JPH0663748B2 - Detection device and detection method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a side of a strip formed by coating a plurality of metal wires arranged in parallel with a raw rubber material in a longitudinal direction or in a stopped state. The present invention relates to a detection device and a detection method for measuring a side edge rubber width dimension from an end to a metal wire closest to the side end.

[Problems to be solved with conventional technology]

Generally, a cord ply in which metal wires such as steel wires are juxtaposed and covered with rubber is often used for a reinforcing layer such as various fillers that reinforce a belt portion of a tire and a bead portion.

Thus, this cord ply is a rectangular or parallelogram cutting of a long strip shaped by so-called topping and rubber coating on both sides of a sheet substrate on which metal wires are arranged in parallel, by diagonally cutting at a predetermined inclination and width. After forming the pieces, the cut pieces are joined together at the non-cut edges, that is, the so-called ears (side edge rubber) at the side edges to form the elongated strip again.

Therefore, when the topping is performed on the sheet base body, the ear portion, that is, the side edge rubber formed outward from the metal wire located at the outermost end of the juxtaposed metal wires, has a predetermined length during traveling in the longitudinal direction in the topping process. It must be cut in advance in the longitudinal direction while leaving the joint dimension (width) so that the width dimension of the edge of the cut piece (side edge rubber width dimension) becomes the predetermined joint dimension. Immediately after that, it was necessary to measure the width of the side edge rubber of the running belt.

In the past, however, there was no suitable method, and it was performed by visual inspection by an operator or using X-ray. However, the visual inspection is inaccurate, and there are individual differences among workers, and it is difficult to constantly check. In addition, the method of using X-rays has the disadvantages of high equipment cost and safety.

Therefore, it is an object of the present invention to provide a detection device and a detection method capable of detecting the side edge rubber width dimension of a belt running in the longitudinal direction or in a stopped state with high accuracy.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the detection device of the present invention comprises a plurality of metal wires arranged in parallel and coated with a raw rubber material from a side end to a metal wire closest to the side end. A detection device for measuring a side edge rubber width dimension L; a width measurement for irradiating a light beam to detect a distance between a side end and a predetermined part of the band from a side end to a predetermined part of the band. With sensors;
A voltage corresponding to the number of metal wires is provided on both sides of the strip to detect the metal wire / predetermined part distance from the metal line closest to the side end of the strip to the predetermined part. A pair of metal amount detection sensors; and a calculation unit that calculates the side edge rubber width dimension based on the distance detected by the metal amount detection sensor and the distance detected by the width measurement sensor. Is. Further, the detection method of the present invention is a side edge rubber width dimension from a side end of a strip-shaped body formed by coating a plurality of metal wires arranged in parallel with raw rubber material to a metal wire adjacent to the side end. A method for detecting the distance between the side edge of the strip and a predetermined portion of the strip by detecting a distance between the side edge and the predetermined portion of the strip, and the number of metal wires. Based on a metal amount detection sensor that generates a voltage according to the above, the metal wire / predetermined part distance from the metal line closest to the side end of the strip to the predetermined part is detected, and then the side end / predetermined part The width of the side edge rubber is detected by subtracting the distance between the metal wire and the predetermined portion from the distance between the portions.

[Work]

According to the detection method and apparatus according to the present invention, the width measuring sensor detects the distance from the side end of the strip in running or in the stopped state to the predetermined portion of the strip, and
With the metal amount detection sensor, it is possible to detect the distance from the metal line closest to the side edge of the strip to the above-mentioned predetermined portion. Further, in the calculation unit, from the detection distance from the width measurement sensor to the metal amount detection sensor. By subtracting the detection distance, the side edge rubber width dimension is detected.

Further, the desired side edge rubber width dimension (joint width) can be obtained by finely adjusting the cutting amount of the side edge rubber of the belt-shaped body from the measured side edge rubber width dimension.

〔Example〕

Hereinafter, embodiments will be described with reference to the drawings. FIG. 3 shows a strip 3 (see FIG. 1A) in which a plurality of metal wires 1 arranged in parallel (see FIG. 1A) are covered with a raw rubber material 2 (see FIG. 1A). A manufacturing apparatus for producing the same is shown. The manufacturing apparatus includes a delivery roll 4 on which a plurality of metal wires 1 arranged in parallel are wound, and a raw rubber material 2 on the metal wires 1 delivered from the delivery roll 4. A topping calender 5 for coating the strip-shaped body 3 and a cutter 7 for cutting both side edge rubbers of the strip-shaped body 3 fed from the calender 5 with a predetermined joining dimension (width) left, and the cutter 7. Side edge rubber width dimension L (first A
The detection device 8 according to the present invention for measuring (see the drawing) and a winding roll 9 for winding the band-shaped body 3 are provided. In Fig. 3,
Reference numeral 10 is an adjusting mechanism for adjusting the amount of the metal wires 1 ... Detected from the delivery roll 4 to the topping calendar 5,
Is a cooling drum. The metal wires 1 ... Are arranged in parallel and wound around the delivery roll 9.

Therefore, as shown in FIGS. 1A and 1B, the detection device 8 has a distance (side end / predetermined portion distance) l ₁ from the side end 12 of the strip 3 to the predetermined portion S of the strip 3. The distance measuring sensor 13 for detecting the distance from the metal wire 1 closest to the side end 12 of the strip 3 to the predetermined portion S (metal wire / predetermined portion distance) l ₂
Eddy current displacement sensor as a pair of metal amount detection sensors 14, 14 for detecting a metal wire with a side end / predetermined portion distance l ₁
The calculation unit 15 (see FIG. 2) that calculates the side edge width dimension L based on the predetermined part distance l ₂ . A high frequency sensor may be used as the metal amount detection sensor.

Here, the width measurement sensor 13 is, for example, a laser type discrimination sensor, and an irradiation unit 16 that irradiates a laser beam,
A light receiving section 17 for receiving a laser beam from the irradiation section 16 is provided, and the distance l ₁ between the side edge and the predetermined portion is detected by the amount of light shielded by the object. That is, since the irradiation width dimension of the laser beam is constant, the light-shielding dimension can be detected by extracting the light-shielding amount by the object as the output of the analog-growing in a predetermined range. Specifically, in the embodiment, the irradiation width dimension is 10
mm, and the predetermined range of sensor output is 1V to 5V. Therefore, the data as the graph shown in FIG. 4 is input, and the light-shielding dimension l ₁ (that is, the distance between the side end and the predetermined portion) is detected from the detection power between 1V and 5V. In addition, width measurement sensor
Needless to say, 13 is not limited to the laser type discrimination sensor.

Next, the metal amount detection sensor 14 outputs a voltage proportional to the distance to the object (strip 3), and the metal wire 1
The voltage is generated according to the number of. That is, the relationship between the output voltage and the metal wire / predetermined portion distance l ₂ is obtained and input, and the metal wire / predetermined portion distance l ₂ is detected from the detected output voltage.

That is, FIG. 5 shows a relationship curve between the output voltage and the distance l ₂ between the metal wire and the predetermined portion when the distance H from the strip 3 to the metal amount detection sensor 14 is changed within the range of 1 mm to 7 mm. ,
x-axis represents a metal wire-predetermined portion distance l _2, y axis represents the output voltage. When the distance H is, for example, 3 mm, a reference position (that is, a total of 6 mm of the distances H of the upper and lower metal amount detection sensors 14 and a thickness of 1 mm of the strip 3 is a total of 7 mm, and a pair of upper and lower sensors are provided. 14,14 are fixed.) The relational expression of the graph shown in FIG. 5 is y = ax + bx
^It can be approximated by ³ + c. a, b, c are constants.

Then, if the belt-like body 3 running in the longitudinal direction (that is, the arrow X direction in FIG. 1B) from the above-mentioned reference position is displaced downward by 1 mm due to fluctuations (vertical swing or variation in thickness), The upper sensor 14 detects this and outputs the voltage V ₁ , and the lower sensor 14 detects this and detects the voltage V ₂ . Then, a point _{P 1} and _{P 2} on the reference curve at the output level and _{V 2} of the output level of _{V 1,} then
A point Q that is ½ of these two points (straight line portion) is obtained, and the distance l ₂ between the x-axis metal line and the predetermined portion is calculated from this point Q.
The upper and lower sensors 14 and 14 are displaced in the longitudinal direction as shown in FIG. 2 so as not to interfere with each other. Further, in FIG. 5, I shows the case where the distance H is 1 mm, and I
I shows the case of 2 mm, III shows the case of 3 mm, and IV shows the case of 4 mm
, V shows the case of 5 mm, VI shows the case of 6 mm, and VII shows the case of 7 mm.

Then, the calculating unit 15 calculates the side edge width dimension L by subtracting the metal wire / predetermined part distance l ₂ from the side end / predetermined part distance l ₁ . That is, as shown in FIG. 2, the data from the respective sensors 13, 14, 14 are transferred to the computer via the A / D converter 18.
The data is input to 19 and processed by the computer 19. The computer 19 is also provided with a recording unit 20, a display unit 21, and a cutter 7 control unit 22.

Next, a method for manufacturing the strip-shaped body 3 using the detection device 8 configured as described above will be described.

First, a large number of metal wires 1, ... Aligned and delivered from a delivery roll 4 are supplied to a topping calendar 5 via an adjusting mechanism 10, where a raw rubber material 2 is coated to form a band-shaped body 3. There is. Next, the strip 3 is cut by the cutter 7.
After passing through, the excess rubber on both side edges is cut leaving a predetermined joining dimension, and then passes through the detection device 8, and the strip-shaped body 3 is measured for the remaining side edge rubber width dimension L and cooled. It is wound around the winding drum 9 via the drum 11.

Then, according to the detection device 8, the belt 3 which is running in the longitudinal direction (the direction of the arrow X) is irradiated with a laser beam to detect the side end / predetermined portion distance l ₁ and the metal amount detection sensor. Based on 14,14, the distance between the metal wire and the specified part l ₂
Is detected, and then the side edge rubber width dimension L after cutting is detected by subtracting the metal wire / predetermined portion distance l ₂ from the side edge / predetermined portion distance l ₁ . The side edge rubber width dimension L can be detected by the same method with respect to the strip 3 in the stopped state.

Further, the detection device 8 operates according to the flowchart shown in FIG.

That is, since the strip 3 to be detected has different side edge width dimensions L and metal amounts (thickness and number) for each strip 3,
Data for determining the distance l ₁ between the side edge and the predetermined part (4th
(See the drawing) and the data (see FIG. 5) for obtaining the distance l ₂ between the metal wire and the predetermined portion are different for each strip 3. Therefore, the set value of the side edge width dimension L, the name of the belt-shaped body 3 to be detected, and the above-mentioned data are input in advance. Then, if the detection device 8 operates and is normal (means that the detected side edge width dimension L and the set value of the strip are the same), the detected side edge width dimension L is detected. Is recorded in the recording unit 20 shown in FIG.
Displayed at 21. In addition, an abnormality (refers to the case where the detected side edge width dimension L and the set value of the strip 3 are different).
In this case, an error is displayed on the take-up roll 9 and a signal is fed back to the moving mechanism in front of and behind the cutter 7, and the control unit 22
Finely adjust the cutting width by the cutter 7 to adjust the side edge width L
Is a predetermined dimension.

Therefore, if the belt-shaped body 3 is manufactured using this detection device 8, the side edge rubber (ears) is cut so that the side edge rubber width dimension L for joining becomes a predetermined dimension. Become.

The present invention is not limited to the above-described embodiments, and can be freely changed without departing from the scope of the present invention. For example, the irradiation width dimension of the width measurement sensor 13 is limited to 10 mm as in the embodiments. Also, the output voltage of the width measuring sensor 13 is not limited to the range of 1V to 5V. Furthermore, a metal amount detection sensor
The distance H between 14 and the strip 3 is not limited to the range of 1 mm to 7 mm.

〔The invention's effect〕

 The present invention has the following effects.

According to the detection method and apparatus of the present invention, the side edge rubber width dimension L of the belt-like body 3 which is running or stopped in the longitudinal direction can be automatically detected with high accuracy, and X-rays are not used. It is not expensive and safe.

Further, since the side edge rubber width dimension L can be constantly detected during traveling in the longitudinal direction, it is possible to prevent an abnormality (when the side edge rubber width dimension L is different from the set value) from being overlooked, and
Since the detected value can be fed back to the cutter 7 to control the cutting amount, the side edge rubber width dimension L can be made uniform, and a uniform joint dimension can be obtained, and the product becomes stable.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1A is a front view of an essential part of an embodiment of a detection device according to the present invention, FIG. 1B is a perspective view of the detection device, FIG. 2 is a block diagram,
FIG. 3 is a simplified diagram of a strip manufacturing apparatus in which this detection device is used, FIG. 4 is a graph showing the relationship between the light-shielding dimension of the width measurement sensor and its output voltage, and FIG. 5 is the output of the metal amount detection sensor. FIG. 6 is a graph showing the relationship between the voltage and the distance between the metal wire and the predetermined portion, and FIG. 6 is a flow chart showing the operation of the detection device. 1 ... Metal wire, 2 ... Raw rubber material, 3 ... Band, 12 ...
Side edge, 13 ... Width measurement sensor, 14 ... Metal amount detection sensor,
15 …… Calculator, l ₁ …… Side edge / predetermined part distance, l ₂ …
… Metal wire / predetermined part distance, L …… side edge width dimension, S ……
Predetermined part.

Claims (2)

[Claims] 1. A side end 12 to a side end 12 of a belt-shaped body 3 formed by coating a plurality of metal wires 1 arranged in parallel with a raw rubber material 2.
Is a detection device for measuring a side edge rubber width dimension L up to the metal wire 1 closest to the strip 3 by irradiating a light beam from the side end 12 of the strip 3 to the strip 3
A width measuring sensor 13 for detecting a side end / predetermined portion distance l ₁ to the predetermined portion S, and a voltage corresponding to the number of metal wires 1 which are arranged on both surface sides of the strip 3 to generate a voltage. Metal wire 1 from the metal wire 1 closest to the side end 12 of the strip 3 to the above-mentioned predetermined portion S and the distance l between the predetermined portions
_Based on the pair of metal amount detection sensors 14 and 14 that detect ₂ and the distance l ₂ detected from the metal amount detection sensors 14 and 14 and the distance l ₁ detected from the width measurement sensor 13. A detection device comprising: a calculation unit 15 for calculating the edge rubber width dimension L; 2. A side end 12 to a side end 12 of a belt-shaped body 3 formed by coating a plurality of metal wires 1 arranged in parallel with a raw rubber material 2.
Is a detection method for measuring the side edge rubber width dimension L up to the metal wire 1 closest to the strip 3 by irradiating the strip 3 with a light beam and from the side end 12 of the strip 3 to a predetermined portion of the strip 3. Based on the metal amount detection sensor 14 that detects the distance l ₁ between the side edge to S and the predetermined portion and that generates a voltage according to the number of the metal wires 1, the side edge of the strip 3
The metal wire-predetermined portion distance l ₂ to the predetermined region S is detected from the nearest metal wire 1 to 12, after which the metal wire-predetermined portion distance l ₂ from the end-predetermined portion distance l ₁ A method for detecting, wherein the side edge rubber width dimension L is detected by subtraction.