characterized by passing through.

Images