19results about How to "Avoid alignment problems" patented technology

The invention relates to the technical field of hydrogen fuel cells, in particular to an air-cooled reactor automatic loading line for hydrogen fuel cell stack production, which comprises a rack, a storage rack, a material moving mechanism and two conveyor belts, the material moving mechanism comprises a support frame, a driving assembly and a pressing assembly, and electrode plates and bipolar plates are alternately conveyed to the material moving mechanism through the two conveyor belts. The electrode plate or the bipolar plate is supported through the sliding rollers at the bottoms of the overturning frames, and then the two overturning frames are synchronously driven to move through the driving assembly, so that the electrode plate or the bipolar plate naturally falls between the two overturning frames. The auxiliary electrode plate or the bipolar plate can stably fall on the storage rack in cooperation with downward pressing of the downward pressing assembly; the process does not need manual intervention, and the accuracy and regularity of stacking are ensured. The automatic stacking reduces the dependence on manual operation, reduces the labor cost, and further reduces the rework cost caused by unqualified materials due to the reduction of the surface damage of the electrode plates and the bipolar plates.

The present invention relates to the field of hydrogen fuel cell technology, and specifically to an automatic stacking line for air-cooled stacks used in the production of hydrogen fuel cell stacks, including a frame, a storage rack, a material transfer mechanism and two conveyor belts, the material transfer mechanism including a support frame, a drive assembly and a pressure assembly, the electrode plates and bipolar plates are alternately transported to the material transfer mechanism by two conveyor belts, the electrode plates or bipolar plates are supported by sliding rollers at the bottom of the flip rack, and then the two flip racks are synchronously driven to move by the drive assembly, so that the electrode plates or bipolar plates fall naturally from between the two flip racks. With the downward pressure of the pressure assembly, the auxiliary electrode plate or bipolar plate can fall stably on the storage rack; the above process does not require manual intervention, ensuring the accuracy and neatness of the stacking. Automated stacking reduces dependence on manual operation and reduces labor costs, and due to the reduction in surface damage to the electrode plates and bipolar plates, the rework costs caused by unqualified materials are further reduced.

The invention discloses a PVG preparation method and device based on a vector light field generated by a spatial light modulator. The device comprises an illumination system, a phase design system and an exposure system. The lighting system is mainly formed by assembling a laser and a beam expander, and the phase design system is composed of two spatial light modulators (SLMs) which are named as a phase design system 1 and a phase design system 2 respectively. Wherein the lighting system and the phase design system 1 are sequenced on a center line, and the phase design system 2 and the exposure imaging system work on a vertical center line. According to the method, the flexibility of manufacturing the holographic waveguide of the polarization body is greatly improved, phase regulation and control are carried out through the programmable electric control element SLM to control the transverse period, and experimental errors caused by manual adjustment of a reflector in a traditional mode are reduced; meanwhile, the method is different from a traditional interference exposure method, and the whole system has high robustness; in addition, compared with a separated interference light path, one beam expander is used, and the problem of light beam consistency in the beam expanding process is avoided.

The present invention discloses a center alignment positioning method and system based on YOLOv8-RBT, the method comprising: obtaining a preprocessed image of a shaft part to be positioned; introducing a deformable convolution module, a bidirectional feature pyramid network structure and a fusion receptive field attention mechanism module to construct an improved YOLOv8-RBT model; performing target detection on the preprocessed image of the shaft part to be positioned based on the improved YOLOv8-RBT model to obtain the center position of the shaft part; coinciding the center position of the shaft part with the center coordinate of a center alignment device, controlling the center alignment device to tighten the shaft part, and obtaining the center alignment positioning result of the shaft part. The embodiment of the present invention can improve the accuracy of the position, size and angle of the shaft part detection and realize the center alignment of the shaft diameter of the shaft part within a preset range. As a center alignment positioning method and system based on YOLOv8-RBT, the present invention can be widely used in the field of workpiece alignment and positioning technology.

The utility model relates to the technical field of laser cutting, in particular to a three-dimensional five-axis laser cutting device convenient for positioning an object to be cut, a Z-axis moving mechanism is arranged on a cross beam of a gantry rack, and a laser cutter is arranged on an output shaft of the Z-axis moving mechanism; a workbench guide rail and a workbench helical rack are arranged on the installation bottom frame, the cutting workbench is arranged on the workbench guide rail in a sliding mode, an output shaft of a workbench speed reducer on the cutting workbench is in transmission connection with a workbench driving gear, and the workbench driving gear is meshed with the workbench helical rack. A plurality of strip-shaped guide holes are formed in the two sides of the upper surface of the cutting workbench, X-axis clamping assemblies are arranged in the strip-shaped guide holes in a sliding mode, and Z-axis clamping assemblies are arranged on the X-axis clamping assemblies. The plate cutting device is convenient to operate, the labor intensity of workers is greatly reduced, meanwhile, the flatness of a to-be-cut plate object is ensured by uniformly pressing, clamping and fixing the periphery of the to-be-cut plate object, and the cutting accuracy is improved.

The application relates to an underwater wireless optical communication assembly which is adapted to an existing connector, and the existing connector comprises a plug and a socket which are front-end matched, the communication assembly comprises a transmitting end and a receiving end, the transmitting end and the receiving end each comprise a cylindrical outer shell body, the outer shell bodies of the transmitting end and the receiving end are fixed on the front end faces of plug flanges and socket flanges respectively, light source transmitting systems and detector receiving systems are fixed in the outer shell bodies, the light source transmitting systems are provided with a plurality of light sources which are annularly distributed around the central axes of the outer shell bodies, the detector receiving systems are provided with detectors which are located on the same circumferences as the light sources, and deep water sealing connectors are further connected to the tail parts of the outer shell bodies, and are used for realizing the interaction of the transmitting end or the receiving end with user end information. The application can be used in cooperation with the existing connector, realizes fast installation and fixing, does not need to be angle-adjusted and aligned, and does not need to additionally open holes on the equipment.

A layered device includes: a substrate, a first conductive layer on and in contact with the substrate, a second patterned conductive layer in contact with the first conductive layer, a third conductive layer, a fourth conductive layer electrically insulated from the first conductive layer, the second patterned conductive layer, and the third conductive layer, and an operationally active layer between the first conductive layer and the fourth conductive layer. The second patterned conductive layer is thicker than the operationally active layer, and a top portion of the second patterned conductive layer extends across the operationally active layer so as to have electrical contact with the third conductive layer.

This invention discloses an all-solid-state white laser, belonging to the field of laser technology. The laser includes a pump source for generating pump light and a composite laser gain medium for receiving the pump light. The composite laser gain medium is composed of several laser crystals with a stepped distribution of pump light absorption coefficients and several nonlinear optical crystals arranged in a cross-bonded configuration. A first laser resonator, a second laser resonator, and a third laser resonator are formed by coating the laser crystals and nonlinear optical crystals respectively, enabling them to generate lasers of different wavelengths in the same direction under the action of focused pump light. The first laser output from the first laser resonator, the second laser output from the second laser resonator, and the third laser output from the third laser resonator are mixed in the same direction to generate white light, which is then output. This invention effectively improves the thermal effect inside the gain medium through relatively independent resonators, which is beneficial for obtaining high-quality, high-power white light output.

This invention discloses a planar gate SiC MOSFET device and its fabrication method. The fabrication method includes: depositing a first silicon oxide layer in a substrate; forming an N+ source region injection window mask through photolithography, development, and etching; covering the surface of the first silicon oxide layer above the P-type region with a first nitride layer; depositing a second silicon oxide layer, a second nitride layer, and a second polysilicon layer; using the second nitride layer as a barrier layer to planarize the second polysilicon layer; and sequentially etching away the second nitride layer, the second silicon oxide layer, the first nitride layer, and the first silicon oxide layer above the P-type region to form a P+ injection window. This application, by changing the process steps, eliminates the need for a P+ mask, enabling self-alignment of N+ and P+ processes. It also avoids mask alignment problems caused by wafer warpage, reduces registration deviation, improves the accuracy of the injection window region, saves costs, and allows for smaller cell sizes and optimized specific on-resistance.

The invention discloses a method for monitoring laser power, and relates to the technical field of additive manufacturing, a system arranged in a cabin is adopted to realize independent monitoring of the laser power, the system comprises a beam splitter 1, a beam splitter 2, a dodging sheet, a diaphragm, a photoelectric detector and a light shield, the light shield rotates and moves up and down through a motor 1 and a motor 2 respectively, and the motor 1 and the motor 2 are connected with the beam splitter. The laser reflected by the galvanometer and focused by the field lens is irradiated on the beam splitter 1, and the beam splitter 1 divides the laser into two paths; according to the invention, the dodging sheet is added in the light path, and the light passing through the dodging sheet is irradiated on the detector after passing through the diaphragm, so that the problem of laser alignment is solved, and the problems that harmful capacitance or resistance is generated due to the fact that the light is irradiated on the edge of the detector and the detector is possibly invalid due to long-time use are solved; a new monitoring mode is provided, the use interval of the tested laser power is wide, and the incident position of incident light is not limited; the invention provides a structure which can prolong the service life of a system while saving cost.

The application relates to the technical field of anti-fake packaging materials, and discloses an anti-fake packaging material, which comprises a printing layer, a substrate layer, an information layer, a protective layer, a reflection layer and a bottom layer which are sequentially stacked, the information layer comprises a first optical structure with a target phase distribution and a second optical structure for generating a preset visual effect. The anti-fake packaging material has strong anti-fake performance, can consider various optical effects and reduces the cost. The application further discloses a wine box.

The utility model discloses a threaded fastener capable of automatically guiding, which comprises a guiding section and a screwing-in section, a guiding section is arranged between the guiding section and the screwing-in section, the guiding section is provided with at least two circles of guiding threads, and the crest surfaces of the guiding threads are arranged in a plane; the device has the advantages that when the bolt obliquely enters the internal threaded hole, the bolt can be automatically guided by means of the structure of the thread, so that the bolt can be smoothly screwed into the internal threaded hole.

This utility model relates to the field of power transmission equipment technology, specifically to a clamp device for spacers and a phase-to-phase spacer assembly. The device includes a clamp body and a pressure cap. One end of the clamp body is used to connect to the spacer; one end of the pressure cap is rotatably mounted on the clamp body, forming two clamping plates. A wire hole for holding the wire is provided between the pressure cap and the clamp body. A locking part is provided at the other end of the pressure cap. The clamp body has a sliding groove, within which a locking pin slides. When the locking pin slides to the end of the groove near the pressure cap, it abuts against the locking part when the pressure cap is closed, thus restricting the pressure cap from rotating open. When the locking pin slides to the other end of the groove, it disengages from the locking part. The clamp body has an elastic element, with its two ends abutting against the locking pin and the clamp body respectively. Applying external force to push the locking pin and compress the elastic element allows the pressure cap to be opened and the power transmission wire inserted. After closing the pressure cap, removing the external force pushes the elastic element to push the locking pin against the locking part, preventing the pressure cap from loosening. This design is convenient to use.

This utility model belongs to the field of welding nut technology and discloses a round welding nut, including a nut body. The lower end face of the nut body is provided with a radially arranged guide groove. One end of the guide groove is connected to the inner wall of the threaded hole, and the other end of the guide groove passes through and extends to the outer wall of the nut body. An annular plate is provided at the edge of the lower end face of the nut body. A positioning boss is provided at the bottom of the annular plate. A reinforcing rib is also provided on the lower end face of the nut body. One end of the reinforcing rib is connected to the outer wall of the nut body, and the other end is connected to the annular plate. An annular protrusion is provided on the top of the nut body. The arc trajectory of the guide groove can reduce the resistance to the flow of welding liquid. With the groove on the annular plate that matches the guide groove, a through drainage channel is formed to ensure that excess welding liquid is discharged from the outside of the nut, avoiding the formation of welding slag after the welding liquid enters the threaded hole and cools. This eliminates the need for subsequent manual thread cleaning and improves assembly efficiency.

The utility model relates to the field of molten salt pumps, and discloses a high-temperature molten salt pump which comprises a connecting plate, a plurality of fixing columns are fixedly connected to the top of the connecting plate, a fixing groove is formed in the outer wall of each fixing column, a supporting plate is connected to the top of the connecting plate in a sliding mode, and a plurality of connecting grooves are formed in the bottom of the supporting plate. A plurality of fixing assemblies are arranged in the supporting plate, a driving machine is fixedly connected to the top of the supporting plate, a liquid inlet and outlet assembly is arranged on the outer wall of the driving machine, an impeller box is fixedly connected to the bottom of the driving machine, a liquid inlet pipe is fixedly connected to the bottom of the impeller box, and a liquid outlet pipe is fixedly connected to the outer wall of the impeller box. According to the high-temperature molten salt pump, an operator aligns the connecting groove with the fixing column and puts down the connecting groove and the fixing column, so that the soft rubber ring pops up, the effect that equipment can be easily aligned with a device needing to be used and then connected is achieved, the problem that the equipment can be aligned with the device only through complex operation is avoided, and therefore the high efficiency of the high-temperature molten salt pump is improved.

The present application relates to a kind of reconfigurable photonic reservoir system based on single micro-ring resonator, belong to photonic computing and integrated optics field.For the problems of traditional reservoir node quantity is limited, delay feedback system performance and processing time are mutually restricted, the system is proposed by n signal transmission waveguide, n waveguide coupling region and a ring resonant cavity.The n≥1;Signal transmission waveguide input and output optical signal;Waveguide coupling region couples specific wavelength light to resonant cavity, and changes optical power;Ring resonant cavity transmits optical signal to different coupling region.By detecting the different wavelength optical power of each output port generates virtual node, combined with wavelength division multiplexing to realize reservoir computing.The structure breaks through the inherent contradiction between performance and time, significantly improves the integration potential and system flexibility, only needs single micro-ring to complete high-precision time series prediction and speech classification task, provides efficient solution for optical neural network chip.

The invention discloses a sawtooth meshing type full-dry-type connection RC beam column joint and a connection method thereof, and belongs to the technical field of building structures.The sawtooth meshing type full-dry-type connection RC beam column joint comprises a prefabricated column, a prefabricated beam and a steel sleeve, one-way sawteeth are arranged on the inner side of a steel plate of the steel sleeve, a column end steel plate with reverse sawteeth is pre-embedded in the column end of the prefabricated column, and the column end steel plate with the reverse sawteeth is arranged on the outer side of the prefabricated beam. The prefabricated column and the steel sleeve are in dry type connection through the sawteeth which are meshed with each other. The outer side of the steel sleeve is provided with an extended connected piece, and the connected piece is connected with the connecting piece on the beam, so that the connection between the beam and the steel sleeve is realized, and the connection between the beam and the column is further realized. A bracket is arranged on the lower edge of the prefabricated column head and used for supporting the beam end of the prefabricated beam. And a horizontal perforated diaphragm plate is arranged in the steel sleeve and is used for mutual embedding of shear keys between the upper-layer prefabricated column and the lower-layer prefabricated column. When the sawtooth occlusion type dry connection RC beam column joint is installed, assembly and connection can be carried out only through occlusion of the corresponding sawteeth, connection of single steel bars is not needed, secondary pouring operation is not needed, the on-site wet construction amount can be greatly reduced, the installation process is faster, the steel bars do not stretch out of the ends of the prefabricated columns and the prefabricated beams, and the construction cost is reduced. And the factory prefabrication process is simpler.

The utility model discloses an electric connector alignment device which comprises a packaging device body and an alignment device, and the packaging device body comprises an operation table; the alignment device comprises a right-angle rotating arm, the right-angle rotating arm is rotatably installed on the operation table, the right-angle rotating arm rotates in a reciprocating mode in a right-angle mode, a mounting plate is fixedly connected to the bottom of one end of the right-angle rotating arm, and a telescopic device is installed at the bottom of the mounting plate. The lower end of the telescopic device is fixedly connected with a negative pressure chamber shell. According to the utility model, the right-angle rotating wall drives the negative pressure chamber shell to rotate back and forth in a right-angle manner, so that the suction nozzle drives the electric connector detected to be qualified in the detection area to be conveyed to the packaging area through right-angle rotation, the position of the electric connector conveyed to the packaging area every time is fixed, alignment of the packaging device to the electric connector before packaging is avoided, and the packaging efficiency is improved. And therefore, the packaging efficiency of the electric connector is greatly improved.

The invention discloses a multimode data fusion and dynamic visual target adjustment eye movement detection system and method, and belongs to the technical field of vestibular testing. The method comprises the following steps: collecting multi-modal head sensing data of a user, wherein the multi-modal head sensing data comprises data from at least two types of sensors; inputting the multi-modal head sensing data into an artificial intelligence model for fusion processing, and obtaining head posture data of the user based on a processing result; dynamically updating the position of a visual target on the display equipment according to the head posture data, so that the position of the visual target is synchronously adjusted along with the head movement; synchronously acquiring eye image data of the user; on the basis of the eye image data, iris features are recognized, and an eyeball torsion angle is calculated; and obtaining a detection result for evaluating the vestibular function based on the head posture data and the eyeball torsion angle. According to the invention, full-link anti-interference from physical intervention to algorithm compensation is realized, and the accuracy, stability and repeatability of eye movement parameter measurement in a complex clinical environment are remarkably improved.