JP2004249461A - Tire reinforcing material manufacturing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tire reinforcing material manufacturing apparatus used together with a rotary mold 1 and constituted so as to attach a cord 4, which is continuously supplied from a supply device corresponding to a requirement, to the rotary mold along a desired track to successively form a tire reinforcing material. <P>SOLUTION: The tire reinforcing material manufacturing apparatus has a member 3 for drawing the locus of alternate motion between two reversal points to attach the cord 4 on the surface of the rotary mold 1 and a press device for pressing the cord to the mold at the end part of the track acting in the vicinities of the respective reversal points in synchronous to the attaching member 3. This manufacturing apparatus has at least one movable guide 5 arranged in the space between the mold and the locus drawn by the attaching member in opposed relation to the mold, a drive means for moving the movable guide 5 in a peripheral direction and a motor drive means for synchronously driving the drive means of the attaching member 3, the press device 2 and the movable guide 5. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method for manufacturing a tire, and more particularly to a method for attaching a cord to manufacture a tire reinforcement.
In particular, the present invention relates to a means for producing a reinforcing material at the time of producing a tire on a mold having the same shape or a shape close to the internal cavity of the tire, that is, a substantially annular mold supporting a tire material.
[0002]
[Prior art]
Methods and devices for producing tire reinforcement at the same time as the tire is being assembled are already known. That is, it is already known that, instead of using an intermediate product such as a reinforcing ply, a single cord is drawn from a reel and a reinforcing material is manufactured on the spot at the time of tire manufacturing.
[Patent Document 1] European Patent No. 0,580,055
EP 0,580,055 describes a method for producing a carcass reinforcement on a hard core mold whose outer surface substantially corresponds to the mold of the internal cavity of the finished tire. In the apparatus disclosed in this patent, a cord serving as a carcass reinforcing material passes through a guide tube fixed to a chain with a pulley installed so as to form a "C" shape surrounding a core, and a cord serving as an arch is formed on a hard core. Placed in That is, the guide tube is moved back and forth around the core mold so that one cord portion is alternately arranged in each of the outward and return passes, and the ends of each cord portion are hardened using an appropriate pressing device. It is pressed and fixed to raw rubber applied in advance on a core mold.
[0003]
In order to arrange each arch on the side wall in the radial direction as much as possible by smoothly rotating around the hard core mold, the above method of shifting the pulley supporting the chain in the circumferential direction with respect to the radial reference plane is Proposed. However, only one combination of the core speed and the chain speed can be reliably mounted in the radial direction even if the disc is shifted in this manner. That is, in one case, a plurality of radial arch portions can be attached to the entire circumference of the tire in this state, and if it deviates from the reference shape, the adjustment of the track becomes incomplete. In this case, you need to be patient or adjust the position of each pulley.
[0004]
[Patent Document 2] European Patent No. 0,962,304
EP 0,962,304 also describes an apparatus for producing a carcass reinforcing agent on a hard core that approximately corresponds to the internal cavity shape of the finished tire. The drive system of this device has an arm that reciprocates about a rotation axis that passes through approximately the center of the radial cross section of the ring formed by the core, and the cord that comes out of the end of this arm is placed on a rigid core. It is arranged in an arch shape. EP 0,962,304 proposes passing a cord between two cord guides arranged opposite the side wall in order to control the mounting trajectory of the arch part in the side wall. . EP 0,962,304 further proposes a reciprocating rotary movement in a core form. However, taking into account the inertia of the core, this is actually difficult and becomes even more problematic at high speeds.
[0005]
[Problems to be solved by the invention]
It is an object of the present invention to operate in the general manner described in the above-mentioned EP 0,580,055, but without impairing the operation of the cord mounting member at high speed, and to place the cord on the core form. An object of the present invention is to provide a device capable of controlling the mounting accuracy.
It is another object of the present invention that the cord can be properly displaced so that it is mounted on the core serving as a tire support without adversely affecting the movement of the mounting member drive system and the core. The purpose is to precisely control the code trajectory.
[0006]
[Means for Solving the Problems]
The present invention provides a member for mounting the cord on the surface of the mold, which describes the trajectory of the alternating movement between the two inversion points, and the code at the end of the track acting in synchronism with this mounting member near each inversion point. And a pressing device for pressing on the mold. The cord portion is supplied along a desired track on a mold that rotates a cord continuously supplied from a supply device on demand, and a tire reinforcing material is sequentially produced. Used in a tire reinforcing material manufacturing apparatus, which is used together with a rotating mold,
(A) at least one movable guide disposed opposite to the mold in a space between the mold and the locus drawn by the mounting member;
(B) driving means for moving the movable guide in the circumferential direction;
(C) motor driving means for driving the driving means of the mounting member, the pressing device and the movable guide synchronously;
An apparatus characterized by having:
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Since the present invention supplements the method described in the above-mentioned EP 0,580,055, reference is made to the contents of this EP.
The present invention provides a drive system as described in the above patent or the following:
[Patent Document 3] European Patent No. 1,122,057,
[Patent Document 4] European Patent 1,122,055,
[Patent Document 5] French Patent No. 02/01747
[Patent Document 6] French Patent No. 02/10748
Provide, but are not limited to, devices that can be used with the drive system described in (1).
In the drawings herein, the outlet orifice of the cord or the guide tube through which the cord is inserted is generally indicated by a circle, but the outlet orifice and the guide tube are not part of the present invention, and the driving method thereof will not be described. In the following, this guide tube, outlet orifice or any equivalent thereof will be referred to as "mounting member". The mounting member is driven by a drive system that "traces" along the tire manufacturing core.
[0008]
Before describing the novel measures of the present invention in detail, it will be helpful to recall some points. The term "cord" has the same general meaning as in EP 0,580,055, including monofilaments, multifilaments, aggregates such as cables or twisted yarns, of any type of material. . It will be appreciated that this "cord" may or may not be coated with rubber. The term "cord portion" refers to a portion of the cord of the reinforcement that extends from one point to another. The term "trajectory" means the trajectory formed by the cord after it has been mounted on a core. The arrangement of all cords around the entire circumference of the core forms the actual reinforcing material. In the case of producing a carcass, for example a radial carcass, the cord portion can be an arch portion extending from one bead to the other bead. Generally, the cord portion can be part of a tread reinforcement or any other type of reinforcement. The cord portion or the arch portion may be cut and separated from a single cord at the time of the attaching operation, or may be a final reinforcing member which is all connected via, for example, a loop.
[0009]
In the present invention, basically, the reinforcing cords are continuously arranged in a shape as close as possible to the shape of the finished product. The cord is supplied on demand from a suitable supply, for example a reel of cord. If necessary, a device for controlling the tension of the cord drawn from the reel is provided. The device for producing reinforcement from a single cord of the device of the present invention is used in conjunction with a mold for producing tires (hard core or bladder). It does not matter whether the cord is cut or not between the front and back two times, and it is no problem to rotate the mold a plurality of times to produce one complete stiffener.
When the term "radial direction, axial direction, circumferential direction" is used to indicate position, direction, direction or radius, the core form on which the tire is made or the tire itself is the reference point, and the reference geometric axis Is the axis of rotation of the mold. Center plane π _M Is a plane perpendicular to the axis of rotation of, for example, the mold shown in FIG. Center plane π _R Is a plane including the rotation axis of the type shown in FIG. 5, for example. The term "portion" means the trajectory of the cord between the location where the cord is released from the mounting member and the location where the cord joins the mold surface.
The features of the present invention will be better understood from the following description of embodiments with reference to the accompanying drawings.
[0010]
【Example】
FIG. 1 shows, as background, a form 1 as a hard detachable core mold 1 that defines the internal cavity shape of the tire. In addition, it is not limited to this type. The core mold 1 is covered with a rubber layer 10. As shown in FIG. 2, the rubber layer 10 comprises a sealing rubber layer based on, for example, butyl rubber, and a rubber layer suitable for covering a reinforcing cord generally forming a carcass of a tire. The arch portion 40 of the cord 4 arranged on the core mold 1 is attached by the adhesive effect of the rubber layer 10 covering the core mold 1 and is held as it is. It can be seen that the core mold 1 is rotated by any device not shown.
[0011]
The member to which the cord 4 is attached is a drive system (see FIGS. 2, 3, 4, 5, 9, and 10) for the attaching member 3 of the reinforcing cord 4 which is disposed on each side surface of the core mold 1. And a pressing device 2 (conceptually shown in FIGS. 2, 3a to 3e, 5, 9, and 10).
[0012]
As already mentioned, the mounting member 3 can be, for example, a string hole or an orifice of a reciprocating arm. The system for driving the mounting member 3 is, for example, a chain system as described in European Patent No. 0,580,055, or a system having a reciprocating arm as described in the above patent. The user moves around the core mold 1. These systems making up the mounting member 3 are driven to move on a surface called the "motion surface". The mounting member 3 needs to be structured so as not to damage the cord 4.
[0013]
The pressing device 2 must be arranged to perform the function described in the above-mentioned European Patent Application 0,580,055. In this patent, the pressing device comprises a fork member and a hammer that can move between a retracted position (a position away from the core 1) and an advanced position (a position in contact with the core 1). By using this pressing device, a loop can be formed, and the loop can be mounted on the core mold 1.
[0014]
Hereinafter, the guide member of the present invention will be described with reference to FIG.
For the sake of clarity, FIG. 1 does not show the member for attaching the cord to the core mold and the pressing device acting in the tire bead region.
The guide member of the present invention comprises a movable guide 5. This guide member preferably further has a fixed guide 6 as an optional member. It should be noted that the use of this fixed guide 6 is not essential, but only preferred. This will be described in detail below.
[0015]
The movable guide 5 is rigidly connected to a U-shaped retaining hook 50 having unequal branch lengths. The longer branch of the retaining hook 50 is rigidly connected to a movable carriage 54, which is mounted on a fixed rail 53. The fixed rail 53 has two holes 530.
[0016]
As can be seen from FIG. 2 or FIG. 6, the fixed rail 53 is attached to the frame 7 by two screws (not shown) passing through the hole 530, and the movable carriage 54 slides on the fixed rail 53. A support 540 is attached to one end of the fixed rail 53. This support 540 projects through a slot 531 formed in the longer of the two branches of the retaining hook 50. The support 540 has a screw hole, and the adjusting screw 58 having the head 580 is attached to the screw hole. The head 580 of the adjusting screw 58 emerges from the retaining hook of the movable guide 5 and forms a stop which limits the movement of the movable carriage 54 and thus of the movable guide 5. A return spring 55 is inserted between the support 540 and the retaining hook 50. This return spring 55 always pushes back the movable guide 5 (upward in FIG. 1), and presses the retaining hook 50 against the head 580 of the adjusting screw 58.
[0017]
A rotatable roller 56 is attached to the end of the retaining hook 50. This roller 56 cooperates with a cam 57 mounted on the shaft. The rotation axis 57R of the cam 57 is shown in FIG. 1 and FIG. It can be seen that the axis of rotation 57R moves synchronously with the drive system of the mounting member 3. The cam 57 has a high track 57H and a low track 57B. When the roller 56 travels on the low track 57B, the retaining hook 50 is pushed back downward, compressing the return spring 55, the movable guide 5 takes a low position, and retreats behind the fixed guide 6. When the roller 56 comes on the high track 57H, the retaining hook 50 is pushed upward by the action of the return spring 55. Since this stroke is limited by the position of the adjusting screw 58, the roller 56 does not necessarily travel on the high track 57H. Some play can be provided between the roller 56 and the high track 57H. The movable guide 5 is positioned by the adjusting screw 58. This system of cams and rollers that follow along the cross-section of the cams is only one of many ways to control the movement of the movable guide 5, and provides many other mechanical or electrical controls. It is also conceivable to use.
[0018]
The fixed guide 6 has a retaining hook 60. The retaining hook 60 has a slot 600 formed therein. As can be seen from FIG. 6, the retaining hook 60 is attached to the frame 7 by a screw 63 passing through the slot 600 shown in FIG. The slot 600 is elongated to allow the position of the fixed guide 6 to be adjusted.
[0019]
INDUSTRIAL APPLICATION This invention is utilized for manufacture of a radial carcass. Accordingly, the present invention is to anchor the arch portion to each bead of the tire and to attach it as accurately as possible to the sidewall of the tire. The movable guide 5 has a curved blade 52 which is basically curved so as to conform to the profile of the side surface of the core 1 (in the embodiment shown, the core 1 is removed from the tire after vulcanization of the tire and removed. Is a rigid core of aluminum segmented into The curved blade 52 has an edge 51 for guiding the cord in contact. The movable guide 5 is disposed between the trajectory of the mounting member 3 and the core 1. The movable guide 5 is installed at one of the reversal points of the mounting member 3 and at least a part of the path of the mounting member 3.
[0020]
The same applies to the fixed guide 6. The fixed guide 6 also has a curved blade 62 basically parallel to the curved blade 52. The curved blade 62 has an edge 61 for contacting and guiding the cord. The fixed guide 6 is disposed between the trajectory of the mounting member 3 and the core mold 1. The fixing guide 6 is installed at one of the reversal points of the mounting member 3 and at least a part of the path of the mounting member 3.
In practice, the movable guide and the fixed guide are arranged between the track of the mounting member 3 and the track drawn by the cord 4 on the surface of the core 1 after mounting.
[0021]
From the figure, it can be understood that the fixed guide 6 is closer to the core mold 1 than the movable guide 5. The structure of the fixed guide is optional. The relative positional relationship between the movable guide 5 and the fixed guide 6 with respect to the core mold 1 can be reversed. In the case of a shape for manufacturing a bus tire, the fixed guide is, for example, about 2 to 5 mm from the free surface of the core 1 to which the cord 4 is attached. It is about 5 to 10 mm from the free surface of the core 1 to be attached. It should be noted that at least 1 mm of play is provided between the movable guide and the fixed guide, but these examples are merely illustrative.
[0022]
[FIG. 1], [FIG. 2], [FIG. 3a] to [FIG. 3e], [FIG. 4], [FIG. 5] and [FIG. 9] show the bead and tread band area lateral ends on one side of the tire. FIG. 2 shows a movable guide and a fixed guide combined with one type for guiding a cord between the movable guide and the fixed guide. The contact edge 51 of the movable guide has a segment included in one plane (this feature is an example and not a limitation of the present invention), and the side closer to the shoulder of the tire gradually increases from this plane. It has a distal end 510. Similarly, the contact edge 61 of the fixed guide has a segment included in one plane, and the end near the shoulder of the tire has an end 610 that gradually moves away from this plane.
[0023]
In addition, the contact edge 51 of the movable guide has a segment included in one plane, and the end near the bead of the tire has an end 511 that gradually moves away from this plane. Similarly, the contact edge 61 of the fixed guide has a segment included in one plane, and the end near the bead of the tire has an end 611 that gradually moves away from this plane.
[0024]
Hereinafter, a method of using the present invention will be described.
[FIG. 3a] to [FIG. 3e] show a part of the movable guide 5, and the core 1 in the background is driven to rotate in the direction indicated by the downward arrow on the left side of each figure. FIG. 3a shows a state in which the mounting member 3 has reached the reversal point. The pressing device 2 presses the cord in a core shape downstream of the mounting member 3. At least a part of the cord portion 40 </ b> A under the action of the pressing device 2 is adhered to the covering material of the rubber layer 10 covering the core 1. After the pressing device 2 has been activated, the mounting member 3 moves in the direction of the horizontal arrow shown next to the mounting member 3 in FIG. 3a.
As can be seen from the series of FIGS. 3a to 3e, the movable guide 5 separates the cord from the position where the cord naturally takes between the pressing device 2 and the mounting member 3 when no movable guide is present. . As a result, adjacent code portions on both sides of the loop formed by the bead region 41 are sufficiently separated from each other. In FIG. 3e, it can be seen that the cord portion 40B adheres to the core mold 1 after being sufficiently separated from the cord portion 40A.
[0025]
[FIG. 4] and [FIG. 5] show the state of attaching the cord to the core mold 1 more generally. As can be seen from FIG. 4, the core mold 1 rotates in the direction of the arrow. In the figure, the positions of the movable guide 5 and the fixed guide 6 are shown, and the mounting member 3 and the cord portion 40A downstream thereof are also shown. The cord 4 comes from a cord supply (not shown) upstream of the mounting member 3. The cord portion 40A is in contact with the fixed guide 6. Preferably, the arch portion of the radial carcass of the tire is located in a radial plane. Hereinafter, this radial plane is referred to as a reference plane π. _R Call it. The mounting member 3 draws a locus in one plane by its drive system. During this movement, the core 1 rotates in the above direction. Therefore, the contact edge 61 of the fixed guide 6 is _R Inclined to. Considering that the core mold 1 rotates while the mounting member 3 is moving, and that the contact point between the cord 4 and the fixed guide 6 moves along the edge 61, the cord portion 40A is finally formed. It can be seen that the radiators are mounted radially (more generally along the desired track) with respect to the mandrel 1.
[0026]
In FIG. 4 the mounting member 3 has come to the end of the reciprocating movement along the core 1. It can be seen that it is at this time that the pressing device (not shown in FIG. 4) is activated to form a loop, which is pressed against the core 1.
[0027]
FIG. 5 shows a state in which the cord 4 is anchored to the core mold 1 by the pressing device 2 in a region where the tread of the tire will be in the future. It can be seen that the cord portion 42 is extended between the attachment member 3 and the core mold 1 by moving the attachment member 3 in the direction of the radial arrow. During the movement of the mounting member 3, the cord 4 slides along the edge 51 of the movable guide 5. The movable guide 5 moves in the circumferential direction in a direction opposite to the rotational direction of the core 1, whereby the cord portion 40B is desirably separated from the cord portion 40A adhered to the core 1 by the previous movement of the mounting member 3. You can understand that you can do it. That is, the contact edge 51 of the movable guide 5 is _R The cord portion 40B is radially mounted on the core die 1 (more generally, along a desired track) since the core die 1 rotates continuously at a constant speed when the mounting member 3 moves. Can be understood).
[0028]
As described above, the final mounting orbit and the mounting pitch of the cords 4 on the core die 1 can be accurately controlled without causing the core die 1 to make a rattling movement on the stairs. The exact position of the movable guide 5 can be changed at every moment depending on the shape of the cam.
[0029]
FIG. 8 shows the outline shape of each arch portion of the cord 4 mounted on the core die 1 using the mounting member drive system without using the guide member of the present invention. On the other hand, FIG. 7 shows the results obtained using the same mounting member drive system as in FIG. 8 using the fixed guide 6 and the movable guide 5 of the present invention. In FIG. 7, the separation distance (i.e., the distance between adjacent arch portions) in each reciprocating movement of the cord is regular and constant, but each arch portion of the cord 4 in FIG. 8 is two by two. In pairs.
[0030]
When a fixed guide is used, the fixed guide is arranged near the movable guide, and the final trajectory of the cord 4 attached when the cord portion comes into contact with the edge of the fixed guide corresponds to the expected trajectory on the core mold. Position the fixed guide in such a position and orientation. By using a combination of a precisely adjusted guide and a movable guide that moves with a predetermined stroke (which itself has the correct position and orientation), it is possible to change the final trajectory occupied by the cord on the core mold, Thereby, the mounting pitch and the distance between the carcass cords can be controlled, and the mounting can be performed very accurately.
[0031]
Hereinafter, the advantages of the shapes of the end portions 510, 610, 511, and 611 will be described with reference to FIG. First, position 3 of the mounting member 3 at the left bead in FIG. 9 ⁽⁰⁾ Think from. This position is the reversal point of the mounting member 3. After the cord 4 is anchored to the core 1 by the pressing device 2 in the region 41 where it will become a bead of the tire, the mounting element 3 moves in the direction of the arrow shown immediately next to the mounting element 3 and the cord 4 is unreeled, Code part 42 ⁽¹⁾ Is the position 3 of the mounting member 3 ⁽⁰⁾ And between the core mold 1. At this time, the cord 4 comes into contact with the end 511 of the edge 51 of the movable guide 5. As shown, the cord 4 is substantially perpendicular to the movable guide 5. When the mounting member 3 moves further, the cord 4 moves to the position 3 ⁽²⁾ , 3 ⁽³⁾ And slides on the edge 51 of the movable guide 5. Code 4 is position 3 ⁽⁴⁾ Is reached, the position 3 of the mounting member 3 is reached. ⁽⁴⁾ Portion 42 between the core and the core 1 ⁽⁴⁾ Contacts the end 610 of the edge 61 of the fixed guide 6. As shown, the cord is substantially perpendicular to the fixed guide 6. When the mounting member 3 moves further, the cord 4 moves to the position 3 ⁽⁵⁾ , Then 3 ⁽⁶⁾ To abut on the edge 61 of the movable guide 6. On the return trip, the roles of the movable guide and the fixed guide are reversed, and cords are respectively attached to both sides of the mold. That is, when the mounting member 3 moves in the direction opposite to the arrow shown in FIG. 9, the cord 4 is paid out, and this time, firstly, it slides on the edge 51 of the movable guide on the right side of FIG. It slides on the left fixed guide 6. The shape of the cam 57 is such that the left movable guide 5 retreats from the adjacent fixed guide 6.
[0032]
Whether the cord is in contact with the movable guide or the fixed guide is selected according to the desired operation with respect to the track on which the cord 4 is attached and adhered to the core mold 1.
The above example describes the movable guide and the fixed guide combined with the mold halves, respectively. FIG. 10 shows a modification in which one movable guide 5 ′ moves from one bead to the other bead. I have. This movable guide 5 'not only functions as the above-mentioned movable guide 5 but also as the above-mentioned fixed guide, and cooperates with the movement of the mounting member 3 when moving from the shoulder to the opposite bead. Continue to guide. The movable guide 5 ′ is attached to hooks 50 ′ on both sides of the core 1 by a shaft. The hook 50 ′ is driven by an appropriate motion, and serves to displace the movable guide 5 ′ in the circumferential direction with respect to the core 1, and to change the track on which the cord 4 is attached to the core 1.
[0033]
Various modifications can be made without departing from the scope of the present invention. As already described in EP 0,580,055, for example, the pitch of the cords can be changed during the manufacture of the carcass reinforcement. The “mounting pitch” is the total distance between the distance between two adjacent cords and the diameter of the cord. In the case of a carcass reinforcement, the inter-cord distance changes with the measured radius, but it is not the change here but the pitch that is changed by a predetermined radius. For this purpose, it is only necessary to appropriately control the movable guide by changing the rotational speed of the mold according to a suitable rule without changing the operating speed of the cord mounting member (drive system and pressing device). For example, the position of the stopper 580 can be controlled by a stepper motor. For example, in the case of a radial carcass, it is possible to obtain a tire having a carcass reinforcing cord attached at a controlled pitch with respect to a predetermined radial position.
[0034]
The present invention further relates to a tire manufacturing method in which a reinforcing member is manufactured from a cord continuously supplied from a supply device as required by using a rotary core having a rotation axis, and a tire reinforcing member is sequentially created. . The method of the invention comprises the step of attaching a layer of raw rubber to the core at least in the region where the ends of the reinforcements are anchored, the core being constantly driven to rotate at a non-zero speed and the cord being anchored in synchronization with the rotation of the core. The mounting member, which is held cored in the area and passes the cord, reciprocates around the core forming one cord portion during the outward movement of the mounting member and one other cord portion during the return movement. The end of each cord portion is temporarily pressed onto the core at the anchor area, and a portion of the cord disposed between the mounting member and the core is circumferentially moved while the mounting member alternates. The movable guide is moved to move the cord portion mounted on the core mold to change the final trajectory formed by the cord portion, and the above-described movement is carried out along the desired trajectory to mount the desired number of cord portions on the surface of the mold. Repeat until And it features.
[0035]
Preferably, a loop of the cord is formed using a pressing device and the loop is pressed onto the core at each end of the final track. Furthermore, the core member is substantially annular, the rotation speed of the core die is constant, and the mounting member and the core die are so formed that the final track of each cord portion is at a fixed angle with respect to the center plane when mounted on the die. It is preferable to move the cord portion disposed between the peripheral portions in the circumferential direction.
[Brief description of the drawings]
FIG. 1 is a projection view showing a guide member of the present invention.
FIG. 2 shows a radial section of a mold and a guide member according to the invention.
FIG. 3a is a partial side view of the mold showing the operation of the elements of the guide member of the present invention during the movement of the cord attachment member from the area corresponding to the bead to the area corresponding to the tread.
FIG. 3b shows the next stage of FIG. 3a.
FIG. 3c shows the next stage of FIG. 3b.
FIG. 3d shows the next stage of FIG. 3c.
FIG. 3e shows the next stage of FIG. 3d.
FIG. 4 is a side view of the mold showing the shape of the guide member of the present invention in a feed stage in which the cord attaching member moves toward an area corresponding to the bead.
FIG. 5 is a side view of the mold showing the shape of the guide member of the present invention during the return movement stage in which the cord attaching member returns to the area corresponding to the tread.
FIG. 6 is a detailed view of a guide member driving mechanism according to the present invention.
FIG. 7 is a conceptual diagram of a result obtained by the present invention.
FIG. 8 is a conceptual diagram of a result obtained by using the same cord attaching means as in FIG. 7 without using the guide member of the present invention.
FIG. 9 is a radial cross-sectional view of the mold showing the use of the guide members of the invention on both sides (in the axial direction) of the mold.
FIG. 10 is a projection view showing a modification of the guide member of the present invention.

Claims (11)

A member (3) for attaching the cord (4) on the surface of the mold (1), which draws the trajectory of the alternating movement between the two inversion points, and in synchronization with this attachment member (3) near each inversion point. A pressing device for pressing the cord onto the mold at the end of the working track, the cord part (4) being continuously supplied from a supply device on demand, the cord portion being rotated along the desired track on the rotating mold. In a tire reinforcing material manufacturing apparatus, which is used together with a rotating mold (1), the tire reinforcing material is sequentially created by mounting.
(A) at least one movable guide (5) disposed opposite to the mold in a space between the mold and the locus drawn by the mounting member;
(B) driving means for moving the movable guide (5) in the circumferential direction;
(C) motor driving means for driving the driving means of the mounting member (3), the pressing device (2) and the movable guide (5) synchronously;
An apparatus comprising: 2. The device according to claim 1, wherein the movable guide (5) is arranged opposite the reversal point of one of the mounting members (3) and at least part of the trajectory of the mounting member (3). Device according to claim 1 or 2, further comprising a fixed guide (6) substantially parallel to the movable guide (5). The driving means has a cam (57), the movable guide (5) is rigidly connected to a hook (50), which has a roller (56) which follows the cross-sectional shape of the cam (57). The device according to claim 1. The movable guide (5) has a blade (52) which is basically curved in the same shape as the profile of the side surface of the mold (1), and this blade (52) has an edge (51) for contacting and guiding the cord. Apparatus according to any of the preceding claims, used in conjunction with a substantially annular mold. The movable guide (5) has a blade (52) which is basically curved in the same shape as the profile of the side surface of the mold (1), and the movable guide blade has an edge (51) for contacting and guiding the cord. Apparatus according to claim 3, wherein the fixed guide (6) is used with a substantially annular mold having a curved blade (62) essentially parallel to the movable guide curved blade (52). 6. The device according to claim 5, wherein the contact edge (51) of the movable guide has a segment comprised in one plane and an end (510) gradually moving away from said plane. 7. Apparatus according to claim 6, wherein the contact edge (61) of the fixed guide has a segment comprised in one plane and an end (610) gradually departing from said plane. A method of manufacturing a tire, wherein a reinforcing material is manufactured from cords continuously supplied from a supply device as required by using a rotary core having a rotation axis, and a tire reinforcing material is sequentially created. Including the step of attaching the raw rubber layer to the core in the area where the ends of the material are anchored, the core is always driven to rotate at a non-zero speed, and the cord is held in the core in the anchor area in synchronization with the rotation of the core The mounting member passing through the cord reciprocates around the core mold to form one cord portion during the outward movement of the mounting member, and another one cord portion during the returning movement of the mounting member. End is temporarily pressed onto the mandrel in the anchor area and is movable to circumferentially move a portion of the cord located between the mounting member and the mandrel during the alternating movement of the mounting member. Move the guide to the core How code portions attached changes the final trajectory to form, and repeating until the desired number of code portions on the surface of the mold along the above motion to desired trajectory is attached to. 10. The method of claim 9, wherein a loop of the cord is formed using a pressing device, and the loop is pressed onto the core at each end of the final track. The core mold is substantially annular, the rotation speed of the core mold is constant, and between the mounting member and the core mold so that the final track of each cord portion makes a fixed angle with respect to the center plane when attached to the mold. The method according to claim 9, wherein the cord portion arranged at the position is moved in the circumferential direction.

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