JP6108216B2 - Monospiral belt winding method and monospiral belt winding apparatus for raw tire - Google Patents

Description

  The present invention relates to a raw tire before a pneumatic tire is vulcanized (in the specification and claims, “raw tire before a pneumatic tire is vulcanized” is simply referred to as “raw tire”). The present invention relates to a device for winding a monospiral belt (a cord coated with raw rubber) on a tread surface and a winding method thereof.

  To reinforce the tread of a pneumatic tire on a heavy truck that is loaded with a large amount of ore and runs on wasteland, a thick steel cord is wound around the outer surface of the tread of the pneumatic raw tire along the direction of rotation of the raw tire. There was a cord winding device to be attached (see Patent Document 1).

  In this cord winding device, since the steel cord is thick, by shortening the fluid cylinder while holding the chuck provided at the piston tip of the fluid cylinder at the end of the steel cord, the steel cord is Wound around the outer surface of the tread of the raw tire in the circumferential direction of the raw tire, which not only increases the size of the cord winding device, but also complicates the structure. It has been difficult to automate the contact operation and the cord cutting operation.

  In a small vehicle, particularly a motorcycle, since the bank angle of the vehicle body is large, as shown in FIG. 14, the cross-sectional shape of the outer periphery of the raw tire is formed in a semicircular shape, thereby reducing the weight of the raw tire. On the other hand, in the conventional cord winding device 03 shown in FIGS. 15 to 19, one of the tread peripheral surfaces 01a of the raw tire 01 is provided so as to be able to withstand a large centrifugal force acting on the tread accompanying high-speed running. The cord 02 is spirally wound around the tread circumferential surface 01a along the rotation direction of the raw tire 01 rotatably supported by the tire pivoting portion 04a of the base 04 from the side to the other side of the tread circumferential surface 01a. I was able to do it.

  The base 04 of the cord winding device 03 is provided with a rail (not shown) oriented in the horizontal direction in FIGS. The main body drive cylinder 06 is interposed between the base 04 and the apparatus main body 05, and the apparatus main body drive cylinder 06 is expanded and contracted to extend the raw tire. The device body 05 facing the tread peripheral surface 01a of 01 moves forward or backward toward the raw tire 01, and accordingly, the winding roller 07 rotatably supported approaches the raw tire 01 to generate the raw tire 01. The tread circumferential surface 01a of the tire 01 is brought into contact with the tread circumferential surface 01a of the green tire 01 or can be moved backward from the tread circumferential surface 01a.

  Further, a roller pressing cylinder 08 is attached to the main body 05 toward the pneumatic green tire 01, and a pressing roller 09 is pivotally attached to the tip of the piston rod 08a of the roller pressing cylinder 08. When the piston rod 08a protrudes, the pressing roller 09 comes into contact with the tread peripheral surface 01a of the raw tire 01, and the cord 02 wound around the pressing roller 09 is strongly pressed and adhered to the tread peripheral surface 01a of the raw tire 01. It has become.

  Further, the cutter 010 is positioned below the roller pressing cylinder 08 and is attached to the apparatus main body 05 so as to approach the raw tire 01 from below and obliquely upward.

  In the state shown in FIG. 15 just before the winding of the cord 02 around the tread peripheral surface 01a of the raw tire 01 by the cord winding device 03 is completed in accordance with the counterclockwise rotation of the raw tire 01, winding is performed. The contact of the cord 02 between the winding portion 02a of the cord 02 wound around the tread peripheral surface 01a of the tire 01 by the roller 07 and the pressing portion 02b of the cord 02 pressed against the tread peripheral surface 01a by the pressing roller 09 The contact portion 02c adheres to the tread peripheral surface 01a of the raw tire 01.

  However, when the shortening stroke of the support driving cylinder 06 starts while the raw tire 01 is stopped, the roller pressing cylinder 08 expands in conjunction with the shortening of the supporting drive cylinder 06 as shown in FIG. Since the pressing roller 09 remains in contact with the tread peripheral surface 01a of the raw tire 01 in the stopped state, the cord 02 is wound around the tread peripheral surface 01a of the raw tire 01 by the winding roller 07. The winding portion 02a is separated from the tread peripheral surface 01a of the raw tire 01, and the pressing portion 02b of the cord 02 pressed against the tread peripheral surface 01a of the raw tire 01 by the pressing roller 09 is applied to the peripheral surface 01a of the raw tire 01. As a result of maintaining the adhered state, the contact portion 02c between the winding portion 02a and the pressing portion 02b is peeled off from the tread peripheral surface 01a of the raw tire 01.

  Next, as shown in FIG. 17, the cord 02 positioned between the winding roller 07 and the pressing roller 09 is cut by a cutter 010, and then the roller pressing cylinder 08 remains in an expanded state. Is rotated counterclockwise, the cord is peeled off and the portion 02c is pressed by the pressing roller 09 as shown in FIG. 19 through the state shown in FIG. The cord supply side end portion 02c is stuck to the tread peripheral surface 01a of the raw tire 01 by being pressed against the surface 01a.

  However, when the cord 02 of the cord 02 adhered to the tread peripheral surface 01a of the raw tire 01 is once peeled off from the tread peripheral surface 01a of the raw tire 01, the cord 02 covered with the cord 02 is peeled off. The raw rubber portion of the portion 02c is less likely to be in close contact with the tread peripheral surface 01a of the pneumatic raw tire 01 from the main body portion of the cord 02, and the portion 02c is deformed into an irregular shape by being peeled off, so that it can be reliably attached. As a result, the cord 02 had to be manually adhered to the tread peripheral surface 01a of the pneumatic green tire 01, making it difficult to fully automate.

JP 2009-113359 A

  An object of the present invention is to provide a monospiral belt winding apparatus and a monospiral belt winding method for a raw tire that overcomes such difficulties.

In order to solve the above-mentioned problem, the invention according to claim 1 is characterized in that a winding roller around which a monospiral belt fed from a monospiral belt supply source is wound is advanced toward the outer peripheral surface of the tread of the raw tire. The monospiral belt was brought into contact with the outer peripheral surface of the tread of the tire, and the tip of the monospiral belt wound around the outer peripheral surface of the tread of the raw tire was pressed against the outer peripheral surface of the tread of the raw tire with a pressing roller. By rotating the green tire in a state, the monospiral belt is wound around the rotation direction of the tread outer peripheral surface of the green tire from one side to the other side of the tread outer peripheral surface of the green tire, When the winding of the mono spiral belt is finished,
The green tire is started after the winding roller starts to move backward, and after the separation start portion that has started to move away from the winding roller at the start of the winding roller reverse movement reaches between the pressing roller and the tread outer peripheral surface of the green tire. To stop the rotation and cut the monospiral belt between the winding roller and the pressing roller,
Thereafter, characterized again by rotating the raw tire in the winding direction, the wrapping on the raw tire mono spiral belt with by the pressing roller between the pressing roller and the mono-spiral belt after cutting end This is a method for winding a monospiral belt of a raw tire.

  According to the second aspect of the present invention, after the cutting tip portion of the monospiral belt cut by the monospiral belt cutting means is adsorbed by the adsorber, the monospiral belt cutting tip portion adsorbed by the adsorber is used as the raw tire. 2. The method according to claim 1, wherein after adhering to the tread, the adsorber is separated from the cutting end of the monospiral belt.

The invention according to claim 3 is a monospiral belt in which the monospiral belt is formed by twisting a plurality of fine steel wires.
Before cutting the monospiral belt between the pressing roller and the winding roller with the monospiral belt cutting means,
A cutting tip of the monospiral belt that is cut by the monospiral belt cutting means and dropped after moving the electromagnetic adsorber instead of the adsorber below the winding roller and the monospiral belt cutting means Part is adsorbed to the electromagnetic adsorber,
When the winding roller to tread surface of the green tire is in contact with close, characterized in that to adhere the cut away end of the mono-spiral belt adsorbed to the electromagnetic absorber on the tread surface of the raw tire A method for winding a monospiral belt of a green tire according to claim 2.

The invention according to claim 4 is a green tire rotating means for rotating the green tire forward and backward in the winding direction of the monospiral belt,
A winding roller that presses the wound monospiral belt against the outer surface of the tread of the green tire;
Winding roller advance / retreat means for moving the winding roller forward or backward toward the green tire;
A monospiral belt wound around the raw tire at a position advanced in the rotation direction of the raw tire from a position where the monospiral belt is pressed against the raw tire by the winding roller, on the outer circumferential surface of the tread of the raw tire. A pressing roller for pressing and crimping;
A pressing roller advancing / retreating means for advancing or retreating the pressing roller toward the raw tire and pressing the pressing roller against the tread outer peripheral surface of the raw tire, or separating the pressing roller from the tread outer peripheral surface of the raw tire;
Monospiral belt cutting means for cutting the monospiral belt between the winding roller and the pressing roller;
A monospiral belt winding control device for controlling the raw tire rotating means, the winding roller advance / retreat means, and the monospiral belt cutting means to wind the monospiral belt around the tread outer peripheral surface of the raw tire; ,
The monospiral belt winding control device includes:
The monospiral belt that presses the front end portion of the monospiral belt wound around the winding roller against the outer circumferential surface of the tread of the green tire by the forward movement of the winding roller advancing / retreating means and is in contact with the pressing roller After the front end of the green tire is pressed against the outer circumferential surface of the tread of the green tire, the winding of the monospiral belt is started by the rotation operation in the winding direction of the green tire rotating means,
The winding roller is moved backward while the green tire is rotated while the monospiral belt is pressed against the outer surface of the tread of the green tire when the first predetermined time elapses before the winding is completed. ,
When the winding roller reaches the retreat limit position, after stopping the rotation of the raw tire rotating means,
After the monospiral belt between the pressing roller pressing the tread outer peripheral surface of the green tire and the retracted winding roller is cut by the monospiral belt cutting means, the green tire is again turned by the green tire rotating means. Rotating and controlling the rear end portion of the monospiral belt not pressed against the outer peripheral surface of the raw tire tread against the outer peripheral surface of the raw tire tread to finish the winding of the outer peripheral surface of the tread of the raw tire A device for winding a monospiral belt of a raw tire.

  According to a fifth aspect of the present invention, there is provided an adsorber that can be detachably adsorbed to a monospiral belt that moves forward or backward toward the green tire between the winding roller and the pressing roller and hangs down from the winding roller. 5. The monospiral belt winding device for a green tire according to claim 4, further comprising:

In the invention according to claim 6, the monospiral belt is obtained by twisting a plurality of fine steel wires and covering the surface with raw rubber.
6. The monospiral belt winding device for a raw tire according to claim 5, wherein the adsorber is an electromagnetic adsorber capable of adsorbing and detaching the monospiral belt hanging from the winding roller by electromagnetic force. .

The invention according to claim 7 is the monospiral belt winding device,
An apparatus main body including the winding roller, the pressing roller, and the monospiral belt cutting means is provided on the base so as to be able to move forward and backward
The winding roller advance / retreat means is interposed between the base and the apparatus main body,
A support is interposed between the base and the apparatus main body,
7. The monospiral of a pneumatic tire according to claim 6, wherein the apparatus main body is pivotally supported so as to be swingable to the left and right with respect to a raw tire pivotally supported about the horizontal line on the support body. It is a belt winding device.

  According to the method for winding a monospiral belt of a raw tire according to claim 1, it is possible to wind the monospiral belt around the peripheral surface of the raw tire reliably and efficiently without the need for manpower. It is possible to improve the production efficiency of the entering tire and reduce the production cost of the pneumatic tire.

  According to the method for winding a monospiral belt of a green tire according to claim 2, it is possible to improve the production cost by promoting further automation of pneumatic tire production.

  According to the method for winding a monospiral belt of a green tire according to claim 3, a monospiral belt that is easy to bend can be reliably wound around the tread of the green tire.

  According to the monospiral belt winding device for a green tire according to claim 4, the winding roller wound with the monospiral belt fed from the monospiral belt supply source is advanced toward the tread of the green tire to move the green tire. The raw tire is rotated by rotating the raw tire in a state where the monospiral belt wound around the tread of the raw tire is pressed against the tread of the raw tire with a pressing roller while being brought into contact with the peripheral surface. The monospiral belt is wound from one side of the tread to the other side along the rotational direction of the tread of the raw tire, and when the winding of the monospiral belt on the raw tire is finished, the rotation of the raw tire is temporarily stopped. Stop and then wind the green tire again with the pressing roller pressed against the tread of the green tire In synchronization with this, the winding roller is moved backward from the tread of the green tire little by little and is sandwiched between the tread of the green tire and the winding roller at the end of the winding of the monospiral belt. When the winding end of the monospiral belt reaches between the pressing roller and the tread of the green tire, the rotation of the green tire is stopped, and then only the winding roller is separated from the tread of the green tire. When the space between the winding roller and the pressing roller is sufficiently widened, the monospiral belt between the winding roller and the pressing roller is cut by the monospiral belt cutting means, and again, By rotating the green tire in the winding direction, the monos between the pressing roller and the cut end Iraruberuto can perform wrapping the raw tire with at the pressing roller.

  In addition, the monospiral belt can be reliably and efficiently wound around the peripheral surface of the raw tire without the need for manpower, so that the tire production efficiency can be improved and the tire production cost can be reduced.

  According to the monospiral belt winding device for a green tire according to claim 5, after adsorbing the tip portion of the monospiral belt cut by the monospiral belt cutting means to the adsorber, After adhering the adsorbed monospiral belt tip to the tread of the green tire, the adsorber can be separated from the monospiral belt tip, further promoting the automation of pneumatic tire production Thus, the production cost can be improved.

  Furthermore, according to the monospiral belt winding device for a raw tire according to claim 6, when the monospiral belt is a monospiral belt formed by twisting a plurality of fine steel wires, the monospiral belt cutting means Before cutting the monospiral belt between the pressing roller and the winding roller, an electromagnetic adsorber is disposed below the winding roller and the monospiral belt cutting means, and then the monospiral belt cutting means The end of the monospiral belt that has been cut and dropped is adsorbed to the electromagnetic adsorber, and when the winding roller approaches and comes into contact with the tread surface of the raw tire, the adsorbed to the electromagnetic adsorber Adhering the end of the monospiral belt to the tread surface of the pneumatic green tire can be accomplished. In addition, an easily bent monospiral belt can be reliably wound around the tread of the raw tire.

  According to the monospiral belt winding apparatus for a raw tire according to claim 7, the entire surface from one side to the other side of the outer surface of the tread of the green tire in which the cross-sectional shape of the tread of the green tire is formed in a semicircular shape. A monospiral belt can be wound over the entire area.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory diagram illustrating an outline of a monospiral belt winding device 3 for a raw tire 1 according to an embodiment of the present invention when viewed from the side, and the raw tire 1 before starting winding on the outer peripheral surface of the raw tire 1 It is the side view which illustrated the state which stopped. The pressing roller 10 is advanced from the state shown in FIG. 1 toward the green tire 1 that is rotationally driven by the green tire rotating means, and the front end of the monospiral belt 2 is pushed by the pressing roller 10 to the outer peripheral surface of the green tire 1. It is the side view which illustrated the state pressed on. The raw tire 1 continues to rotate counterclockwise from the state illustrated in FIG. 2, and the winding of the monospiral belt 2 around the raw tire 1 has reached the end time, and the state where the rotation of the raw tire 1 has stopped is illustrated. It is a side view. FIG. 4 is a side view illustrating a state in which the apparatus main body 6 of the monospiral belt winding apparatus 3 is gradually retracted from the state illustrated in FIG. 3, and the raw tire 1 is interlocked with this and slightly rotated counterclockwise. . In the state shown in FIG. 4, the winding portion 2 a of the monospiral belt 2 wound around the tread outer peripheral surface 1 a of the raw tire 1 by the winding roller 8 is further rotated in the counterclockwise direction of the raw tire 1. Thus, the pressing roller 10 is pressed against the outer circumferential surface of the tread of the raw tire 1, and the contact portion 2c between the winding portion 2a and the pressing portion 2b of the monospiral belt 2 is adhered to the tread circumferential surface 1a. It is the side view shown in figure. FIG. 6 is a side view illustrating a state in which the apparatus main body 6 is further retracted from the state illustrated in FIG. 5 and the raw tire 1 is rotated counterclockwise in synchronization with the apparatus main body 6 and stopped at that position. FIG. 7 is a side view illustrating a state in which the monospiral belt 2 is cut by the monospiral belt cutting means 11 after the counterclockwise direction of the green tire 1 is stopped in the state illustrated in FIG. 6. FIG. 8 is a side view illustrating a state in which the monospiral belt cutting means is retracted obliquely downward after the monospiral belt cutting means 11 cuts the monospiral belt 2 in the state illustrated in FIG. 7. In the state shown in FIG. 8, the pressing roller advance / retreat cylinder 9 is shortened and pressed while the cutting end 2e of the monospiral belt 2 cut by the monospiral belt cutting means 11 is supported by the monospiral belt adsorber 12. FIG. 6 is a side view illustrating a state where the roller 10 is about to be moved below the winding roller 8. In the state shown in FIG. 9, after the pressing roller advance / retreat cylinder 9 is shortened, the monospiral belt 2 is stopped by the electromagnetic force of the monospiral belt adsorber 12 from being adsorbed to the cutting tip 2 e. FIG. 6 is a side view illustrating a state in which the belt adsorber 12 is retracted. In the state illustrated in FIG. 10, the cut end portion 2 e of the monospiral belt 2 that hangs down from the winding roller 8 abuts against the pressing roller 10, and the side surface illustrating the completed state of winding the monospiral belt around the pneumatic green tire. FIG. FIG. 3 is an explanatory diagram illustrating the relationship between the monospiral control device 13 and the raw tire rotating means 0, the winding roller advance / retreat means 7, the pressing roller advance / retreat means 9 and the cutting means 11 controlled by the monospiral belt control device 13; . It is a principal part expanded sectional view enclosed with the circle | round | yen of FIG. It is a cross-sectional view of a pneumatic green tire produced according to the present invention. FIG. 5 is a side view illustrating a state immediately before finishing the winding of the monospiral belt around the tread of the raw tire in the conventional monospiral belt winding apparatus for a pneumatic raw tire. FIG. 16 is a side view illustrating a state in which the monospiral belt winding device is retracted from the state illustrated in FIG. 15 and a part of the monospiral belt wound around the tread of the green tire is peeled off from the tread. FIG. 17 is a side view illustrating a state in which the monospiral belt is cut by the monospiral belt cutting means in the state illustrated in FIG. 16. FIG. 18 is a side view illustrating a state in which the monospiral belt, which has been peeled off from the tread by rotating the green tire counterclockwise in the state illustrated in FIG. 17, is again pressed against the tread by the pressing roller. FIG. 19 is a side view illustrating a state where the pneumatic raw tire is further rotated counterclockwise in the state illustrated in FIG. 18.

  Hereinafter, a preferred embodiment shown in FIGS. 1 to 14 will be described with respect to a method and an apparatus for winding a monospiral belt of a green tire before the pneumatic tire of the present invention is vulcanized.

  In the optimum embodiment of the present invention, the target pneumatic tire is a motorcycle tire, but it can also be applied to other vehicle tires.

  In a pneumatic tire for a motorcycle, when the motorcycle runs at a high speed, the pneumatic tire is filled with high-pressure air so that the vehicle body can be stably supported against unevenness on the running surface. A monospiral belt extending from one side to the other side of the tread circumferential surface 1a of the raw tire 1 when manufacturing a pneumatic tire so that it can withstand the pressure and the large centrifugal force applied to the tire when traveling at high speed. 2 was spirally wound along the rotation direction of the green tire 1.

  The monospiral belt 2 formed by twisting a plurality of thin steel wires having a diameter of about 0.1 to 0.3 mm and covering the outer periphery with raw rubber is flexible, but has a property of being easily deformed when tension is not applied. Therefore, it is necessary to wrap the monospiral belt 2 around the tread peripheral surface 1a of the raw tire 1 in a state where a required tension is applied.

  For this reason, a monospiral belt tension applying device for applying tension to the monospiral belt 2 fed from a monospiral belt winding drum (not shown) is arranged on the left side of FIG. The monospiral belt 2 fed out from the apparatus is wound around a winding roller 8 as described later.

  1 to 11, a raw tire pivot member 4b is integrally provided at the front end of the horizontal member 4a of the base 4, and the raw tire 1 is connected to the upper end of the raw tire pivot member 4b via a pivot shaft 4c. A raw tire rotation drive mechanism 0 (not shown) is detachably connected to the raw tire pivot shaft 4c so that the raw tire 1 is rotated counterclockwise by the raw tire rotation drive mechanism 0. And is automatically stopped after the winding of the monospiral belt 2 around the raw tire 1 is completed.

  Further, a guide rail (not shown) directed in the front-rear horizontal direction with respect to the raw tire 1 is laid on the horizontal member 4a of the base 4, and the horizontal member 5a of the support 5 is placed on the guide rail. A winding roller advance / retreat cylinder 7 which is a winding roller advance / retreat means is interposed between the vertical member 4d and the vertical member 5b of the support body 5, and the support body 5 is moved back and forth horizontally by expansion and contraction of the winding roller advance / retreat cylinder 7. It can move in the direction.

  Further, a swing shaft 6b that vertically penetrates the front end of the horizontal member 6a of the apparatus body 6 is integrally attached to the horizontal member 5a of the support 5, and is a circle that is curved in a substantially semicircular shape around the swing shaft 6b. An arc-shaped guide rail 5c is laid on the horizontal member 5a, and a guide roller pivot portion 6c is provided at a position directly above the arc-shaped guide rail 5c at the rear end portion of the horizontal member 6a. A rectangular hole 6d is formed in the guide roller pivot portion 6c. The guide roller 6e is loosely fitted in the rectangular hole 6d, and the shaft 6f penetrates the guide roller pivot 6c and the guide roller 6e from the rear end surface of the guide roller pivot 6c toward the swing shaft 6b. The guide roller 6e is fixed on the guide roller pivot 6c. The guide roller 6e rolls on the arcuate guide rail 5c of the support 5, and the apparatus body 6 can swing left and right around the swing shaft 6b. It has become way.

  Further, a shaft 8a is projected from the front end portion of the apparatus body 6 in the horizontal direction, and a winding roller 8 is pivotally attached to the shaft 8a.

  Further, a pressing roller advance / retreat cylinder 9 is provided below the winding roller 8 so as to be extendable forward and backward, and the pressing roller 10 is directed to the front end of the piston rod 9a of the pressing roller advance / retreat cylinder 9 in the horizontal direction. It is pivotally supported so that it can rotate around the line.

  Moreover, it is positioned below the pressing roller advance / retreat cylinder 9 and is directed obliquely upward toward the pneumatic raw tire 1, and a monospiral belt cutting means 11 is provided in the apparatus main body 6. Along the longitudinal direction, the head is directed upward obliquely, and the cutter 11b can be advanced and retracted by the cutter advance / retreat cylinder 11a.

  Further, a monospiral belt electromagnetic adsorber 12 oriented in the horizontal direction is provided between the winding roller 8 and the pressing roller advance / retreat cylinder 9 in the apparatus main body 6, and an adsorption surface 12a of the monospiral belt electromagnetic adsorber 12 is provided. The electromagnet 12b can move forward and backward.

  Further, the apparatus main body 6 is provided with a left side around the swing shaft 6b each time the pneumatic raw tire 1 makes one rotation corresponding to the width of the tread peripheral surface 1a of the raw tire 1 and the thickness of the monospiral belt 2. A swinging mechanism (not shown) is provided to turn the horizontal member 6a in the right or left direction, and the winding roller 8 and the pressing roller 10 come into contact with the tread peripheral surface 1a of the pneumatic green tire 1 so that the green tire 1 rotates. When the turning direction of the horizontal member 6a is switched from one side of the tread peripheral surface 1a of the raw tire 1 to the other side and the monospiral belt 2 is positioned on one side or the other side of the tread peripheral surface 1a, The monos capable of stopping the swing mechanism and stopping the rotation of the pneumatic green tire 1 to finish the winding of the mono spiral belt 2 around the tread circumferential surface 1a of the pneumatic green tire 1. Iraru winding control device 13 is provided.

  Since the embodiment shown in FIGS. 1 to 13 is configured as described above, the green tire 1 after the winding process of the monospiral belt 2 around the tread peripheral surface 1a of the green tire 1 is 4 is removed from the raw tire column 4b of the tire 4, and as shown in FIG. 1, the raw tire 1 on which the monospiral belt 2 is not wound is attached to the raw tire column 4b of the base 4, and then wound. The cutting front end 2e of the monospiral belt 2 that the roller advancing / retreating cylinder 7 extends and is wound around the winding roller 8 hangs on the tread peripheral surface 1a of the raw tire 1 with the pressing roller 10 that moves from the rear to the front. It is pressed and adheres to the tread peripheral surface 1a of the raw tire 1.

  When the winding process of the green tire 1 around the tread circumferential surface 1a is started, the winding portion of the monospiral belt 2 wound around the winding roller 8 is extended so that the winding roller advance / retreat cylinder 7 is extended. The cut end portion 2e of the monospiral belt 2 that is in pressure contact with the tread peripheral surface 1a of the green tire 1 and also in contact with the pressing roller 10 is also pressed into contact with the tread peripheral surface 1a of the green tire 1 and adheres to the pressing roller 10. The monospiral belt 2 is pressed against the tread peripheral surface 1a of the raw tire 1, and then the raw tire 1 is rotated in the counterclockwise direction by the raw tire rotation drive mechanism 0. The monospiral belt 2 is brought into pressure contact with the tread circumferential surface 1a and pulled out to the right, but is not shown in the drawing by the monospiral belt tension applying device. Thus, tension is applied to the monospiral belt 2, and the monospiral belt 2 that is easily bent is stretched on the tread peripheral surface 1 a of the raw tire 1 while being stretched straight.

  In conjunction with the counterclockwise rotation of the raw tire 1, the horizontal member 6a is slightly swung to the left or right around the rocking shaft 6b by the rocking mechanism. Winding around the tread circumferential surface 1a of the raw tire 1 in a spiral shape from one side to the other side of the tread circumferential surface 1a or from the other side to the other side along the rotation direction of the raw tire 1.

  As described above, the monospiral belt 2 to which the tension is applied is strongly pressed against the tread circumferential surface 1a of the raw tire 1 by the winding roller 8 and the pressing roller 10. As a result, the monospiral belt 2 is tread circumferential surface 1a of the raw tire 1. It can be firmly adhered to.

  When the raw tire 1 is rotated a required number of times and the monospiral belt 2 is wound around the entire surface of the tread 1a of the raw tire 1 over the entire surface (see FIG. 3). After the rotation of 1 is temporarily stopped, the raw tire 1 is driven to rotate counterclockwise at a low speed, and the winding roller advance / retreat cylinder 7 is shortened little by little in synchronization with this, and the apparatus main body 6 is retracted. The contact portion 2c between the winding portion 2a and the pressing portion 2b is not largely peeled from the tread peripheral surface 1a of the raw tire 1 to the left, and the tread of the raw tire 1 is pressed by the pressing roller 10 as shown in FIG. Since it is pressed against the peripheral surface 1a, the contact rubber 2c can adhere to the tread peripheral surface 1a with the covering rubber of the outer peripheral portion and the raw rubber layer of the tread peripheral surface 1a being in close contact with each other.

  After the green tire 1 is driven at the required number of revolutions and the winding of the monospiral belt 2 around the tread peripheral surface 1a of the green tire 1 is finished, the green tire 1 stops rotating as shown in FIG. Then, as shown in FIG. 7, the monospiral belt cutter 11b moves obliquely forward and is cut by the monospiral belt cutter 11b as shown in FIG. The electromagnet 12b provided on the attracting surface 12a is energized, the cutting tip 2e of the monospiral belt 2 is attracted to the attracting surface 12a by the magnetic force, and the cutting tip 2e is pushed forward, The cut rear end 2d bends backward and is wound around the pressing roller 10 and hangs down.

  When the green tire 1 is further rotated counterclockwise in the state shown in FIG. 8, the pressing roller 10 pressed against the tread peripheral surface 1a of the green tire 1 is rotated clockwise, and the pressing roller 10 The abutting portion 2d wound around and wound down is pressed against the tread circumferential surface 1a of the raw tire 1 by a pressing roller 10 that rotates in the clockwise direction, and as shown in FIG. The winding operation of the monospiral belt 2 around the tread peripheral surface 1a of the tire 1 is completed.

  After this winding operation is completed, as shown in FIG. 10, the pressing roller advance / retreat cylinder 9 is shortened and the pressing roller 10 moves backward, but the winding roller cut by the monospiral belt cutting means 11. When the monospiral belt adsorber 12 is demagnetized, the leading end 2e of the monospiral belt 2 pushed forward from 8 is demagnetized from the state adsorbed by the monospiral belt adsorber 12. And adheres to the pressing roller 10 as shown in FIG.

  As described above, the contact portion between the pressing portion 2b and the winding portion 2a at the end of winding of the monospiral belt 2 around the tread circumferential surface 1a of the raw tire 1 that has stopped rotating. In the state where 2c is wound around the tread peripheral surface 1a of the raw tire 1 by the winding roller 8, the raw tire 1 is driven to rotate counterclockwise in synchronization with the apparatus body 6 retreating little by little. The portion close to the pressing portion 2b of the contact portion 2c is pressed against the tread peripheral surface 1a again by the pressing roller 10 until it is peeled off from the tread peripheral surface 1a of the green tire 1, so that the portion close to the pressing portion 2b is the tread circumference. It can adhere to the surface 1a reliably.

  Further, the central portion of the contact portion 2c between the winding portion 2a and the pressing portion 2b is attached to the tread peripheral surface 1a of the raw tire 1 by the pressing roller 10, so that the raw tire 1 is further counterclockwise thereafter. Even in the case of rotating in the direction, the portion from the central portion of the contact portion 2c to the winding portion 2a is not greatly peeled off from the tread peripheral surface 1a so much from the tread peripheral surface 1a. It can adhere to the surface 1a.

  Since the portion on the supply side of the monospiral belt 2 from the winding portion 2a is not attached to the tread peripheral surface 1a, the pressing portion is pressed from the winding portion 2a as shown in FIGS. The portion reaching the portion 2b is not peeled off from the tread peripheral surface 1a. As a result, even if the tension is not applied by a monospiral belt tension applying device (not shown), the pressing roller 10 applies the tread peripheral surface 1a. It can be pressed and reliably attached.

  Further, since the cutting tip 2e of the monospiral belt 2 is attached to the pressing roller 10, the cutting tip 2e is not bent and held in a substantially straight line. As a result, the tread circumference of the next new green tire 1 is maintained. In the process of winding the monospiral belt 2 around the surface 1a, the cutting tip portion 2e can be reliably wound along the circumferential direction of the raw tire 1.

  As described above, the monospiral belt 2 can be automatically wound around the tread peripheral surface 1a of the raw tire 1 one after another without depending on the work of the worker. The monospiral belt 2 is wound with high reliability from one side to the other side of the tread peripheral surface 1a along the rotation direction, so that a high-quality raw tire can be produced efficiently and safely at low cost.

  In the above embodiment, the monospiral belt is the steel monospiral belt 2, but even if it is a synthetic resin monospiral belt not made of steel, air suction force without magnetism instead of the monospiral belt cutting means 11. The method of the present application can be carried out by using an adsorber having

  In the above-described embodiment, the apparatus main body 6 is provided on the base 4 via the support body 5. However, the support body 5 is excluded and the apparatus main body 6 is wound around the base 4 via the winding roller advance / retreat cylinder 7. 6 may be provided so as to be able to advance and retreat.

  DESCRIPTION OF SYMBOLS 1 ... Raw tire, 1a ... Tread peripheral surface, 2 ... Mono spiral belt, 2a ... Winding part, 2b ... Pressing part, 2c ... Abutting part, 2d ... Cutting end part, 2e ... Cutting tip part, 3 ... Mono Spiral belt winding device, 4 ... base, 5 ... support, 5a ... horizontal member, 5b ... vertical member, 5c ... arc guide rail, 6 ... main body, 6a ... horizontal member, 6b ... swinging shaft, 6c DESCRIPTION OF SYMBOLS: Guide roller pivot part, 7 ... Winding roller advance / retreat cylinder, 7a ... Piston rod, 8 ... Winding roller, 9 ... Pressing roller advance / retreat cylinder, 9a ... Piston rod, 10 ... Pressing roller, 11 ... Mono spiral belt cutting means, 11a: Cutter advance / retreat means, 11b: Cutter, 12 ... Monospiral belt adsorber, 12a ... Adsorption surface, 12b ... Electromagnet, 13 ... Monospiral winding controller.

Claims (7)

A winding roller wound with a monospiral belt fed from a monospiral belt supply source is advanced toward the outer peripheral surface of the tread of the raw tire to bring the monospiral belt into contact with the outer peripheral surface of the tread of the raw tire, and By rotating the raw tire in a state where the front end portion of the monospiral belt wound around the outer circumferential surface of the tread of the raw tire is pressed against the outer circumferential surface of the tread of the raw tire by a pressing roller, the tread of the raw tire When the monospiral belt is wound along the rotational direction of the tread outer peripheral surface of the raw tire from one side to the other side of the outer peripheral surface, and when the winding of the monospiral belt to the raw tire is finished,
The green tire is started after the winding roller starts to move backward, and after the separation start portion that has started to move away from the winding roller at the start of the winding roller reverse movement reaches between the pressing roller and the tread outer peripheral surface of the green tire. To stop the rotation and cut the monospiral belt between the winding roller and the pressing roller,
Thereafter, characterized again by rotating the raw tire in the winding direction, the wrapping on the raw tire mono spiral belt with by the pressing roller between the pressing roller and the mono-spiral belt after cutting end A monospiral belt winding method for raw tires.   After adsorbing the cutting tip of the monospiral belt cut by the monospiral belt cutting means to the adsorber, the monospiral belt cutting tip adsorbed by the adsorber is adhered to the tread of the raw tire, 2. The monospiral belt winding method for a raw tire according to claim 1, wherein the adsorber is separated from a cutting end portion of the monospiral belt. When the monospiral belt is a monospiral belt formed by twisting a plurality of fine steel wires,
Before cutting the monospiral belt between the pressing roller and the winding roller with the monospiral belt cutting means,
A cutting tip of the monospiral belt that is cut by the monospiral belt cutting means and dropped after moving the electromagnetic adsorber instead of the adsorber below the winding roller and the monospiral belt cutting means Part is adsorbed to the electromagnetic adsorber,
When the winding roller to tread surface of the green tire is in contact with close, characterized in that to adhere the cut away end of the mono-spiral belt adsorbed to the electromagnetic absorber on the tread surface of the raw tire The method for winding a monospiral belt of a green tire according to claim 2. A raw tire rotating means for rotating and retracting the raw tire in the winding direction of the monospiral belt, a winding roller for pressing the wound monospiral belt against the outer circumferential surface of the tread of the raw tire,
Winding roller advance / retreat means for moving the winding roller forward or backward toward the green tire;
A monospiral belt wound around the raw tire at a position advanced in the rotation direction of the raw tire from a position where the monospiral belt is pressed against the raw tire by the winding roller, on the outer circumferential surface of the tread of the raw tire. A pressing roller for pressing and crimping;
A pressing roller advancing / retreating means for advancing or retreating the pressing roller toward the raw tire and pressing the pressing roller against the tread outer peripheral surface of the raw tire, or separating the pressing roller from the tread outer peripheral surface of the raw tire;
Monospiral belt cutting means for cutting the monospiral belt between the winding roller and the pressing roller;
A monospiral belt winding control device for controlling the raw tire rotating means, the winding roller advance / retreat means, and the monospiral belt cutting means to wind the monospiral belt around the tread outer peripheral surface of the raw tire; ,
The monospiral belt winding control device includes:
The monospiral belt that presses the front end portion of the monospiral belt wound around the winding roller against the outer circumferential surface of the tread of the green tire by the forward movement of the winding roller advancing / retreating means and is in contact with the pressing roller After the front end of the green tire is pressed against the outer circumferential surface of the tread of the green tire, the winding of the monospiral belt is started by the rotation operation in the winding direction of the green tire rotating means,
The winding roller is moved backward while the green tire is rotated while the monospiral belt is pressed against the outer surface of the tread of the green tire when the first predetermined time elapses before the winding is completed. ,
When the winding roller reaches the retreat limit position, after stopping the rotation of the raw tire rotating means,
After the monospiral belt between the pressing roller pressing the tread outer peripheral surface of the green tire and the retracted winding roller is cut by the monospiral belt cutting means, the green tire is again turned by the green tire rotating means. Rotating and controlling the rear end portion of the monospiral belt not pressed against the outer peripheral surface of the raw tire tread against the outer peripheral surface of the raw tire tread to finish the winding of the outer peripheral surface of the tread of the raw tire A device for winding a monospiral belt of a raw tire.   An adsorber is provided that moves forward or backward toward the green tire between the winding roller and the pressing roller and can be detachably attached to a monospiral belt that hangs down from the winding roller. Item 5. A monospiral belt winding device for a green tire according to Item 4. The monospiral belt is obtained by twisting a plurality of fine steel wires and covering the surface with raw rubber.
6. The apparatus according to claim 5, wherein the adsorber is an electromagnetic adsorber capable of adsorbing and detaching the monospiral belt hanging from the winding roller by electromagnetic force. In the monospiral belt winding device,
An apparatus main body including the winding roller, the pressing roller, and the monospiral belt cutting means is provided on the base so as to be able to move forward and backward
The winding roller advance / retreat means is interposed between the base and the apparatus main body,
A support is interposed between the base and the apparatus main body,
7. The monospiral of a pneumatic tire according to claim 6, wherein the apparatus main body is pivotally supported so as to be swingable to the left and right with respect to a raw tire pivotally supported about the horizontal line on the support body. Belt winding device.

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