32results about How to "Ensure constant tension" patented technology

The invention discloses a gravure printing machine. The gravure printing machine comprises a winding group, a unwinding group and a middle color group, wherein the groups are connected together though cross beams and based which are fixed on wall boards of the groups, an operating corridor is arranged outside the wall boards, the winding group and the unwinding group are separately provided with a winding device and an unwinding device, the middle color group owns a plurality of groups, each color group is provided with a coining device and an oven heating device, and the coining devices of the color groups are connected together through transmission shafts in a synchronous manner. The gravure printing machine has good appearance and quality, compact structure and high installation precision, can ensure continuous roll-changing without stopping the machine, and is characterized by energy saving, high efficiency and low consumption.

The invention relates to a full-automatic die cutting machine for a pole piece. The full-automatic die cutting machine comprises a front die cutting mechanism and a rear die cutting mechanism, wherein the front die cutting mechanism comprises an unreeling device, a deviation correcting sensor, a first tension regulating device, first transition rollers, a deviation correcting device and a pole piece blanking cutting die device, and the rear die cutting mechanism comprises a main driving device, a length measuring device, second transition rollers, a second tension regulating device and a reeling device; a first material storing device is arranged between the deviation correcting device and the pole piece blanking cutting die device, and a second material storing device is arranged between the main driving device and the length measuring device; the first material storing device comprises a first storage piece floating roller and a first lifting mechanism, and the first storage piece floating roller can be driven to move upwards or downwards by the first lifting mechanism; the second material storing device comprises a second storage piece floating roller and a second lifting mechanism, and the second storage piece floating roller can be driven to move upwards or downwards by the second lifting mechanism. Through the use of the full-automatic die cutting machine disclosed by the invention, the pole piece blanking efficiency is improved, and the efficiency of blanking pole pieces of lithium batteries is ensured.

The invention discloses a static constant-tension control system for reciprocation high-speed wire traveling. The system comprises first guiding wire wheels A-D, second guiding wire wheels A-B, a wire entering guiding pulley, a tension controller, a tension sensor, a first wire feeding wheel taking-up and paying-off device, a second wire feeding wheel taking-up and paying-off device, a first constant tension adjusting device and a second constant tension adjusting device, wherein the tension sensor, the first wire feeding wheel taking-up and paying-off device, the second wire feeding wheel taking-up and paying-off device, the first constant tension adjusting device and the second constant tension adjusting device are respectively connected with the tension controller. The structural design is ingenuous and reasonable, the wire feeding wheel structure is adopted for replacing traditional wire winding drums, the problem that because the wire drums are not concentric, a wire electrode resonates and shakes is solved, it is effectively guaranteed that the tension of the wire electrodes is constant, and machining efficiency is improved; moreover, original positions of a tension wheel and the wire electrode do not need to be adjusted, people only need to control rotation speed of a servo motor, and therefore operation is easy; meanwhile, a symmetrical structure design is adopted, so that matched wire loosening and reciprocation operation on the two sides are achieved, the problem that because single-side wire loosening and reciprocation operation are adopted, the tension is not constant is effectively solved, constancy of the tension is further kept, and machining precision is improved.

The invention relates to the technical field of carbon fiber spreading, in particular to a yarn winding system. The yarn winding system comprises an unwinding device, a yarn translation device and a flat plate winding device, wherein the unwinding device is used for unwinding yarns on a yarn barrel under constant tension; the yarn translation device is used for changing the positions of the yarnsreleased from the unwinding device in the direction perpendicular to the conveying direction of the yarns; and the flat plate winding device is used for winding and forming the yarns; a weight is hungbetween two yarn storage rods, and the yarn tension is ensured to be constant while yarn storage is carried out by using the weight of the weight, so that the problem that the yarn tension is not constant due to the fact that a core mold is plate-shaped and the yarn tension is not constant is solved, and the yarns uniformly wind the plate-type core mold. Meanwhile, the invention further relates to a yarn winding control method. According to the control method, the moving speed of a yarn guide part and the rotating speed of the plate-type core mold are reasonably set, so that the uniform and seamless winding of the yarns on the plate-type core mold is realized, and the mechanical property of a finally-formed carbon fiber product is good.

The invention relates to a film coating machine, in particular to a two-sided automatic plate-alignment film coating machine, which is provided with a basic cloth delivery-furl mechanism, a first basic material delivery-furl mechanism, a first composite mechanism, a second basic material delivery-furl mechanism, a second composite mechanism, a first color mark sensor, a second color mark sensor, aprocessor, a servo controller, and a servo motor; the second basic material delivery-furl mechanism is provided with a second basic material delivery-furl shaft, a second pressing roll, and a secondbasic material guiding roll which are driven by a second basic material delivery-furl motor; the servo motor drives the second basic material guiding roll; the processor is connected with the servo controller; and the servo controller is connected with the servo motor. The film coating machine has the automatic plate-alignment function of two-sided design, and the delivery-furl composite speed israpid, the productivity effect is high, even though the basic material adopts an OPP film with very thin thickness, the highest delivery-furl composite speed of the OPP film can reach 80 meters per minute, the relative displacement of the color mark combined on the OPP films of the two sides of the same plastic braided cloth can be controlled within 3 mm.