JP6514032B2 - METHOD AND APPARATUS FOR MANUFACTURING TIRE MEMBER - Google Patents

Description

  The present invention relates to a method and an apparatus for manufacturing a tire member in which a plurality of narrow fiber cord bands are manufactured by further dividing the top fabric cut from a wide raw fabric.

  Conventionally, in the process of manufacturing a pneumatic tire, at the time of molding of a green tire for the purpose of improving tire durability and running stability by preventing the radial growth of the tire due to centrifugal force at high speed. Generally, a narrow fiber cord band (jointless band: hereinafter, also referred to as "JLB tape") in which a predetermined number of parallel arranged fiber cords are coated with topping rubber is generally wound on a tire forming drum It has been done.

  In this JLB tape, a wide original fabric obtained by coating a topping rubber on both sides of a wide textile in which a large number of fiber cords are arranged in parallel at a predetermined pitch is cut into a top fabric, and then it is further processed. This is produced by dividing and rolling this top roll (for example, Patent Document 1).

JP, 2010-264518, A

  However, in the manufacturing process of the JLB tape, when cutting and winding in a narrow width, a defective portion may be generated in the JLB tape due to a defective material problem or the like, and it may be necessary to stop the line forcibly. In such a case, after stopping the line and removing the defective portion of the JLB tape, the normal portions of the JLB tape are jointed to restart the line, but conventionally, it takes time to restart the line. , Caused the loss of time.

  Accordingly, the present invention provides a method and an apparatus for manufacturing a tire member capable of reducing the occurrence of temporal loss from stop to restart of a line in the manufacture of a narrow fiber cord band (JLB tape). To be an issue.

  MEANS TO SOLVE THE PROBLEM This inventor earnestly studied about the solution of the above-mentioned subject, it discovers that the said subject can be solved by the invention described below, and came to complete this invention.

The invention according to claim 1 is
A method of manufacturing a tire member, comprising: manufacturing a plurality of narrow fiber cord bands by cutting a top cord covered with a topping rubber with a fiber cord arranged at a predetermined pitch with a topping rubber,
When it is necessary to remove a portion of the narrow fiber cord band formed by cutting the top roll, the portion may be removed downstream from the cutting point,
On the downstream side of the cut portion, the plurality of narrow fiber cord bands are held by the pressing means to hold the tension applied to the top and the narrow fiber cord bands, and then the pressing means It is a manufacturing method of a tire member characterized by cutting the narrow fiber cord band at the downstream side, and removing the said part.

  According to the present invention, there is provided a method and an apparatus for manufacturing a tire member capable of reducing the occurrence of temporal loss from stop of line to restart in the manufacture of narrow fiber cord band (JLB tape). be able to.

It is a schematic diagram which shows the manufacturing apparatus of the conventional tire member. It is a perspective view explaining generation | occurrence | production of the malfunction in the manufacturing apparatus of the conventional tire member. It is a schematic diagram which shows one Embodiment of the manufacturing apparatus of the tire member concerning this invention. It is an enlarged photograph figure showing the control means in one embodiment of the manufacturing device of the tire member concerning the present invention.

  Hereinafter, an embodiment of a method and an apparatus for manufacturing a tire member according to the present invention will be described with reference to the drawings.

1. Prior to describing the embodiments of the present invention, the problems in the above-described conventional tire member manufacturing method and apparatus will be specifically described.

(1) Conventional Tire Member Manufacturing Method and Manufacturing Apparatus FIG. 1 is a view schematically showing a conventional tire member manufacturing apparatus. Moreover, FIG. 2 is a figure explaining generation | occurrence | production of the malfunction in the manufacturing apparatus of the conventional tire member, and (a) has shown the mode before malfunction generation | occurrence | production, (b) after malfunction generation | occurrence | production.

  As shown in FIG. 1, the conventional tire member manufacturing apparatus 50 includes a top anti-winding roller 12 on which the top anti-T is wound, and a plurality of guide rollers 14 for guiding the top anti-T and JLB tape J. And a top anti-cutting means 18 for cutting the top anti-T into a plurality of JLB tapes J, and a JLB tape winding bobbin 16 for winding up each JLB tape J.

  Using the tire member manufacturing apparatus 50 having such a configuration, the top roll T is unrolled from the top roll-up roller 12 and guided by the guide roller 14 to the cutting section where the top roll cutting means 18 is disposed, The cut top anti-T is cut into plural (eight in FIG. 1) narrow JLB tapes J by the top anti-cutting means 18 and then each cut JLB tape J is taken up to each JLB tape winding bobbin 16 By being guided by the guide roller 14 and wound up, the JLB tape J is manufactured.

  In the tire member manufacturing apparatus 50, for example, as shown in FIG. 2A, a plurality of sharp disk-shaped cutter blades 22 are predetermined on the outer peripheral surface of the rotating shaft 20 as the top non-cutting means 18 A cutter provided at intervals is used. By passing the top anti-T along the top anti-cutting means 18 toward the downstream side, the top anti-T is cut by the cutter blade 22 into a plurality of JLB tapes J.

(2) Problems in the conventional tire member manufacturing method and manufacturing apparatus However, as described above, when winding each JLB tape J obtained by cutting the top end T into a narrow width, JLB is caused by a defect in the defective material or the like. When a defective portion occurs in the tape J, the line is forcibly stopped to remove the defective portion of the JLB tape J, and then the normal portions of the JLB tape are jointed to restart the line.

  When the JLB tape J is cut to remove the defective portion of the JLB tape J, the tension applied to the top anti-T and JLB tape J becomes weak in the cutting section, that is, between the two guide rollers 14 before and after the top anti-cutting means 18 The top anti-T and JLB tape J sag downward due to their own weight as shown by the one-dot chain line in FIG. As a result, as shown in FIG. 2B, in the cutting section, the cutter blade 22 of the top anti-cutting means 18 inserted between the cords of the top anti-T is pulled out.

  Therefore, in order to restart the tire member manufacturing apparatus 50 after removing the defective portion of the JLB tape J, the two cut ends of the cut JLB tape J are jointed to apply a predetermined tension, and thereafter , It is necessary to set each of the cutter blades 22 of the top anti-cutting means 18 again, resulting in the occurrence of temporal loss.

2. Method and apparatus for manufacturing tire member according to the present embodiment The inventor of the present invention has observed that the generation of temporal loss in the manufacture of the conventional tire member described above stops the line and removes the defective portion of the JLB tape J. Because the tension applied to the top anti-T and JLB tape J in the cutting section is lowered and the cutter blade 22 of the top anti-cutting means 18 inserted between the top anti-T cords is pulled out. Stop the line and remove the defective part of the JLB tape J, hold the tension of the top anti-T of the cutting section and the tension of the JLB tape J as it is and insert the top anti-cutting means inserted between the top anti-T cord If it is possible to prevent the 18 cutter blades 22 from falling out, it is considered that generation of temporal loss can be reduced. We came to complete the light. Hereinafter, the present invention will be specifically described.

(1) Device for Manufacturing Tire Member According to Present Embodiment FIG. 3 is a schematic view showing a device for manufacturing a tire member according to the present embodiment.

  As shown in FIG. 3, the tire member manufacturing apparatus 10 according to the present embodiment includes the top anti-winding roller 12, the plurality of guide rollers 14, the plurality of JLB tape winding bobbins 16, and the top anti-cutting means 18. It is the same as the manufacturing apparatus of the conventional tire member in the point provided. However, the apparatus for manufacturing a tire member according to the present embodiment is different from the conventional apparatus for manufacturing a tire member in that the apparatus further includes JLB tape pressing means 30.

  That is, in the tire member manufacturing apparatus 10 of the present embodiment, when a portion of the JLB tape J is removed downstream of the cutting section, the downstream end of the cutting section, for example, the downstream end of the cutting section shown in FIG. , The JLB tape holding means 30 holds all of the plurality of JLB tapes J.

  Thereby, the tension of the top anti-T and the plurality of JLB tapes J in the cutting section is held in the state shown in FIG. 2A, and the blade of the top anti-cutting means 18 is pulled out from between the plurality of JLB tapes J Since it can be avoided, unnecessary parts can be removed, materials can be joined, and the tire component manufacturing apparatus can be restarted without causing a large time loss.

  Hereafter, each member which comprises the manufacturing apparatus of the tire member which concerns on above-described this embodiment is demonstrated concretely.

(A) Top anti-winding roller The top anti-winding roller 12 is wound with a wide top anti-T, in which fiber cords arranged at a predetermined pitch are coated with topping rubber. In addition, this top roll T is produced by being cut from a wide raw fabric.

(B) Top Anti-Cutting Means The top anti-cutting means 18 is disposed in the cutting section downstream of the top anti-winding roller 12. The top anti-cutting means 18 is for cutting a wide top anti-trail T at a predetermined cutting pitch to obtain a plurality of JLB tapes (narrow-width fiber cord bands) J. As the top reverse cutting means 18, for example, as shown in FIG. 2A, a cutter having a plurality of sharp disk-shaped cutter blades 22 provided at predetermined intervals on the outer peripheral surface of the rotating shaft 20 is used. Can.

  When the top anti-T passes through the top anti-cutting means 18, the top anti-T is cut by the cutter blade 22 into a plurality of JLB tapes J. The rotating shaft 20 is rotated by the rotational driving force of a motor (not shown) disposed on an extension of the rotating shaft 20.

(C) JLB Tape Winding Bobbin The JLB tape winding bobbin 16 is disposed downstream of the cutting section and is for winding the JLB tape J.

(D) JLB tape pressing means The top anti-winding roller, top anti-cutting means, and JLB tape winding bobbin described above are basically the same as the conventional one, and the features of this embodiment are the JLB tape pressing described below. It is in the means.

  The JLB tape pressing means 30 is disposed between the top non-cutting means 18 and the plurality of JLB tape winding bobbins 16, that is, on the downstream side of the cutting section (the downstream end of the cutting section in FIG. 1) . The JLB tape holding means 30 holds all of the plurality of JLB tapes J at the downstream end of the cutting section, and the tension of the top anti-T and JLB tape J in the cutting section where the top anti-cutting means 18 is disposed And prevent the cutter blade 22 of the top anti-cutting means 18 from coming off between the plurality of JLB tapes J.

  As the JLB tape holding means 30, as shown in FIG. 4, a roller having a rotation axis parallel to the conveyance surface in a direction perpendicular to the conveyance direction of the JLB tape J is used. On the outer peripheral surface of the roller, it is preferable that fine irregularities for preventing slippage be formed on the surface so that the JLB tape J can be reliably pressed and the tension can be properly held. For example, knurling etc. can be mentioned.

(2) Method of Manufacturing Tire Member According to Present Embodiment Next, a method of manufacturing a JLB tape J using the tire member manufacturing apparatus 10 configured as described above will be described. In the following, a case will be described by way of example in which eight JLB tapes made of 80 nylon cords and 80 mm wide by 10 nylon cords 10 mm wide are manufactured.

  By conveying the top portion T in the direction of the arrow using the tire member manufacturing apparatus 10 shown in FIG. 3, it is conveyed to the cutting section in which the top portion cutting means 18 is disposed. The topping rubber between the fiber cords is cut by rotating the cutter blade 22 of the top anti-cutting means 18 parallel to the fiber cords embedded in the top anti-T. In this way, the top anti-T is divided into a plurality of JLB tapes J having the same number of fiber cords embedded therein.

  The plurality of divided JLB tapes J are wound around the JLB tape winding bobbin 16 through the guide rollers 14 respectively.

  Here, when a defective portion occurs in the JLB tape due to a defective material trouble or the like, and it becomes necessary to remove a part of the JLB tape J in production downstream of the cutting section, the tire member manufacturing apparatus 10 is stopped. .

  Then, before cutting the JLB tape J to be removed, the JLB tape holding means 30 holds all of the plurality of JLB tapes J and cuts the top anti-T into the plurality of JLB tapes J. Hold the tension of JLB tape J.

  Thereafter, even if the JLB tape J is cut in order to remove the defective portion, the tension of the top anti-T and JLB tape J in the cut section is not weakened because the JLB tape holding means 30 holds the JLB tape J. Therefore, the top anti-T and JLB tape J do not sag downward by their own weight, and the cutter blade 22 of the top anti-cutting means 18 can be prevented from coming off between the plurality of JLB tapes J in the cutting section. .

  Therefore, the tire member manufacturing apparatus 10 is cut after the time loss generated from the stop of the line to the restart does not become large as in the past and the portion to be removed from the JLB tape J is removed. The two cut ends of JLB tape J can be joined and restarted immediately, reducing the occurrence of temporal losses.

1. EXAMPLE A tire member manufacturing apparatus 10 having JLB tape pressing means 30 is used to temporarily stop the tire member manufacturing apparatus 10 to remove a part of the JLB tape J being manufactured. When the time loss until jointing and restarting the two cut ends of the cut JLB tape J was measured, it took 1 minute to restart.

2. Comparative Example 2 A conventional tire member manufacturing apparatus 50 is used to temporarily stop the tire member manufacturing apparatus 50 to remove a part of the JLB tape J being manufactured, and then cut 2 of the JLB tape J. When the time loss until jointing and restarting two cut ends was measured, the time required to restart was 6 minutes.

  From this result, it has been confirmed that generation of a temporal loss in restart of the line temporarily stopped due to the occurrence of a defective material problem can be reduced by using the tire member manufacturing apparatus according to the present embodiment.

  As mentioned above, although the present invention was explained based on an embodiment, the present invention is not limited to the above-mentioned embodiment. Various modifications can be made to the above embodiment within the same and equivalent scope of the present invention.

10, 50 Tire member manufacturing apparatus 12 top anti-winding roller 14 guide roller 16 JLB tape winding bobbin 18 top anti-cutting means 20 rotating shaft 22 cutter blade 30 JLB tape pressing means J JLB tape T top anti

Claims (1)

A method of manufacturing a tire member, comprising: manufacturing a plurality of narrow fiber cord bands by cutting a top cord covered with a topping rubber with a fiber cord arranged at a predetermined pitch with a topping rubber,
When it is necessary to remove a portion of the narrow fiber cord band formed by cutting the top roll, the portion may be removed downstream from the cutting point,
On the downstream side of the cut portion, the plurality of narrow fiber cord bands are held by the pressing means to hold the tension applied to the top and the narrow fiber cord bands, and then the pressing means A method of manufacturing a tire member, comprising cutting the narrow fiber cord band at the downstream side to remove the portion.

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