915 results about "Compression molding" patented technology

The invention discloses an yttrium-rich neodymium-iron-boron magnet and a preparation method thereof, and belongs to the technical field of rare earth permanent magnet material preparation. The preparation method comprises the following steps: mixing yttrium-rich neodymium-iron-boron matrix alloy powder with grain boundary doped alloy powder containing Gd and / or Ho, and carrying out compression molding and sintering tempering treatment to obtain a first yttrium-rich neodymium-iron-boron magnet. According to the invention, the grain boundary doped alloy powder containing Gd and / or Ho is added into the yttrium-rich neodymium iron boron matrix alloy powder and then is sintered, so that a continuous and uniform non-magnetic thin-wall grain boundary phase structure is formed in the grain boundary, and the coercive force of the magnet is enhanced. Dy and / or Tb heavy rare earth element grain boundary diffusion is carried out based on the first yttrium-rich neodymium-iron-boron magnet after grain boundary modification, a second yttrium-rich neodymium-iron-boron magnet is obtained, the diffusion depth of Dy and / or Tb in the magnet can be increased, the utilization rate can be increased, the cost can be reduced, the coercivity of the magnet can be improved, and the adverse effect of Dy and / or Tb on residual magnetism can be reduced.

The invention provides a biochar composite porous material for heavy metal contaminated soil remediation and a preparation method and application of the biochar composite porous material. The preparation method comprises the steps that biomass raw materials are subjected to high-temperature pyrolysis carbonization and then smashed, ground and sieved, and biochar powder is obtained; dispersing in a phosphoric acid solution to obtain a biochar solution, and filtering, washing and drying after a hydrothermal activation reaction to obtain activated biochar; dispersing in a chitosan solution, carrying out ultrasonic oscillation, filtering, washing and drying to obtain modified charcoal; mixing sodium bentonite, attapulgite and deionized water, uniformly mixing the modified charcoal, the functional slurry and a sodium carboxymethyl cellulose solution to obtain composite slurry, performing compression molding to obtain a green body, and then drying and calcining the green body. The biochar composite porous material prepared by the invention can simultaneously play multiple roles of physical adsorption, chemical chelation, ion exchange and the like in a heavy metal contaminated soil treatment process, so that efficient fixation of various heavy metal ions is realized.

The invention relates to a high-strength wear-resistant archaized brick and a preparation method thereof, and belongs to the technical field of archaized bricks, the high-strength wear-resistant archaized brick comprises the following raw materials: 25-30 parts of fly ash, 30-35 parts of superfine slag powder, 30-35 parts of clay, 8-10 parts of coke powder, 10-12 parts of diatomite, 12-15 parts of potassium feldspar, 10-15 parts of a modified binder and 8-12 parts of a reinforcing agent; according to the technical scheme, a polyhydroxy compound is combined with a silanization reinforcing filler, then combined with an anhydride compound and then combined with novolac epoxy resin, then an amine curing agent is added, and curing is conducted to obtain the modified binder; fly ash, superfine slag powder, clay and coke powder are subjected to ball milling, diatomite, potassium feldspar, a modified binder and a reinforcing agent are added, and the high-strength wear-resistant archaized brick is obtained through stirring, calcining and compression molding. The mechanical property, thermal stability and wear resistance of the archaized brick are improved on the whole, the densification degree of the archaized brick is enhanced, and the comprehensive performance is good.

The invention belongs to the technical field of laser cladding, and particularly relates to a TiC-Fe-Cr coating powder material for an automobile brake disc and a preparation method and application of the TiC-Fe-Cr coating powder material. The coating powder material is prepared from 60%-80% of TiC powder, 15%-30% of Fe powder, 4%-11% of Cr powder and 0.8%-2.2% of polyethylene glycol through mixing, wet grinding, spray drying, compression molding, sintering crushing and spherical densification treatment, and the coating powder material is attached to the surface of the brake disc in a laser cladding mode. By utilizing the arrangement, the invention provides a coating powder material which solves the problem of lack of a special laser cladding material for an aluminum alloy brake disc and overcomes the technical bottlenecks that a traditional grey cast iron brake disc is heavy in weight, quick in abrasion, capable of generating dust and easy to rust and an aluminum alloy brake disc is low in hardness and poor in abrasion resistance.

The invention relates to the technical field of ceramic materials, in particular to a preparation method of a diatomite-based porous ceramic material and application of the diatomite-based porous ceramic material in wastewater pollutant treatment. The preparation method of the diatomite-based porous ceramic material comprises the following steps: mixing a basic raw material, a sintering aid, a pore forming agent and a binder, performing compression molding to obtain a green body, and sintering the green body, the basic raw materials comprise 80-85% of diatomite, 5-10% of kaolin, 0-5% of feldspar and 5-10% of sodium silicate; the mass of the sintering aid is 5% higher than that of the basic raw material; the mass of the pore-forming agent is 25-45% of that of the basic raw material, and the pore-forming agent is selected from one or more than two of crystalline flake graphite, polymethyl methacrylate and spherical graphite. By controlling the composition and dosage of the basic raw materials, the sintering aid and the pore-forming agent, a micro-nano hierarchical pore structure is formed, mechanical properties and permeability are improved at the same time, and good filtration and interception performance on pollutants in wastewater is achieved.

The invention relates to the technical field of magnetron sputtering, and provides a preparation method of a ruthenium sputtering target material. The method comprises the following steps: sequentially carrying out hydrogen introduction reduction treatment, crushing and sieving on ruthenium powder to obtain reduced ruthenium powder; and the reduced ruthenium powder is sequentially subjected to compression molding, cold isostatic pressing treatment and sintering treatment, and the ruthenium sputtering target material is obtained. According to the method, the technical problems that the ruthenium sputtering target material is high in oxygen content and random in grain orientation in a traditional powder metallurgy process are effectively solved by combining a dual deoxidization mechanism of'hydrogen feeding reduction-hydrogen sintering 'and cooperative regulation and control of cold isostatic pressing treatment and sintering process parameters. Results of the embodiment show that the ruthenium sputtering target material prepared by the method can realize the following performance indexes: the purity is greater than or equal to 99.95%, the oxygen content is less than or equal to 20 ppm, the average grain size is less than or equal to 2 microns, the density is greater than or equal to 99%, the required specific crystallographic orientation can be stably formed, and a foundation is laid for subsequent magnetron sputtering preparation of a high-performance film.

The invention relates to a waste incineration fly ash artificial aggregate and a preparation method thereof. The method comprises the following steps: uniformly mixing the waste incineration fly ash, cement and fly ash, then adding water, and uniformly stirring to obtain an aggregate mixture; placing the aggregate mixture in a mold for compression molding to obtain a molded product; the compression molding comprises the following steps: pre-pressing for 10-20 seconds at 6-10 MPa, then pressing for 20-40 seconds at a medium pressure of 12-18 MPa, then uniformly increasing the pressure to a high pressure of 22-28 MPa, and maintaining the pressure for 4-6 seconds at the high pressure of 22-28 MPa; and performing standard curing on the molded product, demolding to obtain a demolded sample, and sequentially performing crushing treatment and steam curing to obtain the waste incineration fly ash artificial aggregate. The prepared waste incineration fly ash artificial aggregate is low in crushing value, low in water absorption rate, high in strength and high in heavy metal curing capacity, a feasible path is provided for resource utilization of waste incineration fly ash, and the waste incineration fly ash artificial aggregate has important environmental protection value and economic value.

The invention relates to a silicon nitride crystal based on high static nitrogen pressure and active nitrogen regulation and a growth method thereof. The silicon nitride crystal is prepared by the growth method, and the method adopts a physical gas phase transmission process and specifically comprises the following steps: introducing high static pressure nitrogen (1-3 bar) and trace NH3 / N2 mixed gas into source powder formed by mixing high-purity beta-Si3N4 and polycrystalline silicon, and dynamically maintaining the gas phase N / Si molar ratio to be (1.33 + / -0.1): 1, thereby inhibiting the decomposition of the source powder and stabilizing the crystal growth; carrying out spray granulation on the source powder, carrying out compression molding, placing the obtained product in a graphite crucible with the inner wall coated with TaC, and carrying out ordered epitaxial growth by controlling the temperature difference of a temperature zone at 1800-2000 DEG C and the axial temperature gradient; according to the method, the dislocation density and the carbon impurity content of the silicon nitride crystal can be remarkably reduced, then the high-purity silicon nitride crystal with a complete structure and a smooth surface is obtained, and the method is suitable for the fields of high-temperature electronic devices and deep ultraviolet light electronics.

The invention discloses a method for curing loess through titanium extraction tailing modified magnesium oxysulfate cement, and belongs to the field of civil engineering materials. The method comprises the following steps: weighing titanium extraction tailings, loess, magnesium oxysulfate cement and water according to a specific mass percentage, mixing and stirring the raw materials to form a solidified soil mixture, and carrying out compression molding, demolding and natural curing to obtain a solidified loess sample. Wherein the titanium extraction tailings are specifically treated industrial tailings, and the magnesium oxysulfate cement is formed by mixing active magnesium oxide and a magnesium sulfate solution according to a specific proportion. By optimizing the raw material ratio and the process, the mechanical property and durability such as water resistance and freeze-thaw resistance of the solidified soil are improved, meanwhile, resource utilization of the titanium extraction tailings is achieved, and the requirement for green and environment-friendly development is met.

The invention relates to the technical field of potassium formate preparation, in particular to a device and method for preparing potassium formate through potassium hydroxide, surrounding feeding, compression forming and double cutting are integrated, potassium hydroxide powder enters a surrounding mechanism through an input pump, raw materials are randomly fed into a compression shell, accumulation is effectively avoided, a compression piston is driven to ascend and descend in a reciprocating mode, and the potassium formate is prepared. And the powder is extruded into a compact cylinder, and feeding and compression are synchronously controlled, so that the continuous process is ensured. The double-cutting system accurately controls the height of a movable blade through an adjusting support so as to lock the total volume of raw materials, an adjustable blade and a bottom supporting base alternately move, a column body is divided into multiple sections of small columns, the reaction surface area is increased through geometric progression, and accurate regulation and control of the reaction rate are achieved. According to the device, quantitative control of the feeding amount, dynamic adjustment of the reaction rate and cleaning of the operation environment are achieved, and the accuracy and safety of potassium formate preparation are improved.

The invention discloses a compression molding method for an electrode frame cover plate of a flow battery, and relates to the technical field of energy storage battery manufacturing, and the compression molding method comprises the following steps: embedding a high-sensitivity miniature strain sensing unit on the inner wall of a forming mold cavity, constructing a stress response sensing network, and synchronously sampling to establish a dynamic time baseline; the sensor is used for capturing stress disturbance data in a forming period; and based on the dynamic time base line, extracting a strain change curve in pressure loading and unloading stages, reconstructing a stress wave propagation path diagram through time inversion, and determining a stress wave initial position and an energy distribution area. According to the method, the dynamic time base line and the stress wave propagation diagram are constructed, and the thermoacoustic test and the spectrum analysis are combined, so that the accurate identification of the energy focusing area is realized; high-frequency perturbation pulses are introduced in a pressure unloading stage, so that the coherence of stress waves is scattered, the peak stress is reduced, the generation of subfissures is inhibited, the sealing property and strength of the electrode frame cover plate are improved, and the service life of the flow battery is prolonged.

A production method of pig iron using a blast furnace with a tuyere includes: charging a first layer containing an iron ore material and a second layer containing coke alternately in the blast furnace; and reducing and melting the iron ore material in the charged first layer while injecting an auxiliary reductant into the blast furnace by hot air blown from the tuyere, in which: an aggregate for letting through the hot air to a central portion of the blast furnace is blended into the first layer; and the aggregate contains a reduced iron molded product obtained through compression molding of reduced iron.

The invention discloses a cerium-containing high-abundance rare earth sintered neodymium iron boron permanent magnet which does not contain heavy rare earth and does not need a grain boundary diffusion process and a preparation method thereof. The magnet is formed by crushing and mixing three alloy casting pieces, the three alloy casting pieces are an Nd / Pr-rich phase, a Ce-La-rich phase and a Y-Nd-rich phase respectively, and Ce accounts for more than or equal to 30wt% of the total amount of all rare earth elements; the trace elements (Al, Cu, Ga, Nb, Zr and the like) are uniformly introduced in the smelting stage of each main phase, and grain boundary reconstruction is induced through in-situ hydrotreating to form a thin and continuous rare earth-rich grain boundary phase; and after orientation compression molding, vacuum sintering and multi-stage heat treatment, a sintered magnet with excellent magnetic performance is obtained. According to the product, the intrinsic coercive force Hcj is larger than or equal to 15 kOe, the residual magnetism Br is larger than or equal to 13.7 kG, and the maximum magnetic energy product (BH) max is larger than or equal to 39 MGOe. The problems that a high-Ce magnet is low in coercive force, discontinuous in grain boundary phase and the like are solved, the method does not need to depend on Dy / Tb heavy rare earth and a grain boundary diffusion technology thereof, the cost is reduced by 30% or above, and the method is suitable for the fields of new energy automobiles, wind power generation and the like and has a good industrialization prospect.

The invention discloses a composite film with a dynamic optical anti-counterfeiting function, which belongs to the technical field of optical anti-counterfeiting, and comprises a base material layer, a release layer, an imaging layer, a plating layer, a dynamic optical function layer, a protective layer and an adhesive layer which are sequentially laminated, the imaging layer is provided with a static holographic pattern formed by compression molding; the dynamic optical functional layer comprises a photo-thermal response type semi-crystalline polymer and near-infrared absorption dye dispersed in the photo-thermal response type semi-crystalline polymer, has a three-dimensional cross-linked network structure formed by ultraviolet curing, and can generate a dynamic anti-counterfeiting effect by triggering reversible phase change through irradiation of laser with set wavelength. The invention also discloses a preparation method of the composite film. Through integration of dual anti-counterfeiting mechanisms of static holography and dynamic response, the comprehensive requirements of high safety, low cost, easy verification and environmental adaptability are met, and the method is particularly suitable for high-end anti-counterfeiting application which needs to be embedded into a card through a lamination process.

The invention provides a multi-element material integrated compression molding component manufacturing method and a product. The product is composed of a plurality of embedded reinforcing skeleton spare parts, an integrated carbon fiber first side plate and an integrated or split type second side plate. Wherein the embedded reinforcing skeleton spare parts are manufactured by adopting a hot gas bulging forming process; the embedded reinforcing skeleton spare parts are connected and assembled through welding to form a reinforcing inner skeleton sub-assembly; the integrated carbon fiber first side plate is matched with the reinforced inner framework sub-assembly in shape, and the integrated carbon fiber first side plate and the reinforced inner framework sub-assembly are combined to form a composite forming sub-assembly through a mold pressing process; and the second side plate and the composite molding sub-assembly are combined to form a product assembly structure.

The invention discloses a functional osteochondral repair material which comprises a cartilage layer, a transition layer and a bone layer which are sequentially connected, the cartilage layer takes hyaluronic acid, I-type collagen and chitosan as base materials, the transition layer takes hydroxyapatite and a polylactic acid-glycolic acid copolymer as base materials, and the bone layer takes hyaluronic acid, I-type collagen and chitosan as base materials. The bone layer takes beta-tricalcium phosphate, hydroxyapatite and a polylactic acid-glycolic acid copolymer as base materials, the invention relates to the technical field of medical biological materials, by designing the organic-inorganic composite transition layer, the gradient connection cartilage layer and the bone layer, and the interfacial shear strength is greater than or equal to 0.5 MPa, the problem of interlayer stripping of a traditional layered material is effectively solved, and the medical material has the advantages of high mechanical strength, high mechanical strength and high mechanical strength. According to the selective laser sintering 3D printing material, the shearing stress and the compression stress during joint movement can be borne, mature medical material production equipment such as freeze drying, compression molding and sintering is adopted in the preparation process, large-scale batch production can be achieved, meanwhile, personalized preparation of selective laser sintering 3D printing is supported, and the requirements of different clinical scenes are met.

The zirconium oxide ceramic modified by the graphene / zirconium oxide calcined composite microspheres is prepared from stable zirconium oxide powder A and the graphene / zirconium oxide calcined composite microspheres accounting for 25 wt% or below of the total ceramic powder through mixing, compression molding and sintering, the preparation method of the graphene / zirconium oxide calcined composite microspheres comprises the following steps: preparing stable zirconium oxide powder B, graphene and a solvent into slurry; and carrying out ball milling, spray drying and calcination to obtain the graphene / zirconium oxide calcined composite microspheres. According to the present invention, the graphene / zirconium oxide calcination composite microsphere and the SPS sintering are performed, such that the dispersed graphene / zirconium oxide two-phase structure region exists in the obtained zirconium oxide composite ceramic so as to consume the large amount of the crack growth energy, and the significant toughening effect is provided.

The invention belongs to the technical field of alloys, and particularly provides an ultra-coarse hard alloy and a preparation method thereof.The preparation method comprises the steps that solid raw materials including tungsten carbide powder and cobalt powder are subjected to wet ball milling and drying, and a mixture is obtained; carrying out compression molding on the mixture to obtain a pressed blank; and then the pressed blank is sequentially subjected to low-temperature oscillation pressurization, pre-sintering and oscillation pressurization sintering treatment. The WC-Co alloy prepared through the method has ultra-coarse grains, the size and distribution of tungsten carbide grains in the alloy can be effectively controlled through the method, the distribution uniformity of a binding phase can be improved, and the prepared ultra-coarse hard alloy has high hardness and strength.

The embodiment of the invention discloses a hafnium oxide-based ferroelectric film doped in a calcium gap position and a preparation method. The method comprises the following steps: preparing a target material: mixing hafnium oxide and calcium oxide according to a set ratio, and grinding to obtain mixed raw material powder; calcining the mixed raw material powder for the first time; grinding the mixed raw material powder calcined for the first time, and performing compression molding to obtain a target material biscuit; calcining the target material biscuit for the second time to obtain the hafnium oxide-based ceramic target material doped in the calcium gap position; a commercial bottom electrode La0. 7Sr0. 3MnO3 target material is used as a first sputtering target, sputtering is carried out under a first set condition, and an LSMO bottom electrode thin film is obtained; taking the calcium gap position doped hafnium oxide-based ceramic target material as a second sputtering target, sputtering under a second set condition, and epitaxially growing on the LSMO bottom electrode film to form a calcium gap position doped hafnium oxide-based ferroelectric film; the chemical composition of the hafnium oxide-based ferroelectric film doped in the calcium gap position is CaxHf (1-x) O (2-x), x is 0.01-0.05, and calcium ions occupy the gap position of a hafnium oxide crystal lattice.

The invention belongs to the technical field of target materials, and discloses a multi-element doped indium germanium oxide ceramic target material and a preparation method thereof. The ceramic target material comprises indium oxide, germanium oxide and doped oxide, and the doped oxide is one or two of cerium oxide, hafnium oxide or titanium oxide; the preparation method comprises the following steps: mixing In2O3 powder, GeO2 and doped oxide powder, carrying out ball milling, drying, grinding and sieving on the mixed powder to obtain mixed oxide powder, sequentially carrying out compression molding and cold isostatic pressing on the mixed oxide powder to obtain a target material green body, putting the target material green body in an oxygen atmosphere, and carrying out sintering to obtain the target material. A multi-element doped indium germanium oxide ceramic target material is obtained by using a multi-stage sintering method; by adjusting the doping elements in the target material, the proportion of the doping elements and the staged sintering temperature and time, the density and the conductivity of the target material can be remarkably improved.

The invention provides calcined coke and a preparation method thereof, and belongs to the field of carbon materials. The method comprises the following steps: adding a binder into deashed coal, and uniformly mixing to obtain a mixture; adding water into the mixture, and uniformly mixing to obtain a paste material; carrying out compression molding on the paste to obtain formed coke green blocks; and calcining the formed coke green block to obtain calcined coke. According to the invention, an initial bonding network is constructed through the binder, and the moisture of the paste material is controlled based on the content of the fine powder, so that the high-strength formed coke green block is obtained through compression molding of the fine-particle de-ashed coal. After the raw blocks are calcined, key indexes such as particle stability of the raw blocks all meet carbon production requirements, so that the petroleum coke is effectively replaced by the fine-particle de-ashed coal.

The application discloses a kind of long-acting targeted cultivation alga high-density complex of water body and preparation method thereof, it is related to aquaculture field, the high-density complex includes the following weight parts components: small material premix 3-5 parts, sodium chloride 35-40 parts, gelatinized starch 1-3 parts, attapulgite 40-50 parts, cement 3-7 parts, titanate coupling agent 1-3 parts, molasses 2-4 parts and purified water 1-5 parts.The preparation method of the high-density complex includes the following steps: small material premix is subpackaged, is stirred uniformly with other components and adds molasses to carry out humidity control, then subpackaging and compression molding are formed, in turn plastic envelope, package and film winding.The long-acting targeted cultivation alga high-density complex of water body provided in the application can directional cultivation diatom and chlorella, and continuously release functional material, stabilize the abundance of beneficial algae, effectively solve the problem that directional cultivation beneficial organism cannot be carried out and functional material release speed is too fast.

Methods for fabricating a semiconductor package and devices formed therefrom are disclosed herein. The method includes inserting a substrate with a chip-on-wafer (CoW) arrangement thereon into a chamber of a mold of a compression molding apparatus. The method also includes positioning a film over the CoW arrangement. The method further includes dispensing, after positioning the film over the CoW arrangement, a liquid-type molding compound into the chamber. The method further includes compressing the liquid-type molding compound and the film to form a molding underfill (MUF) to surround and encapsulate the CoW arrangement.

Lignin pellets comprising fused lignin are described herein. The lignin pellets may further comprise a processing aid, and / or a surfactant, and / or a chemical modifying agent, and / or a compatibilizer and / or a thermoplastic polymer. An extrusion process for producing the lignin pellets and their use in the manufacture of lignin thermoplastic blend products, polyols, polyphenols, polyaromatics and polyurethanes is also disclosed herein. The extruded lignin pellet may be dry-blended with additional thermoplastic and / or additive and then directly processed using processes such as injection molding, compression molding, extrusion, extrusion coating, blowing, thermoforming, stamping, foaming, fiber drawing, calendering or rolling.

The application relates to the technical field of magnetic materials, in particular to a preparation method of high-performance heavy-rare-earth-free neodymium iron boron magnets; the preparation method comprises the following steps: rapidly quenching a main phase alloy into a flake, obtaining coarse powder after hydrogen breaking; immersing the coarse powder in an ethanol mixed solution containing lanthanum nitrate and cerium nitrate, drying the pretreated coarse powder after ultrasonic-magnetic stirring cooperative treatment; adding an antioxidant and a lubricant into the pretreated coarse powder, preparing fine powder with an average particle size of 2-3.5 microns through airflow milling; performing magnetic field orientation compression molding on the fine powder under nitrogen protection, improving the density through cold isostatic pressing; finally, performing vacuum sintering and step-by-step tempering treatment to obtain the high-performance heavy-rare-earth-free neodymium iron boron magnets; wherein the main phase alloy is composed of the following components with mass percentage: 28-31wt.% Pr25Nd75, 0.88-1.2wt.% B, 0-0.1wt.% Al, 0.05-0.3wt.% Ti, 0.05-0.4wt.% Cu, 0.5-1.4wt.% Co, 0.1-0.4wt.% Ga, and the balance is Fe; the prepared neodymium iron boron magnet has the dual characteristics of high coercivity and high remanence, and effectively guarantees the performance and quality.

The utility model provides a forming die for a multi-material composite bonding silica gel product, which comprises a base, a support fixedly connected to the surface of the bottom side of the base, a guide post fixedly mounted on the top side of the base, and a top plate fixedly mounted at the top end of the guide post; the lower die assembly is mounted on the surface of the top side of the base; the upper die assembly is installed on the surface of the top side of the top plate, and the upper die assembly and the lower die assembly are matched to be used for compression molding of the silica gel product; and the aligning mechanism is mounted on the surface of the guide column. Through cooperation of the adjusting assembly and the clamping assembly, the clamping assembly can conveniently fix and clamp a product, it is guaranteed that the clamped product is stably placed, a material product is conveniently and stably placed, it is guaranteed that the material product is stably placed, the material product moves downwards along a limiting plate and a clamping plate, and it is guaranteed that the material product and a silica gel product are stably bonded; and the bonding accuracy of the silica gel product is improved.

A curved glass and a preparation method is provided. The preparation method for curved glass includes: melting a glass batch into a glass liquid, and clearing the glass liquid; introducing the cleared glass liquid into a mold cavity with a preset shape, and forming, by using a compression molding process, a glass product with a shape corresponding to that of the curved glass, where a size of the glass product is greater than a size of the curved glass; annealing the molded glass product; and processing the annealed glass product into the curved glass based on the shape and the size of the curved glass.

The utility model discloses a tea cake pressing and forming device for tea processing. The tea cake pressing and forming device comprises a workbench, an L-shaped connecting plate is installed on the workbench, a storage barrel is movably arranged on the L-shaped connecting plate, the bottom end of the storage barrel is in an opening state, a supporting plate is connected to the L-shaped connecting plate, a stamping mechanism is arranged on the supporting plate, and a mold and a moving mechanism are arranged on the workbench. The moving mechanism is provided with a feeding piece, the feeding piece makes contact with the bottom end of the storage vat, the device is easy to operate, the automatic feeding function of tea leaves can be provided on the premise that the tea cake making function is guaranteed, then the problem that in the prior art, the tea leaf feeding efficiency is low is solved, and the practicability of the device is further improved.

The utility model relates to the technical field of demoulding devices, and discloses an automatic demoulding device for tea cake compression moulding, which comprises a main body bottom plate, a hydraulic table is fixedly arranged at the top of the main body bottom plate, connecting rods are fixedly connected to the top of the hydraulic table close to four corners, a fixing plate is fixedly connected among the top ends of the four connecting rods, and a plurality of demoulding holes are formed in the fixing plate. A stamping device is fixedly mounted at the top of the fixing plate, the output end of the stamping device is slidably connected with the hydraulic table, a blocking and pushing plate is fixedly connected to the edge, close to the front side, of the bottom of the hydraulic table, and a hydraulic telescopic rod is fixedly connected to the edge, close to the rear side, of the top of the main body bottom plate; the utility model solves the problem that the working efficiency of the equipment is reduced because the traditional demoulding device is incapable of synchronously and uniformly collecting compressed tea cakes in the process and is incompetent for larger working requirements.

The invention relates to a large-tonnage two-point press machine, and relates to the technical field of compression molding. The die comprises a working frame, an upper die and a lower die, a driving part is arranged at the top of the working frame, the driving part is connected with the upper die and used for driving the upper die to move up and down, the lower die is arranged at the bottom of the working frame and located over the upper die, a guide block is arranged on the side wall of the upper die, a guide groove is formed in the side wall of the working frame, and the guide block is inserted into the guide groove. The working frame is provided with a limiting mechanism, the guide block can abut against the limiting mechanism, and the limiting mechanism is used for limiting movement of the guide block. The device has the effect that the movement position of the upper die can be flexibly limited so as to adapt to different working requirements.