JP2670658B2 - Flexible package supply device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a feeding apparatus suitable for feeding a flexible object to be packaged such as a sandwich toward a film stretched in a vertical direction intersecting the feeding direction of the package. It is about.

[0002]

2. Description of the Related Art Conventionally, there has been known a sleeve wrapping machine which supplies an object to be packaged toward a film stretched in a vertical direction intersecting an article supply direction, and then seals the film wound around the object to be packaged. . In an article supply system of this type of packaging machine, a package is pushed from the rear by a pusher or the like, and the front of the package in the supply direction is pressed against the film, so that the film is wound around the package from the supply source. It is designed to withdraw as much as you can. Then, the drawn film is sealed on the rear side in the supply direction of the object to be packaged with a sealer or the like that moves in the vertical direction, so that the object to be packaged is wrapped in a cylinder.

[0003]

In the above-mentioned article supply system, since the front portion in the supply direction of the packaged article pushed by the pusher or the like serves as the working surface for pulling out the film,
In the case where the packaged object has a flexible property such as a sandwich, not only the front part in the supply direction of the packaged object is deformed when the film is pulled out, but also the film wound around the packaged object in the supply direction of the packaged object. When sealing on the rear side, the films wound around the upper and lower surfaces of the packaged object are pulled in directions approaching each other with the movement of the sealer or the like, and the packaged object may be crushed by the film. There is.

[0004]

SUMMARY OF THE INVENTION The present invention has been proposed in view of the above-mentioned various problems inherent in the supply of a flexible packaged product, and is proposed in order to solve the problems. At the time, an object of the present invention is to provide a supply device capable of preventing the packaged object from being deformed or crushed.

[0005]

[Means for solving the problems] To overcome the above-mentioned problems,
In order to achieve the intended purpose, the present invention is to extend a film drawn from a supply source in a vertical direction intersecting the conveying path on the downstream side of the conveying path of the flexible object to be packaged, and packaging the film toward the film. In a packaging machine that winds a film drawn from the supply source by supplying an object over the upper and lower surfaces of the packaged object and seals the film at the rear side in the supply direction of the packaged object, Are disposed so as to be movable toward and away from each other toward the center of the transport path on both sides of the transport path, and push the packaged object toward the film when being moved forward along the transport path. Pushing means, provided at the front side in the supply direction of the packaged object in each of the pushing means, and when the pushing means is moved toward the center of the transport path, up and down in the height direction near the front end of the packaged article in the supply direction. Within the required range for the edge The first film engaging means for pulling the film from the supply source as the pushing means moves forward along the transport direction, and the first film engaging means provided in each of the pushing means on the rear side in the feeding direction of the packaged object, A second film engaging means that faces a required range with respect to at least the upper end in the height direction in the vicinity of the rear end of the article to be packaged when the pushing means is moved toward the center of the transport path, First
When sealing the film pulled out from the supply source by the film engaging means and wound around the upper and lower surfaces of the packaged article at the rear side in the supply direction of the packaged article, above the front end of the packaged article The film facing the lower surface side is supported by the first film engaging means, and the film facing at least the upper surface side of the rear end portion is supported by the second film engaging means. Also achieve the above objective
Therefore, another invention of the present application is, on the downstream side of the transport path of the packaged object,
The upper and lower sides where the film drawn from the supply source intersects the transport path
And then supply the packaged product toward this film.
The film drawn from the source by
The film is wrapped around the upper and lower surfaces of the
In the packaging machine that seals at the rear side of the supply direction of the accessory,
On both sides of the conveying path of the packaged object, face each other toward the center of the conveying path.
It is arranged so that it can move closer to and away from the
As close to the conveyance path center toward the upstream side from the
Flexibility that tilts and presents a planar triangular shape by its proximity movement
A pushing part that abuts along the corresponding inclined surface of the package
The object to be packaged when it is moved forward along the transport path.
With one of its tops directed upstream and
One surface on the downstream side facing the
A pair of pushing means for pushing toward the film in a tilted posture
And, in the feeding direction front side of the article to be packaged in each of the pushing means.
Provided when the pushing means is moved toward the center of the conveying path
In the height direction near the front end of the
Facing the upper and lower ends within the required range, the pushing means is in the conveying direction.
Source the film as it moves forward along
The first film engaging means to be pulled out from the
Is provided on the rear side in the feeding direction of the packaged object, and the pushing means is provided.
How to supply items to be packaged when moving toward the center of the transport path
At least the upper end in the height direction near the rear end
And a second film engaging means facing the required range,
It is pulled out from the supply source by the first film engaging means.
The film wrapped around the top and bottom surfaces of the package
When sealing on the rear side of the package in the feeding direction,
The film facing the upper and lower surfaces of the front end of the object is the first film.
Supported by the lum engaging means and at least above the rear end
The film facing the surface side is supported by the second film engaging means.
It is characterized in that it is configured to.

[0006]

After a pair of pushing means disposed on both sides of the transport path are moved toward each other toward the center of the transport path and then moved forward along the transport path, the articles to be packaged on the transport path are transferred to the transport path. The film is pushed toward the vertically stretched film that intersects the transport path on the downstream side of. The stretched film is pulled out from the supply source by the first film engagement means and is wound around the upper and lower surfaces of the article to be packaged as the pushing means moves forward. When the package reaches the required position, the film facing the upper and lower surfaces of the front end of the package is supported by the first film engaging means, and the film facing at least the upper surface of the rear end is the second film. While being supported by the film engaging means, the film is sealed on the rear side in the feeding direction of the package. Also, place one top on the upstream side.
The downstream side facing the top and facing
A plane triangle that faces the transport path in a position facing in parallel with the frame.
-Shaped items to be packaged, a pair of pushers placed on both sides of the transport path
When the means are moved close to each other toward the center of the transport path,
The pushing part of the pushing means along the corresponding inclined surface of the packaged object
Abut In this state, a pair of pushing means
By moving forward, both inclined surfaces of the packaged object are pushed.
It is pushed toward the film while being supported by the section.

[0007]

[Embodiments] Next, a flexible apparatus for supplying a material to be packaged according to the present invention will be described below with reference to preferred embodiments. In the embodiment, the inner angle of the top part is approximately 90 ° as a packaged object.
For isosceles triangular sandwiches set to.

FIG. 1 is a cross-sectional plan view showing the schematic structure of a supply device according to an embodiment of the present invention.
Further, a supply conveyor 14 for supplying the sandwich 11 toward the stretched portion of the strip-shaped film F described later is arranged. That is, a pair of frames 15, 15 that are separated from each other in a direction intersecting the transport direction are disposed on the machine frame 12, and a driven pulley 16 is rotatably supported between the upstream ends of the frames 15, 15. Further, a guide plate 17 is installed between the downstream ends of the frames 15 and 15, and an endless conveyor belt 18 wound between the downstream end of the guide plate 17 and the driven pulley 16 serves as the frame 15, It is wound around a drive pulley 19 which is rotatably supported at an appropriate position of 15 (FIG. 2).
reference). 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.
Between the driven pulley 16 and the guide plate 17, a bed 20 for supporting the conveyor belt 18 from below is provided in the frame 1.
It is installed between 5 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, 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. As shown in FIG. 1, a triangular recess 22a is formed. 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. .

A support frame 28 is erected on the machine frame 12, and a roll holder 29 is disposed on the support frame 28 so as to be rotatable in a cantilever manner so as to face above the supply conveyor 14, as shown in FIG. Set up. The roll holder 29 is provided with a film roll 30 around which a transparent band-shaped film F wound wider than the side of the side facing the top of the sandwich 11 to be packed is detachably inserted.
Then, the strip-shaped film F of the film roll 30 is drawn out by the feeding roller 32 which is rotationally driven by the drive motor 31, and is conveyed in the conveying direction on the downstream side of the supply conveyor 14 through the plurality of guide rollers 33 and the tension rollers 34. It is supplied from the upper side to the lower side so as to intersect with. In addition, the supply conveyor 1 in the machine frame 12
4, a film winding roller 36 rotatably driven by a drive motor 35 is rotatably supported at a position facing below 4, and the strip-shaped film F supplied below the supply conveyor 14 has a tension roller 37 and a guide roller 38. The film is wound onto the film winding roller 36 via the, and is held in a stretched state on the downstream side of the supply conveyor 14.

A guide roller 38 provided in the film path below the supply conveyor 14 is provided with a pulse discarding means 40 comprising a slit disk for counting the film supply amount and a photoelectric sensor or the like. . The sandwich 11 is supplied by the pushing plates 27, 27 described later and pressed against the band-shaped film F so that the film F
Is wound around, and after the band-shaped film F is sealed and cut (fused seal) on the upstream side in the transport direction of the sandwich 11, the winding motor 36 starts rotating by the drive motor 35 starting to rotate, and the film F is rotated. When the number of pulses corresponding to a predetermined number of pulses is input from the pulse transmission means 40 arranged on the guide roller 38 according to a preset winding amount in the winding state, the drive motor 35 is rotated. It is set so that the winding of the strip film F around the winding roller 36 is stopped. As a result, in the state where the seal-cut seal portion of the strip-shaped film F is moved to a lower position not used for packaging the sandwich 11 next time, the strip-shaped film F is provided on the downstream side of the supply conveyor 14.
The sandwich 11 can be wrapped with a tubular film in which one seal portion (fusing seal line) faces the inclined surface side at a position approximately ½ in the thickness direction.

Tension roller 3 provided below
7 is always held in the downward tilting position shown in FIG. 3 and rises when the strip-shaped film F is pulled out and wound around the sandwich 11 (position indicated by the chain double-dashed line in FIG. 3), and the strip-shaped film F is cut by the seal. After that, the air cylinder 41 is forcibly lowered to a fixed position below. Further, the tension roller 34 provided above is always held at the origin position which is inclined downward as shown in FIG. 3, and rises when the strip-shaped film F is pulled out and wound around the sandwich 11 (see FIG. (Dashed line position). Further, the tension roller 34 has a support mechanism that includes an origin sensor 42 for detecting the origin position of the roller 34.
Are arranged. After the seal of the strip-shaped film F is cut, the tension roller 37 is forcibly lowered by the air cylinder 41 and the strip-shaped film F is wound up by a predetermined amount by the winding roller 36, and the feeding roller 32 is rotated. The feeding roller 32 is stopped when the origin sensor 42 detects that the tension roller 34 is lowered from the raised position to the origin position by pulling out the strip-shaped film F from the film roll 30. As a result, the strip-shaped film F for the next packaging is stretched and held between the upper and lower tension rollers 34, 37.

As shown in FIG. 1, guide rods 23 along the transport direction are provided at positions upstream of the stretched portion of the band-shaped film F and sandwiching the supply conveyor 14 of the machine frame 12. In the figure, two cylinders 24 oriented to two piston rods 24a, 24a are slidably disposed outwardly (in a direction away from the supply conveyor 14) intersecting the transport direction. Connected to each cylinder 24 is a rod 25 linked to a cam (not shown) that is driven to rotate by a driving unit such as a motor.
The cylinder 24 is configured to reciprocate along the guide rod 23 via. In addition, the cylinder 24,
You may make it reciprocate 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. 1 and FIG. 4, the pushing plate 27 moves from the downstream side to the upstream side in the conveying direction of the sandwich 11 .
And a first film engaging portion 27b bent and formed at a downstream end of the pushing portion 27a in a direction orthogonal to the feeding direction.
The second film engaging portion 2 bent and formed in parallel with the first film engaging portion 27b at the upstream end of the pushing portion 27a.
7c, and is arranged on the bracket 26 via the second film engaging portion 27c. Then, the sandwich 11 conveyed by the conveyor belt 18
Is a light emitting element 1 arranged at an appropriate position on the supply conveyor 14.
Both cylinders 2 are timed to the timing detected by the detection means 120 composed of 20a and the light receiving element 120b.
By pushing the piston rods 24 and 24a in the direction in which the piston rods 24a and 24a are pulled in, the opposing pushing plates 2
The pushing portions 27a, 27a of the reference numerals 7, 27 are arranged so as to come close to each other toward the conveyance center of the sandwich 11 and come into contact with the corresponding inclined surfaces of the sandwich 11 (see FIG. 4).
Next, the cylinders 24, 24 are moved toward the downstream side along the guide rods 23, 23 at the same speed in synchronism with the intermittent running of the transport belt 18, and the sandwich 11 is transported as shown in FIGS. Belt 18 and pushing plate 2
7 and 27, the strip-shaped film F is configured to be supplied from the surface side facing the top toward the expanded portion.

As shown in FIGS. 4 and 5, the first film engaging portion 27b includes the pushing portion 27a and the sandwich portion 11a.
It is set so as to slightly project to the downstream side from the front end surface in the supply direction of the sandwich 11 in the state of being in contact with the inclined surface. As a result, the sandwich 11 is formed into a strip film F.
The first film engaging portion 27b comes into contact with the film F before the front end of the sandwich 11 and can be pulled out of the front end of the sandwich 11, and the front end of the sandwich 11 due to the drawing resistance of the strip film F. It is designed to prevent deformation. Further, as shown in FIG. 4, the second film engaging portion 27c is positioned so as to face substantially the same position as the rear end portion (top portion) of the sandwich 11 in the supply direction. Moreover, the upper and lower ends of the pushing plate 27 where at least the first film engaging portion 27b and the second film engaging portion 27c are located are set to be substantially at the same level as the upper and lower ends of the sandwich 11 in the height direction. The first film engaging portion 27b and the second film engaging portion 27c
This prevents the front and rear end portions of the sandwich 11 from being crushed by the film F when seal-cutting the band-shaped film F wrapped around the sandwich 11,
The seal cutting portion cut by the second film engaging portion 27c is prevented from being displaced vertically in the width direction of the film F, and the seal cutting portion is formed in a horizontal state ( (See FIG. 7).

Since the sandwich 11 is manufactured by hand, the outer dimensions of the sandwich 11 are not uniform. In particular, the thickness (the height on the conveyor) depends on the kind of the contents sandwiched between the breads and the sandwiched state. 1) is lacking in uniformity, and for example, when the standard thickness dimension is 6 cm, even a thickness of about 15% of the thickness dimension may be included. Further, since the bread has a resilience to a slight deformation as a characteristic of the bread, even if the sandwich 11 is pressed and deformed by the film F at the time of cutting the seal of the film F wrapped around the body, it is not Fusing Shear 4
The sandwich 11 deformed by the surplus portion P of the film F, which has been generated between the contact portion 3 and 44 (to be described later), returns to the original position, so that the sandwich 11 can be cylindrically wound without lowering its commercial value. The film F is satisfactorily packaged in close contact with the film F.

In the embodiment, the film engaging portions 27b, 27 corresponding to the outer dimensions of the sandwich 11 described above.
With respect to the arrangement position of c, the optimum positional relationship has been described. However, regarding the setting position of the film engaging portions 27b and 27c with respect to the outer dimensions of the sandwich 11, in consideration of the properties of the sandwich 11, the sandwich 11 In a series of processes in which the sandwich 11 is squeezed after being wound around the film F, the front end and the rear of the sandwich 11 are provided within a range where the sandwich 11 is not crushed and the commercial value is not reduced. The position may be set appropriately so as to face the vicinity of the end.

As shown in FIG. 3, a pair of upper and lower fusing sealers 43 and 44 which are heated by an appropriate built-in heater are disposed on the downstream side of the extending portion of the band-shaped film F so as to be vertically movable. . Then, after the sandwich 11 conveyed by the supply conveyor 14 and the pushing plates 27, 27 to a position beyond the film expanding portion is grasped by the grasping member 53 of the transfer conveyor 46 described later,
When the sealers 43 and 44 are close to each other, the strip-shaped film F is configured to be cut at the upstream side in the supply direction of the sandwich 11 at a position approximately ½ in the thickness direction of the sandwich 11. In addition, each sealer 43, 4
Guides 4 on both sides in the transport direction of sandwich 11 sandwiching 4
5 and 45 are provided so that the film F is sandwiched between the vertically opposed guides 45 and 45 when the seals are cut by the sealers 43 and 44. In addition, guide rollers 121, 121 are disposed at substantially the same height as the upper and lower ends in the thickness direction of the sandwich 11, between the spread portion of the strip film F and the positions of the fusing sealers 43, 44, The belt-like film F drawn by the sandwich 11 conveyed by the conveyor 14 and the pushing plates 27, 27 is guided downstream without contacting the sealers 43, 44.

As shown in FIGS. 1 and 2, 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 has a pair of endless chains 52, 52 arranged so as to be movable in the conveying direction of the sandwich 11, and a plurality of gripping members 53 provided at predetermined intervals in the traveling direction. As shown in FIG. 5, the gripping member 53 has a protrusion 54b protruding from the bottom surface of the horizontal portion 54a of the L-shaped fixing plate 54.
It is fixed to the endless chains 52, 52 via a movable plate 55, which is arranged on the fixed plate 54 so as to be able to approach and separate in a posture parallel to a vertical portion 54c which rises vertically from the horizontal portion 54a. It That is, the protrusion 54
A rod 56 is slidably inserted in b, and a movable plate 55 is arranged at one end of the rod 56 via a projecting piece 55a. Further, a regulating member 57 is arranged near the other end of the rod 56, and a compression spring 58 is elastically interposed between the regulating member 57 and the protrusion 54b, so that the movable plate 55 is always provided with the vertical portion 54c. It is designed to urge in the direction close to. Then, by moving the movable plate 55 of the gripping member 53 facing the receiving position of the sandwich 11 supplied from the supply conveyor 14 from the vertical portion 54c by an opening mechanism (not shown) (see FIG. 5), the film F is wound around the body. Sandwich 11 with both members 54c, 55
Configured to accept in between. And sandwich 1
After receiving 1, the movable plate 55 approaches the vertical portion 54c and elastically grips the sandwich 11 by releasing the action of the opening mechanism (see FIG. 7). In FIG. 1, reference numeral 59 is the sandwich 1 supplied by the pushing plates 27, 27.
1 shows a guide bed for guiding 1 to the gripping member 53 in a horizontal state, and this guide bed 59 is formed with a triangular recess 59a that allows the gripping member 53 to pass therethrough.

The transfer conveyor 46 is intermittently driven at a required timing after the sealing of the band-shaped film F by the fusing sealers 43 and 44, so that the sandwich 11 held by the holding member 53 is intermittently conveyed to the downstream side. It is configured.

[0021]

Operation of the Embodiment Next, the operation of the feeding 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
7, 27 move close to each other, and as shown in FIG. 4, the pushing portions 27a, 27a are brought into contact with both inclined surfaces of the sandwich 11. Even if the sandwich 11 is misaligned during conveyance by the conveyance belt 18, the pair of pushing plates 27, 27 approach each other toward the conveyance center. Are straightened and supported from both sides at the transport center. Then, in synchronization with the intermittent movement of the supply conveyor 14, both cylinders 24, 24 move downstream along the guide rods 23, 23 at the same speed, so that the sandwich 11 is supplied toward the stretched portion of the strip film F. To be done. At this time, since the sandwich 11 faces the transport center, the sandwich 11 is accurately supplied to the center position in the width direction of the strip-shaped film F in the stretched portion.

On the stretched belt-shaped film F,
The first film engaging portion 27 of the pushing plates 27, 27
b and 27b first come into contact with each other and the strip-shaped film F is pushed to the downstream side as the plates 27 and 27 move, whereby the upper and lower tension rollers 34 and 37 move upward and the film F is pulled out. It As a result, the strip-shaped film F is wound around the front end surface and the upper and lower surfaces of the sandwich 11 in the supply direction. Then, as shown in FIG. 6 and FIG. 7, the sandwich 1 is provided between the movable plate 55 and the vertical portion 54c of the gripping member 53 waiting at the receiving position.
When 1 arrives and stops intermittently, the opening mechanism operates and the movable plate 55 moves to the vertical portion 54c side under the elastic force of the compression spring 58, and elastically grips the sandwich 11 from the vertical 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, the sandwich 11 is wrapped around the film F having the fusing seal line (sealing portion) formed at the substantially central portion in the thickness direction on the inclined surface side. The pushing plates 27, 27 are held in a state of supporting the sandwich 11 from both sides until the seal cutting of the film F by the fusing sealers 43, 44 is completed, and at appropriate timings when the sealers 43, 44 are separated from each other. The cylinders 24, 24 are biased in the reverse direction, and the pushing plates 27, 27 are separated from each other. Then, both cylinders 24, 24 retreat (move to the upstream side) along the guide rods 23, 23, return to the initial standby position, and wait for the arrival of the next sandwich 11.

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 by the film F having only one seal portion on the inclined surface side of the sandwich 11. 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 sandwich 11 on which the film F is wound by the above-described process is intermittently driven by the transfer conveyor 46 at a required timing after the sealing of the band-shaped film F is cut by the fusing sealers 43 and 44, so that the holding member 53 The gripped state is supplied to the subsequent process.

In the embodiment, the plate integrally includes the pushing means for pushing the sandwich, the first film engaging means for pulling out the film and the second film engaging means for supporting the rear end portion of the sandwich in the feeding direction. Although the case of being configured has been described, the present application is not limited to this, and may be configured in a block shape or each means by a separate member. Further, the object to be packaged is not limited to a triangular sandwich, and can be suitably used for supplying an object to be packaged in a rectangular shape and having a flexible property. Further, in the embodiment, a case has been described in which the pair of fusing sealers are brought into contact with each other substantially at the center in the thickness direction of the sandwich, but instead of the fusing sealer, a welding sealer and a cutter may be separately provided. Further, a method of setting the contacting point of these seal cutters near the lower end of the sandwich can also be adopted. In this case, the second film engaging means that supports the film when the film is cut by sealing may be set at a position facing at least the upper end of the rear end of the sandwich.

[0028]

As described above, according to the flexible object-to-package-feeding device of the present invention, the means for pushing the object to be packaged is
Since the package is always close to the center of the transport path from both sides sandwiching the transport path of the package, the package is always supplied to the center of the stretched film in the width direction while facing the center of the transport path. You can Further, since the strip-shaped film is pulled out by the first film engaging means, it is possible to prevent the front end portion of the flexible packaged article in the feeding direction from being deformed when the film is pulled out. Further, even when the film wound around the package is sealed, the first film engaging means and the second film engaging means allow the film to be on the upper and lower surfaces near the front end of the package and at least the upper surface near the rear end. Since it is supported on the side, the packaged article is not crushed by the film, and the body-wrapping can be performed without losing its shape.

[Brief description of the drawings]

FIG. 1 is a plan view of a main part of a supply device according to an embodiment.

FIG. 2 is a vertical sectional side view of a main part of the supply device according to the embodiment.

FIG. 3 is a schematic side view of an essential part showing a supply device according to an embodiment together with a supply mechanism for a strip-shaped film.

FIG. 4 is an explanatory plan view showing a process of winding a band-shaped film around a sandwich, and showing a state in which the sandwich is sandwiched by a pushing plate.

5 is an explanatory side view showing the state of FIG. 4 with one of the pushing plates removed. FIG.

FIG. 6 is a schematic plan view showing a process of winding a band-shaped film around a sandwich, and showing a state in which the sandwich is supplied to a holding member by a pushing plate.

FIG. 7 is an explanatory side view showing one of the pushing plates in the state of FIG.

[Explanation of symbols]

 11 Sandwich (Item to be Wrapped) 14 Supply Conveyor (Conveying Path) 27a Pushing Section (Pushing Means) 27b First Film Engaging Section (First Film Engaging Means) 27c Second Film Engaging Section (Second Film Engaging Means) ) 30 film roll (source) F band-shaped film

Claims (2)

(57) [Claims] 1. A flexible film to be packaged is provided on the downstream side thereof with a film drawn from a supply source in a vertical direction intersecting the transport path, and the film to be packaged is supplied toward the film. A wrapping machine that winds the film drawn from the supply source over the upper and lower surfaces of the packaged object, and seals the film at the rear side in the supply direction of the packaged object, on both sides of the conveyance path of the packaged object. A pair of pushing means which are disposed so as to be movable toward and away from each other toward the center of the conveying path, and which push the packaged object toward the film when being moved forward along the conveying path; Provided on the front side in the supply direction of the article to be packaged in the means, when the pushing means is moved toward the center of the transport path,
A first film that faces the upper and lower ends in the height direction in the vicinity of the front end in the supply direction of the object to be packaged, within a required range, and draws the film from the supply source as the pushing means moves forward along the conveying direction. Engaging means, provided on the rear side in the feeding direction of the article to be packaged in each of the pushing means, when the pushing means is moved toward the center of the transport path,
A second film engaging means facing a required range with respect to at least an upper end in a height direction in the vicinity of a rear end portion in the supply direction of the article to be packaged, and the second film engaging means is drawn from the supply source by the first film engaging means. When the film wound over the upper and lower surfaces of the package is sealed at the rear side in the supply direction of the package, the film facing the upper and lower sides of the front end of the package is first film engaging means. And a film which faces at least the upper surface side of the rear end portion is supported by the second film engaging means. 2. A supply source is provided on the downstream side of the transport path of the packaged object.
The film pulled out from it is stretched in the vertical direction intersecting the transport path.
And supply the items to be packaged toward this film.
The film drawn from the supply source above and below the package.
Wrap the film over the surface and supply the film to the package.
In a packaging machine that seals on the rear side in the feeding direction, Toward the center of the transport path on both sides of the transport path of the packaged object
They are arranged so that they can move close to and away from each other, and
In the center of the transport path from upstream to upstream Close
So that it has a planar triangular shape by its proximity movement
Pushing a flexible package to abut along corresponding slopes
And includes the encapsulation as it is moved forward along the transport path.
Orientation with one of its tops directed upstream and the
The downstream side facing the top is paired in parallel with the film.
A pair of pushers that pushes toward the film in the facing position
Means, Provided on the front side in the feeding direction of the articles to be packed in each of the pushing means
When the pushing means is moved toward the center of the conveying path,
Up and down in the height direction near the front end of the package to be fed
It faces the edge within the required range and the pushing means moves along the transport direction.
The film from the source as it moves forward
First film engaging means for drawing out, Provided on the rear side in the feeding direction of the articles to be packed in each of the pushing means
When the pushing means is moved toward the center of the conveying path,
There is a small amount of height
Second film engagement that faces the required range with respect to at least the upper end
And means, Pulled out from the supply source by the first film engagement means
Film wrapped around the top and bottom of the package
When sealing the back side of the package in the feeding direction,
The film facing the upper and lower surfaces of the front end of the bout
At least at the rear end while being supported by the film engaging means.
The film facing the upper surface side is supported by the second film engaging means.
A flexible package that is configured to be held
Supply device.