JPH01226507A - Packaging apparatus - Google Patents

Abstract

PURPOSE:To permit an article to be easily packaged, by providing a packaging device adapted for three-sides sealing with an opening device for opening the upper part of a two-fold belt-shaped film and a receiving stand for supportably guiding an article received in said film. CONSTITUTION:After a two-fold belt-shaped film 2A passes through a pair of feed rollers 13, the folded parts 2B thereof are guided along the outer surfaces of a pair of opening guide plates 17 of an opening device 16 oppositely positioned at a predetermined space, whereby an opening 18 is automatically formed at the upper part of the two-fold belt-shaped film 2A as the film travels. A receiving stand 37 is provided under this film 2A along the film traveling passage, whereby an article 19 received in the film 2A through the opening 18 is placed and slidably moved on the receiving stand 37 as the film travels. Heat sealed parts S, F and R are formed at the three sides of the film to form a bag in a series of sealing processes.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention is directed to a packaging apparatus for wrapping packages in heat-sealable films.

[Prior art] Conventionally, in order to package a package, the method described in Japanese Utility Model Publication No. 58-45204
As proposed in the above publication, a bag made of a heat-sealable film is suspended and supported horizontally, and in this state, the package is accommodated through an opening on one side of the bag, and then the opening is sealed with a heat seal. I was trying to keep up with the situation.

[Problems to be Solved by the Invention] In the above-mentioned conventional technology, since pre-made bags are used, commercially available bags must be purchased.
-1-1 The bag must be suspended and supported, and the frontage must be opened using a suction member etc. to accommodate the package, which requires a complicated device for the bag opening process. He was good at the problem.

Therefore, using a bi-folding machine proposed in Japanese Utility Model Publication No. 52-22525, etc., the strip film is continuously pulled out and folded in half using a bi-folding mechanism, and then the package is stored and One possibility is to form a bag and seal it.

However, it is difficult to accommodate a package in a bi-folded strip film and to transport the package inside the film in a stable state.

SUMMARY OF THE INVENTION An object of the present invention is to provide a packaging device that can easily store packages in a bifold strip-shaped film and transport the packages in a stable state.

[Means for Solving the Problems] The present invention involves folding both ends of the bi-folded film strip in half using a bi-folding device while continuously pulling out a strip-shaped film that can be sealed forward, and folding both ends of the bi-folded strip-like film upward. In the packaging device, the packaging device is configured to guide a drawer toward the bifold film, house the package within the bifold strip film, and seal the package on three sides using sealing devices on three sides. This packaging device is equipped with a frontage device that guides the left and right films of the advancing bi-folded strip film to the left and right sides to open the upper part of the bi-folded strip film.

In addition, the present invention involves continuously pulling out a heat-sealable strip-shaped film forward, folding both ends of the strip-shaped film into two using a bifolding device, and pulling out and guiding both ends of the bi-folded strip-shaped film upward. In a packaging device in which a package is housed in a bi-folded strip film and sealed on three sides by sealing devices on three sides, a bi-folded strip film is provided below the bi-folded strip film along the film travel path, and This packaging device includes a pedestal that supports, guides, and covers a package housed in a strip-shaped film.

[Function] According to the second paper formation, while the bifold strip film folded in half by the bifold ia+ is progressing, the left and right sides of the bifold strip film are guided to both sides by the opening device as the film advances. An opening is formed for accommodating the package. Furthermore, with the above configuration, the package housed in the bifold strip film is stably transported while being placed on the pedestal as the film advances.

[Example] Embodiments of the present invention will be described below with reference to the accompanying drawings.

1 to 8, reference numeral 43 denotes a machine base, and at the upper rear end of this machine base 1, a roll 3 of a tape-sealable strip film 2 made of transparent polyethylene, vinyl, etc. is mounted on a support plate 4. It is rotatably installed through the. Reference numeral 5 denotes a device for folding the strip film 2 in half, which is provided in front of the roll 3, and this device folds the folding member 6, which has a triangular planar shape, in a downward direction as it moves forward through the support plate 4△. It is mounted in a tilted position. This bending member 6 has tapered surfaces 7 on both sides that slope inward as it moves upward.
A sharpened portion 8 having a V-shaped side surface is formed at the front end. Further, the rear end side of the bending member 6 is supported in a height-adjustable manner through a long hole 9 and a fixing member 10 that can be vertically tightened.
In addition, the front upper surface is pivotally connected by a swingable link arm 12 via a pivot support 11, and the inclination angle of the bending member 6 can be selected by adjusting the angle on the rear end side. It is configured such that the vertical positional relationship of the folded strip film 2A can be set arbitrarily. Further, a pair of left and right feed rollers 13 made of a hard elastic material are provided in contact with the front end of the bending member 6. Then, the strip-shaped film 2 continuously pulled out from the roll 3 is guided to the bifolding device [5] via a plurality of guide rolls 14 and tension rolls 15, and folded into two along both side tapered surfaces 7 of the folding member 6. The two-folded strip film 2A thus bent is guided to the next step by the rotation of the feed roller 13.

Reference numeral 16 denotes an opening device provided in front of the bifolding device 5, which is composed of same-day guide plates 11 having a cross-sectional shape of an L-shape and arranged in parallel on the left and right at a predetermined distance r1. Then, the films 2B on both sides of the bifold strip film 2A guided by the feed roller 13 are #
By being fed along the outer surface of the closing guide plate 17, an opening 18 is formed at the interval between the left and right opening guide plates 17. In this open state, a package 19 made of, for example, enoki mushrooms is manually inserted into the bi-folded strip film 2A from the opening 18.

20 is the opening! 116 is an upper sealing device installed horizontally in front of the support member 2 above the machine base 1.
An upper plate 22 is mounted horizontally through the upper plate 1, and a pair of heat sealing members 23 and 23A having a predetermined length corresponding to the product are provided on the lower surface of the upper plate 22. In this case, one beat sealing member 23 is fixed to the upper plate 22, and the other heat sealing member 23A is provided so as to be movable forward and backward relative to the heat sealing member 23 by a cylinder 24. Further, the heat sealing member 23.23Δ is integrally provided with a pair of pinching members 25.25A, and a flea guide rod 26 is provided on the heat sealing member 23A. A coil spring 21 is wound around. In addition, the heat seal member 23A has an abutment plate 28.
is provided via a plate spring 29. Then, the cylinder 24 operates in a state where the upper edge of the portion of the bi-folded strip film 2A where the package 19 is housed is located between the heat sealing members 23° and 23A, whereby the heat sealing member 23A causes the coil spring 27 to It moves forward while being compressed and is elastically pressed against the heat sealing member 23, and the upper edge of the bi-folded strip film 2A becomes unpaired and the pressing member 25
．． 25A, and heat-sealed while being elastically clamped. In this case, the contact plate 28 contacts the heat sealing member 23 side, and the leaf spring 29 is compressed. For this reason,
As the heat sealing member 23A retreats, the abutment plate 28 is restored to its original state and moves forward, so that the film 2A is instantly separated from the film 1 to the sealing member 23A.

Reference numerals 30 and 31 designate a pair of feeding rollers made of an elastic material, which are provided at the front and rear ends of the lower surface of the upper plate 22, respectively, and are used to push the bi-folded strip film 2A pulled out from the roll 3 and folded in half in a linear direction while pinching it. I am trying to send it to.

The feed roller 13 and the feed roller 30 are connected to a motor 32 through a chain 33 and a sprocket 34 and driven, and the feed roller 31 is connected to the feed roller 30 through a belt 35 and a pulley 3G and driven, and each is synchronized. It rotates in the state.

37 is a receptacle whose cross-sectional shape is approximately (7), which is disposed on the upper part of the machine base 1, passing through the opening a position 16 and the upper sealing device 20, and extending along the film advancing path to the front end position of the upper plate 22. The package 19, which is a stand and is housed in the bi-folded strip film 2A, slides on the holder 37 as the film advances.

Reference numeral 38 denotes a sealing and cutting device provided in front of the straight edge of the pedestal 31 and the upper plate 22. This is achieved by installing a receiving plate 39 upright on the left and right ends of the pedestal in a direction perpendicular to the film advancing direction. , cylinders 40 and 41 are installed horizontally inside each receiving plate 39, and guide rails 42 are installed on the front and back sides of the upper part and the front side of the lower part between the left and right receiving plates 39, respectively.'1 6rj - A pair of movable bodies 43 and 44 are movably provided on the trail 42.

A cutter 4G is attached to the center of one of the movable bodies 43 via a rail portion 45 so that it can be advanced, and a peel 1 is provided on the rear side of the inner surface of the movable body 43 for sealing the traveling direction side of the strip film 2A. - The sealing part 41 is m+), the entrance/exit part 4B of the ivy 46 is provided in the center part of the moving body 43, and the front side of the moving body 43 is provided with a 4
Two heat seal points are installed on each side.
It is being Further, a pair of upper and lower guide rods 50 are protruded from the outer surface of the cutter 46, and a coil spring 51 is wound around the guide rods 50 on this side, and the upper and lower ends of the pushing body 52 face toward the IFI six cylinder 40. The pusher body 52 is slidably fitted into the guide rod 50, and the pusher body 52 is pulled out by a locking member 53 fixed to the end of the guide rod 50.

In addition, a contact plate 5 is connected to the front surface of the movable body 43 via a plate spring 54.
5 is designated as the installation number, and a cooling water circulation path 5G is formed, and chilled water is supplied to this circulation path 56 (from the unsupplied water vibrator 57 to 1 in the figure) by a boss not shown in the figure.
After being circulated inside, it is discharged from a drainage pipe 158.

Also, the other moving body 44 that is paired with the one moving body 43
is attached to the cylinder 41, and a heat seal portion 4 facing the P1 seal portion 47 is provided on the rear side of the inner surface thereof.
7 Atfi is provided, and the insertion groove 5 of the cutter 46 is provided in the center part.
9 is provided, and a P1 seal portion 49Δ facing the same seal portion 49 is provided on the front side, and the upper and lower guide rails 42 are provided with a P1 seal portion 49△ located between the movable bodies 43 and 44. A coil spring 60 having a weaker urging force than the coil spring 51 is wound.

Reference numeral 61 denotes a tensioning device for the bi-folded strip film 2A, which is provided with a support plate 4 at the front end of the machine 1, and a pair of guide rails 62 on the left between the support plate 4B and the upper plate 22.
is mounted along the film traveling direction, and a sliding VJ body 63 is slidably provided on this guide rail 62. Also, on the rear side of the first learning body 63, there is a pair of clamping members 6 that are opened and closed via a pivot portion 65△ by the operation of the cylinder 64.
5 is provided. Further, a cylinder 6G is provided on the upper plate 22 along the film traveling direction, and a movable element 67 is connected to the piston thereof, and this movable element 67 is slidably provided on the left side idle rail 62. . Further, one end of a wire 768 is fixed to the circular body 63, and the wire 68 is guided by a pulley G9 provided on the front pane of the machine base 1 and is suspended below the front end of the machine base 1. A balance weight 10 is provided.

Then, in a state where the front end of the bi-folded strip film 2A is sent by the feed rollers 13, 30, 31 to a position where it protrudes from the front end of the pedestal 37, the feeding of the film is stopped, and the screw 1 is turned by the operation of the cylinder 66. is shrinking,
As a result, the layer sacral body 63 on the right side of the clamping member 65 is
7 and moves toward the sealing and cutting device 38 side against the tensile force of the balance U1-1-70, and the pair of left and right clamping members 65 are opened and the bi-folded strip film 2A is Located on the left and right sides of the edge.

Here, the clamping member 65 is closed by the cylinder 64 to clamp the film 2Δ, and feeding of the film is started, and at the same time, the fluid in the cylinder 66 is widened so that I!
The ff1l1 body 63 is moved forward via the wire 68 by the tensile force of the balance wade door 0, and the film feeding is stopped when the packaging body 19 is at a predetermined position 4, that is, when the predetermined quality of the bi-folded strip film 2Δ is brought out. let In this way, the bi-folded strip film 2A is folded onto the balance way 1.
Operation of the sealing and cutting device 38 is performed under tension by pulling with a tensile force of -70. Then, when the heat-sealing points R and F of the drawn bi-folded film 2A are sealed and the film is cut, the bag 2C separated from the bi-folded strip film 2△ is caused by the tensile force of the balance wade door 0. As the layer moving body 63 moves, it moves further forward.

In this case, a conveyance device 71 is provided below the packaged bag 2C, and the packaged bag 2C is placed on this conveyance device 11. This conveying device 11 is provided on an endless conveyor 12 that circulates in a direction perpendicular to the film traveling direction.
This conveyor 72 has a front and rear pair of endless chain belts 76 between a sprocket 14 driven by a motor 73 and a sprocket 75 on the driven side.
is attached, and the sealed bag 2C is placed on this saucer 77.
Gai! It is configured so that it can be placed and transported.

Next, the operation of this embodiment having the above configuration will be explained.

First, the strip-shaped film 2 is pulled out from the old roll, passed through the guide roll 14 and the tension roll 15, and then folded into two from the rear surface of the folding member 6 along the tapered surfaces 7 on both sides. Then, it was guided between the inner and outer surfaces of the pair of left and right opening guide plates 17 on the pedestal 37, and then sandwiched between the feed rollers 30, and further passed through the upper sealing device 20 and sandwiched between the feed rollers 31. Set to state.

Here, when the device is driven, the motor 32 detects the colored portions printed on the film at equal intervals using a sensor (not shown), and then feeds the bi-folded strip film 2A into one bag 2C by the feed rollers 13, 30, 31. The motor 13 is driven intermittently at a feeding pitch of a length corresponding to the length dimension of the film transport path, and the motor 13 is moved to the tray [77] on the film transport path, and the next tray 77 is the tensioning device! ! It is configured to be driven intermittently by detection by a limit switch (not shown) at a feed pitch that moves the robot to a position corresponding to the movement path of the robot 61.

Then, by the rotation of the feed roller 13.30.31,
The strip film 2 is intermittently pulled out by a predetermined length from the roll 3 and folded in half by the folding member 6, and the bifold strip film 2A is passed through a pair of left and right opening guide plates 17 between the feed roller 13 and the feed roller 30. An opening 18 is formed at the top along the line and stops. In this state, a package 19 of enoki mushrooms or the like is manually inserted into the bi-folded strip film 2A through the opening 18 in alignment with a mark (not shown) marked on the pedestal 37.

Next, the bi-folded strip film 2A is transferred to the feed roller 13.3.
0.31, the package 19 moves intermittently to the pedestal 3.
The advance of the film stops in a state corresponding to the upper sealing device 20 which is slid on the upper plate 22 and attached to the upper plate 22 in a V4 manner. Here, by operating the cylinder 24, the heat sealing member 23A and the clamping member 25A are moved to the coil spring 27.
The heat sealing member 23 and the pinching member 25
The edge of the bi-folded strip film 2AR at the top of the package 19 is sandwiched by the pinching member 25.25A and heat sealed by the heat sealing member 23°23A to form an upper heat sealing portion S. Ru. In this case, the contact plate 28 comes into contact with the pressing member 25 side, and the leaf spring 29 is compressed. Then, as the piston of the cylinder 24 contracts, the heat sealing member 23A and the clamping member 25A are turned back by the restoring force of the coil spring 27, and the abutting plate 28 is projected by the restoring force of the leaf spring 29, thereby sealing the film 2B with the heat sealing member 23A. to separate from

Next, by intermittent advancement of the film, the front end of the bi-folded strip film 2A, in which the package 19 is accommodated and the upper heat-sealed portion S is formed, is moved between the upper plate 22 and the feed row 53.
When reaching a state protruding from 1, film advancement stops.

Here, the cylinder 66 operates and the sliding body 63 moves along the idle rail 62 toward the sealing and cutting device i38 through the mover 67 while resisting the load of the balance wade door 0. Sandwiching member 6
5 is closed and pinches the front end of the bi-folded strip film 2A.

Next, film advancement is started, and the fluid in the cylinder 6G is drained, and the front end of the bifold strip film 2A is held between the clamping members 65 and moved through the wire 68 and the calendar rib 63 by the load of the balance wade door 0. being pulled forward. After that, when the film stops advancing, the pulled out bi-folded strip film 2A is held in a tensioned state by the tensile force of the balance way 1-10.

Next, when the cylinders 40 and 41 of the sealing and cutting device 38 operate, the pair of left and right moving bodies 43 and 44 are pushed toward the center along the guide rail 42 against the bias of the fill spring 60, and the packaging is completed. The bi-folded strip film 2Δ close to the rear end of the body 19 is vertically sandwiched and sealed. in this case,
When the front edge of the film 2△ to be pulled out and guided next is heat-sealed by the left and right pair of heat sealing parts 47.47A, the rear edge sealing area R on the front side of this front edge sealing area F is carefully sealed. is sealed by a pair of heat seal parts 49.49A, and the coil spring 51 is further sealed.
By pushing the cutter 46 against the bias of
Front end of Δ: Film 2 between the edge seal location F and the trailing edge seal location R of the strip-shaped film 2Δ pulled out and guided.
A is cut, and the cutter 4G is inserted into the insertion groove 59. Further, the contact plate 55 contacts the heat seal portion 47A side while compressing the leaf spring 54. As the pistons of the cylinders 40 and 41 contract, the left and right moving bodies 43 and 44 and the cutter 46 return to their original positions due to the restoring force of the coil springs 51 and 60, and the contact plate 55 returns to its original position due to the restoring force of the leaf spring 54. The film 2Δ is flj removed from the P1-seal portion 49. As the film 2Δ is cut, the bag 2C containing the package 19, which is sealed with three sides and sealed, is further clamped by the clamping members 65 under the tensile load of the balance way 1-70. , the clamping member 65 is opened at the same time as the tray 77 is transferred to a predetermined position, that is, a position where it is placed on the soil.

Next, when the film has stopped advancing, the motor 73
The conveyor 72 is driven and the package 19 is
The tray 77 on which the bag 2C containing the bag 2C is placed moves, and the next tray 77 is transferred to a position corresponding to the movement path of the tensioning device 61 and stopped. The product in the bag 2C packaged in this state is transferred to the receiver 11117 as the second conveyor 72 is driven.
7 is automatically ejected when turning downward.

In this way, in the above embodiment, the strip film 2 pulled out by the rotation of the roll 3hs+filtration roller 13, 30, 31 is folded into two tapers on both sides of the rear surface of the triangular bending member 6 of the Jfi device 5. The bi-folded strip film 2A is initially formed into two folds as it advances along the surface 7, and after passing between a pair of feed rollers 13, it is folded into two folds. The left and right films 2B of the folded strip film 2A are guided along the outer surfaces of a pair of left and right opening guide plates 17 that face each other at a predetermined interval and form the frontage υ6, so that the folded strip film 2B automatically moves as the film advances. An opening 18 is formed at the top of 2A. Therefore, the package 19 can be easily accommodated with a simple configuration without the need for a conventional device for sucking and opening the film with a suction member in a suspended and supported state of the bag.

Further, since a pedestal 37 is provided at the bottom of the bi-folded strip film 2A along the film travel path, the package 19 accommodated in the film 2A from the opening 18 is placed on the pedestal 37. In addition, as the film progresses, the package 19 is transferred while sliding on the pedestal 37, thereby preventing deformation of the package 19 and sagging of the bifold strip film 2A during transfer. stable operation is possible.

Further, in the above embodiment, the strip film 2 pulled out from the roll 3 is automatically folded in half, and the package 19 is housed in the folded strip film 2A.
-wN bag by forming sealing points S, F, R;
Sealing can be performed in a series of steps, and as a result there is no need to purchase commercially available bags, costs can be reduced, and the packaging body 19 can be housed and heat-sealed easily. It can be done. Further, the sealing device for the front edge sealing location F and the sealing device for the trailing edge sealing location R may be provided separately, and the cutting and heat sealing of the film 2A may be performed simultaneously, or either cutting or heat sealing may be performed first. This may be selected arbitrarily.

Note that the present invention is not limited to the above-mentioned embodiments, and various modifications can be made within the scope of the gist of the present invention. For example, the type of packaging body and the material of the film may be selected as appropriate, and it is particularly effective for packaging foodstuffs. Furthermore, the bifolding device can be applied to various types such as those disclosed in Japanese Utility Model Publication No. 52-22525. Furthermore, various types of sealing devices may be selected as appropriate for the three side sealing devices. Further, the opening guide plate of the opening device may be bent in a dogleg shape, or the two may be connected by a connecting member. Further, the pedestal may be in the form of a flat plate.

[Effects of the Invention] The present invention provides an opening device between the bi-folding device and the sealing device that guides the opening as the film progresses, and a cradle that supports and guides the package housed in the bi-folded strip film. By providing this, it is possible to provide a packaging device that can easily accommodate a package in a bi-folded strip film and can transport the package in a stable state.

[Brief explanation of the drawing]

1 to 8 show embodiments of the present invention, and the first s(A
) to (E) are schematic explanatory diagrams showing the packaging process, FIG. 2 is an overall vertical sectional view, FIG. 3 is an overall plan view, FIG. 4 is a perspective view showing the folding device and opening device, and the fifth factor is the upper part. FIG. 6 is a perspective view of the sealing device, FIG. 6 is a perspective view of the sealing and cutting device, FIG. 7 is a cross-sectional view of the sealing and cutting device, and FIG. 8 is a perspective view of the tensioning device. 2... Band-shaped film 2A... Bi-folded strip-shaped film 2C... Bag 5... Bi-folding device 16... Inquiry opening β 17... Opening guide plate 19... Packaging body 37...・Case 20, 38...Sealing device

Claims (2)

[Claims] (1) While continuously pulling out the heat-sealable strip-shaped film forward, both ends of the strip-shaped film are folded in half by a bifolding device, and both ends of the bi-folded strip-shaped film are pulled out and guided upward, and the two-folding device is used to fold the strip-shaped film in two. In a packaging device in which a package is housed in a strip film and sealed on three sides by sealing devices on three sides, the left and right sides of the bifold strip film that is provided between the bifold device and the sealing device, A packaging device equipped with an opening device that guides the film to both left and right sides and opens the top of the bifold strip film. (2) While continuously pulling out the heat-sealable strip-shaped film forward, both ends of the strip-shaped film are folded in half by a bifolding device, and both ends of the bi-folded strip-shaped film are pulled out and guided upward, and the two-folded film is folded in half. In a packaging device in which a package is housed in a strip-shaped film and sealed on three sides by a sealing device on three sides, a package is provided along the film travel path at the bottom of the bi-folded strip-shaped film and housed in the bi-folded strip-shaped film. A packaging device comprising a pedestal that supports and guides a wrapped package.