54results about How to "Guaranteed thickness uniformity" patented technology

The utility model discloses a coffee bean grinding structure, a grinding machine and a coffee machine. The coffee bean grinding structure comprises a shell, a grinding cavity is formed in the shell, a vertical driving shaft is arranged in the grinding cavity, and a driving device is arranged outside the grinding cavity and is in driving connection with the driving shaft. The bottom of the grinding cavity is provided with a discharge hole, and a powder sweeper and a tool bit which are in direct or indirect driving connection with the driving shaft; the metal grinding head assembly comprises the tool bit, a grinding disc arranged around the periphery of the tool bit and a positioning sleeve arranged around the periphery of the grinding disc, and a conductive terminal is arranged on the positioning sleeve; a shell forming the grinding cavity is made of plastic, and the positioning sleeve and the inner wall of the grinding cavity are installed, fixed and sealed through interference fit; the grinding disc adjusting assembly is made of plastic; the overall cost is reduced by arranging the positioning sleeve, meanwhile, the high precision of ground powder is guaranteed, and the effect of preventing static powder sticking and powder flying can be achieved.

The utility model discloses a segmented iron core rotating, collecting, shaping and pressing riveting system based on visual identification, which comprises a segmented iron core conveying belt, a segmented iron core identification rotating device, a segmented iron core stacking and shaping press and an integral iron core conveying belt which are sequentially arranged according to a segmented iron core rotating, collecting, shaping and pressing riveting process, the segmented iron core transferring manipulator is used for transferring the segmented iron cores among the segmented iron core conveying belt, the segmented iron core identifying and rotating device and the segmented iron core stacking and shaping press; the segmented iron core identification rotating device comprises a support, a rotating workbench which is rotatably arranged on the support and is driven by a servo motor, a visual identification camera which is arranged above the rotating workbench, and an angle encoder which is arranged between the rotating workbench and the support. And the visual identification camera, the servo motor and the angle encoder are respectively connected with the control system. On the basis of ensuring the thickness uniformity of the whole iron core, the working efficiency of an iron core production line is improved.

The invention relates to the technical field of upper cover tape processing, and discloses a uniform gluing device for heat-seal upper cover tape processing, which comprises a base, an unwinding roller is mounted on one side of the top of the base through a frame body, a plurality of support frames are fixedly connected to one side, close to the support frames, of the top of the base, and a cleaning mechanism is arranged at the end parts of the plurality of support frames. A limiting frame is fixedly connected to the side, close to the supporting frame, of the top of the base, a gluing mechanism is arranged outside the limiting frame, a slicking mechanism is arranged on the side, close to the gluing mechanism, of the bottom of the limiting frame, and an edge scraping mechanism is arranged on the side, close to the slicking mechanism, of the bottom of the limiting frame. And a glue collecting mechanism is arranged on the inner side of the limiting frame. The scraping plate and the connecting rod are fixed, and the torsion spring provides elastic pressure, so that the scraping plate can flexibly adapt to different glue thicknesses and scrape redundant glue, and the thickness uniformity of a gluing layer of the upper cover belt is guaranteed.

The winding film winding device comprises a base, one side of the base is connected with a gear shaft through a driving shaft at the output end of a servo motor, the upper portion of the gear shaft is meshed with a driven wheel, a hollow shaft is installed on the inner side of the driven wheel, the outer side of the hollow shaft is connected with a winding roller, and the winding roller is connected with a winding roller. A support, a first supporting plate and a second supporting plate are installed on the upper portion of the base, a limiting plate is connected to one side of the support, a fourth telescopic sleeve rod is installed on one side of the upper portion of the support, a fourth spring is arranged on the inner side of the fourth telescopic sleeve rod, and a fifth telescopic sleeve rod is connected to the end of the fourth telescopic sleeve rod. Through the detection mechanism and the adjusting mechanism, the problems of wrinkles and unevenness in the film winding process are effectively solved, the flatness of the film is remarkably improved, the product quality and appearance are improved, the production efficiency is improved, and the rejection rate is reduced.

The utility model discloses an optical imaging system and a camera module comprising the same. The optical image capturing system includes a lens barrel, and a lens group and a plurality of spacer elements accommodated therein, in which the lens group includes a first lens, a second lens, a third lens, a fourth lens and a fifth lens which are sequentially arranged from an object side to an image side along an optical axis. The plurality of spacer elements includes first, second, third, and fourth spacer elements located on image sides of the first, second, third, and fourth lenses, respectively, and bearing image side portions of the first, second, third, and fourth lenses, respectively. The maximum height L of the lens barrel, the effective focal length f of the optical imaging system, the distance EP23 from the second spacer element to the third spacer element on the optical axis, the maximum thickness CP3 of the third spacer element in the optical axis direction, the center thickness CT2 of the second lens on the optical axis, and the center thickness CT3 of the third lens on the optical axis satisfy the conditional expression 0.50 lt; l / flt; 0.75, 0.60 lt, 0.75, 0.60 lt; (EP2 < 3 + CP3 >) / CT2lt; 2.50 and 2.00 lt, 2.50 and 2.00 lt; (EP2 < 3 + CP3 >) / CT3lt; and 8.50.

The invention belongs to the related technical field of electrospray curved surface packaging, and discloses an array electrospray self-adaptive conformal device and method, and the device comprises a contour scanning module, an industrial personal computer, a nozzle movement module and an array electrospray module. The array electrospray module is arranged on the nozzle movement module, and the nozzle movement module is used for driving the array electrospray module to move up and down; the industrial personal computer is respectively connected to the nozzle movement module and the array electrospray module; the contour scanning module is used for scanning the curved surface shape of the electrospray substrate and transmitting curved surface point cloud data obtained through scanning to the industrial personal computer; the industrial personal computer is used for processing the received curved surface point cloud data and generating a height control signal according to a processing result, and the height control signal is transmitted to the nozzle movement module to dynamically control the nozzle movement module, so that the spraying height of the array electrospray module at each position point of the curved surface corresponds to the curved surface. The method has high universality and adaptability for different curved surfaces.

The invention discloses a manufacturing method of a thick copper circuit board. The manufacturing method comprises the following steps of first-time solder mask printing, second-time solder mask printing, third-time solder mask printing and fourth-time solder mask printing, a 36T-gear point screen printing plate is adopted for first-time screen printing, and the ink viscosity is 50-70 dpa.s; after standing for 1 hour, carrying out primary pre-baking; exposing, developing and post-baking; second-time solder mask printing: pre-processing; a 77T gear point screen printing plate is adopted for second-time screen printing, and the ink viscosity ranges from 110 dpa.s to 120 dpa.s; after standing for 30 minutes, pre-baking for the second time; and exposing and developing. According to the manufacturing method of the thick copper circuit board provided by the invention, parameters such as the screen printing plate and the ink viscosity during screen printing manufacturing are optimized, so that the ink thickness of an isolated line of the circuit board and the ink thickness of a copper surface are uniform, and the problem that the ink in a hole is plugged due to the fact that the ink enters the hole during screen printing can be prevented.

The invention discloses a polypropylene film suitable for a film lamination method and a preparation method of the polypropylene film. The polypropylene film comprises the following components in parts by weight: 85.6-91.85 parts of polypropylene; 4-7 parts of long-chain branched polypropylene; 4-7 parts of a compatibilizer; 0.05 to 0.1 part of a nucleating agent; and 0.1 to 0.3 part of an antioxidant. Firstly, polypropylene is selected, so that the wettability of a melt to carbon fibers is effectively improved, and the filling defect caused by high viscosity of a traditional material is overcome; and secondly, the compatibilizer is introduced to form firm chemical bonding with the fiber surface, so that the interface bonding strength is greatly enhanced. And finally, by combining a precise extrusion and casting process, the prepared polypropylene film is uniform in thickness, excellent in interface performance and suitable for a film lamination method.

The invention relates to a preparation method of a composite substrate and the composite substrate, and the method comprises the steps: providing a wafer bonding structure to be processed, the wafer bonding structure comprises a supporting substrate, a device substrate, and an insulating layer located between the supporting substrate and the device substrate, and the first surface side of the supporting substrate is provided with a cavity structure, the first surface is arranged towards the second surface of the device substrate; the device substrate is thinned to a preset thickness from the third surface of the device substrate, and the preset thickness is smaller than or equal to 10 micrometers; the thinning step comprises the substeps of thinning the device substrate by adopting a mechanical grinding process, wherein the mechanical grinding process comprises the substeps of thinning the device substrate by adopting a coarse grinding process until the thickness is greater than or equal to 120 microns; thinning the device substrate until the thickness is greater than or equal to 60 microns by adopting an accurate grinding process; thinning the device substrate to a third preset thickness by adopting a wet etching process; and reducing the thickness of the device substrate to a preset thickness by adopting a chemical mechanical grinding process. In this way, the device substrate can be thinned to be below 10 microns and is not damaged.

This utility model relates to the field of port engineering construction equipment, and discloses a drainage ditch forming device, including a template system, a support assembly, an expansion joint forming assembly, and a concrete pouring thickness monitoring assembly. The template system consists of parallel inner and outer templates forming a cavity that matches the cross-section of the drainage ditch. Double-sided waterproofing strips are pasted at the template joints to prevent grout leakage. The support assembly secures the templates with tie bolts and steel pipe supports, ensuring stability during concrete pouring. The expansion joint forming assembly consists of a vertically arranged foam rubber sheet within the cavity and positioning components fixed to the inside of the template, used to prefabricate expansion joints during pouring. The thickness monitoring assembly consists of an array of ultrasonic thickness sensors arranged along the height of the inner template to detect the concrete pouring thickness in real time. This device effectively prevents grout leakage, maintains template positioning accuracy, prefabricates expansion joints, and monitors pouring thickness, improving the construction quality and efficiency of drainage ditches.

The invention provides a PUR oil-resistant and wear-resistant material and a preparation method of a swing drag chain line of the PUR oil-resistant and wear-resistant material, and relates to the technical field of drag chain lines. A storage barrel is fixedly arranged at the top of the supporting table, and PUR oil-resistant and wear-resistant particles are stored in the storage barrel; an extruding structure is fixedly arranged at the top of the supporting table, and an extruding assembly is further fixedly arranged at the top of the supporting table; a spray cooling device is fixedly arranged at the top of the supporting table, and two guide assemblies are fixedly arranged at the top of the supporting table; a guide assembly and an extrusion assembly are arranged; the transverse direction and the vertical direction of the cable core can be limited and guided at the same time, and the advancing path of the cable core is guaranteed; therefore, overlarge contact force between the cable core and the inner wall of the extrusion mold can be prevented, the performance integrity of the cable core is ensured, and the problem that overlarge contact force is possibly generated between the cable core and the inner wall of the extrusion mold is solved.

The invention relates to the technical field of motors, and discloses a motor shaft insulation coating processing method, a fixing tool and a spraying device.The motor shaft insulation coating processing method comprises pretreatment and shielding, dynamic spraying, post-treatment and a second base, a spraying cavity is formed in the second base in the circumferential direction, and the spraying cavity can rotate; and the clamping piece is arranged in the spraying cavity, and the clamping piece fixes and rotates the motor shaft along the axis of the motor shaft. The clamping piece is arranged to fix the motor shaft, the axial parallelism of the motor shaft and the second base is improved, when the spraying cavity rotates and ascends and descends and a spraying opening of the spraying gun ascends and descends, the motor shaft can be still relative to the second base, the position precision of the motor shaft and the second base is guaranteed, and then the distance between the motor shaft and the spraying gun is kept stable; therefore, the thickness uniformity of the insulating coating on the surface is ensured, the insulating effect is ensured, a plurality of motor shafts are sequentially sprayed, and the spraying efficiency is improved.

The invention relates to the technical field of electrode wire preparation, and provides a plating electrode wire preparation method based on a special coating and a heat treatment technology. The metal wire base material is pretreated, and impurities and internal stress on the surface of the metal wire base material are removed; preparing a special coating solution, wherein the special coating solution comprises a binder, a functional additive and a solvent; the pretreated metal wire base material is soaked in the special coating solution; the metal wire base material coated with the special coating is dried, and the solvent in the coating is removed; carrying out electroplating treatment on the dried metal wire base material; and carrying out heat treatment on the electroplated metal wire base material. The electrode wire is endowed with high hardness, wear resistance and oxidation resistance through the functional additive in the special coating solution, and in the heat treatment process, the combination between the plating layers and between the coating layers and the metal wire is firmer, meanwhile, the microstructure of the plating layers is improved, and the hardness, wear resistance, corrosion resistance and other properties are improved.

The invention discloses a device and a method for improving transverse uniformity of a copper foil. The device comprises an electrolytic tank, the anode plates are arranged in the electrolytic tank, an electroplating space allowing a coating film to pass through is formed between every two adjacent anode plates, each anode plate is provided with a runner notch allowing electroplating liquid to flow through, the two anode plates form an anode plate set, and the two anode plate sets are symmetrically arranged in the electrolytic tank; the conductive transmission device is used for electrifying the coating film and conveying the coating film in the longitudinal direction; the conveying roller is used for conveying a coating film to pass through the electroplating space, and a flow guide channel allowing electroplating liquid to longitudinally flow along the coating film is formed between the conveying roller and the anode plate set; and the electroplating liquid circulating device comprises a liquid inlet pipe which is transversely arranged in the electrolytic tank, a liquid outlet hole is formed in the liquid inlet pipe, and an opening of the liquid outlet hole faces the flow guide channel, so that the electroplating liquid flows into the electroplating space from the flow guide channel in the longitudinal direction, and the electroplating liquid in the electroplating space flows to the outer side of the electroplating space from the flow channel notch. The method has the effect of improving the transverse uniformity of the copper foil.

The present invention relates to a method and device for detecting the wear resistance of a surface coating. The method: based on different combinations of multiple surface coating process parameters, a substrate material is subjected to surface coating deposition treatment to obtain multiple coating samples; multi-parameter testing and 3D scanning are performed to obtain wear resistance performance data and 3D surface morphology data; digital blanket calculations of different scales and directions are performed on the 3D surface morphology data to obtain a multi-scale wear resistance index; fractal analysis is performed on the wear resistance performance data and the multi-scale wear resistance index to obtain a fractal wear resistance feature set; the fractal wear resistance feature set is input into a double-layer spatiotemporal graph convolutional network model to perform wear resistance detection to obtain a wear resistance evaluation index; particle swarm optimization is performed on multiple groups of surface treatment process parameters according to the wear resistance evaluation index to obtain an optimal coating process parameter combination. The implementation of the present invention improves the efficiency and quality of solving the optimal coating process parameters.

The invention relates to a method and device for manufacturing a printed circuit board with a packaging area, and the method and device can control the ink thickness of a BGA area of a PCB within a first preset range, and control the total thickness parameter of a green oil block and a white oil block of the BGA area within a second preset range. The method can be applied to high-density assembly of devices such as BGA, QFN, CSP, FinePitchIC and the like. According to the invention, the copper thickness difference can be reduced, the thickness uniformity of the solder mask layer and the character layer can be ensured, the product performance failure caused by tin connection short circuit during the surface mounting of the PCB can be effectively avoided, and the yield and the service life of the rear-end application of the PCB can be improved.

The application provides a low-temperature laminated co-extrusion adhesive film and a preparation method and a photovoltaic module, and relates to the technical field of photovoltaic devices.The low-temperature laminated co-extrusion adhesive film comprises a laminated EVA film layer and a TPO film layer, and the EVA film layer and the TPO film layer are fused at the interface part; the content of vinyl acetate in the EVA film layer is 15-40%, and the crosslinking degree of EVA is not less than 65%; the raw material for forming the TPO film layer comprises an ethylene-alpha olefin copolymer; the melt index of the ethylene-alpha olefin copolymer is 0.5-10 g / 10 min, and the melting point is 50-115 DEG C; the light transmittance of the low-temperature laminated co-extrusion adhesive film for light with a wavelength of 380-1100 nm is greater than 88%. The low-temperature laminated co-extrusion adhesive film provided by the application not only can realize low-temperature crosslinking, but also has high bonding performance with a base material and long-term anti-creep performance.

The utility model discloses a kind of multi wafer electroplating tank, including electroplating tank body, wafer clamp, drive assembly, stirring paddle, paddle and anode;Wafer clamp is arranged in the center of electroplating tank body to cause electroplating tank body to be divided into two, multiple electroplating sub-tank are arranged in the electroplating tank body of wafer clamp two sides, each electroplating sub-tank is divided into anode area and overflow area by partition, anode area is close to wafer clamp setting, the output end of drive assembly is connected with two groups of stirring paddles capable of linear motion on electroplating tank body, two groups of stirring paddles are respectively arranged in the two sides of wafer clamp, paddle is equipped on the stirring paddle above each anode area, anode is arranged in each anode area.The utility model has the advantages that the electroplating of single piece to multiple wafer is realized, the output and efficiency of electroplating are improved, cost is reduced, paddle is arranged in each anode area, and the electroplating solution near wafer in each anode area is stirred back and forth to ensure that plating layer thickness uniformity.

The invention discloses a method for preparing a half-bridge strain gauge by using a glass reflow process, and belongs to the technical field of semiconductors. The strain gauge includes an insulating layer, a semiconductor layer, and a metal pad. The semiconductor layer comprises a first resistor and a second resistor which are located between the metal bonding pads, and the insulating layer is formed by a glass reflow process; the process comprises the following steps of: defining a glass reflow shape of a DRIE silicon wafer, filling a DRIE etched part of the silicon wafer through a glass reflow process, and thinning redundant glass to form a glass shape; bonding the doped silicon wafer on the front side, defining the thickness of a front semiconductor layer through front CMP (Chemical Mechanical Polishing), front single-side corrosion and a heavy doping self-stop corrosion process, etching the front thin semiconductor layer into a strain gauge structure through DRIE (Deep Reactive Ion Etching), and removing redundant silicon through back CMP and single-side corrosion process, so as to form a strain gauge structure; the thickness of the strain gauge is controlled through the glass on the back side after single-side corrosion is completed, and the tape-out yield of the strain gauge is improved. Cost is low, high breakdown voltage resistance can be guaranteed, and thickness uniformity of the strain gauge is guaranteed.

The display device manufacturing apparatus includes: a stage on which a display panel is provided; the mask is arranged on the display panel and comprises a frame and a bracket, the frame comprises a second surface opposite to the first surface and facing the working table, and a mask opening penetrating through the first surface and the second surface is defined by the frame; the bracket is arranged in the mask opening, is connected to the frame and comprises a third surface with the same plane as the first surface and a fourth surface opposite to the third surface; and a coating unit that moves in a direction parallel to a first direction in which the bracket extends, the coating unit including: a first roller that contacts the third surface; a second roller in contact with the first surface; and an ejection member that is disposed between the first roller and the second roller in a second direction intersecting the first direction and that ejects the resin toward the mask opening.

The invention discloses an element mounting method suitable for different cavity depths. The method comprises the steps of soldering paste blade coating, silica gel head glue dipping, pattern transfer printing and element mounting. According to the invention, a customized silica gel head transfer printing mode is adopted, and the solder paste is transferred and coated according to a certain pattern, so that the problems of high difficulty, low precision and low efficiency of coating of the solder paste of mixed devices with different cavity depths are solved, and therefore, small-size element mounting is realized, and the requirements of aerospace, military and other application scenes on miniaturization, integration and light weight of the devices are met.

The utility model discloses a lithium strip coating dry method electrolyte membrane production device, which comprises an upper processing mechanism and a lower processing mechanism, the upper processing mechanism comprises an upper unwinding roller, an upper winding roller and an upper roller pair, the upper roller pair is positioned between the upper unwinding roller and the upper winding roller, and the lower processing mechanism comprises a lower unwinding roller and a lower winding roller. The two ends of a lithium strip are wound on the upper unwinding roller and the upper winding roller respectively, and the lithium strip abuts against the bottom of the upper pair of rollers; the lower processing mechanism comprises a lower unwinding roller, a lower winding roller and a lower roller pair, the lower roller pair is located between the lower unwinding roller and the lower winding roller, the two ends of an electrolyte membrane are wound on the lower unwinding roller and the lower winding roller respectively, and the electrolyte membrane abuts against the top of the lower roller pair; a gap adjusting assembly is arranged between the upper roller pair and the lower roller pair, and the upper winding and unwinding roller and the lower winding and unwinding roller can be exchanged for use. The device has the advantage that the surface smoothness and the thickness uniformity of the composite lithium strip are ensured.

The utility model relates to the technical field of paper pulp conveying, in particular to a paper pulp conveying device which comprises a machine frame, a conveying belt arranged on the machine frame, a fixing frame fixedly arranged at the top of the machine frame, a lifting plate arranged on the fixing frame, a group of fixing blocks fixedly arranged on two sides of the lifting plate respectively, and sliding grooves formed in the fixing frame and matched with the fixing blocks. A motor is fixedly arranged at the top of the fixing frame, an output shaft of the motor is fixedly connected with one end of a screw, the other end of the screw is located in the sliding groove and rotationally connected with the fixing frame, a threaded hole matched with the screw is formed in the fixing block, a mounting hole parallel to the conveying belt is formed in the fixing frame, and a pressing roller is rotationally arranged at the mounting hole of the fixing frame. According to the device, a worker drives the screw rod to rotate through the motor on the fixing frame, then the lifting plate drives the pressing roller to ascend and descend synchronously, it is guaranteed that the pressing roller is effectively limited when the distance between the pressing roller and the conveying belt is adjusted, the thickness uniformity of extruded paper pulp is guaranteed, and the application range is widened.

The application relates to a preparation method of high-pre-stretch polyethylene wrapping film with elastic memory, and belongs to the technical field of polymer material processing. The application aims to overcome the problems of the existing wrapping film, such as the decline of mechanical properties, the serious stress relaxation and the easy migration and pollution of liquid tackifier under the conditions of film thinning and high-pre-stretching. The technical scheme of the application is characterized in that a functional asymmetric five-layer co-extrusion structure is adopted, the structure is sequentially arranged from inside to outside as an adhesion layer, a first transition reinforcing layer, a core elastic layer, a second transition reinforcing layer and a smooth peeling layer, the core elastic layer is composed of a molecular network of octene metallocene linear low-density polyethylene and propylene-based polyolefin elastomer, the adhesion layer provides dry physical self-adhesion force by using propylene-based polyolefin elastomer, the surface rheological behavior is adjusted by using fluoropolymer processing aids in each layer, and a stepwise temperature rising extrusion and air knife pinning quenching process is adopted for forming.

The utility model relates to the technical field of graphene film processing, in particular to roll forming equipment for continuous production of a graphene electrothermal film, which comprises a base, and a height adjusting mechanism, a separating mechanism, a lower compression roller and an upper compression roller are arranged above the base; the height adjusting mechanism comprises a first support and a second support, the first support is fixed to the top of the base, movable grooves are formed in the surfaces of the first support and the second support, and height adjusting electric cylinders are fixed to the tops of the first support and the second support; and one end of the height adjusting electric cylinder penetrates into the movable groove and is fixedly provided with a pressure sensor, a T-shaped sliding block is fixed to the bottom of the pressure sensor, the T-shaped sliding block is slidably connected with the surface of the movable groove, and the surface of the T-shaped sliding block on the left side is rotationally connected with a driven upper spline shaft. According to the utility model, the production flexibility and efficiency are obviously improved through height adjustment and rapid separation functions.

The present application relates to the field of micromotor brush materials, and specifically to a high-precision, high-performance brush material for micromotors and a preparation method thereof. The high-precision, high-performance brush material for micromotors is formed by continuous pressing and hot-rolling of a zinc-nickel copper layer and an AgPdCuPtRE alloy layer; the thickness ratio of the zinc-nickel copper layer and the AgPdCuPtRE alloy layer is 1:(0.05-0.3); the AgPdCuPtRE alloy layer is composed of the following components in mass percentage: 0.2-0.5% RE, 20-40% Pd, 20-40% Cu, 0.2-1% Pt, and the balance is Ag. The present application obtains a brush material for micromotors that takes into account both performance and precision by continuous pressing and hot-rolling of a zinc-nickel copper layer and an AgPdCuPtRE alloy layer.

This utility model discloses a feeding device for the production and processing of plastic packaging bags, relating to the technical field of feeding devices. It includes: a belt conveyor for directional material conveying; a hopper installed on top of the belt conveyor, arranged in a C-shape; a material blocking device installed at the opening of the hopper, used to block material according to the discharge rate; and a discharge chute installed at one end of the belt conveyor. This feeding device, by adjusting the position of a sliding material blocking plate, allows the sliding plate to extend relative to a fixed plate, thereby extending the length of the fixed plate downwards, reducing the discharge gap, and thus facilitating the reduction of the discharge rate. This solves the problem of difficulty in adjusting the discharge rate as needed due to the fixed or inconvenient adjustment of traditional material blocking structures, and eliminates the need to stop the machine for adjustment, significantly improving production efficiency.

The invention relates to the technical field of PEM hydrogen production membranes, in particular to a PEM hydrogen production membrane electrode assembly and a preparation method thereof. The method comprises the following steps: 1, cutting a base membrane according to the size of a proton membrane to obtain a cathode gasket and an anode gasket for later use; 2, stacking a cathode gasket, a proton membrane and an anode gasket, and carrying out hot pressing at 100-150 DEG C for 30-120 seconds to obtain a membrane electrode; 3, filling UV glue into the membrane electrode, and curing to form a glue layer; tightly connecting the anode titanium porous transmission layer and the cathode titanium porous transmission layer with the proton membrane on the two sides of the proton membrane respectively to assemble the electrolytic cell; therefore, the PEM hydrogen production membrane electrode assembly is obtained.

This utility model relates to the field of thin film processing technology and discloses a high-matte thin film surface treatment device; it includes a base frame and two sets of support plates, both sets of support plates are fixed to the top of the base frame, and a driving component is provided on the top of the base frame; a moving component is provided on the outside of the driving component, and the moving component includes a moving plate provided on the outside of the driving component. This utility model, by setting the driving component and the moving component, can easily adjust the position of the winding roller, thereby adjusting the tension of the film during drying. Easy tension adjustment ensures that the film is subjected to uniform force during the drying and winding process, avoiding excessive tension leading to film stretching deformation or even breakage, or insufficient tension causing wrinkles, ensuring the surface smoothness and thickness uniformity of the film, thereby improving the quality of the finished film and enhancing the practicality of the device.

The invention belongs to the technical field of integrally-poured stopper anti-erosion layer forming, and discloses a laser deposition device of an integrally-poured stopper anti-erosion layer and a manufacturing method of an integrally-poured stopper with the anti-erosion layer. The laser deposition device for integrally pouring the anti-erosion layer of the stopper rod mainly comprises a pulse laser emitting device I, a pulse laser emitting device II, a laser deposition chamber, a vertical linear module and a stopper rod fixing device, the manufacturing method of the integral pouring stopper rod with the anti-erosion layer comprises the following steps: step 1, processing the steel core; step 2, burdening of a castable; step 3, casting molding of the integral casting stopper rod; 4, manufacturing a laser bombardment target material; 5, laser deposition of an anti-erosion layer of the integrally poured stopper rod; according to the invention, an anti-erosion layer with high compactness is formed on the surface of a casting body of the integral casting stopper rod; the thickness uniformity and integrity of an anti-erosion layer formed on the surface of a casting body of the integral stopper rod are realized; and casting body cracking caused by high-temperature expansion of the steel core of the integral stopper rod is prevented.