JPS63160965A - Setting method for film in packer - Google Patents

Abstract

PURPOSE:To execute rapid setting of a film in an operation starting position, by a method wherein both sides at the tip of the film are grasped by means of a chuck, the chuck is moved to a given position at a high speed without a stop, and the tip of a cover film is laminated to the tip of the film. CONSTITUTION:After a change-over switch 11 is changed over to a set position, the tip of a container film f1 is pulled out by a hand, and is set to a position A between end chains 2. With a start switch 12 depressed, a servo motor 4 is run at a high speed, and the chains 2 are also moved continuously through a reduction gear 5 and a drive sprocket 3. During the initial stage of movement of the chain 2, by the starting of movement of a chuck 7 together with the chuck 2, the chuck 7 is fastened, the side edges of the container film f1 are grasped by means of the chucks. At a point of time when the forward edge of the container film f1 is conveyed to a set position B, running of the motor 4 is stopped. A cover film is pulled out and is forced to pass through a position under a guide roller 15, marks are registered visually, and the forward edge is superposed with the film f1 for lamination.

Description

Detailed Description of the Invention 0 Field of Industrial Application The present invention relates to a method for setting a film in a packaging machine such as a form-fill packaging machine, and more particularly, it relates to a method for setting a film in a packaging machine such as a form-fill packaging machine, and more particularly, it relates to a method for setting a film in a packaging machine such as a form-fill packaging machine. The present invention relates to a method for quickly setting a film and a cover film to a state where they can be packaged.

(0) Prior art In a so-called filling and packaging machine that fills a hindlimb container formed from a band-shaped container film and then seals it by covering the container film with a cover film, both edges of the container film are moved in a certain direction. The containers are gripped by chucks attached at regular intervals to a chain that circulates around the area, and the packaging operations described above are sequentially performed while the containers are intermittently fed by the intermittent feeding of the chain. When such a filling and packaging machine is first started to operate, the container film is gripped by a chuck and fed, and the container film and cover film are set at a predetermined starting position.

By the way, conventionally, when setting the container film in the square like this, the container film is placed in the gripping position by the chuck at the upstream end of the chain, and then the chain is moved intermittently at the normal operating speed of the forming, filling and packaging machine. Since the film was sent to a predetermined operation start position by moving the film to the operation start position, there was a problem in that it took time (several minutes) to set the film at the operation start position.

Q9 Problem to be solved by the invention The problem to be solved by the invention is to enable the setting of the film to the starting position in a packaging machine quickly and easily.

(→ Means for Solving the Problems In order to solve the above problems, the present invention provides a method for operating a packaging machine that grasps and feeds both sides of a film using a chuck that moves around in a fixed direction, and wraps the product with the film. In the method of setting the film at the start, both sides of the leading edge of the film are gripped by the chuck, and the chuck gripping the leading edge of the film is moved non-stop and at a fast speed to a predetermined position to set the leading edge of the film. send it to the position,
The cover film is configured so that the tip of the cover film, which has been roughly aligned with the mark in advance, is pasted near the tip of the film.

(e) Effect With the above configuration, the film can be quickly sent and set to the operation start position of the packaging machine, and the operation of the packaging machine can be started quickly.

(F) EXAMPLE A method of setting a film according to the present invention will be explained below with reference to the drawings.

In FIG. 1, a conveyor 1 for transporting container films is shown. This conveyor 1 includes an endless chain 2 with an attachment that extends over almost the entire length of the packaging machine and is hung on a drive sprocket 3 and an idle sprocket 6 that are selectively rotated intermittently or continuously by a servo motor 4 via a deceleration fi5. They are arranged on both sides of the container film f1. Chucks 7 of a known structure are attached to the endless chain 2 at predetermined intervals for gripping the rim of the container film.

The idle sprocket 6 on the upstream side of the conveyor is attached to the support shaft 9 at an angle as shown in FIG. It is easier to hold. Reference numeral 8 in FIG. 2 is a guide plate that is attached to the support shaft 9 of the idle sprocket 6 and guides the container film f1 to the supply position to the conveyor.

The servo motor 4 is connected to a control device 10 of known construction so as to operate under the rtsn of the control device. Further, a changeover switch 11 and a start switch 12 are connected to the control device 10. The changeover switch 11 is set to r! t (if it has been switched to this position and you press the start switch, the servo motor 4 will rotate continuously), the mark alignment position, and the operating position (if it has been switched to this position and you press the start switch, the servo motor 4 will rotate continuously). It rotates intermittently for main operation.)

Next, the film setting method according to the present invention will be described with reference to the flowcharts of FIGS. 4 and 5.

First, after switching the changeover switch 11 to the set position, pull out the tip edge of the rolled container film f1 by hand, bring it into contact with the outer periphery of the guide plate 8, and insert it into the insertion position A between the pair of endless chains 2. Set 0 start switch 1
When 2 is pressed, the servo motor 4 begins to rotate continuously at high speed, and the endless chain 2 also rotates within a certain range via the reduction gear 15 and drive sprocket 3. ! ! Continuously moved. At the beginning of the movement of the endless chain 2, when the chuck 7 starts to move together with the endless chain, the chuck closes (it closes at the insertion position by a cam etc. provided along the movement path of the chuck), and the container film f1 Grasp the side edges of the As the endless chain moves, the container film f1 is also moved continuously and at high speed. Then, when the leading edge of the container film f1 reaches the set position B, the rotation of the servo motor 4 is automatically stopped. The servo motor starts operating and the leading edge of the container film f1 moves from the insertion position WA to the set position r! ! The time between sending to H is several seconds due to continuous operation of the g-end chain.

Note that when the chuck comes to the insertion position due to the movement of the g-end chain, the chuck closes one after another and grips the side edge of the container film. The set position B is located downstream of the guide roller 15 for the cover film in the film traveling direction, and is located at the sealing device (
(not shown).

Next, pull out the cover film f2 and remove the guide roller 15.
pass through the lower side of the cover film f2, and approximately align the marks m attached at predetermined intervals on the cover film f2 with the mark detector 16 provided close to the transfer path on the cover film f2 by visual measurement.
The leading edge of the cover film f2 is placed on top of the container film f1 as shown in FIG. 3 and attached with tape.

After the bonding of the cover film f2 to the container film f is completed, the changeover switch 11 is switched to the mark alignment position and the start switch is pressed, and the servo motor 4 starts rotating at a low speed. When the mark detector 16 detects the mark m on the cover film f2, the detection signal is sent to the control device, and the rotation of the servo motor 4 is stopped.

In this way, the film is set at the starting position.

After this setting is completed, the selector switch is switched to the operating position and the start switch is pressed to start operating the device.

(l-) Effects According to the present invention, since the container film is set at high speed by a chain with an attachment driven by a servo motor, the film setting time before the start of operation can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of an apparatus for carrying out the film setting method according to the present invention, and FIG. 2 is a diagram showing the line ■-■ in FIG. 1.
FIG. 3 is a diagram showing the joining of the container film and cover film, FIG. 4 is a flowchart showing the film setting operation, and FIG. 5 is a diagram showing the alignment of the marks. It is a flowchart showing the operation. 1... Conveyor 2... Endless chain 3.
...Drive sprocket 4...Servo motor 7...
Chuck 10...Control device f...Container film f2...Cover film patent applicant
CKD Co., Ltd. (5 others) [14 members of Mar 7 stile passed away]

Claims (1)

[Claims] In a method of setting a film at the start of operation of a packaging machine in which both sides of the film are gripped and fed by a chuck that circulates in a fixed direction and the product is wrapped with the film,
Both sides of the leading edge of the film are gripped by the chuck, and the chuck gripping the leading edge of the film is moved non-stop and at a high speed to a predetermined position to feed the leading edge of the film to the position, and near the leading edge of the film. 1. A method for setting a film in a packaging machine, comprising: pasting a leading end of a cover film roughly aligned with a mark in advance.