JP4453861B2 - Packaging equipment - Google Patents

Description

  The present invention relates to a packaging device for packaging an article with a synthetic resin film or sheet, and in particular, a sheet, booklet, newspaper or similar paper sheet is wrapped with a synthetic resin film such as polyethylene, and an open end is welded and cut. The present invention relates to a packaging device for hermetically coating.

  Various devices have already been used as devices for covering an article with a heat-sealable film such as a polyethylene film and heat-sealing the edge of the film for packaging. In such a packaging apparatus, there is a vertical packaging apparatus that performs packaging while inserting an article from above and transporting the article downward. Since this vertical packaging device performs packaging while dropping or transporting an article to be packaged in the vertical direction, it has the advantage of reducing the installation floor area. A conventional example of such a vertical packaging apparatus will be described with reference to FIG.

  FIG. 22 is a front view showing the conventional packaging device 100.

  As shown in FIG. 22, this conventional packaging device 100 is formed by a packaging machine body 101 made of a vertically long box. In the center of the upper surface of the main body 101, an insertion slot 105 is provided through which four folded newspapers P can be dropped vertically. In the upper part of the packaging machine main body 101, two film supply means for supplying the strip-shaped film F so as to sandwich both sides of the dropped newspaper P are provided, and below the first feed table 113 and the second feed A table 114 is provided continuously in the vertical direction. Further, an opening / closing guide member 115 is provided facing the first feed table 113, and a feed presser member 116 is provided facing the second feed table. A pair of first sensors 154 are provided near the upper part of the first feed table 113, and a pair of second sensors 155 are provided near the lower part, so that the newspaper P can be detected.

  The film F is wound in a roll shape and is rotatably supported. The film F drawn from the roll is supplied so as to be overlapped between the first feed table 113 and the opening / closing guide member 115. In addition, an insertion guide 128 having a reverse C-shape for guiding the newspaper P to the first feed table 113 is provided below the insertion port 105.

  The opening / closing guide member 115 is swingably provided with the roll drive shaft 130 as a fulcrum, and is urged toward the first feed table 113 by a compression spring 129.

  A pulley 131 is provided at the lower end of the opening / closing guide member 115. The pulley 131 is given a driving force by a driving source (not shown), is driven to rotate so as to convey the newspaper P downward, and the pulley 140 is pivotally supported on the first feed table 113 by the urging force of the compression spring 129. Is in contact with

  The opening / closing guide member 115 is swung by a drive source and a crank mechanism (not shown). When the crank mechanism starts to rotate, the opening / closing guide member 115 swings against the urging force of the compression spring 129, and the pulley 131 is separated from the pulley 140. When the crank mechanism rotates once, the pulley 131 returns to the original position and contacts the pulley 140. By this opening / closing operation, the newspaper P is dropped when the pulley 131 and the pulley 140 are separated while being sandwiched between the films F, and then the pulley 131 returns to the original position so that the newspaper P is moved to the pulley 131 and the pulley 140. And conveyed to the second feed table 114 below.

  Belts 162 and 170 are provided on the second feed table 114 and the feed presser member 116, respectively, and are rotated by a drive source (not shown) so as to be conveyed downward with the newspaper P interposed therebetween, and the feed presser member 116 is compressed. The spring 172 is biased toward the second feed table 114 side. In addition, a pair of fourth sensors 171 capable of detecting the newspaper P are provided at the upper position of the second feed table 114.

  The second feed table 114 is provided with a welding mechanism for welding and packaging the film F with the newspaper P interposed therebetween. The newspaper P sandwiched between the films F and carried into the second feed table 114 is temporarily stopped by this welding mechanism, and the film F is welded on both sides and the rear end side of the newspaper P.

  The wrapped newspaper P is discharged from below and loaded on the hopper 199.

  The pulley 131 and the belts 162 and 170 are driven by a common motor (not shown). Since the drive timing of the pulley 131 is different from that of the belts 162 and 170, the drive is transmitted from the motor to the pulley 131 via an electromagnetic clutch.

  FIG. 23 is a front view showing a welding mechanism portion of this conventional packaging apparatus.

  As shown in FIG. 23, the second solenoid 192 enables the cutting heater 195 to move between the solid line position and the one-dot chain line position, and the tip of the cutting heater 195 is pressed against the sponge body 196 at the one-dot chain line position. , Pressurize and heat to weld the rear end side of the newspaper P of the film F.

  Further, the first solenoid 191 enables the adhesive heater 197 provided on both ends of the newspaper P to be moved between the solid line position and the one-dot chain line position in the figure, and the tip of the adhesive heater 197 is similarly moved at the one-dot chain line position. It presses against the sponge body 198 provided on both ends of the newspaper P, sandwiches the film F, pressurizes and heats, and welds both ends of the newspaper P of the film F.

Next, operation of this conventional packaging system will be described with reference to FIGS. 22 and 23.

  Four folded newspapers P are inserted from the insertion slot 105. At this time, the film F is supplied to the first feed table 113, and the lower ends thereof are welded to each other. The lower end of the inserted newspaper P comes into contact with the pulleys 131 and 140 and stops. At this time, when the first sensor 154 detects the newspaper P, a crank mechanism (not shown) is activated and the opening / closing guide member 115 is opened and closed once. The newspaper P once falls by its own weight, and is then sandwiched between the pulleys 131 and 140 and conveyed downward.

Thereafter, when the newspaper P is carried into the welding mechanism portion of the second feed table 114, the belts 162 and 170 are stopped, the first solenoid 190 and the second solenoid 191 are excited, and the both ends and rear ends of the newspaper P are excited. Film F is welded. Thereafter, the conveyance of the newspaper P by the belts 162 and 170 is resumed, and the films F and F are cut at the welding portion on the rear end side of the newspaper P. The wrapped newspaper P is discharged downward and dropped onto the hopper 199. To prevent the next newspaper P from being carried in until the newspaper P is discharged, the drive is not transmitted to the pulley 131 by turning off the electromagnetic clutch (see, for example, Patent Document 1).
JP-A-11-70913

  In such a packaging device, if the next inserted product enters the welding mechanism part while the product is being packaged by the welding operation in the welding mechanism part, the goods are overlapped and packaged. Or the next inserted item is sandwiched between the cutting heater and the sponge body, resulting in a paper jam. In the packaging device of the above-described background art, the pulley 131 and the pulley 140 are pressed against each other by the opening / closing guide member 115 to stop the driving rotation of the pulley 131 until the newspaper previously inserted in the welding mechanism unit is discharged. Even if the next newsprint is inserted, the front end of the newsprint is brought into contact with the pulley 131 and the pulley 140 and stopped so that it does not enter the welding mechanism.

  Accordingly, in addition to the second feed table 114 that performs welding, a first feed table 113 and an opening / closing guide member 115 on which the next newspaper is waiting are provided, and driving force is applied to each of the opening / closing guide member 115 and the second feed table 114. Therefore, there is a problem that the apparatus becomes large, a drive source with high output is required, and the power transmission mechanism becomes complicated. Even if the transport drive of the second feed table 114 is ON, the transport drive of the open / close guide member 115 must be turned off so that the next newsprint does not enter the second feed table while the previous newsprint is being discharged. As a result, an expensive electromagnetic clutch is used for the power transmission mechanism, which increases the cost.

  Further, in order to convey the newspaper that has fallen by the opening / closing operation of the opening / closing guide member 115 to the second feed table 114 while being sandwiched between the pulley 131 and the pulley 140, the pulley 131 must be driven and rotated for a certain period of time after the newspaper paper falls by its own weight. Don't be. When the next newspaper is inserted from the insertion slot 105 during the rotation of the drive, the next newspaper is inserted into the pulley 131 and the pulley 140 and is conveyed downward together with the previously inserted newspaper. , Both of the newspapers entered the second feed table 114, and two copies of the newspapers were sometimes wrapped or a paper jam occurred.

  In such a newspaper wrapping apparatus, in particular, since the newspaper must arrive at the dealer for a short time from delivery to the delivery, and since it is late at night, the worker can work as quickly as possible. Therefore, after inserting the previous newspaper, the next newspaper may be inserted at a slight interval. Even in such a case, a packaging machine that can wrap one copy at a time is desired. It was.

  The present invention can use a low-power drive source, has a simple structure and is inexpensive, and even after the previous product is inserted, even if the next product is inserted at a slight interval, it can be packaged one by one. An object is to provide a packaging device.

Packaging apparatus of the present invention in order to solve the above problems, an insertion port for inserting the article was a passage for guiding the articles inserted into the insertion opening provided in the article moving direction downstream side of the passage, the goods Is temporarily stopped in a state where the film is sandwiched between two films, and the film is welded at the peripheral portion of the product to wrap the product, an opening / closing member that can project and retreat into the passage, and the opening / closing member. In a packaging apparatus having a driving means for projecting and retracting into a passage, a control means for controlling the driving means, and a detecting means for detecting that the tip of the inserted article has passed through the protruding portion of the opening / closing member . ,
The packaging section is provided with a welding cutting heater movably provided between a standby position where the inserted product can pass and a welding position where two films are welded and cut at the rear end of the product. Equipped with a mechanism
When the control means receives the detection signal detected by the detection means for the inserted item, the opening and closing member is projected,
After that, the opening / closing member is controlled to be retracted after the welding cutting heater mechanism reaches the welding position at the rear end portion of the inserted product .

Alternatively, the packaging device of the present invention is provided with an insertion port for inserting an item, a passage for guiding the item inserted into the insertion port, and a downstream side of the passage in the item moving direction. The film is temporarily stopped in a sandwiched state, and the film is welded at the peripheral edge of the product to wrap the product, an opening / closing member that can project and retract in the passage, and the opening / closing member projects and retracts in the passage. In a packaging apparatus having a driving means for controlling, a control means for controlling the driving means, and a detection means for detecting that the tip of the inserted article has passed through a portion where the opening / closing member protrudes.
The packaging section is provided with a welding cutting heater movably provided between a standby position where the inserted product can pass and a welding position where two films are welded and cut at the rear end of the product. This mechanism is provided upstream of the welding cutting heater mechanism in the direction of movement of the product, and is rotated by the contact of the product from the insertion port side to guide the product to the packaging part. During the film welding operation period, the insertion port side A shutter plate configured to prevent the product from entering the packaging part without rotating even when the product comes into contact with the press, and pressurizing so that the shutter plate does not rotate during the film welding operation period Means and
When the control means receives the detection signal obtained by detecting the inserted item by the detection means, the control means projects the opening / closing member to prevent the next inserted article from moving forward, and then retracts the opening / closing member at a predetermined timing. Control the drive means so that
The predetermined timing is a timing at which the tip of the next item advanced by retraction of the opening / closing member comes into contact with the shutter plate while the pressurizing unit pressurizes the shutter plate.

Further, the pressurizing means engages the shutter plate in accordance with the welding operation of the welding cutting heater mechanism, and the shutter plate is placed on the shutter pedestal provided facing the shutter plate with the film sandwiched between the two films. An urging member that increases the urging force in conjunction with the operation of the welding cutting heater mechanism moving from the standby position to the welding position while urging so as to be pressed between the two may be included.

Further, the pressurizing means engages the shutter plate in accordance with the welding operation of the welding cutting heater mechanism, and the shutter plate is placed on the shutter pedestal provided facing the shutter plate with the film sandwiched between the two films. An urging member that increases the urging force in conjunction with the operation of the welding cutting heater mechanism moving from the standby position to the welding position while urging so as to be pressed between the two may be included.

Moreover, you may have the cover part which covers the protrusion direction front-end | tip upper direction of an opening / closing member in the protrusion direction front-end | tip of the said opening / closing member.

  According to the packaging device of the present invention, since a simple opening / closing unit mechanism is provided, the next product is inserted immediately after the product is inserted without using an electromagnetic clutch and a brake with a simple structure and low cost. However, there is an effect that it is possible to prevent clogging caused by colliding with the item in the package inserted first, and double packaging in which the first input item and the next input item are packaged together.

  Embodiments of a packaging apparatus according to the present invention will be described below with reference to the drawings. In the present embodiment, the case where the article to be packaged is a newspaper is disclosed, but the article to be packaged in the packaging apparatus of the present invention is not limited to a newspaper, magazines, paper bundles, signatures, and other sheet-like articles. Applicable to. First, a first embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view of a packaging device according to a first embodiment of the present invention. As shown in FIG. 1, the packaging apparatus 1 of this invention is formed in the vertical box. A frame 3 to which casters 2 are attached is provided horizontally at the lower part of the box, and frames 4 and 5 are erected vertically at appropriate intervals on the left and right sides of the box. Covers 6 and 7 are attached to each. Further, on the upper surface of the box, a top plate 8 and an insertion port 9 for inserting the newspaper N into the packaging device 1 in the direction shown in FIG. 1 are provided. A discharge port 10 through which the packaged newspaper N is discharged is provided at the lower front of the box body, and a newspaper receiving portion 11 on which the packaged newspaper N discharged from the discharge port 10 is loaded can be accommodated in the box body. Is provided.

  FIG. 2 is a schematic front view showing the packaging device 1 according to the embodiment of the present invention. As shown in FIG. 2, an insertion guide unit 13 that forms an insertion port 9 and a drop passage 12 is provided at the top of the packaging device 1, and protrudes and retracts into the drop passage 12 adjacent to the insertion guide unit 13. An opening / closing unit 14 including a possible opening / closing member is provided.

  On both sides of the insertion guide unit 13, film rolls 15 and 16 each having a belt-like film F wound thereon are provided, and a welding part transport unit 17 is disposed below the insertion guide unit 13. Between the insertion guide unit 13 and the welding part transport unit 17, a rear end side welding cutting part 18 for welding the film on the rear end side of the newspaper N is provided. Side welded portions 19 for welding films on both sides in the N conveyance direction are disposed.

  A discharge guide 20 that guides the packaged newspaper N to the discharge port 10 is provided below the welding unit transport unit 17.

  Next, the insertion guide unit 13 will be described in detail.

  FIG. 3 is a side view showing the insertion guide unit 13. As shown in FIGS. 2 and 3, the insertion guide unit 13 is provided with an insertion port 9 on the upper side, guide plates 21 and 22 provided parallel to the insertion port 9 diagonally downward, and the width of the newspaper P. Guide plates 23, 24 orthogonal to the guide plates 21, 22 are formed on both sides in the direction, and the drop passage 12 surrounded by these guide plates 21, 22, 23, 24 causes the newspaper N to fall downward. Is formed.

  The guide plates 21, 22 are slightly inclined toward the guide plate 22 side with respect to the vertical plane, and the upper ends of the guide plates 22, 23, 24 are formed to extend upward from the upper end of the guide plate 21.

  Next, the opening / closing unit 14 will be described in detail.

  4A is a front view showing a position where the opening / closing unit 14 is retracted from the drop passage 12, FIG. 4B is a front view showing a position where the opening / closing unit 14 protrudes into the drop passage 12, and FIG. 3A is a cross-sectional view taken along the line AA in FIG. 3 in a state where the opening / closing unit 14 is retracted from the inside of the drop passage 12 (the state shown in FIG. 4A), and FIG. It is AA sectional drawing shown in FIG. 3 in the state (state of FIG.4 (b)) which carried out.

  As shown in FIGS. 3 to 5, the guide plate 22 is provided with two openings 22a at an appropriate interval in the width direction, and one end 26a of an L-shaped lever 26 is formed through the openings 22a. It is provided in the drop passage 12 so as to be able to protrude and retract. A shaft 27 is fixed to one end 26a of the lever 26, and a roller 28 is rotatably supported on the shaft 27.

  Next, a drive mechanism for operating the opening / closing unit 14 will be described. The other end 26b of the lever 26 is fixed to a drive shaft 29 by a screw 26c, and the drive shaft 29 is swingably supported by support plates 30 and 31 erected on the guide plate 22. One end of a driven lever 32 is fixed near one end of the drive shaft 29, and a spring 33 is hung between the other end of the driven lever 32 and the guide plate 22. By this spring 33, the lever 26 is biased in a direction in which one end 26 a of the lever 26 protrudes into the drop passage 12.

  A first engagement pin 34 is fixed to the other end of the driven lever 32, and a second engagement pin 35 is fixed near the center. The first engagement pin 34 is inserted through a first opening 36a formed in the engagement lever 36, and the second engagement pin 35 is inserted through a second opening 36b. The first opening 36a has one end 36a-1 having a narrow horizontal width and the other end 36a-2 having a wide horizontal width, and one end 36a-1 and the other end 36a below the first opening 36a. 2 is connected to -2. The second opening 36b is provided above the first opening 36a in FIG. 4 and has a rectangular shape. The engaging lever 36 can swing around a fulcrum shaft 37, and the fulcrum shaft 37 is fixed to the support plate 31.

  A solenoid 38 as a drive source of the opening / closing unit 14 is fixed to the frame 4. One end of the link 39 is loosely fitted to the plunger of the solenoid 38, and the other end of the link 39 and the approximate center of the drive lever 40 are loosely fitted. The drive lever 40 is swingably supported on a fulcrum shaft 41 fixed to the frame 4. A drive pin 42 is fixed to one end 40 a and a spring 43 is hung between the other end 40 b and the frame 4. ing. The drive lever 40 is urged by the spring 43 so as to rotate clockwise in FIG. 4 with the fulcrum shaft 41 as a fulcrum, and a column 44 for restricting the rotation is erected on the frame 4. The drive pin 42 is configured such that the peripheral surface of the distal end portion contacts the pin engaging portion 36 c of the engaging lever 36 through the opening of the frame 4.

  As shown in FIGS. 4 (a) and 5 (a), when the solenoid 38 is demagnetized, the drive lever 40 is urged by the spring 43 to rotate in the clockwise direction shown in FIG. 4, and the other end 40b. In the vicinity, it stops in contact with the pillar 44. When the pin engaging portion 36c is pushed up by the drive pin 42, the engaging lever 36 rotates clockwise with the fulcrum shaft 37 as a fulcrum as shown in FIG. Then, the lower side 36b-1 of the second opening 36b pushes up the second engagement pin 35 so that the driven lever 32 rotates counterclockwise as shown in FIG. 4 with the drive shaft 29 as a fulcrum against the bias of the spring 33. Move. By this rotation, the drive shaft 29 fixed to the driven lever 32 also rotates counterclockwise, and the lever 26 fixed to the drive shaft 29 also rotates counterclockwise. Therefore, the lever 26 and the roller 28 are in a position retracted from the drop passage 12 through the opening 22a.

FIGS. 4 (b) and 4, as shown in FIG. 5 (b), when the solenoid 38 is energized state, the rotation driving lever 40 via the link 39 to the fulcrum fulcrum shaft 41 in a counterclockwise direction shown in FIG. 4 To do. Then, the drive pin 42 is lowered, and the engagement lever 36 rotates counterclockwise as shown in FIG. 4 with the fulcrum shaft 37 as a fulcrum while the pin engagement portion 36c is in contact with the drive pin 42 by its own weight. Then, the driven lever 32 is rotated in the clockwise direction shown in FIG. 4 by the urging force of the spring 33. By this rotation, the drive shaft 29 fixed to the driven lever 32 also rotates clockwise. Further, the lever 26 fixed to the drive shaft 29 also rotates in the clockwise direction, and the one end 26a side and the roller 28 of the lever 26 project into the drop passage 12 through the opening 22a to close the drop passage 12.

  At this time, the second engagement pin 35 is separated from the lower side 36b-1 of the second opening 36b, and the first engagement pin 34 is positioned at the one end 36a-1 having a narrow opening width of the first opening 36a. Become. Accordingly, even if the newspaper N inserted from the insertion slot 9 abuts against the lever 26 or the roller 28 in a state where the lever 26 and the roller 28 protrude into the drop passage 12, the first engagement pin 34 is one end of the first opening 36a. The newspaper N can be prevented from entering by coming into contact with the side of the portion 36a-1 and preventing the lever 26 from rotating clockwise when pushed by the newspaper.

  Also, as shown in FIG. 2, by providing the dropping passage 12 slightly inclined toward the guide plate 22 side, the inserted newspaper N falls while its lower end abuts against the guide plate 22, and the roller 28 and the guide plate It is possible to prevent the newspaper N from entering between 21 and 21.

  Further, as shown in FIGS. 2 and 3, a guide plate 22 is provided so as to extend above the guide plate 21, and prompts the operator to insert the lower end of the newspaper N in contact with the guide plate 22. May be.

  Then, each part of a packaging part is demonstrated. As shown in FIG. 2, the packaging part has respective parts of a rear end welded cut part 18, a welded part transport unit 17, and a side welded part 19.

  First, the rear end welded cut portion 18 will be described. FIG. 6 is a front view showing the rear end welded cut portion 18.

  As shown in FIG. 6, the rear end welding / cutting portion 18 is provided facing the welding / cutting heater mechanism 45 provided below the insertion guide unit 13 (see FIG. 2) and the welding / cutting heater mechanism 45. A shutter pedestal 46, a shutter plate 47 provided between the insertion guide unit 13 and the welding cutting heater mechanism 45, a pressing member 48 for pressing the shutter plate 47 toward the shutter pedestal 46, and a pressing member 48. And a pressing member pressurizing spring 49 which is a pressing spring for applying the.

  The film F supplied from the film rolls 15 and 16 is introduced so as to be sandwiched between the shutter plate 47 and the shutter receiving base 46 (see FIG. 2).

  The surface of the shutter pedestal 46 that faces the welding / cutting heater mechanism 45 is formed of sponge resin. The shutter plate 47 is fixed to a shaft 50 that is pivotally supported by the frames 4 and 5 (see FIG. 1), and is rotatable about the shaft 50. A spring 51 is provided to urge the shutter 47 so as to rotate counterclockwise as shown in FIG. 1 so that the front end of the shutter plate 47 contacts the shutter pedestal 46.

  The welding / cutting heater mechanism 45 includes a welding / cutting heater mounting member 53 provided so as to be able to approach and separate toward the shutter pedestal 46, and a welding / cutting fixed to this via a heat insulating member (not shown) such as a heat-resistant resin. A heater 54 is provided. In addition, the welding cutting heater mounting member 53 has an opening 53a on the upstream side in the transport direction from the welding cutting heater 54 mounting portion, and a bearing 55 is provided in the opening 53a.

  The bearing 55 supports both ends of a pressing member 48 provided over the entire width of the newspaper transport range in a direction orthogonal to the newspaper transport direction. Further, a pressing member pressing spring 49 is provided between one end of the opening 53 a and the bearing 55 so as to urge the bearing 55 toward the shutter pedestal 46. The pressing member 48 is urged toward the shutter plate 47 to engage and press the shutter plate 47, thereby pressing the shutter plate 47 toward the shutter cradle 46.

  The welding / cutting heater mechanism 45 is moved toward and away from the shutter plate 46 by a linear slide movement by a drive source and a crank mechanism (not shown).

  FIG. 6A shows that the welding / cutting heater mechanism 45 is in the standby position. When a newspaper is inserted from above, the shutter plate 46 rotates in the clockwise direction shown in FIG. 6 against the bias of the spring 51, and the newspaper is sandwiched between the films F and the welding unit transport unit 17 below. Enter.

  FIG. 6B shows that the welding cutting heater mechanism 45 is in the welding position. After the newspaper has passed through the rear end welding / cutting section 18, the welding / cutting heater mechanism 45 slides from the standby position shown in FIG. 6 (a) toward the shutter cradle 46, and the welding position 18 shown in FIG. 6 (b). To reach. Then, two films F are sandwiched between the tip of the welding cutting heater 54 and the sponge resin of the shutter pedestal 46, and the two films F are heat-welded at this portion.

  Next, the welding part conveyance unit 17 will be described in detail.

  As shown in FIG. 2, the welding unit conveyance unit 17 includes a conveyance belt 58 wound around rollers 56 and 57, a conveyance belt 61 wound around rollers 59 and 60, and a conveyance guide 62. .

  Furthermore, it has a drive mechanism for driving these rollers and belt, and a drive transmission mechanism for transmitting the drive force from the drive mechanism. FIG. 7 is a front view showing a driving mechanism, a drive transmission mechanism, and a conveying belt pressurizing mechanism of the welded portion conveying unit 17.

  A gear 64 is fixed to the roller shaft 63 to which the roller 57 is fixed, and the gear 64 meshes with a first transmission gear 66 fixed to the first transmission shaft 65. A first transmission pulley 67 is fixed together with the first transmission gear 66 on the first transmission shaft 65, and a first transmission belt 69 is hung between the first transmission pulley 67 and the drive motor 68. Yes.

A second transmission shaft 70 is provided to the first transmission shaft 65 at an appropriate interval across the newspaper conveyance path. A second transmission pulley 71 is fixed to the second transmission shaft 70, and a second transmission belt 72 is hung between the second transmission pulley 71 and the first transmission pulley 67.
The roller 59 is fixed to the roller shaft 73, and the roller 60 is fixed to the roller shaft 79. A pulley 74 is fixed to the roller shaft 73, and a third transmission belt 75 is hung between the pulley 74 and the second transmission pulley 71.

  The roller 56 is fixed to a roller shaft 76, and the roller shaft 76, the roller shaft 63, and the first transmission shaft 65 are rotatably supported by the frames 4 and 5 (not shown in FIG. 7).

  Further, the first transmission shaft 65 extends to the outside of the frames 4 and 5 and rotatably supports one end of a pair of L-shaped first sub-frames 77 on both outer sides. The first subframe 77 rotatably supports the second transmission shaft 70 in the vicinity of the L-shaped bent portion, and rotatably supports the roller shaft 73 at the other end of the L-shape.

  The roller shaft 73 rotatably supports one end of the second subframe 78, and the roller shaft 79 is rotatably supported on the other end of the second subframe 78. A spring 80 is provided between the first subframe 77 and the second subframe 78, and a spring 82 is further provided between the first subframe 77 and the spring receiver 81 fixed to the frames 4 and 5. Is provided. The conveyor belt 61 is biased toward the conveyor belt 58 by the spring 80 and the spring 82.

  When a newspaper enters between the transport belt 61 and the transport belt 58 from above, the roller 59 moves away from the roller 56 depending on the thickness of the newspaper. Then, the first sub-frame 77 rotates counterclockwise as shown in FIG. 1 with the first transmission shaft 65 as a fulcrum against the urging of the spring 82. The first transmission shaft 65, which is the rotation center of the first sub-frame 77, is disposed below the roller 59 with a space therebetween, and is disposed on the opposite side of the roller 59 with the conveyance surface interposed therebetween. . Therefore, since there is no component in the moving direction of the roller 59 when the newspaper enters between the conveyance belts, the newspaper can smoothly enter between the conveyance belts.

  Further, since the length of the spring 80 is increased by the rotation of the first sub-frame, the spring pressure is reduced, so that the pressing force of the roller 61 against the roller 57 is reduced and the newspaper can easily advance between the conveyance belts. It is supposed to be. As the newspaper advances further, the roller 61 moves away from the roller 57.

  With this configuration, the transport belts 58 and 61 can be separated independently at the upstream end and the downstream end, respectively, and the newspaper can easily enter and advance between the transport belts 58 and 61. Even if the conveying belts 58 and 61 are separated from both the upstream end side and the downstream end side, since the drive is transmitted to both the roller shaft 63 and the roller shaft 73, both the conveying belts 58 and 61 are driven to rotate. Can be reliably conveyed.

  Next, the side welding part 19 is demonstrated.

  As shown in FIG. 2, a pair of side welded portions 19 are provided on both sides of the conveyor belts 58 and 61. The side welding portion 19 includes a sponge resin 83 fixed to the conveyance surface of the conveyance guide 62, a side welding knife 84 provided opposite to the sponge resin 83, and the side welding knife 84 from the sponge resin 83. A drive mechanism (not shown) that slides linearly between the separated standby position and the welding position where the tip contacts the sponge resin 83, and a heating mechanism (not shown) that heats the side welding knife 84 The film F sandwiching the newspaper is sandwiched between the side welding knife 84 and the sponge resin 83 on both sides of the newspaper and heat-welded.

  Next, the sensor and the control means will be described.

  A first sensor S1 that detects the front end of the newspaper is provided between the insertion guide unit 13 and the rear end welding / cutting unit 18, and a newspaper is provided between the rear end welding / cutting unit 18 and the welding unit transport unit 17. A second sensor S2 for detecting the front end and the rear end is provided, and the detection signals of these sensors S1, S2 are connected to the control means 85 so as to be transmitted. Further, the control means 85 is connected to the solenoid 38 of the opening / closing unit 14 so as to be able to transmit an ON / OFF signal, and further, a motor 68 (see FIG. 7) for driving the welding portion transport unit 17; A welding control heater mechanism 45 (see FIG. 6) and a motor (not shown) that drives the side welding portion 19 are also connected to be able to transmit a drive control signal.

  The control means 85 will be described below. The operation of the opening / closing unit 14, the welding / cutting heater mechanism 45, the side welding part 19, and the welding part transport unit 17 is controlled based on the detection signals of the sensors S1 and S2. When a detection signal for detecting the front edge of the newspaper is sent from the first sensor S1, a signal is sent to the motor 68 so as to start driving the welded part conveyance unit 17.

  Next, when a detection signal for detecting the front end of the newspaper is sent from the second sensor S2, a protruding signal is sent to the solenoid 38 so that the opening / closing unit 14 protrudes into the dropping passage 12. Subsequently, when the second sensor detects the trailing edge of the newspaper, the driving of the welding unit transport unit 17 is stopped, and a signal is sent to the welding cutting heater mechanism 45 and the side welding knife 84 of the side welding unit 19, and a series of later described A welding operation is performed, and two films F are welded and packaged on the rear end side and both sides of the newspaper. During this welding operation, a retract signal is sent to the solenoid 38 so that the open / close unit 14 is retracted from the drop passage 12. When the welding operation is finished, a signal is sent to the motor 68 so as to resume the driving of the welding part transport unit 17. The newspaper wrapped with the film F is cut at the welded portion on the rear end side and sent out of the machine through the discharge port 10.

  Next, operation | movement of the packaging apparatus of this invention is demonstrated using FIG.

  As shown in FIG. 8, the newspaper N <b> 1 inserted from the insertion slot 9 falls in the drop passage 12 of the insertion guide unit 13. Since the opening / closing unit 14 is in the open state, the newspaper N1 falls and the front end abuts against the shutter plate 47. At this time, the front end of the newspaper N1 is detected by the front end detection sensor S1, and this detection signal is transmitted to the control means 85 (see FIG. 2). Then, the control means 85 sends a signal to the motor 68 (see FIG. 7) so as to start the driving of the welded part transport unit 17, and the motor 68 starts to rotate, so that the transport belts 58 and 61 start to rotate.

  Next, as shown in FIG. 9, the shutter plate 47 is pushed by the weight of the newspaper N1 and rotates in the clockwise direction in the drawing, and the newspaper N1 passes between the shutter plate 47 and the shutter pedestal 46 and has its own weight downward. Moving.

  When the leading edge of the newspaper N1 is detected by the second sensor S2, a detection signal is transmitted to the control means 85 (see FIG. 2). In response to this signal, the control means 85 transmits a projecting signal for projecting the opening / closing unit 14 into the drop passage 12 to the solenoid 38 (see FIG. 2). The solenoid 38 that has received the protrusion signal enters an excited state, and the lever 26 and the roller 28 protrude into the drop passage 12 (see FIG. 4B). Since the newspaper N1 still remains in the fall passage 12, the newspaper N1 is sandwiched between the guide plate 21 and the roller 28.

  Next, as shown in FIG. 10, after the second sensor S <b> 2 detects the leading edge of the newspaper N <b> 1, the newspaper moves by its own weight and is introduced between the transport belts 58 and 61. Thereafter, the newspaper N1 is transported downward by the transport belts 58 and 61 with the back thereof sandwiched between the guide plate 21 and the rollers 28. The roller 28 rolls while contacting the newspaper N1.

  Since the newspaper N1 can move downward under its own weight even when it is sandwiched between the guide plate 21 and the roller 28, the control is performed when the first sensor S1 receives a detection signal for detecting the leading edge of the newspaper N1. The means 85 may send a protrusion signal to the solenoid 38.

  Next, as shown in FIG. 11, the newspaper N <b> 1 moves downward by its own weight or the conveyor belts 58 and 61, and its rear end is opened from the opening / closing unit 14. Then, the roller 28 further advances in the direction closer to the guide plate 21 by the thickness of the newspaper N1. Thereafter, as shown in FIG. 4 (b), the first engagement pin 34 is positioned at the narrow end portion 36a-1 of the first opening 36a. In this state, the next newspaper N2 is inserted. Even so, it is possible to prevent the newspaper N2 from entering by being pushed by the tip of the newspaper N2 and preventing the lever 26 from rotating clockwise.

  Further, the opening / closing unit 14 is projected at the timing when the roller 28 contacts the newspaper N1 whose rear end remains in the drop passage 12, so that the next newspaper immediately after the rear end of the newspaper N1 is opened from the opening / closing unit 14. N2 can be prevented from entering.

  Next, as shown in FIG. 12, when the rear end of the newspaper N1 is detected by the second sensor S2, a detection signal is sent to the control means 85 (see FIG. 2). Then, the control means 85 sends a signal to the motor 68 (see FIG. 7) so as to stop the driving of the welded part conveyance unit 17. The motor 68 stops rotating, and the newspaper N1 stops at a predetermined position while being sandwiched between the conveyor belts 58 and 61.

  After the rear end of the newspaper N1 passes, the shutter plate 47 rotates counterclockwise in the drawing by the action of the spring 51 (see FIG. 4), and again comes into contact with the shutter pedestal 46 with the film F interposed therebetween.

  During this time, the next newspaper N2 is prevented from moving further downward by abutting the lever 26 or the roller 28, so that the next newspaper N2 collides with the stopped newspaper N1 to cause a paper jam. It is possible to prevent the newspaper N2 from being overlapped with the newspaper N1 and being wrapped together.

  Next, as shown in FIG. 13, the control means 85 (see FIG. 2) drives a motor (not shown) that drives the welding cutting heater mechanism 45, and the welding cutting heater mechanism 45 moves from the standby position toward the welding position. Moving. During this movement, as shown in FIG. 6B, the pressing member 48 is engaged with the shutter plate 47, and the pressing member pressing spring 49 is compressed to pressurize the pressing member 48, that is, the pressing member 48. Pressurizes the shutter plate 47. Therefore, the front end of the shutter plate 47 presses the film F toward the shutter cradle 46.

  When the welding / cutting heater mechanism 45 reaches the welding position (beginning of the welding operation period), the tip of the welding / cutting heater 54 comes into contact with the film F, and the film F is heated and welded at the contacted position. The welding cutting heater mechanism 45 is temporarily stopped at the welding position, and is separated from the shutter receiving base 46 after the film F is welded. At the same time, the side welding knife 84 of the side welding part 19 moves to sandwich the film F with the sponge resin 83 and weld the film F on both sides of the newspaper N1.

  Note that the film F on the front end side of the newspaper N1 is already welded by the packaging operation of the newspaper inserted immediately before the newspaper N1. Therefore, by welding the rear end portion and both side portions of the newspaper N1, the film F is welded on the four sides around the newspaper N1.

  When the welding cutting heater 54 and the side welding knife 84 reach the welding position (that is, when the welding operation period starts), the control means 85 (see FIG. 2) outputs a retraction signal for retracting the opening / closing unit 14 from the drop passage 12. Transmit to solenoid 38. The solenoid 38 that has received the retract signal is demagnetized, and the lever 26 and the roller 28 are retracted from the drop passage 12 (see FIG. 4A). Then, the next newspaper N2 moves downward under its own weight.

  Next, as shown in FIG. 14, the welding cutting heater mechanism 45 starts moving toward the standby position (see FIG. 6A) (end of the welding operation period). Before the welding cutting heater mechanism 45 reaches the standby position, the circumferential driving of the conveying belts 58 and 61 is resumed in the welding portion conveying unit 17, and the film F is pulled and cut at the welding portion by the welding cutting heater 54.

  Next, as shown in FIG. 15, the newspaper N1 wrapped with the film F moves toward the discharge port 10, and the welding cutting heater 54 and the side welding knife 84 return to the standby position. At this time, the leading edge of the next newspaper N2 rotates the shutter plate 47 and is inserted into the conveyor belts 58 and 61. In the newspaper N2, as in the newspaper N1, when the tip is detected by the second sensor S2, the solenoid 38 (see FIG. 2) is excited by this detection signal, and the opening / closing unit 14 projects into the drop passage 12, and further Block the entry of the next newspaper N3.

  Next, as shown in FIG. 16, the packaged newspaper N1 is discharged from the discharge port 10, the rear end of the newspaper N2 is detected by the second sensor S2, the conveying belts 58 and 61 are stopped, and the welding operation is performed. .

  Thereafter, the operations of FIGS. 12 to 16 are repeated.

  During the welding operation around the newspaper N1 in FIG. 13, while the shutter plate 47 is being pressed toward the shutter pedestal 46 by the pressing member pressing spring 49 via the pressing member 48, the following is performed. The timing at which the opening / closing unit 14 is moved to the retracted position may be controlled so that the newspaper N2 falls and the front end abuts against the shutter plate 47.

  Since the shutter plate 47 is pressed by the pressing member pressurizing spring 49, the shutter plate 47 does not rotate due to the weight of the newspaper N2, and prevents the newspaper N2 from entering below the shutter plate 47. During the welding operation around the newspaper N1, the shutter plate 47 is pressed toward the shutter pedestal 46 and prevents the newspaper N2 from descending, so the newspaper N2 may hit the welding cutting heater 54. The newspaper N2 can be prevented from colliding with the newspaper N1.

  When the welding cutting heater 54 is separated from the film F and the pressurization to the shutter plate 47 by the pressing member pressing spring 49 is released, the newspaper N2 rotates the shutter plate 47 by its own weight and moves to the welding position. To do. If comprised in this way, since the newspaper N2 can be packaged immediately after packaging of the newspaper N1, processing speed can be improved.

  Next, a second embodiment of the present invention will be described with reference to the drawings. The second embodiment of the present invention is different from the first embodiment in the opening / closing unit, and other parts are the same as those in the first embodiment, and the same parts are denoted by the same reference numerals.

  FIG. 17A is a front view showing a state in which the open / close unit 214 according to the second embodiment of the present invention protrudes into the drop passage 12, and FIG. 17B shows a state in which the open / close unit 214 is retracted from the drop passage 12. FIG. The opening / closing unit 214 according to the second embodiment is a linear motion mechanism that can move forward and backward in the drop passage 12.

  In the second embodiment, the shielding lever 226 is provided in the drop passage 12 so as to protrude and retract through the two openings 22 a of the guide plate 22. A shaft 227 is fixedly supported at one end of the shielding lever 226, and a roller 228 is rotatably supported on the shaft 227. Further, the shielding lever 226 is formed to have a cover portion 226 a that covers the upper portion of the roller 228. The other end of the shielding lever 226 is fixed to the stay 229. The stay 229 is formed to be elongated in a direction perpendicular to the newspaper conveyance direction, and both ends in the longitudinal direction are slidable along the guide rail 89 provided on the support plate 230, and the sliding lever 226 is opened by the slide. It is a mechanism for projecting and retracting into the drop passage 12 through 22a.

  A spring 90 is applied between the shielding lever 226 and the guide plate 22 and urges the shielding lever 226 in a direction in which the shielding lever 226 protrudes into the drop passage 12. When the shielding lever 226 is retracted, it slides to the retracted position against the spring 90 using an appropriate drive mechanism (not shown) such as a solenoid link mechanism or a cam mechanism.

  With this configuration, as shown in FIG. 18, even if the first inserted newspaper N1 does not pass between the roller 228 and the guide plate 21, the leading end of the next inserted newspaper N2 has a cover 226a. It contacts the upper surface of the shielding lever 226. Therefore, even if the newspaper N2 is inserted when the newspaper N1 remains in the drop passage 12, the newspaper N2 can be prevented from entering, so paper jamming and double packaging can be prevented more reliably.

  Subsequently, a third embodiment of the present invention will be described. FIG. 19 is a perspective view showing a packaging device 300 according to the third embodiment of the present invention.

  In the third embodiment, notifying means 301 is provided for notifying the operator that the next newspaper can be inserted at the same time when the control means transmits the retract signal to the opening / closing member. The other features are the same as those of the first or second embodiment, and the same parts are denoted by the same reference numerals.

  The notification means 301 is a lamp that can be visually recognized by the operator, a means for emitting a light emitter such as an LED, a means for displaying a predetermined character / symbol on a part of an operation panel composed of a liquid crystal, etc. Any other means that can notify the operator can be applied.

  As already described in the first embodiment, when the welding cutting heater 54 and the side welding knife 84 reach the welding position, the control means 85 transmits a retraction signal to the solenoid 38, the solenoid 38 is demagnetized, and the lever 26 Then, the roller 28 is retracted from the drop passage 12 (see FIGS. 2 and 4).

  In the third embodiment, simultaneously with the transmission of the evacuation signal, the control unit 85 sends a notification signal to the notification unit 301 to cause a light emitter such as a lamp or an LED to emit light, or a part of an operation panel configured by liquid crystal or the like. The operator is notified by a method such as displaying predetermined characters / symbols or making a sound.

  Since the operator inserts newspapers one after another while looking at the insertion slot 9 at the time of operation, when the notification means 301 is a visually recognizable means such as a light emitter, as shown in FIG. It is desirable to be placed at a position that enters the field of view.

  The informing means 301 may be a speaker device or the like that produces a sound that can be recognized by hearing, and this speaker device may also be placed anywhere in the packaging device 1 (for example, packaging) so that the notification sound can be recognized outside the packaging device. It is provided on the front side of the operation side of the apparatus.

  The operator can recognize from the notification by the notification means 301 that the packaging apparatus 1 is ready to accept the next newspaper N2, so that the newspaper N2 can be opened and closed by inserting the newspaper N after confirming the notification each time. Since entry is not blocked once, the work can be smoothly advanced.

  In rare cases, even if the next newspaper N2 is inserted before the notification by the notification means 301, entry is blocked by the opening / closing unit, so that it is needless to say that no paper jam or double wrapping occurs.

  Subsequently, a fourth embodiment of the present invention will be described. FIG. 20 is a schematic front view showing a packaging device 400 according to the fourth embodiment of the present invention. Of the members constituting the packaging device of the fourth embodiment, members having the same shape and function as those of the first embodiment are denoted by the same reference numerals as those of the first embodiment.

  As shown in FIG. 20, a packaging apparatus 400 according to the fourth embodiment is a horizontal packaging apparatus in which newspapers are horizontally inserted and packaged while being conveyed in the horizontal direction, and an insertion port 409 for inserting an article by hand. A passage 412 for guiding the inserted item, an opening / closing unit 414 that can project and retract in the passage 412, film rolls 15 and 16 for supplying the film F for wrapping the item, And a wrapping portion (configured by the rear end portion welding cut portion 18, the welding portion transport unit 17, and the side welding portion 19) for welding and packaging the film F at the peripheral edge portion.

  FIG. 21 is a front view showing a state in which the opening / closing unit 414 in the fourth embodiment of the present invention protrudes into the passage 412 (corresponding to the drop passage 12 in the first embodiment). As shown in FIG. 21, the difference between the configuration of the opening / closing unit 414 of the fourth embodiment and the first embodiment is that the engagement lever 36 and the guide plate 422 (corresponding to the guide plate 22 of the first embodiment). The other structure is the same as that of the first embodiment because the spring 401 is hung between them. With this configuration, when the solenoid 38 is excited and the lever 26 protrudes into the passage 412, the engaging lever 36 is rotated counterclockwise in FIG. 21 with the fulcrum shaft 37 as a fulcrum by the force of the spring 401. The mating pin 34 is positioned at one end 36a-1 having a narrow opening width of the first opening 36a. That is, in the operation of the engagement lever 36, the portion that was rotated by its own weight in the first embodiment is replaced with the rotation by the force of the spring 401 in the fourth embodiment. With this configuration, even if the tip of the newspaper N is brought into contact with the lever 26 and further pushed in with the lever 26 protruding into the passage 412 as in the first embodiment, the first engagement pin 34 is the first. Since the lever 26 does not rotate in contact with the edge of the opening 36a, the newspaper N can be prevented from entering.

  Further, the operation of the packaging device of the fourth embodiment is advanced by the newspaper N being pushed by hand rather than being dropped by its own weight until the leading edge of the newspaper N is added to the conveyor belts 58 and 61 (see FIG. 20). Although the point which approachs a part differs from 1st Embodiment, other operation | movement is the same as that of 1st Embodiment.

It is a perspective view of the packaging apparatus which concerns on 1st Embodiment of this invention. It is a model front view which shows the packaging apparatus which concerns on 1st Embodiment of this invention. It is a side view which shows the insertion guide unit 13 in 1st Embodiment of this invention. (A) is a front view which shows the position which the opening-and-closing unit 14 in 1st Embodiment of this invention retracted from the inside of the fall channel | path 12, (b) is a front view which shows the position which this opening-and-closing unit 14 protruded into the fall channel | path 12 is there. (A) is AA sectional view shown in Drawing 3 in the state where opening-and-closing unit 14 in a 1st embodiment of the present invention retracted from inside fall passage 12, and (b) is opening-and-closing unit 14 in a 1st embodiment of the present invention. 4 is a cross-sectional view taken along line AA shown in FIG. (A) is a schematic front view which shows the state which the welding cutting heater mechanism 45 exists in a standby position in the rear-end part welding cutting part 18 of 1st Embodiment of this invention, (b) is 1st Embodiment of this invention. FIG. 6 is a schematic front view showing a state in which a welding cutting heater mechanism 45 is in a welding position in the rear end welding cutting unit 18. It is a front view which shows the drive mechanism, drive transmission mechanism, and conveyance belt pressurization mechanism of the welding part conveyance unit 17 in 1st Embodiment of this invention. It is a figure which shows operation | movement of the packaging apparatus which concerns on 1st Embodiment of this invention. It is a figure which shows the operation | movement following FIG. FIG. 10 is a diagram illustrating the next operation of FIG. 9. FIG. 11 is a diagram illustrating the next operation of FIG. 10. FIG. 12 is a diagram illustrating the next operation of FIG. 11. FIG. 13 is a diagram illustrating the next operation of FIG. 12. It is a figure which shows the operation | movement following FIG. It is a figure which shows the operation | movement following FIG. It is a figure which shows the operation | movement following FIG. (A) is a front view which shows the position which the opening-and-closing unit 214 in 2nd Embodiment of this invention retracted from the inside of the fall channel | path 12, (b) is a front view which shows the position which this opening-and-closing unit 214 protruded into the fall channel | path 12 is there. It is a figure which shows the state which inserted the next goods in the state which the opening-and-closing unit in 2nd Embodiment of this invention protrudes in the fall channel | path, and the front-end | tip contact | abutted to goods. It is a perspective view of the packaging apparatus which concerns on 3rd Embodiment of this invention. It is a model front view of the packaging apparatus which concerns on 4th Embodiment of this invention. It is an enlarged front view of the opening-and-closing unit 414 in 4th Embodiment of this invention. It is a front view of the packaging apparatus in background art. It is a figure which shows the welding mechanism part of the packaging apparatus in background art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1; Packaging apparatus 2; Caster 3; Bases 4, 5; Frames 6, 7; Cover 8; Top plate 9; Insertion port 10; Ejection port 11; Newspaper receiving part 12: Drop passage 13: Insertion guide unit 14; 15, 16; Film roll 17; Welding part conveyance unit 18; Rear end side welding cutting part 19; Side welding part 20; Discharge guide 21, 22, 23, 24; Guide plate 22a; Opening part 26; Lever 26a; ; Other end 26c; Screw 27; Shaft 28; Roller 29; Drive shaft 30, 31; Support plate 32; Drive lever 33; Spring 34; First engagement pin 35; Second engagement pin 36; Engagement lever 36a; First opening 36a-1; one end 36a-2; other end 36a-3; bottom 36b; second opening 36b-1; lower side 36c; pin engaging portion 37; fulcrum shaft 38; 39; link 40; drive lever 40a; one end 40b; other end 41; fulcrum shaft 42; drive pin 43; spring 44; pillar 45; welding cutting heater mechanism 46; shutter cradle 47; shutter plate 48; Member pressure spring 50; Shaft 51; Spring 53; Welding and cutting heater mounting member 53a; Opening 54; Welding and cutting heater 55; Bearing 83; Sponge resin 84; Side welding knife 85; Control means 89; Conventional packaging apparatus 101: Main body 105; Insertion port 113; First feed table 114; Second feed table 115; Opening / closing guide member 116; Feed holding member 128; Insertion guide 129; Compression spring 130; Roll drive shafts 131, 140; Pulley 154; first sensor 155; second sensor 162, 170; G 171; fourth sensor 172; compression spring 192; second solenoid 195; cutting heater 196; sponge body 197; adhesive heater 198; sponge body 199; hopper 214; Roller 229; Stay 230; Support plate 300; Packaging device 301; Notification means 400; Packaging device 401; Spring 409; Insertion port 412; Passage 414; Opening / closing unit 422; Guide plate F: Film N, N1, N2, N3; Newspaper P; Newspaper S1; First sensor S2; Second sensor

Claims (5)

An insertion port for inserting the product, a passage for guiding the product inserted into the insertion port, and a downstream side of the passage in the product movement direction, the product is temporarily stopped while sandwiched between two films, A packaging part for welding the film at the peripheral edge of the product to wrap the product; an opening / closing member capable of projecting and retracting into the passage; drive means for projecting and retracting the opening / closing member into the passage; and In a packaging apparatus having control means for controlling, and detection means for detecting that the tip of the inserted item has passed through the portion from which the opening / closing member protrudes ,
The packaging section is provided with a welding cutting heater movably provided between a standby position where the inserted product can pass and a welding position where two films are welded and cut at the rear end of the product. Equipped with a mechanism
When the control means receives the detection signal detected by the detection means for the inserted item, the opening and closing member is projected,
After that, after the welding cutting heater mechanism reaches the welding position at the rear end portion of the inserted product, the packaging device is controlled to retract the opening / closing member. An insertion port for inserting the product, a passage for guiding the product inserted into the insertion port, and a downstream side of the passage in the product movement direction, the product is temporarily stopped while sandwiched between two films, A packaging part for welding the film at the peripheral edge of the product to wrap the product; an opening / closing member capable of projecting and retracting into the passage; drive means for projecting and retracting the opening / closing member into the passage; and In a packaging apparatus having control means for controlling, and detection means for detecting that the tip of the inserted item has passed through the portion from which the opening / closing member protrudes,
The packaging section is provided with a welding cutting heater movably provided between a standby position where the inserted product can pass and a welding position where two films are welded and cut at the rear end of the product. This mechanism is provided upstream of the welding cutting heater mechanism in the direction of movement of the product, and is rotated by the contact of the product from the insertion port side to guide the product to the packaging part. During the film welding operation period, the insertion port side A shutter plate configured to prevent the product from entering the packaging part without rotating even when the product comes into contact with the press, and pressurizing so that the shutter plate does not rotate during the film welding operation period Means and
When the control means receives the detection signal obtained by detecting the inserted item by the detection means, the control means projects the opening / closing member to prevent the next inserted article from moving forward, and then retracts the opening / closing member at a predetermined timing. Control the drive means so that
The predetermined timing is a packaging device characterized in that the tip of the next item advanced by retraction of the opening / closing member is a timing at which the pressing means abuts against the shutter plate while pressing the shutter plate. The pressurizing means holds the shutter plate between two sheets of the shutter plate provided opposite to each other with the film sandwiched between the shutter plate while being engaged with the shutter plate in accordance with the welding operation of the welding cutting heater mechanism. 3. The packaging according to claim 2, further comprising an urging member that increases the urging force in conjunction with an operation in which the welding cutting heater mechanism moves from the standby position to the welding position while urging the urging force so as to be pressed at the position. apparatus. A rotatable roller is provided at the front end of the opening / closing member in the protruding direction, and when the product is transported between the front end of the opening / closing member and the first guide member, the roller abuts on the product and rotates. The packaging device according to any one of claims 1 to 3, wherein The packaging apparatus according to claim 4, further comprising a cover portion covering an upper end of the opening / closing member in the protruding direction of the opening / closing member.

Images