JP2009091693A - Tire cord treating apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tire cord treating method enabling nonstop continuous operation of a processing treatment such as dip treatment of a tire cord and effective for preventing mixing of a cord joint in the product. <P>SOLUTION: A tire cord treating apparatus 10 includes a treating apparatus body 17 to treat a tire cord 11 while traveling the cord 11, a supplying device 19 to supply the tire cord 11 to the treating apparatus body 17, and a winder 20 to wind the treated tire cord. The apparatus is further provided with a joint detector 21 to detect the joint 36 of the tire cord 11 supplied from the supplying device 19 and transmit the joint detection signal to the winder 20. The winder 20 has two winding shafts 18a, 18b and the winding shaft for the treated cord is automatically exchanged from 18a to 18b upon receiving the joint detection signal. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a tire cord processing apparatus, and more particularly to a tire cord processing apparatus capable of performing processing such as dip processing of a tire cord in non-stop continuous operation.

  For example, organic fiber tire cords such as nylon and polyester that are used as a reinforcing material for pneumatic tires maintain and improve tire performance such as durability and wear resistance. The cord characteristics are important, and so-called dipping treatment is performed in which the raw cord is immersed in an adhesion treatment liquid (dip liquid) and then subjected to heat treatment in order to impart these characteristics.

  When a single cord is continuously dip processed, a dip tank that stores a dip solution of the raw cord 101 drawn from a feeding bobbin 103 mounted sideways on the cord supply device 109 by a dipping machine 100 as shown in FIG. The dipping solution is attached to the raw cord 101 by passing the dipping solution through the dipping roll 105 in 104 and dipping. The raw cord 101 impregnated with the dipping solution by dipping is pulled up by a squeeze roll 106, dried in a state of tension in the length direction, transported to a heat treatment step 107, baked, and adjusted to adhesiveness and desired cord characteristics. The processing code 102 becomes a roll and is wound around the winding bobbin 108 by the winding device 110 in a roll shape.

  Conventionally, when the raw cord 101 of the feeding bobbin 103 disappears, the bobbin 103 is replaced and the new raw cord 101 is jointed and the dip processing is continued, but the replacement of the bobbin 103 is performed manually by measuring the timing. Further, it is necessary to stop the temporary device 100 in order to joint the cord 101. Conventionally, a festoon has been used to avoid the temporary stop of the apparatus, but there are problems such as an increase in the size of the apparatus and an increase in equipment costs.

  A method of taking out a cord with a vertical arrangement in which a cord wound around a bobbin is guided through a thread guide through a ring and a traveler and continuously draws the cord is described in Patent Document 1, but there is little remaining cord on the bobbin. (Several hundreds of meters), there is a problem that the code from the bobbin cannot follow the traveler and the code is broken.

Further, when the cord joint is mixed in a product such as a tire, the reinforcing effect of the portion is likely to be uneven, and it is preferable to remove the joint in terms of quality. However, when the cord joint is wound around the winding bobbin 108, , The position of the joint may be unknown and mixed into the product.
JP 2004-316049 A

  In view of the above problems, the present invention can perform processing such as dipping of tire cords in a continuous operation without interruption, and further prevent the cord joint from being mixed into the product on the winding side. It is intended to provide a tire cord processing apparatus capable of clarifying the joint position.

  The present invention relates to a tire provided with a processing device main body for processing the tire cord while running the tire cord, a supply device for supplying the tire cord to the processing device main body, and a winding device for winding the processed tire cord. In the cord processing device, a joint detector for detecting a joint of a tire cord supplied from the processing device main body and transmitting the joint detection signal to the winding device is provided, and the winding device has a plurality of winding shafts. The tire cord processing device further includes an exchanging device for automatically exchanging the winding shaft of the processed cord based on the joint detection signal.

  In the tire cord processing device of the present invention, the tire cord supply device arranges a plurality of windings around which the tire cord is wound, and the winding start portion of the tire cord wound around the winding being pulled out, and Jointing the winding end portion of the tire cord wound on the drawn-out scroll, the scroll being pulled out and the next drawn-out reel are juxtaposed, and the tire cord is axially moved from the scroll being pulled out The tire cord wound on the scroll being pulled out is removed, and at the same time, the tire cord is continuously pulled out from the scroll that is pulled out next through the joint in the axial direction of the scroll. The tire cord may be continuously supplied to the processing apparatus main body.

  In addition, a rotatable rotor that rotates about the center of the scroll is disposed at the end of the scroll, and the rotor is rotated by being driven by the tire cord that is pulled out. The rotation is stopped simultaneously with the stop, and the rotor applies a tension to the tire cord between the contact portion of the outer periphery of the scroll end and the cord surface layer portion of the scroll, and stops the tire cord. be able to.

  According to the present invention, there is no restriction on the timing and time for jointing on the cord supply side, and there is no need to pause the device to perform the joint. Operation becomes possible, and it can contribute to the improvement of the device operation rate and the reduction of the operation cost. Further, since the position of the cord joint becomes clear on the winding side, it is possible to reliably prevent the joint from being mixed into the product.

  Next, modes for carrying out the present invention will be described with reference to the accompanying drawings. In the present embodiment, description will be made according to an example of dipping processing of a single cord for tire, but the present invention is not limited to this example.

  As shown in FIG. 1, the tire cord dipping process includes a dipping tank 14 in which a dipping machine 10 stores a dipping solution for a tire cord 11 drawn from a flanged bobbin 13 mounted on a let-off device 19 by a dipping machine 10. The dip solution is attached to the tire cord 11 by passing the dip solution through the dipping roll 15 and dipping. The tire cord 11 impregnated with the dipping solution by dipping is pulled up by a squeeze roll 16, dried in a state where tension is applied in the length direction, transported to a heat treatment step 17, baked, and adjusted for adhesion and cord characteristics. It becomes the code | cord | chord 12, and is wound up by the winding bobbin 18a by the winding device 20 in roll shape.

  As shown in FIG. 2, the bobbin 13 from which the tire cord 11 is pulled out has flanges 21 on both sides of the bobbin 13, and is held by the letoff device 19 in a non-rotating state.

  In addition, the bobbin 13 can also use the type which does not have the flange 21 in both sides, for example, the pann, corn, cheese etc. which make a cylindrical shape. In this case, a disk-shaped plate body that substitutes for the flange may be arranged on the side surface of the bobbin on the cord drawing side and fixed to the bobbin.

  The bobbin 13 has a bobbin center hole 22 inserted into a support shaft 23 erected on the let-off device 19 and is placed vertically on the let-off device 19 and is in a non-rotating state. The bobbin 13 may be fixed to the let-off device 19 with a holder or the like, or may be held in a non-rotating state by its own weight or the frictional force between the let-off device 19 and the flange 21.

  The support shaft 23 is provided with a rotatable rotor 24 that rotates while sliding on the flange 21 with the shaft 23 as a center, that is, with the center of the flange 21 as an axis.

  The tire cord 11 is drawn out from the bobbin 13 in the bobbin axial direction, so that the tire cord 11 circulates along the outer periphery of the flange 21, and the drawn tire cord 11 is placed on the rotor 24 to cause the rotor 24 to follow the tire cord 11. Rotate while.

  At the same time as the withdrawal of the tire cord 11 stops, the rotor 24 stops rotating, whereby the tire cord 11 is tensioned between the outer periphery of the end of the flange 21 and the tire cord surface layer of the bobbin 13 by the rotor 24. So that it can be stopped and held in a closed state. That is, the tire cord 11 is tensioned by the repulsive force generated by the rotation stop of the rotor 24 so that the tire cord 11 is not slackened and slips down below the bobbin 13 when the withdrawal of the tire cord 11 is stopped. It is.

  In order to give tension to the tire cord 11, the setting of the rotor 24 is important. That is, the pulling condition of the tire cord 11 and the frictional resistance between the rotor 24 and the flange 21 surface are factors.

  The material and shape of the rotor 24 are not particularly limited. Examples of the material include metals such as iron, copper, aluminum, and brass, synthetic resins such as nylon and polyester, and ceramics. As shown in FIG. 3, the shape is as follows: (a) a plate-like body with a rotation hole 25, (b) a rod-like body with a rotation hole 25, and (c) a weight at the tip. Etc.

  Among these, from the viewpoint that the frictional resistance between the rotor 24 and the surface of the flange 21 can be arbitrarily and easily adjusted, a metal wire that can easily adjust the conditions related to the frictional force such as the shape and weight of the rotor 24 is preferable. Specifically, an iron wire, a copper wire, and an aluminum wire having a diameter of 1 to 4 mm are included.

  These rotors 24 can be selected from a plurality of rotors by adjusting the frictional resistance by inserting a rotation hole 25 into the support shaft 23 on the flange 21.

  Further, in order to make the frictional resistance on the flange side uniform with respect to the rotor 24, a disk-like plate body 26 can be disposed between the flange 21 and the rotor 24 as shown in FIG. 4.

  The disk-like plate body 26 is not particularly limited as long as its surface has a uniform frictional resistance, and is a metal plate such as iron, copper, aluminum, aluminum alloy, brass, or synthetic resin such as nylon or polyester. Although a board, a ceramic board, etc. are mentioned, the metal plate and synthetic resin film of thickness 0.05-3mm can be used conveniently from the point of the uniformity of frictional resistance, the ease of a process, and a price.

  Further, the frictional resistance can be set in consideration of the cord structure such as the thickness of the tire cord 11, the drawing speed, the flange outer diameter, and the like.

  Further, as shown in FIG. 3 (d), the disk-shaped plate body 26 is provided with a cut 26a in a part of the peripheral edge of the disk-shaped plate body 26, and a cord 11 is inserted into the cut 26a to form a rotor. it can.

  In the present invention, when a tire cord wound around a plurality of bobbins is supplied to a tire cord processing apparatus or the like by the above-described tire cord supply method, the cord is not temporarily stopped to joint the cords between the bobbins. Can be continuously supplied to the processing apparatus.

  5 to 7 show a let-off device when the tire cord 11 is continuously supplied from two bobbins 13A and 13B to a tire cord processing apparatus, for example, the dip processing apparatus 10.

  As shown in FIG. 5, the tire cord 11 is pulled out from the bobbin 13A and supplied to the dip processing apparatus 10, and the bobbin 13B from which the tire cord 11 is next pulled out is arranged in parallel. The bobbins 13A and 13B are placed vertically and the center hole 22 is inserted into the support shaft 23 of the let-off device 19, and the bobbins 13A and 13B are in a non-rotating state.

  A joint 36 is formed between a winding start portion 11a of the tire cord 11 wound around the bobbin 13A being pulled out and a winding end portion 11b of the tire cord 11 wound around the bobbin 13B to be pulled out next.

  As described above, the bobbins 13A and 13B are provided with a rotatable rotor 24 that rotates while sliding on the outer periphery of the flange 21 with the center of the flange 21 as an axis. The tire cord 11 extends from the bobbin 13 to the bobbin center. Thus, the tire cord 11 that has been pulled out wraps around the rotor 24 and is rotated while the rotor 24 is driven by the tire cord 11.

  As a result, when trouble or the like occurs in the dip processing apparatus 10 and the apparatus stops, even if the withdrawal of the tire cord 11 is stopped, the rotor 24 stops rotating at the same time, and the tire cord 11 is Since it is stopped and held in a state where tension is applied between the outer periphery of the end portion of the flange 21 and the tire cord surface layer of the bobbin 13, the tire cord 11 is not slackened and does not slide down below the bobbin, and at the time of trouble recovery Operation can be resumed smoothly.

  When the tire cord 11 of the bobbin 13A is lost, the tire cord 11 of the bobbin 13B connected via the joint 36 is automatically pulled out as shown in FIG. 7, and the tire cord 11 is the same as in the case of the bobbin 13A. Can be continuously supplied to the dip processing apparatus 10.

  In the case where tire cords wound around a plurality of bobbins are continuously supplied, it is preferable that the tire cord drawn out from the bobbin is always drawn out in a direction perpendicular to the bobbin center.

  Therefore, as shown in FIG. 8 (FIG. 8 shows a case where there are two bobbins), when the tire cord 11 wound around the bobbin 13A being pulled out disappears, the bobbin 13B connected via the joint 36 is removed. When the tire cord 11 is automatically pulled out, the position of the bobbin 13B from which the cord 11 is next pulled out is changed to the position of the bobbin 13A, so that the tire cord 11 pulled out from the bobbins 13A and B is always in the center of the bobbin. Can be pulled out vertically.

  The position of the bobbins 13A and 13B is changed by providing a sensor 37 for detecting the cord 11 when the tire cord 11 provided between the bobbins 13A and 13B is pulled out and replacing the stand 29 on which the bobbins 13A and 13B are automatically mounted. The positions of the bobbins 13A and 13B can be exchanged by a method such as sliding left and right or rotating the stand 29.

  Further, while the tire cord 11 is being supplied from the bobbin 13B to the apparatus 10, the empty bobbin on the bobbin 13A side is removed and a new fully wound bobbin 13A of the tire cord 11 is mounted, and the end of the winding and the tire of the bobbin 13B being pulled out If the winding start portion of the cord 11 is jointed, the tire cord 11 can be alternately supplied between the bobbins 13A and B, and the tire cord 11 can be supplied to the dip processing apparatus 10 indefinitely.

  The arrangement of the bobbin 13 on the let-off device 19 can be used in the above-described vertical position. However, as long as the bobbin can be kept non-rotating and the cord can be pulled out in the bobbin axial direction, the horizontal direction shown in FIG. It may be placed, or it may be inclined to the center as shown in (b). Also, three or more bobbins can be used.

  Next, an abnormal part detection device (joint detector) 21 that detects the cord joint 36 generated in the tire cord 11 and transmits the detection signal to the winding device 20 and the winding shaft automatically based on the detection signal. The biaxial winding device 20 to be replaced will be described.

  In the dip treatment apparatus 10 shown in FIG. 1, a tire cord abnormal part detection device 21 according to the present invention is provided between the drying and heat treatment step 17 and the winding device 20. In addition, the installation position of the abnormal part detection apparatus 21 is not limited to the position shown in FIG.

  FIG. 10 shows an example of an abnormal part detection device 21 for tire cords.

  As shown in FIG. 1, the abnormal portion detection device 21 of the tire cord passes the normal portion of the processing cord 12 that travels after finishing the drying and heat treatment step 17, and has a cord abnormality larger in diameter than the normal portion of the processing cord 12. The slit plate 122 is provided with a slit 123 that does not allow the portion 36 to pass therethrough.

  Here, the cord normal portion refers to a cord joint, a twist failure such as a jump out of a filament, a cord in the range of a so-called normal cord diameter without a twist of the cord, and the cord abnormal portion is the cord joint, This refers to the part where the cord diameter is larger than the normal part due to the occurrence of twisting failure such as jumping out of the filament, twisting of the cord, etc. Specifically, the cord diameter is 1.1 times or more of the normal part cord diameter Say the part.

  As shown in FIG. 11, when the abnormal cord portion (joint) 36 (hereinafter referred to as a joint) reaches the slit plate 122, the tire cord abnormal portion detecting device 21 passes through the gap of the slit 123. In this case, the slit plate 122 is rotated in the form of a door in the cord running direction with the rotation shaft 124 as a fulcrum so that the joint 36 can hook the slit 123.

  Examples of the rotation shaft 124 include a hinge that rotatably connects the abnormal part detection device 21 to the fixed column 40 provided in the dip processing device 10.

  FIG. 12 is a side view (a) and a front view (b) showing an example of the slit plate 122. The slit plate 122 includes a pair of slit forming plates 133 that set the interval S between the slit substrate 132 and the slit 123, and the slit forming plate 133 that sets the interval S between the slits 123 is fixed to the slit substrate 132 with screws 134. Then, a hole 135 for arbitrarily setting the interval S between the slits 123 is formed in the slit forming plate 133.

  Alternatively, a slit plate in which the slit substrate 132 and the slit forming plate 133 with the gap S between the slits 123 fixed are integrally formed can be used.

  The material of the slit forming plate 133 is not particularly limited, and examples thereof include metals, ceramics, and plastics. Further, it is preferable that the slit surface is processed smoothly so that the processing cord 12 running through the slit 123 does not cause damage such as fuzz.

  The interval S between the slits 123 is not particularly limited, but is preferably 1.1 to 3.0 times the cord diameter of the normal cord portion, and more preferably 1.3 to 2.0 times. If the distance S is less than 1.1 times the cord diameter of the normal cord portion, there is a high risk of malfunction due to cord vibration during travel, and workability is reduced, and if it exceeds 3.0 times, the joint 36 is passed. As a result, the detection sensitivity of the abnormal part is lowered and a joint or the like is mixed.

  Moreover, it is preferable that the slit plate 122 rotated by the contact of the joint 36 is returned to the original position by its own weight with the slit plate 122 as a vertical arrangement. Further, the hinge may be a spring-type hinge or may be returned by using a spring, a rubber string, or the like.

  The abnormal portion detection device 21 of the tire cord includes a detection unit that detects the joint 36 by the rotation of the slit plate 122 and transmits a detection signal thereof.

  As shown in FIGS. 10 and 11, the detection unit includes a detection sensor 125 and a proximity switch 126 in this example.

  The detection sensor 125 is connected to the slit plate 122 via the rotation shaft 124, and when the joint plate 36 is detected and the slit plate 122 rotates, the detection sensor 125 simultaneously rotates in the reverse direction with the rotation shaft 124 as a fulcrum.

  The proximity switch 126 is normally in contact with the detection sensor 125, but when the detection sensor 125 is turned into a non-contact state, the current is cut off and a joint detection signal is transmitted to each part of the dip processing apparatus 10. Yes, for example, a signal can be transmitted to the winding device 20 in the subsequent process to automatically operate the winding stop, operation method conversion, and the like.

  The winding device 20 has two winding shafts 18a and 18b on which bobbins are mounted. Based on the detection signal from the detection device 21, the processing code 12 being wound on one winding shaft 18a. Is automatically replaced with the take-up shaft 18b fitted with an empty bobbin, so that the joint 36 is present on the surface layer of the bobbin being wound up or on the core side of the replaced new bobbin. And the dipping device 10 can be operated without stopping. As long as the take-up bobbin is removed and the empty bobbin is replenished, continuous operation without interruption becomes possible. In addition, the winding device 20 may have a plurality of three or more axes.

  The biaxial winding device is provided with a length meter between the cord supply device 19 and the winding device 20 in addition to automatically replacing the winding shaft every time the abnormal part detection device 21 detects the joint 36. The processed tire cord can be wound around a new winding shaft at a fixed cord setting length or an arbitrary cord setting length.

  The tire cord processing apparatus according to the present invention includes a cord setter that simultaneously processes a plurality of single cords, a single cord rubber glue dip treatment, and an unadded single cord in addition to the single cord dip processing described in the above embodiment. It can be applied to vulcanized rubber coating treatment, and the obtained tire cord can be used as a reinforcing material for various rubber products such as pneumatic tires, conveyor belts, air springs, and seismic isolation rubbers.

It is the schematic which shows the dipping process of embodiment. It is a perspective view of the bobbin which shows the cord supply method of embodiment. It is a top view which illustrates a rotor. It is a partial enlarged view of a bobbin showing a code supply method of an embodiment. It is a bobbin front view at the time of supplying a cord from two bobbins of an embodiment. It is a bobbin top view in case a cord is supplied from two bobbins of an embodiment. It is explanatory drawing which alternately supplies the code | symbol of the two bobbins of embodiment. It is explanatory drawing which supplies automatically the code | symbol of the two bobbins of embodiment alternately. It is explanatory drawing which shows the example of arrangement | positioning of two bobbins. It is the schematic of a joint detection apparatus. It is the schematic at the time of rotation of a joint detection apparatus. It is the schematic of a slit board. It is the schematic which shows the conventional dipping process.

Explanation of symbols

11 …… Tire cord 17 …… Cord processing device body 18 …… Take-up shaft 20 …… Take-up device 21 …… Joint detector 36 …… Joint

Claims (3)

In a tire cord processing apparatus provided with a processing device main body for processing the tire cord while running the tire cord, a supply device for supplying the tire cord to the processing device main body, and a winding device for winding the processed tire cord ,
Detecting a joint of the tire cord supplied from the processing device body, and providing a joint detector for transmitting the joint detection signal to the winding device;
The tire cord processing device, wherein the winding device has a plurality of winding shafts, and an exchange device that automatically replaces the winding shaft of the processed cord based on the joint detection signal. The tire cord supply device comprises:
Arrange multiple scrolls wrapped with tire cords,
Jointing the winding start portion of the tire cord wound around the scroll being pulled out and the winding end portion of the tire cord wound around the scroll being pulled out next,
The scroll being pulled out and the scroll to be pulled out next are arranged in parallel, the tire cord is pulled out from the scroll being pulled out in the axial direction of the scroll, and the tire cord wound around the scroll being pulled out disappears at the same time. A tire cord is continuously drawn out from a scroll that is pulled out next through the joint in an axial direction of the scroll, and the tire cord is continuously supplied to the processing apparatus main body from the plurality of scrolls. The tire cord processing apparatus according to claim 1. A rotatable rotor that rotates about the center of the scroll is arranged at the end of the scroll,
The rotor rotates following the tire cord pulled out, and stops the rotation at the same time as the withdrawal of the tire cord,
The tire according to claim 2, wherein the rotor applies a tension to the tire cord between the contact portion on the outer periphery of the end portion of the scroll and a cord surface layer portion of the scroll to make the tire cord stationary. Code processing device.

Images