JP3097066B2 - Heat sealing device in filling and packaging machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat seal in a filling and packaging machine for making a film wound into a roll and filling the contents of the packaging bag with a liquid, powder or viscous substance. Related to the device.

[0002]

2. Description of the Related Art As a filling and packaging machine for filling and packaging contents such as liquids, powders, and viscous substances, see, for example,
As disclosed in JP-A-153410, JP-A-2-4626, JP-A-2-32929, etc., a continuously transported film is folded back, and the folded both edges of the film are overlapped with each other by a vertical sealing mechanism. Seal and
The contents are filled in the vertically sealed film, the film is horizontally sealed by the horizontal sealing mechanism to form a small bag, and then the center portion of the horizontal sealing portion is cut by the cutter mechanism to be separated as a single packet. After making small bags with horizontal sealing by the horizontal sealing mechanism and then carrying out the small bags in a connected state, they are continuously carried out and packed in a storage box for packaging. Is known,
This example will be described with reference to FIG.

In FIG. 1, reference numeral 1 denotes a machine frame, and a holding frame 2 is provided on a side of the machine frame.
A film guide R and a film folding section 4 are disposed on the upper part of the machine base 1 and a vertical sealing mechanism is provided on the front part of the machine base 1 from above. 5, first and second horizontal sealing mechanisms 6 and 7, and a cutter mechanism 8 are provided. The film F is drawn out from one of the roll-shaped film winding ends R, and is led out to the film folding section 4 via the film guide section 3. The film F is folded in two along the longitudinal direction by the film folding section 4, and the film F is folded by the pair of the vertical heat sealing sections 9 of the vertical sealing mechanism 5.
The folded ends are heat-sealed and sent out, and the film F is formed into a tubular shape by the vertical sealing portion FH, and the film F is horizontally transferred by the pair of horizontal heat sealing portions 10 facing the first horizontal sealing mechanism 6. Heat seal in the direction
The bottom part which becomes a packaging bag is formed by S, and the contents W made of a liquid such as a source are filled into the film F formed into a bottomed cylindrical shape by the filling mechanism J, and the film F is further fed. Then, the contents W are sealed by horizontally sealing the bag opening side of the film F again by the horizontal heat sealing portion 10 forming a pair of the first horizontal sealing mechanism 6, and the horizontal sealing portion FS
Is further sealed by a pair of horizontal heat sealing portions 10A provided in the second horizontal sealing mechanism 7, and three sides of the film F are sealed to form a small bag P, and then the horizontal sealing portion FS where the small bag P is formed is formed. After cutting the intermediate portion as a single packet P by the cutter mechanism 8 and carrying it out, or by laterally sealing the small bags P by the horizontal sealing mechanisms 6 and 7, the operation of the cutter mechanism 8 is stopped. , Consecutive sachets P
Are connected to carry out the small bag P in a continuous packaging state.

[0006] As shown in FIG. 6, the pouches to be formed and sealed on three sides include a vertical sealing portion FH where the folded ends of the film F are heat-sealed by a vertical heat sealing portion 9, and The small bag P filled with the contents W is formed by the horizontal sealing portion FS heat-sealed by the horizontal heat sealing portions 10 and 10A in a direction orthogonal to the longitudinal direction.

[0007] As shown in FIG. 7, a vertical sealing portion FH 1 in which the folded end portions of the film F and the bag-like edge portion folded in half are heat-sealed by two vertical heat sealing portions (not shown), respectively. , FH2, and a transverse seal portion FS heat-sealed by a transverse heat seal portion (not shown) in a direction orthogonal to the longitudinal direction of the film F, thereby sealing the four sides of the film F to form a small bag P.

As shown in FIG. 8, two films F1 and F2 are superposed and guided to be pulled out, and both side edges of each of the films F1 and F2 are heat-sealed by two vertical heat-sealing portions (not shown). Then, the bag is formed into a cylindrical shape by the vertical sealing portions FH1 and FH2 on both sides, and then the film F is sealed on both sides by a horizontal sealing portion FS heat-sealed by a horizontal heat sealing portion (not shown) in a direction orthogonal to the longitudinal direction of the film F. In some cases, a small bag P is formed by heat sealing.

Further, as shown in FIG. 9, one film F is pulled out and guided in a half-folded state, and the folded end portion folded in the half-fold and the central portion of the folded film F are respectively shown by two (not shown). Heat-sealed by the vertical heat-sealing part, and the heat-sealed vertical seal locations FH1, FH2
In this manner, two rows are formed into a tubular bag, and each row is filled with different contents W1 and W2 such as a sauce and mayonnaise, and then heat is applied to the film F in a direction orthogonal to the longitudinal direction of the film F by a horizontal heat seal portion (not shown). The horizontal seal portion FS and the vertical seal portions FH1, F
There is also a type in which the sachets P are arranged in two rows and sealed by packing according to H2. Although not shown, a filling and packaging in which a plurality of sachets are formed continuously by forming a film into a tubular shape in three or more rows. Machines have also been proposed.

[0008]

By the way, for example, when forming the packaging pouches P shown in FIGS. 7 to 9 as described above, if the width dimensions or the vertical sealing positions of the packaging pouches P are different, conventionally, FIG. As shown, at least one of the vertical heat seal portions 9 and 9A of the vertical heat seal portions 9 and 9A attached and fixed to the vertical heat seal roll main body 5A of the vertical seal mechanism 5 in accordance with the width dimension of the film F and the vertical seal position. The position of the vertical sealing portion FH2 is adjusted in accordance with the width of the small bag P by adjusting the movement with respect to the vertical heat seal roll body 5A.
Is set.

In this case, the vertical heat seal roll body 5A
A vertical heat seal portion 9A is inserted through the outer peripheral portion of the main body, and the vertical heat seal portion 9A is screwed toward the outer peripheral portion of the vertical heat seal roll main body 5A with a fixing bolt B or the like, so that the vertical heat seal portion 9A is positioned at a predetermined position. The seal portion 9A can be attached and fixed. However, since the vertical heat seal portion 9A is pressed against the axis of the vertical heat seal roll main body 5A by a fixing bolt B in the radial direction and fixed, the vertical heat seal roll main body is fixed. As the clearance between the outer diameter of 5A and the inner diameter of vertical heat seal 9A increases, the vertical heat seal 9A is more likely to be eccentric with respect to the axis of vertical heat seal roll body 5A. The pressing force applied to the film F, which is sandwiched between the vertical heat seal portions 9A and heat-sealed, is displaced. In a portion where the clearance between the sealing portions 9A is partially too large and the pressing force against the film F is insufficient, the sealing state of the vertical sealing portion FH2 cannot be maintained due to insufficient fusion at the joining surface of the film F, and the contents W May leak out, and the clearance between the vertical heat seal portions 9A is partially too small due to the fixing of the paired vertical heat seal portions 9A in an eccentric state. The molten resin on the joining surface of the film F is partially extruded due to being too high, and the resin component contributing to the adhesion of the film F is reduced, and the sealing strength of the vertical sealing portion FH2 of the film F is partially reduced. In some cases.

Therefore, the present invention is capable of adjusting and moving the vertical heat seal portion assembled to the vertical heat seal roll main body along the axis thereof while preventing the vertical heat seal roll main body from being eccentric with respect to the axis of the vertical heat seal roll main body. It is an object of the present invention to provide a heat sealing device that can be fixed to a heat seal device.

[0011]

SUMMARY OF THE INVENTION According to the present invention, a film which is continuously transported is vertically sealed by a vertical sealing mechanism to form the film into a cylindrical shape, and a bottom portion which becomes a packaging bag is horizontally sealed by a horizontal sealing mechanism. It is formed and filled with the contents in the film formed into a bottomed cylindrical shape, and furthermore, while the film is being fed, a portion on the bag mouth side of the film is horizontally sealed by a horizontal sealing mechanism and continuously packed as small bags. In the filling and packaging machine, the vertical sealing mechanism includes a pair of rotatably provided vertical heat seal roll main bodies and a movable adjustment with respect to the vertical heat seal roll main bodies.
And the vertical heat seal roll is inserted
That together with the mounting holes are formed, a boss portion having a longitudinal heat-sealed portion that protrudes in a flange shape at the periphery, an annular groove having a tapered surface on the inside on the side of the boss portion, the annular groove portion The cylindrical shape provided on the mounting hole side
An annular tapered thin portion, a tapered ring fitted and arranged in the annular groove, an appropriate number of bolt insertion holes provided in the thickness direction of the tapered ring, and the boss corresponding to the bolt insertion hole. A bolt mounting hole provided in the thickness direction of the boss portion from the deepest portion of the annular groove portion of the portion, and inserted into the bolt mounting hole and the bolt insertion hole and tightened, and the tapered ring is attached to the boss portion by the vertical heat. a tightening bolt for diameter fix <br/> the tapered thin portion consisting of a cylindrical shape in the longitudinal heat sealing roll body side by press-fitting in the axial direction of the seal roll body, heat-sealing device in the filling and packaging machine comprising a It is.

[0012]

[Function] A tightening bolt is tightened on the outer peripheral surface of the vertical heat seal roll body via a taper ring, and the tightening bolt is removed from the cylindrical shape provided on the boss portion of the vertical heat seal portion.
The tapered thin portion is reduced in diameter and fixed, so that the concentricity, which is the mounting position of the vertical heat seal portion with respect to the axis of the vertical heat seal roll body, is improved, and the vertical heat seal roll is vertically heat-sealed. Section can be moved and adjusted.
Fixed.

[0013]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIGS. 1 to 3 show a first embodiment of the present invention. A holding frame 12 is provided on the side of a machine base 11 of a filling and packaging machine so that a film roll R wound in a roll shape can be detachably replaced. From the film roll R supported by the holding frame 12, the film F
Is guided out.

A film guide section 13 comprising a film slack preventing mechanism is provided on the upper portion of the machine stand 11, and the film F passing through the film guide section 13 is guided to a film folding section 14. The folding portion 14 is provided with an adjustment mechanism 15 that can adjust the movement of the film F in accordance with the width dimension of the film F, and has a rod-shaped guide rod 16 that supports and guides the folded portion of the film F. .

Two nozzles 18 and 18A provided in the filling mechanism 17 are arranged in a hanging manner along with the guide rod 16, and the source, mayonnaise, soy sauce, etc. are arranged through the nozzles 18 and 18A. The contents W1 and W2 are provided so as to be filled.

A vertical seal mechanism 19, first and second horizontal seal mechanisms 20, 21 and a cutter mechanism 22 are provided below the film folding section 14 on the front side of the machine base 1 from above. The package 22 is cut as a single-packed pouch P by the operation of the mechanism 22, and the pouch P is unloaded through the unloading mechanism 23, or the operation of the cutter mechanism 22 is stopped. A small bag P is formed by lateral sealing, and the small bag P connected in this continuous state can be carried out through the carrying-out mechanism 23.

The vertical seal mechanism 19 of the present invention has bearing stands 24, 24A mounted on the front of the machine base 11,
A pair of the vertical heat seal bodies 25 provided on the vertical seal mechanism 19 are rotatably supported between the 24, 24A, and a pair of the vertical heat seals is formed so as to sandwich the guide rod 16 and the nozzles 18, 18A. A seal body 25 is disposed in parallel, and a helical gear 26 meshing with one of the longitudinal heat seal roll bodies 25 and the other longitudinal heat seal roll body 25 is fixed, and a bevel gear driven by one of the helical gears 26 is driven. 27 is provided integrally,
A drive device 28 provided in the machine base 11 on the driven bevel gear 27
The drive bevel gear 29 driven by is geared.

Further, a pair of the above-mentioned vertical heat seal roll bodies
On one side of 25, a first vertical heat seal portion 30 for overlapping and heat-sealing the folded both edges of the film F, which is folded and stabilized by the film folding portion 14, is inserted through the vertical heat seal roll body 25, respectively. The vertical heat seal portions 30 are attached and fixed to the vertical heat seal roll main body 25 via fixing nuts 31.

In the case where the packaging small bag P shown in FIG. 9 is formed and sealed, in addition to the first vertical heat sealing portion 30, the central portion of the folded film F is placed in the vertical direction. In this embodiment, a mounting hole 32 is provided through which each of the vertical heat sealing roll main bodies 25 is inserted, and a central portion of the folded film F is vertically sealed on an outer peripheral portion. Second vertical heat seal section
A boss 34 having 33 is attached movably along the axial direction of the vertical heat seal roll main body 25.

The second vertical heat seal portion 33 is provided with a boss portion 34
The central portion of the folded and supplied film F is heat-sealed while being pressed together with the rotation of the paired second vertical heat seal portions 33.

On the side of the boss 34, an annular groove 36 having a tapered surface 35 formed inside is formed, and the annular groove 36 forms a cylindrical shape on the mounting hole 32 side. An annular tapered thin portion 37 is formed, and an appropriate number of bolt mounting holes 38 are provided from the deepest portion of the annular groove portion 36 in the thickness direction of the boss portion 34.

A tapered ring 39 having substantially the same shape as that of the annular groove 36 of the boss 34 is fitted and arranged in the annular groove 36, and the tapered ring 39 has the second shape along the thickness direction of the tapered ring 39. A bolt insertion hole 40 is provided at a position corresponding to the bolt mounting hole 38 of the boss portion 34 provided with the vertical heat seal portion 33, and the boss portion 34 having the second vertical heat seal portion 33 is provided.
After the tapered ring 39 is inserted and arranged in the annular groove 36, the tightening bolt 41 is inserted into the bolt mounting hole 38 provided in the boss 34 and the bolt insertion hole 40 provided in the tapered ring 39, By turning and tightening the tightening bolt 41, the bolt insertion hole 40
The threaded portion 40A provided on the boss portion 34 and the threaded portion 41A of the tightening bolt 41 are screwed together, and the threaded portion tapers in the depth direction of the annular groove portion 36 of the boss portion 34, that is, in the axial direction of the vertical heat seal roll body 25. The ring 39 is fitted, and at the same time, the tapered thin portion 37 having a cylindrical shape provided on the boss portion 34 is reduced in diameter toward the outer peripheral surface of the vertical heat seal roll main body 25 and tightened and fixed.

In the meantime, heaters H are disposed in the hollow portions of the pair of vertical heat seal roll bodies 25, respectively.
The first vertical heat seal portion 30 and the second vertical heat seal portion 33 are heated by the heater H.

As described above, in the filling and packaging machine according to the present embodiment, the film F is pulled out and guided from the film roll R wound in the form of a roll, and the continuously transported film F
To the film turn-back section 14 via the film guide section 13,
After being folded in two along the guide rod 16 provided in the film folding portion 14, the film is sent to the vertical heat sealing mechanism 19, and the first longitudinal heat is applied while the folded edges of the folded film F are overlapped. While vertically sealing the film F in the vertical direction by the seal portion 30, the central portion of the folded film F is vertically sealed in the vertical direction by the second vertical heat seal portion 33, and as shown in FIG. Vertical heat seal part 3
The film F is formed into a cylindrical bag in two rows at each of the vertically sealed portions FH1 and FH2 vertically sealed by 0 and 33,
Next, the film F is laterally horizontally sealed by a pair of horizontal heat seal portions 20A of the first horizontal seal mechanism 20, and a bottom portion that becomes a packaging bag is formed by the horizontal seal portion FS.
Thus, the contents F1 and W2 such as liquids are filled into the film F formed in the bottomed cylindrical shape in two rows through the two nozzles 18 and 18A provided in the filling mechanism 17, and the film F is further fed. While the horizontal heat sealing portion 20A of the first horizontal sealing mechanism 20
Then, the contents W1 and W2 are sealed by horizontally sealing the portion on the bag mouth side of the film F, and the sealed horizontal sealing portion FS is sealed by the horizontal heat sealing portion 21A of the second horizontal sealing mechanism 21.
The three sides of the film F are double-sealed to form a small bag P, and then the intermediate portion of the horizontal sealing portion FS where the small bag P is formed is cut as a single packet P by the cutter mechanism 22, and the cut small bag is cut. P is unloaded via the unloading mechanism 23, or the continuous pouches P are unloaded via the unloading mechanism 23 in a continuous packaging state with the operation of the cutter mechanism 22 stopped.

In the embodiment described above, the contents W1, W
In the case where the width size or the vertical sealing position of the pouches P to be packed is different when the pouches P are formed by filling the pouches 2 with each other, usually, the positions of the folded both edges of the film F guided and guided by the film folding portion 14 are determined. Because it is a standard,
The first in which the folded both edges of the film F are overlapped and vertically sealed.
The fixed position of the vertical heat seal portion 30 is fixed and held on the vertical heat seal roll main body 25 as an immovable one.
The mounting position of the vertical heat seal portion 33 is adjusted and moved.

In this case, the guide rod 16 for supporting the folded portion of the film F is adjusted according to the width of the film F by an adjusting mechanism.
15. When adjusting the position of the second vertical heat seal portion 33 for vertically heat-sealing the central portion between the folded portion of the folded film F and the both end edges of the folded film F while adjusting the movement through 15 By loosening the screw portion 41A of each tightening bolt 41 and the screw portion 40A provided in the bolt insertion hole 40 of the taper ring 39 to release the screwing force, the tapered ring 39 has an annular groove portion provided in the boss portion 34. Acting in the direction opposite to the depth direction of 36, that is, in the loosening direction, the fitted state of the tapered ring 39 and the annular groove 36 provided in the boss 34 is released, whereby the boss 34 pressed by the tapered ring 39 is released. Tapered thin part of cylindrical shape provided in
37, the tapered thin portion 37, which has been reduced in diameter and fixedly secured to the outer peripheral surface of the vertical heat seal roll main body 25, can move in the axial direction of the vertical heat seal roll main body 25, and is folded back. The boss portion 34 provided with the second vertical heat seal portion 33 is moved and adjusted in accordance with the vertical seal position at the center of the film F thus formed.
By turning and tightening, the taper ring 39 is fitted into the annular groove portion 36 of the boss portion 34, so that a circle provided in the boss portion 34 is formed.
The tapered thin portion 37 having a cylindrical shape is reduced in diameter toward the outer peripheral surface of the vertical heat seal roll main body 25 via the tapered ring 39, and is tightened and fixed.

At this time, since the cylindrical tapered thin portion 37 is uniformly reduced in diameter on the outer peripheral surface of the vertical heat seal roll main body 25, the second vertical heat seal assembled and fixed to the vertical heat seal roll main body 25 is fixed. The seal portion 33 can be fixed to the vertical heat seal roll main body 25 so as to be movable while suppressing eccentricity with respect to the axis of the main body 25, and the clearance between the paired second vertical heat seal portions 33 is kept substantially constant. The vertical sealing point FH for the film F due to eccentricity.
2. Insufficient melting of the bonding surface of the film F caused by insufficient bonding force of the film 2 due to insufficient sealing, or the bonding force of the bonding surface of the film F is extruded due to the partially too high bonding force to the film F, and the bonding of the film F It is possible to solve the problem that the amount of resin contributing is reduced and the sealing strength of the vertical sealing portion FH2 of the film F is partially reduced, and the tapered thin portion 37 having a cylindrical shape can be eliminated.
Therefore, the heat from the heated vertical heat seal roll body 25
Heat transfer to the vertical heat seal sections 30 and 33 on average.
It is possible to seal the vertical seal points FH1 and FH2.
The state can be performed well.

In the embodiment described above, one film F is pulled out and guided in a half-folded state, and the two ends of the half-folded film F and the center of the folded film F are connected by two vertical heats. The example in which the small bag P is formed by heat sealing in the vertical direction by the sealing portions 30 and 33 and forming the bag in a cylindrical shape in two rows has been described. For example, as shown in FIG. As shown in FIG. 8, two films F1 and F2 are superposed and guided to be drawn out, and both side edges of each of the films F1 and F2 are heat-sealed in the vertical direction by two vertical heat-sealing portions. The pouch P is formed by a four-way seal of the films F1 and F2, or a plurality of vertical heat seal portions (not shown) are provided. By applying the same heat sealing device as in the above-described embodiment as an adjustment mechanism of the vertical heat seal portion in forming a small pouch, the vertical seal position can be properly heat-sealed according to different specifications. is there.

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, the vertical heat seal portion and the boss portion are formed separately. Alternatively, a configuration may be adopted in which an annular vertical heat seal portion is fitted and fixed in the boss portion, and a circle provided in the boss portion is provided.
The thickness of the cylindrical tapered thin portion, the degree of taper inclination, etc. may be set as appropriate.
In this embodiment, a screw portion 38A is formed in a bolt mounting hole 38 provided in a boss portion 34 without providing a screw portion in a bolt insertion hole 40 of a taper ring 39 in this embodiment, and a screw portion of a tightening bolt 41 is formed. 41A may be screwed into the screw portion 38A of the bolt mounting hole 38 and screwed and fixed.

[0030]

According to the present invention, in particular, the vertical seal mechanism includes a pair of rotatable vertical heat seal roll bodies having a built-in heater, and the vertical heat seal roll bodies.
With respect to the vertical heat shield.
A boss portion provided with a mounting hole through which the roll is inserted, and a vertical heat seal portion protruding in a flange shape on the outer peripheral portion, an annular groove portion having a tapered surface on the inner side on the side surface of the boss portion, An annular tapered thin portion having a cylindrical shape provided on the mounting hole side by an annular groove, a tapered ring fitted and arranged in the annular groove, and an appropriate number of bolts provided in the thickness direction of the tapered ring An insertion hole,
A bolt mounting hole provided in the thickness direction of the boss portion from the deepest portion of the annular groove portion of the boss portion corresponding to the bolt insertion hole,
The tapered thin portion having a cylindrical shape is inserted into the bolt mounting hole and the bolt insertion hole and tightened by turning the tapered ring into the boss portion in the axial direction of the vertical heat seal roll body. A heat-sealing device in a filling and packaging machine, comprising: a fastening bolt for reducing the diameter of the heat-sealing roll main body; and a heat-sealing portion formed by the tightening bolt on the outer peripheral surface of the heat-sealing roll main body via a taper ring. Cylinder on the boss
By fixing a tapered thin portion comprising a shape reduced in diameter, vertically to the longitudinal heat sealing roll body relative to the axis of the longitudinal heat sealing roll body by improving the concentricity an attachment position of the vertical heat-sealed portion The heat seal portion can be fixed, whereby the clearance between the paired vertical heat seal portions can be kept constant, and the degree of sealing by applying heat to the film by pressing can be kept constant.
And an annular tapered wall having a cylindrical shape
The heat source from the vertical heat seal roll body is
It is possible to conduct heat evenly to the heat seal part.
To improve the sealing condition at the vertical sealing points.
This allows the vertical heat seal to be continuous
It can be easily moved and adjusted according to the width dimension of the packaging bag.
There is an effect that can be.

[Brief description of the drawings]

FIG. 1 is a front view of a filling and packaging machine showing a first embodiment of the present invention.

FIG. 2 is a plan view showing a part of a vertical seal mechanism according to a first embodiment of the present invention in a cross section.

FIG. 3 is a front view of a main part of a vertical seal mechanism according to the first embodiment of the present invention, in which a part of the vertical seal mechanism is shown in cross section.

FIG. 4 is a front view of a main part of a vertical sealing mechanism according to a second embodiment of the present invention, in which a part of the vertical sealing mechanism is shown in cross section.

FIG. 5 is a front view of a filling and packaging machine showing a conventional example.

FIG. 6 is a perspective view of a conventional three-side sealed packaging bag.

FIG. 7 is a perspective view of a packaging bag with a four-sided seal applied to the conventional and the present invention.

FIG. 8 is a perspective view of a packaging bag for forming a film from two sheets and sealing the film, which is applied in the related art and the present invention.

FIG. 9 is a perspective view showing a packaging bag made in two columns in a conventional manner and applied to the present invention.

FIG. 10 is a front view of a main part in which a part of a vertical sealing mechanism showing an example of a conventional example is shown in a cross section.

[Explanation of symbols]

 1 Machine stand 14 Film turn-back part 16 Guide rod 17 Filling mechanism 18, 18A nozzle 19 Vertical seal mechanism 20, 21, Horizontal seal mechanism 25 Vertical heat seal roll body 31 Fixed nut 30, 33 Vertical heat seal part 34 Boss part 35 Tapered surface 36 Annular groove part 37 Tapered thin part 38 Bolt mounting hole 38A Screw part 39 Taper ring 40 Bolt insertion hole 40A Screw part 41 Tightening bolt 41A Screw part R Film rewind F Film FH, FH1, FH2 Vertical seal point FS Horizontal seal point W , W1, W2 Contents P Sachet H Heater

Claims (1)

(57) [Claims] 1. A continuously-sealed film is vertically sealed by a vertical sealing mechanism to form a film into a tubular shape, and a horizontal sealing mechanism is horizontally sealed to form a bottom portion that becomes a packaging bag. In a filling and packaging machine, the contents are filled in the formed film, and the portion on the bag mouth side of the film is further horizontally sealed by a horizontal sealing mechanism while the film is further fed and continuously packed as small bags. The mechanism includes a pair of rotatable vertical heat seal roll bodies with built-in heaters, and a vertical heat seal roll body .
To be adjustable with respect to the
When the mounting hole to insert the heat seal roll is formed
In particular, a boss portion provided with a vertical heat seal portion protruding in a flange shape on the outer peripheral portion, an annular groove portion having a tapered surface on the inside on a side surface of the boss portion, and provided on the mounting hole side by the annular groove portion. An annular tapered thin portion having a cylindrical shape, a tapered ring fitted and arranged in the annular groove, an appropriate number of bolt insertion holes provided in the thickness direction of the tapered ring, and Correspondingly, a bolt mounting hole provided in the thickness direction of the boss portion from the deepest portion of the annular groove portion of the boss portion, and inserted into the bolt mounting hole and the bolt insertion hole and tightened. a tightening bolt for diameter fixing the tapered thin portion consisting of a cylindrical shape in the longitudinal heat sealing roll body side by press-fitting the ring in the axial direction of the longitudinal heat sealing roll body, consisting of the filling and packaging Heat-sealing device in.