JP2827073B2 - Film confirmation device in packaging machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for checking a film in a packaging machine in which a plurality of films are set, one of which is used and the other is kept on standby.

[0002]

Conventionally, the packaging machine, so that the pair of films 50,50a, as shown in FIG. 5 is mounted, is provided with a pair of film holders 51, 51a, for example, one of the fill <br/> arm 50 when used as packaging, the other film 50a
And after using the one film 50,
It is necessary to connect the rear end portion of the one film 50 to the front end portion of the other film 50a which stands by. When connecting the two films 50 and 50a, the operator must connect the film 50 and 50a, for example, by setting a new film in the film holders 51 and 51a.
Although continued Preparations are required, not necessarily waiting in the vicinity of the always-packaging machine.

Therefore, it is necessary to notify an operator when one of the films 50 being used becomes low as described above, and as a means for this, a swinging portion of the film 50 being used is wound on the winding portion. A roller 54 attached to the moving arm 52 is placed, and the film 50 is rolled to a predetermined winding diameter (minimum winding diameter d) by utilizing the fact that the placement position of the roller 54 is lowered with a decrease in the film diameter. ) , The swing arm 52 is attached to each of the film holders 51 and 51a.
The pair of limit switches 55 and 55a
By contacting with one of the limit switch 55, so that informed that the remaining amount of the film is small and emitting an alarm, for example.

[0004]

The object of the invention is to, however, of the
In the means for detecting the remaining amount of the film, the limit switch does not operate because the film 50a is not consumed when the roller 54 of the swing arm 52 is erroneously mounted on the standby film 50a side. As a result, the operator does not know that one of the films 50 has been used, so that the packaging operation has to be interrupted due to the breakage of the film.

[0005] The present invention has been made in view of conventional problems such as described above, Ru can be reliably informed that the remaining amount of the film in use the operator has decreased
Well, it is an object to provide a verification device of the film in the packaging machine can also prevent interruption of unnecessary packaging operation by the film breakage.

[0006]

The technical measures taken by the present invention to solve the above problems are as follows. That is, the present invention is mounted for each film 3,3a is feeding the pair of film holders 14, 14a, deer
The film 3 attached to one of the film holders 14
After using , a standby is provided at the rear end of the one film 3.
The front end of the other film 3a can be connected and
The film diameter detecting means for detecting that one and the other films 3 and 3a have a predetermined winding diameter is provided for each film.
In the film checking apparatus of the packaging machine provided with the holder 14,14a side, the film diameter detector means, each full
The film can be placed on the winding portion of one and the other films 3, 3a attached to the film holders 14, 14a, and the winding
A swing arm 32 that swings with a decrease in the winding diameter of the portion ,
A pair of film holders 14 and 14a provided corresponding to the respective film holders 14 and 14a for detecting a predetermined winding diameter through the swing arm 32 .
Film holders 35 and 35a , and each of the film holders 14 and 14a is provided with a filter.
Rotation detection sensors that detect the rotation of Muhoruda 14,14a
40, 40a , and the film checking device
The swinging arm placed on one or the other film 3
One or the other film diameter detection sensor via the system 32
Output signal and one or the other rotation detection sensor
Signal output from each other
The controller 37 is provided, et al for generating a predetermined signal when not
At the point

[0007] The present invention further provides a pair of film holders.
Films 3 and 3a are attached to the film holders 14 and 14a, respectively, so that they can be fed out .
After using one of the films 3
Connect the end of the other film 3a that is on standby to the end
Possible, and the one and the other film 3,3a is a film size detection means for detecting to become a predetermined winding diameter
In the film checking device in the packaging machine provided on each of the film holders 14 and 14a side, the film diameter detecting means is used.
Steps are in one and the other of the film holders 14, 14a respectively.
And each film holder 14, 14a
For holding and sending out the attached film 3, 3a
It is connected to one of the pair of feed rollers 16,16a, and generates a predetermined pulse signal to detect a film size of <br/> the film 3,3a with the rotation of the feed rollers 16,16a An encoder 44 , and each of the film holders 14 , 14a is provided with a film holder.
Rotation test detected at pulse signal rotation Ruda 14,14a
Out sensor 40,40a it is provided, yet the fill
A predetermined parameter generated by the encoder 44 is provided to the
Loose signal and one or the other rotation detection sensor 40, 40a
Comparing the et output pulse signal, when the encoder 44 between pulses of the rotation detecting sensor <br/> over 40,40a has output the number of pulses a predetermined number, the controller 37 for generating a predetermined signal Setting
At the point where

[0008]

According to the apparatus for checking a film in a packaging machine according to the first aspect of the present invention , for example, one of the film holders is provided.
When the swing arm 32 is mounted on the take-up portion of one of the films 3 attached to the hopper 14 , one film diameter detection sensor 35 detects the swing arm 32, and the signal thereof is output. Is sent to the control device 37. Also, one of the film holder 14 for holding the film 3 when Re <br/> one film 3 is used
Also rotates, the rotation is detected by one of the rotation detection sensors 40.
There was detected, it especially is sent to the signal also controls device 37
You .

Therefore, the control device 37 controls one of the film diameters.
From the detection sensor 35 and one of the rotation detection sensors 40
The swing arm 32 is currently using the
Is determined to be placed on the winding portion of one of the film 3 while creating, not to emit a signal to one of the film 3 becomes a predetermined winding diameter.

It is to be noted that one of the films 3 is used as described above.
When made Te, for example, the swing arm 32 is waiting
If placed on the take-up part of the Do that other film 3a
In the meantime, the control device 37 has the other film diameter detection sensor.
The detection signal of the swing arm 32 and one rotation detection from the
The detection signal from the sensor 40 will be sent respectively.
You. Therefore, the control device 37 controls one or the other of the filters.
Signal output from the
How each of the signals output from the rotation detection sensor
Or generate a predetermined signal when the other is not
Therefore, as described above, the swing arm 32
Not placed on the winding section of the other film 3a
The control device 37 generates a predetermined signal, and for example, it is possible to activate an alarm device.

Further, according to the film checking device in the packaging machine according to claim 2, the film checking device includes:
One pulse or a predetermined pulse signal generated by the encoder 44
Is the pulse output from the other rotation detection sensor 40, 40a.
Signal from the rotation detection sensors 40 and 40a.
When the encoder 44 outputs a predetermined number of pulses between
A control device 37 for generating a predetermined signal is provided .

Therefore , when a predetermined winding diameter is obtained in advance,
Knowing the remaining amount of film through the number of output pulses
Is possible, therefore to via the signal, for example, it is possible to operate the warning device.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, will be described in accordance with <br/> drawings Te to an embodiment of the present invention. 1 to 3 show a first embodiment of the present invention, in FIG. 3, 1 indicates a packaging machine, the packaging machine 1 comprises a pair of elongated film wound into a roll
A homer 4 that forms the cylindrical shape 3,3a, a vertical sealer 6 that fuses and seals both edges of the film 3,3a formed into a cylindrical shape by the homer 4, and a film 3 that covers the packaged object 7. , 3a for fusing and sealing to a predetermined length.

Reference numeral 13 denotes a film bonding apparatus, and a pair of film holders 14 and 14a respectively hold the pair of films 3 and
3a are rotatably mounted respectively. Next, it describes the film bonding apparatus 13. First, in FIGS. 1 and 2, reference numerals 16 and 16a denote one of the film holders.
One film 3 attached to 14 and one used
The other end of the film 3 whose front end is connected to the rear end of the film 3
It shows a pair of feed rollers that are driven to rotate so as to pinch and send out the lum 3a , and one drive roller 16 is connected to a drive motor (not shown).

Reference numerals 17 and 17a denote a pair of guide rollers provided at a predetermined interval from each other.
One of the films 3 and 6 to be sent out while being sandwiched between 6, 16a
And connected to the rear end of the one film 3 and fed out.
To guide the other film 3a ,
The guide rollers 17, 17a and the feed rollers 16, 16
The upper and lower rollers 19 and 20 are provided at a predetermined interval between the rollers.

Reference numeral 21 denotes a swinging rod , whose upper end is swingably provided with a pivot 23 as a fulcrum so as to move an accumulation roller 22 provided at its lower end between a standby position A and an increasing position B. By moving the accumulation roller 22, the film length between the upper and lower rollers 19 and 20 can be increased or decreased.

Reference numeral 25 denotes a rear end of one of the films 3 used.
In heat-sealing apparatus for clamping and heat sealed so as to connect the front end portion of the other film 3a, and the fixed sealer 26,
A movable sealer 28 is provided to move freely to and away from the fixed sealer 26 by a cylinder device 27.

Reference numeral 30 denotes each of the films 3, 3 around a pivot shaft 31.
alternatively attached respectively to the tip of the swingable swing arm 32 the winding of a, and one film 3 selected
Or an B over <br/> La rolling the other film 3a winding outer periphery above. Then, the roller 30 is moved through the swing arm 32.
When one or the other of the films 3, 3a on which the film is mounted has a predetermined remaining amount (winding diameter) , the arm 32 is connected to one or the other of the limit switches 33, 33a provided on both the films 3, 3a.
Contact each other, and the accumulation roller 22 is moved to the standby position A by the signals of the limit switches 33 and 33a.
To the position B for increasing.

Reference numerals 34 and 34a denote film terminal sensors for detecting the terminal of each film. The signal from the sensors 34 and 34a activates the heat sealing device 33.

[0020] 35,35a, the roller 30 as shown in FIG. 2
Sector plate 36a provided at the end of the swing arm 32 on the side opposite to
A pair of film size detection sensor to detect a are respectively provided in correspondence to the film holder 14, 14a. Incidentally, the sensor 35,35a detecting the fan-shaped plate 36 to one or the other of the films 3,3a having a maximum winding diameter D is minimum winding diameter d for the the I by that <br/> predetermined use but to continue, thereafter, that is, the film 3,3a is further used,
The sensors 35 and 35a do not detect the fan 36.

Reference numerals 40, 40a denote the film holders 14, 14, respectively.
Rotation for detecting a plurality of protrusions 39 provided at equal intervals in the circumferential direction of the disk bodies 41, 41a respectively fixed to the
A detection sensor is provided corresponding to each of the film holders 14 and 14a. The signals from the second sensors 40 and 40a are transmitted as pulses at regular intervals to a control device 37 described later as the film holders 14 and 14a rotate.

The control device 37 operates normally only when both signals of the film diameter detection sensor 35 on one film 3 side and one rotation detection sensor 40 are transmitted from each. it is determined that Oh Ru, if, of one of the film 3 side
Film diameter detection sensor 35 and the other rotation detection sensor 40
If each signal is transmitted from a or the other film 3a side
Film diameter detection sensor 35a and one rotation detection sensor
When each signal is transmitted from -40, the predetermined signal
When it occurs, the buzzer of the alarm 42 can be sounded, and the operator can be notified of the abnormality.

The packaging machine according to the first embodiment of the present invention
Kicking verification device of the film consists of the above configuration, then the
The case where the confirmation device is used will be described. First, both films 3 and 3a are placed in predetermined film holders 14 and 14, respectively.
mounted on a, for example, one film 3 is adapted to use by holding the feed roller 16,16a through one of the guide rollers 17 and lower rollers 19 and 20, used as the other film 3a and a standby You.

Next, when one of the films 3 is fed out by rotating the feed rollers 16 and 16a, the film 3 is formed into a tubular shape by the former 4 and then the both edges are fused and sealed by the vertical sealer 6. Rutotomoni, the packaged articles 7 are sequentially supplied to the film 3, after the film 3 is heat-sealing at a predetermined length in the transverse sealer 9.

At this time, the swing arm 32 has one
And the roller of the swing arm 32
30 to roll on the winding upper surface of one film 3 the
Becomes At this time, the film diameter of one film 3 is detected.
The output sensor 35 is a fan-shaped plate 36 a mounted on the swing arm 32.
Is detected and a predetermined signal is transmitted to the control device 37 so that the swing arm 32 is positioned on the one film 3 side.
Although it is confirmed to have, at this time, the one rotation detection cell <br/> Nsa 40 also detects the projection 39 of the disc 40 of the film holder 14, check the rotation of the film holder 14, a predetermined signal To
It will be transmitted to the control device 37, I good, the control device 37
The one film diameter detection sensor 35 and the one
Rolling signals from both detection sensor 40 becomes <br/> be written Ri feed respectively, therefore the control unit 37 determines a normal,
The buzzer of the alarm 42 does not sound.

Further, the film 3 is used in association with the packaging of each packaged object 7, and the swing arm 32 swings downward as the winding diameter decreases. So that
Thereafter, when the film 3 reaches the minimum winding diameter d, one of the films 3
Beam diameter detection sensor 35 no longer detects the fan-shaped plate 36 a,
Thus signal 該Se Nsa 35 will not be transmitted to the control device 37. As a result, the control device 37 determines that the film 3 has a predetermined remaining amount.
(Predetermined winding diameter) and emits a predetermined signal
At the same time, the alarm 42 is actuated to sound a buzzer to notify the operator of the time for replacing the film 3.

Further, the swing arm 32 by the lowering, for contacting the one <br/> limit switch 47, the swing rod 21 swings by the signal, accumulation roller 22 is shown in phantom in FIG. 1 As described above, the film 3 moves from the standby position A to the length increasing position B, and the portion between the upper and lower rollers 19 and 10 of the film 3 is lengthened and stored.

Further, when one of the films 3 is consumed as described above and the final end of the film 3 is detected by the film end sensor 34, the heat sealing device 25 is operated after a predetermined time to use the film 3.
The trailing end of the used film 3 and the leading end of the other waiting film are sealed, and the other continuous waiting after that.
The other film 3a is paid out.

It is assumed that the operator swings the swing arm 32 as described above to position the roller 30 provided on the swing arm 32 on the side of the other newly used film 3a. If not, the rotation of the other Fi <br/> Lum holder 14a of the film 3a is held and the other rotation detecting sensor 40a
However , the other film diameter detection sensor 35a can not detect the fan-shaped plate 36a, and thus the control device 37
Alarm 42 issues a predetermined signal buzzer, and to inform the operator.

Therefore, on the winding portion of the other film 3a
Adjacent the operator knowing that not placed roller 30 of the swing arm 32 is on the surface, thus even if the operator was in far, it is possible to prevent the exchange mistakes new film in advance is there.

In the above embodiment , the pulse signal is generated by detecting the protrusion 39 provided on each of the disks 41, 41a of the one and the other film holders 14 , 14a. May be a concave part, and a disk
41,41a not necessary always provided, for example, be detected component provided in each film holder 14,14a
No.

Furthermore, it shows the second embodiment of FIG. 4 is the invention
It is intended, in the first embodiment, one or the other of the full
Was to detect the fan-shaped plate 36 a attached to the swing arm 32 in Irumu diameter detection sensor 35, 35a, in the present embodiment <br/>, films diameter detecting means, the one and the other film
Each of the holders 14 and 14a can be
The films 3, 3a attached to the lum holders 14, 14a
A pair of feed rollers 16, 16a for pinching and sending
And the feed rollers 16, 16
With the rotation of a, the film diameter of the films 3 and 3a
Encoder 44 that generates a predetermined pulse signal to detect
And the husband of each of the film holders 14 and 14a.
In each case, the rotation of the film holders 14 and 14a is
Rotation detection sensors 40 and 40a that detect
And the film confirmation device includes the encoder
44 and the one or other rotation detection
Comparison with pulse signals output from output sensors 40 and 40a
Between the pulses of the rotation detection sensors 40 and 40a.
When the coder 44 outputs a predetermined number of pulses, it generates a predetermined signal.
Ru configuration near the controller 37 is provided to the raw.

[0033] Thus, for example, it is the encoder 44,
When the circumferential length of 200 mm of feed rollers 16,16a rotate 1, smell when assumed that emits 200 pulses signals
Thus, when the minimum winding diameter d is 100 mm, the circumferential length of the films 3 and 3a is 314 mm.

When the number of protrusions 39 of the disks 41, 41a detected by the rotation detecting sensors 40, 40a is six ,
The length of the one or the other of the fill <br/> beam 3,3a between projections (between pulses) at the minimum diameter d of the one or the other of the films 3,3a becomes 314/6 ≒ 52mm. Therefore, when the encoder 44 emits 52 pulses between the pulses emitted by the protrusion 39, it is possible to know that the minimum diameter of the film 3, 3a is 100 mm.

Therefore, the control device 37 can control one or the other
Between pulses output from the rotation detecting sensor 40, 40a, a predetermined number of pulses, i.e. the 52 pieces of pulse number encoder 44
Is issued, it is determined that the minimum winding diameter d has been reached, and the alarm 42 is actuated.

It should be noted that the present invention is not limited to the above-described embodiment, and an alarm 42 operated by a signal of the control device 37 is provided.
May emit light besides emitting sound, or may control other devices of the packaging machine by a signal of the control device 37.

In the first and second embodiments , the case where the bonding of the films 3 and 3a is performed automatically is exemplified. However, the present invention can also be applied to a packaging machine that is manually operated.
Other components may not be limited to the above embodiment it is of course.

[0038]

As described above, the present invention can be applied to one or the other
One or the other via the swing arm placed on the film
Signal output from one of the film diameter detection sensors
Or each of the signals output from the other rotation detection sensor
Are not one another or the other , or
Predetermined pal generated by the encoder via film feed
Output signal from one or the other rotation detection sensor.
The pulse signal of the rotation detection sensor.
When the encoder outputs the specified number of pulses during
Since the control device for generating a signal is provided,
It is possible not only to prevent the detection error of the remaining amount of one or the other used film from occurring, but also to surely notify the operator that the remaining amount of the used film is low. Therefore, even when the operator is away from the packaging machine, the useless packaging operation by the film breakage is possible to prevent the interruption
It was Tsu optimal to have a particular effect say.

[Brief description of the drawings]

1 is a schematic diagram showing a first embodiment of the present invention.

FIG. 2 is a schematic diagram of the main part.

FIG. 3 is an overall front view of the packaging machine.

Main part schematic view of a second embodiment of the present invention; FIG.

FIG. 5 is a front view showing a conventional example.

[Explanation of symbols]

3,3a ... film, 14,14a ... film holder, 16,
16a ... feed roller, 32 ... swing arm, 35, 35a ... f
Film diameter detection sensor, 37… Control device, 40, 40a… Rotation
Detection sensor, 44 ... encoder over

Claims (3)

(57) [Claims] 1. Films (3) and (3a) are mounted on a pair of film holders (14) and (14a) so as to be able to be fed out, respectively, and are mounted on one of the film holders (14). After using (3), the front end of the other film (3a), which is on standby , can be connected to the rear end of the one film (3) , and the one and other films (3) , (3a)
Film diameter detection that detects when the specified winding diameter is reached
Means a respective film holder (14), in the film checking device in the packaging machine provided with the side (14a), said fill
Beam diameter detection means, each of the film holder (14), (14a)
A swing arm (32) that can be mounted on the winding portion of the one and other films (3) and (3a) attached to the device and that swings with a decrease in the winding diameter of the winding portion ; , The swing arm
A pair of filters provided for each of the film holders (14) and (14a) to detect a predetermined winding diameter via (32).
Lum diameter detection sensor (35) is constructed from a (35a), and <br/> each film holder (14), the people husband (14a) is該Fu
Irumuhoruda (14), rotation detecting that detect rotation (14a)
Sensors (40) and (40a) are provided , and
The film checker is placed on one or the other film (3).
One or the other through the swing arm (32)
Signal output from the
How each of the signals output from the rotation detection sensor
And, or a control unit for generating a predetermined signal when it is not the other each other (37) check device of the film in the packaging machine, characterized in that is provided. 2. One or the other input to said control device (37).
Through the swing arm (32) placed on the other film (3)
Output from one or the other film diameter sensor.
Signal from one or the other rotation detection sensor.
Where each of the two signals is either one or the other
The signal from the film diameter detection sensor stops
In this case, the control device (37) generates a predetermined signal.
The film in the packaging machine according to claim 1, wherein
Confirmation device . 3. Films (3) and (3a) are respectively mounted on a pair of film holders (14) and (14a) so as to be able to be fed out, and are mounted on one of the film holders (14).
After using the film (3), after the other film (3)
Attach the leading end of the other film (3a) that is waiting
One and the other films (3), (3a)
But the film diameter detector, respectively the film holder for detecting to become a predetermined winding diameter (14), in the film checking device in the packaging machine provided with the side (14a), said fill
Means for detecting the film diameter of one and the other of the film holders (1
4) and (14a), and each film
Films (3), (3a) attached to rudder (14), (14a)
A pair of feed rollers (16) for pinching and sending
(16a) , and the feed roller
With the rotation of (16), (16a), the film (3), (3
a) an encoder (44) for generating a predetermined pulse signal to detect the film diameter , and each of the film holders (14) and (14a) has the film holder (1).
4), (you detected by pulse signal rotation 14a) rotation detecting cell <br/> Nsa (40), it is provided with a (40a), moreover said Phil
The system checking device has a predetermined value generated by the encoder (44).
Pulse signal and one or other rotation detection sensor (40), (4
0a) is compared with the pulse signal output from the rotation detection sensor 40. When the encoder 44 outputs a predetermined number of pulses between the pulses of the sensors 40 and 40a , a predetermined signal is output. check device of the film in the packaging machine, characterized by comprising provided to generate a control unit (37).