1072results about How to "Guarantee molding quality" patented technology

The invention discloses an installation construction method for a large all-steel formwork at the internal corner of a shear wall. The installation construction method comprises the following steps of: (1) installing an internal corner steel formwork at the internal corner of the wall, wherein the internal corner steel formwork comprises two vertical steel plates which are welded at a right angle, multiple reinforcing ribs are connected between the two vertical steel plates at intervals, two connecting steel plates are respectively welded at the two sides of each reinforcing rib, and each connecting steel plate is respectively and vertically connected with the vertical steel plate at the corresponding side; (2) respectively connecting and installing a groove type steel plate at the outer side edge of each connecting steel plate along the vertical direction through a lead screw; (3) installing large steel formworks at the two sides of the internal corner of the wall; (4) connecting formwork back ribs on the large steel formworks at intervals; (5) connecting internal corner rolling grooves corresponding to each reinforcing rib with holes arranged on the reinforcing ribs through internal corner hook bolts; and (6) pouring concrete into the shear wall. According to the installation construction method provided by the invention, a formwork system at the internal corner of the shear wall firmly and reliably forms a stable integral system.

The invention provides a high-temperature alloy additive manufacturing method. The high-temperature alloy additive manufacturing method comprises the following steps: a raw material high-temperature alloy powder is prepared, the fluidity is controlled to be less than or equal to 25s / 50g; a three-dimensional model of a high-temperature alloy component to be formed is treated in a slicing mode, andthe preset slicing thickness is set; the scanning path of the high-temperature alloy component is planned, and a preset deflection angle is set during layer-by-layer scanning; a laser selective melting process parameter is set, and meanwhile a substrate is preheated; a layer of raw material high-temperature alloy powder with the thickness of the preset powder thickness is evenly laid on the substrate through a powder spreading mechanism, a laser beam is used for rapidly melting the powder according to the slice shape and the scanning path, the powder is stacked layer by layer until the high-temperature alloy component is completely formed, and the high-temperature alloy component is placed for 2-3h in a forming cavity after printing is completed; and heat treatment on the taken-out high-temperature alloy component is done. The near-net forming of the high-performance high-temperature alloy component can be realized, the comprehensive mechanical property of a printing component reachesthe level of a forge piece, and thus the comprehensive mechanical property of the high-temperature alloy component is improved.

The invention discloses a spiral stirrup continuously and synchronously machining machine and a machining method. The machining machine comprises a machine body seat, a spiral stirrup machining device and a monitoring device. The spiral stirrup machining device comprises a rotary workbench, a stirrup winding mechanism, a feeding mechanism and a cutting mechanism. The stirrup winding mechanism comprises a stirrup twining frame, a rolling type bending mechanism and a screw pitch axial feed mechanism. The monitoring device comprises a control device, a counting unit and a rotating speed measuring unit. The machining method comprises the first step of determining the number of winding shafts and the installation position, the second step of adjusting the positions of the winding shafts, the third step of feeding and positioning stirrup material, the fourth step of forming spiral stirrups and the fifth step of cutting spiral stirrups. The machining machine is simple in structure, continuous machining of spiral stirrups is achieved, and the production efficiency is high; meanwhile, the concrete constraining force of beam columns of buildings can be improved through the produced spiral stirrups, and therefore the seismic capacity of the buildings is improved. Practicality is high, and the machining machine and the machining method are low in carbon, environmentally friendly and efficient and save energy.

The invention discloses a method for forming a J-shaped beam structure composite workpiece by open type soft tooling; fiber-reinforced rubber open type soft tooling can be formed by a metal mold, the formed soft tooling can be one part of a formed mold for completing the forming process of the composite produced part. Compared with a traditional core mold forming method, the soft tooling can uniformly and accurately transmits pressure applied by an autoclave, out-of-tolerance of thickness of the composite workpiece can be avoided, the soft tooling is thinner in wall thickness, thermal hysteresis effect can be avoided, the forming quality of the workpiece can be effectively guaranteed by the above two points, and the qualified rate and the efficiency of production can be improved. The soft tooling can be used repeatedly, the reproduction is also more convenient, and the production cost and the manufacturing cycle are effectively reduced, and the production efficiency is improved.

The invention discloses a fully-automatic die pressing lid maker, which comprises a rack, an extrusion module, a pressing module and a feeding and discharging module. The extrusion module is provided with an extrusion port. A metering pump is arranged on the extrusion module. The pressing module comprises a rotating main body, a rotating support and a driving device. A high-speed forming mold is arranged on the rotating main body. The rotating support is arranged between the rack and the rotating main body. The feeding and discharging module is arranged between the extrusion module and the pressing module. In such a way, the metering pump is used for accurately controlling feeding, and a high-frequency valve is matched to drive a piston head to move to accurately feed a blank. In addition, the rotating support is arranged between the rack and the rotating main body, and is used for enlarging the support area of the rotating main body, so that the rotating main body can rotate more stably. The fully-automatic die pressing lid maker is particularly applied to a heavy large-sized machine. Therefore, the forming quality of a bottle lid is ensured, a defective rate is lowered, and more economic benefits are created for an enterprise.

The invention discloses a top-down construction method of a large underground structure outer wall, comprising the following steps: constructing a supporting pile; borrowing earth; binding a first section of outer wall and ring beam reinforcing steel bars, wherein the ring beam reinforcing steel bars are respectively fixedly connected with reinforcing steel bars in the first section of outer walland the reinforcing steel bars in the supporting piles; raising templates; pouring concrete, wherein the first section of outer wall, the ring beam and the supporting piles are integrated as a whole;and repeating the construction of borrowing earth, binding reinforcing steel bars, raising templates, pouring concrete until the bottom surface of the last section of outer wall reaches the designed elevation. The adoption of a pile hanging technique in the invention ensures safe construction, the adoption of a double anti-leakage technique ensures no leakage inside the outer wall, the adoption ofa fast molding technique accelerates the program progress, and the application of sizing steel templates ensures the appearance quality of the concrete thereby achieving a good effect.

The invention provides a carbon fiber composite foam core sandwich structure wind tunnel fan blade. The wind tunnel fan blade is characterized in that a skin is arranged at the outer part; the internal front end of the skin is connected to a front edge reinforcing area; the internal middle part of the skin is connected with a main bearing beam; an internal space defined by the skin, the front edge reinforcing area and the main bearing beam is filled with a foam core material; the skin comprises an inner skin and an outer skin; the outer skin is laid and adhered to the surface of the inner skin; the thickness of the main bearing beam is changed from 8-10 mm at the root part of the blade to 2-4 mm at the tip of the blade; the thickness of the front edge reinforcing area is 2-5 mm, the thickness of the inner skin is 2-5 mm, and the thickness of the outer skin is 1-3 mm. A molding method comprises the following steps: (a), pasting a blade handle with the foam core material; (b), feeding prepreg; (c), performing paving and glue suction compaction on the front edge reinforcing area and the main bearing beam; (d), performing paving and glue suction compaction on the inner skin; (e), solidifying; (f), molding the outer skin. According to the invention, the high-performance wind tunnel fan blade can be produced, and the use requirements under low-temperature, high-pressure, high-humidity and normal-temperature vacuum simulated climate environments can be met.

The invention discloses a heating layer of a megawatt-grade wind power blade mould and a heating method thereof. The heating layer is arranged between an internal structure layer and an external structure layer that are formed on the surface of the mother mould of the mould; the invention is characterized in that the heating layer comprises at least three sections of heat conducting layer; each section of heat conducting layer is plainly paved at the corresponding positions of the blade tip, the middle part of the blade and the blade root at equal distance in the form of parallel arrangement by a plurality of guide copper pipes that bend into S shape; two ports of the guide cooper pipe extend out of the surface of the external structure layer and is connected with a heating device arranged externally; the heating method comprises the following steps: hot water is led into the heating layer cyclically, so as to meet the circulation mode of water of hot curing of wind power blade products; the hot water flows on the surface of the mould continuously, cyclically and repeatedly, thus meeting the temperature requirement of wind power blade products when in curing. The arrangement of the heating layer improves the moulding quality of large blade products; the dead weight of the mould is reduced, the production cost is low, and the heating method is safe and stable and is easy for application.

The invention relates to a stretch-bending molding process of an angle steel component of a vehicle body and mainly aims to scientifically and rationally overcome the defects of overlarge rebound modulus and section bending deflection of workpieces and the like during the stretch-bending molding of the angle steel component of the vehicle body. The process realizes the emulation of pretension and post-tension corresponding to the minimum rebound modulus, provides a computing formula for the initial length of profiles and a trajectory model of a clamp, improves the forming quality, precision and work efficiency of a stretch-bending workpiece and the manufacturing quality of vehicle steel structure, reduces the manufacturing and maintenance cost, overcomes stretch-bending defects and provides basis for the stretch-bending molding precision control of profile parts. The process initially establishes a mathematical model for length rebound modulus of a multi-curvature profile, can precisely determine the initial length of a blank profile of parts, determines the optimal pretension and post-tension by a simulation method and precisely determines the trajectory of the clamp by establishing a multi-curvature profile stretch-bending module, thereby obtaining the ideal forming quality of the formed profile.

The invention discloses a device for filling stuffing into flour dough and sealing the flour dough. The device comprises a rack, wherein the rack is longitudinally provided with a filling device, a material rotating disk, a material opening and closing switch, a sealing package pinching cutter device, a delivery device and a flour dough height regulating device in sequence; the material rotating disk, the material opening and closing switch and the sealing package pinching cutter device are provided with material channels; and a driving device controls lifting motion and synchronous on and off of the sealing package pinching cutter device, and lifting motion of the flour dough height regulating device. According to a method for filling the stuffing into the flour dough and sealing the flour dough, the driving device controls the connection and coordination of lifting of the sealing package pinching cutter device, opening and closing of each blade, rotary feeding of the material rotating disk and filling of an air cylinder accurately. With the adoption of the device and the method, stuffing filling and sealing of the flour dough can be integrally completed at a stage, the sealing is completed by synchronized actions of upper sealing of the flour dough and fixing of the outer diameter of the lower part, the forming quality of a product can be ensured, and the production cost is reduced.

The invention discloses plasma 3D printing remanufacturing equipment and method for a train wheel. The plasma 3D printing remanufacturing equipment consists of a monitoring system, a plasma beam processing system, a machining device for machining a train wheel to be repaired, a triaxial moving mechanism used for driving the machining device to move and a horizontal printing platform used for placing the train wheel to be repaired, wherein the plasma beam processing system consists of a plasma generator, a printing position adjusting device, an air supply device and a powder feeder; and the monitoring system comprises a horizontal movement controller, a temperature detection unit, a distance detection unit, a printing distance adjustment controller and a rotation controller, and the temperature detection unit and the printing distance adjustment controller constitute a temperature adjustment and control device. The plasma 3D printing remanufacturing method comprises the following steps: firstly, detecting defects of the train wheel; and secondly, repairing the train wheel. The plasma 3D printing remanufacturing equipment is reasonable in design, simple and convenient to operate, high in efficiency and good in using effect, the repair process is directly carried out in the atmospheric environment without a closed molding room, the repaired train wheel is good in quality, and the repair efficiency is high.

The invention provides an air bag forming method of a composite material part with a T-shaped reinforced web structure. The method comprises the steps of mounting a metal frame part in an air bag forming mold, laying up an air bag tooling on the surface of a cavity formed by the metal frame part and the air bag forming mold, sealing the outer layer of the air bag forming mold by a vacuum bag in a vacuum manner, forming the air bag tooling in an autoclave, and obtaining the composite material part with the T-shaped reinforced web structure by use of the molded air bag tooling. According to the method, pressure applied to the autoclave can be uniformly and accurately transferred, the thickness tolerance phenomenon during manufacturing of the composite material can be avoided, and the thermal lag effect of the T-shaped rib part can be avoided, therefore, the forming quality of a product can be effectively ensured, the qualified rate and the production efficiency are improved, the molded surface of the product has high quality, and the production cost and the manufacturing cycle can be effectively reduced.

The invention provides an environmentally-friendly automotive trim composite material and a preparation method thereof. The automotive trim composite material comprises a surface layer, a foaming layer, a hot melt glue layer and a skeleton structure layer, wherein the surface layer is a TPU (Thermoplastic Polyurethanes) film layer, a TPO (Thermoplastic Polyolefin) film layer, a PU (Poly Urethane) film layer, a PP (Propene Polymer) film layer or a genuine leather layer; the foaming layer is a PP foaming layer, a PPF foaming layer, a PU foaming layer or a PE (Poly Ethylene) foaming layer; the hot melt glue layer is a TPU hot melt glue layer, an EVA (Ethylene-vinyl Acetate Copolymer) hot melt glue layer, a PE hot melt glue layer, a PA (Poly A) hot melt glue layer or other hot melt glue layers; the skeleton structure layer is made of a glass fiber modified PP composite material, a carbon fiber modified PP composite material, or an ABS (Acrylonitrile Butadiene Styrene) modified PP composite material. According to the environmentally-friendly automotive trim composite material and the preparation method thereof provided by the invention, the surface layer with the foaming layer is glued with a skeleton structure through an environmentally-friendly hot melt glue, so that the gluing degree is good, the rejection rate is low, the product forming quality is effectively ensured, and the manpower is saved; the product is wear-resisting, high in tearing strength and dimensional stability, not easy to strip, attractive in appearance, and environmentally-friendly in production process without pollution; the product can be recycled.

The invention discloses a side core-pulling mechanism. The side core-pulling mechanism comprises a shovel bade and a slide block which are in sliding fit, wherein an ejector pin hole communicated with a mould cavity is formed in the slide block, an ejector pin capable of moving back and forth in the ejector pin hole is arranged in the ejector pin hole; the ejector pin at least comprises a front section and a rear section, wherein a return spring positioned between the rear section and the slide block sleeves the front section; when the side core-pulling mechanism is in a mould closed state, the rear section can contact with the bottom surface of a slide slot, and the front section can contact with a plastic part in the mould cavity; in a mould opening process of the side core-pulling mechanism, the rear section gradually drops out from the slide slot along with the movement of the shovel base, so that the front part is kept to contact with the plastic part in the mould cavity. The invention further discloses an injection mould. In a mould opening process of backwards dropping out the slide slot, the plastic part is held by the ejector pin to prevent the plastic part from being deformed due to adhesion of the plastic part and the slide block, so that the molding quality of the plastic part is guaranteed, and the qualified rate of the products is increased.

The invention provides a casting mold and forming method for a box body of a gearbox and belongs to the technical field of liquid formation of metal. The forming method comprises the following steps that precoated sand is used for core shooting, so that precoated sand blocks are manufactured, then an outer precoated sand mold layer is formed by splicing the precoated sand blocks, and the outer precoated sand mold layer and a sand core are used for forming a casting cavity of the box body of the gearbox; and finally the box body of the gearbox is manufactured through the casting mold in a low-pressure casting way. According to the specific structure of the casting mold, the sand core is located in the center of the casting mold; the casting cavity is formed in the outer layer of the sand core and mainly formed by the sand core and the outer precoated sand mold layer; an outer resin sand mold layer is arranged on the outer layer of the outer precoated sand mold layer, and the outer precoated sand mold layer and a sand box are connected through the outer resin sand mold layer, so that the casting mold is formed. According to the casting mold and forming method for the box body of the gearbox, the cavity which is formed by the precoated sand and used for large complicated castings is used for low-pressure casting for the first time, the precoated sand blocks are subjected to core shooting under pressure, high-temperature sintering formation is conducted, filling is compact, and the situations that sand filling is incompact and sand adhesion defects are caused due to human factors during resin sand molding are avoided.

The invention provides a tube truss manufacture process which comprises the steps as follows: blanking of steel tubes, positioning of intersecting points of tube fitting, welding of tube fitting, calibrating of members, pre-assembling, and disassembling of the pre-assembled truss, wherein all the manufacturing and processing links are carried out in sequence. The manufacture process has the advantages as follows: the assembly precisions of intersecting ends and intersecting holes are high; the size deviation is small; a truss body can be assembled quickly; the workload of calibration is small; formation of physical appearance is good; workload and time for polishing are greatly reduced; the quality of construction and formation can be guaranteed; smoothness and progression of all manufacture links are guaranteed; total construction period is guaranteed; material cost of manufacturing of the tube truss can be saved; inputs of manpower and goods and materials are saved; and economical effects of production are improved.

The invention discloses a plasma 3D fast forming and remanufacturing method and equipment of train wheels. The equipment comprises a monitoring system, a plasma beam machining system, a machining device for machining to-be-repaired train wheels, a three-axis moving mechanism for driving the machining device to move and a horizontal printing platform for placing the to-be-repaired train wheels. The plasma beam machining system comprises a plasma generator, a gas supply device, a feeding device and a printing positioning adjusting device. The monitoring system comprises a horizontal movement controller, a temperature detecting unit, a distance detecting unit, a printing distance adjusting controller and a rotation controller, wherein the temperature detecting unit and the printing distance adjusting controller form a temperature adjusting and control device. The method includes the steps of firstly, detecting train wheel defects; secondly, repairing the train wheels. The plasma 3D fast forming and remanufacturing method and equipment has the advantages that the equipment is reasonable in design, simple to operate, high in efficiency, good in use effect and high in repairing efficiency, a closed forming room is not needed, the repairing process is directly performed under an atmospheric environment, and the repaired train wheels are good in quality.

The invention provides a stamping and molding process of automobile roof covers. In a process of drawing and forming, a flanged hole is formed in a blank line; the flanged hole can be used as a positioning hole in the subsequent process; the position of the flanged hole can be used as waste and cut in the subsequent process. The invention also provides a stamping die. The stamping and molding process of the automobile roof covers can improve the positioning accuracy in the process of stamping and molding the automobile roof covers.

The invention discloses a prestressed concrete hollow square pile comprising a plurality of independent main steel reinforcements. Both ends of each main steel reinforcement are respectively fixedly connected with square end plates; the main steel reinforcements are externally sleeved with steel reinforcement cage racks; each steel reinforcement cage rack comprises a spiral steel reinforcement, and the spiral steel reinforcement is welded with a plurality of auxiliary steel reinforcements; concrete is poured outside the main steel reinforcements and the steel reinforcement cage racks and is combined with the main steel reinforcements and the steel reinforcement cage racks into an integral square pile; and the center of the integral square pile is provided with a central circular hole penetrating through an integral square pile body. The invention aims at providing the prestressed concrete hollow square pile which has the advantages of good molding quality, high single-pile bearing capacity, undamaged steel reinforcement framework before the steel reinforcement framework is used, convenient production, good horizontal anti-bending bearing capacity, high shearing resistant property, convenient stacking and difficult knock damage during pile hoisting, transportation and transferring. The invention also aims at providing a production method of the prestressed concrete hollow square pile.

The invention discloses a special steel formwork for a combined stairway of a high-rise building and an assembly method of the special steel formwork. The special steel formwork comprises two mutually parallel stairway beams, horizontal poles are arranged between the stairway beams, two ends of each horizontal pole are perpendicularly connected with the stairway beams respectively, a stepping vertical pole is perpendicularly arranged on the side wall of each stairway beam and fixed to the stairway beam, horizontal poles are placed at two ends and the center of each stairway beam respectively, angle steel switchover pieces are attached to the side walls and the bottoms of the horizontal poles and cling to the stairway beams, U-shaped fasteners penetrate the angle steel switchover pieces and the stairway beams to serve as fixing parts, the stepping vertical poles are perpendicularly fixed outside the stairway beams, a horizontal positioning mechanism is arranged between each stepping vertical pole and the corresponding stairway beam, the bottom of each stepping vertical pole is connected with a baffle, angle steel switchover pieces are arranged on the baffles, and rib plates and fixing pipes are welded on the baffles and used for enhancing the strength of the baffles and fixing lateral timber formworks. By the aid of an assembly structure, deformation of concrete can be avoided after forming, and the quality of the stairway is ensured.

The invention discloses plasma 3D printing remanufacturing equipment and method for a mold. The equipment comprises a monitoring system, a plasma beam processing system, a machining device for machining a to-be-repaired mold, a horizontal printing table for accommodating the to-be-repaired mold and a temporary fixing element for fixing the to-be-repaired mold temporarily, wherein the plasma beam processing system comprises a plasma generator, a printing position adjusting device, a gas supply device and a powder feeder; the monitoring system comprises a horizontal motion controller, a temperature detection unit, a distance detection unit, a printing distance adjusting controller and a rotation controller, and the temperature detection unit and the printing distance adjusting controller constitute a temperature regulation device. The remanufacturing method comprises steps of 1, mold defect detection and 2, mold repair. The plasma 3D printing remanufacturing equipment and method for the mold have the advantages that the design is reasonable, the operation is simple, convenient and high in efficiency, the use effect is good, a molding cavity is not needed to be closed, a repair process is performed directly in an atmospheric environment, and the quality of the repaired mold is good.

The invention relates to a construction method and a double-layer formwork structure for a cast-in-situ slope roof. The double-layer formwork structure comprises a supporting rod system, a formwork keel, a bottom formwork, a surface formwork and counter-pull positioning waterproof bolts. The bottom of the formwork keel is fixedly supported by the supporting rod system; the bottom formwork is laid on the upper surface of the formwork keel, the surface formwork is parallel to the bottom formwork, and a distance between the surface formwork and the bottom formwork is equal to the thickness of a concrete pouring layer of the slope roof; the bottom formwork and the surface formwork are positioned through the counter-pull positioning waterproof bolts; the surface formwork is formed by a plurality of segmented surface formworks at intervals, and a trough formed by ends of the adjacent segmented surface formworks and the bottom formwork serves as a vibration tamping trough for segmented pouring of concrete. By adoption of the double-layer formwork structure and a segmented concrete pouring and vibration tamping method, the problem of proneness to slipping of concrete in construction of the slope roof is solved, structural compactness, high section size precision and high surface quality of concrete after pouring and tamping are achieved, and the construction method is simple and feasible.

The invention discloses a liftable supporting leg type elevator shaft construction platform and method. The construction platform comprises an outer frame, cross beams arranged in the outer frame and a construction platform body consisting of steel plates laid on the outer frame and the cross beams and is characterized in that sleeves are welded to two ends of each cross beam, slidable variable-cross-section supporting legs are arranged in the sleeves, and a group of connecting rods is vertically arranged on each cross beam. Due to the fact that the construction platform is arranged on the structural beams, the height difference of the variable-cross-section supporting legs enable the construction platform to be lower than structural beam plates, reinforcement of an inner side formwork of an elevator shaft is facilitated, and concrete forming quality is ensured. Therefore, the liftable supporting leg type elevator shaft construction platform is simple in operation, quick and convenient to construct and safe and reliable in use, can be constantly lifted according to the height of a constructed building, can effectively improve construction efficiency and shorten a construction period and can be repeatedly used, and construction cost can be saved.

The invention discloses a method for realization of co-curing of a reinforcing rib web composite produced part by high strength soft tooling, rubber produced soft tooling is formed by use of a metal false piece, and the composite produced part is formed by use of the soft tooling. The soft tooling self is provided with a carbon fiber reinforced layer, the size of the product formed by use of the soft tooling can be guaranteed, outside pressure and temperature can be better transferred to the composite produced part, uneven partial pressure, heating rate hysteresis and other phenomena of the produced part can be avoided, the soft tooling is provided with a support structure, paving and preloading and other operation of the produced part can be completed on the soft tooling, the relative position precision and shape size of each part of the formed produced part can be ensured, the soft tooling can be used repeatedly, the reproduction is also more convenient, and the production cost and the manufacturing cycle are effectively reduced.

This invention provides a punch comprising: a center punch and an outer punch surrounding the outer periphery of the center punch, both of which being slidable and capable of compressing; and relative position restriction means for restricting a relative position of the center and outer punches, the relative position restriction means being configured to restrict a first position in which a punch tip of the center punch is protruded from a punch tip of the outer punch and a second position in which the punch tip of the center punch is substantially coincident with the punch tip of the outer punch, and being configured to fail to restrict a third position in which the punch tip of the center punch is retracted in the punch tip of the outer punch, as well as a rotary compression molding machine provided with the double-structured punch.

The invention provides a plastic injection mold for a composite cap overturning bottle cap. The plastic injection mold comprises a mold frame structure assembly, a runner material releasing assembly, a molding assembly, a front mold ejecting out assembly, a thread releasing mechanism assembly and a mold opening sequence control assembly. A gating system is designed into the manner that feeding is carried out from the center of a product through a pin-point gate, and the mod is provided with eight cavities. The ejecting out manner that gas enters from a gas nozzle to carry out gas ejecting is finally adopted. According to the technical scheme, the front mold ejecting out assembly, the thread releasing mechanism, the read mold ejecting mechanism and the improved type mold structure are designed oriented to the problems that in an existing mold technology, an overturning cap sticks to a front die and cannot be completely ejected out in a full-automatic manner in the ejecting out process, manual auxiliary mold releasing is needed, and consequently the mold production efficiency is low; thus, defect-free automatic molding production of the product is achieved, and the product forming quality is effectively ensured; and the plastic injection mold is reasonable in structure design, stable in work, safe and reliable.

The invention discloses plasma 3D printing remanufacturing equipment and method for a roller. The equipment comprises a monitoring system, a plasma beam processing system, a machining device for machining a to-be-repaired roller and a horizontal printing table for holding the to-be-repaired roller, wherein the plasma beam processing system comprises a plasma generator, a printing position adjustment device, a gas supply device and a powder feeder, and the printing position adjustment device comprises a horizontal moving device and a printing distance adjustment device; the monitoring system comprises a horizontal moving controller, a temperature detection unit, a distance detection unit, a printing distance adjustment controller and a rotation controller, and the temperature detection unit and the printing distance adjustment controller form a temperature control device. The remanufacturing method comprises steps as follows: 1, roller defect detection; 2, roller repair. The plasma 3D printing remanufacturing equipment is reasonable in design, simple and convenient to operate, high in efficiency and good in use effect, a forming chamber is not required to be closed, the roller is repaired directly in the atmospheric environment, and the quality of the repaired roller is good.

The invention relates to a composite foam sandwich structure and a forming method thereof. The method includes the steps that lower skin prepreg is laid, then curing is conducted, and a lower skin prefabricated part is obtained; a foam core material is divided into multiple blocked foam core materials, then the surface of each blocked foam core material is sequentially wrapped by a layer of adhesive film and a layer of carbon cloth prepreg, vacuum curing is conducted, and multiple foam core material prefabricated parts are obtained; and the surface of each of the foam core material prefabricated parts is wrapped by a layer of adhesive film, the multiple foam core material prefabricated parts wrapped by the adhesive films are spliced, a dimensional foam prefabricated part is obtained and put in the lower skin prefabricated part, then upper skin prepreg is laid on the surface of the dimensional foam prefabricated part, overall co-bonding forming is conducted, and a composite foam sandwich structure is obtained. By means of the method, under the premise that the weight of the product is reduced, the strength of the dimensional foam core material is improved, and the problems that thefoam sandwich structure is likely to be collapsed, and product inner quality defects are caused are solved.

The invention discloses a method and a die for molding a backseat side cover plate of an automobile. The method for molding the backseat side cover plate of the automobile comprises the following steps of: blanking and making a blank; performing drawing forming, namely performing primary drawing and secondary forming, wherein the primary drawing is used for the initial molding of a convex hull and the molding of a plate part of the backseat side cover plate, and the secondary drawing is used for the final molding of the convex hull; trimming and punching; and flanging, and performing hole flanging. The die for molding the backseat side cover plate of the automobile is used for primary drawing in the method for molding the backseat side cover plate of the automobile, and comprises an upper die holder, a lower die holder, an upper die, a lower die, a lower die support, a positioning block and an elastic device. According to the method and the die for molding the backseat side cover plate of the automobile, the die and a molded curved surface of the plate part of the blank of the backseat side cover plate are matched to resist the relatively large internal stress generated by a convex hull structure in the drawing process, so that the blank of the backseat side cover plate is reliably positioned, the positioning failure which is caused by the relative motion of the blank of the backseat side cover plate and the die can be effectively prevented, and the molding quality is ensured; and the product has high structural strength, and can meet the requirements of fatigue strength of vehicle bodies.