33results about How to "Small tension change" patented technology

The invention discloses an underwater cable retractable mechanism, which is composed of a cable, a recovery device and a release device, wherein the recovery device and the release device form the main body of the invention; one end of the cable passes through the release device and is wound inside the recovery device. The invention can ensure that the cables are arranged orderly, neatly and densely in the cable storage space in the underwater environment, and can avoid the cables being entangled with each other in the process of retracting and releasing due to the impact of the water flow, and can also reduce the tension change of the cables and ease the tension. The impact of the cable on the retracting mechanism.

The invention discloses a tension control device for fiber tows. The tension control device comprises a first positioning roller, a second positioning roller, a tension roller, a guide device, a detection device, a controller and a motor speed regulator, wherein the guide device is used for guiding the movement of the tension roller; the detection device is used for detecting position change of the tension roller; the tension roller is positioned in a region between the first positioning roller and the second positioning roller; the axes of the tension roller, the first positioning roller andthe second positioning roller are parallel to one another; the tension roller is connected with the guide device; the detection device is used for feeding detection information of position change of the tension roller to the controller; and the controller is used for controlling the motor speed regulator to regulate the speed of a driving roller motor. By adopting the tension control device, the walking tension of carbon fiber tows can be regulated and controlled effectively, and carbon fibers with uniform and consistent quality can be produced; and the tension control device is suitable for large-scale industrial production, and has very good economic benefit and very wide application prospect.

The invention relates to a production technology of a nylon 6 fine denier network stretch yarn. The production technology of the nylon 6 fine denier network stretch yarn suitable for a hydraulic loom comprises the steps that after a raw POY (Pre Oriented Yarn) is put on a raw yarn shelf, and the POY passes through a first roller, a heating box, a cooling plate, a false twister, a second roller, an oiling device and a winding roller in sequence; the production technology is characterized in that a network device and an auxiliary second roller are arranged between the second roller and the winding roller, the stretch yarn between the second roller and the winding roller passes through the network device, the auxiliary second roller and the oiling device in sequence, wherein the distance between the auxiliary second roller and the second roller is 0.2-0.4m, and the linear speed of the auxiliary second roller is less than that of the second roller. Network points of the nylon 6 fine denier network stretch yarn produced by the technology are distributed uniformly and stably, so that the nylon 6 fine denier network stretch yarn is high in strength, good in cohesion and low in bulkiness.

The invention relates to a mooring device suitable for large water level changes. The mooring device includes a floating structure, a mooring bracket, a sliding device, a buoy box system and a mooring cable. The sliding straight rod of the mooring bracket passes through The sliding hole of the sliding device ensures that the sliding device can carry out relative movement in the vertical direction with the mooring bracket; The tension components in the vertical direction are balanced to keep the slide from sinking to the bottom of the mooring structure. When the water level changes, the position of the floating structure moves up and down with the water surface. Since the sliding device and the mooring bracket can slide relative to each other, the floating tank system does not change its position with the lifting of the floating structure under the constraint of the mooring cable. The tension of the mooring lines has always been within a certain range to avoid excessive displacement of floating structures due to water level changes and excessive mooring loads caused by excessive tension of mooring lines.

The invention discloses a hydraulic cylinder type passive heave compensation system based on a hydraulic transformer. The hydraulic cylinder type passive heave compensation system based on the hydraulic transformer comprises a winch, a pulley, a compensating cylinder, a safety control valve with a rod cavity, a safety control valve without a rod cavity, a hydraulic motor safety valve, a fuel tank,the hydraulic transformer, an energy accumulator, an energy accumulator safety valve, an overflow valve, an oil outlet oil filter, an oil supplementary pump, a motor, an oil supplementary one-way valve, a pressure sensor without a rod cavity, an energy accumulator pressure sensor, a primary motor swash plate tilt sensor, a secondary motor swash plate tilt sensor, a mother ship acceleration sensorand a controller. The hydraulic transformer is installed between the compensating cylinder and the energy accumulator. According to the hydraulic cylinder type passive heave compensation system basedon the hydraulic transformer, the heave compensation is achieved by controlling the tilt angles of variable motors of the hydraulic transformer so as to keep the pressure of the compensating cylinderwithout a rod cavity constant. Compared with a traditional passive heave compensation system, the hydraulic cylinder type passive heave compensation system based on the hydraulic transformer has theadvantages of high compensation accuracy, low installed power, good adaptability and high reliability, and is applicable to working conditions of large depth, large load and changing sea conditions.

The invention discloses a leather cable feeding and winding method. A disc cable feeding opening is vertically and downwards arranged on a disc sending mechanism. The cable clamp initial position of the side face of a winding disc is located in the clockwise 90-degree direction of the disc cable feeding opening; a disc is conveyed to the designated position on the disc sending mechanism, the disc is lifted and clamped through a lifting mechanism and a cable disc clamping and rotating mechanism, and the cable disc clamping and rotating mechanism drives the disc to rotate clockwise by 90 degrees so that a cable clamp can be located over the winding disc; a transverse cable arranging mechanism and the cable clamp act to conduct cable catching, a cable is clamped in the cable clamp and then rotates by 90+alpha degrees, and therefore the cable is right located at the position of the disc cable feeding opening; and the transverse cable arranging mechanism moves towards the inner side of the winding disc and drives the cable disc clamping and rotating mechanism to clockwise drive the winding disc to rotate to conduct winding. The leather cable feeding and winding method suitable for mechanical operation is provided, the cable feeding and catching success rate is high, cable cracking or deforming caused by sudden tension changes is avoided, and meanwhile the winding efficiency is improved.

The invention relates to the technical field of electric core production, in particular to a winding needle and a winding method for improving the deformation of a wound electric core. The use of a circular winding needle makes the tension change of the electric core smaller and more uniform during the winding process, which can improve The internal deformation of the wound battery reduces the occurrence of insufficient internal reaction or lithium precipitation in the battery after formation, and improves battery performance.

The invention discloses a screen pulling stress releasing technology. The technology specifically comprises the following steps: 1) adding an infrared heating technology while standing after radial and transverse stretching of a silk screen; and 2) selecting an infrared heating device of which the released radiation frequency is close to molecular vibration frequency of a silk screen body so as torealize resonance absorption, and thus accelerating the releasing of the stress of the silk screen body. According to the technology adopting the abovementioned mode, the screen stretching time can be greatly decreased, so that the screen stretching efficiency can be greatly improved, the production cost is decreased, and the stress of the silk screen can be quickly fully released; the silk screen in later preparation process is high in stability and low in tension variation value, so that the preparation efficiency and the yield can be greatly increased; the silk screen is small in deformation, extension and contraction during printing, so that the service life is greatly prolonged, the printing quality is greatly improved, and as a result, the screen printing plate market competitiveness can be greatly increased.

The invention provides a woof-intersecting method and a device thereof for a weaving machine. The method utilizes the motion phase difference between a woof-feeding gripper head and a woof-receiving gripper head, enables the woof-receiving gripper head to move to a limit position in the advance direction and enables yarn brought by the woof-feeding gripper head to get across a yarn-hooking head of the woof-receiving gripper head so that the woof-receiving gripper head starts to retreat, the woof-feeding gripper head still advances to a limit position in the advance direction to finish yarn intersection before the woof-feeding gripper head retreats until the yarn is finished. The device comprises a woof-feeding mechanism and a woof-receiving mechanism which are respectively arranged at both sides of a weaving machine main shaft, and a relative mounting angle between the weaving machine main shaft and a woof-feeding main shaft fixing part at one end of the weaving machine main shaft is larger than a relative mounting angle between the weaving machine main shaft and a woof-receiving main shaft fixing part at the other end of the weaving machine main shaft. The invention enables the tension of the yarn to have little change during the yarn intersection, does not influence the detection of a yarn-stopping device, improves the success rate of the yarn intersection, reduces false yarn stops due to the high-speed motion of the weaving machine and can improve the rotating speed of the weaving machine so as to improve the production efficiency.

The invention provides a cold pad-batch dyeing machine for knitted fabric.The cold pad-batch dyeing machine is characterized by comprising an open-width cloth inlet unit, a dust suction unit, a cooling unit, an edge unfolding unit, a dyeing unit, a cloth outlet unit and a moving and rolling unit.The open-width cloth inlet unit is arranged on the upper side of the dust suction unit and the cooling unit.The dust suction unit is arranged on the left side of the cooling unit.The cooling unit, the edge unfolding unit, the dyeing unit, the cloth outlet unit and the moving and rolling unit are sequentially arranged from left to right.An open-width processing mode is adopted, the structure is compact, the knitted fabric is effectively prevented from being wrinkled or crimped in the processing process, tension changes are small in the deformation process of the knitted fabric, and the effect of even dyeing can be achieved.According to the cold pad-batch dyeing machine, low-tension control can be effectively carried out over the knitted fabric in the whole drying link; all the technological processes are short, the utilization rate of dyes can be greatly improved, water saving and consumption reducing are achieved, production cost is reduced, and environmental pollution is small.