7results about How to "Reduce darkening" patented technology

The invention relates to the technical field of nuclear power, in particular to a special centering tool for a two-end-supported bearing seat and a centering method. The centering tool is semicircular, a groove is formed in the middle of the centering tool, and the thickness of the groove is matched with that of the bearing; a small boss is arranged on one side of the groove, and a large boss is arranged on the other side of the groove; the large boss is higher than the small boss, and the small boss is used for constraining the side face position of the bearing outer ring; the large boss is used for constraining the side face position of the bearing inner ring. The centering method comprises the following steps: mounting the bearing seat bracket; the bearing seat is of a center-split structure, and the lower half bearing seat is connected to the bearing seat support in a loose mode. The two bearings are installed at the shaft diameter positioning positions of the rotating shaft respectively and fixed through round nuts and lock washers; according to the technical scheme, the centering tool is used for fixing the inner ring and the outer ring of the bearing; the bearing is installed back into the lower half bearing seat, external force is continuously applied to the bearing seat, and the bearing seat is in the dynamic adjustment process until the bearing completely falls into the lower half bearing seat; a bolt is fastened between the lower half bearing seat and the bearing seat bracket; and the centering tool is removed, and the upper half bearing seat and the lower half bearing seat are connected and fixed. The inner ring and the outer ring of the bearing are ensured to be completely perpendicular to the rotating shaft and are fixed, and the bearings on the two sides can be centered conveniently.

The utility model relates to the technical field of coating, and discloses vacuum coating equipment which comprises a vacuum box body, a vacuum sputtering chamber, a first cooling chamber and a second cooling chamber which can be communicated in sequence are arranged in the vacuum box body, a central heater is arranged in the middle of the first cooling chamber, a side heater is arranged on the side edge of the first cooling chamber, and the central heater is connected with the second cooling chamber. The temperatures of the central heater and the side heaters are adjustable, the vacuum sputtering chamber comprises a plated part moving part, a first target material and a second target material, and the plated part moving part can move among the vacuum sputtering chamber, the first cooling chamber and the second cooling chamber; the central heater and the side heater are arranged corresponding to the position of the moving part of the plated part in the vacuum sputtering chamber and the first cooling chamber, and the central heater and the side heater capable of adjusting the temperature are arranged corresponding to the moving part of the plated part in the first cooling chamber, so that the vacuum annealing temperature of the plated part can be controlled and adjusted; and the phenomena that the edge of the plated part is blackened and the resistance is increased are reduced.

The utility model discloses a steel core reinforced FRP pultruded section breaking and cutting device, and relates to the technical field of cutting equipment, the steel core reinforced FRP pultruded section breaking and cutting device comprises a rack, the inner bottom wall of the rack is provided with a section conveying piece, the inner top wall of the rack is fixedly connected with an electric push rod in an inserted mode, and the extending end of the electric push rod is fixedly provided with an adjustable double-head cutting piece. The adjustable double-head cutting piece is blocked through the blocking frame, so that the possibility that the adjustable double-head cutting piece directly cuts a cutter steel core is reduced, the two cutter heads of the adjustable double-head cutting piece are used for cutting the steel core and FRP respectively, the loss increase of the cutter heads is reduced, and the possibility that the FRP part on a sectional material is ablated and blackened is reduced; the first motor drives the rotating disc to rotate to control the section bar to rotate, when the two side plates expand, the hinge rod is promoted to be unfolded, the two section bar conveying cylinders are pulled to contract, and therefore the section bar is clamped through the section bar conveying cylinders so that the section bar can be conveyed conveniently, and the section bar is more convenient to rotate and convey.

The present invention provides a liquid crystal display protection plate that can suppress the reduction of visibility such as color unevenness, blackening and coloring when the liquid crystal display protection plate located on a liquid crystal screen is observed through a polarizing filter. The liquid crystal display protection plate (1) includes a resin plate (16) having a base material layer (22) laminated on both sides of a phase difference adjustment layer (21). The phase difference adjustment layer includes a photoelastic coefficient having an absolute value of 10.0×10 ‑12 / Pa or less and the absolute value of the orientation birefringence is 10.0×10 ‑4 ~100.0×10 ‑4 The base layer includes a transparent thermoplastic resin (A) having an absolute value of a photoelastic coefficient of 10.0×10 ‑12 / Pa or less and the absolute value of the orientation birefringence is less than 10.0×10 ‑4 The phase difference adjustment layer has a Tg higher than that of the substrate layer. The total thickness of the substrate layer is greater than that of the phase difference adjustment layer. The Re value of the resin plate is 50 to 330 nm.

The invention provides a glue pressing and edge sealing structure and a glue pressing method for a multicolor mixed-match stripe zipper. The glue pressing and edge sealing structure comprises a pair of zipper cloth belts and adhesive tapes attached to the surfaces of the zipper cloth belts. The zipper cloth belt is at least provided with a first yarn-dyed stripe area and a second yarn-dyed stripe area in the length direction. A first twill pattern area is pressed at the position, corresponding to the first yarn-dyed stripe area and the second yarn-dyed stripe area, of the adhesive tape, and the first twill pattern area completely covers the adhesive tape in the length direction of the zipper cloth tape; the width of the first twill pattern area in the width direction of the zipper cloth belt is larger than the total width of the first yarn-dyed stripe area and the second yarn-dyed stripe area. Second twill pattern areas are pressed on the two sides of the first twill pattern area of the adhesive tape in the width direction of the zipper cloth tape, and the pattern depth of the second twill pattern areas is larger than that of the first twill pattern areas. The method has the advantage that the blackening or fiber color crossing condition of the multicolor mixed-match stripe zipper in the glue pressing and edge sealing process can be effectively avoided.

The invention discloses a laser cutting machine for furniture production, and belongs to the technical field of furniture processing.The laser cutting machine for furniture production comprises a bottom plate, a feeding mechanism is fixedly mounted on one side of the front end of the top of the bottom plate, and a conveying mechanism is fixedly mounted in the center of the front end of the top of the bottom plate; and a feeding mechanism is fixedly installed at the position, close to the other side of the material conveying mechanism, of the top of the bottom plate, a machine box is fixedly installed on the other side of the rear end of the top of the bottom plate, and a material rotating mechanism is installed at the top end in the machine box. By designing the feeding mechanism, the material conveying mechanism, the material pushing mechanism and the material transferring mechanism, the whole process does not need to be intervened by workers, specified work is efficiently completed at all stations, in the material transferring mechanism, feeding and material pushing are automatically completed through two positioning frames correspondingly, follow-up laser cutting is assisted, all the stations do not need to wait, and the working efficiency is greatly improved. The processing efficiency is high.

This invention relates to the field of laser cutting technology and discloses a laser cutting device for copper plates used in copper crafts processing. The device includes a laser cutting machine housing and a laser cutting head. Y-axis linear motors are mounted on both sides of the top of the laser cutting machine housing, and a portal frame is positioned between the Y-axis linear motors. An X-axis linear motor is fixed to one side of the top beam of the portal frame. The laser cutting head is fixed to one end of the slide. A fixing ring is fixed to the lower half of the outer wall of the laser cutting head, and an external gear ring is fixed to the outside of the fixing ring. This invention achieves a 360° adjustable preheating and rapid cooling mechanism around the laser cutting head, allowing it to follow the cutting direction of the laser cutting head in real time. This ensures that the electric heating plate always precisely covers the area to be cut, and the hollow water-cooled housing always precisely covers the cutting area, achieving seamless integration of preheating, cutting, and rapid cooling. This maximizes the effects of preheating and rapid cooling, further improving cutting accuracy and cut quality.