JPH054608A - Vertical type packing machine for making and filling bag - Google Patents

Abstract

PURPOSE:To make available a vertical type packing machine for making and filling a bag which makes it possible to form a good vertical seal patterned after that of an envelope in a method wherein a film for bags is continuously fed, to join the two fringes of the film evenly and tightly, and, moreover, to seal up the vertical joint by applying a sealing tape to the inner side. CONSTITUTION:The joint of the two ends of a bag-forming film W is pressed between a bowlike curved strap-type flat spring 6 for pressing the film tight, provided in a filling cylinder 1 working in the manner of letting the product fall, on one side and a vertical heater 4 combined with film-pressing plates 5 provided to a vertical heater-supporting arm 3 on the other side. The joint of the two fringes of the bag-forming film W, brought close to the lower part of the vertical heater 4, is pressed under pressure from a rotating film-pressing forwarding roll 7 and rolling traveling rollers 8. By adjusting the position of the vertical heater-supporting arm 3 and the curvature of the film-pressing strap type flat spring 6 the girth of the filling cylinder 1 can virtually be adjusted on a minute scale and the length of a portion of the bag-forming film W brought in contact with the vertical heater 4 can be adjusted appropriately on a minute scale. Therefore, to suit the kind of the bag-forming film in use and according to changes of the forwarding rate, the temperature for heat-melting at the vertical heater can be changed and controlled appropriately.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a product drop-filling cylinder, in which both edges of a bag film are overlapped on the front side of the product drop-filling cylinder, and the bag film is continuously fed to form an envelope-attached vertical seal. The vertical bag-filling and packaging machine that can perform vertical sealing of the sealing tape-sealing type by stacking the sealing tape on the inner side by abutting both edges of the bag film on the front side of the Substantially fine adjustment is possible and the contact length of the bag film with the vertical heater can be finely adjusted, and the welding temperature in the vertical heater can be appropriately adjusted and managed according to the type of bag film and the difference in the feed rate. The present invention relates to a vertical bag-making filling and packaging machine equipped with an envelope-pasted vertical heater device.

[0002]

2. Description of the Related Art In a conventional vertical bag-making filling and packaging machine, an envelope-attached vertical seal can be carried out by intermittently feeding a film for a bag, and cannot be continuously fed. Further, it was not possible at all to perform vertical sealing with a sealing tape. As a document related to the technique of performing vertical sealing of a sealing tape-sealed type, there is JP-A-49-118595, but it has not been put into practical use due to the drawback that good packaging cannot be performed.

In the conventional vertical bag-making filling and packaging method for performing envelope-sealing type vertical sealing, a continuous bag-forming film is passed between a bag-making device and a product dropping filling cylinder, and the bag-making film is bent by the bending action of the bag-making device. To wrap the product dropping and filling cylinder, and stack both edges of the bag film on the front side of the product dropping and filling cylinder by the vertical seal allowance, and prepare for a vertical heater support arm that can approach and separate from the product dropping and filling cylinder. With the rod-shaped vertical heater, the two edges of the bag film are welded to form an envelope-sealing type vertical seal to form a packaging cylinder, which is fed downward, and the product dropping and filling cylinder is passed through the packaging cylinder to feed a predetermined amount of the product. The package is dropped and filled, and the required lower part and the required upper part of the package in the packaging cylinder are horizontally sealed, and a vertical heater (bar-shaped heater) is separated from the product dropping and filling cylinder by an air cylinder. To alternately feed the bag film by one bag pitch, and heat seal the overlap of the edges of the bag film by pressing the envelope pasting vertical heater against the product dropping and filling cylinder. there were.

[0004]

As described above, conventionally, since the bag film is intermittently fed, vibration and noise are large, and it is not possible to increase the feeding speed of the bag film. For this reason, it is desired to provide a technique capable of continuously feeding the bag film and performing an envelope-attached vertical seal.

In the conventional vertical bag-making filling and packaging machine, the reason why the bag film could not be continuously fed and packaged is that the vertical bag-making filling and packaging machine mainly packs bulk materials. The metering machine before its appearance had a very low metering capacity, and in addition, the metering was frequently paused 5 or 6 times per minute. For this reason, the vertical bag-making filling and packaging machine has a low packaging capacity, and the metering supply is frequently stopped. On the other hand,
When there is a suspension of metering supply, the operation technology has not been established to stop the film feed and avoid the generation of waste paper. For this reason, it is necessary to avoid the waste of paper by not feeding the film when there is a pause in the metering supply by intermittent feeding of the bag film instead of continuous feeding. Since the bag width is large in the vertical bag-making filling and packaging machine, if the rotary cutter is adopted as the horizontal sealing means, the rotary cutter has to be extremely large. Therefore, the rotary cutter has not been adopted. And
Since the conventional horizontal sealing means is to open and close a pair of rod-shaped heaters by an air cylinder, it is difficult to operate unless the bag film is intermittently fed. That is the point.

[0006] On the other hand, at present, there is provided a high-performance metering machine having a sufficiently high metering supply capability and greatly reducing the metering suspension, and when there is a metering suspension, the film feeding is performed. Driving technology has been established to stop and prevent the generation of waste paper. In addition, the technology of a box motion type horizontal sealing means driven by a servo motor, which is practically used in a horizontal bag-making filling and packaging machine (for example, Japanese Patent No. 1559789; Japanese Patent Publication No. 1-46374, Japanese Patent Application No. 1-248629). Technology that can be used for vertical bag-filling and packaging machines has been established.

In the conventional vertical bag-making filling and packaging machine,
In addition to the above reasons, the reason why the envelope sticking type vertical seal could not be performed by continuously feeding the bag film was
Even if you press the heat seal bar for vertical seal against the product drop filling cylinder and slide the film for bag to perform vertical seal,
It is difficult to keep the contact surfaces of the heat seal bar and the product dropping and filling cylinder parallel to each other with high accuracy and to obtain precise surface contact. In addition, the vertical seal may be defective due to insufficient heat or the bag film may not be fed due to the inability to obtain an appropriate clamping force. Even if the vertical sealing heat seal bar is pressed against the product drop filling cylinder and the bag film is slid to perform vertical sealing, it is necessary to have a technique for avoiding the generation of waste paper. That is the point.

[0008] In the technique for performing vertical sealing of the sealing tape with the sealing tape of JP-A-49-118595, it is not possible to adjust the two edges of the bag film to fit each other without a gap, so that both edges of the bag film are separated. It is inevitable that they will end up or overlap.

The present inventors set a development target of a vertical bag-filling and packaging machine capable of continuously feeding a bag film and performing vertical sealing of an envelope-attached type and a seal tape-attached type and having a waste paper prevention function. In the course of completing the present invention, the following thought and error were made.

First, we considered using a roll heater as the vertical heater. As a result, when the envelope was stuck with the roll heater, the heat transfer amount was insufficient and a sealing failure occurred.
This is because the vertical bag-making filling and packaging machine requires a thicker film and higher sealing strength than the horizontal bag-making filling and packaging machine. Next, with reference to JP-A-49-118595, it was considered to employ a rod-shaped heater as a vertical heater and slide a moving bag film between it and a product dropping / filling cylinder (Japanese Patent Application No. 2-2980). -151112). As a result of the trial run of the prototype, the rod-shaped heater does not come into contact with the moving bag film over the entire length and is unevenly contacted, resulting in poor sealing and a long distance between the moving rod film and the product dropping and filling cylinder. It is extremely difficult to hold the parallelism with high precision and to squeeze in a good close contact state. If the heater temperature is too high, the bag film sealing surface will be distorted, while if the heater temperature is low, either the seal will be incomplete or the bag film feeding speed must be reduced. It is not possible to fine-tune the amount of heat transfer depending on the type of film for bag by itself. Fine adjustment of the film holding pressure between the vertical heater and the product dropping filling cylinder is not possible at all, and the holding pressure is inevitably biased to either too high or too low, so the bag film can slide smoothly. If it is impossible to maintain and the film clamping force is large, the bag film cannot be fed. It was found that when the rod-shaped heater was separated from the bag film when the bag film feed was stopped, the mating portions of both edges of the bag film were opened.

The present invention has been devised in view of the above-mentioned points. It is possible to substantially finely adjust the outer circumference of the product dropping and filling cylinder and to appropriately finely adjust the contact length of the bag film with the vertical heater. Equipped with a vertical heater device that can appropriately change and control the welding temperature in the vertical heater in response to changes in the bag film type and feed speed, and continuously feeds the bag film to perform envelope-shaped vertical seals well. (EN) Provided is a vertical bag-filling and packaging machine capable of tightly abutting both edges of a film for a bag without a gap and stacking a sealing tape on the inside to perform a sealing tape-sealing type vertical seal. It is an object.

[0012]

According to the present invention, as means for solving the above-mentioned problems, a continuous bag film W is passed between the bag making device 2 and the product drop filling cylinder 1 to make the bag making device 2. The bag film W is bent into a cylinder by the folding action of the above to wrap the product drop-filling cylinder 1, and both edges of the bag film W are overlapped on the front side of the product drop-filling cylinder 1 by a vertical seal margin.
A vertical heater support arm that is butted and has a required width seam sealing tape T of which both sides are heat-fusible is introduced from the front side of the bag making machine 2 inside the butted portion, and can be approached and separated from the product drop filling cylinder 1. 3. A rod-shaped vertical heater 4 provided in 3 welds both edges of the film W for bag to form an envelope-attached type or a seal tape-attached type vertical seal, and feeds out below the product drop-filling cylinder 1. A predetermined amount of the article to be packaged is dropped and filled through the product drop filling tube 1 into the packaging cylinder H, and the required lower side and the required upper side of the packaged vessel H are laterally sealed. In a vertical bag-making filling and packaging machine, a film pressing plate 5 is provided on the vertical heater support arm 3 so as to be located on both the left and right sides of the vertical heater 4, and a product drop filling cylinder is provided by the film pressing plate 5. Of the film film W for the bag on the front side is pressed against the product dropping and filling cylinder 1 side, and is attached to the front side of the product dropping and filling cylinder 1 and is curved in a bow shape and the curvature of which can be freely adjusted. Spring 6
Then, the bag-shaped film W is received so that the bow-shaped top portion of the bag film W is flattened between the film pressing plate 5 and the film pressing plate 5 by sandwiching the vicinity of both sides. The vertical heater 4 adjustably attached to the vertical heater support arm 3 is closely attached to the mating portion of the bag film W sandwiched between the film crimping strip springs 6 so that the vertical heater 4 can be separated and driven instantly when the film feeding is stopped. Then, the film is heated for vertical sealing, and both edges of the combined portion of the bag film W near the lower side of the vertical heater 4 are connected to the vertical heater support arm 3.
A vertical type characterized in that it is configured to complete a vertical seal by rolling with a film pressure-feeding roll 7 that is provided in a rotary drive and a floating roller 8 that is attached to the front side of the product drop filling cylinder 1. Provided is a bag-making filling and packaging machine.

[0013]

The continuous film W for bag is passed between the bag-making device 2 and the product dropping and filling cylinder 1, and the bag-making film W is folded into a cylinder by the folding action of the bag-making device 2 to wrap the product dropping and filling cylinder 1. Then, when carrying out the packaging in which the envelope sticking type vertical seal is performed, both edges of the bag film W are overlapped by the vertical seal allowance on the front side of the product drop filling cylinder 1. Further, when packaging is performed by applying a vertical seal in the form of a seal tape, the both sides of the bag film W are abutted with each other on the front side of the product dropping and filling cylinder 1 and the required width of which both sides are heat-soluble inside the abutting portion. The seam sealing tape T is introduced from the front side of the bag making device 2. Subsequently, the vertical heater support arm 3 is brought close to the product drop filling cylinder 1. Then, the film pressing plate 5 suppresses the vicinity of both sides of the overlapping portion of both ends of the bag film W toward the product dropping and filling cylinder 1 side, and the arched top of the film pressing strip spring 6 abuts on the film pressing plate 5. And flattened, and a film clamping force is generated. Further, when the vertical heater support arm 3 is brought close to the product drop filling cylinder 1, the film pressure feed roll 7 cooperates with the floating roller 8 to sandwich the film W for bag. In this case, after adjusting the curvature of the bow of the film pressing strip spring 6 and adjusting the vertical heater support arm 3 close to the product drop filling cylinder 1,
The pressing of the vertical heater 4 against the film pressing strip spring 6 is adjusted. In the case of performing a vertical seal of the sealing tape pasting type, the distance between the film pressing plate 5 and the film pressure strip belt spring 6 on the film pressing surface from the product dropping and filling cylinder 1 is set to the both edges of the bag film W. Is finely adjusted so that the product drops and fills the front of the filling cylinder 1 closely and without a gap.
When the packaging operation is performed, the film for bag is fed, and the vertical heater 4 preheated to the required temperature presses the film crimping strip spring 6 to press the mating portions of both edges of the film for bag W, and The film pressing plate 5 lightly presses both sides of the mating portion of both edges of the bag film W, and the vertical heater 4 seals the overlapping portions of both ends of the bag film W with an envelope sticking type vertical seal or seal tape. The vertical seal of the shape will be performed. The overlapping portion of the film edges for the bag is sandwiched between the vertical heater 4 and the film crimping strip spring 6 for a certain section, and is heated to a temperature at which welding can be performed by the vertical heater 4, and sliding is performed while performing crimp sealing sufficiently. The film is sandwiched by the film pressure feed roll 7 and the floating roller 8 which are passed through and then driven to rotate, and the bag film is not caught and stopped by the pressure between the vertical heater 4 and the film pressure strip spring 6. As described above, the auxiliary feeding is performed and the pressure-bonding sealing is completely performed, so that heat sealing is performed without distortion of the sealing surface. When the vertical feeder 4 separates from the film crimping strip spring 6 in order to prevent wasted paper in response to a situation in which the object to be packaged is not supplied from the metering feeder during operation, the bag film W is fed. And the film pressing feed roll 7 stops rotating, and the film pressing plate 5 and the film pressing strip spring 6 continue to clamp both edges of the bag film W in the same state, and the film pressing strip spring 6 Since the deformation of the bow-shaped top is maintained, the mating portions at both ends of the bag film W do not become rough, and good vertical sealing is continued when the bag is restarted.

The goodness and badness of the vertical seal depends on the heat transfer amount per unit area to the bag film W by the vertical heater 4, and if the heat transfer amount is excessive, the film surface is melted and the sealing surface is damaged. If it becomes dirty, and if the heat transfer amount is insufficient, the seal will be defective. In the present invention, the amount of heat transferred to the bag film W by the vertical heater 4 is determined as a function of the type of film, the film clamping pressure, the vertical heater temperature, the film feeding speed, and the film-heater contact length. Therefore, in the present invention, in addition to adjusting the type of film, the temperature of the vertical heater, and the film feeding speed, fine adjustment of the film clamping pressure and the film-heater contact length can be performed as desired. In order to achieve good vertical sealing, it is preferable that the film pressing plate 5 and the vertical heater 4 are pressed and adjusted to the same with respect to the film pressing strip spring 6. Vertical heater 4 and strip spring 6 for film compression
The pinching pressure of the bag film W by means of assuring a uniform pinching state for the required length and at the same time ensuring the proper pinching pressure necessary for sealing, and at the same time, the bag film W is held by the vertical heater 4
It is ensured that a smooth slide is made between the strip spring 6 and the film pressing strip spring 6. When the temperature of the vertical heater 4 is too high or too low, the temperature of the vertical heater 4 is adjusted. Vertical heater 4
When the temperature is appropriate but the pressure-bonding seal is not sufficient, the fine adjustment movement of the double bracket 10 toward the product drop filling cylinder 1 is performed. Then, the length of the linear contact portion between the vertical heater 4 and the film crimping strip spring 6 becomes large, and the heating and welding time can be delicately lengthened. Moreover, since the clamping pressure increases, the crimping seal is completely completed. Done. Further, when the temperature of the vertical heater 4 is appropriate but the pressure seal is excessively performed, the product drop filling cylinder 1 of the double bracket 10
When the fine adjustment movement is performed in a direction away from, the length of the linear contact portion between the vertical heater 4 and the film pressing strip spring 6 becomes small, the heating and welding time is slightly shortened, and the clamping pressure is reduced. Since the rolling pressures of the feed roll 7 and the floating roller 8 do not fluctuate, the pressure-bonding sealing is performed well.

[0015]

Embodiments of the vertical bag-making filling and packaging machine according to the present invention will be described below with reference to the drawings. The vertical bag-making filling and packaging machine according to the present invention is capable of both envelope-sealing type vertical sealing and sealing-tape-sealing type vertical-sealing packaging. It shows that the packaging is performed by applying a vertical sticker.

The strip-shaped bag film W, which is the paper to be wrapped, is bent into a cylindrical shape so as to wrap the product dropping and filling cylinder 1 by the bag making device 2, and is guided downward by the film feed belt device 11. There is. Then, the film W for bag is closely butted at both edges in front of the film pressing strip spring 6 provided on the front side of the product dropping and filling cylinder 1 and both sides are heat-fusible inside the butted portion. A seam sealing tape T having a required width is introduced from the front side of the bag making machine 2. The seam sealing tape T
Is a guide roll 35, 3 fed from a tape roll R attached to a holder shaft 34 provided on the front side of the bag making machine 2.
It is wound around 6, 37 and introduced from the front side of the bag making device 2. The film pressing plate 5 provided on the vertical heater support arm 3 presses both edges of the bag film W and the tape T for seam sealing against the strip spring 6 for film pressure bonding. The adjustable rod-shaped vertical heater 4 presses both edges of the film W for bags and the tape T for seam sealing to the film crimping band springs 6 during operation to heat them and form a vertical tape seal sticking type seal. I am supposed to do it. Further, in the vicinity of the lower side of the vertical heater 4, there are a film pressure feed roll 7 provided in the vertical heater support arm 3 and driven to rotate, and a floating roller 8 attached to the front side of the product drop filling cylinder 1.
The film crimping feed roll 7 and the floating roller 8 are adapted to roll both edges of the bag film W and the seam sealing tape T to provide auxiliary feeding and perform crimp sealing.
Then, the film crimping feed roll 7 provided on the machine rear side of the product dropping and filling cylinder 1 moves downward the packaging cylinder H formed by sealing the bag film W on both edges with the joint sealing tape T. In addition to feeding out, a predetermined amount of the article to be packaged is dropped and filled through the product dropping / filling tube 1 into the packaging tube H, and a horizontal sealing / cutting device (not shown) is provided below the required amount of the article to be packaged in the packaging tube H. The required upper parts are laterally sealed. As the seam sealing tape T, it is preferable to use one having the same heat shrinkage rate as the bag film W. Packaging tape for seam sealing T
To be able to tear in a straight line at
Seam sealing tape T A tape main body made of a heat-resistant film that has a lower tear strength than the film W for bags and tears in a substantially straight line in the longitudinal direction is laminated with a thermoplastic film such as polyethylene. Good to do.

An upper end of the product dropping and filling cylinder 1 is connected to a hopper, a rotary kiln or the like (not shown), and a predetermined amount of articles to be packaged are intermittently dropped and supplied. The bag making machine 2 surrounds the upper part of the product dropping and filling cylinder 1 with a gap of 2 to 3 mm evenly secured around the upper part of the product dropping and filling cylinder 1. The product dropping and filling cylinder 1 is guided to the inclined surface 2a so as to be located on the inner side of the collar edge facing the product dropping and filling cylinder 1, and the bag dropping film W is guided so as to be wrapped. On the front side of the vertical slit on the front side of the bag making machine 2, a bag film edge collar collar fitting 12 for laminating the bag film edges in a collar shape is provided.

The vertical heater support arm 3 is originally designed to approach and move away from and adjust the product dropping and filling cylinder 1.
The vertical heater support arm 3 is pivotally supported by a housing 14 fixed to a left side panel 13 constituting a machine frame at the front end of a slider 15 which can slide in the machine front-rear direction, and by loosening a lock bolt 16. It can be horizontally pivoted and opened to the left side on the front side of the product drop filling cylinder 1.
The slider 15 pivotally supports a slide shaft 17 having a threaded portion 17a inserted therein, loosens a lock bolt 18 that can lock the slide shaft 17, and
By turning the knob 19 fixed to the front end of the slide nut 17, the nut runner 21 with the slits is screwed into the threaded portion 17a of the slide shaft 17 and can be tightened from the outside of the housing. You can adjust the movement. The nut runner 21 is slidably fitted in the internal space 14a of the housing 14. Therefore, when the lock bolt 18 is tightened, the slider 15 cannot slide, and when the lock bolt 18 is loosened, the nut runner 21 is moved to the inner space 1 of the housing 14.
4a is slidable, and the slider 15 is pulled out or pushed in by the stroke of the nut runner 21. It should be noted that the vertical heater support arm 3 only needs to be linearly movable toward and away from the product dropping and filling cylinder 1.

The vertical heater 4 is the vertical heater support arm 3
Is a rod-shaped heater which is attached to a required double bracket 10 provided on the front side of the product dropping and filling cylinder 1 and faces both edges of the film which are overlapped in the front-rear direction and which is vertically long. The compound bracket 10 is guided by a main bracket 10a whose position can be finely adjusted with respect to the vertical heater support arm 3 by tightening adjustment of an adjusting bolt 10e, a guide means 10b provided by the main bracket 10a, and a product drop filling by a spring 10d. Vertical heater 4 is urged toward cylinder 1
And a sub-bracket 10c for supporting the sub-bracket 10c. The sub-bracket 10c is configured to be able to approach and separate from the product drop filling cylinder 1 by a cam 9a fixed to an output shaft of an actuator 9 attached to the main bracket 10a. ing. When the film feed for the bag is started, the actuator 9 rotates the cam 9a by 180 ° to bring the sub-bracket 10c closer to the product dropping and filling cylinder 1 in cooperation with the spring 10d, and causes the vertical heater 4 to move the film crimping strip. When the film feed for the bag is stopped, the cam 9a is further rotated by 180 ° to separate the sub bracket 10c from the product dropping and filling cylinder 1,
The vertical heater 4 is separated from the film pressing strip spring 6. The film pressing plate 5 is supported by the vertical heater support arm 3 and presses both edges of the bag film W against the film pressing strip spring 6. The film holding plate 5 has a rectangular slit and a vertical heater 4
Both edges of the bag film W are pressed against the film crimping strip springs 6 on both sides of the vertical heater 4.

As the film crimping strip spring 6, a strip spring made of stainless steel or a strip steel strip made of spring steel coated with fluororesin or Teflon resin is used.
The film crimping strip spring 6 is fixed by a strip spring mounting member 22 fitted in a vertically elongated groove 1a formed in the product drop filling cylinder 1 and having upper and lower ends fixed with screws. The strip spring attaching device 22 holds the lower end of the film crimping strip spring 6 in the insertion hole 22a provided in the lower portion, and bends the middle of the film crimping strip spring 6 in an arc shape to press the film. A screw 23 is screwed into and fixed to a long hole formed at the upper end of the strip spring 6 for use in the film, and the curvature of the strip spring 6 for film pressure bonding can be adjusted in an arc shape. Three floating rollers 8 are provided below the strip spring attachment 22.

The film pressure-feeding roll 7 is a urethane rubber roll, and is pivotally supported by the vertical heater support arm 3 in the vicinity of the lower side of the vertical heater 4, and has a small rope wheel 24a, a large rope wheel 24b, and an endless rope 24c. It is connected to a transmission shaft 25 provided on the vertical heater support arm 3 via a winding device 24 composed of, and if the position adjustment of the slider 15 is performed as required, the floating roller is closed when the vertical heater support arm 3 is closed. 8 can be rolled. The adjustment of the rolling pressure between the film pressure feed roll 7 and the floating roller 8 is performed by fine adjustment movement of the slider 15, but it is preferable that the film pressure feed roll 7 can be shifted. The structure in which the film pressure-feeding roll 7 and the floating roller 8 are compressed is that the bag film auxiliary feed is performed to prevent the bag film W from flowing at the vertical heater 4 and the vertical heater 4 is used. This is because the incompletely welded state, which is heated to the welding temperature, is completely welded and sealed by adding the rolling force. Then, the transmission shaft 25 is connected to a drive source (not shown) through the meshing of a slave gear 26a provided near the arm base end of the transmission shaft 25 and an original gear 26b provided on the slider 15. It is connected to the winding transmission device 27. The winding transmission device 27 is provided on the left side panel 13 and is driven to rotate by a winding vehicle (sprocket) 2
7a, a winding follower wheel (sprocket) 27b provided on the slider 15 and capable of transmitting power to the original gear 26b, and a bending intermediate winding wheel (sprocket) 27c provided on the left side panel 13 and the slider 15, respectively. 27
d, a winding intermediate sheave (sprocket) 27e provided on the left side panel 13, and an endless chain 27f wound around these intermediate sheaves. The slider 15 has a diameter equal to that of the product dropping and filling cylinder 1. Accordingly, no matter how the position is adjusted, the endless chain 27f does not loosen and power can be transmitted to the original gear 26b. Therefore, if the vertical heater support arm 3 is closed and the slider 15 is pushed in from the state where the slider 15 is pulled out and the vertical heater support arm 3 is opened, the engagement between the slave gear 26a and the original gear 26b is ensured, and the film pressure feed is performed. The roll 7 contacts the floating roller 8. The film pressure feed roll 7 is
It may be rotationally driven by a servo motor.

The film pressing plate 5 is a substantially rectangular plate having a vertical slit 5a fixed to the end of the vertical heater support arm 3 facing the product dropping and filling cylinder. From the vertical slit 5a, the vertical heater 4 and the film pressure feed roll 7 are provided. The peripheral portion of the bag film W around the vertical heater 4 is pressed toward the product drop filling cylinder 1 side.

The bag film feed belt device 11 includes upper and lower toothed wheels 11a and 11b, a toothed wheel 11c located in the middle of the rear part, a vacuum box 11d, and a toothed endless belt having a large number of intake holes all around. 11e and a casing 11f, which is supported by a movable table 30 provided in a drive transmission system accommodating chamber 29 via a cylindrical cantilever arm 28, and the transmission shaft 3 passed through the cantilever arm 28.
1 and the toothed wheel 11c are connected, and the toothed endless belt 11
e continuously feeds the bag film W while suctioning and holding the rear surface side portion of the product film drop filling cylinder 1 of the bag film W. The movable table 30 can be moved and adjusted in the front-rear direction of the machine via a screw shaft 34 by turning a handle 32 provided on the front part of the machine-side surface of the left side panel 13. The transmission shaft 31 is
A sprocket 33a fixed to the shaft end of the transmission shaft 31 that projects into the drive transmission system accommodation chamber 29 and the sprocket 33.
It is connected to a drive source through a chain that is wound around a and that is wound so as not to loosen even when the movable table 30 is moved and adjusted. As described above, the bag film feed belt device 11 has the cantilever structure because
This is to make the rear part of the room simple and secure a large space for easy cleaning.

Next, the operation of the embodiment configured as described above will be described. As an initial setting, after loosening the lock bolt 20 to release the tightening and fixing of the nut runner 21 to the threaded portion 17a, the vertical heater support arm 3 is attached to the slider 1.
5. Close and fix it so that it is at a right angle to 5, and turn the knob 19 to pull the nut runner 21 toward the front side of the machine to the stop end, loosen the lock bolt 18, and carefully slide the slider 15 into the housing 14. Then, the film pressure feed roll 7 is brought into contact with the floating roller 8 on the front side of the product drop filling cylinder 1, and the closed position of the vertical heater support arm 3 where the auxiliary film feed for the bag can be favorably performed is determined. Further, the actuator 9 is operated to move the vertical heater 4 which has not been preheated yet in a direction approaching the product dropping and filling cylinder 1 and brought into contact with the film pressing strip spring 6,
Moreover, the position of the main bracket 10a is finely adjusted to adjust the contact length of the film crimping strip spring 6 to the vertical heater 4 to an appropriate size, and the clamping pressure to the bag film is also adjusted to an appropriate size. To do. After that, the actuator 9 is re-activated to separate the vertical heater 4 from the product drop filling cylinder 1.

Then, the lock bolt 18 is tightened to fix the slider 15, the knob 19 is rotated in the opposite direction to the state where the nut runner 21 is retracted to the rear side of the machine to the stop end, and the lock bolt 20 is tightened. The nut runner 21 is tightened and fixed to the thread portion 17a of the nut runner 21, and the lock bolt 18 is loosened until the nut runner 21 contacts the stop end toward the front side of the machine.
After pulling out 5 and moving, the lock bolt 16 is loosened and the vertical heater support arm 3 is opened.

In this state, the tape T for seam sealing having a required width is fed out from the tape roll R attached to the holder shaft 34 provided on the front side of the bag making machine 2 to guide the guide roll 3
5, 36, 37 and is introduced from the front side of the bag making device 2 and passed through the front side of the film crimping strip spring 6,
The bag film W is hung on the bag making machine 2 and passed through the product dropping and filling cylinder 1 so as to wrap it, and both edges of the bag film W are overlapped by a required size on the front side of the bag making machine 2 to press the film spring 6
When it is passed through the front side of the film-pressing strip spring 6, the bow-shaped top of the strip-shaped plate spring 6 is separated from the product dropping and filling cylinder 1 by a required dimension, so that the overlapping of both edges of the bag film W is eliminated and the bags W are brought into a state of being butt-joined. Become. When the vertical heater support arm 3 is closed, the lock bolt 16 is tightened, the slider 15 is pushed in and moved, and then the lock bolt 18 is tightened, the film pressing plate 5 flattens the arched top of the film pressing strip spring 6. In addition to pressing, the film crimping feed roll 7 and the floating roller 8 are in a pressing state capable of performing good bag film auxiliary feed, and both edges of the bag film W and the tape T for joint sealing are used for film pressing plate 5 and film crimping. It is appropriately pressed by the strip spring 6, and is appropriately pressed by the film pressure feed roll 7 and the floating roller 8. Therefore, the vertical heater 4 is energized and the packaging operation is started after a required time has passed.

Then, the bag film feed belt device 11
Continuously feeds the film W for bags, and the actuator 9 is operated to cause the vertical heater 4 to slide-contact the strip spring 6 for film crimping with an appropriate pressure, and the film crimping feed roll 7
And the floating roller 8 performs the film auxiliary feed for the bag. Both edges of the film W for bags and the tape T for seam sealing are slid while being sandwiched between the rod-shaped vertical heater 4 and the film pressing strip spring 6 to be heat-transferred and welded. Near the lower side, the film crimping feed roll 7 and the floating roller 8 are crimped and sealed while the bag film W is supplementally fed. Then, both edges of the film W for bags are subjected to a vertical seal of a stitching type with the tape T for seam sealing at the both edges to be turned into a packaging cylinder H, which is fed out downward, and a predetermined amount of articles to be packaged is passed through the product drop filling cylinder 1. Drop filling is performed at predetermined time intervals, and a horizontal sealing / cutting device (not shown) laterally seals the required lower portion and the required upper portion of the packaged container H, respectively. If the temperature of the vertical heater 4 is too high or too low, the temperature of the vertical heater 4 is adjusted. However, adjusting the temperature of the vertical heater 4 does not adjust the heating time. Therefore, when the temperature of the vertical heater 4 is appropriate but the heating time is short and the welding temperature does not reach the pressure bonding seal, the double bracket 10 is finely adjusted and moved toward the product drop filling cylinder 1 to vertically When the length of the linear contact portion between the heater 4 and the film pressing strip spring 6 is increased, the heating time can be lengthened subtly and proportionally, and depending on the thickness and type of the bag film. It is possible to heat to a corresponding welding temperature, and moreover, it is possible to increase the clamping pressure to increase the pressure delicately and proportionally, and to perform good welding sealing. Further, when the temperature of the vertical heater 4 is proper but the welding seal is excessively performed, the double bracket 10 is finely adjusted and moved in a direction away from the product drop filling cylinder 1, and the vertical heater 4 and the film pressure bonding strip are moved. When the length of the linear contact portion of the leaf spring 6 is reduced, the heating time can be substantially delicately and proportionally shortened, and the welding temperature is delicately corresponding to the thickness and type of the bag film. Although the clamping pressure is weakened, the rolling pressure of the film pressure-feeding roll 7 and the floating roller 8 does not fluctuate, so that the welding and sealing can be satisfactorily performed.

[0028]

As described above, in the vertical bag-making filling and packaging machine of the present invention, the vertical heater and the bow-shaped film crimping of the joining portion (and the seal tape for the joint) of both edges of the bag film are curved. Since the structure is such that it can be clamped with the strip spring for position adjustment and clamping pressure adjustment, the temperature of the vertical heater can be maintained at an appropriate temperature and the heating time can be adjusted subtly and proportionally without changing the temperature. The welding temperature in the vertical heater can be properly controlled, and adjustments can be made even if the type and feeding speed of the bag film are different, and the bag film is continuously fed to form an envelope-sealed vertical seal. It can satisfactorily perform vertical packaging with seal tape pasting type, and realizes silent high-speed operation.

In the vertical bag-making filling and packaging machine of the present invention, the joining portion of both edges of the bag film (and the seal tape for the joint) is provided with the vertical heater, the film pressing plate, and the ribbon-shaped film crimping strip. It is configured to be double clamped in the substantially same clamping state with the leaf spring, and the separation distance from the product drop filling cylinder to the film clamping surface can be finely adjusted,
Even if the vertical heater leaves the contact with the film crimping strip spring, the film pressing plate and the film crimping strip spring continue to clamp the packaging film (and the seam sealing tape) in the same state as during operation for film crimping. Since the flatness of the bowed top of the strip spring is maintained as it is, when packaging with an envelope-attached vertical seal, the bag width can be adjusted by adjusting the separation distance from the product drop filling cylinder to the film clamping surface. When a slight adjustment is made, the matching part of both edges of the bag film is not disturbed, and the waste paper can be avoided and the packaging operation can be performed. By adjusting the separation distance from the product drop filling cylinder to the film clamping surface, it is possible to achieve a vertical seal in which both edges of the bag film can be abutted exactly without a gap, and both edges of the bag film can be aligned. Minute is not disturbed, it is the packaging operation that can avoid the generation of waste paper.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional side view of essential parts of a vertical bag-making filling and packaging machine according to an embodiment of the present invention.

FIG. 2 is a horizontal sectional view of a main part of the vertical bag-making filling and packaging machine.

3 is a sectional view taken along line III-III in FIG.

[Explanation of symbols]

 W Film for bag H Packaging cylinder T Seal tape for seam 1 Product drop filling cylinder 2 Bag making machine 3 Vertical heater support arm 4 Vertical heater 5 Film pressing plate 6 Film crimping band spring 7 Film crimping feed roll 8 Floating roller

Claims (1)

Claims: 1. A continuous bag film is passed between the bag-making device and the product dropping and filling cylinder, and the bag film is bent into a cylinder by the bending action of the bag-making device to form the product dropping and filling cylinder. Wrapping, product dropping Both sides of the bag film on the front side of the filling cylinder are overlapped by a vertical sealing margin, or a seam sealing tape of a required width that is butted and heat-soluble on both sides is provided inside the butted portion. Introduced from the front side of the container, the rod-shaped vertical heater provided on the vertical heater support arm that can be moved closer to and away from the product dropping and filling cylinder, welds both edges of the bag film to form an envelope or seal tape. A sticking type vertical seal is applied and the product is dropped below the product dropping and filling cylinder, and a predetermined amount of the object to be packed is dropped and filled through the product dropping and filling cylinder. In a vertical bag-making filling and packaging machine configured to horizontally seal one side and a required upper side, the vertical heater support arm is provided with a film pressing plate so as to be positioned on both left and right sides of the vertical heater, and the film pressing plate. By pressing both sides of the mating part of the bag film on the front side of the product dropping and filling cylinder to the side of the product dropping and filling cylinder, and for crimping a curved and freely adjustable curve attached to the front side of the product dropping and filling cylinder The strip-shaped spring is adapted to receive the film pressing plate so that the bow-shaped top portion of the bag film is sandwiched in the vicinity of both sides of the mating portion of the bag film so as to be in a flat state. The vertical heater support arm is adjustably attached to the mating portion of the bag film sandwiched between the film crimping band springs. When the vertical heater stops feeding the film, it instantly separates and drives freely, and heats the film for vertical sealing. A vertical pressure roller is provided on a vertical heater support arm and is driven to rotate, and a floating roller attached to the front side of the product dropping and filling cylinder is rolled to complete a vertical seal. Vertical bag-making filling and packaging machine.