1210results about How to "Guaranteed flatness" patented technology

The invention relates to the technical field of batteries, in particular to a battery cell cover plate and a battery cell. The battery cell cover plate comprises a pole assembled on a cover plate main body; the riveting piece is provided with a connecting hole, and the pole is riveted in the connecting hole and then is welded with the riveting piece; the connecting hole is of a stepped hole structure provided with a first stepped part, a second stepped part and a third stepped part which are sequentially arranged in the axial direction, and the hole diameters of the first stepped part, the second stepped part and the third stepped part are sequentially decreased. In the thickness direction of the cover plate main body, the height dimension h of the first step part is 0.2-0.5 mm; and the distance a between the inner wall of the first step part and the inner wall of the second step part is 0.5-1mm. Welding marks formed by a welding process can be prevented from protruding out of the upper surface of the riveting piece, so that the flatness of the riveting piece is guaranteed; the avoiding groove meeting the requirement of the welding process is formed in the riveting piece, and the influence of the welding process on the shape and size precision of the riveting piece is improved, so that the appearance yield of the battery cell cover plate is improved, and the safety and yield of the battery cell are improved.

The invention relates to the technical field of semiconductor device packaging, in particular to a packaging structure, a packaging test method and a packaging test system of a large-scale photon chip. The upper surface of the substrate is connected with a chip layer through a first bonding structure, the chip layer comprises a plurality of optical chips, adjacent first and second side edges of the optical chips are relatively parallel to corresponding side edges of the other two adjacent optical chips, and a first gluing area is formed by filling a gluing material between the two oppositely arranged side edges; the outward side edge of the photon chip is bonded with a bonding material which extends to form a second bonding area, and the silicon adapter plate is arranged corresponding to the first connecting area of the optical chip; and a first wiring layer is arranged between the lower surface of the silicon adapter plate and the cementing layer. The splicing structure provided by the invention can reduce the preparation difficulty of large-scale optical chips.

The invention relates to the technical field of vibrating screen mesh welding, and discloses a welding device for vibrating screen mesh machining, which comprises a rack, and a circular metal welding disc is arranged on the rack; the vertical rod is fixed on the top surface of the rack; the lifting seat is arranged on the vertical rod in a lifting manner; the mounting seat is fixed at one end, far away from the vertical rod, of the lifting seat; the rolling welding structure is arranged on the mounting seat, and the rolling welding structure comprises a roll welding module; and the flattening structure is arranged on the mounting seat, and the flattening structure is arranged right opposite to the metal welding disc. By pressing the middle of the screen through the flattening plate and comprehensively flattening the outer edge of the screen through the four flattening plates distributed in the circumferential direction in an array mode, the overall flatness of the screen in the welding process is further guaranteed, and reliable quality guarantee is provided for subsequent use of the screen.

The invention provides laser cutting feeding equipment, and relates to the technical field of laser cutting equipment, the laser cutting feeding equipment comprises a feeding connecting piece, and the feeding connecting piece is provided with a row of lifting supporting pieces; two magnetic control pieces are respectively mounted at the bottoms of the row of lifting support pieces; the two rows of magnetic control pieces are respectively arranged on the feeding connecting piece; the row of lifting supporting pieces are used for supporting to-be-machined plates correspondingly. A path control piece is mounted on the feeding connecting piece; the path control piece is used for controlling the row of lifting supporting pieces to descend to prevent shielding, can support a to-be-machined plate in a rolling mode, prevents abrasion, can automatically descend, prevents adhesion of cutting melt and avoids deformation caused by laser heating, and solves the problems that a feeding sawtooth plate in existing laser cutting feeding equipment is prone to scratching the plate, and the production efficiency is high. And a large number of impurities are easily adhered to the sawtooth plate, so that the sawtooth plate is inconvenient to automatically return to a cutting position according to a cutting path.

The invention belongs to the technical field of digital printing machines, in particular to an anti-deviation device for a guide belt of a digital printing machine, and provides the following scheme that the anti-deviation device comprises a mounting frame, a guide roller is rotationally arranged on the mounting frame, the guide belt is rotationally arranged on the guide roller, a first electric guide rail is mounted on the mounting frame, and the first electric guide rail extends in the moving direction of the guide belt; a movable frame is connected to the first electric guide rail and extends in the direction perpendicular to the first electric guide rail, two suction cup boxes capable of horizontally moving are arranged on the movable frame, the tops of the suction cup boxes are in sliding contact with the bottom of the guide belt, and sensing units are arranged at the two ends of the movable frame. The suction cup box drives the guide belt to move in the direction away from the sensing unit sending the signals, suction of the suction cup box is cut off until the sensing unit stops sending the signals, deviation correction is achieved through movement of the suction cup box at the bottom of the guide belt, and the situation that the printing operation effect is affected due to wrinkles of the guide belt is effectively avoided.

The invention provides a cloth pressing assembly of dewatering equipment and a control method of the dewatering equipment, the cloth pressing assembly of the dewatering equipment comprises a pressing rod and further comprises a supporting frame, a connecting frame rod is hinged to the supporting frame, the other end of the connecting frame rod is hinged to a connecting rod, the connecting rod is arranged above or below the supporting frame, and the connecting rod can slide in the length direction of the pressing rod along the pressing rod; the driving piece is in sliding connection with the pressing rod through a guide assembly, the extending direction of the guide assembly is parallel to the rotating face of the connecting frame rod, and the guide assembly and the connecting rod are arranged at an angle; the moving path of the driving piece is parallel to the connecting rod, the driving piece drives the connecting frame rod to rotate in the process of driving the pressing rod to slide along the connecting rod, and the connecting rod slides along the pressing rod to drive the pressing rod to slide along the guide assembly. Through the arrangement, one power source can be used for driving the driving piece to move towards the direction close to the filter cylinder, so that the pressing rod is fed towards the direction close to the filter cloth and is pressed downwards, the power source for driving the pressing rod is reduced, the cost of equipment is favorably reduced, and a control system of the cloth pressing assembly is simplified.

The invention discloses a gypsum board suspended ceiling drilling installation robot and method. The robot comprises a movable platform system; the lifting structure system is mounted on the movable platform system and is used for lifting an operation platform at the top of the lifting structure system to a corresponding height for construction operation; the drilling rotary table system is mounted on the operation platform, comprises a rotary table, a motor rotary table part for driving the rotary table to rotate, and an ash and dust removal part, a drilling part and a repairing and spraying part which are uniformly mounted on the rotary table along the circumference, and is used for realizing the functions of drilling, ash and dust removal and repairing and spraying of the gypsum board suspended ceiling; the keel delivery system is used for delivering main keels and auxiliary keels and grabbing gypsum boards; the gypsum board jacking system is used for jacking the gypsum board; and the gypsum board cutting system is used for cutting the gypsum board. According to the device, gypsum board suspended ceiling drilling and mounting are integrated, commands such as gypsum board suspended ceiling drilling and mounting are automatically completed, and the construction efficiency and quality are further improved.

The invention provides an automatic braid labeling machine which comprises a base, the upper surface of the base is fixedly connected with a limiting plate, the upper surface of the limiting plate is fixedly connected with a workbench, the surface of the workbench is fixedly connected with a first supporting rod, and the first supporting rod is fixedly connected to the upper surface of the base; a labeling assembly is arranged on the surface of the workbench and comprises a labeling cylinder arranged above the workbench. A first motor drives a winding wheel to rotate to achieve braid winding, the braid is prevented from slipping by means of anti-slip teeth of a friction chuck, stable and accurate conveying is guaranteed, a linkage transverse rod is driven by related parts to accurately move and rotate, and when the linkage transverse rod is horizontal, a circular ring and the braid are matched to enable a dispensing conical cylinder to output glue in a proper amount, and the range is limited. And the identification sticker accurately falls on the glue dripping position and is pressed by the labeling cylinder and the glue dispensing conical cylinder, so that the labeling quality is improved, the falling of the identification sticker is reduced, the automatic labeling effect is improved, and the braid labeling efficiency is improved.

The invention discloses a textile tensile strength testing device based on artificial intelligence, the textile tensile strength testing device comprises a workbench, hydraulic rods and force measuring sensors, the hydraulic rods are symmetrically fixed on the workbench left and right, and the force measuring sensors are fixed at the output ends of the hydraulic rods. According to the textile tensile strength testing device based on artificial intelligence, the clamping and limiting mechanism is adopted, a textile can be clamped and fixed, so that the stability of the textile is guaranteed, the textile can be straightened in the clamping and fixing process of a placed object in cooperation with the linkage tensioning mechanism, the smoothness of the two ends of the textile is guaranteed, and the tensile strength of the textile is improved. In the detection process, the middle position of the textile fabric can be smoothed in cooperation with a linked smoothing mechanism, so that the flatness of the textile fabric is effectively guaranteed, the accuracy of detection data is further guaranteed, and in cooperation with a protection mechanism, limiting can be achieved when the textile fabric is broken, and the situation that workers are hurt due to the fact that the textile fabric is broken and popped up is avoided; therefore, the use safety of the device is ensured.

The invention relates to the technical field of protective film cutting, in particular to an automatic cutting device for protective film machining, which comprises a bottom plate and a cutting laser head, a lower sliding plate is movably arranged above the bottom plate, a top block is arranged on the upper side of the lower sliding plate in a lifting manner, and a soaking mechanism is arranged in the top block; and an adsorption positioning mechanism is arranged on the upper side of the top block. Through the soaking mechanism and the follow-up jetting mechanism in the soaking mechanism, when the cutting laser head moves to cut the protective film, water can be continuously jetted to the edge cutting position after cutting, so that the water forms a water film at the edge cutting position, and the water film conducts a large amount of heat generated during cutting of the edge cutting position to the area nearby the protective film; and heat can be prevented from being concentrated at the edge cutting position, so that deformation or fragmentation of the edge cutting position caused by excessive concentration of heat at the edge cutting position can be prevented, the flatness of the edge cutting position of the protective film is further improved, and the cutting quality is improved.

The invention relates to the technical field of building doors, and discloses a steel magnetic suspension heat-insulation bulletproof sliding door system which comprises a heat-insulation polyamide door frame and a heat-insulation polyamide door frame installed on the ground. The sliding assembly is pre-embedded in the position, between the heat insulation polyamide door frames, on the ground; the door leaf is arranged on the sliding assembly and located in the heat insulation polyamide door frame; the sliding assembly comprises a water collecting tank body, two lower sliding tank bodies and a permanent magnet magnetic stainless steel rail, under the condition that no electric energy is used, when the door leaf needs to be moved, the door leaf is pushed to move through the handle controller, the door leaf drives the magnetic suspension movement device to move on the outer side of the permanent magnet magnetic stainless steel rail through the connecting beam, and the magnetic suspension movement device moves on the outer side of the permanent magnet magnetic stainless steel rail; the door leaf gets rid of the weight of the door leaf, the door leaf floats in the air and slides without friction, the door leaf is opened and closed in a more labor-saving mode, a user can push the door body to move with small force, and the door is convenient to use and practical.

The invention discloses a tea leaf trimmer with a telescopic adjusting mechanism and a trimming process thereof, and the tea leaf trimmer comprises a holding part for an operator to hold and control; the driving unit is used for driving the pruning machine to perform pruning operation; the pruning cutter is in transmission connection with the driving unit and is used for pruning branches and leaves of the tea leaves; the holding part comprises a frame body, and a supporting plate for supporting a trimmed tea tree is arranged on the frame body; the supporting plate is provided with a plurality of walking units capable of being transversely adjusted in a telescopic mode. The walking unit is in transmission connection with the driving unit, and the trimmer climbs on the surface of a trimmed tea tree after being driven; according to the tea trimmer with the telescopic adjusting mechanism, the traveling unit is arranged on the trimmer, so that the trimmer can crawl on the surface of a trimmed tea tree when the trimmer needs to trim, and manual labor is saved.

The invention relates to the technical field of asphalt concrete paving, in particular to a large-thickness paving device for large-particle-size permeable asphalt concrete.The large-thickness paving device comprises a box body, the bottom of the box body is obliquely arranged, a shell is fixedly installed at the rear end of the box body, and a rectangular hole communicating with the interior of the shell is formed in the side wall of the box body; a rotating shaft is horizontally and rotatably installed in the shell, auger blades are symmetrically and fixedly connected to the rotating shaft in a sleeving mode, a plurality of discharging openings communicated with the interior of the shell are formed in the lower surface of the shell, a driving shaft is rotatably installed at the upper end of the shell, and a driving motor is fixedly installed at the upper end of the shell. An output shaft of the driving motor is fixedly connected with the driving shaft, and a transmission assembly used for driving the rotating shaft to rotate is arranged on the shell. Due to the arrangement of the multiple discharging openings, asphalt concrete can be uniformly paved on a pavement, after the pavement is ironed and compacted, the compactness and flatness of the pavement are guaranteed, and the overall quality of the pavement is effectively improved.

The invention relates to the technical field of mold processing, in particular to a shape processing device for a glass mold, which comprises a mounting flat plate, a power assembly and a positioning assembly, the mounting flat plate is connected with a power assembly; the mounting flat plate is connected with a positioning assembly for clamping a glass mold for positioning; the device further comprises a positioning column, a first spring, a mounting plate and the like. A plurality of positioning columns which are distributed in a rectangular shape are fixedly connected to the mounting flat plate; each positioning column is sleeved with a first spring. And a mounting plate is connected to the plurality of positioning columns in a sliding manner. According to the appearance processing device for the glass mold obtained through the design, when an arc-shaped cavity is polished, the four polishing pieces move towards the periphery to adapt to glass mold cavities of different specifications, the arc-shaped elastic pieces can be unfolded along with movement of the polishing pieces, the arc-shaped elastic pieces are attached to the bottom wall of the cavity of the glass mold, and the polishing effect is improved. And polishing the cavity of the glass mold to be smooth.

The utility model relates to the technical field of brake shoe roller press fitting, in particular to brake shoe roller bushing press fitting equipment. According to the technical scheme, the brake shoe roller bushing press-fitting equipment comprises a back plate, a base, a bottom plate and a pressing plate, the base is installed on the bottom plate, a baffle is installed above the base, a limiting sleeve is installed above the baffle, a push plate is installed in the base, the push plate is elastically installed in the base through a spring, and the pressing plate is installed on the base. A limiting seat and a limiting shaft are arranged on the push plate, a back plate is installed at one end of the bottom plate, an air cylinder is installed on the back plate, and a push rod of the air cylinder is connected with a pressing plate through a connecting rod. According to the utility model, the roller and the bushing can be conveniently limited during press fitting, so that the assembly precision of the roller and the bushing is ensured.

The invention relates to an electric heating anti-icing multi-layer structure based on a copper-clad PI film and graphene. The electric heating anti-icing multi-layer structure sequentially comprises a surface insulating layer, an adhesive film layer, a graphene heating layer, an adhesive film layer and a surface insulating layer, and the graphene heating layer is provided with a copper-clad PI film layer. The method comprises the following steps: etching a copper foil on a polyimide film to obtain an etched copper electrode film; the preparation method comprises the following steps: uniformly dispersing graphene and polyimide resin through vacuum stirring, coating the surface of a polyimide electrode film with the graphene and polyimide resin through a tape casting method, and performing high-temperature curing to obtain a graphene heating layer with smooth appearance and uniform sheet resistance; and molding the heating layer and the composite material through an autoclave to obtain the wing-shaped electric heating anti-icing assembly.

The invention discloses an assembly type building stair mold, and relates to the technical field of stair molds, the assembly type building stair mold comprises a mold mechanism, the side face of the mold mechanism is provided with a transverse steel bar limiting mechanism, and the transverse steel bar limiting mechanism is used for limiting and fixing transverse steel bars in a prefabricated stair. According to the longitudinal reinforcement limiting mechanism, the height of a clamping head is accurately adjusted through a third mounting bolt, the clamping head can be flexibly selected according to the diameter of a longitudinal reinforcement, the mounting height and position of the longitudinal reinforcement can be accurately controlled, the overall positioning accuracy of a reinforcement framework is guaranteed, and then the mechanical property of the prefabricated stair is improved; the sleeve plays a role in protecting the end, inserted into the mold mechanism, of the third mounting bolt, it is avoided that concrete adhesion affects bolt disassembly, meanwhile, due to the detachable design of the third mounting bolt and the modular structure of the steel bar limiting mechanism, the demolding difficulty is lowered, damage to stairs after a component is formed is reduced, and the demolding efficiency and the finished product quality are improved.

The invention discloses an automatic production line for trimming and leveling flying shears, and relates to the technical field of steel plate production. According to the conveying direction of a steel plate, the steel plate trimming and flattening production line sequentially comprises a feeding device, a head cutting and flattening device, a trimming and flattening device, a flying shear device and a stacking device, and a vertical waste collecting mechanism is further arranged on the side edge of the trimming and flattening device; the cropping and leveling device comprises a leveling mechanism and a cropping shear mechanism, the leveling mechanism is used for leveling the steel plate, and the cropping shear mechanism is used for cutting the head of the steel plate; the trimming and leveling device comprises a deviation rectifying mechanism, a longitudinal shearing mechanism and a leveling mechanism, the longitudinal shearing mechanism is used for cutting off redundant side edges of the steel plate, and the leveling mechanism is used for leveling the steel plate; the flying shear device is used for shearing the steel plate according to a preset length; the stacking device is used for stacking the steel plates; and the vertical waste collecting mechanism is used for collecting redundant side edges of the steel. High integration of a plurality of procedures on the steel plate production line is improved, and the production efficiency and the yield are improved.

According to the multi-angle adjusting laser cutting device for the foam, in the working process of the multi-angle adjusting laser cutting device for the foam, the XYZ moving platform drives the cutting mechanism to move above the bearing mechanism so as to cut the foam to be cut on the bearing mechanism. Specifically, to-be-cut foam is placed in a bearing groove formed in a supporting block, an exhaust fan adsorbs the to-be-cut foam through an exhaust pipe, an exhaust cavity and exhaust holes, and therefore the position of the to-be-cut foam in the bearing groove is fixed, and the flatness of the to-be-cut foam is guaranteed. The first driving motor drives the U-shaped bearing block to rotate through the rotating plate and the rotating column. The second driving motor drives the laser cutting head to rotate through the rotating rod and the connecting rod. The control mechanism controls the XYZ moving platform, the first driving motor and the second driving motor to work cooperatively so as to control the laser cutting head to move at multiple angles. And the requirement for multi-angle cutting of the foam is met.

The utility model belongs to the technical field of mirror boxes, and particularly relates to a circular intelligent mirror box. The device comprises a box body which is circular; the mirror door comprises a mirror frame hinged to the box body and a mirror door piece installed on the side, away from the box body, of the mirror frame; the mirror frame is provided with a beauty mirror and a storage rack, the mirror door piece comprises a circular mirror door body and a lamp strip installed on the mirror door body, a clamping groove is formed in the mirror door body, and the lamp strip is installed in the clamping groove of the mirror door body in an embedded and clamped mode. Compared with the prior art, the mirror box disclosed by the utility model integrates the functions of a mirror, illumination, storage and the like on the mirror door, so that the concentration and integration of the functions are realized, and the mirror box is more convenient and smoother to use.

The utility model discloses a fisheye flat gasket stamping die which is characterized in that a fisheye extruding station, a punching station, a blanking station and a guide pin mounting station are correspondingly arranged on a concave die plate, a lower base plate and a lower die plate at the lower end part of the die; the female die plate is further provided with a conical rod mounting station and a guide punching rod avoiding station. And a fisheye extruding mounting station, a punching mounting station and a blanking mounting station which are respectively arranged corresponding to the fisheye extruding station, the punching station and the blanking station are arranged on a stripping template and an upper fixing plate at the lower end part of the die. The stripping template is further provided with a conical rod avoiding station, a guide pin avoiding station and a guide punching rod installing station which correspond to the conical rod installing station, the guide pin installing station and the guide punching rod avoiding station respectively. The punching die is high in punching efficiency, the material utilization rate can be remarkably increased, the high precision of the surface parallelism and planeness of the fisheye flat gasket can be guaranteed, and the punching die can be produced in a large scale.

The invention discloses an adjustable multi-piece wax mould pouring device which comprises a bottom plate, the upper surface of the bottom plate is fixedly connected with a supporting frame, the supporting frame is fixedly connected with a conical barrel, the upper surface of the bottom plate is fixedly connected with a frame body, the lower surface of the frame body is fixedly connected with a first sliding rail, and the first sliding rail is slidably connected with a first electric sliding block; a first hydraulic cylinder is fixedly connected to the lower surface of the first electric sliding block, a first telescopic rod is fixedly connected to the output end of the first hydraulic cylinder, a pressing plate is fixedly connected to the end, away from the first hydraulic cylinder, of the first telescopic rod, a second sliding rail is fixedly connected to the lower surface of the frame body, and a second electric sliding block is slidably connected to the second sliding rail; through cooperation of the multiple hydraulic cylinders, the multiple telescopic rods and the conical barrel, the equipment can be adjusted, adjustment can be conducted according to workpieces of different models and radiuses, various production requirements are met, the special limitation of the equipment is reduced, and the downtime is shortened.

The invention discloses a relay automatic testing machine and a testing process thereof, and the relay automatic testing machine comprises a dual-channel feeding mechanism, a first material pushing mechanism, a first caching mechanism, a second caching mechanism, a testing mechanism, a caching material shifting mechanism, a testing material shifting mechanism, an arm moving mechanism, a transfer mechanism and a discharging mechanism. The testing process comprises the following steps: S1, double-channel feeding; s2, double-station caching is carried out; s3, testing and feeding; s4, testing a relay; s5, caching after testing; and S6, classified discharging is conducted. Double-channel synchronous feeding and double-position cache transfer testing are adopted, the relay testing efficiency is effectively improved, flexible stripping transfer is adopted, transfer cache of multiple sets of relays is achieved, the transfer efficiency is improved, and meanwhile the equipment cost is reduced.

The utility model provides a steel ladle wall magnesium-aluminum-carbon brick pressing device, relates to the technical field of brick processing, and aims to solve the problems that after a brick is pressed by an existing magnesium-aluminum-carbon brick processing device, corners of the brick are easy to collide with a mold in the process of taking the brick out of the mold for firing due to poor plasticity, and the brick is not easy to deform. The brick pressing device comprises a pressing mechanism, the pressing mechanism comprises an operation frame and a side groove, and a rectangular through groove is formed in the bottom of the inner side of the operation frame; the side grooves are symmetrically formed in the two sides of the operation frame. After a green brick in the base plate is pressed, the mold is lifted, then the movable mechanism is taken out of the mold, and in the process that the green brick is taken out of the mold, the side plate can protect the green brick, so that the green brick is prevented from being collided, the flatness of the green brick is guaranteed to the maximum extent before firing and curing, and the brick is prevented from being damaged.

The invention discloses an automatic detection device for testing lamp beads of an LED lamp strip, and belongs to the technical field of LED lamp strip testing. The device mainly comprises a workbench, one side of the top surface of the workbench is provided with a discharging device used for installing a lamp strip reel, the other side of the top surface of the workbench is provided with a receiving device used for rolling the lamp strip reel, and a lamp bead detection bin used for detecting an LED lamp strip is fixedly installed on the top surface of the workbench and located between the discharging device and the receiving device. The interior of the lamp bead detection bin is divided into a dust removal area and a detection area through a partition plate, the detection area comprises a belt pressing assembly and a detection assembly, and by combining winding and unwinding of an LED lamp belt with lamp bead detection, rapid and continuous detection can be achieved, it is ensured that each lamp bead can emit light reliably and be recognized accurately, and the detection efficiency is improved. The strip pressing assembly and the conductive terminals effectively maintain the flatness of the LED lamp strip and ensure accurate contact of power supply contacts, so that the damage risk of lamp beads is reduced, the production efficiency is improved, the product quality is ensured, and errors caused by manual operation are reduced.

The utility model discloses a curtain wall and an installation system thereof, the curtain wall comprises a decoration panel, a heat preservation and insulation layer and a back plate which are bonded in sequence, the decoration panel is a lava plate, the heat preservation and insulation layer is a vacuum insulation plate, and the back plate is a fiber reinforced calcium silicate plate. The installation system further comprises a wall connecting piece, an adjusting piece and an angle piece. According to the curtain wall, the ultra-low heat conductivity coefficient of the vacuum heat insulation plate is utilized, and the vacuum heat insulation plate, the decoration panel and the back plate are compounded into a whole novel heat preservation and decoration integrated plate; the thickness of the vacuum insulated panel is only 1 / 5 of that of rock wool, the thickness of the curtain wall heat preservation structure is reduced, and the use area of a building is increased; in the construction process of installing a curtain wall, due to the fact that steel bars exist in a wall body, deviation possibly exists between the positions of anchor bolt holes and the paying-off position, vertical adjustment is conducted through the wall connecting piece and the wall connecting strip holes; and when the flatness of the wall body does not meet the requirement, adjustment in the horizontal direction and the left-right direction is conducted through the adjusting pieces and the corner pieces, and the installation flatness of the curtain wall is guaranteed.

The invention provides a display backboard stamping process optimization method and system, and relates to the technical field of process optimization. According to the method, multi-area differential mesh division is carried out on a plate finite element model, fine meshes are adopted for a high-strain small-curvature area and a high-strain area, rough meshes are adopted for a trimming allowance area, and medium meshes are adopted for other areas. The deformation behavior of the key area is accurately captured, and the reliability of simulation prediction is remarkably improved under the same computing resource. And then, reverse compensation iterative correction and rapid convergence are performed on the initial molded surface based on a springback prediction result to obtain an optimized molded surface model, and source control is directly performed for springback errors, so that the number of times and period of mold testing which traditionally depends on experience are greatly reduced. According to the method, through linkage of simulation and real-time sensing data, dynamic optimization and closed-loop control of the process window are achieved, and the forming quality and production stability of the display backboard are effectively improved.

The invention relates to the technical field of circuit board preparation, and particularly discloses a single-sided copper-embedded double-sided circuit board with an asymmetric structure and a preparation method thereof, and the method comprises the steps: carrying out the single-sided etching of a double-sided copper-coated core board to form a structure with one surface coated with copper and one surface coated with a rough base material, and precisely processing a copper-embedded region through a routing technology, good clearance fit between the copper block and the FR4 gong vacancy is ensured, so that the phenomenon of glue overflow is avoided, and the flatness of the surface is ensured. Meanwhile, the PI film is introduced in the lamination treatment and the prepreg is reasonably utilized, so that the binding force between the copper block and the core plate is enhanced, the surface copper foil is prevented from being polluted by resin, and the high-quality yield is ensured. In addition, the quality problem that the thin copper foil is wrinkled during conventional pressing is effectively prevented by using the copper core plate.