JP2748760B2 - Inspection device for both sides of adhesive tape for connecting web sheets - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method of unwinding a web sheet for printing or a wound web sheet after processing such as printing, and cutting a defective web sheet at a location where a material defect or processing defect occurs into a certain length. Cut and remove over the entirety, butch the end of the non-defective web sheet of the non-defective product sheet and the end of the non-defective web sheet of the non-defective web sheet into a good product web sheet, and attach the adhesive tape to the butt portion to join. The present invention relates to a web sheet joining adhesive tape attachment presence / absence inspection device for judging whether or not the adhesive tape is correctly attached to both the front and back surfaces of the web sheet at the joining point when wound up as a good product web sheet. .

[0002]

2. Description of the Related Art Conventionally, when a material defect or a processing defect has occurred on a printing web sheet or a sheet in the middle of a wound web sheet after processing such as printing, as shown in FIG. Then, while rewinding the wound web sheet A in the direction of the arrow and winding it to the B side, the defective web sheet C at the location where the material defect or the processing defect has occurred is cut by a certain length between the cutting lines C ₁ and C _2. Cut and remove over time.

Subsequently, as shown in FIG. 7 (b), the non-defective web sheet end 1 from which the defective web sheet C has been removed and the non-defective web sheet end 2 on the rolled-up web sheet A side are butted together. Adhesive tape 3 is adhered along the location, and both ends 1 and 2 are joined together, and sequentially wound up as a good-quality web sheet B in a rolled shape. D indicates a connecting point.

In this case, as shown in FIG. 7 (c), the adhesive tape 3 is stuck along the abutting portion on one side of the end portions 1 and 2 of the web sheet, or FIG.
As shown in (d), an adhesive tape 3 and an adhesive tape 4 are adhered to opposing positions on the front and back surfaces of the web sheet along abutting portions of the end portions 1 and 2 of the web sheet. , 4 are 0.05mm to 0.15m thick
The tape is made of paper or a synthetic resin film having a length of about m, and a pressure-sensitive adhesive or a heat-sensitive adhesive is appropriately applied to the back surface of the adhesive tape.

[0005]

The above-mentioned operation of sticking the adhesive tape is performed manually, and when sticking to one side of the end portions 1 and 2 of the web sheets and joining them together, the sticking of the adhesive tape is performed. Forgotness can be immediately confirmed by not being connected.

However, as shown in FIG. 1C, when the adhesive tapes 3 and 4 are attached to the front and back surfaces of the end portions 1 and 2 of the web sheet for joining, any one of the joining points D is used. It is easy to forget to adhere the adhesive tape 3 or the adhesive tape 4 to one side, and it is difficult to confirm that the adhesive tape 3 or the adhesive tape 4 has been forgotten to be adhered at the joining point D after being wound on the rewind B side. .

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned disadvantages, and in bonding a web sheet end portion using an adhesive tape, an adhesive tape is correctly adhered to both front and back surfaces along a connecting portion of the web sheet end portion. It is intended to inspect and determine whether or not the operation is performed.

[0008]

SUMMARY OF THE INVENTION According to the present invention, a defective web sheet C is cut and removed, and adhesive tapes 3 and 4 are attached and joined along abutting portions on both front and back surfaces of joining ends 1 and 2, respectively. Ultrasonic sensors 10 and 11 for detecting the abutting portions of the joining ends 1 and 2 facing the front and back of the joined good-quality web sheet B, and for monitoring an adhesive tape for detecting the presence or absence of the adhesive tapes 3 and 4 Sensor 1
2, 13 and the illuminating light sources 14 and 15 for illuminating the front and back surfaces of the non-defective web sheet B, respectively, and are bonded along the abutting portions on both the front and back surfaces of the joining end portions 1 and 2 based on the detection signals from the sensors. A judgment control means 16 for judging whether or not the tapes 3 and 4 are stuck is provided.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to embodiments.
FIG. 1 shows an embodiment of the apparatus of the present invention, in which a wound web sheet A (for example, the thickness of the sheet A is 0.05 mm to 0.5 m).
m) of the defective web sheet C is cut and removed, and the joining end portions 1 and 2 of the good web sheet are abutted to each other, and the adhesive tapes 3 and 4 are attached to the front and back along the joining end portions 1 and 2. (Adhesive tape thickness 0.05mm ~
Non-defective web sheet B from which defective web sheet C is removed
Is sent from the right to the left in the drawing.

[0010] The good web sheet B to be sent is
Is a non-defective web that is cut and removed from the defective web sheet C while rewinding the non-defective web sheet A, and then once wound up as a non-defective web sheet B in a rewind state, and then rewinded and fed again. Although the sheet B is used, in the present invention, the defective web sheet C may be directly sent as a good web sheet B without being wound after being cut and removed. The front and back sides of the non-defective web sheet B are separated from each other, and the presence or absence of the adhesive tape 3 or the adhesive tape 4 or both the adhesive tapes 3 and 4 is detected in order from the upstream side in the transport direction to the downstream side in order. An ultrasonic sensor 10 for detecting passage, a sensor 12 for monitoring an adhesive tape,
13 and illumination light sources 14 and 15 (visible light such as white light, or invisible light such as ultraviolet light and infrared light).

In the present invention, as the ultrasonic sensor, a reflection type or transmission type sensor can be used.
In one embodiment, a projection-side ultrasonic sensor 10 that projects ultrasonic waves onto the surface of a non-defective web sheet B to be sent.
And an ultrasonic sensor 11 on the sound receiving side on the opposite side across the web sheet B.

The ultrasonic sensor 11 on the sound receiving side includes a connection point detection controller 20 which outputs a logical 0 signal when the connection point D is not detected and outputs a logical signal 1 every time the connection point D is detected. When the ultrasonic sensors 10 and 11 detect the average thickness portion (thickness of the main body of the web sheet) of the non-defective web sheet B to be sent in close proximity thereto, the connection point detection controller 20 outputs a pulse. Is not output, and every time a connection point D (a thick part) is detected, a fluctuating detection waveform is captured and one pulse is output.

The adhesive tape monitoring sensors 12 and 13 are:
A linear CCD sensor, an LED sensor, etc. can be used.
The case where the D sensor is used will be described. The adhesive tape monitoring sensors (linear CCD sensors) 12 and 13 installed on the front and back of the non-defective product web sheet B respectively include the adhesive tape 3 or the adhesive tape 4 attached to the joining point D detected by the sensors. Detects color tone and amount of reflected light.

Each of the linear CCD sensors 12, 1
Reference numeral 3 indicates that a logical 0 signal is generated while the color tone and the reflected light amount specific to the adhesive tapes 3 and 4 are not detected, and a logical signal is generated every time the color tone and the reflected light amount specific to the adhesive tapes 3 and 4 are detected. And a controller 21 for judging the presence / absence of adhesion of the adhesive tape to the front and back sides, in which both sensors 12 and 13 are connected to an AND circuit.
Also, a connection point detection signal generated by the connection point detection controller 20 and the controller 21
A front and back sticking abnormality signal output unit 22 which inputs a front and back sticking abnormality signal which is generated and generates a front and back sticking abnormality signal is provided.

And the connection point detection controller 20;
The adhesive tape front / back sticking presence / absence judgment controller 21 and the front / back sticking abnormality signal output device 22 constitute the adhesive tape front / back sticking presence / absence judgment control means 16.

As an embodiment of the present invention, FIG.
As shown in the figure, the front and back sticking abnormality signal output device 22 is provided with alarm output means 30 such as a buzzer and a lamp display, and the adhesive tape front / back sticking presence / absence judgment controller 21 is provided with an alarm output means 31 for sticking only the front side. , The alarm output means 32 attached only to the back side.

As shown in FIG. 1, if necessary, the connection point detection controller 20 has a counter 40 for counting the number of times the connection point D is detected. , Adhesive tapes 3 and 4 are good web sheets B
A counter 41 for counting the number of times of output of a front and back sticking abnormality signal that informs that the front and back sides are not stuck together at the same time.
The counter 42 counts the number of times of output of the sticking signal only on the front side informing that the adhesive tape 3 or 4 is stuck only on the front side of the non-defective web sheet B. And a counter 43 that counts the number of times of output of the sticking signal only on the back side informing that the sticking is performed only on the back side.

FIG. 2 shows an ultrasonic sensor 10 (particularly the ultrasonic sensor 11 on the sound receiving side) for detecting a connecting point in one embodiment of the apparatus of the present invention, and affixed to the front and back of a good-quality web sheet B for connecting. Front and back adhesive tape monitoring sensors 12 for monitoring the presence or absence of an adhesive tape to be performed,
13 schematically shows a detection sensor system circuit diagram of the device of the present invention comprising 13 (CCD sensor or LED sensor).

According to FIG. 2, the ultrasonic sensor 11 includes:
F. holding a logic signal via a NOT circuit that inverts the detection signal A connection point detection controller 20 to which an F (flip-flop) circuit is connected is provided. 23. The input terminal for resetting the F circuit, the ultrasonic sensor 11
The detection signal at the connection point D by F. Once held by the F circuit, the detection signal at the connection point D is linked with a rotary encoder that follows the rotation of a feed infeed roller or an outfeed roller (not shown) that feeds and feeds a non-defective web sheet B to the apparatus main body. The holding setting of the connection point detection holding signal can be reset at a predetermined timing by an operation or the like. In the present invention, the reset operation can adopt an appropriate method.

The front and back adhesive tape monitoring sensor 12,
13 is connected to the input side of the AND circuit. Further, a connection point detection controller 20 and an adhesive tape front / back adhesion presence / absence determination controller 2
1 is connected to the input side of the AND circuit, and NO
Front and back sticking abnormality signal output device 22 with T circuit connected to output side
Is provided.

As another embodiment of the device of the present invention, as shown in FIG. 3, a data output display means 70 is provided, and the count of the number of times of detection of the connection point is determined by a CRT.
A count output display means 50 for displaying an output on a display or a printer, and a memory means 60 for recording the count number as necessary, and the number of the connection point where the front and back sticking abnormality signal is detected is generated. Rank (number)
And a memory means 61 for recording the output order, if necessary, for displaying the output order on a CRT display or a printer.
A front-side sticking abnormality occurrence order output display means 5 for displaying the sticking occurrence order where the adhesive tape is stuck only on the front side of the non-defective web sheet B on a CRT display, a printer, or the like.
2 and, if necessary, a memory means 62 for recording the output order, and a back side for outputting and displaying on a CRT display, a printer, or the like the order in which the adhesive tape has been applied only on the back side of the good-quality web sheet B. It comprises a sticking abnormality occurrence order output display means 53 and a memory means 63 for recording the output order as required.

FIG. 4 is an operation timing chart of the detection sensor system of the apparatus of the present invention. FIG. 4 shows a detection signal of the connection point D by the ultrasonic sensor 11 and an F.F. A connection point detection holding signal output via the F circuit; a front side adhesive tape monitoring detection signal by the front side adhesive tape monitoring sensor 12; a back side adhesive tape monitoring detection signal by the back side adhesive tape monitoring sensor 13; The timing of generating an abnormal signal (in a state where the adhesive tape is not adhered to both the front and back surfaces at the connecting point D of the good-quality web sheet B, that is, in a state where the adhesive tape is adhered to only one of the front and back surfaces) is set. It is shown.

In FIG. 4, a signal (pulse signal a)
And a signal (pulse signal b as a detection signal of the adhesive tape stuck on the front side by the adhesive tape monitoring detection sensor) and a signal (pulse as a detection signal of the adhesive tape stuck on the back side by the adhesive tape monitoring detection sensor) When both the signal c) and the signal c) are output at the same time as the signal pulse, the front and back sticking abnormality signal is not output. The number of occurrences of the pulse signal a is counted by the counter 40, the number of non-generations of the pulse signal b is counted by the counter 42, and the number of non-generations of the pulse signal c is counted by the counter 43.

The signal (pulse signal a), the signal (pulse signal b) and / or the signal (pulse signal c), or both of them (pulse signals b and c)
Are not output, the signals d, e, and g are output as the front and back sticking abnormality signals, respectively, and the total number of occurrences of the signals d, e, and g is counted by the counter 41.

FIG. 5 shows another embodiment of the detection sensor system of the apparatus according to the present invention, wherein one side of an AND circuit of the front and back sticking abnormality signal output device 22 has a NOT circuit 24 attached to the front and back of the adhesive tape. Connect the output terminal of the wearing presence / absence judgment controller 21 and use the front side adhesive tape monitoring sensor (linear type CC).
D sensor) 12 and back side adhesive tape monitoring sensor (linear CCD sensor) 13
It is connected to an AND circuit 26 via T circuits 25, 25, and the output terminal of the AND circuit 26 is connected to the connection point detection controller 2
F. 0 The F circuit output terminal is connected to an AND circuit 27, and the output terminal of the AND circuit 27 is provided with an alarm output means 33 as a sensor abnormality signal alarm for notifying the abnormality of the detection sensor system, and the number of outputs of the alarm signal if necessary. Is connected to a counter 44 for counting.

FIG. 6 is an operation timing chart when the detection operation is performed by the detection sensor system shown in FIG. 5, and the signal (pulse signal b) and the signal (pulse signal c) are shown.
Are not output, a non-detection signal (pulse signal f) is output via the AND circuit 26 on both front and rear sides, and the non-detection signal is output at the output timing of the signal (pulse signal a). Is for generating a sensor abnormality signal (pulse signal g) for notifying the sensor abnormality of the detection sensor system, and for operating the alarm output means 33 for informing the sensor abnormality on the basis of the sensor abnormality signal to generate an alarm. is there.

[0027]

According to the inspection apparatus of the present invention, the end portions of a good-quality web sheet after cutting and removing a defective portion of a wound web sheet over a desired length are butt against each other, and an adhesive tape is applied along the butt portion from both front and back surfaces. Paste and join,
When a good-quality web sheet B in the form of a roll is to be obtained, the ultrasonic sensors 10 and 11 for detecting the thickness are provided so as to be spaced apart from and face the transporting sheet surface of the joined good-quality web sheets B.
Is provided, the tape joining point can be detected by detecting a change in the thickness of the web sheet including the thickness of the adhesive tape stuck to the joining point.

Further, since the adhesive tape monitoring sensors 12 and 13 are provided opposite to the front and back sides of the ultrasonic sensors 10 and 11 on the downstream side in the web sheet feeding direction, the adhesive tapes are correctly provided on both the front and back sides of the web sheet B. Whether or not it is attached can be easily detected.

Further, it is possible to easily detect which of the front and back surfaces of the web sheet B has the adhesive tape stuck.

[0030]

According to the inspection apparatus of the present invention, the end portions of the non-defective web sheet after cutting and removing the defective portion of the wound web sheet over a desired length are butt against each other, and an adhesive tape is applied along the butt portion. In order to obtain a good wound web sheet B by attaching and joining, it is necessary to check that the adhesive tape for joining is correctly adhered to the relative positions of the front and back surfaces of the web sheet B, and inspected. This makes it possible to easily determine whether the user has forgotten to attach the adhesive tape.

[Brief description of the drawings]

FIG. 1 is a schematic side view of an embodiment of the inspection apparatus of the present invention.

FIG. 2 is a circuit diagram of a detection sensor system in an embodiment of the inspection apparatus of the present invention.

FIG. 3 is a circuit diagram of a detection sensor system in another embodiment of the inspection apparatus of the present invention.

FIG. 4 is a timing chart of a detection operation of a detection sensor system in an embodiment of the inspection apparatus of the present invention.

FIG. 5 is a circuit diagram of a detection sensor system in another embodiment of the inspection apparatus of the present invention.

FIG. 6 is a timing chart of a detection operation of a detection sensor system in another embodiment of the inspection apparatus of the present invention.

FIG. 7A is a perspective view showing a defective portion of a web sheet in a conventional web sheet joining operation using an adhesive tape. (B) It is a perspective view which shows the conventional example to which the adhesive tape was stuck along the butting part of the edge part of the web sheet after cutting and removing the defective part. (C) is a side view showing a conventional example in which an adhesive tape is adhered to one side of a butt portion of a web sheet. (D) is a side view showing a conventional example in which adhesive tapes are adhered to both front and back surfaces of abutting portions of a web sheet.

[Explanation of symbols]

A ... winding Tojo web sheet B ... winding Tojo good web sheet C ... poor web sheet C _1, C ₂ ... cutting line D ... joining points 1 ... web sheet edge 2 ... web sheet edge 3 ... adhesive tape 4 ... Adhesive tape 10 ... Ultrasonic sensor 11 ... Ultrasonic sensor (sound receiving side) 12,13 ... Adhesive tape monitoring sensor
14, 15 illumination light source 16 front / back sticking presence / absence determination control means 20 joining point detection controller 21 adhesive tape front / back sticking presence / absence determination controller 22 front / back sticking abnormal signal output device
23: reset signal input terminal section 30, 31, 32, 3
3. Alarm output means 40, 41, 42, 43, 44 ... Counter

Claims (1)

(57) [Claims] 1. A non-defective web sheet B which is cut and removed, and adhesive tapes 3 and 4 are respectively adhered along the abutting portions on both the front and back surfaces of the joint end portions 1 and 2 to be joined. Ultrasonic sensor 1 for detecting the abutting point of the joining ends 1 and 2 at a distance from each other
0, 11; adhesive tape monitoring sensors 12 and 13 for detecting the presence or absence of the adhesive tapes 3 and 4; illumination light sources 14 and 15 for illuminating the front and back surfaces of the good-quality web sheet B; A determination control unit for determining whether or not the adhesive tapes are adhered along the abutting portions on the front and back surfaces of the joining ends based on the web sheet. Inspection device for both sides of adhesive tape for connection.