Method for stretch-blow moulding a container, including measuring the movement of the stretch rod during a boxing operation
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B29C-049/12
B29C-049/78
B29C-049/06
B29C-049/36
B29C-049/30
B29C-049/54
B29C-049/48
B29K-067/00
B29L-031/00
출원번호
US-0646148
(2013-11-14)
등록번호
US-9744712
(2017-08-29)
우선권정보
FR-12 61004 (2012-11-20)
국제출원번호
PCT/FR2013/052741
(2013-11-14)
국제공개번호
WO2014/080109
(2014-05-30)
발명자
/ 주소
Letestu, Mickael
Protais, Pierrick
출원인 / 주소
SIDEL PARTICIPATIONS
대리인 / 주소
Young & Thompson
인용정보
피인용 횟수 :
0인용 특허 :
7
초록▼
Disclosed is a method for manufacturing a container (2) from a blank (3) made of plastic material, in a stretch-blow molding unit (7) including: a mold (11) provided with a wall (13) and a mold base (14) which is axially movable relative to the wall (13) between a low position and a raised position;
Disclosed is a method for manufacturing a container (2) from a blank (3) made of plastic material, in a stretch-blow molding unit (7) including: a mold (11) provided with a wall (13) and a mold base (14) which is axially movable relative to the wall (13) between a low position and a raised position; a stretch rod (22) which is axially movable relative to the mold (11) between a high position and a low position; the method including: a phase of inserting the blank (3) in the mold (11); a phase of stretch-blow molding; a phase of boxing; a phase of determining the start and end of the boxing phase, respectively, by detecting the movement of the rod (22) from the low position thereof and the stopping of the rod (22) at the raised position thereof.
대표청구항▼
1. Method for producing, from a blank (3) of plastic material, a container (2) having a body (4) and a base (6), in a stretch-blow-molding unit (7) comprising: a mold (11) provided with a wall (13) having the shape of the body (4) of the container (2), and with a mold base (14) having the shape of t
1. Method for producing, from a blank (3) of plastic material, a container (2) having a body (4) and a base (6), in a stretch-blow-molding unit (7) comprising: a mold (11) provided with a wall (13) having the shape of the body (4) of the container (2), and with a mold base (14) having the shape of the base (6) of the container (2), the mold base (14) being movable axially relative to the wall (13) between a low position and a raised position;a stretch rod (22) that is movable axially relative to the mold (11) between a high position in which the rod (22) is outside of the mold, and a low position in which the rod (22) locally presses the blank (3) against the mold base (14) in the low position;this method comprising:a phase for introduction of the blank (3) into the mold (11);a stretch-blow-molding phase, during which a fluid under pressure is injected into the blank (3) and the stretch rod (22) is moved from the high position to the low position;a boxing phase, during which the mold base (14), initially in low position, is moved to the raised position, and during which the stretch rod (22), accompanying the mold base (14), is moved from the low position to a raised position corresponding to the raised position of the mold base (14);wherein the method comprises the determination of the start of the mold base (14) from the low position by detection of the movement of the rod (22) from the low position, and the determination of the arrival of the mold base (14) at the raised position by detection of the stopping of the rod (22) at the raised position. 2. Method according to claim 1, further comprising determining the instantaneous position of the mold base (14) between the low position and the raised position by detecting the instantaneous position of the rod (22) between the low position and the raised position. 3. Method according to claim 1, further comprising an operation for adjustment of a movement order for the mold base (14), when the start of the mold base (14) does not correspond to a predetermined theoretical start. 4. Method according to claim 1, further comprising an operation for adjustment of the flow rate of a solenoid valve (19) connecting an actuator (17) carrying the mold base (14) to a source (18) of fluid under pressure, when the actual arrival of the mold base (14) does not correspond to a predetermined theoretical arrival. 5. Stretch-blow-molding unit (7) for producing, from a blank (3) of plastic material, a container (2) having a body (4) and a base (6), this stretch-blow-molding unit (7) comprising: a mold (11) provided with a wall (13) having the shape of the body (4) of the container (2) and with a mold base (14) having the shape of the base (6) of the container (2), the mold base (14) being movable axially relative to the wall (13) between a low position and a raised position;a stretch rod (22) that is movable axially relative to the mold (11) between a high position in which the rod (22) is outside of the mold, and a low position in which the rod (22) locally presses the blank (3) against the mold base (14) in the low position;the stretch-blow-molding unit (7) further comprising means (23) for detecting at least movement of the rod (22) from the low position, and stopping of the rod (22) at a raised position corresponding to the raised position of the mold base (14), and a central processing unit (10) designed to deduce the start of the mold base (14) from the low position, and the arrival of the mold base (14) at the raised position. 6. Stretch-blow-molding unit (7) according to claim 5, wherein the detecting means appear in the form of an optical sensor (23). 7. Stretch-blow-molding unit (7) according to claim 6, wherein the optical sensor (23) is a laser sensor. 8. Stretch-blow-molding unit (7) according to claim 6, further comprising a frame (20), wherein the stretch rod (22) is mounted on a carriage (21) that is mobile relative to the frame (20), and wherein the sensor (23) is attached to the frame (20) and points toward the carriage (21). 9. Method according to claim 2, further comprising an operation for adjustment of a movement order for the mold base (14), when the start of the mold base (14) does not correspond to a predetermined theoretical start. 10. Method according to claim 2, further comprising an operation for adjustment of the flow rate of a solenoid valve (19) connecting an actuator (17) carrying the mold base (14) to a source (18) of fluid under pressure, when the actual arrival of the mold base (14) does not correspond to a predetermined theoretical arrival. 11. Method according to claim 3, further comprising an operation for adjustment of the flow rate of a solenoid valve (19) connecting an actuator (17) carrying the mold base (14) to a source (18) of fluid under pressure, when the actual arrival of the mold base (14) does not correspond to a predetermined theoretical arrival. 12. Method according to claim 4, further comprising an operation for adjustment of the flow rate of a solenoid valve (19) connecting an actuator (17) carrying the mold base (14) to a source (18) of fluid under pressure, when the actual arrival of the mold base (14) does not correspond to a predetermined theoretical arrival. 13. Stretch-blow-molding unit (7) according to claim 7, further comprising a frame (20), wherein the stretch rod (22) is mounted on a carriage (21) that is mobile relative to the frame (20), and wherein the sensor (23) is attached to the frame (20) and points toward the carriage (21).
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이 특허에 인용된 특허 (7)
Gittner Franz (Soltendieck DEX) Glaser Arnaldo (Bodenteich DEX) Kotke Klaus D. (Luder ; Reinstorf DEX), Blow molding method.
Senn, Konrad; Englbrecht, Rainer; Humele, Heinz, Device for forming plastics material preforms into plastics material containers with a variable output rate.
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