41results about How to "Achieve tension control" patented technology

The invention discloses a multi-shaft synchronous control device, which comprises an unwinding roller, a transmission roller, a winding roller and a control device, wherein the control device comprises a winding control device for controlling the winding roller, a transmission control device for controlling the transmission roller and a main controller for controlling the running of the parts. By adopting the multi-shaft synchronous control device, when tension control experiment teaching and scientific research are developed, a brake device and a tension controller can be eliminated, and servo synchronous driving and tension control of a plurality of motors are realized; the adjustment time and a space occupied by equipment are saved; and the multi-shaft synchronous control device controls the parts precisely.

The invention relates to a modularized wire pavement head for automatically paving a composite material and a method. A six-axial robot-based platform design is used for paving a composite material member. The modularized wire pavement head is mainly characterized in that the wire pavement head is based on a completely modularized design, and comprises a wire coil mounting module (C), a gasket paper collecting module (D), a tension detection module (B), a tow steering module (A), a shearing, clamping and tow-reconveying module (E), a heater (F), a compression roller and the like. The modularized wire pavement head has the capability of simultaneously paving 8 bundles of composite material presoaking yarns; each tow is independently controlled; shearing of the tows and reconveying after shearing can be independently carried out; on the basis of rapid-exchange structure design, mounting and dismantling of the wire pavement head and mounting and exchanging of the tows can be conveniently carried out; on the basis of bared yarn duct design, cleaning of the wire pavement head can be conveniently carried out; and the widths of the used composite material presoaking yarns are 3.17mm, 6.35mm and 12.7mm.

The invention discloses a corrugated paper production line control system. The corrugated paper production control system comprises a plurality of management systems for conducting operation management on corrugated paper production lines, a control center connected with the management systems through Ethernet and a PLC control system in communicating connection with the control center. The PLC control system comprises a speed control system, a tension regulation and control system, a pressure regulation and control system and a material change control system, wherein the speed control system achieves regulation and control on the operation speeds of the production lines, tension control of paper of the production lines is achieved through the tension regulation and control system, regulation and control on thermal pressures of corrugation rolls are achieved through the pressure regulation and control system, and corrugating base paper change is achieved through the material change control system. The corrugated paper production line control system achieves management and control integration, and production efficiency and production quality are improved.

A method for dynamically controlling a loop angle of a hot continuous rolling mill adopts a strip steel rolling force detector, a strip steel speed detector, a loop angle detector, a strip steel tension detector, a basic automatic level control machine and a process control machine to conduct dynamic control on angles of six loops among seven continuous rolling mills according to the set process requirements, accordingly the stability of the loops during strip steel throwing is improved, specifically variable-angle control before strip steel throwing and a unary function loop angle compensation method are adopted to achieve continuous dynamic control in the control process according to change of angle and tension control, meanwhile synchronous and dynamic tension control is achieved in the tension control process according to angle change, and the stability of the loops in the strip steel throwing process is improved greatly.

The invention discloses a solar energy tracking device which is characterized by comprising a first base, a first hinged support, a primary beam , an secondary beam, a slide rail column, a second hinged support, a second base, inclined struts, a screw rod, a lead screw nut, a C-shaped slide block and a photovoltaic panel, wherein the secondary beam is welded on the primary beam; the photovoltaic panel is mounted on an upper plane of the secondary beam; the primary beam is hinged with the first hinged support and the C-shaped slide block through a T-shaped shaft; the C-shaped slide block in in clearance fit with an inner slideway of the slide rail column; the lead screw nut is fixed in the C-shaped slide block; the screw rod is screwed into the lead screw nut; two ends of the screw rod are mounted in the slide rail column through a slide bearing; a shaft and the inclined struts are welded at the lower part of the slide rail column; and the side rail column is hinged with the second hinged support through the shaft. According to the solar energy tracking device, the automatic tracking for solar azimuths and the manual tracking for slowly-changing solar azimuths are achieved at low cost.

A cradle type tension pay-off device disclosed by the present invention comprises a threading shaft, a rotating shaft, a cradle frame, a pay-off shaft, a permanent magnet damping regulator and a transmission gear set. The pay-off shaft is connected with and arranged in the cradle frame, the permanent magnet damping regulator is arranged on the cradle frame and is connected with the pay-off shaft via the transmission gear set, and the threading shaft and the rotating shaft are arranged at the two ends of the cradle frame symmetrically. The cradle type tension pay-off device of the present invention is ingenious and reasonable in design, adopts the passive pay-off, can regulate the pay-off speed via the permanent magnet damping regulator, thereby realizing the tension control. Moreover, the cradle type tension pay-off device is arranged on the cradle frame of a stranding machine via the rotating shaft, can swing freely, realizes the back twist pay-off, enables the pay-off actions to be more natural and smooth, a pay-off effect and the working efficiency to be improved substantially and the production cost to be reduced, is good in stranding effect, can guarantee the product quality effectively, is simple, easy and convenient to operate, effectively saves a lot of time and labor, and facilitates the wide popularization and utilization.

The invention relates to a monitoring device with a strip steel tight roll machine set and a monitoring method. The device comprises the tight roll machine set with a transducer (1) and a revolution speed transducer (2) which is connected with the transducer, and the output end of the revolution speed transducer is connected with a preposed processing circuit (3) which is connected with a calculation control module (4), the output end of the calculation control module is connected with a feedback circuit (5) which is connected with the control system (6) of the tight roll machine set. The control method of the system comprises that the revolution speed transducer is used for receiving the linear speed VR of the tight roll and the translational speed V of the metal strip, and the linear speed VR and the translational speed V are output by the transducer; the signal of the revolution speed transducer is conveyed to the calculation control module after the filtering method of the preposed processing circuit; the calculation control module works out the average linear speed VR of the whole tight roll machine set so as to calculate a slippage proportionality factor S according to a formula, the slippage proportionality factor S and a preset value are judged comparatively; a judgment result is conveyed to the control system of the tight roll machine set by the feedback circuit, so as to warn the occurrence of slippage in advance.

The invention discloses a method for manufacturing a pressed film of an equal-plate-breadth holographic mask and a mold pressing device thereof. The method comprises the following steps: detecting the actual plate breadth of the pressed film of the equal-plate-breadth holographic mask in a constant-tension control section, comparing the detected actual plate breadth with the preset plate breadth to obtain a plate breadth difference, adjusting the tension of a variable-tension control section according to the plate breadth difference, facilitating film material of the variable-tension control section to stretch or shrink after entering the constant-tension control section in order to compensate the plate breadth difference and to produce the high-precision pressed film of the equal-plate-breadth holographic mask. The mold pressing device comprises a set of leading-in traction rollers, a set of mold pressing rollers, a set of leading-out traction rollers, a guide roller and a stretch roller, which are arranged in order. The mold pressing device is characterized in that: the mold pressing device is provided with a tension control device which is adjusted to compensate the plate breadth difference caused by changes of temperature and properties of the film material, so as to control the difference within a certain range, thereby improving the precision of the plate breadth and outputting high-precision pressed films of the equal-plate-breadth holographic mask.

The invention discloses a transmission mechanism of a seeder, which comprises an input transmission shaft, a first sprocket wheel, an output transmission shaft, a second sprocket wheel and a chain. The first sprocket wheel is arranged on the input transmission shaft; the second sprocket wheel is arranged on the output transmission shaft; and the chain is arranged on the first and the second sprocket wheels. The transmission mechanism of the seeder is characterized in that: the input transmission shaft is connected with the wheel hub of a tractor rotating wheel; the output transmission shaft is connected with the main shaft gearbox of the seeder; and the chain is provided with a floating tension device. In the transmission mechanism of the seeder of the invention, the input transmission shaft is connected with the transmission mechanism which enables the tractor to go forward, and the transmission chain is provided with the floating tension device which is used for tensioning the loosened chain at the traction section to realize the tension control for the chain, so the synchronization of the input and the output transmission shafts is ensured, the phenomena of miss-seeding and non-uniform seeding density are avoided, and the seeding quality of the farmland is increased.

The invention discloses an improved beaming device for a sizing machine. The improved beaming device is characterized in that warp beam discs are fixedly installed on the outer circle of each of the left end and the right end of a warp beam; a gear is installed and fixed to the part, on the right side of the warp beam discs, on the warp beam through a clamping ring; the part, between the warp beam discs at the left end and the right end, of the warp beam is used for winding yarn on which sizing is conducted; a hole is formed in the center of each of the left end and the right end of the warp beam; spindle heads are installed and fixed in the center holes in the left end and the right end of the warp beam; a first pin shaft on the left side face of a belt wheel is inserted in a first pin shaft hole and a second pin shaft on the left side face of the belt wheel is inserted in a second pin shaft hole; the spindle heads at the left end and the right end of the warp beam are located in a bearing bush at the upper end of a supporting pillar; the lower end of the supporting pillar is welded to a base; adjusting plates are welded to the two sides of the supporting pillar; adjusting screw rods are installed in long slotted holes through nuts; and hooks at the two ends of a belt arranged on the belt wheel in a sleeving manner are hung on hanging rings on the adjusting screw rods. The improved type sizing beaming tension adjusting device is formed.

The invention discloses an automatic replacement device and method for a base plate for numerical control code drilling. The automatic replacement method of the base plate for the numerical control code drilling comprises the following steps that an unwinding motor is controlled to be switched between a position control mode and a tension control mode; after a base plate replacement instruction isreceived, the unwinding motor is controlled to be switched to the position control mode; and after the base plate is replaced, the unwinding motor is controlled to be switched to the tension controlmode. According to the automatic replacement method of the base plate for numerical control code drilling, the actual requirement for automatic replacement of the base plate is considered; by combining the characteristic of flexible switching of control modes of the unwinding driving mechanism and the characteristic of real-time tension control of the base plate, the device has the advantages of being more flexible and higher in universality, real-time tension control over a base plate winding belt can be achieved, and therefore the base plate can be kept in a tensioned state in the code drilling process, and a good code drilling process effect is obtained; and meanwhile, the universal requirements that the base plate replacement interval is accurate enough and the base plate replacement interval parameter is adjustable are met.