136 results about "Mold testing" patented technology

The invention belongs to the field of a frontier of mold processing and manufacturing and in particular relates to a method for manufacturing a zero FIT injection mold. The method comprises the following steps: performing CAM tool path process design, performing a numerical control machining process, performing electric spark and wire-electrode cutting machining, performing grinding machine processing and performing mold detection according to mold design, engineering drawing manufacturing, mold tolerance standard setting and mold processing. After the mold processing and manufacturing operation is finished, the assembling requirements can be met, and the manufacturing precision of the mold is greatly improved, so that qualified products are obtained at a time, and the cumbersome process of performing repeated mold testing and modifying product parameters and mold parameters is avoided after the mold processing is finished. The method is high in practicability and good in service effect and can be widely popularized and applied in the field of manufacturing of injection molds.

The invention discloses a method and a device for measuring concrete or mortar volume deformation. The method comprises the following steps: pouring a mixture mixed by concrete or mortar into an open mold testing box according to engineering needs; wholly putting the open mold testing box filled with the concrete or mortar mixture into a heat insulation bottle; sealing the bottle opening of the heat insulation bottle by using a sealing cover provided with a graduated tube, a gas-guide tube and a thermometer; pouring liquid which is not dissolved with water into the heat insulation bottle through the graduated tube, so that the mold testing box is totally immersed by the liquid and the liquid is full of an inner cavity of the heat insulation bottle; and putting the whole heat insulation bottle into a constant temperature water area, so that the volume expansion or shrinkage deformation conditions of the concrete or mortar under heat insulation conditions can be accurately measured through the liquid level position conditions in the graduated tube. The method has the advantages of high measurement accuracy, simple structure, convenience in operation and the like.

The invention discloses an automobile covering part mold manufacturing method. The method comprises steps as follows: step 1, selecting a mold development process route; step 2, performing mold profile design and forming process analysis; step 3, manufacturing an engine cover drawing die RP model; step 4, manufacturing an engine cover drawing die mold; step 5, performing stamping and mold testing experiments. The automobile covering part mold manufacturing method has the technical effects that the manufacturing period of an automobile covering part mold is shortened, and the production cost is reduced.

The invention provides a device and method for fiber and pitch adhesion testing. The testing device comprises a pitch injection groove, a mold testing base plate, a clamp block, a fiber caulked joint and a fastening device, wherein the pitch injection groove is an axisymmetric polygonal notch container component provided with a base plate and an open side wall, a closed groove is formed by the pitch injection groove and the clamp block located at the open side wall end, the open side wall end becomes narrow and is detachably arranged on the mold testing base plate, the open side wall is located on the vertical plane of the axial central line of the container component, the fiber caulked joint is a groove located at the position where the pitch injection groove and the clamp block intersect with the axial central line of the testing device and penetrates through the whole testing device, and bolts are arranged at the head side and end side of the fiber caulked joint respectively. According to the method, various fibers are bound into a fiber bundle with similar circular section diameters, the mass change of the fiber bundle before and after pitch extrusion at the pitch softening point temperature is calculated so as to test fiber and pitch adhesion in a quantified mode, and then a testing result is more objective and more comparable.

The invention provides a method for preparing an oil well cementing cement briquette with silicon carbide/boron carbide hollow ceramic microbeads. The method comprises preparation of silicon carbide/boron carbide closed-pore hollow composite ceramic microbeads, burdening, mixing, stirring and size mixing, mold testing and strength testing. The method is characterized in that 40-50wt% of grade G oil well cement, 10-15wt% of 13-micron superfine cement, 25-35wt% of silicon carbide/boron carbide composite ceramic microbeads having the grain size ranging from 5 to 50 microns, 5-7wt% of fly ash having the loss on ignition of 1.1%, 1.5-2wt% of calcium oxide having the purity of 99.9%, 0.5-1.0wt% of sodium sulfate and 1-3wt% of micro-silicon are stirred in a stirrer in a water cement ratio ranging from 0.5 to 0.7 (W/C) for size mixing for 40 seconds, next, the mixture is poured into a test mold and maintained in a water-bath curing box at a constant temperature of 52 DEG C for 24 hours or 48 hours, and after being demolded, the obtained material is soaked in cold water for 1 hour, and then the properties of the obtained material are tested.

The invention provides a mould testing method for a precise injection mould. The method is characterized by comprising the following steps of: 1, measuring the water transport flow of the mould; 2, obtaining a reasonable ejection speed of an injection moulding machine; 3, performing a glue balance test; 4, performing a pressure maintaining time test; and 5, ending the mould test. Through the mould testing method for a precise injection mould provided by the invention, the traditional mode of determining the mould repairing scheme through subjective judgment of people is changed, and the technology for a mould test of all mould testing workers is set to form a uniform standard; and thus, a reasonable technology for injection moulding can be directly found out without unnecessary efforts, and the defects of the mould can be discovered in time. The cost of twice mould tests can be saved for each set of mould on average (the repairing cost is saved since the mould testing times is reduced).

The invention discloses an automatic assembly machine for locks, which comprises an assembly bed, a universal wheel is installed on the bottom of the assembly bed, and an assembly mechanism is rotatably connected to the top of the assembly bed, and a lock machine retrieving mechanism is installed in front of the assembly mechanism , and a mold is provided above the assembly mechanism, a lock mold detection device is connected below the lock stamping mechanism, and a lock small cover blanking device is installed under the lock mold detection equipment, and the lock small cover blanking device The left side is connected with the spring blanking mechanism of the lock assembly machine, and the lock cover installation mechanism is installed above the spring blanking mechanism of the lock assembly machine. The lock automatic assembly machine can drive the mold to rotate through the assembly mechanism, so that the parts in the mold can complete each step of assembly work in sequence, which improves the efficiency of lock assembly, and the assembled lock mold inspection equipment can Parts are inspected, thereby avoiding the appearance of substandard products and improving the quality of lock assembly.

The invention discloses a determining method of designed shrinkage of a hollow turbine blade investment casting mold, and relates to hollow turbine blade investment casting molds. The method is particularly applicable to designing of a mold cavity of a hollow turbine blade investment profile mold. A deformation model of hollow blades is obtained through a finite element method, by cutting out a series of two-dimension cross sections on a blade deformation model and a design model, and making a section line discretized into points, distances among the corresponding points are obtained to builda two-dimension displacement site; bending and torsion deformation and shrinkage deformation included in the displacement site are separated. The inner cross section and the outer cross section of theblades are subjected to line connection processing, afterwards blade stopping structures and non-stopping structures are recognized, then the wall thickness of the hollow blades is calculated, and bycalculating shrinkage of different structures, the distribution of the nonlinear shrinkage is built. Finally a shrinkage model is subjected to least square fit of cubic polynomial, and the determination of the designed shrinkage of the investment casting mold is achieved. The finished product rates of the turbine blades are greatly increased, the cycle for mold testing is shortened, and the frequency for mold testing is reduced. The determining method has the advantages of being short in design cycle, high in precision and high in efficiency.

The invention aims to overcome the drawbacks of the prior art and provide a detection device for ensuring that the normalness and stability of the internal elements and movable parts of hydraulic, pneumatic, position sensing and cooling water systems of a large blowing mold are checked before use. Mold state detection car equipment can test the water path, oil path and circuit of the mold before each time of mold replacement. If the water path, oil path and circuit of the mold are normal according to the test, the mold can be replaced according to plan; otherwise, maintenance is required to be performed at once. The checking of the state of the mold by the mold testing car is independent of blowing equipment, so the mold test car can move at anytime and anywhere and can be used flexibly; and when used in checking, the mold test car is more convenient for test in the movable state than in a blowing equipment-mounted state.

The invention provides a mold testing method, a device thereof and electronic equipment, wherein the method, the device thereof and the electronic equipment relate to the field of mold testing technology. The mold testing method comprises the steps of acquiring a matched background image which matches a to-be-tested mold image in a plurality of prestored background image, wherein the background image is the image on the condition of no foreign matter in a working process; performing transformation processing, normalization processing and cutting processing on the to-be-tested mold image and the matched background image based on the matching matrix of the to-be-tested mold image and the matched background image, and obtaining a first mold image and a first background image; obtaining a first differential image of the first mold image and the first background image, performing threshold segmentation on the first differential image and communicating area screening, and obtaining a first area image; determining whether the pixel value of pixels in the first area image is zero; and if not, outputting information that the foreign matter exists in the mold. The mold testing method can realize automatic testing for the foreign matter of the mold.

The invention provides a plastic grating pre-deformation mold design method, and belongs to the field of molds. The method comprises the steps that 1, median correction is conducted, and 3D data is consistent with median data; 2, pre-deformation data is designed, injection molding simulation is conducted on a product, the buckling deformation result of the product is analyzed, then the pre-deformation area of the product is analyzed and determined, after the buckling deformation result conforms to CAE analysis, locking of anti-deformation data is conducted, and 3D pre-deformation data is completed; 3, mold design and manufacturing are conducted on the basis of the second step; 4, mold testing and mold repairing are conducted, the product is placed for 24H and then measured, and data adjustment of a mold 3D model is conducted on the super-difference part; and 5, mold shaping is conducted. According to the method, the mold manufacturing cost is reduced, and the requirements of the product size and the mold service life can be met through one set of mold.

A pelvis arcuate line lower edge anatomic bone fracture plate relates to the manufacturing technology of surgical appliances and is applicable to fixing fracture of the pelvis of a human body. A plate body of the pelvis arcuate line lower edge anatomic bone fracture plate is a spatial arc-shaped curve body matching with the shape of a pelvis arcuate line lower edge anatomy surface, fixing screw holes (3) are arranged on a surface of the plate, and grooves (4) with equal strength are arranged on two sides of the plate. The pelvis arcuate line lower edge anatomy type bone fracture plate can be used as a mold plate for realizing fracture reduction of a pelvis arcuate line lower edge, is beneficial for examining a fracture reduction effect, and can meet requirements of internal fixation of pelvis inlets in different types. Intraoperative shaping consumed time is shortened by the anatomic shape of the bone fracture plate, influence to strength of the bone fracture plate due to repeated intraoperative shaping is avoided, problems that surrounding soft tissues are injured in a mold testing process and fracture reduction is lost are reduced effectively, particularly, sufferings of patients are reduced, surgical risks and complications are also effectively decreased, and pelvis fracture surgery success ratio and a therapy effect are improved.

The invention discloses a shielding shaft vertical jacking mold testing device and method. The testing device comprises a tank body, a shielding tunnel, a top tube tunnel, a soil body and a monitoringsystem. The testing device is established according to similarity theories, rigidity equivalent effect theories and symmetry, and in addition is simple in structure, and components can be replaced according to actual situations. By adopting the testing method, the actual vertical jacking process of a shielding shaft can be simulated, by adopting the monitoring system, structure change of the shielding tunnel and the soil body can be finely fed back, a tester can visibly experience the structure change of the soil body, and an effective instruction function can be achieved. The device is applied to the field of underground building construction.

The invention discloses a method for digitally and quickly detecting and analyzing a sand core. A scanner is used for scanning a mold to obtain scanning point cloud; the mold scanning point cloud performs processing and mold closing; the cavity point cloud is extracted, the cavity point cloud and a process 3D model are input, the tolerance color scale map is set, and the curved surface comparisonis performed; the mold testing and the evaluation method can intuitively analyze whether the cavity is consistent with the process model or not, so that the problem that the mold lacks a shape surfacein the machining process is solved. According to the method, the problems of misalignment of the sand core and burrs of the sand core can be quickly and directly analyzed, so that the quality of thesand core is improved, the requirement of avoiding burr trimming is met, and the productivity is improved. And meanwhile, as long as the comparison result is consistent with the process 3D model, theproblems of core assembly interference and interference with a tool and other auxiliary tools in core shooting and core assembly can be avoided, so that the phenomena of core assembly and sand core scraping and changing are rapidly and accurately solved. According to the method, the cost can be reduced, and qualified castings can be cast at a time.

The invention discloses a concrete test block manufacturing device. The concrete test block manufacturing device comprises a mounting base plate (1), a controller (10), a mold cavity bearing table, alifting hydraulic cylinder (4), a vibration mechanism and the like. The invention further discloses an implementation method of the concrete test block manufacturing device. The implementation methodcomprises the steps that the inner walls of a mold testing cavity (8) are coated with a layer of mold releasing liquid, and first-time concrete pouring is carried out on the interior of the mold testing cavity (8); and the vibration mechanism is rotated and lowered, and a vibration rod of the vibration mechanism is inserted into concrete in the mold testing cavity to the position 2-3cm away from the bottom of the mold testing cavity. According to the concrete test block manufacturing device and the implementation method thereof, mold releasing can be well completed through the lifting hydraulic cylinder, during use, the mold testing cavity is lifted upwards through the lifting hydraulic cylinder, a formed test block is firmly pressed through a pressing plate of a flat pressing mechanism, the mold testing cavity can be separated from the test block, and the integrity of the test block is effectively ensured.

The invention relates to a pedestal pan flushing efficiency evaluation method. The method comprises the following steps: establishing a three-dimensional model of a pedestal pan design scheme; establishing a computational fluid mechanics analysis model based on the three-dimensional model; Solving and calculating the fluid mechanics analysis model; extracting evaluation data; and performing flushing efficiency evaluation based on the evaluation data. The flushing efficiency evaluation method is provided by means of simulation analysis, is mainly applied to the jet siphon type pedestal pan, and can complete flushing efficiency evaluation of a design scheme in a design stage, so that mold testing and mold repairing links are reduced, the development cycle and cost of products are reduced, and the invention has good application and popularization values.

The invention discloses a springback compensation method in a heating bending technology. The method includes the following steps that two different forming temperatures are selected, and the bendingangles after springback at the two temperatures are measured respectively; the angle slopes of the bending angles after springback of a material during heating bending forming are calculated by the aid of the selected forming temperatures and the corresponding bending angles after springback; the first-time formal bending forming temperature is determined according to the angle slopes of the bending angles, and the bending angles after springback at the corresponding temperatures are measured; and the current-time forming temperature is corrected by the aid of the deviation of the last-time bending angle after springback from the target bending angle until the number of bending forming times reach the preset number of formed pieces. According to the method, under the condition that mold parameters in a mold bending technology are not changed, the bending angle after springback in the mold bending technology can be compensated through adjustment of the temperature applied to a plate, sothat the consistency of angles of bent pieces after forming is improved, the time for mold repairing and mold testing is saved, and the flexibility for forming plates made of different materials by the aid of one set of molds is improved.