JP2676308B2 - Method and apparatus for packaging soft packaged items such as sandwiches - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging method and apparatus for packaging a triangle-shaped soft packaged object such as a sandwich with a continuous strip film wound on a roll.

[0002]

2. Description of the Related Art Conventionally, triangular sandwiches in which contents such as meat and vegetables are sandwiched between stacked breads are sold in a state of being packaged with a transparent film. An example of a packaging machine for packaging a triangular soft packaged object such as a sandwich is described in, for example,
As disclosed in Japanese Laid-Open Patent Application No. 10202 and Japanese Utility Model Laid-Open No. 60-171805, a bag-made bag having an opening through which a sandwich can be inserted is used, and a sandwich machine which is manually packed in advance is used as a packaging machine. It has been proposed that the opening of the bag is automatically folded and sealed with tape or the like by supplying.

[0003]

In the above-mentioned conventional packaging machine, since all the bags are packaged by using the already manufactured bags, the bags having the sizes according to the specifications of sandwiches having different outer dimensions and thicknesses are used. Therefore, there is a drawback that the inventory management becomes complicated and the packaging cost increases. Further, in order to insert the sandwich through the opening of the bag, a bag manufactured to have an internal dimension with a margin with respect to the outer dimension of the sandwich is used. Therefore, when the sandwich is packaged in the bag, there is a drawback that a gap is generated between the sandwich and the bag (dumbness occurs), and the commercial value is lowered. Moreover, it is pointed out that the cost of the packaging material is increased and the cost is increased.

Further, insertion of a sandwich into a bag (bag filling)
Since the work relies on manual labor, the work is troublesome and there is a problem that reduction of labor cost cannot be expected. Moreover, when the sandwich is inserted into the bag, the contents of the sandwich are rubbed against the inner surface of the bag to stain the bag, resulting in poor appearance and reduced commercial value.

[0005]

SUMMARY OF THE INVENTION The present invention has been proposed in view of the above-mentioned various problems inherent in the packaging of a flexible packaged object such as a sandwich and the like, and has been proposed to suitably solve the problems. It is an object of the present invention to provide a packaging method and device which can always perform tight packaging with good appearance even if the outer dimension of the product changes, and can save labor and reduce manufacturing cost.

[0006]

[Means for solving the problems] To overcome the above-mentioned problems,
In order to achieve the intended purpose, the packaging method of a flexible packaged object such as a sandwich according to the present invention is a method of packaging a soft packaged object having a triangular shape such as a sandwich, and the inner angle of the packaged object. The strip-shaped film, which has a required width wider than the length of the bottom side opposite to the top, whose angle is set to about 90 °, is pulled out from the supply source by the film supply mechanism and spread in the vertical direction intersecting the supply direction of the packaged object. Then
The posture of the article to be packaged placed on the supply conveyor and conveyed intermittently, with the bottom surface on the bottom side facing the strip film.
In synchronization with the intermittent operation of the supply conveyor, the film is fed by the pushing means that pushes it toward the stretched portion of the strip-shaped film.
Aiming the object to be packaged toward the stretched part of the band-shaped film by the feeding means
When pushing, the upper and lower ends of the front end of the package in the feeding direction
The strip-shaped film is pulled out from the supply source by being supported by the pull-out means and wrapped around the article to be wrapped, and the article wrapped around the strip-shaped film is elastically gripped together with the film from its thickness direction, and the article to be wrapped is also wrapped. Above the front edge of
On the lower surface side and the upper end in the height direction near the rear end in the supply direction
To actuate the fusing sealer at the rear part in the feeding direction of the packaged object while being supported by the means for supporting it.
The film web is sealed off by the film strip
Received the packaged goods after the body winding seal on the transfer conveyor
After that , lower the product while holding the object to be packaged by the transfer conveyor.
When transferring to the flow side, the bending means is inclined from each of the tops.
By operating toward the surface, the region of the tubular film wound in the body and facing each inclined surface of the package is bent from the top along the inclined surface, and folding hand each of the lateral extending portion of the film extending outwardly from each side of the thickness direction upstream and downstream of the inclined surfaces
Polymerization by bending along an inclined surface by steps, a film extending portion extending outward from a side in contact with at least one inclined surface of the bottom surface of the article to be packaged, of the bending sticking means.
Overlaps with each lateral extension that has already been bent by operation
By bending so along the inclined surface so as to characterized in that so as to adhere.

[0007] The base of each film extending portion extending outwardly from said contact with the inclined surfaces of the bottom surface of the packaged articles sides
A sealing seal is applied to the part by operating the seal cutting means.
At the same time, the extension part that extends outward from the seal part is
It may be cut by a roll cutting means .

[0008] Further, the said one of the film extending portion extending outwardly from the side in contact with the inclined surfaces of the bottom surface of the packaged articles, already bent by the operation of the bent attaching means
Bending and adhering along the inclined surface so as to overlap with each lateral extension, and seal cutting means on the base of the other film extension.
It is also possible to apply a hermetic seal by activating the above, and cut the extending portion extending outward from the seal portion by the seal cutting means .

Further, in order to preferably carry out the above method, a packaging device for a soft packaged object such as a sandwich according to another invention of the present application is a device for packaging a soft packaged object having a triangular shape such as a sandwich. Then, a strip-shaped film having a required width wider than the length of the bottom side facing the top of the packaged object whose inner angle is set to about 90 ° is pulled out from the supply source and intersects with the stretched part of the strip-shaped film. While supplying the object to be packaged in a posture in which the surface on the bottom side is opposed to the strip-shaped film from the direction, after winding the strip-shaped film from the supply source and winding it around the object to be packaged, at the rear portion in the supply direction of the object to be packaged. A body wrapping means for sealing and cutting a band-shaped film, and is arranged on the downstream side of the body wrapping means,
A transfer conveyor that conveys the body-wrapped object in a holding state at a predetermined interval with its bottom side surface facing the conveyance surface, and in proximity to the conveyance surface while the transfer conveyor is in the course of conveying articles. A first bending means that is arranged so as to be movable away from each other, and that bends a portion of the tubular film wound around the package to face each inclined surface of the packaged object, along with each inclined surface from the top. Each side disposed on the downstream side of the first folding means and extending outward from the upstream side in the thickness direction of each inclined surface of the packaged object in the film folded by the first folding means. Second bending means for bending the laterally extending portion along the inclined surface, and a downstream side of the second bending means, which extends outward from a downstream side of the inclined surface of the package. Bend each lateral extension of the projected film along the inclined surface. 3 and folding means, wherein disposed on the downstream side of the third folding means, at least one of the Fi <br/> Lum extending portion extending in the conveying surface or et outward of the transfer conveyor in the material to be packaged Is bent along the inclined surface, and the extending portion is attached to the film located on the inclined surface by a bending and attaching means.

Further , on the downstream side of the third folding means,
The surface of the object to be packaged that faces the transfer surface of the transfer conveyor.
The film extension that extends outward from the
A film that is bent and the extension is located on an inclined surface
You may arrange | position the bending sticking means to stick to. Further , at the downstream side of the third folding means, the base of the film extending portion extending outward from the surface of the object to be packaged facing the conveying surface of the transfer conveyor is sealed and the base portion of the film extending outward from the sealing portion. You may arrange | position the seal cutting means which cut | disconnects the said extension part in the appropriate position which extends.

[0011] Furthermore, the third to the disposed downstream of the folding means, said one of the film extending portion extending outwardly from the conveying surface which faces the transfer conveyor in the material to be packaged inclined Bending and adhering means for adhering the extending portion to the film located on the inclined surface while bending along the surface, and extending outward from the surface of the object to be packaged facing the conveying surface of the transfer conveyor. The base portion of the other film extending portion may be sealed, and a seal cutting means may be provided to cut off the extending portion at an appropriate position extending outward from the sealing portion.

[0012]

The triangle-shaped article to be packaged is pulled out from the supply source and stretched in a direction intersecting the direction in which the article to be packaged is spread, and the surface on the bottom side facing the top is formed into a film. By supplying in a facing attitude, the strip-shaped film is pulled out and wound around the packaged object. Then, by sealingly cutting the strip-shaped film at the rear portion in the supply direction of the packaged object, the packaged object is wrapped around the tubular film. By bending a portion of the tubular film facing each inclined surface of the packaged object along the inclined surface, a lateral extension portion extending outward from both sides in the thickness direction of the inclined surface is formed. . After bending each side extending part along the inclined surface, the film extending part extending from the bottom surface of the packaged object is bent along the inclined surface, and is attached to the film on the inclined surface. As a result, the article to be packaged is tightly wrapped by the film.

Further, after bending each side extending portion of the film extending outward from the inclined surface of the packaged object along the inclined surface, the film extending portion extending from the bottom surface is cut by sealing. As a result, a sealed package is formed. Alternatively, by sticking one film extending portion extending from the bottom surface to the inclined surface and sealing cutting the other film extending portion, a package similar to the conventional packaging form can be obtained.

[0014]

EXAMPLES Next, a method for wrapping a soft packaged article such as a sandwich according to the present invention will be described below with reference to a preferred example in relation to an apparatus capable of suitably implementing the method. In the embodiment, an isosceles triangular sandwich having an inner angle of about 90 ° is packaged. For convenience of description, a surface located on the long side of the sandwich is referred to as a “bottom surface” and a short surface. The surface located on the side is referred to as an “inclined surface”, the bottom surface side with respect to the top of the sandwich is referred to as “downward”, and the sandwich stacking direction (thickness direction) is referred to as “lateral”.

[0015]

[Each mechanism constituting the body wrapping means]

[Regarding Supply Conveyor] FIG. 1 is a side view showing a schematic configuration of a packaging apparatus according to an embodiment, in which a sandwich film 11 to be described later is provided in a machine frame 12 on the upstream side in the transport direction of the sandwich 11 in the apparatus 10. A supply conveyor 14 that supplies the toner to the spreading portion of F is arranged. That is, as shown in FIG. 2, the machine frame 12 is provided with a pair of frames 15 and 15 which are separated from each other in the direction intersecting the transport direction,
A driven pulley 16 is rotatably supported between the upstream ends of the frames 15, 15. Also, the frames 15,15
A guide plate 17 is installed between the downstream ends of the guide plates 17, and an endless conveyor belt 18 wound around the downstream end of the guide plate 17 and the driven pulley 16 is rotated to an appropriate position of the frames 15 and 15. It is wound around a drive pulley 19 which is freely pivoted (see FIG. 3). The driving pulley 19 is intermittently driven by driving means (not shown), and is configured to intermittently convey the sandwich 11 placed on the conveying belt 18. In addition, between the driven pulley 16 and the guide plate 17,
A bed 20 that supports the conveyor belt 18 from below is installed between the frames 15 and 15. Further, reference numeral 21 denotes a tension roller that applies tension to the transport belt 18.

A positioning base 22 is disposed between the frames 15 and 15 downstream of the position where the driven pulley 16 is disposed so as to face above the conveyor belt 18 without interfering with the positioning base 22. 2, a triangular recess 22a is formed as shown in FIG. And the recess 22
a, the sandwich 11 is placed so that the top side (top side) faces the upstream side, so that the sandwich 11 is located at the center of conveyance of the conveyance belt 18. .

[0017]

[About the Pushing Plate] As shown in FIG. 2, guide rods 23 along the transport direction are arranged at positions sandwiching the supply conveyor 14 of the machine frame 12, and each guide rod 23 has an outer crossing the transport direction. In the direction (in the direction away from the supply conveyor 14), two cylinders 24 are provided slidably oriented to the two piston rods 24a.
Each cylinder 24 is connected to a rod 25 linked to a cam (neither is shown) that is rotationally driven by a driving means such as a motor, through which the cylinder 24 reciprocates along the guide rod 23. It is configured to be.
The cylinder 24 may be reciprocated along the guide rod 23 by another cylinder.

Piston rod 24 of each cylinder 24
A bracket 26 is disposed on each of the brackets a and 24a, and a pushing plate 27 is disposed at a position facing the upper side of the transport belt 18 of the bracket 26 so as to be adjustable in position. As shown in FIG. 5, the pushing plate 27 includes a pushing portion 27a along the inclined surface of the sandwich 11, and a drawer portion 27b formed at a downstream end of the pushing portion 27a in a direction perpendicular to the carrying direction. And a support portion 27c bent at the upstream end of the pushing portion 27a in parallel with the drawer portion 27b. The support portion 27c is provided on the bracket 26 via the support portion 27c. Then, the sandwich 11 transported by the transport belt 18 is supplied to the supply conveyor 14.
Light emitting element 120a and light receiving element 12
0b, the cylinders 24, 24 are urged in the direction of retracting their piston rods 24a, 24a to push the opposing pushing plates 27, 27 at the timing detected by the detecting means 120 consisting of 0b. Part 27a,
27a are brought into contact with the corresponding inclined surfaces of the sandwich 11 in close proximity to each other. Next, the cylinders 24, 24 are rotated at the same speed in synchronization with the intermittent running of the conveyor belt 18.
Is moved downstream along the guide rods 23, 23, and as shown in FIG. 6, the sandwich 11 is moved by the conveyor belt 18 and the push plates 27, 27 toward the extended portion of the strip film F (on the conveyor). At the downstream side).

As shown in FIG. 5, the pull-out portion 27b slightly protrudes downstream from the bottom surface of the sandwich 11 or is located at the same position with the pushing portion 27a in contact with the inclined surface of the sandwich 11. It is set to face. Thereby, when the band-shaped film F is wound around the sandwich 11, the drawn-out portion 27b is
, The deformation of the bottom surface of the sandwich 11 due to the drawing resistance of the film F is prevented. Further, the support portion 27c is positioned so as to face a position which is the same as the top of the sandwich 11 or slightly protrudes upstream. In addition, the level of the upper and lower ends of the pushing plate 27 itself is sandwich 1
1 is set to be substantially the same level as both ends in the thickness direction (upper and lower ends in the height direction on the conveyor), and while the band-shaped film F is wound around the sandwich 11 and the film F is cut with a seal. The sandwich 11 is supported by the pushing plates 27, 27 from both sides to prevent the sandwich 11 from being crushed by the film F.

[0020]

[About the supply mechanism of the belt-like film] A support frame 28 is erected on the machine frame 12, and a roll holder 29 is provided on the support frame 28 so as to face above the supply conveyor 14 as shown in FIG. It is arranged to be rotatable.
This roll holder 29 contains the sandwich 11 to be packed.
Transparent film F set wider than the length of the base
Is wound so as to be freely inserted and removed. And the belt-shaped film F of the film roll 30 is:
Feeding roller 32 driven to rotate by a driving motor 31
And the supply conveyor 14 via a plurality of guide rollers 33 and tension rollers 34.
Is supplied downward from above so as to intersect with the transport direction on the downstream side of. A film winding roller 36, which is rotatably driven by a drive motor 35, is rotatably supported at a position facing the lower side of the supply conveyor 14 in the machine frame 12, and the strip film F supplied to the downstream side of the supply conveyor 14 is rotatably supported. Are the tension roller 37 and the guide roller 3
The film is wound around the film winding roller 36 via the roller 8 and is held in an expanded state on the downstream side of the supply conveyor 14.

Further, the guide roller 38 disposed in the film path below the supply conveyor 46 is provided with pulse transmitting means 40 including a slit disk for counting the film supply amount and an optical sensor. . After the sandwich 11 is pressed against the band-shaped film F and the film F is wound around the band-shaped film F, after the band-shaped film F is seal cut (fusing seal) on the upstream side in the transport direction of the sandwich 11, the drive motor 35 starts rotating. By doing so, when the film winding roller 36 is rotating and film winding is being performed, when the pulse number of a predetermined number of pulses is input from the pulse transmitting means 40 in accordance with a preset winding amount. It is set so that the drive motor 35 stops rotating to stop film winding. As a result, the sandwiched film 11 is stretched on the downstream side of the supply conveyor 14 in a state in which the seal-cut seal portion of the film strip F is moved to a position not used for packaging the sandwich 11 next time. It may be a packaging form in which one seal portion faces the top side of the.

Tension roller 3 provided below
7 is always held at the lower position shown in FIG. 4 and rises when the strip-shaped film F is pulled out and wound around the sandwich 11, and after the strip-shaped film F is cut off with a seal, the air cylinder 41 is forcibly forced. Is lowered to a fixed position below. In addition, the tension roller 34 provided above is always held at the lower origin position shown in FIG.
It is configured to rise when it is wound around. Further, an origin sensor 42 for detecting the origin position of the roller 34 is provided in the support mechanism of the tension roller 34. Then, after the sealing of the strip film F is cut, the tension roller 37 is forcibly lowered by the air cylinder 41 and a predetermined amount of the strip film F is wound by the winding roller 36, and the feeding roller 3 is rotated.
When the origin sensor 42 detects that the tension roller 34 has been lowered from the raised position to the origin position by the belt 2 being rotated and the belt-shaped film F being pulled out from the film roll 30, the feeding roller 32 is stopped. Has become. As a result, the upper and lower tension rollers 34,
Between 37, the belt-like film F for the next packaging is stretched and held.

[0023]

[About the fusing sealer of the band-shaped film] As shown in FIG. 4, a pair of fusing sealers 43 and 44 heated up and down by an appropriate built-in heater can be moved up and down further downstream of the expanded portion of the band-shaped film F. It is arranged. Then, the supply conveyor 14 and the pushing plates 27, 2
After the sandwich 11 conveyed to a position beyond the film extending portion by the gripper 7 is gripped by the gripping member 53 of the transfer conveyor 46 described later, the band-shaped film F is sandwiched by the two sealers 43 and 44 approaching each other. The seal 11 is configured so that the seal is cut at a position approximately half the thickness direction of the sandwich 11 on the upstream side in the supply direction. The sandwich 11 sandwiching the sealers 43 and 44
Guides 45, 45 are disposed on both sides in the conveying direction of the sheet F. When the seals are cut by the sealers 43, 44, the film F is sandwiched between the guides 45, 45 which are opposed to each other vertically. In addition, between the extended portion of the band-shaped film F and the position where the fusing sealers 43 and 44 are provided, the guide rollers 121 and
121 is provided, and the belt-like film F drawn by the sandwich 11 conveyed by the supply conveyor 14 and the pushing plates 27, 27 is guided downstream without contacting the sealers 43, 44. is there.

[0024]

[Transport Conveyor] As shown in FIG. 1, a transfer conveyor 46 is provided downstream of the supply conveyor 14 for transporting the sandwich 11 wrapped and wound by the band-shaped film F while gripping the sandwich 11 from the thickness direction. The transfer conveyor 46 includes a pair of side plates 47,
Drive shaft 4 at the upstream end and the downstream end
8 and a driven shaft 49 are rotatably supported by a pivot. Two drive sprockets 50, 50 are rotatably disposed on the drive shaft 48 at a distance in the axial direction.
9, two driven sprockets 51, spaced apart in the axial direction,
An endless chain 52 is provided between each pair of the driving sprocket 50 and the driven sprocket 51.
Are wound around each. That is, both side plates 47, 47
In between, a pair of endless chains 52, 52 are arranged to run freely in a parallel state.

A plurality of gripping members 53 are installed on the pair of endless chains 52, 52 at predetermined intervals in the traveling direction.
As shown in FIG. 8, the gripping member 53 is fixed to the endless chains 52, 52 via a projection 54b projecting from the bottom surface of the horizontal portion 54a of the L-shaped fixing plate 54. A movable plate 55 is provided on the plate 54 so as to be able to approach and separate in a posture parallel to a vertical portion 54c rising vertically from the horizontal portion 54a. That is, a rod 56 is slidably inserted into the protrusion 54b, and a movable plate 55 is disposed at one end of the rod 56 via a protrusion 55a. A regulating member 57 is provided near the other end of the rod 56, and the regulating member 57 and the protrusion 54b are provided.
, A compression spring 58 is elastically interposed therebetween so as to always bias the movable plate 55 in a direction approaching the vertical portion 54c. Then, the movable plate 55 of the gripping member 53 facing the receiving position of the sandwich 11 supplied from the supply conveyor 14 is separated from the vertical portion 54c by a plate opening mechanism 60 described later.
(See FIG. 8), sandwich 11 around which film F is wound
Is received between the two members 54c and 55. Then, after receiving the sandwich 11, the operation of the plate opening mechanism 60 is released, so that the movable plate 55 approaches the vertical portion 54c and approaches the sandwich 11
Are elastically gripped (see FIG. 9). In FIG. 2, reference numeral 59 denotes the pushing plate 27,
A guide bed for guiding the sandwich 11 supplied by 27 to the gripping member 53 in a horizontal state is shown. The guide bed 59 is formed with a triangular concave portion 59a that allows the gripping member 53 to pass therethrough.

The transfer conveyor 14 is intermittently driven at a required timing after the sealing of the band-shaped film F is cut by the fusing sealers 43 and 44, and intermittently conveys the sandwich 11 held by the holding member 53 to the downstream side. It is configured. The vertical portion 54c and the movable plate 55 of the gripping member 53 are connected to the sandwich 1 as shown in FIG.
1, the film 13 wound around the sandwich 11 while the sandwich 11 is gripped by the gripping member 53, as described later.
The side extending portion 13a and the downward extending portion 13b can be bent.

[0027]

[Regarding the release mechanism of the gripping member] The transfer conveyor 46
A mechanism 60 for opening the movable plate 55 of the gripping member 53 is disposed on the upstream and downstream sides, respectively. Since the structures of both mechanisms 60 are the same,
Only the structure of the opening mechanism 60 disposed on the upstream side will be described.

As shown in FIG. 8, the first shaft is provided at a position facing between the two drive sprockets 50, 50 on the drive shaft 48.
An arm 61 is pivotally supported rotatably, and a substantially middle position of an arc-shaped operation lever 62 is pivotally supported at a tip end of the arm 61. Further, both side plates 47, 47 downstream of the drive shaft 48 are provided.
An operating shaft 63 is rotatably supported between the operating shaft 63 and the operating shaft 63.
The second arm 64 is rotatably pivotally supported. The tip of the second arm 64 is connected to the operating lever 6.
When the operating shaft 63 is rotated in the forward and reverse directions by a driving means (not shown), the operating lever 62 swings and its free end (upstream end). Thus, the projection 55a of the movable plate 55 is moved in a direction away from the projection 54b. This allows
Vertical portion 54c of fixed plate 54 in gripping member 53
The distance between the movable plate 55 and the movable plate 55 is larger than the thickness of the sandwich 11, so that the sandwich 11 can be easily received.

[0029]

[First folded body] As shown in FIG. 10, the support plate 6 is attached to the machine frame 12 facing one side of the transfer conveyor 46.
The support plate 65 is provided with two roller sets each including a pair of guide rollers 66, 66 that are separated in the transport direction and that are vertically separated from each other. The guide bar 67 is slidably supported in the up-down direction by the two roller sets, and a cam plate (not shown) rotatably driven by a drive motor (not shown) is provided at a lower end of the guide bar 67. Is connected to the rod 68. At the upper end of the guide bar 67, a holding body 69 that extends above the transfer conveyor 46 is provided, and a support rod is provided at an upper position of the holding body 69 that sandwiches the gripping member 53 in a direction intersecting the transport direction. 70 is provided so as to always protrude downward under the elasticity of the compression spring 71. At the lower end of each support rod 70, a first bent body 7 extending toward the other support rod 70
2 is rotatably supported, and when the guide bar 67 is lowered, the film 13 faces each inclined surface of the sandwich 11 gripped by the gripping member 53.
However, as shown in FIG. 11, each of the first bent members 72 can be bent along a corresponding inclined surface. Since the first bent body 72 can rotate so as to follow the inclined surface of the sandwich 11, the film 13 can be reliably bent. As the material of the first bent body 72, plastic is preferably used.
Metals such as iron and other materials can be used as appropriate as long as they can be bent without damaging the sandwich 11 and do not crush the sandwich 11.

Further, a pressing plate 73 is vertically provided at the lower end of the support rod 70, and outside the side plates 47,
A sealer 74 heated by a built-in heater is provided at a position directly below the holding plate 73. Then, when the guide bar 67 is lowered and the film 13 is bent along the inclined surfaces by the first bending bodies 72, 72, the film 13 extending outward from the bottom surfaces of the film 13 and the sandwich 11 is formed. A temporary seal is provided by sandwiching the vicinity of the base portion of the overlapping portion with and with the pressing plate 73 and the sealer 74 to form the linear seal line 130 (see FIG. 17 (b)). . This prevents the film 13 bent along the inclined surface from returning to the original state, so that the subsequent process can be performed favorably. As shown in FIG. 7, the holding plate 73 is set to have a shape in which the linear seal lines 130, 130 are formed on the film 13 at two locations near both ends in the thickness direction of the sandwich 11.

[0031]

[About the second bent body] The first bent body 72, 72
A support 75 which is moved up and down and moved in the transport direction by a driving means (not shown) is provided downstream of the disposition position in the transport direction, and the first folder is located at a position of the support 75 facing above the transfer conveyor 46. A second portion for bending the upstream side extending portion 13a extending outward from the inclined surface formed by bending the film 13 along the inclined surface of the sandwich 11 by the bent bodies 72, 72. A bent body 76 is provided. This second bent body 76 is the same as that shown in FIG.
As shown in the figure, a pair of holding members 77, 7 formed in a U-shape.
7 are arranged opposite to each other in a C-shape substantially parallel to the inclined surface of the sandwich 11, and a shaft 78 is provided on each holding member 77. A plurality of rollers 79 are loosely fitted on the shaft 78 so as to be rotatable and displaceable in the radial direction.

That is, when the sandwich 11 is intermittently conveyed while being held by the holding member 53 of the transfer conveyor 46 and stopped at a predetermined position, the support body 75 is lowered to move the second bent body 76. Face the upstream side of the sandwich 11. Next, the support 75 is placed in the sandwich 1
1 so that the lateral extension 13
a and 13a are bent along the inclined surface of the sandwich 11 by the roller group of the bent body 76. Since the roller 79 is configured to be able to be displaced in the radial direction with respect to the shaft 78, the roller 79 moves in accordance with a slight change in the outer dimension of the sandwich 11 and laterally extends without damaging the sandwich 11. The protrusion 13a can be bent. The second bent body 76 is the sandwich 1
It is set so that 1 moves up toward a third bent body 80 described later at an appropriate timing when it moves by the next intermittent conveyance, and then moves backward (moves to the upstream side) to an initial standby position.

[0033]

[About the third bent body] Downstream side extending portions 13a, 13a extending outward from the inclined surface of the sandwich 11 are bent downstream of the position where the second bent body 76 is provided. (See FIG. 15). As shown in FIG. 12, the third bent body 80 has basically the same configuration as the second bent body 76, and therefore, the same members are given the same reference numerals and will be described in detail. Is omitted. However, the third bent body 80 is fixedly provided on the transport path of the sandwich 11. And sandwich 1
When 1 passes through the position where the third bent body 80 is provided, the laterally extending portions 13a, 13a are bent by a group of rollers along the inclined surface. At this time, the downstream side extension 1 is placed on the upstream side extension 13a, 13a already bent to the inclined surface by the second bent body 76.
3a and 13a are bent so as to overlap each other,
a and 13 a are held in a bent state by the third bent body 80. The height of the third bent body 80 with respect to the transfer conveyor 46 can be adjusted in accordance with the external dimensions of the sandwich 11 conveyed by the gripping member 53.

Further, on the downstream side from the position where the third folded body 80 is disposed, the gripping member 53 of the transfer conveyor 46 is sandwiched in the direction intersecting the conveying direction, and vertically along the moving direction of the gripping member 53. Bending guides 81 and 82 (to be described later in detail) forming a pair are arranged. And this bending guide 81,8
The upper part of the upper part 2 supports the vicinity of the base of the lower extension part 13b extending outward from the bottom surface of the sandwich 11 up and down, and is folded along the inclined surface by the second and third bent bodies 76 and 80. It functions to prevent the bent side extending portions 13a, 13a from returning to the original state. Note that the level of the lower folding guide 82 is determined by the tape attaching mechanism 10 described later.
2 is set to be higher than the upper surface level of the table 88, so that the lower extension 13b is supplied above the table 88 in a floating state.

[0035]

[Tape affixing mechanism] Tape affixing mechanisms 102 for affixing the tape 83 to the lower extending portions 13b, 13b of the film 13 are provided on both sides of the transfer conveyor 46 on the downstream side of the third bent body 80, respectively. Is established. Since the structures of the two tape attaching mechanisms 102 and 102 are the same, the attaching mechanisms 102 provided on the left side in FIG.
Only the structure described above will be described, and the other same members will be assigned the same reference numerals and detailed description thereof will be omitted.

The tape adhering mechanism 102 shown in the figure has two piston rods 84a, 84a which are directed to the outside of the first cylinder 84 disposed in and fixed to the machine frame 12 (the direction away from the transfer conveyor 46). The holder 87 of the tape roll 86 is rotatably disposed via the bracket 85, and the tape 83 drawn out from the tape roll 86 is placed inside the bracket 85 with the sticking surface facing upward. A table 88 to be placed is arranged horizontally. Then, the tape roll 84 and the table 88 are moved toward and away from the transfer conveyor 46 by urging and moving the bracket 85 facing the standby position shown in FIG. Then, the tape 83 placed on the table 88 is set to face the lower part of the lower extension 13b of the film 13 extending from the bottom surface of the sandwich 11 gripped by the gripping member 53. .

A bracket 90 is vertically movably mounted on a support member 89 provided upright on the machine frame 12, and the second cylinder 91 and the third cylinder 9 are mounted on the bracket 90.
2 are arranged in an inverted state. A sticking member 93 made of an elastic material such as rubber or sponge is provided on the piston rod 91a of the second cylinder 91 provided outside, and the sticking member 93 extends the cylinder 91 from the piston rod 91a. By pressing the open end of the lower extending portion 13b of the film 13 facing the table 88 facing the tape affixing position close to the transfer conveyor 46, against the table 88. It functions to attach the tape 83 to the lower surface of the extension 13b. The piston rod 92a of the third cylinder 92
Are provided with pressing members 95, 95 slidably arranged in the vertical direction on both left and right sides of a perforation forming knife 94 described later. By urging the third cylinder 92 in the direction in which the piston rod 92a extends, the lower extension 13b is sandwiched between the third cylinder 92 and the receiving base 96 disposed below the lower extension 13b. Be composed. Then, with the downwardly extending portion 13b held between the holding members 95, 95 and the receiving base 96, the bracket 85 is moved to the first position.
The tape 83 is pulled out from the tape roll 86 by being moved to the standby position by the urging of the cylinder 84. Note that the bracket 85, the tape 83 drawn from the tape roll 86, pressing roll 97 which functions to be faced to the horizontal on the table 88, while being biased by a spring (not shown) in the tape b le 8 8 side It is arranged. The press roll 97 is formed of a material to which the tape 83 is difficult to stick.

A fourth cylinder 98 is disposed on the machine frame 12 at a position facing below the level at which the table 88 is disposed. Bracket 9
9 are provided. Then, a perforation forming knife 94 and a tape cutting knife 100 are arranged and fixed in parallel with each other at a predetermined interval on a portion of the bracket 99 facing the table 88, and the fourth cylinder 98 is connected to the piston rod 98.
By urging the bracket 99 downward in the direction in which a is pulled in, the perforation 101 is provided to the lower extension 13b and the tape 83 is cut at the same time. That is, the perforation forming knife 94 is disposed at a position facing above the receiving table 96, and the cylinder 98
When the bracket 99 is lowered by urging the
The perforation 101 for opening along the thickness direction of the sandwich 11 is provided to the lower extension 13b of the film 13 facing upward (see FIG. 17E). The pressing members 95, 95 are provided on both sides of the perforation forming knife 94.
95 is slidably provided, and the lower extension 13b is sandwiched between the holder 96 and the holding members 95, 95, so that the perforation 101 is imparted by the knife 94 reliably. At the same time, the displacement of the sandwich 11 is prevented.

Further, the tape cutting knife 100 is
When the bracket 83 is lowered by the urging of the fourth cylinder 98 when the bracket 83 is lowered outwardly from the open end of the lower extension 13b to which the tape 83 is attached by a predetermined length, It is designed to be cut. As a result, the tape 83 attached to the lower extension 13b
As shown in FIG. 17 (e), is cut off with a predetermined length remaining from the open end of the extension 13 b. A groove 88a is formed in the table 88 facing the lower part of the tape cutting knife 100, and the tape 83 is reliably cut by the knife 100 entering the groove 88a.

In the apparatus of the embodiment, the perforation forming knife 94 is arranged only on the tape attaching mechanism 102 arranged on the left side in FIG. 13, and the perforation 101 is formed only on one of the lower extending portions 13b. However, it is also possible to dispose perforation forming knives 94 on both tape adhering mechanisms 102, 102 and form perforations 101 on both downward extending portions 13b, 13b, respectively.

[0041]

[Bending guide] On both sides of the transfer conveyor 46, a pair of bending guides 81 and 82 are disposed in parallel with the conveyor 46, and the tape attaching mechanism 10 is provided.
The portion facing the upstream side of 2,102 functions to guide the downwardly extending portions 13b, 13b of the film 13 to the downstream side while supporting it from above and below as described above. Further, at a portion facing the downstream side of the tape applying mechanisms 102, 102, the lower extending portions 13b, 13b are configured to bend vertically upward (see FIG. 15). That is, the upper bending guide 81 is the same as that shown in FIGS.
As shown in FIG. 5, while being positioned so as to face above the vicinity of the base of the downwardly extending portion 13b extending outward from the bottom surface of the sandwich 11 gripped by the gripping member 53, the lower bending guide 82 is The horizontal portion 82a faces below the downwardly extending portion 13b. Further, the tape attaching mechanism 102 of the horizontal portion 82a in the lower folding guide 82
A vertical portion 82b which rises vertically at a predetermined height is formed at an outer edge separated from the transfer conveyor 46 at a position facing the downstream side of the transfer portion 46, and a predetermined length is provided downstream from the upstream end of the vertical portion 82b. An inclined portion 82c that is inclined upward is formed over the area. The vertical portion 82b extends in parallel with the upper bending guide 81 at a required interval as shown in FIG. Therefore, the lower extending portion 13b to which the tape 83 is attached by the tape attaching mechanism 102
The bending guide 82 is moved with the movement of the gripping member 53.
It is gradually bent upward along the inclined portion 8 2 c so as to finally face between the vertical portion 82 b and the other bending guide 81 in a substantially vertical state.

[0042]

[About the sticking mechanism of the downward extension] The bending guide 8
As shown in FIG. 7, near the downstream end of
An opening 82d is opened in 2b, and a sticking member 105 that moves forward and backward by the cylinder 104 toward the transport center of the transfer conveyor 46 faces outside of the opening 82d. The sticking member 105 has a plurality of U-shaped brackets 106 provided on a piston rod 104a of the cylinder 104.
A roller 107 (two in the embodiment) is loosely fitted so as to be rotatable and deflectable in the radial direction. Further, as shown in FIG. 14, the cylinder 104 is arranged to be inclined so as to move the sticking member 105 along the inclined surface of the sandwich 11. That is, at the timing when the sandwich 11 held by the holding member 53 reaches the position corresponding to the opening 82d and stops by the intermittent drive of the transfer conveyor 46, the cylinder 104
a, the sticking member 105 facing the outside of the bending guide 82 extends inward through the opening 82d, and the lower extending portion 13b in the vertical state is sandwiched by the sandwich 11a. Of the film 1 already bent along the inclined surface while the tape 83 attached to the downwardly extending portion 13b is bent along the inclined surface.
3 is attached. The bending guide 81 facing the inside of the vertical portion 82b is set to have a length that does not reach the opening position of the opening 82d, and is set so as not to interfere with the sticking member 105 that advances and retreats through the opening 82d.

[0043]

[Regarding the article discharging mechanism] At the downstream end of the transfer conveyor 46, the discharging members 109, 109 () which move forward and backward in the transport direction via a link mechanism 108 as shown in FIG. (Only one is shown) is arranged,
The discharge members 109 and 109 are positioned so as to move to a position where they can come into contact with the bottom surface of the sandwich 11 held by the holding member 53. That is, at an appropriate timing when the gripping member 53 of the transfer conveyor 46 reaches the discharge position of the sandwich 11 and stops intermittently, when the movable plate 55 is opened by the opening mechanism 60 described above, the release member 109,
By moving 109 toward the downstream side in the transport direction, the sandwich 11 of the gripping member 53 is pushed out and discharged out of the system via the chute 122.

[0044]

Next, the operation of the packaging apparatus according to the embodiment will be described. In addition, the strip-shaped film F is spread on the downstream side of the supply conveyor 14 in a state where the seal portion does not reach, and the sandwich 1 in the transfer conveyor 46 is provided.
It is assumed that the holding member 53 is on standby at the receiving position 1 with the movable plate 55 opened.

In this state, the concave portion 2 of the positioning base 22
With the sandwich 11 facing the 2a, the sandwich 11 is placed at the transport center of the transport belt 18 with its top directed toward the upstream side. Supply conveyor 1
When the detecting means 120 detects that the sandwich 11 has been conveyed to a predetermined position by the intermittent movement of the cylinder 4, the cylinders 24, 24 are urged, and
As shown in FIG. 5, the feeding portions 27a and 27a come into contact with both inclined surfaces of the sandwich 11 stopped at a predetermined position by the intermittent stop of the supply conveyor 14, as shown in FIG. Then, in synchronization with the intermittent movement of the supply conveyor 14, the two cylinders 24, 24
By moving to the downstream side along 3, the sandwich 11 is supplied from the bottom side toward the extending portion of the strip film F.

The stretched strip-shaped film F includes:
The pull-out portions 27b, 27b of the pushing plates 27, 27 first come in contact with each other, and the belt-like film F is pushed downstream with the forward movement of the plates 27, 27, so that the upper and lower tension rollers 34, 37 move upward. And the film F is pulled out. As a result, the strip-shaped film F is wound around the bottom surface and the side surface side (upper and lower surfaces on the supply conveyor) of the sandwich 11. Then, as shown in FIGS. 6 and 8, at the timing when the sandwich 11 arrives between the vertical portion 54 c and the movable plate 55 of the holding member 53 waiting at the receiving position and intermittently stops, the opening mechanism 60 Activate the operating lever 62 to move the movable plate 55
From the projecting piece 55a. Accordingly, the movable plate 55 moves toward the vertical portion 54c under the elasticity of the compression spring 58, and elastically grips the sandwich 11 from the thickness direction.

Next, the upper and lower fusing sealers 43, 44
Move close to each other, and cut off the band-shaped film F wound on the sandwich 11 by the contact of the fusing sealers 43 and 44 at the approximate center in the thickness direction on the inclined surface side of the sandwich 11. As a result, as shown in FIG. 17A, the sandwich 11 is wound around the film 13 on which the fusing seal line (seal portion) is formed at the approximate center in the thickness direction on the inclined surface side. The pushing plates 27, 27 are fixed to the film F
Until the cutting of the seal is completed, the sandwich 11 is held in a state of being supported from both sides, and the cylinders 24, 24 are appropriately separated from each other at appropriate timing when the sealers 43, 44 are separated from each other.
Is pushed backward, and the pushing plates 27, 27 are separated from each other. The two cylinders 24, 24 are
It retreats (moves upstream) along 23 and waits for the next sandwich 11 to arrive. The pushing plate 27,
The upper and lower end portions of 27 in the height direction face substantially the same positions as the upper and lower end portions of the sandwich 11, and the supporting portion 2
7c and 27c are near the rear end of the sandwich 11 in the supply direction.
(Near the top), the film F
When wound around the sandwich 11 by 3,44,
The shape of the sandwich 11 is not destroyed by the film F.

Here, when the band-shaped film F is seal-cut by the sealers 43 and 44, the air cylinder 4
1, the lower tension roller 37 is forcibly lowered to the lower fixed position, and the winding roller 36 is driven to rotate by the drive motor 35 to wind the belt-like film F. When the pulse transmitting means 40 provided on the guide roller 38 counts a preset number of pulses, the motor 35 stops and the winding of the belt-like film F stops. Thereby, the seal part attached to the band-shaped film F by the sealers 43 and 44 is moved to a lower position not used for the next packaging. That is, the device 1 of the embodiment
At 0, the sandwich 11 is wound around the tubular film 13 in which only one seal portion is formed substantially at the center of the sandwich 11 on the inclined surface side in the thickness direction. Further, the origin sensor 42 detects that the upper tension roller 34 has been lowered from the raised position to the origin position by the rotation of the feed roller 32 by the drive motor 31 and the belt-shaped film F being pulled out from the film roll 30. Upon detection, the motor 31 stops and the film drawing stops.
As a result, the belt-like film F for the next packaging is stretched and held between the upper and lower tension rollers 34 and 37.

The gripping member 53 which grips the sandwich 11 having the film 13 wound around it through the above-mentioned process is driven by the transfer conveyor 46 intermittently, so that the first bent body 72,
At the timing of intermittent stop after reaching below 72, as shown in FIG. 11, the guide bar 67 is lowered, and the film 13 facing each inclined surface of the sandwich 11 is turned into each first bent body. By 72, it is bent along the corresponding inclined surface. Also, the first bent body 72,
Film 1 folded along each inclined surface by 72
3 and the film 13 extending outward from the bottom surface of the sandwich 11, the linear seal line 1 is formed by the pressing plate 73 and the sealer 74 in the vicinity of the base thereof.
By forming 30 and 130, a temporary seal is applied (see FIG. 17B).

By the intermittent drive of the transfer conveyor 46,
After the holding member 53 holding the sandwich 11 reaches the downstream side of the position where the second bent body 76 is provided and stops, the support 75 descends, and moves the second bent body 76 upstream of the sandwich 11. Face to the side. Next, when the second bent body 76 moves to the downstream side, the upstream side extending portions 13a, 13a extending from the inclined surface of the sandwich 11 are bent along the inclined surface (FIG. 17 ( c)). The second folded body 76 is raised at an appropriate timing at which the gripping member 53 gripping the sandwich 11 is moved toward the third folded body 80 on the downstream side by the next intermittent drive. Retreat and return to the initial standby position.

When the gripping member 53 passes through the position where the third bent body 80 is disposed, the laterally extending portions 13a, 13a on the downstream side that extend outward from the inclined surface of the sandwich 11 are provided.
Are bent along the inclined surface by the third bent body 80 and overlap the upstream side extending portions 13a, 13a.
(See FIG. 17D). Then, the downwardly extending portions 13b, 13b extending outward from the bottom surface of the sandwich 11 are conveyed downstream while facing between the bending guides 81, 82. The lower extension 13b is conveyed to the downstream side in a state where the lower extension 13b is inclined slightly upward from the level of the bottom surface of the sandwich 11.

In each tape applying mechanism 102 arranged on the downstream side of the arrangement position of the third folded body 80, the tape 83 is horizontally placed on the upper surface of the table 88, and 88 faces the tape application position near the transfer conveyor 46. Therefore, when the gripping member 53 gripping the sandwich 11 arrives at the arrangement position of the joining mechanism 102, the downward extending portion 13b becomes to face the upper tape 83 placed on the table 8 8. Then, at the timing when the gripping member 53 stops intermittently,
When the second cylinder 91 is urged and the attaching member 93 descends to press the lower extension 13b against the tape 83, the tape 83 is attached to the lower surface of the lower extension 13b. Further, the third cylinder 92 is urged, and the pressing members 95, which are located on the left and right sides of the perforation forming knife 94,
95 is lowered, and the portion of the lower extension 13 b to which the tape 83 is not attached is clamped between the receiving stand 96 and the receiving portion 96.

[0053] Then, the second cylinder 91 is then retracted a joining member 93 is reverse biased upward, the first cylinder 84 is energized table 8 8 and the tape roll 86 toward the standby position movement By doing so, the tape 83 is pulled out from the tape roll 86. Tape roll 8
When 6 moves to the standby position, the fourth cylinder 98 is urged to lower the perforation forming knife 94 and the tape cutting knife 100. As a result, a perforation 101 for opening the sandwich 11 in the thickness direction of the sandwich 11 is provided on the downwardly extending portion 13b facing between the pressing members 95, 95, and the tape 83 is attached to the inclined surface side. (See FIG. 17 (e)). Note that FIG.
In the right side, only the tape 83 is stuck to the lower extension 13b on the right side, and the perforation 101 is not provided.

The downward extending portions 13b, 13b to which the tapes 83, 83 are attached are inclined portions 82c, 82 of the folding guides 82, 82 with the intermittent movement of the gripping member 53.
c, it is gradually bent upward, and finally brought into a substantially vertical state. This sandwich 11 is used as the bending guide 8
At the timing of intermittent stop after reaching the position of the opening 82d provided in the second cylinder 2, the respective cylinders 104 are urged, as shown by the two-dot chain line in FIG.
The lower extending portion 13 which extends inward through 2d and is in a vertical state
b is bent along the inclined surface of the sandwich 11, and the sticking margin of the tape 83 is attached to the film 13 already bent along the inclined surface. This allows
A package P in which the sandwich 11 is tightly packed with the film 13 is obtained (see FIG. 17F).

At an appropriate timing when the gripping member 53 gripping the sandwich 11 arrives at the discharge position and stops due to intermittent movement, the opening mechanism 60 operates to open the movable plate 55 of the gripping member 53. Further, the link mechanism 108 is operated, and the discharging member 1 connected thereto is operated.
By moving 09 and 109 toward the downstream side, the sandwich 11 is extruded from the gripping member 53 and discharged out of the system via the chute 122.

As described above, the sandwich 1 is formed by the strip-shaped film F continuously drawn from the film roll 30.
1 can be packaged, so that manufacturing efficiency can be significantly improved. In addition, a change in thickness due to a change in the number of stacked sandwiches 11 or the like can be easily dealt with only by changing the supply amount of the film F without changing the width of the band-shaped film F. Therefore, it is not necessary to prepare films of various dimensions according to the thickness dimension of the sandwich 11, and the packaging material cost can be reduced. Moreover, since the perforation 101 is provided to the one downward extension portion 13b, it is possible to easily open the perforation 101 as a guide.

[0057]

[About another embodiment] FIG. 18 shows another embodiment. The structure until the side extending portions 13a, 13a of the film 13 wound around the sandwich 11 is bent is shown in FIG. However, it is configured so that both the downward extending portions 13b, 13b of the film 13 are cut by the seal without being attached to the inclined surface of the sandwich 11. That is, on the downstream side of the third bent body 80, the seal cutting mechanisms 110, 110 are arranged opposite to each other on both sides of the transfer conveyor 46. Both seal cutting mechanism 11
Since the structures of 0 and 110 are the same, only the structure of the mechanism 110 disposed on the left side will be described.

A lower fusing sealer 111, which is heated by a built-in heater, is fixedly arranged at a position facing below a downward extending portion 13b extending from the bottom surface of the sandwich 11 held by the holding member 53. An upper fusing sealer 113 heated by a built-in heater is provided at an upper position facing the lower fusing sealer 111 with the lower extension 13b interposed therebetween.
Are movably arranged by the cylinder 112. Then, the upper fusing sealer 113 is moved close to the lower fusing sealer 111, and the lower extension portion 1 is moved by both the sealers 111 and 113.
By sandwiching the extension 3b, the extension 13b is cut with a seal. The position where the seal is cut by the fusing sealers 111 and 113 is set near the base of the downwardly extending portion 13b.

Further, outside the positions where the fusing sealers 111, 113 are arranged, there is arranged a clamping means 114 which is urged by the cylinder 115 to clamp the open end of the downward extending portion 13b, and the clamping means 114 is provided. Thus, the seal is cut by the fusing sealers 111 and 113 while the lower extension 13b is held. Further, the clamping means 114
Is configured to be rotatable by a rotary actuator 116, and after rotating the holding portion of the holding means 114 holding the cutting chips of the downwardly extending portion 13b cut off by sealing so as to point downward, the cylinder 115 The cutting debris can be discharged to the outside of the machine by reversely urging and opening it. Alternatively, a welding sealer and a knife may be provided, and the lower extending portion 13b may be welded by the welding sealer and then cut by the knife.

In the case of this embodiment, both seal cutting mechanisms 110, 110 are activated at the timing when the sandwich 11 passing through the position where the third folded body 80 is disposed reaches the mechanism section and is intermittently stopped. Downward extension 13b,
13b is seal cut from its base. That is, since the downwardly extending portion 13b is not superimposed on the inclined surface side of the sandwich 11, a neat appearance can be obtained, and the sandwich 11 can be wrapped in a sealed state by a fusing seal, which is excellent in hygiene. Can be obtained. Further, the bending guide 103 and the attaching mechanism of the lower extension 13b can be omitted.

FIG. 19 shows still another embodiment, in which one downward extension portion 13b of the film 13 wound around the sandwich 11 is attached to the inclined surface by the tape 83 and the other downward direction. The extension 13b is configured to be cut by a seal. That is, on the downstream side of the third bent body 80, the tape sticking mechanism 102 is provided on one side of the transfer conveyor 46, and the seal cutting mechanism 110 is provided on the other side. Further, in this embodiment, at a timing when the sandwich 11 passing through the position where the third folded body 80 is disposed reaches the mechanism portion and is intermittently stopped, the one downward extension portion 13b is passed through the tape attaching mechanism 102. While the tape 83 is stuck, the other lower extension 13b is cut off from the base by the seal cutting mechanism 110. In this embodiment, the bending guides 81 and 82 of the downward extending portion 13b and the attaching mechanism are provided only on the side where the tape attaching mechanism 102 is provided.

In yet another embodiment shown in FIG. 19, the outer appearance can be similar to that of the conventional packaging form using a bag already produced. Further, as compared with another embodiment shown in FIG. 18, the downward extension portion 1
It is possible to reduce the cutting waste of 3b.

In the embodiment, the case where the tape 83 is used as a means for adhering the downward extending portion 13b to the inclined surface has been described, but the present application is not limited to this, and, for example, the product name and contents. You may make it stick by the label which printed the amount etc. After the lower extension 13b is bent along the inclined surface, a tape or a label is attached between the lower extension 13b and the film 13 on the inclined surface side to incline the lower extension 13b. It is also possible to attach it to the surface. Further, in the embodiment, the tape 83 is pulled out from the direction intersecting the conveying direction of the sandwich 11 and attached to the downward extending portion 13b, but the tape 83 pulled out from the direction parallel to the conveying direction is attached to the downward extending portion 13b. You may do it. Further, it is not always necessary to provide the perforations 101 on the downward extension 13b.

In the transfer conveyor 46 of the embodiment, a description will be given of a case where the sandwich 11 held by the holding member 53 is conveyed along the upper conveying path with the top of the sandwich 11 facing upward to perform various bending. However, the sandwich 11 may be bent while being conveyed along the lower conveying path with the top of the sandwich 11 pointing downward. Further, the gripping member 53 may be moved horizontally with the attitude in which the sandwich 11 is received at the receiving position. Furthermore,
In the embodiment, the sandwich 11 is supplied toward the strip film F stretched in the vertical direction, but the present invention is not limited to this, and the sandwich 11 is fed from above toward the strip film F stretched in the horizontal direction. The gripping member 53 of the transfer conveyer 46 in which the sandwich 11 in which the film F is supplied and which is wound around the film F is positioned below the film extending portion.
It is also possible to hold with.

[0065]

As described above, according to the method and apparatus for packaging a flexible packaged object such as a sandwich according to the present invention, the packaged object is wrapped by the continuous strip-shaped film drawn from the supply source. Since it is not necessary to manufacture bag-making bags of various sizes, the packaging cost can be reduced. In addition, even if there is a change in the external dimensions of the packaged item, the film can be tightly adhered according to the size of the packaged item for tight packaging, improving the commercial value and using the film efficiently. As a result, the packaging material cost can be kept low.

Further, a series of operations from the winding of the film around the object to be packaged to the sealing of the extended portions of the film can be automated, and labor can be saved. Furthermore, since it is not a method of inserting the object to be packaged in the bag, in the case of an object to be packaged such as a sandwich, the contents of the sandwich do not rub against the inner surface of the film and stain the film, which reduces the commercial value. There is also an advantage to improve.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram illustrating an entire packaging device according to an embodiment.

FIG. 2 is a plan view of an essential part of a mechanical portion that constitutes a body-wrapping means.

FIG. 3 is a side view of a main part of a mechanical part that constitutes a body-wrapping means.

FIG. 4 is a side view of a main part of a mechanical part that constitutes a body-wrapping means.

FIG. 5 is an explanatory view showing a process of body-wrapping a band-shaped film on a sandwich by a body-wrapping means.

FIG. 6 is an explanatory view showing a process of body-wrapping a band-shaped film on a sandwich by means of body-wrapping means.

FIG. 7 is a schematic side view showing a transfer conveyor.

FIG. 8 is a schematic side view of a main part showing a state in which a movable plate in the gripping member is opened by an opening mechanism.

FIG. 9 is a schematic side view of a main part showing a state in which a movable plate of the gripping member is released from an opening mechanism.

FIG. 10 is a front view of the first bent body taken along line XX of FIG. 7;

FIG. 11 is an explanatory view showing a state where a film wound around a sandwich by a first bent body is bent along an inclined surface.

FIG. 12 is a front view of the second and third bent bodies indicated by line XII-XII in FIG. 7;

FIG. 13 is a rear view of the tape attaching mechanism indicated by line XIII-XIII in FIG. 7;

FIG. 14 is a rear view of the bending guide and the sticking mechanism shown by the line XIV-XIV in FIG. 7;

FIG. 15 is a schematic plan view of a main part showing the transfer conveyor at a position where a bending guide is provided.

FIG. 16 is a schematic side view showing a sandwich release mechanism.

FIG. 17 is an explanatory diagram showing a process of packaging a sandwich with a film by the packaging device according to the example.

FIG. 18 is an explanatory diagram showing a main part of another embodiment of the packaging device according to the present invention.

FIG. 19 is an explanatory view showing a main part of still another embodiment of the packaging device according to the present invention.

[Explanation of symbols]

 11 Sandwich (Item to be Wrapped) 13 Cylindrical Film 13a Side Extension 13b Downward Extension (Extension) 14 Supply Conveyor (Circle Wrapping Means) 27 Pushing Plate (Circle Wrapping Means) 30 Film Roll (Supply Source) 32 Feeding Roller (Curly Wrapping Means) 34 Tension Roller (Curly Wrapping Means) 36 Film Take-up Roller (Curly Wrapping Means) 37 Tension Roller (Curly Wrapping Means) 43 Fusing Sealer (Curly Wrapping Means) 44 Fuse Sealer (Curly Wrapping Means) 46 Transfer Conveyor 72 1st Bending Body (1st Bending Means) 76 2nd Bending Body (2nd Bending Means) 80 3rd Bending Body (3rd Bending Means) 81 Folding Guide (Bending and pasting) Adhering means) 82 Bending guide (bending and adhering means) 102 Tape affixing mechanism (bending and adhering means) 105 Adhering member (bending and adhering means) 110 Seal cutting mechanism (seal cutting means) F Band-shaped flap Lum

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-50-66386 (JP, A) JP-A-63-307014 (JP, A) JP-A-4-294716 (JP, A)

Claims (15)

(57) [Claims] 1. A method for wrapping a soft packaged object (11) having a triangular shape such as a sandwich, the bottom side facing the apex of the packaged object (11) whose interior angle is set to about 90 °. A strip-shaped film (F) having a width wider than the required length is drawn out from the supply source (30) by the supply mechanism of the film (F) and crosses the direction of supply of the article to be packaged (11) vertically. Direction, and placed on the supply conveyor (14) and conveyed intermittently, the article to be packaged (11 ) is paired with the strip film (F) on the bottom side on the bottom side.
In a facing posture, in synchronization with the intermittent operation of the supply conveyor (14), the pushing means (2 ) for pushing toward the spreading portion of the belt-shaped film (F).
Supplied by 7), filmstrip to be packaged (11) by said pusher means (27)
When it is pushed toward the expansion part of (F),
The upper and lower ends of the front end in the feeding direction are supported by the pull-out means (27b)
The packaged articles is pulled out strip film (F) from a source by then wrapping (11), to be packaged, wherein the filmstrip (F) is wrapping (11), off
Irumu resiliently grip Then from the thickness direction with (F)
Both the upper and lower surfaces of the front end of the packaged object (11) and the supply method
Supports the upper end in the height direction near the rear end
While being supported by the means (27b, 27c) , the fusing sealer (43, 44) is operated by abutting operation at the rear portion in the feeding direction of the packaged article (11).
The band-shaped film (F) is sealed and cut by making the band-wrapped object (11) after the band-shaped seal of the band-shaped film (F) sealed.
After receiving the transfer conveyor (46), the transfer conveyor (46)
When transferring to the downstream side while holding the packaged object (11) more
The bending means (72) from the top toward each slope.
By moving, wrapping is tubular to be packaged in the film (13) of the inclined surfaces opposite to the site (11), folded so along from the top to the inclined surfaces, the articles to be packaged (11) Contact thickness direction upstream side of the inclined surfaces in the
And the respective laterally extending portions (13a, 13a) of the film (13) extending outward from the respective sides on the downstream side and along the inclined surface by the bending means (76, 80). Bending and polymerizing , the film extending portion (13b) extending outward from the side in contact with at least one inclined surface of the bottom surface of the article to be packaged (11 )
By the operation of the bending attachment means (81, 82, 102, 105).
So that it overlaps each bent side extension (13a, 13a)
A method for wrapping a soft packaged object such as a sandwich, which is characterized in that it is bent along an inclined surface and attached. 2. A method for wrapping a soft packaged object (11) having a triangular shape such as a sandwich, the bottom side facing the top of the packaged object (11) having an interior angle set to about 90 °. A strip-shaped film (F) having a width wider than the required length is drawn out from the supply source (30) by the supply mechanism of the film (F) and crosses the direction of supply of the article to be packaged (11) vertically. Direction, and placed on the supply conveyor (14) and conveyed intermittently, the article to be packaged (11 ) is paired with the strip film (F) on the bottom side on the bottom side.
In a facing posture, in synchronization with the intermittent operation of the supply conveyor (14), the pushing means (2 ) for pushing toward the spreading portion of the belt-shaped film (F).
Supplied by 7), filmstrip to be packaged (11) by said pusher means (27)
When it is pushed toward the expansion part of (F),
The upper and lower ends of the front end in the feeding direction are supported by the pull-out means (27b)
The packaged articles is pulled out strip film (F) from a source by then wrapping (11), to be packaged, wherein the filmstrip (F) is wrapping (11), off
Irumu resiliently grip Then from the thickness direction with (F)
Both the upper and lower surfaces of the front end of the packaged object (11) and the supply method
Supports the upper end in the height direction near the rear end
While being supported by the means (27b, 27c) , the fusing sealer (43, 44) is operated by abutting operation at the rear portion in the feeding direction of the packaged article (11).
The band-shaped film (F) is sealed and cut by making the band-wrapped object (11) after the band-shaped seal of the band-shaped film (F) sealed.
After receiving the transfer conveyor (46), the transfer conveyor (46)
When transferring to the downstream side while holding the packaged object (11) more
The bending means (72) from the top toward each slope.
By moving, wrapping is tubular to be packaged in the film (13) of the inclined surfaces opposite to the site (11), folded so along from the top to the inclined surfaces, the articles to be packaged (11) Contact thickness direction upstream side of the inclined surfaces in the
And the respective laterally extending portions (13a, 13a) of the film (13) extending outward from the respective sides on the downstream side and along the inclined surface by the bending means (76, 80). The film is folded and polymerized, and a sheet is formed at the base of each film extending portion (13b) extending outward from the side in contact with each inclined surface of the bottom surface of the packaged article (11) .
If a sealing seal is applied by activating the cutting means (110)
Both have an extension (13b) that extends outward from the seal.
A method for packaging a soft packaged object such as a sandwich, which is characterized in that it is cut by the seal cutting means (110) . 3. A method of wrapping a soft packaged object (11) having a triangular shape such as a sandwich, the bottom side facing the top of the packaged object (11) having an interior angle set to about 90 °. A strip-shaped film (F) having a width wider than the required length is drawn out from the supply source (30) by the supply mechanism of the film (F) and crosses the direction of supply of the article to be packaged (11) vertically. Direction, and placed on the supply conveyor (14) and conveyed intermittently, the object to be packaged (11 ) is paired with the strip film (F) on the bottom side on the bottom side.
In a facing posture, in synchronization with the intermittent operation of the supply conveyor (14), the pushing means (2 ) for pushing toward the spreading portion of the belt-shaped film (F).
Supplied by 7), filmstrip to be packaged (11) by said pusher means (27)
When it is pushed toward the expansion part of (F),
The upper and lower ends of the front end in the feeding direction are supported by the pull-out means (27b)
The packaged articles is pulled out strip film (F) from a source by then wrapping (11), to be packaged, wherein the filmstrip (F) is wrapping (11), off
Irumu resiliently grip Then from the thickness direction with (F)
Both the upper and lower surfaces of the front end of the packaged object (11) and the supply method
Supports the upper end in the height direction near the rear end
While being supported by the means (27b, 27c) , the fusing sealer (43, 44) is operated by abutting operation at the rear portion in the feeding direction of the packaged article (11).
The band-shaped film (F) is sealed and cut by making the band-wrapped object (11) after the band-shaped seal of the band-shaped film (F) sealed.
After receiving the transfer conveyor (46), the transfer conveyor (46)
When transferring to the downstream side while holding the packaged object (11) more
The bending means (72) from the top toward each slope.
More be dynamic, the packaged articles in wrapping been tubular film (13) of the inclined surfaces opposite to the site (11), folded so along from the top to the inclined surfaces, the material to be packaged (11 Contact thickness direction upstream side of the inclined surfaces in)
And the respective laterally extending portions (13a, 13a) of the film (13) extending outward from the respective sides on the downstream side and along the inclined surface by the bending means (76, 80). bent by polymerization, the one film extending portion extending outwardly from the side in contact with the inclined surfaces of the bottom surface of the packaged articles (11) to (13b), bent
The bending attachment means (81, 82, 102, 105) has already been bent.
Bending and adhering along the inclined surface so as to overlap with each lateral extension (13a, 13a) , the other film extension (13
A sealing seal is provided by operating the seal cutting means (110) at the base of b) , and the extending portion (13b) extending outward from the seal portion is cut by the seal cutting means (110). A method for wrapping a soft packaged object such as a sandwich, which is characterized in that 4. A film extension portion (13b) extending outward from a side of the bottom surface of the article to be packaged (11) in contact with each inclined surface.
4. The soft sandwich or the like according to claim 1 or 3, wherein the perforation for opening is provided at an appropriate position from the base portion of the extending portion (13b) to the open end before the bending is performed along the inclined surface. Packaging method of the packaged object. 5. A seal is cut by the fusing sealer (43, 44).
The seal part of the strip film (F) that is cut off and faces the stretched part,
By pulling out the strip film (F) from the supply source (30),
Moved to a position where it will not be used for packaging
The next item (11) to be wrapped is wrapped in a wrapped state.
More, the wrapping is tubular film to be packaged (11) (13), term claims adapted to seal portion only in the top side of the package item (11) is formed 1, 2 or 4. A method for packaging a soft packaged object such as a sandwich according to any one of 3 above. 6. After bending so along the inclined surface of the portion facing the respective inclined surfaces of the articles to be packaged (11) in the wrapping has been tubular film to be packaged (11) (13), the inclined extending from the surface film (13) and according to any one of claims 1, 2 or 3 which is adapted subjected to temporary sealing the extending base portion near the overlapping portion of the film (13) extending from said bottom surface A method for packaging a soft package such as a sandwich. 7. A device for wrapping a soft packaged object (11) having a triangular shape such as a sandwich, the bottom side facing the top of the packaged object (11) whose interior angle is set to about 90 °. From the supply source (30) , pull out the strip-shaped film (F) with a required dimension wider than the length of the striped film (F) toward the stretched part of the strip-shaped film (F) , and from the direction intersecting this, the packaged object (11) It is supplied at a position facing the surface on the side belting film and (F), after wrapping the packaged articles is pulled out from a supply source (30) (11) said strip film (F),該被package (11 ) Of the belt-shaped film (F) in the supply direction rear part of the body wrapping means for sealing and cutting, and is arranged on the downstream side of the body wrapping means, and the wrapped article to be wrapped (11) ,
A transfer conveyor (46) that conveys the bottom side surface in a holding state at a predetermined interval in a posture of facing the conveyance surface, and can move close to and away from the conveyance surface while the transfer conveyor (46) is in the course of conveying articles. Arranged, the object to be packaged (11)
First bending means (72) for bending a portion of the tubular film (13) wound in the direction opposite to each inclined surface of the article to be packaged (11) from the top portion along each inclined surface, and the first bending means (72) . It is disposed on the downstream side of the folding means (72) and has the first
Each side extending portion (13a) extending outward from the side in the thickness direction upstream side of each inclined surface of the article to be packaged (11 ) in the film (13) folded by the folding means (72). Second folding means (76) for folding along the inclined surface, and a downstream side of the inclined surface of the article (11) arranged on the downstream side of the second folding means (76). Third bending means (80) for bending each laterally extending part (13a) of the outwardly extending film (13) along an inclined surface, and a downstream side of the third folding means (80) And at least one film extending portion (13b) extending outward from the transfer surface of the transfer conveyor (46 ) in the article to be packaged (11) is bent along the inclined surface, and Bending sticking means (81, for sticking the projecting portion (13b) to the film (13) located on the inclined surface (81,
82, 102, 105) and a packaging device for a soft package such as a sandwich. 8. A device for wrapping a soft packaged object (11) having a triangular shape such as a sandwich, the bottom side facing the top of the packaged object (11) having an interior angle set to about 90 °. required drawer filmstrip dimensions set wider to (F) from a source (30), the packaged articles (11) that base in the direction intersecting therewith towards the stretched portion of the belt-like film (F) than the length of It is supplied at a position facing the surface on the side belting film and (F), after wrapping the packaged articles is pulled out from a supply source (30) (11) said strip film (F),該被package (11 ) Of the belt-shaped film (F) at the rear in the supply direction, and the body-wrapping means for sealing and cutting, and the downstream side of the body-wrapping means, the body-wrapped object to be packaged (11) having a bottom surface. Conveyor that conveys paper while holding it at a predetermined interval while facing the conveyance surface
(46) and the transfer conveyor (46) are arranged so that they can move close to and away from the transfer surface while the transfer conveyor (46) is in the process of transferring the article, and the object to be packaged (11)
First bending means (72) for bending a portion of the tubular film (13) wound in the direction opposite to each inclined surface of the article to be packaged (11) from the top portion along each inclined surface, and the first bending means (72) . It is disposed on the downstream side of the folding means (72) and has the first
Each side extending portion (13a) extending outward from the side in the thickness direction upstream side of each inclined surface of the article to be packaged (11 ) in the film (13) folded by the folding means (72). Second folding means (76) for folding along the inclined surface, and a downstream side of the inclined surface of the article (11) arranged on the downstream side of the second folding means (76). Third bending means (80) for bending each laterally extending part (13a) of the outwardly extending film (13) along an inclined surface, and a downstream side of the third folding means (80) Is disposed in, the film extending portion (13b) extending outward from the surface of the article to be packaged (11) facing the transport surface of the transfer conveyor (46) is bent along an inclined surface, and Bending sticking means (81, 82, 1 ) for sticking the extension part (13b) to the film (13) located on the inclined surface
02, 105) and a packaging device for a soft package such as a sandwich. 9. A device for packaging a soft packaged object (11) having a triangular shape such as a sandwich, the bottom side facing the top of the packaged object (11) having an internal angle set to about 90 °. required drawer filmstrip dimensions set wider to (F) from a source (30), the packaged articles (11) that base in the direction intersecting therewith towards the stretched portion of the belt-like film (F) than the length of It is supplied at a position facing the surface on the side belting film and (F), after wrapping the packaged articles is pulled out from a supply source (30) (11) said strip film (F),該被package (11 ) Of the belt-shaped film (F) at the rear of the supply direction, and the body-wrapping means for sealing and cutting, and the body-wrapped object (11) that is arranged on the downstream side of the body-wrapping means and has the bottom surface. Conveyor that conveys paper while holding it at a predetermined interval while facing the conveyance surface
(46) and the transfer conveyor (46) are arranged so that they can move close to and away from the transfer surface while the transfer conveyor (46) is in the process of transferring the article, and the object to be packaged (11)
First bending means (72) for bending a portion of the tubular film (13) wound in the direction opposite to each inclined surface of the article to be packaged (11) from the top portion along each inclined surface, and the first bending means (72) . It is disposed on the downstream side of the folding means (72) and has the first
Each side extending portion (13a) extending outward from the side in the thickness direction upstream side of each inclined surface of the article to be packaged (11 ) in the film (13) folded by the folding means (72). Second folding means (76) for folding along the inclined surface, and a downstream side of the inclined surface of the article (11) arranged on the downstream side of the second folding means (76). Third bending means (80) for bending each laterally extending part (13a) of the outwardly extending film (13) along an inclined surface, and a downstream side of the third folding means (80) And the base of the film extending portion (13b) that extends outward from the surface of the article to be packaged (11) that faces the transport surface of the transfer conveyor (46) and that is outside the sealing portion. A packaging device for a soft package such as a sandwich, which comprises a seal cutting means (110) for cutting the extending portion (13b) at an appropriate position extending in one direction. 10. A device for packaging a soft packaged object (11) having a triangular shape such as a sandwich, the bottom side facing the top of the packaged object (11) having an internal angle set to about 90 °. From the supply source (30) , pull out the strip-shaped film (F) with a required dimension wider than the length of the striped film (F) toward the stretched part of the strip-shaped film (F) , and from the direction intersecting with this, put the object to be packaged (11) at the bottom. It is supplied at a position facing the surface on the side belting film and (F), after wrapping the packaged articles is pulled out from a supply source (30) (11) said strip film (F),該被package (11 ) Of the belt-like film (F) at the rear portion in the supply direction, and the body-wrapping means for sealing and cutting, and the body-wrapped object (11) that is arranged on the downstream side of the body-wrapping means and has the bottom surface. Conveyor that conveys paper while holding it at a predetermined interval while facing the conveyance surface
(46) and the transfer conveyor (46) are arranged so that they can move close to and away from the transfer surface while the transfer conveyor (46) is in the process of transferring the article, and the object to be packaged (11)
First bending means (72) for bending a portion of the tubular film (13) wound in the direction opposite to each inclined surface of the article to be packaged (11) from the top portion along each inclined surface, and the first bending means (72) . It is disposed on the downstream side of the folding means (72) and has the first
Each side extending portion (13a) extending outward from the side in the thickness direction upstream side of each inclined surface of the article to be packaged (11 ) in the film (13) folded by the folding means (72). Second folding means (76) for folding along the inclined surface, and a downstream side of the inclined surface of the article (11) arranged on the downstream side of the second folding means (76). Third bending means (80) for bending each laterally extending part (13a) of the outwardly extending film (13) along an inclined surface, and a downstream side of the third folding means (80) The one film extending portion (13b) extending outward from the surface of the article to be packaged (11) facing the transfer surface of the transfer conveyor (46) is bent along the inclined surface. Along with the folding sticking means (81, 82, 102, 105) for sticking the extending portion (13b) to the film (13) located on the inclined surface, and the conveyance of the transfer conveyor (46) in the article to be packaged (11) . Extends outward from the surface facing the surface The other film extension (1
A flexible material such as a sandwich characterized in that it is composed of a seal cutting means (110) for cutting the extending portion (13b) at an appropriate position extending outward from the sealing portion while sealing the base portion of 3b). A device for packaging items to be packaged. 11. A downstream side of the third bending means (80) ,
A perforation for opening is provided at an appropriate position from the base to the open end of the film extending portion (13b) extending outward from the surface of the article to be packaged (11) that faces the transfer surface of the transfer conveyor (46). claim 7,8 comprises a perforation forming means (94) for imparting also
Is a packaging device for a soft package such as a sandwich according to 10 . 12. The bending and attaching means is the article to be packaged.
(11)Transfer conveyor in(46)Surface facing the transport surface of
Film extension part that extends outward from(13b)To the slope side
Tape sticking to stick the tape with the sticking allowance
Attachment means(102)And the extension(13b)Tilted from its base
Film folding guide that bends toward the surface(81,82)
And this extension(13b)Bend along the inclined surface
On the tape(83)The sticking allowance of is located on the inclined surface
the film(13)Attaching means to attach to(105)A contract with
Request7, 8 or 10Soft encapsulation such as described sandwiches
Equipment packaging equipment. 13. The folding and attaching means is the object to be packaged.
A film folding guide (81, 8 ) for bending the film extending portion (13b) extending outward from the surface facing the transport surface of the transfer conveyor (46 ) in (11) from its base toward the inclined surface side.
2) and the extending portion (13b) bent toward the inclined surface side
11. A packaging device for a soft package such as a sandwich according to claim 7, 8 or 10, further comprising: a tape (83 ) for tape-adhering or labeling the film (13) located on the inclined surface or a means for adhering a label. 14. A belt-shaped film formed by the body-wrapping means.
Seal cutting portion formed in tubular film after sealing off (13) of (F) is to be formed only one place on the top side of the package item (11), the material to be packaged (11) A film feeding means (32) for controlling the feeding of the strip-shaped film (F) stretched in a direction intersecting with the supply direction .
A packaging device for a soft packaged object such as a sandwich according to any one of 9 and 10 . 15. moved synchronously with the movement of said first folding means (72), the articles to be packaged by the first folding means (72)
Items to be packaged in a tubular film (13) wound around (11) (1
When the bent so along the portion facing the respective inclined surfaces of the 1) to the inclined plane, extending in the polymerization section of the film (13) extending from said bottom surface a film (13) extending from the inclined surface The provision of a temporary sealing means (74) for applying a seal in the vicinity of the base portion
A packaging device for a soft packaged object such as a sandwich according to any one of 7, 8, 9 and 10 .