191results about "Cylinder presses" patented technology

The utility model discloses an HTCC ceramic chip hole-filling printing machine printing platform which comprises a rack table, a horizontal transverse sliding rail is horizontally and transversely arranged on the rack table, an installation base is arranged on the horizontal transverse sliding rail in a sliding mode, and a drag chain used for driving the installation base to slide on the horizontal transverse sliding rail is arranged on the rack table. A printing platform is arranged on the mounting base, a mounting block is arranged on one side of the mounting base, a rotating breathable paper feeding shaft and a rotating breathable paper receiving shaft are horizontally and longitudinally arranged on the mounting block, and breathable paper is wound on the breathable paper feeding shaft and the breathable paper receiving shaft. The breathable paper is led out of the breathable paper feeding shaft, passes through the printing platform and then is wound on the breathable paper receiving shaft, a negative pressure hole is formed in the printing platform, and the breathable paper on the printing platform is adsorbed to the printing platform through negative pressure in the negative pressure hole. The printing platform of the HTCC ceramic chip hole filling printing machine is used for small hole filling printing of HTCC ceramic chips.

The utility model discloses a high-stability printing device, including an unwinding component, characterized in that a first reverse bending component, a double-sided dust removal and air suction component, a double-sided corona component, a front traction roller group, an overprint speed regulating traction component, and an arranged printing unit are sequentially arranged on one side of the unwinding component, a first electric eye for detecting overprint color marks is arranged in the first group of printing units, and the first electric eye can control the action of the overprint speed regulating traction component, a first rear traction roller group, an online visual detection component, a second reverse bending component, a slitting and trimming component, and a second rear traction roller group are sequentially arranged at the discharge end of the last group of printing units, a single sheet cutting knife group, a single sheet conveyor belt group and a material receiving table are arranged on one side of the second rear traction roller group, and a warp winding roller group, a third rear traction roller group and a winding component are arranged below the second rear traction roller group. The utility model has a simple structure and a reasonable design, can effectively improve the stability of printing operations, and arranges different components to ensure printing quality, has more abundant functions, and can realize the slitting, stacking, collection or winding collection of printed paper at the same time, meeting different collection requirements.

A control system for a can decorator structured to apply images to cans includes a can inspection system structured to capture images of a can, a controller structured to receive the captured images and to analyze the captured images to determine a quality of the image applied to the can based on a comparison of the captured images and a reference image, and an adjustment assembly structured to adjust a circumferential or translational position of a plate cylinder attached to a plate cylinder shaft end of a plate cylinder shaft, the adjustment assembly including at least one stepper motor, wherein operation of the at least one stepper motor causes the circumferential or translational adjustment.

To provide a method for producing a coated substrate which makes positional displacement in a transfer direction of a coated film applied to a coating protruding portion inconspicuous.SOLUTION: A producing method of a coated substrate 100 includes performing coating on a substrate 1, which has grooves 3 and projections 2, using a printing plate 25 in a relief printing method. Four sides of each of the projections 2 have a front side 4, a rear side 5, and lateral sides 6 that face each other. Directions of the front side 4 side relative to the rear side 5 of the projection 2 are the same. The projection 2 includes a coated projection 28 and a non-coated projection 29. The printing plate 25 has a relief section 26. The periphery of the relief section 26 includes a front end edge 261, a rear end edge 262, and lateral end edges 263. Among the front end edge 261 and the rear end edge 262, at least one adjacent to the non-coated projection 29 of the substrate 1 is not formed in a linear shape that is orthogonal to the direction of the front side 4 side relative to the rear side 5. The producing method includes sequentially coating the coated projection 28 by bringing the relief section 26 into contact with the coated projection 28 while conveying the substrate 1.SELECTED DRAWING: Figure 1

A printing plate pressure adjustment system for a can decorator including a printing plate cylinder assembly having a printing plate cylinder drive shaft, and a blanket wheel. The system includes an actuator, a control system structured to control operation of the actuator to adjust a pressure between the printing plate cylinder assembly and the blanket wheel, an eccentric bushing disposed around the printing plate cylinder drive shaft, wherein rotation of the eccentric bushing causes the printing plate cylinder to move toward or away from the blanket wheel, and a drive mechanism coupled between the actuator and the eccentric bushing, wherein operation of the actuator causes the drive mechanism to rotate the eccentric bushing.

The utility model discloses an ink splashing prevention protection structure for a photogravure press, which comprises a fixed sleeve, a telescopic sleeve capable of sliding along the axial direction of the fixed sleeve is arranged in the fixed sleeve, and a flange plate is arranged at one end of the fixed sleeve; the outer side end, away from the flange plate, of the telescopic sleeve extends out of the fixing sleeve and is rotationally connected with a rotating ring disc through a copper sleeve, and a blocking cover is further fixedly arranged on the outer wall of the outer side end of the telescopic sleeve and is of a fan-shaped structure. A hole in one end of the plug sleeve is a round hole, a hole in the other end of the plug sleeve is a taper hole, the round hole is communicated with the taper hole, the plug sleeve is fixedly connected with the rotating ring disc through a screw, the outer diameter of the rotating ring disc is larger than that of the plug sleeve, and the rotating ring disc and the plug sleeve are both located in a covering area of the blocking cover. The printing plate roller has the advantages of preventing printing ink on the printing plate roller from splashing to a printing base material, being good in protection and sealing effect on the top plate shaft and the printing roller plug, simple in structure, convenient to disassemble and assemble, flexible and convenient to use and the like.

The utility model discloses a metal label printing dustproof device, and relates to the technical field of dustproof equipment. The device comprises a shell, a movable door is hinged to one side of the shell, a sealing ring is bonded to one side of the movable door, a plurality of L-shaped sliding rails are fixedly connected to the inner walls of the two sides of the shell, and a through sliding groove is formed in one side of each sliding rail; short shafts are fixedly connected to the two sides of the multiple storage plates correspondingly, and the multiple short shafts are located in the multiple sliding grooves correspondingly; the mounting base is fixedly connected to the inner wall of one side of the shell, a telescopic rod is rotatably connected between the inner walls of the two sides of the mounting base, a guide plate is fixedly connected to the inner wall of the bottom of the shell, and a movable rod is slidably connected to the inner side of the guide plate. According to the utility model, a good dustproof effect can be provided for the label, and the label is very convenient to take and place, so that the working efficiency is improved.

The utility model relates to the technical field of proofing machines, in particular to a flexographic printing proofing machine stable in printing, which comprises a fixing shell, a supporting plate is mounted at the upper end of the fixing shell, a mounting block is mounted at the upper end of the supporting plate, a fixing groove is formed in the inner wall of the mounting block, an automatic proofing assembly is mounted on the inner wall of the fixing groove, and the automatic proofing assembly is mounted on the inner wall of the fixing groove. A mounting block is installed on the fixed shell, a sample making plate is installed at the upper end of the mounting block, a sample making groove is formed in the inner wall of the sample making plate, a controller is installed on the outer wall of the fixed shell, and an energy supply box is installed on the outer wall of the fixed shell. And the worker presses the lifting button again, the controller controls the small hydraulic rod to start, the small hydraulic rod descends to the position where the object needs to be printed is pressed, the worker presses the proofing button again, the controller controls the electric control servo module to start, and printing proofing is conducted.

A can decorating system includes a can decorator including at least a plurality of cylinder plates and a plurality of inking stations; and a control station communicatively coupled to the can decorator. The control station includes an input apparatus; a display; a control system structured to monitor and control operations of the can decorator; and an automatic label creator structured to receive a label specification, create a label, determine values for image registration based at least in part on the label specification and data associated with previously applied labels, and transmit at least the label and the values to the control station. The control system causes the plate cylinders and inking stations to be adjusted based on the label and the values of image registration. The plate cylinders and inking stations print the label on undecorated cans based on the label and the values.

The utility model discloses a rotary double-sided printing machine, which belongs to the technical field of printing machines and comprises a working table, a printing machine body is fixedly connected to one side of the top of the working table, rotatable printing rollers are fixedly connected to the inner wall of the printing machine body and the interior of the working table, and a cleaning mechanism is arranged on the other side of the top of the working table. A connecting mechanism is arranged at the end of the cleaning mechanism, and a blowing mechanism is arranged on one side of the cleaning mechanism. The cleaning mechanism comprises two connecting plates which are symmetrically distributed, a rotatable cleaning roller is arranged between the two connecting plates, a collecting box is arranged on one side of the cleaning roller, the collecting box is arranged in an inclined mode, and the higher end of the inclined face of the collecting box makes contact with the lower semicircular face of the cleaning roller; and the connecting mechanism comprises two fixed cylinders which are symmetrically distributed. The paperboard cleaning device can clean the surface of a paperboard, and the effect of guaranteeing the qualified rate of printed products is achieved.

The application discloses a printing machine ink flying prevention device and method, and relates to the technical field of printing machines, which comprises a device main body, an enclosure, an ink scraping plate and a second rotating shaft, one side of the device main body is fixedly connected with a wallboard, one side of the wallboard is rotationally connected with two groups of symmetrically-arranged first rotating shafts, the outer part of one group of the first rotating shafts is fixedly connected with a meshing roller, the outer part of the other group of the first rotating shafts is fixedly connected with a rubber roller, the tail end of the first rotating shafts is fixedly connected with a bearing, and the outer part of the wallboard is fixedly connected with a fixed plate; a clamping groove is formed in the outer part of the ink scraping plate, a spring is fixedly connected with the outer part of a fixed shaft, and a spraying mechanism is installed on the other side of the device main body. The device adopts the meshing roller and the rubber roller to work cooperatively, combines with the self-adaptive ink scraping plate, significantly reduces ink splashing during printing, and provides necessary lubrication and cooling for key components through the spraying system, thereby ensuring the stable operation of the printing machine. Meanwhile, the overall structure design is ingenious, and the printing efficiency and quality are improved.

The invention relates to a multi-layered plastic squeegee (100) for use in a machine for removing excess liquid from a surface (102) and to a method for its manufacture. The plastic squeegee (100) comprises a laminate of several laminated plastic films (30, 32, 34; 30, 31, 32, 33, 34). A first longitudinal side (50) of the plastic squeegee (100) forms a wiping edge (54) between a top (62) and a bottom (64) of the plastic squeegee (100). The plastic squeegee (100) is designed to glide over the surface (102) with the wiping edge (54) to remove the excess liquid. The plastic squeegee (100) further comprises a fastening section (60) formed on the longitudinal side (58) opposite the wiping edge (54), which is designed to fasten the plastic squeegee (100) to a squeegee holder of the machine.It is proposed that the plastic squeegee (100) comprises a laminate of at least three laminated plastic films (30, 32, 34; 30, 31, 32, 33, 34) and has a thickness (d_100) of more than 1.0 mm.

The utility model relates to the technical field of glass printing, in particular to a glass processing and printing device. According to the glass processing printing device provided by the embodiment of the invention, a glass plate product to be printed is placed on the workbench and pushed to the position of the cleaning roller, and the cleaning roller can adhere dust and an oil film on the surface of the glass plate through the viscous silica gel layer on the surface of the cleaning roller. And then the glass plate product moves towards the first printing machine and the second printing machine until printing treatment is achieved through the first printing roller and the second printing roller. And after the printing treatment is completed, the surface of the glass plate product can be in contact with the heating roller immediately to realize thermocuring, so that the printing firmness is ensured. By adopting the structural design, dust and an oil film on the surface of a glass plate product can be cleaned in advance before printing, and heat curing is immediately carried out after printing is completed, so that the problem that printed patterns are not clear or fall off can be effectively prevented.

A method according to the invention for operating a web-fed printing press comprising a roll changer (10) and a plurality of printing units (20), wherein a flying web change from a first web (13) to a second web (15) takes place with the creation of a splice (17), and wherein settings are made on the printing units (20) in accordance with the passage of the splice (17) through the web-fed printing press (1), is characterized in that at least two printing units (20) are designed as double-sided printing units (20) for flexographic printing, and in that switching is carried out from a first partial printing unit (21) to a second partial printing unit (22) of the respective double-sided printing unit (20) in accordance with the passage of the splice (17) through the web-fed printing press (1). The invention advantageously makes it possible to operate a flexographic printing press non-stop and in an automated manner during a web change.The invention is advantageously used in the operation of a web-processing rotary printing press for flexographic printing; it increases its degree of automation, productivity, and print quality.

The utility model discloses a printing equipment for packaging carton board, including printing equipment main part, the lower extreme fixed connection of printing equipment main part has the base, one side fixed connection of printing equipment main part has control computer. The utility model discloses a printing equipment for packaging carton board, control motor drive lift control lever rotates in the inside of lift groove, makes the movable block lift activity in the outer wall of lift control lever, can drive dust extraction hopper simultaneously in the inside lift activity of N type adjusting support, suction pump can provide suction, can carry out dust extraction operation to the paperboard on carton movable tray, dust etc.

The present invention relates to the technical field of flexographic printing presses, specifically a multi-functional modular flexographic printing press, including a fixed support frame and a flexographic printing press. The flexographic printing presses are uniformly and fixedly installed on the fixed support frame. A spraying device is provided at the top of the flexographic printing press, a drying control device is provided at the end of the flexographic printing press, and a spraying control device is provided at the front end of the flexographic printing press. The spraying device includes an air pump, sliding support columns, fixed locking bolts, atomizing nozzles, a water storage tank, a delivery pipe, and a support mounting platform. The sliding support columns are symmetrically and fixedly connected to the bottom ends of both sides of the support mounting platform, and the fixed locking bolts are threadedly and rotatably inserted into the sliding support columns. In the present invention, the number of flexographic printing presses is not less than four and is arranged in a modular manner, so that each flexographic printing press can print different colors and different patterns, and thus complex patterns of different colors can be quickly printed on the paper output from this equipment.

The utility model belongs to the field of flexo printing machines, and particularly relates to a flexo printing machine frame of a gloss oil leveling paper path, which comprises a flexo printing machine body, and a drying device is arranged in the flexo printing machine body. A printing device is arranged in the flexographic printing machine body; a plurality of transmission rollers are arranged in the flexo printing machine body; printing paper is arranged between the conveying rollers. An air cylinder is fixedly connected to the inner side wall of the flexo printing machine body. The output end of the air cylinder is fixedly connected with a connecting frame. The inner side wall of the connecting frame is rotationally connected with a pressing roller. By arranging the multiple conveying rollers, when the device conducts normal printing on printing paper, the surface gloss oil printing technology needing long paper path leveling is considered, the compatibility of the printing machine for various technology requirements is improved, and the technology selection range of the printing machine is also expanded.

The utility model belongs to the technical field of wool sweater production and processing, and specifically is a wool sweater production and processing printing and dyeing equipment, comprising a printing and dyeing table; a printing and dyeing machine is fixedly connected to the top of the printing and dyeing table; two hydraulic cylinders are fixedly connected to the bottom of the printing and dyeing machine; two output ends of the hydraulic cylinders are fixedly connected to printing and dyeing plates; two fixed plates are fixedly connected to the side walls of the printing and dyeing plates; the two fixed plates are arranged oppositely; a sliding bar is fixedly connected to the side walls of the fixed plates; one end of the sliding bar is arranged in a semicircular arc; a sliding block is slidably connected to the middle of the sliding bar; a fixed rod is fixedly connected to the middle of the sliding block; the side walls of the two fixed rods are rotatably connected to the first roller; the fluff adhered to the bottom of the printing and dyeing plate can be cleaned by the first roller, which can effectively reduce the clarity and accuracy of the printed color caused by the fluff adhered to the printing and dyeing plate during the printing and dyeing process, and can reduce the problem of uneven contact between the fluff at the bottom of the printing and dyeing plate and the wool sweater fabric.

The utility model relates to the field of printing equipment, and discloses soldering paste printing equipment which comprises a placing table, the placing table is fixed on the top face of a workbench, two guide rails are fixed on the top face of the workbench, a cleaning plate is fixed between sliding blocks of the two guide rails, an air outlet groove is formed in the bottom face of the cleaning plate, and the air outlet groove is formed in the top face of the workbench. Air outlet holes are formed in the left side and the right side of the cleaning plate respectively, air blowers are fixed to the left side and the right side of the cleaning plate respectively, a dust collection groove is formed in the bottom face of the cleaning plate, dust collection holes are formed in the left side and the right side of the cleaning plate respectively, and dust collectors are fixed to the left side and the right side of the cleaning plate respectively. According to the utility model, the guide rail, the cleaning plate, the blower, the dust collector and the connecting pipe are matched for use, so that floating dust and impurities on the upper surface of the PCB can be cleaned, the subsequent printing quality is improved, the surface of the PCB cannot be damaged at all, and the product integrity is ensured.

The utility model relates to the technical field of packaging box cleaning, and discloses rapid wine packaging box printing cleaning equipment which comprises a workbench, the top of the workbench is fixedly connected with a discharging table, the top of the discharging table is fixedly connected with a mounting plate, the surface of the mounting plate is fixedly connected with a first fixing plate, and the first fixing plate is fixedly connected with a second fixing plate. A driving motor is mounted at the top of the first fixing plate, a fixed cleaning roller is fixedly connected to the output end of the driving motor, and an adjusting assembly is mounted on the surface of the mounting plate. By arranging the fixed cleaning roller and the movable cleaning roller, the two faces of the packaging box can be synchronously cleaned, by arranging the sliding block, the electric hydraulic rod is started, the output end of the electric hydraulic rod drives the sliding block to slide in the sliding table, the movable cleaning roller is synchronously driven to be close to or away from the fixed cleaning roller, and the packaging box is cleaned. And the distance between the fixed cleaning roller and the movable cleaning roller is adjusted, and surface cleaning work of packaging boxes with different diameters is facilitated.

The present application relates to printing equipment technical field, disclose a kind of cigarette packaging offset printing quick positioning clamping device.The present application includes: fixed frame, two clamping mechanisms and the cleaning mechanism for automatically flushing clamping mechanism are provided on the fixed frame;Clamping mechanism includes the T-shaped sleeve rotationally connected with the fixed frame, T-shaped sleeve is provided with the T-shaped top shaft that can be axially telescopic, by telescopic plate roller is clamped and limited, T-shaped sleeve and T-shaped top shaft between being provided with the bellow for blocking ink intrusion;Cleaning mechanism includes the slot ring covered in the bellow outside, slot ring is provided with the annular nozzle connected with external water supply equipment and the absorption cavity connected with external water pumping equipment.The present application effectively solves the ink pollution problem by physical isolation and automatic cleaning, improves equipment life and production efficiency.

The utility model relates to the field of UV photocuring, and discloses a UV photocuring device which comprises a base, UV curing equipment is mounted on the top surface of the base and comprises a supporting frame, a mounting frame, a UV irradiation lamp, a first guide frame, a second guide frame and a fan mechanism, the supporting frame is mounted on the top surface of the base, the mounting frame is fixedly arranged on the top of the supporting frame, and the UV irradiation lamp is fixedly arranged on the mounting frame. A UV irradiation lamp is fixedly arranged on the inner side of the mounting frame, inlets and outlets are formed in the two side walls of the mounting frame, a fan mechanism is fixedly arranged at the top of the mounting frame, and the fan mechanism comprises power supply equipment, a first integrated circuit, a first fan frame, a second integrated circuit and a second fan frame. Through the arrangement of the front fan and the rear fan, the front fan and the rear fan can drive air at the UV irradiation lamp to circulate after being started, so that heat dissipation operation of the UV irradiation lamp is achieved, dust removal and cooling operation of flexible printed matter is carried out while heat dissipation is carried out, and the functionality of equipment is improved.

The utility model discloses sanitary napkin printing equipment, which belongs to the technical field of sanitary napkin processing and comprises a printing machine body, a side plate is fixed at the feed inlet end of the printing machine body, an inlet allowing a material belt to pass through is arranged on the side face of the side plate, and a suction seat located on the periphery of the inlet is arranged on one side of the side plate. A scraping plate for scraping impurities on the surface of the material belt is fixed to the inner side face of the suction base, a removing assembly is arranged on the suction base, and an assembling assembly is arranged at one end of the suction base; the two side faces of the material belt are synchronously scraped through the two scraping plates, so that impurities adhering to the surface of the material belt are scraped, meanwhile, the impurities scraped by the scraping plates are sucked and removed through the removing assembly, the problem that the impurities fly around and pollute the material belt again is solved, the impurity removing efficiency is high, and the labor intensity of workers is reduced. And it is ensured that the material belt enters the printing machine body to be printed after impurities are removed, the cleanliness of the surface of the material belt is effectively improved, and then the finished product quality of material belt printing is improved.

The utility model discloses a printer powder removing device, and relates to the technical field of printers. The dust removing device of the printing machine comprises a paper conveying plate used for containing paper, a hollow roller erected on the paper conveying plate and a rotary driving part in transmission connection with the hollow roller, the rotary driving part drives the hollow roller to rotate so as to convey the paper on the paper conveying plate, and the hollow roller is provided with a hollow cavity. A plurality of adsorption holes communicating with the hollow cavity are formed in the periphery of the hollow roller, the hollow cavity communicates with a suction assembly, the suction assembly provides negative pressure for the hollow cavity and the adsorption holes, paper carries powder in the printing process, and the powder can be sucked into the hollow cavity through the adsorption holes through the negative pressure and then sucked away through the negative pressure. And the printing quality of paper is improved.

The invention relates to a roller for a rolling mill, embossing mill and / or printing mill, comprising at least one heating device for heating the outer surface of the roller, wherein the heating device comprises at least one channel arranged inside the roller, wherein at least one electrical heating element is arranged inside the channel, and in at least one space between an outer surface of the heating element and an inner wall of the channel at least one, at least partially fluidal and / or castable heat-conducting element is arranged; a printing, embossing and / or rolling mill, in particular for the production of elements of an electrical storage device, and a method for converting a heating device of a roller.

The invention relates to a printing cylinder assembly (1) for detecting errors present and / or being formed during printing. The printing cylinder assembly (1) comprises: at least one printing cylinder (2) adapted to print on a material and having at least one cylindrical body (21), at least one shaft (23) forming an axis of rotation for the body (21), and characterized in that the printing cylinder (2) has at least one cavity (22) extending from a surface of the body (21) towards an inner volume thereof; at least one sensor (3) adapted to be placed in said cavity (22); at least one communication interface (4) adapted to communicate with an external device; at least one control unit (5) adapted to receive data from the sensors (3) and to transmit these data to an external device directly and / or by processing them via a communication interface; and at least one power source (6) for supplying the electrical power required by the sensor (3), the communication interface (4) and / or the control unit (5).

The application belongs to the technical field of printing machines, and particularly relates to a novel medium printing equipment and a preparation process, which comprises a printing equipment body, the printing equipment body comprises a box, a cleaning mechanism for cleaning the fabric in a light touch manner, a scraping and hanging mechanism for improving the permeation effect of printing paste on the fabric, a conveying mechanism for facilitating smooth conveying of the fabric, and a washing mechanism for facilitating water washing of a printing guide belt are sequentially arranged on the box along the fabric printing running direction, the scraping and hanging mechanism comprises lifting plates, first lifting drive mechanisms are arranged below the two lifting plates, pressure rollers and coating rollers are arranged left and right between the two lifting plates, and feeding mechanisms are arranged above the lifting plates. The application has the advantages of reasonable design, simple structure, improved use functionality of the device, facilitated adaptive adjustment according to different specifications of the fabric, improved permeation effect, reduced amount of dyeing and chemical materials, guaranteed forming effect, improved work progress, and satisfied use requirement.

The invention provides a screen printing machine with a dust removal function and a using method thereof, and belongs to the technical field of screen printing machines, the screen printing machine comprises an adhesive tape roller, a wind-up roller, a moving roller and supports, the supports are arranged on the two sides of a transmission belt, the adhesive tape roller and the wind-up roller are rotationally installed on the supports arranged on the two sides, and a driving part is connected to a conveying roller; a containing frame is fixedly installed on the support, an installation sleeve is installed in the containing frame in a sliding mode, a movable block is installed in the installation sleeve in a telescopic mode, the movable roller is rotatably installed on the movable block, a second telescopic piece is fixedly installed in the containing frame, the output end of the second telescopic piece is connected with the installation sleeve, and when the movable block is contracted into the installation sleeve, the movable block is connected with the second telescopic piece. An adhesive tape is wound on the adhesive tape roller, the moving roller and the winding roller; and the surface of the workpiece is fully covered with dust through the adhesive tape, screen printing operation can be conducted immediately after dust is treated, and the situation that dust adheres to the workpiece after dust is removed through a dust adhering roller in the prior art can be avoided.

The metal ink printing device with the dust cleaning function comprises a cover body, supporting plates are rotationally connected to the two sides of the outer surface of the cover body, and clamping grooves are formed in the middles of the outer surfaces of the supporting plates. According to the metal ink printing device with the dust cleaning function, through arrangement of a clamping groove, a cleaning roller, a fixing pipe, a dust collector and a collecting hopper, the cleaning roller is clamped in the clamping groove, replacement and cleaning after long-time use are facilitated, dust and impurities on the surface of metal are swept and removed through the rotating cleaning roller, and the cleaning efficiency is improved. And meanwhile, a dust collector enables the interior of a fixing pipe to generate suction force through a dust collection pipe, dust is sucked, then the dust and impurities are discharged into a box body through a waste discharge pipe, the situation that the dust and impurities drift around to affect the printing environment is avoided, and the printing efficiency is improved. And dust entering the box body can fall into the collecting hopper to be cleaned in a centralized mode, and cleaning is more convenient.