摘要:
In the field of unwinding webs from an unwind stand in which a fresh web is prepared with a paste strip and is lapped spliced to a progressing expiring web, and the expiring web is then cut upstream of the splice to form a tail, the position of the tail is predicted or detected, and the movement thereof to a taping station causes a tape support roll, which supports a strip of one-sided adhesive tape to be applied to the tail in such a manner that part of the adhesive strip covers the tail and part of the strip engages the underlying web so that the tail becomes firmly taped down to the web thereby permitting the web to be run in either direction through processes such as converting processes, coating processes or the like. Embodiments of tape tail detectors are disclosed and embodiments of hold-down tape transfer mechanisms are disclosed.
摘要:
A paster tab for releasably securing the beginning end of a roll of material to the first layer of the roll is disclosed. The paster tab includes a color contrast area suitable for optical detection to orient the paper roll. The paster tab further includes a weakened portion for promoting separation of the paster tab between the areas secured to the beginning end of the new roll and the first layer of the roll. A method of splicing the trail end of an expiring ribbon to the beginning end of a new roll of ribbon is further disclosed including adhesively securing the trail end of the old ribbon to both the top of the beginning end of the new ribbon and to a portion of the paster tab.
摘要:
An infeed mechanism coacts with a splicer mechanism for splicing successive rolls of web and for feeding the continuous web thus obtained into a rotary press or the like via a web storage mechanism, which normally stores therein a predetermined length of the web for delivery to the press or the like during splicing operation. The infeed mechanism includes a pair of roll holder arms carrying on their opposite ends an old web roll, from which the web is being delivered to the press or the like, and a new web roll to be spliced to the old web. Toward the end of the web delivery from the old web roll the roll holder arms are turned through a preassigned angle, with the result that the web from the old web roll travels close to the periphery of the new web roll. Then the new web roll is revolved about its own axis until an adhesive region thereon comes opposite to the old web. Then, with the rotation of the old web roll arrested, a brush of a retractable splicer mechanism presses the old web against the adhesive region on the new web roll. Preferably an excess length of the old web behind the adhesive region is subsequently cut off by a cutter included in the splicer mechanism. Then the web delivery from the new web roll is started. The complete operation can be automated.
摘要:
A splice mechanism (100) for a packaging assembly (10), the packaging assembly (10) including: a former shoulder (12); a controller (14); a film drive (16) controlled by the controller (14) for feeding a film (112) at a film speed to the former shoulder (12) to form a tubular film (22) moving in a film direction (20); a sealing device (24) to seal the tubular film (22) in a first sealing direction (26), the first sealing direction (26) being parallel to the film direction (20); a set of jaws (28) controlled by the controller (14) and movable at a jaw speed to engage and seal the tubular film (22) in a second sealing direction (30) to form a first seal (32) and a second seal (34) in each bag, thereby forming a closed bag (36), the splice mechanism (100) including: an active film roll (110) from which film (112) is drawn to be fed to the former shoulder (12) by the film drive (16); a second film roll (120) having film (122) for feeding to the former shoulder (12); a film roll holder (130) holding the active film roll (110) and the second film roll (120) such that film (112) from the active film roll (110) extends along a film path (140) to the former shoulder (12) and the second film roll (120) is accessible; a splice roller (150) against which film (122) from the second film roll (120) is placed, the film (122) having a film end (124), the film end (124) having an adhesive (126), the splice roller (150) being movable between a free position, wherein the film path (140) is unimpeded by the splice roller (150), and a splice position, wherein the film path (140) is tangential to the splice roller (150) at a splice point (142) on the film path (140).
摘要:
An apparatus, and a related method, for unwinding reels and for joining a ply between two reels including a first unwinder adapted to unwind a first reel, a second unwinder adapted to unwind a second reel, a joining device adapted to join a first ply belonging to the first reel with a second ply belonging to the second reel, the joining device including a first pulling bar is able to pull a flap of the first ply along a joining path with the second ply, a second pulling bar is adapted to pull a flap of the second ply along a joining path with the first ply, joining means configured to join, in a joining point along the joining path, the flap of the first ply with the second ply or the flap of the second ply with the first ply, first cutting means configured to cut the first ply or the second ply upstream of the joining point where the joint is performed between the first ply and the second ply, and second cutting means configured to cut the flap of the first ply or the flap of the second ply downstream of the joining point.
摘要:
An assembly and method provide a continuous supply of packaging film to a form, fill and seal packaging machine with two spindles alternately operating as the active spindle to feed the film from one roll at a time. Opposed pneumatic manifolds are operative to splice the tail-end of the film from the active roll to the head-end of the film from the standby roll. The opposed manifolds pivot in opposite directions away from the machine to provide easy access for loading. A programmable controller controls the splicing operation. Valves operated by the controller connect a vacuum source to one of the manifolds to hold the head-end at a splicing station and to the other to maintain tension on the active film after the tail-end leaves the spindle. An end-of-roll detector near the spindle triggers the tensioning function. The width of the manifold is adjustable to accommodate different width film. A photocell detector and encoder in the circuit allow tracking of the tail-end. When it arrives at the splicing station, the appropriate control valve rapidly switches to apply an air blast generated by positive pneumatic pressure to blow the tail-end/head-end together so that adhesive tape pre-applied to the head-end is securely attached to the tail-end to complete the splicing operation. The programmable controller continues to track the splice through the packaging machine to initiate a dry cycle and removal of the splice section.
摘要:
An infeed mechanism coacts with a splicer mechanism for splicing successive rolls of web and for feeding the continuous web thus obtained into a rotary press or the like via a web storage mechanism, which normally stores therein a predetermined length of the web for delivery to the press or the like during splicing operation. The infeed mechanism includes a pair of roll holder arms carrying on their opposite ends an old web roll, from which the web is being delivered to the press or the like, and a new web roll to be spliced to the old web. Toward the end of the web delivery from the old web roll the roll holder arms are turned through a preassigned angle, with the result that the web from the old web roll travels close to the periphery of the new web roll. Then the new web roll is revolved about its own axis until an adhesive region thereon comes opposite to the old web. Then, with the rotation of the old web roll arrested, a brush of a retractable splicer mechanism presses the old web against the adhesive region on the new web roll. Preferably an excess length of the old web behind the adhesive region is subsequently cut off by a cutter included in the splicer mechanism. Then the web delivery from the new web roll is started. The complete operation can be automated.
摘要:
A roll transfer robot and method of operation are disclosed wherein a roll transfer robot acts to move a roll of material from a conveyor assembly to a payoff assembly. The roll transfer robot assembly is capable of translational motion between the two assemblies. In addition the roll transfer robot includes a spindle assembly capable of both sliding and rotational displacement. Detectors are additionally provided as part of the robot assembly for identifying the rotational position of the roll being mounted to the payoff assembly.
摘要:
An auto splicing apparatus of roll to roll feeding equipment includes first and second supply rolls in which component fabric of a single layer is wound in roll form and the component fabric is unwound from the first supply roll or the second supply roll along a predetermined transfer path including a pair of feeding rollers that are disposed at upper and lower sides, respectively, of the transfer path; a first cutter assembly that is installed to perform a first vertical rotation based on the transfer path between the first supply roll and the feeding roller and including a first fabric cutter and a first fabric absorption portion; and a second cutter assembly that is installed to perform a second vertical rotation based on the transfer path between the second supply roll and the feeding roller and including a second fabric cutter and a second fabric absorption portion.
摘要:
A paper pasting device has a depressing member depressing a paper web being fed. The paper web is depressed onto a roll of a paper web by the depressing member. The paper pasting device includes first depressing element cooperatively connected with the depressing member, for urging the depressing member toward the currently consumed paper and depressing the currently consumed paper onto the another roll of the paper web, and second depressing element provided separately from the depressing member and actuated after depressing operation of the first depressing means for contacting with a proper second portion of the depressing member and the cooperating member of the depressing member, for contacting with the proper second position of the depressing member and the cooperating member and reinforcing a depressing force by the depressing member.