59 results about "Tooth Component" patented technology

The present invention relates to methods for curing polymeric dental appliances comprised of partially cured photopolymerizable components, especially for additively manufactured denture base and artificial tooth components utilized in the production of full and partial dental prostheses. In particular, the invention relates to methods of utilizing a curing apparatus having one or more controllable heating sources and one or more controllable LED light sources to achieve specific preheating and light curing conditions for more effectively converting partially cured photopolymerizable components from a partially cured state to a final cured state.

The utility model provides cleaning equipment. The cleaning equipment comprises a machine body, a cleaning part and a comb tooth part, the machine body is provided with a containing cavity, the containing cavity is provided with a dust collecting opening, the cleaning part is rotatably arranged in the containing cavity around the central axis of the cleaning part, the cleaning part is provided with a sweeping part, and the comb tooth part comprises a mounting plate and a plurality of comb teeth used for cleaning the sweeping part. The mounting plate is detachably mounted on the wall of the containing cavity, the comb teeth are arranged on the mounting plate and arranged in the axial direction of the cleaning component, and the included angle between the comb teeth and the axial direction of the cleaning component is larger than or equal to 65 degrees and smaller than or equal to 85 degrees. According to the cleaning equipment, the cleaning effect of the comb teeth on the cleaning part is good, and the comb tooth part is convenient to disassemble and assemble.

The utility model discloses a soil comb for a film mulching direct seeding machine, which relates to the technical field of agricultural machinery and comprises a mounting beam, a positioning component, a support, a fixing component and a comb tooth component. A plurality of groups of positioning assemblies are arranged on the mounting beam, and each group of positioning assemblies is connected with one support, so that the distance between the supports can be adjusted; each support is connected with the corresponding comb tooth assembly through a set of fixing assemblies so that each comb tooth assembly can be independently disassembled and assembled. The distance between every two adjacent comb tooth assemblies can be adaptively adjusted according to the working environment and the planting requirement, the using effect is improved, the comb tooth assemblies can be independently disassembled and assembled, and the practical performance is greatly improved.

This invention discloses a forced-drive comb-tooth tower garage suitable for low-rise buildings in the field of automated parking systems. The transverse comb-tooth frame includes a transverse frame with arrayed comb-tooth components on both sides. The lifting comb-tooth frame includes symmetrically arranged lifting frames with fixedly connected adapter frames at both ends. Each adapter frame has a welded forced-drive frame. The lifting frames have arrayed comb-tooth components on their sides and symmetrically distributed rotating rods at their lower ends. Symmetrically distributed rectangular limiting posts are located within the forced-drive frames. In this invention, the limiting plates within the comb-tooth components of the forced-drive comb-tooth tower garage can automatically rotate and rise, preventing vehicle displacement and rollover caused by vibrations during the lifting and lowering of the lifting comb-tooth frame, the exchange of positions between the transverse and lifting comb-tooth frames, and the transverse movement of the transverse comb-tooth frame. The lifting comb-tooth frame has a horizontal detection function and a fault protection function.

The utility model relates to the technical field of motors, in particular to a motor stator and a motor. Comprising an annular stator iron core ring and an iron core tooth assembly installed on the stator iron core ring, the iron core tooth assembly is sleeved with a winding coil, and the iron core tooth assembly comprises an iron core tooth body and iron core tooth end blocks installed at the two ends of the iron core tooth body; positioning holes are formed in the two ends of the iron core tooth body respectively; a positioning column is integrally formed on a plane where the iron core tooth end block is matched with the core tooth body; and the positioning column is inserted into the positioning hole of the iron core tooth body. The positioning column is inserted into the positioning hole of the iron core tooth body, so that the problem that the iron core tooth end block slips off when a winding coil is assembled can be avoided.

This utility model provides a cleaning device and equipment. The cleaning device includes: a housing; a cleaning component for cleaning the surface to be cleaned; a mounting component detachably mounted to the housing, wherein when the mounting component is mounted to the housing, the housing and the mounting component together limit the cleaning component to prevent it from detaching from the housing; and a comb-tooth component mounted to the housing, spaced apart from the mounting component, the comb-tooth component having a comb-tooth structure to separate foreign objects from the cleaning component. The cleaning device of this utility model solves the technical problem in related technologies where poor accuracy and / or reliability of the comb-tooth component installation leads to poor separation of foreign objects from the cleaning component.

The utility model discloses a hair curling structure and a hair curling comb, and relates to the technical field of hairdressing equipment.The hair curling structure comprises a heat conduction base body of a barrel-shaped structure and a hair curling comb, the comb tooth assemblies are distributed along the circumference of the heat conduction base body, and each comb tooth assembly comprises a first comb tooth piece installed on the heat conduction base body; the first comb tooth piece comprises a plurality of comb tooth sets, the comb tooth sets are arranged at intervals in the first direction, each comb tooth set comprises a plurality of first comb teeth, the first comb teeth are arranged in the first circumference, and the first comb teeth and the axis of the heat conduction base body are arranged at a preset angle. According to the technical scheme, the problem that an existing curly hair comb cannot well grab hair can be solved.

The utility model provides an improved hair straightening air comb structure. The improved hair straightening air comb structure is technically characterized by comprising a heat insulation comb tooth assembly, a heating comb tooth assembly and a heating assembly. The first heat insulation cover is provided with a cover-shaped first containing space with a downward opening, and the heat conduction plate and the heating assembly are arranged in the first containing space in a covering mode; the second heat insulation cover is provided with a cover-shaped second containing space with a downward opening, and the first heat insulation cover is arranged in the second containing space in a covering mode; the shell is provided with an opening matched with the outer contour of the heat insulation bottom shell, the second heat insulation cover is contained in the third containing space, the third containing space backwards extends out of a handle part of the cylindrical space, a fan assembly is arranged in the handle part, and an air inlet hole is formed in the handle part. An air separation layer is formed between the first heat insulation cover and the second heat insulation cover, two-way conduction of heat can be prevented, heat loss can be obviously reduced, the temperature of natural cold air cannot rise, the air volume is larger, the temperature is lower, and the rapid shaping effect is better.

The utility model discloses a pen capable of automatically retracting and releasing a pen clip, which comprises a pen holder, a pen core, a telescopic locking mechanism, a button, a spring and the pen clip, the pen core and the telescopic locking mechanism are arranged in the pen holder, the button is movably arranged at the rear end of the pen holder, the telescopic locking mechanism is linked with the pen core and the button, the spring is arranged between the front end of the pen core and the pen holder, and the pen clip is arranged in the pen holder. The telescopic locking mechanism comprises a front tooth part, a rear tooth part and a guide rail, the pen holder is provided with an opening, the pen clip is laterally and movably arranged at the opening, a transmission rod is connected between the telescopic locking mechanism and the button, the pen clip comprises a connecting end, the connecting end comprises a sleeving hole, the transmission rod is movably arranged in the connecting hole, and the connecting hole is provided with a convex block. Guide slopes are arranged on the two sides of the transmission rod, the front end of the transmission rod is in fixed fit with the rear tooth component, and the front end of the transmission rod is in limiting fit with the front tooth component. The pen capable of automatically folding and unfolding the pen clip is fewer in parts, simpler in structure and capable of automatically folding and unfolding the pen clip.

The utility model relates to the field of agricultural spreading and airing, and discloses a scattering tooth component for a spreading and airing machine, which comprises a supporting ring seat for supporting, a spreading and airing disc is fixedly connected to the top end of the supporting ring seat, a folding soft rubber layer is fixedly connected to the inner side of the spreading and airing disc, and a discharging pipe is fixedly connected to the middle of the inner side of the folding soft rubber layer. A lower pressing disc is fixedly connected to the exterior of the discharging pipe, a discharging round sleeve is fixedly connected to the lower side of the interior of the supporting ring base, a collecting box is fixedly connected to the bottom end of the discharging round sleeve, the collecting box is a curved surface and used for achieving smooth discharging of internal raw materials, and a traction lower pressing assembly is installed outside the discharging pipe. And the bottom end of the lower pressing disc is fixedly connected with a plurality of limiting rods, and the outer portions of the limiting rods are correspondingly inserted into the discharging round sleeves in a penetrating mode. According to the device disclosed by the utility model, aired raw materials can be quickly collected, so that the consumption of manpower is reduced, the uniform dispersion of the materials is ensured, and the spreading and airing efficiency is improved.

The utility model discloses a waistband fixing buckle with a double-layer latch structure, which comprises a waistband buckle, the clamping tooth component comprises side plates, rotating rollers and tooth blocks, the side plates are fixed to the lower portions of the two ends of the outer surface of the belt buckle, the rotating rollers are installed on the inner surface of the belt buckle, and the tooth blocks are of a double-layer structure and comprise the upper-layer tooth block and the lower-layer tooth block. The rotating roller, the inner groove, the spring, the handle, the cross rod and the tooth blocks are arranged on the inner surface of the belt buckle, and the double-layer tooth blocks are arranged on the outer surface of the rotating roller, so that the belt buckle can play a role in multiple layers, and the occlusal force is remarkably improved; the upper-layer tooth block and the lower-layer tooth block can make close contact with the waistband from different angles and positions, so that the friction force between the tooth blocks and the waistband is greatly increased, and the waistband can be more effectively grabbed and prevented from sliding.

The utility model discloses a stitch length adjusting mechanism for a flat seaming machine, which belongs to the technical field of flat seaming machines, and comprises a feed dog assembly and a stitch length adjusting assembly, the feed dog assembly comprises feed dogs, an eccentric wheel, a main shaft, a synchronizing part, a driven gear and a feed dog motor, and the stitch length adjusting assembly comprises a stitch length adjusting motor, a driving gear and a driver. The stitch length adjusting motor and the feed dog motor are respectively provided with an output shaft, the driving gear is movably arranged on the output shaft of the stitch length adjusting motor, the driver is in driving connection with the driving gear, the driven gear is fixedly arranged on the output shaft of the feed dog motor, and the feed dog motor is arranged on the driven gear. The driving gear is movably meshed with the driven gear, the synchronizing part is connected with an output shaft of the feed dog motor and one end of the main shaft, the other end of the main shaft is connected with the eccentric wheel, the feed dog is arranged on the main shaft, and the eccentric wheel is connected with the feed dog.

The utility model discloses a hair root fluffing clip, which belongs to the technical field of hairdressing appliances and comprises a main body, at least two groups of clip tooth components and heating devices, the clip tooth components comprise fixed clip teeth and movable clip teeth, the clip tooth components are arranged at one end of the main body in an openable and closable manner, and the heating devices are arranged on the main body and the clip tooth components. The hair root shaping device can solve the problems that the waiting time for hair root shaping is long and the fluffy effect is not lasting.

The invention provides a worm gear linear driving structure. The worm gear linear driving structure comprises an inner spiral tooth component, a rod piece, a plurality of worm gear sets and a pre-pressing piece set. The inner spiral tooth component is provided with an inner hole extending in the axial direction, and a spiral tooth structure is arranged on the inner circumferential face of the inner spiral tooth component. The rod piece is arranged in the inner hole in a penetrating mode and extends in the axial direction. The worm gear sets are arranged in the inner hole and arranged between the inner spiral tooth component and the rod piece. Each worm gear set comprises at least one worm gear, a tooth structure is arranged on the peripheral face of the worm gear, the tooth line of the tooth structure is meshed with the tooth line of the spiral tooth structure in a crossed mode, and the worm gear is in friction contact with the peripheral face of the rod piece. The pre-pressing piece set is arranged on the radial outer side of the worm wheel set and used for applying pre-pressing force to the worm wheel set, so that static friction force is formed between the worm wheel and the rod piece. When the inner spiral tooth component is driven to rotate, the worm gear can be driven to rotate, and the rod piece is pushed to move in the axial direction through the worm gear. When the rod piece bears reverse external force exceeding the static friction force, the rod piece slides relative to the worm gear set.

The utility model discloses a forklift prong convenient to adjust, which comprises a mounting rack, two prong components are mounted outside the mounting rack, the two prong components are positioned on the same level, each prong component comprises two hook frames which are sleeved outside the mounting rack in a sliding manner, and the two hook frames are fixedly connected through bolts. The two hook frame assemblies are rotationally connected with vertically-arranged connecting columns, the outer walls of the bottoms of the connecting columns are fixedly connected with horizontally-arranged fork tooth bodies, the tops of the two connecting columns are provided with the same driving assembly, clamping rings are arranged at the tops of the outer walls of the circumferences of the connecting columns, and the diameter of the clamping rings is larger than that of the connecting columns. According to the adjustable fork tooth, the driving assemblies are arranged, the inclination angle of the fork tooth body can be adjusted according to needs, the width of the two fork teeth can be increased, and the state of borne objects can be more stable.

The utility model discloses a transmission structure for a trephine and the trephine adopting the transmission structure, the transmission structure comprises a circular ring saw blade and a driving wheel, the circular ring saw blade is installed and positioned on a cutting main body of the trephine; the circular ring saw blade is provided with a sawtooth component arranged along the outer periphery of the circular ring saw blade and used for cutting and a gear ring component arranged along the inner periphery of the circular ring saw blade and used for transmission. The driving wheel is installed and positioned on a cutting body of the trephine and comprises a wheel body and a plurality of driving tooth pieces arranged in the circumferential direction of the wheel body. The driving wheel is arranged along the inner circumferential side of the circular saw blade, the driving tooth piece is in meshing transmission connection with the gear ring component, and the driving wheel can be driven by a driving device of the trephine to rotate around the axis of the driving wheel relative to the cutting body and drive the circular saw blade to rotate around the axis of the circular saw blade relative to the cutting body for operation. The circular saw blade of the transmission structure is engaged with the driving wheel for transmission, so that the stability of the rotation operation of the circular saw blade can be improved.

The embodiment of the utility model provides cleaning equipment. The cleaning equipment comprises a machine body, a cleaning part and a comb tooth part, the cleaning part is rotatably arranged in a containing cavity of the machine body around the central axis of the cleaning part, the cleaning part is provided with a sweeping part used for cleaning the surface to be cleaned, and comb teeth of the comb tooth part comprise the first row of comb teeth and the second row of comb teeth; the first row of comb teeth and the second row of comb teeth are arranged side by side in the circumferential direction of the containing cavity, the first row of comb teeth comprises a plurality of first comb teeth arranged at intervals in the axial direction of the cleaning component, the second row of comb teeth comprises a plurality of second comb teeth arranged at intervals in the axial direction of the cleaning component, and the first comb teeth and the second comb teeth are arranged in a staggered mode in the axial direction of the cleaning component. According to the cleaning equipment, the first row of comb teeth and the second row of comb teeth sequentially clean sundries wound on the cleaning piece, and when the cleaning piece rotates, the part, penetrating through the space between the adjacent first comb teeth, of the cleaning piece is cleaned by the second comb teeth, so that the cleaning effect of the comb teeth on the cleaning piece is good.

The utility model provides a worm gear linear driving structure and a worm gear linear driving module. The worm gear linear driving structure comprises an inner spiral tooth component, a rod piece, a plurality of worm gear sets and a pre-pressing piece set. The inner spiral tooth component is provided with an inner hole extending in the axial direction, and a spiral tooth structure is arranged on the inner circumferential face of the inner spiral tooth component. The rod piece is arranged in the inner hole in a penetrating mode and extends in the axial direction. The worm gear sets are arranged in the inner hole and arranged between the inner spiral tooth component and the rod piece. Each worm gear set comprises at least one worm gear, a tooth structure is arranged on the peripheral face of the worm gear, the tooth line of the tooth structure is meshed with the tooth line of the spiral tooth structure in a crossed mode, and the worm gear is in friction contact with the peripheral face of the rod piece. The pre-pressing piece set is arranged on the radial outer side of the worm wheel set and used for applying pre-pressing force to the worm wheel set, so that static friction force is formed between the worm wheel and the rod piece. When the inner spiral tooth component is driven to rotate, the worm gear can be driven to rotate, and the rod piece is pushed to move in the axial direction through the worm gear. When the rod piece bears reverse external force exceeding the static friction force, the rod piece slides relative to the worm gear set.

The utility model provides a hydraulic anchor rod drill carriage cable winding device which comprises a frame, a winding assembly and a tooth blocking assembly, a drill rod hydraulic system and a winding drum are arranged on the frame, the winding drum is rotationally arranged on the frame, and the winding drum is used for containing a cable; the winding assembly comprises a clockwork spring and a hydraulic motor, the clockwork spring and the hydraulic motor are both in transmission connection with the winding drum, the hydraulic motor is connected with a drill rod hydraulic system, and the clockwork spring and the hydraulic motor drive the winding drum to rotate; the tooth blocking assembly comprises ratchets and a limiting clamping jaw, the ratchets and the winding drum rotate synchronously, tooth grooves are formed in the ratchets, and the limiting clamping jaw is movably arranged on the frame, so that the limiting clamping jaw is inserted into the tooth grooves to limit rotation of the ratchets and the winding drum. According to the cable winding device of the hydraulic anchor rod drill carriage, orderly winding and flexible control of the cable can be achieved, and normal work of the drill carriage is guaranteed.

A safety switch device (1) comprises: a device body (2); a movable part (3) arranged to be movable relative to the device body in a predetermined moving direction; and a holding part (4) for holding the movable part at a desired position relative to the moving direction of the device body, wherein the device body comprises a main body side clamping part for tightly contacting one side of a portable terminal (100), the movable part comprises a movable part side clamping part, the movable part side clamping part and the main body side clamping part being arranged relative to each other in the moving direction and tightly contacting the other side of the portable terminal, and the holding part comprises: A rack (20) is provided on one of the device body or the movable part along the moving direction; an engaging tooth component (21) is provided on the other of the device body or the movable part and is supported to be movable in a direction intersecting the moving direction; and an elastic component (22) applies force to the engaging tooth component in a direction of engagement with the rack, wherein the rack and the engaging tooth component have the following shape: in the engaged state, they can move in a direction of reducing the gap between the clamping part on the main body side and the clamping part on the movable part side and cannot move in the opposite direction.

This invention discloses an automatic sampler for an inoculant production line, relating to the field of casting auxiliary material production and processing technology. It includes a silo, a storage tank, and a detection component. Both the storage tank and the detection component are located below one side of the silo, and the detection component is located on one side of the storage tank. The detection component includes a base, an electromagnetic chuck, and a first comb tooth component. The electromagnetic chuck and the first comb tooth component are located above the base. A second comb tooth component is located on one side of the first comb tooth component, above the electromagnetic chuck. When small pieces of material clump together, the second comb tooth component can move down to the same level as the first comb tooth component, thereby dispersing the clump. A material pipe is connected to a pipe below the silo, and the other end of the material pipe is connected to a pipe in the storage tank. An electric valve is connected to the end of the material pipe near the silo. This invention is highly practical and effectively solves the problem of large detection errors caused by inoculant material clumping.

This utility model discloses an automatic curling iron with easily replaceable comb teeth, including a curling iron shell. Inside the shell is a guide device, which includes a base plate. Pulling the guide plate upwards moves a T-shaped column, causing an inward force on a trapezoidal plate inside the T-shaped column groove. This compresses a spring and disengages a magnet from the inner bottom wall of the support rod, pulling the entire guide device out of the curling iron shell. This allows the internal guide rod to be easily removed for cleaning, enhancing the device's practicality. Twisting the hand-tightening ring on the turntable ejects an L-shaped connecting rod that is engaged inside the sleeve groove, disengaging the internal ring from the sleeve. Pulling the comb teeth then removes the structure. Controlling the turntable allows for quick and easy removal of the comb-tooth component, facilitating convenient comb tooth replacement.

The utility model relates to a kind of transmission gear and gearbox of integrated limit torque protection function, belong to hybrid vehicle or pure electric vehicle power transmission system technical field, solve the problem of broken axle or electromagnetic clutch easy to damage caused by excessive impact torque of wheel end pavement.This utility model includes outer tooth component, friction plate, transmission torque disc and cover plate, the utility model uses friction plate and transmission torque disc and other structures, when impact torque is less than specific value, transmission torque disc and friction plate rotate synchronously, when impact torque is greater than specific value, transmission torque disc and friction plate slide relative, the purpose of integrating limit torque protection function in transmission gear is achieved.

Elastic comb tooth structure comprising a heating comb tooth component, characterized in that: the heating comb tooth component comprises heating comb teeth, elastic comb teeth and a heating element, wherein the heating comb teeth are positioned between the elastic comb teeth, wherein the heads of the heating comb teeth are lower than the heads of the elastic comb teeth, so that the heads of the elastic comb teeth project beyond the heads of the heating comb teeth.

The utility model discloses a multifunctional hot air comb which comprises a comb handle body and a comb shell, a comb tooth component is arranged in the comb shell, a fixing mechanism used for fixing the comb tooth component is arranged on the comb shell, two inserting blocks are fixedly arranged on the outer wall of one end of the comb handle body, a limiting mechanism used for limiting the two inserting blocks is arranged at one end of the comb shell, and the two inserting blocks are arranged in the comb shell. A through groove is formed in the comb shell in a penetrating mode, a cover plate is hinged to the through groove, a fixing block is fixedly arranged at the bottom end of the cover plate, a fixing groove is formed in the top end of one end of the comb handle body, and the fixing groove is matched with the fixing block. The comb shell and the comb handle body can be further fixed through the cooperation of the fixing block and the fixing groove, and finally the comb can be replaced by an operator more conveniently and rapidly.

The utility model provides a kind of variable-pitch star disc and conveying device, belong to conveying equipment technical field, including installation shaft seat, cam disc and star disc tooth component. Transmission shaft is rotationally arranged on installation shaft seat, and the upper end of transmission shaft is provided with power disc;Cam disc is installed on power disc, and the circumferential of cam disc has the arc mounting area and straight line mounting area connected head to tail;Star disc tooth component includes multiple star disc teeth, and the outer side one end of star disc tooth all has arc-shaped adaptive slot, and multiple star disc teeth located in arc mounting area are sequentially arranged along the trajectory direction of arc mounting area, and multiple star disc teeth located in straight line mounting area are sequentially arranged along the trajectory direction of straight line mounting area.The utility model provides a kind of variable-pitch star disc, when with auger adapter, using large-pitch area, ensure the stability of the product to be detected conveying, reduce impact force, when with detection turntable adapter, using small-pitch area, ensure equipment compatibility, and then improve equipment stability, detection efficiency and production efficiency.

This invention discloses a three-quadrant split-type oral impression tray and its usage method. The tray is composed of a left posterior tooth component, a right posterior tooth component, and an anterior tooth component that can be detachably assembled. The left and right posterior tooth components are symmetrically structured, and each has a pair of L-shaped protrusions along its length. The anterior tooth component has corresponding mating grooves at the L-shaped protrusions. The metal connectors adopt a foolproof asymmetrical tenon design. After being inserted into the mating grooves, they achieve smooth locking through precise clearance tolerances. At the same time, magnetic suction pieces are pre-installed in the mating grooves. The tray can be quickly disassembled into three independent units, adapting to various scenarios of partial impression taking for single jaw full teeth, anterior teeth, and anterior teeth and unilateral posterior teeth. When taking an impression, the surface contact between each component and the oral tissue ensures stable support. When demolding, linear separation is achieved by disassembling the components to disperse resistance. All connectors and mating structures are located at the bottom of the tray, completely avoiding encroachment on the operating space outside the oral cavity.

The utility model provides a kind of chain wheel with tooth profile convenient to replace. The chain wheel with tooth profile convenient to replace includes sprocket, the sprocket tooth component for realizing quick disassembly, the fixed component for cooperating and fixing the sprocket tooth component, the sprocket includes multiple side grooves and multiple top hole groups, a kind of chain wheel with tooth profile convenient to replace of the utility model by sprocket tooth component, sprocket tooth can be quickly disassembled on chain wheel, to reduce chain wheel loss and maintenance cost while, also improve work efficiency, simultaneously by tooth top, root and fixed component cooperation work, the sprocket tooth root, tooth top is respectively connected with chain wheel, can be more firmly fixed on chain wheel, simultaneously also improve the disassembly speed of sprocket tooth, to improve the connection strength of chain wheel, to improve the working stability of chain wheel further.

The utility model relates to the technical field of artificial tooth implantation, and discloses a composite implant artificial tooth component, which comprises a mounting structure, a connecting structure and an implanting structure, the mounting structure is connected with the implanting structure through the connecting structure, the implanting structure comprises an implant, a sliding chute is arranged on the side wall of the implant, and the implant is connected with the connecting structure through the sliding chute. A first threaded rod is arranged in the implant sliding groove, limiting cylinders are symmetrically and fixedly installed on the outer wall of the implant, a fixing piece is fixedly installed on the inner wall of the implant sliding groove, a sliding rod is installed in the fixing piece in a sliding mode, and the sliding rod is connected with the implant sliding groove in a sliding mode through the sliding piece. And the sliding rod automatically extends into the limiting ring groove under the elastic force of the second spring, so that the first threaded rod is limited, excessive rotation or movement of the first threaded rod in the mounting process can be avoided, the accuracy and stability of the mounting position of the first threaded rod are ensured, and excessive displacement or shaking of the first threaded rod in the using process is avoided.

The utility model discloses a plum blossom reducing die assembly for a torsional shear type steel structure bolt, which comprises an upper guide die, a lower guide die, an upper die sleeve and a lower die sleeve, the lower guide die is mounted in the lower die sleeve, and a lower through hole is formed in the lower guide die; the reducing die is mounted between the lower guide die and the upper guide die, and a plurality of tooth grooves are formed in the reducing die; the upper die sleeve is connected with the lower die sleeve, an upper extrusion head is arranged above the upper through hole, a lower extrusion head is arranged below the lower through hole, a bolt is pressed into the reducing die from the upper through hole through the upper extrusion head, and the bolt is pushed out of the reducing die through the lower extrusion head. And a scraping tooth assembly is arranged on the lower extrusion head, is matched with the reducing die and is used for scraping residual materials in the reducing die. Through the arrangement of the scraping tooth assembly, residual materials in the tooth grooves of the reducing die are effectively scraped, the phenomenon that the die is expanded and broken due to accumulation of the residual materials is avoided, and therefore the service life of the reducing die is remarkably prolonged.