KR100952315B1 - Device for preventing mixing extrusion rubber for tire and method thereof - Google Patents

Abstract

The present invention relates to an apparatus for preventing a mixture of extruded rubber of a tire, comprising: an extruder for pressurizing a rubber compound introduced through a hopper with an internal screw to extrude in a rubber sheet form according to a specification of a semi-finished product to be extruded; A first detection sensor installed in a hopper of the extruder and detecting input information of the first semifinished rubber compound; A second detection sensor installed in a hopper of the extruder and detecting input information of a second semi-finished rubber compound that is replaced and added; A third detection sensor configured to detect discharge information of the first semifinished rubber sheet and the second semifinished product sheet which is installed and extruded at the outlet side of the air outlet; And a first sensing sensor for controlling the cycle speed of the first semifinished product and the second semifinished product passing through the extruder according to the rotational speed of the screw of the extruder set according to the specifications of the first semifinished product and the second semifinished product. Measured and data-processed using a second sensor and a third sensor, and when the specification of the extruded semifinished product is changed, the cycle time of the first semi-finished product that is data and the second semifinished product that is replaced and continuously extruded are applied by applying the cycle time. It is configured to include a controller for controlling, to measure and data each cycle time according to the specifications of the semi-finished product, and to change the cycle time of the first semi-finished product is replaced with the cycle time of the first semi-finished product when the specification of the semi-finished product is extruded By controlling extrusion by applying, the amount of rubber consumed unnecessarily by minimizing the mixing of extruded rubber when changing the standard of semi-finished product It has the effect of allowing reduced.

Extrusion Process, Extruder, Screw, Rotational Speed, Semi-Finished Product, Rubber Compound, Rubber Sheet

Description

Anti-extruded rubber mixing device of tire and its method {DEVICE FOR PREVENTING MIXING EXTRUSION RUBBER FOR TIRE AND METHOD THEREOF}

The present invention relates to an apparatus for preventing the mixing of extruded rubber of a tire and a method thereof, and more particularly, to minimize the amount of rubber that is differently discarded by mixing different types of rubber during the standard replacement process of the semi-finished product extruded in the extrusion process of semi-finished products. The present invention relates to an extruded rubber mixing prevention device for tires and a method thereof.

As is well known, finished tires are a refining process that uses a mixture of raw materials, ie natural rubber, synthetic rubber and chemicals, to produce compounds with specific physical properties, extrusion / rolling / cutting processes to produce these compounds into semi-finished products in the form of sheets, It is manufactured through a molding process of forming semi-finished products to make a green tire, and a vulcanization process of vulcanizing the green tire to produce a finished product tie.

In the extrusion process of the semi-finished product, the compound injected into the extruder is pressed to extrude in the form of a rubber sheet according to the standard of the semi-finished product.

In the extrusion process of such semi-finished products, the extrusion process is frequently performed while frequently changing the type of rubber extruded in the extruder according to the specification of the semi-finished product to be extruded.

In the process of changing the size of the semifinished product, the operator cannot visually detect the flow of rubber inside the compressor, and the size of the semifinished product is changed based on the color of the rubber sheet extruded through the extruder outlet and the ring pattern formed inside the rubber sheet. I confirm that there is.

However, since the different types of rubbers used in accordance with the specifications of the semi-finished products to be extruded are continuously extruded without distinguishing from each other in the process of changing the size of the semi-finished product, the rubbers are mixed with each other in the extruder to increase the amount of unnecessary rubber consumption. Has the problem.

In order to solve the above problems, conventionally, when exchanging the specifications of semi-finished products in the extrusion process, rubbers extruded using scotched rubber or iron beads can be detected.

However, there is another problem in that the screw of the compressor is broken by the rubber or metal beads that are scorched during the extrusion of the semifinished product.

An object of the present invention for solving the above problems is, by collecting the cycle time information according to the type of rubber that is extruded during the replacement of the specifications of the semi-finished product in the extrusion process of the semi-finished product, by controlling the operation using the collected cycle time information, extruded rubber It is to provide an apparatus and method for preventing mixing of extruded rubber of a tire, so that the amount of rubber mixed with each other can be minimized.

Extruder rubber mixing prevention device of the present invention for achieving the above object is an extruder for pressing the rubber compound introduced through the hopper according to the specifications of the semi-finished product with an internal screw to extrude in the form of a rubber sheet; A first detection sensor installed in a hopper of the extruder and detecting input information of the first semifinished rubber compound; A second detection sensor installed in a hopper of the extruder and detecting input information of a second semi-finished rubber compound that is replaced and added; A third detection sensor configured to detect discharge information of the first semifinished rubber sheet and the second semifinished product sheet which is installed and extruded at the outlet side of the air outlet; And a first sensing sensor for controlling the cycle speed of the first semifinished product and the second semifinished product passing through the extruder according to the rotational speed of the screw of the extruder set according to the specifications of the first semifinished product and the second semifinished product. Measured and data-processed using a second sensor and a third sensor, and when the specification of the extruded semifinished product is changed, the cycle time of the first semi-finished product that is data and the second semifinished product that is replaced and continuously extruded are applied by applying the cycle time. It includes a controller for controlling.

  The controller includes a main panel for setting and controlling the screw rotation speed differently according to the specifications of the first semifinished product and the second semifinished product; A timer in which the measured cycle time of the first semifinished product and the cycle time value of the second semifinished product are set; And when changing the semi-finished product specification, the PSI (externally controlled PLC by applying the cycle time of the second semi-finished product continuously extruded by replacing the cycle time of the first semi-finished product set in the timer according to each rotational speed controlled by the main panel) ) May be included.

 The controller preferably controls extrusion to have an interval between the final cycle time period of the first semifinished product and the initial cycle time period of the second semifinished product that is replaced and continuously extruded.

 The interval period is preferably controlled to be shorter than the cycle time period of the first semifinished product.

In addition, the method of preventing the mixing of the extruded rubber of the tire of the present invention sets the type of each rubber compound, the compound input amount, and the screw rotation speed of the compressor according to the specifications of the respective semi-finished products for extruding by using the extruded rubber mixing prevention device of one tire. Making; Measuring each cycle time at which each semifinished rubber compound passes through the compressor and is extruded into a rubber sheet of each semifinished product at each rotational speed; Storing the cycle time of each semifinished product and making data; And a mixed prevention step of controlling extrusion using the cycle time of the second semifinished product which is continuously extruded by replacing the cycle time of the first semifinished product that is replaced with the specification of the extruded semifinished product.

 In the extruded rubber blend prevention step, it is desirable to control extrusion to have an interval between the final cycle time period of the first semifinished product and the first cycle time period of the second semifinished product which is replaced and continuously extruded.

The interval period is preferably controlled to be shorter than the cycle time period of the first semifinished product.

According to the above-described anti-rubber mixing apparatus and method of the tire of the present invention, each cycle time is measured and dataized according to the specifications of the semi-finished product, and replaced with the cycle time of the first semi-finished product when the specification of the extruded semi-finished product is replaced. By controlling the extrusion by applying the cycle time of the second semi-finished product to be extruded, it is possible to minimize the mixing of the extruded rubber when changing the specifications of the semi-finished product to reduce the amount of unnecessary rubber consumption.

In addition, the apparatus for preventing the mixing of extruded rubber of the tire of the present invention and the method thereof, an interval between the final cycle time period of the first semi-finished product and the initial cycle time period of the second semi-finished product continuously extruded when the specification of the semi-finished product to be extruded is replaced. By controlling the extrusion to have the effect, it is possible to more effectively prevent the mixing of the extruded rubber.

In addition, the apparatus for preventing the mixing of extruded rubber of the tire of the present invention and the method thereof are controlled so that the interval period is shorter than the cycle time period of the first semi-finished product, so that the extrusion process according to the specification change of the semi-finished product can be made more continuously. Has an effect.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.

1 is a schematic diagram showing a compression rubber mixing prevention device of a tire according to an embodiment of the present invention.

Referring to FIG. 1, the tire compression rubber mixing prevention device of the present embodiment includes an extruder 10, a first detection sensor 20, a second detection sensor 30, a third detection sensor 40, and a controller ( 50).

The extruder 10 is configured to pressurize and transfer the rubber compound 5 introduced therein through the hopper 11 toward the discharge port 13 with the screw 12 to extrude in the form of a rubber sheet 6.

The semi-finished product is an extrusion process of extruding different rubber compounds obtained through a refining process according to a semi-finished product into a rubber sheet using the extruder 10, and a rolling process of rolling the rubber sheet extruded from the extruder through a rolling roller 15. And is completed through the altar process is transported to the cutting machine (not shown) through the transport conveyor 16 and cut.

As such, in the extrusion process, when the specification of the semifinished product to be extruded is replaced, the second semifinished product which is continuously extruded by being replaced with the first semifinished product uses different kinds of rubber compounds.

Here, the first semifinished rubber compound means a rubber compound for producing the first semifinished product, and the first semifinished rubber sheet means a rubber sheet extruded by pressing the first semifinished rubber compound.

The second semifinished rubber compound refers to a rubber compound for manufacturing the second semifinished product, and the second semifinished rubber sheet refers to a rubber sheet extruded by pressing the second semifinished rubber compound.

In addition, in order to extrude different types of rubber compounds into the rubber sheet according to the semi-finished product specifications, the rotational speed (RPM) of the screw 12 of the extruder 10 is required according to the type of the rubber compound. The rotation speed of the screw 12 of the extruder 10 is controlled by a controller through a drive motor 20 for driving it.

The first detection sensor 30 and the second detection sensor 40 are respectively installed in the hopper 12 of the extruder 10. The first detection sensor 30 detects whether the first semi-finished rubber compound is inserted, and the second monitoring sensor 40 is replaced when the standard semi-finished product is replaced in the extrusion process, and whether the second semi-finished rubber compound is continuously extruded. Detect.

The third detection sensor 50 detects whether the first semifinished rubber sheet or the second semifinished rubber sheet, which is installed and discharged at the outlet 13 side of the extruder 10, is extruded.

In the present exemplary embodiment, the first sensing sensor 30, the second sensing sensor 40, and the third sensing sensor 50 are all made of a photo sensor.

The controller 60 includes a main panel 61, a timer 62, and a programmable logic control 63.

The main panel 61 is driven to initially set the screw 12 rotational speed value of the appropriate compressor 10 or to drive the screw 12 at the set rotational speed value according to the first semifinished product specification and the second semifinished product specification. Control via the motor 20.

The timer 62 stores cycle time values that are extruded through the extruder 10 in accordance with the rotational speed of the screw 12 set and controlled by the main panel 61 in accordance with the specifications of the semifinished products. Meanwhile, the timer 62 may be integrally formed with the main panel 61.

In addition, when the semi-finished product is replaced with the semi-finished product 63, the cycle time of the first semi-finished product set in the timer 62 is replaced with the rotation speed value of each screw 12 controlled by the main panel 61. And control the extrusion to minimize mixing of the first semifinished rubber and the second semifinished rubber by using the cycle time of the second semifinished product which is continuously extruded.

2 is a flowchart illustrating a process of preventing mixing of extruded rubber of a tire according to one embodiment of the present invention.

Referring to Figure 2, by using the above-mentioned tire extruded rubber mixing prevention device 1 of the present embodiment, the tire extruded rubber mixing prevention process is a setting step (ST1), cycle time measuring step (ST2), data step (ST3), and the extrusion control step (ST4).

In the setting step ST1, a rubber compound type, a compound dosage, and a screw 12 rotation speed value required for extrusion are set according to the specifications of semi-finished products extruded through the extruder 10.

In particular, the rotational speed of the screw 12 of the extruder 10 is initially set through the main panel 61 according to the rubber compound type and the compound input amount of the semi-finished product to be extruded, and then controlled according to the rotational speed value of the set screw 12. do.

In the cycle time measuring step ST2, the semi-finished rubber compound passes through the extruder 10 and is extruded into the rubber sheet of each semi-finished product at the rotational speed of the screw 12 of the extruder 10 set according to the specification of the semi-finished product to be extruded. Measure the time, ie the cycle type.

The cycle time of each semifinished product is determined from the first injection time of the semifinished rubber compound sensed by the first detection sensor 30 into the hopper 11 of the extruder 10 and the exit 13 of the extruder 10 by the second monitoring sensor. From to the time when the semifinished rubber sheet begins to be discharged first.

Therefore, in the cycle time measuring step ST2, all of the semi-finished products to be extruded by exchanging the specification in the extrusion process of the semi-finished product using the extruder 10 are all preceded.

In the data step ST3, each cycle time value measured according to the specifications of the semi-finished products in the cycle time measuring step ST2 is stored in the timer 62 and dataized.

In the extrusion control step ST4, when the specification of the semifinished product to be extruded is changed, the cycle time of the second semifinished product which is continuously extruded by replacing the cycle time of the first semifinished product set in the PEL 63 is set to the timer 62. To control extrusion.

That is, the PSI 63 calculates the total extrusion time for which the first semifinished rubber stays in the extruder 10 from the set cycle time of the first semifinished product of the extruder 10, and thus the total extrusion time of the first semifinished rubber. The second extruded rubber, which is subsequently extruded, to be replaced is then controlled to prevent mixing with the first semifinished rubber. .

This embodiment illustrates the extrusion control to have an interval between the final cycle time of the first semifinished product and the first cycle time of the second semifinished product which is continuously extruded in the process of changing the specification of the semifinished product.

Here, the final cycle time of the first semi-finished product is the first semi-finished rubber compound that was last introduced through the hopper 11 of the extruder 10 is pressure-transferred by the screw 12 to the rubber through the discharge port 13 of the extruder 10 It means the time extruded into a sheet.

In addition, the first cycle time of the second semifinished product is replaced with the first semifinished product, and the second semifinished rubber compound first introduced through the hopper 11 of the extruder 10 is pressurized by the screw 12 to discharge the extruder 10. It means the time extruded into the rubber sheet through (13).

 As such, in the replacement process of the semifinished product, the initial cycle time period of the second semifinished product is partially overlapped before the last cycle time period of the first semifinished product ends.

At this time, the screw rotational speed of the extruder 10 is varied in accordance with the rotational speed value set in the timer 62 in the second semifinished product.

Thus, extrusion control is carried out to have an interval between the final cycle time period of the first semifinished product and the initial cycle time period of the second semifinished product continuously extruded, thereby avoiding mixing of the first semifinished rubber and the second semifinished rubber mixed in the extruder. To prevent it.

At this time, the interval period is more preferably controlled to be controlled shorter than the final cycle time period of the first semi-finished product. This allows the extrusion process according to the replacement of the semifinished product to be carried out continuously, and also reduces the amount of unnecessary rubber consumption by reducing the mixing distance of the first semi-finished rubber and the second semi-finished rubber mixed in the extruder 10. Do.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but many variations and modifications may be made without departing from the spirit and scope of the invention. And it goes without saying that they belong to the scope of the present invention.

1 is a schematic diagram showing an apparatus for preventing mixing of extruded rubber of a tire according to an embodiment of the present invention.

2 is a flowchart illustrating a method for preventing mixing of extruded rubber of a tire according to one embodiment of the present invention.

<Description of Main Reference Signs>

1: rubber compound prevention device 5: rubber compound

6: rubber sheet 10: extruder

11: hopper 12: screw

13: outlet 20: drive motor

30: first detection sensor 40: second detection sensor

50: third detection sensor 60: controller

61: main panel 62: timer

63: PLC

Claims (7)

Extruder extruded in the form of a rubber sheet by pressing the rubber compound introduced through the hopper according to the specifications of the semi-finished product with an internal screw; A first detection sensor installed in a hopper of the extruder and detecting input information of a first semi-finished rubber compound; A second detection sensor installed in a hopper of the extruder and detecting input information of a second semi-finished rubber compound that is replaced and replaced; A third detection sensor installed at an exit side of the extruder and detecting discharge information of the first semifinished rubber sheet and the second semifinished product sheet to be extruded; And Controlled by the rotational speed of the screw of the extruder set according to the specifications of the first semifinished product and the second semifinished product, The cycle time of the first semifinished product and the cycle time of the second semifinished product passing through the extruder according to the rotational speed is measured and dataged using the first sensor, the second sensor, and the third sensor. , When changing the specification of the extruded semifinished product, the cycle time of the data of the first semifinished product, and the second semifinished product which is replaced and continuously extruded, includes a controller which applies extrusion control by applying a cycle time, The controller comprising: A main panel which sets and controls the screw rotational speed differently according to the specifications of the first semifinished product and the second semifinished product; A timer in which the measured cycle time of the first semifinished product and the cycle time value of the second semifinished product are set; And When changing the semifinished product specification, PEL applies extrusion control by applying the cycle time of the second semifinished product which is continuously extruded by replacing the cycle time of the first semifinished product set in the timer according to each rotational speed controlled by the main panel. Tire extruded rubber mixing prevention device containing a sieve. delete In claim 1, The controller comprising: And extrusion control to have an interval between the final cycle time period of the first semifinished product and the first cycle time period of the second semifinished product that is continuously extruded and replaced. 4. The method of claim 3, The interval period is, Preventing extruded rubber admixture of tires which is controlled to be shorter than the final cycle time period of the first semifinished product. Setting each rubber compound type, compound dose, and screw rotational speed of the compressor to be used for the specifications of the respective semi-finished products to be extruded using the extruded rubber mixing prevention device of the tire of claim 1; Measuring cycle times of each semifinished rubber compound passing through the compressor and extruding into a rubber sheet of each semifinished product according to each rotational speed; Storing the data of cycle times of the semi-finished products; And When exchanging the specification of the extruded semifinished product, mixing the extruded rubber mixture by controlling the extrusion time using the cycle time of the second semifinished product which is continuously extruded in exchange with the cycle time of the first semifinished product which is data, prevents mixing of extruded rubber. Prevention method. In claim 5, In the extruded rubber mixing prevention step, And extrusion control to have an interval between the final cycle time of the first semifinished product and the initial cycle time of the second semifinished product that is continuously extruded and replaced. In claim 6, The interval period is, Preventing mixing of extruded rubber in a tire which is controlled to be shorter than the final cycle time period of the first semifinished product.

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