Provided is an automatic coiled material switching device, which comprises a machine table (8), a left unwinding device (81), a right unwinding device (82) and a rotatory cutting device (83); wherein the machine table is provided with a left auxiliary roller (84), a right auxiliary roller (85) and a plurality of fixed rollers; the rotary cutting device comprises a bearing seat (1), a bearing (11) arranged on the bearing seat, a rotating main body (2) arranged on the bearing, a rotating mechanism for driving the rotating main body to rotate on the bearing seat, a turning mechanism for driving the bearing seat to turn around, and a driving mechanism; the rotating main body comprises an upper part (21) and a lower part (22); a gap (23) for allowing a material to pass through is formed between the upper part and the lower part; and the rotating body is provided with a pressing mechanism for compressing the material and a cutting mechanism for cutting the material. The automatic coiled material switching device implements the automatic switching of material belts of the left unwinding device and the right unwinding device by arranging the rotating main body, rotating mechanism, the turning mechanism, the driving mechanism, the pressing mechanism and the cutting mechanism.

The present invention includes a first weight scale that senses first information necessary when acquiring the residual amount of a first composite material sheet wound on a first support rod; a second weight scale that senses second information necessary when acquiring the residual amount of a second composite material sheet wound on a second support rod; a first cutting part for cutting the first composite material sheet; a second cutting part for cutting the second composite material sheet; a pressure-bonding mechanism that pressure-bonds the first composite material sheet and the second composite material sheet; and a control device that controls the first cutting part, the second cutting part, and the pressure-bonding mechanism.

The present invention includes a first weight scale that senses first information necessary when acquiring the residual amount of a first composite material sheet wound on a first support rod; a second weight scale that senses second information necessary when acquiring the residual amount of a second composite material sheet wound on a second support rod; a first cutting part for cutting the first composite material sheet; a second cutting part for cutting the second composite material sheet; a pressure-bonding mechanism that pressure-bonds the first composite material sheet and the second composite material sheet; and a control device that controls the first cutting part, the second cutting part, and the pressure-bonding mechanism.

Provided is an automatic coiled material switching device, which comprises a machine table (8), a left unwinding device (81), a right unwinding device (82) and a rotatory cutting device (83); wherein the machine table is provided with a left auxiliary roller (84), a right auxiliary roller (85) and a plurality of fixed rollers; the rotary cutting device comprises a bearing seat (1), a bearing (11) arranged on the bearing seat, a rotating main body (2) arranged on the bearing, a rotating mechanism for driving the rotating main body to rotate on the bearing seat, a turning mechanism for driving the bearing seat to turn around, and a driving mechanism; the rotating main body comprises an upper part (21) and a lower part (22); a gap (23) for allowing a material to pass through is formed between the upper part and the lower part; and the rotating body is provided with a pressing mechanism for compressing the material and a cutting mechanism for cutting the material. The automatic coiled material switching device implements the automatic switching of material belts of the left unwinding device and the right unwinding device by arranging the rotating main body, rotating mechanism, the turning mechanism, the driving mechanism, the pressing mechanism and the cutting mechanism.

Apparatus suitable for guaranteeing a quick and automatic change of materials wound on reels, said apparatus consisting mainly of a reel-alternating mechanism combined with a mechanism for cutting and reconnecting the reeled material.

Systems and methods for connecting the films of a first roll and a second roll in a packaging machine. The system includes a cutting device to cut the film of a first roll at a cutting position upstream side of a holding position with respect to a feeding direction toward a former while the film is held by a holding device. The system also includes a robot to move the second roll to a connecting position where a leading end of second roll film overlaps with a film terminal end of the first roll film. The system further includes a connecting device to connect the film leading end of the second roll film to the film terminal end of the first roll film. The robot to move the second roll from the connecting position to a set position after connecting the films, so that the second roll film is tensioned.

The invention relates to an adhesive dispenser comprising: a platform; an unwinder reel pivotally mounted on the platform and designed to carry a roll of adhesive; a separator member (9) for separating adhesive from the roll of adhesive, the separator member being arranged on the platform; the adhesive dispenser comprising at least one embossing roller (18) arranged on the platform between the unwinder reel and the separator member so that, in operation, it embosses the adhesive tape (3) being unwound from the roll of adhesive before it reaches the separator member.

The invention also relates to a device for connecting together two flattened tubular sheaths including such an adhesive dispenser.

Apparatus suitable for guaranteeing a quick and automatic change of materials wound on reels, said apparatus consisting mainly of a reel-alternating mechanism combined with a mechanism for cutting and reconnecting the reeled material.

In a bagmaking-and-packaging apparatus, when switching from bagmaking using a first film to bagmaking using a second film, a first impulse sealer interconnects an end-of-bagmaking film of the first film and a starting end scrap of the second film to form a first interconnected film. A second impulse sealer interconnects a third part on a starting end side of the first F1 and a fourth part of the second film to form a second interconnected film.