54results about How to "Clamping force adjustment" patented technology

The invention discloses a mould-assembling mechanism for an injection molding machine and a balancing and adjusting method for a mould-assembling force thereof. The mould-assembling mechanism comprises a rear mould plate (1), a moveable mould plate (2), a front mould plate (3), a toggle rod mechanism (4), four pull rods (5) and a pull rod adjusting mechanism, wherein the pull rod adjusting mechanism comprises strain foils (6), servo motors (7) and front nuts (8) which are one-to-one corresponding to the four pull rods (5); the positions and directions of the strain foils (6) on the four pull rods (5) are consistent; the peripheral surfaces of the front nuts (8) are gear-shaped; driving gears (9) are connected with the servo motors (7); and the driving gears (9) are engaged with the peripheral surfaces of the front nuts (8). The uniform stress of the four pull rods is realized by adopting a closed-loop feedback control balancing and adjusting method, so that the function of balancing and adjusting the mould-assembling force is achieved, the reliability of the mould-assembling mechanism is high and the service life is long.

The invention relates to the technical field of textiles and discloses a textile machine yarn guide device. The textile machine yarn guide device comprises a bottom plate, a first fixing seat is arranged on the left side of the upper surface of the bottom plate, a containing groove is formed in the upper portion of the first fixing seat, a winding roller is arranged in the containing groove, a second fixing seat is arranged in the middle of the upper surface of the bottom plate, a tension roller is connected with the upper portion of the second fixing seat in a rotating mode, a third fixing seat is arranged on the right side of the upper surface of the bottom plate, a supporting roller is connected with the middle of the third fixing seat in a rotating mode, a sliding groove is formed in the upper portion of the third fixing seat, a pressing roller is connected with the lower portion of the sliding groove in a sliding mode, a pressing block is connected with the middle of the sliding groove in a sliding mode, and the upper portion of the pressing block is connected with the lower end of a spring. According to the textile machine yarn guide device, the pressing roller capable of sliding vertically is arranged on the right side of the device, and thus the free end of yarn is clamped tightly through the pressing roller and the supporting roller; and besides, the deformation amountof the spring changes along with rotation of a lead screw, and thus the clamping force of the pressing roller to the yarn can be adjusted freely.

A butterfly spring connector comprises a framework, a butterfly spring, a supporting plate and a clamping plate, all of which are integrated. The framework has a first frame and second and third frames on the two sides of the first frame, and the first, second and third frames define a bottom side. The butterfly spring includes an upper elastic piece, a lower elastic piece and a side elastic piece which are connected in sequence, wherein the upper elastic piece and the lower elastic piece form an included angle which is an acute angle, the lower elastic piece and the side elastic piece form an included angle, the side elastic piece faces a direction vertical to the bottom side, and at least part of the edge of the side elastic piece is connected with the first frame. The supporting plate is formed at the third frame, and can abut against the lower elastic piece when the upper elastic piece of the butterfly spring is deformed under external force. The clamping plate is formed at the second frame, and is used for clamping a cable together with the upper elastic piece of the butterfly spring. The extending directions of the supporting plate and the clamping plate are the same with the extending direction of the side elastic piece when the side elastic piece is bent from the first frame.

The invention provides a direct current railway steel rail flash butt welder for rapid pressure maintaining push protruding. The direct current railway steel rail flash butt welder comprises a frame (100), a movable frame (200), a fixed frame (300), a rail web clamping mechanism (400), a vertical electrode clamping mechanism (500), a horizontal steel rail adjusting mechanism (600) and a steel railwelding connector push protruding mechanism (700). By means of the direct current railway steel rail flash butt welder for rapid pressure maintaining push protruding, during welding upsetting, a connector is evenly stressed up and down, the bending moment caused by upsetting is eliminated, and accordingly straightness of a steel rail flash welding head is ensured. Through an independent push protruding mechanism and a special push protruding oil cylinder, push protruding in the state of vertical and horizontal connector displacement locking (connector pressure maintaining) is achieved, and the situation of connector pulling at the high temperature is avoided; and through a steel rail web connecting rod clamping mechanism, the steel rail web clamping efficiency is further improved, and meanwhile the clamping force can be adjusted by adjusting the connecting rod angle.

The invention relates to the technical field of production and assembling of a gearbox housing of a new energy automobile, in particular to a self-clamping lifting mechanism comprising a fixed shaft,a bracket, a clamping arm, a clamping claw, a sliding sleeve, a lifting ring, a connecting sleeve, an internal thread rotating sleeve, and a screw rod. The bracket is arranged at the bottom of the fixed shaft; and a chute is formed in the bracket. The clamping arm is hinged to the chute; and the clamping claw is connected to the clamping arm. According to the invention, an external device hooks the lifting ring and drives the sliding sleeve to slide on the fixed shaft in a sleeving manner; the screw rod is dragged to drive the clamping arm to rotate along a hinge part with the bracket, therebyrealizing clamping and thus realizing automatic clamping during the lifting process. With the internal thread rotating sleeve, the screw rod, and the connecting sleeve, the internal thread rotating sleeve rotates to drive the screw rod in threaded connection to move along the axial direction of the connecting sleeve, thereby realizing adjustment of the clamping force of the clamping arm; and withthe adjusting mechanism, adaptability to lifting of gearbox housings with different sizes is enhanced.

The invention relates to a telescopic manipulator claw arm structure and belongs to the field of manipulators. The telescopic manipulator claw arm structure comprises a U-shaped connecting plate, a concentric-square-shaped frame, a partition plate, a telescopic adjusting component and the like. The hollow-square-shaped frame is fixedly connected to the rear side of the U-shaped connecting plate, the partition plate is fixedly connected to the middle in the hollow-square-shaped frame, the telescopic adjusting component is arranged on the hollow-square-shaped frame, and through cooperation of a movable pulley and other devices, the telescopic manipulator claw arm structure is adjusted to extend, meanwhile, the position of a pushing plate can move upwards, and the force application point of the pushing plate on a slotting swing rod moves upwards, so that a power arm is lengthened; therefore, the clamping force of the clamping strip to an object is increased, and the purpose of adjusting the clamping force according to the length of the object is achieved.

The invention relates to a detection device convenient to adjust and clamp for processing electronic parts for communication. The detection device comprises an equipment box body and a connecting gear, wherein a first motor is arranged below the equipment box body, a first guide rod, a first threaded rod and a guide rail are sequentially arranged in the equipment box body from left to right, a supporting block is fixed at the upper end of a connecting plate, one end of a second motor is connected with a first bevel gear, a first wheel shaft is arranged outside a first rotating shaft, and a limiting fixing block, a storage box, a telescopic opening, a positioning baffle, a collecting opening and a USB expansion block are sequentially arranged at the upper end of the equipment box body fromleft to right. The detection device convenient to adjust and clamp for processing the electronic parts for communication has the beneficial effects that a clamping structure is prevented from being loosened during clamping force adjustment through a spring, the clamping force of the equipment is converted into the telescopic amount of the spring through the spring, so that the clamping force of the clamping structure can be visually measured and adjusted.

The invention relates to a rapid testing tool for a pulling force of a self-tightening type binding tape. The rapid testing tool comprises a base, a wire winding rod and a limiting device, wherein thebase is internally provided with a through groove which is transversely arranged and is provided with openings at two ends; an opening, which is communicated with the inner part of the through groove, is formed in the upper end of the base; the wire winding rod is adaptively inserted into the through groove; the limiting device is mounted on the base and is close to the opening; after two ends ofthe binding tape winds around the wire winding rod, the binding tape stretches out from the opening and a stretching-out part of the binding tape is clamped through the limiting device. According tothe rapid testing tool provided by the invention, the wire winding rod, the through groove and the limiting device are matched, so that the binding tape is wound on the wire winding rod; in a processof upward lifting the wire winding rod, the tool can ensure that slippage and dislocation of the binding tape do not occur in an initial upward movement process; when the binding tape moves upward under the action of an external force, the wire winding rod slides upward along the through groove of the base, and a gap between the wire winding rod and the through groove of the base is reduced, so that a self-tightening process of the binding tape is realized.

The invention discloses a head fixing device based on surgical nursing, and relates to the field of surgical nursing. The head fixing device based on surgical nursing comprises a surgical nursing bed, two sets of sliding arms and an arc-shaped clamping seat. When the head fixing device for surgical nursing is used, the head of a patient can be conveniently fixed, so that surgical nursing operation is facilitated, and when the head of the patient is fixed, the patient only needs to lie on a surgical nursing bed and the head is placed on a head pillow, so that the head of the patient is fixed. The two sets of sliding arms, the arc-shaped clamping seat and the arc-shaped rubber elastic blocks can be controlled to move by rotating the rotating handle, so that the head of the patient is clamped between the two sets of arc-shaped rubber elastic blocks and the head pillow, and the head of the patient can be heated by installing and fixing an arc-shaped electric heating block and a heat ventilation pipe in the arc-shaped clamping seat.

The invention discloses a drying device for cotton yarn production, and relates to the field of spinning. The drying device comprises a bottom plate and a box body, wherein the box body is fixedly connected to the upper end of the bottom plate through a plurality of supporting rods, a yarn inlet and a yarn outlet are formed in the left side wall and the right side wall of the box body correspondingly, an extrusion mechanism and a drying mechanism are arranged in the box body, the extrusion mechanism comprises a threaded hole formed in the upper end of the box body in a penetrating mode, and a threaded rod is in threaded connection with the interior of the threaded hole. By arranging the extrusion mechanism, cotton yarn to be dried can be pretreated, the cotton yarn with high liquid content is extruded, and thus later drying time is shortened; by arranging the threaded rod, the clamping force between a pressing roller and a rotating roller can be adjusted; meanwhile, by arranging a spring, the threaded rod can be prevented from loosening, so that the pressing roller keeps downward pressure all the time; and by arranging a flow guide cover and a flow guide plate, disordered hot air generated by a hot-air blower can be treated, and thus the drying efficiency is improved.

The invention discloses an auxiliary thread clamping mechanism of a sewing machine. The auxiliary thread clamping mechanism comprises a mounting structure, an auxiliary thread clamping structure and athread roller structure. The mounting structure comprises a mounting plate, a first fixing structure is arranged on the mounting plate, a U-shaped sliding groove is fixedly formed at the bottom sideof the mounting plate, a sliding plate is slidably connected to the interior of the U-shaped sliding groove, a supporting plate is fixedly arranged at the bottom side of the sliding plate, and a limiting structure is arranged at the position, located at the left of the sliding plate, of the bottom side of the mounting plate; and the auxiliary thread clamping structure comprises a first installation column, a baffle ring is fixedly arranged on the side face of the first installation column, a thread limiting structure is arranged on the side face of the baffle ring, and a thread clamping blockis connected to the position, located on the outer side of the baffle ring, of the side face of the first installation column through a bearing. The auxiliary thread clamping mechanism of the sewing machine is simple in structure, the clamping force of the thread clamping mechanism can be adjusted, use is convenient, in addition, the wire clamping mechanism can be rapidly installed, and disassembly and maintenance are facilitated.

The invention discloses a hanging device for electroplating a printed circuit board, and relates to the technical field of circuit boards. The hanging device comprises a mounting plate, wherein threesets of clamping mechanisms are uniformly and fixedly mounted on the portion, close to the lower side, of the front side face of the mounting plate, and a guide mechanism is fixedly connected to the position, close to the upper side, of the rear side faces of the clamping mechanisms; the guide mechanism is inserted into the rear side face of the mounting plate, and the rear side face of the guidemechanism is fixedly connected with a movable plate; and an adjusting mechanism capable of adjusting the tightness of the clamping mechanisms is fixedly connected to the position, close to the top, ofthe front side face of the movable plate, and the portions, close to the left side and the right side, of the rear side face of the mounting plate are each provided with an alarm mechanism. The clamping force of the clamping plate can be strengthened through the guiding mechanism, so that clamping is firmer, and the clamping force is conveniently adjusted through the cooperation of the adjustingmechanism; meanwhile, the opening and closing of the multiple sets of clamping mechanisms can be synchronously operated, and then the alarm mechanism is installed on the mounting plate, so that the alarm mechanism is safer to use, and the use is safer.

The invention discloses an oral teaching imitation head model manual pitching mechanism, and the mechanism comprises a rotating shaft, a rotating shaft seat, a lever fulcrum shaft, a prized shaft, a clamping block, a wrench rod assembly, and a pre-pressing spring assembly. The wrench rod assembly comprises two wrench rods which are set at an interval, a wrench handle and a connecting rod, whereinthe wrench handle and the connecting rod are connected between the two wrench rods. Each wrench rod comprises a straight rod part and an S-shaped curved rod part which is formed at one end of the straight rod in an extending manner. The pre-pressing spring assembly comprises a pre-pressing spring and an adjustment fastening part. According to the invention, the wrench rod assembly and the prized shaft and the lever fulcrum shaft installed on the clamping block form a lever and eccentricity dual-labor-saving mechanism, and the pre-pressing spring assembly is used for providing a clamping forceso that the clamping block clamps the rotating shaft tightly, thereby forming the manual and labor-saving mechanism provided by the invention which is convenient to install, is firm in structure and is low in fault rate.

The invention belongs to the technical field of bionic devices, and in particular relates to a varanus salvator tooth imitation clamping device. The device comprises a fixing plate, and two fixing rods are symmetrically fixed on one side of the fixing plate; a hollow cavity is arranged in the fixing plate, and a battery and a controller are fixedly connected to the interior of the hollow cavity; afirst switch and a second switch are fixedly connected to the outer side of the fixing plate; and object storage grooves are arranged in opposite sides of the two fixing rods, the interior of each object storage groove is provided with a threaded rod, and a slide block is in screw connection with each threaded rod. The device has a reasonable and novel structure, by simulating occlusion of varanus salvator teeth, in the entire operation process, compared with mechanical surgical forceps, the device provided by the invention reduces the holding strength of a medical worker during use, at the same time, the holding strength can be adjusted, the length of the device can be adjusted, and the device has a good use effect.

An electromagnetic clamp for clamping an air cylinder sleeve is characterized by comprising a base, two supports are fixedly connected to the upper surface of the base, threaded holes are formed in the end face and the upper surface of the first support and used for installing an end cover and a locking screw, the end cover and the locking screw are used for fixing a clamping chuck, the clamping chuck is provided with grooves which are evenly distributed in the circumferential direction, and the grooves are used for clamping the air cylinder sleeve. End faces of the coils are connected with packaging coils, the packaging coils are evenly distributed in the circumferential direction, and arc-shaped iron cores are arranged in the packaging coils. The end face of the second support is connected with a limiting plate, and the limiting plate is used for guaranteeing the consistency of the air cylinder sleeving and clamping positions. By changing the current direction in the coil, clamping of the inner hole and the outer circle of the cylinder sleeve can be achieved, by changing the current magnitude, the clamping force can be adjusted, and the clamping device is simple in structure, long in service life, high in applicability and low in manufacturing cost.