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Toyo Tire & Rubber : Patent Issued for Conveying Method and Conveying Device of Rubber Member (USPTO 9938091)

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04/19/2018 | 09:30pm CEST

By a News Reporter-Staff News Editor at Life Science Weekly -- A patent by the inventors Miyamoto, Ryoshi (Osaka, JP); Hashimoto, Yoshiki (Osaka, JP), filed on February 3, 2015, was published online on April 10, 2018, according to news reporting originating from Alexandria, Virginia, by NewsRx correspondents (see also Toyo Tire & Rubber Co. Ltd.).

Patent number 9938091 is assigned to Toyo Tire & Rubber Co. Ltd. (Osaka-shi, JP).

The following quote was obtained by the news editors from the background information supplied by the inventors: "Field of the Invention

"The present invention relates to a conveying method and a conveying device of a rubber member for receiving the rubber member which is supplied from a supply device and is curved, and transferring the received rubber member to a supply receiving device in a curved state.

"Description of the Related Art

"In manufacturing of a pneumatic tire, there has been frequently employed a method which linearly extrudes a bead filler having a predetermined cross sectional shape and winds the bead filler to an outer peripheral side of a bead wire so as to bond end portions at the time of molding the bead filler having an annular shape (for example, Patent Document 1). However, since tensile force is generated due to difference between inner and outer circumferences of the bead filler at the time of winding around the bead wire, there have been problems that the outer peripheral portion bends or becomes thinner, the bonded portion peels or a surplus cut rubber is generated.

"In order to solve the problems, Patent Document 2 is structured such that internal stress is reduced by spirally winding a linearly extruded bead filler and cooling the wound bead filler by cooling water. However, since the bead filler is cooled while being wound between two drums which are arranged side by side in the Patent Document 2, the bead filler is extended between two drums.

"Therefore, at the time of molding the annular bead filler, it is preferable to employ a method which annularly molds a bead filler extruded from an extruding device in a state in which the bead filler is curved so as to have a desired curvature, while keeping the curvature, in place of a method which annularly curves a bead filler extruded linearly from the extruding device. However, it has been hard to convey the bead filler which is curved and extruded to a molding machine while keeping the curvature."

In addition to the background information obtained for this patent, NewsRx journalists also obtained the inventors' summary information for this patent: "Accordingly, an object of the present invention is to provide a conveying method and a conveying device of a rubber member which can convey the rubber member which is supplied from a supply device and is curved, to a supply receiving device while keeping a curvature.

"The object mentioned above can be achieved by the following present invention.

"More specifically, the conveying method of a rubber member according to the present invention is a conveying method of a rubber member for receiving the rubber member which is supplied from a supply device and is curved, and transferring the received rubber member to a supply receiving device in a curved state, the method including the steps of:

"winding the rubber member from a leading end portion onto a mounting surface of a rotary table by forwardly rotating the rotary table and receiving the rubber member from the supply device in a state in which a rear end portion of the rubber member is not in contact with the mounting surface;

"moving the rotary table from a receiving position to a transferring position; and

"winding back the rubber member from the rear end portion so as to transfer the rubber member to the supply receiving device by reversely rotating the rotary table.

"Since the conveying method of a rubber member according to the present invention winds up the curved rubber member supplied from the supply device onto the mounting surface of the rotary table by forwardly rotating the rotary table, it is possible to receive the curved rubber member from the supply device while keeping the curvature of the curved rubber member. Since the rubber member received from the supply device is moved from the receiving position to the transferring position together with the rotary table, it is possible to convey the rubber member received from the supply device to the supply receiving device in the curved state. Since the rubber member on the mounting surface is wound back so as to be transferred to the supply receiving device by reversely rotating the rotary table at the transferring position, it is possible to transfer the curved rubber member to the supply receiving device while keeping the curvature thereof. Further, since it is possible to smoothly transfer the rubber member by receiving the rubber member in a state in which the rear end portion of the rubber member is not in contact with the mounting surface at the time of receiving the rubber member from the supply device, and transferring the rubber member from the rear end portion of the rubber member to the supply receiving device at the time of transferring the rubber member to the supply receiving device, it is possible to appropriately keep the curvature of the rubber member. As a result, according to the conveying method of a rubber member of the present invention, it is possible to convey the rubber member which is supplied from the supply device and is curved to the supply receiving device while keeping the curvature of the rubber member.

"In the conveying method of a rubber member according to the present invention, it is preferable to make the rear end portion not in contact with the mounting surface by sucking the rear end portion by a first suction pad which outwardly protrudes out of the mounting surface, in the receiving step, and to release the rear end portion by cancelling the suction by the first suction pad in the transferring step.

"According to the structure, it is possible to make the rear end portion of the rubber member not in contact with the mounting surface while securely retaining the rear end portion at the time of receiving the rubber member, and it is possible to easily transfer the rear end portion of the rubber member to the supply receiving device at the time of transferring the rubber member.

"In the conveying method of a rubber member according to the present invention, it is preferable to retract and accommodate the first suction pad in the rotary table, in the transferring step.

"According to the structure, it is possible to prevent the first suction pad from interfering with the supply receiving device at the time of transferring the rubber member to the supply receiving device.

"The object mentioned above can be achieved by the following present invention.

"More specifically, the conveying device of a rubber member according to the present invention is a conveying device of a rubber member for receiving the rubber member which is supplied from a supply device and is curved, and transferring the received rubber member to a supply receiving device in a curved state, the device including:

"a rotary table having a mounting surface on which the rubber member can be mounted;

"a first suction pad which can suck the rubber member by protruding outward from the mounting surface;

"a moving mechanism which can move the rotary table between a receiving position and a transferring position; and

"a control device controlling the first suction pad so as to receive the rubber member in a state in which a rear end portion of the rubber member is not in contact with the mounting surface by sucking the rear end portion of the rubber member by the first suction pad at the receiving position, and transfer the rubber member by cancelling the suction by the first suction pad so as to release the rear end portion at the transferring position.

"Since the conveying device of a rubber member according to the present invention is provided with the rotary table having the mounting surface on which the rubber member can be mounted, and the rubber member which is supplied from the supply device and is curved, onto the mounting surface by forwardly rotating the rotary table, it is possible to receive the curved rubber member from the supply device while keeping the curvature of the rubber member. Further, the conveying device is provided with the moving mechanism which can move the rotary table between the receiving position and the transferring position, and it is possible to convey the rubber member which is received from the supply device, to the supply receiving device in the curved state. It is possible to transfer the curved rubber member to the supply receiving device while keeping the curvature of the rubber member, by reversely rotating the rotary table at the transferring position so as to rewind the rubber member on the mounting surface. Further, since it is possible to smoothly transfer the rubber member by receiving the rubber member in a state in which the rear end portion of the rubber member wound up onto the mounting surface is not in contact with the mounting surface by sucking the rear end portion by the first suction pad, at the time of receiving the rubber member from the supply device, and transferring the rubber member from the rear end portion of the rubber member to the supply receiving device by cancelling the suction by the first suction pad, at the time of transferring the rubber member to the supply receiving device, it is possible to appropriately keep the curvature of the rubber member. As a result, according to the conveying device of a rubber member of the present invention, it is possible to convey the rubber member which is supplied from the supply device and is curved to the supply receiving device while keeping the curvature of the rubber member.

"In the conveying device of a rubber member according to the present invention, it is preferable that the first suction pad can be displaced between a protruding position at which the first suction pad protrudes out of the mounting surface, and a retraction position at which the first suction pad is retracted from the protruding position.

"According to the structure, it is possible to prevent the first suction pad from interfering with the supply receiving device at the time of transferring the rubber member to the supply receiving device.

"In the conveying device of a rubber member according to the present invention, the rotary table is preferably provided with a second suction pad arranged at a position which is different in a circumferential direction from the first suction pad on the mounting surface.

"According to the structure, it is possible to prevent the rubber member from being deviated from a place on the mounting surface by sucking the rubber member by the second suction pad. Further, for example, even in the case that the mounting surface of the rotary table is stood in a vertical direction at the time of transferring the rubber member to the supply receiving device, the rubber member can be prevented from being away from the mounting surface by sucking the rubber member by the second suction pad."

URL and more information on this patent, see: Miyamoto, Ryoshi; Hashimoto, Yoshiki. Conveying Method and Conveying Device of Rubber Member. U.S. Patent Number 9938091, filed February 3, 2015, and published online on April 10, 2018. Patent URL: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=9938091.PN.&OS=PN/9938091RS=PN/9938091

Keywords for this news article include: Asia, Japan, Business, Transferrin, Beta-Globulins, Blood Proteins, Carrier Proteins, Acute-Phase Proteins, Iron-Binding Proteins, Toyo Tire & Rubber Co. Ltd..

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2018, NewsRx LLC

(c) 2018 NewsRx LLC, source Health Newsletters

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