17results about How to "Increase extrusion speed" patented technology

The invention belongs to the technical field of sample collection, and particularly relates to a seabed sediment columnar sample collection device and method. The collecting device comprises a rectangular-ambulatory-plane-shaped bearing base, bearing frames are installed on the bearing base, the multiple bearing frames are jointly connected with a circular base disc located at the center position above the bearing base, a pressure relief sampling mechanism is arranged on the circular base disc, and a height difference exists between the circular base disc and the bearing base. The pressure relief sampling mechanism comprises a circular sampling tube, and an opening of the sampling tube faces the bearing base and is coaxial with the circle center of the circular basal disc; a sawtooth annular disc with the same shape and size as the sampling tube is also mounted at the opening of the sampling tube. According to the invention, the unsmooth sample removal caused by large friction force between the inner wall of the sampling tube and a sample can be avoided through the removal-assisting molding device, so that the sample can be removed smoothly and completely, the sample removal difficulty of the sample is reduced, and the use effect of the device is improved.

The invention relates to the technical field of extruders, and provides an anti-solidification double-screw extruder for cable material production, which comprises a shell and a feeding hopper, and screw rods are movably installed in the shell side by side, a feeding hopper is fixedly installed on one side of the top end of the shell, a stirring mechanism is movably arranged in the feeding hopper, and the stirring mechanism comprises a second belt pulley mechanism, a connecting shaft, a stirring shaft, a first right-angle gear, a second right-angle gear and a groove. By arranging a stirring mechanism, when a screw rotates for processing, a second belt pulley mechanism is matched with a right-angle gear, so that a stirring shaft rotates, a stirring plate is driven to stir and mix cable raw materials, grinding wheels on the two sides rotate and grind in a groove, and the cable raw materials are ground; therefore, in the subsequent processing and extruding process of the double-screw extruder for cable material production, raw materials are uniformly distributed, the fusion efficiency and the extrusion speed are increased, the extrusion difficulty is reduced, and faults such as screw locking are avoided.

The invention relates to the field of metal materials, and provides a high-speed extrusion low-alloying high-toughness magnesium alloy and a preparation method thereof. The alloy is prepared from the following components in percentage by mass: 0.7 to 1.2 percent of manganese, 0.2 to 0.8 percent of aluminum, 0.4 to 1.2 percent of zinc, 0 to 0.25 percent of additive elements, less than or equal to 0.05 percent of inevitable impurities and the balance of magnesium, the additive element is one or any combination of silver or rare earth, the content of the silver is 0-0.25%, the content of the rare earth is one or combination of cerium or scandium, the content of the cerium is 0-0.25%, the content of the scandium is 0-0.25%, and the total content of alloying elements in the alloy system is less than 3.5%. The preparation method comprises the steps of smelting, gravity casting and high-speed extrusion. The low-cost multi-element microalloyed magnesium alloy is prepared, meanwhile, high-speed extrusion forming of the alloy material is achieved, and long-time heat treatment is not needed before extrusion machining. Wherein the extrusion speed reaches 12-60 m / min, the elongation of the magnesium alloy profile is larger than or equal to 18%, the ratio of the yield strength to the total element content is larger than or equal to 132 MPa / wt.%, and compared with the prior art, the performance is remarkably improved.

The invention relates to the technical field of extruder equipment, and discloses a medical polymer material processing extrusion device which comprises a main body, the top of the main body is fixedly connected with a feeding port, the back of the main body is fixedly connected with a motor, and the output end of the motor penetrates through the inner wall of the main body and extends into the main body. The extending end of the output end of the motor is fixedly connected with a screw rod, and the side, away from the motor, of the body is in bolted connection with a working box. When the connecting shaft rotates, materials accumulated in the inner cylinder can be stirred, the outer portions and the inner portions of the materials are mixed, the situation that when the materials are accumulated in the inner cylinder, the contact time of the outer surfaces of the materials and the inner wall of the device is long is avoided, and local high temperature generated by long-time staying of the materials at a mold outlet can be reduced; therefore, the color change and yellowing conditions of the material are reduced, and the molding quality after extrusion is improved.

The invention relates to a circulating screw extruder. Comprising a transversely-arranged cylindrical barrel, a feeding pipe vertically inserted into the upper side of the left end of the cylindrical barrel and communicated with the interior of the cylindrical barrel, a discharging pipe vertically inserted into the lower side of the right end of the cylindrical barrel and communicated with the interior of the cylindrical barrel, and a feeding valve arranged between the root of the feeding pipe and the cylindrical barrel. The discharging valve is arranged between the root of the discharging pipe and the cylindrical barrel, and the end cover is detachably fixed to an opening in the right end of the cylindrical barrel; the device further comprises a circulating extrusion assembly. The circulating extrusion assembly comprises an outer circulating screw rod, an inner circulating screw rod and a driving mechanism; according to the invention, the material mixing uniformity is greatly improved, the operation is greatly simplified, and the effects of saving time and labor are achieved; in addition, the extrusion speed of the materials is effectively increased.

The utility model relates to the technical field of lithium battery positive electrode materials, and discloses a crushing device, which comprises a crushing assembly, a crushing assembly, a crushing assembly and a crushing assembly, and the crushing assembly is provided with a channel for materials to pass through; the discharging assembly is arranged above the crushing assembly, and the discharging assembly is suitable for storing materials and allowing the materials to pass through; and the at least two extrusion assemblies are movably arranged above the discharging assembly, and the at least two extrusion assemblies are suitable for moving in opposite directions so as to extrude materials stored on the discharging assembly. The at least two extrusion assemblies are arranged above the discharging assembly and move oppositely at the same time to extrude materials, so that the moving distance of each extrusion assembly is shortened, the extrusion speed is increased within the same time, and the production efficiency is improved; and secondly, the materials are extruded before being crushed, so that the size of the materials can be reduced, material blockage caused by overlarge size of the materials during crushing is avoided, and the service life of the crushing device is prolonged.

The utility model relates to an extruder capable of preventing vacuum overflow. The extruder comprises an extrusion assembly, an anti-overflow assembly, a vacuumizing assembly and a solid accommodating chamber, the extruding assembly comprises an extruding machine barrel and an extruding screw rod, and the extruding screw rod movably penetrates through the extruding machine barrel; the anti-overflow assembly comprises an anti-overflow machine barrel and an anti-overflow screw rod, the anti-overflow machine barrel is communicated with the extruder barrel, the anti-overflow screw rod movably penetrates through the anti-overflow machine barrel to be inserted into the extruder barrel, and the anti-overflow screw rod comprises a left-handed first thread element, a right-handed second thread element and a left-handed third thread element; the first thread element, the second thread element and the third thread element are sequentially arranged in the direction away from the extruder barrel, the relationship between the thread pitch p1 of the first thread element and the thread pitch p2 of the second thread element is as follows: 1.5 p1 < = p2 < = 3p1, and the relationship between the thread pitch p1 of the first thread element and the thread pitch p3 of the third thread element is as follows: 0.5 p1 < = p3 < = p1; the vacuumizing assembly comprises a vacuum chamber, and the vacuum chamber is communicated with the anti-overflow machine barrel; and the solid accommodating chamber is communicated with the anti-overflow machine barrel and is opposite to the vacuum chamber. Compared with the prior art, materials overflowing from the extruder barrel are sent back into the extruder barrel through the rotation of the anti-overflow screw rod, and even if excessive materials overflowing from the extruder barrel enter the anti-overflow barrel, the materials can enter the solid accommodating chamber along with the anti-overflow screw rod, so that the cooled and deteriorated materials are prevented from entering the extruder barrel again to pollute the materials.

The utility model discloses a hot extrusion die for producing a 3C camera structural member by using 7075 aluminum alloy, which comprises a die body, the die body comprises a right die plate, a middle die plate and a hollow cutter, the right side surface of the right die plate is provided with a cavity, the 7075 aluminum alloy is extruded into the cavity through the right side to form an aluminum flow, the hollow cutter is connected with the right die plate, and the right side wall of the middle die plate is provided with the hollow cutter connected with the cavity. And a first discharging hole communicated with the empty knife is formed in the left side wall. By utilizing the principle that the specific pressure of backward extrusion is greater than that of forward extrusion, the extrusion force required by 7075 aluminum alloy is reduced, so that the speed of aluminum flow entering a cavity is higher, the flow speed is uniform and stable, the flowability is better, the extrusion speed is high, meanwhile, the resistance of the 7075 aluminum alloy entering the cavity is reduced due to the design of the fillet section, and the extrusion efficiency is improved. And the transverse length of the cavity is set to be 2-5mm, so that the die body can complete the forming of the 3C camera structural member only by a small extrusion force.

The invention discloses a flame-retardant silane crosslinked polyethylene overhead cable material and a preparation method thereof.The insulation material is prepared from a material A and a material B according to the weight part ratio of 85: (14-16), the material A is prepared from, by weight, 65-75 parts of LLDPE resin 1, 20-25 parts of LLDPE resin 2, 4-5 parts of a processing aid, 1.9-2.1 parts of silane, 0.095-0.105 part of an initiator and 0.10-0.19 part of an antioxidant; the material B is prepared from the following raw materials in parts by weight: 1-50 parts of LLDPE resin, 1.9-2.1 parts of a catalyst, 3-5 parts of an antioxidant, 49-51 parts of carbon black master batch, 100 parts of a flame retardant and 100 parts of silicone rubber. The excellent flame-retardant effect is realized by utilizing the chemical reaction among the flame retardant, the silicon rubber and the carbon black master batch. The reaction not only improves the flame retardant property of the overhead line, but also does not affect the conventional production of the material A. Meanwhile, the flame retardant is added into the catalyst master batch, so that the extruded silane crosslinked polyethylene cable material can well pass a horizontal combustion performance test, and the safety of an overhead line is ensured.

The utility model provides a square battery cell stacking and extruding device which is characterized by comprising a supporting platform, a bakelite plate, cylinder bodies and a control panel, the number of the cylinder bodies is two, the two cylinder bodies are arranged at the two ends of the supporting platform respectively, the bakelite plate is arranged between the cylinder bodies, the control panel is connected with the cylinder bodies, and parameters of the cylinder bodies are adjusted through the control panel. And through an automatic and mechanical operation mode, the battery cell stacking and extruding speed is obviously improved, the labor cost is reduced, and the production period is shortened. And by accurately controlling extrusion parameters and pressure distribution, the dimensional accuracy and consistency of the battery cell are ensured, and the quality and reliability of a product are improved. The instability and the difference of manual operation are avoided, and the stability and the controllability of the production process are improved.

The utility model relates to the field of TPU film extrusion molding, specifically discloses a TPU film extrusion head, extrusion mould is used for TPU film extrusion molding, and the extrusion mould includes the mould of upper and lower symmetry, and the flow channel for the film raw material in the molten state is formed between two moulds and passes, side plate is provided with two and is fixed in the left and right sides of extrusion mould respectively, and the side plate is used for blocking the left and right sides opening of flow channel, heat dissipation subassembly is provided with two and is fixed in the upper and lower sides of extrusion mould respectively, and the heat dissipation subassembly includes the casing and heat dissipation structure, and the left and right side edges of casing respectively with the side plate of left and right sides abut, the utility model discloses through multiple heat dissipation fins in heat dissipation structure and the abutment of mould surface, first air inlet pipe blows the airflow to heat dissipation fin, to accelerate the heat transfer of extrusion head film forming position place, thus accelerates the film cooling solidification, to make the extrusion head guarantee higher extrusion speed while ensuring the film forming quality, thereby improve the film extrusion molding efficiency.

This utility model discloses a screw structure for an extruder, belonging to the field of extruder technology. The structure includes a screw housed within a casing, comprising a first rod and a second rod rotatably connected to each other. A first gear set is connected to one side of the screw, and a second gear set is correspondingly located on one side of the first gear set. The second gear set is driven by a first cylinder to achieve displacement. The advantage of this utility model is that by driving the second gear set to displacement with the first cylinder, its meshing connection with the first gear set can be changed, thereby allowing the first and second rods to rotate independently at different speeds. This design can precisely optimize the speed matching of each section of the screw, effectively improving extrusion speed and yield, significantly enhancing the adaptability of the equipment to different production needs, and expanding its application range.

The utility model provides an extrusion oil cylinder structure and an extruder, relates to extrusion equipment technical field, extrusion oil cylinder structure includes oil cylinder body, electric cylinder body and drive device, electric cylinder body with the oil cylinder body fixed connection, electric cylinder body includes first cylinder barrel and first telescopic subassembly, the first telescopic subassembly is equipped with first telescopic subassembly, the first telescopic subassembly is equipped with second telescopic subassembly. The first telescopic assembly is arranged in the first cylinder barrel, one end of the first telescopic assembly penetrates through the first cylinder barrel and is fixedly connected with the oil cylinder body, and the first cylinder barrel is fixedly connected with the oil cylinder body; the driving device is fixedly connected with the electric cylinder body; the extruding machine comprises the extruding oil cylinder structure. According to the extrusion oil cylinder structure, through joint matching of the oil cylinder body, the electric cylinder body and the driving device, unnecessary energy consumption can be effectively reduced, the energy-saving effect is achieved, meanwhile, the extrusion speed can be increased, and then the production efficiency is improved.

The invention relates to the technical field of glasses manufacturing, and discloses an anti-impact glasses frame preparation process based on a nano reinforced structure, which comprises the following steps: S1, carrying out melt blending granulation on polycarbonate, thermoplastic polyurethane and nano ceramic particles pretreated by a silane coupling agent KH-560 under the conditions that the temperature is 190-210 DEG C and the rotating speed of a screw is 200-250 r / min to obtain nano reinforced master batches; s2, through a three-layer co-extrusion process, a composite profile with an outer pure PC layer, a middle nano reinforced master batch layer and an inner TPU elastic layer is formed; s3, a micro-nano structure strengthening interface is etched on the surface of the profile through femtosecond laser; s4, performing segmented hot pressing and applying prestress to eliminate stress; and S5, carrying out heat preservation, cooling and forming through a gradient temperature control furnace. The three-layer structural design of PC outer layer rigid supporting, nano ceramic middle layer load dispersing and TPU inner layer buffering and energy absorbing is adopted, micro-nano surface strengthening is matched, the impact strength of the glasses frame is improved, the adhesive force of the coating is further enhanced, and personalized color spraying and anti-fog function integration can be achieved.

This invention discloses a microalloyed magnesium alloy anode material, its preparation method, and its application. The microalloyed magnesium alloy anode material comprises the following components by mass percentage: 1.2%–1.5% aluminum, 0.42%–0.49% manganese, 0.08%–0.20% calcium, no more than 0.05% impurities, and the balance magnesium. This invention employs a low-alloying, rare-earth-free microalloying design, adding a very small amount of non-rare-earth elements to pure magnesium. While considering the cost of magnesium alloy anodes, it achieves good performance and high production efficiency in the plastic forming of magnesium alloy anode materials. The magnesium alloy produced by this invention through microalloying design has excellent forming performance, and the preparation method is suitable for large-scale factory production. It can meet the high-efficiency production requirements of rapid extrusion and rapid rolling, and can also meet the requirements of engineers for different shapes and precision of magnesium alloy anode materials in actual production, further improving the performance of magnesium-air batteries prepared from magnesium alloy anode materials.

The invention belongs to the technical field of regenerated aluminum alloy extruded profiles, and particularly relates to a high-performance low-carbon regenerated aluminum extruded profile and a preparation method thereof, when the total amount of Mg2si is controlled to be 0.79% and the silicon content is 0.1%, the mechanical property sigma b of the alloy is about 218Mpa, the excess silicon content is increased from 0.1% to 0.13%, the sigma b can be increased to 250Mpa, namely 14.6%, and in order to form a certain amount of Mg2Si, the mechanical property sigma b can be increased by 14.6%. Firstly, silicon loss caused by the content of impurities such as Fe and Mn is considered, the total amount of Mg2si is controlled to be 0.79%, the content of silicon is controlled, the tensile strength and the yield strength of the alloy are improved, the extrusion speed can be increased in cooperation with aluminum alloy homogenizing annealing, and compared with a cast ingot subjected to non-homogenizing annealing, the extrusion force can be reduced by about 6%-10%, and the yield of the cast ingot is increased by about 6%-10%. A closed-loop system is formed by adjusting and controlling the extrusion temperature, the extrusion speed and the extrusion force in the extrusion process, so that the extrusion speed and the production efficiency are improved to the maximum extent, and meanwhile the optimal performance is guaranteed.

The invention discloses a flame-retardant polyethylene sheath high-speed extrusion process which comprises the following steps: uniformly mixing low-smoke halogen-free flame-retardant polyethylene and an additive, performing premixing treatment through a double-screw mixing mill, and fully drying the mixed material; the design of the extruder head and the screw rod is optimized; then double cooling is conducted on the screw rod and the screw cylinder; a mold type and a mold material are selected and optimized; and process parameters are adjusted, and the extrusion speed is optimized. By optimizing the temperature setting of each section of the extruder and adopting the advanced mold design, the extrusion speed of the flame-retardant polyethylene sheath is obviously improved, and by adopting the cooling mode of double cooling of the screw and the screw cylinder, the precise control of the temperature of the extruder is realized, and the stability of the material is ensured; the surface defects such as bamboo-like, annular thinning and broken holes in the extrusion process are effectively reduced, the produced flame-retardant polyethylene sheath is smooth and compact in surface and free of air holes, and the section quality is remarkably improved.