6486 results about "Printing press" patented technology

The invention relates to the technical field of digital printing machines, in particular to an intelligent ink droplet control method and system of a digital printing machine and the digital printing machine. The method comprises the steps of real-time data acquisition, multi-dimensional parameter modeling, real-time ink droplet behavior prediction, self-adaptive ink jet parameter adjustment, closed-loop feedback control, medium characteristic self-adaptive matching, intelligent multi-region optimization and environmental factor compensation. Ink droplet behaviors and environmental data are collected in real time through a high-speed camera and various sensors, a nonlinear model is constructed by using a deep learning technology, and a dynamic parameter optimization curve is generated. According to the method, the printing quality and efficiency are remarkably improved, and the method is suitable for various media and complex scenes.

The invention provides a printing equipment vibration signal acquisition and equipment fault diagnosis method and system, and relates to the technical field of printing machines, and the method comprises the steps: arranging at least two vibration sensors at each key part of printing equipment, and collecting vibration signals of the printing equipment in the operation process; multiple groups of vibration signals reflecting the vibration states of different parts of the printing equipment are obtained; wavelet energy features, wavelet entropy features and wavelet coefficients corresponding to different parts are extracted, and a multi-dimensional vibration feature vector is constructed; performing trend prediction on the vibration feature vector of each key component by using a curve fitting algorithm to obtain a prediction curve reflecting the vibration trend of the key component, and judging whether the prediction curve exceeds a preset fault red line or not; when it is judged that the health state of a certain key component is abnormal, the current vibration feature vector of the component is input into the fault diagnosis model for fault type recognition, and the fault type is determined.

The invention provides a printing machine equipment safety production control method and system, and relates to the technical field of printing machines, and the method comprises the steps: collecting the operation data of a printing machine group through a multi-mode sensor, extracting dynamic characteristics through a time sequence attention mechanism, and constructing a space-time incidence matrix to represent the coupling relation between the printing machines. And constructing a hierarchical deep learning model, integrating feature fusion, time sequence prediction and risk assessment, analyzing the health state of the equipment, calculating an overall safety risk index and identifying fault equipment. And generating an optimal scheduling scheme including an equipment start-stop sequence and a load distribution strategy based on a scheduling decision model of deep reinforcement learning in combination with a safety threshold, resource distribution and production efficiency constraints, and realizing safe and efficient scheduling of the printing machine group. Potential risks can be effectively identified, safety accidents are avoided, and the production efficiency is improved.

The invention provides an ink quality online monitoring method and system based on multi-sensor fusion, and relates to the technical field of printers, and the method comprises the steps: obtaining the temperature, humidity, pH value, viscosity, particle thickness, flow velocity and other data collected by a plurality of sensors in the production process of water-based ink, and employing a multi-sensor data fusion algorithm of adaptive weight, calculating a sensing weight corresponding to the sensor data, and combining the sensor data to obtain fused water-based ink quality characteristic data; establishing a water-based ink quality prediction model by adopting a support vector machine algorithm, and inputting the fused water-based ink quality feature data into the trained water-based ink quality prediction model to obtain a water-based ink quality prediction result; and if the water-based ink quality prediction result does not meet the preset condition, judging that the water-based ink quality is unqualified, sending a feedback signal in a preset format to water-based ink production equipment, and adjusting water-based ink production parameters through a PID controller of the water-based ink production equipment. According to the method, the related parameters of the ink can be monitored and reflected in real time, and the possible problem of artificial false description is solved.

The invention discloses a printing machine equipment operation optimization process and system based on multi-vision analysis, and the method comprises the steps: obtaining multiple groups of image data in a printing process through employing a multi-vision collection scheme in a preset production period; main feature data are obtained through texture and contour feature extraction and a PCA analysis method, the recognition rate of solder paste printing is calculated through the recognition model, the recognition rate is judged, and an acquisition scheme is adjusted. And fusing the multi-image feature set by adopting a DCA feature fusion algorithm to generate a plurality of groups of feature maps, and processing the feature maps through a convolutional neural network to obtain a plurality of groups of fused feature data. And meanwhile, equipment operation parameters are obtained, defect identification is conducted on the fused feature data through the identification model, operation evaluation and optimization are conducted on the real-time equipment operation parameters based on defect information, and the printing quality and the production efficiency are ensured. According to the invention, equipment operation analysis and printing defect evaluation can be effectively carried out from multiple visual features, the intelligence of equipment operation is realized, and the production benefit is improved.

The invention relates to the technical field of artificial intelligence, in particular to a digital printer control system based on artificial intelligence and a control method thereof. The system comprises a data collection simulation unit used for collecting historical printing data, generating ink diffusion simulation data and actual ink diffusion images under different conditions, and establishing a defect database at the same time; the prediction model building unit is used for building a space-time prediction model of ink diffusion, training the space-time prediction model by using ink diffusion simulation data, and finally generating a total loss function; and the feedback optimization unit is used for monitoring the change trend of the total loss function in real time. According to the digital printing machine control system based on artificial intelligence and the control method thereof, the prediction precision and the control effect of printing quality can be improved, fine ink diffusion differences caused by paper adsorbability changes can be effectively captured, and therefore accurate prediction of various defects possibly occurring in the printing process is achieved; the printing efficiency and the product quality are improved.

The utility model relates to the technical field of raw ceramic chip printing, and provides an automatic raw ceramic chip printing machine which comprises a raw ceramic chip feeding device, a screen printing carrying table moving device and a raw ceramic chip discharging device. The raw ceramic chip feeding device comprises a first rack, a material frame conveying and positioning mechanism and a lifting, overturning and grabbing mechanism. The material frame conveying and positioning mechanism comprises a material frame and a servo conveying assembly. The lifting, overturning and grabbing mechanism comprises a first supporting base, a lifting driving assembly, a first grabbing assembly, a second supporting base, an overturning driving assembly, a second grabbing assembly, a third supporting base, a carrying driving assembly and a third grabbing assembly. The screen printing carrying table moving device comprises a second rack, an alignment lifting carrying table, a screen printing guide rail and a screen printing mechanism. The utility model has the advantages that the lifting, overturning and grabbing mechanism automatically takes away raw ceramic chips from the material frame and overturns the raw ceramic chips in a vertical state into the raw ceramic chips in a horizontal state, and the silk-screen printing mechanism prints patterns on the raw ceramic chips and automatically takes away printed matters of the raw ceramic chips, so that the production efficiency is improved.

The utility model relates to the technical field of printing machines, and discloses a digital printing machine dusting assembly which comprises a powder storage tank, a stirring brush and a driving mechanism, a powder spraying head assembly is arranged at the lower end of the powder storage tank, the stirring brush is arranged in the powder storage tank corresponding to the powder spraying head assembly, and the driving mechanism is used for driving the stirring brush to rotate; the powder storage tank is further connected with an air pipe connector, and the air pipe connector is used for being connected with an air source to drive powder to be sprayed out of the powder spraying head assembly. According to the powder scattering assembly of the digital printing machine, the stirring brush corresponding to the powder spraying head assembly is arranged in the powder storage tank, the driving mechanism drives the stirring brush to rotate, in the powder scattering process, the air pipe connector is connected with the air source to drive powder to be sprayed out of the powder spraying head assembly, powder scattering is achieved, and meanwhile the stirring brush sweeps the powder spraying head assembly. The situation that the powder spraying head assembly is blocked in the powder spraying process is avoided, and the product quality is guaranteed.

The invention relates to a paper roll feeding mechanism, a register embossing device and a printing production process of decorative paper, and relates to the field of printing mechanisms, the paper roll feeding mechanism comprises a rack, a frame body, a material separating frame, a material separating paper tube, a first paper tube, a second paper tube, a first driving assembly, a second driving assembly, a mounting assembly and a clutch assembly, the first paper tube is provided with an air expansion shaft in a penetrating mode, the end of the air expansion shaft is detachably and rotationally matched with the supporting seat through an installation assembly, and the first driving assembly is used for driving the air expansion shaft to rotate; the second paper tube is located under the first paper tube, the top of the peripheral face of a paper roll of the second paper tube abuts against the bottom of the peripheral face of the paper roll of the first paper tube, the second paper tube is detachably connected with the frame body through a clutch assembly, the second driving assembly is used for driving the second paper tube to rotate, and the material distributing paper tube is arranged on a material distributing frame. The material distributing paper tube is used for supplying paper to the second paper tube. The supporting stability of the first paper tube can be improved.

The invention provides an accurate printing method of a rotary press, and relates to the technical field of data processing.The method comprises the steps that printing data are obtained, a thickness and tension relation curve is constructed through the gradient fitting principle, and deformation curve data are obtained; based on the mapping relation between the material deformation quantity and the imprinting response, the displacement change of each printing point position is calculated, and an error vector sequence is generated; a roller compensation proportion parameter is generated by combining different roller load structure differences, so that a roller phase reference instruction is adjusted, and a static fine adjustment vector set is obtained; constructing a dynamic adjustment parameter set for roller control synchronous adjustment by combining the transmission characteristics of the roller and servo system parameters, and generating a control scheduling signal flow through a time discrete mode; according to the control scheduling signal flow, the relative position between the rollers is finely adjusted in real time, so that the image-text edge positioning error is kept within a preset tolerance range; the autonomy and accuracy of the printing machine are improved.

The invention discloses a printing machine accessory installation precision detection device and method, and belongs to the technical field of printing machine accessory detection, the printing machine accessory installation precision detection device comprises a working plate, a motor and a material box, the lower surface of the working plate is in threaded connection with a support, the interior of the working plate is fixedly connected with a limiting rod, and the working plate is symmetrically distributed about the center of the limiting rod; the motor is in bolted connection with the outer wall of the working plate on the left side; and the spray head is fixedly connected to the tail end of the inner connecting pipe of the vertical plate. When the printing machine accessory installation precision detection device works, printing machines provided with printing rollers are tidily placed in front of a detection high-definition probe, then a motor is started, when the motor works, an equipment box and the detection high-definition probe are driven to move in the horizontal direction through a threaded rod and a limiting rod, workpieces are detected, and when defective products are detected, the printing rollers are driven to move in the horizontal direction. And marking liquid is sprayed through the spray head to mark the defective products, so that the defective products can be conveniently treated by workers.

The invention provides an automatic cleaning system for a high-precision printing machine, and relates to the technical field of cleaning regulation and control systems. According to the method, the optimal cleaning parameters can be accurately predicted by collecting and preprocessing the historical cleaning data and constructing the parameter prediction model, so that the process of multiple times of trial and adjustment in a traditional cleaning mode is avoided, the cleaning efficiency is greatly improved, and meanwhile, the parameter adjustment model can accurately adjust the cleaning parameters according to the residual amount of the printing ink monitored in real time. According to the method, cleaning parameters are dynamically adjusted, it is ensured that the cleaning effect is always kept in the optimal state, the problem of insufficient cleaning or excessive cleaning is avoided, and then the cleaning strategy is dynamically adjusted according to data monitored in real time to adapt to real-time changes of the working state of the printing machine, so that the flexibility and reliability of the system are enhanced.

The invention provides a curved surface screen printing control method and system and electronic equipment. According to the technical scheme, the corresponding relation between the curved surface rotation angle and the curved surface arc length is obtained according to the pre-obtained corresponding relation between the curved surface rotation angle and the curved surface radius; according to the corresponding relation, the maximum height of the to-be-printed curved surface under different rotation angles is determined, the corresponding curved surface rotation angle is determined by restraining the maximum height value, and then the optimal contact angle of the silk screen and the to-be-printed curved surface is determined; determining the horizontal and vertical coordinates of the corresponding optimal contact point according to the optimal contact angle; according to the horizontal and vertical coordinates, determining a four-axis position relation based on a corresponding relation between a curved surface rotation angle and a curved surface arc length; according to the four-axis position relation, the difference value between the abscissa of the screen and the abscissa of the optimal contact point serves as a constant control quantity, four-axis movement is simulated to obtain a four-axis movement curve, and then four axes of the curved surface screen printing machine are controlled to conduct corresponding movement. According to the method and the device, the problems that the efficiency of an acquisition mode of an existing curved surface silk-screen printing control scheme is low and the printing quality of the obtained curved surface silk-screen printing control scheme is relatively low can be solved.

The utility model relates to the technical field of beverage cup processing, and provides a printing cup automatic packaging and marking device which comprises a controller, a rack, a first conveying mechanism, a second conveying mechanism, a limiting mechanism, a pushing mechanism, a counting sensor, a sealing, cutting and thermal shrinkage all-in-one machine, an air blowing mechanism and a packaging bag printing machine. The limiting mechanism is arranged on the machine frame in a vertically-lifting mode and located between an outlet of the first conveying mechanism and an inlet of the second conveying mechanism, the conveying of the plastic cups is separated according to the packaging number of the plastic cups, and the blowing mechanism is arranged at the front end of a plastic bag packaging groove of the sealing, cutting and thermal shrinkage all-in-one machine and blows air into a plastic bag space for packaging the plastic cups. The first conveying mechanism, the second conveying mechanism, the limiting mechanism, the pushing mechanism, the sealing, cutting and thermal shrinkage all-in-one machine, the blowing mechanism and the packaging bag printing machine are all connected with and controlled by a controller. The small-package plastic cup packaging machine solves the problems that existing small-package plastic cups are slow in packaging speed and low in efficiency.

The utility model discloses a printing ink blocking mechanism for preventing ink splashing, and relates to the technical field of gravure printing machines, including a base, an ink tank fixedly installed on the top of the base, a wedge-shaped mounting block fixedly installed on one side of the ink tank, and a sliding plate slidably installed in the wedge-shaped mounting block. The utility model inserts a spring steel sheet into the sliding plate, and then fixes it by bolts, and then inserts the sliding plate as a whole into the wedge-shaped mounting block, and limits the position by the block, because the spring steel sheet has elasticity, at this time, the upper end of the spring steel sheet contacts the scraper, and when the scraper needs to be adjusted, the spring steel sheet can always contact the lower end of the scraper, and the ink splashed from the ink transfer roller will be blocked by the guide slope of the spring steel sheet, and then flow back into the ink tank through the guide slope, and because the sliding plate is slidably installed on the wedge-shaped mounting block, when the gravure printing machine is stopped, the sliding plate can be slid out as a whole, and then the spring steel sheet can be wiped, and cleaning is also more convenient.

The utility model discloses an anti-blocking spray head of a printing machine, which comprises a spray head shell, a front end cover is arranged at the front end of the spray head shell, a plurality of uniformly distributed spray printing pores are arranged on the front end cover, a rear end cover is arranged at the rear end of the spray head shell, and an ink inlet communicated with an inner cavity of the spray head shell is fixedly arranged on the rear end cover. An ink inlet is formed in the nozzle shell, a first electric control valve is fixedly installed on the ink inlet, a filter plate is arranged in the nozzle shell, an air inlet pipe communicated with a cavity below the filter plate is fixedly installed on one side of the nozzle shell, a second electric control valve is fixedly installed on the air inlet pipe, and a branch pipe communicated with the air inlet pipe is fixedly installed on one side of the air inlet pipe; and a third electric control valve is fixedly installed on the branch pipe, one end of the air inlet pipe is connected with an air pump, a slag discharging opening is fixedly installed on one side of the spray head shell and communicates with a cavity above the filter plate, and a fourth electric control valve is fixedly installed at the slag discharging opening. Blockage clearing can be carried out without disassembly.

The invention discloses a packaging printing machine with a cooling roller, and relates to the technical field of printing machines. The device specifically comprises a device body, the top of the device body is fixedly connected with a fixing frame, and an ink fountain is arranged outside the device body; the printing machine with the cooling roller for packaging further comprises a control mechanism used for blocking the water inlet position and the water outlet position, the control mechanism is fixedly connected to the outer portion of the fixing frame and comprises a sliding plate, a motor box is fixedly connected to the outer portion of the sliding plate, a first telescopic rod is fixedly connected to the interior of the motor box, and a second telescopic rod is fixedly connected to the outer portion of the motor box. A first adjusting rod and a second adjusting rod are fixedly connected to the exterior of the first telescopic rod, a second fixing box is fixedly connected to the bottom of the second adjusting rod, and the sliding plate is slidably connected to the interior of the fixing frame. And the clamping mechanism is fixedly connected to the interior of the second fixing box, and the purpose of improving the use efficiency of equipment is achieved through the printing machine with the cooling roller for packaging.

The present invention discloses a paper conveying device and a printing press to solve the technical problem that the existing printing roller is not conducive to inkjet printing. The present invention includes a sprocket, a chain, a narrow flat plate, and a paper conveying chain row. The chain is arranged as two parallel chains, each chain is connected in an annular manner, the sprocket is arranged in two groups, the sprocket and the chain are meshed and the chain is tensioned into an ellipse, the chain includes an extended chain pin, the paper conveying chain row is provided with a paper biting assembly, the narrow flat plate and the paper conveying chain row are fixedly connected by the extended chain pin and the chain, a plurality of narrow flat plates are arranged in parallel, the paper conveying chain row and its adjacent plurality of narrow flat plates constitute a printing mechanism, a plurality of printing mechanisms are arranged along the chain, and in the upper straight line section of the chain ellipse, the paper conveying chain row and the adjacent plurality of narrow flat plates are spliced ​​to form a large plane facing upward, which can be used as a working plane for inkjet printing. The beneficial technical effects of the present invention are: fast transmission speed, high precision, conducive to inkjet printing and combined use with conventional printing presses.

The invention is suitable for the technical field of printing machine equipment, and provides a paper conveying device of a digital printing machine. Comprising an adsorption conveying part, a lifting part, a horizontal conveying part and a storage moving trolley. The adsorption conveying component is fixedly installed on the lifting component, the lifting component is used for driving the storage and loading moving trolley to be lifted, the storage and loading moving trolley is used for storing and loading paper to be conveyed, and the adsorption conveying component is used for adsorbing and conveying the paper on the storage and loading moving trolley to the horizontal conveying component. The horizontal conveying part is used for horizontally conveying paper to digital printing. The ascending shaking mechanism is arranged on the air cylinder assembly close to the air nozzle, so that paper can be driven to shake in the adsorption ascending process, meanwhile, under the cooperation of the air nozzle, paper adhesion is avoided, it is guaranteed that only one piece of paper is conveyed each time, and conveying is more accurate.

The utility model discloses a screen printing machine glue scraping mechanism which comprises an installation plate, a first side supporting plate, a second side supporting plate, a rotating plate, scraping plates, a limiting block, a limiting clamping plate, an air cylinder and a clamping piece. The rotating plate can be driven by a motor to rotate, and therefore the scraping plates on the upper end face and the lower end face of the rotating plate can be continuously switched; according to the invention, a single scraper is prevented from being heated and softened after being continuously contacted and rubbed with a silk screen, the influence on the printing quality after the printing pressure is reduced is avoided, the heat dissipation of the scraper is also facilitated in the rotating process of the scraper, the limiting block is a square limiting block with the periphery in smooth transition, the limiting clamping plate is a clamping plate with a U-shaped section, and the limiting block is clamped on the limiting clamping plate; by arranging the limiting block and the limiting clamping plate, the motor can drive the rotating plate to rotate by 90 degrees at a time, so that the scraping plates on the upper end face and the lower end face of the rotating plate are conveniently positioned, converted and adjusted, the clamping piece is driven by the air cylinder to descend to clamp the scraping plates, and the stability of the scraping plates and the reliability of the device can be improved when the device does reciprocating glue scraping motion.

The utility model relates to printing equipment with a multi-mode switching structure, a printing unit at least comprises two unit units, the printing unit is arranged between a front mechanism and a rear mechanism, and the front mechanism comprises a front traction device and a front floating device; the rear mechanism comprises a rear traction device and a rear floating device; the rear traction device is connected with the centralized curing mechanism; each unit comprises a working module, and each working module comprises a printing mechanism, a unit curing mechanism and a unit floating mechanism; a unit floating seat of the unit floating mechanism is provided with a unit front floating roller and a unit rear floating roller, and each unit unit further comprises a unit front traction device and a unit rear traction device. According to the multi-mode switching structure, all matching structures are reserved in the structure of the multi-mode switching structure, printed materials can be fed and wound in different paths according to different requirements, different printing modes can be switched and selected, and the different modes have the structure capable of being shared, so that the printing equipment with the multi-mode switching structure is relatively compact, and the effect that one machine has multiple purposes is achieved.

The label printing equipment with the novel unwinding mechanism comprises a label printing machine body and a winding shaft, the bottom end of the front face of the label printing machine body is fixedly connected with a front frame, the tops of the two sides of the inner wall of the front frame are both rotationally connected with installation heads through bearings, and the surfaces of the two installation heads are both provided with installation blocks in a clamped mode. The two mounting blocks are fixedly connected to the two ends of the winding shaft correspondingly, threads are formed in the two sides of the surface of the winding shaft, the surfaces of the threads are sleeved with limiting discs in a threaded mode, a label paper roll is wound around the middle of the winding shaft, a tape inlet is formed in the bottom of the front face of the label printing machine body, and a photoelectric switch is fixedly installed at the top end of the tape inlet. According to the label printing equipment with the novel unwinding mechanism, used-up label paper rolls can be rapidly replaced, the downtime in production is shortened, the working efficiency is improved, the label paper rolls with different widths can be limited and prevented from deviation, and a label paper use-up or breakage reminding structure is arranged.

The invention provides an environmental protection evaluation method and system based on operation parameters of an integrated printer, and relates to the technical field of green printing, and the method comprises the steps: inputting the operation parameters of the integrated printer into a neural network algorithm, calculating environmental protection index scores of VOCs, wastewater, energy consumption, solid waste and the like, and generating a printing technology optimization suggestion based on the environmental protection index scores. And the self-adaptive fuzzy PID control algorithm is adopted to automatically adjust the operation parameters, and it is ensured that the environmental protection index score reaches the preset threshold value, so that environmental protection optimization of the printing process is achieved, the resource utilization efficiency is improved, and environmental pollution is reduced.

The invention relates to the technical field of printing machines, in particular to a printing platform and a printing machine.The printing platform comprises a horizontal moving sliding table, a folding transposition area and a printing area are arranged on the horizontal moving sliding table, and a folding mounting base is mounted at the movable end of the horizontal moving sliding table and composed of a fixed mounting base and a turnover mounting base; a turnover buffer mechanism is mounted between the fixed mounting seat and the turnover mounting seat, a fixed adsorption placement plate is mounted on the fixed mounting seat, a movable adsorption placement plate is mounted on the turnover mounting seat, the movable adsorption placement plate and the fixed adsorption placement plate are both used for limiting and adsorbing printing paper, and two sets of guiding and correcting devices are arranged on the two sides of the horizontal moving sliding table. According to the printing equipment, the printing cost is effectively reduced, and meanwhile, the printing efficiency is ensured.

The utility model discloses a doctor blade holder of a photogravure press, belongs to the technical field of doctor blade installation, and solves the problem that an existing doctor blade holder is poor in clamping effect. The doctor blade clamp comprises an installation bottom plate, a clamping plate is arranged above the installation bottom plate, a plurality of locking bolts are arranged between the clamping plate and the installation bottom plate, an installation groove used for containing a doctor blade is formed in the upper end face of the installation bottom plate, and a positioning plate used for limiting is arranged on the lower portion of the installation bottom plate. A fine adjustment device used for adjusting the pressure of the ink scraping blade on the roller is arranged on one side of the installation bottom plate and one side of the clamping plate, and collecting devices used for collecting ink are arranged on the installation bottom plate and the positioning plate. The doctor blade clamp of the photogravure press can effectively clamp a doctor blade, improves the ink scraping effect, is convenient to mount and dismount, and has the advantages of being convenient to use and high in practicability.

The utility model discloses a screen printing machine, and aims to directly control rotation of an abutting piece 7 through a driving assembly so as to improve operation convenience of a user, and the screen printing machine is more convenient compared with an existing machine which needs to repeatedly loosen and tighten a plurality of fixing bolts. According to the technical scheme, the screen printing machine is characterized by comprising a base, a machine base, a printing mechanism, a screen printing plate and an assembling frame plate, the assembling frame plate is provided with a slot for embedding the screen printing plate, an abutting piece is rotationally arranged in the assembling frame plate so that the abutting piece can be embedded into the slot when the abutting piece is rotated, the abutting piece is in transmission connection with a driving assembly, and the driving assembly drives the screen printing plate to rotate. And one end of the driving assembly extends to the outer side of the assembling frame plate. According to the utility model, the rotation of the abutting piece is directly controlled through the driving assembly, so that the operation convenience of a user is improved, and the operation is more convenient compared with the prior art that a plurality of fixing bolts need to be repeatedly tightened.

The invention relates to the technical field of corrugated paper production, one embodiment of the invention provides a dust removal device for corrugated paper production, the dust removal device comprises a rack, and further comprises a conveying belt, a dust collection box, a brush and a cutting knife, the conveying belt is arranged in the rack through a transmission mechanism, a plurality of through holes are formed in the conveying belt, and the dust collection box is arranged on the conveying belt; the dust collection box is arranged in the rack through the dust collection mechanism, the top end of the dust collection box makes contact with the inner wall of the conveying belt, double-face dust removal can be conducted on corrugated boards, the brush is arranged at the top end of the rack through the rotating mechanism and used for driving the brush to brush off dust on the surfaces of the corrugated boards, and the cutting knife is arranged at the top end of the rack through the cutting mechanism. According to the technical scheme, the corrugated board cutting device is used for solving the technical problems that in the prior art, dust removal is conducted on corrugated boards through a brush before the corrugated boards enter a printing machine, impurities and dust which are firmly attached are difficult to clean through the dust removal mode, and the dust removal efficiency of the corrugated boards is reduced.

The utility model relates to the field of printing machines, and discloses a printing machine automatic plate changing device which comprises a fixing frame, a printing roller and a roller frame, one side of the fixing frame is fixedly connected with a meter counter host, the other side of the fixing frame is fixedly connected with a motor, and one side of the motor and the inner side wall of the fixing frame are both connected with fixing rods. A positioning bolt is movably installed at one end of each fixing rod, a roller frame is movably installed on the side, close to each other, of each fixing rod, a meter counting sensor is fixedly connected to one side of each roller frame, a printing roller is connected to one side of each meter counting sensor, connecting rods are fixedly connected to the two sides of each printing roller, and the connecting rods are embedded into the fixing rods. Through cooperative use of the motor, the meter counting sensor, the roller frame and the printing roller, automatic and rapid plate changing can be achieved according to the set printing length, manual operation of workers is not needed, manpower and time are saved, and the working efficiency is improved.

The invention discloses a printing machine accessory laser detection device, and relates to the technical field of printing machine accessory production, the printing machine accessory laser detection device comprises a tool substrate and a laser detection assembly, the laser detection assembly is arranged below the tool substrate, and the laser detection assembly comprises an air cylinder fixed to the back end of the tool substrate through a bolt; a connecting plate is fixedly connected to the telescopic end of the air cylinder, a lifting rod is fixedly connected to the bottom of the tail end of the connecting plate, gear rings are fixed to the middle of the lifting rod in the radial direction at equal intervals, and a prism is fixedly installed at the tail end of the lifting rod. According to the non-contact measurement scheme based on the laser displacement sensor, the laser displacement sensor is responsible for measuring the position of the inner wall of the roller, the prism is used for changing the direction of the laser, the upper computer software is responsible for data processing and display, and compared with a traditional laser coaxial displacement meter, the laser displacement sensor is lower in cost and more accurate in measurement. Physical contact with the inner wall of the roller is not needed in the whole measurement process, and contact damage is avoided.

The invention discloses a precise-positioning assembly robot for curved surface offset printing press manufacturing, and relates to the technical field of curved surface offset printing press manufacturing, the precise-positioning assembly robot comprises a stabilizing frame and a guiding frame, two sets of built-in grooves are formed in the stabilizing frame, and second stretching arms are slidably mounted in the built-in grooves; a first stretching arm is arranged in the other set of built-in grooves in a sliding mode, and a driving assembly used for assisting the first stretching arm and the second stretching arm to move alternately is installed on the outer side of the stabilizing frame. According to the accurate-positioning assembly robot for manufacturing of the curved-surface offset printing machine, through the design of the protection assembly and the fixing assembly, a curved-surface offset printing piece placed between two sets of positioning plates can be limited advantageously, and stable feeding and discharging treatment on the curved-surface offset printing machine can be facilitated; and when the air bag is used for limiting from the two sides of the curved-surface offset printing piece, the clamping force on the curved-surface offset printing piece can be judged according to the pressure value of the pressure sensor.