JPH0330246Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention is a device for changing the tear tape in a packaging film feeding device, and more specifically, the present invention is a device for replacing the tear tape in a packaging film feeding device. The present invention relates to a device for dispensing a tear tape by adhering a tear tape to the paper, and for replacing the tear tape in use with a new one when it runs out.

(Prior art and its problems) A conventional film feeding device feeds out a tearing tape from a tape reel onto a film feeding path, transports the tape along the film, and adheres the two using a thermal bonding device. When the opening tape on the tape reel is used up, the drive of the device is temporarily stopped, the tape reel is manually replaced with a new tape reel, the tape is pulled out and set in a predetermined position, and the device is driven again. was.

However, as the speed of the equipment increases, the frequency of replacing the tear tape increases, and if the equipment is stopped each time, productivity will decrease, so the need for automation has increased.

(Purpose of the invention) In view of the conventional circumstances, the present invention improves work efficiency and productivity by automatically supplying new unsealing tape when the remaining tape in use is detected without stopping the equipment. The purpose is to provide a packaging device with high performance.

(Structure of the invention) The tear tape exchanging device of the present invention has two delivery rolls arranged side by side in a packaging film delivery path, and a pressure roller having a suction surface on each roll that can freely approach and separate from the delivery roll. At the same time, two tape reels are arranged on the feeding path to form two tape transport paths that guide the tape from each reel to a pressure roller, and each transport path has a suction roller near the cutter and pressure roller. A tape holder is installed to hold the tape by suction, and the pressure roll holds the tip of the tape by suction to which the adhesive tape piece is attached.A detector is installed near each tape reel to detect the amount of tape remaining. and the detection operation of the detector operates the cutter on the side of the transfer path to move the tape toward and away from the tape, brings the pressure roller on the other side of the transfer path closer to the feed roll, and stops the suction of the tape holder. do.

(Function) According to the above configuration, the device is in a driving state with the tear tape being supplied from either one of the two tape transfer paths to the film feeding path, and the detector detects the amount of tear tape remaining in use. When the tape is removed, the tearing tape in use is brought into contact with and separated by the cutter, and the replacement tearing tape previously set on the other transfer path is brought closer to the pressure roller and the feed roll and the suction of the tape holder is stopped. The film is supplied to the film feeding path for tape exchange, and when one tape is used up, tearing tapes are sequentially and alternately supplied from the two tape transport paths.

(Embodiment) An embodiment of the present invention will be explained with reference to the drawings in the case of an overwrap film feeding device for cigarette packaging. In FIG. 1, 1 and 2 are feeding rolls g ₁ and g ₂ driven by motors not shown. , g ₃ ... are guide rollers, and the overwrapping film (cellophane) a is
3 is a thermal bonding device and 4 is a printer.

Pressure rollers 5, 5' are placed on the feeding rolls 1, 2.
At the same time, reel holders 6, 6' are arranged above the rollers 5, 5', and tape reels b', 6', in which strip-shaped opening tapes b, b are wound around each reel holder 6, 6'. b' are attached removably.

Between the two reel holders 6, 6' and the pressure rollers 5, 5', there are a plurality of guide rollers r...,
r'... and tension bars 7, 7' are arranged to form tape transport paths 8, 8', and from the tape reels b', b' to transport paths 8, 8'.
Press the tear tapes b, b through the pressure rollers 5, 5'.
I will guide you to.

That is, two tape transfer paths 8, 8' are formed on the feeding path A to guide the unsealing tapes b, b separately from the tape holders 6, 6' to the pressure rollers 5, 5'.

In each transfer path 8, 8', a tape holder 9, 9' is installed at a position close to the pressure roller 5, 5', respectively, and a cutter 1 is installed upstream of the holder 9, 9'.
Set 0,10'.

Since the pressure rollers 5 and 5' and the tape holders 9 and 9' have the same structure, for convenience of explanation,
Details of the pressure roller 5 and tape holder 9 will be explained with reference to FIGS. 2 and 3.

In FIG. 2, reference numeral 11 denotes a fixed shaft.A bracket 12 is rotatably supported on the fixed shaft 11, and the pressure roller 5 is rotatably supported on the bracket 12. A rod 13 is integrally provided upward and an air cylinder 1 is attached to the rod 13.
4 rods 14' are connected, and this air cylinder 1
4, the pressure roller 5 is made vertically movable via the rocker 13 and the bracket 12. As a result, the pressure roller 5 moves toward and away from the delivery roll 1.

Further, a locking plate 15 is coaxially and integrally protruded from the pressure roller 5, and a recessed notch 15' is formed on the upper surface of the locking plate 15.
When the pressure roller 5 is at the upper limit position, the concave notch 15' is fitted and engaged with the stopper roller 16 to restrict the rotation of the pressure roller 5 (Fig. 3), and the pressure roller 5 is lowered. At this time, the stopper roller 16 escapes from the recessed notch 15', causing the pressure roller 5 to freely rotate.

A suction path 17 is formed in the axial center of the pressure roller 5 and communicated with a suction hose 17', and suction holes 18, 18 extending in the radial direction are communicated with the suction path 17, and the suction holes are connected to the pressure roller 5. The suction surface 19 is formed in the vicinity of the opening.

The suction surface 19 is positioned on the tape holder 9 side when the pressure roller 5 is at the upper limit position, that is, when the rotation of the roller is restricted by the stopper roller 16.

In FIG. 2, reference numeral 30 is a presser pawl rotatably supported on a shaft 31 disposed above the pressure roller 5.

The tape holder 9 has a suction surface 20 arranged so as to face the tape transfer path 8, and the suction surface 20 has a suction path 22 that communicates with a suction hose 21 and a suction hole 23 that is continuous with the suction path 21 to perform suction action in a timely manner. is formed so that it occurs.

Further, near the reel holders 6, 6', there are installed detectors 24, 24' consisting of proximity switches for detecting the rotation of the tape reels b', b', and tape remaining detectors 25, 25'.

The detectors 24, 24' detect whether or not the tape reels b', b' are rotating, that is, the tape reels b',
b' is in use or not, the detectors 25, 25'
The method detects the color difference between the tape and the core of the tape reel at the winding start ends of the tapes b and b, thereby detecting that the remaining amount of the tape during use is small.

The detectors 24, 25 or 24', 25' are controlled to output a detection signal when both of them perform a detection operation, that is, when the rotating state of the tape reel and the amount of tape remaining are detected.

A detection signal from the detectors 24, 25 or 24', 25' operates the cutter 10 or 10' of the transfer path 8 or 8' on the detector side, and also operates the cylinder 14 of the other transfer path 8' or 8. Then, the pressure roller 5' or 5 is lowered and the suction action of the tape holder 9' or 9 is stopped.

As shown in Fig. 1, the tape reel b' on the reel holder 6' side is in use and the tape reel b' on the other holder 6 is for replacement. The reel b' is manually drawn out along the transfer path 8, and an adhesive tape piece c is attached to the tip of the tape b, with a part of the adhesive surface of the tape piece c exposed. Pressure roller 5
The tape b is suctioned and held on the suction surface 19 of the tape holder 9, and the tape b is suctioned and held on the suction surface 20 of the tape holder 9, with a slack portion P formed at its upstream portion, and preparation for replacement is completed.

In addition, when the suction action on the suction surface 19 of the pressure roller 5 is to be stopped, such as at the end of the working day, after the preparation for replacement of the top pack is completed, the tape piece c is pressed and clamped by the pressure roller 5 by the presser claw 30, and the tape piece c is removed. Make sure to prevent it from falling off (Figure 4).

When the remaining amount of the tape b in use becomes low and the detectors 24' and 25' output a detection signal, the cutter 10' operates to cut off the tape b in use, while the pressure roller on the replacement side 5 is lowered to approach above the feed roll 1, and the adsorption action of the tape holder 9 is stopped after a certain period of time.

When the pressure roller 5 approaches the feed roll 1 and comes into contact with the roll 1, it starts to rotate and feeds the tape tip held on the suction surface 19 onto the feed roll 1, and at that point the suction action of the suction surface 19 is stopped.

The tape piece c at the tip of the tape b fed onto the feed roll 1 is adhered and connected to the upper surface of the film a, and then the tape b is bonded onto the film a by rolling between the feed roll 1 and the pressure roller 5. The film a and the tape b are thermally bonded together when the film is fed out along the feeding path A and passes through the thermal bonding device 3, and required characters such as the expiry date are printed on the film a when it passes through the printer 4. After that, it is sent to the overwrapping process.

On the other hand, on the transfer path 8' side, the cutter 1
After the tape b is brought into contact and separated by the operation of 0', the end of the tape on the feeding side passes through the feeding roll 2, and then the pressure roller 5' is raised and returned by the cylinder 14, and the tip of the tape on the reel side is manually moved. is rewound to the reel holder 6'.

Therefore, while the tape reel b' on the transfer path 8 side is newly supplying tape, it is sufficient to replace a new tape reel in the reel holder 6' and perform the above-mentioned replacement preparation work. By repeating the same operation, the tapes b are alternately supplied to the feeding path A from the reel holders 6 and 6'.

In addition, 26 shown in FIG. 1 is a guide wheel that regulates the width direction of the opening tape b running in a spliced manner on the film a to prevent horizontal wobbling, and 27 is a cutter 10 or 1.
This is a guide piece that is operated by an air cylinder to prevent the end part of the tape from wobbling laterally after tape b is separated by the operation of 0', and has a felt material attached to the surface that comes into contact with the tape. There is.

(Effects) According to the present invention, tear tape is supplied from one of the two tape reels, and while the other tape reel is in use, the tear tape on the other tape reel is prepared for replacement, and the amount of tape remaining in use is reduced. When detected, a replacement tape is automatically supplied to the feeding path and connected to the film, so that the supply of tear tape can be automatically replaced without stopping the film feeding device.

Therefore, the workability and productivity of the packaging device can be improved to achieve the intended purpose.

[Brief explanation of the drawing]

Fig. 1 is a front view of the device of the present invention, Fig. 2 is a partially cutaway view to enlarge the main part, Fig. 3 is a sectional view showing the locked state of the pressure roller, and Fig. 4 is a holding of the tape piece by the presser claw. It is a sectional view showing a state. In the figure, A is a feeding path, a is a packaging film,
b' is a tape reel, b is a tear-opening tape, 1 and 2 are feed rolls, 3 is a thermal bonding device, 5 and 5' are pressure rollers, 8 and 8' are tape transfer paths, 9 and 9' are tape holders, 10 , 10' are cutters, 19 and 20 are suction surfaces, c is a tape piece, and 25 and 25' are tape remaining detectors.

Claims (1)

[Scope of utility model registration request] In a packaging film feeding device that feeds out a tear tape from a tape reel onto a packaging film feeding path, transports the tape along the top of the film, and adheres the two using a thermal bonding device, two tapes are provided on the film feeding path. A pressure roller having a suction surface on each roll is installed in parallel to the pressure roller, and two tape reels are arranged on the feeding path, and the tape is transferred from each reel to the pressure roller. Two tape transfer paths are formed to guide the tape, and each transfer path is provided with a tape holder that uses a suction to adsorb and hold the tape near the cutter and pressure roller, and a piece of adhesive tape is attached to the pressure roller. A detector is provided near each tape reel to detect the amount of tape remaining, and the detection operation of the detector operates a cutter on the transfer path side to cut the tape. At the same time, the unsealing tape changing device brings the pressure roller on the other side of the transfer path closer to the feeding roll and stops the suction of the tape holder.