325results about How to "Easy to draw" patented technology

The invention relates to the technical field of screening equipment, and provides a dewatering screen for sand-mud separation, the dewatering screen comprises a base, a screen box and a vibration motor, the screen box is mounted on the base through a plurality of rubber springs, and the vibration motor is mounted on the screen box; a first-level screen and a second-level screen are arranged in the screen box from bottom to top in a supporting mode, and meshes of the second-level screen are smaller than those of the first-level screen. A first muddy water collecting tank is arranged on the base, and a swirler is further arranged on the base in a supporting manner; a cyclone bottom flow port is located above the feeding end of the second-stage screen, a first slurry pump is arranged on one side of the first muddy water collecting tank, the water inlet end of the first slurry pump is communicated with the first muddy water collecting tank, and the water outlet end of the first slurry pump is communicated with a tangential feeding port of the cyclone. According to the recycling device, small-particle-size gravel in muddy water generated by the dewatering screen is recycled, and resource waste is effectively reduced.

The invention relates to a drawing method and device based on touch panel pressure detection, a medium and equipment, and the method comprises the steps: determining a touch distance between a touch starting point of a touch drawing operation on a touch panel and a pressure sensor of the touch panel, and determining a resolution ratio of the touch panel to a display screen; determining a target display scale of the drawing coordinate system according to the resolution ratio, and adjusting the display scale of the drawing coordinate system according to the target display scale; determining drawing information of the drawing pen according to the pressure at the touch starting point, and controlling the drawing pen to execute pressing drawing according to the drawing information; in the pressing drawing process, in response to a newly-added touch drawing operation on the touch panel, determining drawing adjustment information according to pressing point information of the newly-added touch drawing operation and whether a track pressing point in the pressing movement track displaces or not; drawing adjustment is conducted according to the drawing adjustment information, and the drawing pen is continuously controlled to execute pressing drawing with the pressing movement track as the drawing track based on the completed drawing adjustment.

The invention belongs to the technical field of clothing pattern making, and particularly discloses an auxiliary ruler. According to the auxiliary ruler with the structure, the four second reference rulers are rotatably mounted on the body, and the four second reference rulers are arranged at intervals in the extension direction of the first scale marks to serve as a shoulder width ruler, a waist width ruler, a hip width ruler and a knee width ruler respectively, so that a designer can conveniently and quickly draw a required human body proportion; the efficiency of a designer for completing a human body design drawing and a process sheet can be improved, and then corresponding clothes can be conveniently drawn according to the human body proportion.

The invention provides a coal seam gas extraction drilling anti-sloughing supporting device and a supporting method, the coal seam gas extraction drilling anti-sloughing supporting device comprises a supporting screen pipe, the supporting screen pipe comprises a plurality of screen pipe fixing plates, and every two adjacent screen pipe fixing plates are connected through a screen pipe moving part; the damping assembly is connected with the screen pipe fixing plate in a sliding mode, and the damping assembly is used for conducting anti-sloughing supporting on the coal seam gas extraction drill hole; the center pipe is connected with the multiple damping assemblies through the multiple telescopic control assemblies. The positions of the screen pipe fixing plate and other structures can be adjusted through the telescopic control assembly, so that the supporting screen pipe can stretch out and draw back, the supporting screen pipe can be conveniently placed into a coal seam gas extraction drill hole, the supporting screen pipe can be unfolded, and in the unfolding process of the supporting screen pipe, the supporting screen pipe is not prone to falling off. The damping assembly firstly makes contact with the wall of the coal seam drill hole and generates secondary stress disturbance on the coal seam, gas extraction is facilitated, when the supporting screen pipe is completely unfolded, the damping assembly is inserted into the coal seam, damage of the coal seam to the screen pipe and other structures can be reduced, and the supporting effect on the coal seam gas extraction drill hole is achieved.

The invention provides a quartz crucible for continuously drawing crystalline silicon and a preparation method of the quartz crucible, and belongs to the technical field of crucible manufacturing. Comprising the following steps: S1, performing electric arc melting on quartz sand to obtain a blank quartz crucible with a smooth inner surface and a rough outer surface; s2, the blank quartz crucible is sequentially subjected to outer surface sand blasting, outer surface grinding, height cutting, first cleaning, outer surface fire machining polishing, second cleaning and drying procedures, and the inner surface roughness Rlt is obtained; the thickness is 5 microns, and the roughness of the outer surface is Ralt; the invention discloses a 5-micron quartz crucible. Therefore, the quartz crucible can reduce oxygen brought into silicon liquid in the process of drawing crystalline silicon, the oxygen content of the crystalline silicon is reduced, and the quality of the crystalline silicon is improved.

The utility model discloses a nine-die wire drawing device, which belongs to the technical field of wire drawing devices and comprises a base, a wire drawing component is arranged at the top of the base, a limiting component is arranged on one side of the wire drawing component, a stabilizing component is arranged on one side of the limiting component, and a ventilation component is arranged at the top of the base. According to the device, the wire drawing assembly, the limiting assembly and the stabilizing assembly are arranged, when the device is used, a steel pipe or other tubular steel is inserted into a grid cylinder, then a heating ring is started, heat penetrates through the grid cylinder to heat the steel pipe, and the steel pipe is cooled; the use is simple and convenient, a stabilizing rod is pulled to drive a limiting block to retract to the interior of a limiting bin, the wire drawing die in a die groove can be replaced, wire drawing operation can be conveniently conducted on steel, meanwhile, the wire drawing die is conveniently replaced, and the practicability is high. And steel wires with different thicknesses can be conveniently drawn.

The invention discloses a lane line vector graph generation method and device, and solves the problems of low efficiency and high cost of lane line vector graph drawing in the prior art. A lane line vector graph generation method is used for generating a high-precision map containing a lane line based on point cloud data, and comprises the following steps: obtaining point cloud data of a target road; capturing point cloud data points in response to the GUI, determining plane coordinates of a starting point, an inflection point and / or an end point of any part of the lane line, and connecting adjacent nodes to draw a basic lane line; generating interpolation nodes along the basic lane line according to a preset spacing value; and assigning the elevation value of the ground point cloud data point corresponding to the vertical line of each interpolation node to the interpolation node to determine a target lane line or a target road line. According to the invention, the efficiency and accuracy of collection and production are improved, the efficiency of high-precision map data production can be greatly improved, and then the current demand of intelligent driving for a high-precision map can be ensured.

The invention relates to the technical field of building construction, and discloses a carborundum concrete solidified terrace structure and a construction method thereof. A wall edge and a column foot which are in contact with the terrace structure are surrounded by extruded sheets; the terrace structure comprises a parking area and a driving area; each of the parking area and the driving area comprises a concave-convex drainage plate, a non-woven fabric, a fine aggregate concrete layer, a carborundum layer and a curing layer which are sequentially arranged on the bottom plate from bottom to top; the parking area and the driving area have color subareas; the face, provided with the protruding blocks, of the concave-convex drainage plate faces downwards, and a drainage channel is formed between every two adjacent protruding blocks. The drainage channel is communicated with the sump; exhaust holes penetrating through the floor structure are formed in the transverse and longitudinal joints of the concave-convex drainage plates. The principle of'dredging 'is adopted, and seepage water of the bottom plate is drained by arranging the concave-convex drainage plate; and the exhaust hole penetrating through the floor structure is arranged and used for balancing the pressure of the drainage channel, so that accumulated water can be smoothly drained. The construction method is simple and good in hydrophobic effect.

The utility model discloses a bundling device for micro-expanded direct yarn production, and belongs to the technical field of direct yarn production. The defects that in the prior art, due to the fact that a traditional copper rod touches a spinning cake, the spinning cake is easily extruded to deform, and a wire drawing machine is locked are overcome. A main body structure of the device comprises a bushing, an oil coating roller, a three-splitting bundling wheel, a yarn blocking rod device and a yarn arranging box, tows pass through the bushing, the oil coating roller, the three-splitting bundling wheel, the yarn blocking rod device and the yarn arranging box in sequence, the three-splitting bundling wheel is installed on a bundling wheel installation shaft, the yarn blocking rod device is installed on a fixing plate, and a yarn arranging box copper bar is arranged on one side of the yarn arranging box. The two ends of the flat cable box copper bar are elastically connected with the two ends of the flat cable box through spring expansion pieces. The device is mainly used for producing the micro-expanded direct yarns.

The utility model relates to the technical field of constructional engineering, in particular to a constructional engineering cost auditing device which comprises a drawing board component. The storage part is rotationally connected with the drawing board part; the storage part is detachably connected with an insertion plate, and the insertion plate is used for covering the storage part or supporting the storage part; the lifting handle part further penetrates through the drawing board part and the storage part and positions the drawing board part and the storage part. According to the construction engineering cost auditing device, the two storage parts are rotationally connected with the drawing board part, so that the device is convenient to unfold, use and store, and the device is convenient to use and easy to operate. And through the arrangement of an insertion plate, the storage part can be stored, and the device can be supported.

The utility model provides a sealing type hole sealing grouting device which comprises a drainage exhaust pipe, a grouting pipe, a blowout prevention extraction pipe, a pipe cap, a bag, filter screen cloth, a grout supplementing valve and an explosion valve, the drainage exhaust pipe and the grouting pipe are fixed on two sides of the blowout prevention extraction pipe, the hole bottom section of the blowout prevention extraction pipe is sealed by the pipe cap, and the bag is arranged on the bag. The tail end of the drainage and exhaust pipe is wrapped by filter screen cloth, the bag is fixed to the position, close to an orifice, of the grouting pipe, the two ends of the bag are sealed through bag plugs, the drainage and exhaust pipe is further provided with a grout supplementing valve, a hole is formed in the position, corresponding to the drainage and exhaust pipe, of the grout supplementing valve, and an explosion valve is installed at the tail end of the grouting pipe. The tail end of the blowout prevention extraction pipe is sealed by the pipe cap, so that a bag is saved, and the problem that the bag is scratched and leaks slurry in the mounting process is solved; according to the drainage and exhaust pipe, grout can be supplemented to the hole sealing section through the grout supplementing valve, and the effect that hole sealing of the hole sealing section is tight and free of air leakage is guaranteed.

The invention relates to the technical field of spinning combing, and discloses a method for determining an equal-gauge combing integral cylinder, which comprises the following steps of: 1, establishing a mechanism model of a nipper of a cotton spinning combing machine and a driving mechanism of the nipper; 2, establishing a coordinate system with a nipper pendulum shaft as the center, and constructing a mathematical model of the position coordinates of the lower edge point P of the nipper lip of the upper nipper; 3, the coordinate positions [# imgabs0 # and # imgabs1 #] of different rack cylinder needle teeth are determined; 4, according to the carding timing, the carding gauge # imgabs2 is determined; and step 5, determining the compensation distance of different needle rows of the cylinder during equal carding gauge. According to the combing integral cylinder designed and manufactured by the technology, equal-spacing carding can be ensured all the time in the working process, the carding effect is maximized, the content of neps, defects and short fibers of combed slivers can be remarkably reduced, the yarn evenness of the combed slivers is improved, physical and mechanical properties such as strength, luster and appearance of combed yarns are improved under the same condition, and the quality of the combed yarns is improved. And the quality of combed slivers and resultant yarns is improved.

The invention discloses a drawing workbench for industrial design, comprising a platform, a drawing board, a computer display screen and a sleeve rod, wherein a first placement groove is provided in the middle of the surface of the platform, a sleeve rod is installed in the middle of the first placement groove, limiting grooves are provided on both sides of the top of the sleeve rod, a push block is movably installed on one side of the limiting groove, an inner rod is movably sleeved inside the sleeve rod, a receiving groove is provided on both sides of the bottom end of the inner rod, a spring is installed inside the receiving groove, a limiting ball is installed on the top of the spring, and the limiting ball is engaged in the limiting groove, a third rotating shaft is installed on the upper end of the inner rod, a second rotating shaft is installed on the top of the third rotating shaft, the second rotating shaft is rotatably connected to the middle bottom end of the drawing board, a tool groove is installed on one side of the upper end of the drawing board, and a baffle is installed on one side of the tool groove. The workbench of the invention is provided with a drawing board that can be rotated and lifted, and the direction and angle of the drawing board can be adjusted to facilitate drawing by draftsmen.

The present disclosure relates to pipe welding, and in particular to a pipe measuring welding machine. The present disclosure comprises a fixing member, on which a pair of mutually meshing gears are rotatably connected, and the two gears are fixedly connected to a connecting rod, and a mounting member for mounting the pipe is provided at one end of the connecting rod away from the gears, and the two connecting rods are symmetrically arranged with each other, and a dial for measuring the angle between the two connecting rods is provided on the fixing member, and a marking portion is also provided on the fixing member, and the marking portion is located at the angular bisector of the angle. The present disclosure can effectively determine the angular bisector of the angle of the connecting rod by providing a connecting rod meshing with gears, and then facilitate marking the pipe through the marking portion, and combined with the fixing effect of the fixing member, can realize rapid marking, cutting and welding of the pipe, which greatly improves the work efficiency.

The present invention discloses an immersive rapid modeling method based on a body skeleton convolution surface, comprising the following steps: (1) in a Unity3D environment, a user wears an immersive virtual reality device, selects a desired body skeleton brush, determines the size, angle and position of the body skeleton brush, and uses the body skeleton brush to draw a model; (2) according to the selected body skeleton brush size, angle and position, a GPU calculates the body skeleton potential energy value, and generates a new potential energy map after the body skeleton brush is drawn; (3) the new potential energy map generated in step (2) is passed to a marching cube program, the vertex position, topological relationship and normal vector of the triangular face are obtained, and the modeling is completed by rendering. The immersive rapid modeling method based on a body skeleton convolution surface provided by the present invention proposes a body skeleton brush based on GPU parallel computing, and a user can use body skeleton brushes of different shapes to directly combine and draw a complex model.

The present invention provides a roller profile for reducing the internal thread of a steel pipe rolled by an Assel unit. An entrance cone area, a shoulder area and a rolling area are sequentially arranged from the entrance side to the exit side of the roller. The entrance cone area consists of a first entrance cone area and a second entrance cone area, wherein the first entrance cone area is located between the second entrance cone area and the entrance end of the roller, wherein the ratio of the length of the first entrance cone area along the roller axis to the length of the second entrance cone area along the roller axis is 7:10, and the entrance cone angle α1 of the first entrance cone area differs from the entrance cone angle α2 of the second entrance cone area by 1°; the ratio of the length of the rolling area along the roller axis to the length of the second entrance cone area along the roller axis is 4:5; the present invention solves the technical problem that the spiral concave-convex phenomenon on the inner surface of a steel pipe affects the appearance of the steel pipe and seriously affects the use by users.

This invention provides a method for establishing a distribution model of hydrocarbon expulsion efficiency of lacustrine clay source rocks and a method for determining the hydrocarbon expulsion efficiency of lacustrine clay source rocks. The template establishment method includes: acquiring multiple samples for model establishment in the study area; determining the lower limit of organic carbon content (TOC) and the maximum hydrocarbon generation per unit mass of organic matter in the study area based on the organic carbon content (TOC), hydrocarbon index (HCI), and residual hydrocarbons (S1) of each sample; determining the hydrocarbon expulsion efficiency of each sample with an organic carbon content (TOC) not lower than the lower limit of TOC based on the hydrocarbon index (HCI) and the maximum hydrocarbon generation per unit mass of organic matter; and determining the relationship model between hydrocarbon expulsion efficiency and organic carbon content (TOC) as the distribution model of hydrocarbon expulsion efficiency of lacustrine clay source rocks in the study area based on the hydrocarbon expulsion efficiency of each sample with an organic carbon content (TOC) not lower than the lower limit of TOC.

The utility model provides a gypsum dehydration system, which relates to the technical field of desulfurization wastewater treatment, and comprises a gypsum cyclone, a rapid settling tank and a middle water tank which are sequentially connected through an overflow port, a vacuum belt dehydrator is arranged below the gypsum cyclone and the rapid settling tank, a sand settling nozzle is arranged in the gypsum cyclone, the rapid settling tank is provided with a plurality of mud buckets, and the mud buckets are arranged in the middle water tank. The gypsum cyclone and a bottom discharge port of each mud bucket are connected to the upper side of the vacuum belt dehydrator and are sequentially arranged along the rotating direction of an upper-layer belt of the vacuum belt dehydrator, and the vacuum belt dehydrator is connected with a vacuum pump; the middle water tank is connected with a wastewater cyclone through a water tank delivery pump, and a bottom outlet of the wastewater cyclone is connected with a rapid settling tank; desulfurization slurry discharged from a desulfurization tower is introduced into a gypsum cyclone, and gypsum is distributed on a vacuum belt dehydrator according to the particle size of big end down through step-by-step treatment, and is rapidly dehydrated under the action of a vacuum pump. Gypsum gaps are large in bottom and small in top, blocking is not prone to occurring in the dehydration process, and the dehydration efficiency is improved.

The present invention relates to the technical field of energy-saving control of cold water systems, and specifically discloses an energy-saving control method for cold water systems of water-cooled test boxes, including: performing data processing on all in-box temperature monitoring data of each test box based on the temperature of the cold water system and the ambient temperature to obtain temperature processing data of each test box; constructing a temperature prediction matrix of each test box based on the temperature processing data of each test box, obtaining the predicted temperature value of each test box at the next temperature acquisition moment based on the temperature prediction matrix of each test box to obtain the judgment result of each test box; obtaining a punctuation connection diagram based on the judgment results of all test boxes and the test box position data, and coordinating and controlling the compressors of all test boxes based on the preset temperature threshold and the punctuation connection diagram to obtain energy-saving control results. The present invention is used to effectively reduce the energy consumption of the cold water system by more accurately controlling the compressors in the same cold water system.

The utility model provides a self-cleaning type wire drawing machine, which relates to the technical field of wire drawing machines and comprises a wire drawing machine body, a groove is arranged on the outer surface of one side of the wire drawing machine body, a motor is fixedly arranged on the inner bottom surface of the groove close to the center, and a rotating rod is welded on an output shaft of the motor. The outer surface of the rotating rod is sleeved with a rotating wheel disc, the bottom of the rotating wheel disc is rotationally connected with the top of the wire drawing machine body, a water tank is arranged in the wire drawing machine body, and a fixing block is fixedly connected to the outer surface of the front side of the water tank. The wire drawing machine solves the problems that a traditional wire drawing machine conducts wire drawing through a pulley, an existing wire drawing effect is slow, so that the use efficiency of the device is greatly reduced, the device is inconvenient to effectively use when used, and an existing wire drawing machine can generate a large amount of heat when used, so that the device is dirty and messy, and the use efficiency of the device is affected. And the use effect of the device is reduced.

The present invention relates to the technical field of two-component road marking equipment, and provides a cold spray two-component road marking machine, including a marking machine chassis and a handle connected to the marking machine chassis, a hydraulic oil tank is provided at the upper end of the marking machine chassis, two road marking paint buckets are provided on the marking machine chassis, namely, a road marking paint bucket of A and a road marking paint bucket of B, a first liquid pump is provided on the road marking paint bucket of A, a first infusion tube is connected through the road marking paint bucket of A, and the other end of the first infusion tube is connected through the road marking paint nozzle of A. The present invention overcomes the shortcomings of the prior art, has a reasonable design and a compact structure, solves the problems of the existing single-nozzle hot-melt marking machine, poor curing effect, inconvenient nozzle position adjustment and inconvenient addition of reflective glass beads, and the present application adopts a simple structural combination to solve the above problems, and is also easy to move and has strong practicality.

This invention discloses a method for increasing shale gas production from multi-stage fracturing shale formations. First, water containing water-absorbing resin is intermittently injected into the shale gas well, impacting the shale layer and creating multiple fractures, forming a primary fracturing process. Next, liquid nitrogen and sodium particles are injected into the shale gas well. The resin, already saturated with water, remains within the fractures. At this point, the liquid nitrogen cools the shale layer below its freezing point, causing the saturated resin to freeze and rapidly expand, forming a secondary fracturing process. Then, as the injected liquid nitrogen continues to vaporize, it further freezes the water and water-absorbing resin adsorbed by the shale, forming a tertiary fracturing process. When the temperature of the shale layer exceeds its freezing point, the expanded ice on the water-absorbing resin melts into water. At this point, the sodium particles react with the water, releasing a large amount of heat, causing the shale layer temperature to rise rapidly, creating a thermal shock to the low-temperature shale layer, forming a quaternary fracturing process. This completes the multi-stage fracturing process of the shale layer, effectively improving the extraction efficiency of shale gas.

A text annotation rendering method, system and storage medium, including obtaining and storing data to be annotated; obtaining and processing annotation information data; obtaining and processing configuration information, obtaining a display container ID, the writing direction and reading direction of the text rendering result, and the style information of the annotation block, and storing them; obtaining a DOM node according to the display container ID; creating a text container layer in the display container, writing the data to be annotated into the text container layer according to the writing direction and reading direction of the text rendering result, and adding an interactive response event to the text container layer; creating an annotation block container layer above the text container layer; converting the annotation information data into a corresponding annotation block and locating it to the corresponding position of the text container layer, completing and displaying the initial rendering result; performing the initial rendering after the rendering preparation of the text container layer and the annotation block container layer is completed; waiting for user interaction. The present invention can configure the writing direction and reading direction for multilingual scenarios to achieve efficient annotation.

The present invention belongs to the field of geological mineral resource prediction, and particularly relates to a multi-scale progressive prospecting prediction method for solid minerals based on geological big data. The present invention collects multi-scale geological, geophysical exploration data, geochemical exploration data, remote sensing and other data in the study area, and uses data mining technology and machine learning methods to achieve prospecting prediction and target area delineation. This method aims to combine three-dimensional geological models, machine learning methods, and data mining technologies to process geological big data in the prediction area, determine the target area progressively at multiple scales, and provide a prospecting prediction method for mineral resource prediction; based on prospecting case review, a prospecting knowledge map is constructed, and a prospecting process knowledge association map is drawn. According to the working scale, the geological, geophysical, geochemical and remote sensing data are divided into 1:500,000, 1:250,000, 1:50,000, 1:25,000 and 1:5,000, a three-dimensional geological model and attribute data mart are constructed, and the laws between mineralization conditions and mineralization controlling elements are analyzed to form a mineralization prediction model to achieve prospecting prediction.

The utility model discloses an angle adjustable electronic drawing board, which comprises a drawing board body, a support adjusting device is arranged on the back of the drawing board body, the support adjusting device comprises a first support frame and a second support frame, the first support frame is hinged to the drawing board body, and the second support frame is movably connected to the first support frame. The supporting and adjusting device is arranged on the back face of the drawing board body, the supporting and adjusting device is opened to form a fixed supporting structure, the direction, angle and height of the electronic drawing board can be adjusted by adjusting the second supporting frame, and therefore drawing is convenient, a user does not need to hold the electronic drawing board by hand for drawing, and use is convenient. Therefore, the effects of saving time and labor are achieved.

The utility model discloses a sofa with a ventilation and heat dissipation mechanism, which comprises a support frame, the sofa is mainly supported by the support frame, air in the support frame is exhausted by an exhaust fan, so that external air is sucked into a breathable sponge cushion for ventilation, and the ventilation and heat dissipation mechanism is used for ventilation and heat dissipation through a gap between a vent hole and an elastic support. Hot air on the breathable sponge cushion can be conveniently sucked into the supporting frame, the contact area between the backup plate and air in the supporting frame can be increased through the heat dissipation fin plates, then heat dissipation is better achieved, the height requirement of a user can be met through the supporting legs with different heights, the comfort level of the user is increased through the elastic supporting object, and the practicability is high. The heat dissipation fin plates are tightly attached to the supporting frame, a plurality of air channels can be formed, and therefore heat dissipation wind power is uniform.

The application provides a cleaving device and a cleaving method, and relates to the technical field of semiconductors. The first platform and the second platform are arranged, and when the first platform and the second platform move to contact each other, the first platform and the second platform can be used for fixing a product to be cleaved. A cutter can be used to draw a test line on the upper surface of the product to be cleaved. A CCD camera can be used to shoot the test line and display a scratch diagram of the test line. An angle adjusting mechanism can adjust the pitch angle and the rotation angle of the cutter according to the scratch diagram, so that the cutter tip contacts the upper surface of the product to be cleaved at an optimal line drawing angle. The optimal line drawing angle can also be referred to as the angle at which the cutter tip is perpendicular to the product to be cleaved. Therefore, a cleaving line with high precision, good flatness and good stability can be drawn on the product to be cleaved. Even if the cutter is worn, the pitch angle and the rotation angle of the cutter can be adjusted, so that the cutter tip contacts the product to be cleaved at the optimal line drawing angle, and the stability of the cleaving effect is good.

The utility model discloses a tool for assisting ink dots and folding line drawing of an air bag cover. A cover plate is detachably fixed on a bottom plate; the cover plate comprises a plurality of grooves used for covering ink dots and drawing folding lines and a plurality of induction pieces. The plurality of sensing pieces respectively correspond to one groove and are used for detecting whether the marking pen slides along the groove or not; the cut-parts are clamped through the cover plate and the bottom plate, it is guaranteed that the cut-parts cannot move in the scribing or ink covering process, and it is guaranteed that the positions of scribed lines and ink dots are correct; a groove is formed in the cover plate, so that a worker can draw along the groove; and a sensing piece is arranged on one side of the groove, when a folding line or an ink dot leaks the cover and the ink dot, the electric plug pin is in a locked state based on the controller, and the cover plate cannot be opened, so that the cut part cannot be taken out.

The utility model relates to the field of toys for children, in particular to a drawing board bookshelf which comprises a shelf body assembly, the shelf body assembly is arranged on the ground, the shelf body assembly comprises two first board bodies and a second board body, the two first board bodies are oppositely arranged and spaced by a preset distance, and the two second board bodies are oppositely arranged and spaced by a preset distance. The two first plate bodies are both perpendicular to the ground, each first plate body is provided with a plurality of mounting holes in a rectangular array, the mounting holes penetrate through the first plate bodies, the second plate body is located between the two first plate bodies, and the two ends of the second plate body are rotationally connected with the sides, close to each other, of the two first plate bodies. Books can be placed on the second plate body; and the drawing board assembly is arranged on one side of the frame body assembly. The drawing board has the advantages of being capable of being stored, compact in layout, small in occupied space and convenient and fast to move by effectively utilizing the structural configuration of the drawing board.

The invention provides a decoding method and a decoding system based on grid ROI setting. The decoding method comprises the following steps: acquiring a row number M and a column number N corresponding to a grid ROI; acquiring a bar code image; uniformly dividing the barcode image into M * N ROIs (Region Of Interest); and performing multi-thread parallel decoding on the image information corresponding to the M * N ROIs. According to the method, the row number M and the column number N corresponding to the grid ROI are obtained, the row number M and the column number N are consistent with the row number and the column number of the materials distributed at regular positions on the production line, the bar code image is uniformly divided into the M * N ROIs, and the bar codes in the M * N ROIs are subjected to multi-thread parallel decoding, so that the ROI region is simple to draw and is not easy to make mistakes, the decoding accuracy is ensured, and the decoding efficiency is improved. And the decoding time is effectively saved, and the decoding efficiency is improved.