KR20140033662A - Apparatus for manufacturing sheet rubber for tire - Google Patents

Abstract

An apparatus for manufacturing a sheet rubber for a tire according to the present invention comprises a sealing type mixer for producing the compounded robber and an extruder for extruding compounded rubber into sheet robber and forms compounded rubber extruded from the extruder. The apparatus comprises: a milling device which includes a normal milling roll set equipped with a pair of normal milling rolls, a cooling milling roll set equipped with a pair of cooling milling rolls and a heating milling roll set equipped with a pair of heating milling rolls; a milling device transfer device which locates one among the cooling milling roll set and normal milling roll set to a discharge hole of the extruder by transferring the milling device; an extrusion room temperature sensor which is installed in an extrusion room; a cooling device which cools the cooling milling roll; a heating device which heats the heating milling roll; and a control device which controls the whole operation of the device. The control device controls the operations of the milling device, the milling device transfer device, the cooling device and the heating device so that the compounded rubber extruded from the discharge hole of the extruder according to the temperature of the compounded rubber in the extrusion room is formed into the sheet rubber by one among the normal milling roll set, cooling milling roll set, and heating milling roll set.

Description

Apparatus for manufacturing sheet rubber for tire

The present invention relates to a sheet rubber manufacturing apparatus for tires, and more particularly, sheet rubber of good quality by maintaining a uniform milling temperature when the compounding rubber extruded from the extruder is compressed into a sheet form by the milling roll of the milling apparatus. It relates to a sheet rubber manufacturing apparatus for a tire that can be produced.

Tires are usually manufactured through a refining process, a semi-finished product process, a molding process, a vulcanizing process, and are marketed after an inspection process for selecting defective products in the manufacturing process. A brief description of each manufacturing process of a tire is as follows.

The refining process is a process of mixing all the components of the tire, such as natural rubber, synthetic rubber, reinforcing agents such as carbon black, and vulcanizing agents made of chemicals including sulfur, into rubber for tire, These include extrusion, rolling, cutting, and bead processes. The molding process is a process in which semi-finished products are sequentially assembled to a molding machine drum to form a cylindrical rubber composite, and a cylindrical green case is made through the molding process. When the green case is put into a mold serving as a mold, and heat and pressure are applied, the sulfur and carbon mixed in the rubber are completely cured and finished as an elastic tire. The process of completing the semi-finished green case with a tire is a vulcanization process.

In the refining process, a sheet rubber manufacturing apparatus is used in which raw materials of a tire are mixed to form sheet rubber in a sheet form. In general, the sheet rubber manufacturing apparatus mixes rubber and various chemicals to form a rubber compounded in a sheet form through a milling roll of a milling apparatus, and applies a release liquid to prevent adhesion to the completed sheet rubber. It is configured to load sheet rubber after drying and cooling. Such a sheet rubber manufacturing apparatus is disclosed in Korean Patent No. 0961057 (registered May 25, 2010).

In the manufacturing process of the sheet rubber, the conditions such as the feed rate of the compound rubber, the milling temperature and the milling thickness are important factors for determining the properties of the sheet rubber. Among these, the feed rate and the milling thickness can be kept constant under the set conditions of the apparatus, but the temperature of the milling apparatus is susceptible to various causes such as work interruption and equipment abnormality. In addition, when the milling operation is performed in a state where the temperature of the milling device is uneven, an unsuitable sheet rubber is manufactured, which adversely affects the next process, thereby degrading the final product quality and performance.

The present invention has been made in view of this point, and an object of the present invention is to uniformly maintain a milling temperature when a compound rubber is compressed into a sheet form by milling rolls of a milling device in the manufacturing process of sheet rubber by a milling device. It is an object of the present invention to provide a sheet rubber production apparatus capable of producing sheet rubber of good quality.

The apparatus for producing tire sheet rubber according to the present invention for achieving the above object is a hermetic mixer for mixing compound rubber and chemicals and producing compound rubber through a batch unit operation, and a compound rubber introduced from the hermetic mixer. A pair of cooling rotating opposite to each other and a set of normal milling rolls having an extruder for extruding and a pair of normal milling rolls rotating opposite to each other by molding the compound rubber extruded from the discharge port of the extruder into sheet rubber A milling apparatus comprising a set of cold milling rolls having a milling roll and a set of heated milling rolls having a pair of heated milling rolls rotating opposite to each other; and the normal milling roll set and the cold milling by moving the milling apparatus. Milling apparatus moving field for placing any one of a roll set and the cold milling roll set in the discharge port of the extruder A chihuahua, an extrusion chamber temperature sensor installed in the extrusion chamber of the extruder to detect the temperature of the compound rubber in the extruder, a cooling device for cooling the cold milling roll, a heating device for heating the heating milling roll, And a control device for controlling the overall operation of the device. The control device is provided with a detection signal from the extrusion chamber temperature sensor, the compounding rubber extruded from the discharge port of the extruder according to the compounding rubber temperature in the extrusion chamber is the normal milling roll set, the cold milling roll set, and The operation of the milling device, the milling device moving device, the cooling device and the heating device is controlled so as to be molded into sheet rubber by any one of the heated milling roll sets.

An apparatus for manufacturing tire sheet rubber according to the present invention includes a normal milling roll temperature sensor installed on the normal milling roll to detect the temperature of the normal milling roll and provide the detection signal to the control device, and the cold milling roll. A cold milling roll temperature sensor installed on the cold milling roll to detect a temperature of the wafer and providing the detection signal to the controller, and to detect a temperature of the heating milling roll and to provide the detection signal to the controller. The apparatus may further include a normal milling roll temperature sensor installed at the heating milling roll.

The plurality of normal milling roll temperature sensor is installed along the circumference of the normal milling roll, the plurality of cooling milling roll temperature sensor is installed along the circumference of the cold milling roll, the heating milling roll temperature sensor is the heat milling A plurality may be installed along the circumference of the roll.

The cooling device may supply a cooling medium to the inside of the cooling milling roll to cool the surface of the cooling milling roll, and the heating device may supply a heating medium to the inside of the heating milling roll to heat the surface of the heating milling roll. have.

According to the present invention, a sheet rubber manufacturing apparatus for a tire is formed by selecting one of a normal milling roll set, a cooling milling roll set, and a heating milling roll set according to the temperature of the compounding rubber discharged from an extruder, thereby molding the compounding rubber. The milling temperature when compressed by the roll can be kept uniform, thereby producing sheet rubber of good quality.

In addition, the sheet rubber manufacturing apparatus for a tire according to the present invention measures the milling temperature in real time during the molding of the compound rubber, and when the milling temperature is out of the set temperature range, the temperature of the milling roll is adjusted using a cooling device or a heating device. By changing or by shaping by another milling roll, the sheet rubber to be molded can have uniform physical properties, and consequently, the quality of the final tire product can be improved.

1 is a configuration diagram schematically showing an apparatus for manufacturing a sheet rubber for tires according to an embodiment of the present invention.
Figure 2 is a block diagram showing a part of the configuration of the rubber sheet rubber manufacturing apparatus according to an embodiment of the present invention.
Figure 3 is a perspective view showing a part of the milling apparatus of the apparatus for manufacturing a sheet rubber for tires according to an embodiment of the present invention.
Figure 4 is for explaining the operation of the tire sheet rubber manufacturing apparatus according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the tire rubber manufacturing apparatus according to the present invention.

While the present invention has been described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. . Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

1 is a configuration diagram schematically showing an apparatus for manufacturing a sheet rubber for tires according to an embodiment of the present invention.

Tire sheet rubber manufacturing apparatus 100 according to the present invention is a hermetic mixer 110 for producing a compounding rubber, an extruder 120 for extruding the compounding rubber produced in the hermetic mixer 110, and in the extruder 120 Milling device 130 for molding the extruded compound rubber into the sheet rubber 10, milling device moving device 180, 185 for moving the milling device 130, and a control device for controlling the overall operation of the device ( 190). The extruder 120 and the milling device 130 are equipped with temperature sensors 125, 143, 153 and 163, and the control device 190 from the temperature sensors 125, 143, 153 and 163. The detection signal is provided to control the operations of the hermetic mixer 110, the extruder 120, the milling device 130, and the milling device moving device 180, 185. The sheet rubber manufacturing apparatus 100 for a tire according to the present invention uses the temperature sensors 125, 143, 153 and 163 of the temperature of the compounding rubber in the extruder 120 and the temperature of the milling device 130. By detecting and maintaining the milling temperature uniformly when the compounding rubber extruded from the extruder 120 is pressed into the sheet form by the milling apparatus 130 through this temperature information, a good quality sheet rubber 10 can be produced. Can be.

The hermetic mixer 110 is for producing a compound rubber by mixing various types of rubber and chemicals and performing a batch unit operation, and a storage hopper 111 and a piston 112 for feeding raw materials into the storage hopper 111. And, it comprises a rotary blade 113 positioned below the storage hopper 111 and the outlet 114 located below the rotary blade 113. The extruder 120 is for extruding the compounding rubber introduced from the hermetic mixer 110 toward the milling apparatus 130, and is coupled to the lower portion of the hermetic mixer 110 to be connected to the outlet 114 of the hermetic mixer 110. , An extrusion chamber 121 connected to the outlet 114 of the hermetic mixer 110, a screw 122 installed in the extrusion chamber 121 to transfer the compounding rubber toward the milling apparatus 130, and the compounding rubber milled. An outlet 123 that is extruded toward the device 130. An extrusion chamber temperature sensor 125 for detecting the compounding rubber temperature in the extrusion chamber 121 is installed in the extrusion chamber 121.

The milling device 130 includes a housing 131, a normal milling roll set 140, a cold milling roll set 150, and a heated milling roll set 160 arranged in a row in the housing 131 in turn, and each milling. And a plurality of milling roll drivers 142, 152 and 162 to drive the roll sets 140, 150 and 160. The milling device 130 is installed to be movable under the extruder 120.

The housing 131 is partitioned into a plurality of compartments 133a, 133b, and 133c by a plurality of partitions 132, and a normal milling roll set 140 and cooling are provided in each compartment 133a, 133b, and 133c. The milling roll set 150 and the heating milling roll set 160 are disposed one by one. In addition, a plurality of inlets 134a, 134b, and 134c connected to the plurality of compartments 133a, 133b, and 133c, respectively, and connected to the outlet 123 of the extruder 120, are provided on the upper portion of the housing 131. The lower portion of the housing 131 is provided with a plurality of discharge ports 135a, 135b, 135c connected to the plurality of compartments 133a, 133b, and 133c, respectively.

The normal milling roll set 140 includes a pair of normal milling rolls 141 rotating opposite to each other, and the pair of normal milling rolls 141 are rotated in opposite directions by the normal milling roll driver 142. do. Each normal milling roll 141 is provided with a plurality of normal milling roll temperature sensors 143 along its outer circumferential surface. The normal milling roll temperature sensor 143 detects the surface temperature of the normal milling roll 141 and provides the detection signal to the controller 190.

The cold milling roll set 150 includes a pair of cold milling rolls 151 rotating opposite to each other, and the pair of cold milling rolls 151 are rotated in opposite directions by the cold milling roll driver 152. do. Each cooling mill roll 151 is provided with a plurality of cooling mill roll temperature sensors 153 along its outer circumferential surface. The cold milling roll temperature sensor 153 detects the surface temperature of the cold milling roll 151 and provides the detection signal to the controller 190.

The heat mill roll set 160 includes a pair of heat mill rolls 161 rotating opposite to each other, and the pair of heat mill rolls 161 are rotated in opposite directions by the heat mill roll driver 162. do. Each heating mill roll 161 is provided with a plurality of heating mill roll temperature sensors 163 along its outer circumferential surface. The heated milling roll temperature sensor 163 detects the surface temperature of the heated milling roll 161 and provides the detection signal to the controller 190.

The cooling mill roll 151 is cooled by the cooling device 170. The cooling device 170 cools the cooling mill roll 151 by supplying a cooling medium to the cooling mill roll 151 through the cooling medium pipe 171. As the cooling medium, a low temperature fluid such as cooling water or cooling oil may be used.

The operation of the cooling device 170 is controlled by the controller 190. The controller 190 receives the temperature information of the cooling milling roll 151 from the plurality of cooling milling roll temperature sensors 153, and when the temperature of the cooling milling roll 151 is higher than a set temperature range, the cooling apparatus 170 is operated. Operate to cool the cooling mill roll 151 to a set temperature range. When the temperature of the cooling milling roll 151 reaches the set temperature range, the controller 190 stops the cooling apparatus 170 so that the temperature of the cooling milling roll 151 can be maintained at the set temperature range.

The heating mill roll 161 is heated by the heating device 175. The heating device 175 heats the heating mill roll 161 by supplying a heating medium to the heating mill roll 161 through the heating medium pipe 176. As the heating medium, hot fluid such as hot water, steam, or heating oil may be used. The operation of the heating device 175 is controlled by the controller 190. When the controller 190 receives the temperature information of the heating milling roll 161 from the plurality of heating milling roll temperature sensors 163 and the temperature of the heating milling roll 161 is lower than the set temperature range, the heating device 175 Operation to heat the heating milling roll 161 to a set temperature range. When the temperature of the heating milling roll 161 reaches the set temperature range, the controller 190 stops the heating apparatus 175 so that the temperature of the heating milling roll 161 can be maintained in the set temperature range.

The milling device 130 may be moved by the first milling device moving device 180 and the second milling device moving device 185. The operating rod 181 of the first milling unit shifter 180 is coupled to one end of the housing 131, and the operating rod 186 of the second milling unit shifter 185 is coupled to the other end of the housing 131. do. The first milling device moving device 180 and the second milling device moving device 185 move the milling device 130 by pushing or pulling the housing 131. By the action of the first milling device moving device 180 and the second milling device moving device 185, the normal milling roll set 140, the cold milling roll set 150, the heating milling roll set of the milling device 130 One of the 160 is located below the discharge port 123 of the extruder 120.

The operation of the first milling device moving device 180 and the second milling device moving device 185 is controlled by the controller 190. The control device 190 is a compounding extruded from the extrusion chamber 121 of the normal milling roll set 140, the cold milling roll set 150, the heat milling roll set 160 in accordance with the compounding rubber temperature in the extrusion chamber 121 Choose to mold the rubber into a sheet form, and operate the first mill device shifter 180 and the second mill device shifter 185 to move the set of mill rolls below the outlet 123 of the extruder 120. Let's do it.

For example, if the compounding rubber temperature in the extrusion chamber 121 is in the normal range, the controller 190 moves the normal milling roll set 140 of the milling apparatus 130 to the discharge port of the extruder 120 as shown in FIG. 1. 123 is moved to the bottom, and the compounding rubber discharged from the extruder 120 is molded into a normal milling roll set 140. The normal milling roll temperature sensor 143 installed on the normal milling roll 141 while milling by the normal milling roll set 140 detects the milling temperature when the compounding rubber is compressed by the normal milling roll 141. And provide the detection signal to the control device 190. The controller 190 allows the milling operation to continue if the milling temperature is within the set temperature range, and stops the milling operation if the milling temperature is outside the set temperature range.

If the milling temperature is lower than the set temperature range, the control unit 190 stops the milling operation by the normal milling roll set 140, the first milling device moving device 180 and the second milling device moving device 185 By moving the heated milling roll set 160 under the outlet 123 of the extruder 120, the milling operation is performed by the heated milling roll set 160 having a higher temperature than the normal milling roll set 140. To lose. Conversely, if the milling temperature is higher than the set temperature range, the controller 190 stops the milling operation by the normal milling roll set 140, and the first milling unit shifter 180 and the second milling unit shifter 185 By operating the cold milling roll set 150 below the outlet 123 of the extruder 120, the milling operation is performed by the cold milling roll set 150 having a lower temperature than the normal milling roll set 140. To lose.

On the other hand, when the compounding rubber temperature in the extrusion chamber 121 is lower than the normal range, the control device 190 operates the first milling device moving device 180 and the second milling device moving device 185, as shown in FIG. As shown, the heated milling roll set 160 of the milling apparatus 130 is moved to the lower portion of the discharge port 123 of the extruder 120, and the compound rubber discharged from the extruder 120 is transferred to the heated milling roll set 160. Mold. The heating milling roll temperature sensor 163 installed on the heating milling roll 161 while milling is performed by the heating milling roll set 160 detects the milling temperature when the compounding rubber is compressed by the heating milling roll 161. And provide the detection signal to the control device 190. The controller 190 allows the milling operation to continue when the milling temperature is within the set temperature range, stops the milling operation when the milling temperature is outside the set temperature range, and considers the compounding rubber temperature in the extrusion chamber 121 and the like. The normal milling roll set 140 or the cold milling roll set 150 is moved below the discharge port 123 of the extrusion chamber 121.

The controller 190 also provides the milling temperature from the hot mill roll temperature sensor 163 or the cold mill roll temperature sensor 153 during shaping by the hot mill roll set 160 or the cold mill roll set 150. The temperature of the heated milling roll 161 or the cold milling roll 151 during operation can be adjusted by operating the heating device 175 or the cooling device 170. For example, when the milling temperature is lowered while the molding is performed by the heat milling roll set 160, the controller 190 supplies more heat medium to the heat milling roll 161 to further heat the heat milling roll 161. By doing this, the milling temperature can be increased to the set temperature range. In addition, when the milling temperature is increased while the molding is performed by the cooling milling roll set 150, the controller 190 supplies more cooling medium to the cooling milling roll 151 to further cool the cooling milling roll 151. The milling temperature can be reduced down to the set temperature range.

Thus, the sheet rubber manufacturing apparatus 100 for a tire according to the present invention is a normal milling roll set 140, a cooling milling roll set 150, a heating milling roll set according to the temperature of the compounding rubber discharged from the extruder 120 By selecting any one of the 160s and molding the compound rubber through this, the milling temperature can be kept uniform, and sheet rubber of good quality can be produced.

In addition, the apparatus for manufacturing tire sheet rubber 100 according to the present invention measures the milling temperature in real time during the molding of the compounded rubber, and if the milling temperature is outside the set temperature range, the cooling device 170 or the heating device 175 By using) to change the temperature of the milling roll or to be molded by another milling roll, the sheet rubber to be molded has a uniform physical properties, and as a result can improve the quality of the final tire product.

In the present invention, the specific configuration of the tire sheet rubber manufacturing apparatus 100 is not limited to the illustrated and can be variously changed, hermetic mixer 110, extruder 120, milling device 130 constituting the same. The structure of the individual components, such as the cooling device 170, the heating device 175, the milling device moving device 180, 185 or the connection structure with other components can be variously changed.

In addition, the sheet rubber manufacturing apparatus 100 for a tire according to the present invention is a release liquid applicator for applying a release liquid for preventing adhesion to the molded sheet rubber 10, like a conventional tire device, and a release liquid coated sheet It may further include a dry-cooler for drying and cooling the rubber 10 and a stacker on which the sheet rubber 10 passed through the dry-cooler is loaded.

100: sheet rubber manufacturing apparatus 110: hermetic mixer
120: extruder 121: extrusion chamber
123: discharge port 125: extrusion chamber temperature sensor
130: milling device 131: housing
140: normal milling roll set 141: normal milling roll
142: normal milling roll drive 143: normal milling roll temperature sensor
150: cold milling roll set 151: cold milling roll
152: cooling mill roll driver 153: cooling mill roll temperature sensor
160: heat milling roll set 161: heat milling roll
162: heated milling roll actuator 163: heated milling roll temperature sensor
170: cooling device 175: heating device
180, 185: first and second milling device moving device
190: control device

Claims (4)

Hermetic mixer which mixes several kinds of rubber and chemicals and produces compound rubber through the operation of a batch unit;
An extruder for extruding the compounding rubber introduced from the hermetic mixer;
Forming the compound rubber extruded from the discharge port of the extruder into a sheet rubber, comprising a normal milling roll set having a pair of normal milling rolls to face each other, and a pair of cold milling rolls to rotate to face each other A milling apparatus including a cooling milling roll set and a heating milling roll set having a pair of heating milling rolls rotating to face each other;
A milling device moving device for moving the milling device to position one of the set of normal milling rolls, the set of cold milling rolls, and the set of cold milling rolls at an outlet of the extruder;
An extrusion chamber temperature sensor installed in an extrusion chamber of the extruder to detect a compound rubber temperature in the extruder;
A cooling device for cooling the cooling mill roll;
A heating device for heating the heating mill roll; And
The compound rubber, which is provided with a detection signal from the extrusion chamber temperature sensor and is extruded from the discharge port of the extruder according to the compound rubber temperature in the extrusion chamber, includes the normal milling roll set, the cold milling roll set, and the heated milling roll set. A seat rubber for a tire, comprising: a control device for controlling the operation of the milling device, the milling device moving device, the cooling device, and the heating device so as to be molded into sheet rubber by any one of the above. Manufacturing equipment.
The method of claim 1,
A normal milling roll temperature sensor installed on the normal milling roll to detect the temperature of the normal milling roll and provide the detection signal to the control device;
A cooling mill roll temperature sensor installed on the cooling mill roll to detect a temperature of the cooling mill roll and provide the detection signal to the control device; And
And a normal milling roll temperature sensor installed on the heating milling roll to detect the temperature of the heating milling roll and provide the detection signal to the control device.
3. The method of claim 2,
The plurality of normal milling roll temperature sensor is installed along the circumference of the normal milling roll, the plurality of cooling milling roll temperature sensor is installed along the circumference of the cold milling roll, the heating milling roll temperature sensor is the heat milling Tire sheet rubber manufacturing apparatus characterized in that a plurality is installed along the circumference of the roll.
The method of claim 1,
The cooling device supplies a cooling medium to the inside of the cooling milling roll to cool the surface of the cooling milling roll, and the heating device supplies a heating medium to the inside of the heating milling roll to heat the surface of the heating milling roll. Tire sheet rubber manufacturing apparatus characterized in that.

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