JPH04126228A - Film delivering device of horizontal production machine for packaging body with fastener - Google Patents

Abstract

PURPOSE:To realize stable and favorable delivering of film with fastener from a film roll by a method wherein a position detector for detecting the position of the edge of film is provided so as to control the driving of a motor in response to the detection signal of the detector in order to vertically move a film roll for delivering film. CONSTITUTION:In a film delivering part 1, dancer rolls 47 rock in response to the drawing-out of film. A driving roll 44 rotatingly driven in response to the rocking width of the dancer rolls so as to draw the film from the film roll2, to which film has been traversingly wound. At this time, the position of the edge of the film is detected with a position detector 40. When the detected position of its edge is lower than the reference position, screw rods 34 and 35 are driven by a motor 38 so as to raise a vertically travelling stand 36. When the detected position of its edge is higher than the reference position, the screw rods 34 and 35 are driven reversely so as to lower the vertically travelling stand 36. Thus, even from the film roll 2, to which film has been traversingly wound, the film can be stably delivered from a certain position without developing wrinkle or the like in the film.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention provides a package with a zipper, which is provided with a synthetic resin fastener near the opening part of the package for fitting and sealing a male zipper and a female zipper. The present invention relates to a film feeding device for a horizontal package manufacturing machine for manufacturing.

<Prior art> A manufacturing machine for packaging with a zipper is equipped with a synthetic resin fastener near the unsealed part of the package to fit and seal a protruding male zipper and a female zipper. Because of this, it is used in various packaging such as food, daily necessities, and miscellaneous goods.

This type of zippered packaging manufacturing machine welds a male zipper to the back side of the upper film, welds a female zipper to the surface of the lower zipper, and transports the upper film and lower film with each zipper welded on top of each other. While transporting the packaging continuum with the packaged items placed between the upper and lower films, it passes through the fastener fitting part and engages both fasteners. A structure in which both horizontal and vertical ends of a continuous package are sealed with a sealer and each package is finally separated at the sealed portion has been proposed in Japanese Patent Application Laid-Open No. 2-9626.

<Problems to be Solved by the Invention> Incidentally, in such a zippered packaging manufacturing machine, male and female fasteners are welded to the upper film and the lower film on the device, so it is difficult to supply, position, and weld each fastener. It is necessary to install a complicated mechanism on the device for the process, and attempts have been made to weld the male and female fasteners onto the film in advance during the film manufacturing stage.

However, when a male fastener and a female fastener are welded onto a film during the film manufacturing stage, unevenness occurs on the film. The material is smoothed and wound onto a roll. For this reason, when the film is fed out from a film roll wound with such a zippered film, the film feeding position changes with each rotation of the roll, which tends to cause wrinkles in the film, making it difficult to feed the film stably. There was a problem that I couldn't do.

The present invention has been made in order to solve the above-mentioned problems, and provides a horizontal type manufacturing machine for zippered packaging bodies that can stably and efficiently feed out a film with a zipper from a film roll wound by traversing. The purpose of the present invention is to provide a film feeding device.

Means for Solving the Problems> In order to achieve the above object, the film feeding device of the horizontal type manufacturing machine for zippered packaging bodies of the present invention has a film feeding device for horizontally manufacturing a zippered package body of the present invention. This is a film feeding device for a horizontal type manufacturing machine for packaging bodies with a zipper, which pulls out a film roll that has been wound and cuts the film in the longitudinal direction, and sends out two films to a packaging process. Two threaded rods are vertically rotatably supported at intervals in the section, and a vertically movable table having threaded holes on both sides of both threaded rods screws the screw holes into both threaded rods to horizontally move the two threaded rods. A motor is installed to rotate both threaded rods, and a support shaft that rotatably supports a film roll is vertically installed on the vertical moving table, and a support shaft is installed vertically on the vertically movable table to rotate the film unwound from the film roll. A position detector is provided to detect the edge position, and a motor is driven and controlled according to the detection signal from the position detector so that the edge position of the film fed out from the film roll is at a constant position. It is configured to feed the film while moving it.

Function> When packaging is performed in the packaging process of the packaging body manufacturing machine, the film is fed out in fixed length increments, and the film is drawn out from the film feeding section accordingly.

At this time, in the film feeding section, the dance roll swings in response to the film being drawn out, and the delivery roll is driven to rotate in accordance with the width of the swing, and the film is traversed from the wound film roll. be drawn out. At this time,
The position detector detects the edge position of the film being pulled out, and if the edge position is lower than the reference position, the motor drives a threaded rod to raise the vertically movable table supporting the film roll, and the edge position When is above the reference position, the threaded rod is driven in the opposite direction to lower the vertically movable table. As a result, even if the film roll is traversed and wound, the film can be pulled out from a fixed position, and the film can be stably fed out without wrinkles or the like.

By the way, since there are convex fasteners on the film surface, when passing through a guide roll etc., it is necessary to form grooves on the roll to receive the fasteners and prevent the fasteners from being crushed. If this occurs, it cannot be applied to films of different widths.For this reason, if soft rubber rolls are used for the drive roll and multiple guide rolls in the film feeding section, the convex fastener on the film surface will not be deformed. You can send the film to.

<Example> Figure 1 shows a front view of a horizontal zippered packaging manufacturing machine.
FIG. 2 shows its plan view.

Reference numeral 1 denotes a film feeding unit that feeds out a strip-shaped film from a film roll 2. The film wound around the film roll 2 has a male fastener and a female fastener with protrusions on the top and bottom of one side. A fastener is pre-welded along the longitudinal direction.

In this way, the convex fasteners are welded to the film surface in advance, and when normally wound, the convex parts pile up and become thick and unstable, so this type of film cannot be traversed. In other words, the winding roll is wound into a roll while reciprocating in the axial direction.

The film feeding section 1 has an upper plate 3 as shown in FIG.
1 and the lower plate 32 are fixed horizontally by a plurality of pillars 33,
Two threaded rods 34 and 35 are rotatably supported vertically between the upper plate 31 and the lower plate 32. A plate-shaped vertically movable table 36, which has screw holes on both sides to be screwed into the threaded rods 34 and 35, is arranged so as to move up and down by the rotation of the threaded rod 3435. A support shaft 37 for uprightly supporting 2 is rotatably installed.

A sprocket is fixed to the lower end of the threaded rod 34, 35,
These are a motor 38 with a reducer fixed to the lower plate 32
The motor 39 rotates the two threaded rods 34 and 35, and the vertically movable table 36 moves up and down. A guide roll 39 is rotatably fitted therein, and the film pulled out from the film roll 2 is first passed over this guide roll 39 and guided.

A position detector 40 detects the position of the edge of the film pulled out from the film roll 2, and is fixed at a fixed position on the pillar 33, and photoelectrically detects whether the edge of the film is above or below a certain position. It is detected by a device or the like, and the detection signal is output to the control circuit of the motor 38.

When the edge position of the film detected by the position detector 40 is lower than the reference position, the control circuit of the motor 38 controls
The threaded rods 34.35 are rotated to the left to raise the vertically movable table 36 that supports the film roll, and when the edge position is above the reference position, the screw rods 34.35 are rotated to the right. It is configured to lower the vertically movable table 36.

Note that the film roll 2 is mounted on a support shaft 3 on a vertically moving table 36.
7 and rotates together with a support shaft 37. A braking device 41 is attached to the lower end of the support shaft 37 to brake the rotation.

Then, as shown in Fig. 2, there is an outer diameter detector that detects the outer diameter of the film roll 2 (a device that converts the angle of an arm that swings according to the outer diameter of the film roll 2 into an electrical signal using a potentiometer and outputs it. ) 42 is provided, and as the outer diameter of the film roll 2 decreases, the braking force is reduced, and the tension of the film being pulled out increases as the outer diameter of the film roll 2 decreases. It is controlled to be constant regardless of the diameter.

Reference numeral 44 denotes a drive roll for film feeding, which is installed upright between the upper plate 31 and the lower plate 32, and is rotationally driven by a motor 45.

Next to the drive roll 44 are three guide rolls 46 and two dance rolls 47 for adjusting the amount of film drawn out.
is swingably provided. The dance roll 47 is provided with a potentiometer that converts the rotation angle of its swing shaft into an electrical signal, and a signal corresponding to the swing angle that changes depending on the tension of the film is transmitted from the potentiometer to the motor 45.
output to the control circuit. When the dance roll 47 moves closer to the guide roll 46, the motor 45 is controlled to increase the speed, and when the dance roll 47 moves away from the guide roll, the motor 45 is controlled to decelerate, and the motor 45 is used in the packaging section in the subsequent stage (when the dance roll 47 is pulled out). ) The film is controlled to be drawn out from the film roll 2 according to the amount of film.

Furthermore, in the feeding section of the film feeding section 1, the center of the film having the male and female fasteners at the top and bottom is cut along the longitudinal direction, and the film having the male and female fasteners is separated vertically. For this purpose, a cutter that cuts the center of the film, a folding plate that bends the cut film vertically, and a delivery roll 48 that delivers the separated film horizontally from the top and bottom are provided. It is being

In addition, since there is a convex zipper on the film surface,
When passing through guide rolls, etc., it is necessary to form grooves on the roll to receive the fasteners so as not to crush the fasteners, but if grooves are formed at certain positions on the roll, it will not work for films of different widths. I can't, because of this.
Dance roll 47 and drive roll 4 of film feeding section 1
4. Soft rubber rolls are used for the plurality of guide rolls 39, 46 and the delivery roll 48, so as not to deform the convex fastener on the film surface.

Reference numeral 6 denotes a supply section for packaged items equipped with a product supply conveyor and a pushing cylinder, in which two films sent out from the film delivery section 1 are spaced apart by a guide roll 7.
The structure is such that the packaged items are sent between the two sheets of film sent in this way. Reference numeral 8 is a fastener fitting part located next to the packaged material supply part, and there is a male zipper and a female zipper on the inside. The film is overlapped by passing through the narrowed passage, and the male and female fasteners are fitted together.

Reference numeral 9 denotes a pre-seek disposed next to the fastener fitting part 8, in order to preliminarily seal the overlapped films, that is, the packaging continuous body 10 in the transverse direction, that is, both sides of the package.
It is constructed by providing an upper seal member having a heater and a lower seal member that are movable up and down. In the preliminary seek 9, the upper and lower sealing members are moved at a predetermined timing so as to sandwich the continuous packaging body 10, and the film is welded and sealed in the transverse direction. If the zipper part is thick and difficult to weld, ultrasonic welding is used in combination.

Reference numeral 12 denotes a first feed roll placed next to the preliminary seeker 9, which sandwiches the top and bottom edges of the vertically pre-sealed packaging continuous body 10 with rubber rolls from above and below, and rotates the rolls at a predetermined timing. The packaging continuum 10 is fed by rotating at a speed of .

Reference numeral 13 denotes a horizontal sealer disposed next to the first feed roll 12, with two pairs of sealing members (heaters) horizontally provided on both sides, and the upper and lower sealing members are attached to the top edge of the packaging continuous body 10. The bottom edge is moved up and down so as to sandwich it from above and below, and then heat welded.

14 is a vertical sealer disposed next to the horizontal sealer 13, and is configured almost the same as the preliminary seeker 9 described above, and has sealing members with heaters on the upper and lower sides, and continuously wraps the upper sealing member and the lower sealing member. Move the body 1o to sandwich the packaging continuum 1
This is a structure in which the preliminary sealed portion in 0 is actually sealed.

The preliminary seek 9, the horizontal sealer 13, and the vertical sealer 14 are linked to operate by the same vertical movement mechanism (not shown), and simultaneously move vertically to perform the sealing operation at the timing when the feeding is stopped. The positions of the horizontal sealer 13 and the vertical sealer 14 can be adjusted left and right on the main body frame by operating a handle.

15 is a punching part installed next to the vertical sealer 14;
A square hole is punched to form a notch (a cutout to make the packaging film easier to tear) at the edge of the package where it is to be opened.

Reference numeral 16 denotes an edge detector disposed next to the punching section 15 and in front of the second feed roll, which is composed of a pneumatic position sensor, and detects an edge by changing the air blowing pressure.
The top edge of the continuous packaging body 10 is detected and a detection signal thereof is output.

A second feed roll 17 is placed next to the edge detector 16, and the top edge and bottom edge of the packaging continuous body 10, whose top, bottom, and both sides are sealed, are sandwiched between rubber rolls from above and below. is driven to rotate at a predetermined timing and speed, and the continuous packaging body 10 is sent.

The second feed roll 17 is constructed by supporting both sides of an upper and lower rotating shaft via bearings, and attaching rubber rolls to the rotating shaft at positions sandwiching the top edge and bottom edge of the continuous packaging body 10. Ru. The rubber roll is provided with grooves around its periphery for receiving fasteners. The lower rotating shaft is linked to a drive motor with a reduction gear via a belt, sprocket, etc., and the upper and lower rotating shafts are linked to each other via gears.

Furthermore, the bearings on both sides that support the upper rotating shaft are arranged to be able to move slightly up and down, and on both sides, cylinders 24 and 25 are mounted downward so that the bearings are pushed downward, and the upper rubber roll 19 is pressed against the rubber roll 19 below.

27 is a cutting section provided next to the second feed roll 17;
The vertical sealer of the packaging continuous body fed out by the second feeding roll 17 is cut in the transverse direction. A delivery conveyor 28 is provided next to the cutting section and delivers the wrapped zippered package.

Next, the operation of the horizontal zippered package manufacturing machine configured as described above will be explained.

This manufacturing machine basically consists of a first feed roll 12 and a second feed roll 12.
When the feed roll 17 stops feeding the continuous packaging body 10 by a certain length (width of the packaged body), the preliminary seeker 9, the horizontal sealer 13, and the vertical sealer 14 perform an operation of sealing and welding predetermined parts of the continuous packaging body. During packaging in the packaging process of repeatedly manufacturing zippered packages, the dance roll 47 swings in the film feeding section 1 in accordance with the drawing of the film, and the drive roll 44 swings in accordance with the swing width. is rotated and the film is pulled out from the wound film roll 2 by traversing. At this time, the position detector 4
o detects the edge position of the film to be pulled out, and if the edge position is lower than the reference position, the motor 38 drives the threaded rod 34, 35 to raise the vertically movable stage 36 supporting the film roll 2. When the edge position is higher than the reference position, the screw rods 34 and 35 are driven in the opposite direction to lower the vertically movable table 36. As a result, even if the film roll 2 is traversed and wound, the film can be pulled out from a fixed position, and the film can be stably fed out without wrinkles or the like.

The film that has passed through the guide roll 46 and the dance roll 47 is cut in the longitudinal direction from the center by a cutter, and the two films separated into upper and lower parts are sent to the delivery roll 48.
．． 48 and is sent to the product supply section 6.

In the product supply section 6, the packaging continuum 10 is fed by a feed roll.
In synchronization with the feed of the upper and lower films, the objects to be packaged are pushed between the upper and lower films using a pushing cylinder. When the upper and lower films with the objects to be packaged between them pass through the fastener fitting part 8, the inner upper and lower male The fastener and female fastener are fitted together.

Then, the packaging continuum 10 is pre-sealed at its vertical side portions with a preliminary seeker 9, then its top and bottom edges are sealed with a horizontal sealer 13, and then with a vertical sealer 13.
At step 4, both vertical sides are fully sealed.

Thereafter, the packaging web 10 is punched with holes for notches in a punching station 15, passes through a second feed roll 17, and is cut transversely from its longitudinal sealing part in a final cutting station 27 to separate individual The package is placed on the delivery conveyor 28.

<Effects of the Invention> As explained above, according to the film feeding device of the horizontal zippered package production machine of the present invention, two threaded rods are vertically rotatably supported in the film feeding portion at an interval. A vertically movable table having threaded holes on both sides of both threaded rods is arranged horizontally by screwing the threaded holes into both threaded rods.
A motor is installed to rotate both threaded rods, and a support shaft that rotatably supports a film roll is installed vertically on the vertically movable table to detect the edge position of the film fed out from the film roll. A position detector is provided,
This is because the film is fed out while moving the film roll up and down by controlling the drive of the motor according to the detection signal from the position detector so that the edge position of the film fed out from the film roll remains at a constant position. Even if the film roll is a film roll with a zipper that has been traversed and wound, the film with a zipper can be stably and satisfactorily fed out from the film roll.

[Brief explanation of drawings]

The figure shows an embodiment of the invention, Figure 1 is a front view of the manufacturing machine. Figure 2 is the same plan view, FIG. 3 is an enlarged sectional view taken along the line -■ in FIG. 2. 1... Film feeding section, 2... film roll, 34.35...Threaded rod, 36... Vertical moving table, 38... motor, 40...Position detector 44... Drive roll. Special Person asking for permission

Claims (2)

[Claims] (1) A film with a male zipper and a female zipper installed in the longitudinal direction is pulled out from the wound film roll by traversing, the center of the film is cut in the longitudinal direction, and the two films are sent to the packaging process. A film feeding device for a horizontal manufacturing machine for zippered packages, in which two threaded rods are rotatably supported vertically at an interval in the film feeding portion, and both threaded rods have screw holes on both sides. A vertically movable table having a screw hole is screwed to both threaded rods and is disposed horizontally, a motor for rotationally driving both of the screwed rods is installed, and a film roll can be freely rotated on the vertically movable table. A support shaft is vertically supported, and a position detector is provided to detect the edge position of the film fed out from the film roll, so that the edge position of the film fed out from the film roll is at a constant position. A film feeding device for a horizontal zippered package manufacturing machine, which feeds out the film while moving the film roll up and down by driving and controlling a motor in accordance with a detection signal from the position detector. (2) The film feeding device for a horizontal type manufacturing machine for packages with zippers according to claim 1, wherein soft rubber rolls are used as drive rolls and guide rolls for driving and guiding the running of the film in the film feeding section.