JPS62259946A - Film patterning splice method in packer or the like and device thereof - Google Patents

Abstract

PURPOSE:To perform film patterning at the time of its splicing in a proper manner, by making adjustments for the position of a register mark detecting device and each position of other apparatuses unnecessary to be done even in the case where the feed measure of a film to be used for packing is altered. CONSTITUTION:After one register mark 7b of a running film 4 is detected by a register mark detecting device 6, the running film is transferred as far as the measure subtracted a film transfer measure La between a stand-by position Y of the register marks 7g at a tip of a stand-by film 4a and a register mark detection position Z from a pitch measure of the register mark 7 or the measure of integral times of the pitch measure. Then, marks 7 and 7c after the mark 7b are situated at a position corresponding to the stand-by position Y of a register mark 7g at a tip of the stand-by film 4a irrespective of a dimensional distance between the register mark detecting device 6 and both splice rollers 3 and 3a. At this time, if these films 4 and 4a are spliced together, proper patterning is performable.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention is directed to a standby film prepared by separately preparing a traveling film (packaging material film) used for packaging in a packaging machine, for example. When joining films,
The present invention relates to a method for joining films in a packaging machine, etc., which allows the patterns of both films to be appropriately matched.

(Prior Art) Conventionally, for example, when packaging work is performed using a packaging machine,
As a means for joining a separately prepared standby film when the remaining amount of running film to be supplied to the packaging machine main body side is reduced, there is a means as shown in FIG. 8, for example.

That is, the means shown in the same figure is such that when the running film 4 is fed out from the film roll 1 to the packaging machine main body side via the splice roller 3, the leading edge of the film 4a of the standby film roll Ia prepared separately is Then, when the remaining amount of the traveling film 4 decreases as shown in FIG. This means that the leading end of the standby film 4a is bonded to the other traveling film 4 by bringing them close to each other.

However, in the film joining means as described above, when both the running film 4 and the standby film 4a to be joined are plain, the joining timing can be any time when the running film 4 decreases. However, if a pattern or the like is printed on both films 4.4a, it becomes necessary to align the register marks displayed at predetermined intervals on both films 4.4a when joining them.

Therefore, conventionally, as a means for matching the patterns at the time of joining, means as shown in FIG. 9 or FIG. 1O, for example, have been adopted.

That is, one of the means shown in FIG.
．． A register mark detecting means 6 is provided in a position forward of 3a so as to be vertically adjustable, and the dimension Lc between the register mark detecting means 6 and the splice roller 3.3a is adjusted to be an integral multiple of the pitch dimension of the register marks 7... This is a means for joining both films 4.4a at the timing when the register mark detection means 6 detects the register mark 7.

The other means shown in FIG. 10 is the splice roller 3.
A movable roller 3 is placed between the register mark detection means 6 and the register mark detection means 6.
0, and by adjusting the position of the movable roller 30, the dimensional distance between the splice roller 3.3a and the register mark detection means 6 is made an integral multiple of the pitch dimension of the register marks 7... Similarly, there is a means for joining both films 4.4a at the timing when the register mark detection means 6 detects the register mark 7.

(Problems to be Solved by the Invention) However, in any of the above conventional means, the dimension between the splice roller 3.3a and the register mark detection means 6 is registered by moving the register mark detection means 6 or the movable roller 30. Since this is a means of setting the pitch dimension to an integral multiple of the pitch dimension of the mark 7..., for example, when a different film is used whose pitch dimension of the register mark is different from the previous one due to a change in packaging work, etc. Of course, each time the film is changed, that is, each time the pitch dimension of the register marks 7... is changed, the register mark detection means 6
Alternatively, the position of the movable roller 30 must be changed to make fine adjustments, making the adjustment work extremely complicated and time-consuming, which is a major problem when changing the packaging work setup. It is.

The present invention was invented in view of the above-mentioned conventional problems, and its purpose is to prevent register mark detection at all even when the film feed dimension, that is, the register mark pitch dimension is changed. There is no need to adjust the position of the means or other equipment to make the mutual dimension between the splice roller and the register mark detection means an integral multiple of the pinch dimension of the register mark, and to properly match the patterns during joining. The point is to make it happen.

(Means for Solving the Problems) The present invention provides a method for joining both films when the register mark on the running film is located at a position corresponding to the register mark on the standby film side while the register mark detection means etc. are fixed. This system was designed to solve the above-mentioned conventional problems by developing means that can perform the following steps.

That is, the gist of the configuration of the film pattern matching and joining method of the present invention is that the register mark detection means 6 provided in front of a pair of splice rollers 3. After detecting the predetermined register marks 7b of the running film 4, the pitch dimension of the register marks 7... of the running film 4 or a dimension that is an integral multiple of the pitch dimension and the standby film waiting on the other splice roller 3a are detected. When the traveling film 4 is transported forward by a dimension Lb that approximately corresponds to the difference between the film transport dimension La from the position Y of the register mark 7g at the tip of the register mark 4a to the register mark detection position gz,
There is a means for joining the standby film 4a to the running film 4.

In addition, the gist of the configuration of the film pattern matching and joining apparatus according to the present invention developed to carry out the above method is that a pulse generator 11 that emits a number of pulses corresponding to the transport dimension of the traveling film 4 is separately provided, and , register mark detection means 6 provided in front of the splice roller 3.3a.
The number of pulses emitted from the pulse generator 1 is repeatedly counted each time the register mark 7 on the running film 4 is detected, and after the register mark detection means 6 detects a predetermined register mark 7b on the running film 4. A control circuit 12 is also provided for outputting an output signal for causing the pair of splice rollers 3.3a to approach each other when the pulse count reaches a predetermined count.

(Function) Therefore, in the film pattern matching and joining method characterized by the above configuration, after the register mark detection means detects one register mark 7b of the running film 4, the pitch size of the register mark 7 or the pitch is determined. Dimension Lb obtained by subtracting the film transport dimension La between the standby position Y of the register mark 7g at the tip of the standby film 4a and the register mark detection position Z from the dimension that is an integral multiple of the dimension.
If the running film 4 is transferred by 1.0, the register mark 7 (7c) after the register mark 7b will be exactly the standby one, regardless of the dimensional distance between the register mark detection means 6 and the splicing roller 3.3a. It will be located at a position corresponding to the standby position MY of the register mark 7g at the leading end of the film 4a. Therefore, if both films 4.4a are joined at that time, each register mark 7 of both cough films 4.4a will be By matching each other, it is possible to perform appropriate pattern matching.

In addition, in the film pattern matching and joining apparatus having the above configuration, the transfer dimension of the running film 4 can be calculated by counting the number of pulses of the pulse generator 11 in the control circuit 12. register mark 7b
The pulse count number at the timing of outputting a signal for causing the splice rollers 3.3a to approach each other from the control circuit 12 after receiving the detection signal of is equal to the pitch dimension of the register mark 7 or an integral multiple of the pitch dimension. If the number of pulses is set to the dimension Lb obtained by subtracting the film transport dimension La between the standby position Y of the register mark 7g at the leading end of the standby film 4a and the register mark detection position Z from the dimension of When the running film 4 is transferred by a predetermined distance Lb after the mark 7b is detected, film joining is performed appropriately, and the film pattern matching and joining method according to the present invention can be executed automatically. .

(Example) Hereinafter, embodiments of the present invention will be described according to an example shown in the drawings.

First, the configuration of the device according to this embodiment will be explained.
In the figure, 1.1a indicates film rolls set in roll holders 2.2a, respectively. 3.3a indicates a pair of splice rollers arranged in parallel between the film rolls 1 and la, and the splice rollers 3.3a
guides the running film 4 fed out from one film roll 1, and guides the running film 4 fed out from the other film roll 1.
This is for waiting the leading end of the film 4a in d, and each splice roller 3.3a is capable of reciprocating in the direction of arrow A. 5.5a indicates a sensor for detecting the end of the film provided at each film transport position between the splice roller 3.3a and each film roll 1.1a, and the sensor 5.5a detects the end of the traveling film. It detects and transmits the detection signal to the outside.

Reference numeral 6 indicates a mark sensor (phototube) which is a register mark detection means according to the present invention and is fixedly provided at a film transport position in front of the splice roller 3.3a. Each time the register marks 7 displayed at intervals are detected, a detection signal is transmitted. 8.8 is the mark sensor 6
A pair of rotatable feed rollers 8.8 are provided at the front of the packaging machine, and these rollers 8.8 are used to transport the running film 4 forward and supply it to the former 1o of the packaging machine main body 9. Reference numeral 11 indicates a pulse generator provided on the drive shaft of one of the feed rollers 8, and the pulse generator 11 generates a 200 ++ pulse when the feed roller 8.8 makes one revolution and the running film 4 is transported by 200 ++n. It is configured to emit a pulse of .

Reference numeral 12 indicates a control circuit connected to the pulse generator 11, the mark sensor 6, and the sensor 5.5a for detecting the end of the film, and the control circuit 12 is connected to the mark sensor 6.
A counter 13 that resets and repeats the count of the number of pulses transmitted from the pulse generator 11 each time a mark detection signal is received from the pulse generator 11, and a setting device 14 that can separately set and input an arbitrary number of pulses from the outside. and a sensor 5.5a for detecting the end of the film.
After receiving the first register mark detection signal after receiving the film end detection signal from one side of the register mark, when counting the number of pulses obtained by subtracting the value set and input to the setting device 14 from the previous pulse count number. The splicing rollers 3.3a are then configured to output a signal to a drive control section of the splicing rollers 3.3a in order to move the splicing rollers 3.3a closer to each other.

The joining device according to this embodiment has the above-mentioned configuration, and the following three
An example of a film pattern matching and joining method using a 51' position will be described.

That is, as shown in FIG. 1, in a state where the film 4 unwound from one film roll l is run by the feed roller 8.8 via the splice roller 3 and transferred to the packaging machine main body 9, the packaging A predetermined packaging operation is performed on the machine body 9 side, and at that time, the control circuit 12 uses the number of pulses generated as the running film 4 is transferred as shown in section A of FIG. 5 to detect the register marks 7... Counting is repeated each time, and the sealing timing of the horizontal sealer 17 of the packaging machine bag 9 can be controlled by this pulse counting operation.

In addition, at this time, the film 4 on the other film roll 1a side
Using double-sided adhesive tape 16, the tip of the splice roller 3a is adhered to the upper part of the splice roller 3a, which is in a stationary state and separated from the one splice roller 3. Note that the most advanced register mark 7 of the standby film 4a
The position Y of g is located, for example, at the top of the splice roller 3a.

Furthermore, the setting device 14 of the control circuit 12 has a film transfer dimension L from the position Z where mark detection is performed by the mark sensor 6 to the register mark g of the standby film 4a.
For example, the number of pulses Na corresponding to the dimension La from the Z position equivalent to a to the top Ya position of the splice roller 3 is 100.
Enter the settings as .

Next, when the running film 4 is consumed and there is no remaining amount of the running film 4 as shown in FIG. 2, the sensor 5 detects the terminal end E of the running film 4. However, at this time, if the control circuit 12 receives the detection signal S of the terminal end E as shown in FIG. The counting operation of the number of pulses generated by the pulse generator 11 is reset and counting of the number of pulses is started again. Further, the control circuit 12 records the number of pulses between the register mark 7b and the previous register mark 7a, that is, the number of pulses N corresponding to the pitch dimension of the register marks. If it is 180, calculate the difference from 100 of the number of pulses Na input into the setting device 15 in advance, and when the number of pulses after the detection of the register mark 7b reaches the calculated value Nb, that is, 80 pulses. Then, a signal T is outputted to bring the splice roller 3a on the standby side closer to the splice roller 3 on the running side.

Therefore, after the register mark 7b is detected by the mark sensor 6 as described above, the dimension La between the mark sensor 6 and the top Ya position of the splice roller 3 is subtracted from the pinch dimension of the register mark 7, as shown in FIG. When the running film 4 is moved forward by the distance Lb, the register mark 7C next to the register mark 7b is exactly located at the top Ya of the splice roller 3, and in this state, the splice roller 3a on the standby side is moved to the running side. By approaching and contacting the splice roller 3 and rotating it by the contact friction, the leading end of the standby film 4a is adhered and joined to the running film 4 via the double-sided adhesive tape 16, as shown in FIG. For example, the register mark 7g on the standby film 4a is superimposed at the same position as the register mark 7c at the final position on the running film 4, so that the patterns of both films 4.4a can be properly matched. be.

In the above embodiment, since the films are bonded after the end E of the running film 4 is detected by the separately provided sensor 5, the tip 'i of the standby film 4a is the final end of the mini running film. However, in the present invention, as described above, means for detecting the end of the running film 4 is not an essential requirement. Instead, for example, the operator may directly recognize the decrease in the remaining amount of the running film 4 and join the films. Therefore, in the present invention, the register mark 7b of the running film 4, which serves as a reference for the timing of bonding, is never used in the running film 4 as in the above embodiment.
The register mark is not limited to the register mark detected immediately after the end of the register mark is detected, and may be arbitrarily selected.

In addition, in the above embodiment, the case is explained in which the film transport dimension a from the mark detection position Z to the register mark g of the standby film 4a is smaller than the pitch dimension of the register marks 7... However, the present invention is not limited thereto; for example, when the dimension La is larger than the pitch dimension as shown in FIG.
After detecting b, both films 4.4a are bonded when the traveling film 4 is transferred by a dimension Lb corresponding to the difference between the dimension 2L and the dimension La, which is an integral multiple of the pitch dimension, for example, twice the pitch dimension. There is nothing wrong with that.

Furthermore, in the above embodiment, the standby film 4
The register mark 7g at the tip of the splice roller 3a is placed on the top of the splice roller 3a, but the present invention is not limited thereto. For example, as shown in FIG. 7g may be located at a rear position Y away from the splice roller 3a.

As described above, the film pattern matching and joining method according to the present invention is by no means limited to the above-mentioned embodiments, and the specific means thereof can be changed within the scope of the present invention. It goes without saying that the pitch dimension of the register marks 7 and other dimensions La, etc. for determining the bonding timing may include errors to the extent that no practical problem occurs.

Further, regarding the apparatus according to the present invention, in the above embodiment, the number of pulses corresponding to the film transport dimension La from the register mark detection position Z to the register mark g of the standby film 4a is manually input to the control circuit 12. At the same time as setting, the pitch dimension of the register marks 7 on the running film 4 is determined by pulse counting, and the difference between the two is calculated by the control circuit 12 itself, but the present invention is by no means limited to this. For example, if both the dimension and La are known, the number of pulses corresponding to the difference between them is calculated in advance and manually set in the control circuit 12, so that when the pulse count number of the control circuit 12 reaches the set input value, There is no problem even if a signal is output to cause the splice rollers 3.3a to approach each other. In short, the control circuit 12 is
Each time the register mark detection means 6 detects the register mark 7 on the running film 4, it repeatedly counts the number of pulses emitted from the pulse generator 11, and
When the number of pulses counted after the register mark detecting means 6 detects a predetermined register mark 7b reaches a predetermined count number, an output signal is output for causing the splice rollers 3.3a to approach each other. It is sufficient if it is configured as follows.

Further, in the device according to the present invention, the specific configuration of each part such as the detection means 6 for detecting a register mark and the pulse generator 11 can be changed in design within the scope of the present invention. The present invention is applicable not only to bonding packaging films used in packaging machines, but also to bonding films in bag making equipment.

(Effects of the Invention) As described above, the film pattern matching and joining method according to the present invention detects a predetermined register mark on a running film, and then detects a pinch size of the register mark or a size that is an integral multiple of the pitch size, This is because the standby film is bonded to the running film when the running film is transported by a dimension approximately equivalent to the difference in film transport dimension from the register mark position of the standby film to the register mark detection position of the running film. In addition, at the timing of joining both films, the next register mark on the running film is always located at a position corresponding to the register mark position on the standby film, regardless of the detected position of the register mark on the running film. The patterns of both films can be matched reliably, and as a result, there is no need to move or adjust the register mark detection means every time the pitch dimension of the register marks is changed, as was the case in the past. A special effect has been achieved in that the work can be done easily and quickly.

Further, the device according to the present invention is provided with a pulse generator that emits a number of pulses corresponding to the transfer dimension of the traveling film 1, and the number of pulses emitted from the pulse generator is determined each time a register mark is detected. A control circuit that repeatedly counts and outputs a signal to operate a splice roller to join both films when the pulse count number after detecting a predetermined register mark on the running film reaches a predetermined count number. Since the control circuit is provided separately, the pulse count number at the timing of outputting a signal for bringing the splice rollers closer to each other can be determined from the pinch dimension of the register mark or an integral multiple of the pinch dimension by the standby film. By setting the number of pulses corresponding to the dimension obtained by subtracting the film transport dimension between the standby position of the register mark at the tip of the register mark and the register mark detection position, the running film is transported by a predetermined distance after a predetermined register mark is detected. The present invention has the advantage that the film pattern matching and joining method according to the present invention can be automated and easily carried out.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing an embodiment of the apparatus according to the present invention. FIGS. 2 to 4 are explanatory diagrams showing an embodiment of the process of the film bonding method according to the present invention. FIG. 5 is an explanatory diagram showing a control process such as pulse counting. FIG. 6 and FIG. 7 are explanatory diagrams showing other embodiments. FIG. 8 to FIG. 10 are explanatory diagrams showing conventional examples. 3.3a... Splice roller 4... Running film 4a...
Standby film 6...Register mark detection means 7...Register mark 11...Pulse generator 12...Control wholesale circuit 12.
・・Control wholesale circuit

Claims (1)

[Claims] 1. A register mark detection means 6 provided in front of a pair of splice rollers 3, 3a detects a predetermined register mark 7b on a running film 4 that is guided by one splice roller 3 and runs forward. After that, the pitch dimension L or an integral multiple of the pitch dimension L of the register marks 7 on the running film 4 and the position of the register mark 7g at the tip of the standby film 4a waiting on the other splice roller 3a are determined. The standby film 4a is joined to the running film 4 when the running film 4 is moved forward by a dimension Lb that approximately corresponds to the difference between the film transport dimension La from Y to the register mark detection position Z. A film pattern matching and joining method in packaging machines, etc. 2. A register mark 7 of the running film 4 is placed in front of a pair of splice rollers 3, 3a for guiding the running film 4 and waiting the standby film 4a.
In a film pattern matching and splicing device in a packaging machine etc., which is provided with a register mark detection means 6 for detecting and outputting a detection signal, a number of pulses corresponding to the transport dimension of the running film 4 is used. A pulse generator 11 is provided for transmitting a pulse, and each time the register mark detection means 6 detects a register mark 7 on the running film 4, the number of pulses transmitted from the pulse generator 11 is repeatedly counted. When the number of pulses counted after the register mark detection means 6 detects a predetermined register mark 7b on the film 4 reaches a predetermined count number,
A film pattern matching and joining device for a packaging machine or the like, characterized in that a control circuit 12 is provided for outputting an output signal for causing the pair of splice rollers 3, 3a to approach each other.