The invention relates to a detecting device for intaglio printing press tension control. The detecting device is provided with an air cylinder, the end part of the air cylinder is fixedly connected with a swing arm, a swing roller is installed at the lower end of the swing arm, the upper end of the swing arm is fixedly installed on a shaft through a plummer block, the position between the shaft and the plummer block is sleeved with a large gear, the large gear is meshed with a small gear, the small gear is fixedly installed on a support, and a potentiometer is installed on the support; the aircylinder is an ultra-low friction air cylinder, the friction coefficient is small, the response speed is high, an air source is stable, the structure is simple, and the good absorbing buffering effect on large-scope tension jumping is achieved; and meanwhile, influences of eccentricity and velocity changes of scrolls on tension can be weakened, the weights of the swing roller and the swing arm are small, and rotation is flexible.

Detecting device for intaglio printing press tension control

The invention relates to a tension roll adjusting device for a film stretching line tractor. Two ends of a universal joint are connected with one end of an output shaft of a motor and one end of a roller shaft respectively. Two ends of a roller are provided with same swing arms respectively. The roller shaft is rotatably connected with upper holes of the swing arms. The other end of a pin with the outer end fixed to a wallboard is rotatably connected with a lower hole of each swing arm. A positioning plate fixed to each wallboard is disposed below each swing arm. Two adjusting bolts upwardly penetrate screw holes of the positioning plates, the upper ends of the adjusting bolts are abutted to the bottom ends of the swing arms, the adjusting bolts move up and down to drive the swing arms to swing, a roller of a tension roll is driven to swing, and tension of a film on the roller is adjusted. An arc-top top pin is fixed to one end of each weighing sensor fixed to the corresponding wallboard. A flat-bottom bottom pin is fixed to the bottom end of a side plate extending out of the rear of each swing arm. The bottom sides of the bottom pins are tangent with the tops of the top pins. The swing arms transmit tension to the weighing sensors though the bottom pins and the top pins so that the tension is measured. The tension roll adjusting device for the film stretching line tractor has the advantages that tension of the film is easy to adjust, measured tension values are accurate and reliable, and the device is simple in structure and easy to implement.

Tension roll adjusting device for film stretching line tractor

The invention relates to a tension floating rod for a bag making machine. The tension floating rod comprises a fixed roll shaft, a left floating rod fixing plate, a floating roll shaft, a left floating rod swing arm, a fixed roll, a floating roll, a right floating rod swing arm and a right floating rod fixing plate, and is characterized by also comprising a tension feedback mechanism; the tension feedback mechanism comprises a linear potentiometer, a knuckle bearing, a potentiometer fixing seat, a potentiometer rotating shaft and a bearing block; the linear potentiometer is fixedly arranged on the potentiometer fixing seat; the potentiometer fixing seat is fixedly arranged at the end part of the potentiometer rotating shaft; the potentiometer rotating shaft is arranged in the bearing block through the bearing in a supporting manner; the bearing block is fixedly arranged on the floating rod fixing plate at the left side; a displacement shaft of the linear potentiometer is upwards connected with the left end of the floating roll shaft through the knuckle bearing. The tension floating rod disclosed by the invention is reasonable in design; a tension signal of a thin film is directly fed back to a system through the precise linear potentiometer, so the tension floating rod is more accurate; the tension of the thin film can be ensured to be within a reasonable range all the time in a movement process.

Tension floating rod for bag making machine

The invention discloses a rotary arm uncoiling paper connecting machine. The rotary arm uncoiling paper connecting machine comprises a rack and a paper connecting head matched with the rack. The rackis provided with a paper connecting mechanism and a paper cutoff mechanism. The paper connecting mechanism comprises two paper connecting arms symmetrically hinged to the rack and a paper connecting arm cylinder for driving the paper connecting arms to press down or lift up. A paper connecting press roll arranged horizontally is hinged between the two paper connecting arms. The paper connecting press roll is connected with a press roll cylinder for driving the paper connecting press roll to press down or lift up. The paper cutoff mechanism comprises two paper cutoff parts arranged at the frontends of the two paper connecting arms correspondingly and a paper connecting cylinder for driving the paper cutoff parts to press down or lift up. A running paper is wound around the outer side of the paper connecting press roll. The paper connecting press roll is located below the paper cutoff parts. The paper connecting head is located below the paper connecting press roll. The rotary arm uncoiling paper connecting machine can conduct automatic alignment and connection and automatically cut off paper, is accurate in one-key paper connection, high in paper connecting success rate, capable ofautomatically regulating tension of a paper tape, flexible in paper connecting operation and smooth in paper connecting surface.

Rotary arm uncoiling paper connecting machine

The invention relates to the technical field of roll paper gravure press parts, in particular to a novel roll paper gravure press paper-collection traction device. The novel roll paper gravure press paper-collection traction device comprises a rack, a feeding roller and a discharging roller are mounted on the rack, and the discharging roller is located above the feeding roller. A lower swing roller device, a traction device and an upper swing roller device are arranged between the feeding roller and the discharging roller along the roll paper advancing route. A plurality of guiding rollers arefurther mounted on the rack. According to the novel roll paper gravure press paper-collection traction device, the structure is simple, design is reasonable, operation is easy and convenient, the lower swing roller device is used for tension control detection between the rolling traction device and the feeding roller, and the upper swing roller device is used for tension control detection betweenthe discharging roller and the rolling traction device. An observing window is composed of a milk white organic glass plate and an anti-explosion daylight lamp and used for detection observation of the printing quality.

Novel roll paper gravure press paper-collection traction device

The utility model provides a tension detection apparatus for a high-speed gravure printing machine, wherein the tension detection apparatus comprises a cylinder, a swing arm, a pendulum roller and a rotating shaft. A cam is fixed on the rotating shaft. An inductive proximity sensor, disposed beside the cam, is fixed on a wallboard via a sensor rack. There is a gap between the inductive proximity sensor and the excircle of the cam. The tension detection apparatus solves the problems of gear slip and abrasion of pinions in the prior art, achieves accurate information detection, and improves the stability of a tension detection system of the high-speed gravure printing machine. In addition, the apparatus is low in failure rate, high in positioning precision and long in service lifetime, and is suitable for various severe environmental conditions.

Lixiao Zhao

Papers

Tension detection apparatus for high-speed gravure printing machine