A special detection device for flexographic printing plate

Abstract

The present application relates to the technical field of printing flexo plate, and relates to a special detection device for flexo plate, which comprises a rack, a flatness detection unit, a storage unit and a definition detection unit, the rack is provided with a first detection station and a second detection station on the workbench surface, a feeding structure for conveying the flexo plate is arranged on the rack, the storage unit comprises a storage plate, a work station groove for placing the flexo plate is formed in the end surface of the storage plate, the flatness detection unit comprises a laser emitter and a signal receiver arranged on the first detection station, the output end and the input end of the laser emitter and the signal receiver are on the same horizontal plane, the definition detection unit comprises a transfer printing assembly and an inking assembly for detecting the flexo plate placed on the second detection station, the present application has reasonable and simple structure, high practicability, can realize the detection of the flatness and the definition of the flexo plate on the same device, and is cheap in cost.

Description

Technical Field

[0001] This invention relates to the technical field of flexographic printing plates, and more specifically, to a dedicated inspection device for flexographic plates. Background Technology

[0002] After the flexographic printing plate is manufactured and formed, it needs to be tested for flatness and clarity. Currently, the testing equipment is separate, meaning that after testing, the flexographic printing plate needs to be manually sent to the corresponding testing equipment, resulting in very low testing efficiency. Moreover, the existing flatness and clarity testing equipment is expensive, and new alternatives are needed. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a special testing device for flexographic printing plates that is reasonably simple in structure, highly practical, can detect the flatness and clarity of flexographic printing plates on the same device, and is inexpensive.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A dedicated flexographic printing inspection device includes a frame, a flatness inspection unit, a storage unit, and a sharpness inspection unit. The frame has a first inspection station and a second inspection station on its worktable. A feeding structure for transporting the flexible plate is also provided on the frame. The storage unit includes a storage board with a slot on its end face for placing the flexographic plate. The flatness detection unit includes a laser emitter and a signal receiver placed at the first detection station. The output and input terminals of the laser emitter and the signal receiver are on the same horizontal plane. The clarity detection unit includes a printing component and an inking component that are placed on the second detection station for flexographic detection.

[0005] The present invention is further configured such that: the feeding structure includes a slide rail placed on the frame, a slide block slidably connected to the slide rail, a magnetic chuck movably connected to the slide block, a motor and a lead screw assembly fixed on the frame, and the output end of the motor is connected to the lead screw assembly. The frame is also equipped with a slide rod, on which a movable seat is slidably connected. A hydraulic lifting rod is mounted on the movable seat, passing through the slide rod and connecting to a magnetic chuck. The slide block is connected to the lead screw assembly in the middle, and has sliders on both sides that are slidably connected to the slide rail.

[0006] The invention is further configured such that: the first detection station is a groove formed on the workbench surface, the bottom of the storage plate extends into the groove, and the storage plate is magnetic. The second testing station has a slotted cavity on the workbench, and an electric push rod is provided at the bottom of the slotted cavity. The output end of the electric push rod is connected to a top plate, which is used to abut against the bottom of the storage plate.

[0007] The present invention is further configured such that: the magnetic chuck includes a pressure plate and a lifting plate, the slide has a cavity for the lifting plate to move up and down, and the hydraulic lifting rod extends into the cavity; The end face of the pressure plate is provided with a boss for flattening the flexible plate. An electromagnet is provided around the boss, and a wire is connected to the electromagnet. The wire is electrically connected to the power supply.

[0008] The present invention is further configured such that the rubbing assembly includes a stand, a rubbing plate, an electric lifting rod, a turntable, and a second motor. The platform is equipped with a laser scanner. The output end of the electric lifting rod is connected to the rubbing plate, and the end faces of the rubbing piece and the rubbing plate are detachably connected. The end of the electric lifting rod is connected to a rotating shaft, which is rotatably connected to the turntable. The output end of the second motor is connected to a driving gear, and a driven gear is provided on the outer peripheral wall of the rotating shaft. The driving gear and the driven gear mesh so that the second motor drives the printing plate to rotate between the stand and the second inspection station.

[0009] The present invention is further configured such that: the inking assembly includes a bracket, a roller, a guide rod, and a third motor; the output end of the third motor is connected to a second lead screw assembly; one side of the bracket is movably connected to the second lead screw assembly, and the other side is slidably connected to the guide rod; the roller and the bracket are rotatably connected. A brush sleeve is fitted onto the roller, and a box for injecting ink into the brush sleeve is provided on the bracket. An ink injection tube is connected to the box, and the box has an opening.

[0010] The present invention is further configured such that: the storage plate includes a main body and a frame, the work station slot is formed on the main body, and the frame has magnetic properties.

[0011] The present invention is further configured such that: the printing material includes a cloth body and a frame, the periphery of the cloth body and the frame are fixed, and the frame is magnetic. The printing plate has a slot for inserting a frame, and an electromagnet is installed in the slot. The end face of the printing plate has a protrusion that abuts against the fabric.

[0012] The invention is further configured such that: a dryer is provided on the outside of the frame, and the air outlet of the dryer is below the moving path of the slide plate.

[0013] Compared with the shortcomings of the prior art, the beneficial effects of the present invention are as follows: The flatness and clarity of the flexographic plate are detected by a single device. When the flexographic plate is sent for detection, the detection is fully automated through a feeding structure and a printing component.

[0014] The entire testing process operates on a simple logic and is inexpensive. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram in the first direction; Figure 2 This is a three-dimensional schematic diagram in the second direction; Figure 3 This is a three-dimensional schematic diagram of a third-party part; Figure 4 This is a top-down view; Figure 5 This is a schematic diagram of the magnetic chuck. Figure 6 This is a schematic diagram of the tracing plate.

[0016] Frame 1, Storage board 2, First inspection station 11, Second inspection station 12, Station slot 20, Slide rail 31, Motor 1 32, Lead screw assembly 1 33, Slide rod 34, Slide seat 35, Movable seat 36, Hydraulic lifting rod 4, Magnetic chuck 5, Pressure plate 51, Lifting plate 52, Electric push rod 6, Top plate 61, Stand 7, Printing plate 71, Electric lifting rod 72, Turntable 73, Motor 2 74, Printing part 8, Fabric 81, Frame 82, Support 91, Roller 92, Guide rod 93, Motor 3 94, Lead screw assembly 2 95, Laser emitter 10, Signal receiver 101, Laser scanner 102, Dryer 103. Implementation

[0017] Reference Figures 1 to 6 The embodiments of the present invention will be further described below.

[0018] The lead screw assembly 1 33 and lead screw assembly 2 95 mentioned below are ball screw slide modules, which include a lead screw and a slide that is movably connected to the lead screw. When the motor drives the lead screw to rotate, the slide will move on the lead screw.

[0019] This embodiment specifically includes a frame 1, a flatness detection unit, a storage unit, and a clarity detection unit.

[0020] The storage unit is a storage plate 2, which includes a main body and a frame 82. The main body has recessed workstation grooves 20, and the frame 82 is magnetic. The flexographic plate to be tested is placed in the workstation grooves 20. The size of the workstation grooves 20 is set according to the size of the flexographic plate, so the storage plate 2 is replaceable.

[0021] The worktable of frame 1 is provided with a first inspection station 11 and a second inspection station 12. The frame 1 is provided with a feeding structure for sending the storage plate 2 for storing the flexographic plate from the first inspection station 11 to the second inspection station 12.

[0022] The feeding structure includes a slide rail 31 fixed to the side wall of the frame 1, a motor 32, a lead screw assembly 33, and a slide rod 34. The output end of the motor 32 is connected to the lead screw assembly 33, and hollow slide blocks 35 are synchronously installed on the slide rod 34 and the lead screw assembly 33. The slide rail 31 has connecting blocks at both ends. The slide rail 31 is fixed to the frame 1 by screws through the connecting blocks, so that the slide rail 31 can be lifted away from the side parallel to the frame 1.

[0023] The slide block 35 and the slide rail 31 are connected by a slider with an opening at its bottom and the slide rail 31. When the motor drives the lead screw assembly 33 of the slide rail 31 to move, the slide block 35 reciprocates along the lead screw and slide bar 34.

[0024] A movable seat 36 is mounted on the slide rod 34. The movable seat 36 has a central hole through which the slide rod 34 passes. An electrically powered hydraulic lifting rod 4 is mounted on the movable seat 36. The output end of the hydraulic lifting rod 4 extends into the slide 35 and is connected to a magnetic chuck 5. The magnetic chuck 5 includes a pressure plate 51 and a lifting plate 52. The pressure plate 51 is parallel to the worktable surface of the frame 1, and the lifting plate 52 is vertically connected to the pressure plate 51. The two are integrally formed. The lifting plate 52 extends into the cavity of the slide 35 and is fixed to the output end of the hydraulic lifting rod 4. A boss 511 for flattening the flexible plate is provided on the end face of the pressure plate 51. An electromagnet 512 is embedded around the boss by slotting. A wire is connected to the electromagnet 512, and the wire is electrically connected to a power source. The reciprocating motion of the magnetic chuck 5 relative to the frame 1 is controlled by motor 32. The magnetic field generated by controlling whether the electromagnet on the pressure plate 51 is energized is used to attract the storage plate 2. With the drive of motor 32, the storage plate 2 with the flexographic plate to be tested is transported from the first testing station 11 to the second testing station 12.

[0025] The first inspection station 11 is a groove opened on the workbench, which is used to store the bottom of the plate 2.

[0026] The second inspection station 12 is a slotted cavity on the workbench. An electric push rod 6 is provided at the bottom of the slotted cavity. The output end of the electric push rod 6 is connected to a top plate 61. During processing, the top plate 61 is driven by the electric push rod 6 to rise and contact the bottom of the storage plate 2.

[0027] Flatness detection unit: includes a laser emitter 10 and a signal receiver 101 placed on corresponding sides of the first detection station 11. The output and input ends of the laser emitter 10 and the signal receiver 101 are on the same horizontal plane.

[0028] When the flexographic plate is placed on the storage plate 2, the printing end face of the flexographic plate will be higher than the depth of the station slot 20. The laser generator will emit a signal along the side of the flexographic plate to the signal receiver 101. When the signal receiver 101 receives the signal of the flatness of the end face of the flexographic plate, the detection is completed.

[0029] The clarity detection unit includes a printing component and an inking component that are placed on the second detection station 12 for flexographic detection.

[0030] The rubbing assembly includes a stand 7, a rubbing plate 71, an electric lifting rod 72, a turntable 73, a motor 74, and a rubbing piece 8.

[0031] A laser scanner 102 is installed on the surface of the stand 7.

[0032] The output end of the electric lifting rod 72 is connected to the expansion plate 71.

[0033] The printing piece 8 includes a cloth body 81 and a frame 82. The periphery of the cloth body 81 and the frame 82 are fixed together, and the frame 82 is magnetic. The printing plate has a slot for inserting the frame 82. An electromagnet is installed in the slot. The electromagnet is connected to a power source via a wire. By controlling the on and off of the electromagnet, the printing plate can attract, lift and transport the printing piece 8.

[0034] The end face of the printing plate 71 has a protrusion that abuts against the cloth body 81. The protrusion can open up the cloth body 81 to ensure that it keeps the end face flat and stable when in contact with the flexographic plate.

[0035] The bottom end of the electric lifting rod 72 is connected to a rotating shaft. A bearing is pre-embedded in the center of the turntable 73. The rotating shaft is connected to the bearing on the turntable 73. The output end of the second motor 74 is connected to a driving gear. A driven gear is provided on the outer peripheral wall of the rotating shaft. The driving gear and the driven gear mesh. When the rotating shaft is driven to rotate by the second motor 74, it rotates the electric lifting rod 72. At the same time, the printing plate 71 on the electric lifting rod 72 can rotate 360°. This enables the printing plate 71 to rotate between the platform 7 and the second inspection station 12.

[0036] A dryer 103 is also installed on the rotation path of the slide plate 71. The dryer 103 is located outside the frame 7, and the air outlet of the dryer 103 is below the moving path of the slide plate 71.

[0037] The inking assembly includes a bracket 91, a roller 92, a guide rod 93, and a motor 94. The output end of the motor 94 is connected to a lead screw assembly 95. One side of the bracket 91 is movably connected to the lead screw assembly 95, and the other side is slidably connected to the guide rod 93. The end of the roller 92 has a shaft, and there is a bearing on the bracket 91 for the shaft to connect to. When the roller 92 contacts the flexographic plate, the motor 94 controls the displacement of the bracket 91, and the ink on the roller 92 is brushed onto the flexographic plate. In order to ensure the strength and uniformity of the ink application on the flexographic plate, when the electric push rod 6 on the second detection station 12 pushes the storage plate 2 upward, the flexographic plate will be squeezed against the roller 92.

[0038] A brush sleeve for absorbing ink is fitted on the roller 92. The brush sleeve can be made of sponge. A box is installed on the bracket 91. The box contains ink. An ink injection tube is connected to the box. The end of the ink injection tube is close to the brush sleeve. The cross-section of the ink injection tube is conical. The ink in the box is dripped onto the brush sleeve through the ink injection tube and absorbed and stored by the brush sleeve. The box has an opening for easy pouring of ink.

[0039] Working principle: The flexible plate is placed on the storage plate 2, and then the storage plate 2 is placed on the first inspection station 11. The magnetic chuck 5 is controlled to descend, and the protrusion on its end face will squeeze the flexible plate, making it more flat and fit the storage plate 2. The magnetic chuck 5 is lifted, and after the laser emitter 10 and the signal receiver 101 cooperate to detect the flatness of the flexible plate, the data will be transmitted to the computer. The magnetic chuck 5 is powered on and generates magnetism, attracting the storage plate 2. After the magnetic chuck 5 is controlled to move to the second inspection station 12, the storage plate 2 is placed in the second inspection station 12. When the roller 92 with ink is controlled to move, it presses against the flexographic plate to apply ink. After inking, the printing plate 71 with the printing element 8 is controlled to rotate above the second inspection station 12. The printing plate 71 descends, and the cloth 81 on the printing element 8 presses against the flexographic plate, transferring the information on the flexographic plate onto the cloth 81. The printing plate 71 is then controlled to rotate above the dryer 103 to quickly dry the information on the cloth 81. The printing plate 71 is then reset above the stand 7 with the laser scanner 102. The laser scanner 102 scans the cloth 81 and transmits the information to the computer. Finally, the comparison information on the computer is used to obtain the inspection result of the flexographic plate.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any ordinary changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included within the protection scope of the present invention.

Claims

1. A special inspection device for flexographic printing plates, characterized in that: Includes a frame (1), a flatness detection unit, a storage unit, and a sharpness detection unit. The frame (1) has a first inspection station (11) and a second inspection station (12) on its worktable. The frame (1) is equipped with a feeding structure for transporting the flexible plate. The storage unit includes a storage plate (2), and a work station slot (20) for placing the flexible plate is provided on the end face of the storage plate (2). The flatness detection unit includes a laser emitter (10) and a signal receiver (101) placed on the first detection station (11). The output and input ends of the laser emitter (10) and the signal receiver (101) are on the same horizontal plane. The sharpness detection unit includes a printing assembly and an inking assembly that are placed on the second detection station (12) for flexographic printing detection. The rubbing assembly includes a stand (7), a rubbing plate (71), an electric lifting rod (72), a turntable (73), and a second motor (74). A laser scanner (102) is installed on the table surface of the stand (7). The output end of the electric lifting rod (72) is connected to the rubbing plate (71), and the end faces of the rubbing piece (8) and the rubbing plate (71) are detachably connected. The end of the electric lifting rod (72) is connected to a rotating shaft, which is rotatably connected to the turntable (73). The output end of the second motor (74) is connected to a driving gear, and a driven gear is provided on the outer peripheral wall of the rotating shaft. The driving gear and the driven gear mesh so that the second motor (74) drives the plate (71) to rotate between the platform (7) and the second inspection station (12). The rubbing (8) includes a cloth body (81) and a frame (82). The periphery of the cloth body (81) and the frame (82) are fixed together. The frame (82) is magnetic. The printing plate has a slot for inserting the frame (82), and an electromagnet is provided in the slot. The end face of the printing plate has a protrusion that abuts against the cloth (81).

2. The flexographic printing plate testing device according to claim 1, characterized in that: The feeding structure includes a slide rail (31) placed on the frame (1), a slide block (35) slidably connected to the slide rail (31), a magnetic chuck (5) movably connected to the slide block (35), a motor (32) fixed on the frame (1), and a lead screw assembly (33). The output end of the motor (32) is connected to the lead screw assembly (33). The frame (1) is also provided with a slide rod (34), and a movable seat (36) is slidably connected on the slide rod (34). A hydraulic lifting rod (4) is provided on the movable seat (36). The hydraulic lifting rod (4) passes through the slide seat (35) and connects to the magnetic chuck (5). The slide block (35) is connected to the lead screw assembly (33) in the middle, and the slide block (35) has sliders on both sides that are slidably connected to the slide rail (31).

3. The flexographic printing plate testing device according to claim 2, characterized in that: The first testing station (11) is a groove opened on the workbench surface. The bottom of the storage plate (2) extends into the groove. The storage plate (2) is magnetic. The second testing station (12) has a slot on the workbench, and an electric push rod (6) is provided at the bottom of the slot. The output end of the electric push rod (6) is connected to a top plate (61), which is used to abut against the bottom of the storage plate (2).

4. The flexographic printing plate testing device according to claim 2, characterized in that: The magnetic chuck (5) includes a pressure plate (51) and a lifting plate (52). The slide (35) has a cavity for the lifting plate (52) to move up and down. The hydraulic lifting rod (4) extends into the cavity. The end face of the pressure plate (51) is provided with a boss for flattening the flexible plate. An electromagnet is provided around the boss, and a wire is connected to the electromagnet. The wire is electrically connected to the power supply.

5. The flexographic printing plate testing device according to claim 2, characterized in that: The inking assembly includes a bracket (91), a roller (92), a guide rod (93), and a third motor (94). The output end of the third motor (94) is connected to a second lead screw assembly (95). One side of the bracket (91) is movably connected to the second lead screw assembly (95), and the other side is slidably connected to the guide rod (93). The roller (92) is rotatably connected to the bracket (91). A brush sleeve is fitted on the roller (92), and a box for injecting ink into the brush sleeve is provided on the bracket (91). An ink injection tube is connected to the box, and the box has an opening.

6. The flexographic printing plate testing device according to claim 3, characterized in that: The storage plate (2) includes a main body and a frame (82) part. The work station slot (20) is opened on the main body part, and the frame (82) part is magnetic.

7. The flexographic printing plate testing device according to claim 5, characterized in that: A dryer (103) is also provided on the outside of the frame (7), and the air outlet of the dryer (103) is below the moving path of the mounting plate (71).

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