摘要:
Apparatus for gluing the final tail (L') of rolls or logs (L) of wound sheet material includes a glue distributor device (10) located below an opening (7) in a roll down table (6). The tail (L') of the roll is separated from the roll (L) by a tail separating unit upstream of the opening (7). The gluing distributor device (10) includes a tank (11) containing glue (12), a rotatable pick up roll (13) located inside of the tank and partially immersed in the glue, and a glue distributor roll (14) positioned externally above the tank (11) and provided with at least one paddle (15). The pick up roll (13) picks up glue as it rotates, and the rotating paddle (15) contacts the pick up roll (13) and picks up glue as the glue distributor roll (14) rotates. The paddle (15) rotates into the opening (7) in the roll down table (6), and glue is transferred from the paddle (15) to a roll as the roll rolls over the opening (7). A cull roll can be culled without applying glue to the roll by mounting a cull roll support projection (19; 21) on the glue distributor roll (14) which is not long enough to contact the pick up roll (13). The cull roll support projection is positioned in the opening (7) in the roll down table (6) when the cull log rolls over the opening (7).
摘要:
Apparatus for gluing the final tail (L') of rolls or logs (L) of wound sheet material includes a glue distributor device (10) located below an opening (7) in a roll down table (6). The tail (L') of the roll is separated from the roll (L) by a tail separating unit upstream of the opening (7). The gluing distributor device (10) includes a tank (11) containing glue (12), a rotatable pick up roll (13) located inside of the tank and partially immersed in the glue, and a glue distributor roll (14) positioned externally above the tank (11) and provided with at least one paddle (15). The pick up roll (13) picks up glue as it rotates, and the rotating paddle (15) contacts the pick up roll (13) and picks up glue as the glue distributor roll (14) rotates. The paddle (15) rotates into the opening (7) in the roll down table (6), and glue is transferred from the paddle (15) to a roll as the roll rolls over the opening (7). A cull roll can be culled without applying glue to the roll by mounting a cull roll support projection (19; 21) on the glue distributor roll (14) which is not long enough to contact the pick up roll (13). The cull roll support projection is positioned in the opening (7) in the roll down table (6) when the cull log rolls over the opening (7).
摘要:
A stiffening device (100) is described for a web (W) destined to be wound in logs (L) by means of a winding unit (R1, R2, R3) of a re-winding machine. The stiffening device is adapted to form on the web (W) at least one longitudinal strip (W1, W2, W3) of greater thickness, so as to obtain in the log (L) at least one sector (S1, S2, S3) with a greater stiffness to avoid deformation of the log (L) during winding
摘要:
A control device for a cutting blade (1), particularly for cutting-off machines for logs of web material, comprising:
measuring means (15) able to detect deformation values (λ ril ) on at least one portion of the cutting blade (1), comparison means (17, 26) to compare the deformation value (λ ril ) measured by the measuring means (15) with at least one threshold deformation value (λ max , λ min ) set by an operator, and actuator means (20) to send, according to the signals coming from the comparison means (17, 16), control signals (C1, C2) to the motorization (21) of the machine, to control the start-up and/or the stop of said motorization (21).
摘要:
In a rewinding machine (10), a device (50) for discharging logs (20, 20') comprises: a chute (30) disposed downstream of a winding area (2) designed to allow the formed logs (20') to roll towards the output of the winding machine (10), stopping means (111, 117) designed to stop the log (20') on the chute (30), and drive means (113) acting on the stopping means (111) to bring them from a working position in which they stop the log (20') to a resting position in which they allow the log (20') to roll on the chute (30). The chute (30) comprises: a first portion (31) with a slight slope, disposed at the output of the winding area (2), designed to slow the log (20') by friction or in any case not to accelerate the rolling thereof, and a second portion (32) with a slope greater than that of the first portion (31), designed to accelerate by gravity the rolling of the log (20') after it has been stopped by means of the stopping means (111, 117).
摘要:
A core gluing device for a rewinding machine comprises conveying means (1) designed to convey the cores (10a, 10b, 10c) along a core conveying surface (A-A), a gluing unit (2) comprising a first gluing roller (22) which picks up the glue from a glue container (20) and a second gluing roller (26) opposed to the first gluing roller, so that each core (10a, 10b, 10c) can pass between the two gluing rollers (22, 26) for application of a trace of glue (100b, 100c) on it. The gluing rollers (22, 26) are driven at different speeds to control the width of the trace of glue to be applied to the core and positioning devices (4) are provided, arranged downstream of the gluing devices (2) and upstream of a log winding unit (6) of the rewinding machine for the correct positioning of the core (10c) with the related trace of glue (100c), before insertion between the winding rollers.
摘要:
A core gluing device for a rewinding machine comprises conveying means (1) designed to convey the cores (10a, 10b, 10c) along a core conveying surface (A-A), a gluing unit (2) comprising a first gluing roller (22) which picks up the glue from a glue container (20) and a second gluing roller (26) opposed to the first gluing roller, so that each core (10a, 10b, 10c) can pass between the two gluing rollers (22, 26) for application of a trace of glue (100b, 100c) on it. The gluing rollers (22, 26) are driven at different speeds to control the width of the trace of glue to be applied to the core and positioning devices (4) are provided, arranged downstream of the gluing devices (2) and upstream of a log winding unit (6) of the rewinding machine for the correct positioning of the core (10c) with the related trace of glue (100c), before insertion between the winding rollers.