269results about How to "Guaranteed printing quality" patented technology

The invention discloses a screen printing plate which comprises a metal layer and a composite layer. The metal layer comprises a long-strip-shaped printing pattern, connecting bridges are arranged on the printing pattern in the length direction at intervals, and a hollow part penetrating through the metal layer is arranged between every two adjacent connecting bridges. The composite layer is compounded on the metal layer, the composite layer comprises a long-strip-shaped printing channel corresponding to the printing pattern, the printing channel penetrates through the composite layer and is communicated with the hollow part, and the connecting bridge is suspended in the printing channel; and the connecting bridge is provided with a material storage part towards the printing channel. The screen printing plate has the advantages of being good in inking performance, good in inking quality and not prone to line breakage, and the printing quality is guaranteed.

The invention provides a photocuring 3D printing intelligent slicing optimization method based on artificial intelligence, and relates to the technical field of photocuring 3D printing.The method comprises the steps that a target model summary file is generated by collecting a 3D printing model file and printing parameter data; performing slicing processing on model data in the target model summary file to generate model slicing data; analyzing the geometric complexity of the model by using a deep convolutional neural network, and dynamically adjusting the thickness of a slice layer based on a complexity coefficient; through multi-objective optimization of printing quality, time and material consumption, printing setting is dynamically adjusted according to an optimization result; and the printing state is monitored in real time, slice parameters are adjusted according to monitoring data, an optimization result is verified before actual printing, and slices are adjusted and optimized according to a verification result. The 3D printing model file and the printing parameter data input by the user can be automatically analyzed, the printing process is monitored in real time, the slicing parameters are dynamically adjusted, and the printing quality and efficiency are improved.

The embodiment of the invention relates to the technical field of 3D printing, and discloses a material extrusion device and a 3D printer, the material extrusion device comprises a first extrusion mechanism and at least two second extrusion mechanisms; the first extrusion mechanism comprises a first charging barrel, a first motor and a first screw, the first motor is arranged at one end of the first charging barrel, a nozzle is arranged at the other end of the first charging barrel, the first screw is arranged in the first charging barrel, and one end of the first screw is connected with the first motor; each second extrusion mechanism comprises a second charging barrel, a storage bin, a second motor, a second screw rod and a feeding bin, the two ends of the second charging barrel communicate with the first charging barrel and the storage bin correspondingly, the storage bin is provided with the second motor and further communicates with the feeding bin, the second screw rod is arranged in the second charging barrel, and the second screw rod is arranged in the second charging barrel. And one end of the second screw rod penetrates through the storage bin and is connected with a second motor. By means of the mode, mixing and extrusion of at least two materials are achieved, and the 3D printer achieves mixed printing of multiple materials of the same product.

The utility model discloses a printing roller pasting material detection device, relates to the technical field of printing equipment, and mainly relates to a first sliding rail, two moving parts slidably connected to the first sliding rail, detection cameras fixed to the moving parts and distance measuring sensors arranged at the two ends of the first sliding rail. The distance measuring sensor is used for measuring the sliding distance of the detection cameras on the first sliding rail, each detection camera correspondingly irradiates a cross curve on one side of the pasting material, the detection cameras are connected with a display screen for observing images, and the distance measured by the distance measuring sensor is displayed on the display screen. The method and the device have the effect of high positioning detection precision during mounting of the attached material.

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 invention discloses a method for dynamically adjusting the printing speed. The method comprises the steps that a three-dimensional model file is obtained and then preprocessed, and an initial printing parameter set is defined; performing hierarchical processing on the model by using the parameter set and generating path information; setting a speed factor of a corresponding layer based on the complexity, and calculating an actual printing speed in combination with the initial printing speed; using the calculated actual printing speed as the execution speed of the current layer; in the printing process, the state is monitored, and the printing time and quality feedback of each layer are recorded; dynamically adjusting a speed factor according to the collected data so as to optimize the printing speed of a subsequent layer; and the updated speed factor is applied to the new layer printing preparation, and circulation execution is carried out until model printing is completed. According to the method, the printing speed is automatically adjusted according to the geometrical characteristics of each layer, the printing efficiency is improved, the printing quality is guaranteed, the method is particularly suitable for printing tasks of complex geometrical structures, and the 3D printing process is more intelligent and efficient.

The utility model relates to the technical field of series printing, and discloses a solder paste series printing device which comprises a first printing machine, a first solder paste brushing table is arranged in the first printing machine, a second printing machine is arranged on the right side of the first printing machine, and a second solder paste brushing table is arranged in the second printing machine. And tinning mechanisms are arranged in the first solder paste brushing table and the second solder paste brushing table. According to the tin paste series printing device, through the arranged tinning mechanism, after a first printing machine completes tinning treatment on an A-face jointed board, a second printing machine completes tinning treatment on a B-face jointed board through a three-dimensional steel mesh, a shielding cover and a stepped scraper; the second printing machine does not affect solder paste on the top of the A-side jointed board when tinning treatment is conducted on the B-side jointed board, the first printing machine and the second printing machine are used in series, the solder paste printing quality can be guaranteed, and the production efficiency is improved.

The invention relates to the technical field of 3D printing, in particular to a Z-axis zeroing method and 3D printing equipment. The Z-axis zeroing method comprises the steps that a printing head and a printing platform are controlled to get close, and when the printing head makes contact with the printing platform, approaching operation is stopped; the printing head and the printing platform are controlled to be far away, and when the printing head and the printing platform are separated, far-away operation is stopped. Through a pre-pressing lifting mechanism that the printing head and the printing platform firstly abut against each other and then are separated from each other, deformation errors caused by tiny deformation of abutting contact of the printing head and the printing platform can be eliminated, Z-axis high-precision self-adaptive zeroing is achieved, and due to the fact that the deformation errors caused by contact deformation of the printing head and the printing platform are eliminated, the self-adaptive zeroing efficiency is improved. Therefore, the accuracy of the Z-axis return-to-zero position is improved, the printing quality of the first layer during printing can be ensured, the printing effect of the subsequent layers is also effectively guaranteed, and the precision, efficiency and quality of 3D printing are improved.

The utility model discloses a 3D printing head structure for ceramic products, and aims to overcome the defects that the discharging stability of a 3D printing head is poor, and the printing quality is affected. A material extrusion screw is installed in the printing cylinder, a feeding nozzle is arranged on the side wall of the printing cylinder, an extrusion nozzle is arranged at the lower end of the printing cylinder, the feeding nozzle is connected with an extrusion cylinder through a pipeline, and an extrusion piston is installed in the extrusion cylinder. Due to the double extrusion effect of the extrusion piston and the extrusion screw, printing materials can be stably and reliably extruded, the blocking phenomenon is avoided, and the printing quality of ceramic products can be guaranteed.

The invention discloses a preparation method of a printing material for three-dimensional printing, the printing material is formed by mixing a new printing material, a first printing material and a second printing material, the new printing material is a printing material which is not used, the first printing material is a printing material which is not used and is not adhered to a three-dimensional printing piece, and the second printing material is a printing material which is not adhered to the three-dimensional printing piece. The second printing material is a printing material which has been used, is adhered to the three-dimensional printing piece, is removed from the three-dimensional printing piece and is not mixed with other solid particles. By adopting the technical scheme, compared with the prior art, the old powder can be utilized more sufficiently or more reasonably.

The utility model discloses a 3D printing efficient heat dissipation mechanism and a 3D printer, the 3D printing efficient heat dissipation mechanism comprises an effector shell, the effector shell comprises an upper shell and a lower shell, the upper shell is provided with an air guide pipe, and the lower shell is provided with an air distribution device; an air inlet is formed in the upper end of the air guide pipe and connected with an external air supply device through an air supply pipeline. An air outlet is formed in the lower end of the air guide pipe; the air distribution device comprises an air duct, the air duct is connected with an air outlet of the air guide pipe, and the air duct is provided with a first exhaust structure for dissipating heat of the nozzles. According to the utility model, air is supplied to the air guide pipe through the external air supply device, and the air is conveyed to the air duct of the air distribution device by the air guide pipe and is exhausted from the air exhaust structure, so that the air quantity and the air speed of an actual acting part can be increased, the heat dissipation efficiency of the 3D printer during printing is ensured, the overall weight of the effector is reduced, and the occupied space is small.

The invention relates to the technical field of square-bottom valve bag printing, in particular to a square-bottom valve bag printing position correcting and deviation rectifying device which comprises a machining shell, and a positioning and deviation rectifying mechanism used for supporting and limiting square-bottom valve bags of different models is arranged in the machining shell. A waste gas purifying mechanism used for absorbing printing ink printing waste gas is arranged on the side face of the machining shell, a printing auxiliary mechanism used for removing dust on the surface of the pocket body is arranged at the upper end of the machining shell, and the positioning deviation correcting mechanism comprises a lifting column movably installed in the machining shell. According to the pocket printing device, by arranging the positioning deviation correcting mechanism and utilizing mutual cooperation between a sliding protruding block and a telescopic protruding block, before printing processing, the inner side of a pocket body can be supported and limited, wrinkles or position deviation of the pocket body in the printing process is prevented, the front side and the rear side of the pocket body can be separated, and the printing quality is improved. And ink on one side is prevented from contaminating the other side in the printing process, and the printing quality can be effectively guaranteed.

The invention relates to a medical high polymer material 3D intelligent printing method based on a selective laser sintering process. The method comprises the following steps that optimal initial process parameters are recommended based on material characteristics and part requirements; carrying out processing according to the optimal initial process parameters, and monitoring a processing material in real time through a sensor; if machining defects are monitored, an AI model is adopted to calculate and adjust technological parameters, and meanwhile, local repair is carried out on the detected defects; after printing of each layer is completed, the technological parameter database is updated, and technological parameters of subsequent layers are optimized until the machining process is finished; in the printing process, once defects are monitored, the AI model can quickly calculate and adjust process parameters, manual intervention is not needed, and the time for finding and solving problems is greatly shortened; meanwhile, the reinforcement learning algorithm can continuously learn and optimize a process parameter adjustment strategy, so that adjustment is more accurate and efficient, and repeated printing and repair time caused by unreasonable parameters are reduced.

The invention relates to a split type electrofluid sprayer, a jet printing device and an ink-jet printing system, and the split type electrofluid sprayer comprises a main body part which is provided with a connecting hole in one end face; the liquid supply assembly comprises a liquid supply sleeve, and the liquid supply sleeve is matched with the main body part in an inserted mode; the needle body part is inserted and matched with one end, deviating from the main body part, of the liquid supply sleeve; the electrode assembly comprises an electrode holder and an electrode wire, the electrode holder comprises a fixed section and an abutting section, the fixed section is inserted into the end, extending to the connecting hole, of the liquid supply sleeve, so that the electrode holder and the liquid supply sleeve are in insertion fit, the abutting section is located in the connecting hole and abuts against the end face of the liquid supply sleeve, and the electrode wire penetrates into the needle body part. The main body part, the needle body part, the liquid supply assembly and the electrode assembly are designed in a split mode, and when the four parts are assembled, the relative positions of the four parts are ensured to be consistent through cooperation of an inserting mode and the like, the needle body part can be conveniently and independently replaced, after the needle body part is replaced, the relative positions of the needle body part and the electrode assembly can still be kept unchanged, and the printing quality is ensured.

The invention belongs to the technical field of digital printing, and particularly relates to a coating ink printing scheme. According to the coating ink printing scheme provided by the invention, first ink and second ink are filled in a multi-nozzle ink-jet printer, and the first ink and the second ink are sequentially sprayed on a transfer printing medium along with the operation of the printer; the first ink comprises a water-based nano polyurethane emulsion; the second ink is transparent ink, and the transparent ink comprises a water-based hot-melt nano polyurethane emulsion; the water-based hot-melt nano polyurethane emulsion accounts for 60-70% of the total mass of the transparent ink; the elongation rate of the water-based nano polyurethane in the water-based nano polyurethane emulsion is 180 to 600 percent; and the elongation percentage of the water-based hot melt type nano polyurethane is 1500 to 1800 percent. According to the printing scheme, rapid printing can be achieved, the pattern transferred to the fabric is complete, operation is easy, the fabric is tightly attached to the first ink (the printed colored pattern), and the pattern does not deform or fall off or is not prone to fading due to rubbing on the fabric.

The invention discloses a nozzle chromatography detection image printing method, a calibration value obtaining method, a calibration value obtaining device and equipment, and relates to the technical field of ink-jet printing. According to the method, the first detection image and the second detection image are obtained and printed to obtain the third detection image used for nozzle chromatography calibration, and the nozzle chromatography offset information can be rapidly, simply and accurately obtained by using the position of the calibration part in the third detection image. Even if abnormal conditions such as unstable printing speed and paper feeding speed, printing medium deformation, unstable grating or coded disc signals and the like occur, the color register calibration value can be accurately obtained, and technical personnel can be assisted in judging whether the abnormal conditions occur in the printing equipment or not, so that equipment calibration or correction is carried out in time, and the printing efficiency is improved. And image printing quality is ensured.

The invention relates to the technical field of photovoltaic glass processing screen printing, and discloses a photovoltaic glass automatic screen printing machine capable of continuous operation, which comprises a conveying table, a bracket is fixedly connected to the outer side of the middle of the conveying table, a transverse driving rail is mounted on the bracket, and a moving frame is mounted on the outer side of the transverse driving rail; and a liquid storage tank is installed at the top of the moving frame, and two linear driving rails are installed on the two sides of the bottom of the moving frame correspondingly. According to the device, the adjusting pieces can move relatively, so that coatings in redundant spaces on the two sides of the upper surface of the screen printing net can be pushed to the middle to be fully utilized and prevented from being accumulated and deposited on the two sides, and therefore the device is provided with the imprinting pieces, has the flexible width adjusting and adapting effect, adapts to different glass printing operations and is flexible, convenient and fast to use. And redundant coatings on the two sides of the silk screen surface are pushed and concentrated in real time, so that the redundant coatings are fully used, deposition and hardening are avoided, and the continuous silk screen effect is effectively guaranteed.

The invention relates to the technical field of textile, and discloses a double-sided textile printing turnover device for sock production, which comprises a first box body, a feeding port and a discharging port are formed in the first box body, cloth is inserted into the feeding port, a top plate is clamped at the top of the first box body, and the top plate is connected with the discharging port. A drying device is fixedly connected into the first box body, a driving shaft and a driven shaft are rotatably connected into the first box body, a conveying belt and a tensioning mechanism are rotatably connected to the outer surface of the driving shaft, a printing mechanism is rotatably connected to the outer surface of the driven shaft, and a limiting mechanism is slidably connected into the first box body. A conveyor belt overturning mode is set to cooperate with a tensioning mechanism and a limiting mechanism, the conveyor belt overturning guarantees the basic quality of duplex printing through a double-layer structure and the like, the tensioning mechanism accurately regulates and controls tension according to related parts to prevent the tension from affecting printing, and the limiting mechanism monitors and limits the cloth position to improve the product quality.

The utility model relates to the technical field of 3D (three-dimensional) printers, and discloses a material adding device for a 3D printer, which comprises a support, a motor mounted on the support, a turntable mounted on an output rotating shaft of the motor and at least two abutting plates fixedly connected with a rotating shaft, one end of the rotating shaft is rotatably connected onto the turntable, and the other end of the rotating shaft is rotatably connected onto the rotating shaft. Symmetrical sliding grooves are formed in the abutting plate, a sliding block and a control pipe are connected into each sliding groove in a sliding mode, the control pipe is fixedly connected to the support, a pushing assembly used for pushing the sliding blocks to move in the sliding grooves is arranged on the control pipe, the sliding blocks move in the sliding grooves through the pushing assembly, then the sliding blocks abut against the inner wall of the material roller, and therefore the material roller can be fixed to the inner wall of the material roller. The material roller and the control pipe are coaxially fixed, the material roller can drive the rotating shaft to rotate on the rotating disc through the abutting plate, consumables on the material roller and the rotating shaft can coaxially rotate for discharging, the situation of eccentric discharging of the material roller is avoided, the material roller can conduct uniform discharging, and the printing quality of the printer is guaranteed.

The present invention provides a three-dimensional molding wire material and a preparation method thereof, a three-dimensional printer and a three-dimensional molding method. The three-dimensional molding wire material of the present invention comprises a core wire and a wrapping layer wrapped outside the core wire, the core wire comprises metal powder, a binder, a dispersant and a flexibility enhancer, and the weight percentage of the metal powder in the core wire is more than 60%. The three-dimensional printer of the present invention comprises a wire material tray, a cleaning mechanism and a print head, the wire material tray is wound with the three-dimensional molding wire material, the cleaning mechanism is used to remove the wrapping layer of the three-dimensional molding wire material, one end of the core wire of the three-dimensional molding wire material is transmitted to the print head, and the print head is provided with a heating device, and the heating device is used to heat the core wire in the print head. The three-dimensional molding wire material of the present invention has good flexibility and can be kept dry, and the three-dimensional printer of the present invention is provided with a cleaning mechanism for removing the wrapping layer of the three-dimensional molding wire material, so that the wrapping layer does not participate in printing into the molding object, aiming to improve the quality of FDM metal three-dimensional printing.

The invention discloses an FDM bottom plate mounting structure of a 3D printing device, and belongs to the technical field of 3D printing equipment. The FDM bottom plate mounting structure of the 3D printing device comprises a machine box, a base plate and a circular FDM bottom plate, the base plate and the FDM bottom plate are both located in the machine box, the base plate is provided with a target area used for containing the FDM bottom plate, the FDM bottom plate mounting structure of the 3D printing device further comprises a limiting mechanism, and the limiting mechanism comprises a plurality of supporting plates, a plurality of connecting rods and a traction piece; the multiple supporting plates are arranged around the center of the target area, all the supporting plates are rotationally connected to the base plate, the upper surfaces of the multiple supporting plates are located on the same horizontal plane, and all the supporting plates rotate at the same time. According to the FDM bottom plate mounting structure of the 3D printing device, the problem that an existing mode of adjusting the levelness of the FDM bottom plate through pre-tightening force of bolts causes deformation and inclination of the FDM bottom plate is solved, and the printing quality of 3D products is further guaranteed.

The utility model discloses a printing device with a three-dimensional multi-surface printing function, which comprises an operating platform, a plurality of fixed rods arranged on the operating platform, a top plate arranged at the end parts of the fixed rods, a movable plate arranged on the fixed rods in a sliding manner, a mounting frame arranged on the movable plate, a printing net arranged in the mounting frame, a driving mechanism arranged on the top plate, and a transverse plate arranged on the movable plate, the output end of the second electric push rod is connected with a mounting plate; a mounting rack is mounted below the mounting plate; a mounting rod is arranged in the mounting rack; an extrusion roller is rotationally arranged on the mounting rod; the two sides of the box body are printed at the same time, time is greatly saved through the design, printing efficiency is improved, operation errors possibly caused by overturning of the box body are reduced, and stability of printing quality is further guaranteed.

The utility model relates to the technical field of printing devices, and discloses a printing device which comprises a machine frame and roller frames fixed on the machine frame, a smearing roller, a printing roller and a clamping compression roller are arranged between the roller frames in a rotating mode, and a dye disc containing dye is further fixed on the machine frame. The lower side of the smearing roller makes contact with dye in the dye disc and makes contact with the printing roller in a rotating and attaching mode at the same time, a protruding floral pattern structure is arranged on the surface of the printing roller and used for pressing the smeared colored dye on fabric, and in addition, symmetrical sliding plates are fixedly arranged in the roller frame. Due to the fact that the embossing position is located above the embossing roller, the phenomenon that dye drips in a concentrated mode is avoided, the thickness of the sponge liquid absorption sleeve is smaller than that of the embossing protruding structures, hydrophobic paint is sprayed on the side walls of the embossing protruding structures, redundant dye drips downwards under the action of gravity in the rolling process of the embossing roller, and the embossing effect is improved. The patterns cannot be printed on the fabric, so that the clearness of the patterns is ensured.

The present invention belongs to the field of printing technology, solves the technical problem of poor leveling effect in existing printing equipment, and provides a printing equipment. The printing equipment includes: a printing platform for carrying and transmitting printing media; a printing device, the printing device is arranged above the printing platform, and is used to spray fluid onto the surface of the printing medium; a circulating storage device, which is used to receive the printing medium that has been sprayed with fluid and cache the printing medium for a preset time. The printing equipment of the present invention does not need to set up an overly long transmission mechanism to transmit the printing medium, and leveling is performed on the circulating storage device, so that the leveling effect of the pattern on the printing medium is good, thereby ensuring the printing quality, and has the advantages of good leveling effect and good printing effect.

The utility model discloses a conveying mechanism of an ink writer, which relates to the field of packaging bag processing and comprises a fixed connecting bottom plate, and one end of the fixed connecting bottom plate is provided with a first conveying structure used for supporting and conveying packaging bags. A second conveying structure used for supporting and conveying the packaging bags is installed at the other end of the fixedly-connected bottom plate, and a movable supporting structure used for supporting and transitioning the packaging bags is arranged between the first conveying structure and the second conveying structure. The conveying mechanism is simple in design structure and convenient to operate, and most importantly, the tightness degree during packaging bag conveying can be adjusted, so that letters can be well printed on the packaging bags through a lettering machine, and the lettering quality is guaranteed.

The invention relates to the technical field of RFID label paper printing, and particularly discloses an RFID label printing method based on a thermal transfer printer, which comprises the following steps of: installing an RFID label reader-writer on a paper transmission path in the printer; obtaining paper data, obtaining an accurate positioning signal, obtaining a printing distance value of the RFID tag paper based on the accurate positioning signal, and calculating to obtain a printing power value; based on the printing power value and the printing quality expression qualified value, a printing speed value is obtained through calculation of a printing quality expression model; the RFID tag paper is printed, and after printing is completed, the printing completion quality performance value of the RFID tag paper is calculated; according to the RFID label paper printing method, the RFID label paper is compared with the printing quality performance qualified value, the printing performance qualified signal is obtained, it is guaranteed that qualified RFID label paper can be stably obtained in the subsequent printing process, the printing efficiency of the RFID label paper is improved, and the printing quality of the RFID label paper is guaranteed.

The present application discloses a printing control method and device for a digital direct-injection printing machine, the method comprising: in response to a printing instruction, receiving a textile image fed back by a visual sensor pre-installed on the digital direct-injection printing machine; identifying a to-be-printed area in the textile image; determining a target segmentation area corresponding to the to-be-printed area from a pre-designed to-be-printed image; obtaining corresponding target area jetting parameters from a pre-constructed mapping relationship between the regional center pixel position and the regional jetting parameters according to the regional center pixel position of the target segmentation area; controlling the digital direct-injection printing machine to print the to-be-printed area according to the jetting speed and ink droplet size indicated by the target area jetting parameters, and continuing to perform the step of receiving the textile image fed back by the visual sensor pre-installed on the digital direct-injection printing machine. Therefore, by adopting the embodiment of the present application, the printing quality can be guaranteed while improving the production efficiency.

The application discloses a body structure and a printer. The body structure comprises a casing and a printing assembly. The mounting cavity of the casing has a first bottom wall surface and a support surface arranged at intervals in the thickness direction of the body. The printing assembly comprises a print head located in the mounting cavity. The lower edge of the printing area is located between the first bottom wall surface and the support surface or is lower than the first bottom wall surface. The consumable box can be supported on the support surface, and the bottom surface thereof is located between the support surface and the first bottom wall surface or is flush with the support surface. That is, part of the consumable box is accommodated in the space between the support surface and the first bottom wall surface, so that the body structure can be adapted to consumable boxes with different thickness sizes, and the versatility of the body structure is improved. The body structure of the application also ensures that the printing paper is always located in the printing area in the thickness direction of the body, avoids offset printing or empty printing, and guarantees the printing quality.

The invention relates to the technical field of screen printing steel mesh cleaning, and discloses a cleaning device and method for a screen printing steel mesh. The cleaning device comprises a bottom plate, the upper surface of the bottom plate is fixedly connected with a side plate, the upper surface of the bottom plate is fixedly connected with a baffle, and the upper surface of the baffle is fixedly connected with a hydraulic press; the outer wall of the hydraulic press is fixedly connected with a supporting shell, the output end of the hydraulic press is fixedly connected with a connecting block, the outer wall of the connecting block is fixedly connected with a first connecting shaft, the outer wall of the first connecting shaft is rotationally connected with a connecting piece, and the outer wall of the connecting piece is rotationally connected with a clamping jaw. The hydraulic press drives the connecting block to move, the connecting block drives the first connecting shaft to move, the first connecting shaft enables the connecting piece to rotate, and the connecting piece drives the clamping jaw to clamp and fix the silk-screen steel mesh to be cleaned, so that the silk-screen steel mesh can be clamped to ensure that the silk-screen steel mesh is kept stable in the cleaning process; and the phenomenon of position deviation or instability possibly occurring in the cleaning process is effectively avoided.

The present invention discloses a printing device with a quickly detachable pressure roller in the technical field of printing machines, comprising a bracket assembly and a flipping mechanism; the bracket assembly comprises a bracket, a driving rod and a driving device, the driving rod and the driving device are both connected to the bracket, the driving rod is connected to the driving device, and drives the driving rod to rotate, gears are arranged at both ends of the driving rod, and the gears are driven to rotate by the driving rod; the bracket comprises a vertical pole and a pressure roller, the pressure roller is movably connected to the vertical pole, and mounting shafts are arranged at both ends of the pressure roller; the flipping mechanism is respectively connected to the driving rod and the pressure roller through gears and mounting shafts, and the flipping mechanism is flipped by the gears. In this printing device with a quickly detachable pressure roller, the pressure roller can be directly removed from the vertical pole through the flipping mechanism, and the pressure roller can be quickly disassembled and installed, thereby improving the replacement efficiency of the pressure roller, thereby indirectly achieving the purpose of improving production efficiency.