JP4358047B2 - Packaging equipment - Google Patents

Description

  For example, the present invention can wrap a plurality of items to be packaged such as a box folded into a sheet shape before box making, a thin tray-like container, a container lid, and other thin objects having a thickness and shape that are easy to collapse. The present invention relates to a packaging device that can be used.

  Conventionally, as a method and apparatus for packaging an article to be packaged as described above, for example, a tubular film material for packaging a plastic container is sealed and cut to form a free end, and then the tubular film material There is a method of packaging a plastic container of Patent Document 1 in which a plurality of plastic containers are inserted and packaged without restraining the free ends. However, in the above-described packaging method, a plurality of plastic containers are arranged in a horizontal row and inserted into a tubular film material or covered by covering the tubular film material from the horizontal direction. When a plurality of such thin articles are packaged together, it is difficult to convey the plurality of articles while standing, and it is not possible to cope with an operation of packaging items that are easily collapsed. Moreover, since it is only packaged, there exists a problem that a tubular film material is easy to produce a wrinkle and a slack, and the superposition | stacking state of the packaged goods is unstable and tends to collapse.

JP 2003-160101 A

  In view of the above problems, the present invention covers a tube-shaped film whose lower end side is opened from above the outer surface of the article to be packaged, and then seals the lower-end opening of the tube-like film covered on the article to be packaged. Accordingly, it is an object of the present invention to provide a packaging apparatus that can package packages having thicknesses and shapes that are easy to collapse while being stacked substantially vertically.

The packaging device of the invention described in claim 1 is a first placement surface on which an article to be packaged is placed, and a lower end side of the tubular film from above the article to be packaged toward below the first placement surface. Grasping means that grips and pulls down the opening, and can be moved up and down relatively with respect to the first placement surface, and is disposed on the outer side of the pulled-down tubular film and advances and retreats along the lower surface of the packaged object. A second mounting surface that is movable; and a bottom sealing means that is provided below the second mounting surface and seals the lower end side opening of the tubular film drawn down below the first mounting surface. And providing at least a pair of pressing means for pressing the lower side surface of the packaged object from the outside of the tubular film, and sealing the upper end side of the tubular film and gripping the lower end opening of the tubular film opened at the lower end side. Gripping by means Filter paper, the material to be packaged from the outside of the tubular film which has been gripped by the gripping means is held by the pressing means, and releasing the gripping of the tubular film by the gripping means, the lower end opening of the tubular film Is configured to be sealed by the bottom sealing means.

  The said holding means can be comprised by the chuck | zipper, an attractor, etc. which hold | grip the lower end side opening part of a tubular film, for example. Further, the bottom sealing means can be composed of, for example, a heating unit that heats the lower end opening of the tubular film to a temperature at which the lower end opening is welded, an adhesive unit that bonds the lower end opening with an adhesive, and the like. Further, the first placement surface and the second placement surface can be configured by, for example, a conveyor, a placement plate, a placement table, a placement frame, or the like.

That is, when the article to be packaged is placed on the first placement surface, the lower end side opening of the synthetic resin tubular film sealed at the upper end side is grasped by the grasping means, and the first from above the article to be packaged. 1 Cover the entire outer surface of the article to be wrapped while pulling it down below the placement surface. Next, the object to be packaged is held by the pressing means from the outside of the tubular film gripped by the gripping means, and after the gripping of the tubular film by the gripping means is released, the lower end opening of the tubular film is sealed to the bottom. Seal with. Next, the second placement surface is moved backward and lowered relative to the first placement surface, and the article to be packaged covered with the tubular film (or bag) is moved from the second placement surface to the second placement surface. After transferring to one mounting surface, the packaged article on the first mounting surface is supplied to the next process, and the unpackaged article to be packaged is supplied on the first mounting surface to perform the packaging operation. Continue.

  Moreover, the packaging apparatus of the invention described in claim 2 is provided with elevating means for elevating and lowering the first placement surface on which the article to be packaged is placed, and is substantially the same height as the rising end of the first placement surface. The second mounting surface is provided in the above. According to the packaging device of the present invention, it is possible to transfer or transfer a plurality of articles to be packaged while being stacked substantially vertically. The elevating means can be composed of, for example, a hydraulic cylinder, a lift mechanism, an elevating mechanism that elevates and lowers by the rotational force of a screw shaft or chain, and the like.

Further, the packaging apparatus of the invention described in claim 3, upper Symbol be packaged is characterized in that a stack multiple articles easily fall thickness and shape substantially vertically. According to the packaging apparatus of the present invention, for example, a box folded into a sheet shape before box making, a thin tray-like container, a container lid, a plate-like article, and other articles such as thin articles with a thickness and a shape that easily fall over. It can be used for the operation of packaging articles to be packaged that are stacked or stacked substantially vertically.

According to this invention, after covering the outer surface of the article to be packaged from above with the tubular film having the lower end opened, the article to be packaged is held by the pressing means from the outside of the tube-like film grasped by the grasping means. After releasing the grip of the tubular film by the means, the lower end opening of the tubular film placed on the package is sealed and packaged. Can be packaged as it is.

  In addition, since the lower end side is sealed while holding the lower side surface of the packaged object together with the tube-shaped film with a pair of pressing means, the tube-shaped film is not wrinkled or loosened, and is closely attached to the entire outer surface of the packaged object. Therefore, the stacked state of the articles to be packaged accommodated in the tube-shaped film is stable and hardly collapses, and handling such as transportation and transportation can be easily performed.

  The object of the present invention is to wrap packages having thicknesses and shapes that are easy to collapse while being stacked substantially vertically, and stacking or stacking a plurality of items to be wrapped substantially vertically to form a tubular film. This can be achieved by covering from above and packaging.

An embodiment of the present invention will be described below in detail with reference to the drawings.
The drawings show a packaging device used for collectively packaging an article to be packaged in which a plurality of articles are stacked substantially vertically. In FIGS. 1, 2, and 3, this packaging device 1 is made of a synthetic resin. Supply device 10 that supplies the tubular film f to the sealing position a, separation position b, and opening position c set on the supply path, and a sealing device 20 that thermally seals the tubular film f supplied to the sealing position a. A separation device 30 that separates the tubular film f supplied to the separation position b into one bag F, and an opening device 40 that opens the tubular film f that is drooped to the opening position c below the separation position b. The pulling device 50 for covering the packaged material B supplied to the covering position d on the conveying device 90 to be described later, and the front and back of the packaged material B from above the bag body F. A holding device 60 that holds the left and right sides, a shaping device 70 that folds the bottom end opening of the bag body F pulled down by the pulling device 50 inward or projects outward, and adjusts it to a predetermined state; The bottom sealing device 80 for heat-sealing the lower end side opening of the bag body F covered with B, and the transport device 90 for transporting the packaging material B covered with the bag body F to the covering position d.

  The packaged item B is, for example, a box folded into a sheet before box making, a thin tray-like container, a container lid, a plate-like article, and other articles such as thin articles with a thickness and shape that are easily collapsed. It is configured by vertically stacking or stacking. Moreover, the said apparatuses 30-90 are provided so that expansion / contraction adjustment is possible according to the size of the tubular film f and the to-be-packaged object B. FIG.

  The supply device 10 described above is a device that supplies the tubular film f upward from the direction substantially perpendicular to the conveyance direction of the article B to be packaged by the conveyance apparatus 90 described later, and is folded into a flat state and rolled. A tube-like film f made of transparent, translucent or opaque synthetic resin wound around is loaded into the loading unit 11, and the tube-like film f drawn from the loading unit 11 is loaded with a tension roll 12 and guide rolls 13-16. And a length adjusting roll 17 for supplying to a sealing device 20 provided at a sealing position a on a supply path, which will be described later, and a separating device 30 provided at a separating position b. In addition, the length adjusting roll 17 is moved up and down according to the stacking height of the article to be packaged B, and the pull-out length of the tubular film f can be changed to a length suitable for packaging the whole article to be packaged B. Adjust. Further, for example, a tubular film f folded in a gusset folded state, a flat folded state, a substantially meandering state, or the like can be supplied.

  As shown in FIGS. 5 and 6, the above-described sealing device 20 includes a heating unit at the upper portion of the supply path that is disposed to face the upper and lower surfaces of the tubular film f that is adjusted in length and supplied to the sealing position a. 21 and the receiving part 22 at the lower part of the supply path are moved up and down by pressing cylinders 23 and 24 arranged at the upper and lower parts of the supply path in the direction pressed against the upper seal part of the tubular film f, Heat sealing (thermal welding) is performed in the width direction by the heating unit 21 having a length substantially corresponding to the horizontal width of the tubular film f. At the time of sealing, the sealing portion of the tubular film f is wrinkled or displaced by receiving the front and rear portions of the sealing portion with the receiving portion 22 or pressing and holding the receiving portion 22 with a pair of pressing bodies (not shown). To prevent it.

  In addition, a pair of feed rolls 26 and 27 disposed on the upper part of the separation position b facing the front and rear surfaces of the tubular film f supplied to the separation position b subsequent to the sealing position a are fed by a motor (not shown). The tube-shaped film f is supplied to the separation device 30 described later.

  The separating device 30 described above has a cutting blade 31 on the right side of the supply path and a receiving part 32 on the left side of the supply path disposed opposite to the front and rear surfaces of the tubular film f supplied to the separation position b. The front and rear cylinders 33 and 34 disposed on the right and left sides of the supply path are moved back and forth in the direction pressed against the cut portion of the film f, and the cutting blade 31 is moved, for example, by a rodless cylinder or a motor. The moving device (not shown) is horizontally moved in the width direction substantially orthogonal to the tubular film f, cuts immediately after the sealing portion of the tubular film f heat-sealed by the sealing device 20 described above, and the entire packaged item B is It isolate | separates into one bag body F which has the magnitude | size and length which are covered. At the time of separation, the cut portion of the tubular film f is received by the receiving portion 32 having a shape that avoids contact with the cutting blade 31, or a pressing portion having a shape that allows the cutting blade 31 to protrude or protrude (not shown). ) To the receiving portion 32. Moreover, although the said cutting blade 31 is comprised, for example with a cutter, a rotary blade, etc., it can also cut | disconnect at once with the cutting blade which has the length substantially corresponding to the horizontal width of the tubular film f.

  In addition, the pair of guide rolls 35 and 35 disposed to face the front and rear surfaces of the tubular film f supplied to the lower part of the separation position b are directed in the direction pressed against the front and rear surfaces of the tubular film f. It is moved back and forth by forward and backward cylinders 36, 36 arranged on the right and left sides of the supply path, and is guided according to the opening operation of the opening device 40 and the lowering operation of the lowering device 50 described later.

  The opening device 40 described above is a pair of left and right disposed opposite to the lower end side opening of the tubular film f supplied to the opening position c below the separation position b and substantially parallel to the conveying direction of the conveying device 90. The opening rolls 41 and 41 are set to a lateral angle in which the suction surface is opposed to the opening side edge of the tubular film f and a downward angle in which the opening side edge of the tubular film f is peeled open to the left and right. The rotating cylinders 42 and 42 connected to the roll ends rotate forward and backward.

  And the pressing body 43 ... pivotally attached to the rear part of the roll facing the lower peripheral surface of the opening rolls 41, 41 is pressed against the lower end side opening of the tubular film f adsorbed on the suction surface of the opening rolls 41, 41. It moves up and down by pressing cylinders 44, 44 disposed at the rear of the roll, between a closed position and an open position where the pressing is released.

  In addition, the pair of left and right opening rolls 41, 41 can be gripped by an advance position where the lower end side opening of the tubular film f suspended from the opening position c is sucked and held, and a chuck 51 of the lowering device 50 described later. Further, the tube-shaped film f is moved back and forth by advancing and retracting cylinders 45, 45 disposed at the rear part of the roll to a retracted position opened in a substantially square shape when the lower end side of the tubular film f is viewed from above.

  The above-mentioned opening roll 41 is connected to negative pressure generating means (not shown) such as an intake blower or a vacuum pump, for example, and is formed in a substantially round intake hole (not shown) formed at a predetermined interval with respect to the entire suction surface of the roll. (Omitted) is adsorbed and held at the negative pressure generated by the negative pressure generating means when the tube-shaped film f (including the bag F) is in close contact with both sides of the opening side, and the opening-side peripheral portion of the tubular film f is described later. When the chuck 51 is held by the lowering device 50, the negative pressure of the negative pressure generating means is shut off or stopped to release the suction holding.

  As shown in FIGS. 6 and 7, the lowering device 50 described above is a lower end side opening portion of the tubular film f opened by the opening device 40 described above, and is not adsorbed by the opening rolls 41 and 41. A pair of left and right lifting frames 54 disposed on both sides of a transfer device 90, which will be described later, with four sets of chucks 51... Holding the both ends of each side substantially opposed to the lower end opening of the tubular film f. The support frame is in a closed state in which the lower end side opening of the tubular film f attached to both ends of the 54 via support frames 57 and 57 and opened by the opening device 40 is held, and in an open state in which the holding is released. Opening and closing operations are performed by holding cylinders 52 and 52 attached to both inner ends of 57 and 57.

  Further, the advance position for holding the chuck 51... At the lower end side of the tubular film f opened by the opening device 40, and the retracted position at which contact with the package B to be described later is avoided and vertical movement is allowed. At the same time, they are moved back and forth by the forward and backward cylinders 53 and 53 attached to the base end portions of the support frames 57 and 57.

  The elevating frames 54 and 54 described above are attached to guide rails 55 and 55 erected on both sides of the conveying device 90 so as to be vertically movable, and the chain 56 connected to the elevating frame 54 is forward and backward by a motor (not shown). The upper limit position where the lower end side opening of the tubular film f rotated and opened by the opening device 40 is gripped by the chucks 51, and the lower end side opening of the tubular film f gripped by the chucks 51 are described later. The entire lifting frame 54 is moved up and down to a lower limit position that is lowered below the plate-like second placement surfaces 81 and 81.

  The support frames 57 and 57 are attached to a guide rail 58 installed on the front surface of the elevating frame 54 so as to be horizontally movable, and a chain 59 connected to the support frames 57 and 57 is rotated forward and backward by a motor (not shown). Thus, the proximity position where the lower end side opening of the tubular film f opened by the opening device 40 is gripped by the chuck 51, and the contact of the chuck 51 with the package B to be described later are avoided and the vertical movement is allowed. The support frames 57 and 57 are moved back and forth to the separated position.

  As shown in FIG. 10, the holding device 60 includes a pair of left and right holding plates 61 and 61 that press and hold the left and right side surfaces of the package B from the top of the bag body F covered by the pulling device 50. Are arranged inside the front and rear chucks 15 and 15 attached to the lifting frame 54 so as to face the left and right side surfaces of the article B to be packaged placed on the second placement surfaces 81 and 81 described later. Then, the advancing and retreating cylinders 62 and 62 disposed on both sides of the transporting device 90 are moved back and forth between a forward position pressed against the left and right side surfaces of the package B and a retracted position where the pulling operation of the pulling device 50 is allowed. To do.

  In addition, a pair of front and rear holding plates 63 and 63 that press and hold both front and rear surfaces of the packaged item B are opposed to the front and rear surfaces of the packaged item B that is placed on the second placement surfaces 81 and 81 described later. A swiveling position that is attached to the free ends of the front and rear arms 64 and 64 that are pivotally supported on one side of the transport device 90 and is pressed against both front and rear surfaces of the package B that is transported to the covering position d, and The revolving position where the transport operation of the package B is allowed is horizontally rotated by the rotation cylinders 65 and 65 disposed on both sides of the transport device 90. Moreover, the holding | maintenance space | interval of the holding plates 63 and 63 is provided so that expansion / contraction adjustment is possible according to the size of the packaged item B.

  In addition, a pair of left and right pressing bodies 66 and 66 that press the lower side surfaces of the tubular film f placed on the package B from the outside are mounted on the second mounting surfaces 81 and 81. A forward position for pressing and gripping both the lower side surfaces of the tubular film f and the packaged object B, disposed on the upper both sides of the conveying device 90 so as to face both lower side surfaces of B, and packaging by the conveying device 90 It moves back and forth by advancing and retracting cylinders 67 and 67 disposed on both sides of the conveying device 90 to a retracted position where the conveying operation of the object B is allowed. In addition, a non-slip member having a large contact resistance such as synthetic rubber or soft resin is attached to the pressing surface of the pressing body 66. Further, instead of the anti-slip member, for example, it can be formed in an uneven shape, a wavefront shape, a tooth surface shape, or the like.

  As shown in FIGS. 2 and 3, the above-described shaping device 70 includes a pair of front and rear rod-shaped shaping bodies 71 that tension the lower end side opening of the bag body F covered on the above-described package B in the front-rear direction. 71 is attached to the free end side of the links 72, 72 that are pivotally supported on the front and back of the lower part of the plate-like first mounting surface 95, which will be described later, facing the lower end side opening of the bag body F, and is covered by the lowering device 50. A closing angle inserted into a lower end side opening of the bag body F placed on the package B, an opening angle at which the lower end side opening portion of the bag body F is substantially closed, and a first placement surface It is rotated back and forth by rotating cylinders 73 and 73 disposed at the front and rear of the lower part of 95. Further, the hollow rod-shaped shaping bodies 71, 71 may be connected to a deaeration device (not shown) such as an intake blower or a vacuum pump to forcibly deaerate and evacuate the air inside the bag body F. it can. On the contrary, it is also possible to fold the front-rear direction of the lower end side opening of the bag body F inward by the shaping device 70. Further, the shaping device 70 may not be driven and the lower end side opening of the bag body F may be sealed while hanging down.

  As shown in FIGS. 8, 9, and 10, the above-described bottom seal device 80 has a pair of left and right second placement surfaces on which the article B to be packaged lifted by the first placement surface 95 described later is placed. 81 and 81 are provided at substantially the same height as a rising end (upward position) of a first mounting surface 95 to be described later, and are tubularly lowered below the first mounting surface 95 by the pulling device 50 described above. The film f is attached to the upper ends of left and right movable frames 82 and 82 disposed on both sides of the lower part of the conveying device 90, which will be described later, so as to face both lower side surfaces of the film f. A chain 84 attached to the installed guide rail 83 and coupled to the movable frames 82 and 82 is rotated forward and backward by a motor (not shown) disposed on the lower side, so that the left and right movable frames 82 and 82 are packaged. The second mounting surfaces 81 and 8 with the object B stacked substantially vertically. The first mounting surface 95 is moved back and forth, and the first mounting surface 95 is moved back and forth, and the second mounting surfaces 81 and 81 are mounted on the first mounting surface 95. It moves back and forth horizontally along the left and right lower surfaces of the package B. Moreover, the width | variety of the advance end of the 2nd mounting surfaces 81 and 81 is longer than the tubular film f expanded by the above-mentioned rod-shaped shaping bodies 71 and 71. FIG.

  In addition, the opening on the lower end side of the tubular film f lowered by the above-described lowering device 50 below the second placement surfaces 81 and 81 advances the second placement surfaces 81 and 81 to be packaged. The right side heating part 85 and the left side receiving part 86 that are heat-sealed when being squeezed along the lower surface from the left and right sides of B are directly below the second placement surfaces 81 and 81 from the upper surfaces of the feed belts 91 and 91 of the conveying device 90. The lower seal of the bag body F attached to the upper side opposite to the upper end side of the left and right movable frames 82 and 82 and squeezed along the left and right lower surfaces of the package B by the second placement surfaces 81 and 81. Advancing / retracting cylinders 87, 87 horizontally fixed on the upper end side of the movable frames 82, 82 at a forward position for pressing the lower side surfaces corresponding to the portion and a backward position spaced apart from the lower side surfaces by a predetermined distance. Moved back and forth, with the shaping device 70 The width and the width direction substantially corresponding to the length heating portion 85 of the tension by tubular film f is heat-sealed (thermal welding). At the height position opposite to the lower seal portion of the bag body F, the lift cylinders 88 and 88 are vertically fixed to the upper end sides of the left and right movable frames 82 and 82 to move up and down relatively with respect to the first placement surface 95. To do.

  In addition, at the time of heat sealing by the heating units 21 and 85, for example, air discharged from an injection nozzle (not shown) connected to a compressor, a blower blower, or the like may be blown to the sealing portion of the tubular film f to be cooled. . Moreover, you may spray water, alcohol, etc., for example instead of air.

  As shown in FIGS. 2, 3, and 4, the above-described transport device 90 includes feed belts 91 and 91 that transport a package B in which a plurality of articles are stacked substantially vertically. Is stretched in parallel to the feed direction with a left-right interval supported approximately horizontally, and rotated in the feed direction by a motor (not shown) disposed at the lower end side and detected by a detection sensor (not shown) On the basis of the above, the article B to be packaged placed on the feed belts 91 and 91 is conveyed and stopped at the covering position d set on the conveying path. In addition, the entire lifting device 90 is disposed at the lower and front and lower cylinders 92 and 92 at a rising position above the mounting surface of the first mounting surface 95 and a lowering position below the mounting surface. To move up and down relatively. Note that the belt conveyor type transfer device 90 may be configured by, for example, a roller conveyor, a chain conveyor, a thrust conveyor, or the like.

  In addition, the lifting device 94 disposed at the lower portion of the covering position d is configured to feed the first placing surface 95 that moves up and down by placing the article B to be packaged by stacking a plurality of articles substantially vertically. Opposite the bottom surface of the article to be packaged B placed on the lower center between the feed belts 91, 91, the bottom surface of the article B to be packaged stacked at the bottom is the second placement surface 81, 81. Is moved up and down in a substantially vertical direction by a lifting cylinder 96 disposed at the lower part of the covering position d, to a rising position where it is lifted to substantially the same height as that of the feeding belt 91, 91 To do. Further, the first placement surface 95 may be moved up and down by, for example, a lift mechanism, a lifting mechanism that moves up and down by the rotational force of a screw shaft or chain, and the like. Further, the first placement surface 95 does not support the entire bottom surface of the article to be packaged B, but is formed so as to support at least the center of the bottom surface of the object to be packaged B.

  In addition, a carry-in conveyor 97 that conveys the packaged product B while being stacked substantially vertically is connected to the starting end side of the transporting device 90, and the side surface of the packaged product B is aligned substantially vertically, or the packaged product B A pair of guide plates 97a for bringing the whole width up is provided on one side of the carry-in conveyor 97 so as to be movable and adjustable in a direction perpendicular to the transport direction, and the next package B is stopped immediately before the transport device 90. The shutters 97b and 97b are provided on both end portions of the carry-in conveyor 97 so as to be horizontally openable and closable. Further, an unloading conveyor 98 that conveys the bag-wrapped article B to the next process (for example, a shipping process, a storage process, etc.) is connected to the terminal side of the conveying device 90 and disposed.

  The illustrated embodiment is configured as described above, and hereinafter, a packaging operation in which the bag body F is placed on the outer surface of the article to be packaged B by the packaging apparatus 1 will be described.

  First, as shown in FIGS. 2, 3, and 4, the pair of shutters 97 b and 97 b are opened, and an article B to be packaged in which a plurality of articles are stacked substantially vertically is sent from the carry-in conveyor 97 to the transfer device 90. It is transferred to the belts 91 and 91 and conveyed to the covering position d on the conveyance path. The upper seal of the first bag body F is performed when the film is set.

  Next, as shown in FIG. 5, the tubular film f supplied from the supply device 10 is passed through the sealing device 20 at the sealing position a and the separation device 30 at the separation position b, and the opening device 40 at the opening position c. The both sides of the opening side of the tubular film f are adsorbed and separated by a pair of left and right opening rolls 41, 41, and are gripped by the opening rolls 41, 41 and the pressing bodies 43, so as to open to the left and right. At this time, the tubular film f is supplied to the opening in a necessary amount.

  Next, the opening side peripheral portion of the tubular film f opened by the opening device 40 is gripped by four sets of chucks 51. Thereafter, the pair of opening rolls 41 and 41 and the pressing bodies 43 are released and returned to the initial positions. On the other hand, by the time the pulling device 50 starts pulling down, the entire package B that has been transported to the covering position d on the transporting device 90 is lifted substantially vertically by the first placement surface 95 of the lifting device 94 and is moved to the lowest level. The bottom surface of the packaged object B that has been stacked is lifted up to approximately the same height as the second placement surfaces 81, 81.

  Next, as shown in FIG. 6, the lower end side opening of the tubular film f gripped by the chucks 51... Is pulled downward while being opened to a size that covers the outside or the outer surface of the package B. When the upper seal portion of the tubular film f slightly passes through the separation device 30, the pulling is temporarily stopped, and the upper end side of the tubular film f is cut in the width direction by the cutting blade 31 of the separation device 30. Separate into two bags F. And the upper seal part of the tubular film f drawn out next is heat-sealed by the heating part 21 of the sealing device 20. Thereafter, the cutting blade 31 and the heating unit 21 are moved back to the initial positions.

  Next, as shown in FIG. 7, the lowering is resumed, and the opening on the lower end side of the bag body F gripped by the four sets of chucks 51 is opened to a size that covers the outside or the outer surface of the package B. As it is, it is lowered below the first placement surface 95 and lowered until the entire outer surface of the article to be packaged B is covered. At this time, the article to be packaged B and the bag body F are covered in a relaxed and relaxed state.

  Next, as shown in FIG. 3, the lower end side opening of the bag body F covered with the article B to be packaged by the lowering device 50 is moved back and forth by a pair of front and rear rod-shaped shaped bodies 71 and 71 constituting the shaping device 70. After tensioning and holding in a state where the inner surface of the lower end side of the bag body F is close or in close contact, the lower end side of the bag body F is moved by the chucks 51 of the pull-down device 50 as shown in FIG. While gripping the bag body F, the pair of left and right second placement surfaces 81, 81 constituting the bottom seal device 80 are placed on both sides of the first placement surface 95 to a position where the package B can be placed. The product is slid in the horizontal direction along the left and right bottom surfaces of the article to be packaged B that protrudes from the portion, and is temporarily stopped. Then, when the first placement surface 95 is lowered to the descending end, the article B to be packaged is transferred from the first placement surface 95 to the second placement surfaces 81 and 81.

  Next, as shown also in FIG. 9, the forward movement of the pair of left and right second placement surfaces 81, 81 is resumed, and the lower end opening of the bag body F pulled down below the first placement surface 95. While narrowing down along the bottom surface of the article to be packaged B with the second placement surfaces 81, 81, the inner side of the lower end side of the bag body F is brought into close contact with no wrinkles and gaps, and the bag body F is stretched to be packaged. A state where the entire outer surface of the object B is closely adhered is made. Thereafter, the left and right side surfaces of the bag body F covered with the package B while being held by the chucks 51 are pressed and held from the outside by a pair of left and right pressing bodies 66, 66.

  Next, as shown in FIGS. 3 and 10, the pair of left and right holding plates 61 and 61 and the pair of front and rear holding plates 63 and 63 constituting the holding device 60 are mounted on the first mounting surface 95. After pressing and holding both front and rear surfaces of the article B to be packaged, the gripping of the chucks 51 of the lowering device 50 is released. The opening on the lower end side of the bag body F narrowed down by the second placement surfaces 81 and 81 is heat-sealed by the heating unit 85. Thereafter, the rod-shaped shaping bodies 71 are returned to the initial position.

  Next, after the sealing is completed, as shown in FIG. 11, the holding plates 61 and 61 and the holding plates 63 and 63 are moved back to the initial positions where the holding of the package B is released, and the chucks 51 are moved. Move back to the raised position. Subsequently, the pressing bodies 66 and 66 and the second mounting surface 81 and 81 are moved backward to a position where they can be transferred, and the first mounting surface 95 of the lifting device 94 is raised to the rising end, and then the second mounting surface is placed. The surfaces 81, 81 are moved backward again, and the second placement surfaces 81, 81 are moved to the second placement surfaces 81, 81 by the relative lifting operation of the second placement surfaces 81, 81 and the first placement surface 95. Then, the first mounting surface 95 is lowered and transferred to the feed belts 91 and 91 of the conveying device 90, and transferred from the conveying device 90 to the carry-out conveyor 98. Supply to the next process. Thereafter, the bag covering operation is continued in the same manner as described above.

  As described above, the upper end side of the tubular film f or the bag body F is heat-sealed by the sealing device 20, and the tubular film f or the bag body F having the lower end side opened is pulled upward on the outer surface of the packaged item B by the pulling device 50. Since the lower end side opening of the tube-shaped film f or bag body F covered on the article to be packaged B is heat-sealed and packaged by the bottom seal device 80, the article to be packaged has a thickness and shape that is easy to collapse. B can be packaged together while being stacked substantially vertically. Moreover, since the lower end side is sealed while pressing and holding the lower side surfaces of the article to be packaged B together with the pair of left and right pressing bodies 66, 66 together with the tubular film f or the bag body F, the tubular film f or the bag body F is sealed. No wrinkles or sags occur, and it closely adheres to the entire outer surface of the packaged item B, so that the stacked state of the packaged item B accommodated in the bag body F is stable and hardly collapses. Easy to handle.

In the correspondence between the configuration of the present invention and the above-described embodiment,
The gripping means of the present invention corresponds to the pulling device 50 and the chuck 51 of the embodiment,
Similarly,
The bottom sealing means corresponds to the bottom sealing device 80 and the heating unit 85,
The elevating means corresponds to the elevating device 94 and the elevating cylinder 96,
The pressing means corresponds to the pair of pressing bodies 66, 66,
The present invention is not limited to the configuration of the above-described embodiment.

  The packaging device 1 of the above embodiment separates and covers the tube-shaped film f into a bag body F of a desired size. For example, a bag body F formed in advance so as to cover the entire package B is covered. It can be used for work to cover one bag at a time. It is also conceivable to adopt a configuration in which the upper surface of the transfer device 90 is moved up and down as the first mounting surface and a configuration in which the second mounting surface is moved up and down.

The side view which shows the packaging operation | movement of the to-be-packaged object by a packaging apparatus. The front view which shows the covering operation | movement of a pulling-down apparatus and the tension | tensile_strength operation | movement of a shaping apparatus. The top view which shows the covering operation | movement of the bag body by a pulling-down apparatus. The front view which shows the conveyance operation and stop state of a packaging apparatus. The side view which shows opening operation of a tubular film. The side view which shows the middle of pulling down of a tubular film. The side view which shows completion of pulling down of a tubular film. The side view which shows the transfer operation | movement of the to-be-packaged item to the 1st and 2nd mounting surface. The side view which shows narrowing-down operation | movement of the lower end side opening part of a bag body. The side view which shows the sealing operation | movement of the lower end side opening part of a bag body. The side view which shows the transfer operation | movement of the packaging completion state of a to-be-packaged item.

B: Packaged object f ... Tube-shaped film F ... Bag body 1 ... Packaging device 10 ... Supply device 20 ... Sealing device 30 ... Separation device 40 ... Opening device 50 ... Pulling device 51 ... Chuck 60 ... Holding device 61, 63 ... Holding Plate 66 ... Pressing body 70 ... Shaping device 71 ... Bar shaped body 80 ... Bottom seal device 81 ... Second mounting surface 85 ... Heating unit 90 ... Conveying device 91 ... Feed belt 94 ... Elevating device 95 ... First mounting surface

Claims (3)

A first placement surface on which an item to be packaged is placed;
Gripping means for gripping and pulling down the lower end side opening of the tubular film from above the article to be packaged toward the bottom of the first placement surface;
A second placement surface that can be moved up and down relatively with respect to the first placement surface, and is disposed on the outer side of the pulled-down tubular film and is capable of moving back and forth along the lower surface of the packaging object;
Bottom seal means for sealing a lower end side opening of the tubular film provided below the second placement surface and pulled down below the first placement surface ;
Providing at least a pair of pressing means for pressing the lower side surface of the package from the outside of the tubular film;
The upper end side of the tubular film is sealed, and the lower end side opening of the tubular film opened at the lower end side is grasped by the grasping means and pulled down ,
Hold the object to be packaged from the outside of the tubular film gripped by the gripping means by the pressing means, release the grip of the tubular film by the gripping means,
A packaging device characterized in that the lower end opening of the tubular film is sealed by the bottom sealing means. 2. A lifting means for raising and lowering a first placement surface on which the packaged article is placed is provided, and the second placement surface is provided at substantially the same height as the rising end of the first placement surface. Packaging equipment. The packaging apparatus according to claim 1 or 2, wherein the packaged items are a plurality of articles each having a thickness and shape that are easily collapsed and stacked substantially vertically .

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