43results about How to "Slow down the winding speed" patented technology

The invention relates to a reduction gear for a roller shutter, wherein, the compressed piston of the reduction part can enter into a cylinder connected with one inner end of the roller pole. The invention also relates to a device which folds and unfolds the roller shutter simply and conveniently, in particular to a device which can fold the roller shutter by decreasing the folding speed at a certain section when folding the roller shutter, thereby has the advantages of avoiding noises, collisions and accidents, and easy operation without any limit by age or gender (the young people, the old people or male and female).

The invention provides a yarn accumulating device and yarn winding device provided with the same and aims to reduce a weight of a yarn accumulating roller and realize a quick rotational control of the yarn accumulating roller. A winding unit (2) includes a yarn supplying section (3), a package winding section (4), and a yarn accumulating device (22) arranged between the yarn supplying section (3) and the package winding section (4). The yarn accumulating device (22) includes a cylindrical yarn accumulating roller (40) around which a yarn (y) is wound by being rotated. The yarn accumulating roller (40) is formed of a resin material which is a non-metal material.

The invention discloses an efficient full-automatic cable taking-up and paying-off device. The efficient full-automatic cable taking-up and paying-off device structurally comprises a lifting ring attached lug, a cable coiling device with a controllable rotation speed, a control panel, push-and-pull rods, a direction control rod, a control rod fixing plate, trundles, ventilation openings, trolley wheels, protective covers, an open groove and a coiling drum. The lifting ring attached lug is welded to the upper surface of the cable coiling device with the controllable rotation speed. The push-and-pull rods are embedded into the middle section of the left surface of the cable coiling device with the controllable rotation speed. The control rod fixing plate is welded to the lower end of the left surface of the cable coiling device with the controllable rotation speed. According to the efficient full-automatic cable taking-up and paying-off device, through the arranged cable coiling device with the controllable rotation speed, when the cable is taken up, if the cable bears excessively large tension, the rotation speed of a compound rotating disk 231 can be controlled, so that the taking-up speed is controlled, and the cable is prevented from being damaged; and during taking-up, the cable can be coiled into the coiling drum in tidy, and taking-up is rapid and convenient.

The invention discloses an efficient charging pile for a new energy vehicle, and relates to the technical field of automobile charging piles. In order to improve the safety during charging, The charging pile specifically comprises two main bodies symmetrically installed on a base, operation screens are arranged on the outer walls of one sides of the two main bodies correspondingly, second supports are fixed to the outer walls of the adjacent sides of the two main bodies through screws, handles are clamped to the second supports correspondingly, the handles are connected into internal circuits of the main bodies through roll type charging wires, and charging heads are arranged at one ends of the handles; and the circumferential outer wall, close to the charging head, of the handle is in threaded connection with a protective cover. By arranging the protective cover, the annular air cushion and other structures, the protective cover can be rotated to the handle through threads according to needs, then the charging head and a charging port of an automobile are protected, the automobile charging device is particularly suitable for external rainy and snowy weather, water can be effectively prevented from entering, and the size of the annular air cushion can be adjusted through the air bag according to actual conditions; therefore, the sealing performance is improved.

The present invention relates to a method and a device for determining the necessary speed of rotation of a coil drive roller, which particularly reduces rotation speed fluctuation of crossly wound coils (8) when a winding stroke is started. In a station (2) of a spinning machine (1), besides cylindrical crossly wound coils (8), conical crossly wound coils are manufactured in a so-called twisting winder (4). For the uniform roller structure, feeding of a constant winding tension to the yarn (7) is very important. Winding tension fluctuation can cause yarn fracture besides yarn layer loosening, and affects continuous spinning and winding processes. For preventing this effect, the invention prescribes that: angular momentum of the crossly wound coils (8) is detected through the sensor and calculated according to time sequence of a corresponding driving diameter before paving or splicing, so as to select the rotation speed of the coil drive roller (10) before the winding stroke.

The invention discloses a material strap winding device. The winding device solves the problem that a traditional winding device is low in material strap winding quality and low in working efficiency.The winding device comprises a winding shaft, the winding shaft is connected with a power device, a material winding pipe used for winding a film is arranged on the winding shaft, the winding shaft and the material winding pipe are concentrically matched, a friction type differential device is arranged between the winding shaft and the material winding pipe, the winding shaft drives the materialwinding pipe to rotate through the friction type differential device and is provided with a rocker arm loading and unloading mechanism. According to the winding device, the friction type differentialdevice drives the material winding pipe to rotate for material winding, when a relatively thick material is wound around the material winding pipe, the tightening force of the material winding pipe isincreased, the friction type differential device and the material winding pipe slide relative to each other, the winding speed of the material winding pipe is decreased, the tightness degrees of material straps with the thickness difference wound around the winding pipe are the same in unit time, so that the winding quality can be ensured, the winding shaft can be directly disassembled through the rocker arm loading and unloading mechanism after winding is completed, quick unloading can be carried out, and the working efficiency can be guaranteed.

The invention discloses a winding device. The winding device comprises a first fixing frame, wherein the first fixing frame is provided with a fixing shaft of a winding-up roller and a plurality of winding heads, wherein the winding heads are mounted on the fixing shaft, the winding heads are provided with an adjusting mechanism used for adjusting the rotation speed of a driving wheel, and the rotation speed of a winding shaft is greater than the rotation speed of the winding-up roller. The adjusting mechanism is used for changing the rotation speed of the driving wheel so as to change the rotation speed of the winding shaft, and the winding shaft and the winding-up roller are arranged in a differential mode, so that the winding speed of a winding shaft is greater than the winding-up speedof the winding-up roller; and then the winding shaft generates a tensile force to a film, so when passing through winding rubber of the winding-up roller, the film generates a sliding friction forcewhich is opposite to the tensile force in direction, and therefore the film is always in a tension state during the winding so as to enable film rolls to stay compact. In a similar way, the adjustingmechanism can enable the film rolls of the winding heads on the fixing shaft to stay compact during winding process, thus the use of a cylinder for adjusting can be avoided, and meanwhile each windinghead is not affected by one another in winding.

The invention provides a high-temperature-resistant olive modified polyamide fiber. The content of an olive leaf extract in the fiber is 1.0%-5.0%. The preparation method of the polyamide fiber comprises the following steps of 1, preparing olive leaf modified double-layer microcapsules; 2, preparing olive leaf functional modified master batches; 3, conducting mixing and melting; and 4, conductingspinning and post-processing. The olive modified polyamide fiber prepared by the method contains olive leaf extract components, particularly oleuropein and hydroxytyrosol in the olive leaf extract, isa natural additive with natural antibacterial and anti-ultraviolet functions, can provide more functions, and meets the requirements of different consumers.

The invention relates to the technical fields of textile equipment and metal fiber infrared combustion, and particularly discloses an inner ring type metal fiber infrared radiation combustor for yarn production. The inner ring type metal fiber infrared radiation combustor for yarn production can process yarn in an infrared thermal radiation mode and combust yarn hairness exposed out of the surface of the yarn. The inner ring type metal fiber infrared radiation combustor for yarn production is mainly applied to a production process of the yarn. For yarn finished products prepared through the inner ring type metal fiber infrared radiation combustor, fibers cohere closely, the yarn is smooth, free of the hairness and good in gloss, and textiles are clear in grain and good in wearability.

This invention relates to a method for rewinding the dyeing bobbin (4) onto a cross winding bobbin (11), wherein at the time of rewinding beginning and/or ending, the yarn (30) to unwrap from the dyeing bobbin (4) is unwrapped a defined length at a winding speed which is less than the winding speed arranged for the yarn (30) to rewind.

The invention relates to the technical field of adhesive tape packing tapes, and discloses a constant-speed winding device for avoiding winding stall in the field of adhesive tape packing tapes. The constant-speed winding device comprises a rotating shaft, wherein a mounting hole 1 is formed in the front surface of the rotating shaft; a mounting hole 2 is formed in the front surface of the rotating shaft; a connecting rod is interactively connected into the mounting hole 1; one end, far from the mounting hole 1, of the connecting rod is fixedly connected with a contact; and the outer side of the connecting rod is movably connected with a sleeve. In the constant-speed winding device for avoiding winding stall in the field of adhesive tape packing tapes, through cooperative use of a variableresistance mechanism and the contact, when the winding speed of a packing tape winder is suddenly accelerated to cause stall, the resistance is automatically increased, so that the winding speed of the winder is decelerated; and when the winding speed of the winder is decelerated, the resistance is automatically reduced, so that the winding speed of the winder is accelerated, the effect of alwayskeeping constant-speed winding is achieved, the working efficiency is improved, the space utilization rate is increased, and the benefit is prevented from being influenced to a certain extent.

The invention discloses an optical fiber processing method, which comprises a gas line detection process, wherein the gas line detection process comprises the following steps: 1) transmitting a laser beam perpendicular to an optical fiber to the optical fiber through a laser transmitter, and receiving the laser beam through a laser receiver; 2) when the intensity of the signal received by the laser receiver changes suddenly, judging that the optical fiber has a gas line, recording the initial position of the gas line, and controlling winding equipment to reduce a winding speed; and 3) when the intensity of the signal received by the laser receiver is recovered, judging that the optical fiber has no gas line, recording the end position of the gas line, and recovering the winding speed of the winding equipment after the gas line section of the optical fiber is completely wound on a winding disc. According to the optical fiber processing method, by setting the additional gas line detection process, the appearance position and the end position of the gas line can be detected online, so that the gas line section can be conveniently processed in the later period, the winding speed of the winding equipment can be controlled to be reduced when the gas line is detected, the tension of the optical fiber is reduced, and the optical fiber is prevented from being broken due to the gas line.

The invention provides a speed reducing mechanism. The speed reducing mechanism comprises a shell, a moving part, a rotating piece and a damping piece; wherein the movable piece is movably arranged ona spiral track on the first surface of the shell. The rotating piece is rotatably coupled to the shell, the rotating piece is provided with a second surface opposite to the first surface, the rotating piece comprises an actuating part which is arranged on the second surface and abuts against the moving piece, and when the rotating piece rotates relative to the shell, the actuating part drives themoving piece to move in the spiral track. The damping part is selectively arranged on the rotating piece and corresponds to the speed reduction section of the spiral track, and when the moving pieceenters the speed reduction section, the damping part abuts against the moving piece so as to reduce the rotating speed of the rotating piece relative to the shell. In one embodiment, the speed reducing mechanism is combined with the winding device to form the winding device with a speed reducing function, so that the speed can be properly reduced when the take-up end part is close to the shell.

The invention relates to a noctilucent polyester, a braided layer with the polyester and a fire hose with the braided layer, and aims at solving the technical problem that polyesters and fire hoses inthe prior art have no noctilucence. Raw materials of the noctilucent polyester comprise polyester chips, a noctilucent material, a flame retardant, a plasticizer and titanium dioxide, the obtained polyester has good flame retardance and corrosion resistance and also has a good noctilucent effect, and the braided layer made of the polyester and the fire hose with the braided layer also have good noctilucence.

The invention relates to the technical field of mechanical engineering, in particular to a winding device for engineering machinery. The device comprises a winding frame, a winding mechanism is arranged at the top of the winding frame, a rust removal mechanism is arranged at one side of the winding frame, and the winding mechanism comprises a rotating motor located on the outer wall of the winding frame. The output end of the rotating motor penetrates through the winding frame and extends to the inner side of the winding frame, the output end of the rotating motor is connected with a driving gear, and one side of the driving gear is fixedly connected with a rotating cylinder. The winding device has the beneficial effects that the driving gear drives a driven gear to rotate, a rotating shaft is beneficial to providing of supporting force for the driven gear during rotation, the driven gear can drive a connecting column and a winding cylinder to rotate, the winding cylinder drives a steel wire rope to wind, when the winding speed needs to be changed, a starting switch is turned on, a lifting column drives an arc-shaped plate to ascend, a friction layer in the arc-shaped plate makes contact with a speed reduction rod, and the rotating speed of the speed reduction rod is reduced under the friction effect.

The invention discloses an improvement method of finishing and trimming of a double-zero foil material. According to the improvement method, the shearing overlapping amount of a cutting disc and the winding speed and the winding tension of a winding sleeve are adjusted according to the plate type condition of a material roll, when the measurement result is within the range of a standard plate type, it can be guaranteed that the winding sleeve conducts winding evenly, cutting of the cutting disc is free of vertical edges, and the material roll is wound normally without sticking damage; and when the measurement result exceeds the range of the standard plate type, vertical edges at the edge part of the material roll are reduced by reducing the shearing overlapping amount and reducing the rolling speed and the rolling tension of the rolling sleeve, and the phenomenon of adhesion between adjacent material roll layers due to vertical edge accumulation is improved.