JP5028156B2 - Tire configuration cord transfer device and tire configuration code transfer method - Google Patents

Description

  The present invention relates to a tire construction cord transport device and a tire construction cord transport method for transporting a tire construction cord that has been cut at a fixed length.

Conventional methods for manufacturing pneumatic tires include, for example, a process of forming an inner liner, a ply, or the like on a first drum to form a cylindrical band molded body, and a belt, a tread, or the like on a second drum. The step of forming an annular laminate, and with the band molded body inserted inside the laminate, air is supplied to the inside of the band molded body to expand the diameter from a cylindrical shape to a troidal shape. A method of forming a green tire by bringing the surface and the inner peripheral surface of the laminate into close contact with each other and folding the ply around the bead portion radially outward, and a step of vulcanizing the green tire It has been known.
However, in this method, the arrangement of a plurality of ply cords embedded in the ply may be disturbed when the band molded body is expanded in a troidal shape or when the ply is folded around the bead portion. .
Therefore, as means for solving such a problem, for example, as shown in Patent Document 1 below, an inner liner, a ply cord, or the like is directly applied to the outer surface of a rigid core having an outer surface shape corresponding to the inner surface shape of a product tire. A method is proposed in which a green tire is formed by pasting the tire constituent member, and then subjecting the green tire to a vulcanization step together with a rigid core.
JP 2006-142669 A

 However, conventionally, when a tire construction cord such as a ply cord is attached to the outer surface of a rigid core using the device described in Patent Document 1, a tire construction cord that has been cut at a fixed length is manually attached to this device. Had been fed through. For this reason, there has been a significant impediment to the automation of the above-described process using the apparatus.

  The present invention has been made in consideration of such circumstances, and a tire construction cord transport device and a tire that can reliably transport a tire construction cord that has been cut at a fixed length without a complicated structure. It is an object of the present invention to provide a method for transferring a configuration code.

In order to solve the above-described problems and achieve such an object, the tire construction cord transport device of the present invention is a tire construction cord transport device that transports a tire construction cord that has been cut at a fixed length. In addition, the plurality of screw shafts are set in a horizontal posture with their respective axes parallel to each other, and the screw valleys of the screw shafts are virtually extended across the screw shafts in the top view of the transfer device. In a state where it is positioned on a straight line, it is provided so as to be rotatable around each axis, and the tire constituting cord is straddled over the plurality of screw shafts in a plurality of screw valley portions positioned on the virtual straight line. The tire constituting cord is transferred by rotating the screw shafts around the respective axis lines.
The tire construction cord transport method of the present invention is a tire construction cord transport method for transporting a tire construction cord that has been cut at a fixed length, using the tire construction cord transport device of the present invention. The tire constituting cord is transported.

In the present invention, in a state where the constant length cut tire constituting cords are arranged across the plurality of screw shafts in the plurality of screw valley portions located on the virtual straight line, the screw shafts are respectively arranged. Since the tire constituting cord is transferred by being rotated around the axis, the tire constituting cord can be reliably transferred without using a complicated structure.
That is, when these screw shafts are rotated around their respective axes in the state where the tire constituting cords are arranged as described above in the plurality of screw valley portions located on the virtual straight line, the tire constituting cords are By sliding on the plurality of thread valley portions, the tire constituting cord can be transferred in a direction perpendicular to the virtual straight line in the horizontal direction.

Here, the plurality of screw shafts are provided so as to be intermittently rotated when they rotate once in synchronization with each axis, and when the rotation of these screw shafts is stopped, a new tire constituting cord is provided. You may be set as the structure arrange | positioned in the some screw trough part located on the said virtual straight line.
In this case, a plurality of screw shafts are provided so as to be able to rotate intermittently, and when the rotation of these screw shafts is stopped, new tire construction cords are arranged in the plurality of screw valley portions located on the virtual straight line. Thus, the plurality of tire constituting cords can be transported in a state of being aligned in parallel with a space in the direction perpendicular to the imaginary straight line in the horizontal direction.

Further, among the plurality of screw shafts, when viewed from the top of the transfer device, the front of the front end screw shaft positioned at the front end in the rotation direction of these screw shafts is positioned on the virtual straight line in front of the rotation direction. End portions of the tire constituting cords arranged at a plurality of thread valley portions to be brought into contact with each other, and guide means for restricting the forward movement of the tire constituting cords in the rotational direction is provided. Good.
In this case, since the guide means is provided, when the screw shafts are rotated around the respective axes in a state where the tire constituting cords are arranged in the plurality of thread valley portions located on the virtual straight line, In addition, it is possible to prevent the tire constituting cord from being moved forward in the rotational direction without slipping on the plurality of thread valley portions, and the above-described effects can be reliably achieved. In addition, it is possible to position the tire constituting cord in the direction along the virtual straight line with respect to the transfer device with high accuracy.
Further, for example, as described later, when the tire constituting cord is arranged to be inserted into the plurality of screw valley portions located on the virtual straight line from the screw valley portion of the rear end screw shaft, for example, detection means or Even without providing a control means or the like, the end of the tire constituting cord is brought into contact with the guide means so that the tire constituting cord can be easily positioned in the direction along the virtual straight line with respect to the transfer device. It becomes possible to carry out with high precision and the complication and cost increase of the said transfer apparatus can be prevented.

Further, the reel-wound tire constituting cord is fed out of the plurality of screw shafts toward the rear end screw shaft located at the rear end in the rotation direction of the screw shafts in the top view of the transfer device. A feeding device arranged to enter the plurality of screw valley portions located on the virtual straight line from the screw valley portion of the rear end screw shaft, and the payout device at the rear of the rear end screw shaft in the rotational direction. There may be provided a cutting device for cutting the tire constituting cords arranged at a plurality of screw valley portions located on the virtual straight line from the device at a constant length.
In this case, the feeding device and the cutting device are provided, and the reel-wound tire constituting cord is cut at a constant length in a state where the cord is arranged in a plurality of screw valley portions located on the virtual straight line. After the tire constituting cord is cut by a fixed length, the tire constituting cord can be immediately transferred, and the cutting step and the transferring step of the tire constituting cord can be performed with high efficiency.
For example, when the guide means is provided, the reel-wound tire constituting cord is caused to enter the plurality of screw valley portions located on the virtual straight line from the screw valley portion of the rear end screw shaft. Since the position of the cord in the direction along the imaginary straight line with respect to the transfer device is determined by the tip of the cord coming into contact with the guide means when being arranged, Fixed length cut accuracy can be improved.

  According to this invention, it is possible to reliably transfer the tire constituting cord that has been cut at a constant length without using a complicated structure.

Hereinafter, an embodiment of a tire construction cord transfer device according to the present invention will be described with reference to FIGS. 1 and 2. In the transfer device 10, a plurality of screw shafts 11, 12, 13, and 14 are placed in a horizontal posture with the axes O1, O2, O3, and O4 being parallel to each other, and around the axes O1, O2, O3, and O4. It is provided so as to be rotatable. In the present embodiment, the screw shafts 11, 12, 13, and 14 are configured to rotate in synchronism with the same rotational speed in the same direction around the respective axes O1, O2, O3, and O4.
Examples of the tire construction cord W transferred by the transfer device 10 include a steel cord. Further, the thread portions formed on the screw shafts 11, 12, 13, and 14 have the same dimensions such as lead angle, pitch interval, outer diameter, and inner diameter.

 These screw shafts 11, 12, 13, and 14 are screw threads 11 a, 12 a, 13 a, and 14 a of the screw shafts 11, 12, 13, and 14, respectively. , The positions around the respective axes O1, O2, O3, O4 are aligned so as to be positioned on an imaginary straight line L extending over the screw shafts 11, 12, 13, 14, and While maintaining the state, it rotates as described above. Therefore, as the screw shafts 11, 12, 13, and 14 rotate, the virtual straight line L moves in a direction (hereinafter referred to as a transfer direction) A orthogonal to the virtual straight line L in the horizontal direction. Yes. Note that a plurality of the virtual straight lines L are located in the transfer direction A at intervals equivalent to the pitches of the thread portions formed on the screw shafts 11, 12, 13, and 14.

 As described above, the tire constituting cord W that has been cut to a fixed length is placed on the plurality of screw shafts 11, 12, 13, 14 on the plurality of thread valley portions 11 a, 12 a, 13 a, 14 a located on the virtual straight line L. By rotating these screw shafts 11, 12, 13, 14 around the respective axes O 1, O 2, O 3, O 4 as described above in a state where they are arranged in a straddling manner, this tire constituting cord W is It is transferred in the transfer direction A.

 Further, in the present embodiment, the plurality of screw shafts 11, 12, 13, and 14 are stopped when they are rotated once in synchronism around the respective axes O1, O2, O3, and O4, that is, intermittent rotation is possible. When the rotation of the screw shafts 11, 12, 13, and 14 is stopped, a plurality of thread valley portions 11a, 12a, 13a, and a new tire constituting cord W are positioned on the virtual straight line L. A control unit (not shown) arranged at 14a is provided.

Further, in the present embodiment, among the plurality of screw shafts 11, 12, 13, and 14, the screw shafts 11, 12, 13, and 14 are rotated in a top view of the transfer device 10 as shown in FIG. A tire constituting cord disposed in a plurality of screw valley portions 11a, 12a, 13a, 14a positioned on a virtual straight line L in front of the rotation direction R from the front end screw shaft 14 positioned at the front end in the direction R. A guide means 15 is provided for restricting the forward movement of the tire constituting cord W in the rotational direction R with the end portion of W being brought into contact therewith.
In the illustrated example, the guide means 15 is a plate-like body whose front and back surfaces extend along the transfer direction A. In addition, the guide means 15 has an overall length from the upstream end in the transfer direction A, that is, from the position facing the feeding device 17 in the direction along the virtual straight line L to the downstream end in the transfer direction A. It is extended over.

  Further, in the present embodiment, the reel-wound tire constituting cord W is a top view of the transfer device 10 as shown in FIG. 1 among the plurality of screw shafts 11, 12, 13, 14. The screw shafts 11, 12 a, 13 a, 14 a that are extended toward the rear end screw shaft 11 located at the rear end in the rotational direction R of the screw shafts 11, 12, 13, 14 and are located on the virtual straight line L. Further, a feeding device 17 is provided which is arranged to enter from the rear end side of the rotation direction R, that is, from the thread valley portion 11a of the rear end screw shaft 11. That is, in the illustrated example, the direction in which the tire constituting cord W is fed from the feeding device 17 toward the plurality of screw shafts 11, 12, 13, and 14 coincides with the rotational direction R.

Further, a tire constituting cord W disposed in a plurality of thread valley portions 11a, 12a, 13a, 14a located on the virtual straight line L from the feeding device 17 behind the rear end screw shaft 11 in the rotational direction R. Is provided with a cutting device 16 that cuts a fixed length. As shown in FIG. 2, the cutting device 16 has a pair of support plates 16a facing the tire constituting cord W fed from the feed device 17 from both sides in the vertical direction, and a surface of one support plate 16a. And a blade portion 16b provided so as to be able to advance and retreat with respect to the other support plate 16a.
As a result, the tire is disposed in the plurality of screw valley portions 11a, 12a, 13a, and 14a that pass between the pair of support plates 16a and are positioned on the virtual straight line L, and the tip of which is in contact with the guide means 15 The configuration cord W can be cut by the blade portion 16b.

Next, a method of transferring the tire constituting cord W by the transfer device 10 configured as described above will be described.
First, the tire constituting cord W wound around the reel from the feeding device 17 is fed toward the rear end screw shaft 11, and a plurality of virtual straight lines L on the upstream end in the transfer direction A among the plurality of virtual straight lines L are arranged. The screw valley portions 11a, 12a, 13a, and 14a are inserted from the screw valley portion 11a of the rear end screw shaft 11 and arranged. At this time, the tire constituting cord W is passed between the pair of support plates 16a of the cutting device 16 and is moved toward the front end screw shaft 14 along the virtual straight line L until the front end thereof abuts against the guide means 15. Progress towards.

Next, the blade portion 16b of the cutting device 16 is moved forward toward the tire constituting cord W located between the pair of support plates 16a, and the cord W is cut at a constant length. Then, the plurality of screw shafts 11, 12, 13, and 14 are rotated once around the respective axes O1, O2, O3, and O4 in synchronism as described above, and the tire constituting cord W is directed in the transfer direction A. The screw shaft 11, 12, 13, 14 is transferred by the pitch interval of the screws.
Thereafter, by repeating the above operation, the plurality of tire constituting cords W are transferred in a state where they are aligned in parallel in the direction perpendicular to the virtual straight line L in the horizontal direction.
Here, in the process of transferring the tire constituting cord W, the tip is always kept in contact with the guide means 15.

 As described above, according to the tire configuration cord transfer device and the tire configuration code transfer method according to the present embodiment, the plurality of thread valley portions 11a, 12a, 13a, and 14a positioned on the virtual straight line L are provided. In the state where the cord W for tire construction that has been cut at a fixed length is arranged across the plurality of screw shafts 11, 12, 13, and 14, these screw shafts 11, 12, 13, and 14 are connected to the respective axes O1. , O2, O3, and O4 are rotated to transfer the tire constituting cord W, so that the tire constituting cord W can be reliably transferred without a complicated structure.

 That is, in the state where the tire constituting cord W is arranged as described above in the plurality of screw valley portions 11a, 12a, 13a, 14a located on the virtual straight line L, the screw shafts 11, 12, 13, 14 are connected. When the tire constituting cord W is rotated around the respective axes O1, O2, O3, and O4, the tire constituting cord W is slid on the plurality of thread valley portions 11a, 12a, 13a, and 14a, thereby the tire constituting cord W is It is possible to transfer in the transfer direction A.

  In the present embodiment, the plurality of screw shafts 11, 12, 13, and 14 are provided so as to be intermittently rotatable, and when the rotation of these screw shafts 11, 12, 13, and 14 is stopped, a new tire configuration is used. Since the cord W is arranged in the plurality of thread valley portions 11a, 12a, 13a, 14a located on the virtual straight line L, the plurality of tire constituting cords W are spaced apart from each other in the transfer direction A. It is possible to transfer the material in a state of being opened and aligned in parallel.

 Further, in the present embodiment, since the guide means 15 is provided, in a state where the tire constituting cord W is disposed in the plurality of screw valley portions 11a, 12a, 13a, 14a located on the virtual straight line L, these are provided. When the screw shafts 11, 12, 13, 14 are rotated around the respective axes O 1, O 2, O 3, O 4, the tire constituting cord W is placed on the plurality of thread valley portions 11 a, 12 a, 13 a, 14 a. It is possible to prevent the forward movement in the rotational direction R without slipping, the above-mentioned operational effects can be reliably achieved, and the tire construction cord W can be applied to the transfer device 10. Positioning in the direction along the virtual straight line L can be performed with high accuracy.

 Further, since the guide means 15 is provided, the tire constituting cord W is moved to the plurality of thread valley portions 11a, 12a, 13a, 14a located on the virtual straight line L by the feeding device 17 as in the present embodiment. The end of the tire constituting cord W is brought into contact with the guide means 15 without providing, for example, a detection means or a control means when the rear end screw shaft 11 is inserted from the thread valley portion 11a. By doing so, it becomes possible to easily and highly accurately position the tire constituting cord W in the direction along the virtual straight line L with respect to the transfer device 10, and the transfer device 10 becomes complicated and expensive. Can be prevented.

 Further, in this embodiment, the feeding device 17 and the cutting device 16 are provided, and the reel-wound tire constituting cord W is arranged on the plurality of thread valley portions 11a, 12a, 13a, 14a located on the virtual straight line L. Since the fixed length cut is performed in the arranged state, the tire constituting cord W can be transferred immediately after the tire constituting cord W is cut by the cutting device 16, and the tire constituting cord W is cut. In addition, the transfer process can be performed with high efficiency.

 Furthermore, in the present embodiment, the reel-wound tire constituting cord W is threaded to the plurality of thread valley portions 11a, 12a, 13a, 14a located on the virtual straight line L, and the thread valley portion 11a of the rear end screw shaft 11. Since the tip end of the cord W comes into contact with the guide means 15 when the cord W is placed and moved from the position, the position of the cord W in the direction along the virtual straight line L with respect to the transfer device 10 is determined. In a fixed state, the cutting device 16 can cut the tire constituting cord W at a fixed length, and the fixed length cutting accuracy of the tire constituting cord W can be improved.

The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
For example, in the above-described embodiment, the plurality of screw shafts 11, 12, 13, and 14 are provided so as to be intermittently rotatable around the respective axes O1, O2, O3, and O4. .
Moreover, in the said embodiment, although the guide means 15, the feeding apparatus 17, and the cutting device 16 were provided, these do not need to be provided.
Furthermore, each structure of the guide means 15 and the cutting | disconnection means 16 is not restricted to the said embodiment, You may change suitably.

In the embodiment, the tire constituting cord W is made to enter the plurality of screw valley portions 11 a, 12 a, 13 a, and 14 a located on the virtual straight line L from the screw valley portion 11 a of the rear end screw shaft 11. However, instead of this, for example, it may be arranged from above in the vertical direction.
Further, a stranded wire machine may be provided between the feeding device 17 and the cutting device 16, and the stranded wire may be transferred by the transfer device 10.
Moreover, in the said embodiment, although the steel cord was shown as the cord W for tire structure, the material which forms this cord W is not specifically limited.
Further, in the above embodiment, when the tire constituting cord W is cut at a constant length by the cutting device 16, the tip of the cord W is brought into contact with the guide means 15. The tip of the tire constituting cord W may not be brought into contact with the guide means 15 but the tip of the tire constituting cord W may be brought into contact with the guide means 15 at the time of transfer after the fixed length cut.

  It is possible to reliably transfer the tire constituting cord that has been cut at a constant length without using a complicated structure.

It is a principal part top view of the transfer device of the cord for tire composition shown as one embodiment concerning the present invention. FIG. 2 is an enlarged schematic view of a cutting device of the tire constituting cord transfer device shown in FIG. 1.

Explanation of symbols

10 Tire Conveying Cord Transfer Device 11 Rear End Screw Shaft (Screw Shaft)
11, 12, 13, 14 Screw shaft 11a, 12a, 13a, 14a Screw trough 14 Front end screw shaft (screw shaft)
15 Guide means 16 Cutting device 17 Feeding device L Virtual straight line O1, O2, O3, O4 Axis line R Rotation direction W Tire construction cord

Claims (5)

A tire construction cord transfer device for transferring a tire construction cord cut at a fixed length,
A plurality of screw shafts are placed horizontally with their axes parallel to each other, and the screw valleys of each screw shaft are on a virtual straight line extending over these screw shafts when viewed from above. In a state where it is positioned at, it can be rotated around each axis,
By arranging the tire constituting cords over the plurality of screw shafts in a plurality of screw valley portions located on the virtual straight line, and rotating these screw shafts around each axis, A tire construction cord transport device characterized in that the tire construction cord is transported. A tire transfer cord transfer device according to claim 1,
The plurality of screw shafts are provided such that they can be intermittently rotated when they rotate once in synchronism with each axis, and when the rotation of these screw shafts stops, a new tire constituting code is added to the virtual straight line. A tire-constituting cord transfer apparatus, characterized in that it is arranged in a plurality of screw valleys located above. A tire transfer cord transfer device according to claim 1 or 2,
Among the plurality of screw shafts, the plurality of screw shafts positioned on the imaginary straight line in front of the front end screw shaft positioned at the front end in the rotation direction of the screw shafts in the top view of the transfer device. The end portion of the tire constituting cord disposed in the thread valley portion of the tire is brought into contact with each other, and guide means for restricting the forward movement of the tire constituting cord in the rotational direction is provided. A tire-conveying cord transfer device. It is a transfer device of the cord for tire composition according to any one of claims 1 to 3,
The reel-wound tire configuration cord is fed out of the plurality of screw shafts toward the rear end screw shaft located at the rear end in the rotational direction of the screw shafts in a top view of the transfer device, and A feeding device that is arranged to enter a plurality of screw valley portions located on a virtual straight line from the screw valley portion of the rear end screw shaft, and
A cutting device that cuts the tire constituting cords arranged at a plurality of screw valleys located on the virtual straight line from the feeding device at a constant length behind the rear end screw shaft in the rotational direction is provided. An apparatus for transferring a cord for constituting a tire. A method of transferring a tire constituting cord for transferring a tire constituting cord cut at a fixed length,
A method for transferring a tire constituting cord, comprising: transferring the tire constituting cord using the tire constituting cord transferring device according to any one of claims 1 to 4.

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