2410 results about "Metal strips" patented technology

The invention provides a rapid welding storage battery busbar structure and a manufacturing process, and relates to the field of lead-acid storage batteries, the rapid welding storage battery busbar structure comprises a plate group, a non-lead metal strip, a non-lead metal positive terminal and a non-lead metal negative terminal, the non-lead metal strip and the non-lead metal positive terminal are made of metal or alloy with the conductivity higher than that of lead, and the non-lead metal strip is electrified to be rapidly heated and is welded with the cluster group tab and the non-lead metal positive and negative terminals at the same time, and after being firmly welded, the non-lead metal strip is cut to form a busbar and is sealed by glue. According to the lead-acid storage battery, metal with the conductivity higher than that of lead is adopted to replace lead and lead-based alloy to serve as the busbar of the lead-acid storage battery, the gravimetric specific energy of the lead-acid storage battery is improved, the material cost of the lead-acid storage battery is reduced, the mode of welding by heating the metal strip is adopted to replace the technology of manufacturing the busbar through hot melting of lead, the production efficiency is improved, and the energy consumption is reduced; meanwhile, clean production is achieved, and lead pollution in the traditional production process is avoided.

The invention discloses a high-speed multi-photon detection system and method. The system comprises a detector and a signal processing circuit, wherein the detector is composed of a window plated with a photoelectric cathode, a micro-channel plate stack and an anode; a plurality of incident photons are converted into a plurality of photoelectrons by the photoelectric cathode, and the photoelectrons are converted into electron cloud by the micro-channel plate stack; the incident electron cloud is divided into multiple paths by three layers of staggered metal strip electrodes of the anode, and charge collection is carried out to obtain charge short pulses of each layer of electrode; the signal processing circuit converts the charge short pulses transmitted by the three layers of electrodes into digital pulse signals, obtains the centroid coordinates of the electron cloud from the digital pulse signals as the abscissa value, the ordinate value and the verification value of the incident photon position, combines the abscissa value, the ordinate value and the verification value based on the screening condition to obtain the target two-dimensional coordinates, and finally obtains the target two-dimensional coordinates. And transmitting to a terminal for imaging display. According to the invention, a plurality of synchronous photons can be detected, the overall counting rate of the detector is greatly improved, and the detection efficiency is improved.

The invention relates to a miniaturized millimeter wave filtering magnetoelectric dipole antenna with high out-of-band rejection, and relates to the technical field of communication antennae, and the miniaturized millimeter wave filtering magnetoelectric dipole antenna with the high out-of-band rejection effect comprises a strip line feed structure which is used for generating a lower stop band radiation zero point; the n-shaped feed structure is used for feeding the magnetoelectric dipole; according to the magnetoelectric dipole radiator, a U-shaped groove is etched in a dipole patch, so that the size of the antenna is reduced; the parasitic metal strips are used for enhancing the radiation suppression effect of the upper stop band; the folding split rings are folded to reduce the size of the split rings and enhance the radiation suppression effect of the lower stop band at the same time; the inverted L-shaped short circuit branch is used for enhancing the radiation suppression effect of the upper stop band, the absolute bandwidth of the antenna is 21.1 GHz to 31.0 GHz, the relative bandwidth is 37.0%, the lowest gain is 5.0 dBi, the highest gain can reach 7.8 dBi, the suppression level from the in-band highest gain to the radiation zero point of the upper stop band is larger than 40 dBi, and the suppression level from the in-band highest gain to the radiation zero point of the lower stop band is larger than 50.0 dBi.

To surely prevent short circuit accompanied by contact of a metal bar with a metal structure in its periphery.SOLUTION: An on-vehicle bus bar 1 has a metal bar 10, a fireproof tape and an insulator layer 30. The one or two or more fireproof tapes are overlapped and wound around the metal bar 10, at least the one fireproof tape is longitudinally attached thereto and wound therearound, and the metal bar 10 and the fireproof tape are coated with the insulator layer 30.SELECTED DRAWING: Figure 1

The invention discloses a millimeter wave broadband dual circularly polarized antenna and an array. The millimeter wave broadband dual circularly polarized antenna comprises two layers of microwave medium substrates, a bonding medium, a grounding metal plate and a coaxial feed probe. Two E-shaped patch antennas, four small square patches and an L-shaped metal strip are printed on the upper surface of the upper-layer dielectric substrate, gaps are obliquely formed in the centers of the small square patches, the L-shaped metal strip is used for increasing port isolation, and the E-shaped patches excite the four small square patches to achieve the broadband radiation characteristic. And two coaxial feed probes are respectively connected with two output ends with 90-degree phase difference of the 3dB directional coupler on the lower surface of the lower-layer microwave dielectric substrate, sequentially penetrate through the lower-layer microwave dielectric substrate, the bonding medium, the grounding metal plate and the upper-layer microwave dielectric substrate, and are electrically connected with the two E-shaped patch antennas, so that circularly polarized radiation is realized. According to the invention, the circularly polarized antenna with wide beam width, wide impedance bandwidth, wide axial ratio bandwidth and dual polarization characteristics is realized, and the circularly polarized antenna is suitable for potential application requirements of millimeter wave frequency band wireless communication and satellite communication.

The invention aims to disclose a preparation process of a high-wettability aluminum alloy and a high-strength and high-conductivity copper-aluminum composite material, and relates to the technical field of metal composite materials, and the high-wettability aluminum alloy and high-strength and high-conductivity copper-aluminum composite material comprises the following components in percentage by weight: 1.2%-2.1% of Si, 0.5%-1.0% of Fe, 0.03%-0.1% of Cu, 0.05%-0.07% of Mn, 0.05%-0.08% of Mg, 0.05%-0.1% of Zn, 0.05%-0.1% of Zr, 0.02%-0.05% of Ti, 20 ppm to 50 ppm of rare earth, and the balance of aluminum and inevitable impurities. Comprising the following steps that high-wettability aluminum alloy is cast and rolled into a semi-liquid alloy aluminum strip, and the thickness of the semi-liquid alloy aluminum strip ranges from 5 mm to 7 mm; casting and rolling to form a semi-solid copper strip, wherein the thickness of the semi-solid copper strip is 0.8-2mm; and the semi-liquid alloy aluminum strip and the semi-solid copper strip are cast-rolled and compounded into a composite metal strip of 6.0 mm-8. 5mm. The high-wettability aluminum alloy has the beneficial effects that the high-wettability aluminum alloy contains Si, Fe, Cu, Zr, Ti and rare earth, and has the characteristics of high strength, high hardness, high wettability and easiness in rolling; the semi-liquid aluminum alloy strip and the high-strength and high-conductivity semi-solid copper strip are continuously cast and rolled, and the formed composite metal strip has the characteristics of high peel strength, difficulty in layering and high conductivity.

The invention relates to a laser welding method suitable for a manganese-copper diverter, which comprises the following steps of: respectively splicing and tightly attaching two non-ferrous metal strips to two sides of a middle metal strip, and after the to-be-welded surfaces of the non-ferrous metal strips and the middle metal strip are positioned on the same horizontal plane, welding the to-be-welded surfaces of the non-ferrous metal strips and the middle metal strip; a near-infrared laser beam and a blue laser beam which are coaxial form a red-blue composite laser beam, the red-blue composite laser beam is used for conducting laser welding along the splicing gap of the non-ferrous metal strip and the middle metal strip, and during laser welding, the inclination angle between the red-blue composite laser beam and the vertical face of the surface to be welded is larger than or equal to 7 degrees. A light spot formed by the near-infrared laser beam swings in a light spot formed by the blue light laser beam, a welding seam is formed at the splicing position of the non-ferrous metal strip and the middle metal strip and penetrates through the non-ferrous metal strip to form a bonding layer, laser welding can be adopted only, the welding seam quality of laser welding is improved, welding spatter is reduced, and material overheating is avoided; and the consistency of product quality and the high efficiency of production are both considered, the production cost is reduced, and batch production is achieved.

The invention relates to a high-temperature superconducting cable and a manufacturing process thereof, and belongs to the technical field of electric wires and cables.The cable comprises a supporting framework, a buffer layer, a three-phase superconducting composite layer, a shielding layer, a heat insulation layer and a sheath layer which are sequentially arranged from inside to outside; the heat insulation layer comprises at least two layers of corrugated pipes formed by continuous rolling and welding, and the corrugated pipes are of periodic concave-convex structures obtained by conducting continuous rolling and side seam welding on metal strips to form closed pipe bodies and then conducting embossing treatment on the closed pipe bodies. A woven reinforcing layer wrapping the peripheries of the corrugated pipes is further arranged in the heat insulation layer, and the adjacent corrugated pipes are connected through supporting pieces to form a vacuum interlayer. According to the application, the corrugated pipe formed by continuous coiling and welding is combined with the combined structure of the braided reinforcing layer and the supporting piece, so that the continuous production of the large-length high-temperature superconducting cable can be conveniently realized, and the problems of axial stress concentration and seam accumulation defects existing in a heat insulating layer of a traditional prefabricated sleeve pipe can be eliminated; and the air tightness stability of the vacuum interlayer of the large-length high-temperature superconducting cable is ensured.

The invention discloses a compact millimeter wave dual-polarization filtering antenna and array, which comprises 11 layers of structures (a first metal layer to a sixth metal layer, three dielectric layers and two bonding layers) and three types of metalized via holes which are sequentially stacked from top to bottom, the feed through hole penetrates through the first dielectric layer to the third dielectric layer, the short-circuit through hole penetrates through the first dielectric layer to the third dielectric layer, and the shielding hole penetrates through the third dielectric layer. Wherein a cross-shaped radiation patch and a C-shaped parasitic metal strip line are arranged on the first metal layer; an annular driving patch is arranged on the second metal layer; the third metal layer is provided with a feed metal strip line and a parasitic metal strip line. The fourth metal layer is provided with a parasitic open-circuit branch. A first grounding plane is arranged on the fifth metal layer; the sixth metal layer is provided with a second grounding plane and an anti-pad. The working frequency band covers the n258 frequency band and the n257 frequency band of 5G millimeter waves, dual-polarization radiation and effective out-of-band rejection can be achieved, and meanwhile the antenna has the advantages of being compact in structure and light and handy in appearance.

The invention discloses post-processing equipment for a rolled strip, relates to the technical field of strip rolling post-processing, and aims to solve the problems of waved edge warping and overall warping caused by non-uniform residual stress distribution of edge and central areas after a metal strip is rolled in the prior art. Comprising a gradient annealing device and an edge stress grading regulation and control device, the gradient annealing device at least comprises a plurality of heating roller groups; the plurality of heating roller groups are arranged at equal intervals along the moving direction of the strip, each heating roller group comprises two heating rollers, the two heating rollers respectively heat the upper surface and the lower surface of the rolled strip, each heating roller at least comprises a magnetic induction coil, and the coil density of the magnetic induction coil is gradually reduced from the edge part to the middle part; the edge stress grading regulation and control device at least comprises a plurality of edge pressing roller sets arranged in the strip moving direction. The included angle between each edge pressing roller set and the width direction of the strip is gradually reduced in the moving direction of the strip. The method is used for realizing precise regulation and control of the residual stress.

The invention relates to the technical field of metal strip degreasing production line on-line control, and particularly discloses a metal strip degreasing production line on-line control system and method, and the system comprises a degreasing state judgment module, a degreasing information collection module, a degreasing incomplete analysis module, a degreasing excessive analysis module, a database, and a production line degreasing effect feedback module. According to the method, the reason for incomplete degreasing is determined by judging the degreasing state corresponding to the target metal strip, the corresponding control scheme is matched according to the reason for incomplete degreasing, meanwhile, when the degreasing state is excessive degreasing, the PH value corresponding to the degreasing fluid in the degreasing tank in next batch of degreasing is adjusted, and the degreasing efficiency is improved. And finally, whether the degreasing effect corresponding to the target production line has a problem or not is judged, the overall performance of the product is improved, the service life of the product is prolonged, meanwhile, the problem can be accurately positioned, a clear direction is provided for subsequent control measures, and production stability and product quality consistency are improved.

The invention provides a high-entropy nano composite film with self-supporting performance and a preparation method. The preparation method comprises the following steps that a high-power pulse magnetron sputtering method is adopted, metal strips of four elements of Fe, Co, Ni and Cr are spliced together to serve as a sputtering target material, high-purity Ar and a carbon-containing gas source serve as working gas, negative bias voltage is applied to a substrate subjected to surface cleaning treatment, target voltage is applied to the metal splicing target, and high-entropy nano composite film deposition is conducted; and after deposition of the high-entropy nano-composite film is completed, cooling the high-entropy nano-composite film to 80 DEG C or below in a vacuum environment, deflating, opening the cavity and discharging the high-entropy nano-composite film out of the furnace, so that the high-entropy nano-composite film with the self-supporting performance is obtained on the surface of the substrate. The thin film comprises the following components in atomic percent: 5-35 at.% of Fe, 5-35 at.% of Co, 5-35 at.% of Ni, 5-35 at.% of Cr and 10-40 at.% of carbon atoms, and the sum of the atomic percent of the components is 100%. Through component design and process innovation, collaborative optimization of high hardness, high toughness, corrosion resistance and self-supporting performance is achieved.

The utility model provides an automatic distance fixing device for material belts, and belongs to the technical field of coil stock processing equipment. The problems that slit metal material strips are tightly arranged, if the tightly arranged material strips are directly wound, the edges of every two adjacent metal material strips are overlapped, and winding fails are solved. The device comprises a mounting seat, a distance wheel rotationally arranged on the mounting seat, and a plurality of separation sheets sleeved on the distance wheel, the plurality of separation sheets are arranged along the axial direction of the distance wheel at intervals, and a guide clamping groove is enclosed between every two adjacent separation sheets; an adjusting device is further arranged on the mounting base and used for adjusting the distance between the partition pieces so that the width of the guide clamping groove can be matched with the width of the material belt. The utility model has the advantages that: before winding, the material belts are respectively placed in the independent guide clamping grooves to play a role in guiding, so that the material belts can be neater during winding, and the winding uniformity of the material belts is improved.

The utility model discloses a metal belt cooling mechanism which comprises a supporting table, a support is jointly welded to the two sides of the upper end of the supporting table, two cleaning frames are installed on one side wall of the support in an up-down symmetrical mode, a cleaning roller is installed on each cleaning frame, flexible brush strips are installed on the outer sides of the cleaning rollers, and the flexible brush strips are connected with the supporting table. And a motor is mounted on the cleaning frame through a bolt at a position opposite to a rolling shaft of the cleaning roller. The cleaning device has the beneficial effects that on one hand, under the action of the cleaning frame, the cleaning roller, the flexible brush strip and the motor, residues on the surface of a metal belt subjected to hot rolling machining can be effectively cleaned, and the residues are prevented from being firmly adhered after the metal belt is cooled, and on the other hand, under the action of the electric telescopic rod, the air cooler, the air injection cover and the clamping roller, the cleaning effect is good. According to the metal belt cooling device, the metal belt can be clamped and corrected through the clamping rollers while air blowing cooling is conducted, so that deformation of the metal belt after cooling is effectively avoided, and the cooling quality of the metal belt is improved.

The utility model discloses a metal belt material and a honeycomb heating body with the same, and the metal belt material comprises a characteristic belt which is provided with a plurality of wave crest parts and wave trough parts, the wave crest parts and the wave trough parts are alternately arranged, first fire holes are formed between the adjacent wave crest parts, and second fire holes are formed between the adjacent wave trough parts; the partition structure comprises a first partition piece and / or a second partition piece, the first partition piece is arranged at the lower end of each first fire hole, and the first partition piece divides the lower end of each first fire hole into at least two small holes; a second partition piece is arranged at the lower end of each second fire hole and divides the lower end of each second fire hole into at least two small holes. The burner is simple in structure, convenient to manufacture, high in porosity and capable of reducing the tempering probability and improving the heat intensity of the fire holes.

The utility model discloses a ton barrel transfer device with good protection performance, and relates to the technical field of ton barrel transfer devices, the ton barrel transfer device comprises a forklift structure, two protection structures are arranged on the forklift structure, the two protection structures are symmetrically arranged, each protection structure comprises a lifting part, a protection part is arranged on each lifting part, and each protection part comprises a clamping assembly. The forklift structure comprises a mounting plate, two first metal strips are arranged on one side of the mounting plate, a pallet fork is arranged on the mounting plate, the lifting component comprises two fixing plates fixedly connected with the pallet fork, and a threaded rod is rotationally connected between the two fixing plates. According to the utility model, the ton barrel can be clamped and limited, so that the ton barrel is protected, the stability is improved, the danger during use is reduced, and meanwhile, the position of the protection part can be adjusted according to the height of the ton barrel, so that the protection part is positioned in the middle of the ton barrel, and the protection effect is improved.

A full-continuous short-process production method for a metal plate strip comprises the steps of smelting, tundish induction heating, thin strip continuous casting, rolling, 1 # flying shearing, cooling after rolling, acid-free descaling, 2 # flying shearing and strip steel coiling, and a steel coil without oxide scale on the surface is obtained. The metal plate strip comprises the following components in percentage by weight: 0.01-0.06% of C, less than or equal to 0.15% of Si, less than or equal to 0.85% of Mn, less than or equal to 0.02% of P, less than or equal to 0.005% of S and Alslt; 0.001%, less than or equal to 0.0050% of Ca, and the balance Fe and other unavoidable impurities. The method comprises the following steps: carrying out on-line hot rolling on a cast strip cast by double rollers through an on-line six-roller mill, and carrying out an acid-free descaling process to obtain a steel coil without oxide scale on the surface. Products produced through the method are high in ductility, good in forming performance and high in surface quality, and the purpose that cold is replaced by hot in the field of high-end products can be truly achieved.

The invention discloses a broadband low RCS array antenna loaded with FSR. A wave absorbing layer is printed on the upper surface of a first dielectric plate, a wave transparent layer is printed on the upper, middle and lower surfaces of a second dielectric plate, a radiation layer is printed on the upper surface of a third dielectric plate, and a metal bottom plate is printed on the lower surface of the third dielectric plate; the second dielectric plate comprises two layers of dielectric plates which are stacked together; the wave absorbing layer comprises a metal square ring with four branches and lumped resistors loaded on the four sides of the metal square ring, and each branch is a metal rectangular ring which is connected to the vertex of the metal square ring and is provided with a bent metal strip; the wave-transparent layer comprises a pair of metal rings and a perforated metal plate, the pair of metal rings are placed on the upper surface and the lower surface of the second dielectric plate respectively, and the perforated metal plate is placed in the middle of the second dielectric plate; the radiation layer comprises a microstrip antenna array loaded on the upper surface of the third dielectric plate, a feed network of the microstrip antenna array, and a metal bottom plate on the lower surface of the third dielectric plate; and the radiation layer adopts coaxial line feed.

The invention discloses a metal strip surface defect automatic identification and cutting method based on edge detection, and belongs to the field of computer vision, and the method comprises the following steps: (1) setting a parameter list; (2) constructing an edge detection module; (3) constructing a clustering module; (4) constructing a boundary condition judgment module; and (5) constructing a defect grade judgment module. According to the method, the parameter list is set, so that the parameters required to be used in the operation process can be appointed in advance; through the edge detection module, the low-quality image can be enhanced, and defect edge extraction and centroid calculation can be automatically carried out; through a clustering module, the fragmented defects of the same cluster obtained through clustering can be regarded as the same defect; iteratively optimizing the cutting area according to a threshold value set in a parameter list through a boundary condition judgment module; and the defect grade judgment module can judge the defect grade information of the cutting area according to a threshold value set in the parameter list.

The invention discloses composite strip rolling and stamping forming equipment and a composite strip rolling and stamping method, and relates to the technical field of rolling, and the composite strip rolling and stamping forming equipment comprises an unwinding device, a pulse current heating device, a rolling compounding device, a strip buffering device, an annealing straightening device, a stamping forming device and a winding device which are sequentially arranged in the conveying direction of a strip; the unwinding device unwinds the metal belt; the current heating assembly of the pulse current is used for electrifying and heating the metal belt; the rolling composite device is used for rolling the plurality of metal strips into metal composite strips; the strip buffering device is used for buffering and conveying; the annealing and straightening device is used for annealing and straightening; the punch forming device is used for punching and trimming; and the winding device is used for winding. According to the invention, each metal strip can be respectively and accurately electrified and heated to a high temperature through the current heating assembly, so that the electroplasticity of the strip is improved, the interface bonding strength of the copper steel metal strip is improved, the phenomena of edge rebound, wrinkling and the like of a stamped product are effectively improved through the electroplasticity, and the product quality is improved.

The invention discloses a low-profile and high-integration broadband dual-circularly-polarized transceiving common-aperture phased-array antenna, which adopts a multi-layer PCB (Printed Circuit Board) laminated structure, comprises a radiation patch layer, a quasi-rectangular patch layer, a metal reflection ground layer and a feed layer from top to bottom, and is combined with a metalized blind hole and a buried hole to form a complete coupling path. A U-shaped groove, a U-shaped metal strip and a C-shaped groove are integrated on a metal reflection ground, and a staggered groove is loaded on a quasi-rectangular patch, so that a K / Ka dual-band separated dual-coupled feed structure is realized, and dual circularly polarized radiation is obtained under the same aperture. The antenna is further provided with outer ring and inner ring plated-through hole arrays, the outer ring plated-through hole arrays are used for constructing an isolation area to improve the isolation degree between wavebands, and the inner ring plated-through hole arrays introduce a horizontal electric field component to improve the circular polarization purity and expand the axial ratio bandwidth. Wide impedance bandwidth and wide axial ratio bandwidth are realized in the K wave band and the Ka wave band, the isolation degree is high, the profile is low, the structure is compact, and the broadband phased array antenna is suitable for broadband phased array systems such as satellite communication terminals and mobile platforms.

The invention provides a double-sided patterning method for a hemispherical resonance plate electrode and a plate electrode, and the method comprises the steps: clamping the side surface of an electrode body by adopting an annular clamp with grids, placing the electrode body in a film plating machine, and plating metal films on the front and back surfaces of the electrode body, meanwhile, the side face of the electrode body is plated with a grid metal strip film by adjusting the magnetron sputtering angle and the grid-shaped clamp; the metal films on the front and back surfaces of the electrode body are communicated through the grid metal strip films on the side surfaces; spraying glue on the surface of the coated electrode; the electrode is placed on a suction cup of a photoetching machine, the T-shaped mark on the suction cup is aligned with the grid metal strip on the side face of the electrode, and first alignment is completed; pushing the suction cup into the photoetching machine, and aligning the T-shaped mark on the mask with the T-shaped mark on the suction cup to complete secondary alignment; and developing and corroding to finish the double-sided patterning for the hemispherical resonance plate electrode. According to the technical scheme, an original porous electrode scheme needing a pin cap lead can be simplified.

The utility model discloses a metal belt material and a honeycomb heating body thereof, the metal belt material comprises: a characteristic belt, which is provided with a plurality of wave crest parts and wave trough parts arranged alternately, fire holes are formed between adjacent wave crest parts, and fire holes are formed between adjacent wave trough parts; the lower end of the characteristic belt is connected with the vertically-arranged separation belt, the separation belt transversely penetrates through each wave crest part, each wave trough part and each fire hole, and the lower end of each fire hole is divided into at least two small holes by the separation belt. The metal belt material is simple in structure, high in porosity and capable of reducing the tempering probability and improving the heat intensity of area fire holes.

The utility model discloses non-ferrous metal strip detection equipment which comprises a guide roller and a strip driven by an external winding drum to move on the guide roller, the upper side and the lower side of the strip are respectively provided with a group of mounting plates and a fixed frame, the mounting plates are provided with at least two groups of fixed cameras, the two groups of fixed cameras are arranged in a staggered manner, and the fixed cameras are arranged on the guide roller. An illuminating lamp is mounted on the fixed camera; a plurality of sliding grooves are evenly formed in the fixing frame, sliding seats are arranged in the sliding grooves in a sliding mode, and tracking cameras are arranged on the sliding seats. According to the utility model, the industrial camera is adopted for visual inspection, so that the machine row speed during belt material transportation can be improved, the working efficiency is further improved, the defect detection rate and the detection result accuracy are also improved through multiple times of detection confirmation, the difference degree between the detection result and the defect actually existing on the surface of the whole roll of belt material is greatly reduced, and the product quality is improved. And the overall quality of products is improved.

A cable connector comprises a base portion, a plurality of first conductive terminals and a first cable module. The base platform part is provided with a first surface, a first protruding strip extending and protruding out of the first surface in the first direction and a first positioning block further extending and protruding out of the first protruding strip in the first direction. And the first positioning block is provided with a first positioning surface. The first cable module comprises a first metal strip and a plurality of first cables, and the first metal strip is provided with a first abutting surface. The first cable module is installed on the base table part, the first metal strip is supported on the first surface of the base table part, and the first abutting face of the first metal strip abuts against the first positioning face of the first positioning block in the second direction so that the first cable module can be limited in the second direction.

The utility model provides an automatic bending device for a material belt, and belongs to the technical field of roll material processing equipment. The problem that the process of bending the head of the metal strip needs to be manually completed by workers is solved. The clamping mechanism, the pressing mechanism and the feeding mechanism are arranged on the machine frame, the clamping mechanism is used for clamping a material belt, the pressing mechanism is used for bending the material belt, the feeding mechanism is used for conveying the material belt, the clamping mechanism comprises an upper clamping block and a lower clamping block, and a material passing gap is formed between the upper clamping block and the lower clamping block. The feeding mechanism feeds a material belt into the material passing gap and forwards extends out of the material passing gap; the pressing and leaning mechanism comprises a pressing block and a driving mechanism for driving the pressing block to move, and the pressing block presses the material belt to enable the material belt to be bent so that the head of the material belt can be bent to form a hook. The bending device has the advantages that the material belt is clamped through the clamping mechanism, then the pressing block is moved to push the head of the material belt to be bent, the automation degree is high, the working efficiency is greatly improved, and time and labor are saved.

The invention discloses a filter and electronic equipment. The filter comprises a substrate and a quasi-surface plasmon polariton (SSPP) array. The SSPP array comprises m SSPP units, and the m SSPP units are the same in size. Each SSPP unit in the m SSPP units comprises a first metal strip and a second metal strip which are symmetrically arranged and do not make contact with each other, the first metal strip is located on the upper surface of the substrate, and the second metal strip is located on the lower surface of the substrate. The first metal strip comprises a rectangular structure and an anchor-shaped structure, one end of the rectangular structure is coupled with the edge of the substrate, the other end of the rectangular structure is coupled with the anchor-shaped structure, the width of the anchor-shaped structure is larger than that of the rectangular structure, and the size of the first metal strip is related to tuning parameters of the filter. Therefore, the tuning parameter of the filter can be determined by directly adjusting the size of the first metal strip, and the design flexibility of the filter is improved.

The utility model discloses a metal coil stock precise laser cutting machine which comprises a coil stock discharging frame and a machine frame, a workbench is arranged on the machine frame, and a servo feeding device, a material clamping device, a material pulling device, a needle plate assembly and a laser cutting device are installed on the workbench. The roll material placing frame is used for placing and supplying a rolled metal material strip; the servo feeding device is used for conveying a material belt to the material clamping device and the material pulling device; the material pulling device is used for clamping the end of a material strip and pulling the metal material strip from one side of the needle plate assembly to the other side of the needle plate assembly. The material clamping device is used for clamping the material strip after the material pulling device pulls materials in place. The needle plate assembly comprises a needle plate lifting device and a needle plate, and the needle plate lifting device is used for driving the needle plate to lift; the laser cutting device is used for laser cutting of the material belt on the needle plate assembly. According to the utility model, the material belt can be flatly unfolded on the needle plate assembly, the needle plate is prevented from interfering with the conveying and pulling of the material belt, the material belt is high in positioning stability and flatness, and the high precision of laser cutting is ensured.

A reversible rolling production system for cold rough rolling of non-ferrous metal strips is characterized in that an on-line air cooling device is added in an original cold rough rolling production line of the non-ferrous metal strips, tail gas discharged by a full-oil recovery system is used for air cooling of the rolled strips, the temperature of rolled strip coils is reduced, and the problem that reversible rolling is not uniform due to thermal superposition of rolling of front and back passes is solved. The problem that the temperature after rolling reaches the non-ferrous metal phase transition temperature or is higher than the recrystallization temperature occurs, and reversible rolling of cold rough rolling of all non-ferrous metal strips is achieved; according to the system, auxiliary transportation equipment and operation which need to be matched with an original non-ferrous metal strip cold rough rolling production line are omitted, rolled strip coils do not need to be temporarily stored and cooled, the rolling production period is shortened, the occupied area of production is reduced, and the system has the advantages of being high in production efficiency and low in equipment investment; in addition, the tail gas discharged by the full oil recovery system is used for carrying out air cooling on the rolled strip, so that the environmental pollution caused by the tail gas discharged by the full oil recovery system to the atmosphere is also reduced.

The invention discloses a transmitting and absorbing integrated three-dimensional frequency selection wave absorber based on an SSPP structure, and belongs to the technical field of microwaves. The invention aims to solve the problems that an existing wave-transmitting and wave-absorbing integrated frequency selection structure cannot meet the characteristics of good permeability and wide wave-absorbing band at the same time, a large number of lumped resistors need to be installed on a wave-absorbing layer to increase the wave-absorbing band width, and the manufacturing difficulty and the total cost are increased. The transmission and absorption integrated three-dimensional frequency selection wave absorber is formed by periodically arranging wave absorber units; the wave absorber unit is composed of an FSS structure unit and a three-dimensional wave absorbing structure unit. The FSS structure unit sequentially comprises a first substrate and a metal pattern layer from bottom to top; the three-dimensional wave-absorbing structure unit is vertically arranged on the upper surface of the FSS structure unit; the three-dimensional wave-absorbing structure unit is formed by two second substrates which are arranged in a crossed manner along two diagonals of the FSS structure unit, and metal strip-shaped groups are symmetrically arranged on the surfaces of the two sides of the second substrates. The invention is used for the transmitting and absorbing integrated three-dimensional frequency selection wave absorber based on the SSPP structure.