US 12,172,794 B2
Curl correcting device and blister packaging machine
Hideteru Torikai, Natan (JP); and Tetsuya Kannan, Natan (JP)
Assigned to MARUHO HATSUJYO KOGYO CO., LTD., Kyoto (JP)
Appl. No. 17/794,834
Filed by Maruho Hatsujyo Kogyo Co., Ltd., Kyoto (JP)
PCT Filed Jan. 20, 2021, PCT No. PCT/JP2021/001806
§ 371(c)(1), (2) Date Jul. 22, 2022,
PCT Pub. No. WO2021/149706, PCT Pub. Date Jul. 29, 2021.
Claims priority of application No. 2020-008517 (JP), filed on Jan. 22, 2020.
Prior Publication US 2023/0079106 A1, Mar. 16, 2023
Int. Cl. B65B 9/04 (2006.01); B65H 29/70 (2006.01)
CPC B65B 9/045 (2013.01) [B65H 29/70 (2013.01)] 13 Claims
OG exemplary drawing
 
11. A blister packaging machine comprising:
a curl correcting device that corrects a curl occurring in a blister film with a strip shape, pockets for accommodating works being formed in the blister film and being arranged in a first direction along an extending direction of the blister film; and
a punching device punching a blister pack from the blister film;
wherein the curl correcting device comprises:
a pressing unit disposed on one surface side in a thickness direction of the blister film, and pressing, by a pressing member, only at least one first area or only at least one second area, the at least one first area including at least a part of the pockets in the blister film, having a width in the first direction that is less than a distance between center axes, of two mutually neighboring pockets in the first direction, along the thickness direction of the blister film, and including both end portions of the blister film in a second direction perpendicular to the first direction and the thickness direction of the blister film, the at least one second area located between two mutually neighboring pockets in the first direction in the blister film, having a width in the first direction that is less than a distance between center axes, of two mutually neighboring pockets in the first direction, along the thickness direction of the blister film, and including both end portions of the blister film in the second direction; and
a support member supporting the blister film in a state of abutting on the other surface side that is on a side opposite the one surface side in the thickness direction of the blister film on both sides of the at least one first area or the at least one second area pressed by the pressing member in the first direction of the blister film,
a recess having a width in the second direction greater than a width in the second direction of the pocket and penetrating the pressing member in the first direction is formed at a location corresponding to the pocket on the blister film side of the pressing member, and
when the blister film is conveyed, a shortest distance between an end portion on the blister film side in the pressing member and the blister film is less than a height of the pocket in the thickness direction of the blister film.