294results about "Rotary lithographic machines" patented technology

The invention relates to a sheet-fed printing press having a charging device (86; 102), a feeding and a removing sheet transport means (34; 61; 35; 69), which form a transfer point (101), wherein a movement path of a gripper system (59; 109) of the removing sheet transport means (35; 69) in the region of ​​the transfer point (101) has a circular arc around a rotation axis (129; 131) and wherein a distance of a discharging electrode unit (123) of the sheet-fed printing press from the rotation axis (129; 131) is smaller than a distance (133) of the transfer point (101) from the rotation axis (129; 131), and to a sheet-fed printing press having a coating unit (05; 06; 07), the earthed impression cylinder (34; 61) of which forms a contact zone (55) and which has a charging electrode unit (88) aligned with the impression cylinder (34; 61), the charge core zone (89; 106) of which is arranged downstream from the contact zone (55) and upstream from a transfer point (101) which leads away, and having a discharging electrode unit (123; 124), the discharge electrode (136; 137) of which is at a distance of at least 10 mm from any earthed component.

According to the inking mechanism of the plate cylinder and the printing machine, an ink channeling roller is connected with a supporting shaft through a swing arm, an inking roller is arranged on the supporting shaft, and supports on the two sides of the inking roller are connected to the supporting shaft; the bracket is rotationally adjusted; a first cylinder pillow is arranged on the support, the rotary position-correcting transmission device connected with the support comprises a rotary guide seat and a rotary position-correcting transmission part which are matched with each other, a rotary position-correcting guide curve track is arranged on the rotary guide seat, and the rotary position-correcting transmission part comprises a position-correcting movable part which can move along the rotary position-correcting guide curve track in a matched mode. In the driving process of the swing arm, the rotary position correcting transmission device is in linkage operation in a matched mode and drives the support to rotate for position correction in a matched mode, so that the first cylinder bearers on the support rotate for position correction together, the positions of rolling matching contact points of the first cylinder bearers are kept unchanged, and the pressure width cannot be affected by replacement of plate cylinders of different diameter specifications; the pressure width of the inking roller is consistent with the pressure width of the plate cylinder, so that inking is more stable.

The utility model relates to a printing dampening device which is characterized in that a water transfer clutch movable frame and a dampening clutch movable support are arranged on a dampening main support, a water source roller and a metering roller are connected to the water transfer clutch movable frame, a dampening roller is connected to the dampening clutch movable support, and the dampening roller is located on a moving path where the metering roller moves forwards along with the water transfer clutch movable frame to be combined and pressed; the connecting rod is hinged to the dampening clutch movable support, a return stress part is arranged on the connecting rod, and a return force application part is arranged on the water transmission clutch movable frame. According to the dampening main support, only the clutch movement driving device is needed to drive the water conveying clutch movable frame to move forwards and backwards, the metering roller can be driven to move forwards and backwards, and the water conveying clutch movable frame can move forwards to drive the dampening clutch movable support and the dampening roller to move forwards together. The water conveying clutch movable frame can be matched with the connecting rod to drive the dampening clutch movable support and the dampening roller to return together, and dampening clutch actions of the dampening clutch movable support and the dampening roller do not need to be additionally provided with a driving structure and do not need to be additionally and independently provided with a power source.

The utility model relates to the technical field of offset presses, and discloses a paper cup high-gloss offset printing mechanism which comprises a working table, a control cabinet is installed on one side of the working table, the front end of the working table is rotationally connected with a rotating disc, the front end of the rotating disc is fixedly connected with a plurality of placing rods, and an offset printing device is installed at the front end of the working table. According to the high-gloss offset printing mechanism for the paper cups, a user inserts the paper cups into the front ends of the placing rods, the control cabinet controls the rotating disc and rubber rolling brushes in the offset printing device to rotate, after the placing rods rotate to the positions of the rubber rolling brushes, the outer walls of the paper cups are attached to the rubber rolling brushes, and patterns are printed on the outer walls of the paper cups through rotation of the rubber rolling brushes; after the placing rod rotates to the position below the offset printing device, a user takes down the paper cups and places the paper cups on the conveying belt to be conveyed, through rotation of the rotary disc, the equipment can conduct printing alternately without waiting, and the printing efficiency is improved.

The utility model relates to a double lifting swing arm type offset printing mechanism which is characterized in that a printing roller station, a first lifting swing arm and a second lifting swing arm are arranged on a rack, a first mounting part for mounting a transfer printing roller is arranged on the first lifting swing arm, a second mounting part for mounting a printing roller is arranged on the second lifting swing arm, and the printing roller station is arranged above the first mounting part; the second mounting portion is disposed below the first mounting portion. A double-lifting swing arm structure is adopted, a transfer printing roller and a printing roller can be assembled, the corresponding transfer printing roller and the printing roller are lifted and lowered in a swing lifting mode, a large operation space can be vacated for assembly after the transfer printing roller and the printing roller swing and are separated from each other along with corresponding swing arms, the space occupied by the double-lifting swing arm structure is relatively compact, and the disassembly and assembly convenience of all the rollers is improved; the assembly of transfer rollers with different sizes and diameters and the like is met, the operation is stable, the size of the closing pressure is relatively convenient to debug and is not easy to interfere with each other when the closing pressure and the separating pressure are separated, and the closing pressure is lifted upwards and is not easy to conflict during the closing pressure.

The utility model relates to a water transfer mechanism of a printing dampening device, which is characterized in that a water source roller drives a first gear, a water transfer roller drives a second gear, the water source roller is connected to a water transfer clutch movable support, a transition transmission gear set and a pressure regulating swing arm are arranged on the water transfer clutch movable support, and the water transfer roller is connected to the pressure regulating swing arm. An output transition gear of the transition transmission gear set is in meshing transmission connection with the second gear, the swing axis of the pressure adjusting swing arm and the axis of the output transition gear are coaxially arranged, and the first gear is in transmission connection with the transition transmission gear set. When the leaning pressure of the water source roller and the water conveying roller needs to be adjusted or the water source roller and the water conveying roller are abraded and need to be adjusted, the pressure adjusting swing arm rotates around the center of the pressure adjusting swing arm to a proper position, so that the pressure between the water source roller and the water conveying roller is proper; after adjustment, the first gear, the transition transmission gear set and the second gear can keep a normal meshing transmission relation all the time, transmission and water transmission stability is ensured, and vibration and shaking are reduced or even avoided.

The utility model relates to the field of printing, in particular to a printed matter rubber surface printing device. The printed matter rubber surface printing device comprises an offset press body, a dust collector is installed on one side of the offset press body, an electrostatic roller used for removing dust of materials is installed above the to-be-printed materials in the offset press body, a motor and a cleaning brush are installed below the electrostatic roller, and the cleaning brush used for cleaning dust on the surface of the electrostatic roller is arranged on one side of the electrostatic roller. According to the printed matter rubber surface printing device, dust and impurities on the surfaces of materials can be efficiently adsorbed through the electrostatic effect generated by the electrostatic roller, especially dust difficult to clean in tiny pits or textures, the cleaning brush can reciprocate in the horizontal direction under the driving of the transmission mechanism, and the cleaning effect is good. By means of the design, dust accumulation is effectively prevented, and continuous and efficient work of the electrostatic roller is guaranteed.

An image printed on a pre-printed sheet on which information of a specific color is printed in advance and the information are scanned. the specific color included in scanned and obtained image data is removed, and an image obtained after the specific color is removed is inspected based on a reference image.

The invention relates to a water transfer mechanism of a printing dampening device, a water source roller is provided with a first gear in a transmission mode, a water transfer roller is provided with a second gear in a transmission mode, the water source roller is connected to a water transfer clutch moving support, a transition transmission gear set and a pressure adjusting swing arm are arranged on the water transfer clutch moving support, and the water transfer roller is connected to the pressure adjusting swing arm. An output transition gear of the transition transmission gear set is in meshing transmission connection with the second gear, the swing axis of the pressure adjusting swing arm and the axis of the output transition gear are coaxially arranged, and the first gear is in transmission connection with the transition transmission gear set. When the leaning pressure of the water source roller and the water conveying roller needs to be adjusted or the water source roller and the water conveying roller are abraded and need to be adjusted, the pressure adjusting swing arm rotates around the center of the pressure adjusting swing arm to a proper position, so that the pressure between the water source roller and the water conveying roller is proper; after adjustment, the first gear, the transition transmission gear set and the second gear can keep a normal meshing transmission relation all the time, transmission and water transmission stability is ensured, and vibration and shaking are reduced or even avoided.

The invention belongs to the technical field of printing machines, and discloses printing liquid supply equipment which is characterized in that a printing liquid box body is arranged on the inner bottom surface of an equipment box, and a moisture filling assembly, a fountain solution filling assembly, an alcohol filling assembly, a printing liquid temperature control assembly and a printing water supply pump are arranged above the printing liquid box body; an alcohol concentration detection assembly is further arranged on the printing liquid box body, the alcohol concentration detection assembly comprises a vertical floating ball channel fixed to the inner top face of the printing liquid box body, and a floating ball detection assembly is arranged in the vertical floating ball channel; the bottom of the vertical floating ball channel is provided with a liquid inlet and connected with a first valve through a pipeline, and the first valve communicates with the printing liquid temperature control assembly through a pipeline. A liquid outlet hole is formed in the upper portion of the vertical floating ball channel and located above printing liquid in the printing liquid box body. The precision of an alcohol concentration detection result is guaranteed in a static detection mode, and compared with traditional dynamic detection, the method is more accurate and higher in controllability.

Method for controlling the amount of dampening solution in the printing unit of a printing press using a computer and a measuring device, comprising the following process steps: - Adjusting the amount of dampening solution in the printing unit based on the data of the current print job, - Reduction of the dampening agent quantity towards the lubrication limit (LS) by the computer, - Acquisition of color measurement values ​​by the measuring device in at least one area with solid tone at low area coverage (FD) and at least one area with halftone at high area coverage (FD) on a substrate (1) of the current print job, - The computer stops reducing the amount of dampening solution if the dot gain of the halftone increases significantly in the high coverage area (FD) and the density of the solid tone increases significantly in the low coverage area (FD).

To provide a printer, a correction program for a printer, and an image correction value derivation method for a printer which can accurately perform inspection.SOLUTION: A printer includes: a printer body 2 for performing printing on a sheet while feeding the sheet in a feed direction; a line camera 3 for photographing the sheet fed in the feed direction by the printer body 2 for each constant time interval, and thereby generating a plurality of pitch images; photographic image generation means 4 for generating a photographic image in which at least a part of the sheet is photographed on the basis of a plurality of pitch images generated by the line camera 3; and correction image output means 5 for correcting a length in a vertical direction which is a direction corresponding to the feed direction of the photographic image or the plurality of pitch images on the basis of a correction value, and outputting the corrected image as a correction image.SELECTED DRAWING: Figure 1

The invention discloses an alcohol dampening four-opening single-color printing machine, and belongs to the technical field of printing machines, the alcohol dampening four-opening single-color printing machine comprises a rack placed on the ground of a plant, a motor is fixedly installed on the outer side of the rack, and a printing roller piece is arranged on the inner side of the rack; the printing roller piece comprises a fountain roller, a metering roller, a dampening roller, a dampening stringing roller, a middle roller, a first inking roller and a plate cylinder which are rotationally installed on the inner side of the rack, the shaft portions of the two ends of the fountain roller are rotationally connected with a first water glue foot and a second water glue foot respectively, and the metering roller is rotationally installed between the first water glue foot and the second water glue foot. And the metering roller is driven to be attached to the outer side of the dampening roller in the rotating process of the first glue foot and the second glue foot. According to the alcohol dampening four-opening single-color printing machine, the metering roller can be conveniently controlled to be attached to the dampening roller, efficient alcohol dampening operation is achieved, dripped dampening liquid can be recycled, loss of the dampening liquid is reduced, and the dampening effect is improved.

The invention discloses a fountain solution backflow purification type alcohol fountain printing machine, and belongs to the technical field of printing machines.The fountain solution backflow purification type alcohol fountain printing machine comprises a rack, a motor is fixedly installed on the right side of the rack, a fountain roller is rotationally installed on the rack, a fountain is further fixedly installed on the rack, and a branch bucket is fixedly installed on the outer side of the fountain; a fixed plate is fixedly installed below the water bucket, a movable cylinder is elastically and rotationally installed below the fixed plate, the movable cylinder is connected with the shaft part of the water bucket roller through a transmission assembly, meanwhile, the transmission assembly drives the movable cylinder to rotate in a reciprocating mode, and a lifting piston piece is elastically installed on the inner side of the movable cylinder in a lifting mode; an elastic rubber piece is fixedly connected between the lifting piston piece and the fixing plate in a sealed mode. According to the fountain solution backflow purification type alcohol fountain printing machine, dripping fountain solution can be recycled, volatilized alcohol can be recycled, the alcohol concentration of the fountain solution is ensured, and meanwhile the safety of the production environment is improved.

A roll-to-plate process for texturing or patterning discrete substrates, such as displays, lighting or solar panels comprising the steps of supplying an imprinting lacquer, texturing or patterning the imprinting lacquer with an imprint texture which imprint texture is formed by openings and elevations thus creating volumes in the imprint texture to obtain an imprinted lacquer and optionally followed by curing the imprinted lacquer to obtain a solidified textured or patterned layer, characterized in that the texturing or patterning is performed with an imprint texture that comprises domains of greater volumes at its edges, and with a flexible stamp with a Young's Modulus of between 0.1 Giga Pascal (GPa) and 10 Giga Pascal (GPa).

The utility model discloses a packaging material cursor printing machine. The packaging material cursor printing machine is characterized in that a gravure cursor mold is arranged on the surface of a printing plate roller; an ink fountain is arranged below the printing plate roller; a scraper is further arranged below the side of the printing plate roller, and the scraper is used for scraping ink in a non-gravure cursor mold area on the surface of the printing plate roller; when the printing plate roller works, the printing base material is attached to the printing plate roller, and a cursor is printed on the printing base material through the gravure cursor mold after ink is scraped off through the scraper; the cursor recognition unit is used for recognizing a cursor on the printing base material; the data processing module is used for calculating the distance between adjacent cursors on the printing base material according to the cursor data on the printing base material acquired by the cursor recognition unit; and the control module is used for adjusting the traction tension of the printing base material and / or the rotating speed of the printing plate roller according to the distance, obtained by the data processing module, between the adjacent cursors on the printing base material.

The invention relates to an inspection apparatus, a control method of the inspection apparatus, and an inspection system. An image printed on a pre-printed sheet on which information of a specific color is printed in advance and the information are scanned, the specific color included in image data scanned and acquired is removed, and an image acquired after the specific color is removed is inspected based on a reference image.

The invention relates to a method for detecting an undesired ink application (set-off) on a substrate sheet in an offset printing press, wherein a measurement image and a reference image are captured by means of at least one camera and a computer-assisted comparison is carried out. The image is acquired in a region of the substrate sheet that is not in contact with the ink.

The utility model discloses a circulating water supply device capable of automatically replenishing water for a bill rotary press, which comprises a rotary press water tank and a base arranged on one side of the rotary press water tank. The floating plate is arranged, the bottom face of the floating plate makes contact with the liquid level in a water tank of the rotary press in the using process, and when the liquid level descends, the floating plate descends synchronously and drives the detection rod to move in the first limiting plate; the top of the floating plate drives the connecting rod on the other side to synchronously descend through the connecting plate, so that the baffle connected with the connecting rod synchronously descends and gradually opens the water outlet, water flow in the water tank enters the water tank of the rotary press through the water replenishing pipe for water replenishing, and meanwhile the floating plate synchronously ascends along with the water level; and the baffle on the other side is driven to close the water outlet again, so that the water level is controlled within the continuous use range of the rotary press, and automatic water replenishing operation can be realized.

The utility model discloses a dampening position adjusting device of an offset press, which comprises two side plates, inclined guide grooves are respectively arranged on the two side plates, sliding seats sliding along the guide grooves are arranged in the guide grooves, and a fountain roller, a metering roller, a dampening roller, a dampening roller and a liquid collecting groove support are arranged between the sliding seats. The liquid collecting groove support is located below the fountain roller, the metering roller, the dampening roller and the dampening roller, the fountain roller is close to the circumferential wall of the metering roller, a fountain solution containing groove is formed in the gap between the fountain roller and the metering roller, one side of the dampening roller abuts against the metering roller, the other side of the dampening roller abuts against the dampening roller, position adjustment of the sliding base is driven by a first servo motor, and a fixing plate is connected between side plates. A threaded hole in threaded connection with the ball screw is formed in the fixing plate. Therefore, the technical effects of convenient adjustment and reliable and stable structure are achieved.

The invention relates to a double-swing-arm type offset printing device which is characterized in that a plate roller shaft is provided with a detachable and replaceable plate roller cylinder, a first swing arm is provided with a transfer printing roller shaft, the transfer printing roller shaft is provided with a detachable and replaceable transfer printing roller cylinder, a second swing arm is provided with a bottom roller, and the center distance between the transfer printing roller shaft and a first swing supporting shaft of the first swing arm is a first distance R1; the center distance between the bottom roller and a second swing supporting shaft of the second swing arm is a second distance R2, a circular arc corresponding to R1 and a circular arc corresponding to R2 are determined through the plate rollers with the large outer diameter specification, the middle outer diameter specification and the small outer diameter specification, and the overall structure can be reasonably arranged through the double-swing-arm type structure and the setting of the corresponding swing supporting axis position. After the printing roller and the transfer printing roller with different diameter specifications are replaced by the device, the center of the transfer printing roller and the center of the bottom roller can be ensured to be always close to a vertical straight line, and the deviation is extremely small.

The utility model relates to the technical field of overprinting machines, and discloses an overprinting fountain solution dosage control device which comprises a solution box, a control mechanism is fixedly connected to the surface of the solution box, and a sealing mechanism is arranged at the top of the solution box. The control mechanism comprises a control seat, the control seat is fixedly connected to the left side of the liquid tank, a limiting plate is arranged in the control seat, a circular ring is fixedly connected to the right end of the limiting plate, sliding blocks are fixedly connected to the four ends of the surface of the circular ring correspondingly, and a supporting ring frame is fixedly connected to the bottom end of the circular ring; the middle of the bottom of the supporting ring frame is fixedly connected with a conical plug block, and the top of the limiting plate is fixedly connected with a supporting strip. According to the overprinting fountain solution dosage control device, the circular ring can be driven to slide correspondingly under the limitation of the circular ring in the solution box, finally, the conical plug block is driven to slide up and down, the gap between the conical plug block and the bottom end in the solution box is changed, operation is quite convenient, and therefore the overprinting fountain solution dosage control effect is achieved.

The utility model discloses a centering device for four-color printing, which comprises a four-color printing machine and a printing box below the four-color printing machine, the printing box is arranged below the four-color printing machine, a printing head of the four-color printing machine extends to the inner side of the printing box, and a conveying belt is transversely arranged in the printing box. One transmission roller in the conveying belt is fixedly connected with the output end of an external motor through a coupler, and two belt type guide rails are arranged above the conveying belt in parallel; according to the four-color printing machine, the printing box is arranged below the printing head of the four-color printing machine, the printing frame with the belt type guide rail is arranged on the conveying belt of the printing box, and the placing panel arranged in the printing frame in a sleeving mode through the sliding rod is pushed, so that a to-be-printed product can move along the surface of the sliding rod along with the placing panel; the effect of flexibly adjusting the printing position of the to-be-printed matter is achieved, centering of the to-be-printed matter is facilitated, and the printing position of the to-be-printed matter is matched with the position of a printing roller of the four-color printing machine.

Provided is a can manufacturing method, comprising: creating separation data by separating platemaking editing data for each ink color of a printing machine that performs printing on a surface of a can; and manufacturing a proof can by outputting an image corresponding to the platemaking editing data by an ink-jet printer based on the platemaking editing data or the separation data and a predetermined conversion rule, and arranging the image on a can surface, wherein the conversion rule has a rule to reproduce, by ink of the ink-jet printer, the ink color of the printing machine printed based on the separation data.

The present invention relates to a sheet processing machine (01), which is assigned a transport path for transporting sheets (02), which has a coating device (200) with a coating point (201) for coating the sheet (02) with a material, and which has a cooling device (301) with a cooling cylinder (303) arranged downstream of the coating point (201) along the transport path, and which has an inspection carrier (403) arranged downstream of the cooling cylinder (303) along the transport path, and which has a sensor device of the inspection device (401) oriented towards the inspection carrier (403), and a sheet printing machine (01). , a sheet printing machine (01) comprising a Simultan double printing unit (200) having a coating station (201), downstream of which is arranged a curing device (300) equipped with an LED-UV radiation source (302), the curing device (300) having two curing devices (321; 322) for drying two opposite sides of the sheet (02), a conveying path extending between the two curing devices (321; 322), a cooling device (301) of the curing device (300) having a cooling element (303) equipped with a piping system, each cooling section being arranged downstream of each curing section.

The invention relates to a printing system, in particular to an automatic liquid supplementing device for a printing table. The device comprises a main liquid tank, a first fluid on-off element, a physical quantity converter, a liquid supply tank, a controller, an alarm, a second fluid on-off element and a printing table, the physical quantity converter is installed on the liquid supply tank, and the physical quantity converter converts continuously changing physical quantities in the liquid supply tank into digital signals and transmits the digital signals to the controller.

Examples include a sheet-fed printing machine including a sheet simultaneous printing unit having two collect cylinders, which are arranged on top of and in contact with one another. The machine includes a simultaneous printing inspection device and a sheet transport means that defines a section of a transport path for sheets. The section includes an inspection region of the simultaneous printing inspection device. The simultaneous printing inspection device includes a sensor device arranged to be aligned with the inspection region and the detection width of which is at least 80% of the working width. A guide device of the sensor device defines a sensor adjustment path provided for movement of the sensor device and that extends from the simultaneous inspection position to a maintenance position of the sensor device, and that extends linearly and parallel to a transverse direction at least between the simultaneous inspection position and the maintenance position.

The invention relates to a sheet-fed printing press (01), comprising a sheet-fed simultaneous printing unit (200) having two ink collecting cylinders (201; the sheet-fed printing press (01) has a working width of at least 50 cm, a simultaneous printing inspection device (31) and a sheet-fed transport mechanism (39) associated therewith, which defines a section (38) provided for a transport path (09) of the sheet-fed (02), the section (38) comprising an inspection region (37) of the simultaneous printing inspection device (31), and wherein the sheet-fed printing press (01) has a working width of at least 50 cm, the simultaneous printing inspection device (31) and a sheet-fed transport mechanism (39) associated therewith, which defines the transport path (09) of the sheet-fed (02), the sheet-fed transport mechanism (39) being provided for the transport path (09) of the sheet-fed (02). The simultaneous print inspection device (31) has a sensor device (32) arranged in the simultaneous inspection position in alignment with the inspection region (37), the inspection width of which is at least 80% of the working width, and wherein a guide device (33) of the sensor device (32) is further arranged, which guide device defines a sensor adjustment path provided for moving the sensor device (32), the sensor adjustment path extends from a simultaneous inspection position at least to a maintenance position of the sensor device (32) and extends in a straight line and parallel to the transverse direction (A) at least between the simultaneous inspection position and the maintenance position.