JP6486135B2 - Manufacturing apparatus and manufacturing method of top sheet for tire member - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a manufacturing apparatus and a manufacturing method for a top fabric (TOP fabric) for a tire member, and more specifically, for a tire member by topping rubber on the upper and lower surfaces of an interdigital thread fabric (dip fabric, DIP fabric). The present invention relates to a manufacturing apparatus and a manufacturing method for a top fabric for a tire member that produces a top fabric.

  In a tire manufacturing process, various tire members such as carcass plies and belt plies having rubber topped on the upper and lower surfaces of the dip are used. Conventionally, these tire members are manufactured by coating (topping) unvulcanized rubber (topping rubber) on both sides of the dip counter and then cutting it to a predetermined dimension after a topping process to make it the top counter. (For example, Patent Document 1).

JP 2011-73439 A

  However, in the production of the top fabric described above, defective rubber may occur in the top fabric after production.

  Then, this invention makes it a subject to provide the manufacturing apparatus and manufacturing method of the top reaction for tire members which can suppress compared with the past that the defect with rubber | gum generate | occur | produces in the top reaction.

  As a result of intensive studies to solve the above problems, the present inventor has found that the above problems can be solved by the invention described below, and has completed the present invention.

The invention described in claim 1
A tire member top anti-manufacturing device that manufactures a tire member top anti-material by topping rubber on the dip anti-plate,
An extruder for extruding the feed rubber at a predetermined temperature; and a rubber supply unit that has a cutter blade for cutting the extruded feed rubber into a predetermined width and supplies the cut feed rubber;
A calendar roll for producing a top web by rolling a bank rubber formed by the feed rubber supplied from the rubber supply section and topping the top and bottom surfaces of the dip web;
A rubber amount detection sensor for detecting the amount of bank rubber on the calendar roll;
A temperature detection sensor for detecting the temperature of the bank rubber on the calendar roll;
According to the amount of the bank rubber detected by the rubber amount detection sensor, the rubber amount adjusting means for adjusting the amount of the rubber to be fed by adjusting the width of the rubber to be fed from the extruder by the cutter blade;
In accordance with the temperature of the bank rubber detected by the temperature detection sensor, temperature adjusting means for adjusting the temperature of the feed rubber extruded from the extruder,
The rubber supply unit is provided in the vicinity of the calendar roll,
The apparatus for manufacturing a top member for a tire member, wherein the feeding rubber fed from the rubber feeding unit is directly fed to the calender roll.

The invention described in claim 2
A method for producing a top member for a tire member by manufacturing a top member for a tire member by topping rubber on the dip portion,
A rubber supply step of extruding the feed rubber at a predetermined temperature by an extruder of a rubber supply unit, cutting the extruded feed rubber into a predetermined width by a cutter blade of the rubber supply unit, and supplying the cut feed rubber When,
A top anti-manufacturing step of producing a top anti-roll by rolling a bank rubber formed by the feed rubber supplied from the rubber supply unit with a calendar roll and topping the upper and lower surfaces of the dip anti-
A rubber amount detection step of detecting the amount of bank rubber on the calendar roll by a rubber amount detection sensor;
A temperature detection step of detecting the temperature of the bank rubber on the calendar roll by a temperature detection sensor;
In accordance with the amount of the bank rubber detected by the rubber amount detection sensor, a rubber amount adjustment step of adjusting the amount of the feed rubber by adjusting the width dimension of the feed rubber sent from the extruder by the cutter blade;
In accordance with the temperature of the bank rubber detected by the temperature detection sensor, a temperature adjustment step of adjusting the temperature of the feed rubber extruded from the extruder,
The rubber supply unit is provided in the vicinity of the calendar roll,
The method of manufacturing a top member for a tire member, characterized in that the feed rubber delivered from the rubber supply unit is directly supplied to the calendar roll.

  ADVANTAGE OF THE INVENTION This invention can provide the manufacturing apparatus and manufacturing method of the top reaction for tire members which can suppress compared with the past that generation | occurrence | production with a rubber | gum is poor in the top reaction.

It is a side view which shows the outline of a calendar roll. It is a perspective view which shows the outline of the rubber supply part of the manufacturing apparatus of the top reaction for tire members in one embodiment of this invention. It is a figure which shows the outline | summary of supply of the rubber | gum in the conventional manufacturing apparatus of the top fabric for tire members.

1. Conventional Top Anti-Manufacturing In order to facilitate understanding of the present invention, first, conventional top anti-manufacturing will be described with reference to FIGS.

(1) Calendar roll FIG. 1 is a side view showing an outline of a calendar roll. As shown in FIG. 1, in a general calendar roll 1, two pairs of rolls 6 are provided, and a pair of rolls 6 is provided between each of the pair of rolls 6, and a pair of rolls 6 is supplied. Bank rubber 5 is formed on each of the rolls 6. Then, the topping rubber is formed by rolling the bank rubber 5 between the pair of rolls 6, and the formed topping rubber is covered on both surfaces of the dip anti-plate 4 that passes between the two sets of rolls 6. Thus, the top substrate 3 is produced.

  A sensor 7 serving both as a temperature detection sensor and a rubber amount detection sensor detects the temperature and amount of the bank rubber 5, and transmits the detected temperature and amount of the bank rubber 5 to the supplier of the feed rubber.

(2) Supply of Rubber FIG. 3 is a view showing an outline of the supply of rubber in a conventional apparatus for producing a top member for a tire member. A feed rubber for bank rubber is supplied to the calendar roll 1 as described below.

  As shown in FIG. 3, first, the kneaded rubber is heated by a hot roll 21 and heated to a predetermined temperature, and the feed rubber 20 is cut to a predetermined width by a cutter blade 22 to convey the conveyor belt. Send to CV. Then, the feed rubber 20 is fed to the calendar roll 1 (only a pair of rolls are shown in FIG. 3) by the conveyor belt CV.

  At this time, in the calender roll 1 of FIG. 1, the temperature and amount of the bank rubber 5 are insufficient, so that a portion thinner than the specification is formed on the manufactured top fabric 4 or the rubber is not covered at all. There may be cases where defective parts with rubber occur. Therefore, the sensor 7 detects the temperature and amount of the bank rubber 5 so as not to cause a defective rubber attachment to the dip anti-dip 4, and feeds back the detection result to the hot roll 21 and the cutter blade 22 shown in FIG. The hot roll 21 adjusts the temperature of the feed rubber 20 and the cutter blade 22 adjusts the amount of the feed rubber 20 according to the fed back temperature and amount of the bank rubber 5.

(3) Problems with the conventional manufacturing method for the top anti-tire member However, in the above-described top anti-manufacturing method, despite the feedback according to the measurement result of the sensor 7, In some cases, there was a failure with rubber.

2. Background to the Present Invention As a result of the present inventor examining the reason why the feeding roller of the appropriate temperature and amount is not supplied to the calendar roll despite the feedback of the detection result of the sensor as described above. In the conventional apparatus, the heating roll for adjusting the temperature of the feed rubber and the cutter blade for adjusting the amount are separated from the calender roll to which the feed rubber is supplied. It turned out that the amount of feed rubber could not be supplied to the calendar roll in real time.

  In this regard, the present inventor has made various studies, and has a rubber supply section including an extruder for extruding rubber while heating and a cutter blade for cutting the extruded rubber into a predetermined width dimension. It was considered that the rubber feed was directly supplied from the rubber supply unit to the calender roll without using a conveyor belt.

  As a result, the feed rubber adjusted to an appropriate temperature and amount by feedback of the detection result of the sensor can be immediately supplied to the calender roll, so that the bank rubber can be quickly adjusted to the appropriate temperature and amount. On the other hand, it is possible to suppress the occurrence of defective rubber attachment.

  Further, in the present invention, the temperature adjustment of the feed rubber according to the detection result of the sensor is performed by an extruder instead of the conventional hot roll, so that the temperature of the feed rubber can be adjusted more accurately than before. it can.

3. DESCRIPTION OF EMBODIMENTS Hereinafter, the present invention will be described in detail based on an embodiment of the present invention.

  The tire member top counter manufacturing apparatus according to the present embodiment includes a calender roll and a rubber supply unit that feeds rubber to the calender roll. As in the conventional case, the calendar roll 1 is produced by rolling the bank rubber 5 formed by the feed rubber supplied from the rubber supply unit and topping the bank rubber 5 on the upper and lower surfaces of the dip counter 4 (see FIG. 1). ).

  In addition, a sensor 7 serving as both a temperature detection sensor and a rubber amount detection sensor detects the temperature and amount of the bank rubber 5, and the detected temperature and amount of the bank rubber 5 are transmitted to a rubber supply unit described later.

  However, the manufacturing apparatus for the top member for a tire member according to the present embodiment is greatly different from the conventional one in that a rubber supply unit for supplying rubber to the calendar roll is provided in the vicinity of the calendar roll. Here, the vicinity means that the distance between the rubber supply unit and the calendar roll is a distance that does not hinder the quick adjustment of the amount and temperature of the bank rubber to an appropriate state before the occurrence of defective rubber (for example, 2 to 3 m).

  Since the rubber supply unit is provided in the vicinity of the calendar roll in this way, the feed rubber G whose temperature and amount are adjusted according to the detection result of the sensor 7 can be transported over a long distance as in the prior art. Can be fed directly to the calendar roll. As a result, the bank rubber in the calendar roll can be quickly adjusted to an appropriate temperature and amount, and it is possible to appropriately suppress the occurrence of defective rubber on the top side after production.

  Next, the structure of the rubber supply part in this Embodiment is demonstrated concretely. FIG. 2 is a perspective view showing an outline of a rubber supply unit of the manufacturing apparatus for a top member for a tire member in the present embodiment.

  The rubber supply unit 2 of the present embodiment includes an extruder (not shown), a cutter blade 10, and a free roll 9.

  As the extruder, a normal rubber extruder can be used. Further, the extruder is provided with a temperature adjusting means (not shown), and this temperature adjusting means is electrically connected to the sensor 7 (see FIG. 1), and the temperature of the bank rubber 5 is transferred from the sensor 7 to the temperature adjusting means. The detection result of is transmitted. The temperature adjusting means adjusts the temperature of the feed rubber extruded from the extruder in accordance with the temperature of the bank rubber 5 detected by the sensor 7.

  As shown in FIG. 2, the cutter blade 10 is provided so that a blade edge | tip contacts the surface of the free roll 9 provided in the downstream of the extruder, and the rubber sheet 8 after extrusion is provided along a longitudinal direction. Disconnect. The cutter blade 10 can be moved along the width direction of the rubber sheet 8 after extrusion.

  The cutter blade 10 is provided with a rubber amount adjusting means (not shown), and the rubber amount adjusting means is electrically connected to the sensor 7. The detection result of the amount of the bank rubber 5 from the sensor 7 to the rubber amount adjusting means. Is sent. The rubber amount adjusting means adjusts the position of the cutter blade 10 in accordance with the amount of bank rubber detected by the sensor 7, thereby cutting the rubber sheet 8 after extrusion into a predetermined width and supplying it to the calendar roll. The amount of feed rubber G to be adjusted is adjusted.

  Specifically, one (left side in the figure) rubber cut by the cutter blade 10 is directly supplied to the calendar roll 1 as a feed rubber G, and the other (right side) rubber is returned to the hopper of the extruder.

  The temperature and amount of the feed rubber G directly supplied to the calendar roll 1 are appropriately adjusted as described above and are supplied to the calendar roll 1 in real time, so that the bank rubber 5 is set to an appropriate temperature and amount. It can be adjusted quickly.

  As described above, according to the present embodiment, the feed rubber G whose temperature and amount are adjusted according to the detection result of the sensor 7 is directly transferred to the calendar roll without being transported over a long distance as in the prior art. Supplied. As a result, the bank rubber 5 in the calendar roll 1 can be quickly adjusted to an appropriate temperature and amount, and it is possible to appropriately suppress the occurrence of defective rubber on the top side after production.

  In addition, the temperature adjustment of the feed rubber according to the detection result of the sensor is performed with an extruder instead of the conventional hot roll, and the extruder can apply heat to the rubber with a cylinder, screw, head, Depending on the temperature of the bank rubber detected by the sensor, the temperature of the feed rubber can be adjusted more accurately than before.

  Next, the present embodiment will be described more specifically based on examples.

1. Example Top fabric was manufactured using the manufacturing apparatus of the top fabric for tire members of this Embodiment mentioned above. In other words, a rubber supply unit is installed in the vicinity of the calender roll, and a manufacturing device is used that can feed directly to the calender roll from the rubber supply unit (adjusted rubber) whose temperature and amount are adjusted according to the detection result of the sensor. It was.

2. Comparative example The top fabric was manufactured using the conventional manufacturing apparatus of the top fabric for tire members. That is, a manufacturing apparatus was used in which a feed rubber (adjustment rubber) whose temperature and amount were adjusted according to the detection result of the sensor was supplied to the calender roll via a conveyor belt. The other conditions were set the same as in the example.

3. Evaluation Method and Evaluation Results In the examples and comparative examples, the same type of rubber was used, and the evaluation was carried out with the same rubber gauge and production rate. Specifically, a top fabric having a width of 14.50 mm and a thickness of 0.95 mm was manufactured.

(1) Measurement of calendar roll arrival time The time required for the adjustment rubber to reach the calendar roll was measured. The results are shown in Table 1.

  From Table 1, it can be seen that in the example, the adjustment rubber reached the calender roll faster than the comparative example, and the amount of bank rubber can be quickly returned to the original appropriate amount.

(2) Measurement of bank rubber temperature Further, the elapsed time (s) after the bank rubber in the calendar roll deviated from the temperature set value (100 ° C) and the heat generation temperature (° C) of the bank rubber were measured. The results are shown in Table 2.

  From Table 2, unlike the comparative example in which the temperature of the bank rubber does not decrease even after 20 seconds and does not return to the original temperature, in the examples, the temperature of the bank rubber decreases with the passage of time, and the original after 20 seconds. It turns out that it has returned to temperature and can be rapidly returned to a temperature setting value.

(3) Number of occurrences of defects with rubber In addition, the number of cases where defects with rubber occurred while the above-mentioned top substrate was manufactured at 50,000 m was examined. The results are shown in Table 3. In Table 3, the measurement result of the calendar roll arrival time is shown again as the time required for adjustment, and the presence or absence of the temperature adjustment system is also described.

  From Table 3, it can be seen that in the example provided with the temperature adjustment system, the number of occurrences of defective rubber is reduced although the time required for adjustment is as short as 5 seconds. On the other hand, in the comparative example in which the temperature adjustment system is not provided, it can be seen that the time required for the adjustment is as long as 30 seconds, and many defective rubbers are generated.

  From these results, the feed rubber whose temperature and amount are adjusted is directly supplied to the calender roll, so that the feed rubber having the temperature corresponding to the detection result of the sensor 7 is supplied to the calender roll 1 in real time. It was confirmed that the top anti-rubber defect could be suppressed.

  While the present invention has been described based on the embodiments, the present invention is not limited to the above embodiments. Various modifications can be made to the above-described embodiment within the same and equivalent scope as the present invention.

DESCRIPTION OF SYMBOLS 1 Calendar roll 2 Rubber | gum supply part 3 Top anti | reverse | dip 4 Anti-dip 5 Bank rubber 6 Roll 7 Sensor 8 Rubber sheet 9 Free roll 10, 22 Cutter blade 20, G feeding rubber 21 Hot-rolling roll CV conveyor belt

Claims (2)

A tire member top anti-manufacturing device that manufactures a tire member top anti-material by topping rubber on the dip anti-plate,
An extruder for extruding the feed rubber at a predetermined temperature; and a rubber supply unit that has a cutter blade for cutting the extruded feed rubber into a predetermined width and supplies the cut feed rubber;
A calendar roll for producing a top web by rolling a bank rubber formed by the feed rubber supplied from the rubber supply section and topping the top and bottom surfaces of the dip web;
A rubber amount detection sensor for detecting the amount of bank rubber on the calendar roll;
A temperature detection sensor for detecting the temperature of the bank rubber on the calendar roll;
According to the amount of the bank rubber detected by the rubber amount detection sensor, the rubber amount adjusting means for adjusting the amount of the rubber to be fed by adjusting the width of the rubber to be fed from the extruder by the cutter blade;
In accordance with the temperature of the bank rubber detected by the temperature detection sensor, temperature adjusting means for adjusting the temperature of the feed rubber extruded from the extruder,
The rubber supply unit is provided in the vicinity of the calendar roll,
An apparatus for manufacturing a top member for a tire member, wherein the feeding rubber fed from the rubber feeding unit is directly fed to the calender roll. A method for producing a top member for a tire member by manufacturing a top member for a tire member by topping rubber on the dip portion,
A rubber supply step of extruding the feed rubber at a predetermined temperature by an extruder of a rubber supply unit, cutting the extruded feed rubber into a predetermined width by a cutter blade of the rubber supply unit, and supplying the cut feed rubber When,
A top anti-manufacturing step of producing a top anti-roll by rolling a bank rubber formed by the feed rubber supplied from the rubber supply unit with a calendar roll and topping the upper and lower surfaces of the dip anti-
A rubber amount detection step of detecting the amount of bank rubber on the calendar roll by a rubber amount detection sensor;
A temperature detection step of detecting the temperature of the bank rubber on the calendar roll by a temperature detection sensor;
In accordance with the amount of the bank rubber detected by the rubber amount detection sensor, a rubber amount adjustment step of adjusting the amount of the feed rubber by adjusting the width dimension of the feed rubber sent from the extruder by the cutter blade;
In accordance with the temperature of the bank rubber detected by the temperature detection sensor, a temperature adjustment step of adjusting the temperature of the feed rubber extruded from the extruder,
The rubber supply unit is provided in the vicinity of the calendar roll,
The method for manufacturing a top member for a tire member, characterized in that the feeding rubber fed from the rubber feeding section is directly fed to the calender roll.

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