JPH1119958A - Method for controlling bank quantity, roll kneader used in it, and roll kneader group - Google Patents

Abstract

PROBLEM TO BE SOLVED: To control the bank amount of rubber between rolls precisely by detecting the cut-out side edge of a rubber sheet which was kneaded while being wound onto one roll of a roll kneader and regulating the amount of rubber supplied between the rolls by the quantity of deviation between its edge position and a standard position. SOLUTION: The cut-out side edge E of a rubber sheet R1 which was kneaded while being wound onto one roll 10a is detected by an edge detecting means 13. The signal is received, and the quantity of deviation between its edge position and a standard position set up corresponding to the proper amount of rubber R which was kneaded in advance is obtained by a control means 20. Based on the deviation, the amount of rubber supplied between rolls 10a, 10b is regulated to control the bank amount. Even when the shapes of supplied rubber blocks on the bank between the rolls 10a, 10b are various and complex, since a proper bank amount can be measured irrespective of the shapes, the bank amount can be controlled precisely.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling the amount of bank of rubber supplied between the rolls of a roll kneading apparatus for kneading rubber with high accuracy, and a roll kneading apparatus used therefor. And a group of roll kneading devices.

[0002]

2. Description of the Related Art Generally, rubber is kneaded by supplying rubber between a pair of left and right warming rolls and winding the rubber around one of the warming rolls in a sheet form. The kneaded rubber sheet is cut into a strip from one end. In such a kneading step, it is extremely important to make the amount of rubber supplied between the rolls, that is, the amount of supplied rubber constant, for uniform kneading.

Conventionally, such control of the bank amount is performed by directly detecting the rubber bank amount between the rolls using a sensor such as a television camera, and controlling the bank amount on the supply side so as to keep it at a predetermined constant value. I was trying to give feedback. However, since the mass of rubber supplied between the rolls is irregular and has a complicated shape, it is difficult to accurately detect the amount of the mass, and there is a problem that fluctuation of the bank amount cannot be avoided. Was.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a bank amount control method capable of accurately controlling a bank amount of rubber supplied between rolls, a roll kneading apparatus and a roll kneading apparatus used therefor. It is to provide a device group.

[0005]

In order to achieve the above object, a bank amount control method of the present invention detects a cut-out edge of a kneaded rubber sheet while winding it around one roll of a roll kneading apparatus for kneading rubber. The amount of rubber supplied between the rolls of the roll kneading device is adjusted based on the amount of deviation between the edge position and a preset reference position, and the amount of bank between the rolls is controlled.

Another bank amount control method of the present invention is as follows.
A plurality of roll kneading devices for kneading the rubber are provided, and when kneading and cutting out the rubber sequentially from the upstream to the downstream roll kneading device, the kneaded rubber sheet is wound while being wound around one roll of the roll kneading device. Each of the cut-out edges is detected, and the downstream roll is adjusted by adjusting the cut width of the rubber strip cut from the one roll kneading device on the upstream side according to the shift amount between the edge position and the preset reference position. It is characterized in that the amount of rubber bank between the rolls in the kneading device is controlled.

Further, the roll kneading apparatus of the present invention is a roll kneading apparatus for kneading a rubber while winding it around one of a pair of right and left rolls in a sheet shape.
A cutter for cutting the kneaded rubber sheet into a rubber strip and an edge detecting means for detecting a cut-side edge of the kneaded rubber sheet are respectively provided in pairs, and the edge position is set in advance by receiving a signal from the edge detecting means. A control means is provided for adjusting the amount of rubber supplied between the pair of rolls based on the amount of deviation from the reference position and controlling the amount of rubber bank between the rolls.

In the roll kneading apparatus group of the present invention, a plurality of roll kneading apparatuses for kneading while kneading rubber in a sheet shape around one of a pair of right and left rolls are installed, and the roll kneading apparatuses are sequentially arranged from the upstream side to the downstream side. In a group of roll kneading devices that knead and cut out and supply rubber, a cutter that cuts the kneaded rubber sheet into a rubber strip can be moved along the rolls, facing one roll of each roll kneading device. And a pair of edge detecting means for detecting a cut-out edge of the rubber sheet kneaded on one of the rolls. The edge detecting means receives a signal from each edge detecting means, and receives the edge position and a predetermined reference. The cutting width of the rubber strip to be cut out is adjusted by moving the cutter of the roll kneading device on one upstream side according to the amount of deviation from the position, and And controlling the bank of the rubber between the rolls of Lumpur kneading apparatus.

As described above, according to the present invention, the cut side edge of the rubber sheet kneaded while being wound around one of the rolls is detected, and the roll kneading apparatus is determined based on the amount of deviation between the edge position and a preset reference position. Since the amount of rubber supplied between the rolls is controlled to control the amount of bank, even if the shape of the lump of rubber supplied between the rolls is complicated, the amount of bank can be accurately controlled. Therefore, uniform kneading can always be performed.

Further, when a plurality of roll kneading devices are provided, and the rubber is kneaded and cut out and supplied sequentially from the upstream side to the downstream side, the cut-out edges of the kneaded rubber sheet while being wound around one roll are respectively detected. From the amount of deviation between the edge position and the reference position, by adjusting the cut width of the rubber strip of the upstream roll kneading device immediately before, so as to supply, between each roll kneading device,
It is possible to control the bank amount with high accuracy.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below in detail with reference to the accompanying drawings. 1 and 2 show an example of an apparatus used in the method for controlling the rubber bank amount of the present invention. 1 is a roll kneading device, 2 is a rubber supply device for supplying the rubber R to the roll kneading device 1, and 3 is a belt conveyor that conveys a rubber strip continuously cut from the roll kneading device 1.

The roll kneading device 1 includes a pair of left and right rolls (warming rolls) 10a and 10b, and is driven to rotate by a motor 11 as shown by arrows, and is supplied from the rubber supply device 2 to between the rolls 10a and 10b. Rubber R
Is kneaded while being wound in a sheet shape around one roll 10a.

On one roll 10a, a cutter 12 for cutting out the kneaded rubber sheet R1 into a rubber strip R2 and an edge detecting means 13 for detecting a cut-out edge E of the kneaded rubber sheet R1 are provided opposite to each other. Have been.

The edge detecting means 13 is composed of a non-contact type camera or the like which is arranged at a distance from the rubber sheet R1, and as shown in FIG. 2, is arranged in parallel along one roll 10a. The first ball screw 1 is attached so as to be screwed into the first ball screw 14 and is operated by the motor 19.
4 can be moved left and right.

The cutter 12 has its proximal end screwed to a second ball screw 15 disposed in parallel with the first ball screw 14. A guide rod 16 provided in parallel with the second ball screw 15 is inserted through the intermediate portion, and guides the cutter 12 to move left and right. One end of the second ball screw 15 to which the cutter 12 is attached is supported by the edge detecting means 13, and the other end is attached to a moving member 17 screwed to the first ball screw 14. Is movable left and right between the edge detecting means 13 and the moving member 17 along the roll 10a. Further, in conjunction with the movement of the edge detection means 13 by the operation of the motor 19, the movement is possible while maintaining a certain distance from the edge detection means 13.

The edge detecting means 13 and the motors 11, 1
8, 19 and the rubber supply device 2
Connected to 0. The control means 20 controls the rotation of the motor 11 at a constant speed in accordance with the kneading speed, while receiving the edge detection signal of the edge detection means 13 and causing a deviation between the edge position of the rubber sheet R1 and a preset reference position. The amount is obtained by calculation, the amount of rubber supplied from the rubber supply device 2 between the rolls 10a and 10b is adjusted based on the calculated amount of deviation, and the bank amount of rubber R between the rolls 10a and 10b is controlled. ing.

Further, in order to keep the width of the rubber strip R2 cut by the cutter 12 constant, the motor 19 is operated based on the calculated shift amount, and the designated position of the edge detecting means 13 is set to the cut edge of the rubber sheet R1. E is controlled so as to always face E. Motor 18
When a plurality of roll kneading devices described later are installed to form a roll kneading device group, the device operates when adjusting the cutout width of the rubber strip R2 to be cut out based on the shift amount in one roll kneading device downstream. It is supposed to.

According to the above-described roll kneading device, the rubber R supplied between the rolls 10a and 10b from the rubber supply device 2 is kneaded while being wound around one of the rolls 10a, and is formed into a rubber sheet R1. From the one end side by the cutter 12 continuously. At this time, the edge detecting means 13 detects the cut-out side edge E of the rubber sheet R1 and sends a signal of the edge position to the control means 2.
Send to 0.

The control means 20 calculates the amount of deviation between the edge position and a preset edge reference position based on the edge position signal. If there is no shift amount, the state is maintained because the bank amount is an appropriate value. If there is a shift amount, the information signal is output to the rubber supply device 2, and the rubber supply amount from the supply device 2 is adjusted so that the shift amount is set to 0, and the rubber signal is supplied between the rolls 10a and 10b. While the motor 19 is operated so that the designated position of the edge detecting means 13 matches the edge E of the rubber sheet R1.
To move. When the shift amount is positive (the bank amount is large), the cutter 12 moves to the left side in FIG. When the shift amount is minus (the bank amount is small), the cutter 12 moves to the right in FIG. 2 with the movement of the edge detecting means 13 and the cutout width of the rubber strip R2 is kept constant, thereby cutting out. Constant the amount of rubber to be used.

The cut-out side edge E of the rubber sheet R1 kneaded while being wound on one of the rolls 10a is detected by the edge detecting means 13, and the signal is received by the control means 20 to be kneaded with the edge position in advance. The amount of deviation of the rubber from the reference position set according to the appropriate amount of bank of rubber to be obtained is determined, the amount of rubber supplied between the rolls 10a and 10b is adjusted based on the amount of deviation, and the amount of rubber is controlled. Even if the rubber mass on the bank between the supplied rolls 10a and 10b has an irregular shape and a complicated shape, it is possible to measure the quality of the bank amount regardless of the shape, so that the bank amount can be accurately controlled. can do. Therefore, the fluctuation of the bank amount can be suppressed, and the stable kneading can be performed.

FIG. 3 shows another example of the bank amount control method of the present invention, in which a plurality of the above-described roll kneading apparatuses are installed, and the rubber is sequentially transferred from the upstream roll kneading apparatus 1A to the downstream roll kneading apparatus 1C. In a roll kneading apparatus group in which kneading is cut out and supplied. The control means 20 of the most downstream roll kneading apparatus 1C is connected to the control means 20 of the upstream roll kneading apparatus 1B.
The control means 20 of B is connected to the control means 20 of the most upstream roll kneading apparatus 1A, and feeds back the information signal of the deviation amount to the immediately preceding upstream roll kneading apparatus.

In such a roll kneading device group, the rubber R supplied from the rubber supply device 2 is supplied to each roll 1 in the order of the roll kneading devices 1A, 1B and 1C in the same manner as described above.
It is kneaded sequentially between 0a and 10b. At this time, in each of the roll kneading apparatuses 1A, 1B and 1C, one roll 10a
The cut-out side edges of the rubber sheet R <b> 1 wound around are detected by the edge detecting means 13.

A signal of each detected edge position is sent to each control means 20, and each roll kneading device 1A, 1B, 1C
Are respectively calculated from the reference position. Each of the roll kneading apparatuses 1A, 1B, 1C
In the same manner as above, the motor 19 is operated,
The edge detecting means 13 is moved so that the designated position of the edge detecting means 13 becomes a position corresponding to the edge E of the rubber sheet R1.

On the other hand, based on the amount of displacement of the most downstream roll kneading apparatus 1C, a signal of deviation information is fed back from the control means 20 to the control means 20 of the immediately preceding upstream roll kneading apparatus 1B, and the roll kneading apparatus is fed back. In 1B, the motor 18 is actuated via the control means based on the information, and the cut width of the rubber strip R2 cut out there is adjusted so that the deviation amount becomes zero, and is supplied to the most downstream roll kneading apparatus 1C. By changing the amount of rubber, the amount of bank between the rolls 10a and 10b of the roll kneading device 1C is controlled.

When the shift amount is positive (the bank amount is large), the cutter moves to the left side in FIG. 2, and the cutout width is reduced to reduce the supply amount. When the shift amount is minus (the bank amount is small), the cutter moves to the right side in FIG. 2 to increase the cutting width and increase the supply amount.

Further, based on the amount of displacement of the roll kneading apparatus 1B, the width of the rubber strip R2 cut out from the immediately preceding roll kneading apparatus 1A is adjusted in the same manner as described above, and supplied to the roll kneading apparatus 1B. The rubber amount is controlled, and the bank amount is feedback-controlled. In the roll kneading apparatus 1A on the most upstream side, as described above, the rubber supply device 2 is feedback-controlled through the control means 20 of the roll kneading apparatus 1A, and the amount of rubber supplied between the rolls 10a and 10b is adjusted. The amount is controlled.

Thus, the roll kneading apparatuses 1A, 1B, 1
When a plurality of Cs are provided and the rubber is sequentially kneaded and cut and supplied, the cut side edges of the kneaded rubber sheet are detected while being wound around one roll of a roll kneading apparatus, and the deviation between the edge position and the reference position is detected. The rolls 10a, 10C in each of the downstream roll kneading apparatuses 1B, 1C are adjusted by adjusting the cut width of the rubber strip cut from each of the upstream roll kneading apparatuses 1A, 1B according to the amount.
Since the amount of rubber bank between b is controlled, the amount of rubber bank between rolls can be controlled with high accuracy between the roll kneading apparatuses, so that stable and uniform kneading can be performed.

The present invention is not limited to the above-mentioned warming roll, but can be suitably used for any one in which rubber is kneaded while being wound around one roll and cut out. Needless to say, the configuration of the apparatus is not limited to the above embodiment.

For example, when the edge detecting means 13 is fixed,
By moving only the cutter 12 to the left and right and moving the cutter 12 by one motor 18, the width of the rubber strip to be cut is kept constant, and the width of the rubber strip cut by the above-mentioned displacement is adjusted. Alternatively, as in the embodiment of FIG. 3, when a plurality of roll kneading apparatuses are connected in series, the roll kneading apparatuses 1A,
It is preferable to perform feedback control by connecting the respective control means 20 of the roll kneading apparatuses 1A, 1B, and 1C.
The control may be performed by a single control unit.

[0030]

As described above, the present invention detects the cut-out side edge of a kneaded rubber sheet while winding it around one roll of a roll kneading apparatus for kneading rubber, and detects the deviation between the edge position and the reference position. By controlling the amount of rubber between the rolls, even if the mass of rubber supplied between the rolls is irregular and has a complicated shape, the amount of rubber is accurately controlled to keep the amount of rubber constant. be able to.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing an example of a roll kneading apparatus used in a bank amount control method of the present invention.

FIG. 2 is a side view of a main part of the roll kneading apparatus of FIG.

FIG. 3 is an explanatory diagram showing an example of a roll kneading apparatus group used in another bank amount control method of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Roll kneading device 2 Rubber supply device 3 Belt conveyor 10a, 10b Roll 11, 18, 19 Motor 12 Cutter 13 Edge detection means 14 First ball screw 15 Second ball screw 16 Guide rod 17 Moving member 20, 20x Control means E Cutting edge R rubber R1 rubber sheet R2 rubber strip

Claims (5)

[Claims] 1. A cut-off side edge of a kneaded rubber sheet is detected while being wound around one roll of a roll kneading apparatus for kneading rubber, and the roll position is determined based on a deviation amount between the edge position and a preset reference position. A bank amount control method for adjusting an amount of rubber supplied between rolls of a kneading apparatus and controlling a bank amount between the rolls. 2. A plurality of roll kneading apparatuses for kneading rubber are provided, and when kneading and cutting out and supplying rubber sequentially from an upstream side to a downstream roll kneading apparatus, kneading is performed while being wound around one roll of the roll kneading apparatus. Each of the cut-out edges of the rubber sheet is detected, and the amount of deviation between the edge position and a preset reference position is adjusted by adjusting the cut-out width of the rubber strip cut out from the roll kneading apparatus on one upstream side. And a bank amount control method for controlling a bank amount of rubber between rolls in a downstream roll kneading apparatus. 3. A roll kneading device for kneading rubber while winding a rubber sheet around one of a pair of left and right rolls,
The one roll is provided with a cutter for cutting out the kneaded rubber sheet into a rubber strip, and an edge detecting means for detecting a cut-out edge of the kneaded rubber sheet, respectively, and receiving a signal from the edge detecting means. A roll kneading apparatus provided with a control means for adjusting an amount of rubber supplied between the pair of rolls based on a shift amount between the edge position and a preset reference position, and controlling a bank amount of rubber between the rolls. 4. A plurality of roll kneading devices for kneading while kneading rubber in a sheet shape around one of a pair of left and right rolls are provided, and the rubber is kneaded and cut out and supplied sequentially from an upstream side to a downstream side kneading device. In the set of roll kneading devices, facing one roll of each roll kneading device,
A cutter for cutting the kneaded rubber sheet into a rubber strip is movably disposed along the roll, and one of the rolls is provided with edge detecting means for detecting a cut-side edge of the kneaded rubber sheet. And
In response to the signal from each edge detecting means, the cutter width of the roll kneading apparatus on one upstream side is moved by the shift amount between the edge position and a preset reference position to adjust the cutting width of the rubber strip to be cut out, and the downstream side is adjusted. Roll kneading apparatus group provided with control means for controlling the amount of rubber bank between the rolls of the side roll kneading apparatus. 5. The control means, wherein the edge detecting means is provided so as to be movable along the one roll, and the cutter is movable while maintaining a constant distance in conjunction with the edge detecting means. 5. The roll kneading according to claim 3, wherein the edge detecting means is controlled so as to be always at a position facing the cut-side edge of the rubber sheet, so that the width of the rubber strip cut by the cutter can be kept constant. apparatus.