JP2601920B2 - Automatic film splicer - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an automatic film splicing apparatus applied to a working machine such as a molding and filling machine.

[Conventional technology]

The outline of the prior art described in Japanese Patent Publication No. 62-7096 will be described with reference to FIGS.

FIG. 8 is a side view of the present film supply apparatus, FIG. 9 is an enlarged view of the film holder and a partly cut-away portion of the operating arm, FIG. 10 is an enlarged view of the inverted state of the film holder, and FIG. Is a partially enlarged view of the sticking plate, FIG. 12 is a partially enlarged view showing a state in which the adhesive tape is separated from the adhesive plate, FIG. 13 is a view on arrow P in FIG. 9, and FIG. 14 is a perspective view of the sticking plate. FIG. 15 is a sectional view showing the groove shape of the sticking plate.

A detector for detecting the end portion of the first film is provided in the first film transfer path, and a film holder and an operating arm opposed to each other are provided on the downstream side of the transfer path so as to be movable toward and away from the first film transfer path.
A groove is formed between the upper and lower pressing portions of the holding member, and a first temporary fixing means for adhesively holding the leading end of the second film with an adhesive tape is provided on the upper pressing portion, and A second temporary fixing means for holding the second film in a V-shape within the groove by a hole and a stopper having elasticity is provided, and the film holder and the operating arm are joined by the detecting operation of the detector to form the first film and The second film is adhered, and a pressing plate facing the upper and lower pressing portions of the holder is attached to the supporting plate via a spring member on the operating arm, and a cutter protruding between the pressing plates is protruded to press the tip of the cutter. A film supply device which is arranged in a rearward direction from a plate front end surface and is separated from the first film by the bonding operation of the two films.

Detailed Description of Automatic Film Splicing Unit In the figure, reference numeral 1 denotes a supply device main body, 2 denotes a main roll for supplying a first film, and 2 'denotes a sub roll for supplying a second film.

Side plates 14 are respectively provided at lower portions on both sides of the supply device main body 1, and both ends of a main roll 2 and a sub roll 2 'are rotatably supported before and after the side plates.

Rollers 3 and 4 are rotatably attached to the front surface of the supply device main body 1, and guide the first film b fed from the main roll 2 to the drive roller 5.

The drive roller 5 is provided behind the roller 4 and has a motor 11
, The first film b is sandwiched between the first film b and the pressing roller 6, and tension rollers 7, 8,
Transfer to 9.

When the feeding speed of the packaging film b is faster than the feeding speed, the tension rollers 7, 9 are lowered to keep the packaging film b in tension, and when the packaging film b is lowered to a predetermined height, the limiter works to stop the motor 11, The feeding of the packaging film b is stopped. Next, since the packaging film b is only sent out, the tension rollers 7, 9 are raised, and when the packaging film b is raised to a predetermined height, the limiter operates to restart the drive motor 11, and the packaging film b is fed again. Is to be entered. The first film b is stored in the tension rollers 7, 8, 9 even when the tension rollers 7, 9 are raised most, so that the film can be supplied for a while.

An aluminum foil or the like is attached to the end of the first film b. The aluminum foil is detected by a detector 12 provided above the roller 3 so that the end of the main roll 2 is detected. ing.

A film holder 15 and an operating arm 16 are disposed between the detector 12 and the roller 4 so as to oppose a transfer path of the first film, and the film holder 15 is provided with a second film b from the auxiliary roller 2 '. 'Is derived.

Pivot shafts 21 are provided at both ends of the film holder 15, and are pivotally supported at both ends of the supply device main body 1, respectively, so that the film holder 15 can be turned over as shown in FIG. It is locked by the provided holder stopper 13 so as not to be inverted.

The film holder 15 is formed with a groove 23 facing the front surface of the supply device main body 1, and pressing portions 24, 25 parallel to the front surface of the supply device main body 1 are formed above and below it. The above groove 23
An elongate hole 26 is formed in the wall surface of the second film b 'so that the second film b' can be folded. The folded second film b 'is a rubber stopper 27 provided on the back surface of the pressing portion 24.
Is temporarily stopped by

At the boundary between the groove 23 and the pressing portion 24, a long sticking plate 28 having pivots 29 at both ends is rotatably supported via pivots 29. On the surface of the sticking plate 28, a large number of narrow grooves having a cross section as shown in FIG. 15 are provided in the width direction. An adhesive tape a is attached to the attachment plate 28 so as to protrude from the tip, the tip of the second film b 'is attached to the center of the protruding portion, and the remaining adhesive portion faces the first film b. To do it.

The pressing plates 30, 30 of the working arm 16 are provided so as to face the pressing portions 24, 25 of the film holding member, respectively, and are fixed to the support 32 via leaf springs 31, 31.

The support plate 32 is fixed to the tip of an air cylinder rod 34, and the operation arm 16 moves toward and away from the film holder 15 by driving the cylinder.

A cutter 33 is provided at the center of the support 32 so as to protrude between the pressing plates 30, 30, and the tip of the cutter 33 is arranged in a rearward direction from the pressing surfaces of the pressing plates 30, 30.

In this embodiment, the first film and the second film are bonded with an adhesive tape, but a heat sealing device can be used instead of the adhesive tape.

[Operation of this device]

First, the film holder 15 is turned over as shown in FIG.

Next, the adhesive plate 28 is turned over, and the surface, that is, the surface provided with the narrow groove is directed toward the front side, and the adhesive tape a is attached so as to protrude from the tip by about 2/3 of the width of the adhesive tape a. Then, the sticking plate 28 is turned halfway so that the adhesive side of the adhesive tape a faces forward.

Next, the second film b 'is unwound from the sub-roller 2' and passed under the film holder 15, leaving about 1/3 of the adhesive portion of the adhesive tape a. I do.

Then, the second film b 'is folded into the long hole 26 of the groove 23, temporarily fixed with the rubber stopper 27, and then the film holder 15 is turned halfway, as shown in FIG.
Fix with 13.

Since the second film b 'is folded as described above, it is not cut by the cutter 33.

The setting of the second film b 'as described above can be performed without any trouble during the operation of the film supply device.

When the first film b is completed, the detection is detected by the detector 12, the motor 11 is driven or temporarily stopped, and the cylinder rod 34 is propelled to press the pressing plates 30, 30 against the pressing portions 24, 25.

In the pressing portion 24, the adhesive tape a is set together with the second film b ', and is joined to the first film as shown in FIG.

The cutter 33 is also propelled at the same time, and the leaf spring 31 is contracted.
Disconnect more.

Next, the cylinder rod 34 returns to its original position, the motor 11 restarts, the adhesive tape a is peeled off the adhesive plate 28 as shown in FIG. 12, and the second film b 'is fed.

Then, the first roll 2 is removed, the lock of the second roll is released, the second roll is supported at the place where the first roll was, and the next roll is newly set.

Since the present invention is configured as described above, the end of the first film is detected by the detector, and the leading end of the second film set in advance on the film holder is automatically joined to the first film. Since the worker only sets the second film in advance, one worker can manage a plurality of film supply devices.

Also, the second film can be set while the film supply device is moving, and the first film and the second film can be joined in a short time, so that the film can be continuously supplied.

[Problems to be solved by the invention]

The prior art as described above has the following problems.

(1) Since the temporary fixing of the second film is used in two places, it is troublesome.

(2) Since the tip of the pressure-sensitive adhesive tape on the sticking plate (the portion to be bonded to the first film) is free and not restrained, the bonding portion is unstable in the bonding operation, and there is a possibility that the bonding may be damaged.

(3) Partial width of the adhesive tape to be attached to the adhesive plate and the second
The ratio of the partial width of the tape to the film is delicate, and this operation requires skill.

(4) The structure is complicated and the cost is high.

SUMMARY OF THE INVENTION An object of the present invention is to provide a film automatic splicing device in which the temporary fixing of the second film is one type, the adhesive tape and the film end are not restricted, and the operation is simple in order to eliminate the above-mentioned problems. Things.

[Means for solving the problem]

(1) A holding arm that rotates the succeeding film (the second film) on the film transfer path from 180 ° directly below to right above is provided, and a double-sided adhesive tape is stuck on this end face, and it is superimposed on it and longitudinally formed on a stainless steel thin plate. A part having several holes in the direction is attached to form a temporary fixing member for a subsequent film.

The subsequent film is turned from under the holding arm, and its end is temporarily fixed through a hole in the stainless steel plate of the holding portion. Then, the double-sided adhesive tape is attached on the film. There is only one type of temporary fixing.

(2) As described in the above (1), the trailing film end is fixed and restrained.

(3) When the film is connected, the holding arm described in the above item (1) is rotated by 180 °, so that the connection end of the subsequent film occupies a correct position, and a predetermined mounting accuracy is obtained.

(4) The connection with the film and the cutting of the leading film end are completed simultaneously in one stroke by the pneumatic cylinder.

(Operation)

(1) The holding arm for temporarily fixing the subsequent film is rotated upward by 180 °, so that the work of temporarily fixing can be easily performed.

(2) A double-sided adhesive tape is pasted on the holding arm, and a thin stainless steel plate with a hole is pasted thereon. Since the succeeding film is temporarily fixed through this hole, the adhesive strength with the film is reduced to a fraction of that of the entire surface.

(3) The adhesion between the subsequent film and the preceding film is also connected by a double-sided adhesive tape having substantially the same width. When the film is subsequently fed, this connection portion will attract the temporary fixing portion of the holding arm. Since the area of the hole of the thin plate is small, the side of the temporary fixing loses and separates.

(4) After the holding arm has taken the connection position around 180 °, the lower holding plate and cutter are raised by the pneumatic cylinder, but the holding plate is supported by the spring, and the holding plate is connected to the film first. Then, the leading film of the cutting bar and the cutter cutting presser bar is pressed, and then the cutter is raised to cut the leading film immediately after the connecting portion. Since the connection and disconnection are performed in less than one second, there is no need to stop the working machine that moves using the film.

〔Example〕

An embodiment for a film supply section of a molding and filling machine will be described with reference to FIGS.

 1,1 'is the main frame that supports the film supply unit.

 Reference numeral 2 denotes a main roll for winding the preceding film a.

 Reference numeral 3 denotes a preliminary roll for winding the subsequent film b.

Both rolls rotate freely according to the film delivery. A roll brake 36 is provided on the main roll side so as to apply an appropriate tension to the preceding film a.

Reference numeral 4 denotes a free roll for the film a, which feeds the film a in the direction of the bonding mechanism and the feed roll 15.

Reference numeral 5 denotes a free roll for film b, which can be easily removed in the direction of arrow A.

 Reference numeral 6 denotes a photoelectric switch for sensing the end of the film a.

Reference numeral 7 designates a holding arm for temporarily fixing the leading end of the film b, a structure which can be rotated up and down 180 ° by a handle 10 around a rotation axis of a bracket attached to an upper support 8 and a tension spring 35 attached to the root of the handle. Is for surely holding the holding arm 7 at the upper and lower positions.

Reference numeral 8 denotes an upper support, a lower support 13 and a support rod 27 (a pair) form a frame for supporting the film bonding mechanism. The supports 8 and 13 are fixed to the main frames 1, 1 'by bolts.

 13 attaches a lower support and a pneumatic cylinder 14.

Reference numeral 9 denotes a cutter cutting presser bar, as shown in FIGS. 3 and 4, which is provided with a deep groove for escape of the cutter blade. After the film is adhered, the presser bar interferes with the feeding of the film, so that it is pulled out in the direction of arrow B in FIG.

Reference numeral 11 denotes a lower pressing plate and a slit through which the cutter 26 passes. A pad 29 made of a soft material such as rubber is attached to the bonding position to secure the film bonding as shown in FIG. 3, which is structured to be pushed up by a pneumatic cylinder 14 via a spring 25. Similarly, before and after the cutting position of the cutter, a soft pad 30 for firmly pressing the film for ensuring the cutting of the film a is attached.

12 is equipped with a cutter holder, a saw blade-shaped cutter 26, and is moved upward by a pneumatic cylinder 14 so that the film a
Disconnect.

The cutter holder and the lower pressing plate 11 are spaced by a pair of stop bars 28. Also, lower pressing plate
A pair of compression springs 25 is incorporated in a support rod 27 serving as a guide when the cutter 11 and the cutter holder 12 move up and down.
In a normal state in which the pneumatic cylinder 14 is lowered, the pneumatic cylinder 14 extends to the stop position of the stop bar 28.

15 is driven by a feed roll of the film a and a deceleration motor 17.

Reference numeral 16 denotes a press roll for the feed roll 15, and the roll portion is covered with a soft material to ensure the feeding of the film.

 18 sends the film to the free-rolling machine.

19,20,21 are dancer rolls, both are freerolls,
The shaft position of the roll 19 is fixed, and the roll positions of the rolls 20 and 21 are moved up and down by means (not shown).
The difference between the speed of the work machine and the film supply speed is adjusted. The feed speed of the film is set slightly faster than the required film speed on the working machine side by the deceleration motor 17, and when the slack of the film increases, the dancer roll 20 descends and presses the limit switch 23, and the speed is reduced by the electric signal generated by the limit switch 23. The motor 17 stops temporarily. When the film is sent to the work machine and the accumulated film is reduced, the dancer roll 20 is raised to the upper limit switch.
Press 24, and the electric signal restarts the deceleration motor 17.

Next, the temporary fixing mechanism (the method for temporarily fixing the film b) is the third one.
This will be described with reference to FIGS. 5, 5, 6, and 7. FIG.

A double-sided adhesive tape 31 is attached to the end face of the holding arm 7 as shown in FIG. 5, and a stainless steel thin plate (0.2 to 0.3
The perforated plate 32 made of 粍) is attached. The film b is temporarily fixed thereon, but the adhesive strength is sufficient to withstand various operations after the film temporary fixing because only the holes of the perforated plate 32 are adhered, and is smaller than the adhesive strength between the film a and the film b. It will be sufficiently weak.

The state in which the film b is temporarily fixed is as shown in FIG. 6, and the film b is adhered through the hole of the perforated plate 32. Film b
A double-sided adhesive tape 33 is stuck on the upper surface of.

As another example of the temporary fixing of the film b, when a single-sided adhesive tape is used for bonding the film b, as shown in FIG. Thin perforated plate 32, on which single-sided adhesive tape 34
The film b is stuck on this non-adhesive side (temporarily fixed) to about half the width of the single-sided adhesive tape 34.

After the film b is temporarily fixed, the holding arm 7 is rotated by 180 ° so that the adhesive portion of the double-sided adhesive tape 33 or the single-sided adhesive tape 34 faces downward, and the preparation for bonding and joining the films a and b is completed. As described above, the setting of the film b can be performed without any trouble during the operation of the film supply device.

 Next, the operation of the present apparatus will be described.

(1) Preparation for connection of the succeeding film b is performed while there is room for the film of the roll 2 of the preceding film a.

1.1) Set a new film roll 3 in the position shown in FIG.

1.2) Set freeroll 5 in place.

1.3) Mount the cutter cutting presser bar 9.

1.4) The film b is pulled out from the film roll 3, passed over the free roll 5 and the cutter cutting press bar 9, turned upward from below the upper support 8, and temporarily fixed the end of the film to the holding arm 7. FIG. 3, FIG. 6 or FIG. 7 shows the state.

1.5) Turn the holding arm 7 180 ° down, loose film b
To rewind.

(2) When the rear end of the preceding film a approaches, the photoelectric switch 6 operates, and the film-a feed deceleration motor temporarily stops.

(3) When the pneumatic cylinder 14 is actuated, the cutter holding table 12 and the lower pressing plate 11 rise while keeping an interval therebetween, and the lower pressing plate 11 first pushes up the film a to move between the cutter cutting presser bar 9 and the lower presser plate 9. At the same time, the film b temporarily fixed to the holding arm 7 is pushed up and the films a and b are bonded together. Next, the pneumatic cylinder 14 further pushes up the cutter holding base 12 and the spring 25 contracts, so that the lower pressing plate 11 holds the film a while the cutter 26 rises to cut the film a. FIG. 4 shows the state at this time.

(4) Operate the pneumatic cylinder in reverse to lower the cutter holder 12 and lower press plate 11.

(5) Pull out the cutter cutting presser bar in the direction B in FIG. 1 and remove the free roll 5.

(6) Restart the film drive deceleration motor 17.

 This completes the automatic splicing of the film.

〔The invention's effect〕

The present invention relates to an automatic film splicing apparatus for connecting a rear end of a preceding film to be connected to a front end of a succeeding film by an adhesive tape, wherein the end of the succeeding film is rotatably held above the transfer path of the preceding film. A temporary fixing means for temporarily fixing the adhesive tape, a cutter receiving means which is detachable from an upper side of the preceding film and which receives the cutter while pressing both sides of the cut portion of the preceding film, and the temporary fixing means below the preceding film. And a film cutting means comprising a cutter or the like for trimming the trailing end of the preceding film, and a cutter receiving means on the leading film when the trailing end of the preceding film approaches. After taking out from the side and temporarily fixing the subsequent film, the temporary fixing means is rotated downward, so that the temporary fixing portion of the subsequent film and the preceding film are parallel to each other, By pushing up the film cutting means from underneath the film, the preceding film and the succeeding film are adhered to each other with the pressing plate of the film cutting means via an adhesive tape, and at the same time, the ends of the preceding film are trimmed by the cutter via the cutter receiving means. Has the following effects.

(1) Temporarily fixing the film from a new roll in the preparation stage of the film splicing is easy at one location where the work is most easily performed and uses the entire width of the adhesive tape.

(2) Since the end of the film from the new roll temporarily fixed is completely mechanically constrained, there is almost no damage during the bonding operation with the old film.

(3) Since the structure is simple, it is expected that the adjustment container, the number of failures, the body and the maintenance cost will be reduced.

(4) Since the joining operation is completed in a very short time, there is almost no need to stop the working machine using the film. Therefore, the present invention can be applied to many kinds of automatic packaging machines that operate continuously using a film.

[Brief description of the drawings]

FIG. 1 is an overall perspective view according to a first embodiment of the present invention, and FIG.
FIG. 3 is a front view of the automatic film bonding / cutting mechanism in FIG. 1, FIG. 3 is a central sectional view of FIG. 2 at the time of temporary fixing of the succeeding film, FIG. Fig. 5 is a detailed view of the method of temporarily fixing the film, Fig. 6 is an explanatory view when a double-sided adhesive tape is used for bonding the film and Fig. 7, and Fig. 7 is the film and the film in the second embodiment. FIG. 8 is a side view of a conventional film supply device, FIG. 9 is an enlarged view of a film holder and a partially cut-away portion of an operation arm, and FIG. 10 is a film. FIG. 11 is a partially enlarged view of the sticking plate, FIG. 12 is a partially enlarged view of the sticking plate being separated from the adhesive plate, and FIG.
FIG. 13 is a view taken in the direction of the arrow P in FIG. 9, FIG. 14 is a perspective view of the sticking plate, and FIG. 15 is a sectional view showing a groove shape of the sticking portion. a: Leading film, b: Trailing film 7: Holding arm, 9: Cutter cutting presser bar 11: Lower presser plate, 14: Pneumatic cylinder 26: Cutter

Claims (1)

(57) [Claims] 1. An automatic film splicing device for connecting a rear end of a preceding film to be connected to a front end of a succeeding film by an adhesive tape, wherein the trailing film end is rotatably held above the leading film transfer path. Temporary fixing means for temporarily fixing the arm with an adhesive tape, cutter receiving means which is detachable from the upper side of the preceding film and which receives the cutter while pressing both sides of the cut portion of the preceding film, and said temporary fixing below the preceding film. Means and a cutter for cutting out the rear end of the preceding film.The cutter receiving means is disposed on the preceding film when the rear end of the preceding film approaches. Out of the side, temporarily fix the subsequent film, rotate the temporary fixing means downward, and make the temporary fixing portion of the subsequent film and the preceding film parallel, and By pushing up the film cutting means from underneath the film, the preceding film and the succeeding film are adhered to each other with an adhesive tape by means of the pressing plate of the film cutting means, and at the same time, the ends of the preceding film are trimmed by the cutter via the cutter receiving means. Automatic film splicing device.