39results about How to "Avoid Defective Defects" patented technology

The invention relates to a bi-directional barb exiting sliding block mechanism which is applied to a mould. The mould comprises an upper fixing plate, a female mould plate and a male mould plate. The bi-directional barb exiting sliding block mechanism comprise an outer sliding block, a wedge and an inner sliding block, wherein the outer sliding block is arranged on the female mould plate; the front end of the outer sliding block extends into a cavity for shaping the outer-side barb of a product; the rear end of the outer sliding block is provided with an inclined T-shaped slot; the upper end of the wedge is arranged on the upper fixing plate; the lower end of the wedge passes through the female mould plate; the side surface of the wedge is fixedly provided with a T-shaped block in a sliding fit with the inclined T-shaped slot of the outer sliding block; when the mould is opened, the T-shaped block drives the outer sliding block to outwards slide to exit the outer-side barb of the product; the inner sliding block is arranged on the male mould plate in a sliding mode; the front end of the inner sliding block extends into a cavity and bends upwards to shape the inner-side barb of the product; the rear end of the inner sliding block is fixedly provided with an inclined guide pillar which is in the opposite direction with the T-shaped slot; the inclined guide pillar is movably penetrated in the inclined guide hole of the female mould plate; and when the mould is opened, the inclined guide hole drives the inner sliding block by the inclined guide pillar to inwards slide to exit the inner-side barb of the product.

The invention discloses a surface roughness measurement system and a surface roughness measurement method. The measurement system comprises a supporting device, an electric device, a laser distance measurement device, a communication device, an inclination angle measurement device and a control processing device, wherein the supporting device is used for supporting the electric device, the laser distance measurement device and the inclination angle measurement device; the electric device is used for driving the laser distance measurement device to uniformly move inthe horizontal direction of the supporting device under the control of the control processing device; the irradiation direction of the laser distance measurement device is vertically downward; the laser distance measurement device is used for measuring the distance to a ground point under the control of the control processing device and feeding the measured value back to the control processing device; the communication device is used for guaranteeing data communication between the laser distance measurement device and the control processing device; the inclination angle measurement device is used for measuring the inclination angle between the supporting device and the horizontal direction, and the control processing device is used for controlling the overall system, controlling the electric device and the laser distance measurement device to work through a transmission instruction, receiving and storing the measured data, and calculating a roughness parameter. The measurement system disclosed by the invention adopts a non-contact method to measure; the measurement direction is vertically downward, and the measurement method is suitable for various complicated and destroyed earth surfaces.

Method of reeling a series of RFID tags and RFID tag roll are provided in the invention. A series of RFID tags is reeled around a reel core formed by a core material and a stress absorbing material lapped around the core material to absorb a stress produced in reeling the series of RFID tags. In the series of RFID tags, a number of RFID tags each having an antenna and a circuit chip connected to the antenna and performing radio communication with the antenna are formed with a predetermined pitch on a long-belt-like and flexible base.

The invention discloses a roof greening frame body and a manufacturing method. The roof greening frame body of the present invention includes: a shelf frame, which has at least an upper frame and a lower frame; a drainage anti-seepage device installed on the shelf frame for discharging accumulated water and preventing the accumulated water from seeping on the roof surface; and installing It is used as a planting insulation layer for green planting on the drainage anti-seepage device. The roof greening frame body of the present invention can collect and quickly discharge accumulated water, which is convenient for greening and planting, does not cause plants to wither, and can also prevent the leakage of accumulated water on the roof surface, avoiding damage to the roof caused by water seepage, and the roof surface The thermal insulation effect is good; at the same time, the roof greening frame body uses less soil, which can avoid the defects caused by the overload of the roof soil layer. In addition, the present invention also provides a method for making the above-mentioned green roof frame body, which is simple and flexible, and can be applied to green roofs of various types and structures.

The invention relates to a method for extracting Al-Ce tubular intermetallic compound from magnesium alloy and a product, and belongs to the technical field of compound extraction in alloys. In the method, perchloric acid and acetic acid are taken as raw materials for preparing an extraction liquid, magnesium alloy containing Al-Ce tubular intermetallic compound is dissolved in the extraction liquid, then in the later period, centrifugation, washing and drying are performed, and the Al-Ce tubular intermetallic compound is prepared. According to the method, the extraction rate is high, the sound tubular morphology of the finally extracted Al-Ce tubular intermetallic compound is guaranteed, and the method is simple and easy to operate, low in cost and suitable for expanded production.

The invention discloses a digital image acquisition device of an external transmission electron microscope. The digital image acquisition device comprises an external shell and a CCD camera, wherein an opening is formed in at least one side of the external shell; the CCD camera is arranged at an open end of the external shell; the CCD camera converts a photosignal into an electric signal; and the external shell is detachably fixed outside an observation window of the transmission electron microscope. According to the digital image acquisition device of the external transmission electron microscope, the CCD camera is arranged outside the observation window and is arranged outside a transmission electron beam path and a bottom CCD system does not need to be used, so that the defects that the bottom CCD system is bombarded by electrons and easily damaged in the transmission electron beam path in the prior art are avoided. Meanwhile, if the CCD camera is damaged, one external device is replaced, so that the problem that maintenance is troublesome due to the fact that components of the transmission electron microscope need to be dismantled when the CCD camera is replaced in the prior art is solved. Furthermore, the external device disclosed by the invention is suitable for various models of transmission electron microscopes.

The invention discloses a light-emitting display backplane, an organic light-emitting display and a manufacturing method thereof. In the invention, the light-emitting display backplane includes several organic light-emitting display devices formed on an array substrate, and a plurality of organic light-emitting display devices arranged between adjacent organic light-emitting display devices. The pixel definition layer between them also includes: several supports formed on the pixel definition layer for supporting the encapsulation substrate opposite to the light-emitting display backplane; wherein the supports include support parts; The cross section of the support part in the direction perpendicular to the plane where the array substrate is located is an inverted trapezoid, the inverted trapezoid is a trapezoid whose upper base is longer than the lower base, and the angle between the lower base and the waist is an obtuse angle. Through the present invention, the contact layer and the electrode layer have separate structures, so that when the contact layer is deformed, the electrode layer is not affected by the deformation, and the stability and reliability of the organic light-emitting display are improved.

Disclosed is a method for measuring the posture of a non-contact type excavator working device based on the visual measurement. A circular piece with obvious image saddle point characteristics is pasted on the working device to be used as a mark characteristic point, then an industrial camera on a cab machine frame is used for shooting an image of the excavator working device, a saddle point detection method is applied to online detecting all image saddle points, comprising the characteristic piece center points, on the image of the working device in real time, image saddle points of non-characteristic piece center points are filtered out through the distance between characteristic pieces, the inclined angles of components of the working device are obtained through the connecting line inclined angle between the characteristic piece center points, and therefore the posture of the working device is measured. According to the measuring method, the posture of the excavator working device can be dynamically measured, no easily-damaged and precise parts are arranged on the working device, the reliability of measurement and control over an excavator is improved, and the maintenance cost is reduced. The detection result is accurate, the calculation steps are few, the method is simple, the measured dynamic response speed is high, and the real-time performance is good.

The invention relates to a preparation method and a product of a negative Poisson's ratio biological-based rigid foam material, belonging to the technical field of materials. In this method, bio-based rigid foam materials are first prepared by supercritical fluid foaming technology, and then bio-based rigid foam materials are used as raw materials to obtain negative Poisson's ratio bio-based rigid foam materials by heating-three-dimensional axial compression method. foam material. The method is simple and easy to operate, has low equipment requirements and low cost, and is suitable for enlarged production. The foam material prepared by this method is not only light and degradable, but also has excellent mechanical properties such as compression and shock resistance, and has good application prospects in the fields of aerospace, automobile, ship, encapsulation and the like.

The invention discloses a twisting mold of flat steel and a flat steel twisting method. The twisting mold of the flat steel comprises a base, a supporting seat I, a supporting seat II and a rotating block, the supporting seat I and the supporting seat II are fixedly arranged on the upper surface of the base in a face-to-face mode, the rotating block is arranged between the supporting seat I and the supporting seat II, and the rotating block is rotatably and movably connected with the supporting seat I; the rotating block is provided with an inserting groove I, the supporting seat II is provided with an inserting groove II, the inserting groove I and the inserting groove II are arranged in a fact-to-face mode, and the shape and the size of the inserting groove I and the inserting groove II are matched with the size and shape of the portion to be clamped of the flat steel to be processed; a rotating and driving unit drives the rotating block to rotate relative to the supporting seat I; a distance which matches with the length of the flat steel is reserved between the rotating block and the supporting seat II. The twisting mold of the flat steel has a simple structure and guarantees the twisting accuracy through the structure of the twisting mold of the flat steel. According to the flat steel twisting method, a mechanical cold working mode is utilized, material damage caused by uneven heating is avoided, meanwhile, the labor intensity of workers is reduced and the processing efficiency is improved.

A composite home decorative wall covering synthetic leather, comprising a substrate layer, an intermediate layer, and a surface layer. The substrate layer, the intermediate layer and the surface layer are connected by means of hot-pressing lamination; the substrate layer comprises the following components in parts by weight: 100 parts of PVC resin, 30-40 parts of calcium carbonate, 50-60 parts of a plasticizer, and 5-10 parts of a stabilizer. The intermediate layer comprises the following components in parts by weight: 100 parts of PVC resin, 50-60 parts of a plasticizer, 8-16 parts of bamboo modal fibers and 16-32 parts of nano aluminum oxide. The surface layer comprises the following components in parts by weight: 100 parts of PVC resin, 30-40 parts of glass fibers, 15-25 parts of carbon fibers and 5-10 parts of nano aluminum oxide. The preparation method comprises the following steps: (1) preparation of the intermediate layer; (2) preparation of the substrate layer; (3) preparation of the surface layer; (4) hot-pressing lamination.

A method for extracting chlorella growth factor (chlorella extract) belongs to the field of biological technology and includes the steps of warm-water bath, breaking wall, enzymolysis, separation and residue utilization. This invention adopts the method of adding enzyme to make hydrolysis extract the chlorella extract so that its temp. requirement is low and its solution is neutral. This invention also adopts the process of breaking wall and fully hydrolyzes amino acids and nucleotide, etc. contained in cell.