195results about How to "Fast molding speed" patented technology

The invention discloses a two-photon polymerization 3D printing photoresist based on a boric acid ester bond and a preparation method thereof. The photoresist comprises a functional monomer containing the boric acid ester bond, a multifunctional acrylate monomer and a two-photon initiator, according to the two-photon polymerization 3D two-photon printing photoresist prepared by adopting the functional monomer containing the dynamic boric acid ester bond to reinforce and toughen conventional acrylic ester, the performance of resin is regulated and controlled by using different types of boric acid ester monomers and adding different proportions of boric acid ester monomers, the mechanical strength of the obtained photoresist can be regulated and controlled, and the performance of the photoresist is improved. Different parameters such as printing effect, hot residual weight and the like can be selected for a final application scene, and the method has a very wide application prospect.

The high-speed centrifugal forming machine comprises a machine base and a pipe die, a movable feeding mechanism for feeding materials into the pipe die is arranged at one end of the pipe die, and a rolling compression roller mechanism for compressing cement materials is arranged in the pipe die. The machine base is provided with a vibration excitation mechanism which is matched with the rolling compression roller mechanism to tamp cement materials. The rolling compression roller mechanism comprises a compression roller body, a driving end stand column mechanism arranged at one end of the compression roller body and a driven end stand column mechanism arranged at the other end of the compression roller body. The shock excitation mechanism comprises a shock excitation base and a shock excitation beam, the two ends of the shock excitation beam are installed on the shock excitation base through elastic mechanisms, and a roller set used for supporting the pipe die is installed on the shock excitation beam. According to the machine, the rolling compression roller mechanism and the excitation mechanism are arranged, cement raw materials are centrifuged, rolled and excited in corresponding cement pipe molds to manufacture cement pipe piles, the whole machine is convenient to arrange, capital construction investment is saved, energy consumption is low, noise is low, operation is easy, and the intelligent integration degree is high.

The utility model discloses cigarette packaging paper. The cigarette packaging paper comprises an inner part, an outer part, a release layer (105) and an adhesive sticker layer (106), wherein the release layer (105) and the adhesive sticker layer (106) are arranged between the inner part and the outer part; the outer part sequentially comprises an outer PE (polyethylene) lamination layer (101), an outer paper layer (102), an outer composite adhesive layer (103) and an outer PET (polyethylene terephthalate) layer (104); the inner part sequentially comprises an inner PET layer (107), an inner composite adhesive layer (108), an inner paper layer (109) and an inner PE lamination layer (110); the release layer (105) is close to the outer PET layer (104), and the adhesive sticker layer (106) is close to the inner PET layer (107). According to the utility model, the outer PE lamination layer and the inner PE lamination layer are respectively laminated on the outermost layer and the innermost layer of the packaging paper to form the double-sided laminated paper, so that the leakproofness and the barrier property of the paper are effectively improved. The pressure relief device is arranged at the bottom of the packaging box, so that the problem that the whole packaging box swells due to the fact that the sealing performance of the packaging box is improved is solved.

The invention discloses a non-contact stirring dry method electrode material fibration method and a prepared pole piece. The principle that centrifugal force generated by autorotation and convection shear force caused by revolution are adopted, so that materials are uniformly mixed and fiberized by a'twisting 'and'pulling' force field generated under the condition of speed difference. The binder and the conductive agent are stirred and mixed for the first time in a non-contact mode, and the binder is coated with the conductive agent in advance; carrying out secondary non-contact stirring and mixing on the coated binder and the active substance particles to obtain a uniformly mixed pre-fibration material; carrying out uniform fibration treatment on the pre-fibration material, and then carrying out step-by-step hot pressing to obtain a dry-method electrode membrane; and performing hot-pressing compounding on the electrode film and a current collector containing a conductive agent to prepare the dry-method electrode plate. According to the non-contact stirring dry method electrode material fibration method, the length of a production line is shortened; the production cost is greatly reduced; the electrochemical performance is improved; and large-scale batch production can be realized.

The invention relates to the technical field of metal processing, and discloses a hot press molding process for metal product manufacturing, which comprises the following procedures: S1, raw material preparation, S2, mold design and manufacturing, S3, preheating treatment, S4, hot press molding, S5, cooling and demolding, S6, post-treatment and S7, packaging and storage.The process can improve the product quality, and the product quality is improved through strict raw material preparation; according to the die, impurities are removed, the size precision is ensured, a foundation is laid for high-quality products, the shape and size precision of the products is ensured, the consistency and reliability of the products are improved, the hot-press forming process is optimized, the temperature, pressure and time are accurately controlled, a die cavity is fully filled with metal materials, internal defects of the products are reduced, and the product quality is improved. The mechanical property of the product is improved, meanwhile, the production efficiency is improved, the hot press forming difficulty is reduced through the reasonable preheating treatment and the segmented pressurizing and heating mode, and the forming speed is increased.

The utility model provides low-temperature casting equipment for an automobile aluminum alloy hub, belongs to the technical field of hub casting, and solves the problems that an existing aluminum alloy hub liquid forging die is very simple in structure, but the forging die needs to be naturally cooled due to the fact that a cooling device is not arranged in the hub die; and in the machining process, liquid aluminum alloy is solidified and shaped at the position of a mold slowly, so that the machining treatment effect and the machining speed of the automobile hub are affected. The low-temperature casting equipment for the automobile aluminum alloy hub comprises a lower die plate, side dies fixed to the top of the lower die plate, a lower die fixed between the side dies, an upper die movably connected with the side dies and a water tank, wherein the bottom of the lower die makes contact with the lower die plate. According to the water circulation cooling device, the upper mold and the side mold can be subjected to water circulation cooling at the same time, a hub can be rapidly cooled, the forming speed of the hub can be effectively increased, meanwhile, the design is simple, and normal demolding of the hub cannot be affected.

The utility model relates to the technical field of pouring dies, and discloses a metal part forming die which comprises a die holder, a lower die and an upper die, a rotating shaft is rotatably connected to the outer surface, close to the right end, of the front side of the die holder, a first motor is fixedly installed on the outer surface of the front side of the die holder, and a poke rod is fixedly arranged on the outer surface of the rotating shaft in a sleeved mode. A vertical plate is fixedly connected to the inner surface of the bottom of the mold base, a movable rod is movably inserted into the outer surface of the vertical plate, a spring is fixedly connected to the outer surface of the vertical plate, and a knocking head is fixedly connected to the outer surface, away from the baffle, of the movable rod. According to the metal part forming mold, a first motor drives a rotating shaft to rotate and drives a poke rod to rotate, the poke rod makes contact with a baffle and is matched with a spring, in the process that the rotating shaft drives the poke rod to rotate, a knocking head knocks the surface of a lower mold, bubbles in pouring liquid are removed, and the quality of formed parts is improved; and the possibility that air holes are formed in formed spare and accessory parts is reduced.

The invention relates to a moderator element for a nuclear reactor, the moderator element comprises a shell and a core block, the core block is a metal hydride moderator and is packaged in the shell, and the shell is a ceramic shell or a metal shell and is composed of a shell body and a cover body which are connected in a sealed mode. The invention also relates to a preparation method of the moderator element for the nuclear reactor. According to the moderator element for the nuclear reactor, the shell is prepared through the additive manufacturing forming technology, then the heat treatment technology is combined, densified packaging of the moderator is achieved, the problems that the moderator is prone to oxidation and corrosion in the using process are solved, and the requirement of the advanced nuclear reactor type for the moderator is met.

According to the manufacturing process of the suede canvas, in the scheme, a screen printing device is used for gluing the canvas, then electrostatic flocking equipment is used for flocking, the forming speed of the canvas is high, a subsequently formed pattern can have more spatial stereoscopic impression through flocking, the aesthetic requirement is met, in the scheme, the components of a glue solution are limited, and the production efficiency is improved. Water-borne epoxy resin is matched with water-borne polyurethane and polyethyleneimine to form an interpenetrating network structure, the hardness, water resistance, scraping resistance and the like are improved, and by adding polyethyleneimine and nano titanium dioxide, the adhesive force with the canvas and the flocking firmness are improved.

The utility model relates to the technical field of foam packaging box production, in particular to a pressing die which comprises a bottom plate, supporting columns are fixed to the four corners of the top of the bottom plate, a top plate is fixed to the tops of the supporting columns, a pressing die assembly is arranged on the top plate, and a plurality of stand columns are fixed to the top of the bottom plate. The same fixed mold frame is fixedly mounted at the tops of the stand columns, a mounting groove is formed in the middle of the top of the fixed mold frame, an inner mold frame is fixedly mounted on the inner wall of the mounting groove, a material ejecting assembly is arranged at the bottom of the inner mold frame, and a water storage tank is fixedly mounted at one end of the fixed mold frame. According to the utility model, the automatic demolding performance is realized, cold water is blown between the fixed mold frame and the inner mold frame, and heat generated in the mold is taken away in time through the flowing cold water, so that the whole device is provided with a better cooling structure, the molding speed of a foam packaging box in the mold is accelerated, and the demolding efficiency is improved.

The invention belongs to the technical field of pipe fitting processing and forming, particularly relates to pipe fitting casting and forming equipment and a casting and forming method, and provides the following scheme aiming at the problems that a mold cannot be fully and uniformly filled with existing slurry, the efficiency of manual coating of a release agent is low, the phenomenon of coating leakage exists, and meanwhile pipe fitting forming consumes time. Comprising a base, a U-shaped frame is fixed to the top of the base, a rotating column is rotationally connected between the top of the base and the inner wall of the top of the U-shaped frame, the outer wall of the rotating column is fixedly sleeved with a rotating base rotationally arranged at the top of the base, a plurality of round holes are formed in the top of the rotating base, and a first motor is fixed in the base. The inner mold rotates relative to the outer mold, then slurry can be evenly poured into the pouring cavity, the hollow phenomenon is avoided, the slurry in the pouring cavity is heated through the inclined holes in the later period, and the forming speed of the slurry is increased.

The utility model discloses high-strength refractory material pouring forming equipment which comprises a shell, a lower die is fixedly connected to the middle axis of the top of the shell, a sealing plate is arranged at the bottom of the inner wall of the lower die, rectangular plates are fixedly connected to the two sides of the bottom of the sealing plate, and connecting plates are fixedly connected to the bottoms of the rectangular plates. The bottom of the left side of the shell communicates with a one-way valve. Through the arrangement of the shell, the lower mold, the sealing plate, the rectangular plate, the connecting plate, the spring, the sliding rod, the air pump, the one-way valve, the fan and the spray head, the auxiliary demolding work can be carried out, the auxiliary cooling effect can be achieved, the material forming speed is high, and therefore work is efficient; by arranging the fixing frame, the electric telescopic rod, the upper mold, the box body, the vacuum pump, the motor, the lead screw and the inserting plate, the mold cavity can be vacuumized conveniently, the situation that the whole mold cavity cannot be filled with materials due to residual air in the mold cavity is avoided, and the material forming effect is good.

The utility model discloses a quick forming extruder for fructus aurantii paste, which comprises a conveying table and a hollow roller rotatably mounted in the middle of the conveying table, and air cooling mechanisms are arranged in the conveying table and horizontally distributed on two sides of the hollow roller; the air cooling mechanism comprises two-way threaded grooves symmetrically formed in the two ends of the hollow roller, guide plates are in threaded connection with the outer sides of the two-way threaded grooves correspondingly, rotating units are arranged at the tops of the guide plates, blowing rows are rotationally installed on the two sides of the upper portion of the middle of the conveying table correspondingly, and air cylinders are fixed to the side ends of the blowing rows. The air cylinder is communicated with the interior of the air blowing row, a piston rod is distributed in the air cylinder in a sliding mode, and the side end of the piston rod is connected to the rotating unit. The rapid forming extruder for the fructus aurantii paste has the effects that the forming speed of the fructus aurantii paste is increased, the cooling time of the fructus aurantii paste is shortened, and the production efficiency of the fructus aurantii paste is improved.

The invention discloses a cyclamen tissue culture propagation method taking ovules as explants, and belongs to the technical field of plant tissue culture. The method comprises the steps of ovule inoculation, callus induction and screening, bud induction and proliferation, strong seedling culture, rooting induction and acclimatization and transplantation. According to the method, casein hydrolysate nutrition supporting, dynamic hormone regulation and control, bud cluster-shaped proliferation, strong seedling rooting, combination of in-bottle seedling hardening and out-bottle seedling hardening, transplanting matrix improvement and other methods are adopted, and an effective new way is provided for improving the cyclamen tissue culture inoculation survival rate and the seedling emergence survival rate.

The application discloses a regenerated cationic cellulose-based composite filter membrane and a preparation method and nanometer plastic removal application thereof, and belongs to the technical field of regenerated cellulose water treatment filter materials. In the application, a sodium hydroxide-urea-thiourea ternary system is used to fully dissolve cellulose, the cellulose is modified by 2,3-epoxypropyl trimethylammonium chloride cation, a PVDF membrane is used as a base, and a hydrophilic composite filter membrane is prepared by vacuum filtration and loading of a cationized cellulose layer. The preparation process is mild, and the defects of the traditional cellulose membrane, such as insufficient dissolution, uneven pore size and poor screening precision, are solved. The filter membrane surface is positively charged, the hydrophilicity is greatly improved, the water contact angle is only 39°, the particle size of 50-500 nm carboxylated nanometer plastics can be efficiently intercepted, the removal efficiency of 100 nm polystyrene nanometer plastics reaches 97.01%, and the water flux is excellent. The process is green and low-cost, can remove polystyrene, polymethyl methacrylate and polyvinyl chloride nanometer plastics in a wide range, and has a good engineering application prospect in the field of deep treatment of water body nanometer plastic pollution.

The utility model discloses a laborsaving type nozzle material ejection mechanism, which relates to the field of plastic moulds and comprises a mould base, a top cover plate is inserted into the inner wall of the top of the mould base, a filling port is formed in the inner wall of the top of the top cover plate, an insertion groove is formed in the inner wall of the side surface of the mould base, and two groups of telescopic rods are mounted on the inner wall of the side surface of the insertion groove. Inserting pieces are arranged on the sides, close to the telescopic rods, of the inner walls of the inserting grooves, oblique-angle blades are installed on the outer walls of the side faces of the inserting pieces, heat insulation plates are installed on the sides, away from the oblique-angle blades, of the outer walls of the side faces of the inserting pieces, ejection pieces are inserted into the inner wall of the bottom of the mold base, and hydraulic rods are installed on the inner wall of the bottom of the mold base and close to the bottoms of the ejection pieces. And multiple groups of heat dissipation holes are formed in the bottom inner wall, close to the bottom of the telescopic rod, of the insertion groove. The ejection efficiency of the device can be improved, the forming speed is high, and the practicability is improved.

The utility model relates to the technical field of glass substrates, and discloses a glass substrate plastic package mold opening device, the output end of an air cylinder penetrates through one side of a heating box and is fixedly connected with a pushing plate, one side of the heating box provided with a discharging groove is fixedly connected with a discharging channel, the discharging channel is provided with a first sliding groove, and a second sliding groove is formed in the first sliding groove. A baffle is connected into the first sliding groove in a sliding mode, a second sliding groove is formed in the discharging channel, and a moving block is connected into the second sliding groove in a sliding mode. According to the device, the driving motor I is arranged, so that the stirring blade II rotates so as to forward stir a molten glass blank in the heating box, and the rotating shaft I and the rotating shaft II rotate to drive the stirring blade I and the stirring blade III to reversely rotate so as to reversely stir the molten glass blank in the heating box; according to the glass substrate plastic packaging device, the heating box is arranged, so that a glass blank in the heating box can be better stirred after being melted, glass blank liquid is more uniform, the glass substrate plastic packaging effect is better, and the quality of the formed glass substrate can be effectively improved.

The present invention relates to the field of building material processing, and specifically discloses a building material forming device, including an outer frame, a support frame is fixedly installed on the outer surface of the outer frame, a top cover is fixedly installed at the top opening of the outer frame, a feed port is provided on the surface of the top cover away from the side of the outer frame, and a discharge port is provided on the bottom outer surface of the outer frame, and also includes: a crushing mechanism, the crushing mechanism is connected to the bottom of the power mechanism by sliding up and down, and the crushing mechanism is simultaneously placed inside the outer frame, and the crushing mechanism is used to cooperate with the stirring mechanism to crush the sand and gravel in the concrete raw materials. At the same time, because a kneading plate is provided at the outer end of the rotating plate, wherein the kneading plate is provided in a semicircular tube shape and has elasticity, the kneading plate will generate a pulling force on the raw materials during the rotation process, thereby causing small cavities to be continuously formed inside the raw materials, thereby greatly improving the mixing effect of the raw materials, and also speeding up the stirring speed.

The utility model discloses a four-fold rolled square steamed bun production line combining machine which comprises a base, a dough pressing mechanism, a dough combining mechanism, a dough block conveying belt, a first dough sheet conveying belt and a second dough sheet conveying belt. A formed dough sheet conveying belt is arranged on the base; the dough pressing mechanism and the sheet combining mechanism are arranged at the two ends of the base respectively, the dough pressing mechanism is used for pressing dough blocks into dough sheets, and the sheet combining mechanism is used for combining the two dough sheets into one sheet; a formed dough sheet outlet of the sheet combining mechanism is in butt joint with one end of the formed dough sheet conveying belt; the dough block conveying belt is arranged above the formed dough sheet conveying belt, and one end of the dough block conveying belt is butted with a dough block inlet of the dough pressing mechanism; the first dough sheet conveying belt and the second dough sheet conveying belt are sequentially arranged above the dough block conveying belt; wherein the first dough sheet conveying belt and the second dough sheet conveying belt are configured to alternately move and are used for conveying dough sheets pressed by the dough pressing mechanism into the sheet combining mechanism and realizing butt joint between the two dough sheets. According to the four-fold rolled square steamed bun production line combining machine disclosed by the utility model, the operations of dough pressing, dough combining, forming, dough rolling and dough slicing of dough blocks can be completed, and the whole equipment is compact in structure and small in occupied area.

The invention discloses a carbon dioxide-based PPC-P straw material and a preparation method thereof. The carbon dioxide-based PPC-P straw material is prepared from the following raw materials in parts by weight: 20 to 70 parts of PPC-P, 10 to 45 parts of PBS, 5 to 20 parts of PBAT, 1 to 5 parts of organic modified montmorillonite, 5 to 15 parts of inorganic filler, 0.5 to 1 part of compatilizer, 0.3 to 1 part of dispersing agent and 0.3 to 2 parts of nucleating agent. The carbon dioxide-based PPC-P straw material is excellent in mechanical and physical properties and degradation performance, PPC-P is used as basic resin, PBS, PBAT and organic modified montmorillonite are added to modify the PPC-P, the heat resistance and toughness of the straw material are effectively improved, meanwhile, the compatilizer, the dispersing agent and the nucleating agent are added, and the carbon dioxide-based PPC-P straw material is prepared. The surface flexibility and the cooling speed of the straw material are effectively improved, the straw material is finally decomposed into carbon dioxide and water under the condition of natural degradation, and full degradation is achieved.

The utility model relates to the field of petroleum chemical technology, concretely relates to a catalyst settlement system stable in operation and good in settlement effect, including clarification mechanism, sludge buffer tank, feed pipeline, sludge tank, backflow pipeline, overflow pipeline, filter press, filtrate tank and sludge discharge pipeline, the clarification mechanism includes a plurality of settlement tanks that are arranged side by side from front to back in proper order and the clarification tank that is arranged at the end of clarification mechanism, the bottom of clarification tank is provided with special ammonium sulfate solution discharge pipeline, is provided with ammonium sulfate solution pump on the ammonium sulfate solution discharge pipeline, the end of ammonium sulfate solution discharge pipeline extends to ammonium sulfate tank area, the outlet end of ammonium sulfate solution pump is equipped with a branch pipeline, this branch pipeline is connected with the feed inlet on the top of filtrate tank through regulating valve, the bottom outlet of filtrate tank is connected with the inlet of clarification mechanism through filtrate pump. The catalyst settlement system is stable in operation, and the downstream device operation cycle is prolonged.

The additive manufacturing method of the optical element provided in the application comprises the following steps: calculating the structure parameters of an axial gradient refractive index lens; establishing a UG three-dimensional model according to the structure parameters; adopting the forming slurry to perform light curing forming on the UG three-dimensional model; performing debinding treatment on the UG three-dimensional model after the light curing forming; performing sintering treatment on the green body after the debinding; and cleaning the sintered green body to obtain the lens with variable refractive index. The additive manufacturing method of the optical element provided in the application realizes the processing and manufacturing of the variable refractive index lens through DLP light curing 3D printing, improves the processing speed under the premise of ensuring the processing precision, and has the advantages of fast forming speed, small feature size and macro-micro cross-scale forming capability.

The utility model relates to the technical field of hollow slab extrusion forming, in particular to a hollow slab extrusion forming machine for municipal house building, which comprises two fixing plates, and a conveying belt is arranged between the two fixing plates. The extrusion mechanism capable of performing rapid extrusion forming on the hollow plate is arranged at the top end of the fixed plate; the extrusion mechanism and the forming assembly are arranged, an electric push rod drives a mounting plate to move downwards to extrude a hollow plate, fan blades in the mounting plate rotate to blow out hot air, the hot air is heated through a heating block and blown into an air guide groove in a mold, and the mounting plate can be heated when the hollow plate is extruded by the mounting plate; hot air is blown into the air guide groove to heat the mold, the hollow plate can be conveniently heated, the heat gathering plate can gather heat and rapidly heat the hollow plate, the cooling pipes are evenly distributed on the inner wall of the mold so that the hollow plate can be cooled, the hollow plate can be rapidly extruded and formed, and the working efficiency of the device is improved.

The utility model relates to an automobile reading lamp panel injection mold, which comprises a first fixing plate, a fixed mold, a movable mold, an ejection mechanism and a second fixing plate which are sequentially arranged, a fixed mold core is arranged in the fixed mold, a profiling groove is arranged at one end, close to the movable mold, in the fixed mold core, a movable mold core is arranged in the movable mold, a profiling convex block is arranged in the movable mold core, and the ejection mechanism is arranged in the second fixing plate. The fixed mold core and the movable mold core are respectively provided with a profiling assembly, the fixed mold and the fixed mold core are internally provided with a pouring mechanism communicated with the forming cavity, the ejection mechanism is used for ejecting a panel in the forming cavity out of the mold, and the fixed mold and the movable mold are fixedly provided with a plurality of extruding assemblies used for fixing the movable mold core and the fixed mold core. The profiling assembly comprises a plurality of first profiling blocks and second profiling blocks matched with the forming cavities, and a fixing block in sliding fit is arranged at one end of the profiling assembly. According to the injection mold, the accuracy of injection molding of the panel is greatly improved, and the phenomenon that parts in the mold fall off in the injection molding process can be prevented.

The invention discloses a U-shaped cross-section annular cavity spinning device and a spinning method. The device comprises a frame, a spinning punch and a spinning die. The spinning punch and the spinning die are both connected to the frame. The spinning punch comprises a support beam and a rotatable rolling wheel arranged on the support beam. At least two rolling wheels are evenly arranged. The rolling wheel serves as a mold protruding part of the spinning punch. The rolling wheel is arranged on an annular ring track. The spinning die is fixedly provided with a cavity mold. The cavity mold is provided with an open annular space. The opening of the annular space faces the spinning punch. The annular space serves as a mold recessed part of the spinning die. The cavity mold is used for fixedly supporting a workpiece. The spinning punch or the spinning die is connected to a driving device. The spinning punch and the spinning die rotate relatively and gradually approach each other. The U-shaped cross-section annular cavity is gradually spun down. The required pressure is small, the equipment investment is small, and the forming speed is fast.

The utility model discloses a carton sticking machine for carton processing, which belongs to the technical field of carton sticking machines and comprises a processing table, an adjusting component is arranged at the top of the processing table, a support plate is arranged on one side of the adjusting component, a plurality of adsorption discs are fixedly connected to the top of the support plate, and the adjusting component comprises two adjusting lead screws. Sliding grooves are formed in the two sides of the top of the machining table correspondingly, and adjusting lead screws are rotationally connected into the sliding grooves. By arranging the adjusting assembly, a worker drives the adjusting lead screw seat to rotate through the knob, the adjusting lead screw drives the supporting plate to rotate around the connecting seat through the second lead screw seat and the connecting rod, so that the angle of the supporting plate is changed, and the supporting plate drives the two paperboards to form an included angle through the adsorption disc; and the angle between the two paperboards can be adjusted according to the processing requirements, different carton processing requirements can be met, and the processing flexibility of the device is improved.

The utility model relates to the technical field of molds, and discloses a plastic part forming mold with an iron sheet bracket, which comprises an iron sheet supporting frame and a bottom mold, a clamping groove is arranged on the surface of the iron sheet supporting frame, the bottom mold is connected with the iron sheet supporting frame in a clamping manner through the clamping groove, a water tank is sleeved at the bottom of the bottom mold, and the water tank is connected with the iron sheet supporting frame in a clamping manner. The two sides of the iron sheet bearing frame are connected with a water outlet pipe and a water inlet pipe through vertical plates correspondingly, base plates are fixedly arranged on the tops of the two sides of the bottom die, and one side of the top end of the iron sheet bearing frame is connected with one of the base plates in a clamped mode through a locking assembly. The device has the advantages that the bottom die can be horizontally limited through the clamping groove and can be prevented from horizontally moving, the base plate can prevent the bottom die from falling into the water tank, the locking assembly can lock the bottom die through the base plate and can prevent the bottom die from vertically moving, the bottom die can be conveniently assembled and disassembled, and the bottom die can be conveniently taken down and maintained once being damaged.

The present application provides an aliphatic-aromatic polyester composition and a 3D printing product prepared therefrom. The present application belongs to the technical field of 3D printing materials. The aliphatic-aromatic polyester composition comprises 8-25 parts by weight of polylactic acid, 75-90 parts by weight of aliphatic-aromatic copolyester and 0-3 parts by weight of a compatibilizer; the aliphatic-aromatic copolyester comprises diacid residues and diol residues; the diacid residues comprise 72-85 mol% of terephthalic acid residues and 15-28 mol% of succinic acid residues; and the diol residues comprise at least 1,4-butanediol residues in an equimolar amount with the diacid residues. The aliphatic-aromatic polyester composition has high flexural modulus and good low-temperature toughness, is used for 3D printing, and has high printing precision.

The utility model relates to the field of pad printing machines, in particular to an automatic feeding device for a pad printing machine, which is characterized in that two groups of second telescopic rods are symmetrically mounted on one side, far away from a side plate, of the top of a worktable along the vertical direction, a storage bin is arranged above the worktable, and the output ends of the second telescopic rods are in transmission connection with the storage bin; fixing frames are installed on the inner walls of the two sides of the storage bin, a conveying belt is installed at the other ends of the fixing frames, a plurality of limiting blocks are evenly distributed on the surface of the conveying belt at equal intervals, a second pneumatic gripper is installed on each limiting block, and the ends, away from the conveying belt, of the limiting blocks are attached to the inner wall of the storage bin in a sliding mode. And an electric rotating disc is installed at the top of the workbench, the output end of the electric rotating disc is in transmission connection with a mechanical arm, and a first pneumatic grabbing clamp is installed at the other end of the mechanical arm, so that damage caused by collision of raw materials in the storage bin and the material receiving box is reduced, the working efficiency is improved, and integration of feeding and material receiving is achieved.