40results about How to "Accurate spacing control" patented technology

The invention relates to a designing method for LED wafer tri-laser-beam scribing equipment, in which the output end of a laser is provided with a light gate, the output end of the light gate is connected with a beam expander, a first total reflecting mirror is arranged at the output end of the beam expander, the output end of the first total reflecting mirror is linked with a laser beam splittingsystem used for splitting a single-beam laser source into tri-laser-beams, the output end of the laser beam splitting system is provided with a second total reflecting mirror which is linked with a focusing mirror, and the focusing mirror in right face of a processing platform; laser light coming out of the laser is emitted to the beam expander via the light gate, the laser light passing throughthe beam expander is emitted to the first total reflecting mirror, the laser light passing through the first total reflecting mirror is emitted to the laser beam splitting system, the laser beam splitting system outputs triple laser beams with equivalent dimension and energy, the triple laser beams are emitted to the second total reflecting mirror, are emitted to the focusing mirror after the angle is intersected by the second total reflecting mirror, and are parallel focused on the processing platform after permeating through the focusing mirror. The equipment realizes parallel scribing on the LED wafer tri-laser-beam and can be widely used for cutting LED wafers.

A rolled steel cool-deforming test machine, comprising a case, a hydraulic pressure system which is composed of a hydraulic pressure cylinder, an oil pump, an oil tank, a handle reversing valve. A work table is set at top of the case. A supporting plate is set on rear end of the work table. A regulating bracket is set on front end. The hydraulic pressure cylinder is embedded in middle of the supporting plate. A mandril is connected to a piston rod of the hydraulic pressure cylinder. A punch is connected to front end of the mandril. The regulating bracket is composed of a left plate, a right plate, a front plate, a rear plate, a front bottom plate and a rear bottom plate. A right sliding block and a left sliding block are set between the left and right plates. The left and right sliding blocks are spiro-connected to an upper right chain wheel and a lower right chain wheel via a screw. A right vertical column is connected to front end of the left sliding block; a right vertical column is connected to front end of the right sliding block; ends of the upper and lower screw rods extend from the right plate, connected to the upper right chain wheel and lower right chain wheel. A handle wheel is set outside of the right plate, connected to the driving chain wheel which is connected to the upper right and lower right chain wheels via chains. The product is convenient to operate, save and reliable with high test precision, which is applied to bending test detection of various rolled steels.

The invention provides a flexible packing former for a concrete face rockfill dam face. The flexible packing former is characterized by comprising a machine body, wherein the machine body comprises forming belts for clamping and pressing flexible packing, fixing parts for fixing the two ends of each forming belt and connecting parts for connecting the fixing parts; slot surfaces for clamping and pressing the flexible packing are formed in the forming belts; the slot surfaces are matched with the outer profile of the cross section of the flexible packing to be embedded and filled or matched with the decomposed cross section of the flexible packing to be embedded and filled in shape; the number of the forming belts is no less than 2; the forming belts are made from materials which are easy to deform and good in tensile strength; such materials which are easy to deform and good in tensile strength are nonmetal materials, such as rubber, leather, plastic and the like, or metal materials, such as copper, aluminum, iron and the like; the connecting parts can be used for adjusting the spacing among the fixing parts; and the fixing parts are provided with fixtures capable of clamping the forming belts. According to the flexible packing former, the problems of low efficiency and low quality in embedding and filling joint materials in jointing and caulking construction of the concrete face rockfill dam face can be effectively solved.

The invention discloses a convenient-to-position metal stamping part for a bridge and a positioning and mounting method. The convenient-to-position metal stamping part comprises a bridge concrete base, a fixed base, a connecting seat and supporting columns, the bridge concrete base is connected with the fixed base, the fixed base is connected with the connecting seat, and the connecting seat is connected with adjusting box seats at the bottoms of the supporting columns; a screw rod is rotatably connected between the two side walls of each adjusting box seat, adapter clamping rings are arrangedat the two ends of each screw rod and clamped on the outer wall of the corresponding adjusting box seat, the screw rods are in threaded connection with the middle of the connecting seat, a hexagonalwrench head is arranged at one end of each screw rod, and a guardrail is arranged between every two adjacent supporting columns; and a first magnetic sensor and a second magnetic sensor which are usedfor positioning the distance between every two adjacent adjusting box seats are correspondingly attracted to the hexagonal wrench heads of the two adjacent adjusting box seats in a magnetic manner. When a cross beam protective guard is installed, the distance between the two supporting columns can be finely adjusted, and mounting and positioning of the cross beam protective guard are facilitated.

The invention relates to a separated type imaging device that comprises a sensitive group, a toner cartridge and at least one torsion spring, wherein the sensitive group comprises a housing and a photosensitive drum; the housing comprises a storage groove; the photosensitive drum is arranged on the housing at one side of the storing groove; the toner cartridge is arranged in the storing groove in a detaching way; the torsion spring is arranged in the storing groove; one segment of the torsion spring is arranged in the housing and the opposite segment of the torsion spring is against the side of the toner cartridge back to the photosensitive drum, so that the toner cartridge can move toward the photosensitive drum.

The invention discloses a preparation method of an RF-MEMS switch composite sacrificial layer, and belongs to the RF-MEMS device manufacturing technology field. The method comprises the steps of planarization filling, sputtering etching of a metal sacrificial layer, preparation of a photoresist sacrificial layer and the like. By adopting the method disclosed by the invention, the flatness of the MEMS switch beam can be improved, and the preparation of the switch beam with the low contact distance of 10-500nm is realized, so that the reliability of the MEMS switch is improved, and the driving voltage of the MEMS switch is reduced.

The invention discloses a novel material sorting control system. The novel material sorting control system mainly comprises a power module, a PLC module, a servo motor control system operating independently, a weight detection module, a servo motor module, a servo driver module, a transmission device, a conveying belt 1, a conveying belt 2, a material pushing hand, a material pushing hand conveying belt, a sorting mouth slide, a material pushing hand sliding rod, a small control module, a proximity switch and a photoelectric induction switch. Two servo drives and servo motors respectively drive the conveying belt 1 and the material pushing hand to move horizontally, and the materials can enter a sorting region equidistantly to sort through mutual cooperation between the conveying belts 1 and 2. The complete control system provided by the invention can control a material sorting line, thereby sorting the materials automatically and accurately.

The invention discloses a grabbing mechanism distance adjusting device and a logistics conveying line, relates to the field of material conveying, and aims to accurately adjust the distance between grabbing mechanisms. The grabbing mechanism distance adjusting device comprises a supporting base, a driving piece, at least two distance changing transmission parts and at least two connecting pieces. The supporting seat is configured to provide support; the driving piece is rotatably mounted on the supporting seat; and one end of each variable-pitch transmission part is rotationally connected with the driving part. Each connecting piece can be mounted on the supporting seat in a linear moving manner; the connecting pieces are in one-to-one correspondence with the variable-pitch transmission parts, and the connecting pieces are rotatably connected to the other ends of the variable-pitch transmission parts. According to the technical scheme, precise control over the distance between the connecting pieces is achieved; the connecting pieces are used for installing the grabbing mechanisms, and therefore the distance between the grabbing mechanisms can be adjusted.

the invention relates to a forming test mold and method for the chopped fiber-cement-based material test piece. The test mold is characterized in that four straight edges of a lower test mold and fourstraight edges of an upper test mold in the test mold form a rectangular frame body, and cross sections of the lower test mold and the upper test mold are the same; the lower test mold is fixed on anupper surface of the base; the upper test mold is arranged on the lower test mold, the upper test mold is fixedly connected with the lower test mold, and the center of the upper test mold frame bodyis located over the center of the lower test mold frame body; the method comprises steps of step 1, coating release agent on the lower test mold and a base, pouring a cement-based material into an upper end of the lower test mold, leveling and flattening; 2, extending the chopped fibers into an upper surface of the cement-based material, then fixing the upper test mold coated with the release agent to an upper surface of the lower test mold, and pouring the cement-based material into an upper end of the upper test mold to be flush with an upper end of the upper test mold and then flattening; 3, after molding for 20-24 h, detaching the upper test mold, and taking out the molded chopped fiber-cement-based material test piece. The method is advantaged in that a real interface state can be better reflected, the structure is simple, manufacturing is convenient, and practicability is stronger.