摘要:
A splicing adhesive tape having a first carrier and a first splittable connector element having a left and a right boundary edge, wherein at least one of said two edges is not straight and comprises protrusions that are round at the locations thereof protruding out the farthest, and a second splittable connector element having a left and a right boundary edge, wherein at least one of said two edges is straight, wherein the first and the second splittable connector element are disposed adjacent to each other on the carrier.
摘要:
This invention relates to flying paster, comprising a frame (1), a turret (46) rotatably arranged around a horizontal axis (L1) inside of said frame (1), reel arms (3, 5; 3A, 3B, 5A, 5B) arranged on said turret (46), at least one of said reel arms (3, 5; 3A, 3B, 5A, 5B) arranged to be axially movable on said turret (46), said moveable reel arm (3; 3A, 5 5B) holding at least one chuck arrangement (30A, 30B; 50B) for paper rolls (R1, R2; R1′, R2′), said at least one chuck arrangement (30A, 30B; 50B) having a driven spindle (328, 329) to drive at least one of said paper rolls (R1, R2; R1′, R2) and at least one motor (20; 20A, 20B) which via at least one transmission arrangement (21-27) is arranged to drive said spindle (328, 329), wherein that said at least one motor (20; 20A, 10 20B) is arranged outside of said frame (1) and that said transmission arrangement (21-27) is arranged to transmit the ftild driving force to said spindle (328, 329) by means of a coaxially extending device that extends coaxially with said horizontal axis (L1).
摘要:
A feeding apparatus comprises a rotatably supported turret arm for supporting a new web roll and an old web roll, and a turret arm turning motor for rotating the turret arm, and splices a web of the new web roll to a web of the old web roll, thereby continuously supplying a web. The feeding apparatus further comprises a web roll diameter measuring distance meter, provided at a position opposed to the circumferential surface of the new web roll when the new web roll stops at a diameter measuring position, for measuring the distance to the new web roll; and a control device for determining the diameter of the new web roll in accordance with an output from the distance meter, and driving the turret arm turning motor in accordance with the determined diameter of the new web roll to move the new web roll to a splicing standby position.
摘要:
In the case where the width of a web roll for the next job is much different from that of the web roll for the former job, the rotational position of the new web roll is moved to a position at which a web of the new roll is easily pasted to the web of the old roll and the new web roll is held at the position. A device for continuously supplying a web can continuously supply the web by adhering the web of an old web roll onto the web of the new web roll. The device includes a manual paper paster setting means for setting a manual paper paster mode and a control device for locating/stopping the rotational position of the new web roll at an adhering waiting position in response to a signal from the manual paper paster setting means.
摘要:
An air exhausting concave portion is provided on an outer peripheral surface of a paster roller that pushes a first web and a second web in their overlapped state. Both end portions of the outer peripheral surface of the paster roller are chamfered. The paster roller is formed like a crown shape.
摘要:
A flying reel changer includes first drive means for rotating the new paper reel at a minimum splice speed and second drive means for accelerating the old paper reel from either standstill or crawl speed to a speed which substantially corresponds to the minimum splice speed. The flying reel changer includes actuating means that, while the old paper reel is being accelerated from the first state, moves the dancer roll such that a substantially uniform tension is maintained in the paper web. The flying reel changer also includes joining means that joins the old paper web and the new paper web together while the old paper web and the new paper web are moving at the minimum splice speed.
摘要:
An automatic paper-web splicing system rotates a new paper roll being spliced, causes the peripheral speed thereof to agree with the traveling speed of a traveling web, and splices the start end of the new paper roll to the traveling web. The automatic paper-web splicing system directly detects via a detection mark provided on the outer peripheral surface of a new paper roll being spliced to a traveling web that the outer peripheral surface of the new paper roll is moved by a predetermined length by the rotation of the new paper roll, causes the time required for the new paper roll to move to agree with the time required for the traveling web to travel over the predetermined length, thereby causing the peripheral speed of the new paper roll to agree with the traveling speed of the traveling web, and carries out automatic splicing in this state.
摘要:
The invention relates to a roll stand (1') comprising a frame (3') with a roll-holding device (71) for two unwinding stations (A', B'), which frame (3') comprises means (101, 102, 103) for joining, in a roll-changing operation, a material web, which is unwound from a roll (12, 12a) provided with a rotating spindle (171, 181), to a leading end, provided with adhesive, of a material web from another roll (12, 12a) which is similarly provided with a rotating spindle (171, 181), as well as means (108, 109) for cutting off the first-mentioned web and a mechanism for braking the spindles. The invention is further characterized by means (117, 118, 172, 173, 182, 183, 197) for, on the one hand, transferring the rotary moment from the roll spindles (171, 181) to a braking mechanism (115), comprising a free-wheel mechanism (157, 195) arranged to connect the braking mechanism (115) to the roll spindle (171, 181) which is momentarily rotating at the highest speed and on the other hand, at the start of a roll-change operation, transferring an accelerating moment from an acceleration unit (116) to the roll spindles (171, 181), which acceleration unit comprises a free-wheel mechanism (165, 166) arranged to connect the acceleration unit to the roll spindle (171, 181) which is momentarily rotating at the lowest speed.
摘要:
A web splicer consists of framework which supports a pair of vertical rails each having a pair of tracks. The rails are spaced horizontally along a center line. One of the rails moves vertically. Travelling up and down the tracks formed into the rails are chucks in bearing support blocks. Motor drives rotate the chucks after they are engaged with a roll of web. A dancer roller and splicing head are of customary construction. Particularly, the framework and associated drives raises at least one of the rails so that it may be raised and lowered, while constraining the rail to move vertically and at a constant distance from the opposite rail. Each rail guides a pair of bearing support blocks, one on each of its tracks, which can independently travel the vertical length of the rail. Each bearing support block rotatably supports a roll core chuck that can be extended in a direction parallel to the center line of the framework and towards an opposing chuck mounted on the opposite rail, so disposed so that the two pairs of chucks may be extended in the hollow core of an interposed roll of web. After the chucks are extended into the roll, motorized lifting mechanism raises the opposing bearing blocks in unison along the tracks. After the roll is lifted the dolly which conveyed it to the splicer is removed. As an expiring roll unwinds and its diameter is thereby reduced, it is raised up near the top of the rails. The one movable rail is then raised up sufficiently to allow a dolly containing a new roll to be inserted underneath the bottom end of the rail. The new roll is positioned offset to the opposite side of the center line from the expiring roll, where it is received by a second pair of chucks which are able to travel down the rail past the first pair.
摘要:
An apparatus is provided for handling a web of material fed from a roll. When the roll is larger than a selected amount, a roll contacting belt contacts the outer surface of the roll to aid in rotating the roll. The roll contacting belt is speed-responsive to a tension sensing means. Once the roll decreases to the selected amount, the roll contacting belt is disengaged from the roll and a positive drive controls the speed of the roll. This arrangement reduces web upsets caused by out of round new large rolls and eliminates telescoping due to the action of the belt against small diameter rolls.