1212results about How to "Avoid problems" patented technology

The invention relates to a method and device for generating a unified bid inviting file, electronic equipment and a storage medium. The method for generating the unified bid invitation file comprises the following steps: S1, designing a bid invitation file structured processing model, and setting the bid invitation file according to a model structure of modules and attributes; s2, designing an intelligent learning model of the bid invitation file, extracting feature vectors from the preprocessed data by utilizing a machine learning model, establishing a rule base conforming to business logic, integrating rules and policies of bid invitation parties, ensuring the compliance of the bid invitation file, and following corresponding laws and regulations and standards; and S3, designing a bid invitation file intelligent generation model, and generating a bid invitation file according to a purchase demand, a technical specification book and the like. According to the method for generating the unified bid invitation file, different types of bid invitation file model libraries can be established according to different types of projects; common problems and terms in the historical bid invitation file are analyzed through artificial intelligence, intelligent prompting and early warning are performed in the new bid invitation file, and benefits of enterprises are guaranteed.

The invention discloses a surface milling device for mold machining and a machining method of the surface milling device, and relates to the technical field of mold machining, the surface milling device comprises a base, a supporting frame is fixedly mounted at the top of the base, an electric cross sliding table is arranged on the side, located on the supporting frame, of the base, and the surface milling device further comprises an electric push rod fixedly mounted on one side of the top of the supporting frame; the movable end of the electric push rod penetrates through the supporting frame and is fixedly provided with a movable plate, guide rods are symmetrically installed on the two sides of the top of the movable plate, the two guide rods are both slidably connected with the supporting frame, meanwhile, a driving motor is fixedly installed in the center of the top of the movable plate, and a chuck is fixedly installed at the output end of the driving motor; by means of the cooling device, a tool can be evenly cooled in the mold milling process, the situation that the service life of the tool is affected by overheating of the tool can be avoided, waste of cooling liquid can be reduced while the cooling liquid is sprayed, the cooling liquid is saved, and practicability is improved.

The invention provides a limb fracture rapid reduction external fixing device based on an augmented reality technology, and belongs to the technical field of fracture reduction fixing devices. The limiting component comprises a connecting frame and a connecting arc plate, a fixing pressing plate is arranged on the outer wall of the connecting frame, a positioning clamping plate is arranged at the bottom of the fixing pressing plate, a plurality of positioning clamping grooves are formed in the connecting frame and the connecting shaft, and the positioning clamping plate is fixedly connected to the positioning clamping grooves in a sleeving mode. By arranging the reset arc plate and the limiting part, the reset arc plate can be attached to the curved surface of the limb, a gap between the reset arc plate and the limb is avoided, and meanwhile the angle between the connecting frame and the connecting arc plate can be locked under the action of the fixing pressing plate; parameters between the reduction clamping plate and the movable clamping plate can be set according to use requirements, when a fracture part is subjected to reduction, the fracture part can be rapidly subjected to reduction by means of the positions of the reduction clamping plate and the movable clamping plate with the set parameters, and the fracture part is clamped and fixed.

The invention belongs to the technical field of waste gas detection, and particularly relates to waste gas detection equipment which comprises a detection box. A waste gas analyzer is mounted at the top of the detection box; a detection probe is mounted at the bottom of the waste gas analyzer; a detection cylinder is arranged in the middle of the detection box; a mounting block is fixedly connected to an inner cavity of the detection cylinder and located at the top of the detection cylinder; an air outlet assembly is arranged below the mounting block; two guide cylinders, namely a first guide cylinder and a second guide cylinder, are fixedly connected to two sides of the detection cylinder; air grooves are formed in the two sides of the mounting block and located in the side wall of the detection cylinder. An air pump is arranged below the first guide cylinder in an initial state and is positioned at the bottom of the detection box; a circular groove is formed in the lower part of the second guide cylinder in an initial state; a collecting assembly is mounted in the circular groove; by arranging the guide cylinder and the detection cylinder, residual gas in the detection box can be discharged, and the situation that newly sucked waste gas is mixed with original waste gas, and consequently the waste gas detection precision is affected is avoided.

The invention discloses a display module, a manufacturing method thereof and a display device. The display module comprises a composite supporting layer, a display panel and a protection piece, the display panel comprises a first body, a second body and a bending part connecting the first body and the second body, the first body is arranged on the first side of the composite supporting layer, and the second body is arranged on the second side, opposite to the first side, of the composite supporting layer. The protection piece comprises a first protection part and a second protection part which are connected with each other; according to the application, the first protection part is firstly arranged in the enclosed space between the bending part and the composite supporting layer, and then the second protection part is arranged outside the enclosed space, so that the gelation rate of the first protection part is different from that of the second protection part, and the first protection part and the second protection part are respectively prepared; according to the display module, the problem that the filling rates of the protective material inside and outside the bending section are different is solved, bubbles in the bending section of the display module are avoided, and the stability of a product is improved.

The invention relates to the field of copper-clad plate press-fit processing, in particular to a copper-clad plate forming processing device and method.The copper-clad plate forming processing device comprises a supporting table of a hollow structure, a lower layer pressing plate is fixedly connected to the top of the supporting table, and a portal frame stretching across the front side and the rear side of the lower layer pressing plate is fixedly installed at the top of the supporting table; a hydraulic mechanism located above the supporting table is installed at the bottom of the portal frame, and a correction mechanism located on the side face of the lower pressing plate and a multi-stage laminating mechanism located on the top of the lower pressing plate are installed at the bottom of the hydraulic mechanism. According to the invention, the first-stage lamination mechanism and the second-stage lamination mechanism are matched to carry out multi-stage lamination on each layer of stacked copper-clad plates, and the second-stage lamination mechanism is firstly utilized to carry out multi-point pre-compaction on the copper-clad plates, so that air among the layers can be discharged from gaps among compaction points; and then the primary laminating mechanism performs high-temperature heating lamination on the copper-clad plate, so that bubbles are prevented from appearing in the copper-clad plate, and the firmness and quality of lamination molding of the copper-clad plate are improved.

The invention discloses an anesthesia puncture outfit for a surgical patient, and relates to the technical field of anesthesia puncture outfit, the anesthesia puncture outfit comprises a puncture handpiece, the puncture handpiece is provided with a puncture needle sheath; an anesthesia administration part is mounted on the puncture handpiece; the anesthesia administration part is used for sliding on the puncture needle sheath piece; the puncture needle sheath piece is used for guiding the anesthesia administration part; a bubble removing guide piece is mounted on the puncture handpiece; the bubble removing guide piece is used for exhausting; a sampling sealing piece is mounted on the defoaming guide piece; the anesthesia administration part can be matched with a puncture needle sheath piece, a doctor can conveniently and rapidly conduct puncture anesthesia work, the structure is easy to operate, the doctor can more conveniently locate the arachnoid, the accuracy of medicine injection of the subarachnoid space is guaranteed, and the problems that an existing anesthesia puncture outfit for a surgical patient is inconvenient to prompt the doctor to penetrate through the subarachnoid space, and the working efficiency is high are solved. And excessive puncture is easily caused.

The invention relates to the field of shower equipment, and provides a foaming shower which comprises a shell, an electromagnetic valve, a plurality of liquid storage tanks, a liquid pump, a clear water inlet assembly, a function control assembly, a foaming assembly and a water outlet assembly. The function control assembly comprises a water inlet shell, a function control valve element and a plurality of contact induction devices. The output end of the clear water inlet assembly is connected with the input end of the water inlet shell, the clear water output end of the water inlet shell is connected with the clear water port of the water outlet assembly, and the foam water output end of the water inlet shell is connected with the water inlet port of the foaming assembly; the function control valve element is provided with a trigger block, the function control valve element drives the trigger block to rotate and can trigger the contact induction devices, and the contact induction devices are connected with the electromagnetic valves in an electric control mode. The plurality of liquid storage tanks are respectively connected with the input end of the electromagnetic valve; the problems that an existing shower is limited in foam type and number, foam remains when clear water is converted, and the use experience is poor can be effectively solved.

The invention provides a formaldehyde-free high-strength moisture-proof shaving board and a preparation method thereof. According to the method, the surface layer material corn straw wood shavings of the shaving board are compounded in different sizes, modified isocyanate is selected as an adhesive of the surface layer material, nano-copper particles are added as an additive, meanwhile, poplar wood shavings are used as a core layer material, and a magnesium adhesive is matched, so that the prepared shaving board is extremely low in formaldehyde release amount, high in strength and high in toughness. The static bending intensity of the shaving board in use is effectively improved, and the thickness swelling rate of water absorption is reduced, so that the formaldehyde-free high-strength moisture-proof shaving board is obtained.

The invention relates to the technical field of steel structure spraying, and discloses a steel structure paint spraying device which is characterized in that a dust cover is mounted on the upper surface of a supporting seat; the overturning assembly is rotatably arranged on the side wall face of the dust cover, a mounting opening is formed in the side wall of the dust cover, the overturning assembly is arranged corresponding to the mounting opening, the overturning assembly is provided with a clamping structure, and the clamping structure is suitable for clamping a steel structure; the spraying machine is arranged in the dustproof cover, a feeding port is formed in the spraying machine, a material storage structure is arranged on the outer side of the top of the dustproof cover, and the material storage structure communicates with the feeding port; the driving assembly is in transmission connection with the spraying machine; and the linkage assembly is suitable for driving the turnover assembly to rotate under the driving of the driving assembly. According to the paint spraying device for the steel structure, the overturning assembly is arranged to fix the steel structure, the driving assembly is used for driving the linkage assembly to move, and the overturning assembly is further driven to overturn, so that the steel structure does not need to be overturned manually, the paint surface is prevented from being scratched manually, manpower is saved, and the spraying efficiency of the paint spraying device for the steel structure is improved.

The invention discloses an organic compound containing phenanthroline and phosphine substituent and an organic electroluminescent device containing the same. The organic compound is selected from a structural general formula as shown in a formula I in the specification. By introducing an aryl substituted phenanthroline structure into the structure, a tetradentate ligand coordinated with rare earth metal can be formed, formation of a more stable 8-coordination complex is facilitated, the stability of an n-CGL layer is improved, and by using a phosphine oxide structure in the structure, the limiting capability on the rare earth metal is improved, and the drift voltage is improved. In addition, direct connection between phosphine atoms and large conjugated substituents such as naphthalene is avoided, or larger polycyclic aromatic hydrocarbons such as anthracene, anthracene and pyrene in molecules are avoided, so that the coordination capability of a phosphine-oxygen structure to metals can be enhanced. The invention also finds that when the compound of the formula I structure is used as an n-CGL material and the compound of the formula II structure is used as an electron transport layer material in a combined manner, the injection barrier between interfaces can be reduced, and the driving voltage of the organic electroluminescent device is further reduced. # imgabs0 #

The utility model relates to the technical field of vacuum fixing devices, in particular to a display panel vacuum fixing device. According to the technical scheme, the device comprises a case and further comprises a fixing mechanism installed at the bottom of the case in a sliding mode and used for rapidly fixing a display panel, a pressing assembly fixedly installed at the top of the case and used for sealing and evenly applying pressure to the display panel located on the fixing mechanism, and a vacuum pump installed on the top of the case and used for sealing the display panel located on the fixing mechanism. The vacuum pump is installed on the top of the machine box and used for vacuumizing the space between the fixing assembly and the pressing assembly. The liquid crystal display screen and the touch screen are prevented from being misplaced through the fixing mechanism, the touch screen and the liquid crystal display screen are prevented from being not firmly fixed through the pressing assembly, bubbles are prevented from being generated between the liquid crystal display screen and the touch screen through the vacuum pump, a liquid crystal layer is prevented from being incapable of correctly displaying images, and the accuracy of a touch sensor is prevented from being interfered.

The invention discloses an injection mold for processing a thin-wall plastic product, and belongs to the field of injection molds, the injection mold comprises a female mold and a male mold attached to the female mold after moving, a material returning part is arranged in the female mold and the male mold, the material returning part comprises a fixed cylinder fixedly connected in the female mold, a guide groove is formed in the fixed cylinder, and the guide groove is matched with the guide groove. And the number of the guide grooves is two, the right half parts of the two guide grooves are both formed in a spiral shape, a rotating rod is slidably connected to the interior of the fixed cylinder, and the protruding positions of the outer side of the rotating rod are slidably connected to the interiors of the two guide grooves correspondingly. Due to the fact that the push rod used for material returning can rotate slowly in the process of pushing the plastic part, the plastic part can be separated from the surface of the guide column more easily, damage to the plastic part in the rotating process of the push rod can be avoided through slow rotation, defective products of the plastic part are prevented, and then the production quality of the plastic part is guaranteed.

The invention provides a display module, a preparation method of the display module and a display device.The display module comprises a display panel which comprises a display area, a binding area and a bending area located between the display area and the binding area; the polaroid is located on one side of the display panel and located in the display area; the bending protection layer is located on the same side of the display panel and the polaroid and is at least located in the bending area; wherein the side, close to the polaroid, of the bending protection layer makes contact with the polaroid, and in the direction perpendicular to the plane where the display panel is located, the contact height of the bending protection layer and the polaroid is smaller than or equal to the thickness of the bending protection layer; or, a gap is formed between the bending protection layer and the polaroid, and the inclination angle of the side, close to the polaroid, of the bending protection layer is smaller than the inclination angle of the side, away from the polaroid, of the bending protection layer. According to the invention, bubbles of the display module during optical cement lamination can be avoided.

The utility model relates to a waste removing device based on machine vision, which belongs to the technical field of waste removing and comprises a conveying component, a vision device and a removing component, the removing component comprises a bottom cylinder, a table top cylinder, a moving frame and a push plate, the conveying component is a roller conveyor, the bottom cylinder is arranged below a roller of the roller conveyor, and the table top cylinder is arranged below the moving frame. A moving frame is installed on an output shaft of the bottom air cylinder, a push plate is installed on an output shaft of the table top air cylinder, a collecting frame is arranged on one side of the conveying assembly, a plurality of rolling shafts are arranged on the collecting frame in an inclined mode, products are conveyed through the conveying assembly, the visual device detects appearance defects such as packaging box damage of the products, and the weighing assembly detects the weight. When the products are removed, a bottom air cylinder drives a moving frame to move, the products are moved to the edge of the conveying assembly, then a table top air cylinder is started, and the products are pushed to a collecting frame through a push plate to be collected.

The utility model discloses a three-knife sealing liquid tank, which particularly relates to the field of coating processing devices and comprises a base, an anilox roller is arranged on one side of the base, a sealing liquid tank is arranged between the base and the anilox roller, a power device is arranged on one side, close to the sealing liquid tank, of the base, and a sliding device is arranged at the bottom of the sealing liquid tank. And an exhaust hole is formed in the top of the sealing liquid tank. According to the utility model, the wall body on one side of the anilox roller and the wall body of the sealing liquid tank can form a sealing structure through the matching of the lower scraper and the upper scraper, so that when the concave pit on the surface of the anilox roller corresponds to the inner cavity of the sealing liquid tank, liquid enters the concave pit, and the liquid is adhered to the anilox roller through the middle scraper; and when the concave pit corresponds to the upper cavity, the concave pit can be completely filled with the liquid, so that the coating effect is improved, and the situation that the concave pit is filled with the liquid and the product quality is influenced due to the fact that the concave pit is filled with the gas is avoided.

The invention provides an air knife device for PCB air drying, and relates to the field of printed circuit boards, the air knife device comprises an air inlet pipe, the air inlet pipe is fixedly connected with an air knife blocking frame, the air knife blocking frame is provided with an air outlet frame, the air outlet frame is internally provided with an air knife adjusting module, the top of the air outlet frame is provided with an air knife opening and two round holes, and the air knife opening and the two round holes are communicated with each other. Mounting modules are arranged on the outer walls of the air knife blocking frame and the air outlet frame, and the outer wall of the air inlet pipe is fixedly connected with a connecting plate. According to the air knife device, the soft air opening plate is adopted for integrally adjusting and changing the adjusting air opening, and the problems of a traditional air knife device can be avoided by integrally adjusting the adjusting air opening, that is, the air outlet of the area is prevented from being deformed when a single bolt is adjusted; and the air outlet uniformity is ensured by avoiding the deformation of the air outlet, so that the air drying effect and the air drying quality of the PCB are improved.

The invention relates to the technical field of section steel welding, in particular to a cold-formed section steel forming and welding method which comprises the following steps: S1, cleaning a welding position and nearby parts of cold-formed section steel, preheating the welding position by adopting a low-voltage high-current resistance heating mode after cleaning, and after the preheating treatment is finished, welding the cold-formed section steel by adopting a low-voltage high-current resistance heating mode; a soldering flux is smeared on the welding position, and a welding gun is used for conducting welding operation on the welding position; and S2, continuously collecting weld joint images through an industrial camera, fitting image data to obtain a surface contour image of a weld joint area, performing three-dimensional reconstruction on the surface contour image to obtain three-dimensional point cloud data of the weld joint area, evaluating the quality of the weld joint according to the three-dimensional point cloud data, and performing repair welding treatment on unqualified weld joints according to an evaluation result to obtain a repair welding result. According to the method, the problems that the welding effect is poor and the welding quality cannot be evaluated when the cold-formed section steel is welded in the prior art can be effectively solved.

The invention discloses double-layer cross-linked artificial matrigel and an application method of the double-layer cross-linked artificial matrigel in a small intestine micro-physiological system. Low-concentration calcium ions are adopted for primary crosslinking to form a soft inner layer structure, and then high-concentration calcium ions are used for secondary crosslinking to improve the overall rigidity. The matrigel is used for dynamic culture of small intestine organoid and is combined with a micro-fluidic chip to form a small intestine micro-physiological system. In the system, the digestive absorption process of the small intestine is dynamically simulated by controlling the flow ratio and rate of digestive fluid and culture fluid. Compared with the traditional natural matrigel, the matrigel disclosed by the invention has more appropriate mechanical strength and structural stability, supports long-term growth of the organoids, and improves the multiplication capacity, tight connection and structural integrity of the organoids in an in-vitro environment. The method can be used for researching intestinal diseases, food digestion and drug absorption, and is an in-vitro digestion simulation platform with high biocompatibility and stability.

The invention relates to the technical field of artificial intelligence, in particular to an intelligent large-screen multi-round dialogue linkage method based on a large model. A user can control the intelligent large screen anytime and anywhere through the mobile phone without being limited by time and equipment operation. Compared with a traditional interaction mode, the user experience is more natural and convenient. A two-dimensional code generated by an intelligent large screen is scanned through a mobile phone program, a safe interaction channel is established through a WSS protocol of Websocket, and multi-round dialogue control is performed by using a large model.

The invention discloses eye drops containing L-ergothioneine and a preparation method of the eye drops. The eye drops are prepared from the following components in parts by weight: 0.0015 to 15 parts of L-ergothioneine, 0.001 to 0.01 part of a bacteriostatic agent, 0.05 to 15 parts of a buffering agent and the balance of normal saline, and the pH value of the eye drops is 5.0 to 7.0. Experiments show that L-ergothioneine can prevent and reverse denaturation of crystalline lens protein, the prepared eye drops containing L-ergothioneine can prevent and reduce opacity of crystalline lens protein, and the prevention and treatment effects on cataract are better than those of existing eye drops.

The utility model discloses a throttle valve easy to assemble, which comprises a shell, a valve cavity is arranged in the shell, a rotatable valve plate is arranged in the valve cavity, a control groove is arranged in the shell, the control groove is sealed by a cover plate, a rotating shaft is rotatably connected in the control groove, the rotating shaft is connected with the valve plate, and the valve plate is connected with the cover plate. A control mechanism for controlling the angle of the rotating shaft is arranged in the control groove; according to the throttle valve easy to assemble, the sector gear, the rotating shaft, the sleeve and the baffle are integrated and formed through injection molding, the number of parts in the throttle valve easy to assemble is reduced through the design, and compared with a structure that a rotating shaft and a sector gear in a traditional throttle valve are mutually independent and need to be assembled, the throttle valve easy to assemble has the advantages that the number of the parts is reduced, and assembling is easy; the process groove is formed in the shell, the machining precision of the shell is guaranteed through the arrangement of the process groove, air holes are prevented from occurring in the shell during production, and the weight of the shell is reduced.

The invention provides a modularized energy storage system testing platform and method, belongs to the field of energy storage system testing, and solves the problems of poor testing compatibility, low automation degree and the like of an existing energy storage system. The platform comprises a test console, a double-dragging module A, a double-dragging module B, a double-dragging module C and a countercurrent device which are respectively connected with a control bus and a communication bus, the method comprises the following steps: importing the specification of a to-be-tested energy storage system; electrical monitoring comprehensive decision making; recommending the to-be-tested energy storage system tool configuration optimal scheme; judging whether to test according to the recommended configuration scheme; judging whether the system is a string type energy storage system; testing step production of the string type energy storage system; testing step production of the centralized energy storage system; detecting and switching; automatic testing; judging whether the test passes or not; and judging whether the test tool is abnormal or not. According to the invention, compatibility in-loop testing of the string type energy storage system or the centralized type energy storage system can be automatically carried out on different battery configurations, PCS configurations and transformation module configurations.

The utility model discloses a railway parking anti-slip device. The railway parking anti-slip device comprises a joist installed between two stock rails, one side of the joist is in sliding connection with a sliding frame A, the other side of the joist is in sliding connection with a sliding frame B, the end of one side of the sliding frame B is provided with a frame body, and the frame body is connected with the sliding frame A through two parallel screw rods. The ends, penetrating through the front side end plate of the sliding frame A, of the screws are provided with limiting blocking tables, the sides, penetrating through the front side end plate of the frame body, of the screws are provided with nuts, the portions, located between the front side end plate of the sliding frame A and the front side end plate of the frame body, of the screws are sleeved with spring assemblies, an oil cylinder is arranged in the frame body, and the oil cylinder is installed between the two screws through a flange of the oil cylinder. The telescopic end of the oil cylinder faces the front side end plate of the frame body, a cushion block is arranged between the flange and the front side end plate of the frame body, and the flange is tightly pressed on the end face of the cushion block through a nut. The parking device solves the problems that in the prior art, braking force is weak, and the braking effect of the parking device is affected.

The steam generator with the cleaning assembly comprises a fixing frame and a body, and the middle of the top surface of the fixing frame is connected with the body in a penetrating mode. A motor box is fixedly mounted in the middle of the top surface of the body, a driving motor is fixedly mounted in the motor box, and the output end of the driving motor penetrates through the surface of one side of the body and is fixedly connected with a rotating rod; locking assemblies are symmetrically arranged on the surface of the top of the connecting rod; wherein the locking assembly comprises a connecting block fixedly connected with the connecting rod, by arranging the locking assembly, the connecting rod and the scraper which are soaked in water for a long time can be replaced, and therefore the situation that the inner wall of the interior of the body cannot be effectively cleaned due to the fact that the connecting rod and the scraper are prone to being damaged after being used for a long time is avoided; and meanwhile, by arranging a driving gear and a driven gear, the inner wall can be better cleaned, and therefore the heating efficiency of the water source is improved.

The utility model provides a self-circulation liquid path device aiming at a perovskite solution coating process, which comprises double Y shafts, rails of the double Y shafts are connected to the lower part of a gantry in a sliding manner, the upper part of the gantry is fixedly connected to the upper part of a spray head, a conveying pipe fitting is arranged at the rear part of the spray head, and a drainage pipe fitting is arranged at the end part of the conveying pipe fitting. A negative pressure device is arranged at one end of the drainage pipe fitting, a positive pressure device is arranged at the other end of the drainage pipe fitting, gas in a solution is extracted through negative pressure, and the situation that liquid remaining in spraying of the spraying head drips and leaks due to the gravity effect, a sample is polluted, and film coating of the sample fails is avoided; and the negative pressure device can extract gas from the solution supplied into the spray head, the solution containing bubbles is subjected to vacuum treatment, and the bubbles can be promoted to expand and escape from the surface of the solution by reducing the pressure, so that the bubbles are eliminated.

The invention provides a file conversion method and device, electronic equipment and a storage medium, and the method comprises the steps: obtaining initial table data and key table header item information, determining a column number and a column name of each table header in the initial table data, determining a to-be-processed hash table based on the column number and the column name of each table header in the initial table data, and converting the to-be-processed hash table into a to-be-processed hash table; traversing the to-be-processed hash table according to the predefined header enumeration object, determining an index value according to an index state of each enumeration item of the predefined header enumeration object in the to-be-processed hash table, labeling each enumeration item according to the index value to obtain a to-be-processed header enumeration object, and processing the to-be-processed header enumeration object according to the to-be-processed header enumeration object. If each key header item in the to-be-processed header enumeration object exists, performing format conversion on the initial table data according to the to-be-processed header enumeration object to obtain a target format file; according to the method and the device, the key information is dynamically identified by creating the hash table, processing is performed based on the actually existing header information, dependence on a preset fixed format is avoided, and more efficient and more accurate file conversion is realized.

The invention belongs to the technical field of star-shaped sleeve feeding and discharging, and particularly relates to a star-shaped sleeve feeding and discharging device which comprises a base, sliding frames, a clamping and conveying integrated material conveying mechanism, an extension type grinding mechanism and a clamping type driving mechanism, the sliding frames are symmetrically arranged on the two sides of the base, the clamping and conveying integrated material conveying mechanism is arranged on the sliding frames, and the extension type grinding mechanism is arranged on the clamping type driving mechanism. The extending type grinding mechanism is arranged at the end, close to the base, of the clamping and conveying integrated material conveying mechanism, the clamping type driving mechanism is arranged on the base, and the clamping and conveying integrated material conveying mechanism comprises a lifting mechanism, a butt clamping mechanism and a material carrying mechanism. According to the star-shaped sleeve feeding and discharging device, a star-shaped sleeve feeding and discharging structure and a star-shaped sleeve grinding structure are integrally arranged, the grinding time of the star-shaped sleeve can be prolonged, it can be avoided that many chippings are gathered between the inner wall of the star-shaped sleeve and a grinding layer, and the grinding quality of the star-shaped sleeve is guaranteed.

The invention discloses a wax melting device for wax mold casting and a using method. The wax melting device comprises a bottom plate, a heat insulation barrel is fixedly connected to the upper surface of the bottom plate, a melting barrel is arranged in the heat insulation barrel, a heating device is arranged on the inner surface of the heat insulation barrel, and the heating device is attached to the melting barrel; the upper surface of the heat insulation barrel is rotationally connected with a heat insulation cover, and the upper surface of the heat insulation barrel is movably connected with a crushing barrel; through holes are formed in the crushing barrel, the cross section of the crushing barrel is trapezoidal, a heat-conducting crushing net is used for crushing large-size wax blocks, wax residues are prevented from existing above the crushing net in a hot cutting and downward pressing mode, the crushed wax blocks are prevented from blocking the crushing barrel under the action of a stirring rod in the crushing barrel, and the crushing efficiency is improved. And the circle center of the stirring rod and the circle center of the smashing barrel are not located on the same line, and therefore it is guaranteed that discharging is not affected during stirring.