Abstract: A kneading apparatus includes a barrel having a cylindrical chamber; a screw assembly rotating in the chamber so that a material to be kneaded is extruded in the axial direction by the rotation, the screw assembly including a screw section having helical blades and a kneading blade section in order to allow the material to flow into the clearance between the inner wall of the chamber and the kneading blade section, and to apply shearing forces to the material; a metering feeder for feeding the material at a substantially constant volumetric or gravimetric rate into the chamber; an injecting device for injecting a heat-removing medium into the chamber; and a discharging device for separating the heat-removing medium from the material and discharging the heat-removing medium from the chamber. A kneading method using the kneading apparatus is also disclosed.

Abstract: A batch mixer having a barrel which forms a cylindrical sealed chamber having a section consisting of two mutually communicated circles, and two rotors housed in the chamber to mix a mixing material by rotation, at least one of the inner wall of the barrel and the surface of the rotor having a plurality of recessed parts or protruding parts. The recessed parts or protruding parts are formed of grooves or projections extended in the direction crossing to the rotating direction of the rotor rotated in the chamber to mix the material. According to this structure, a batch mixer excellent in the controllability of material temperature during mixing can be provided.

Abstract: A kneading apparatus includes a barrel having a cylindrical chamber; a screw assembly rotating in the chamber so that a material to be kneaded is extruded in the axial direction by the rotation, the screw assembly including a screw section having helical blades and a kneading blade section in order to allow the material to flow into the clearance between the inner wall of the chamber and the kneading blade section, and to apply shearing forces to the material; a metering feeder for feeding the material at a substantially constant volumetric or gravimetric rate into the chamber; an injecting device for injecting a heat-removing medium into the chamber; and a discharging device for separating the heat-removing medium from the material and discharging the heat-removing medium from the chamber. A kneading method using the kneading apparatus is also disclosed.

Abstract: A kneading apparatus includes a barrel having a cylindrical chamber; a screw assembly rotating in the chamber so that a material to be kneaded is extruded in the axial direction by the rotation, the screw assembly including a screw section having helical blades and a kneading blade section in order to allow the material to flow into the clearance between the inner wall of the chamber and the kneading blade section, and to apply shearing forces to the material; a metering feeder for feeding the material at a substantially constant volumetric or gravimetric rate into the chamber; an injecting device for injecting a heat-removing medium into the chamber; and a discharging device for separating the heat-removing medium from the material and discharging the heat-removing medium from the chamber. A kneading method using the kneading apparatus is also disclosed.

Abstract: A kneading apparatus includes a barrel having a cylindrical chamber; a screw assembly rotating in the chamber so that a material to be kneaded is extruded in the axial direction by the rotation, the screw assembly including a screw section having helical blades and a kneading blade section in order to allow the material to flow into the clearance between the inner wall of the chamber and the kneading blade section, and to apply shearing forces to the material; a metering feeder for feeding the material at a substantially constant volumetric or gravimetric rate into the chamber; an injecting device for injecting a heat-removing medium into the chamber; and a discharging device for separating the heat-removing medium from the material and discharging the heat-removing medium from the chamber. A kneading method using the kneading apparatus is also disclosed.

Abstract: Each mixing rotor for a batch mixer is rotatably insertable into a mixing chamber such that tip clearances are defined between tips of mixing blades and an inner surface of a mixing chamber and is provided on its outer circumferential surface with a plurality of mixing blades for imparting shearing forces to a material to be mixed by causing the material to pass through the tip clearances. The plurality of mixing blades include a nonlinear blade which is substantially nonlinear from a start point to a terminal point in a development of the mixing rotor developed into a plane about its longitudinal axis, and other linear blades which are linear in the development and whose helix angle to the longitudinal axis of the mixing rotor is set at 15 to 35°. An appropriate mixing control capable of realizing both sufficient mixing and sufficient dispersion can be executed by mixing and dispersing the material in a well-balanced manner by means of the mixing rotor.

Abstract: A batch mixer having a barrel which forms a cylindrical sealed chamber having a section consisting of two mutually communicated circles, and two rotors housed in the chamber to mix a mixing material by rotation, at least one of the inner wall of the barrel and the surface of the rotor having a plurality of recessed parts or protruding parts. The recessed parts or protruding parts are formed of grooves or projections extended in the direction crossing to the rotating direction of the rotor rotated in the chamber to mix the material. According to this structure, a batch mixer excellent in the controllability of material temperature during mixing can be provided.

Abstract: A kneading apparatus includes a barrel having a cylindrical chamber; a screw assembly rotating in the chamber so that a material to be kneaded is extruded in the axial direction by the rotation, the screw assembly including a screw section having helical blades and a kneading blade section in order to allow the material to flow into the clearance between the inner wall of the chamber and the kneading blade section, and to apply shearing forces to the material; a metering feeder for feeding the material at a substantially constant volumetric or gravimetric rate into the chamber; an injecting device for injecting a heat-removing medium into the chamber; and a discharging device for separating the heat-removing medium from the material and discharging the heat-removing medium from the chamber. A kneading method using the kneading apparatus is also disclosed.

Abstract: Each mixing rotor for a batch mixer is rotatably insertable into a mixing chamber such that tip clearances are defined between tips of mixing blades and an inner surface of a mixing chamber and is provided on its outer circumferential surface with a plurality of mixing blades for imparting shearing forces to a material to be mixed by causing the material to pass through the tip clearances. The plurality of mixing blades include a nonlinear blade which is substantially nonlinear from a start point to a terminal point in a development of the mixing rotor developed into a plane about its longitudinal axis, and other linear blades which are linear in the development and whose helix angle to the longitudinal axis of the mixing rotor is set at 15 to 35°. An appropriate mixing control capable of realizing both sufficient mixing and sufficient dispersion can be executed by mixing and dispersing the material in a well-balanced manner by means of the mixing rotor.

Abstract: An enclosed kneading apparatus which can smoothly knead and disperse kneaded products of various kneading conditions without the maintenance of a rotor moving mechanism for a first and second rotors and the operation which sacrifices the handling capacity of the kneading apparatus and at the same time, prevent an excessive increase in the temperature of the kneaded products. In the apparatus, the kneaded product of a desired kneading state is obtained by flowing a kneading object in tip clearances between the inner wall of a chamber and a first and second rotors while rotating the first and second rotors in the chamber, and by imparting a shearing force to disperse the kneading object. The respective first and second rotors are provided with three long wings in helical fashion each having a plurality of tip portions for providing a plurality of three tip clearances in the axial direction.

Abstract: A hermetically closed kneading apparatus includes a casing member (1) having a chamber (2) and one pair of counter rotating, parallel rotors (3) (4). Each of rotor has three long blades (18) (19) (20) and of which the central axes (17a) (17b) of the rotors are set apart from each other so that the long blades may not mesh with each other. Each of the long blades extends spirally around the central axis (17a) (17b) of the rotors and are set apart from each other by an equivalent angle in a circumferential direction of the rotor. Each rotor has a profile corresponding to any one of the following features: (a) the profile is almost triangular. (b) the profile includes a straight line in each non-action (22) surface of the rear surface (26) of each blade with respect to a rotation direction, the straight line starts from edge (18a) of a tip (21) of each blade (18).

Abstract: An internal mixer and controller enables the phase difference and the speed ratio between two rotors to be changed without stopping the operation of the mixer. The internal mixer comprises: nonintermeshed first and second rotors disposed in a mixing chamber; first and second drive units; first and second phase measuring devices; first and second speed measuring devices; and a control unit for controlling the first and second drive units on the basis of signals from the first and second speed measuring devices and signals from the first and second phase measuring devices. The control unit controls the two rotors so as to synchronously rotate at the same speed on the basis of the signals from the speed measuring devices when the two rotors fixedly rotate at the same speed.

Abstract: An internal mixer having a floating weight disposed in contiguous with an internal mixer main body and made elevatable in a hopper to which a material to be mixed is charged, wherein a hydraulic cylinder for elevating the floating weight is disposed in contiguous with the internal mixer main body, a pneumatic/hydraulic pressure conversion means for pressure conversion between a hydraulic side and a pneumatic side is disposed separately from the internal mixer main body, and the hydraulic side of the hydraulic cylinder for lowering the floating weight is connected with the hydraulic side of the pneumatic/hydraulic pressure conversion means. The reliability of the internal mixer can be improved while making the structure compact and facilitating the maintenance operation.

Abstract: A tire vulcanizing system capable of performing high accuracy transportation of a green tire by a loader and of performing high accuracy transportation of a vulcanized tire by an unloader including a group of tire vulcanizing presses having many tire vulcanizing presses 1 arranged in a row and manipulators 2 arranged along the group of the tire vulcanizing presses in such a way that they may freely run. The tire vulcanizing presses 1 are constructed such that the upper and lower molds 80, 81 are stored between the engaging or disengaging upper and lower press members in such a manner that they may be fastened with the green tire mounting table 7 and the post-cure inflator 8 arranged around them.