摘要:
A method and an apparatus for vulcanizing an elastomer product, such as automobile tires, wherein the elastomer product is placed in a vulcanizing chamber in a mold steam at an elevated pressure is supplied to the vulcanizing chamber to heat and pressurize the elastomer product until the elastomer product reaches a prespecified temperature or for a prespecified period of time, the steam supply is stopped and a pressurizing gas, at a pressure not lower than the steam supply pressure, is supplied to the vulcanizing chamber until the end of a heating period, said steam being blown in and supplied from an upper position of the center of the vulcanizing chamber in a horizontal direction or in an inclined downward direction, said steam being blown in and supplied from a lower position of the center of the vulcanizing chamber toward an upper region of the vulcanizing chamber. The method and apparatus prevent a large temperature difference within the elastomer product and provide uniform vulcanizing product uniformity, shortening of the vulcanizing time, improvement of productivity, and reduction of energy loss.
摘要:
After loading a green tire in a tire vulcanizing machine and before shaping, bead portions of the green tires are centered relative to bead rings of upper and lower metal molds and are sequentially inserted into the bead rings precisely in parallel thereto by the same extendable/retractable sectors and chucks which are movable vertically. An apparatus preferable for practicing the aforementioned method includes a plurality of such sectors for centering and holding a bead portion of the green tire, slide and linkage mechanisms for extending and retracting chucks to which the sectors are mounted, and a cylinder mechanism for vertically moving the chucks so as to insert the bead portion of the green tire centered and held by the sectors into a bead ring of a tire metal mold.
摘要:
A vulcanizing apparatus having penetrating passages connected and communicated with a jacket portion of a mold member. An upper open end portion of one of the penetrating passages is connected to a steam inlet pipe while an upper open end portion of the other penetrating passage is connected to a steam outlet pipe. The connections and communications of the jacket portion with the steam inlet and outlet pipes can be simultaneously and efficiently completed in a single operation. Inner tubes are slidably disposed along the penetrating passages and pressed against the connecting surface of the mold, and appropriate pressure is applied on the seal packing member on the connecting surface independent from the clamping force of the upper mold in order to ensure reliable sealing.
摘要:
An improved tire loading mechanism of a tire cooler in a tire vulcanizing machine is proposed to save time and human labor, to prevent jamming of a screw portion and to enhance economy of the machine. The tire loading mechanism is composed of a main shaft pivotably supported from a rotary table and rotationally driven by a drive source, an outer cylinder mounted to the main shaft so as to be relatively displaceable in an axial direction via screw threads and having an upper bead ring support flange at its lower end, and a housing mounted to the lower end of the main shaft via disengageably fitting claws and having a lower bead ring support flange at its upper end. A disengageable fitting rod for stopping rotation of the outer cylinder is provided on the rotary table at a position opposed to a vertical groove on the surface of the outer cylinder. An arrangement provided between the main shaft and the outer cylinder fixedly secures the outer cylinder to the main shaft upon rotational air cooling of the tire. Such arrangement essentially includes an elastic ring on the outer circumference of the main shaft which is pneumatically expanded to be pressed against the inner circumference of the outer cylinder.
摘要:
The known center mechanism in a tire vulcanizing machine is improved in that the center mechanism comprises condensate ejection means which can be accommodated within a member disposed in the center mechanism and which can be moved between the member and a condensate stagnating portion, a sleeve movable vertically within an upper ring by an operation of a pneumatic cylinder and adapted to be engaged with a part of the upper ring at its end portion to restrain a raised position of the upper ring, whose fixed height with respect to a rod of the pneumatic cylinder is variable, and a rotary member for restraining the position of the lower ring, whose engagement length with a receiving plate for the lower ring can be varied by continuous rotation thereof, and which can be fitted to and disengaged from a support member therefor through rotation by a predetermined amount.
摘要:
A separator for batteries according to the present invention includes a multilayer porous film having a resin porous film containing a thermoplastic resin as a main component and a heat resistant porous layer containing heat resistant particles as a main component, and the heat resistant porous layer has a thickness of 1 to 15 μm, and the 180° peel strength between the resin porous film and the heat resistant porous layer is 0.6 N/cm or more.
摘要:
An electrochemical device of the present invention includes a positive electrode, a negative electrode, a non-aqueous electrolyte, and a separator. The separator includes a first porous layer composed mainly of a thermoplastic resin and a second porous layer composed mainly of insulating particles with a heat-resistant temperature of 150° C. or higher. The first porous layer is disposed to face the negative electrode.
摘要:
A controller for winding an unvulcanized rubber sheet suitable for the formation of tires, transmitting belts and the like comprises a cylindrical drum rotated by a motor for winding the unvulcanized rubber sheet thereon, a conveyer for feeding the unvulcanized rubber sheet on the drum, a data processor for calculating a ratio of peripheral velocities of the drum and the feeding conveyer and a feeding quantity of the unvulcanized rubber sheet on the basis of previously inputted data and a sequence control unit responsive to an output of the data processor for controlling the sequence of operation of the movable portions of the controller, i.e. the sequence according to which each element of the controller for winding the unvulcanized rubber sheet and the motors are operated, which sequence is established according to a predetermined order.
摘要:
The present invention provides a lithium secondary battery using a separator including a porous film formed by binding inorganic oxide particles together with a binder. The inorganic oxide particles are treated so that an amount of alkali metal elements eluted therefrom when they are immersed in ion exchange water is reduced to 1000 ppm or less. As a result, it is possible to provide a lithium secondary battery with a high degree of reliability, whose characteristics deteriorate less when it is used or stored for an extended period.
摘要:
The present invention provides a lithium secondary battery using a separator including a porous film formed by binding inorganic oxide particles together with a binder. The inorganic oxide particles are treated so that an amount of alkali metal elements eluted therefrom when they are immersed in ion exchange water is reduced to 1000 ppm or less. As a result, it is possible to provide a lithium secondary battery with a high degree of reliability, whose characteristics deteriorate less when it is used or stored for an extended period.