JPH0454574B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an apex adhering device for cross-ply tire beads that automatically adheres and cuts apexes to the outer periphery of a tire bead.

<Prior art> Conventionally, adhesion of the apex 5 to the outer periphery of a tire bead 4 having a cross-ply structure as shown in FIG. 4 has relied solely on manual labor, and this has improved the efficiency and labor-saving of the tire forming process. This was a major obstacle in achieving this goal.

<Object of the Invention> Therefore, the object of the present invention is to provide a bead apex for cross-ply tires that can automatically and efficiently attach and cut the apex, and furthermore, can be operated and managed by one person in large numbers. An object of the present invention is to provide a pasting device.

<Structure of the Invention> In order to achieve the above object, the structure of the present invention includes: a bead drive roller that rotationally drives the tire bead with an outer circumferential groove in contact with the inner circumference of the tire bead; an outer circumferential groove on the inner circumference of the tire bead; a fixed guide roller for the tire bead that rotates in contact with the tire bead; a movable guide roller for the tire bead that can move forward and backward relative to the inner periphery of the tire bead and that can bring an outer circumferential groove into and away from the inner periphery; The bead drive is provided on a movable frame that is moved forward and backward by a reciprocating means, and is provided from the outside of the tire bead that is positioned and rotated by the bead drive roller, fixed guide roller, and movable guide roller. an apex pressure bonding roller that is capable of contacting and separating from the roller and presses the apex held in the outer peripheral groove toward the bead drive roller via the tire bead to adhere the apex to the outer periphery of the tire bead; A measuring roller is moved toward and away from the fixed guide roller by a reciprocating means, and the tip of the apex wound on the tire bead is sandwiched between the fixed guide roller and the measuring roller. When,
an apex detection device that outputs an apex detection signal in response to a slight retraction of the measuring roller;
The present invention is characterized in that an apex cutter device is provided between the bead driving roller and the apex pressure roller, which is moved back and forth by a reciprocating means.

<Operation of the Invention> The operation of the present invention with the above configuration is such that the tire bead is positioned and rotationally driven by the bead drive roller, fixed guide roller, and movable guide roller that are in contact with the inner circumference of the tire bead, and the apex is automatically rotated. The apex is pulled out by the bead drive roller, and the apex is pressed by the apex pressure roller and automatically adhered to the outer periphery of the tire bead, and the tips of the adhered apex are in contact with each other and rotate. After the apex comes between the guide roller and the measuring roller and the apex detection device outputs a detection signal, the tip of the apex comes to the drive roller and stops at a predetermined amount. While the rollers are stopped and the movable frame separates the apex pressure roller from the drive roller, the apex cutter device is driven forward, so that the apex between the apex pressure roller and the bead drive roller is just one turn of the bead. It is characterized in that it is automatically cut to length, and the tip and the rear end of the cut match.

<Examples> Hereinafter, the present invention will be explained in detail with reference to illustrated examples. In FIG. 1, reference numeral 1 denotes a base set upright on a work floor (not shown), 2 a bead drive roller provided approximately at the upper center of the base 1 and in contact with the inner periphery of the upper end of the tire bead 4, and 3 the base. 1 is provided so as to be located diagonally below the bead drive roller 2,
A fixed guide roller 6 rotates in contact with the inner periphery of the side of the tire bead 4, and 6 is the bead drive roller 2.
A movable guide roller 7 is provided on the base 1 so as to be located on a vertical line passing through the central axis of the tire bead 4, and is capable of moving toward and away from the inner periphery of the lower end of the tire bead 4; This is an apex detection device provided to face the roller 3.

Reference numerals 8 and 8 refer to guide frames erected on both sides of the upper end of the base 1; 11 refers to a movable base frame that is guided by the guide frames 8 and 8 in a vertically movable manner; and 12 refers to the upper frame 9 in a vertical direction. a cylinder 1 attached to the movable base frame 11 for driving the movable base frame 11 in the vertical direction;
4 is a movable frame fixed to the rod tip of a cylinder 15 as a reciprocating means fixed along the vertical direction to the movable base frame 11; 25 is rotatably provided at the lower end 14a of the movable frame 14; The apex 5 is guided to the bead driving roller 2 facing from the upper end, and the roller 2
Apex pressure roller 26a, 2
6b, 26c, 26d, 26e are movable frames 1
An apex guide roller 16 is provided on the movable base frame 11 in the tangential direction of the apex attached to the bead, passing between the apex pressing roller 25 and the beam drive roller 2, and guiding the apex 5. This is an apex cutting device.

As shown in FIG. 2A, the bead drive roller 2 is provided with an outer circumferential groove 2c having a groove bottom 2c' which is knurled approximately in the center of the large diameter outer circumferential portion 2a, and on the outside of the large diameter outer circumferential portion 2a. It has a continuous tapered outer peripheral portion 2b and is rotationally driven by a motor (not shown). The outer circumferential groove portion is formed to have a rectangular cross section and a size that allows the tire bead 4 to fit tightly therein. The rotation angle of the bead drive roller 2 is detected by a rotation pulse generator (not shown). Further, as shown in FIG. 2B, the fixed guide roller 3 includes a large-diameter outer circumferential portion 3a on the inner side, that is, on the base 1 side, an outer small-diameter outer circumferential portion 3b, and an outer circumferential groove portion 3c between the two. rotates freely around a central axis perpendicular to . The outer circumferential groove portion 3c is formed to have a rectangular cross section with a size that allows the tire bead 4 to fit tightly therein. The movable guide roller 6 has an outer circumferential groove 6b on an outer circumferential portion 6a, and the outer circumferential groove 6b is formed in a size that fits into the tire bead 4. The movable guide roller 6 is attached to a roller shaft 6c provided on a roller shaft mounting bracket 21 that is guided along a guide rail 18 provided on the surface of the base 1 on a vertical line passing through the center axis of the bead drive roller 2. ing. The roller shaft mounting bracket 21 is attached to the rod end of a cylinder 22 provided on the surface of the base 1 along the guide rail 18, and by driving this cylinder 22 back and forth, the movable guide roller 6 can be raised and lowered. That's what I do. The retracted position of the cylinder 22 is determined by the proximity switch 23 near the rod of the cylinder.
It is possible to detect it with . The outer circumferential groove 2c of the bead drive roller 2, the outer circumferential groove 3c of the fixed guide roller 3, and the movable guide roller 6 at the lower end
The outer circumferential groove portion 6b is arranged on the same vertical plane so as to be inscribed in a circle having the same diameter as the tire bead 4. The apex detection device 7 has the central axis of the measuring roller 7b attached to a rod 7a in the same vertical plane facing the small diameter outer circumference of the fixed guide roller 3, and a cylinder 7c as an actuator provided parallel to the rod 7a. Then move rod 7a to arm 7.
It is possible to move forward and backward through d. At the forward position of the rod 7a, the outer periphery of the measuring roller 7b is in contact with the small diameter outer periphery 3b in a manner that covers the outer periphery groove 3c of the fixed guide roller 3 shown in FIG. 2B, and a proximity switch provided near the rod 7a 7e
Then, the forward position and the slight retraction of the rod 7a at the forward position (when the tip of the apex is held between the measuring roller and the fixed guide roller) are detected. Apex pressure roller 2 above
5. The crowned roller 26b and the crowned roller 26c sequentially move upward on the vertical line passing through the center axis of the bead drive roller 2, and the small-diameter plain roller 26
a is between the apex pressure roller 25 and the crowned roller 26b, and the middle groove roller 26e is
Each of the crowned rollers 26c is provided at the upper end of the movable frame 14 diagonally to the right, with each center axis parallel to the center axis of the bead drive roller 2 and a middle groove in the same plane as the outer peripheral groove 2c of the drive roller,
The width roller 26d is the crowned roller 2.
6c and the middle groove roller 26e in the vertical direction, that is,
The apex pressure roller 25 is provided in a direction perpendicular to the pressure roller 25. In addition, a medium grooved roller 2 as an apex guide roller having a deep outer peripheral groove is provided at the side end of the movable base frame 11 diagonally above the right side of the movable frame 14.
6f are provided parallel to the other apex guide rollers in the movable frame 14. These series of apex guide rollers contact the band-shaped apex 5 one after another on their outer periphery while rotating, and hold the apex 5 on one plane so as not to twist or sag, while pressing the apex pressure roller 25. Send to the outer periphery. Furthermore, on the upper right side of the base 1, there is a series of rows 31 on a substantially horizontal frame 31a.
b, 31b, . . . and is equipped with an apex feeder 31 for transferring apex extruded and supplied from an extruder (not shown). The apex cutting device 1 provided on the movable base frame 11
Reference numeral 6 designates a blade 16c (blade set portion 16b) as shown in FIG.
(heated by a heater (not shown) built into the
c' is configured so that, due to the protrusion of the cylinder 17, it can move forward within a plane including the outer circumferential groove 2c of the bead drive roller 2 to a position slightly beyond a vertical line erected on the central axis of the bead drive roller 2. This protruding position can be detected by a proximity switch 17a provided on the cylinder 17. The movable frame 14 is provided with a notch 14b approximately at the center of its lower end. The movable base frame 11 above the base 1 further has a second D at the lower end.
As shown in the figure, Y-shaped positioning and kicking arms 24a and 24b are provided on both sides of the bead drive roller 2 to protrude from the surface of the frame.
It is located in the notch 14b of. The cylinder 12 that drives the movable base frame 11 is provided with a proximity switch 27 that detects its retracted position, and the cylinder 15 that drives the movable frame 14 is provided with a proximity switch 28 that detects its protruded position.

The operation of the cross-ply tire bead apex adhesion apparatus having the above structure will be explained with reference to the operation diagram shown in FIG.

First, the tire bead 4 is placed in the outer circumferential grooves 2c and 3c of the bead drive roller 2 and the fixed guide roller 3 using an automatic bead feeding device (not shown). Next, moveable frame 1 at the upper end position
4 is driven by a cylinder 15 that moves in response to a signal from the bead feeding device and descends to the lower end position, and is pressed against the apex pressing roller 25 at the lower end of the frame.
The outer periphery of the bead drive roller 2 is pressed against the side outer periphery of the bead drive roller 2. At this time, the proximity switch 28 detecting the operation of the cylinder 15 sends a drive signal to the cylinder 22, and the cylinder 22 moves the movable guide roller 6 via the roller shaft mounting bracket 21 in the direction shown by arrow V in FIG. The movable guide roller 6 is driven to a preset lower end position according to the diameter of the tire bead, and is brought into pressure contact with the tire bead 4 at the outer circumferential groove 6b of the movable guide roller 6. At this time, the proximity switch 23, which has detected the operating position of the lower end of the cylinder 22, sends a drive signal to the cylinder 7c of the apex detection device 7.
drives the measuring roller 7b to the front end position in the direction shown by arrow W in FIG. At this time, the proximity switch 7e detects the movement of the rod 7a and sends a drive signal to the bead drive roller 2.
The bead driving roller 2 rotates the knurled groove bottom 2c' tire bead 4 in the clockwise direction in FIG. Along with this, the apex pressure roller 25 that is in pressure contact with the bead drive roller 2
rotates counterclockwise, and is sandwiched between the apex pressure bonding roller 25 and the plain roller 26a, and the upper apex guide rollers 26b, 26c, 2
6d, 26e, and 26f sequentially send the apex 5, which is strip-shaped and has a substantially semicircular cross section (Fig. 4).
is fed onto the bead drive roller 2. Since the tire bead 4 and the apex 5 are fitted into the outer circumferential grooves 2c and 25a with parts thereof protruding as shown in FIG. 2E, the apex pressing roller 25 descends in the direction of the arrow When the outer periphery of the bead drive roller 2 is about to come into pressure contact with the large diameter outer periphery 2a, both rollers are pressed against each other. In this way, as the bead drive roller 2 rotates, the apex 5 is continuously stuck on the tire bead 4, and the apex 5 is sent clockwise in FIG. When it comes between the rollers 7b, the tip protruding from the small-diameter outer peripheral portion 3b abuts against the measuring roller 7b, causing the rod 7a to retreat slightly. Then, the proximity switch 7e detecting the movement of the rod 7a outputs an apex detection signal to a pulse counter (not shown). The pulse counter receives this signal and starts counting the rotational pulses input from the bead drive roller 2. When the counted value reaches a predetermined value, the pulse counter stops the rotation of the bead drive roller 2 and stops the rotation of the cylinder. Send a backward drive signal to 15. In addition,
The above predetermined value is generated as the bead drive roller 2 rotates, which corresponds to the arc length from the point of contact of the tire bead 4 with the fixed guide roller 3 to the point of contact with the bead drive roller 2 clockwise. This is the number of rotation pulses, and this value is set according to the diameter of the tire bead. When the bead drive roller 2 stops rotating, the apex 5 is completely adhered to the entire outer circumference of the tire bead 4. The cylinder 15 receiving the drive signal drives the movable frame 14 in the direction indicated by arrow X in FIG. 1 to the upper end position. At this time, the proximity switch 28 detecting the upper end position of the cylinder 15 sends a forward drive signal to the cylinder 17, and the cylinder 17 moves the blade 16c with the rod 16a of the apex cutter device 16 in the direction shown by the arrow Y in FIG. The blade 16 is driven forward and heated.
In c, the apex is pulled up by the apex pressing roller 25 from the end of the apex stuck to the tire bead, and is cut near the end. The proximity switch 17a of the cylinder 17 detects the movement of the rod 16a upon completion of this cutting, outputs a drive signal, drives the cylinder 17 itself backward, and moves the cylinder 7c of the apex detection device 7 backward. Drive it. When the cylinder 17 retreats to the rear end position, the proximity switch 17a of the cylinder 17 outputs a drive signal to the cylinder 12, and the cylinder 12 moves the movable base frame 11 up to the upper end position in the direction shown by arrow Z in FIG. Drive. During this upward drive, the positioning and kicking guides 24a and 24b provided on the movable frame 11 pull up the tire bead that has been adhered, and the tire bead is elastically deformed to cause the bead drive roller 2 and fixed guide roller 3 to move upward.
Then, it comes off the movable guide roller 6, falls due to gravity, and enters the chute of a recovery device (not shown). In this way, it is possible to automatically attach the apex 5 to the tire bead 4, automatically cut the apex 5, and automatically kick out the tire bead 4 to which the apex 5 is attached. The proximity switch 27 of the cylinder 12 detects the upper end position and outputs a drive signal to the cylinder 22, which is connected to the movable guide roller 6 via the roller shaft mounting bracket 21.
is driven upward to the upper end position, and a series of apex adhesion is completed. Further, when adhering the apex 5 to tire beads 4 of different diameters, the movable guide roller 6 can be moved accordingly and the apex 5 can be applied at the same time. Further, since the outer peripheral groove bottom 2c' of the bead drive roller 2 is knurled, the tire bead can be driven accurately and reliably. Apex guide roller 26
a, 26b, 26c, 26d, 26e, and 26f, it is possible to prevent the apex 5 from twisting, sagging, or shifting from the flat surface, and to accurately and smoothly attach the apex 5 to the tire bead 4. In particular, the plain roller 26a The crowned rollers 26b and 26c have a centering function, and the width-shifting roller 26d has a width-shifting function, respectively, to prevent sag, and provide accurate and smooth supply of apex.
The apex, which moves up and down as the roller goes up and down, is prevented from coming off the roller. Further, the rod 7a of the apex detection device 7 is disposed in the normal direction of the contact point between the tire bead of average diameter and the fixed guide roller 3, and the pulse count value can be set in advance according to the diameter of the tire bead. , it can be widely applied to tire beads having diameters around the above-mentioned average diameter.

In this embodiment, the measuring roller 7b is provided so as to be able to approach and separate from the fixed guide roller 3, but it may also be provided so as to be able to come into contact with and separate from the bead drive roller 2, and the rotating pulse generator may also be provided so as to be able to come into contact with and separate from the bead drive roller 2. roller 2
Fixed guide roller 3 in contact with other tire beads
It can also be provided on the movable guide roller 6. In addition, in this embodiment, the entire movable base frame 11 is moved to the cylinder 1 in order to kick out the tire bead that has been adhered.
Although this is done by driving upward in step 2, it can also be done, for example, by driving a small removal arm.

<Effects of the Invention> As is clear from the above description, the apex re-sticking device of the present invention positions and rotates the tire bead using a bead drive roller, a fixed guide roller, and a movable guide roller, and applies pressure to the tire bead. It is possible to press the apex with the apex pressure roller to automatically and efficiently perform reliable adhesion.In addition, the apex cutter device, which operates based on the signal from the apex detection device, can press the apex with the apex pressure roller and attach it between the bead drive roller and the apex pressure roller. The present invention can automatically cut the apex, and can also be applied to various tire beads with different diameters, greatly contributing to streamlining and simplifying the tire forming process. Furthermore, the apex adhering apparatus of the present invention is automated in this manner, and a single person can operate and manage a large number of apex adhering apparatuses without requiring manual labor.

[Brief explanation of drawings]

Fig. 1 is a diagram showing an embodiment of the present invention, Fig. 2A is a partially cutaway side view of a bead drive roller, Fig. 2B is a partially cutaway side view of a fixed guide roller, and Fig. 2C is an apex cutter. Top view of the device blade, 2D
The figure is a perspective view of both positioning and kicking arms, Figure 2E is an explanatory diagram of the adhesion of the tire bead and apex, Figure 3 is an operational diagram of the device shown in Figure 1, and Figure 4
The figure is a cross-sectional view of a bead with Apex attached. 2...Bead drive roller, 2c...Outer circumference groove,
3...Fixed guide roller, 3c...Outer circumference groove, 6
...Movable guide roller, 7...Apex detection device, 7b...Measuring roller, 7c...Cylinder,
14...Movable frame, 15...Cylinder, 16
...Apex cutter device, 17...Cylinder, 22...Cylinder, 25...Apex pressure bonding roller (inner groove roller).

Claims (1)

[Scope of Claims] 1: a bead drive roller that rotates the tire bead with an outer groove in contact with the inner circumference of the tire bead; a fixed guide for the tire bead that rotates with an outer groove in contact with the inner circumference of the tire bead; With Laura;
A movable guide roller for the tire bead that can move forward and backward relative to the inner circumference of the tire bead and that can bring an outer circumferential groove into and out of contact with the inner circumference; and an outer circumferential groove for holding the apex, which is moved forward and backward by a reciprocating means. the bead drive roller,
The tire bead, which is positioned and rotated by a fixed guide roller and a movable guide roller, can be moved toward and away from the bead drive roller from the outside, and the apex held in the outer circumferential groove is directed toward the bead drive roller through the tire bead. an apex pressure bonding roller that presses the apex to the outer periphery of the tire bead; and a measuring roller that is moved toward and away from the fixed guide roller from the outside of the tire bead by reciprocating means; When the tip of the wound apex comes between the fixed guide roller and the measuring roller and is clamped, the measuring roller slightly retreats to output an apex detection signal, and in response to this signal, the bead drive roller outputs an apex detection signal. an apex detection device that counts input rotation pulses and stops the rotation of the bead drive roller when the count reaches a predetermined value; and a reciprocating means between the bead drive roller and the apex pressure roller. 1. An apex sticking device for a bead for a cross-ply tire, characterized by comprising an apex cutter device that moves forward and backward. 2. a bead drive roller that rotates the tire bead with an outer groove in contact with the inner circumference of the tire bead; a fixed guide roller for the tire bead that rotates with an outer groove in contact with the inner circumference of the tire bead;
A movable guide roller for the tire bead that can move forward and backward relative to the inner circumference of the tire bead and that can bring an outer circumferential groove into and out of contact with the inner circumference; and an outer circumferential groove for holding the apex, which is moved forward and backward by a reciprocating means. the bead drive roller,
The tire bead, which is positioned and rotated by a fixed guide roller and a movable guide roller, can be moved toward and away from the bead drive roller from the outside, and the apex held in the outer circumferential groove is directed toward the bead drive roller through the tire bead. an apex pressure bonding roller that presses the apex to the outer periphery of the tire bead; and a measuring roller that is moved toward and away from the fixed guide roller from the outside of the tire bead by reciprocating means; When the tip of the wound apex comes between the fixed guide roller and the measuring roller and is clamped, the measuring roller slightly retreats to output an apex detection signal, which is then inputted from the bead drive roller. count the rotational pulses
an apex detection device that stops the rotation of the bead drive roller when the count reaches a predetermined value; and an apex cutter device that moves back and forth between the bead drive roller and the apex pressure roller by a reciprocating means. and; a kick-out guide that lifts the tire bead to which the bead apex has been attached upward, elastically deforms the tire bead, and separates the bead from each bead support roller. Bead apex pasting device.