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25results about How to "Efficient demoulding" patented technology
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Chip production plastic packaging machine device and method
PendingCN119581373Asafe releaseEfficient demouldingSemiconductor/solid-state device manufacturingConveyor partsPlastic packagingElectric machinery
The invention relates to the field of chip production, in particular to a chip production plastic packaging machine device and method. The device comprises a conveying belt mechanism, a lower die mechanism and an upper jacking mechanism, the conveying belt mechanism comprises a rack, two belt rollers rotationally arranged on the rack, a conveying belt arranged on the two belt rollers in a sleeving mode and a first motor arranged on the rack and connected with one belt roller in a driving mode, and multiple rows of through hole sets are formed in the conveying belt in the annular direction at equal intervals. Each row of through hole group comprises a plurality of through holes which are distributed at equal intervals in the width direction of the conveying belt; the lower mold mechanism comprises a plurality of lower mold assemblies which are distributed at the through holes in a one-to-one correspondence manner; each lower mold assembly comprises a connecting table arranged on the conveying belt, a rotating shaft rotationally arranged on the connecting table, a lower mold which is arranged on the rotating shaft and is provided with a plastic packaging groove, and a demolding assembly arranged on the lower mold; the jacking mechanism is in transmission connection with one belt roller and intermittently jacks the demolding assemblies distributed in rows. According to the invention, the plastic package chip is conveniently and safely demoulded in a jacking manner.
Owner:HEFEI HENGSHUO SEMICON CO LTD
Hot press molding process for metal product manufacturing
InactiveCN119657719Aimprove product qualityimprove consistencyShaping toolsStripping-off devicesMetallic materialsMechanical property
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.
Owner:JIANGXI AITE MASS TRANSFER TECH CO LTD
Composite material launch canister manufacturing device
ActiveCN119141919AGuarantee the molding effect of external dimensionsGuaranteed molding dimensional accuracyStructural engineeringContact position
The invention discloses a composite material launch canister manufacturing device, and relates to the technical field of forming equipment. The forming mold comprises a core mold and an outer mold; the core mold is sleeved with the outer mold, and an annular gap between the core mold and the outer mold forms a launch canister workpiece forming gap; the outer die comprises a base, an upper die, a lower die and two side dies; a placing groove is formed in the base, and the lower ends of the two side dies and the lower die are arranged in the placing groove; the connecting positions of the upper die and the two side dies, the connecting positions of the lower die and the two side dies and the contact positions of the side dies and the base are all in an inclined plane mode. A plurality of first mounting holes are formed in the two sides of the upper die respectively, the first mounting holes are sequentially distributed in the length direction of the upper die, second mounting holes are formed in the positions, corresponding to the first mounting holes, of the base, and compression bolts are connected into the first mounting holes and the corresponding second mounting holes. The workpiece manufacturing process is simpler and more convenient, the forming size precision of the launch canister workpiece can be guaranteed, and demolding is convenient.
Owner:AVIC HUIYANG AVIATION PROPELLER
Powder metallurgy preparation device and method of foam metal catalytic bed for hydrogen production
The invention discloses a device and method for preparing a foam metal catalytic bed for hydrogen production through a powder metallurgy method, and relates to the technical field of metal powder manufacturing products, the device comprises a lower bottom plate, an upper bottom plate, an inner straight mold, an inner inclined mold, a heat exchange tube set, an outer mold, an outer ring, a cover plate, an inner ring and the like; a closed space defined by the lower bottom plate, the inner straight die, the inner inclined die, the heat exchange tube set, the outer die and the cover plate is a forming inner cavity. A mixture of the metal powder and the foaming agent is foamed and sintered in the forming inner cavity; the inner side cylindrical surface and the outer side cylindrical surface of the forming inner cavity are an inner vertical surface and an outer vertical surface respectively, the inner vertical surface and the outer vertical surface are uneven special-shaped curved surfaces of which the surfaces change periodically, and the surface area is obviously increased compared with the cylindrical surfaces; the heat exchange tube sets are consumption parts, the heat exchange tube sets and the sintered foam metal jointly form a foam metal catalytic bed assembly, and one heat exchange tube set needs to be consumed every time the foam metal is sintered; and the two ends of the heat exchange tube group are through, so that the mixed material in the forming inner cavity is heated more uniformly during foaming and sintering.
Owner:SHANNXI DINGJI ENERGY TECH CO LTD
A powder metallurgy preparation device and method for a foamed metal catalyst bed for hydrogen production
The invention discloses a powder metallurgy preparation device and method for a foamed metal catalyst bed for hydrogen production, and relates to the technical field of products made from metal powder, comprising a lower base plate, an upper base plate, an inner straight mold, an inner oblique mold, a heat exchange tube group, an outer mold, an outer ring, a cover plate, an inner ring, etc.; a closed space surrounded by the lower base plate, the inner straight mold, the inner oblique mold, the heat exchange tube group, the outer mold and the cover plate is a molding inner cavity; a mixture of metal powder and a foaming agent is foamed and sintered in the molding inner cavity; the inner cylindrical surface and the outer cylindrical surface of the molding inner cavity are the inner facade and the outer facade respectively, and the inner facade and the outer facade are both irregular curved surfaces with periodic changes and uneven surfaces, and the surface area is significantly increased compared with the cylindrical surface; the heat exchange tube group is a consumable part, and together with the sintered foamed metal, a foamed metal catalyst bed assembly is formed, and each time the foamed metal is sintered, a heat exchange tube group is consumed; both ends of the heat exchange tube group are transparent, so that the mixture in the molding inner cavity is heated more evenly during foaming and sintering.
Owner:SHANNXI DINGJI ENERGY TECH CO LTD
Stamping device for display backboard production
ActiveCN222268406UImprove stamping efficiencyImprove stamping qualityShaping toolsMetal-working feeding devicesDisplay deviceMold removal
The utility model relates to the technical field of display backboard production, in particular to a stamping device for display backboard production, which comprises a stamping base, the top of the stamping base is fixedly connected with a stamping main frame, the bottom of the stamping base is fixedly connected with supporting legs, and a scraping component I is arranged above the stamping base; the first edge scraping assembly comprises first lowering grooves, the first lowering grooves are formed in the front side and the rear side of the top of the stamping base, and second lowering grooves are formed in the left side and the right side of the top of the stamping base. According to the stamping device for display backboard production, by installing the first edge scraping assembly and the second edge scraping assembly, after stamping is completed, leftover materials formed outside a die after stamping can be effectively cut off in time, and efficient demolding can be achieved through cooperation of the force, pushing the leftover materials downwards, of a side cleaning plate and upward movement of an upper die; the punching efficiency and the punching quality of the punching device are greatly improved, and the practicability of the device during use is improved.
Owner:BEIJING MOWEI TECHNOLOGY CO LTD
A demolding device for a rectangular ring mold
This utility model discloses a demolding device for a rectangular ring mold, specifically relating to the field of rectangular ring mold technology. It includes a main frame, on which a first driving mechanism is mounted, and an ejector mechanism is connected. A casting mechanism is mounted on the main frame, containing a mold core. A driving system is also mounted on the main frame. The casting mechanism includes a first template, a second template, a third template, and a fourth template. The mold core includes a first mold core, a second mold core, and a third mold core. The first mold core has an opening. A protrusion is fixedly mounted on the bottom surface of the second mold core. The first mold core is mounted on the second template. The second mold core is mounted on the third template. The third mold core is mounted on the fourth template. As a further embodiment of this utility model, the first driving mechanism includes a first cylinder, which is fixedly mounted on the bottom surface of the main frame. Using this structure, rapid and stable demolding of the rectangular ring mold can be achieved.
Owner:ANHUI YAXINKE SEALING TECH CO LTD
Television backboard punch forming device
ActiveCN121972551AInhibition of collapseSuppress cantilever tremorShaping toolsMetal-working feeding devicesStampingStructural engineering
The invention relates to the technical field of stamping, and discloses a television backboard stamping forming device which comprises a stamping device, an upper die base and a lower die base are arranged in the stamping device, a main die core is fixedly arranged in the center of the top end of the lower die base, and a floating platform is arranged above the lower die base. And a limiting platform is arranged at the position, corresponding to the floating platform, of the bottom end of the upper die base, a plurality of sets of driving blocks are fixed to the bottom end of the upper die base, wedge-shaped driving mechanisms matched with the driving blocks are arranged in the lower die base, the top ends of clamping columns are elastically connected with the floating platform through auxiliary rods, and the auxiliary rods are sleeved with second springs. Through auxiliary supporting of the floating platform, feeding vibration can be effectively weakened, then the wedge-shaped mechanism is in linkage for receding, the cracking risk is reduced, then the floating platform makes contact with ejection, ejection traces are effectively reduced, vacuum breaking is facilitated, full-process pure mechanical linkage is achieved, errors are remarkably reduced, and the control process is simplified.
Owner:NANJING STILLAND MASCH TECH CO LTD
End socket stamping equipment convenient to demould
ActiveCN224181928UControl movement at the right timeGood to fall intoStripping-off devicesHydraulic cylinderStamping
The utility model discloses end socket stamping equipment convenient to demould. The end socket stamping equipment comprises a rack; the moving table is arranged on the rack in a manner of moving up and down; the demolding ring is connected to the lower surface of the moving table through a plurality of connecting columns; the punching head hydraulic cylinder is arranged on the moving table; the punching head is arranged at the telescopic end of the punching head hydraulic cylinder; and the diameter of the punching head is matched with the inner diameter of the demolding ring, so that the punching head can just penetrate through the demolding ring when moving up and down. When the stamping head moves upwards, the end socket abuts against the demolding ring, the end socket is separated from the stamping head through the extrusion force of the demolding ring, and demolding can be conveniently and efficiently completed.
Owner:CHENGDU GUANGHONG MOLD MFG
Flexible graphite bipolar plate compression molding apparatus
The utility model relates to flexible graphite bipolar plate mould pressing forming device technical field, specifically is a kind of flexible graphite bipolar plate mould pressing forming device, including operation platform, the operation platform one side is provided with punch device body, the operation platform top is provided with sliding table, the sliding table top is provided with lower mould;The utility model is by being placed into multiple forming cavities of lower mould with multiple flexible graphite raw materials, flexible graphite raw materials are formed by stamping using punch device body, then, sliding table is removed by pulling, push rod is pushed by control cylinder, push rod is pushed multiple groups of sliding blocks using side rod, sliding block is pushed out by cooperation roller and ejector rod and pushes out block upward, so that the flexible graphite bipolar plate after forming in multiple forming cavities can be ejected, so that the flexible graphite bipolar plate after stamping can be conveniently and quickly removed, reaches the effect that flexible graphite bipolar plate is efficiently demoulded, solves the problem that flexible graphite bipolar plate mould pressing forming device demoulding is not convenient enough.
Owner:QINGDAO NANSHU TISING GRAPHITE PROD
Demoulding device for furan resin sand casting
The utility model discloses a demoulding device for furan resin sand casting, which comprises a demoulding table, an overturning table is arranged above the demoulding table, a sand box is arranged at the top of the overturning table, limiting components are arranged at the front end and the rear end of each of two sides of the overturning table, an overturning component is arranged at the top of the demoulding table, and the sand box is arranged in the overturning component. The overturning assembly comprises supporting bases fixedly connected to the two sides of the top of the demolding table through bolts, a rotating column is rotationally connected between the two supporting bases through bearings, two connecting bases are fixedly connected to the surface of the rotating column, and the tops of the connecting bases are fixedly connected with the overturning table through bolts. Through the arrangement of the limiting assembly, the sand box is stably fixed to the top of the overturning table, then through the arrangement of the overturning assembly, the overturning table and the sand box are driven to overturn together, and a sand body and a workpiece are poured into an inner cavity of the material guiding box together for demolding; therefore, the purposes of automatic clamping and fixing and labor-saving, convenient and efficient demolding can be achieved.
Owner:YANTAI XINCHAO FOUNDRY CO LTD
Electric vehicle storage box injection molding mold with sliding block inner core pulling mechanism
The utility model provides an electric vehicle storage box injection molding mold with a sliding block inner core-pulling mechanism, which comprises a supporting seat, an upper molding block is arranged at the top in a supporting cavity, the bottom of the upper molding block is connected with an inclined guide rod, the upper molding block and the inclined guide rod are integrally molded, and a lower molding block is arranged in a mounting groove; the bottom of the upper forming block and the bottom of the lower forming block are in linkage through the supporting guide rod, one end of the supporting guide rod slides in the vertical limiting groove in the supporting cavity, when the inclined guide rod obliquely pushes the upper forming block to slide upwards towards the upper portion, the lower forming block can be synchronously driven to be thrown out of the supporting cavity, and under limiting of the supporting guide rod, the lower forming block is driven to move upwards. The lower forming block and the upper forming block are staggered in a sliding mode, then the formed workpiece is moved towards the upper portion, the formed workpiece is made to be away from the lower forming block and the upper forming block, the side inner buckling claws and the lower inner buckling claws are disengaged from the interiors of the lower forming block and the upper forming block, and then efficient demolding is achieved.
Owner:ZHEJIANG HUANGYAN HUARI (GRP) CO LTD
Delayed core-pulling spraying structure
The delayed core-pulling spraying structure comprises a rear mold, an ejector sleeve pin and an insert pin, and the ejector sleeve pin penetrates through and is movably connected to the rear mold; the insert pin penetrates through and is movably connected to the ejector sleeve pin; a connector is arranged at the top of the insert pin; in a die-casting state, at least part of the peripheral wall of the connector is covered by the ejector sleeve pin; in a demolding state, the ejector pin moves downwards, so that the connector is completely exposed; a spraying channel is further arranged in the rear mold, and the spraying direction of the spraying channel corresponds to the position of the connector in the exposed state; a gap is formed between a second step in an ejector sleeve pin and a second boss in an insert pin, a rear mold drives the ejector sleeve pin to synchronously move downwards to enable a connector to be in an exposed state, and a linkage type design that a spraying hole and a spraying channel are arranged to enable the connector in the exposed state to be completely covered by spraying water sprayed out of the spraying channel is adopted. And therefore, a complete isolating membrane is formed on the outer surface of the connector, and efficient and rapid demolding of a product is facilitated.
Owner:DONGGUAN WANGJIA HARDWARE PROD CO LTD
Material-saving plastic screw lamp holder
ActiveCN224068055Ucontact stabilityincrease contactCoupling device connectionsElectric discharge tubesLight fixtureElectrically conductive
The utility model relates to the technical field of lamp equipment, in particular to a material-saving plastic screw lamp holder, which comprises a live wire conducting strip and a zero wire conducting strip, the live wire conducting strip is divided into an external connecting part and an internal connecting part, the internal connecting part adopts a three-section structure comprising an inclined surface for transition, a live wire contact part is gradually lifted through the inclined surface, and a zero wire contact part is gradually lifted through the zero wire conducting strip. The height difference from the barrel edge to the center is formed, and when the bulb is screwed in, elastic force is generated through elastic deformation of the inclined face to press an electrode of the bulb; and the zero line conducting strip adopts a double-inclined structure design, and the first inclined part and the second inclined part are symmetrically distributed in a V shape, so that the zero line contact parts form elastic deformation contact surfaces on the two sides of the cylinder wall to press the electrode of the bulb. According to the utility model, stable contact between the conducting strip and the bulb can be effectively ensured.
Owner:GUANGDONG PROVINCE LIANSU ELECTRIC CO LTD
Aluminum tube semi-continuous casting device with intelligent core breaking and method
The application discloses an aluminum pipe semi-continuous casting device with intelligent core stripping and a method, and relates to the technical field of light alloy casting. The device comprises a rack, a traction system for pulling an aluminum pipe blank, a crystallizer vibration system, a core mold vibration system, a chute unit for preheating a flow guide molten metal, a bearing plate, a bearing base, and a feedback control system for the vibration of the crystallizer and the core mold. The device adds the functions of the vibration of the crystallizer and the core rod and the mechanical sensor feedback control function on the basis of the conventional semi-continuous casting device. The crystallizer and the core rod are vibrated through the mechanical sensor feedback control to avoid core holding and efficiently strip the core, thereby ensuring the continuous casting. The device solves the problem that the aluminum pipe is difficult to strip the core from the core mold during the semi-continuous casting process, ensures the continuity of the casting, reduces the occurrence of casting accidents, and improves the production efficiency of the aluminum pipe casting.
Owner:YANSHAN UNIV
Rotary sliding tooth retreating device for injection mold
Owner:SUZHOU MINGRUN MOLD CO LTD
An injection mold for internal thread plastic gear
The present invention relates to the field of mold technology, and specifically to an internal threaded plastic gear injection mold, comprising a fixed mold and a movable mold, a rotatable threaded column is arranged in the mold groove of the movable mold, a mold splitting torque output device capable of outputting torque when the mold is split is arranged between the movable mold and the fixed mold, the mold splitting torque output device has a torque output part coaxial with the threaded column, an elastic torque connector is arranged between the torque output part and the threaded column, and the elastic torque connector is used to input flexible torque to the threaded column. The present application can generate torque during mold splitting through the mold splitting torque output device, and transmit it to the threaded column through the elastic torque connector, so that after the mold is completely split, the elastic torque connector can guide the threaded column to rotate, thereby being able to withdraw the plastic gear in the movable mold groove, thereby completing demolding, solving the problem that the existing mold requires auxiliary power when producing an internal threaded plastic gear chamber, thereby resulting in high production costs.
Owner:NINGBO MINGJING ELECTRONICS CO LTD
Motorcycle rear fender plastic part multi-slide core inclined ejector demolding injection mold
ActiveCN224738729UEfficient demoulding
Owner:HUITENG IND TECH CO LTD
A syringe molding apparatus
The application discloses a syringe processing and forming equipment and relates to the technical field of forming equipment.The syringe processing and forming equipment comprises a base frame, an outer shell fixed to the upper surface of the base frame, a moving die combining mechanism fixed to the inside of the outer shell, a demolding mechanism arranged in the moving die combining mechanism, and a feeding mechanism fixed to the upper surface of the base frame, wherein one end of the feeding mechanism is fixedly connected with the moving die combining mechanism.The moving die combining mechanism comprises a fixed plate and a connecting plate, and the fixed plate and the connecting plate are fixedly connected with the inner side of the outer shell.The moving die combining mechanism is used for combining and separating the pressing die and the feeding die, and the action is stable and accurate, thereby ensuring the forming quality of the syringe, or the demolding mechanism is used for smoothly demolding the syringe formed on the syringe forming die rod, and the demolding is efficient and the product is not damaged, or the feeding mechanism is used for realizing automatic, continuous and uniform feeding, thereby guaranteeing the production continuity and product consistency.
Owner:JIANGSU RUIYU HOSPITAL PROD CO LTD
Inductor demolding and cleaning mechanism
ActiveCN119657527AGuaranteed service lifeEfficient removalInductances/transformers/magnets manufactureCleaning using toolsInductorBrush
The invention relates to the technical field of inductor manufacturing equipment, in particular to an inductor demolding and cleaning mechanism which comprises a demolding module and a cleaning module, the cleaning module is in butt joint with the demolding module, and the cleaning module comprises a base, an upper brush roller, a lower brush roller, a driving assembly, a support and an overturning platform. The support and the overturning platform are provided with cleaning openings located between the upper brush roller and the lower brush roller. A middle template track and a base track are arranged on the bracket and the overturning platform, and the base track is positioned below the middle template track; a jacking structure is connected to the lower portion of the overturning platform, a first moving structure is further arranged on the base, and a dust collection assembly is further arranged on the base. The demolding module and the cleaning module are in tight butt joint, cleaning can be conducted immediately after mold demolding, it is guaranteed that the surface of the mold obtained after demolding is free of dust and residues, and therefore the production efficiency is improved.
Owner:SHENZHEN HENGYUE ELECTROMECHANICAL EQUIP CO LTD
Automatic demolding structure of multi-cavity commander box mold
ActiveCN222495267Uimprove aestheticsEfficient demouldingStructural engineeringMechanical engineering
Owner:LINHAI WEIXING NEW BUILDING MATERIALS CO LTD
Fluorescent visual composite material molding process release agent and preparation method thereof
The invention discloses a fluorescent visual composite material molding process release agent and a preparation method thereof. Vegetable oil containing conjugated double bonds and dienophile benzoquinone containing a benzene ring are selected to be subjected to a Diels-Alder reaction, then an electron donating group is introduced to the introduced benzene ring in a chemical modification mode, and a substance obtained through the reaction and having a special structure is mixed with a resin related auxiliary agent according to a certain proportion. Therefore, the internal release agent with the fluorescence property is prepared; the release agent is very excellent in release performance, more importantly, the release agent can emit fluorescence under exciting light with a specific wavelength, the residual quantity of the release agent on a product can be visually detected through the fluorescence characteristic, the residual condition of the release agent on the product can be conveniently and visually judged, and the release agent is of great significance in quality control and product safety evaluation.
Owner:SHANGHAI ZHONGJU TONGSHUO MATERIALS CO LTD
PET plastic bottle blank injection mold and use method
ActiveCN119388696Aavoid damageEfficient demouldingCleaning using gasesMechanical engineeringMold removal
The invention belongs to the technical field of plastic bottle processing, and particularly relates to a PET plastic bottle blank injection mold and a using method.The PET plastic bottle blank injection mold comprises a base, a forming mold base is fixed to one side of the top of the base, a movable plate is installed on the other side of the top of the base, and a pushing plate is arranged on one side wall of the movable plate; a plurality of evenly-distributed fixing rings of a double-layer hollow structure are fixed to the outer wall of the pushing plate, a plurality of evenly-distributed die heads are fixed to one side wall of the movable plate and movably penetrate through the pushing plate and the fixing rings, and a liquid pump is fixedly installed at the top of the movable plate. A second electric push rod drives a push plate to move, after a formed blank is pushed and demolded through a fixing ring, in the back moving process, a liquid pump is used for exhausting a demolding agent, the demolding agent is guided into a cavity of the fixing ring through a guide pipe, and then the demolding agent can be evenly sprayed to the surface of a mold head along holes; and therefore, a release agent can be sprayed before injection molding each time, and the situation that a blank body is damaged during demolding is avoided.
Owner:CHENGDU YOUYUAN PLASTIC IND CO LTD
Demolding mechanism and injection mold
ActiveCN222451243USolve the difficulty of demouldingachieve separationMechanical engineeringMold removal
The utility model relates to a demolding mechanism and an injection mold and relates to the technical field of molds, the demolding mechanism comprises a first sliding block and a wedge block, the first sliding block and the wedge block are arranged on the two sides of a cavity to form the side wall of the cavity, and the first sliding block and the wedge block are provided with structures corresponding to inverted buckles of a product; the elastic piece is arranged on the fixed mold and is connected with the first sliding block; the linkage piece is connected with the first sliding block and the wedge block; one end of the binding block is fixed on the movable mold, the other end of the binding block is arranged on the fixed mold in a penetrating manner and penetrates through the first sliding block, and the binding block abuts against the first sliding block and abuts against the linkage piece; by means of the synergistic effect of the beam block, the first sliding block, the wedge block, the linkage piece and the elastic piece, automation and continuity of the demolding process are achieved, the problem that demolding of a plastic product of a multi-inverted-buckle structure is difficult is solved, separation of multiple inverted buckles can be effectively achieved, and therefore the demolding efficiency is improved.
Owner:SUZHOU SINGMED MEDICAL DEVICE SCI & TECH LTD
Triaxial test sample preparation device and sample preparation and demoulding method thereof
ActiveCN115165486Beasy to moveimprove accuracyPreparing sample for investigationTriaxial shear testTest frame
The present invention provides a triaxial test sample preparation device and a sample preparation and demoulding method thereof, comprising a movable test frame, a clamping assembly arranged in the middle of the test frame for fixing a cylinder for sample preparation, and a pressure assembly arranged at both ends of the test frame for compressing the sample preparation material in the cylinder by synchronous telescopic means, wherein the pressure assembly is connected to a controller on the test frame through a signal to control the stroke and telescopic speed. The present invention solves the problems of low sample preparation accuracy, insufficient sample preparation effect, and large sample preparation demoulding damage existing in the prior art by controlling the rotation of a stepper motor, synchronous compaction of the pressure assemblies at both ends, and ejection and demoulding of the pressure assembly at the bottom.
Owner:CHINA THREE GORGES UNIV