Abstract:
A sheet forming apparatus includes a first roll, a second roll configured to sandwich molten resin extruded from a die in cooperation with the first roll, a coupling member provided to be revolvable around a rotation center axis of the second roll, a third roll provided rotatably on the coupling member and configured to sandwich the resin conveyed along an outer periphery of the second roll in cooperation with the second roll, and a coupling member supporter configured to support the coupling member at an intermediate part of the coupling member so as to allow the coupling member to revolve.
Abstract:
A sheet/film molding apparatus includes: a main roll sandwiches and presses, with a touch roll, a resin molten sheet and conveys the sandwiched and pressed resin sheet; and a separating roll separates the resin sheet from an outer peripheral surface of the main roll and conveys the resin sheet. The separating roll has a rubber roll and a metal elastic external cylinder having the rubber roll housed therein and being eccentrically positioned to the rubber roll and thin and easily elastically deformed. Cooling water is supplied between the rubber roll of the separating roll and the metal elastic external cylinder. The resin sheet between the main roll and the metal elastic external cylinder is cooled by allowing the rubber roll to make pressure contact with an inner peripheral surface thereof. The separating roll separates the resin sheet from the outer peripheral surface of the main roll.
Abstract:
Disclosed is a touch roll (211) including: a center rotary shaft (20); fixed end plates (28, 29) concentrically disposed in two places which are away from each other in an axial direction of the center rotary shaft; an external cylinder (40) made of a metal-made thin film and rotatably supported, at two ends thereof, by the respective fixed end plates, the external cylinder being concentric with the center rotary shaft; and multiple rolling rubber rolls (70) each rotatably supported, at two ends thereof, by the respective fixed end plates, the plurality of rolling rubber rolls being in sliding contact with an outer peripheral surface of the center rotary shaft, and being in sliding contact with an inner peripheral surface of the external cylinder. In the touch roll, the rolling rubber rolls divide an annular space between the external cylinder and the center rotary shaft into multiple heating medium chambers arranged in a circumferential direction of the touch roll; and the rolling rubber rolls are configured in a way that each of the multiple heating medium chambers is filled with a heating medium.
Abstract:
A sheet or film-forming roll 10 includes an inner cylinder member 20 having axial parts 21, 22 provided on both sides thereof and rotatably supported by bearing parts 26, 27 through the axial parts 21, 22, a rubber roll 40 fitted to an outer circumferential surface of the inner cylinder member 20, eccentric side plates 53, 54 rotatably fitted to the axial parts 21, 22 of the inner cylinder member 20 respectively, and an elastic outer cylinder member 50 rotatably supported by the eccentric side plates 53, 54. The elastic outer cylinder member 50, which is provided with a thin-walled structure and made from metal, has an inner diameter larger than an outer diameter of the rubber roll 40 to accommodate the rubber roll 40 in an interior 68 thereof, and has inner circumferential surface 50A coming into contact with an outer circumferential surface 40A of the rubber roll 40.
Abstract:
A sheet or film-forming roll 10 includes an inner cylinder member 20 having axial parts 21, 22 provided on both sides thereof and rotatably supported by bearing parts 26, 27 through the axial parts 21, 22, a rubber roll 40 fitted to an outer circumferential surface of the inner cylinder member 20, eccentric side plates 53, 54 rotatably fitted to the axial parts 21, 22 of the inner cylinder member 20 respectively, and an elastic outer cylinder member 50 rotatably supported by the eccentric side plates 53, 54. The elastic outer cylinder member 50, which is provided with a thin-walled structure and made from metal, has an inner diameter larger than an outer diameter of the rubber roll 40 to accommodate the rubber roll 40 in an interior 68 thereof, and has inner circumferential surface 50A coming into contact with an outer circumferential surface 40A of the rubber roll 40.
Abstract:
A sheet or film-forming roll 10 includes an inner cylinder member 20 having axial parts 21, 22 provided on both sides thereof and rotatably supported by bearing parts 26, 27 through the axial parts 21, 22, a rubber roll 40 fitted to an outer circumferential surface of the inner cylinder member 20, eccentric side plates 53, 54 rotatably fitted to the axial parts 21, 22 of the inner cylinder member 20 respectively, and an elastic outer cylinder member 50 rotatably supported by the eccentric side plates 53, 54. The elastic outer cylinder member 50, which is provided with a thin-walled structure and made from metal, has an inner diameter larger than an outer diameter of the rubber roll 40 to accommodate the rubber roll 40 in an interior 68 thereof, and has inner circumferential surface 50A coming into contact with an outer circumferential surface 40A of the rubber roll 40.
Abstract:
Disclosed is a sheet film forming roll (10) including: a center rotary shaft (20); fixed end plates (28, 29) disposed in two locations which are away from each other in an axial direction of the center rotary shaft (20), respectively; an external cylinder (40) made of a metal thin film, two ends of the external cylinder being rotatably supported by the fixed end plates, respectively; and multiple rolling rubber rolls (70), two ends of each rolling rubber roll being rotatably supported by the respective fixed end plates, the rolling rubber rolls being in sliding contact with an outer peripheral surface of the center rotary shaft, and the rolling rubber rolls being in sliding contact with an inner peripheral surface of the external cylinder. The rolling rubber rolls divide an annular space between the external cylinder and the center rotary shaft into multiple heating medium chambers arranged in a circumferential direction of the sheet film forming roll. A heating medium is configured to be filled in each of the multiple heating medium chambers. Out of the heating medium chambers, at least a heating medium chamber (91) includes a heater which uses electricity as its heat source.
Abstract:
A sheet film forming roll includes a center rotary shaft. Fixed end plates are disposed in two locations which are away from each other in an axial direction of the center rotary shaft, respectively. An external cylinder is made of a metal thin film. Two ends of the external cylinder are rotatably supported by the fixed end plates, respectively. Multiple rolling rubber rolls have ends which are rotatably supported by the respective fixed end plates. The rolling rubber rolls are in sliding contact with an outer peripheral surface of the center rotary shaft, and in sliding contact with an inner peripheral surface of the external cylinder. The rolling rubber rolls divide an annular space between the external cylinder and the center rotary shaft into multiple heating medium chambers arranged in a circumferential direction of the sheet film forming roll. A heating medium is configured to be filled in each of the multiple heating medium chambers. At least one heating medium chamber includes a heater which uses electricity as its heat source.
Abstract:
A rail support device installed in a clip chain type sheet stretching apparatus configured to stretch a sheet includes a first rail support member, a second rail support member, and an arc shaped rail support member. The arc shaped rail support member is engaged with each of the connecting portions of the first and second rail support members to form a higher pair. The rail support device is symmetrical with respect to an intersection angle bisecting plane which is a plane developing in a vertical direction and including an intersection angle bisector.
Abstract:
Clipping both right and left side edge parts of a sheet or film by right and left pitch-variable clips having flow-directional clip pitches variable along with travel movements, respectively, having positions (AR, AL) for initiation of enlargements of flow-directional clip pitches changed between right clips and left clips, and enlarging flow-directional clip pitches along with travel movements of clips to thereby make an oblique stretch.