Signboard surface printing device

Abstract

The invention discloses a signboard surface printing device which comprises a base, a mounting bin is arranged on the upper side face of the base, a screen frame is slidably connected to the front side wall of the mounting bin, an adjustable scraper is arranged in the middle of the screen frame, guide rail frames which are symmetrically distributed are arranged on the upper side face of the base, and the signboard surface printing device comprises a clamping mechanism and a cleaning mechanism; the clamping mechanism comprises rotating columns, a clamping bin and a clamping head, the rotating columns are arranged in the guide rail frame in a matched mode, the clamping bin is arranged between the two rotating columns, and the replaceable clamping head is connected to the upper side face of the clamping bin in a sliding mode; the cleaning mechanism comprises a cleaning bin, a drying head and a spraying head. The signboard surface printing device can adapt to signboards of different specifications, the applicability is improved, the signboards are cleaned and dried before printing, it is ensured that printing ink adheres firmly and evenly, the quality of printed patterns is improved, the height of the drying head can be adjusted, the drying requirements of the signboards of different specifications are met, and the cleaning and drying effect and efficiency are improved.

Description

Technical Field

[0001] The invention relates to the technical field of surface processing of identification plates, in particular to a surface printing device for identification plates. Background Art

[0002] Signage is a product that integrates planning, architecture, space, sculpture, logic, color, aesthetics, and materials. It conveys various information to people through words, graphics, symbols, colors and other elements, helping people to identify, locate, guide directions, and understand relevant regulations and tips. Through unique design and symbols, signage can mark specific places, facilities, objects, etc., making them uniquely recognizable, such as building nameplates and house numbers, to guide people and help them quickly find the target location in a complex environment, such as indoor signboards and multi-directional signboards; Existing surface printing devices for nameplates usually include components such as a workbench, a gantry, an inkjet head, a wiping assembly, an outer lining, an inner lining, a feed port, a loading plate and a rotating plate. A rodless cylinder is fixed on both sides of the workbench, and a slider on the rodless cylinder corresponds to the outer lining. A first electric cylinder on one side of the slider is connected to the outer lining; a slide groove is provided in the outer lining, and the inner lining is fixed by bolts; the wiping assembly contains a mounting rod and a sponge, and the mounting rod is connected to the gantry; a second electric cylinder on the lower side of the workbench is connected to the support plate, and a connecting rod is provided between the support plate and the loading plate, and a motor on the support plate is connected to the rotating plate. When printing, the first electric cylinder pushes the outer lining and the inner lining to clamp the nameplate, and the rodless cylinder drives it to move, and the inkjet head performs inkjet printing. After printing is completed, the rodless cylinder moves the nameplate above the feed port, and the first electric cylinder loosens the inner lining, and the nameplate falls off automatically. Before printing, the sponge moves with the nameplate to wipe the surface. When loading, the second electric cylinder drives the support plate down to facilitate the placement of the identification plate, the motor rotates the rotating plate to straighten the identification plate, then the second electric cylinder rises, and the first electric cylinder pushes the liner to clamp the identification plate for easy printing; When the shape of the signboard is different, the lining needs to be replaced. The method of fixing the lining by bolts is cumbersome and time-consuming, which affects production efficiency. When the surface of the signboard is wiped with a sponge, particulate dust can easily scratch the surface of the signboard during the wiping process. The scratched surface of the signboard is no longer smooth, which will cause uneven inkjet. The ink may accumulate or fail to adhere at the scratched area, causing the printed text and pattern to be blurred, broken or uneven in color. For this reason, we propose a surface printing device for signboards. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a surface printing device for a signboard, which can be adapted to signboards of different specifications and improve applicability. The signboard is cleaned and dried before printing to ensure that the ink adheres firmly and evenly, thereby improving the quality of the printed pattern. The height of the drying head is adjustable to meet the drying requirements of signboards of different specifications, thereby improving the cleaning and drying effect and efficiency, and can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a surface printing device for a signboard, comprising a base, an upper side of the base is provided with an installation bin, a front side wall of the installation bin is slidably connected with a screen frame, an adjustable scraper is provided in the middle of the screen frame, and a symmetrically distributed guide rail frame is provided on the upper side of the base, including a clamping mechanism and a cleaning mechanism; The clamping mechanism includes a rotating column, a clamping bin and a clamping head. The guide rail frame is provided with a rotating column inside, a clamping bin is provided between the two rotating columns, and a replaceable clamping head is slidably connected to the upper side of the clamping bin. The cleaning mechanism includes a cleaning chamber, a drying head and a spray head. The cleaning chamber is arranged at the right end of the upper side of the base. An adjustable drying head is provided inside the cleaning chamber. A spray head is provided inside the cleaning chamber, which can adapt to different specifications of signboards and improve applicability. The signboards are cleaned and dried before printing to ensure that the ink adheres firmly and evenly and improve the quality of the printed pattern. The height of the drying head is adjustable to meet the drying requirements of signboards of different specifications and improve the cleaning and drying effect and efficiency.

[0005] Furthermore, a control switch group is provided at the front end of the base, and an input end of the control switch group is electrically connected to an external power supply for stable control.

[0006] Furthermore, the clamping mechanism also includes a movable frame, a mounting plate is provided on the right side of the top wall of the base, and two symmetrically distributed screw rods are rotatably connected between the mounting plate and the left inner wall of the base, and the right ends of the two screw rods are threadedly connected to the movable frame, and the upper side walls of the base are provided with symmetrically distributed sliding grooves, and the upper ends of the movable frames are slidably connected to the sliding grooves adjacent to the upper side, and the upper ends of the movable frames are located inside the guide rail frames adjacent to the upper side, and the rotating columns are rotatably connected to the upper ends of the laterally adjacent movable frames for easy movement.

[0007] Furthermore, a motor four is installed on the right side of the mounting plate, and the output shaft of the motor four is fixedly connected to the center of the right end face of the front screw rod two, and the input end of the motor four is electrically connected to the output end of the control switch group, and the outer arc surface of the left end of the screw rod two is fixedly sleeved with a synchronous pulley two, and the two synchronous pulleys two are connected by a synchronous belt two transmission to ensure stable drive.

[0008] The cam is provided with a plurality of guide slots, each of which is provided with a plurality of guide slots, and the guide slots are provided with a plurality of guide slots. The cam is provided with a plurality of guide slots, the guide slots are provided with mounting blocks which are slidably connected to the inside of the guide slots, the mounting blocks are provided with clamping heads, the mounting blocks and the clamping heads are provided with sockets at one end away from the center of the clamping bin, the central axes of the laterally adjacent sockets coincide with each other, a latch is inserted in the inside of the laterally adjacent sockets, the lower side of the mounting blocks are provided with pin shafts, the top wall of the clamping bin is rotatably connected to a rotating rod through a rotating shaft, the front and rear ends of the rotating rod are provided with shifting slots, the lower ends of the pin shafts are located in the inner parts of the shifting slots adjacent to the lower side, the motor three is installed on the lower side of the clamping bin, the output shaft of the motor three passes through the lower side wall of the clamping bin and is fixedly connected to the lower side of the rotating rod, the output shaft of the motor three coincides with the central axis of the rotating shaft, the input end of the motor three is electrically connected to the output end of the control switch group, the driving is stable and the clamping head is easy to replace.

[0009] Furthermore, the clamping mechanism also includes a quarter gear and a limit block. A quarter gear is provided in the middle part of the outer arc surface of the rotating column, and the two quarter gears are arranged in cooperation. The lower side wall of the front guide frame and the upper side wall of the rear guide frame are provided with rack plates, and the two rack plates are staggered left and right. The quarter gears are installed in cooperation with the rack plate adjacent to the left. A limit block is provided in the middle part of the outer arc surface of the rotating column, and the upper and lower inner walls of the guide frame are provided with limit strips. The limit blocks are arranged in cooperation with the laterally adjacent limit strips, so that the clamping bin drives the sign to rotate, which is convenient for cleaning the surface of the sign.

[0010] Furthermore, the cleaning mechanism also includes a hot air blower and an adjustment rack. Adjustment racks are provided in the middle of the front and rear inner walls of the cleaning chamber, and adjustment columns are provided on the front and rear sides of the drying head. The adjustment columns are arranged in cooperation with the vertically adjacent adjustment racks. A hot air blower is installed on the upper side wall of the cleaning chamber, and the air outlet of the hot air blower is connected to the drying head through a telescopic hose. The input end of the hot air blower is electrically connected to the output end of the control switch group for drying the surface of the sign.

[0011] Furthermore, the cleaning mechanism also includes a water tank and a water pump. The spray head is fixedly connected to the front and rear inner walls of the cleaning chamber through an installation shaft. A water tank is provided at the right end of the upper side wall of the base. The water tank and the spray head are connected by a water pipe. The rear end of the water pipe is located on the outer rear side of the cleaning chamber. A water pump is connected in series in the middle of the rear end of the water pipe. The input end of the water pump is electrically connected to the output end of the control switch group to facilitate cleaning the surface of the sign.

[0012] Furthermore, a screw rod 1 is rotatably connected between the upper and lower inner walls of the installation bin, the rear end of the screen frame is threadedly connected to the screw rod 1, a motor 1 is installed on the upper side of the installation bin, the output shaft of the motor 1 is fixedly connected to the center of the upper end surface of the screw rod 1, and the input end of the motor 1 is electrically connected to the output end of the control switch group for stable drive.

[0013] Furthermore, the inner wall of the middle rear side of the screen frame is rotatably connected to a symmetrically distributed synchronous pulley 1, and the two synchronous pulleys are connected through a synchronous belt 1 transmission. A motor 2 is installed on the middle rear side of the screen frame, and the output shaft of the motor 2 is fixedly connected to the center of the rear side of the synchronous pulley 1 on the right side. A printing frame is fixedly connected to the middle of the synchronous belt 1, and the rear end of the printing frame is slidingly connected to the middle front side wall of the screen frame. An electric cylinder is installed on the upper side of the front end of the printing frame, and the telescopic end of the electric cylinder passes through the front end of the printing frame. A scraper is provided at the telescopic end of the electric cylinder. The input ends of the electric cylinder and the motor 2 are electrically connected to the output end of the control switch group, which is mainly used for printing on the surface of the sign.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. Before printing on the surface of the sign, it is necessary to ensure the stability of the sign. The motor drives the rotating rod to drive the mounting block to slide in the guide groove to achieve the clamping of the sign by the clamping head. The clamping head can be replaced simply and quickly. It can be replaced by pulling out the pin. It can be adapted to signboards of different specifications, greatly improving the applicability of the signboard surface printing device to various types of signboards.

[0015] 2. Before the nameplate is printed, the surface printing device of the nameplate uses motor 4 to drive screw 2 to rotate and move the clamping bin. During the movement, the front quarter gear cooperates with the rack plate to drive the nameplate to rotate and tilt. At this time, the water pump draws water from the water tank and rinses the surface of the nameplate through the spray head to remove dust. Then, the rear quarter gear cooperates with the rack plate to drive the nameplate to rotate horizontally, and then the limit block and the limit bar cooperate to keep the nameplate horizontal. Then the hot air blower works to dry the residual moisture on the nameplate. The surface of the nameplate after cleaning is relatively clean, so that the ink can fully contact the surface of the nameplate, ensuring that the ink adheres firmly and evenly, thereby improving the clarity and stability of the printed pattern and avoiding problems such as blurred patterns and fading.

[0016] 3. At the same time, by changing the internal position of the adjustment column in the adjustment frame, the height of the drying head can be adjusted, which can ensure that no matter what the specifications of the sign are, the drying head can be in the best drying position. For thicker signboards, the drying head can be raised to ensure that the hot air flow can evenly cover the surface of the signboard. For thinner signboards, the drying head can be lowered to make the heat more concentrated and improve the drying efficiency, thereby meeting the drying needs of various signboards and improving the cleaning and drying effect and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic structural diagram of a partial cross-section of the front side of the present invention; Figure 3 It is a schematic diagram of the structure enlarged at A of the present invention; Figure 4 It is a schematic diagram of the structure enlarged at B of the present invention; Figure 5 It is a schematic diagram of the structure of a part of the clamping mechanism of the present invention; Figure 6 It is a structural schematic diagram of a partial explosion of the clamping mechanism of the present invention; Figure 7 It is a structural schematic diagram of a cross-sectional plane of the right side of the clamping bin of the present invention; Figure 8 It is a schematic structural diagram of the side section view of the installation bin of the present invention; Fig. 9 It is a schematic structural diagram of the front side section of the cleaning chamber of the present invention; Fig.10 It is a schematic diagram of the structure enlarged at C of the present invention.

[0018] In the figure: 1 base, 2 clamping mechanism, 201 mobile frame, 202 rotating column, 203 clamping bin, 204 mounting block, 205 clamping head, 206 socket, 207 latch, 208 rotating rod, 209 pull slot, 210 motor three, 211 quarter gear, 212 limit block, 213 guide slide, 3 cleaning mechanism, 31 cleaning bin, 32 hot air blower, 33 drying head, 331 adjustment column, 34 adjustment frame, 35 Sink, 36 telescopic hose, 37 water pipe, 38 sprinkler head, 39 water pump, 4 guide rail frame, 5 rack plate, 6 motor four, 7 limit strip, 8 slide, 9 installation bin, 10 screen frame, 11 printing frame, 12 scraper, 13 screw rod one, 14 motor one, 15 synchronous pulley one, 16 synchronous belt one, 17 motor two, 18 electric cylinder, 19 control switch group, 20 screw rod two, 21 synchronous pulley two, 22 synchronous belt two, 23 pin shaft. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-10The present embodiment provides a surface printing device for a signboard, comprising a base 1, a control switch group 19 is provided at the front end of the base 1, an input end of the control switch group 19 is electrically connected to an external power supply, a mounting chamber 9 is provided on the upper side of the base 1, a screen frame 10 is slidably connected to the front side wall of the mounting chamber 9, an adjustable scraper 12 is provided in the middle of the screen frame 10, a screw rod 13 is rotatably connected between the upper and lower inner walls of the mounting chamber 9, a rear end of the screen frame 10 is threadedly connected to the screw rod 13, a motor 14 is installed on the upper side of the mounting chamber 9, an output shaft of the motor 14 is fixedly connected to the center of the upper end face of the screw rod 13, an input end of the motor 14 is electrically connected to the output end of the control switch group 19, and a synchronous pulley 1 symmetrically distributed is rotatably connected to the inner wall of the rear side of the middle part of the screen frame 10 5. Two synchronous pulleys 15 are connected through synchronous belt 16. A motor 2 17 is installed on the middle rear side of the screen frame 10. The output shaft of the motor 2 17 is fixedly connected to the center of the rear side of the synchronous pulley 15 on the right. The middle of the synchronous belt 16 is fixedly connected to the printing frame 11. The rear end of the printing frame 11 is slidably connected to the middle front side wall of the screen frame 10. An electric cylinder 18 is installed on the upper side of the front end of the printing frame 11. The telescopic end of the electric cylinder 18 passes through the front end of the printing frame 11. A scraper 12 is provided at the telescopic end of the electric cylinder 18. The input ends of the electric cylinder 18 and the motor 2 17 are electrically connected to the output end of the control switch group 19. The upper side of the base 1 is provided with symmetrically distributed guide rail frames 4. The clamping head 205 in the clamping state drives the identification plate to continue to move to the left. When arriving at the bottom of the screen frame 10, the worker fixes the screen to the inside of the screen frame 10, and then operates the control switch group 19 to stop the operation of the motor 4 6, the screw 20 stops rotating, and then the moving frame 201 stops moving, the clamping head 205 stops shifting, and the identification plate keeps the current position, and then operates the control switch group 19 to operate the motor 14, and the output shaft of the motor 14 drives the screw 13 to rotate. With the thread cooperation of the screw 13, the screen frame 10 drives the screen to move downward, and the printing frame 11 also moves downward synchronously. When the screen fits the surface of the identification plate, pour the ink into the screen, and then operate the control switch group 19 to operate the electric cylinder 18, and the telescopic end of the electric cylinder 18 pushes the scraper 12 downward until the lower end of the scraper 12 contacts the screen, and then operate The control switch group 19 makes the motor 17 run, and the output shaft of the motor 17 drives the synchronous pulley 15 on the right to rotate, and then drives the synchronous belt 16 to rotate (under the transmission action of the synchronous belt 16, the synchronous pulley 15 on the left also rotates synchronously), and then drives the scraper 12 to move through the printing frame 11, and through the extrusion of the scraper 12, the ink is transferred to the surface of the sign through the mesh of the graphic part of the screen (the mesh of the graphic part on the screen is transparent, while the mesh of the non-graphic part is sealed), then the worker controls the control switch group 19 to make the motor 14 run, and the output shaft of the motor 14 drives the screw 13 to rotate, and under the thread cooperation of the screw 13, the screen frame 10 drives the screen to move upward, and the worker removes the printed sign.It is convenient to print identification plates, including a clamping mechanism 2 and a cleaning mechanism 3.

[0021] The clamping mechanism 2 includes a rotating column 202, a clamping bin 203 and a clamping head 205. The interior of the guide rail frame 4 is equipped with a rotating column 202. A clamping bin 203 is provided between the two rotating columns 202. The upper side of the clamping bin 203 is slidably connected with a replaceable clamping head 205. The clamping mechanism 2 also includes a moving frame 201. A mounting plate is provided on the right side of the top wall of the base 1. A symmetrically distributed screw rod 20 is rotatably connected between the mounting plate and the left inner wall of the base 1. The right end of the screw rod 20 is threadedly connected to the moving frame 201. The upper side wall of the base 1 is provided with symmetrically distributed slide grooves 8. The upper ends of the moving frames 201 are slidably connected to the slide grooves 8 adjacent to the upper side. The upper ends of the moving frames 201 are located inside the guide rail frame 4 adjacent to the upper side. The rotating column 20 2 are both rotatably connected to the upper end of the laterally adjacent moving frame 201, a motor 46 is installed on the right side of the mounting plate, the output shaft of the motor 46 is fixedly connected to the center of the right end face of the front screw rod 20, the input end of the motor 46 is electrically connected to the output end of the control switch group 19, the left end outer arc surface of the screw rod 20 is fixedly sleeved with a synchronous pulley 21, and the two synchronous pulleys 21 are connected through the synchronous belt 22. The clamping mechanism 2 also includes a mounting block 204, a socket 206, a latch 207, a rotating rod 208, a pull groove 209 and a guide groove 213. The front and rear ends of the upper side surface of the clamping bin 203 are provided with guide grooves 213, the interior of the guide grooves 213 is slidably connected to the mounting block 204, and the interior of the mounting block 204 is plugged with a clamping The head 205, the mounting block 204 and the end of the clamping head 205 away from the center of the clamping bin 203 are provided with a socket 206, the central axes of the laterally adjacent sockets 206 coincide, and a latch 207 is inserted inside the laterally adjacent sockets 206, and the lower side of the mounting block 204 is provided with a pin shaft 23, and the top wall of the clamping bin 203 is rotatably connected to a rotating rod 208 through a rotating shaft, and the front and rear ends of the rotating rod 208 are provided with a shifting groove 209, and the lower ends of the pin shaft 23 are located inside the adjacent shifting groove 209 on the lower side. The clamping mechanism 2 also includes a motor three 210, and the motor three 210 is installed on the lower side of the clamping bin 203. The output shaft of the motor three 210 passes through the lower side wall of the clamping bin 203 and is fixedly connected to the lower side of the rotating rod 208. The output shaft of 10 coincides with the central axis of the rotating shaft, the input end of the motor three 210 is electrically connected to the output end of the control switch group 19, the clamping mechanism 2 also includes a quarter gear 211 and a limit block 212, and a quarter gear 211 is provided in the middle of the outer arc surface of the rotating column 202, and the two quarter gears 211 are arranged in coordination (the two quarter gears 211 are only arranged in different directions. In the initial state, the teeth of the front quarter gear 211 face the lower left, and the teeth of the rear quarter gear 211 face the upper right), the lower side wall of the front guide frame 4 and the upper side wall of the rear guide frame 4 are both provided with a rack plate 5, the two rack plates 5 are staggered left and right, and the quarter gears 211 are installed in coordination with the rack plate 5 adjacent to the left.A limit block 212 is provided in the middle of the outer arc surface of the rotating column 202, and a limit strip 7 is provided on the upper and lower inner walls of the guide frame 4. The limit blocks 212 are arranged in coordination with the limit strips 7 adjacent to each other in the transverse direction (the rightmost end of the limit strip 7 is provided with an arc chamfer. When any limit block 212 enters between two limit strips 7 adjacent to each other in the longitudinal direction, the upper and lower side surfaces of the limit block 212 contact the side surfaces of the adjacent limit strips 7). The worker places the identification plate to be printed on the surface between the two clamping heads 205, and then operates the control switch group 19 to operate the motor three 210. The output shaft of the motor three 210 drives the rotating rod 208 to rotate. At this time, the toggle grooves at both ends of the rotating rod 208 drive the front and rear two mounting blocks 204 to move between the adjacent pin shafts 23. The guide slide groove 213 slides at the temple (the two mounting blocks 204 approach at the same time), thereby driving the clamping head 205 to clamp the identification plate. At the same time, the worker can replace different clamping heads 205 according to the specific situation. He only needs to pull out the two pins 207, then pull the clamping head 205 upward to disengage from the adjacent mounting block 204, replace another clamping head 205, reinsert the new clamping head 205 into the mounting block 204, and then insert the two pins 207 into the new clamping head 205 and the corresponding mounting block 204. The effect of replacing the clamping head 205 is completed, which is convenient for clamping the identification plate that needs to be printed on the surface. At the same time, different clamping heads 205 can be replaced according to the specific situation to adapt to different identification plates.

[0022] The cleaning mechanism 3 includes a cleaning chamber 31, a drying head 33 and a spray head 38. The cleaning chamber 31 is arranged at the right end of the upper side of the base 1. An adjustable drying head 33 is arranged inside the cleaning chamber 31. A spray head 38 is arranged inside the cleaning chamber 31. The cleaning mechanism 3 also includes a hot air blower 32 and an adjustment frame 34. Adjustment frames 34 are arranged in the middle of the front and rear inner walls of the cleaning chamber 31. Adjustment columns 331 are arranged on the front and rear sides of the drying head 33. The adjustment columns 331 are arranged in coordination with the vertically adjacent adjustment frames 34 (an adjustment door is arranged on the left side wall of the cleaning chamber 31. A plurality of horizontal slides and a vertical slide are arranged in the middle of the adjustment frame 34. The plurality of horizontal slides are connected to the vertical slide on the same adjustment frame 34. The adjustment column 331 can be connected to these horizontal slides and The upper side wall of the cleaning chamber 31 is provided with a hot air blower 32, and the air outlet of the hot air blower 32 is connected to the drying head 33 through a telescopic hose 36, and the input end of the hot air blower 32 is electrically connected to the output end of the control switch group 19. The cleaning mechanism 3 also includes a water tank 35 and a water pump 39. The spray head 38 is fixedly connected to the front and rear inner walls of the cleaning chamber 31 through a mounting shaft. A water tank 35 is provided at the right end of the upper side wall of the base 1, and the water tank 35 and the spray head 38 are connected through a water pipe 37. The rear end of the water pipe 37 is located on the outer rear side of the cleaning chamber 31. A water pump 39 is connected in series in the middle of the rear end of the water pipe 37. The input end of the water pump 39 is electrically connected to the output end of the control switch group 19. Then the worker operates the control switch group 19 to operate the motor four 6, and the motor four The output shaft of 6 drives the front screw rod 20 to rotate, and then drives the front synchronous pulley 21 to rotate. Under the transmission action of the synchronous belt 22, the rear synchronous pulley 21 drives the rear screw rod 20 to rotate synchronously. At this time, under the thread cooperation of the two screw rods 20, the two moving frames 201 drive the clamping bin 203 to move leftward through the rotating column 202 (in this process, the moving frame 201 always slides inside the adjacent slide groove 8), thereby driving the clamping head 205 in the clamping state to move synchronously, and the identification plate moves accordingly. When the clamping bin 203 moves to the left, after the front quarter gear 211 contacts and meshes with the front rack plate 5, the rotating column 202 drives the clamping bin 203 to rotate clockwise, and the clamping bin 203 moves to the left. The clamping head 205 in the clamping state drives the sign to rotate and tilt 45 degrees (at this time, the quarter gear 211 on the rear side faces the upper left, waiting to be meshed with the rack plate 5 on the rear side). Then the worker operates the control switch group 19 to operate the water pump 39. The water pump 39 draws the water poured in advance by the worker in the water tank 35 through the water pipe 37, and sprays it through the sprinkler head 38 to act on the surface of the sign, washing away the dust on the surface of the sign. The washed water will fall into the water tank 35 again. When the quarter gear 211 on the rear side contacts and meshes with the rack plate 5 on the rear side, the rotating column 202 drives the clamping chamber 203 to rotate counterclockwise, and then drives the sign to rotate to the initial horizontal state through the clamping head 205 in the clamping state (in this process,After the quarter gear 211 contacts the teeth of the adjacent rack plate 5, it meshes and rotates. Then, after the teeth of the quarter gear 211 move away from the teeth of the adjacent rack plate 5, the quarter gear 211 stops meshing with the adjacent rack plate 5, thereby stopping rotation). At this time, the limit block 212 enters between the two adjacent limit bars 7 to keep the rotating column 202 from rotating, thereby ensuring the horizontal state of the sign. Then the worker operates the control switch group 19 to operate the hot air blower 32. The impeller inside the hot air blower 32 rotates at a high speed. The rotation of the impeller causes air to be sucked into the hot air blower 32 from the air inlet of the hot air blower 32. The sucked air passes around the heating wire of the hot air blower 32. After absorbing heat, the temperature rises, and then it circulates through the telescopic hose 36 and blows out from the drying head 33 to dry the residual moisture on the sign, making it easier to clean the surface of the sign. The worker can also open the adjustment door, pull the drying head 33 backward, and slide the adjustment column 331 out of the current horizontal chute. Then the worker adjusts the height of the drying head 33 (the adjustment column 331 slides inside the vertical chute), and then pushes the adjustment column 331 into another horizontal chute (the longitudinal position of the horizontal chute is different, and the height of the drying head 33 is adjusted by changing the adjustment column 331 so that it is inside the horizontal chute at different heights. During this process, the telescopic hose 36 is continuously extended and retracted).

[0023] The working principle of the surface printing device for the identification plate provided by the present invention is as follows: first, the worker puts the identification plate to be surface printed between the two clamping heads 205, and then operates the control switch group 19 to operate the motor three 210. The output shaft of the motor three 210 drives the rotating rod 208 to rotate. At this time, the toggling grooves at both ends of the rotating rod 208 drive the front and rear two mounting blocks 204 to slide in the adjacent guide grooves 213 (the two mounting blocks 204 are close to each other at the same time), thereby driving the clamping head 205 to clamp the identification plate. At the same time, the worker can replace different clamping heads 205 according to the specific situation. He only needs to pull out the two pins 207, and then pull the clamping head 205 upward to disengage from the adjacent mounting block 204, replace another clamping head 205, and then The new clamping head 205 is reinserted into the mounting block 204, and then the two pins 207 are inserted into the new clamping head 205 and the corresponding socket 206 of the mounting block 204, thereby completing the effect of replacing the clamping head 205. Then the worker operates the control switch group 19 to operate the motor four 6. The output shaft of the motor four 6 drives the front screw rod two 20 to rotate, and then drives the front synchronous pulley two 21 to rotate. Under the transmission action of the synchronous belt two 22, the rear synchronous pulley two 21 drives the rear screw rod two 20 to rotate synchronously. At this time, under the thread cooperation of the two screw rods two 20, the two moving frames 201 drive the clamping bin 203 to move to the left through the rotating column 202 (in this process, the moving frame 201 always slides inside the adjacent slide groove 8), thereby driving the positive The clamping head 205 in the clamping state moves synchronously, and the sign moves with it. When the clamping bin 203 moves to the left, when the front quarter gear 211 contacts and meshes with the front rack plate 5, the rotating column 202 drives the clamping bin 203 to rotate clockwise, and then drives the sign to rotate and tilt 45 degrees through the clamping head 205 in the clamping state (at this time, the rear quarter gear 211 faces the upper left, waiting to mesh with the rear rack plate 5). Then the worker operates the control switch group 19 to operate the water pump 39. The water pump 39 draws the water poured in advance by the worker in the water tank 35 through the water pipe 37, and sprays it through the sprinkler head 38 to act on the surface of the sign, washing away the dust on the surface of the sign, and the washed water will fall into the water tank again. 35. When the quarter gear 211 on the rear side contacts and meshes with the rack plate 5 on the rear side, the rotating column 202 drives the clamping bin 203 to rotate counterclockwise, and then drives the identification plate to rotate to the initial horizontal state through the clamping head 205 in the clamping state (in this process, the quarter gear 211 contacts and meshes with the teeth of the adjacent rack plate 5, and then the teeth of the quarter gear 211 move away from the teeth of the adjacent rack plate 5, and the quarter gear 211 stops meshing with the adjacent rack plate 5, thereby stopping rotation). At this time, the limit block 212 enters between the two adjacent limit bars 7 to keep the rotating column 202 from rotating, thereby ensuring the horizontal state of the identification plate. Then the worker operates the control switch group 19 to operate the hot air blower 32.The impeller inside the hot air blower 32 rotates at a high speed. The rotation of the impeller causes air to be sucked into the hot air blower 32 from the air inlet. The sucked air passes around the heating wire of the hot air blower 32, absorbs heat and increases in temperature. Then it circulates through the telescopic hose 36 and is blown out from the drying head 33 to dry the moisture remaining on the sign. The worker can also open the adjustment door and pull the drying head 33 backward to slide the adjustment column 331 out of the current horizontal slot. Then the worker adjusts the height of the drying head 33 (the adjustment column 331 slides in the vertical slot), and then pushes the adjustment column 331 into another horizontal slot. The height of the drying head 33 is adjusted by changing the adjusting column 331 so that it is located inside the horizontal chute at different heights. During this process, the telescopic hose 36 is continuously extended and retracted. At this time, the clamping head 205 in the clamping state drives the identification plate to continue to move to the left. When it comes to the bottom of the screen frame 10, the worker fixes the screen to the inside of the screen frame 10, and then operates the control switch group 19 to stop the motor 4 6 and the screw 20 to stop rotating. Then the moving frame 201 stops moving, the clamping head 205 stops moving, and the identification plate keeps the current position. The control switch group 19 makes the motor 14 run, and the output shaft of the motor 14 drives the screw rod 13 to rotate. Under the thread cooperation of the screw rod 13, the screen frame 10 drives the screen to move downward, and the printing frame 11 also moves downward synchronously. When the screen fits the surface of the identification plate, the ink is poured into the screen. Then the control switch group 19 is operated to operate the electric cylinder 18. The telescopic end of the electric cylinder 18 pushes the scraper 12 downward until the lower end of the scraper 12 contacts the screen. Then the control switch group 19 is operated to operate the motor 2 17. The output shaft of the motor 2 17 drives the synchronous pulley 15 on the right to rotate, thereby driving the synchronous belt 1 6 rotates (under the transmission of synchronous belt 16, the synchronous belt pulley 15 on the left side also rotates synchronously) and then drives the scraper 12 to move through the printing frame 11. Through the extrusion of the scraper 12, the ink is transferred to the surface of the sign through the mesh of the graphic part of the screen (the mesh of the graphic part on the screen is transparent, while the mesh of the non-graphic part is sealed). Then the worker controls the control switch group 19 to make the motor 14 run, and the output shaft of the motor 14 drives the screw 13 to rotate. Under the thread cooperation of the screw 13, the screen frame 10 drives the screen to move upward, and the worker removes the printed sign.

[0024] It is worth noting that the motor three 210 disclosed in the above embodiments can use model Y80M1-2, the hot air blower 32 can use a traditional hot air blower with a built-in heating wire, the motor four 6, the motor one 14 and the motor two 17 can all use model YE3 series motors, the electric cylinder 18 can use model FY020, and the control switch group 19 is provided with control buttons corresponding to the motor three 210, the hot air blower 32, the motor four 6, the motor one 14, the electric cylinder 18 and the motor two 17 for controlling their switches.

[0025] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A device for printing on the surface of a signboard, comprising a base (1), a mounting chamber (9) being provided on the upper side of the base (1), a screen frame (10) being slidably connected to the front side wall of the mounting chamber (9), an adjustable scraper (12) being provided in the middle of the screen frame (10), and symmetrically distributed guide rails (4) being provided on the upper side of the base (1), characterized in that: It comprises a clamping mechanism (2) and a cleaning mechanism (3); The clamping mechanism (2) comprises a rotating column (202), a clamping bin (203) and a clamping head (205); the interior of the guide rail frame (4) is provided with a rotating column (202); a clamping bin (203) is provided between the two rotating columns (202); and a replaceable clamping head (205) is slidably connected to the upper side of the clamping bin (203); The cleaning mechanism (3) comprises a cleaning chamber (31), a drying head (33) and a spray head (38); the cleaning chamber (31) is arranged at the right end of the upper side surface of the base (1); an adjustable drying head (33) is arranged inside the cleaning chamber (31); and a spray head (38) is arranged inside the cleaning chamber (31).

2. The device for printing the surface of a sign according to claim 1, characterized in that: A control switch group (19) is provided at the front end of the base (1), and an input end of the control switch group (19) is electrically connected to an external power source.

3. The device for printing the surface of a sign according to claim 2, characterized in that: The clamping mechanism (2) further comprises a movable frame (201), a mounting plate being provided on the right side of the top wall of the base (1), a symmetrically distributed screw rod (20) being rotatably connected between the mounting plate and the left inner wall of the base (1), the right end of each screw rod (20) being threadedly connected to the movable frame (201), a symmetrically distributed slide groove (8) being provided on the upper side wall of the base (1), the upper end of each movable frame (201) being slidably connected to the slide groove (8) adjacent to the upper side, the upper end of each movable frame (201) being located inside the guide rail frame (4) adjacent to the upper side, and the rotating column (202) being rotatably connected to the upper end of each laterally adjacent movable frame (201).

4. The device for printing the surface of a sign according to claim 3, characterized in that: A motor four (6) is mounted on the right side of the mounting plate, the output shaft of the motor four (6) is fixedly connected to the center of the right end face of the front screw rod two (20), the input end of the motor four (6) is electrically connected to the output end of the control switch group (19), the outer arc surface of the left end of the screw rod two (20) is fixedly sleeved with a synchronous pulley two (21), and the two synchronous pulleys two (21) are connected through a synchronous belt two (22).

5. The device for printing the surface of a sign according to claim 2, characterized in that: The clamping mechanism (2) further comprises a mounting block (204), a socket (206), a latch (207), a rotating rod (208), a shifting slot (209), a guide slot (213) and a motor (210). The front and rear ends of the upper side surface of the clamping bin (203) are provided with guide slots (213). The interior of the guide slots (213) is slidably connected with the mounting block (204). The interior of the mounting block (204) is plugged with a clamping head (205). The mounting block (204) and the clamping head (205) are both provided with sockets (206) at one end away from the center of the clamping bin (203). The central axes of the laterally adjacent sockets (206) are coincident. The interiors of the laterally adjacent sockets (206) are plugged with a clamping head (205). A latch (207) is connected, the lower side surface of the mounting block (204) is provided with a pin shaft (23), the top wall of the clamping bin (203) is rotatably connected to a rotating rod (208) via a rotating shaft, the front and rear ends of the rotating rod (208) are provided with shifting grooves (209), the lower ends of the pin shaft (23) are located inside the adjacent shifting grooves (209) on the lower side, the motor three (210) is installed on the lower side surface of the clamping bin (203), the output shaft of the motor three (210) passes through the lower side wall of the clamping bin (203) and is fixedly connected to the lower side surface of the rotating rod (208), the output shaft of the motor three (210) coincides with the central axis of the rotating shaft, and the input end of the motor three (210) is electrically connected to the output end of the control switch group (19).

6. The device for printing the surface of a sign according to claim 1, characterized in that: The clamping mechanism (2) further comprises a quarter gear (211) and a stop block (212); a quarter gear (211) is provided in the middle of the outer arc surface of the rotating column (202); two quarter gears (211) are arranged in coordination; a rack plate (5) is provided on the lower side wall of the front guide rail frame (4) and the upper side wall of the rear guide rail frame (4); the two rack plates (5) are arranged in a left-right staggered manner; the quarter gear (211) is installed in coordination with the rack plate (5) adjacent to the left; a stop block (212) is provided in the middle of the outer arc surface of the rotating column (202); stop bars (7) are provided on the upper and lower inner walls of the guide rail frame (4); and the stop blocks (212) are arranged in coordination with the stop bars (7) adjacent to the latter.

7. The device for printing the surface of a sign according to claim 2, characterized in that: The cleaning mechanism (3) further comprises a hot air blower (32) and an adjustment frame (34); the adjustment frame (34) is provided at the middle of the front and rear inner walls of the cleaning chamber (31); the front and rear side surfaces of the drying head (33) are provided with adjustment columns (331); the adjustment columns (331) are arranged in coordination with the vertically adjacent adjustment frames (34); the upper side wall of the cleaning chamber (31) is provided with a hot air blower (32); the air outlet of the hot air blower (32) is connected to the drying head (33) via a telescopic hose (36); and the input end of the hot air blower (32) is electrically connected to the output end of the control switch group (19).

8. The device for printing the surface of a sign according to claim 2, characterized in that: The cleaning mechanism (3) further comprises a water tank (35) and a water pump (39); the spray head (38) is fixedly connected to the front and rear inner walls of the cleaning chamber (31) via a mounting shaft; a water tank (35) is provided at the right end of the upper side wall of the base (1); the water tank (35) and the spray head (38) are connected via a water pipe (37); the rear end of the water pipe (37) is located at the rear side of the cleaning chamber (31); a water pump (39) is connected in series at the middle of the rear end of the water pipe (37); and an input end of the water pump (39) is electrically connected to an output end of the control switch group (19).

9. The device for printing the surface of a sign according to claim 2, characterized in that: A screw rod (13) is rotatably connected between the upper and lower inner walls of the installation bin (9), the rear end of the screen frame (10) is threadedly connected to the screw rod (13), a motor (14) is installed on the upper side of the installation bin (9), the output shaft of the motor (14) is fixedly connected to the center of the upper end surface of the screw rod (13), and the input end of the motor (14) is electrically connected to the output end of the control switch group (19).

10. The device for printing the surface of a sign according to claim 2, characterized in that: The inner wall of the middle rear side of the screen frame (10) is rotatably connected to a synchronous pulley (15) which is symmetrically distributed. The two synchronous pulleys (15) are connected by a synchronous belt (16). A motor (17) is installed on the middle rear side of the screen frame (10). The output shaft of the motor (17) is fixedly connected to the center of the rear side of the right synchronous pulley (15). The middle of the synchronous belt (16) is fixedly connected to a printing frame (11). The rear end of the printing frame (11) is slidably connected to the middle front side wall of the screen frame (10). An electric cylinder (18) is installed on the upper side of the front end of the printing frame (11). The telescopic end of the electric cylinder (18) passes through the front end of the printing frame (11). A scraper (12) is provided at the telescopic end of the electric cylinder (18). The input ends of the electric cylinder (18) and the motor (17) are both electrically connected to the output end of the control switch group (19).

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