535results about How to "Stretch smoothly" patented technology

Wearable electronic devices that provide robustness against variations in user form are described. The wearable electronic devices include a set of pod structures arranged in an annular configuration having a variable circumference, with adaptive physical coupling between adjacent pairs of pod structures. Adaptive physical coupling advantageously accommodates different user sizes, forms, and movements and enhances the overall ergonomics of the wearable electronic devices. Adaptive physical coupling also maintains substantially constant and / or equal angular spacing between components of the wearable electronic devices regardless of the form of the user.

The invention discloses a manufacturing method of a high-strength, high-modulus and low-shrinkage polyester industrial yarn. The manufacturing method comprises the processes of preparation of a highly viscous melt polyester raw material, metering, spinning, cooling, oil applying, drawing, heat shaping and winding formation; the cooling comprises slow cooling, precooling, cooling in an air free zone and air blast cooling in sequence; the precooling part uses a driven hollow-out successive annular strip. Through the introduction of a precooling device, irregularity caused by tow shaking due to move-down of a curing point of a fiber is reduced, the linear density deviation is controlled within a lower range, and orientation and crystallization of an as-spun fiber are reduced, so that the high-strength, high-modulus and low-shrinkage polyester industrial yarn is obtained; and the high-strength, high-modulus and low-shrinkage polyester industrial yarn has the advantages of high breaking tenacity, high initial modulus, low linear density deviation, low breaking elongation and lower dry-heat shrinkage rate and can be used for preferably satisfying requirements on application.

There is provided a porous membrane of vinylidene fluoride resin which has pores of appropriate size and distribution and also excellent mechanical strength represented by tensile strength and elongation at break and is useful as a microfiltration membrane or a separator for batteries. The porous membrane of vinylidene fluoride resin is characterized by the presence in mixture of a crystalline oriented portion and a crystalline non-oriented portion as confirmed by X-ray diffraction, and is produced by subjecting a melt-extruded composition obtained by mixing a vinylidene fluoride resin having a molecular weight distribution which is appropriately broad and high as a whole with a plasticizer and a good solvent for vinylidene fluoride resin, to cooling for solidification from one surface, extraction of the plasticizer and stretching.

The invention relates to a novel preparation technology of polyoxymethylene fiber, in particular to the novel preparation technology of the polyoxymethylene fiber via multi-stage slow cooling and three-stage drawing with different media, which comprises the following steps: vacuum-drying polyoxymethylene granular materials, heating and melting via a screw extruder, melting and extruding by a spinneret, leading small melt flow to pass through the multi-stage slow cooling, carrying out high-speed traction, passing through a moistening and oiling cluster, winding, then obtaining as-spun fiber, carrying out hot air drawing and two times of drawing with different types of solvent, then carrying out hot molding and finally preparing the polyoxymethylene fiber. The novel prepration technology can solve the problems of matching between the multiple sections of atmosphere and temperature and the spinning process control and the control of the drawing with multiple media and make up for the deficiencies that the single atmosphere and temperature and the single medium drawing of the prior art lead the structure to be difficult to stable and uniform.

The invention relates to a manufacturing method for superlow shrinkage type PET industrial yarn, which is characterized in that the superlow shrinkage type PET industrial yarn is manufactured through selecting and controlling cooling conditions, and the technological process is as follows: hyperviscous melting to polyester raw materials, metering, spanning, cooling, oil supplying, stretching, hot shaping, and reeled forming. For lowing the irregularity and shrinkage percentage of fiber, a slow cooling device is arranged in the production of industrial yarn, a precooling device adopted is a hollow stepped ring-shaped belt comprising an upper part and a lower part, through holes with the diameters of 5 to 7 mm are uniformly distributed in the upper part of the ring-shaped belt, through holes with the diameters of 3 to 4 mm are uniformly distributed in the lower part, and the hole arrangement densities are the same. The natural target of the PET industrial yarn is as follows: the fracture strength is equal or greater than 7.0 cN / dtex, the breaking elongation is 20.0 plus or minus 1.5 percent, and the dry heat shrinkage percentage under the test conditions of 170 DEGC, 0.05cN / dtex reaches 1.9 plus or minus 0.25 percent.

A securement device for an intravenous, winged needle set, which comprises: an inverted U-shaped, self-supporting strap, the strap having vertical legs attached to a central portion of a base. The base has a bottom to rest on the skin of the patient. A portion of the base forward of the strap has an upper surface that slopes downwardly to a forward end at an angle to the skin and the bottom of the base. Improved retention and ease of application is provided with such a device.

The phase background of a proton resonance frequency shift treatment image may be estimated by fitting a combination of baseline images to the treatment image.

A method of making an elastic laminate has the steps of first stretching a longitudinally elongated elastic film transversely and then relaxing the transversely stretched film. The relaxed and transversely stretched film is then cut into a pair of adjacent longitudinally extending strips that are bonded adjacent each other between two unstretched and longitudinally extending nonwoven webs to form a laminate. This laminate is then transversely stretched at least at the strips and then relaxed and wound up into a roll. Closure elements that have an elastic center region and less elastic end sections at both ends can be punched from the laminate thus made.

There is provided a porous membrane of vinylidene fluoride resin which has pores of appropriate size and distribution and also excellent mechanical strength represented by tensile strength and elongation at break and is useful as a microfiltration membrane or a separator for batteries. The porous membrane of vinylidene fluoride resin is characterized by the presence in mixture of a crystalline oriented portion and a crystalline non-oriented portion as confirmed by X-ray diffraction, and is produced by subjecting a melt-extruded composition obtained by mixing a vinylidene fluoride resin having a molecular weight distribution which is appropriately broad and high as a whole with a plasticizer and a good solvent for vinylidene fluoride resin, to cooling for solidification from one surface, extraction of the plasticizer and stretching.

The invention discloses PET (polyester) high-speed spinning finish oil, which comprises the following components in parts by weight: 66-74 parts of smoothing agent, 10-14 parts of emulsifier, 4-8 parts of antistatic agent, 6-10 parts of tow collecting agent and 3-5 parts of additive, wherein the smoothing agent comprises phosphate, polyacrylic ester, and any one or a mixture of plant oil, animal oil, mineral oil and synthetic ester oil, the emulsifier comprises an alkyl ether type surfactant, castor oil polyoxyethylene ether and polyoxyethylene ether laurate, the antistatic agent comprises the cationic surfactant of an ammonium salt and octadecanol phosphate potassium salt, the tow collecting agent comprises polyethylene glycol laurate diester, propylene glycol and rubber pyrolysis oil, and the additive comprises talcum powder, fatty alcohol, fatty acid and acrylic acid. By means of the design disclosed by the invention, the frictional factor is more stable and the oil film strength and the oil flash point are both higher.

A slender synthetic resin heat-resistant bottle type container having a circumferential draw ratio of 2.8 or less, for example, comprises at least one pressure reduction absorbing panel (5) provided at a container body part, wherein the pressure reduction absorbing panel is provided with at least one convex portion (6) having a width larger at a lower side than at an upper side as viewed in a circumferential direction of the container. Alternatively, each pressure reduction absorbing panel has a border line bulged toward a container bottom part. This causes a resin to be smoothly stretched even at mold surface portions corresponding to concave and convex portions of a container body part surface upon blow molding. These avoid a defective appearance of the container and do not adversely affect heat resistance thereof.

The invention provides a sliding york which can process stretching movement swimmingly and reduce cost even if a carry object has heavy weight or stretching stroke. The sliding york apparatus (1) includes a fixing york (11), a middle york (21) supported to slide along length direction relative to the fixing york (11), and a front york (31) supported to slide along length direction relative to the middle york (21). A drive pinion driven by a rotary drive device (2) mounted on the fixing york (11) engages with a rack (22) mounted on the middle york (21) in the sliding york apparatus (1). All movable yorks (the middle york (21) and the front york (31)) are driven directly by the rotary drive device (2).

A preform for manufacturing plastics material bottles or wide-necked vessels is described, having a rigid, substantially elongate, frustoconical body portion that is closed at one of its longitudinal ends by a dome-shaped end portion and at its opposite longitudinal end adjoins via a preform collar a neck portion provided with a pouring opening. The preform possesses in the body portion an external diameter that is reduced from the preform collar to the end portion. The body portion has a wall thickness which changes over its longitudinal extension substantially constantly by up to +2 mm. For this purpose, it possesses an internal diameter which decreases substantially constantly from a transition to the preform collar up to a transition to the dome-shaped end portion.

A method of encoding a video signal of a 2D image with conversion data to assign in the conversion of said video signal to left and right eye images for stereoscopic display, including adding conversion data to a video signal of the 2D image to provide an encoded signal, the conversion data defining displacement of respective selected points of the 2D image for converting the 2D image to a format suitable for stereoscopic display, wherein the conversion data enables the creation of the left and right eye images.

The invention relates to a polyfluortetraethylene nanofibre membrane and a preparation method thereof. The aperture distribution of the polyfluortetraethylene nanofibre membrane is concentrated within a range of + / -100 nanometers and occupies more than 90 percent of the total volume of each level aperture; the stretching process of the preparation method adopts low-temperature segmenting stretching, thus the stretching temperature is stable, the polyfluortetraethylene nanofibre membrane is uniformly heated, and giant molecule segmers are equally unfolded; the produced polyfluortetraethylene nanofibre membrane has concentrated aperture distribution and high uniformity so as to generate high water pressure resistance, long water resistant time and high membrane fibering degree, and the obstructing efficiency of bacteria reaches more than 99.99 percent, thereby the polyfluortetraethylene nanofibre membrane can meet the requirement of oil-water separation and high-end gas filtration of an operation isolation mattress with high-pressure steam filtration and high water pressure resistance and can be used in fields of superclean room entering air filtration, and the like, such as medical treatment and health protection, health matter cultivation, semiconductor devices, integrated circuit, medicine, and the like.

The invention discloses a self-loading and unloading heavy-load shelf with an adjustable layer interval, and belongs to the field of shelves. The self-loading and unloading heavy-load shelf comprises a main framework, a layered frame, a manual winch, steel wire ropes, a pulley block, a heavy object and a lifting hook, wherein the layered frame comprises rolling lifting sliding sleeves, heavy-load slide rails and a tray; the heavy-load slide rails are arranged on both sides of the tray, and are arranged on vertical columns of the main framework through the rolling lifting sliding sleeves arranged at the two ends of the heavy-load slide rails; the manual winch is fixed on one side of the main framework, and four steel wire ropes are led out of the manual winch; after the steel wire ropes pass through the pulley block on the top of the main framework, two of the steel wire ropes are combined together and are connected with the hoisting hook, and the other two steel wire ropes are connected with the heavy object; hoisting rings are arranged on the four corners of the tray respectively and are correspondingly connected with the four steel wire ropes, and the tray is lifted or lowered through the manual winch. By adopting the self-loading and unloading heavy-load shelf, the height of a laminate can be adjusted under the condition that the laminate is under load; moreover, loading and unloading of heavy goods can be realized, and the self-loading and unloading heavy-load shelf is particularly suitable for storing heavy goods.

A hand-held measuring device including a case and flexible steel spring-biased measuring tape wound about an annular reel fitted within a circular housing within the case, a single battery-powered motor having an output shaft, a driving wheel fixedly mounted on the output shaft of the motor for directly engaging the surface of the tape and thereby pushing the tape out of the case, a first switch mounted on the case for controlling the motor, a pull rod connected to the drive wheel, and a second switch mounted on the case and connected to the pull rod for disengaging the driving wheel from the tape surface.

The invention discloses a manufacturing method for high-modulus low-shrinkage PET industrial yarn, and the technological process of the method is as follows: hyperviscous melting to polyester fiber raw materials, metering, spinning, cooling, oil applying, stretching, hot shaping and reeled forming, wherein the cooling process sequentially comprises four parts including slow-cooling, pre-cooling, calm zone cooling and blow cooling, and the pre-cooling part adopts a passive hollow ring-shaped belt device. Through the introduction of the pre-cooling device, the irregularity caused by tows quivering produced under the down moving of a solidification point of fiber can be reduced, the deviation ratio of linear density can be controlled within a lower range, the purpose of reducing orientation and crystallization of embryo fiber is achieved, finally high-modulus low-shrinkage PET industrial yarn can be obtained, the high-modulus low-shrinkage PET industrial yarn has the advantages of high modulus, low dry heat shrinkage percentage, low breaking elongation and low linear density deviation ratio, and practical application can be well met.

The invention provides hook-face displayer back plate forming equipment. The hook-face displayer back plate forming equipment comprises an upper die and a lower die. The upper die comprises a plurality of segmented punching heads and a material pressing plate, wherein the working surfaces of the segmented punching heads are hook faces, and the material pressing plate is arranged on the outer sides of the segmented punching heads. The working surface of the lower die is a hook face matched with the working surfaces of the segmented punching heads. The edge of the lower die and the material pressing plate are matched to fix a back plate raw material. The working surfaces of all the segmented punching heads are sequentially attached to the working surface of the lower die to punch the back plate raw material, so that the back plate raw material is subjected to plastic deformation. The invention further provides a hook-face displayer back plate forming method. A workpiece is punched through the segmented punching heads in sequence, workpiece feeding is easy to control, the workpiece is uniformly stretched, an obtained hook-face back plate is thin and has certain strength, and the precise hook face can be maintained.

A seat structure includes a seat plate, a backrest plate adjustable in inclination angle, and a bridging member covering up a flexion portion between the seat plate and the backrest plate for bridging the seat plate and the backrest plate smoothly. The bridging member is a member shaped like a thin flat plate having a flexural elasticity and stably supports a baby's buttocks while dispersing a body pressure with its entire surface. This structure can provide such a seat structure that can prevent local loads from acting on the buttocks both in the form of a bed and in the form of a chair.

In a circuit board, when lands provided on a rear surface of a substrate are each separated into a mainland and a sub-land, warping or other defects of the substrate can be ignored when soldering, and the substrate can be mounted with a high bonding strength. On the rear surface of a module substrate, partitions are each provided to separate a metal film into the mainland and the sub-land. Accordingly, when the substrate is mounted on a motherboard, solder applied beforehand from each end-surface electrode to the mainland can be largely protruded downward from the mainland, and warping or other defects of the substrate can be ignored by this protruding portion of the solder. In addition, in the state in which the substrate is mounted, since the solder is pushed out from between the mainland and the motherboard and overflows the partition, both the mainland and the sub-land can be soldered to the motherboard side, and hence stable bonding can be obtained at a large bonding area.

The invention provides a polytetrafluoroethylene film longitudinal stretching unit which can be used for producing polytetrafluoroethylene films even in thickness and high in air permeability and is less in waste and low in energy consumption. The polytetrafluoroethylene film longitudinal stretching unit comprises an unrolling machine, a multi-roll desizer, a multipoint stretching furnace and a rolling machine, wherein the unreeling machine comprises an unreeling roller, an unrolling motor, an unrolling transducer used for controlling the unrolling roller and an unrolling tension motoring device; the output of the unrolling tension motoring device is connected with a PLC (Programmable Logic Controller); the output of the PLC is connected with the unrolling transducer; the rolling machine comprises a rolling roller, a rolling motor, a rolling transducer and a rolling tension motoring device; the output of the rolling tension motoring device is connected with the PLC; and the output of the PLC is connected with the rolling transducer.

The invention discloses a construction method of bridge seamless type expansion joint. The construction method of the bridge seamless type expansion joint includes the steps of embedding a sealing strip in the seam portion of the expansion joint, pouring melted 502 elastic-plastic bodies, placing a cross-seam aluminum sheet well, paving various high molecular polymers which fit in with the American society for testing material (ASTM) standard layer by layer, wherein the various high molecular polymers are mixed materials of the 502 elastic-plastic bodies and granite of a corresponding grade, finally using granitic plaster as a surface wearing layer, and the bridge seamless type expansion joint is achieved. The construction method of the bridge seamless type expansion joint has the advantages of satisfying stretch and displacement of an upper portion structure of the bridge, guaranteeing that cars run stably, improving riding comfort, and being strong in elastic restoring force, capable of resisting the high and low temperature, good in plasticity, extensibility, durability, waterproof performance and adhesion performance, long in service life, convenient to install, flexible in installation, rapid in traffic openness and the like. In addition, the construction method of the bridge seamless type expansion joint further has the advantage that the extensible displacement is from 20mm to 50 mm.

To provide a hydraulic driving device configured to smoothly extend a hydraulic cylinder. The present invention includes the open circuit E, the closed circuit A, a control device 57, and a control lever 56a. The open circuit E is provided with a flow passage 202 for connecting an outlet port of the open circuit pump 13 and a head chamber 1a of the boom cylinder 1, a selector valve 44a provided in the flow passage 202, a discharge flow passage 404 for connecting a hydraulic fluid tank 25 and a flow passage 200, and a bleed-off valve 64 provided in the discharge flow passage 404. The control device 57 is configured in such a manner that when a manipulate signal for extending the boom cylinder 1 is input from the control lever 56a, the bleed-off valve 64 is closed, the selector valve 44a is subsequently opened, and the open circuit pump 13 is controlled.

The invention belongs to the technical field of livestock breeding, and discloses a method for a breeding fragrant pig. The method includes the following steps that (1) a pig house is constructed; (2)feeding is carried out through an automatic feeding device, wherein feed is added into a supplying box, and before the fragrant pig feeds, the fragrant pig treads on a pedal, feed in the supplying box automatically enters a feed trough, and after feeding of the fragrant pig is completed, the fragrant pig leaves the pedal, and the supplying box stops to supply the feed to the feed trough; (3) residual feed in the feed trough is cleaned. By means of the method for breeding the fragrant pig, automatic feeding of the fragrant pig can be achieved, the feed is not required to be artificially added,and the labor cost is saved.

Disclosed is a single driving multi-stage synchronous stretch-retract repeatable solar panel unfolding mechanism. The solar panel unfolding mechanism comprises a machine frame, a motor, a speed reducer, a speed accelerator, large and small steel wire rope wheel set components, steel wire ropes and two-stage solar panels, wherein the machine frame is fixed on the ground, the motor, the speed reducer, a coupling and the speed accelerator are in series connection, the speed reducer and the speed accelerator are fixed on the machine frame, the small steel wire rope wheel set component is fixed on one end of one side of a first stage solar panel, and the other end of the same side of the first stage solar panel is connected with the machine frame through a first hinge; two ends of the other side of the first solar panel are connected with the second solar panel through a second hinge and a third hinge respectively; the large steel wire rope wheel set component is arranged between the two-stage solar panels and the steel wire ropes are connected with the large steel wire wheel set component and the small steel wire rope wheel set component. The single driving multi-stage synchronous stretch-retract repeatable solar panel unfolding mechanism has the advantages of being simple in structure, low in cost, strong in reliability, low in failure rate and long in service life; meanwhile, the mechanism is capable of effectively unloading a radial tensile force exerted on a driving shaft during a driving process, can prevent the driving shaft from bending or deforming, thus increasing transmission precision.

An improved curtain rolling buffer apparatus mainly includes a rolling means mounted to a left end of the track to allow the curtain hanging below the track to be extended by pulling once and retracted by pulling another time. A buffer means is located on the right end of the track and has a bushing housing a spring. When to extend or retract the curtain, the spring is turned clockwise and extended outwards, and runs idle outside an axle, and the elastic force of the spring is small than the pressure of lube oil so that the curtain is easier to be extended. On the contrary, when the spring is turned counterclockwise, it is tightened and drives the bushing to rotate together.