JP5944175B2 - Tire member manufacturing apparatus and manufacturing method - Google Patents

Description

  The present invention relates to a tire member manufacturing apparatus and a manufacturing method for manufacturing a narrow tire member (fiber cord band) by cutting a wide top surface.

  As one of various members of a tire, in order to improve the durability and running stability of the tire, for tires in which a tire cord array in which a large number of tire cords are arranged at a predetermined pitch is covered with topping rubber Members are used.

  Such a tire member is formed by covering the back and front of a weave fabric composed of a large number of tire cords arranged at a predetermined pitch and wefts woven in a substantially perpendicular direction with the tire cord with a topping rubber. After manufacturing a wide top fabric, the top fabric is manufactured by cutting with a cutter for each predetermined number of tire cords.

  However, the arrangement distance of the tire cord on the top side is not uniform, and the tire cord itself meanders. For this reason, when the top counter is conveyed in a state where the cutter is fixed in the width direction of the top counter, when the top counter is cut at a certain width, the tire cord is cut, and the number of tire cords of the tire member As a result, there is a problem that a tire member having a certain number of tire cords cannot be obtained.

  Therefore, a method has been proposed in which the unevenness formed by the tire cord on the surface opposite to the top is detected by laser scanning. However, only the detection of the unevenness on the surface opposite to the top causes many setting errors in the cutting position of the cutter. Therefore, there was a problem that the number of target tire cords was not reached.

  In view of this, there has been proposed a technique in which identification codes are mixed in an array of tire cords opposite to the top at intervals corresponding to the width of the tire member (for example, Patent Document 1).

JP 2002-321290 A

  With this technique, a tire member having a predetermined number of tire cords can be manufactured with high accuracy. However, since it is necessary to mix identification codes, there is a problem that productivity is lowered.

  In view of the above problems, the present invention can prevent a decrease in productivity due to the provision of an identification code, and can manufacture a tire member having a predetermined number of tire cords with high accuracy. It is an object to provide an apparatus and a manufacturing method.

The invention described in claim 1
A predetermined number of the wide tops formed by covering a weave fabric composed of tire cords arranged at a predetermined pitch and wefts woven in a substantially right angle direction with the tire cords with topping rubber. A tire member manufacturing apparatus for manufacturing a plurality of narrow tire members by cutting each tire cord,
A white chalk in which a choke is disposed so as to be movable in the width direction opposite to the top, and chalk powder is attached to the convex portions of the uneven surface on the top side formed by the tire cord, and a white mark is attached to the convex portions. Drawing means;
Counting means for sequentially detecting the white marks while moving in the width direction opposite to the top and counting the number of the white marks;
Laser irradiation means for irradiating the white mark with a colored laser to display a predetermined number of the tire codes when the count of the white mark by the counting means reaches a predetermined number;
A floating knife is disposed so as to be movable in the width direction of the top counter, and when the top counter is cut, the floating knife is inserted between the tire cord irradiated by the laser irradiation means and the tire cord not irradiated. tire by conveying the top anti-state, while the floating knife had along the tire cord, characterized in that it comprises a cutting means for cutting the top anti for each of the tire cord of a predetermined number It is a manufacturing apparatus of the member for use.

The invention described in claim 2
A tire member manufacturing method using the tire member manufacturing apparatus according to claim 1,
A white chalk drawing process of moving the chalk and attaching a mark by attaching chalk powder to the convex portion of the surface opposite to the top;
A counting step of sequentially detecting the white marks while moving in the width direction opposite the top and counting the number of the white marks;
When the count of the white mark reaches a predetermined number, a laser irradiation step of displaying a predetermined number of the tire codes by irradiating the white mark with a colored laser;
Upon cleavage of said top anti, by conveying the top anti state which takes the floating knife between the tire cord that is not irradiated with the tire cord that is irradiated by the laser irradiating means, the floating knife the without leaving along the tire cord, a method of manufacturing a tire member, characterized in that it comprises a cutting step of cutting the top anti for each of the tire cord of a predetermined number.

The invention according to claim 3
3. The tire member manufacturing method according to claim 2, wherein the tire member is manufactured by cutting the top sheet to form a large portion, and then cutting the large portion.

  According to the present invention, there is provided a tire member manufacturing apparatus and a manufacturing method capable of preventing a decrease in productivity due to provision of an identification code and manufacturing a tire member having a predetermined number of tire codes with high accuracy. can do.

It is a figure which shows typically the manufacturing apparatus of the member for tires of embodiment of this invention. It is a figure which shows typically operation | movement of the white chalk drawing means of the manufacturing apparatus of the member for tires of embodiment of this invention. It is a figure which shows typically operation | movement of the count means of the manufacturing apparatus of the member for tires of embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure explaining the floating knife of the manufacturing apparatus of the member for tires of embodiment of this invention, (a) is a side view, (b) is a front view.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a view schematically showing a tire member manufacturing apparatus according to the present embodiment, wherein (a) is a perspective view showing the entire apparatus, and (b) is a schematic view of white chalk drawing means. FIG. 2 is a diagram schematically showing the operation of the white chalk drawing means of the tire member manufacturing apparatus according to the present embodiment, and FIG. 3 is a diagram for the tire according to the present embodiment. It is a figure which shows typically operation | movement of the counting means of the manufacturing apparatus of a member.

1. Tire member manufacturing apparatus As shown in FIG. 2, the tire member manufacturing apparatus cuts a wide top counter 80 along a tire cord 82 for each predetermined number of tire cords 82 to obtain a tire member. Device. The top fabric 80 is formed by covering the weave fabric composed of the tire cords 82 arranged at a predetermined pitch as described above and the wefts woven with the tire cords 82 in a substantially right angle direction with a topping rubber. Is done.

(1) Overall Configuration of Apparatus As shown in FIG. 1, the tire member manufacturing apparatus includes a white chalk drawing unit 10, a counting unit 20, a laser irradiation unit (not shown) for irradiating a laser, and a floating knife 90. And a control means (not shown) for controlling these means.

  A feature of the present embodiment is that the cutting position of the floating knife 90 is determined by the white chalk drawing unit 10 and the counting unit 20.

(2) White Choke Line Drawing Unit As shown in FIG. 1A, the white chalk line drawing unit 10 includes a pair of left and right support columns 11, a lateral movement beam 12 installed between the support columns 11, and a line drawing tool 13. And.

  The lateral movement beam 12 is a ball screw, and a drawing tool 13 is screwed to the lateral movement beam 12. For this reason, the line drawing tool 13 can be moved in the width direction opposite to the top along the lateral movement beam 12 by the rotation of the lateral movement beam 12.

  The line drawing tool 13 includes a height adjusting mechanism (not shown) for adjusting the height position of the choke 131 and a laser distance measuring instrument (not shown) for measuring the distance from the lower end of the choke 131 to the convex portion of the top 80. ) And the height position of the choke 131 can be automatically set so that the choke comes into contact with the convex portion on the surface of the top surface 80 formed by the tire cord 82.

  Then, by moving the choke 131 in the width direction of the top counter 80, the white mark M is continuously attached to the convex portion of the top counter 80 by the choke 131 in the width direction of the top counter 80 (see FIG. 2).

(3) Counting unit As shown in FIG. 1A, the counting unit 20 includes a pair of left and right support columns 21, a lateral movement beam 22 installed between the support columns 21, and a white count sensor 23 (FIG. 3). Reference).

  The white count sensor 23 is guided by the lateral movement beam 22 and moves from one side end portion of the top counter 80 to the other side end portion. At this time, the white count sensor 23 extends in the width direction on the top counter surface. The white marks M aligned on a straight line are detected, and the number of white marks M is counted. When the predetermined number that has been input in advance is reached, the red laser is applied to the white mark M by the laser irradiating means as described below, so that the reflected light becomes a fluorescent color and the mark is easily identified (see FIG. 1).

(4) Laser irradiation means The laser irradiation means is an apparatus that displays a predetermined number of tire codes 82 by irradiating a predetermined number of white marks M counted by the counting means 20 and irradiating a red laser. The laser is not limited to red, but may be any color that facilitates mark identification.

(5) Cutting means As shown in FIG. 1, the cutting means is configured such that the floating knife 90 is set at an arbitrary position in the width direction of the top counter 80 in a free state in the width direction of the top counter 80. Yes.

  FIG. 4 is a view for explaining a floating knife of the tire member manufacturing apparatus of the present embodiment, in which (a) is a side view and (b) is a front view. As shown in FIG. 4, the floating knife 90 is supported by a guide rail B1, and the cutting edge of the floating knife 90 is moved away from the top counter 80 when not cut by the knife attitude switching means B2, and the top counter is turned when cut. The posture goes into 80.

  At the time of cutting the top counter 80, the floating knife 90 is set as described above, and then the top counter 80 is transported to cut the top counter 80 while the floating knife 90 moves along the tire cord 82.

2. Next, a method for manufacturing a tire member using the tire member manufacturing apparatus configured as described above will be described.

  The method for manufacturing a tire member according to the present embodiment includes a white chalk drawing step, a white count step, a floating knife position determination step, and a cutting step. Hereinafter, each step will be described.

(1) White chalk drawing process First, as shown in FIG. 1, the top roll 80 wound in a roll shape is drawn out to the tire member manufacturing apparatus, and the height of the choke 131 of the white chalk drawing means 10 as described above. After the position is automatically set, the drawing tool 13 is moved in the width direction of the top counter 80 so that chalk powder adheres to the convex portions on the surface of the top counter 80 and the white mark M is continuously applied.

(2) White Counting Step Next, as shown in FIG. 3, the white count sensor 23 sequentially detects the white marks M while moving in the width direction of the top 80 and counts the white marks M in advance. When the predetermined number is reached, as shown in FIG. 1, a predetermined number of white marks M (see FIG. 2) counted are irradiated with a red laser.

(3) Floating knife position determination step Next, an operator floats at a position where a tire member having a predetermined number of tire cords 82 is cut, using a predetermined number of white marks M irradiated with a red laser as a guide. Set the knife 90.

(4) Cutting process Next, the top counter 80 is conveyed toward the downstream side, whereby the top counter 80 is cut while the floating knife 90 is moved along the tire cord 82, and the red laser is irradiated. The number of tire cord 82 belt-shaped tire members is manufactured.

1. Examples and Comparative Examples In this example, the top reaction is cut using the method for manufacturing a tire member of the present embodiment described above, while in Comparative Example 1, the top reaction is cut with a predetermined width. In Comparative Example 2, the top surface was cut with a width determined by a conventional laser scan.

2. Contents of the test In both Example and Comparative Examples 1 and 2, the top reaction having a width of about 1445 mm was cut in the width direction, the number of target tire cords in each tire member was set to 80, and the top reaction was divided into 18 parts. .

  The number of tire cords of each tire member is measured, and the average number of tire cords and standard deviation (σ: 18 tire member measurement data obtained in Examples and Comparative Examples 1 and 2 are obtained from the measurement results. Standard deviation). The results are shown in Table 1.

  From Table 1, it can be seen that, in the case of the example, an error in the number of tire cords does not occur, and σ is also smaller than in Comparative Examples 1 and 2. From this result, it can be seen that the top sheet can be cut with high accuracy.

  While the present invention has been described based on the embodiments, the present invention is not limited to the above embodiments. Various modifications can be made to the above-described embodiments within the same and equivalent scope as the present invention.

DESCRIPTION OF SYMBOLS 10 White chalk drawing means 11 Support pillar 12 Horizontal movement beam 13 Drawing tool 20 Counting means 21 Support pillar 22 Lateral movement beam 23 White count sensor 80 Top counter 82 Tire cord 90 Floating knife 131 Choke B1 Guide rail B2 Knife attitude switching means M White mark

Claims (3)

A predetermined number of the wide tops formed by covering a weave fabric composed of tire cords arranged at a predetermined pitch and wefts woven in a substantially right angle direction with the tire cords with topping rubber. A tire member manufacturing apparatus for manufacturing a plurality of narrow tire members by cutting each tire cord,
A white chalk in which a choke is disposed so as to be movable in the width direction opposite to the top, and chalk powder is attached to the convex portions of the uneven surface on the top side formed by the tire cord, and a white mark is attached to the convex portions. Drawing means;
Counting means for sequentially detecting the white marks while moving in the width direction opposite to the top and counting the number of the white marks;
Laser irradiation means for irradiating the white mark with a colored laser to display a predetermined number of the tire codes when the count of the white mark by the counting means reaches a predetermined number;
A floating knife is disposed so as to be movable in the width direction of the top counter, and when the top counter is cut, the floating knife is inserted between the tire cord irradiated by the laser irradiation means and the tire cord not irradiated. tire by conveying the top anti-state, while the floating knife had along the tire cord, characterized in that it comprises a cutting means for cutting the top anti for each of the tire cord of a predetermined number Equipment for manufacturing parts. A tire member manufacturing method using the tire member manufacturing apparatus according to claim 1,
A white chalk drawing process of moving the chalk and attaching a mark by attaching chalk powder to the convex portion of the surface opposite to the top;
A counting step of sequentially detecting the white marks while moving in the width direction opposite the top and counting the number of the white marks;
When the count of the white mark reaches a predetermined number, a laser irradiation step of displaying a predetermined number of the tire codes by irradiating the white mark with a colored laser;
Upon cleavage of said top anti, by conveying the top anti state which takes the floating knife between the tire cord that is not irradiated with the tire cord that is irradiated by the laser irradiating means, the floating knife the without leaving along the tire cord, the production method of the tire member, characterized in that it comprises a cutting step of cutting the top anti for each of the tire cord of a predetermined number.   The method for manufacturing a tire member according to claim 2, wherein the tire member is manufactured by cutting the top portion after cutting the top surface to form a large portion.

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