Teijin Seiki Co., Ltd.

Tetsuya Watanabe

Hiroki Mori

Chohei Okuno

Shunzo Naito

Yoshihide Nishimura

Takahiro Maekawa

Takashi Ikeuchi

Herein disclosed is a robot arm mechanism comprising a first arm link mechanism and a second arm link mechanism, a robot arm driving mechanism for driving the first arm link mechanism and the second arm link mechanism, and a link retaining mechanism for pivotably retaining the first arm link mechanism and the second arm link mechanism, in which a third arm link and a fourth arm link of the first arm link mechanism are kept forward in a first rotation direction, in which the first arm link mechanism and the second arm link mechanism are extended, thereby enabling to prevent the quadric crank chain constituting the robot arm mechanism from being flattened out while the first arm link mechanism and the second arm link mechanism are extended, and improving resistance to deformation, in comparison with the conventional robot arm mechanism.

Robot arm mechanism

Herein disclosed is a shaft sealing apparatus which comprises a vacuum casing formed with a vacuum chamber, a driving shaft having an outer cylindrical surface and movably extending in the vacuum chamber of the vacuum casing, and a sealing ring in the form of an annular ring shape and including a sealing lip held in contact with the outer cylindrical surface of the driving shaft, an annular spring member operative to impart a force to the sealing lip to ensure that the sealing lip is held in tight contact with the outer cylindrical surface of the driving shaft, and a peripheral portion radially outwardly extending from the sealing lip, in which the outer cylindrical surface of the driving shaft is smaller in surface roughness Ra than 0.1 (&#x3bc;m).

Shaft sealing assembly for vacuum processing apparatus

Shaft sealing apparatus

Herein disclosed is a robot arm mechanism comprising: a first handling member for supporting and handling a first object; a second handling member for supporting and handling a second object; a first robot arm including a first arm link and a second arm link, the first end portion of the second arm link being pivotably connected to the second end portion of the first arm link, and the second end portion of the second arm link being connected to the first handling member to allow the first handling member to support the first object in a stable condition; a second robot arm including a first arm link and a second arm link, the first end portion of the second arm link being pivotably connected to the second end portion of the first arm link, the second arm link being inclined with respect to the second arm link of the first robot arm at a preset angle defined between the central line of the second arm link of the second robot arm and the central line of the second arm link of the first robot arm, and the second end portion of the second arm link being connected to the second handling member to allow the second handling member to support the second object in a stable condition; a robot arm moving mechanism for allowing one of the first arm links and of the first and second robot arms to be angularly moved with respect to the other of the first arm links of the first and second robot arms; and an angle keeping mechanism for keeping substantially fixed the preset angle defined between the central line of the second arm link of the second robot arm and the central line of the second arm link of the first robot arm as one of the first arm links of the first and second robot arms is angularly moved with respect to the other of the first arm links of the first and second robot arms.

Robot arm mechanism and robot apparatus

A traction drive speed reducer which comprises circumscribed axes A and B, a plurality of intermediate axes A and B arranged contacting around the outer periphery of the circumscribed axes, and inscribed cylinders A and B inscribing the outer periphery of the intermediate axes, and in which a supporting member to rotatably support the intermediate axes is fixed, a drive motor is connected to at least one of the plurality of intermediate axes, and an output is taken from the circumscribed axis having the larger diameter than the outer diameter of the intermediate axis.

Traction drive speed reducer, conveyance apparatus using traction drive speed reducer, and arrangement of two-axis output encoder in conveyance apparatus

A robot arm mechanism includes a handling member for supporting and handling an object, a robot arm made up of a plurality of links, and a robot arm driving mechanism for driving the robot arm to assume its contracted and extended position. The robot arm comprises first and second arm links, a link retaining mechanism pivotably retaining the first and second arm links and a link operating mechanism to operate one of the first and second arm links by a motion of the other of the first and second arm links. The link operating mechanism comprises a crank, a coupling link and a connecting link. The crank integrally connected to the coupling link is pivotably connected to one of the first and second arms and to the link retaining mechanism. The connecting link is pivotably connected to the other of the first and second arms. This leads to the advantage that the robot arms can be contracted and extended and rotated by only two electric motors.

An apparatus and method for threading a yarn onto a draw texturing machine comprising a main frame ( ) provided with twisting devices ( ) and second heaters ( ) and a winding frame ( ) provided with winding devices ( ) are disposed sandwiching an operator's aisle ( ) therebetween. A yarn (Y) leaving the second heater is guided along the operator's aisle to the winding device mounted on the winding frame. The second heater ( ) has a yarn threading slit ( ) formed therein, and a guiding pipe ( ) having a spiral cross section and yarn disengaging slit ( ) formed therein is disposed adjacent to the yarn threading slit ( ). Along the operator's aisle ( ), an extendable yarn guide pipe ( ) and a fourth movable yarn feed roller device ( ) are disposed. A yarn feed tube ( ) provided with a yarn feed nozzle ( ) is disposed between the extended end of the yarn guide pipe ( ) and the winding device ( ). The apparatus and method of the invention allows an operator to thread the yarn around the operator's aisle without bending.

Threading apparatus and threading method in a textile machine

In a relaxation-heating method and an apparatus therefor, relaxation-heating is performed by a heating apparatus which is provided between a yarn supply roller ( ) and a take-up roller ( ) having a speed lower than that of the supply roller ( ) and which is constituted by a heating roller ( ) and an auxiliary bobbin ( ). In the relaxation-heating method and an apparatus therefor, the size is compact, the heat conductivity is high and yarn can be made to run at a high speed.

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Tsu, Japan

Tetsuya Watanabe