39results about How to "Reduce the number of mold repairs" patented technology

The invention provides a mould testing technology of an injection mould. Partial technological parameters in the mould testing technology are compared and analyzed, so that the mould testing technology is adaptively adjusted, and all the technological parameters required by the complete mould testing technology are acquired. Therefore, an existing mould testing technology of relying on manual experience judgment to determine the mould testing technology is replaced, accuracy of the mould testing technology is enhanced, and number of mould testing and mould repairing and corresponding mould testing and mould repairing cost are reduced.

The invention belongs to the technical field of metal plate forming, and relates to a wall board creep age forming method based on finite element mould profile rebound compensation. By the wall board creep age forming method, a finite element method is used for determining a mould profile, technological tests and mould repairing times are largely reduced, appearance control of formed parts can be realized, and forming precision is improved; according to the data through analog computation of forming process and rebound process of a formed piece, the mould profile is compensated, revised and optimized, so that rebound parts are the same as or close to the appearance of an ideal formed piece, and automatic optimization to the mould appearance during a creep age forming process is realized. The forming method can be applicable to various wallboard structures; except for overall wallboard parts, the forming method can be used for welding overall wallboards; welding residual stress can be effectively reduced, stress corrosion resistance capability is enhanced, and service lives of parts are prolonged.

The invention belongs to the technical field of metal materials and machining thereof, discloses an Al-Zn-Mn alloy profile for a rail transit vehicle body and a preparation method thereof, and relatesto the technical field of aluminum alloy machining. The alloy comprises the following chemical components of, by mass, 4.4-4.6 % of Zn, 0.1-0.15% of Cu, 0.3-0.4% of Mn, 0.16-0.24% of Cr, 0.04-0.08% of Ti, 0.12-0.20 of Zr, less than or equal to 0.12% of Fe, less than or equal to 0.06% of Si, and the balance Al, wherein the ratio of the mass percentage of the Zn to the mass percentage of the Mg is3.2 to 3.5. The Al-Zn-Mn alloy material prepared through the preparation method has high toughness, corrosion resistance, anti-fatigue and weldable characteristics, and can meet the running requirements of the high-speed rail transit vehicle body.

The invention relates to an injection mold and an injection method for an automobile tire cushion belt. The injection mold comprises a front mold insert, a rear mold insert and a middle template, wherein the lower part of the front mold insert is provided with a first mold core which is composed of an inverted cone frustum and a cylinder; the cylinder is connected to the lower end of the inverted cone frustum; the upper part of the rear mold insert is provided with a second mold core which is composed of a cone frustum and a cylinder; the cylinder is connected to the upper end of the cone frustum; a through groove, of which the inner wall is in an arc form, is formed in the middle of the middle template, and is matched with the first mold core and the second mold core to form a mold cavity which is used for casting the tire cushion belt; the middle part of the front mold insert is provided with a positioning ring and a sprue bush; the sprue bush is arranged in the middle of the positioning ring and is communicated with a runner which is formed in a parting surface; the other end of the runner is communicated with the mold cavity; a material-pulling nail is arranged in the middle of the rear mold insert in a penetrating manner; longitudinal through holes are evenly distributed in the front mold insert, the rear mold insert and the middle template; heating rods are arranged in the longitudinal through holes; a middle template limiting mechanism is also arranged at one side end of the front mold insert. The injection mold is compact in structure; the injection method is convenient and fast; rapid formation of the tire cushion belt is facilitated.

The invention discloses a production method of an aluminium alloy hollow profile for a high-speed train. The production method comprises the production steps of soft alloy dummy ingot extrusion, roller-hearth continuous solid solution quenching, stretch straightening, finished product sawing, sampling, gauging, framing, three-step integral aging furnace aging, performance testing and packaging andstorage. The production method is aimed at the problems that extrusion molding of the Al-Zn-Mg aluminium alloy profile for the high-speed train is difficult and the service life of a mold is too short, an Al-Mg-Si soft alloy is adopted as a dummy ingot to tract extrusion of an Al-Zn-Mg aluminium alloy ingot, formability of a hard alloy is greatly improved, the cracking and deformation tendency ofthe mold is greatly reduced, surface quality of the produced profile is improved, and application principles and methods of soft alloy extrusion are explored and summarized; and the produced profilehas good mechanical properties, stability of mechanical properties, elongation and surface roughness are greatly improved, the service life of the mold is remarkably prolonged, mold cost is reduced, the mold repairing time is decreased, production efficiency is greatly improved, and energy conservation and environment protection are achieved.

The invention provides a mould testing technology of an injection mould. Partial technological parameters in the mould testing technology are compared and analyzed, so that the mould testing technology is adaptively adjusted, and all the technological parameters required by the complete mould testing technology are acquired. Therefore, an existing mould testing technology of relying on manual experience judgment to determine the mould testing technology is replaced, accuracy of the mould testing technology is enhanced, and number of mould testing and mould repairing and corresponding mould testing and mould repairing cost are reduced.

The invention discloses a flow balance detecting device for the micro-extrusion of plastic multi-cavity pipes, which belongs to the technical field of plastic extrusion molding. The detecting device is characterized in that the detecting device comprises a connecting base, a shunt cone, a shunt bracket plate, a core, a finish mold backing plate, a finish mold insert, a centring adjustment bolt, atemperature controller, a thermocouple and a heating ring; the shunt cone, the core and the finish mold insert on the detecting device are replaced according to the measurement results of the sectionshape-size of plastic melt after cooling and molding; the concentricity of the finish mold insert and the core is regulated through the centring adjustment bolt arranged on the finish mold backing plate; and the temperature controller, the thermocouple and the heating ring are used for controlling the required temperature of detection in the process of extruding and molding the plastic melt. The matching relation and change law among the section shape-size of multi-cavity pipes, the structural parameters of runners and extrusion process parameters during the micro-extrusion flow balance of the plastic melt is directly obtained through the detecting device, so as to establish a theory of designing micro-extrusion dies for the plastic multi-cavity pipes.

The invention discloses an in-mold embedded type optical fiber. The in-mold embedded type optical fiber comprises an optical fiber and a mold body, wherein the mold body is internally provided with a stepped hole and a through hole for holding hardware; the stepped hole comprises a first stepped hole, a second stepped hole and a third stepped hole; an optical-fiber guiding block is held in the second stepped hole; an optical-fiber fixing block is held in the third stepped hole; the middle parts of the optical-fiber guiding block and the optical-fiber fixing block are respectively and horizontally provided with an inserted hole; the optical fiber is held in the inserted holes of the optical-fiber fixing block and the optical-fiber guiding block; and the other end of the optical fiber extends to the outer part of the mold body. By the mode, the in-mold embedded type optical fiber disclosed by the invention has the advantages that the service life of a mold can be prolonged, and the production efficiency is also improved.

The invention provides a concrete mixing blade die-face design system and a method based on springback compensation, which comprises three modules, that is, a die-face automatic springback compensation design module based on numerical simulation, a die-face CAD reconstruction design module, and a die-face correction module based on reverse engineering, thus a concrete mixing blade die-face CAD-CAE-CAD integrated system based on the springback compensation is formed, and geometric errors produced after the blade being formed are required to satisfy design requirements on the level of numericalsimulation, thus reducing correction times; and the process of converting a CAE model after a virtual die repair into a CAD geometric model which can be designed and manufactured is finished, a digital model after the blade being actually pressed is acquired by utilizing a reverse engineering technology and then is compared with the required design shape of the blade, and springback deviation is obtained so as to be used for guiding the actual die repair process of the blade, thus correcting the residual springback deviation and further improving the precision of the springback compensation onthe basis of numerical simulation springback compensation.

The invention provides a gear turning automatic core pulling device, wherein a gear driving rod is arranged in a vertically moving manner and is provided with a driving rack along a vertical direction, a driving part is connected with the gear driving rod, the driving rack is meshed with a driving gear, the driving gear is connected with a transmission gear and is used for driving the transmission gear to rotate, a core pulling sliding block is provided with a core pulling rack and a core pulling part, the core pulling rack is obliquely arranged and is meshed with the transmission gear, and the core pulling part and the core pulling rack are arranged in parallel. Preferably, the driving part comprises an upper plate and a lower plate which are arranged in an oppositely moving manner along a vertical direction, the upper plate is connected with the upper end of the gear driving rod, and the core pulling sliding block is arranged in the lower plate in a movably way along the inclining direction of the core pulling rack. The gear turning automatic core pulling device can achieve automatic core pulling, save labor and time, improve production efficiency, reduce mold repair times, prolong the service life of the mold, and lower production cost, and is smart in design, simple in structure, and simple and convenient to produce, and cost for development of a mold matched with the device is low, and therefore, the gear turning automatic core pulling device is applicable to large-scale popularization and application.

The invention discloses a production technology for simultaneously extruding A and B sides of an environment-friendly aluminum profile. According to the production technology disclosed by the invention, by improving a mold used by an priorexisting extrusion artprocess of the aluminum profile and the extrusion process, the A and B sides of the extruded aluminum profile are integrated, and two aluminum profile products which are matched with each other can be extruded at the same time and further the turnover rate of a finished frame is improved; meanwhile, by improving a horizontal powder injection process into a vertical powder injecting process, powder injection is more comprehensive and thorough, the quality of powder painting is improved and the appearance is better; in addition, by improving a powder injecting system in the powder paintinginjecting process, the improved powder injecting system does not have the phenomenon of injecting powder outward in the use process, so that theenvironment of an powder painting workshop is improved and threat to body parts of workers such as respiratory tract is avoided and better environment-friendly and hygienic properties are achieved.

The invention provides a covered edge forming method and device. The covered edge forming method comprises the following steps that obtaining is carried out, a preset product parameter and a preset process parameter are obtained; determining is carried out, a product simulation forming parameter is determined according to the preset product parameter and the preset process parameter; and judging is carried out, the product simulation forming parameter is compared with the preset product parameter, if a comparison result does not meet the preset requirement, the preset process parameter is modified, the determining step and the judging step are repeated, until the product forming meets the quality requirement. According to the covered edge forming method, if the comparison result does not meet the quality requirement, the preset process parameter can be modified repeatedly until meets the quality requirement, that is, whether a product forming state meets the quality requirement or notis verified in advance, and mould repairing times are reduced, so that product design cost is reduced; and meanwhile, the covered edge forming method no longer depends on the technical requirement andexperience for molding analysis, so that the analysis result is more accurate.

The invention discloses a waterproof mobile phone shell and a manufacturing method thereof. The manufacturing method comprises the following steps: preparing a body and assembly parts, and combining the body with the assembly parts to form a combined body; performing plasma treatment on a surface of the combined body; forming a whole-ring waterproof body on at least the edges of the combined body after the plasma treatment to form the waterproof mobile phone shell, wherein the waterproof body is made of silicone or fluororubber. According to the waterproof mobile phone shell and the manufacturing method thereof provided by the invention, the whole-ring waterproof body made of silica gel or fluororubber is formed on at least the edges of the combined body formed by the body of the mobile phone shell and the assembly parts, the interference fit is formed between the waterproof body and the interior of the mobile phone to realize the mobile phone shell with the waterproof and sealing functions; and meanwhile, a mold structure is simplified, and the development period of the product is shortened.

The invention discloses a full-automatic wet method for producing magnetic steel molded products and molding equipment thereof, pertaining to the field of production methods of the magnetic steel molded products. The method of the invention comprises the steps of preparing slurry, pressing and molding a green body, sintering the green body to a rough cast and post-processing the rough cast to form a product, etc. In the steps of pressing and molding the green body, the equipment using the method of the invention is adopted to independently control the ascending movement and descending movement of a mold cavity so as to cause the mold cavity to do ascending movement relative to a core bar, thereby providing a feeding space; the center of the core bar is provided with a feeding hole, a feeding port at the lower part of the feeding hole is communicated with a feed bin and the slurry is fed from an opening at the top part of the feeding hole to a material containing space; after the completion of the feeding, the mold cavity is fast controlled to return to a position which is parallel to the top part of the core bar, and then pressed, after pressing, a mould is opened, an upper oil cylinder and a lower oil cylinder return in sequence. The lower oil cylinder returns and drives the mold cavity and the core bar descends to the same plane with a punch simultaneously. The green body isdemolded. The full-automatic wet method of the invention greatly shortens the time of pressing and molding, reduces energy consumption, greatly improves production efficiency and reduces the labor intensity of workers.