165results about How to "Stable unwinding" patented technology

The invention discloses an adjustable take-up and pay-off stand, and belongs to the field of mechanical equipment. The adjustable take-up and pay-off stand comprises a fixed part and a rotating part, wherein the fixed part comprises a first pedestal, a fixed ring and a first connecting rod; the rotating part comprises a second pedestal, a motor, a second connecting rod, a protective ring, a rotating frame, a fixed seat, a guide seat and two to four guide rods; the motor is arranged at the upper end of the first pedestal and is fixedly connected with the second pedestal, and the lower end face of the second connecting rod is provided with a roller; the roller comprises a positioning wheel, a cylindrical wheel and an wheel axle; one end of the second connecting rod is fixedly connected with the second pedestal, and a loop bar is arranged on the other end of the second connecting rod in a sleeving manner; a protective ring circular arc block is fixedly arranged at the other end of the loop bar; the guide rods are equally spaced from one another on the guide seat, are in threaded connection with the guide seat and all form an included angle of 10-30 degrees with the horizontal line. Loosening and winding during pay-off can be avoided, active pay-off is realized, the bearing capacity of one-time pay-off can be adjusted, the bearing capacity is improved by arranging the roller, and the stand adapts to spools of different sizes and materials.

The invention discloses a simple parallel spreading and laminating device for a wide ultrathin membrane. The simple parallel spreading and laminating device comprises a membrane unreeling roller, a magnetic powder damper, a bent roller, a gluing roller, a flat roller and a rack. A technology comprises the steps that the wrapping angle of the bent roller and the wrapping angle of the flat roller are adjusted by setting proper unreeling tension; the relative position relation of the unreeling roller, the bent roller and the flat roller is adjusted; the protruding direction of the bent roller is adjusted; and the membrane passes through the unreeling roller, the bent roller and the flat roller and then is combined with pre-soaked cloth to complete the laminating procedure. According to the simple parallel spreading and laminating device and technology for the wide ultrathin membrane, non-uniform elastic deformation is generated in the middle area and the edge areas of the membrane through the axial stroke linear change of the bent roller and the elasticity of the membrane, the spread membrane is fixed in the weft direction through the flat roller so that the ultrathin membrane can be spread, and the problems that the ultrathin membrane has wrinkles and is unevenly spread in the unreeling process can be effectively solved; unreeling is stable, the spreading parallelism of the ultrathin membrane is good, the breadth is stable, bonding to glued fibers is good, the phenomenon that bubbles are brought due to wrinkles of the membrane is thoroughly eliminated, and the finished product rate of the pre-soaked cloth is increased.

The invention provides an uncoiler. The uncoiler comprises a frame body, an uncoiling device and a material feeding device. The frame body comprises an under frame and a vertical frame. The vertical frame is arranged on the under frame. The vertical frame and the under frame are arranged in a vertical mode. The material feeding device comprises a material pressing mechanism, a first material feeding mechanism and a second material feeding mechanism. The material pressing mechanism and the first material feeding mechanism are arranged on the two sides of the uncoiling device respectively. The second material feeding mechanism is arranged below the material pressing mechanism. The uncoiler has the advantages and the positive effects that due to the structure, the material feeding of the uncoiler is stable, and the drooping problem during the sheet material feeding procedure is solved.

The invention relates to a biaxial-tensile 9-mum ultra-thin composite polypropylene membrane, which comprises an upper surface layer, a middle layer and a lower surface layer, wherein each layer adopts homo-polypropylene as the base material. The composite membrane is characterized in that cross-linked methyl acrylate with a particle diameter of 2 mum is added into the homo-polypropylene base layer material of the upper and the lower surface layers at a ratio of 3.0 to 5.0% the total weight of the homo-polypropylene base layer material as an anti-adhesion material; and adding C9 hydrogenated petroleum resin into the homo-polypropylene base layer material of the middle layer at a ratio of 5 to 10% the total weight of the homo-polypropylene base layer material as a stiffening agent, adding oleamide with a ratio of 0.1 to 0.3% the total weight of the homo-polypropylene base layer material and adding alkyl(C14 to 18)bis(2-hydrox-yethyl)amine at a ratio of 0.1 to 0.3% the total weight of homo-polypropylene base layer material. The composite membrane has stiffness and no adhesion.

The invention discloses a preparation method of polytrimethylene terephthalate fiber with shape memory characteristics, including: firstly, selected polyester polymer is provided with at least 0.8dL/g of intrinsic viscosity and contains at least 85mol percent of polytrimethylene terephthalate, wherein, at least 85mol percent of the repeating unit is composed of three-methylene; secondly, the polyester polymer is melted and transported through a screw melting extruder, the melting body is metered through a metering pump and is extruded out through a spinneret, and as-spun fibers are drafted successively through a pair of drafting hot rollers after being cooled through lateral blowing; thirdly, the drafted fibers are introduced into a group of grouping roller stereotype boxes with steam; fourthly, tow is introduced into a winding head to be winded into mold. The fiber made through the invention has the advantages of good packaging appearance forming, good structural stability and soft handle. And with lower modulus, the fiber is still provided with good elasticity and tensile recoverability. The textiles made of the fiber which are produced through the process are provided with good shape memory characteristics.

The invention provides waterproof aluminum-foil paper production equipment and a production method thereof. The waterproof aluminum-foil paper production equipment comprises a bottom plate, a windingdevice, an embossing device and a slitting device. The waterproof aluminum-foil paper production equipment and the production method thereof provided by the invention can solve the problems that a, during the volumed aluminum-foil paper embossing anti-fake production process, solid particles exist on the surface of volumed aluminum-foil paper, the aluminum-foil paper is easy to crush so as to be damaged due to direct embossing, and embossing equipment in the general market cannot adjust the appropriate pressure aiming at different aluminum-foil paper thicknesses, so that the application rangeis low; b, the volumed aluminum-foil paper is instable when being unwinded and is easy to shake, so that the production efficiency and the product quality are influenced; and c, when the aluminum-foilpaper is cut, the tension stressed on the aluminum-foil paper is instable, so that the cutting dimension of the aluminum-foil paper cannot be controlled when the aluminum-foil paper is cut, meanwhile, the cut aluminum-foil paper is easy to wrinkle, the product quality is influenced and the like.

The invention discloses a non-adhesive biaxially-oriented polypropylene film for hot lamination. The film comprises a heat-sensitive function layer, a substrate layer and an anti-sticking layer which are orderly arranged and are formed by co-extrusion lamination, wherein calculated as the weight ratio, the heat-sensitive function layer accounts for 4 to 33 percent of the total weight of the film, and the anti-sticking layer accounts for 4 to 17 percent of the total weight of the film; the substrate layer comprises 85 to 95 percent of polypropylene, 1 to 5 percent of antistatic composite masterbatch, and 4 to 10 percent of hydrogenated petroleum resin composite masterbatch; the antistatic composite masterbatch comprises 10 to 30 percent of antistatic agent and 70 to 90 percent of the polypropylene; the hydrogenated petroleum resin composite masterbatch comprises 40 to 60 percent of hydrogenated petroleum resin and 40 to 60 percent of the polypropylene; and the anti-sticking layer comprises 95 to 99 percent of the polypropylene and/or polyethylene, and 1 to 5 percent of anti-adhesion masterbatch, and the anti-adhesion masterbatch comprises 5 to 15 percent of antiblocking agent. The invention also provides a method for preparing the non-adhesive biaxially-oriented polypropylene film, which comprises the steps of: adding materials of the layers into extruding machines for melting plastification and extrusion respectively; merging for co-extrusion through a T type die head; performing biaxial tension; and performing corona treatment, and winding into the non-adhesive biaxially-oriented polypropylene film for hot lamination.

The invention relates to the technical field of silk production and discloses a reeling agent for automatic silk reeling production. The reeling agent comprises the following raw materials of, by weight, 5 to 10 parts of castor oil polyoxyethylene ether, 6 to 9 parts of lauryl sodium sulfate, 6 to 9 parts of polyoxyethylene lauryl ether, 5 to 10 parts of polyoxyethylene fatty alcohol sodium sulfate, 5 to 8 parts of cocamidopropyl betaine, 10 to 15 parts of hydrogen peroxide, and 10 to 15 parts of sodium silicate. The reeling agent is reasonable in formula, capable of effectively increasing the reelability rate of raw silk, improving product quality, fully permeating cocoon shells, performing uniform reeling, and reducing the influence of cocoon quality differences on silk reeling quality, low in production cost, and small in use amount, silk produced through subsequent processes is bright white and soft and smooth in touch, and the use amount of the reeling agent is easy to control.

The invention provides a chain saw for fixing and releasing fixtion of a guide plate through a simple operation. An operation handle (15) of the chain saw is used for fixing and releasing fixtion of a guide plate (3), which is provided with a lock knob (21) being in and out relative to the operation handle, under a normal state, the lock knob is loaded a force by a helical spring (26) in the protrudent direction of the operation handle, which is arranged at following position, at the position, the lock knob is pushed when gripping the operation handle, meanwhile, an accepting part (17) of theoperation handle is provided a plurality of protuberances (31, 31...), the protuberances allow the lock knob to slide when the operation handle is rotated to the fixing side of the guide plate (3), and limit the lock knob to slide when the operation handle is rotated to the fixtion releasing side of the guide plate, need to push the lock knob only when rotating the operation handle while releasing fixtion of the guide plate.

The invention discloses a linen strip damping unwinding mechanism and belongs to the field of textile processing mechanical equipment. An unwinding mechanism body of the linen strip damping unwindingmechanism is vertically arranged on one side of the upper portion of a fixed bracket. A strip pulling mechanism is arranged on the position, on the lower side of a strip conveying mechanism, of the fixed bracket. A roll-bearing rotary roller is horizontally and fixedly arranged in the middle of one side of a rotating disc. The two sides of the lower portion of a damping bracket are symmetrically and rotationally connected with damping rotary wheels correspondingly. A feeding press roller is horizontally arranged on one side of the upper portion of a strip conveying bracket. A strip guiding channel is horizontally formed in a strip guiding sleeve. The two ends of a strip-guiding press roller are rotationally connected to strip-pressing guiding plates on the two sides of the strip conveyingbracket correspondingly. A material-pulling rotary roller is horizontally and rotationally connected to a lifting bracket. A strip-bearing rotary roller is horizontally and rotationally connected to the position, on the lower side of the material-pulling rotary roller, of the fixed bracket. The linen strip damping unwinding mechanism is reasonable in structural design, linen strips can be stably and accurately unwound and conveyed efficiently, conveniently and rapidly, the unwinding and conveying efficiency and quality of the linen strips are improved, and the needs of production and use are met.

The invention discloses a bobbin package winding device special for use in yarn dyeing, and is suitable for filament yarn package winding for use in dyeing. A special yarn package winding device is designed by improving a progressive precision winding way, so that the special bobbin dyeing requirements of certain special yarns, such as fine denier cellulose filament yarns can be met. The winding device consists of a winding bobbin, an unwinding bobbin, a winding guide roller, a reciprocating shaping rod, yarn guides, a shaping guide roller, two driving motors and a transverse variable-speed shaping rod control system. Transverse speed change of the shaping rod is completed by regularly controlling the rotating speed of the shaping guide roller via a preset program; the control system is simple in structure; a plurality of yarn guides can be arranged on the shaping rod, so that multi-spindle synchronous control of the entire device can be realized by using one shaping guide roller, and the manufacturing cost of the entire device is reduced effectively.

The invention discloses an unwinding device for a warp knitting machine. The unwinding device for the warp knitting machine comprises a fixed frame, a cross beam and an unwinding device, wherein the unwinding device is arranged on the cross beam; the frictionally unwinding device comprises a driving unwinding roll, a driven unwinding roll, a driving synchronous belt wheel and a driven synchronous belt wheel; the driving synchronous belt wheel is used for controlling the rotation of the driving unwinding roll; the driven synchronous belt wheel is used for controlling the rotation of the driven unwinding roll; the driving synchronous belt wheel and the driven synchronous belt wheel are connected with a motor driving device; and the driving unwinding roll and the driven unwinding roll are arranged on an unwinding roll fixing plate. The unwinding device for the warp knitting machine has the advantages of guaranteeing the constant-speed unwinding of a cloth roll during unwinding, adjusting the position of cloth conveniently, pressing the unwound cloth flatly and improving the knitting quality of the warp knitting machine.

The invention provides laminating and stacking equipment for metal plates, and belongs to the technical field of metal plate processing. The laminating and stacking equipment comprises a film laminating device and a stacking device, the film laminating device comprises a film laminating guide mechanism, a film laminating mechanism and a film cutting mechanism; the film laminating guide mechanism comprises a laminating feeding guide roller and a laminating discharging guide roller; the laminating mechanism is arranged between the laminating feeding guide roller and the laminating discharging guide roller; the film cutting mechanism is arranged on one side of the film laminating mechanism; the stacking device comprises a stacking supporting mechanism, a stacking carrying mechanism and a stacking limiting alignment mechanism, a tray of the stacking supporting mechanism is placed on the stacking supporting table, the stacking carrying mechanism comprises a left stacking carrying assembly and a right stacking carrying assembly, and the left stacking carrying assembly and the right stacking carrying assembly are symmetrically arranged on the two sides of the stacking supporting mechanism. The metal plates can be automatically stacked after being laminated, metal plates are stacked in order, the labor intensity of workers is greatly reduced, and personal injuries to the workers are effectively avoided.

The invention provides a plate uncoiler and matched equipment. The plate uncoiler comprises a frame body, an uncoiling device and a feeding device. The frame body comprises a base frame and a vertical frame, the vertical frame is located on the base frame, and the vertical frame and the base frame are perpendicularly arranged. The feeding device comprises a material pressing mechanism, a first feeding mechanism and a second feeding mechanism. The material pressing mechanism and the first feeding mechanism are located on the two sides of the uncoiling device respectively, and the second feeding mechanism is located below the material pressing mechanism. A coiling device comprises a sliding mechanism and a supporting mechanism, and a motor supplies power to the sliding mechanism. The plate uncoiler and the matched equipment have the advantages that the uncoiler of the structure is stable in feeding, the drooping problem of plates in the feeding process is solved, and the coiling device which is matched with the plate uncoiler for use is high in degree of automation and convenient to use.

The invention discloses a spandex with improved backing-off property and creep property for a paper diaper and a production method thereof. Thermoplastic polyurethane which accounts for 3-35% of the spandex by weight percent and cellulose acetate butyrate or cellulose acetate propionate which accounts for 0.5-2.0% of the spandex by weight percent or a mixture of the two, as well as an internal lubricant and external lubricant composition which accounts for 0.3-5.0% of the spandex by weight percent, are added into a polyurethane-urea stock solution, and drying spinning is performed to prepare a polyurethane elastic fiber, wherein an internal lubricant is one or more of n-butyl stearate, oleamide, ethylene bis stearamide and amino silicon oil; and an external lubricant is one or more of talcum powder, carbon monofluoride and magnesium stearate. The prepared spandex has favorable backing-off property and creep property, can be effectively applied to the field of elastic materials of paper diapers, and meanwhile, is suitable for two modes of rotary backing off and axial backing-off.

The invention provides an automatic cable storage reel. The automatic cable storage reel comprises a pay-off rack, a cable body twined on the pay-off rack and a take-up rack connected with the pay-offrack through the cable body. Through the automatic cable storage reel, the defects in the prior art are overcome. The automatic cable storage reel is reasonable in design and compact in structure, clamps the cable body through rotary jaws of a fixing device to prevent the cable body from getting loose and being twined loosely. Besides, the storage reel is moved slowly when the cable body is twined, so that the cable body is uniformly twined onto a take-up rotary shaft. Accordingly, the automatic cable storage reel is better in twining effect and convenient to sell and use and has high practicality.

The invention relates to the technical field of printing cloth roll unwinding, in particular to a centrifugal printing cloth unwinding mechanism. A top rod is inserted in a supporting cylinder, the lower end of the top rod is connected with the bottom end of an inner chamber of the supporting cylinder through an abutting spring, the upper end of the top rod is provided with a metering roller, andthe metering roller abuts against a printing cloth roll on the upper side. When stopping is performed, a traction disappears, resistance is provided under the action of a pressing plate, a roller stops, a telescopic rod is taken back under the action of a returning spring, and a top plate moves downwards; under the action of the gravity of the top plate and a brake rod, a friction plate presses abrake wheel to perform braking, so that the rotation of the printing cloth roll caused by inertia is prevented, a tightened state of a printing cloth is ensured, the unwinding quality is improved, sothat the pressing plate provides resistance to ensure unwinding stability; when stopping is performed, the pressing plate performs braking, at the same time a braking force is provided for a right rotating shaft, so that the printing cloth between the roller and the printing cloth roll keeps a tightened state and does not loosen, and an effect is better by the combination of the two.

The invention relates to the field of wall cloth production and provides a wall cloth transfer-printing and embossing processing system. The wall cloth transfer-printing and embossing processing system aims at achieving the effects that the automation degree is high, and product quality is good. According to the technical scheme, the wall cloth transfer-printing and embossing processing system comprises a gauze unrolling device, a thin film unrolling device, a transfer-printing film unrolling device, a transfer-printing device, a transfer-printing film withdrawing device, an adhesive application device, an attachment device, a heating and embossing device, a drying device, an edge cutting device and a rolling device, wherein the gauze unrolling device, the thin film unrolling device, the transfer-printing film unrolling device, the transfer-printing device, the transfer-printing film withdrawing device, the adhesive application device, the attachment device, the heating and embossing device, the drying device, the edge cutting device and the rolling device are sequentially arranged in a linear manner. According to the wall cloth transfer-printing and embossing processing system, the transfer-printing film printing technology is adopted; processed wall cloth product patterns are formed integrally; the process is simple; no color difference is generated; and efficiency is high. Compared with the traditional mode that multiple printing machines are adopted for conducting pattern printing, on one hand, equipment cost is lowered, and energy is saved; and on the other hand, the production cycle is shortened, and wall cloth production efficiency is improved.

The invention relates to a novel cloth embossing machine. The machine comprises a rack, and an unwinding roller, a pre-processing device, an embossing box, an after-processing device and a rewinding mechanism are installed on the rack. The novel cloth embossing machine has the advantages that through pre-processing of dust removal, static removal and tension adjustment, heating of an ultrasonic generator and a traction effect of the rewinding mechanism, it is kept that cloth is stably unwound in the embossing process and the texture is clear; a PLC senses a signal of the thickness, detected through a sensor, of cloth on a conveying belt, on the basis of detection data of the PLC, the height of a supporting rail is adjusted through a height adjustment device, and it is guaranteed that the supporting rail can meet the use requirements of cloth different in thickness; the PLC senses the signal of the contact sensor so that an embossing detection block can clearly detect embossing of the cloth in the lifting process of a lifting air cylinder, it is guaranteed that the embossing can be clearly seen on a touch control display screen, and accordingly the high-quality detection effect is achieved.

The invention discloses spinning oil for a fine-denier melt-spun spandex fiber. The oil comprises the following components by weight percentage: 30-60% of dimethyl silicon oil, 30-50% of modified silicone oil, 0-10% of nonionic surfactant and the balance of other additive, wherein the modified silicone oil is amino modified silicone oil or polyether modified silicone oil; polysiloxane chain segments m and n in the amino modified silicone oil are equal to 30-120; an adduct number b of polyoxyethylene chain segments in the polyether modified silicone oil is equal to 0-10; an adduct number a of polyoxypropylene chain segments is equal to 0-10; the nonionic surfactant is fatty alcohol polyoxyethylene ether, fatty alcohol polypropylene oxide ether or fatty alcohol polyoxyethylene polyoxypropylene ether; and other additive is phosphate potassium salt of alkyl alcohol polyoxyethylene ether.

The invention relates to an intelligent suspension conveying system and method based on vision measurement, and belongs to the technical field of automatic logistics. The intelligent suspension conveying system comprises a mounting shaft, double rails, a conveying mechanism, a power device and a lifting mechanism, wherein the mounting shaft is used for fixing a suspension conveying device and a power device fixedly mounted on a base; the double rails are fixedly suspended through the mounting shaft; the conveying mechanism is connected to the double rails in a sliding manner; a chain is arranged on the conveying mechanism and is used for connecting the power device and the conveying mechanism; the top end of the power device is fixed through the mounting shaft and is arranged on the base; the lifting mechanism is fixedly mounted on the conveying mechanism; and the lifting mechanism is composed of a reversing mechanism and a winding mechanism, the reversing mechanism is matched with a plurality of sets of reversing rails installed on the double rails, and the winding mechanism is used for winding or unwinding a rope according to the actual working condition. The intelligent suspension conveying system can be installed at the high position of a workshop, the conveying height can be adjusted, curve rail conveying can be achieved, and meanwhile shaking generated when materials are conveyed at the high position is avoided.