Knife jumping prevention mechanism for scraper holder of photogravure press

Abstract

The utility model discloses an anti-jumping mechanism for a scraper holder of a photogravure press, and relates to the technical field of photogravure presses. The device comprises a rack, a gravure cylinder is rotationally connected into the rack, an impression cylinder is rotationally connected into the rack, a scraper frame body is installed in the rack, and an upper clamping plate is arranged at the top of the scraper frame body. The scraper holder is provided with the arc-shaped groove, the limiting assembly and the connecting block, when the scraper holder body rotates for angle adjustment, the connecting block can be driven to slide in the arc-shaped groove, and after the angle of the scraper holder body is adjusted, the connecting block can be stabilized in the arc-shaped groove through mutual cooperation of a clamping block and a clamping groove; therefore, the position of the scraper frame body can be stably fixed in the machine frame, the situation that the scraper drives the scraper frame body to shake under the high-speed impact of printing ink can be reduced, the situation that the scraper jumps is also reduced, and the overall printing quality is effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of gravure printing machines, and in particular to a knife-jumping prevention mechanism for a scraper frame of a gravure printing machine. Background Art

[0002] A gravure printing press is a machine that uses a gravure plate for printing. The image and text part of the plate is concave, while the blank part is on the same plane as the outer circle of the plate cylinder. When the gravure printing press is printing, the entire surface of the plate cylinder is inked, and the ink on the blank part of the plate is scraped off with a scraper, leaving the ink on the image and text part.

[0003] The scraper frame of the existing gravure printing machine is an important component of the gravure printing machine. It carries a scraper and is used to scrape off excess ink on the gravure cylinder during the printing process to ensure the quality of the printed product. In actual use, when the rotation speed of the gravure cylinder is too fast, the fluidity and distribution state of the ink on the gravure cylinder will change. Therefore, it is necessary to adjust the angle of the scraper according to the rotation speed of the gravure cylinder to better control the flow and distribution of the ink and ensure the quality of the printed product.

[0004] When the scraper angle is adjusted, the ink will continue to impact the scraper as the gravure cylinder rotates rapidly. At this time, the scraper may cause the scraper frame to shake after being impacted, resulting in scraper jumping, affecting the printing quality. For this reason, the present application provides an anti-skidding mechanism for the scraper frame of a gravure printing machine. Utility Model Content

[0005] The purpose of the present application is to provide a mechanism for preventing the scraper from jumping when the ink continuously impacts the scraper as the gravure cylinder rotates rapidly.

[0006] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions:

[0007] A knife-jumping prevention mechanism for a scraper frame of a gravure printing machine comprises a frame, a gravure roller is rotatably connected to the frame, a printing roller is rotatably connected to the frame, a scraper frame body is installed inside the frame, an upper clamping plate is arranged on the top of the scraper frame body, a stabilizing component is symmetrically installed on the top of the scraper frame body, a lining knife is installed between the scraper frame body and the upper clamping plate, a scraper is fixedly connected to the bottom of the lining knife, an adjusting component is installed inside the frame, arc grooves are symmetrically provided on both sides of the frame, a plurality of limit assemblies are evenly installed inside the arc grooves, connecting blocks are fixedly connected to both ends of the scraper frame body, and the connecting blocks are slidably connected inside the arc grooves.

[0008] By adopting the above technical scheme, the scraper is first fixed between the scraper frame body and the upper clamping plate through a stabilizing component, which improves the stability of the scraper and reduces the occurrence of scraper jumping due to shedding and shaking during use. When the speed of the gravure cylinder is increased according to the on-site conditions, the ink will exert a large impact force on the scraper. At this time, it is necessary to start the adjustment component to drive the scraper frame body to rotate to adjust the angle between the scraper and the gravure cylinder, so that the flow and distribution of ink can be better controlled to ensure the quality of the printed product. When the scraper frame body rotates, it will drive the connecting block to slide inside the arc groove. When the angle of the scraper frame body is adjusted, the position of the connecting block can be limited and fixed by the limiting component, so that the position of the scraper frame body can be stably fixed inside the frame. Therefore, the situation where the scraper drives the scraper frame body to shake under the high-speed impact of the ink can be reduced, and the situation where the scraper jumps can be reduced, which effectively improves the overall printing quality.

[0009] Furthermore, the stabilizing component includes a fixing frame 1 fixedly connected to the top of the scraper frame body, the fixing frame 1 is rotatably connected to a screw rod inside, a knob is passed through the top of the screw rod and is fixedly connected, an I-block is threadedly connected to the screw rod, and the bottom of the I-block is fixedly connected to the top of the upper clamping plate.

[0010] By adopting the above technical solution, the upper clamping plate is driven by the I-block to gradually approach the scraper frame body. The scraper frame body is tightly clamped by the upper clamping plate, so that the scraper can be firmly stabilized on the scraper frame body, which greatly improves the stability of the scraper and reduces the scraper from falling off and shaking during use, thereby reducing the occurrence of scraper jumping.

[0011] Furthermore, a second fixing frame is fixedly connected to the top of the scraper frame body, the second fixing frame is parallel to the first fixing frame, a guide rod is fixedly connected inside the second fixing frame, and one end of the I-shaped block is slidably connected to the guide rod.

[0012] By adopting the above technical solution, when the screw rod rotates, it will drive the I-shaped block to move upward on the screw rod along the guidance of the guide rod, thereby driving the upper clamping plate to separate from the scraper frame body.

[0013] Furthermore, a non-slip pad is fixedly connected to the bottom of the upper clamping plate.

[0014] By adopting the above technical solution, the friction between the anti-skid pad and the lining knife can be effectively improved, reducing the loosening of the lining knife and the scraper.

[0015] Furthermore, a plurality of fixing bolts are evenly threadedly connected on the upper clamping plate.

[0016] By adopting the above technical solution, the scraper frame body and the upper clamping plate are secondarily fixed by multiple stabilizing bolts, which greatly improves the stability of the scraper.

[0017] Furthermore, the adjustment assembly includes two fixed blocks symmetrically fixedly connected to the bottom of the scraper frame body, a rotating rod is rotatably connected inside the two fixed blocks, both ends of the rotating rod are rotatably connected to the two sides inside the frame, fixed plates are fixedly connected to the two sides inside the frame, an electric telescopic rod is fixedly connected to the top of the fixed plate, and the output end of the electric telescopic rod is hinged to the bottom of one end of the scraper frame body.

[0018] By adopting the above technical solution, the electric telescopic rod is started to make the scraper frame body rotate with the rotating rod as the center, thereby driving the scraper to adjust the angle. By adjusting the angle between the scraper and the gravure cylinder, the flow and distribution of the ink can be better controlled to ensure the quality of the printed product.

[0019] Furthermore, the limiting assembly includes a plurality of limiting grooves evenly and symmetrically opened inside the arc groove, a plurality of limiting grooves are slidably connected inside with a clamping block, a plurality of limiting grooves are fixedly connected inside with a spring, and one end of the spring is fixedly connected to one end of the clamping block.

[0020] By adopting the above technical solution, when the scraper frame body is rotated to adjust the angle, it will drive the connecting block to slide inside the arc groove. When the connecting block moves, the two sides of the connecting block will squeeze the arc end of the card block inside the arc groove and squeeze it into the interior of the limit groove.

[0021] Furthermore, one end of the clamping block away from the spring is arc-shaped, and both sides of the connecting block are provided with clamping grooves of the same size as the arc-shaped end of the clamping block.

[0022] By adopting the above technical solution, the connection block can be stabilized inside the arc groove through the mutual cooperation between the clamping block and the clamping groove, so that the position of the scraper frame body can be stably fixed inside the frame.

[0023] In summary, the present application includes at least one of the following beneficial effects:

[0024] 1. The present application is provided with an arc groove, a limit assembly and a connecting block. When the scraper frame body is rotated for angle adjustment, the connecting block will be driven to slide inside the arc groove. After the angle adjustment of the scraper frame body is completed, the connecting block can be stabilized inside the arc groove through the cooperation between the clamping block and the clamping groove, so that the position of the scraper frame body can be stably fixed inside the frame, which can reduce the shaking of the scraper frame body caused by the scraper under the high-speed impact of the ink, and also reduce the occurrence of scraper jumping, thereby effectively improving the overall printing quality.

[0025] 2. The present application is provided with a stabilizing component. When the screw rod rotates, the I-shaped block will be driven to gradually descend, and the upper clamping plate will be driven to gradually approach the scraper frame body through the I-shaped block until the anti-slip pad is in contact with the top surface of the lining knife. The scraper frame body is tightly clamped by the upper clamping plate, so the scraper can be firmly stabilized on the scraper frame body, which greatly improves the stability of the scraper and reduces the scraper from falling off and shaking during use, thereby reducing the occurrence of blade jumping. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the device body in this application.

[0027] Figure 2 It is a schematic diagram of the internal structure of the device body in this application.

[0028] Figure 3 It is a three-dimensional structural schematic diagram of the scraper holder body in this application.

[0029] Figure 4 It is a three-dimensional structural schematic diagram of the limiting component in this application.

[0030] Description of reference numerals:

[0031] 1. Frame; 2. Gravure roller; 3. Impression roller; 4. Scraper frame body; 5. Upper clamping plate; 6. Stabilizing assembly; 7. Lining knife; 8. Scraper; 9. Stabilizing bolt; 10. Adjusting assembly; 11. Arc groove; 12. Limiting assembly; 13. Connecting block; 61. Fixed frame 1; 62. Screw rod; 63. Knob; 64. I-block; 65. Fixed frame 2; 66. Guide rod; 67. Anti-skid pad; 101. Fixed block; 102. Rotating rod; 103. Fixed plate; 104. Electric telescopic rod; 121. Limiting groove; 122. Block; 123. Spring; 131. Slot. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-4 This application is described in further detail.

[0033] The embodiment of the present application discloses a blade jumping prevention mechanism for a scraper frame of a gravure printing machine.

[0034] Reference Figure 1 and Figure 2A knife-jumping prevention mechanism for a scraper frame of a gravure printing machine comprises a frame 1, a gravure cylinder 2 is rotatably connected inside the frame 1, a printing cylinder 3 is rotatably connected inside the frame 1, a scraper frame body 4 is installed inside the frame 1, an upper clamping plate 5 is arranged on the top of the scraper frame body 4, a stabilizing component 6 is symmetrically installed on the top of the scraper frame body 4, a lining knife 7 is installed between the scraper frame body 4 and the upper clamping plate 5, a scraper 8 is fixedly connected to the bottom of the lining knife 7, an adjusting component 10 is installed inside the frame 1, arc grooves 11 are symmetrically opened on both sides of the frame 1, a plurality of limit assemblies 12 are evenly installed inside the arc groove 11, connecting blocks 13 are fixedly connected at both ends of the scraper frame body 4, the connecting blocks 13 are slidably connected inside the arc groove 11, and a plurality of stabilizing bolts 9 are evenly threadedly connected on the upper clamping plate 5.

[0035] When in use, first separate the upper clamping plate 5 from the scraper frame body 4 through the stabilizing component 6, then place the lining knife 7 and the scraper 8 on the top of the scraper frame body 4, and then drive the upper clamping plate 5 to gradually approach the scraper frame body 4 through the stabilizing component 6, so as to fix the scraper 8 between the scraper frame body 4 and the upper clamping plate 5, and then use a plurality of stabilizing bolts 9 to perform secondary fixation between the scraper frame body 4 and the upper clamping plate 5, which greatly improves the stability of the scraper 8 and reduces the scraper 8 from falling off and shaking during use, and the occurrence of knife jumping. When the scraper 8 is fixed, the gravure cylinder 2 and the impression cylinder 3 can be started for normal operation and printing. As the gravure cylinder 2 is fitted with the scraper 8, the excess ink on the gravure cylinder 2 can be scraped off by the scraper 8. Secondly, when the gravure cylinder 2 is rotated according to the on-site conditions, When lifting, the ink will exert a greater impact force on the scraper 8. At this time, it is necessary to start the adjustment component 10 to drive the scraper frame body 4 to rotate to adjust the angle between the scraper 8 and the gravure cylinder 2, so that the flow and distribution of the ink can be better controlled to ensure the quality of the printed product. When the scraper frame body 4 rotates, it will drive the connecting block 13 to slide inside the arc groove 11. When the angle of the scraper frame body 4 is adjusted, the position of the connecting block 13 can be limited and fixed by the limiting component 12, so that the position of the scraper frame body 4 can be stably fixed inside the frame 1. Therefore, the scraper 8 can reduce the shaking of the scraper frame body 4 caused by the high-speed impact of the ink, and also reduce the scraper 8 from jumping, effectively improving the overall printing quality.

[0036] Reference Figure 2 and Figure 3The stabilizing component 6 includes a fixing frame 61 fixedly connected to the top of the scraper frame body 4, a screw rod 62 is rotatably connected inside the fixing frame 61, a knob 63 is passed through the top of the screw rod 62 and is fixedly connected, an I-block 64 is threadedly connected to the screw rod 62, the bottom of the I-block 64 is fixedly connected to the top of the upper clamping plate 5, a fixing frame 2 65 is fixedly connected to the top of the scraper frame body 4, the fixing frame 2 65 is parallel to the fixing frame 1 61, a guide rod 66 is fixedly connected inside the fixing frame 2 65, one end of the I-block 64 is slidably connected to the guide rod 66, and an anti-slip pad 67 is fixedly connected to the bottom of the upper clamping plate 5.

[0037] When in use, first turn the knob 63 to drive the screw rod 62 to rotate. When the screw rod 62 rotates, it will drive the I-block 64 to move upward on the screw rod 62 under the guidance of the guide rod 66, thereby driving the upper clamping plate 5 to separate from the scraper frame body 4. At this time, the lining knife 7 and the scraper 8 are inserted into the scraper frame body 4 and the upper clamping plate 5. Then, turn the knob 63 in the opposite direction again to drive the I-block 64 to gradually descend. The upper clamping plate 5 is driven by the I-block 64 to gradually approach the scraper frame body 4 until the anti-slip pad 67 is in contact with the top surface of the lining knife 7. Through the tight clamping of the scraper frame body 4 by the upper clamping plate 5, the scraper 8 can be firmly and stably fixed on the scraper frame body 4, which greatly improves the stability of the scraper 8 and reduces the occurrence of scraper jumping caused by falling off and shaking during use.

[0038] Reference Figure 2 and Figure 3 The adjustment component 10 includes two fixed blocks 101 symmetrically fixedly connected to the bottom of the scraper frame body 4, and a rotating rod 102 is rotatably connected inside the two fixed blocks 101. The two ends of the rotating rod 102 are rotatably connected to the two sides inside the frame 1. Fixed plates 103 are fixedly connected to the two sides inside the frame 1. The top of the fixed plate 103 is fixedly connected to an electric telescopic rod 104, and the output end of the electric telescopic rod 104 is hinged to the bottom of one end of the scraper frame body 4.

[0039] When in use, the electric telescopic rod 104 is started to drive the scraper frame body 4 on the top to move, so that the scraper frame body 4 rotates with the rotating rod 102 as the center, so that the angle of the scraper frame body 4 changes with the operation of the electric telescopic rod 104, thereby driving the scraper 8 to adjust the angle. By adjusting the angle between the scraper 8 and the gravure cylinder 2, the flow and distribution of the ink can be better controlled to ensure the quality of the printed product.

[0040] Reference Figure 1 and Figure 4The limiting assembly 12 includes a plurality of limiting grooves 121 that are evenly and symmetrically opened inside the arc groove 11, and a clamping block 122 is slidably connected inside the plurality of limiting grooves 121. A spring 123 is fixedly connected inside the plurality of limiting grooves 121, and one end of the spring 123 is fixedly connected to one end of the clamping block 122. The end of the clamping block 122 away from the spring 123 is arc-shaped, and both sides of the connecting block 13 are provided with clamping grooves 131 of the same size as the arc-shaped end of the clamping block 122.

[0041] When in use, when the scraper frame body 4 is rotated for angle adjustment, the connecting block 13 will be driven to slide inside the arc groove 11. When the connecting block 13 moves, the two sides of the connecting block 13 will squeeze the arc-shaped ends of the card block 122 inside the arc groove 11 and squeeze it into the inside of the limiting groove 121. When the angle of the scraper frame body 4 is adjusted, the card grooves 131 on both sides of the connecting block 13 will be aligned with two of the limiting grooves 121 on both sides of the arc groove 11. At this time, according to the elasticity of the spring 123, the card block 122 will be pushed into the inside of the card groove 131. Through the mutual cooperation between the card block 122 and the card groove 131, the connecting block 13 can be stabilized inside the arc groove 11, so that the position of the scraper frame body 4 can be stably fixed inside the frame 1, so that the scraper 8 can reduce the jitter of the scraper frame body 4 driven by the high-speed impact of the ink, and also reduce the situation of the scraper 8 jumping, thereby effectively improving the overall printing quality.

[0042] The implementation principle of the anti-jumping mechanism of the scraper frame of the gravure printing machine in this embodiment is as follows: when in use, first turn the knob 63 to drive the screw rod 62 to rotate. When the screw rod 62 rotates, it will drive the I-shaped block 64 to move upward on the screw rod 62 along the guidance of the guide rod 66, thereby driving the upper clamping plate 5 to separate from the scraper frame body 4. At this time, the lining knife 7 and the scraper 8 are inserted into the scraper frame body 4 and the upper clamping plate 5. Then, the knob 63 is rotated in the opposite direction again to drive the I-shaped block 64 to gradually descend, and the upper clamping plate 5 is driven by the I-shaped block 64 to gradually approach the scraper frame body 4 until the anti-slip pad 67 is in contact with the top surface of the lining knife 7, and then the scraper frame body 4 and the upper clamping plate 5 are fixed for the second time by multiple fixing bolts 9. The scraper frame body 4 is tightly clamped by the upper clamping plate 5, so that the scraper 8 can be firmly and stably fixed on the scraper frame body 4, which greatly improves the stability of the scraper 8 and reduces the scraper 8 from falling off and shaking during use.

[0043] Secondly, after the scraper 8 is fixed, the gravure cylinder 2 and the impression cylinder 3 can be started for normal printing. As the gravure cylinder 2 is fitted with the scraper 8, the excess ink on the gravure cylinder 2 can be scraped off by the scraper 8. When the gravure cylinder 2 increases its speed according to the on-site conditions, the ink will exert a greater impact force on the scraper 8. At this time, it is necessary to start the electric telescopic rod 104 to drive the top scraper frame body 4 to move, so that the scraper frame body 4 rotates with the rotating rod 102 as the center of the circle, so that the angle of the scraper frame body 4 changes with the operation of the electric telescopic rod 104, thereby driving the scraper 8 to adjust the angle. By adjusting the angle between the scraper 8 and the gravure cylinder 2, the flow and distribution of the ink can be better controlled to ensure the quality of the printed product. When the scraper frame body 4 is rotated for angle adjustment, it will drive the connecting block 13 to move in an arc shape. When the connecting block 13 moves, the two sides of the connecting block 13 will squeeze the arc-shaped end of the card block 122 inside the arc-shaped groove 11, and squeeze it into the inside of the limiting groove 121. When the angle of the scraper frame body 4 is adjusted, the card slots 131 on both sides of the connecting block 13 will be aligned with two of the limiting grooves 121 on both sides of the inside of the arc-shaped groove 11. At this time, according to the elasticity of the spring 123, the card block 122 will be pushed into the inside of the card slot 131. Through the mutual cooperation between the card block 122 and the card slot 131, the connecting block 13 can be stabilized inside the arc-shaped groove 11, so that the position of the scraper frame body 4 can be stably fixed inside the frame 1, which can reduce the situation that the scraper 8 drives the scraper frame body 4 to shake under the high-speed impact of the ink, and also reduce the situation that the scraper 8 jumps, thereby effectively improving the overall printing quality.

Claims

1. A scraper frame anti-blade jumping mechanism for a gravure printing machine, comprising a frame (1), characterized in that: The frame (1) is rotatably connected to a gravure roller (2), the frame (1) is rotatably connected to a printing roller (3), a scraper frame body (4) is installed inside the frame (1), an upper clamping plate (5) is arranged on the top of the scraper frame body (4), a stabilizing component (6) is symmetrically installed on the top of the scraper frame body (4), a lining knife (7) is installed between the scraper frame body (4) and the upper clamping plate (5), a scraper (8) is fixedly connected to the bottom of the lining knife (7), an adjusting component (10) is installed inside the frame (1), arc grooves (11) are symmetrically opened on both sides of the frame (1), a plurality of limiter components (12) are evenly installed inside the arc grooves (11), and connecting blocks (13) are fixedly connected to both ends of the scraper frame body (4), and the connecting blocks (13) are slidably connected inside the arc grooves (11).

2. The anti-knife jumping mechanism of the scraper holder of the gravure printing machine according to claim 1, characterized in that: The stabilizing component (6) comprises a fixing frame (61) fixedly connected to the top of the scraper frame body (4); a screw rod (62) is rotatably connected inside the fixing frame (61); a knob (63) is passed through the top of the screw rod (62) and fixedly connected thereto; an I-shaped block (64) is threadedly connected to the screw rod (62); and the bottom of the I-shaped block (64) is fixedly connected to the top of the upper clamping plate (5).

3. The anti-knife jumping mechanism of the scraper holder of the gravure printing machine according to claim 2, characterized in that: A second fixing frame (65) is fixedly connected to the top of the scraper frame body (4); the second fixing frame (65) is parallel to the first fixing frame (61); a guide rod (66) is fixedly connected inside the second fixing frame (65); one end of the I-shaped block (64) is slidably connected to the guide rod (66).

4. The anti-knife jumping mechanism of the scraper holder of the gravure printing machine according to claim 1, characterized in that: An anti-slip pad (67) is fixedly connected to the bottom of the upper clamping plate (5).

5. The anti-knife jumping mechanism of the scraper holder of the gravure printing machine according to claim 1, characterized in that: The upper clamping plate (5) is evenly threaded with a plurality of fixing bolts (9).

6. The anti-knife jumping mechanism of the scraper holder of the gravure printing machine according to claim 1, characterized in that: The adjustment assembly (10) comprises two fixed blocks (101) symmetrically fixedly connected to the bottom of the scraper frame body (4); a rotating rod (102) is rotatably connected to the inside of the two fixed blocks (101); two ends of the rotating rod (102) are rotatably connected to the inside of the frame (1); two sides of the frame (1) are fixedly connected to fixed plates (103); the top of the fixed plate (103) is fixedly connected to an electric telescopic rod (104); the output end of the electric telescopic rod (104) is hinged to the bottom of one end of the scraper frame body (4).

7. The anti-knife jumping mechanism of the scraper holder of the gravure printing machine according to claim 1, characterized in that: The limiting assembly (12) comprises a plurality of limiting grooves (121) uniformly and symmetrically arranged inside the arc-shaped groove (11); a clamping block (122) is slidably connected inside the plurality of limiting grooves (121); a spring (123) is fixedly connected inside the plurality of limiting grooves (121); one end of the spring (123) is fixedly connected to one end of the clamping block (122).

8. The anti-knife jumping mechanism of the scraper holder of the gravure printing machine according to claim 7, characterized in that: One end of the clamping block (122) away from the spring (123) is arc-shaped, and both sides of the connecting block (13) are provided with clamping grooves (131) of the same size as the arc-shaped end of the clamping block (122).

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