907 results about "Molten material" patented technology

The embodiment of the invention relates to the field of radioactive waste treatment, in particular to material treatment equipment and curing equipment. According to the material treatment equipment provided by the embodiment of the invention, the powdery material in the material accommodating device is converted into a partially molten state through the material treatment device, and the partially molten material is converted into the solid material through the pressurizing device, so that the powdery material can undergo conversion of different states in the material accommodating device; therefore, powdery materials are converted into solid materials convenient to transfer and process, the operation of replacing a container is omitted, and material processing procedures are saved. According to the curing equipment provided by the embodiment of the invention, the sealing device is used for sealing the material treatment equipment, so that the state transition process of the powdery material has better sealing performance and stability, and the stable quality of the produced solid material is ensured.

The utility model relates to the technical field of baby carriage tire injection molding processing, and discloses automatic injection molding equipment for processing baby carriage tires, which comprises a rack and a mold closing chamber, an injection bin is arranged on one side of the rack, the left end of the injection bin is connected with a feeding pipe, a feeding assembly is connected above the feeding pipe, and the left end of the feeding pipe is connected with a glue melting pipe. The left end of the glue melting pipe penetrates through the side wall of the mold closing chamber to be connected with an injection nozzle assembly, the injection nozzle assembly comprises an injection nozzle body and a dredging rod, the dredging rod is slidably sleeved with the injection nozzle body, the side wall of the injection nozzle body communicates with a storage barrel, and external threads are arranged on the outer wall of the right end of the horizontal part of the storage barrel; according to the utility model, after one-time injection molding action is completed, molten materials can be blocked and prevented from being drawn, meanwhile, the pressure in the mold can be maintained, the injection molding quality is effectively improved, meanwhile, the possible blockage of the injection nozzle body can be conveniently and quickly dredged, the downtime is reduced, and the production efficiency is improved.

The embodiment of the invention relates to the field of radioactive waste treatment, in particular to a solidification method. According to the method, a conveying and jacking device is used for conveying a material containing device to enable the material containing device to receive powdery materials, a clamping and transferring device and a lifting device are used for conveying the material containing device completing feeding into a material processing device to enable the powdery materials to be partially molten, and a pressurizing device is used for pressing and compacting the partially molten materials; and finally, ingot-shaped solid materials are formed in the material containing device, then the lifting device and the clamping and transferring device are utilized again to transfer the material containing device to the conveying and jacking device so as to transfer the ingot-shaped solid materials, in this way, the process from powder feeding to ingot forming of the materials is conducted in the material containing device, the situation that a material container is replaced in the midway is avoided, and the production efficiency is improved. Operation steps are simplified; and the clamping and transferring device, the lifting device and the conveying and jacking device all participate in the front process and the rear process of material treatment, so that reuse of equipment parts is achieved, and the equipment composition is simplified.

The invention relates to a preparation method of a silicon single crystal rod and a silicon wafer. Comprising a melting stage, a temperature adjusting stage, a welding stage, a seeding stage, a shouldering stage, an equal-diameter stage, an ending stage and a breaking stage which are carried out in sequence, in the equal-diameter stage, the pulling speed is controlled to be within a first pulling speed range, and the solid-liquid interface temperature gradient is controlled to be within a first gradient range; wherein the range of the first pulling speed ranges from 0.5 mm / min to 1.1 mm / min; the first gradient range is 3 DEG C / cm to 5 DEG C / cm. By reducing the temperature gradient of a solid-liquid interface and lowering the crystal pulling rate, the stability of a thermal field is enhanced, and sufficient conditions are provided for the composite reaction of Sii and V, so that the impurity capturing efficiency is improved, the internal purity of the crystal is improved, and the impurities are effectively removed.

The invention discloses an injection molding device with an auxiliary mold micro-opening and glue sealing structure, and the device realizes accurate micro-opening of a movable mold plate through the synergistic effect of a mold opening and closing assembly and an auxiliary mold opening assembly, so that the micro-opening distance of the movable mold plate can be kept in a controllable range of 0.5 mm-2mm. Therefore, the uniformity of mold cavity exhaust and material flow distribution in the injection molding foaming process is effectively improved; in addition, the structure of the injection screw is optimized, and a spiral dispersing element area and a pin mixing area are sequentially arranged at the head of the injection screw, so that the gas-containing molten material can be efficiently dispersed and homogenized, and the micropore structure and the surface quality of the interior of a product are remarkably improved. Compared with the prior art, the consistency and the size precision of the product can be remarkably improved, the defective rate is reduced, and the mechanical property and the appearance quality of the foamed plastic product are improved.

The invention relates to the technical field of cable manufacturing, in particular to cable insulation sheath extrusion molding equipment which comprises an extrusion device, and the extrusion device comprises an extrusion head and a rotating assembly. The plurality of convex surfaces are uniformly arranged on the outer wall of the extrusion head along the circumferential direction, so that the radial distribution of the molten material in the flow channel is adjusted, and the molten material is guided to supplement gaps among strands of the multi-strand stranded cable. Meanwhile, the extrusion head is driven by the rotating assembly to rotate, so that the convex surface can adapt to the outline of the outer surface of the cable in real time. Therefore, it is ensured that the thickness of the insulating layer is uniform, the surface of the insulating layer is smooth, the phenomenon that materials are excessively gathered towards gaps or are not evenly distributed is avoided, the electrical hidden danger of an over-thin area is eliminated, material waste of an over-thick area is reduced, and the insulating performance and the material utilization rate of the cable are improved.

The invention discloses a shaping mold facilitating rapid demolding of a plastic product, and relates to the field of injection molds, the shaping mold comprises a top mold, and the shaping mold has the advantages that a spray head can be hidden in the mold, the integrity of a mold cavity is prevented from being influenced, the injection molding quality is guaranteed, spraying of a demolding agent and injection molding of a plastic part are not interfered, and the injection molding efficiency is improved. Meanwhile, the shaping mold can automatically spray a release agent, manual participation in injection molding of all plastic parts is not needed, a mechanical arm is not needed, the cost is reduced, time and labor are saved, meanwhile, the injection molding efficiency is fully improved, control programming and use of a position sensor do not need to be considered, the injection molding process is fully simplified, and the risk of device damage is reduced; the later maintenance cost is relatively low, and the detection of mold closing is closely linked with the spraying of the release agent, so that the application of the release agent and the detection of mold closing do not need to be carried out at intervals, the splashing of molten materials is avoided, the safety is improved, the injection molding period is greatly shortened, and the production efficiency is improved.

A device that may be a valve or a pinch valve is disclosed. The device includes at least the following components: (1) a flexible sleeve and (2) two end connection ports that are located on opposite ends of the flexible sleeve. The device may also include one or more of the following: an actuator, a body or housing, and a heating element. The flexible sleeve is capable of having the high-temperature material flowed therein and being in direct contact with the flexible sleeve. The high-temperature material is a material at a temperature above 200° C. For example, the high-temperature material may be a molten material in a casting process. A method of using the device is also disclosed. The method involves, at least, the following steps: (1) providing a flexible sleeve, and (2) flowing a high-temperature material into the flexible sleeve. The steps may be part of a casting process involving molten material, such as molten metal or molten metal alloy. The flexible sleeve may be provided as part of a device, such as a valve or pinch valve.

The invention relates to a lead-bismuth reactor damaged core melt migration experiment system and method, and the system comprises an experiment section, a simulation fuel rod, a shielding gas module, a direct current power supply heating module, a shooting recording module and an instrument module, a direct-current power supply is used for heating an electric heating wire simulation core block to serve as an internal heat source to generate heat to melt a fuel rod, air in a system is exhausted by filling argon, and inert environment protection is provided; the melting of lead and bismuth is realized by the heating of the heating wire; and the specific behaviors of gathering and migration of the melt above the lead-bismuth liquid level can be observed through the visible window on the top cover. The simulated fuel pellet is made of metal molybdenum, the simulated fuel rod cladding is made of stainless steel, and liquid lead bismuth serves as a cooling agent. Meanwhile, a multi-layer structure is designed for the experimental section, and stainless steel serving as a shell is prevented from being melted along with melting of the stainless steel cladding of the fuel rod. According to the invention, simulation experiments of melting of a single fuel rod and a fuel rod bundle, pellet fragmentation and melt migration can be carried out, and a reference is provided for safety design of a lead-bismuth reactor.

The invention discloses test equipment and a test method for interaction of a melt and a nuclear power special material. The test equipment comprises a smelting chamber, a smelting container assembly, an electromagnetic and shielding control system, a gas control system, a temperature measurement system and a remote operation system, the smelting container assembly is located in the smelting chamber, the smelting container assembly is used for containing test materials including melts and nuclear power special materials, and at least part of the electromagnetic and shielding control system is located in the smelting chamber and wraps the outer side of the smelting container assembly so as to conduct electromagnetic induction heating on the melts; nuclear power special materials are shielded from electromagnetic interference; the gas control system is used for providing a gas environment for the interior of the smelting container assembly and extracting gas for filtering, discharging, collecting or analyzing, the temperature measuring system is used for measuring the temperature in the molten pool and the temperature of the nuclear power special material, and the remote operation system is used for remotely controlling the test equipment to complete test operation.

The exhaust device comprises a base and a top plate, a lower mold is fixedly arranged on the upper portion of the base, a forming groove is formed in the upper portion of the lower mold, and hydraulic air cylinders are fixedly connected to the left side and the right side of the bottom of the top plate correspondingly; the telescopic ends of the hydraulic air cylinders are fixedly connected with upper molds and forming blocks, the left side and the right side of the interior of each forming block are each provided with an installation space, and exhaust units are arranged in the installation spaces. Gas in the forming space is exhausted through the exhaust unit, when the gas is pressed and accumulated due to melt filling in the injection molding process, the miniature air cylinder drives the plug block to open the gas inlet pipeline, the gas is exhausted through the exhaust pipeline, and the defects of bubbles, shrinkage cavities, surface weld marks and the like caused by untimely exhaust in the traditional process can be effectively eliminated; and in addition, manual intervention is not needed through automatic exhaust, and the single-time production period is shortened.

The invention relates to the technical field of polyester powder coatings, in particular to a preparation method of a polyester type antistatic powder coating. The method comprises the following steps: firstly, determining a flow inertia factor according to the viscosity of a pre-molten material and the heating condition among different sections; determining a thermal inertia factor according to the heat-conducting property of the pre-molten material, the influence of heated melting of the feeding particle size of the feeding in the melting section and the expected arrival time of the pre-molten material; matching the flow inertia factor sequence and the thermal inertia factor sequence to obtain a delay time difference; determining a state change factor of the pre-molten material according to the delay time difference, the viscosity of the pre-molten material and the propelling speed; according to the heat conduction performance and the state change factor of the pre-melted material, total energy fluctuation of the material in the time sequence due to unstable heat absorption is determined; and the optimal feeding speed is determined according to the change of the total energy fluctuation in the material propelling length. The material agglomeration probability can be reduced through the regulation and control strategy.

The invention relates to the technical field of laser cutting machines, and discloses a low-pressure oxygen cabin body laser cutting machine which comprises a multi-degree-of-freedom platform and a welding frame connected with the multi-degree-of-freedom platform and further comprises a calibration plate, a vertical moving frame, a horizontal moving frame and a main shaft rotationally connected to the welding frame. The output shaft end of the servo motor is in transmission connection with the main shaft through a synchronous belt, a vertical transmission module for driving the vertical moving frame to move up and down in a reciprocating mode is installed on the welding frame, a horizontal transmission module for driving the horizontal moving frame to move left and right in a reciprocating mode is installed between the horizontal moving frame and the vertical moving frame, and the reciprocating displacement strokes of the horizontal moving frame and the vertical moving frame are adjustable. Through a bidirectional adjustable reciprocating vibration mechanism of the vertical moving frame and the horizontal moving frame and in combination with a dynamic stroke adjusting function, high-frequency micro-amplitude vibration is generated when a laser beam acts on a material, so that the molten material is efficiently discharged, the smoothness of a cutting surface is improved by more than 40%, and the slag adhering rate is reduced to be less than 15% of that of traditional equipment.

The invention relates to the technical field of laser cutting machines, in particular to a steel strip sheet laser cutting machine which comprises a base plate, a workbench and a laser transmitter and further comprises a supporting plate, a U-shaped frame, a vacuum pump, a first vacuum assembly, a second vacuum assembly and a blowing assembly. The U-shaped frame is arranged on one side of the workbench, the laser transmitter is arranged above the supporting plate and connected with the U-shaped frame, the vacuum pump is fixedly arranged on the U-shaped frame, and the first vacuum assembly, the second vacuum assembly and the purging assembly are connected through the vacuum pump and all arranged on the U-shaped frame. The input end of the first vacuum assembly and the output end of the laser transmitter are coaxially arranged. Through the arrangement of the vacuum pump, the first vacuum assembly, the second vacuum assembly and the purging assembly, the cutting quality is guaranteed on the basis that melt is prevented from being solidified again on the edge of the bottom of a cutting hole.

The utility model belongs to the technical field of molds, and particularly relates to an injection mold for a plastic storage box. The storage box forming die comprises a storage box forming lower die and a storage box forming upper die. In the injection molding process, molten materials enter the cavity after being subjected to injection molding and shunting through the injection molding and shunting piece, the retraction type inclined stripping assembly is tightly attached to and matched with the outer side sliding block piece to be used for forming handle empty grooves in the two sides of the containing box, secondary machining is not needed, mold opening is conducted after injection molding is completed, and the mold opening efficiency is greatly improved. At the moment, the retraction type inclined stripping assembly retracts towards the protruding side of the forming middle section, the outer side sliding block piece moves outwards, the retraction type inclined stripping assembly and the outer side sliding block piece are separated from handle empty grooves formed in the two sides of the containing box, then the splicing type lengthened section forming boss is driven by the ejection connecting piece to move upwards, and the formed plastic part is ejected and demolded; according to the structure, on one hand, handle empty grooves formed in the two sides of the storage box cannot be damaged, on the other hand, the fluency of ejection demolding is high, and the structure is compact and reasonable.

The present disclosure provides a high-pressure and multi-atmosphere assisted SLM gradient material preparation method and an aluminum-lithium alloy coating. The high-pressure and multi-atmosphere assisted SLM gradient material preparation method includes the following steps: injecting a first gas mixture into a working box, and enabling, by laser irradiation, molten materials in a micro-melt pool to react with a carbon-containing gas to form a carbide-doped first gradient aluminum-lithium alloy coating; injecting a second gas mixture into the working box, and enabling, by laser irradiation, molten materials in a micro-melt pool to react with a carbon and nitrogen-containing gas to form a carbide and nitride-doped second gradient aluminum-lithium alloy coating; and injecting a third gas mixture into the working box, and enabling, by laser irradiation, molten materials in a micro-melt pool to react with a nitrogen-containing gas to form a nitride-doped third gradient aluminum-lithium alloy coating. The present disclosure improves the surface forming quality of an aluminum-lithium alloy material, and the material is hard outside and tough inside.

The utility model discloses an extrusion die orifice structure of a flame-retardant master batch granulator. The extrusion die orifice structure comprises an extrusion die holder, a diversion cone, a push-pull net changing mechanism, a protective cover and a pelletizing mechanism, a runner cavity is formed in the extrusion die base, a plurality of extrusion holes communicated with the runner cavity are formed in the side wall of the extrusion die base in the circumferential direction, the flow dividing cone is arranged in the runner cavity, the pelletizing mechanism is used for pelletizing and forming strip-shaped molten materials flowing out of the extrusion holes, and the push-pull net changing mechanism is arranged at the end, away from the extrusion holes, of the extrusion die base. According to the utility model, the sprue spreader is arranged in the extrusion die holder and can guide molten materials to uniformly and quickly flow to the extrusion hole, so that the extrusion efficiency of the molten materials is effectively improved; according to the push-pull screen changing mechanism, automatic switching of the filter screen plates can be achieved through cooperation of the movable sliding plate and the push-pull air cylinder, the filtering continuity of molten materials is guaranteed, switching of the filter screen plates can be completed without shutdown, and the production efficiency of flame-retardant master batches is greatly improved.

A method and system for forming material within a gap on a surface of a substrate using metal material are disclosed. An exemplary method includes forming a layer of meltable material overlying the substrate and heating the meltable material to a flow temperature to form molten material that flows within the gap.

The present invention relates to the technical field of metal production or refining, and provides a non-ferrous metal smelting slag recovery and treatment system and method, the method comprising: performing reduction activation treatment on the molten slag, cutting the slag flow by a guide plate and combining mechanical vibration to strengthen the reduction reaction; using ultrasound and gradient magnetic fields to collaboratively sort metal particles; forming a vortex flow field by a rotating spray gun to achieve directional alloy precipitation, and continuously discharging the alloy melt; converting the tailings into glassy building aggregates; recovering the waste heat and quenching the flue gas, using a high-temperature resistant filter bag to capture zinc-containing dust, and then removing sulfides and heavy metals through a graded absorption process. The system comprises an activation reactor, a sorting tower, a precipitation furnace, and a flue gas treatment unit, and each device realizes the collaborative treatment of molten materials through a sealed conveying structure. The present invention realizes the efficient dissociation and recovery of valuable metals, the full-quantity resource utilization of tailings, and the control of the depth of flue gas pollution, significantly improving the resource circulation efficiency and environmental friendliness.

The invention relates to a method for producing mayenite, comprising the following sequential steps: a) preparing a feed suitable for obtaining, at the end of step c), a product comprising more than 90% mayenite in percentage by weight based on the weight of the crystalline phase, said mayenite comprising calcium and / or strontium, aluminum and oxygen; b) melting the feedstock until a molten material is obtained; c) cooling the molten material in order to solidify the molten material and obtain a polycrystalline fused product; the melting is carried out using an electric arc furnace and in a reducing medium.

The utility model belongs to the technical field of molds, and relates to a full-automatic demolding mechanism for a porous conical plastic bobbin. The injection mold comprises an upper injection mold and a lower injection mold, and a positioning and fixing mold plate and a lifting plate are arranged between the upper injection mold and the lower injection mold. During injection molding, molten materials are injected into the multiple cavities through the injection molding flow dividing piece, after injection molding is completed, mold opening is carried out, the positioning and fixing mold plate is separated from the lifting plate, and therefore the sliding type shrinkage type demolding forming assembly and the conical plastic bobbin forming inner barrel are far away from each other, and in the upward moving process of the sliding type shrinkage type demolding forming assembly, the conical plastic bobbin forming inner barrel is separated from the conical plastic bobbin forming inner barrel. The inside of the sliding type contraction type demolding forming assembly is unfolded, a formed plastic part is separated from the sliding type contraction type demolding forming assembly, manual demolding is not needed, full-automatic demolding can be completed after mold opening, the automation degree is high, and the labor intensity of workers is greatly reduced.

The invention relates to the technical field of extruders, and provides a wire and cable processing extruder which comprises a rack. The charging barrel is arranged on the rack and is provided with a feeding hole and a discharging hole, and the charging barrel is provided with a heating section; the screw rod is rotationally arranged in the charging barrel; the extrusion cylinder eccentrically sleeves the screw rod and is positioned in the heating section, and an extrusion space is formed between the outer wall of the extrusion cylinder and the inner wall of the charging barrel; the extrusion convex ring is arranged on the inner wall of the charging barrel and is positioned in the extrusion space; and a discharging gap for molten materials to pass through is formed between the extrusion convex ring and the extrusion cylinder, and when the extrusion cylinder rotates eccentrically, the extrusion convex ring can be matched with the extrusion cylinder to grind unmolten particle materials. By means of the technical scheme, the technical problems that in an extruder in the prior art, due to the fact that materials cannot make full contact with the heating section, the material melting efficiency is low, part of the materials cannot be completely melted possibly, and the cable product coating quality is affected are solved.

The application relates to the technical field of laser cutting, and discloses a micro-nanoparticle impact strengthening auxiliary heavy piece laser cutting method and device, which comprises the following steps: step one: placing a workpiece to be cut in a specified cutting station; step two: simultaneously outputting micro-nanoparticle gas-solid mixed gas and a laser beam, and the two jointly act on the workpiece to cut; and step three: spraying the micro-nanoparticle gas-solid mixed gas to the surface of the workpiece, and impacting the heat affected zone of the cutting area by the high-energy micro-nanoparticles, so that the molten slag is separated from the surface of the workpiece; the device comprises a control cabinet and a pump source electrically connected to one side of the control cabinet, and a spray head electrically connected to the control cabinet is installed on a cutting platform. The novel spray head is arranged, micro-nanoparticle gas-solid mixed gas and a laser beam are simultaneously outputted, the laser focal point is controlled to act on the surface of the workpiece to be machined during outputting, the surface of the workpiece to be machined is made to generate high temperature and gasify materials, and the molten material after gasification is thrown out.

The present invention provides a high-pressure multi-atmosphere assisted SLM gradient material preparation method, and an aluminum-lithium alloy coating. The method comprises the following steps: injecting a first mixed gas into a working chamber; by means of laser irradiation, causing a molten material in a micro-molten pool to react with a carbon-containing active gas, to form a first gradient aluminum-lithium alloy coating doped with carbides; injecting a second mixed gas into the working chamber; by means of laser irradiation, causing the molten material in the micro-molten pool to react with a carbon- and nitrogen-containing active gas, to form a second gradient aluminum-lithium alloy coating doped with carbonitrides; injecting a third mixed gas into the working chamber; by means of laser irradiation, causing the molten material in the micro-molten pool to react with a nitrogen-containing active gas, to form a third gradient aluminum-lithium alloy coating doped with nitrides. The present invention improves the surface forming quality of aluminum-lithium alloy materials, while achieving the overall material performance of being hard on the outside and tough on the inside.

The invention discloses a thin-wall acoustic part injection molding device based on a hot runner, and belongs to the technical field of injection molds. Comprising an injection mold, a fixed mold mechanism, a discharging mechanism and a runner assembly, linkage is formed between a hot runner system of the runner assembly and inclined structures of an injection mold, a fixed mold mechanism and a discharging mechanism, on-off injection molding heads achieve on-demand on-off of molten materials, cold material residues are avoided, a spherical structure in the middle of a flow guide pipe head optimizes a molten material flowing path, a driving part accurately controls a ball core valve head to rotate, it is ensured that on-off of the molten materials is switched in time, and the service life of the molten materials is prolonged. The melt entering the cavity is always in a proper temperature state; and meanwhile, the inclined structure assists the melt in flowing in the inclined direction under the action of gravity, the filling resistance of the tail end of the thin-wall cavity is greatly reduced, it is guaranteed that the melt is rapidly and evenly filled in the cavity, the part is guided to directionally slide down after demolding, follow-up collection is facilitated, and comprehensive optimization of the filling quality, the production efficiency and the energy consumption cost is achieved.

The invention relates to the technical field of metal plate laser cutting, in particular to a self-adaptive positioning metal plate laser cutting device which comprises an equipment machine table, a hollow bearing base plate erected on the table top of the equipment machine table and a laser cutting rack transversely installed. A carrying fence frame and a positioning rolling assembly capable of being turned over are integrated on the surface of the bearing base plate, the positioning rolling assembly is driven by a position adjusting assembly on the side edge of the bearing base plate to conduct turnover motion, and rapid positioning and clamping of a metal plate workpiece laid on the surface of the carrying fence frame are achieved. A cutting execution frame capable of sliding in the transverse direction of the laser cutting rack is installed on the laser cutting rack, and the cutting laser gun is installed at the bottom of the cutting execution frame. A melt receiving table is rigidly connected between the bottom ends of the supporting base frames, the melt receiving table is located in an inner cavity of the equipment machine table and accurately located under the cutting laser gun, accurate synchronous displacement of the melt receiving table and the cutting laser gun in the Y-axis direction can be achieved along with driving of the position adjusting assembly, and high integration of metal plate self-adaptive positioning and dynamic slag collection is achieved.

The invention relates to a laser-assisted enhanced fused deposition device and a forming method, and belongs to the field of additive manufacturing. According to the device, after molten materials are extruded by the spray head to form a deposition layer, the deposition layer is heated by using a laser beam, so that the deposition layer reaches a glass-transition temperature, and fusion of two adjacent layers is enhanced. The device comprises a laser generator, a controller, a clamp, a laser head, a nozzle mounting plate, a nozzle, a wire feeding mechanism and a movement mechanism. The sprayer comprises a heat dissipation mechanism, a heating structure and a nozzle. The laser head is connected with the nozzle through the clamp, and the movement mechanism drives the nozzle and the laser head to synchronously move along a preset path. According to the method, a deposition layer is heated through laser irradiation, so that the deposition layer and a previous deposited layer are subjected to secondary fusion, and through deposition-laser irradiation-deposition reciprocating circulation, the interlayer bonding strength is enhanced, and layer lines are reduced. The device solves the problem of poor interlayer bonding strength in the traditional FDM technology, and has the advantages of simple structure, high adaptability, wide application range and the like.

An additive manufacturing machine for depositing molten wire in successive layers on a printing support in a manufacturing chamber to manufacture a three-dimensional part, includes: a feed unit for a raw material, a processing unit arranged to change the state of the raw material into molten material, the processing unit being fixed, located outside the manufacturing chamber and including at least one screw extruder, a flexible heating tube designed to convey molten material at its processing temperature and viscosity from the fixed processing unit to a mobile deposition unit, a mobile deposition unit located in the manufacturing chamber and including at least one deposition nozzle designed to deposit the molten material in the form of a molten wire in successive layers on the printing support and along a predetermined trajectory until the part to be manufactured is obtained.

The invention discloses a sheath extruder for cable production, and belongs to the technical field of extruders, the sheath extruder comprises a foundation bottom plate, the foundation bottom plate is fixedly connected with an extruder head, one side of the extruder head is communicated with a guide shell, the top of the extruder head is communicated with a plasticized raw material feeding cylinder, and the top of the plasticized raw material feeding cylinder is communicated with a plasticized raw material discharging cylinder. And a spiral blade is rotationally connected into the plasticizing raw material feeding barrel. By arranging the adjusting mechanism, the centrifugal force borne by the sliding block in the control disc is controlled according to the movement speed of the cable core, so that the heating frequency of the arc-shaped electric heating plate is influenced, and then it is guaranteed that the heating frequency can be correspondingly changed according to the actual movement condition of the cable core; and meanwhile, the resistance influence of the corresponding slide rheostat can be directly fed back to the rotating speed of the spiral blade, so that the discharge rate of the molten material can be linearly controlled according to the movement speed of the cable core.

The invention relates to the field of injection molding equipment, in particular to sealing ring injection molding equipment which is characterized in that a plurality of I-shaped bases are mounted in a fixed mold, a plurality of column sleeves are symmetrically mounted on the upper portions of the I-shaped bases in a rectangular shape, inner pipes are arranged in the column sleeves, charging barrels are mounted at the upper ends of the interiors of the inner pipes, and injection molding openings are connected to the upper portions of the charging barrels; and a spiral blade is mounted at the bottom through a driving shaft and is driven by a driving motor to rotate. According to the device, after a molten material enters the I-shaped base, the cutting blade and the arc-shaped blade mechanism are driven to rotate, so that lumps and floccules in the molten material are preliminarily stirred, the multiple linkage stirring mechanisms at the injection molding opening can rotate along with rotation of the arc-shaped blade mechanism, and the multiple stirring effect is achieved so as to improve the state of the molten material; and meanwhile, the arc-shaped blade mechanism can adaptively match the rotating speed according to the state of the melt, so that the melt in different states is accurately treated and improved, the agglomeration phenomenon is effectively reduced, the state of the melt is improved, and the forming quality is ensured.