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1. WO2019211685 - A DEVICE AND A METHOD FOR MOTION CONTROL OF A PUSHER ELEMENT IN AN AUTOMATED SACK MAKING APPARATUS

Publication Number WO/2019/211685
Publication Date 07.11.2019
International Application No. PCT/IB2019/053017
International Filing Date 12.04.2019
IPC
B31B 70/84 2017.1
BPERFORMING OPERATIONS; TRANSPORTING
31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
70Making flexible containers, e.g. envelopes or bags
74Auxiliary operations
81Forming or attaching accessories, e.g. opening devices, closures or tear strings
84Forming or attaching means for filling or dispensing contents, e.g. valves or spouts
B31B 70/74 2017.1
BPERFORMING OPERATIONS; TRANSPORTING
31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
70Making flexible containers, e.g. envelopes or bags
74Auxiliary operations
CPC
B31B 2150/001
BPERFORMING OPERATIONS; TRANSPORTING
31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
2150Flexible containers made from sheets or blanks, e.g. from flattened tubes
001with square or cross bottom
B31B 2150/003
BPERFORMING OPERATIONS; TRANSPORTING
31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
2150Flexible containers made from sheets or blanks, e.g. from flattened tubes
003made from tubular sheets
B31B 2160/20
BPERFORMING OPERATIONS; TRANSPORTING
31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
2160Shape of flexible containers
20with structural provision for thickness of contents
B31B 70/006
BPERFORMING OPERATIONS; TRANSPORTING
31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
70Making flexible containers, e.g. envelopes or bags
006Controlling; Regulating; Measuring; Safety measures
B31B 70/52
BPERFORMING OPERATIONS; TRANSPORTING
31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
70Making flexible containers, e.g. envelopes or bags
26Folding sheets, blanks or webs
52by reciprocating or oscillating members other than plungers and dies, e.g. by fingers
B31B 70/857
BPERFORMING OPERATIONS; TRANSPORTING
31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
70Making flexible containers, e.g. envelopes or bags
74Auxiliary operations
81Forming or attaching accessories, e.g. opening devices, closures or tear strings
84Forming or attaching means for filling or dispensing contents, e.g. valves or spouts
855Forming valves integral with the containers
857by deforming the bag, e.g. stretching
Applicants
  • LOHIA CORP LIMITED [IN]/[IN]
Inventors
  • LOHIA, Siddharth
Agents
  • TASE, Vijay
Priority Data
20181101075029.04.2018IN
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) A DEVICE AND A METHOD FOR MOTION CONTROL OF A PUSHER ELEMENT IN AN AUTOMATED SACK MAKING APPARATUS
(FR) DISPOSITIF ET PROCÉDÉ DE COMMANDE DE MOUVEMENT D'UN ÉLÉMENT POUSSEUR DANS UN APPAREIL DE FABRICATION DE SACS AUTOMATISÉ
Abstract
(EN) Pusher elements that move forward and backward are used for forming valves in sack making. Their settings deteriorate over time causing wear and tear adversely affecting accuracy of pusher element's operation. The invention discloses a device for controlling the motion of a pusher element (1) in an automated sack making apparatus which is used for making a multi-angular fold at a corner of a tubular fabric (7) having separated individual layers. The device has an electro- magnetic device with discrete-step-motion (5) that controls the movement of said pusher element (1), and which in turn comprises a close-loop controller (6), and a motion driver (5 A). A method of controlling the motion of a pusher element (1) in an automated sack making apparatus is also disclosed where a step of controlling positioning of pusher element (1), and its acceleration during its forward movement, and its deceleration in its reverse movement precisely and accurately using an electro-magnetic device with discrete step motion (5) in relation to the travelling fabric (7) is disclosed.
(FR) L'invention aborde le problème des éléments pousseurs qui se déplacent vers l'avant et vers l'arrière et sont utilisés pour former des soupapes dans la fabrication de sacs. Leurs réglages se dégradent au fil du temps, ce qui provoque une usure qui affecte la précision de fonctionnement de l'élément pousseur. La solution selon l'invention porte sur un dispositif de commande du mouvement d'un élément pousseur (1) dans un appareil de fabrication de sacs automatisé qui est utilisé pour réaliser un pli multi-angulaire au niveau d'un coin d'une étoffe tubulaire (7) ayant des couches individuelles séparées. Le dispositif comprend un dispositif électromagnétique avec un mouvement pas à pas discret (5) qui commande le mouvement dudit élément pousseur (1) et qui, à son tour, comprend un régulateur à boucle fermée (6) et un circuit de pilotage de mouvement (5A). L'invention concerne également un procédé de commande du mouvement d'un élément pousseur (1) dans un appareil de fabrication de sacs automatisé, dans lequel une étape de commande du positionnement de l'élément pousseur (1), ainsi que son accélération pendant son mouvement vers l'avant, et sa décélération dans son mouvement inverse, avec précision et exactitude en utilisant un dispositif électromagnétique à mouvement pas à pas discret (5) par rapport à l'étoffe (7) en déplacement.
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