JP2739924B2 - Film packing machine with occlusal fastener - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an upper and lower film having a male bite having a convex cross-section and a female bite having a concave cross-section respectively along the left and right side edges in the longitudinal direction. The present invention relates to an automatic wrapping machine that sequentially inserts articles to be wrapped between upper and lower films and automatically wraps them while continuously supplying the wrapped state.

[0002]

2. Description of the Related Art In recent years, a film with a synthetic resin occlusal fastener, which is provided with a male bite having a convex cross section and a female bite having a concave cross section in an opening portion, and which can be used by fitting and disengaging male and female bite,
It is used for various packaging such as foods, daily necessities and pharmaceuticals. This is because the package can be opened and sealed arbitrarily.

In a general automatic wrapping machine, an article to be packaged is supplied between a strip-shaped upper and lower film that runs intermittently and continuously, and then the opening of the peripheral part of the article to be packaged is melted and cut at the same time as a predetermined amount. Sealed packaging is performed. And the upper and lower films are roughly divided into two types, that is, they are supplied independently, or are supplied by being folded in two in the longitudinal direction. A film roll obtained by winding is installed.

[0004] In the case of packaging with the above-mentioned film with an occlusal fastener, the film is sent out from the film roll in the same manner as in the case of ordinary film packaging, but the above-mentioned occlusal element is provided along the longitudinal edge of the film. Therefore, at the time of producing a film roll, the bite is traversed in the roll axis direction to obtain a uniform roll surface. Therefore, when the film with the occlusal fastener is fed out from the film roll, the film surface is swung right and left, and various troubles occur in the next packaging process.

Therefore, conventionally, for example, Japanese Patent Laid-Open Publication No.
As disclosed in Japanese Unexamined Patent Publication, the upper and lower films and the male and female bites are individually supplied, and the male and female bites are welded along one opposing side edge of the upper and lower films during the supply. At the same time, after inserting the article to be wrapped between the upper and lower films, and engaging the male and female bite, the predetermined position of the film is cut off with a vertical and horizontal sealer to avoid any trouble at the time of film supply. . However, according to this automatic wrapping machine, it is necessary to equip a welding device for welding the bite to the film, and the structure of the wrapping machine is inevitably increased in size and complicated.

In order to solve such a problem, for example, Japanese Patent Publication No. 5-87381 discloses that a male and female bite is welded in advance by independent welding devices along the left and right side edges in the longitudinal direction of a wide band film. Then, a film is wound by winding the film while traversing the bite in the roll axis direction, and the film roll is dispensed while obstructing the vertical axis. A position detector that detects the position of the bite at the upper edge of the film is installed in the film feeding section. The detector detects the bite position of the film to be fed, and the film roll is moved according to the change in the bite position. Is raised and lowered to maintain the feeding reference position. This allows the film to be unwound from a fixed position from the wound film roll while being traversed in the roll axis direction.

Further, in the automatic wrapping machine disclosed in the publication, the center of the film is cut in a longitudinal direction by a cutter at a film feeding section, and then the film having a male bite and the film having a female bite are vertically moved. Separated and separated horizontally and sent out horizontally, insert the article to be packaged between the upper and lower films in the middle of the sending out, and after welding the male and female bite, weld seal the predetermined position with a heated sealer. Blow.

[0008]

However, even in a packaging machine using a film with an occlusal fastener disclosed in the above-mentioned Japanese Patent Publication No. 5-87381, a wide film roll is installed in the film feeding section and the same feeding is performed. After the film is cut in the longitudinal direction while folding the center of the same film that is fed out in the vertical plane at the part, it is separated vertically and run horizontally, so that not only the structure is still complex but also the installation space is large. Become. In addition, a position detector of the bite is installed in the film feeding portion to detect a change in the vertical position of the bite, and feedback control is performed. Therefore, a drive mechanism for that is increased, and the cost is increased. Control equipment is required.

A first object of the present invention is to solve such a conventional problem. The first object of the present invention is advantageous in terms of an installation space, and has an occlusion wound while being traversed in the roll axis direction. It is an object of the present invention to provide an automatic packaging machine using a film with an occlusal fastener which enables a film fed while being swung right and left from a film roll to be sent to a predetermined position by a simple mechanism.

[0010] A second object of the present invention is to provide an automatic wrapping machine using an occlusal zipper-equipped film, which enables insertion of an article to be wrapped with a reasonable mechanism into a supplied occlusal zipper-equipped film. Is to do.

[0011]

SUMMARY OF THE INVENTION It is an object of the present invention to traverse a film with a bite in which a male bite and a female bite, which are the main components of the present invention, are superposed in an occlusal state at an edge. A film roll obtained by winding while being wound, a film withdrawing means for unwinding the film from the film roll by controlled driving, and disposed between the film roll and the film withdrawing means, and are axially shaken from the film roll. Film traveling position regulating means having an articulation guide member for regulating the traveling position of the male and female articulators in an occlusal state at the edge portion of the film being fed out to a predetermined position; And is inserted between any of the left and right edge portions of the film supplied in a superposed state and has a predetermined gap. An opening device for separating and opening the polymerized film, a tip portion is inserted into the opening device, an article conveying means for sequentially feeding articles to be packaged into the polymerized film, and the article conveying means is installed subsequent to the article conveying means, A heating sealer for welding and fusing the polymerized film in place
The film traveling position regulating means has a film end inside.
It has a guide gap for guiding the edge and
It is formed in the bite running section, and the entrance has a large diameter and gradually goes downstream.
A funnel-shaped first passage having the next smaller diameter, and following the first passage
The present invention is achieved by an automatic packaging machine using a film with an occlusal fastener, characterized by having an occlusal portion passage having a second passage having the same diameter .

[0012] Preferably, before Symbol polymeric film becomes folded into two with the center of the strip of the wide film in the longitudinal direction with each咬合Ko the left and right edges, said opening device and the article transport means, said A cutting means is provided on the folding side of the two-fold film and cuts the folded edge of the film.

Further, the polymer film may be composed of two independent films, and in the present invention, the opening device and the article conveying means including the case of the two-fold film are provided on both sides of the polymer film. It may be installed at any edge.

[0014]

In the following, an example of continuous packaging by the automatic packaging machine of the present invention will be described. First, a film-folding means is driven to sequentially feed a two-fold film in a state in which male and female bites are engaged from a film roll. At the time of feeding the film, the film is swung right and left, but the occlusal portion is guided by a funnel-shaped occlusal portion guide passage while reaching the feed roll, passes through the film traveling position regulating device, and the film traveling path is a predetermined portion. After that, the film is caused to travel along a certain traveling path.

The film pulled out by the film pulling means and traveling at a predetermined position then passes through a film opening device. At the time of this passage, the folding side edge of the film is opened with a predetermined gap at the same time as the film is cut by the film cutting member of the film opening device,
From the opening, articles to be packaged are sequentially fed into the film by a conveying means such as a supply conveyor. According to a preferred example,
Since the film running path in the supply section of the packaged article is vertically downward, the packaged article thrown from the opening falls by its own weight, but the opening edge of the film that has passed through the film opening device is vertical. After being welded by the sealer, the cylindrical film is welded in the transverse direction by the previous horizontal sealer, so that its lower end is welded and sealed to form a bag, and is accommodated in the bag portion.

When the article to be packaged contained in the bag reaches a predetermined position below the horizontal sealer, the driving of the film extracting means is temporarily stopped, and the film feeding is stopped.
At this point, the horizontal sealer starts to operate, removes air inside the film, and at the same time, seals and fuses the film in the transverse direction at a predetermined position to finish the packaging of the article. When this packaging is completed, the film pull-out means starts driving and rotating again, and the same operation is performed thereafter, so that the sealing packaging is successively performed. When the shape and dimensions of the article to be packaged are changed, the arrangement position of the vertical sealer is adjusted, and the operation timing of the horizontal sealer is adjusted manually or by a command from a control unit.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a perspective view showing a main part of a typical automatic packaging machine using a film with an occlusal fastener according to the present invention. The structure shown in the figure is merely an example, and it is apparent from the following description that the present invention is not limited to the illustrated example.

In FIG. 1, reference numeral 1 denotes a film roll obtained by winding a film 2 with an occlusal fastener. The film 2 constituting the film roll 1 is:
On the left and right side edges along the longitudinal direction of the wide band-shaped film 2,
As shown in FIG. 2, a male bite 3a having a convex cross section and a female bite 3b having a concave cross section are integrally extended by welding or simultaneous molding, respectively, as shown in FIG. The center of 2 is folded in advance in the longitudinal direction into two, and the male and female articulators 3a, 3b extending to the opposite edges thereof are wound in a tubular shape in which they are engaged,
The film roll 1 is used. Therefore, the bite 3
The two-fold film 2 is formed at the time of film roll formation so that the occlusal portions 3a, 3b are not unevenly distributed in the roll axis direction.
Is traversed in the roll axis direction and wound.

The film roll 1 is rotatably supported on a support shaft (not shown) of a film feeding portion in the packaging machine of the present invention with the roll shaft being horizontal. In FIG. 1, reference numerals 4a and 4b denote a pair of upper and lower feed rolls, and guide grooves 4a 'and 4b' for guiding passage of the bite portion 3 are provided at one end of the feed rolls 4a and 4b in the circumferential direction. Is formed. A plurality of guide rolls 5a, 5b,... Are provided between the film roll 1 and the feed roll portion 4. When the feed roll portion 4 is driven to rotate, the two-fold film 2 becomes the guide roll. Unrolled from the film roll 1 while being guided by the rolls 5a, 5b,... The operation of a drive unit (not shown) is controlled so that the feed roll unit 4 is temporarily stopped at the time of welding and fusing of the film 2 described later.

Among the upper and lower feed rolls 4a, 4b, the lower feed roll 4b is a driving rotary roll driven by the driving device via a transmission mechanism also not shown, and among the guide rolls 5a, 5b,. Two guide rolls 5c and 5d adjacent to the lower feed roll 4b on the upstream and downstream sides of the film are disposed below the feed roll 4b, respectively.
The contact area of the film 2 sent out in contact with the film is increased to ensure the film feeding.

The two guide rolls 5b and 5c of the guide rolls 5a to 5c on the upstream side of the feed rolls 4a and 4b guide the film 2 horizontally. A film travel position regulating device 6, which is a part of the main configuration of the present invention, is installed between the two guide rolls 5b and 5c on the travel path of the bite portion 3.
The film travel position restricting device 6 comprises a pair of upper and lower plate members 6a and 6b as shown in an enlarged view in FIG.
Substantially half of the joint surfaces a and 6b are cut out to form a gap 7 at the end of the film including the bite 3 between the butting surfaces. In the inside of the passage gap 7, an occlusal portion guide passage 8 is formed at a position where the occlusal portion 3 passes along the film running path. The occlusal portion guide passage 8 has a large diameter at the occlusal portion entrance and a funnel-shaped first passage 8a having a gradually decreasing diameter in the traveling direction of the occlusion portion 3, and a second passage having the same diameter following the first passage 8a. 8b. Note that among the guide rolls 5a, 5b,.
A part of the guide rolls 5d adjacent to the films a and 4b on the downstream side of the film may be configured as dancer rolls to provide a function of keeping the film tension constant.

Further, according to the present embodiment, the feed roll 4
A guide roll 5e following the guide roll 5d disposed adjacent to the downstream side of the films a and 4b is disposed obliquely upward to guide the running film 2 upward once, and is vertically moved by the guide roll 5e. Turning down. A film opening device 9, which is the most important component of the present invention, is installed on a film traveling path running vertically downward.

In the illustrated example, the film opening device 9 also has a film cutting function. Film opening device 9
Has two metal or synthetic resin plate members 9a and 9b bent into a predetermined shape, a part of which is joined, and a part of which has a film cutout. That is, according to the illustrated example, the plate members 9a and 9b have projecting pieces 9a 'and 9b' which are obliquely bent at a predetermined angle in a direction approaching each other from a part of the upper edge and project. Pieces 9a ', 9
b 'is joined and integrated in the form of a palm, and both plate members 9a, 9b
A predetermined gap d is provided between them. In addition, the same plate material 9
The two ends 9a and 9b of the parts a and 9b which are not provided with the protruding pieces 9a 'and 9b' are supported by the two ends 9a and 9b in the center of the gap d formed between the two ends 9a and 9b. 9
A substantially L-shaped film cutting member 10 having a plane parallel to a and 9b is provided to protrude upward from the gap d.
The gap d is set to a size sufficient for the article to be packaged M to pass.

The film opening device 9 having such a configuration
As shown in FIG. 1, the main body part is installed in the folded edge 2 a of the above-mentioned folded film 2 which travels vertically downward as shown in FIG. Is done. At this time, the installation position is determined so that the cutting blade portion 10a of the L-shaped film cutting member 10 protrudes to the outside across the folded edge 2a of the double-folded film 2, and one of the machine frames (not shown) Attached to the part. When the film opening device 9 is inserted into the folded edge 2a of the new two-fold film 2, the folded edge 2a is cut in advance by a length that allows the film opening device 9 to be inserted.

In the figure, a portion denoted by reference numeral 11 indicated by a virtual line is a supply conveyor for feeding the article to be packaged M into the inside of the two-fold film 2.
1 is inserted into the gap d of the film opening device 9, and the front end thereof is a conveyor support member (not shown) that supports the supply conveyor 11 provided at the lower end of the film opening device 9 from below. Supported by In addition,
In the illustrated example, a belt conveyor is employed as a supply means for the articles to be packaged M. However, a roll conveyor may be employed. In this case, a pusher (not shown) operated by a fluid pressure cylinder or the like behind the roll conveyor. Is installed.

Below the film opening device 9, a vertical sealer 12 and a horizontal sealer 13 are provided. In the illustrated example, a roll-type sealer known as the vertical sealer 12 is applied, and is fed downward across the folded edge 2a of the two-fold film 2 cut by the film opening device 9. A predetermined portion is continuously welded and sealed, and simultaneously melted. For this reason, the sealer 12 is provided with a ring-shaped sealing blade heated by a heater (not shown) on a part of the peripheral surface of one roll, and the other receiving roll surface is made of an elastic material having a predetermined hardness. ing. Although not shown, the mounting position of the vertical sealer 12 is configured to be adjustable in the transverse direction of the film, and the sealing position can be changed according to the type and size of the article to be packaged M. ing.

The vertically sealed film 2 is positively fed out by a feed roll 14 installed on the downstream side of the vertical sealer 12 in the film direction, and the film 2 is cut off by being cut off by the vertical sealer 12. The end pieces 2b of the end portions 2a are sequentially wound and collected by an end piece winding device (not shown).

The horizontal sealer 13 includes the vertical sealer 1.
A sealing device for sealing the cut end of the film by 2 and then fusing the film 2 which is again cylindrical and travels downward at a predetermined position in a transverse direction and at the same time, fusing it, employs a known structure. According to FIG.
Numeral 3 has a so-called seal bar 13a and a receiving bar 13b. Both bars 13a and 13b are disposed on the front and back so as to cross the film running surface, and each of them is a known control operation mechanism with respect to the film running surface. Moves forward and backward in the direction of contact.
According to the illustrated example, brackets 15, 15 are respectively provided vertically downward on the support portions of the two bars 13 a, 13 b, and sponges 16, 16 are opposed to the brackets 15, 15. Is provided. The sponges 16, 16 are urged in the approaching direction by springs 17, respectively, and press the packaged articles M stored in the film 2 existing between the sponges 16, 16 together with the film from the front and rear surfaces, thereby pressing the sponges 16, 16. While the excess air existing in the first and second bars 13a and 13b is removed, the final welding and fusing in the lateral direction are smoothly performed.

Next, continuous packaging by the illustrated automatic packaging machine having the above-described configuration will be described. First, the feed rolls 4a, 4b and the feed roll 14 are driven and rotated to separate the male and female bite 3a, 3b from the film roll 1. Are sequentially fed out. At the time of feeding the film, the film 2 is swung right and left.
Is guided by the funnel-shaped occlusal portion guide passage 8, passes through the film traveling position regulating device 7, and the film traveling path is positioned at a predetermined position. Thereafter, the film 2 travels on a constant traveling path.

The film 2 sent out by the feed rolls 4a and 4b then passes through a film opening device 9. At the time of this passage, the folding side edge of the film 2 is opened with a predetermined gap d at the same time when the film 2 is cut by the film cutting member 10 of the film opening device 9,
From the opening, the articles to be packaged M are sequentially loaded into the film 2 by an appropriate conveying means such as a supply conveyor 11 or the like.
In the illustrated example, the film running path in the supply section of the article to be packaged M is vertically downward, so that the article to be packaged M input from the opening falls by its own weight, but the film passing through the film opening device 9 2 is welded by the vertical sealer 12 and the tubular film 2 is welded in the transverse direction by the previous horizontal sealer 13, so that the lower end is formed into a sealed bag shape by welding. Yes,
It is stored in the same bag.

When the article to be packaged M contained in the bag reaches a predetermined position below the horizontal sealer 13, the driving of the feed rolls 4a and 4b is temporarily stopped, and the feeding of the film 2 is stopped. Here, the horizontal sealer 13 starts operating, and while the film 2 is pressed by the sponges 16 and 16 so as to sandwich the film 2 from the outside together with the article to be packaged M, the air in the film is removed and
Of the same article M
Finish packaging. When this packaging is completed, feed 4
The drive rolls a, 4b and the feed roll 14 start to rotate, and the same operation is performed thereafter, so that the seal packaging is sequentially performed. When the shape and dimensions of the article to be packaged M are changed, the arrangement position of the vertical sealer 12 is adjusted,
The operation timing of the horizontal sealer 13 is adjusted manually or by a command from a control unit (not shown).

FIG. 4 shows a main part of another typical embodiment of the present invention. According to this embodiment, the film opening device 9 does not have the film cutting member 10 and the film opening device 9 has the same structure. The device 9 is installed on the side of the bite 3 of the two-fold film 2. That is, in this embodiment, the male / female bite 3a, 3b
The foldable film 2 is fed into the film opening device 9 in the occluded state, the occlusion is opened by the film opening device 9, and the article to be packaged M is put into the opening as described above. Accordingly, in the illustrated example, an occlusal opening control member 18 is provided in front of the film opening device 9, and an occlusal occlusion having substantially the same configuration as the above-described film traveling position control device 7 is provided downstream of the film opening device 9. A device 18 is installed, and the male and female articulators 3a and 3b, which have been released from the occlusion by the film opening device 9, are re-occluded through the articulator occlusion device 19. The structure of other parts of the film opening device 9 except for the film cutting member 10 is almost the same as that shown in FIG.

Further, in the present invention, although not shown, before the film 2 with the occlusal element is folded in two to form the film roll 1, a wide film with the occlusal element is separately set in advance by a cutting device separately and independently installed. The center of 2 is cut in the longitudinal direction, and the male and female articulators 3a and 3b are in an occlusal state and polymerized to form a film roll 1, which can be set in the automatic packaging machine of the present invention. . However, in this case, the film opening device 9 is not shown in FIG.
Is installed at the site shown in FIG. 1, that is, the film folding side.

In the present invention, a so-called L-type sealer that simultaneously performs vertical and horizontal welding and fusing, which has been widely used in the packaging field, can be used instead of the vertical and horizontal sealers 12 and 13 described above. . In the above embodiment, the traveling path of the film is directed vertically downward on the downstream side of the film from the installation portion of the film opening device. However, the traveling path may be horizontal. A transport means for transporting the articles is required.

[0035]

As is apparent from the above description, according to the automatic packaging machine using the bite-attached film of the present invention, a mechanical film traveling position regulating means having an extremely simple structure and requiring no electronic control means. By installing a film opening device and a conventional film roll with an occlusal fastener with a wide width, a half-width film roll wound from the beginning with the male and female bite engaged is adopted. Not only is it advantageous in terms of space, but also it is possible to determine the running path of the occlusal part that is fed out while being swung in the roll axis direction at a certain location. There is no gap between the upper and lower films when welding and fusing the films, and there is no shift in the occlusal position of the articulator. There Continuous packaging is possible.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main portion schematically showing each mechanism of an automatic packaging machine which is a typical embodiment of the present invention.

FIG. 2 is a perspective view partially showing an example of a male and female bite of a film with bite applied to the packaging machine.

FIG. 3 is a partially enlarged perspective view showing a specific example of a film traveling position regulating device installed in the packaging machine.

FIG. 4 is a partial perspective view showing a main part of an automatic packaging machine according to another representative embodiment of the present invention.

FIG. 5 is a front view showing an example of a horizontal sealer applied to the automatic packaging machine of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Film roll 2 Film with bite 2a Folding edge 3 Bite 3a, 3b Male and female bite 4a, 4b Upper and lower feed rolls 4a ', 4b' Guide groove 5a-5e Guide roll 6 Film travel position control device 6a, 6b Upper and lower plate members 7 Film end passage gap 8 Occlusion part guide passages 8a, 8b First and second passages 9 Film opening device 9a, 9b Plate members 9a ', 9b' Projection 10 Film cutting member 10a Cutting blade portion 11 Supply conveyor 12 Vertical Sealer 13 Horizontal sealer 13a Seal bar 13b Receiving bar 14 Feed roll 15 Bracket 16 Sponge 17 Spring 18 Occlusion part opening regulating member 19 Occlusion device Occlusion device

Claims (6)

(57) [Claims] 1. A film roll obtained by winding a bite-equipped film in which a male bite and a female bite are superposed in an occlusal state at an edge portion while traversing in the roll axis direction; A film pulling means for feeding out a film by control driving; and a male and female being disposed between the film roll and the film drawing means and being in an occlusal state at an edge portion of the film which is fed while being axially shaken from the film roll. Film traveling position regulating means having an articulation guide member for regulating the traveling position of the articulator to a predetermined position; and left and right edges of the film which are disposed subsequent to the film extracting means and are supplied in a superposed state. An opening device that is inserted between the films from any one of the portions to separate and open the polymerized film with a predetermined gap; An article conveying means having a tip portion inserted into the mouth device and sequentially feeding articles to be packaged into the polymerized film; and a heating sealer installed subsequent to the article conveying means for welding and fusing the polymerized film at a predetermined position. equipped with a door
The film travel position regulating means has a film edge inside.
With a guiding gap for guiding the
Formed in the tip running section, the inlet has a large diameter and gradually goes downstream
A funnel-shaped first passage having a small diameter, and a passage having the same diameter following the passage.
A film packaging machine with an occlusal fastener, characterized by having an occlusal part guide passage comprising a second passage . 2. The film packaging machine with an occlusal fastener according to claim 1, wherein the polymer film is formed by folding the center of a band-shaped wide film having an occlusal element on each of left and right edges into two in the longitudinal direction. 3. The film packaging machine with an occlusal fastener according to claim 1, wherein the polymer film is composed of two independent films. 4. The apparatus according to claim 1, wherein the opening device and the article conveying means are
A contractor installed at one of the left and right edges of the polymerized film
The film packaging machine with an occlusal fastener according to claim 1. 5. The apparatus according to claim 1, wherein the opening device and the article transporting means include:
Installed on the folding side of a two-fold film,
3. An incision means for incising a folding edge.
Wrapping machine with bite fastener. 6. The film with an occlusal fastener according to claim 2, wherein the opening device and the article transport means are provided on a folding side of the two-fold film, and have a cutting means for cutting a folded edge of the film. Packaging machine.