JP2005111962A - Apparatus composed of cylindrical conveyor for manufacturing rubber sheet reinforced with cords and manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an easy means of manufacturing a necessary amount of a highly qualified rubber sheet reinforced with cords in case of necessity, and to enable limited production in a wide variety of a tire belt material, a tire body ply material and the like with a compact apparatus by variously changing the cord material, the arrangement angle of the cord and the like. <P>SOLUTION: The manufacturing apparatus of the rubber sheet reinforced with the cords has a cylindrical conveyor the surface of which continuously moves in the axial direction, and a rotation arm revolving around the outside of the cylindrical conveyor on the axis of the cylinder. The manufacturing method is characterized in that the cord coated with a rubber led by the rotation arm is continuously and spirally wound around the surface of the cylindrical conveyor while keeping the cord in contact with each other. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an apparatus for manufacturing a rubber sheet reinforced with a cord and a method for manufacturing the same, and more particularly, to a rubber sheet reinforced with a cord by continuously winding a rubber-coated cord on a cylindrical conveyor surface using a rotating arm. Manufacturing method and manufacturing method of rubber sheet reinforced with cords that can be produced in a variety of small quantities for various types of tire belt materials, body ply materials, etc., by variously changing the cord material and cord arrangement angle, etc. About.

  Conventionally, the production of rubber sheets reinforced with cords used for tires, etc., has been mass-produced by a centralized production system, and 1000 to 2000 cords are unrolled and covered with a large calender device. He manufactured a roll and then cut it into the necessary width and angle to produce the necessary belt and body ply materials. However, in recent years, various high-performance fibers have been developed for tires, and various fiber specifications such as belt materials and body ply materials, fiber arrangement angles, and rubber specifications have been required. It was time consuming, wasteful and inefficient to manufacture in a mass production system as described above.

  Further, as seen in Japanese Examined Patent Publication No. 35-18602, a ribbon made of rubber-coated cord is continuously wound spirally around a large diameter roller, and the side edges of the ribbon are joined together to form a cylindrical wound body. Forming and cutting the wound body to form a rubber sheet reinforced with a large area cord, and cutting out a belt material or a body ply material in which the cord is arranged in a predetermined shape in a predetermined shape from the sheet Yes, but there is a lot of waste from cutting. In this case, a rubber-coated cord is wound around a small diameter roller to create a cylindrical body, cut out, and pasted together to create a ply material with a predetermined shape. It takes time and effort, and the quality of the joining portion remains uneven in quality.

  Moreover, as seen in JP-A-2001-145961 and JP-A-2002-127270, a belt material, a body ply material, and the like are manufactured by winding a cord-reinforced rubber-coated ribbon around a mandrel having a predetermined diameter and cutting it at a predetermined angle. There is a method, but a new mandrel was required each time the cord angle and driving of the material were changed.

Japanese Examined Patent Publication No. 35-18602 (page 1-2, FIG. 1). JP 2001-145961 A (page 1-3, FIGS. 1 and 12). JP 2002-127270 A (page 1-3, FIG. 1).

  The present invention has been made in order to eliminate the above-mentioned drawbacks of the prior art, and the object of the present invention is, in recent years, as represented by the Toyota system in automobiles, as much as necessary when necessary. In addition, a method capable of easily producing a high-quality product is made possible in the production of rubber sheets such as tires. Another object is to make it possible to supply a wide variety of products such as various types of cords and rubbers by a simple means in a necessary amount when necessary. Another object of the present invention is to make it possible to manufacture a rubber sheet reinforced with continuous cords having different cord arrangement angles by simply changing the cord arrangement angles. Another object is to reduce waste of sheet material that is discarded and is not used. Another object of the present invention is to provide a rubber sheet reinforced with a high-quality cord with less disturbance, eliminating unevenness in the circumference when the ribbons are superimposed on the drum. Another object of the present invention is to eliminate waste of time and labor for creating a belt material and a body ply material by overlapping a plurality of the rubber sheets. Still another object is to provide an apparatus that can be easily manufactured with an inexpensive small-sized apparatus.

  The present invention has been made to achieve the above object, and its features as a manufacturing apparatus are as follows. The present invention includes a cylindrical conveyor whose cylindrical surface continuously moves in the axial direction, and a rotary arm that rotates around the cylindrical axis on the outer side of the cylindrical conveyor, and has been guided by the rotary arm. The present invention relates to an apparatus for manufacturing a rubber sheet reinforced with a cord, which is configured to be continuously spirally wound while the cords are in contact with each other on the surface of a cylindrical conveyor. In the present invention, the cylindrical conveyor is configured to rotate about a cylindrical axis, and a cylindrical rubber sheet formed by winding a rubber-coated cord around the cylindrical conveyor is cut out in a spiral shape. The present invention relates to an apparatus for manufacturing a rubber sheet reinforced with a cord, which is configured to be a continuous body of rubber sheets in which a cord is arranged at a predetermined angle α with respect to the longitudinal direction of the sheet by further including a cutting tool. . The present invention also relates to an apparatus for manufacturing a rubber sheet reinforced with a cord, in which the rotating arm is installed in multiple stages. The present invention also relates to an apparatus for manufacturing a rubber sheet reinforced with a cord, further comprising a pressing tool that presses the cylindrical rubber sheet formed by winding the rubber-coated cord around the cylindrical conveyor. The present invention also provides a rubber coating device for coating rubber by passing a cord subjected to adhesion treatment to the rubber fed from the reel through a rubber coating die for coating the rubber extruded from the steel extruder. The present invention relates to an apparatus for manufacturing a rubber sheet reinforced with a cord, which is configured to be guided to the rotary arm while continuously producing a rubber-coated cord. The present invention also relates to an apparatus for manufacturing a rubber sheet reinforced with a cord, in which a cord tension adjusting device is provided between the rubber coating device and the rotating arm. The present invention also relates to an apparatus for producing a rubber sheet reinforced with a cord, further comprising a twisting machine or a synthesizing machine in which the cord guided to the rotating arm is fed while being twisted. Furthermore, the present invention provides a rubber sheet reinforced with a cord, wherein the cord is a steel cord, and has an untwisting machine that is unwound so as to cancel the twist generated by the rotation of the rotating arm and is unwound from a reel. Relates to the device.

  The present invention has been made to achieve the above object, and features as a manufacturing method thereof are as follows. In the present invention, rubber-coated cords guided to a rotating arm that rotates around the axis of a cylinder on the surface of a cylindrical conveyor whose cylinder surface continuously moves in the axial direction are brought into contact with each other. The present invention relates to a method of manufacturing a rubber sheet reinforced with a cord that is continuously spirally wound. In addition, the present invention provides a cylindrical rubber sheet formed by winding a rubber-coated cord around the cylindrical conveyor by spirally rotating the cylindrical conveyor with a cutting tool. The present invention relates to a method of manufacturing a rubber sheet reinforced with a cord, in which a rubber sheet in which a cord is arranged at a predetermined angle α with respect to the longitudinal direction of the sheet is cut out. Furthermore, this invention relates to the manufacturing method of the rubber sheet reinforced with the code | cord | chord which winds a rubber-coated code | cord | chord around a cylindrical conveyor in multiple stages by having the said rotation arm in multiple stages.

  The present invention relates to the manufacture of a rubber sheet reinforced with a cord. The cord in the present invention includes a cord made of fibers, a monofilament, a thin metal wire, or the like, or a single piece thereof. In addition, the form of the cord may be a multifilament made of long fibers, a spun yarn made of short fibers, a covered yarn in which another yarn is wound around a core yarn, or a yarn called picco-twisted yarn. Moreover, the thread | yarn called a design twist thread | yarn can also be used. These cords use cords that have already been bonded, but can also be connected to a dipping device and guided to the rubber coating means while being dipped. As cord materials, nylon, polyester, polyvinyl alcohol, aramid fiber, wholly aromatic polyester fiber, organic fiber such as PBO (paraphenylene benzobisoxazole) fiber, inorganic fiber such as glass fiber, alumina fiber, carbon fiber, Metal fibers such as steel and amorphous metal can also be used.

  The cord used in the present invention is subjected to an adhesion treatment for improving adhesion to rubber. A typical method for adhering to the cord is a method in which resorcin formalin latex and a rubber emulsion are attached to an organic fiber, moisture is dried, and then resorcin formalin is baked to improve adhesion to rubber. The steel cord is subjected to nickel plating, brass plating for electrodeposition of copper and zinc, zinc plating based on zinc, or the like. Further, for metal fibers, means such as adhesion treatment using cobalt, molybdenum, silane coupling agent, or the like can be used. These bonding processes are appropriately selected based on the type of cord, the type of rubber, the required adhesive strength, and the like, and are not limited to those exemplified here.

  The rubber used in the present invention is not only vulcanized rubber such as natural rubber and synthetic rubber, but also called thermoplastic elastomers such as polyurethane and SBS (styrene butadiene styrene rubber). Rubber that does not require vulcanization can also be used. These cords and rubbers are appropriately selected depending on the intended use of the rubber sheet. The rubber-coated cord refers to the cord described above coated with the rubber described here. For the coating of rubber, the rubber extruded from the rubber extruder is coated on the cord in the die, but the rubber treated with a calender or the adhesive latex is coated on the cord. A method of drying the solvent can also be used.

  The present invention relates to a means for producing a rubber sheet reinforced with a cord by continuously winding a rubber-coated cord on a cylindrical conveyor surface using a rotating arm. The cylindrical conveyor has a columnar shape consisting of a circular plane part and a curved side surface, and the side part forms a conveyor, and wraps around this cylindrical side surface (hereinafter referred to as the cylindrical conveyor surface). The rubber clothing cord is continuously moved in the axial direction of the cylinder. The cylinder has a circular bottom surface, but the circle does not mean a strict circle, and may be an ellipse or a polygon. In the case of a polygon, it is a polygonal column rather than a cylinder. Each rectangular part on the side surface of the polygonal column can be constituted by an independent conveyor.

  In the present invention, a cylindrical sheet in which a rubber-coated cord is wound in a cylindrical shape on a cylindrical conveyor is obtained by winding a rubber-coated cord guided to the rotating arm on the surface of the cylindrical conveyor using a rotating arm. It is related with the means to form. The rotating arm rotates outside the cylindrical conveyor around the axis of the cylinder. By this rotation, the guided rubber-coated cord is spirally wound around the cylindrical conveyor surface. ing. The rubber-coated cords wound around the surface of the cylindrical conveyor are continuously wound while the rubber-coated cords are in contact with each other. The number of rubber-coated cords guided to the rotating arm is usually one, but a plurality of cords can be supplied as necessary. In addition, the rotating arm is usually composed of one arm, but a rotating cord feeder can be provided to have a plurality of rotating arms. Further, by guiding the rubber-coated cord from the front and rear of the cylindrical conveyor, a multi-stage (usually two-stage rotation arm can be provided) because the apparatus becomes too complicated. The rubber-coated cords spirally wound around the cylindrical conveyor by these multiple rotary arms and multistage rotary arms are spirally wound while contacting each other so that the multiple cords form a single sheet as a whole. Configured to be

  It is preferable that the cylindrical conveyor in the present invention is further rotated around the axis of the cylinder. An object of the present invention is to manufacture a rubber sheet in which cords are arranged at a predetermined angle α in a reinforcing rubber sheet. In order to freely change the angle α, the cylindrical conveyor of the present invention is a cylinder. The angle α can be freely set by rotating the cylindrical conveyor itself around the axis and controlling the rotational speed in relation to the conveyor speed. In addition, although the system which adjusts the angle (alpha) by rotating a cutting tool is also considered, since an apparatus becomes complicated and a cutter rotates, it is not preferable also in terms of safety.

  The apparatus for producing a rubber sheet reinforced with the cord of the present invention preferably has a pressing tool that presses the cylindrical rubber sheet formed by winding the rubber-coated cord around the cylindrical conveyor. The pressing tool makes the arrangement of the rubber-coated cords of the cylindrical rubber sheet uniform, makes the bonding between the rubber-coated cords more reliable, and smoothes the surface of the rubber sheet. The pressing can also be performed by directly pressing a roller or the like against the cylindrical conveyor.

  The apparatus for producing a rubber sheet reinforced with the cord of the present invention preferably has means for cutting a cylindrical rubber sheet formed by winding the rubber-coated cord around a cylindrical conveyor in a spiral shape with a cutting tool. The cylindrical rubber sheet can be cut into a predetermined length as a cylindrical sheet as it is to obtain a product. However, the cylindrical rubber sheet is cut open with a cutting tool, and the cord is arranged at a predetermined angle α with respect to the longitudinal direction of the sheet by cutting out in a spiral shape due to the relationship between the conveyor speed and the rotational speed of the cylindrical conveyor itself. The rubber sheet can be taken out continuously. The cutting place can be performed on the conveyor, but it is preferable to cut the conveyor when leaving the conveyor so as not to damage the conveyor. By providing a cutting tool integrated with the above-mentioned pressing tool at the place where it exits the conveyor, the apparatus becomes compact. As the cutting tool, various types such as a razor blade, a rotary blade and a receiving roller, push-cut by an upper and lower blade, a shear cutter, a laser beam, high-pressure water, and the like are used.

  The angle α with respect to the longitudinal direction of the rubber sheet in which the cords are arranged in a spiral cut and opened is the cylindrical diameter of the cylindrical conveyor, the rotational speed of the cylindrical conveyor, the rotational speed of the rotary arm, the conveyor speed, and the cylindrical conveyor is rotated once. It is determined by the distance traveled by the conveyor. The width of the rubber sheet reinforced with the cord in the present invention is determined by the diameter of the cylindrical conveyor. The arrangement of the cords of the predetermined angle α is selected from the range of 80 to 90 degrees for a body ply sheet of a radial tire, for example, and 10 to 35 degrees, preferably 15 to 30 degrees for a tire belt material. Here, the body ply sheet is a carcass sheet that forms a skeleton of a radial tire, a bias tire, a belted bias tire, or the like, and the belt sheet is a cord that is strong and hardly stretched in a radial tire, a belted bias tire, or the like. These are arranged closely in the circumferential direction, and have a so-called “tag effect”. In addition, some rubber sheets reinforced with cords used for tires are called breakers and cap plies, and are included in rubber sheets reinforced with cords of the present invention.

  In the rubber-coated cord in the present invention, the cord that has been subjected to the adhesion treatment to the rubber fed from the reel (or bobbin) passes through the rubber-coated die that covers the rubber extruded from the rubber extruder, so that the rubber It is preferable that the covering cord is led to the rotating arm of the present invention while being continuously formed. Since the rubber coating apparatus is connected to the apparatus having the cylindrical conveyor as described above, the complicated process of taking out the space for winding, winding and storing the cord when covering the rubber in a separate process is not necessary. In addition, waste at the time of feeding the cord and the winding core is eliminated. Further, since the cord is not wound up, the cord is less contaminated, the chemical does not bloom, and a fresh rubber-coated cord can be used, so that the quality is excellent.

  When a rubber coating device is connected to a device having a cylindrical conveyor and a rotating arm, it is preferable to provide a tension adjusting device that keeps the tension of the cord guided to the rotating arm constant. Since the rubber extruder requires time until the amount of rubber extrusion becomes constant, the cord supply speed is required to stably operate the apparatus of the present invention without wasting the rubber-coated cord in the meantime. It is possible to deal with small troubles in the rubber sheet forming apparatus reinforced with cords or without stopping the extruder. For tension adjustment, a dancer roller is provided to detect the position of the dancer roller or to electrically detect the tension itself, or the rotational speed of the rotating arm is changed or supplied to the rubber coating device. This is done by changing the speed of the code.

  Further, the cord that has been subjected to the adhesion treatment to the rubber fed from the reel in the present invention is fed while being twisted by a twisting machine or a yarn blending machine and guided to the rotating arm of the present invention. You can also. As a means for twisting the cord, a twisting machine is usually used. The twisting machine is one that twists a cord, and includes one that twists a plurality of cords while combining them. Further, the principle of a ring spinning machine or a mill spinning machine used as a spinning machine for short fibers can be used. The twisting machine is basically a ring twisting machine, but depending on the type, an up twister, double twister, flyer type twisting machine, Italy type twisting machine, covering type twisting machine, etc. can be used. Type can also be used. The twisting machine in the present invention is preferably one that is twisted while the cord is being fed, and the one that combines the cord feeding machine and the twisting machine is most preferred.

  Furthermore, the cord that has been subjected to the adhesion treatment to the rubber fed out from the reel in the present invention is a steel cord, and when the steel cord is drawn out from the reel, it passes through an untwisting machine and is rotated by a rotating arm. It can be a twist and a cancellation that occurs. If a steel sheet is made with a rubber sheet that includes a torsion generated by the rotation of a rotating arm, when the sheet is cut out and used as a belt material, the sheet curls due to the torsion, resulting in poor workability. . In such a case, by rotating the twisting machine and the yarn spinning machine in the reverse direction, they can be used as an untwisting machine to achieve the object.

  The present invention eliminates the inefficiency and waste of materials and time in the conventional mass production system, and is a system that can easily produce a high-quality product in a necessary amount when necessary, and a rubber such as a tire. Made possible in the manufacture of sheets. In addition, we were able to supply a wide variety of products, such as various types of cords and rubbers, by the simple means and in the required amount when needed. Further, it is possible to manufacture a rubber sheet reinforced with continuous cords having different cord arrangement angles by simply changing the cord arrangement angles. Further, the waste of the sheet material that is discarded and is not used can be reduced. In addition, the present invention can eliminate the time and labor that are required to overlap many ply sheets. Furthermore, the present invention has provided an apparatus that can be easily manufactured with an inexpensive small-sized apparatus.

  Hereinafter, the present invention will be described based on embodiments shown in the drawings. FIG. 1 is a side view showing an apparatus for producing a rubber sheet reinforced with a cord of the present invention. The cylindrical conveyor 1 is configured to be circumferentially surrounded by circulating conveyor belts 2a, 2b and the like. Driven by the gear 3, the shaft 4 rotates, the drive is transmitted from the flange 5 fixed to the shaft 4 by the bevel gears 6a and 6b, and the circulation belts 2a and 2b circulate, and the circulation belt circulates. Thus, the surface of the cylindrical conveyor 1 moves in the axial direction, and the cylindrical conveyor 1 moves in the axial direction. The cylindrical conveyor 1 is driven by the gear 7, and the cylindrical conveyor 1 itself also rotates about a cylindrical axis (a chain line shown in the shaft 4 in the figure), thereby arranging a later-described code arrangement. The angle α is adjusted. The rotating arm 8 is rotated by receiving a drive from the gear 9, and the rubber-coated cord 10 guided from the reel is guided by the yarn winding guide 11 while rotating outside the cylindrical conveyor 1 by the rotating arm 8. Then, it is wound around the surface of the cylindrical conveyor 1 by the rotation of the rotary arm 8. The rubber-coated cord 10 wound around the surface of the cylindrical conveyor 1 is continuously spirally wound while being brought into contact with each other by the movement of the surface of the cylindrical conveyor 1, thereby forming a cylindrical rubber sheet 12 composed of a rubber-coated cord group. . The cylindrical rubber sheet 12 is pressed and uniformed by the pressing tool 13, and is cut open by a cutting tool 14 (a razor blade in the drawing) to become a rubber sheet 15 reinforced with a cord. A rubber sheet manufacturing apparatus reinforced with a cord composed of the cylindrical conveyor 1 and the rotary arm 8 is referred to as a rubber sheet forming apparatus 17 reinforced with a cord. In FIG. 1, another rubber-coated cord 16 is supplied from the opposite side, and another set of rotary arms similar to the rotary arm 8 shown in the figure is provided, so that the rubber-coated cords 10 and 16 are provided in multiple stages on the cylindrical conveyor. Can be wound in multiple stages. Further, in FIG. 1, the entire rubber sheet forming apparatus 17 reinforced with cords is supported by a gantry from the front and rear, but by making this support only at the front, the rubber sheet rubber reinforced with the produced cords 15 can be handled easily.

  FIG. 2 is a cross-sectional view taken along line AA in FIG. The cylindrical conveyor 1 is a cylinder with eight conveyor belts 2a, 2b, 2c, 2d, 2e, 2f, 2g, and 2h (which is a polygonal column, but in the present invention, such a form is also included in the cylinder). And the cross section is a circle (a polygon having a break point, but in the present invention, such a shape is also included in the circle). The return of the circulation of the circulation belt 2a is 2a-2, and the return of the circulation of the circulation belt 2b is 2b-2. A cylindrical rubber sheet 12 is formed by winding a rubber-coated cord around a cylindrical conveyor 1 constituted by the circulation belt.

  FIG. 3 is a side view showing an example in which a rubber coating step of covering a cord with rubber and a rubber sheet forming device 17 reinforced with the cord are connected. The cord 21 that has been subjected to the adhesion treatment to the rubber is fed out from the bobbin 23 installed on the creel stand 22 and guided to the die 26 of the rubber extruder 25 through the turn rollers 24a and 24b. Unvulcanized rubber is extruded by the rubber extruder 25, and the unvulcanized rubber is coated on the cord 21 by the die 26 to obtain the rubber-coated cord 10. The rubber coating is usually performed by preheating the cord, and it is preferable that the rubber is preheated by heating the turn rollers 24a and 24b. The rubber-coated cord 10 is guided to the rubber sheet forming device 17 including the cylindrical conveyor 1 and the rotating arm 8 through the tension adjusting device 27. A cylindrical rubber sheet 12 made of a rubber-coated cord is formed by the rubber sheet forming apparatus 17 shown in FIG. 1, and is cut by a cutting tool 14 to become a continuous body of a rubber sheet 15 reinforced with a cord. To the body ply forming drum or the belt forming drum.

  FIG. 4A shows a state in which the cylindrical rubber sheet 12 serving as a body ply material of the radial ply is cut open. In this case, the angle between the cord and the length direction of the rubber sheet is 90 degrees, that is, 90 degrees. The product width R = πD (D is the diameter of the cylindrical conveyor). In this case, the cylindrical conveyor is slightly rotated by the amount for correcting the winding angle of the cord. FIG. B shows a state in which the cylindrical rubber sheet 12 is cut open by the cutting tool 14 by the rotation of the cylindrical conveyor itself, and becomes a continuous body of the rubber sheet 15 reinforced with the cord having the cord arrangement angle α. As shown in FIG. C, the width w of the rubber-coated cord to be supplied, the rotational speed of the rotary arm, m, and the rotational speed of the cylindrical conveyor 1 are determined by n and the like.

  FIG. 5 shows an example in which a twisting machine is used for the feeding machine 31 of the cord 21. The cord 21 wound around the bobbin 23 of the feeding machine 31 passes through the traveler 33 of the ring 32 and is guided through the yarn guide 37. The bobbin 23 is rotated by the drive shaft 34, whereby the cord 21 is twisted by the rotation of the traveler 33. That is, the feeding machine 31 uses a ring twisting machine mechanically as a feeding machine by reversing the flow of the cord, and the turn roller 35a in which the cord 21 is driven while being twisted. , 35b, and a twisted cord 36 is obtained. The twisted cord 36 is led to a rubber coating process or directly to a rotating arm. In the case of a steel cord, this twisting machine can be used as an untwisting machine by rotating in reverse with respect to the twisting direction of the cord, and canceling the twisting applied by a normal rotating arm.

  The specific example which manufactured continuously the sheet | seat with which the code | cord | chord covered with rubber was arranged at right angle using the manufacturing apparatus shown in FIG. A 1670 dtex / 2 polyester cord that has been dipped to obtain adhesion to rubber is fed out and unvulcanized in a blend of natural rubber and synthetic rubber extruded from a 60mmφ rubber extruder into a die Rubber coating is performed by passing through the compounded rubber. The rubber-coated cord passes through a dancer roller that functions as a tension adjusting device, and is guided to a thread winding guide of a rotating arm. The thread winding guide in the rotating arm has a diameter of 20 mmφ and rotates coaxially. Inside the rotation, eight conveyors are arranged in a polygonal column to form a cylindrical conveyor, which runs in the axial direction from the side to which the cord is supplied. The outer diameter of the polygonal column was 124 mm. A rubber-coated cord is continuously wound around the surface of the cylindrical conveyor using a rotating arm and is continuously pressed, so that the rubber sheet reinforced with a cord formed in a cylindrical shape on the cylindrical conveyor exits the cylindrical conveyor. Then, by cutting at a right angle with a cutting tool (razor blade), sheets with a width of 390 mm can be continuously obtained, and a sheet in which the cords are arranged at an angle of 90 degrees with respect to the longitudinal direction of the sheet ( (See FIG. 4A). The rubber sheet in which the cords are arranged at right angles is used in a tire molding machine as a body ply material for an automobile.

  The example of manufacture of the belt material for motor vehicles by a steel cord is shown using the apparatus shown to FIG. 2x2x0.25 steel cord twisted with 0.25mmφ strands plated to obtain adhesion to rubber is passed through the untwisting machine, opposite to the twist applied by rotation of the rotating arm Untwisted and fed out. The cord is passed through an unvulcanized compounded rubber blended with natural rubber and synthetic rubber extruded from a 60 mmφ rubber extruder into a die and covered with rubber. Guided to the pressing tool. The cylindrical conveyor on the inner side of the rotation of the rotary arm was arranged so that the eight conveyors were polygonal columns, and the outer diameter of the polygonal columns was 102 mm. A rubber-coated cord is continuously wound around the surface of the cylindrical conveyor using a rotating arm, so that the rubber sheet reinforced with a cord formed in a cylindrical shape on the cylindrical conveyor is moved up and down at the place where it exits the cylindrical conveyor. Sheets with a width of 160 mm and a cord angle of 30 degrees with respect to the longitudinal direction of the sheet could be continuously obtained by cutting with a cutting tool that pushes with a blade (see FIG. 4B). Since this reinforcing rubber sheet was untwisted with a cord untwisting machine, the sheet was free from curling and other distortions. The sheet in which the cords are arranged obliquely is used in a tire molding machine as an automobile belt material.

  The rubber sheet reinforced with the cord of the present invention is used for a tire body ply sheet, a belt sheet, etc., but is required to have strength in other industrial machines such as air springs, diaphragms, belt conveyors, and flexible containers. It is also used in the field of rubber sheets.

  Sectional drawing of the iron sheet | seat formation apparatus reinforced with the code | cord | chord of this invention.   Sectional drawing in the AA surface of FIG.   In the manufacturing process of the rubber sheet reinforced with the cord of the present invention, an example in which feeding, rubber coating, and a rubber sheet forming apparatus are combined is shown in a side view.   The arrangement | sequence state of the code | cord | chord by the slitting method at the time of manufacturing the rubber sheet reinforced with the code | cord | chord by cutting the cylindrical sheet | seat which consists of the rubber | gum covering cord of this invention is shown.   The side view which shows the example of the drawing machine using the twisting machine of this invention.

Explanation of symbols

1: cylindrical conveyor, 2a, 2b: conveyor belt, 3: gear,
4: shaft, 5: flange, 6a, 6b: bevel gear,
7: Gear, 8: Rotating arm, 9: Gear, 10: Rubber-coated cord,
11: Guide with spool, 12: Cylindrical rubber sheet, 13: Pressing tool,
14: Cutting tool, 15: Rubber sheet reinforced with cord,
16: Rubber-coated cord, 17: Molding device reinforced with cord.
21: Cord, 22: Creel stand, 23: Bobbin,
24a, 24b: Turn roller, 25: Rubber extruder, 26: Die,
27: Tension adjusting device.
31: Feeder, 32: Ring, 33: Traveler, 34: Drive shaft,
35a, 35b: Turn roller, 36: Twisted cord, 37: Yarn guide.

Claims (11)

  A cylindrical conveyor in which the surface of the cylinder continuously moves in the axial direction and a rotating arm that rotates around the axis of the cylinder on the outside of the cylindrical conveyor, and the rubber-coated cord guided to the rotating arm is the cylinder. An apparatus for producing a rubber sheet reinforced with a cord, wherein the apparatus is configured to be continuously spirally wound in contact with each other on the surface of a conveyor.   The cylindrical conveyor of Claim 1 is comprised so that it may rotate centering on the axis | shaft of a cylinder, The cutting tool which cuts out the cylindrical rubber sheet formed by winding a rubber-coated cord around the cylindrical conveyor spirally A rubber sheet reinforced with a cord, wherein the rubber sheet is a continuous body of rubber sheets in which the cord is arranged at a predetermined angle α with respect to the longitudinal direction of the sheet. manufacturing device.   An apparatus for producing a rubber sheet reinforced with a cord, wherein the rotating arm according to claim 1 is installed in multiple stages.   The apparatus for manufacturing a rubber sheet reinforced with a cord according to claim 1, further comprising a pressing tool that presses the cylindrical rubber sheet formed by winding the rubber-coated cord around the cylindrical conveyor. .   A rubber coating device is provided to coat the rubber by passing the rubber coated die that covers the rubber extruded from the rubber extruder by the cord that has been subjected to the adhesive treatment to the rubber fed from the reel. An apparatus for manufacturing a rubber sheet reinforced with a cord, wherein the apparatus is configured to be guided to the rotating arm according to claim 1 while being manufactured.   An apparatus for producing a rubber sheet reinforced with a cord, wherein a cord tension adjusting device is provided between the rubber coating device and the rotating arm according to claim 5.   The apparatus for producing a rubber sheet reinforced with a cord, further comprising a twisting machine or a synthesizing machine in which the cord guided to the rotating arm according to claim 1 is fed while being twisted.   The cord according to claim 1, wherein the cord is a steel cord, and has a twister that is unwound so as to cancel the twist generated by the rotation of the rotating arm, and is unwound from the reel. Rubber sheet manufacturing equipment.   The rubber-coated cords led to a rotating arm that rotates around the axis of the cylinder are continuously brought into contact with each other on the surface of the cylindrical conveyor on which the surface of the cylinder continuously moves in the axial direction. A method for producing a rubber sheet reinforced with a cord, wherein the rubber sheet is spirally wound.   The cylindrical rubber sheet formed by winding the rubber-coated cord around the cylindrical conveyor by rotating the cylindrical conveyor of claim 9 around the axis of the cylinder is spirally formed by a cutting tool. A method for producing a rubber sheet reinforced with a cord, characterized by producing a rubber sheet in which the cord is arranged at a predetermined angle α with respect to the longitudinal direction of the sheet by cutting.   A method for producing a rubber sheet reinforced with a cord, characterized in that a rubber-coated cord is wound in a multistage manner on a cylindrical conveyor by providing the rotating arm according to claim 9 in a multistage manner.

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