초록 ▼

A molding machine for producing products of a rubber-like resilient material, particularly oil seals in which a first mold part is stationarily supported in axial spaced relation to a main base, a base between the main base and first mold part is axially movable toward and away from the first mold p

A molding machine for producing products of a rubber-like resilient material, particularly oil seals in which a first mold part is stationarily supported in axial spaced relation to a main base, a base between the main base and first mold part is axially movable toward and away from the first mold part and supports a second complementary mold part, a holder between and axially spaced from the first and second mold parts is mounted for limited axial movement and rotary movement in a plane parallel to the first and second mold parts, with the holder carrying two diametrically opposite further mold parts spaced apart an equal distance from the axis of the rotary movement and one of the further mold parts being in substantially registry with the first and second mold parts so that movement of the base relative to the holder brings the second mold part into operative relation to the one further mold part and continued movement of the movable base moves the holder toward the first mold part until the first mold part, one further mold part and second mold part are assembled to provide a molding space therein for receiving the molding material. Means are provided for introducing a reinforcing ring into the other further mold part of the holder prior to its movement to the position occupied by the one further mold part during molding and to remove the completed article from the one further mold part when it occupies the position of the other further mold part during molding. In addition, means are provided for removing the molding flash after the mold opening and for transporting the flash to discharge means. Also, means are employed to retain the two further mold parts at diametrically opposite points in the holder as well as prevent rotation and tilting of such mold parts relative to the holder.

대표청구항 ▼

A molding machine for producing products of a rubber-like resilient material, such as oil seals, including a main base, a first mold part stationarily supported in axial spaced relationship to the main base and substantially parallel to the main base, a second base between the main base and the firs

A molding machine for producing products of a rubber-like resilient material, such as oil seals, including a main base, a first mold part stationarily supported in axial spaced relationship to the main base and substantially parallel to the main base, a second base between the main base and the first mold part movable axially toward and away from the first mold part, a second mold part supported by the second movable base, a holder located between and axially spaced from the first mold part and second movable base, means mounting the holder for limited axial movement and rotary movement in a plane parallel to the second movable base and first mold part, said holder carrying at least two diametrically opposite further mold parts spaced apart an equal distance from the axis of rotary movement of the holder, one of the further mold parts, during a molding cycle, being in substantial registry with the first and second mold parts, means for moving the second movable base towards and away from the holder, and means for introducing a molding material into the first mold part, the arrangement being such that movement of the second movable base towards the holder initially precisely positions the second movable base relative to the holder and the second mold part into operative relationship to the one further mold part, and continued movement of the second movable base moves the holder toward the first mold part until the first mold part and at least the one further mold part are assembled to provide a molding space therein for receiving molding material from the first mold part.