JP3024939U - Bag coating device - Google Patents

Abstract

(57) Abstract: [PROBLEMS] To provide a bag covering device capable of easily covering an entire object to be packaged with a bag body, thereby saving labor in the covering work and improving efficiency. SOLUTION: The opening-side peripheral edge portion of the film raw material fed in the vertical direction is sucked and opened by each suction roll, and the opening-side peripheral edge portion of the film raw material sucked by each suction roll is held by each chuck. Pull vertically. The original film film held by each chuck is separately formed into a size and a shape that cover the entire packaged object, and the entire packaged object conveyed to the coating position is covered with the packaging bag. When each chuck is returned to the ascending position, the next film raw material fed out in the vertical direction is sucked by each suction roll and opened, and then the chucks that have been raised and returned hold the opening side peripheral edge portion of the film raw material. It is possible to immediately shift to the covering work, the operation time required for covering the packaging bag with one object to be packaged can be shortened, and the labor can be saved and the efficiency can be improved.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention is a bag covering used for the work of covering the entire packaged object such as a refrigerator, a washing machine, an air conditioner, a machine tool, a manufacturing apparatus, a quality inspection machine with a bag made of synthetic resin or paper. Regarding the device.

[0002]

[Technical field to which the device belongs]

 Conventionally, as a device for covering a packaged object with a packaging bag as in the above-described example, for example, as shown in FIG. The original film f f held by the chucks 92, 92 is held by the chucks 92, 92, and the opening-side peripheral edge of the film raw fabric f is pulled in the left-right direction to open. The original film f held between the chucks 92 and 92 is pulled vertically, and the front and rear surfaces of the original film f on the closed side are heat-welded by a heating head 93, and the upper side of the welded portion is cut by a cutter 94. The packaging bag F, which has been separated and formed by cutting with, and is separated and formed into a predetermined size, covers the entire package B. After that, the gripping by the chucks 92, 92 is released, and the chucks 92, 92 are raised and returned to the initial position. Then, the peripheral edge of the opening side of the film material f fed out and fed is gripped by the chucks 92, 92 to continue the covering work. There is a device to do.

[0003]

[Problems to be solved by the device]

 However, as described above, the periphery of the opening side of the original film f is sandwiched between the chucks 92 and 92 to open, and the packaging bag F sandwiched by the chucks 92 and 92 is towed in the vertical direction to be packaged. Since the entire B is coated, the feeding and feeding of the raw material film f must be stopped or stopped until the chucks 92, 92 are raised and returned to the initial positions, which causes a problem of poor work efficiency. There is. In addition, since the covering size of the packaging bag F becomes large corresponding to the size of the object to be packed B supplied to the covering position, the lifting distance and the operating time of the chucks 92, 92 for pulling the packaging bag F are long. Therefore, there is also a problem that it takes time and time to cover one packaging object B with the packaging bag F.

In view of the above problems, the present invention utilizes the operating time when the bag held by each bag cover is coated on the article to be packaged and holds the bag to be supplied next at each bag opening. By providing the opening, the operation time required to cover the bag with respect to one object to be packaged is shortened, and the bag covering device that can save labor and improve the efficiency of the covering work is provided. To aim.

[0005]

[Action]

 The bag covering device according to claim 1, wherein the bag opening means is driven to hold the opening side peripheral portion of the bag body supplied to the opening position by a pair of bag opening bodies, and the bag body is held by each bag opening body. Open the peripheral edge of the opening side of the product so that it can cover the object to be packaged. The bag covering means is driven to hold the opening side peripheral portion of the bag opened by the pair of bag opening bodies with each bag covering body, and the bag body held with each bag covering body covers the object to be packaged. Vertically drop while keeping it open to the maximum possible size, and cover the bag held by each bag cover with the baggage supplied to the coating position. On the other hand, after holding the opening-side peripheral edge of the bag to be supplied next with a pair of bag openings, and opening the bag, hold the opening-side peripheral edge of the bag with the raised and returned bag covers. Thus, it is possible to immediately shift to the work of coating the bag body with respect to the article to be packaged supplied to the coating position, and the efficiency of the coating work can be improved.

In the bag coating apparatus according to a second aspect of the present invention, in addition to the operation of the first aspect, the bag opening means is driven to cause a pair of suction rolls to be provided at the opening side peripheral edge portion of the bag body supplied to the opening position. The bag is sucked and held by the suction rolls, and the opening-side peripheral edge of the bag that is suction-held by each suction roll is opened in the front-back direction, so that the opening-side peripheral edge of the bag can cover the packaged object. It can be opened and the work of covering the bag can be done easily.

In the bag laying device according to a third aspect of the present invention, in addition to the action of the second aspect, the bag opening means is driven to cause each suction hole formed on the suction surface of each suction roll to have an opening side of the bag body. The opening side peripheral portion of the bag body is sucked and held by the negative pressure generated in each suction hole of each suction roll by adhering it to the peripheral portion, and the negative pressure generating means is driven. It can be reliably peeled off, and opening work of the bag can be done easily.

In the bag laying apparatus according to a fourth aspect of the present invention, in addition to the function of the second aspect, the bag opening means is driven to attach each adhesive attached to the suction surface of each suction roll to the opening side of the bag. The peripheral edge of the bag is adhered to and held by the adhesive force of each adhesive attached to each suction roll, so that the peripheral edge of the bag on the opening side can be reliably peeled off. Opening work can be done easily.

According to the bag covering device of the fifth aspect, in addition to the operation of the first aspect, the bag opening means is driven to cause the opening side peripheral edge portion of the bag body supplied to the opening position to form a pair of opening chucks. The bag is held by each opening chuck, and the opening side edge of the bag held by each opening chuck is opened to a size that can cover the packaged object, and the opening side edge of the bag is peeled off by negative pressure or adhesion. As compared with the method described above, the opening operation of the bag can be performed more reliably.

In addition to the effect of the above-mentioned claim 1, 2, 3, 4 or 5, the bag coating device according to claim 6 drives the bag coating means to open the bag with a pair of bag opening bodies. Hold the peripheral edge of the body on the opening side with each coated chuck. The bag held by each coated chuck is vertically lowered with the bag opened to a size capable of covering the object to be packaged, and the object supplied to the coating position is covered with the bag held by each coated chuck. This ensures that the work of covering the entire packaged object with the bag can be performed.

[0011]

[Effect of device]

 According to this invention, the opening side peripheral edge of the bag body to be supplied next is held by each bag opening body by using the operation time when the bag body held by each bag covering body is covered with the object to be packaged. Therefore, unlike the conventional device, it is not necessary to stop or suspend the opening work until each chuck 92 is lifted back to the initial position, and each bag cover is lifted and returned, and then supplied to the covering position. It is possible to immediately shift to the work of covering the bag with the packaged object, and the time loss of the entire work can be significantly reduced. In addition, the operation time required to cover one bag with the bag is shortened, and labor can be saved and efficiency can be improved.

[0012]

【Example】

 The drawings show the bag coating apparatus of the first embodiment used in the work of coating the entire packaged object with a packaging bag. In FIGS. 1 and 2, the bag coating apparatus 1 is located at the upper center of the apparatus. A film feeding mechanism 2 for feeding the synthetic resin film roll f to the set separating position, a film separating mechanism 3 for separating the film roll f supplied to the separating position to a predetermined size, and a lower part of the same position. A bag opening mechanism 4 for opening the packaging bag F delivered to the opening position, a bag covering mechanism 5 for covering the packaging bag F with the object B to be packaged conveyed to the covering position below the same position, and a lower part of the same device. It is composed of a transfer conveyor 6 that conveys the object B to be packed of a predetermined size to the covering position set in the central portion.

The film supply mechanism 2 described above folds a tubular film material f formed of a transparent or translucent synthetic resin into a flat state (for example, a gusset folded state or a flat folded state) and winds it into a roll. Each of the guide rolls 8, 9, 10, 11, which is rotated and supported by a film loading unit 7 disposed on one lower side of the apparatus and which is wound in a roll shape, is axially supported on a feeding path. An original amount f of air is preliminarily injected into the film 12, the dancer roll 13, the feed roll 14, and the press roll 15 to stretch the original film f. In addition, the rolls 14 and 15 are rotatably supported on the upper side of the film loading section 7, and the presser roll 15 is rotatably supported on the front end of the movable arm 16 which is rotatably supported on the upper side of the feed roll 14. A pressing cylinder 17 disposed on the upper side of the roll 15 is connected to the movable arm 16, and the upper and lower surfaces of the original film f are pressed by the rolls 14 and 15 by the operation of the pressing cylinder 17. In addition, the driving force of the feed motor 18 disposed on the rear side of the feed roll 14 causes the feed roll 14 to rotate in the feed direction via the sprockets 19 and 20 and the drive chain 21, and is pressed by the rolls 14 and 15. The original film f that has been prepared is fed out and supplied.

Further, the rolls 22 and 23 are rotatably supported above the separating position, and the presser roll 23 is rotatably supported at the lower end of the movable arm 24 which is rotatably supported on the upper side of the feed roll 22. The pressing cylinder 25 arranged on the rear side is connected to the movable arm 24, and the front and rear surfaces of the original film f are pressed by the rolls 22 and 23 by the operation of the pressing cylinder 25. In addition, the driving force of the feeding motor 26 arranged on the rear side of the feeding roll 22 causes the feeding roll 22 to rotate in the feeding direction via the sprockets 27 and 28 and the drive chain 29, so that the respective rolls 22 and 23 The pressed film original fabric f is fed out and supplied.

As shown in FIG. 3, the above-described film separating mechanism 3 has a cutting cutter 30 and a heating head 35, which will be described later, arranged in a vertical direction so as to face the front and rear surfaces of the film raw fabric f supplied to the separation position. The advancing / retreating cylinder 32 disposed on the rear side of the cutting cutter 30 is connected to the movable frame 33, the cutting cutter 30 is attached to the upper stage of the frame so as to face a receiving head 31 described later, and the lower stage of the frame is described later. The receiving head 36 is attached so as to face the heating head 35, and the rodless cutting cylinder 34 disposed on the rear side of the receiving head 36 is connected to the cutting cutter 30.

An advancing / retreating cylinder 37 arranged on the rear side of the heating head 35 is connected to a movable frame 38, and a receiving head 31 is attached to the upper stage of the frame so as to face the cutting cutter 30 described above. The heating head 35 is attached to the lower stage so as to face the receiving head 36 described above, and a large number of unheated portions such as grooves or recesses are formed on the heating surface of the heating head 35. In addition, the support rollers 39 and 39 are axially supported so as to face the front and rear surfaces of the original film f fed to the lower part of the separation position, and the support frames 40 and 40 are installed on the lower side of the movable frames 33 and 38. The support rollers 39, 39 are mounted on a shaft, and the pressing cylinders 41, 41 arranged on the rear side are connected to the support frames 40, 40.

As shown in FIGS. 4 and 5, in the bag opening mechanism 4 described above, the mounting frames 42, 42 are installed on both sides of the opening position set at the lower part of the separating position, and the mounting frames 42, 42 are Each sprocket 45, which is slidably engaged with both ends of each movable frame 44, 44 on each rail 43, 43 laid on the upper surface side, is axially supported by the front and rear ends of each mounting frame 42, 42, 45, the moving chains 47 and 47 are stretched between the sprocket 45 and the sprockets 46, 46, and the rotation centers of the sprockets 45 and 45 are directly connected to each other so that power can be transmitted. Is connected to the front movable frame 44, the other end is connected to the rear movable frame 44, and the sprockets 49, 50 and the drive chain 51 are driven by the driving force of the drive motor 48 arranged on the side of the frame. Forward and reverse of each moving chain 47, 47 via The advancing position for adsorbing and holding the opening side peripheral edge of the original film f that has been rolled out and fed to the opening position, and the opening side peripheral edge of the original film f having a size capable of covering the object B to be packaged. The suction rolls 52, 52 mounted on the movable frames 44, 44 are moved back and forth at the retracted position where they are opened.

As shown in FIGS. 6 and 7, each of the suction rolls 52 and 52 described above faces the opening-side front and rear surface of the film raw fabric f at the center of the lower end side of each movable frame 44, 44. Each suction roll 52, 52 formed in a dimension longer than the width of the opposite f is mounted on the shaft, and a plurality of suction holes 52a having a predetermined shape are formed on the suction side peripheral surface of each suction roll 52, 52. The suction rollers 52, 52 are formed at a predetermined interval in the length direction, and suction means (not shown) such as a suction blower or a vacuum pump is connected to one end of each of the suction rollers 52, 52. Further, the gear 53 fixed to one end of the suction roll 52 and the rack 54 attached to one end of the movable frame 44 are meshed with each other, and the rotation cylinder 55 fixed to the same end is attached to the rack 54. The suction roll 52 is directly and reversely rotated through the gear 53 and the rack 54 by the operation of the rotation cylinder 55, and the opening-side front and rear surfaces of the original film f fed to the opening position below the separation position. The suction rolls 52 are normally and reversely rotated to a lateral position in which the suction holes 52a are rotated in a direction facing each other and a downward position in which the suction holes 52a are rotated in a direction to face each pressing plate 57 described later. .

Further, the movable plates 58 and 58 are respectively engaged with the rail 56 and the screw shaft 57 provided on the rear surface side of the movable frame 44 so as to be slidable left and right, and the lower end portions of the movable plates 58 and 58 on the rear surface side. The pressing cylinders 59, 59 fixed to the above are directly connected to the rear end side upper surface portions of the pressing plates 60, 60, and are sucked and held by the suction roll 52 by the synchronous operation of the pressing cylinders 59, 59. The pressing plates 60, 60 are moved up and down to a pressing position for pressing the opening side peripheral edge of the original film f and an open position for releasing the pressing of the original film f. The screw shaft 57 described above is rotated by, for example, a rotating means such as a drive motor or the operator's hand, so that the pressing plates 60, 6 are located at positions facing the opening side peripheral edge of the original film f. Move and adjust 0.

As shown in FIGS. 1 and 2, in the bag covering mechanism 5 described above, the mounting frames 61, 61 are erected on both sides of the covering position set at the lower part of the opening position, and the mounting frames 61, 61 are The rear side intermediate part of each movable frame 63, 63 is vertically slidably engaged with each rail 62, 62 erected on the opposite side of, and pivotally supported by the upper and lower ends of each mounting frame 61, 61. Each lifting chain 66, 66 is stretched between each sprocket 64, 64 and each sprocket 65, 65, and the rotation center of each sprocket 64, 64 is directly connected so that power can be transmitted. One end side of 66, 66 is connected to each movable frame 63, 63, and by the driving force of a drive motor 67 arranged on one side of the lower part, each for raising and lowering through each sprocket 68, 69 and drive chain 70. Reverse the chains 66 and 66 to move the Each movable frame 63, is placed at a raised position for holding the opening side peripheral edge of the original film f opened by the rolls 52, 52 and a lowered position set below the pallet P on which the article B to be packaged is placed. The pair of chucks 71, 71 attached to 63 are moved up and down.

Further, the lower ends of the mounting frames 61, 61 are slid back and forth by the rails 72, 72 laid on both lower sides of the transfer conveyor 6 and the screw shaft 73 mounted between the both sides. The upper ends of the mounting frames 61, 61 are slidably engaged with the screw shafts 74, 74 and the guide shafts 75, 75 installed on both upper sides of the bag opening mechanism 4 so as to be slidable back and forth. Then, the interlocking chains 78 1 and 78 2 are provided between the sprockets 76 and 76 fixed to both ends of the screw shaft 73 and the sprockets 77 and 77 fixed to one end of the screw shafts 74 and 74, respectively. A handle 79 which is stretched and fixed to one end of the screw shaft 73 is rotated by an operator's hand, or the screw shaft 73 is normally or reversely rotated by a rotating means such as a drive motor. Depending on the size of the packaging bag F and the object to be packaged B, the intervals between the mounting frames 61, 61 may be set. In addition to being adjusted, the guide rollers 80 are pivotally supported on the lower end side facing surfaces of the mounting frames 61, 61 so as to face both end surfaces of the pallet P conveyed to the coating position on the transfer conveyor 6. There is.

As shown in FIGS. 8 and 9, each of the above-mentioned chucks 71 ... Allows the movable plates 83, 83 to be slidable left and right on a rail 81 and a screw shaft 82 which are installed on the front side of the movable frame 63. The forward and backward moving cylinders 84, 84, which are engaged with each other and fixed to the lower ends of the movable plates 83, 83, are directly connected to the rear upper ends of the support plates 85, 85, respectively, and The L-shaped holding arms 71a and 71a are fixed to the upper ends of the respective bearings 85a and 85a formed at the ends, and the holding arms 71b and 71b are vertically moved to the center of the protruding sides of the respective bearings 85a and 85a. A rotatably rotatably supported shaft is provided with a synthetic rubber anti-slip member 86 made of, for example, silicon rubber or the like on the sandwiching surfaces of the sandwiching arms 71a, 71b so as to project the bearings 85a, 85a. On the upper side of the side of each holding arm 71a, 71a The receiving plates 87, 87 are fixed by projecting forward from the holding surface.

Further, the gear 88 directly connected to the pivotal support portion of the holding arm 71a and the rack 89 attached to the central portion on the front surface side of the support plate 85 are meshed with each other, and the holding cylinder 90 fixed to the end portion on the same side is attached. Directly connected to the rack 89, the holding cylinder 71 is actuated to vertically move the holding arm 71b via the gear 88 and the rack 89, and the opening side peripheral edge of the original film f opened by the suction roll 52 described above. The holding arm 71b is rotated between a closed position for holding the portion and an open position where the holding of the packaging bag F is released.

Further, the handle 91 fixed to one end of the screw shaft 82 is rotated by the operator's hand, or the screw shaft 82 is normally or reversely rotated by a rotating means such as a drive motor. The chuck 71 is moved and adjusted to a position facing the opening side peripheral portion of the original film f opened by the suction roll 52.

The illustrated embodiment is configured as described above, and the working operation when the entire bag B is covered with the packaging bag F by the bag coating apparatus 1 will be described below. First, as shown in FIGS. 1 and 2, the pallet P on which the object B to be packaged of a predetermined size is placed is conveyed to the coating position on the transfer conveyor 6. The film feed mechanism 2 is driven to feed out the film roll f wound in a roll shape to the opening position, and the film roll f is pressed by the respective support rollers 39, 39, and then, as shown in FIG. The opening mechanism 4 is driven to hold the front and rear surfaces of the original film f on the opening side by suction with the suction rolls 52 and 52, and the suction rolls 52 and 52 are rotated in opposite directions to open the raw film f. The front and rear surfaces on the mouth side are peeled off, and the peripheral edge portion on the opening side of the original film f adsorbed and held by the adsorbing rolls 52, 52 is pressed by the pressing plates 60. .. are pulled by the suction rolls 52, 52 and the pressing plates 60 ... The peripheral edge of f on the opening side is opened.

Next, as shown in FIG. 11, the bag cover mechanism 5 is driven to hold the chucks 71 ... Standing in the raised position by suction by the suction rolls 52, 52. The chuck 71 is moved to the inside of the peripheral portion, and the chucks 71 ... Hold the opening-side peripheral portion of the original film f. After the suction by the suction rolls 52, 52 is released and the pressing by the pressing plates 60 ... Is released, air is taken into the inside of the film original fabric f and the opening side of the film original fabric f held by each chuck 71. The peripheral portion is pulled in the vertical direction to coat the upper outer surface of the article B to be packaged conveyed to the coating position. As shown in FIG. 3, the film separating mechanism 3 is driven to move the film fed to the separating position while the opening side peripheral edge of the original film f held by each chuck 71 ... The front and rear surfaces of the original fabric f on the closed side are partially welded in the width direction by the heating head 35 to form a large number of unwelded parts (not shown) on the closed side of the packaging bag F, and the heat-welded film of the original fabric f is formed. The upper part is cut by the cutting cutter 30 in the width direction, and the packaging bag F is separated and formed in a size and shape so as to cover the entire article B to be packaged. After that, the heating head 35 and the cutting cutter 30 are returned to the initial position, and the respective support rollers 39, 39 are returned to the initial position.

Next, unnecessary air is degassed from the unwelded portion (not shown) formed on the closed side of the packaging bag F, and the periphery of the opening side of the packaging bag F held by the chucks 71 ... And the packaging bag F is coated on the whole packaged object B conveyed to the coating position. After vertically lowering each chuck 71 ... to the lowering position, the gripping by each chuck 71 ... Is released and retracted to the outside of the opening side peripheral edge of the packaging bag F, and the initial state with each chuck 71 ... Opened. Raise to the position and return. After the covering work is completed, the bag-covered object B is conveyed to the packing step (not shown) by the transfer conveyor 6 while being placed on the pallet P, and the next object placed on the transfer conveyor 6 is transferred. The package B is transported to the coating position and the packaging bag F is continuously coated.

Further, when the chucks 71 are returned to the ascended state, the film supply mechanism 2 is driven to feed out and supply the original film f wound in a roll shape to the opening position. The bag opening mechanism 4 is driven to suck and hold the opening-side front and rear surfaces of the original film f with the suction rolls 52 and 52, and peel the opening-side peripheral edge of the original film f to the suction rolls 52 and 52. Immediately after pressing the 52 and the pressing plates 60 ... to open the opening side peripheral edge of the original film f to a size capable of covering the entire package B, the bag covering mechanism 5 is driven, The chucks 71 returned to the raised position hold the opening side peripheral edge of the original film f, so that the work to cover the packaging bag F with the object B to be packaged conveyed to the covering position immediately starts. You can

As described above, by utilizing the operation time when the packaging bag F held by the chucks 71 ... Since the suction rolls 52 and 52 open by suction by the suction rolls 52, 52, it is not necessary to stop or suspend the opening work until the chucks 92 ... 71 ... It is possible to immediately shift to the work of holding the opening side peripheral edge of the original film f and covering the packaging bag F to the object to be packed B supplied to the covering position, and the time loss of the whole work is reduced. It can be greatly reduced. At the same time, the operation time required to cover one packaging object B with the packaging bag F can be shortened, and labor can be saved and efficiency can be improved.

FIG. 12 shows the bag opening mechanism 4 of the second embodiment in which the opening side peripheral edge of the original film f is opened by the adhesive force of the adhesives 92a, 92a attached to the pair of suction rolls 92, 92. The pressure-sensitive adhesives 92a, 92a attached to the adhesive surface sides of the suction rolls 92, 92 are pressed on the front and rear surfaces of the opening side of the original film f to press the pressure-sensitive adhesives 92a, 92a attached to the suction rolls 92, 92, respectively. The peripheral edge portion of the original film f on the opening side is separated by the adhesive force of 92a, and the peripheral edge portion of the original film f on the opening side is pressed by the suction rolls 92, 92 and the pressing plates 60. Since it is opened to a size that can be covered with respect to, the operating time when the packaging bag F held by the chucks 71 ... The periphery of the opening side of the unrolled film roll f The part can be opened by each of the suction rolls 92, 92, and the operation time required to cover one packaging object B with the packaging bag F can be shortened.

FIG. 13 shows a bag opening mechanism 4 of a third embodiment in which the opening side peripheral portion of the original film f is held and held by a pair of holding claws 93, 93, and the opening side of the original film f is opened. The holding claws 93, 93 are alternately held on the front and rear surfaces and held by the holding claws 93, 93, and the edge of the opening side of the original film f is peeled off by the surface resistance generated at the holding portions of the holding claws 93, 93. , 93, the opening-side peripheral edge of the original film f held between the chucks and 93 is opened to a size capable of covering the object to be packaged B. Therefore, as in the first embodiment, the packing bag F held by the chucks 71 ... Using the operating time when the object B to be packaged is covered, the opening side peripheral edge of the film raw material f to be fed next can be opened by the holding claws 93, 93. Required when covering packaging bag F on B The operating time can be shortened.

In the correspondence between the configuration of the present invention and the above-described embodiment, the bag body of the present invention corresponds to the packaging bag F of the embodiment, and the bag opening body is similar to the suction rolls 52 and 92. The bag opening means includes a mounting frame 42, a rail 43, a movable frame 44, sprockets 45, 46, 49, 50, a moving chain 47, a drive motor 48, and a drive motor 48. Corresponding to the chain 51, the bag covering corresponds to the chuck 71, and the bag covering means includes a mounting frame 61, a rail 62, a movable frame 63, sprockets 64, 65, 68, 69, and lifting and lowering. It corresponds to the chain 66, the drive motor 67, and the drive chain 70, the adhesive body corresponds to the adhesive agent 92a, the opening chuck corresponds to the holding claw 93, the coating chuck corresponds to the chuck 71, The negative pressure generating means Also corresponding to the intake means such as suction blower or a vacuum pump (not shown), this invention is not limited only to the above-mentioned arrangement of the embodiment.

In the above-mentioned embodiment, the packaging bag F formed by separating the film raw material f wound into a roll into a predetermined size is coated on the article to be packaged B. For example, a package formed in a predetermined size is used. The bag F may be vertically fed out from the upper part of the apparatus to cover the article B to be packaged, or the original film f or the packaging bag F having a large number of ventilation holes (not shown) may be used. The configuration is not limited to the above.

[Submission date] December 8, 1995

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction content] [Detailed description of the device]

[0001]

[0001]

[0002]

[Industrial applications]

 This invention is a bag covering used for the work of covering the entire packaged object such as a refrigerator, a washing machine, an air conditioner, a machine tool, a manufacturing apparatus, a quality inspection machine with a bag made of synthetic resin or paper. Regarding the device.

[0003]

[0002]

[0004]

[Prior art]

 Conventionally, as a device for covering a packaged object with a packaging bag as in the above-described example, for example, as shown in FIG. The original film f f held by the chucks 92, 92 is held by the chucks 92, 92, and the opening-side peripheral edge of the film raw fabric f is pulled in the left-right direction to open. The original film f held between the chucks 92 and 92 is pulled vertically, and the front and rear surfaces of the original film f on the closed side are heat-welded by a heating head 93, and the upper side of the welded portion is cut by a cutter 94. The packaging bag F, which has been separated and formed by cutting with, and is separated and formed into a predetermined size, covers the entire package B. After that, the gripping by the chucks 92, 92 is released, and the chucks 92, 92 are raised and returned to the initial position. Then, the peripheral edge of the opening side of the film material f fed out and fed is gripped by the chucks 92, 92 to continue the covering work. There is a device to do.

[0005]

[0003]

[0006]

[Problems to be solved by the device]

 However, as described above, the periphery of the opening side of the original film f is sandwiched between the chucks 92 and 92 to open, and the packaging bag F sandwiched by the chucks 92 and 92 is towed in the vertical direction to be packaged. Since the entire B is coated, the feeding and feeding of the raw material film f must be stopped or stopped until the chucks 92, 92 are raised and returned to the initial positions, which causes a problem of poor work efficiency. There is. In addition, since the covering size of the packaging bag F becomes large corresponding to the size of the object to be packed B supplied to the covering position, the lifting distance and the operating time of the chucks 92, 92 for pulling the packaging bag F are long. Therefore, there is also a problem that it takes time and time to cover one packaging object B with the packaging bag F.

[0007]

In view of the above problems, the present invention utilizes the operating time when the bag held by each bag cover is coated on the article to be packaged and holds the bag to be supplied next at each bag opening. By providing the opening, the operation time required to cover the bag with respect to one object to be packaged is shortened, and the bag covering device that can save labor and improve the efficiency of the covering work is provided. To aim.

[0008]

[0005]

[0009]

[Action]

 The bag covering device according to claim 1, wherein the bag opening means is driven to hold the opening side peripheral portion of the bag body supplied to the opening position by a pair of bag opening bodies, and the bag body is held by each bag opening body. Open the peripheral edge of the opening side of the product so that it can cover the object to be packaged. The bag covering means is driven to hold the opening side peripheral portion of the bag opened by the pair of bag opening bodies with each bag covering body, and the bag body held with each bag covering body covers the object to be packaged. Vertically drop while keeping it open to the maximum possible size, and cover the bag held by each bag cover with the baggage supplied to the coating position. On the other hand, after holding the opening-side peripheral edge of the bag to be supplied next with a pair of bag openings, and opening the bag, hold the opening-side peripheral edge of the bag with the raised and returned bag covers. Thus, it is possible to immediately shift to the work of coating the bag body with respect to the article to be packaged supplied to the coating position, and the efficiency of the coating work can be improved.

[0010]

In the bag coating apparatus according to a second aspect of the present invention, in addition to the operation of the first aspect, the bag opening means is driven to cause a pair of suction rolls to be provided at the opening side peripheral edge portion of the bag body supplied to the opening position. The bag is sucked and held by the suction rolls, and the opening-side peripheral edge of the bag that is suction-held by each suction roll is opened in the front-back direction, so that the opening-side peripheral edge of the bag can cover the packaged object. It can be opened and the work of covering the bag can be done easily.

[0011]

In the bag covering device according to a third aspect of the present invention, in addition to the function of the second aspect, the bag opening means is driven to cause each suction hole formed on the suction surface of each suction roll to open the side of the bag body. The opening side peripheral portion of the bag body is sucked and held by the negative pressure generated in each suction hole of each suction roll by adhering it to the peripheral portion, and the negative pressure generating means is driven. It can be reliably peeled off, and opening work of the bag can be done easily.

[0012]

In the bag coating apparatus according to a fourth aspect of the present invention, in addition to the operation of the second aspect, the bag opening means is driven to attach each adhesive body attached to the suction surface of each suction roll to the opening side of the bag body. Since the peripheral edge of the bag is adhered and the peripheral edge of the bag on the opening side is adsorbed and held by the adhesive force of each adhesive attached to each suction roll, the peripheral edge of the bag on the opening side can be reliably peeled off. Opening work can be done easily.

[0013]

According to the bag covering device of the fifth aspect, in addition to the operation of the first aspect, the bag opening means is driven to cause the opening side peripheral edge portion of the bag body supplied to the opening position to form a pair of opening chucks. The bag is held by each opening chuck, and the opening side edge of the bag held by each opening chuck is opened to a size that can cover the packaged object, and the opening side edge of the bag is peeled off by negative pressure or adhesion. As compared with the method described above, the opening operation of the bag can be performed more reliably.

[0014]

In addition to the effect of the above-mentioned claim 1, 2, 3, 4 or 5, the bag coating device according to claim 6 drives the bag coating means to open the bag with a pair of bag opening bodies. Hold the peripheral edge of the body on the opening side with each coated chuck. The bag held by each coated chuck is vertically lowered with the bag opened to a size capable of covering the object to be packaged, and the object supplied to the coating position is covered with the bag held by each coated chuck. This ensures that the work of covering the entire packaged object with the bag can be performed.

[0015]

[0011]

[0016]

EFFECTS OF THE INVENTION According to the present invention, the operating time when the bag held by each bag cover is coated on the object to be packaged, the opening-side peripheral edge of the bag to be supplied next is set to each Since it is held and opened by the bag opening body, it is not necessary to stop or pause the opening work until each chuck 92 has returned to the initial position as in the conventional device. As a result, it is possible to immediately shift to the work of covering the bag body with respect to the packaged goods supplied to the covering position, and the time loss of the whole work can be greatly reduced. In addition, the operation time required to cover one bag with the bag is shortened, and labor can be saved and efficiency can be improved.

[0017]

[0012]

[0018]

【Example】

 The drawings show the bag coating apparatus of the first embodiment used in the work of coating the entire packaged object with a packaging bag. In FIGS. 1 and 2, the bag coating apparatus 1 is located at the upper center of the apparatus. A film feeding mechanism 2 for feeding the synthetic resin film roll f to the set separating position, a film separating mechanism 3 for separating the film roll f supplied to the separating position to a predetermined size, and a lower part of the same position. A bag opening mechanism 4 for opening the packaging bag F delivered to the opening position, a bag covering mechanism 5 for covering the packaging bag F with the object B to be packaged conveyed to the covering position below the same position, and a lower part of the same device. It is composed of a transfer conveyor 6 that conveys the object B to be packed of a predetermined size to the covering position set in the central portion.

[0019]

The film supply mechanism 2 described above folds a tubular film material f formed of a transparent or translucent synthetic resin into a flat state (for example, a gusset folded state or a flat folded state) and winds it into a roll. Each of the guide rolls 8, 9, 10, 11, which is rotated and supported by a film loading unit 7 disposed on one lower side of the apparatus and which is wound in a roll shape, is axially supported on a feeding path. An original amount f of air is preliminarily injected into the film 12, the dancer roll 13, the feed roll 14, and the press roll 15 to stretch the original film f. In addition, the rolls 14 and 15 are rotatably supported on the upper side of the film loading section 7, and the presser roll 15 is rotatably supported on the front end of the movable arm 16 which is rotatably supported on the upper side of the feed roll 14. A pressing cylinder 17 disposed on the upper side of the roll 15 is connected to the movable arm 16, and the upper and lower surfaces of the original film f are pressed by the rolls 14 and 15 by the operation of the pressing cylinder 17. In addition, the driving force of the feed motor 18 disposed on the rear side of the feed roll 14 causes the feed roll 14 to rotate in the feed direction via the sprockets 19 and 20 and the drive chain 21, and is pressed by the rolls 14 and 15. The original film f that has been prepared is fed out and supplied.

[0020]

Further, the rolls 22 and 23 are rotatably supported above the separating position, and the presser roll 23 is rotatably supported at the lower end of the movable arm 24 which is rotatably supported on the upper side of the feed roll 22. The pressing cylinder 25 arranged on the rear side is connected to the movable arm 24, and the front and rear surfaces of the original film f are pressed by the rolls 22 and 23 by the operation of the pressing cylinder 25. In addition, the driving force of the feeding motor 26 arranged on the rear side of the feeding roll 22 causes the feeding roll 22 to rotate in the feeding direction via the sprockets 27 and 28 and the drive chain 29, so that the respective rolls 22 and 23 The pressed film original fabric f is fed out and supplied.

[0021]

As shown in FIG. 3, the above-described film separating mechanism 3 has a cutting cutter 30 and a heating head 35, which will be described later, arranged in a vertical direction so as to face the front and rear surfaces of the film raw fabric f supplied to the separation position. The advancing / retreating cylinder 32 disposed on the rear side of the cutting cutter 30 is connected to the movable frame 33, the cutting cutter 30 is attached to the upper stage of the frame so as to face a receiving head 31 described later, and the lower stage of the frame is described later. The receiving head 36 is attached so as to face the heating head 35, and the rodless cutting cylinder 34 disposed on the rear side of the receiving head 36 is connected to the cutting cutter 30.

[0022]

An advancing / retreating cylinder 37 arranged on the rear side of the heating head 35 is connected to a movable frame 38, and a receiving head 31 is attached to the upper stage of the frame so as to face the cutting cutter 30 described above. The heating head 35 is attached to the lower stage so as to face the receiving head 36 described above, and a large number of unheated portions such as grooves or recesses are formed on the heating surface of the heating head 35. In addition, the support rollers 39 and 39 are axially supported so as to face the front and rear surfaces of the original film f fed to the lower part of the separation position, and the support frames 40 and 40 are installed on the lower side of the movable frames 33 and 38. The support rollers 39, 39 are mounted on a shaft, and the pressing cylinders 41, 41 arranged on the rear side are connected to the support frames 40, 40.

[0023]

As shown in FIGS. 4 and 5, in the bag opening mechanism 4 described above, the mounting frames 42, 42 are installed on both sides of the opening position set at the lower part of the separating position, and the mounting frames 42, 42 are Each sprocket 45, which is slidably engaged with both ends of each movable frame 44, 44 on each rail 43, 43 laid on the upper surface side, is axially supported by the front and rear ends of each mounting frame 42, 42, 45, the moving chains 47 and 47 are stretched between the sprocket 45 and the sprockets 46, 46, and the rotation centers of the sprockets 45 and 45 are directly connected to each other so that power can be transmitted. Is connected to the front movable frame 44, the other end is connected to the rear movable frame 44, and the sprockets 49, 50 and the drive chain 51 are driven by the driving force of the drive motor 48 arranged on the side of the frame. Forward and reverse of each moving chain 47, 47 via The advancing position for adsorbing and holding the opening side peripheral edge of the original film f that has been rolled out and fed to the opening position, and the opening side peripheral edge of the original film f having a size capable of covering the object B to be packaged. The suction rolls 52, 52 mounted on the movable frames 44, 44 are moved back and forth at the retracted position where they are opened.

[0024]

As shown in FIGS. 6 and 7, each of the suction rolls 52 and 52 described above faces the opening-side front and rear surface of the film raw fabric f at the center of the lower end side of each movable frame 44, 44. Each suction roll 52, 52 formed in a dimension longer than the width of the opposite f is mounted on the shaft, and a plurality of suction holes 52a having a predetermined shape are formed on the suction side peripheral surface of each suction roll 52, 52. The suction rollers 52, 52 are formed at a predetermined interval in the length direction, and suction means (not shown) such as a suction blower or a vacuum pump is connected to one end of each of the suction rollers 52, 52. Further, the gear 53 fixed to one end of the suction roll 52 and the rack 54 attached to one end of the movable frame 44 are meshed with each other, and the rotation cylinder 55 fixed to the same end is attached to the rack 54. The suction roll 52 is directly and reversely rotated through the gear 53 and the rack 54 by the operation of the rotation cylinder 55, and the opening-side front and rear surfaces of the original film f fed to the opening position below the separation position. The suction rolls 52 are normally and reversely rotated to a lateral position in which the suction holes 52a are rotated in a direction facing each other and a downward position in which the suction holes 52a are rotated in a direction to face each pressing plate 57 described later. .

[0025]

Further, the movable plates 58 and 58 are respectively engaged with the rail 56 and the screw shaft 57 provided on the rear surface side of the movable frame 44 so as to be slidable left and right, and the lower end portions of the movable plates 58 and 58 on the rear surface side. The pressing cylinders 59, 59 fixed to the above are directly connected to the rear end side upper surface portions of the pressing plates 60, 60, and are sucked and held by the suction roll 52 by the synchronous operation of the pressing cylinders 59, 59. The pressing plates 60, 60 are moved up and down to a pressing position for pressing the opening side peripheral edge of the original film f and an open position for releasing the pressing of the original film f. The screw shaft 57 described above is rotated by, for example, a rotating means such as a drive motor or the operator's hand, so that the pressing plates 60, 6 are located at positions facing the opening side peripheral edge of the original film f. Move and adjust 0.

[0026]

As shown in FIGS. 1 and 2, in the bag covering mechanism 5 described above, the mounting frames 61, 61 are erected on both sides of the covering position set at the lower part of the opening position, and the mounting frames 61, 61 are The rear side intermediate part of each movable frame 63, 63 is vertically slidably engaged with each rail 62, 62 erected on the opposite side of, and pivotally supported by the upper and lower ends of each mounting frame 61, 61. Each lifting chain 66, 66 is stretched between each sprocket 64, 64 and each sprocket 65, 65, and the rotation center of each sprocket 64, 64 is directly connected so that power can be transmitted. One end side of 66, 66 is connected to each movable frame 63, 63, and by the driving force of a drive motor 67 arranged on one side of the lower part, each for raising and lowering through each sprocket 68, 69 and drive chain 70. Reverse the chains 66 and 66 to move the Each movable frame 63, is placed in a raised position for holding the opening side peripheral edge of the original film f opened by the rolls 52, 52 and a lowered position set below the pallet P on which the article B to be packaged is placed. The pair of chucks 71, 71 attached to 63 are moved up and down.

[0027]

Further, the lower ends of the mounting frames 61, 61 are slid back and forth by the rails 72, 72 laid on both lower sides of the transfer conveyor 6 and the screw shaft 73 mounted between the both sides. The upper ends of the mounting frames 61, 61 are slidably engaged with the screw shafts 74, 74 and the guide shafts 75, 75 installed on both upper sides of the bag opening mechanism 4 so as to be slidable back and forth. Then, the interlocking chains 78 1 and 78 2 are provided between the sprockets 76 and 76 fixed to both ends of the screw shaft 73 and the sprockets 77 and 77 fixed to one end of the screw shafts 74 and 74, respectively. A handle 79 which is stretched and fixed to one end of the screw shaft 73 is rotated by an operator's hand, or the screw shaft 73 is normally or reversely rotated by a rotating means such as a drive motor. Depending on the size of the packaging bag F and the object to be packaged B, the intervals between the mounting frames 61, 61 may be set. In addition to being adjusted, the guide rollers 80 are pivotally supported on the lower end side facing surfaces of the mounting frames 61, 61 so as to face both end surfaces of the pallet P conveyed to the coating position on the transfer conveyor 6. There is.

[0028]

As shown in FIGS. 8 and 9, each of the above-mentioned chucks 71 ... Allows the movable plates 83, 83 to be slidable left and right on a rail 81 and a screw shaft 82 which are installed on the front side of the movable frame 63. The forward and backward moving cylinders 84, 84, which are engaged with each other and fixed to the lower ends of the movable plates 83, 83, are directly connected to the rear upper ends of the support plates 85, 85, respectively, and The L-shaped holding arms 71a and 71a are fixed to the upper ends of the respective bearings 85a and 85a formed at the ends, and the holding arms 71b and 71b are vertically moved to the center of the protruding sides of the respective bearings 85a and 85a. A rotatably rotatably supported shaft is provided with a synthetic rubber anti-slip member 86 made of, for example, silicon rubber or the like on the sandwiching surfaces of the sandwiching arms 71a, 71b so as to project the bearings 85a, 85a. On the upper side of the side of each holding arm 71a, 71a The receiving plates 87, 87 are fixed by projecting forward from the holding surface.

[0029]

Further, the gear 88 directly connected to the pivotal support portion of the holding arm 71a and the rack 89 attached to the central portion on the front surface side of the support plate 85 are meshed with each other, and the holding cylinder 90 fixed to the end portion on the same side is attached. Directly connected to the rack 89, the holding cylinder 71 is actuated to vertically move the holding arm 71b via the gear 88 and the rack 89, and the opening side peripheral edge of the original film f opened by the suction roll 52 described above. The holding arm 71b is rotated between a closed position for holding the portion and an open position where the holding of the packaging bag F is released.

[0030]

Further, the handle 91 fixed to one end of the screw shaft 82 is rotated by the operator's hand, or the screw shaft 82 is normally or reversely rotated by a rotating means such as a drive motor. The chuck 71 is moved and adjusted to a position facing the opening side peripheral portion of the original film f opened by the suction roll 52.

[0031]

The illustrated embodiment is configured as described above, and the working operation when the entire bag B is covered with the packaging bag F by the bag coating apparatus 1 will be described below. First, as shown in FIGS. 1 and 2, the pallet P on which the object B to be packaged of a predetermined size is placed is conveyed to the coating position on the transfer conveyor 6. The film feed mechanism 2 is driven to feed out the film roll f wound in a roll shape to the opening position, and the film roll f is pressed by the respective support rollers 39, 39, and then, as shown in FIG. The opening mechanism 4 is driven to hold the front and rear surfaces of the original film f on the opening side by suction with the suction rolls 52, 52, and the suction rolls 52, 52 are rotated in opposite directions to open the raw film f. The front and rear surfaces on the mouth side are peeled off, and the peripheral edge portion on the opening side of the original film f adsorbed and held by the adsorbing rolls 52, 52 is pressed by the pressing plates 60. .. are pulled by the suction rolls 52, 52 and the pressing plates 60 ... The peripheral edge of f on the opening side is opened.

[0032]

Next, as shown in FIG. 11, the bag cover mechanism 5 is driven to hold the chucks 71 ... Standing in the raised position by suction by the suction rolls 52, 52. The chuck 71 is moved to the inside of the peripheral portion, and the chucks 71 ... Hold the opening-side peripheral portion of the original film f. After the suction by the suction rolls 52, 52 is released and the pressing by the pressing plates 60 ... Is released, air is taken into the inside of the film original fabric f and the opening side of the film original fabric f held by each chuck 71. The peripheral portion is pulled in the vertical direction to coat the upper outer surface of the article B to be packaged conveyed to the coating position. As shown in FIG. 3, the film separating mechanism 3 is driven to move the film fed to the separating position while the opening side peripheral edge of the original film f held by each chuck 71 ... The front and rear surfaces of the original fabric f on the closed side are partially welded in the width direction by the heating head 35 to form a large number of unwelded parts (not shown) on the closed side of the packaging bag F, and the heat-welded film of the original fabric f is formed. The upper part is cut by the cutting cutter 30 in the width direction, and the packaging bag F is separated and formed in a size and shape so as to cover the entire article B to be packaged. After that, the heating head 35 and the cutting cutter 30 are returned to the initial position, and the respective support rollers 39, 39 are returned to the initial position.

[0033]

Next, unnecessary air is degassed from the unwelded portion (not shown) formed on the closed side of the packaging bag F, and the periphery of the opening side of the packaging bag F held by the chucks 71 ... And the packaging bag F is coated on the whole packaged object B conveyed to the coating position. After vertically lowering each chuck 71 ... to the lowering position, the gripping by each chuck 71 ... Is released and retracted to the outside of the opening side peripheral edge of the packaging bag F, and the initial state with each chuck 71 ... Opened. Raise to the position and return. After the covering work is completed, the bag-covered object B is conveyed to the packing step (not shown) by the transfer conveyor 6 while being placed on the pallet P, and the next object placed on the transfer conveyor 6 is transferred. The package B is transported to the coating position and the packaging bag F is continuously coated.

[0034]

Further, when the chucks 71 are returned to the ascended state, the film supply mechanism 2 is driven to feed out and supply the original film f wound in a roll shape to the opening position. The bag opening mechanism 4 is driven to suck and hold the opening-side front and rear surfaces of the original film f with the suction rolls 52 and 52, and peel the opening-side peripheral edge of the original film f to the suction rolls 52 and 52. Immediately after pressing the 52 and the pressing plates 60 ... to open the opening side peripheral edge of the original film f to a size capable of covering the entire package B, the bag covering mechanism 5 is driven, The chucks 71 returned to the raised position hold the opening side peripheral edge of the original film f, so that the work to cover the packaging bag F with the object B to be packaged conveyed to the covering position immediately starts. You can

[0035]

As described above, by utilizing the operation time when the packaging bag F held by the chucks 71 ... Since the suction rolls 52 and 52 open by suction by the suction rolls 52, 52, it is not necessary to stop or suspend the opening work until the chucks 92 ... 71 ... It is possible to immediately shift to the work of holding the opening side peripheral edge of the original film f and covering the packaging bag F to the object to be packed B supplied to the covering position, and the time loss of the whole work is reduced. It can be greatly reduced. At the same time, the operation time required to cover one packaging object B with the packaging bag F can be shortened, and labor can be saved and efficiency can be improved.

[0036]

FIG. 12 shows the bag opening mechanism 4 of the second embodiment in which the opening side peripheral edge of the original film f is opened by the adhesive force of the adhesives 92a, 92a attached to the pair of suction rolls 92, 92. The pressure-sensitive adhesives 92a, 92a attached to the adhesive surface sides of the suction rolls 92, 92 are pressed on the front and rear surfaces of the opening side of the original film f to press the pressure-sensitive adhesives 92a, 92a attached to the suction rolls 92, 92, respectively. The peripheral edge portion of the original film f on the opening side is separated by the adhesive force of 92a, and the peripheral edge portion of the original film f on the opening side is pressed by the suction rolls 92, 92 and the pressing plates 60. Since it is opened to a size that can be covered with respect to, the operating time when the packaging bag F held by the chucks 71 ... The periphery of the opening side of the unrolled film roll f The part can be opened by each of the suction rolls 92, 92, and the operation time required to cover one packaging object B with the packaging bag F can be shortened.

[0037]

FIG. 13 shows a bag opening mechanism 4 of a third embodiment in which the opening side peripheral portion of the original film f is held and held by a pair of holding claws 93, 93, and the opening side of the original film f is opened. The holding claws 93, 93 are alternately held on the front and rear surfaces and held by the holding claws 93, 93, and the edge of the opening side of the original film f is peeled off by the surface resistance generated at the holding portions of the holding claws 93, 93. , 93, the opening-side peripheral edge of the original film f held between the chucks and 93 is opened to a size capable of covering the object to be packaged B. Therefore, as in the first embodiment, the packing bag F held by the chucks 71 ... Using the operating time when the object B to be packaged is covered, the opening side peripheral edge of the film raw material f to be fed next can be opened by the holding claws 93, 93. Required when covering packaging bag F on B The operating time can be shortened.

[0038]

In the correspondence between the configuration of the present invention and the above-described embodiment, the bag body of the present invention corresponds to the packaging bag F of the embodiment, and the bag opening body is similar to the suction rolls 52 and 92. The bag opening means includes a mounting frame 42, a rail 43, a movable frame 44, sprockets 45, 46, 49, 50, a moving chain 47, a drive motor 48, and a drive motor 48. Corresponding to the chain 51, the bag covering corresponds to the chuck 71, and the bag covering means includes a mounting frame 61, a rail 62, a movable frame 63, sprockets 64, 65, 68, 69, and lifting and lowering. It corresponds to the chain 66, the drive motor 67, and the drive chain 70, the adhesive body corresponds to the adhesive agent 92a, the opening chuck corresponds to the holding claw 93, the coating chuck corresponds to the chuck 71, The negative pressure generating means Also corresponding to the intake means such as suction blower or a vacuum pump (not shown), this invention is not limited only to the above-mentioned arrangement of the embodiment.

[0039]

In the above-mentioned embodiment, the packaging bag F formed by separating the film raw material f wound into a roll into a predetermined size is coated on the article to be packaged B. For example, a package formed in a predetermined size is used. The bag F may be vertically fed out from the upper part of the apparatus to cover the article B to be packaged, or the original film f or the packaging bag F having a large number of ventilation holes (not shown) may be used. The configuration is not limited to the above.

[Brief description of drawings]

FIG. 1 is a side view showing an opening operation and a covering operation by a bag covering device.

FIG. 2 is a side view showing a covering operation by the bag covering mechanism.

FIG. 3 is a side view showing a separating operation by a film separating mechanism.

FIG. 4 is a plan view showing a mounting state of a bag opening mechanism and a bag covering mechanism.

FIG. 5 is a rear view showing how the suction roll is attached.

FIG. 6 is a side view showing an attached state of a suction roll.

FIG. 7 is a side view showing the rotation operation of the suction roll.

FIG. 8 is a side view showing the forward / backward movement of the chuck.

FIG. 9 is a front view showing a gripping operation of the chuck.

FIG. 10 is a side view showing the opening operation by the bag opening mechanism.

FIG. 11 is a side view showing a covering operation by the bag covering mechanism.

FIG. 12 is a side view showing the bag opening mechanism of the second embodiment.

FIG. 13 is a side view showing the bag opening mechanism of the third embodiment.

FIG. 14 is a side view showing a covering operation by a conventional device.

[Explanation of symbols]

 f ... Original film F ... Packaging bag B ... Packaged object 1 ... Bag coating device 2 ... Film supply mechanism 3 ... Film separation mechanism 4 ... Bag opening mechanism 5 ... Bag covering mechanism 6 ... Transfer conveyor 7 ... Film loading unit 30 ... Cutting cutter 35 ... Heating head 52 ... Adsorption roll 52a ... Intake hole 60 ... Pressing plate 71 ... Chuck 92 ... Adsorption roll 92a ... Adhesive 93 ... Holding claw

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] December 8, 1995

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction content]

[Document name] Statement

[Title of device] Bag coating device

[Scope of utility model registration request]

[Brief description of drawings]

FIG. 1 is a side view showing an opening operation and a covering operation by a bag covering device.

FIG. 2 is a side view showing a covering operation by the bag covering mechanism.

FIG. 3 is a side view showing a separating operation by a film separating mechanism.

FIG. 4 is a plan view showing a mounting state of a bag opening mechanism and a bag covering mechanism.

FIG. 5 is a rear view showing how the suction roll is attached.

FIG. 6 is a side view showing an attached state of a suction roll.

FIG. 7 is a side view showing the rotation operation of the suction roll.

FIG. 8 is a side view showing the forward / backward movement of the chuck.

FIG. 9 is a front view showing a gripping operation of the chuck.

FIG. 10 is a side view showing the opening operation by the bag opening mechanism.

FIG. 11 is a side view showing a covering operation by the bag covering mechanism.

FIG. 12 is a side view showing the bag opening mechanism of the second embodiment.

FIG. 13 is a side view showing the bag opening mechanism of the third embodiment.

FIG. 14 is a side view showing a covering operation by a conventional device.

[Explanation of Codes] f ... Original film F ... Packaging bag B ... Package item 1 ... Bag coating device 2 ... Film supply mechanism 3 ... Film separating mechanism 4 ... Bag opening mechanism 5 ... Bag covering mechanism 6 ... Transfer conveyor 7 ... film loading unit 30 ... cutting cutter 35 ... heating head 52 ... suction roll 52a ... suction hole 60 ... pressing plate 71 ... chuck 92 ... suction roll 92a ... adhesive 93 ... sandwiching claw

Claims (6)

[Scope of utility model registration request] 1. A bag body is supplied to an opening position set on an upper part of the apparatus, an article to be packaged is supplied to a covering position set on a lower part of the apparatus, and the bag body is pulled in a vertical direction to a predetermined size. A bag covering device that opens to the outside and covers the entire packaged object, and holds the opening-side peripheral edge portion of the bag body at both side positions facing the opening-side peripheral edge portion of the bag body supplied to the opening position. An advancing position for providing a pair of bag opening bodies and holding the opening side peripheral edge portion of the bag body supplied to the opening position, and an opening side peripheral edge portion of the bag body having a size capable of covering the object to be packaged. The bag opening means for moving the bag opening bodies back and forth is provided at the retracted position for opening the bag openings, and the bag opening is provided at both side positions facing the opening side peripheral edge of the bag opened by the bag opening bodies. Each bag covering body that holds the side peripheral edge is provided, and the opening side circumference of the bag body opened by each bag opening body A raised position for holding the parts, the bag covering device provided with bags covering means for vertically moving the lowered position and above the bag covering body for covering the bag to be packaged, which is supplied to the covering position. 2. The bag coating apparatus according to claim 1, wherein each bag opening body is constituted by a pair of suction rolls that suction-hold an opening side peripheral portion of the bag body supplied to the opening position. 3. An arbitrary number of suction holes are formed on the suction surface of each suction roll at a predetermined interval in the length direction, and one end of each suction roll communicates with each suction hole. The bag laying apparatus according to claim 2, wherein a negative pressure generating means is connected to the bag. 4. The bag laying device according to claim 2, wherein an adhesive body having an adhesive force necessary for peeling off the opening side peripheral portion of the bag body is attached to the suction surface of each of the suction rolls. 5. The bag coating apparatus according to claim 1, wherein each of the bag opening bodies is constituted by a pair of opening chucks that hold an opening side peripheral portion of the bag body supplied to the opening position. 6. The bag chuck according to claim 1, 2, 3, 4 or 5, wherein each bag cover is constituted by a coating chuck that holds an opening side peripheral edge of the bag opened by each bag opening. Bag coating device.