JPH05246401A - Charging and packing machine - Google Patents

Abstract

(57) [Abstract] [Purpose] In a filling and packaging machine in which a film to be continuously transferred is formed into a bag and a packaged object is filled and heat-sealed, the film to be cut is cut when the film is filled and sealed. It suppresses the shaking of the place and keeps the cutting position of the seal part stable. The cutter unit 8 for cutting the laterally sealed portion F2 of the film F that has been filled and sealed and continuously transferred is composed of a rotary shaft 32.
Formed by a rotary blade 8A attached to the side and a fixed blade 8B arranged corresponding to the rotary blade,
A film rocking prevention member 34 made of a flexible material is provided on the side substantially along the rotation locus of the rotary blade 8A. [Effect] By contacting the film rocking preventive member 34 with the film F to be cut in the next step to reduce the shaking of the film F, the position of the film F to be cut can be kept stable, and the cutter unit 8 is good. The lateral seal portion F2 can be cut.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filling and packaging machine for filling a liquid, powder or viscous substance.

[0002]

2. Description of the Related Art As conventional filling and packaging machines for automatically filling and packaging liquids, powders or viscous substances, for example, Japanese Utility Model Publication No. 56-40,552 and Japanese Utility Model Publication No. 63-8,56.
As shown in Japanese Patent Publication No. 9 and the like, the film which is continuously transferred is folded back, and the folded both end edges of the film are overlapped and longitudinally sealed, and the longitudinally sealed film is filled with an object to be packaged. A horizontal seal is known, and an example of this will be described with reference to FIGS. 7 and 8. In FIG. 7, reference numeral 1 is a machine base, and a holding frame 2 is provided on a side portion thereof. A film winding R having a film F wound around it is detachably attached, and a film guide section 3 and a film folding section 4 are arranged on the upper part of the machine base 1.
A vertical seal portion 5, first and second horizontal seal portions 6 and 7 and a cutter portion 8 are provided from the upper side on the front surface of the film, and the film F is pulled out from one of the rewinding rolls R and the film is guided through the film guide portion 3. The film F is folded into two along the longitudinal direction by a folding guide 9 which is led out to the folding portion 4 and has a U-shaped tip provided in the film folding portion 4, and a pair of vertical heat seals of the vertical sealing portion 5 facing each other. The roll 10 is heat-sealed at the folded end portions of the film F, and the film F is formed into a tubular shape by the vertical sealing portion F1. The pair of horizontal heat-sealing rolls 11 of the first horizontal sealing portion 6 face each other. The film F is heat-sealed in the lateral direction, and the laterally sealed portion F2 forms a bottom portion to be a packaging bag. With this, the film F formed in a cylindrical shape with a bottom is filled with a filling mechanism 12 from a liquid such as a sauce. The film F is further fed, and the bag F side of the film F is laterally sealed again by the lateral heat seal roll 11 of the first lateral sealing section 6 to seal the object W to be packaged. The lateral sealing portion F2 is further sealed by the lateral heat sealing roll 11 of the second lateral sealing portion 7, and then the intermediate portion of the lateral sealing portion F2 is fixed to the rotary blade 8A.
The cutter unit 8 having the fixed blade 8B is used to cut the film, and the film is wrapped by the cutter unit 8 and is taken out and conveyed by a conveyor (not shown).

[0003]

In the conventional filling and packaging machine described above, the vertical heat seal roll 10 and the first and second heat seal rolls are used.
The horizontal heat-sealing rolls 11 and 11 feed the film F while sealing it, and then laterally seal the film F
Since the middle part of 2 is cut by the cutter part 8, every time the lateral seal part F2 of the filled film F is cut by the cutter part 8, the end part of the film F on the lower end side cut in the next step is Since it is likely to be a free end, it swings easily as shown in FIG. 8. As a result, if the film F is fed in a swaying state, the position of the lateral sealing portion F2, which is a cutting portion, will shift in the next step, and The film F filled with the package W is cut to have different lengths,
There is a problem that the length in the longitudinal direction of the film is likely to vary and is not stable, and in particular, when the feeding speed of the film F is increased in order to speed up the filling and packaging work, the problem that the above-mentioned problem is likely to appear is left. There is.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a filling and packaging machine capable of suppressing the shaking of the film portion on the lower end side cut by the cutter portion in the packaging work process.

[0005]

According to the present invention, a continuously conveyed film is fed to a film folding portion, the film is folded back by a folding guide of the film folding portion, and the folded both end edges of the film are overlapped by a vertical heat seal roll. Vertically sealed to form the film into a tubular shape, laterally sealed with a horizontal heat-sealing roll to form a bottom portion to be a packaging bag, and the inside of the film formed into the tubular shape with a bottom is filled with an object to be packaged. In a filling and packaging machine in which a portion which is the bag mouth portion side of the film is horizontally sealed by a horizontal heat seal roll while continuously feeding the film, and the intermediate portion of this horizontal seal portion is cut by a cutter portion, the cutter The part is formed of a rotary blade attached to the rotary shaft side and a fixed blade arranged corresponding to the rotary blade, and the rotary blade is provided on the rotary shaft side. Providing the film rocking motion preventing member made of a flexible material substantially along on a rotating locus a filling and packaging machine according to claim.

[0006]

By arranging the film rocking prevention member made of a flexible material substantially along the rotation locus of the rotary blade, the lower end side of the continuously transferred film is pressed and regulated by the rocking prevention member. Oscillation is suppressed, and the middle portion of the laterally sealed portion of the film can be satisfactorily cut by the cutter portion.

[0007]

Embodiments of the present invention will be described below with reference to the accompanying drawings. It should be noted that the same parts or equivalent parts as those in FIGS.

1 to 5 show a first embodiment of the present invention. A holding frame 2 is provided on the side of a machine base 1 of a filling and packaging machine, and a film F is wound around the holding frame 2. A film roll R is provided so as to be removable and replaceable. A film slack prevention mechanism 14 is provided on the machine base 1, and a guide roll 15 for guiding the film F that has passed through the film slack prevention mechanism 14 is provided on the film fold section 4 and the fold section 4 is provided. An adjusting mechanism 16 for moving the folding guide 9 is provided.

The adjusting mechanism 16 has a nut body 17 arranged on the upper part of the machine base 1 so as to be capable of advancing and retreating in a rotation stop state in a direction transverse to the transport direction of the film F. Screw a motor 19 for rotating the screw shaft 18 in the forward and reverse directions on the upper part of the machine base 1, and attach the tip to the nut body 17 with a U-shape.
Attaching the folding guide 9 formed on the curved surface,
A guide rod 20 that extends to an upper position of the lateral seal portion 6 is suspended from the folding guide 9.

A nozzle 21 extending to the upper position of the horizontal seal portion 6 is provided adjacent to the guide rod 20, and the nozzle 21 is filled with a liquid, powder, viscous substance or the like in the film F by a filling device (not shown). The package W is filled. Further, a pair of vertical heat seal rolls 10 and 10 of the vertical seal portion 5 are arranged with the guide rod 20 and the nozzle 21 interposed therebetween, and a bearing stand 22 is attached to the front surface of the machine stand 1 and the bearing stand 22 is provided between Both vertical heat seal rolls 10 and 10 are rotatably supported, and gears 23 and 23 meshing with one vertical heat seal roll 10 and the other vertical heat seal roll 10 are fixed, and one gear 23 A drive gear 25 driven by a drive device (not shown) provided in the machine base 1 is meshed with the driven gear 24 integrally with the seal member 10A on one side of both vertical heat seal rolls 10, 10. And the outer peripheral surface of this seal member 10A is knurled, and a heater (not shown) is built in both vertical heat seal rolls 10.

Further, the first horizontal seal portion 6 disposed below the vertical seal portion 5 and the second horizontal seal portion 7 disposed below the first horizontal seal portion 6 are , A gear 27 that rotatably supports both lateral heat seal rolls 11 between bearing pedestals 26 and meshes with one lateral heat seal roll 11 and the other lateral heat seal roll 11 respectively.
, A driven gear 28 is integrally provided on one gear 27, a drive gear 29 driven by a drive device (not shown) is meshed with the driven gear 28, and a seal member 11A is provided on the outer periphery of both lateral heat seal rolls 11. The heaters are mounted at angular intervals, and a heater (not shown) for heating the seal member 11A is built therein.

The first and second horizontal heat seal rolls 1
The gears 31 of the rotary encoder 30 mesh with the gears 1 and 11 of the rotary encoder 30, respectively, to detect the rotation of each of the transverse heat seal rolls 11 and use the rotation as an electric signal to drive each by a control unit (not shown). The gears 25 and 29 are rotationally driven to rotate at a periodic circular speed.

The cutter portion 8 disposed below the horizontal seal portion 7 is provided with a rotary blade 8A on a rotary shaft 32 which is rotated by a driving device such as a servo motor (not shown), and the rotary blade 8A is provided with the rotary blade 8A. Correspondingly, the fixed blade 8B is provided on the support base 33 provided on the machine base 1.

On the rotary shaft 32 side of the cutter unit 8,
A film rocking preventive member 34 made of a flexible material is attached substantially along the rotation locus of the rotary blade 8A rotated by a driving device (not shown). In the first embodiment, the film rocking preventive member is attached. 34 is formed of a synthetic resin brush 34A, and the base end of the brush 34A is attached and fixed to the rotary shaft 32 side so as to extend substantially radially from the axial direction of the rotary shaft 32.

On the fixed blade 8B side of the cutter unit 8, a film swing suppressing plate 35 is provided so as to face the position of the brush 34A serving as the film swing preventing member 34, and the film swing preventing member 34 is provided. It is configured to promote the function.

As described above, in this embodiment, the film F which is continuously transferred is sent to the film folding section 4, and the film F is folded along the longitudinal direction of the film F by the folding guide 9 of the film folding section 4. The both ends of the folded film F are overlapped and heat-sealed in the vertical direction by the vertical heat-sealing roll 10, and the film F is wound by the vertical sealing portion F1.
Is formed into a tubular shape, and the first pair of horizontal heat seal rolls 1
The film F is heat-sealed in the lateral direction with 1 and 11, the bottom portion to be a packaging bag is formed by the side-sealed portion F2, and the packaged object W is filled with the filling mechanism 12 in the film F formed in the bottomed cylindrical shape. While filling and further feeding the film F, the bag mouth side of the film F is laterally sealed by the lateral heat seal roll 11 of the first lateral sealing portion 6 to seal the packaged object W, and the sealed film F The horizontal seal portion F2 of the second horizontal seal portion 7 is doubly sealed by the horizontal heat seal roll 11, and then the intermediate portion of the horizontal seal portion F2 is formed by the cutter portion 8 including the rotary blade 8A and the fixed blade 8B. Be disconnected by.

When the horizontal sealing portion F2 of the film F, which seals the filling and is continuously transferred, is cut by the cutter portion 8, the second horizontal heat-sealing roll 11 is further extended along the cutting portion 8 from below. When the bag-making film filled and packaged continuously moves, the rotary shaft 32 of the cutter unit 8
The brush 34A, which is a film rocking prevention member 34 provided on the side, acts so as to come out of the bag F while making contact with the film F made by the rotation of the rotary shaft 32, so that the film F can be smoothly fed.
By moving the lower end side of the film F and contacting the surface of the film F with the brush 34A made of a flexible material, the swaying of the film F in the front-back direction can be alleviated. While preventing the above, the fixed blade 8B and the rotary blade 8A can cut the intermediate portion of the lateral sealing portion F2 in a stable state, and the packaging form and the packaging state can be kept good.

The film F in which the brush 34A is made into a bag
When one side of the film F is in contact with the other side of the film F, the opposite side of the film F is suppressed by the film swing suppressing plate 35 provided at a position opposed to the one side of the film F, so that the film F further shaken in the bag is shaken. Therefore, the cutting process of the lateral seal portion F2 can be maintained more stably. Further, since the rotating direction of the brush 34A is the same as the feeding direction of the film F which is continuously transferred, an action of pulling the lower end side of the film F further downward works, and the slack phenomenon of the film F at the time of feeding the film F is also caused. It is possible to solve it in advance.

Further, the tip end side of the brush 34A is arranged so as to extend toward the side opposite to the rotating direction of the rotating shaft 32, so that the film F is prevented from swinging due to the feeding of the film F and the self-elasticity of the brush 34A itself. And the pulling action of the film F can be effectively performed.

FIG. 6 shows a second embodiment of the present invention.
The same or equivalent parts as those of the first embodiment will be designated by the same reference numerals. In this embodiment, the film rocking preventive member 34 is formed of a sponge-like member having flexibility, for example, a sponge 34B, and the sponge 34B is attached to the rotary blade 8A.
It is attached and fixed to the rotating shaft 32 side for fixing.

The film F of the film rocking prevention member 34
Support to attach fixed blade 8B to promote shaking
On the 33 side, a film swing suppressing plate 35A made of a synthetic resin book plate having elasticity is arranged upstream of the fixed blade 8B in the feeding direction of the film F.

Therefore, in the second embodiment, the film rocking preventive member 34 including the rotary blade 8A and the sponge 34B is rotated in accordance with the rotation of the rotary shaft 32, and the film F is made in the same direction as the transport direction. Sponge 34 while rotating in the direction
By pressing B against the surface of film F, film F
It is possible to absorb the swinging action of the horizontal sponge 34B by the sponge 34B, which allows the intermediate portion of the horizontal sealing portion F2 to be fed to the positions of the fixed blade 8B and the rotary blade 8A while preventing the positional deviation of the horizontal sealing portion F2 of the film F. This makes it possible to cut a predetermined position.

By forming the film rocking suppression plate 35A from a book plate having elasticity, the film rocking prevention plate 35A and the sponge 34B serving as the film rocking prevention member 34 synergistically suppress the shaking of the film F. You can

The present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the present invention. For example, a sponge-like member can be formed substantially along the rotation locus region of the rotary blade. It may be attached to the rotary shaft side, and a soft brush may be provided on the surface portion of this sponge-like member to constitute the film rocking preventive member. Although the film swing suppressing plate is provided on the fixed blade side, it may be configured by only the film swing preventing member.

Further, in the embodiment of the present invention, the horizontal heat seal rolls provided in the first and second horizontal seal portions constitute the horizontal seal mechanism in two stages to double seal the horizontal seal portions of the film. However, the second lateral seal portion may be removed depending on the application conditions.

[0026]

INDUSTRIAL APPLICABILITY The present invention relates to a filling and packaging machine in which a packaged object is filled and packaged while a continuously transferred film is made into a bag, and a seal portion of the film thus filled is cut by a cutter. The part is composed of a rotary blade attached to the rotary shaft side and a fixed blade arranged corresponding to the rotary blade, and the flexible part is provided on the rotary shaft side substantially along the rotation trajectory of the rotary blade. A film rocking preventive member made of a flexible material is provided, and it is possible to prevent the film from rocking in the front-rear direction by the film rocking preventive member contacting the lower end of the film that is packed and continuously transferred. Therefore, the middle portion of the lateral seal portion of the film can be satisfactorily cut by the cutter portion.

[Brief description of drawings]

FIG. 1 is a side sectional view of a cutter section showing a first embodiment of the present invention.

FIG. 2 is a schematic explanatory view of a side surface of a main part of the filling and packaging machine showing the first embodiment of the present invention.

FIG. 3 is a front view of the filling and packaging machine according to the first embodiment of the present invention.

FIG. 4 is a front view of the main part of the seal portion showing the first embodiment of the present invention.

FIG. 5 is a plan view of an essential part of the lateral seal portion showing the first embodiment of the present invention.

FIG. 6 is a side view of a cutter section showing a second embodiment of the present invention.

FIG. 7 is a front view of a filling and packaging machine showing a conventional example.

FIG. 8 is a schematic explanatory view of a side surface of a main part of a filling and packaging machine showing a conventional example.

[Explanation of symbols]

 1 Machine stand 3 Film guide section 4 Film folding section 8 Cutter section 8A Rotating blade 8B Fixed blade 9 Folding guide 10 Vertical heat seal roll 11 Horizontal heat seal roll 21 Nozzle 32 Rotating shaft 33 Support stand 34 Film rocking prevention member 35 Film shaking Motion suppression plate

Claims (3)

[Claims] 1. A film is fed by continuously feeding a film to a film folding section, folding the film by a folding guide of the film folding section, stacking both edges of the folding back of the film, and vertically sealing by a vertical heat seal roll. Formed in the shape of a bag, the bottom is formed into a packaging bag by laterally sealing with a horizontal heat-sealing roll, and the film to be packaged is filled into the film formed into a tubular shape with a bottom. In a filling and packaging machine in which a portion to be on the mouth side is laterally sealed by a horizontal heat-sealing roll and continuously wrapped, and the middle portion of this horizontal sealed portion is cut by a cutter portion, the cutter portion is on the rotary shaft side. The rotary blade is attached to the rotary blade, and the fixed blade is provided corresponding to the rotary blade. A filling and packaging machine comprising a film swing preventing member made of a flexible material. 2. The filling and packaging machine according to claim 1, wherein the film swing preventing member is a brush extending substantially radially from the axial direction of the rotating shaft. 3. The filling and packaging machine according to claim 1, wherein the film rocking prevention member is a spongy member having flexibility.