51results about How to "Controllable tension" patented technology

The invention discloses a mobile film winding machine which comprises a forklift body, an electric cabinet, a fixed support frame, a rotating mechanism, a film tension control mechanism, a film up-and-down moving frame, a film up-and-down moving motor and a film cutting and pressing mechanism, wherein the rotating mechanism is arranged at the tail end of the fixed support frame; the film up-and-down moving frame is movably arranged on the fixed support frame; the film tension control mechanism is arranged on the film up-and-down moving frame; the film up-and-down moving motor drives the film up-and-down moving frame to rise and fall; and the film cutting and pressing mechanism is arranged on the fixed support frame. According to the mobile film winding machine, a mobile forklift is adopted, a film is rotated upwards and wound around cargo through the rotating mechanism and a lifting mechanism, the winding efficiency is high, and the use of the mobile film winding machine is not limited and is convenient; manual operation is not needed, so that the labor intensity of workers is low, and the labor cost is saved; the film tension is controllable, the packing effect is better, and the cargo cannot become loose easily; the cargo does not need to be rotated, so that a great amount of electric energy is saved; and meanwhile, the height of the cargo is detected through photoelectricity, the utilization ratio of the film is high, and the use cost of the film is low.

The process of producing superfine full polyester fiber blanket includes the following steps: preparing DTY yarn material, weft knitting, dyeing or printing, opening and stoving, fixing color, finishing, heat setting, back pilling and finishing, clipping, and sewing to form the blanket. The production process features the re-networking of DTY yarn before weft knitting to constitute single strand high F superfine denier yarn, and this can reduce broke filament, and result in easy control of feeding tension, homogeneous tension and density. The present invention can produce high quality full polyester fiber blanket with fluff height of 4.5-12 mm, unit area weight of 300-500 g/sq m, plumpy fluff.

A coil winding paying-off device comprises a workbench, an upper tension paying-off mechanism, a lower tension paying-off mechanism, a rack and a wire crossing and reversing mechanism. The upper tension paying-off mechanism is installed on the rack which is installed on the workbench, the lower tension paying-off mechanism is installed on the workbench and located below the upper tension paying-off mechanism, the wire crossing and reversing mechanism is installed on the workbench, and the workbench is installed on a horizontal moving sliding table. According to the coil winding paying-off device, the upper tension paying-off mechanism and the lower tension paying-off mechanism provide independent tension output for two sets of paying-off coils respectively, the wire crossing and reversing mechanism conducts left and right crossing and reversing on wires of each layer in the coil winding process, and the horizontal moving sliding table adjusts the double tension paying-off mechanisms and the wire crossing and reversing mechanism to move left and right in the coil winding process; by means of the coil winding paying-off device, the tension of all the wires in the coil winding process is more controllable, crossing of the wires among the layers is more convenient, and the operation is easier.

The invention provides an enameled wire unwinding device which is simple in structure. By the enameled wire unwinding device, equipment can be flexibly moved, the problem that quality of enameled wires is affected by incapability of providing constant tension due to excessively small size of existing tension sheaves is solved, use of unwinding discs with different specifications can be realized, and limitation of production is avoided.

The invention relates to a sheath metal belt unwinding device applied to production of an optical cable. The sheath metal belt unwinding device comprises an air cushion cover, an air cushion, a spring, a baffle plate, an air cushion cover flange, a magnetic powder brake, a transmission shaft bearing pedestal, a lifting plate, an outer sleeve bearing pedestal, an outer sleeve connection flange, anouter sleeve, a plurality of expansion sleeve inclined blocks, a clamping spring and an inner sleeve, wherein one end of a transmission shaft is connected with the baffle plate in a rotatable manner;the air cushion cover is arranged at the outer end of the baffle plate; one side of the magnetic powder brake, which is opposite to the baffle plate, is connected with the air cushion cover flange, and the other side of the magnetic powder brake is provided with the lifting plate; opposite sides of the magnetic powder brake and the lifting plate are connected with each other through the transmission shaft bearing pedestal; the transmission shaft is supported on the bearing pedestal through a corresponding bearing; the outer sleeve bearing pedestal is connected to the other side face of the lifting plate; the outer sleeve connection flange is sleeved on the transmission in a hollow manner; the outer sleeve connection flange is connected with the outer sleeve; the inner sleeve is connected to the other end of the transmission shaft; and a plurality of holes in the circumferential direction of the outer sleeve are correspondingly inserted with the expansion sleeve inclined blocks. The sheath metal belt unwinding device has the advantages of small impact, low abrasion, simple operation, safety, reliability and compact structure.

The invention discloses a direct heat setting method and device for two-for-one twisting, belonging to the technical fields of textiles. A heat setting box is additionally arranged above a two-for-one twisting spindle of a two-for-one twisting machine, twisted yarns are directly subjected to heat setting and then subjected to winding setting. Twisted monofilaments are subjected to heat setting by means of the direct heat setting process for two-for-one twisting at constant temperature and constant speed, so that the setting effect is improved. A technological process of subsequent vacuum heat setting for two-for-one twisting in the prior art is omitted, so that labor and electricity are saved.

The invention discloses a method for controlling cotton felt tailoring size precision, and belongs to the field of cotton felt tailoring methods. The method for controlling cotton felt tailoring sizeprecision can achieve production technology automation. A reeling and unreeling device can achieve automatic unreeling and unreeling of reeled cloth, a horizontal tailoring device can achieve horizontal-direction tailoring of the cloth, the tailoring thickness is adjustable, and a vertical tailoring device can tailor the cloth into the needed shape. In the production process, an integrated vacuumdust removal device body is adopted, it is ensured that waste fiber and dust generated in the tailoring process are automatically collected, and green and environment-friendly production is ensured. In the vacuum dust removal device body, the principle of heat expansion and cold shrinkage is adopted for achieving the following operation: in the normal work process, gathering fiber capturing hooksare in a bending state, so that felt fiber scraps are conveniently captured, in the process that the fiber capturing hooks are cleaned through hot water, the fiber capturing hooks are in a vertical state, and accordingly the felt fiber scraps captured by the fiber capturing hooks are conveniently cleaned.

The invention discloses a spring curtain lifting and collecting mechanism which comprises a bottom frame, a servo motor, a first coupler, a collecting box and a fixing block, the servo motor is installed on the outer wall of one side of the bottom frame, a rotating shaft is installed at the output end of the servo motor, and the first coupler is installed at one end of the rotating shaft; fixing blocks are mounted on the two sides of the top of the bottom frame; and two sets of collecting boxes arranged side by side are installed on the back face of the bottom frame, a curtain collecting roller is installed on the outer wall of one side of one set of collecting boxes in a penetrating mode, two sets of steel rope collectors arranged side by side are installed on the outer surface of the curtain collecting roller, and steel rope guide mechanisms are installed on the inner walls of one sides of the two sets of collecting boxes. According to the invention, a group of motors are adopted for control, the difficulty in control can be reduced, the opening force of the curtain sheets can be controlled to a certain extent through the springs, the curtain dust removal operation can be carried out in the opening process of the curtain, and a part for dust removal is clamped and connected with the combined frame body, so that the detachable performance is realized.

The invention relates to a device for winding an element consisting of at least one elongated filiform strand on a winding element, said device comprising a frame having at least the following elements: for said elongate filiform element The inlet, and the winding element driven in rotation around the winding shaft, the device also includes at least a driving device for rotationally driving the winding element. According to the invention, the winding device is characterized in that twisting means are mounted on said frame, said twisting means being directed towards said The filamentary element imparts one or more turns per unit length (twisting in the case of a single strand of elongate filamentary element, or twisting in the case of multiple strands of elongate filamentary element).

The invention relates to a composite material space truss structure and a preparation method based on a curing forming mold, relates to the technical field of space stations, and solves the technicalproblems that in the prior art, a truss structure of a space station is formed in a multi-round-pipe mode through equal-tension winding, the structural form is single, the length of the structure is limited by the specification of a winding machine, short-pipe and short-rod splicing is usually achieved through a metal adapter, the damage risk of composite material bonding tapping is increased, andthe effective load is reduced. The composite material space truss structure is technically characterized by comprising a square pipe body with the wall thickness being of a three-layer structure, 12Kcarbon fibers are adopted in an inner layer and an outer layer, and 50K large-tow carbon fibers are adopted in a middle layer. The truss structure has the beneficial effects of avoiding complex splicing and assembling of the short pipes and the short rods, reducing the risk and the weight of the connecting ends, further improving the effective load and improving the truss foundation for a large space structure.

The invention discloses a color tape slitting device with a leader tape automatic sticking function. The color tape slitting device comprises a small-roll color tape roll assembly, a primary-roll color tape feed assembly, a leader tape feed assembly and a head-tail tape slitting assembly. The small-roll color tape roll assembly is used for slitting a primary-roll color tape and rolling a slit small-roll color tape, the small-roll color tape roll assembly is provided with a film cutter combining part and receiving shafts, and arrayed film cutters are arranged on the film cutter combining part.The primary-roll color tape feed assembly is provided with a tension adjusting rod, and the primary-roll color tape is arranged in the tension adjusting rod in a penetrating mode. The leader tape feedassembly is used for sticking a leader tape to the tail end of the small-roll color tape, and tape pressing wheels are arranged on the leader tape feed assembly. When the two or more sets of tape pressing wheels are arranged, the two sets in the tape pressing wheels are perpendicularly and symmetrically arranged, and the two sets of tape pressing wheels are the first tape pressing wheels and thesecond tape pressing wheels. The head-tail tape slitting assembly is provided with a pressing plate, and the pressing plate is fixedly connected with the head-tail tape slitting assembly. In this way,the production cost is saved, and the work efficiency of the device is more improved.

The invention discloses a preparation method of black colored ribbon Glencheck double-faced woolen cloth. The preparation method comprises the following steps: preparing lantern yarn and the wrap yarn; using the wrap yarn as inserted yarn and interweaving the wrap yarn with black yarn and white yarn to manufacture the black colored ribbon Glencheck double-faced woolen cloth, wherein the wrap yarnis formed by wrapping lantern yarn around space-dyed nylon filaments. The invention further discloses equipment for producing the wrap yarn in the black colored ribbon Glencheck double-faced woolen cloth, so that the tension during filament feeding can be controlled, and thus the tension of the filaments can be the same as that of staple fibers, and the wrapping effect of the filaments is better.

The invention provides a novel four-joint J-shape-winding drum integrated laying system. The laying system mainly comprises a laying tower, a winding drum, a laying tower angle adjusting system, a straightening system, a pipe laying and conveying system and key equipment for pipe laying, wherein the laying tower angle adjusting system comprises A frames, angle adjusters, hydraulic cylinders and angle adjuster connecting shafts; the straightening system comprises a correcting wheel, a straightener and a straightening roller; the pipe laying and conveying system comprises a horizontal conveying system, a loading arm and an elevator; the key equipment for pipe laying comprises a tensioner and a moving platform. The laying system can complete pipe laying work of pipes in various sizes, materials and diameters at various water depths; not only can the total use amount of equipment be reduced, but also laying manners can be switched timely according to actual laying requirements, and under the condition that stress to the pipe is reduced, the quality and the efficiency of pipe laying are improved, the economy is improved, and the system has quite high comprehensive operation capacity.

The invention discloses large-capacity falling-barrel-type constant tension dynamic line storing equipment. A line storing equipment consists of a line-feeding falling barrel, a falling-barrel flexible mechanical arm, a line-storing barrel body, a line discharging barrel, a discharging-barrel flexible mechanical arm and an equipment base, the feeding and discharging barrels rotate synchronously with the corresponding flexible mechanical arms, the rotating speed of the feeding and discharging barrels can be adjusted according to the tension requirement, and a line storing barrel is fixed between the feeding and discharging barrels through a bearing and relatively fixed to the base through a fixed magnet in the middle of the equipment base. The large-capacity falling-barrel-type constant tension dynamic line storing equipment has the beneficial effects that by arranging the flexible feeding and discharging barrel arms, line is naturally bent, the line cannot be damaged, and the line storing and straightening functions are achieved; barrel feeding and discharging modes are adopted, tying and untying of the line in the line storing process appear in pairs, the phenomenon of irregular line tying is eliminated, the stability of the line structure is ensured accordingly, regular constant tension line arranging of the stored line on the line storing barrel is achieved, and the first-infirst-out line storing and releasing principle is effectively achieved accordingly, so that the tension of the line is capable of being controlled in the line storing process.

The invention belongs to the technical field of tensioning of workpieces through electric screw tensioning shafts in high-speed rotating machines, and discloses a mechanism for tensioning the workpieces through the electric screw tensioning shafts, a regulation and control method and application. And the cone nut pushes the tensioning claws in the inclined plane guide groove to stretch out and retract along the peripheral surface to realize tensioning or loosening in the front-back movement process. According to the mechanism for tensioning the workpiece through the electric screw tensioning shaft on the high-speed rotating mechanism, due to the fact that a screw nut kinematic pair has the self-locking capacity and is large in pushing force, rapid tensioning of the workpiece is guaranteed, and tensioning is reliable. The mechanism for tensioning the workpiece through the electric screw tensioning shaft adopts a motor to drive a screw nut kinematic pair to adjust the tensioning force, and the tensioning force can be known and controllable. The defects existing in the using process of the expansion shaft, the using process of a manual mechanical expansion shaft and the using process of an electric drive expansion shaft are overcome.