KR101409671B1 - Apparatus for manufacturing bead of tire - Google Patents

Abstract

The present invention relates to a bead semi-finished product manufacturing apparatus for a tire for manufacturing a bead semi-finished product by winding a wire on a cylindrical drum. A bead semi-finished product manufacturing apparatus for a tire according to the present invention comprises a wire supplying device for supplying a wire, a cylindrical drum rotated by a drum rotating device for winding a wire supplied from the wire supplying device, A wire gripping device which is provided so as to be able to move forward and backward in a wire feeding path provided between the wire feeding device and the drum so as to be able to grip the supplied wire and move to the drum side and a proximity sensor for detecting a wire gripping device for holding the wire, And a control device which receives a detection signal from the proximity sensor and controls the operation of the wire feeding device, the drum rotating device, and the wire grip device.

Description

Technical Field [0001] The present invention relates to a bead semi-finished product manufacturing apparatus for a tire,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bead semi-finished product manufacturing apparatus for a tire, and more particularly, to a bead semi-finished product manufacturing apparatus for a tire for manufacturing a semi-finished bead by winding a wire on a cylindrical drum.

Tires are usually manufactured through a refining process, a semi-finished product process, a molding process, a vulcanizing process, and are marketed after an inspection process for selecting defective products in the manufacturing process. A brief description of each manufacturing process of a tire is as follows.

The refining process is a process of mixing all the components of the tire, such as natural rubber, synthetic rubber, reinforcing agents such as carbon black, and vulcanizing agents made of chemicals including sulfur, into rubber for tire, These include extrusion, rolling, cutting, and bead processes. The molding process is a process of making semifinished products into a cylindrical rubber composite by sequentially assembling the semifinished products onto a molding machine drum, and a cylindrical green case is made through the molding process. When a green case is put into a mold that serves as a mold, heat and pressure are applied, and the vulcanized rubber and vulcanized carbon are completely cured, and the tire is finished with elasticity.

In order to manufacture semi-finished bead semi-finished products in semi-finished product process, semi-finished bead semi-finished product is completed by winding rubber after being combined with a metal wire in a certain ratio and joining to a cylindrical drum. Technologies relating to the manufacture of semi-finished bead products are disclosed in Korean Patent Publication No. 2001-0036389 (published on May 05, 2007) and Korean Patent Registration No. 0906737 (published on May 11, 2009).

In the process of manufacturing the bead semi-finished product, when the rubberized wire is wound on the cylindrical drum, if the end of the wire is not properly engaged with the drum, the drum is rotated without holding the wire, Resulting in waste of energy.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method of manufacturing a bead semi-finished product by winding a wire into a cylindrical drum, And to provide a bead semi-finished product manufacturing apparatus for a tire.

In order to accomplish the above object, according to the present invention, there is provided an apparatus for manufacturing a semi-finished bead for a tire, comprising: a wire supplying device for supplying a wire; a cylindrical-shaped bead rotating device installed to rotate by a drum rotating device for winding a wire supplied from the wire supplying device; A wire gripping device which is movably provided in a wire feeding path provided between the wire feeding device and the drum so as to hold the wire supplied from the wire feeding device and move to the drum; A proximity sensor for detecting the wire gripping device moving toward the drum and a control device for receiving a detection signal from the proximity sensor and controlling operations of the wire feeding device, the drum rotating device, and the wire gripping device. The proximity sensor detects the wire gripping device when the wire gripping device grips the wire and moves from the drum to a set proximity distance to reach an end of the wire to the drum and provides the detection signal to the control device , The control device, when receiving a detection signal from the proximity sensor, separates the wire gripping device from the wire and operates the drum rotating device to rotate the drum.

The apparatus for manufacturing a semi-finished bead for a tire according to the present invention further comprises a wire end detecting sensor for detecting an end of the wire fed to the drum from the wire feeding device and providing a detection signal to the control device, The detecting sensor detects the end of the wire when the end of the wire supplied from the wire feeding device moves toward the drum by a predetermined distance from the wire gripping device and provides the detection signal to the control device, And the wire gripping device can be moved toward the drum while the wire is gripped by receiving the detection signal from the wire end detecting sensor.

The apparatus for manufacturing a semi-finished bead for a tire according to the present invention is characterized in that, when the wire supplying apparatus supplies the wire to the drum for the first time, the wire gripping apparatus holds the wire and moves toward the drum together with the wire to couple the end of the wire to the drum, The drum rotates to wind the wire while the end of the wire is coupled to the drum. Therefore, the drum is rotated in a state in which the end of the wire is firmly coupled to the drum, so that the semi-finished bead can be manufactured stably and wasteful energy waste caused by idling of the drum can be prevented.

FIG. 1 is a schematic view of a bead semi-finished product manufacturing apparatus for a tire according to an embodiment of the present invention.
FIG. 2 is a block diagram showing major components of a bead semi-finished product manufacturing apparatus for a tire according to an embodiment of the present invention.
3 and 4 are views for explaining the operation of an apparatus for manufacturing a semi-finished bead for a tire according to an embodiment of the present invention.

Hereinafter, the present invention will be described in more detail.

While the present invention has been described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. . Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

FIG. 1 is a schematic view of a bead semi-finished product manufacturing apparatus for a tire according to an embodiment of the present invention. FIG. 2 is a block diagram showing main components of a bead semi-finished product manufacturing apparatus for a tire according to an embodiment of the present invention. to be.

1 and 2, an apparatus 10 for manufacturing bead semi-finished products for a tire according to an embodiment of the present invention includes a wire supplying device 15 for supplying a wire W, a wire supplying device 15, A wire grip device 25 for holding the wire W supplied from the wire feeding device 15 and moving the wire W toward the drum 20, A proximity sensor 30 for holding the wire W and detecting the wire gripping device 25 approaching the drum 20 and a control device 40 for controlling the overall operation of the device. The cylindrical drum 20 rotates to the drum rotation device 22 controlled by the control device 40 and winds the wire W on the outer circumferential surface thereof. The cylindrical drum 20 is provided with a wire coupling portion 21 to which the end of the wire W is coupled. The bead semi-finished product manufacturing apparatus 10 for a tire according to the present invention rotates the drum 20 in a state in which the end of the wire W supplied from the wire feeding device 15 is securely coupled to the drum 20, (W), the bead semi-finished product can be stably manufactured.

The wire gripping device 25 is capable of moving forward and backward in the wire feeding path provided between the wire feeding device 15 and the drum 20 so as to grip the wire W supplied from the wire feeding device 15 and move toward the drum 20. [ Lt; / RTI > The wire grip device 25 includes a pair of gripping members 26 and 27 for tightly contacting the wire W in the directions opposite to each other to grip the wire W and a pair of gripping members 26 and 27 And a supporting member 29 for movably supporting the moving member 28 along the wire feeding path.

When the first gripping member 26 and the second gripping member 27 are brought close to each other and the first gripping member 26 and the second gripping member 27 are brought into close contact with the wire W in opposite directions to each other, And is sandwiched between the first holding member 26 and the second holding member 27. In this state, when the movable member 28 moves toward the drum 20 along the support member 29, the wire W is held by the pair of grip members 26 (27) Lt; / RTI > The speed at which the wire gripping device 25 moves toward the drum 20 while holding the wire W is equal to the feeding speed of the wire W that is fed toward the drum 20 by the wire feeding device 15. [

The wire gripping device 25 holds the wire W only until the end of the wire W is engaged with the wire connecting portion 21 of the drum 20 when the wire W is wound on the drum 20 The wire W is transferred to the drum 20 and the wire W is separated from the wire W when the end of the wire W is coupled to the drum 20. [ The structure of the wire gripping device 25 is not limited to the illustrated one. The wire grip device 25 is provided so as to be able to move forward and backward in the wire feeding path between the wire feeding device 15 and the drum 20 and moves near the drum 20 while holding the wire W, The wire W can be changed to various other structures that can return to the original position by being separated from the wire W. [

The operation of the wire gripping device 25 is controlled by the control device 40. When the wire gripping device 25 holds the wire W and moves to the proximity distance set from the drum 20 and reaches the proximity sensor 30, the proximity sensor 30 generates a detection signal, (40). At this time, the control device 40 separates the gripping members 26 and 27 of the wire gripping device 25 from the wire W. The proximity sensor 30 is provided with a contact lever 31. When the wire gripping device 25 holding the wire W reaches the proximity sensor 30 and contacts the contact lever 31, Generates a detection signal. In addition to having the contact lever 31 as the proximity sensor 30, various contact or non-contact sensors may be used.

The time at which the proximity sensor 30 generates the detection signal should be the time when the end of the wire W is coupled to the wire coupling portion 21 of the drum 20. The wire gripping device 25 is difficult to move to the wire fitting portion 21 of the drum 20 and the proximity sensor 30 is separated from the wire fitting portion 21 of the drum 20 toward the wire feeding device 15 The wire gripping device 25 should grip the wire W while the end of the wire W is moved toward the drum 20 to some extent. The distance from the portion of the wire gripping device 25 which first touches the proximity sensor 30 of the wire gripping device 25 to the end of the wire W when the wire gripping device 25 grips the wire W, It is preferable that the gap is substantially equal to the distance from the mounting position where the grip device 25 is detected to generate the detection signal to the wire coupling portion 21 of the drum 20. [

For this purpose, a wire end detection sensor 35 is provided in the wire feed path for detecting the end of the wire W to be fed from the wire feeder 15 to the drum 20 side. The wire end detection sensor 35 is installed at a position spaced a predetermined distance from the initial position of the wire grip device 25 toward the drum 20 and detects the end of the wire W transferred to the drum 20, And provides a signal to the control device lever 31. The control device lever 31 can move the movable member 28 to the drum 31 in a state in which the pair of gripping members 26 and 27 grip the wire W when receiving a detection signal from the wire end detecting sensor 35 20).

The wire end detecting sensor 35 may detect the end of the wire W and may detect the end of the wire W. In this case, A variety of contact or non-contact sensors may be used. The wire end detection sensor 35 may be omitted. In this case, the control device 40 controls the wire end point of the wire W to be connected to the wire grip device 25 through the wire feed speed, rotation angle, It is possible to grasp the time when the drum 20 has moved a certain distance toward the drum 20.

Hereinafter, the operation of the bead semi-finished product manufacturing apparatus 10 for a tire according to the present invention will be described.

1, when the wire W is first supplied to the drum 20, the wire gripping device 25 stops the pair of gripping members 26 (27) At this time, the wire feeder 15 is operated to feed the wire W toward the drum 20. When the wire W starts to be conveyed toward the drum 20 and its end moves from the wire gripping device 25 to the drum 20 at a certain distance, the wire end detecting sensor 35 detects the end of the wire W , And provides the detection signal to the control device (40).

When the detection signal is received from the wire end detection sensor 35, the control device 40 operates the wire grip device 25. [ At this time, the wire grip device 25 moves toward the drum 20 together with the wire W while grasping the wire W, as shown in Fig.

4, when the wire grip device 25 moves to the drum 20 while holding the wire W, when the end of the wire W is engaged with the wire coupling portion 21 of the drum 20 , The wire gripping device 25 is brought into contact with the contact lever 31 of the proximity sensor 30. At this time, the proximity sensor 30 generates a detection signal and provides the detection signal to the control device 40. [ The control device 40 receives the detection signal from the proximity sensor 30 and separates the pair of gripping members 26 and 27 of the wire gripping device 25 from the wire W, . Then, the drum rotating device 22 is operated to rotate the drum 20, thereby winding the wire W onto the drum 20 to produce a semi-finished bead. The wire gripping device 25 stopped in contact with the proximity sensor 30 returns to the original initial position while the drum 20 winds the wire W. [

As described above, in the apparatus 10 for manufacturing a semi-finished bead for a tire according to the present invention, when the wire feed device 15 first supplies the wire W to the drum 20, the wire grip device 25 feeds the wire W The wire W is moved toward the drum 20 together with the wire W to couple the end of the wire W to the drum 20 and the end of the wire W is coupled to the drum 20 by the wire gripping device 25. [ The drum 20 rotates to wind the wire W. Therefore, the semi-finished bead can be stably manufactured by rotating the drum 20 in a state where the end of the wire W is reliably coupled to the drum 20, and idling of the drum 20 is prevented, .

10: Semi-finished bead production apparatus for tire 15: Wire feeder
20: drum 21:
22; Drum rotation device 25: Wire grip device
26, 27: first and second holding members 28: moving member
29: support member 30: proximity sensor
31: contact lever 35: wire end detection sensor
40: Control device

Claims (2)

A wire feeder for feeding the wire;
A cylindrical drum installed to rotate by a drum rotating device to wind a wire supplied from the wire feeding device;
A wire gripping device installed to move forward and backward in a wire feeding path provided between the wire feeding device and the drum so as to hold the wire supplied from the wire feeding device and move to the drum;
A proximity sensor for detecting the wire gripping device holding the wire and moving toward the drum; And
And a control device that receives a detection signal from the proximity sensor and controls operations of the wire feeding device, the drum rotating device, and the wire gripping device,
The proximity sensor detects the wire gripping device when the wire gripping device grips the wire and moves from the drum to a set proximity distance to reach an end of the wire to the drum and provides the detection signal to the control device Wherein the control device separates the wire gripping device from the wire when the detection signal is received from the proximity sensor, and operates the drum rotating device to rotate the drum.
The method according to claim 1,
Further comprising a wire end detecting sensor for detecting an end of the wire fed from the wire feeding device to the drum and for providing the detection signal to the control device,
Wherein the wire end detecting sensor detects an end of the wire when the end of the wire supplied from the wire feeding device moves toward the drum by a predetermined distance from the wire gripping device and provides the detection signal to the control device, Wherein the wire grip device moves the wire grip device toward the drum when the wire grip device receives the detection signal from the wire end detection sensor.

Images