578results about How to "Prevent extrusion" patented technology

An apparatus for communication between a site within a body and a source, depot, reservoir, device or machine external to the body via the mouth of the body, comprising an implant for placement in tooth-supporting bone, the implant having a first portion extending into the mouth external to the tooth-supporting bone, a second portion for being embedded in the tooth-supporting bone, and an opening extending along the implant from the first portion to the second portion. A sealing cap containing an antimicrobial substance may be provided to provide a seal when the apparatus is not in use. An external pump may infuse various medications or liquids, including those required by a person having a diabetic condition.

It is sought to provide a rear casing arrangement for a magnetic drive pump, which can sufficiently provide such functions pressure resistance and heat resistance, which give rise to problems in the case of manufacturing the rear casing from a material based on a synthetic resin, and can also be manufactured at low cost.

A reinforcing belt-like ring member is woundly fitted on the outer periphery of a cylindrical barrel part of an inner casing member constituting a rear casing. The belt-like ring member has a width smaller than the length of the barrel part. A casing cover member is fitted on the belt-like ring member in the above fitted state. Alternatively, it is possible to fit the belt-like ring member on the outer periphery of a barrel part of the casing cover member. These parts can be disassembled.

A medical device for treatment of a stenosed body lumen includes an open-ended cylindrical body movable between a collapsed position and a radially expanded position pressed against the wall of the lumen is carried on a distal end of a catheter for insertion of the device into the lumen and placement at the stenosed site. In one embodiment the body sidewall is an open lattice-like structure, and a cover is attached to its outer surface. In another embodiment, concentric laminated tubes of dissimilar materials, such as, e.g., copper and silver, form the body. In a further embodiment stacked rings of different materials form the body. In a still further embodiment the device is temporarily placed in a body lumen for treatment of a stenosed site, after which the device is withdrawn. In all forms the body may have an outwardly flared inlet end to reduce turbulence.

The invention discloses a preparing method for a porous metal matrix compound brazing filler metal alloy soldering head. The method adopts porous metal matrix compound brazing filler metal alloy filled up with brazing filler metal alloy, a compound brazing filler metal layer is prefabricated between hard base metal, then the brazing filler metal alloy filled into the porous metal layer is heated to melt, and a tool head of an ultrasonic vibrating device acts on the surface of the base metal and exerts certain-pressure certain-time ultrasonic vibration on the surface of the base metal to finish a brazing process. When the method is used for preparing the brazing soldering head, the porous metal with high melting point can have a supporting function to a soldering seam layer in a brazing soldering process, the liquid-phase brazing filler metal alloy is prevented from being extruded out excessively in the ultrasonic vibration action. Thus, the preparation of the brazing soldering head with a large fuse face is achieved. In addition, the porous metal layer in the brazing seam layer can reduce the thermal expansion coefficients of the brazing seam layer, and the strength of the brazing seam layer and the strength of the connection interface between the brazing seam layer and the base metal are improved.

The invention relates to the field of refrigerators and discloses a door hinge wire harness restraining structure and a refrigerator. The door hinge wire harness restraining structure comprises an upper hinge plate and an upper hinge shaft which are fixedly connected together and further comprises a wiring box installed on the upper surface of the upper hinge plate. At least part of the interior of the wiring box forms a containing space for containing wire harnesses. The wiring box and the upper hinge plate are located and installed in a clamped mode. According to the structure, the wire harnesses are supported and restrained through the upper hinge plate and the wiring box, the upper hinge plate and the wiring box are separately arranged, and compared with a mode that the upper hinge plate and the wiring box are integrated in the prior art, the wire harness fixing effect is better, the wire harness assembly process is simpler, and the use effect is better.

The invention provides a deburring device for wood board processing. The deburring device includes a workbench, a feeding flat board, two deburring frames, a moving transverse-grinding roller, a moving vertical-grinding roller, a fixed vertical-grinding roller and a fixed transverse-grinding roller, the feeding flat board is slidably arranged at the upper portion of the workbench, a rack is fixedly connected with the bottom of the feeding flat board, two L-shaped supporting boards are fixedly connected with the upper portion of the feeding flat board, and an elastic splint is rotatably connected with the inner side of each L-shaped supporting board; and a return stopping strip is fixedly connected with the surface of each elastic splint, the two deburring frames are movably arranged at oneend of the workbench, the moving vertical-grinding roller is slidably connected with the upper end of a rotating shaft, the moving transverse-grinding roller meshes with outer periphery of a cone gear, a fixed vertical-grinding roller is fixedly connected with the outer periphery of the lower end of the rotating shaft, and the fixed transverse-grinding roller meshes with the bottom of the fixed vertical-grinding roller. According to the deburring device, the feeding flat board is matched with the deburring frames, the wood board can be fixed on the feeding flat board through the elastic splints and the L-shaped supporting boards, so that the side end surface of the wood board can be scraped and polished in a reciprocating mode, and the deburring effect is improved.

The invention relates to a gas nozzle (2) and a welding torch (1) equipped with said gas nozzle (2), a nozzle assembly (3) and a conductive tube (4), said gas nozzle (2), nozzle The component ( 3 ) and the conductive tube ( 4 ) have an artificially produced patina ( 8 ) on at least a partial area of ​​their surface for the purpose of reducing the adhesion of welding spatter. The invention also relates to a cleaning device for a welding torch (1) having a brush with bristles. These bristles are made of a very soft elastic material, preferably plastic, and abrasive particles are embedded in said bristles.

The application provides a model separation device for a 3D printer, wherein the 3D printer is capable of printing a solid-state model. The model separation device comprises a fixed bearing plate used for bearing the model and provided with a plurality of through holes, and a movable extrusion plate arranged in parallel relative to the bearing plate, wherein a plurality of extrusion components are arranged between the plate body of the extrusion plate and the bearing plate, and the extrusion plate and the extrusion components are configured as follows: the extrusion components are capable of gradually stretching out from the through holes with the movement of the plate body of the extrusion plate towards a direction approaching to the bearing plate. According to the model separation device for the 3D printer provided by the application, the purpose of rapidly, safely and accurately separating the printing model is achieved by virtue of the principle of generating an axial force by thread rotation by reasonably designing structures among the various components. Meanwhile, the working efficiency is increased, and the integrity and beauty of the printing model are ensured.

The invention discloses an assembled half-exposed framework high-pressure seal ring, which not only can seal in a rotating way, but also can seal in a reciprocating way. The seal ring includes a rubber body with a sealing lip, a metal framework vulcanized in the rubber, and a half-exposed framework, a pressure bearing ring taking a metal or non-metal composite material and a spring that are assembled on the rubber body. The half-exposed framework, the composite material pressure bearing ring and the rubber body of the seal ring are designed in an assembling way; and the composite material pressure bearing ring is arranged between the half-exposed framework and the sealing lip, and the pressure bearing ring bears a large amount of working pressure. The assembled half-exposed framework high-pressure seal ring has extremely high high-pressure resistance, outstanding and stable extrusion resistance, excellent heat dissipation and friction lubricating property, good eccentricity adaptability, extremely long service life, simple process, and efficient and stable machining.

The invention relates to a printing head for a three-dimensional printer. The printing head comprises a heating block, a throat tube fixedly connected with the heating block and a spraying nozzle, and further comprises a Teflon pipe located in the throat tube in the mode of being coaxial with the throat tube. The section, near a spraying opening, of a melting pipe of the spraying nozzle is a hole expanding outwards. The printing head can effectively prevent extruded fuse wires from adhering and agglomerating to the periphery of the spraying opening, improve printing accuracy and guarantee the forming effect of a three-dimensional object. The invention further provides the three-dimensional printer including the printing head.

The invention discloses a pressureless sintering-pressurized densifying preparation method for a titanium-aluminum-carbon (Ti3AlC2) particle enhanced zinc-aluminum matrix composite. The method comprises two steps of sintering and densifying. The method comprises the following steps: sintering mixed powders of titanium aluminum carbon and zinc-aluminum alloy at a relatively high temperature; conducting pressurized densifying at a relatively low temperature. Sintering at the relatively high temperature can obviously improve the interface bonding force between the titanium aluminum carbon enhanced phase and the zinc-aluminum alloy matrix, and pressurized densifying at the relatively low temperature can prevent zinc-aluminum alloy liquids from being extruded out because of pressurization; the titanium-aluminum-carbon particle enhanced zinc-aluminum matrix composite is uniform and compact in organization, less in defects and close in combination between the matrix and the enhanced phase, and has good physical properties and mechanical properties.

The invention offers thin wall metal pipe fitting fast locking type bonded structure. It includes pipe fitting joint, pipe body, seal ring, external pressure screw cap and roof pressure ring. The pipe fitting joint is set pipe body inner shoulder-hole, convex annular and roof pressure ring inner shoulder hole. Its end out side is set screw thread external tapping. Pipe body cover is set in the pipe fitting joint. It has the advantages of high compressive strength, good seal performance, and low cost. And it can be mainly used in water supply, drinking water or conveyance of fluids industries.

The invention relates to a part temperature control device for grinding processing. In a grinding quench hardening processing course, the change of the surface temperature of a part directly affects the quality of a heat-treated layer on the surface of the part. A high-temperature heat pipe is a good device for controlling heat transfer; in order to keep the temperature change of the part in the grinding quench hardening processing course low, the high-temperature heat pipe comes into contact with a part to be ground; the surface temperature of the part is detected in real time during grinding processing by means of an infrared radiation thermodetector; the contact area of the high-temperature heat pipe with a connection block and a thermal conductive adhesive is adjusted by driving a transmission structure unit using a PID (Proportion Integration Differentiation) controller, so that thermal contact resistance is reduced to transfer excessive heat outwards; therefore, the surface temperature of the part is adjusted, the requirement of controlling surface quenching is met, and technical support and foundation are provided for realizing automatic control of grinding process; and theapplication of the device may produce excellent economic and social benefits.

The invention relates to the technical filed of fixture decoration processing and manufacturing, in particular to production equipment for household furnishings. The production equipment comprises a processing table with two sides symmetrically provided with fixing plates, the middle portions of the fixing plates are connected in a hinged mode to the side walls of the processing table, and a displacement limiting bar is arranged between the fixing plates. Each fixing plate is provided with a first wedge block, a wedge rod is arranged at one side of each fixing plate, each wedge rod is providedwith a clamping surface, and the first wedge blocks cooperate with the wedge rods intermittently. The wedge rods are connected in a hinged mode to the processing table, reset springs are arranged between the wedge rods and the processing table, and the wedge rods are provided with second wedge blocks. A pushing plate is coaxially and rotationally connected to each fixing plate, one end of each pushing plate is connected to the corresponding fixing plate by a telescopic rod, and an incline plane is arranged at the other end of each pushing plate to be intermittently matched with the corresponding second wedge block. Supporting columns are arranged at two sides of the processing table, the supporting columns are rotationally connected with threaded rods, the threaded rods are connected to sliding sleeves by threads, and the opposite sides of the sliding sleeves are provided with perforating knifes. The production equipment for the household furnishings solves the problem that an existing perforating machine is unable to perforate both sides of a workpiece at the same time.

The invention relates to a technology for preparing bean curd /uncongealed bean curd by virtue of a household bean curd machine. The technology comprises the following steps: (a) in a crushing stage, adding water and materials to a crushing cup, wherein the motor drives a crushing tool to rotate and crush the materials into slurry, and the crushed slurry is filtered through a filter and then is discharged into a slurry boiling cup; (2) in a slurry boiling stage, heating the slurry in the slurry boiling cup by virtue of a heating element until the slurry is cooked, and cooling the slurry to a certain temperature; (c) in a marinating and solidifying stage, discharging the a marinating agent in a marinating box into the slurry boiling cup, marinating and then standing for a certain period of time; and (d) in a pressing stage, driving a pressure plate to advance along the inner wall of the slurry boiling cup by a drive mechanism, infiltrating yellow serofluid into the position above the pressure plate through a drainage groove and/hole in the pressure plate, and forming the bean curd below the pressure plate. Therefore, water sealing is achieved above the bean curd to be isolated from air; the bean curd is prevented from being polluted by bacteria; the storage time of the bean curd is relatively long; and meanwhile, the yellow serofluid can also play a role in natural heat preservation.

The invention discloses an extrusion preparation method for extra-large-orifice PTFE pipe fitting paste. The extrusion preparation method comprises the following steps of: mixing raw materials; pre-forming the raw materials; extruding and forming the raw materials; tracing extrusion speed and a position of an extruded pipe fitting, controlling an extruder through a feedback signal; sintering and forming; performing position measuring and feedback control on the position of a sintered extra-large-orifice PTFE pipe fitting product; and enabling polytetrafluoroethylene dispersion resin tube to form a product. The invention further discloses extrusion equipment for extra-large-orifice PTFE pipe fitting paste. The extrusion equipment comprises an extrusion drive part, a pushing-pressing assembly, a mandrel assembly, a raw material barrel, an extrusion mould and a thermal forming assembly which are sequentially connected coaxially, wherein the extrusion drive part is mounted on the tail part of the rack; one end of the pushing-pressing assembly is connected with the extrusion drive part; the other end of the pushing-pressing assembly is connected with one end of the mandrel assembly; the raw material barrel is mounted on the front part of the rack; the extrusion mould is mounted at an outlet end of the raw material barrel; the mandrel assembly passes through the center of the raw material barrel and the center of the extrusion mould; and the thermal forming assembly is supported in front of the rack and is concentric with the raw material barrel.