Double-sided transcription type sheet/film forming roll apparatus and double-sided transcription type sheet/film forming method

Patent metadata

Field	Value
Publication number	US-11731340-B2
Application number	US-202217655193-A
Country	US
Kind code	B2
Filing date	Mar 17, 2022
Priority date	Jul 20, 2017
Publication date	Aug 22, 2023
Grant date	Aug 22, 2023

Abstract

An apparatus includes a first roll and a second roll on each of which a pattern is formed, a first motor and a second motor to rotate the respective rolls, a shaft direction supporting mechanism to support the second roll along a shaft direction and an axial position adjusting mechanism configured to move the shaft direction supporting mechanism along the shaft direction. The posture of the rotating shaft of the second motor is maintained constant at all times, and the second roll is moved in the shaft direction along the first roll, thereby adjusting the positions of both patterns on the first roll and the second roll along the shaft direction.

First claim

What is claimed is:

1. A sheet/film forming method using a sheet/film forming roll apparatus including a first roll and a second roll configured to be rotatable in opposition to each other, on each of which a preset pattern is formed, and configured to feed a molten resin into a part between the first roll and the second roll to thereby form a sheet or a film, the method comprising:
rotating the first roll by a first motor;
transmitting a rotation state of a second motor including a rotary portion on which a plurality of permanent magnets are arranged, to the second roll by a power transmission mechanism comprising an intermediate shaft part and two shaft couplings; and
bringing the first roll close to or away from the second roll by a push-pull unit,
wherein
a variation state of a rotating shaft of the second roll created when bringing the first roll close to and away from the second roll is absorbed to be eliminated as the intermediate shaft part is inclined with respect to one of the two shaft couplings as a base point, thereby maintaining a posture of a rotating shaft of the second motor constant at all times,
a shaft direction supporting mechanism configured to support the second roll along a shaft direction in a state where the second roll is rotatable is moved by an axial position adjusting mechanism along the shaft direction and thus the second roll is moved in the shaft direction along the first roll with movement of the shaft direction supporting mechanism, thereby adjusting positions of both patterns on the first roll and the second roll along the shaft direction, and
an adjusting plate of the axial position adjusting mechanism supports the second motor and the power transmission mechanism, wherein the adjusting plate is configured to move the second motor and the power transmission mechanism integrally along the shaft direction.

2. A sheet/film forming method using a sheet/film forming roll apparatus comprising a first roll and a second roll configured to be rotatable in opposition to each other, and a third roll rotatable in synchronism with the second roll, on each of the second roll and the third roll, a preset pattern is formed and configured to feed a molten resin into a part between the first roll and the second roll to form a sheet or a film on both surfaces of which the patterns are transcribed, as the molten resin passes through between the second roll and the third roll, the method comprising:
rotating the first roll by a first motor;
transmitting a rotation state of a second motor including a rotary portion on which a plurality of permanent magnets are arranged, to the second roll by a power transmission mechanism comprising an intermediate shaft part and two shaft couplings; and
bringing the first roll close to or away from the second roll by a push-pull unit,
wherein
a variation state of a rotating shaft of the second roll created when bringing the first roll close to and away from the second roll is absorbed to be eliminated as the intermediate shaft part is inclined with respect to one of the two shaft couplings as a base point, thereby maintaining a posture of a rotating shaft of the second motor constant at all times,
a shaft direction supporting mechanism configured to support the second roll along a shaft direction in a state where the second roll is rotatable is moved by an axial position adjusting mechanism along the shaft direction and thus the second roll is moved in the shaft direction along the third roll with movement of the shaft direction supporting mechanism, thereby adjusting positions of both patterns on the second roll and the third roll along the shaft direction, and
an adjusting plate of the axial position adjusting mechanism supports the second motor and the power transmission mechanism, wherein the adjusting plate is configured to move the second motor and the power transmission mechanism integrally along the shaft direction.

Assignees

• Shibaura Machine Co Ltd

Inventors

• Mizunuma Koji
• OKE Ryota
• Yamaguchi Tomonori
• Iwata Akihiro

Classifications

• B29C59/04 Primary

  using rollers or endless belts · CPC title

• B29C43/24 Primary

  Calendering · CPC title

• B29C43/245

  Adjusting calender parameters, e.g. bank quantity · CPC title

• B29C43/46

  Rollers · CPC title

• B29C48/0011

  combined with compression moulding · CPC title