32 results about "Roughcast" patented technology

The invention relates to a natural building material panel consisting of individual blanks made of clay and loam, which are arranged seamlessly and offset and are connected by force. Since the individual components (blanks) are already dry, the panel production process is not subject to drying shrinkage, and the final panel can be as large as an entire wall. The overlaps and the fully bonded paper reinforcements on the top and bottom surfaces, as well as between the layers, provide sufficient reinforcement to withstand flexural loads. The internal reinforcements are temporarily protected by the resting blanks in case of fire or water, thus keeping the plate dimensionally stable for longer.

The invention relates to the field of fracture prevention of 3D printing sand cores, in particular to a method for preventing a superfine 3D printing sand core from being fractured. In order to solve the problems that in the prior art, the strength is increased in the mode that a core bar penetrates through a sand core, but a gap between the core bar and the sand core cannot be effectively eliminated, and the fracture trend of the 3D printing sand core is increased, the invention provides the anti-fracture method for the superfine 3D printing sand core. The special core bar has the following beneficial effects in the aspect of solving the problem of breakage of a sand core with a superfine structure: after a casting is knocked out, the core bar is naturally separated and can be recycled and reused; the core bar blank is convenient to obtain and simple to process, and the cost is effectively saved. The special core bar is high in practicability, and sand cores with similar structures can be flexibly adjusted and used; bonding agents are filled inside and outside the special core bar to be seamlessly connected with the sand core, and the strength of the sand core is improved through overall hardening.

A kind of mining bimetallic sprocket and manufacturing method, including the following steps, using three fire forging forming mode to the bimetallic profile blank is forged treatment;The sprocket of forging forming is normalized;After the sprocket blank of normalizing is sprocket rough machining tooth groove, inner hole, outer circle, end face;The base body of sprocket is quenched and tempered heat treatment;Outer circle of sprocket base body, tooth type semi-finishing;Finish machining gear.The sprocket piece material of the application can satisfy that sprocket appearance hardness is lower, wear resistance is higher, not easy to wear during use.Connection sleeve material can satisfy that sprocket appearance hardness is lower inner hole hardness is softer, easy to gear.Adopt blank 3 fire forging process, can make blank internal grain refinement.

The invention discloses a complex structure casting resin sand gravity casting liquid weight calculation method, and relates to the technical field of equipment manufacturing, and the method comprises the following steps: building a casting part finished product three-dimensional model; the machining allowance grade is determined according to the nominal size of the part finished product three-dimensional model, and the part finished product three-dimensional model is adjusted based on the machining allowance grade to obtain a process blank model; designing a pouring pipeline model and a riser model; obtaining the volume of each model based on three-dimensional design software; selecting a reasonable volume shrinkage rate epsilon v according to the element content in the raw material molten steel; obtaining a resin sand box expansion rate fv based on measured data; correcting the volume of the process blank model based on the volume shrinkage rate epsilon v and the resin sand box expansion rate fv; and the mass of molten iron needed for pouring is calculated based on the volume of each model. According to the method, the residual molten steel is smaller than or equal to 4%, the yield is 50% or above, the material utilization rate is synchronously increased by 3-10%, cost reduction, energy conservation and zero test are achieved, and the problem that molten steel raw materials are wasted during gravity casting of complex-structure casting resin sand is solved.

The utility model discloses a water pump cover casting mold capable of preventing core breakage during molding, which relates to the technical field of casting molds and comprises a mold plate, two upper molds arranged on the top surface of the mold plate, two lower molds arranged on the bottom surface of the mold plate, a first straight pouring column arranged on the top surface of the mold plate, a second straight pouring column arranged on the bottom surface of the mold plate, and a third straight pouring column arranged on the bottom surface of the mold plate. The second straight pouring column is arranged on the bottom surface of the template and is coaxially arranged with the second straight pouring column, the lower cross gate is connected with the second straight pouring column, the ingate is vertically arranged on the lower mold, and the shunting piece is arranged on the top surface of the template and is connected with the ingate and the lower cross gate at intervals; according to the water pump cover casting mold capable of preventing core breakage during molding, smooth demolding of molding sand in a deep hole can be achieved, the situation that a water outlet through hole in the middle of a casting blank after molding and pouring is blocked and a casting is scrapped due to core breakage in the molding sand is avoided, and the percent of pass and the production efficiency of products are improved.

The invention belongs to the field of metal materials, and relates to a long-life temperature-resistant anti-crack composite plug and a preparation method thereof. According to the invention, through elaborate design of components of the metal layer, excellent hardness and wear resistance are provided, the material is suitable for high-temperature and high-wear working conditions, and by adding a proper amount of RE and Ni, the plasticity and toughness are improved while the material strength is improved, the service reliability is remarkably improved, and the service life is remarkably prolonged; an asymmetric thermal field which is fast in internal cooling and slow in external cooling is constructed, high-quality interface bonding and a compact structure are achieved in the composite casting process, a surface pressure stress field beneficial to crack resistance is formed in the service process, thermal stress concentration is effectively relieved, generation and extension of thermal fatigue cracks are restrained, and the service life of the composite casting is prolonged. And the service life, temperature resistance and crack resistance of the composite plug are improved.

The utility model provides a special vehicle fluted disc blank extrusion forming device which is characterized in that a plurality of sand cores are stacked in multiple layers in the vertical direction, and a fluted disc blank is formed in a cavity of each sand core; the cavity of each layer of sand core is provided with a plurality of flow gates; the ingates are communicated and connected with the inner sprues of the sand cores, and the cavities of the sand cores are communicated into a whole through the inner sprues; a dead head is arranged at the uppermost part of the device, is connected to a cavity sprue of the sand core at the topmost layer, and is interconnected and communicated with the ingate; a sprue is designed in the device, the ingates of the sand cores on the bottommost layer converge at the lowest position of the sprue through the bottom runner, and the sprue is higher than the sand cores on the topmost layer and is flush with the dead head. According to the utility model, a plurality of blanks share one upper and lower combined cavity device, and are formed through one-time casting, so that the simultaneous mold filling process of a plurality of products can be ensured, the production efficiency is improved, the defects of sand holes, air holes and the like can be effectively reduced, and the quality of the product blanks is ensured.

The invention relates to the field of seven-stringed plucked instrument designing and manufacturing techniques, in particular to a chopping technique for a seven-stringed plucked instrument embedded with a sound beam, which comprises the following steps: S1, narrow groove digging: presetting the size of a narrow groove, cutting red sandalwood into preliminary blank battens by using a sawing tool, and planing the blank battens by using a planing tool to enable the surfaces of the battens to be flat and smooth, respectively determining the positions of two narrow grooves in treble and bass areas of the groove belly of the guqin panel; and S2, sound beam finishing and polishing are conducted, specifically, the machined red sandalwood battens are further finished, whether the edges of the red sandalwood battens are neat or not is checked, abrasive paper is used for polishing the red sandalwood battens, and polishing is started from raw abrasive paper. According to the guqin, the treble and bass beams are additionally arranged, so that the panel of the guqin has the acoustic characteristics of different wood materials, the ideal treble and bass effect can be achieved, the coexistence of the drum sound and the golden stone sound required by the guqin is achieved, and the guqin is more stable and not prone to deformation due to the fact that the sound beams are additionally arranged.

This invention discloses a method for machining thin-walled, porous, irregularly shaped single-sided frame parts, belonging to the field of machining technology. The method includes the following steps: pretreatment, placing the part blank in a constant-temperature furnace to release stress; milling the reference surface, milling a reference surface on the surface of the part blank to complete the machining of bolt holes on the edge of the part blank; rough and finish milling the smooth surface, using a two-step progressive feed method to complete the milling of the smooth surface of the part; rough and finish milling the frame surface, cutting the frame surface layer by layer from the outside to the inside according to the frame surface contour; drilling and blanking, machining the remaining positioning holes and weight-reducing holes, and then blanking the part using wire cutting; and fitter finishing, removing burrs and flash from the surface of the part and the holes, and using a coordinate measuring machine to inspect and finish any out-of-tolerance areas. The beneficial effects of this invention are: it reconstructs the machining sequence and process logic, reverses the existing machining sequence, and structurally avoids the problem of insufficient support caused by cavities, making it suitable for machining thin-walled, porous, irregularly shaped single-sided frame parts.

The utility model discloses a processing and positioning device and a processing system for an inspection block. The processing and positioning device for the inspection block comprises a clamp body, a workpiece mounting groove is formed in the clamp body; a to-be-processed inspection block blank is placed in the workpiece mounting groove; the front end of the clamp body is provided with a first compression screw which is longitudinally distributed; the inspection block blank piece is located right behind the first compression screw; the right end of the clamp body is provided with a screw sleeve; the thread sleeve is in threaded connection with a second compression screw which is vertically distributed; the inspection block blank is located right below the second compression screw; two first positioning pins are vertically arranged at the rear end of the clamp body in a penetrating manner; a second positioning pin is vertically arranged on the front side of the clamp body in a penetrating manner; and the front side and the rear side of the inspection block blank are respectively contacted with the second positioning pin and the first positioning pin. The positioning device can conveniently and reliably position the blank of the inspection block, ensures the positioning accuracy, is favorable for further processing the vertical through hole of the workpiece, and ensures the processing accuracy.

The application discloses a heat treatment method for improving the depth of a hardened layer on the surface of 40CrNi2Mo, and comprises the following steps: selecting a blank casting of 40CrNi2Mo, quenching and tempering the blank casting, heating the blank casting at 850 DEG C, keeping the temperature for 6 hours, and water cooling after discharging; heating the blank casting at 580 DEG C, keeping the temperature for 10 hours, and air cooling after discharging; rough milling the blank casting, and then stress relieving annealing, wherein the annealing temperature is 500-530 DEG C, the keeping time is 10 hours, and the blank casting is air cooled after being cooled to 200 DEG C in the furnace. The method can deepen the quenching layer depth and reduce the occurrence of quenching cracking of the part.

The present application relates to the technical field of aircraft sheet metal part processing, and particularly relates to a processing method of an inner boss annular sheet part, which comprises the following steps: selecting a metal sheet material meeting the material quality requirement of the part; cutting and blanking the sheet material according to the specification; obtaining a sheet material blank with a preset size through numerical control milling; cleaning the surface of the sheet material blank; clamping the pretreated sheet material blank to a three-axis roll bending machine; calculating and adjusting the upper roller shaft pressure H of the three-axis roll bending machine; performing a multi-pass gradual roll bending process to form an annular blank with a preset curvature; and placing the roll-bent annular blank into an expansion die, introducing high-pressure gas, and making the annular blank adhere to the cavity of the expansion die to form an inner boss, thus achieving the precise forming of the inner boss and the annular outer contour at one time. The present application avoids cracks and defects in roll bending forming, maximizes the use of materials, reduces waste, and realizes the efficient and accurate manufacturing of the inner boss annular aluminum alloy sheet part.

This invention relates to the field of sand mold technology, specifically to a complex marine propeller sand mold. It includes a riser sand block, blade sand block, base sand block, and sealing sand block; the riser sand block, blade sand block, and base sand block are placed sequentially, effectively solving the problem of excessively large sand mold size. The riser sand block, blade sand block, and base sand block are engaged by locking blocks and slots, facilitating hoisting, assembly, and positioning, and reducing the risk of fire. The upper end of the lifting core is integrally formed with the top of the riser sand block; this reduces the degree of freedom of the lifting core and solves the problems of difficult lifting core design and low assembly accuracy. The blade sand block is entirely continuous, allowing observation and painting of the blade cavity surface from either the hub end or the blade tip end. After the paint dries, the sealing sand block is directly inserted into the blade tip for sealing, effectively solving the problem of difficult painting of the blade cavity. Using the technical solution of this application, small, complex structure propellers can be manufactured with convenient construction, simple operation, and high dimensional accuracy of the blank.

The invention discloses a rapid molding casting process for a hub. The rapid molding casting process comprises the following steps: S1, manufacturing a sand core corresponding to a lateral through hole of a spoke in shape; s2, preheating a side die, an upper die, a bottom die and a sand core of the hub die; s3, the sand core is positioned and installed at the preset position of the inner cavity of the side mold; s4, the mold is closed to form a casting cavity containing the sand core; s5, molten metal is poured into the cavity, and the sand core is wrapped with the molten metal; s6, after pouring, key parts such as an upper lug of the hub are rapidly cooled, and meanwhile sectional type high pressure is applied to a cavity through a liquid storage hopper for feeding; and S7, the mold is opened after solidification, the hub blank with the lateral through hole structure is taken out, and finally the sand core is removed. According to the method, the complex lateral through holes are directly formed in the casting link, a large amount of subsequent milling machining is omitted, the production cost is greatly reduced, the production efficiency is improved, and the overall mechanical property of the hub is guaranteed.

The invention discloses an outer wall heat insulation layer tapestry brick and a manufacturing method. The outer wall heat insulation layer tapestry brick is prepared from, by weight, 66% of solid waste, 29% of organic minerals and 5% of water. A large amount of solid waste materials are used as main raw materials of the face brick, and a small amount of cement is used for shaping the formed face brick blank, so that the manufacturing cost is saved, the resource waste is avoided, and the heat insulation, heat preservation and moisture absorption effects are improved; the tapestry brick blank is shaped and cured through matching of cement and water in a small proportion, the tapestry brick is formed without high-temperature calcination, and the processing process is green, low-carbon, energy-saving and environment-friendly.

The application discloses a kind of stepped sheet parts linear cutting processing methods, the method includes the following steps: step 1 draws workpiece graphics, step 2 prepares blank, step 3 drills through silk hole, step 4 installs blank, step 5 position alignment, step 6 adjusts cutting parameter, step 7 starts cutting, step 8 cutting process monitoring, step 9 installs positioning block, step 10 cutting, step 11 checks after cutting, start cutting includes rough cutting cavity and fine cutting cavity, the processing method proposed in the application, by adding positioning block in cavity, the stepped sheet parts are held by positioning block, so that when cutting stepped sheet parts, the bending deformation of stepped sheet parts is avoided, the processing difficulty is greatly reduced, in addition, this processing method is ingeniously designed, and the manufacturing cost is low, and the process is simple, easy to operate, and the skill requirement of operator is low, the processing quality is stable, and suitable for promotion and use.

This invention relates to a heat treatment method and apparatus for hot-forged blanks, belonging to the field of metal heat treatment technology. The method includes: acquiring eddy current voltage values ​​in response to a trigger signal; determining the material type based on the eddy current voltage values ​​and voltage ranges; matching aeration parameters, cooling temperature, temperature gradient threshold, and temperature difference threshold based on the material type; performing aeration using the aeration parameters and acquiring the surface temperature; selecting the maximum and minimum surface temperatures from the surface temperatures and calculating the surface temperature difference, and calculating the average temperature based on the surface temperatures; determining the core temperature based on the material type and average temperature and calculating the temperature difference; correcting the aeration parameters using the surface temperature difference and the temperature difference value, and performing aeration based on the corrected aeration parameters until the core temperature is no greater than the cooling temperature, the surface temperature difference is no greater than the temperature gradient threshold, and the temperature difference is no greater than the temperature difference threshold, at which point aeration is stopped and cooling is complete. This invention balances the cooling effect of raw materials at different locations, improving the quality of the raw materials.

The application provides a manufacturing process for improving the comprehensive performance of large thick-wall 2A14 conical parts, which comprises the following steps: A) blanking by forging: A1) preparing materials, A2) forging and punching, and A3) hole expanding; B) machining before quenching; C) heat treatment: C1) quenching heat treatment, C2) aging heat treatment, and C3) annealing heat treatment; and D) part machining. In the blanking by forging, the method of 'rotary upsetting + lubricating one end of the cylindrical blank and not lubricating the other end' is used to realize the blanking process from the cylindrical blank to the circular truncated cone blank; the method of 'punching + segmented hole expanding' is used to realize the blanking process from the circular truncated cone blank to the conical ring blank; the method of reducing the metal material quantity and the wall thickness of the forging blank is used to improve the deformation degree of the grains at the 1 / 2 wall thickness and then improve the elongation; and the double residual stress reduction method of'machining thinning before quenching + final stress relief annealing' is used to reduce the residual stress level of the special-shaped forging, so as to reduce the cracking risk during the machining of the finished product.

The utility model relates to the technical field of casting, in particular to a casting blank shakeout treatment device which comprises two symmetrically-arranged supporting frames, a roller and two sealing covers, a plurality of baffles are annularly and fixedly connected to the inner wall of the roller at equal angles, and each baffle is of a net-shaped structure. A discharging mechanism used for moving the workpieces out of the roller is arranged in the roller, and a vibrating mechanism used for vibrating the discharging mechanism is arranged on the side face of the supporting frame. According to the molding sand filtering device, most of molding sand can be filtered out through rotation of the roller, then the molding sand falling into the rectangular frame can fall into the roller again through vibration of the rectangular frame, meanwhile, workpieces in the rectangular frame can be pushed out from the two discharging ports through movement of the push plate, and the molding sand is filtered twice, so that the molding sand is more uniform. The surface of the pushed-out workpiece can be cleaner, secondary operation on the workpiece is avoided as much as possible, and therefore the production efficiency of the workpiece can be improved.

The application discloses a finishing method for a flat shaft, which comprises the following steps: S1, machining a weight block and a flat surface of a flat shaft roughcast; S2, assembling the weight block and the flat shaft roughcast to form a combined shaft, wherein the outer surface of the combined shaft is a circular arc structure, the diameter of the circular arc surface of the flat shaft roughcast is not less than a preset diameter size, and the diameter of the outer circumferential surface of the weight block is not greater than the preset diameter size of the flat shaft; and S3, finishing the outer circumferential surface of the combined shaft, so that the diameter of the combined shaft meets the requirement of the preset diameter size. Compared with the prior art, the finishing method for the flat shaft can reduce the deflection error generated during finishing of the flat shaft and improve the machining quality.

The invention discloses blank gear casting forming equipment, and relates to the technical field of gear casting, and the blank gear casting forming equipment comprises a forming unit which comprises a vibration assembly arranged at the top of an operation table, a fixing assembly rotationally arranged at the top of the vibration assembly, a compression assembly rotationally arranged in the fixing assembly, and a mold assembly arranged at the top of the operation table, the compression assembly is rotationally connected with the fixing assembly and the vibration assembly. Gradient compaction of casting sand is achieved through three-in-one cooperative operation of the mold assembly, the compression assembly and the vibration assembly, the casting sand is compacted layer by layer along the surface of a gear mold through the mold assembly and the compression assembly in a two-way opposite pressing mode, and then micro vibration is provided by the vibration assembly. The casting sand is subjected to secondary flow and rearrangement under the coupling action of extrusion and vibration, local too tight areas are eliminated, weak areas around complex structures such as thin walls and fine ribs are automatically filled, and therefore a casting sand model uniform in compactness and consistent in air permeability is obtained in a whole cavity.

A sheet-shaped blank (10) for press forming is produced by shearing a metal sheet (30). The blank (10) includes a sheared edge (14), which includes a sheared surface (14b) and a fractured surface (14c) in the sheet thickness direction and has a loop shape in plan view. In plan view, an edge of the sheared edge (14) includes concavely curved portions (20). The average of lengths of the fractured surface (14c) in the sheet thickness direction in the curved portions (20) is greater than the average of lengths of the fractured surface (14c) in the sheet thickness direction over the entire perimeter of the sheared edge (14).

This invention provides a method for processing a tapered roller bearing cage. Step one: The sheet metal is cut, stretched, punched with window holes, edge-machined on the large end face, and then the bottom is cut to form a cage blank. Step two: The window beam is beveled to create a guide slope that contacts the rolling elements. The guide slope of the cage meets a first surface roughness requirement, while the remaining non-working surfaces of the cage only need to meet a second surface roughness requirement, which is higher than the first. Step three: A protective component is placed over the window holes of the cage blank, with the coverage area of ​​the protective component being larger than the beveled surface after finishing. Step four: The covered cage blank undergoes two shot blasting treatments. If the surface quality of the cage does not meet the requirements, the surface treatment process parameters need to be adjusted for a third shot blasting treatment. This method solves the problems of low efficiency and high cost associated with the existing all-around finishing process for bearing cages.

The utility model discloses an improved device for a die splitting position of a nodular cast iron pipe fitting casting bellmouth end face die, which comprises a nodular cast iron pipe fitting casting, and a formed outer die sand mold is wrapped outside the nodular cast iron pipe fitting casting and is used for forming the external shape of the nodular cast iron pipe fitting casting; a sand core is placed in an inner cavity of the nodular cast iron pipe fitting casting; and a positioning core head is arranged between the formed outer mold sand mold and the sand core and is used for positioning and supporting the sand core, so that the accurate position of the sand core in a casting mold is ensured. The parting surface of the mold is moved outwards, so that a casting blank is moved to the edge of the end surface of the casting, the inner cavity and the end surface of the casting are formed by the sand core, the sand core is a resin sand core, the surface of the sand core is coated, and the quality and smoothness of the end surface of the casting and the surface of the inner cavity are better. Blanks and flashes are concentrated on the edge of the casting at the parting position of the casting, polishing is convenient, and time and labor are saved.

The utility model discloses a crushing tooth for a coal crusher with high block proportion, which comprises a coal crushing roller body, the crushing tooth is arranged on the coal crushing roller body, the coal crushing roller body is formed by sequentially sleeving a plurality of tooth roller units on a screening machine main shaft, the tooth roller units are disc-shaped, the crushing tooth is in a circular truncated cone shape, and the crushing tooth is arranged on the screening machine main shaft. And all the circular-truncated-cone-shaped crushing teeth are bent in the same direction along the circumference of the coal crushing roller body. By changing the tooth-shaped structure of the tooth roller, the size and the direction of crushing force can be better controlled, the proportion of crushed blocky coal is effectively increased, the tooth-shaped structure has the function of avoiding crushed small blocks, secondary crushing of the small coal blocks is reduced, over-crushing is reduced, and the fine powder rate is reduced. In addition, the coal breaking roller body is of a split tooth roller structure, the blank casting and machining difficulty is reduced, the production cost can be greatly reduced, and meanwhile, the tooth roller of the coal breaking machine is convenient to install and replace.

The invention discloses a rolling mill stand resin sand gravity casting liquid weight calculation method, and relates to the technical field of equipment manufacturing, and the method comprises the following steps: selecting the linear shrinkage rate epsilon L of a casting in different directions according to the wall thickness and length of the casting; obtaining a resin sand box expansion rate fv based on measured data; adjusting the process blank model based on the linear shrinkage rate epsilon L and the resin sand box expansion rate fv; a pouring pipeline model and a riser model are designed based on the process blank model, and the volume of the process blank model, the volume of a pouring pipeline and the volume of a riser are obtained based on three-dimensional design software; and calculating the mass of molten iron required for pouring based on the adjusted volume of the process blank model, the volume of the pouring pipeline and the volume of the riser. According to the method, epsilon L and fv are obtained through a standardization method, cost reduction, energy conservation and zero mold testing are achieved, and the problems that in an existing rolling mill stand resin sand gravity casting technology, the precision of an empirical coefficient method is low, the difference of linear shrinkage in different directions is not considered, the box expansion rate is not quantized, and the accuracy is poor are solved.

The invention relates to the technical field of thrust rod connecting ball heads, in particular to a machining-free corrugated handle connecting ball head connecting piece and a casting process and system thereof. The problems of low precision and high cost caused by the fact that ripples need to be machined through a lathe after casting are solved. The method is characterized in that the mold shrinkage rate (preferably 0.5%) is accurately calculated, and the mold machining precision is controlled, so that a high-precision casting blank is obtained; the molding sand quality, the molding sand moisture and the compaction rate are adjusted; molding parameters are adjusted, specifically, the sand shooting pressure ranges from 2.3 MPa to 2.5 MPa, the extrusion pressure ranges from 13 MPa to 15 MPa, and the mold closing thrust is 1800 MPa; the smelting carbon equivalent is controlled to be 4.5%; the pouring temperature ranges from 1410 DEG C to 1340 DEG C; and a customized go / no-go gauge detection tool is used for detection. The corrugated handle part is formed through one-time precision casting, subsequent machining is omitted, the size out-of-tolerance outflow proportion is reduced to 3% from 10%, the cost is reduced, and the product quality and consistency are improved.

The invention discloses a large cylinder sleeve mud core modeling metal mold, which relates to the technical field of molds, and specifically comprises a mud core head section mold, a riser section mold and a blank inner hole section mold, and the riser section mold is positioned between the mud core head section mold and the blank inner hole section mold; the dead head section mold is connected with the mud core head section mold and the blank inner hole section mold through bolts, the dead head section mold and the mud core head section mold are positioned through a positioning device, and the dead head section mold and the blank inner hole section mold are positioned through a positioning device. The large cylinder sleeve mud core modeling metal mold has the advantages of being high in rigidity, not prone to oxidation and the like, not prone to deformation and damage in the production process and good in mold surface quality precision. Produced casting blanks are less in surface burnt-on sand and good in surface quality; the production time influenced by mold repairing is saved, the product yield is increased, the reinforcing rib plates are arranged between the mold parting surfaces, the overall bearing and rigidity of the mold are improved, and the service life of the mold is prolonged.