19results about How to "Reduce slack" patented technology

The utility model discloses a stable and durable packaging bag conveying device capable of avoiding adjustment, the packaging bag conveying device comprises a belt conveyor and a branch baffle, the belt conveyor comprises at least two transmission rollers, a transmission roller mounting rack and a plurality of conveying belts, a plurality of belt grooves are formed in the transmission rollers, and the branch baffle is arranged on the branch baffle. The number of the belt grooves in each transmission roller is larger than that of the conveying belts, each conveying belt comprises a protruding part, a belt body and an embedded part, the protruding parts are arranged on the outer surface of the belt body and extend in the length direction of the belt body, and the embedded parts are arranged on the inner surface of the belt body and extend in the length direction of the belt body. The conveying belt bypasses the transmission rollers, and the embedded part of the conveying belt is embedded into the belt groove. According to the utility model, the abdicating adjustment of a single conveyor belt can be realized, and the conveying stability of packaging bags can be further improved.

The utility model discloses portable conveying belt equipment capable of being folded and stored, and belongs to the technical field of conveying belts. The portable conveying belt equipment comprises a first frame, a second frame arranged on one side of the first frame and hinged to the first frame, a driving roller and a driven roller, wherein the driving roller and the driven roller are rotationally connected to the ends, away from each other, of the first frame and the second frame correspondingly. The conveyor belt is arranged on the driving roller and the driven roller; and the motor is fixedly arranged on the first frame and is used for driving the driving roller to rotate. According to the portable conveying belt equipment capable of being folded and stored, through the combined design of the lifting assembly and the tension roller, when the conveying belt equipment is folded, the lifting assembly drives the tension roller to ascend to relieve pressing on a conveying belt, tension is reduced so that the conveying belt can be folded, stored and carried conveniently, and when the conveying belt is unfolded, the tension roller presses and tensions the conveying belt; and meanwhile, the problem that the conveying belt is loosened due to long-time repeated folding is solved, and the durability of equipment is improved.

The invention relates to the technical field of sports equipment, and discloses a body test rope skipping counting device which comprises a rope skipping line body, the outer surface of the rope skipping line body is rotatably connected with a shell, and the interior of the shell is fixedly connected with a telescopic counting mechanism. An auxiliary stretching mechanism is rotatably connected to the outer surface of the skipping rope body, a storage rotating mechanism is rotatably connected to the interior of the shell, the telescopic counting mechanism comprises a counting displayer, the counting displayer is fixedly connected with the shell, and a circuit board and a first bearing are fixedly connected to the inner wall of the shell; a first box body is fixedly connected to the interior of the first bearing, the clamping force is proper during normal rope skipping, the skipping rope is prevented from loosening and affecting the playing of a rope skipping person, and the skipping rope is prevented from being damaged due to excessive clamping; when people stumbles the skipping rope, the skipping rope can be quickly loosened to reduce the injury risk of a rope skipping person and the breakage possibility of the skipping rope; and the Hall element can accurately record the rope skipping number.

The utility model relates to braider frame technical field, concretely discloses a high -efficient rope cable braider frame, including the chassis, install a plurality of rotary discs on the chassis, install the base on the rotary disc, install the frame body on the base, still include: the mount pad, fixed in the top of frame body, its both ends are connected with base and mount pad respectively, the mount pad is equipped with the second wire hole for the strand rope to pass through, the second wire hole is equipped with the adjusting seat that can move along the hole wall, and the adjusting seat is used for clamping the strand rope that passes through, the utility model discloses the tension of strand rope will drive the second guide pulley and the moving block along the through -hole movement, and the connecting rope transmission displacement makes the adjusting seat reduce the clamping force, reduce the resistance that strand rope bears, avoid the strand rope and stretch excessively even break because of excessive stress, reduce the situation of production interruption, also reduced material waste.

The utility model discloses a knitting machine feeding mechanism which comprises a base, a fixing plate is fixedly installed on the left side of the upper end of the base, a fixing rod is fixedly installed on the upper side of the right end of the fixing plate, a fixing cylinder is fixedly installed at the right end of the fixing rod, and yarn is movably connected to the outer surface of the fixing cylinder. Four supporting legs are fixedly installed at the upper end of the base, a supporting frame is fixedly installed at the upper ends of the four supporting legs jointly, an adjusting assembly is arranged on the left side of the upper end of the supporting frame, a feeding roller is fixedly installed at the right end of a driving assembly, and the yarn is movably connected to the feeding roller. Compared with the prior art, the yarn feeding device has the advantages that the guide pressing wheels can ensure that yarns are conveyed to the feeding roller from the fixed roller according to a preset path, and the yarns are prevented from deviating from a track in the conveying process.

The invention discloses a straw-feeding mechanism assembly of a vertical corn harvester header, which includes at least two straw-feeding mechanisms, both of which are composed of straw-feeding components A and B, wherein the straw-feeding component A contains a straw-feeding chain C, and the straw-feeding component B contains a broken-line chain clamp frame and a straw-feeding chain D, characterized in that the straw-feeding chain D is composed of a front straw-feeding chain and a rear straw-feeding chain respectively arranged on a frame body in front of and behind the bending point of the chain clamp frame, wherein the rear straw-feeding chain is connected to the power sprocket in transmission, and is connected to the front straw-feeding chain and the straw-feeding chain C of another adjacent straw-feeding mechanism through a double-linked variable-speed sprocket with the same gear ratio to achieve a speed reduction transmission connection. After the invention is implemented, compared with the prior art, it has the advantages of good operation quality, high efficiency, and low product manufacturing and use maintenance costs.

Embodiments of a radially collapsible and expandable prosthetic heart valve (10) are disclosed. A valve frame (12) can have a tapered profile when mounted on a delivery shaft, with an inflow end portion having a smaller diameter than an outflow end portion. The valve can comprise generally V-shaped leaflets (40), reducing material within the inflow end of the frame. An outer skirt (18) can be secured to the outside of the inflow end portion of the frame, the outer skirt having longitudinal slack when the valve is expanded and lying flat against the frame when the valve is collapsed. A diagonally woven inner skirt (16) can elongate axially with the frame. Side tabs (116) of adjacent leaflets can extend through and be secured to window frame portions (30) of the frame to form commissures. The window frame portions can be depressed radially inward relative to surrounding frame portions when the valve is crimped onto a delivery shaft.

The utility model relates to a wire stripping machine wire inlet mechanism belongs to wire stripping machine technical field, including the fixed connection in wire stripping machine body outside mounting panel and the fixed connection in mounting panel one side support, the inside of support is provided with the feed mechanism for conveying cable that extends to its outside, the outside of mounting panel is provided with dust removal mechanism for carrying out the cleaning to dust. This wire stripping machine wire inlet mechanism, through the controller starts drive motor work and drives the conveyer wheel rotation, the conveyer wheel is driven by friction force and advances cable, simultaneously through synchronous belt transmission cooperation between transmission wheel and fan axle center on the driven wheel, makes fan and conveyer wheel synchronous rotation and produces suction, and the suction nozzle produces negative pressure, collects the dust on the surface of cable and passes through the connecting pipe and enters the collection box, and the dust is cleaned regularly through the movement collection board, effectively avoids the influence of dust to stripping process, improves stripping quality and efficiency, reaches the high advantage of stripping quality.

The bidirectional rope driving device is used for pulling the hand, wearing the rehabilitation gloves, of a patient and comprises a rope pulling unit and a driving unit, a multi-groove winding wheel is arranged in the rope pulling unit, and at least two pulling ropes which are relatively independent and opposite in winding direction are installed on the multi-groove winding wheel; the traction rope is connected with the fingers; the driving unit drives the multi-groove winding wheel to rotate so that the traction rope can be released or tightened. The multi-groove winding wheel rotates to drive the multiple traction ropes to drive fingers in the rehabilitation glove to bend or unbend, no elastic component is arranged in the whole component of the bidirectional rope driving device, and only the traction ropes are used for bidirectional active traction, so that the problem of non-linear return force introduced by an elastic return element is solved, and the rehabilitation glove is more stable in operation. The bending and stretching actions of the fingers are actively completed by the traction rope, the driving direction is clear, the retracting and releasing relation of the traction rope is controlled, relaxation and instantaneous stress sudden change are reduced, and the strength stability in the traction process is improved.

The invention relates to an anti-wrinkle composition and application thereof. The anti-wrinkle composition comprises a nostoc sphaeroids kutz extract, hydroxydecyl ubiquinone, rutin and raspberry ketone glucoside. The invention creatively finds that the common nostoc extract, the hydroxydecyl ubiquinone, the rutin and the raspberry ketone glucoside are matched for use and have a synergistic effect, so that the composition has good wrinkle-removing and anti-oxidation effects, and can recover skin elasticity, accelerate skin cell viability, reduce skin laxity and recover the health state of the skin.

This utility model provides a supportive lifting bra, including side wings, cups, and a support portion. The side wings surround the torso, the cups cover the breasts, and the support portion is located on the side of the cup facing the breast. The support portion is fixedly or detachably connected to the bottom of the cup. The support portion includes one of an oil bag, a lamb's body oil bag, and a jelly-like powder tablet. This design allows the support portion to conform to the bottom edge of the breast from bottom to top, forming a continuous and uniform support surface for the breast soft tissue, reducing the instantaneous tensile stress of gravity, and slowing down the sagging and drooping caused by long-term traction on the breast suspensory ligaments. When the support is made of oil-filled pads or lamb-shaped oil-filled pads, it becomes soft and fluid under body temperature, adapting to the shape of the breasts and filling the gap between the breasts and the cups, avoiding empty cups and local pressure marks. When the support is made of gel-like powder, it provides moderate elasticity when compressed, forming a three-dimensional force system with the side wings, transferring some weight to the back and shoulders, reducing pressure on the chest. At the same time, it generates a directional force inward, causing fat from the outer and lower sides to flow towards the cleavage area, enhancing the gathering effect.

The present invention provides a hinge device which connects a pair of housings so as to be opened and closed, and has a hinge mechanism sandwiched between the pair of housings, the hinge mechanism being capable of reducing slack or tension caused on a flexible display panel when an electronic device is in three states such as an inward folded state, an unfolded state, and an outward folded state. The hinge mechanism includes: a first joint portion and a second joint portion that support the pair of housings so as to be opened and closed; a first restricting portion that restricts rotation of the second joint portion in the first direction with respect to the first joint portion when the first joint portion rotates in the first direction; a second restricting portion that restricts rotation of the first joint portion in a second direction, the second direction being different from the first direction, within a certain angle range; and a first restriction release part which is provided on the first restriction part and releases rotational restriction caused by the first restriction part when the second joint part rotates in the second direction. The hinge device selects the first joint part and the second joint part according to the included angle of the pair of shells and enables the first joint part and the second joint part to rotate.

The utility model relates to fruit and vegetable sorting technical field discloses a chain tensioning assembly, fruit and vegetable conveying mechanism and fruit and vegetable sorting device, chain tensioning assembly fixed bolster, rotating support, tensioning part and elastic abutment part, rotating support rotation is connected in fixed bolster, tensioning part is connected in rotating support, and tensioning part includes abutment cambered surface, one end of elastic abutment part is connected in rotating support, elastic abutment part can take place elastic deformation, and fixed bolster is provided with elastic force, makes abutment cambered surface and tightens chain. The end of elastic abutment part is connected to the rack away from the rotating support. To solve the technical problem that the chain may be slackened in the working process in the prior art.

Provided is a low-dielectric glass cloth that is less slack and has uniform characteristics of thickness, air permeability, and resin impregnation, and a prepreg and a printed circuit board obtained using the glass cloth. A glass cloth that is composed of a glass yarn formed of a plurality of glass filaments as warp and weft, the thickness of the glass cloth being 5 μm to 100 μm, the length in the width direction of the aforementioned glass cloth being 1000 mm or more, and the difference X between the width of the warp at the width direction end portion and the width of the warp at the width direction central portion of the aforementioned glass cloth being α or less, where α is the standard deviation of the width of the warp.

Embodiments of a radially collapsible and expandable prosthetic heart valve (10) are disclosed. A valve frame (12) can have a tapered profile when mounted on a delivery shaft, with an inflow end portion having a smaller diameter than an outflow end portion. The valve can comprise generally V-shaped leaflets (40), reducing material within the inflow end of the frame. An outer skirt (18) can be secured to the outside of the inflow end portion of the frame, the outer skirt having longitudinal slack when the valve is expanded and lying flat against the frame when the valve is collapsed. A diagonally woven inner skirt (16) can elongate axially with the frame. Side tabs (116) of adjacent leaflets can extend through and be secured to window frame portions (30) of the frame to form commissures. The window frame portions can be depressed radially inward relative to surrounding frame portions when the valve is crimped onto a delivery shaft.

This utility model relates to the field of film winding machine technology, specifically a film winding machine for reverse osmosis membrane processing: it includes a support frame, a first motor fixedly connected to the surface of the support frame, a take-up roller mounted on the output shaft of the first motor, and a constant pressure mechanism provided on the surface of the support frame, the constant pressure mechanism including a guide rail fixedly connected to the surface of the support frame. This utility model uses the output shaft of a second motor to drive a bidirectional lead screw to rotate. The bidirectional lead screw, through rotation, drives two sets of square nuts to slide on the surface of the support frame. During the sliding process, the square nuts drive a lifting plate to rise and fall via an adjusting rod. The lifting plate, during its sliding process, drives a lifting bracket and a pressure roller to rise and fall, thereby changing the pressure value of the pressure roller on the membrane material on the take-up roller. This ensures that the pressure roller always applies constant pressure to the membrane material on the take-up roller, ensuring that the membrane material is tightly wound on the take-up roller, reducing membrane roll slack and deformation, and improving the quality of winding.

Embodiments of a radially collapsible and expandable prosthetic heart valve (10) are disclosed. A valve frame (12) can have a tapered profile when mounted on a delivery shaft, with an inflow end portion having a smaller diameter than an outflow end portion. The valve can comprise generally V-shaped leaflets (40), reducing material within the inflow end of the frame. An outer skirt (18) can be secured to the outside of the inflow end portion of the frame, the outer skirt having longitudinal slack when the valve is expanded and lying flat against the frame when the valve is collapsed. A diagonally woven inner skirt (16) can elongate axially with the frame. Side tabs (116) of adjacent leaflets can extend through and be secured to window frame portions (30) of the frame to form commissures. The window frame portions can be depressed radially inward relative to surrounding frame portions when the valve is crimped onto a delivery shaft.

The invention discloses specification-adjustable flexible flat cable processing equipment, and relates to the technical field of flat cable processing, the specification-adjustable flexible flat cable processing equipment comprises an equipment main body, wire drawing seats, a mounting disc and a tin immersion device, a first sliding groove is formed in the upper end of the equipment main body, a first driving shaft is movably mounted on the inner wall of the first sliding groove, and movable blocks are mounted at the bottom ends of the two wire drawing seats; a second sliding groove is formed in one end of the equipment body, a first transmission shaft is movably installed on the inner wall of the second sliding groove, a movable seat is movably installed on the inner wall of the second sliding groove, a mounting seat is installed at the end, extending to the outer wall of the second sliding groove, of the movable seat, and a mounting seat is installed on the outer wall of the mounting seat. By arranging the wire pulling seat, the mounting seat, the mounting disc and the movable seat, while the wire pulling seat drives one end of a flat cable to displace, the mounting seat drives the mounting disc and a flat cable roll on the outer wall of the mounting disc to displace, so that the looseness of flat cable conveying is prevented from being reduced, the influence on subsequent processing is reduced, and the practicability of the flat cable equipment is improved.

The invention discloses polylactic acid composite microspheres for injection, a production process and application, and belongs to the technical field of medical materials.The preparation method comprises the steps that poly-L-lactic acid and racemic polylactic acid are dissolved in an organic solvent to obtain an oil phase; dissolving an emulsifier in water to obtain a water phase; and mixing the oil phase and the water phase under stirring, and removing redundant solvent to obtain the polylactic acid composite microspheres for injection. According to the invention, the L-polylactic acid and the racemic polylactic acid are simultaneously dissolved to form an oil phase to prepare the composite microspheres, so that the long-acting polylactic acid microspheres and the short-acting polylactic acid microspheres are jointly prepared and uniformly blended; meanwhile, the prepared composite microspheres have proper particle size distribution. The skin filling composition composed of the composite microspheres prepared by the invention has few adverse reactions after being injected into a body, can quickly increase the fullness of skin, improve wrinkles, relieve skin laxity and other problems at the initial stage of injection, and can be maintained for more than 2 years for a long time.