Pneumatic pressure adjusting mechanism for closed scraper of flexo printing machine and scraper

Abstract

The utility model discloses a pneumatic pressure adjusting mechanism for a closed scraper of a flexographic press and the scraper, which belong to the technical field of scrapers and comprise a scraper mechanism, a pneumatic pressure adjusting mechanism and a pneumatic pressure adjusting mechanism, the supporting mechanism comprises a supporting seat and a sliding block device connected with the supporting seat in a sliding mode, and the sliding block device comprises a connecting part used for blocking the knife cavity; the pressure adjusting mechanism is used for driving the sliding block device to be connected to the supporting base in a sliding mode, the pressure adjusting mechanism comprises an adjusting piece, and the adjusting key is used for controlling the distance, close to the cutter cavity, of the connecting part or the distance, away from the cutter cavity, of the connecting part. By changing the adjusting part of the pressure adjusting mechanism and controlling the distance between the connecting part and the cutter cavity or the distance between the connecting part and the cutter cavity, the adjusting part can achieve accurate adjustment, so that the pressure in the cutter cavity is adjusted, and the defects that in the prior art, the air pressure of equipment is not stable and cannot be accurately controlled are overcome.

Description

Technical Field

[0001] This utility model relates to the technical field of doctor blades, and in particular to a closed-type doctor blade pneumatic pressure adjustment mechanism and doctor blade for flexographic printing machines. Background Technology

[0002] Existing printing presses are equipped with a doctor blade assembly that scrapes away excess ink from the screen roller surface. The doctor blades contact the screen roller via cylinders at both ends. Since the cylinders themselves cannot be controlled, the gap between the doctor blades and the screen roller is adjusted manually by turning limit screws. However, this manual adjustment results in inconsistent left and right advance distances, leading to uneven ink thickness and color differences in the printing. Furthermore, the cylinder extension and retraction length cannot be precisely controlled, and unstable air pressure can cause vibrations in the contact between the doctor blades and the screen roller, affecting print quality. Utility Model Content

[0003] To overcome the technical problems of unstable air pressure and inaccurate control in existing equipment, this utility model provides a closed-loop pneumatic pressure adjustment mechanism for the doctor blade of a flexographic printing machine, comprising:

[0004] The doctor blade mechanism has a blade cavity for storing and transferring ink;

[0005] A support mechanism includes a support base and a slider device slidably connected to the support base, the slider device including a connecting portion for blocking the blade cavity;

[0006] A pressure adjustment mechanism is provided to drive the slider device to slide on the support base. The pressure adjustment mechanism includes an adjustment element, and the adjustment key is used to control the distance of the connecting part from the blade cavity or from the blade cavity.

[0007] Furthermore, the pressure adjustment mechanism also includes a drive component, and the adjusting component is connected to the drive component, the adjusting component being used to adjust the length of the telescopic end of the drive component.

[0008] Furthermore, the slider device includes a slider, which is fixedly connected to the telescopic end.

[0009] Furthermore, the support base is formed with a sliding track for accommodating the back-and-forth movement of the slider, and the slider is fixedly connected to the pressure adjustment mechanism.

[0010] Furthermore, the slider is connected to the connecting part, which extends from the sliding track and is connected to the scraper mechanism.

[0011] In addition, this utility model also provides a closed-loop doctor blade pneumatic pressure adjustment mechanism for a flexographic printing machine, which includes the above-mentioned closed-loop doctor blade pneumatic pressure adjustment mechanism. The doctor blade mechanism includes an anilox roller and at least a pair of oppositely arranged blades. The two blades are respectively connected to the two ends of the anilox roller to form the blade cavity.

[0012] Furthermore, the connecting part includes at least a fixing block with two flying wings and at least two pressure plates covering the flying wings, with the two blades located between the flying wings and the pressure plates; the fixing block covers the blade cavity.

[0013] Furthermore, the slider device also includes a rotating shaft, and the connecting part is rotatably connected to the slider through the rotating shaft.

[0014] Furthermore, the end of the fixing block furthest from the flying wing is a square structure.

[0015] Furthermore, the slider is provided with at least two pin holes, and the two pin holes are respectively located at the end of the connecting part away from the blade cavity.

[0016] Beneficial effects:

[0017] The beneficial effects of adopting the technical solution of this utility model are as follows:

[0018] The slider device of the support mechanism is slidably connected to the support base. The connecting part of the slider device forms the wall of the blade cavity, which is used to seal the blade cavity, making it a sealed space for storing ink. The blade part of the doctor blade mechanism is used to transfer ink. The slider device is connected to a pressure adjustment mechanism, which can drive the slider device to move along the length of the support base. The connecting part used to seal the blade cavity can also move accordingly. By changing the adjusting part of the pressure adjustment mechanism, the distance of the connecting part from or away from the blade cavity can be controlled. The adjusting part can achieve precise adjustment, thereby regulating the pressure in the blade cavity. This solves the defects of unstable air pressure and inaccurate control in existing technology. Users can adjust the air pressure in the blade cavity as needed, providing users with a good product experience and avoiding the need for manual control of the air pressure in the blade cavity, making operation convenient. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0020] Figure 1This is a schematic diagram of the structure of a closed-type doctor blade pneumatic pressure adjustment mechanism (working state) for a flexographic printing machine according to this utility model;

[0021] Figure 2 This is a schematic diagram of the connection structure between the pressure adjustment mechanism and the slider in a closed-type pneumatic pressure adjustment mechanism for a flexographic printing machine.

[0022] Figure 3 This is a schematic diagram of the structure of a closed-type doctor blade pneumatic pressure adjustment mechanism (in the collapsed state) for a flexographic printing machine according to this utility model;

[0023] Figure 4 This is a schematic diagram of the connecting part in a closed-type doctor blade pneumatic pressure adjustment mechanism (in the collapsed state) of a flexographic printing machine according to this utility model.

[0024] In the picture:

[0025] 101. Blade chamber; 1. Scraper mechanism; 11. Anilox roller; 12. Blade; 2. Support mechanism; 21. Support base; 211. Sliding track; 22. Slider device; 221. Connecting part; 2211. Flying wing; 2212. Fixing block; 2213. Pressure plate; 222. Slider; 222a. Pin hole; 223. Rotating shaft; 2230. Rotating hole; 3. Pressure adjustment mechanism; 31. Driving component; 311. Telescopic end; 32. Adjusting component; 4. Pin. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0027] Please refer to Figures 1 to 4 A closed-loop pneumatic pressure adjustment mechanism for a flexographic printing machine doctor blade, comprising:

[0028] The doctor blade mechanism 1 has a blade cavity 101 for storing and transferring ink;

[0029] The support mechanism 2 includes a support base 21 and a slider device 22 slidably connected to the support base 21. The slider device 22 includes a connecting part 221 for blocking the blade cavity 101.

[0030] The pressure adjustment mechanism 3 is used to drive the slider device 22 to slide on the support base 21. The pressure adjustment mechanism 3 includes an adjustment member 32, which is used to control the distance of the connecting part 221 from the blade cavity 101 or from the blade cavity 101.

[0031] In this technical solution, the slider device 22 of the support mechanism 2 is slidably connected to the support base 21. The connecting part 221 of the slider device 22 forms the wall of the blade cavity 101, which is used to seal the blade cavity 101, so that the blade cavity 101 is in a sealed space that can store ink. The scraper part of the scraper mechanism 1 is used to transfer ink. The slider device 22 is connected to a pressure adjustment mechanism 3. The pressure adjustment mechanism 3 can drive the slider device 22 to move along the length of the support base 21. The connecting part 221 used to seal the blade cavity 101 can also move accordingly. By changing the adjusting member 32 of the pressure adjustment mechanism 3, the distance of the connecting part 221 from or away from the blade cavity 101 can be controlled. The adjusting member 32 can achieve precise adjustment, thereby adjusting the pressure in the blade cavity 101. This solves the defects of unstable air pressure and inaccurate control in the prior art. Users can adjust the air pressure in the blade cavity 101 as needed, giving users a good product experience and avoiding the need for manual control of the air pressure in the blade cavity 101, which is convenient for operation.

[0032] The pressure adjustment mechanism 3 further includes a drive component 31, and an adjusting component 32 connected to the drive component 31. The adjusting component 32 is used to adjust the length of the telescopic end 311 of the drive component 31. In this embodiment, the drive component 31 is a stroke-adjustable cylinder, and the telescopic end 311 is the piston rod of the adjustable cylinder. It is a cylinder that can flexibly adjust the piston stroke according to actual needs. The adjusting component 32 is an adjustable nut, which is installed on the piston rod of the stroke-adjustable cylinder. By rotating the adjustable nut, its position on the piston rod is changed, thereby adjusting the length of the piston rod. The assembly relationship between the slider device 22 and the pressure adjustment mechanism 3 is determined by... Figure 2 and Figure 3 As shown, the slider device 22 includes a slider 222, which is fixedly connected to the telescopic end 311. The change in the length of the telescopic end 311 drives the slider 222 to move on the support base 21, changing the moving position of the slider device 22 on the support base 21. This, in turn, changes the distance of the connecting part 221 of the slider device 22 from the blade cavity 101 or away from the blade cavity 101, causing the internal pressure of the blade cavity 101 to change. At this time, the device is in working condition.

[0033] Furthermore, by Figure 1 and Figure 2As shown, the support base 21 has a sliding track 211 for accommodating the reciprocating movement of the slider 222, and the slider 222 is fixedly connected to the pressure adjustment mechanism 3. In this embodiment, the inner cavity of the support base 21 is open, and slide rail plates are fixedly installed on its two outer edges to form the sliding track 211. The slider 222 is matched and installed in the inner cavity of the support base 21. The slider 222 is fixedly connected to the telescopic end 311 of the drive member 31 of the pressure adjustment mechanism 3, and the pressure adjustment mechanism 3 can stably drive the slider 222 to move back and forth on the sliding track 211.

[0034] As a preferred implementation method, by Figure 1 and Figure 2 As shown, the slider 222 is connected to the connecting part 221, which extends from the sliding track 211 and is flexibly connected to the scraper mechanism 1.

[0035] A closed-type doctor blade for a flexographic printing machine, wherein a specific embodiment of the doctor blade mechanism 1 is as follows: Figure 1 As shown, the scraper mechanism 1 includes an anilox roller 11 and at least a pair of opposing blades 12. The two blades 12 are respectively connected to both ends of the anilox roller 11 to form the blade cavity 101. In this embodiment, the peripheral wall of the blade cavity 101 is formed by two blades 12. The two blades 12 are tightly fitted to the anilox roller 11. Ink is stored in the middle of the blade cavity 101. When the anilox roller 11 rotates, one blade 12 is responsible for scraping the ink, and the other blade 12 is responsible for sealing.

[0036] Furthermore, by Figure 1 and Figure 3 As shown, the connecting part 221 includes a fixing block 2212 with at least two flying wings 2211 and at least two pressure plates 2213 covering the flying wings 2211. The two blades 12 are located between the flying wings 2211 and the pressure plates 2213. The fixing block 2212 covers the blade cavity 101. The flying wings 2211 hold the blades 12 on the fixing block 2212. The fixing block 2212 covers the blade cavity 101, forming a closed blade cavity 101, which makes it difficult for ink to leak.

[0037] To facilitate replacement of blade 12, by Figures 1 to 4As shown, the slider device 22 further includes a rotating shaft 223, and the connecting part 221 is rotatably connected to the slider 222 through the rotating shaft 223. In this embodiment, the slider 222 is provided with a rotating hole 2230. One end of the rotating shaft 223 is inserted into the rotating hole 2230, and the other end of the rotating shaft 223 is fixedly connected to the connecting part 221. The rotating shaft 223 rotates around the rotating hole 2230, driving the connecting part 221 to rotate, so that the blade 12 fixed to the fixing block 2212 of the connecting part 221 can rotate and move out of the position where the anilox roller 11 and the blade 12 are tightly connected. At this time, the equipment is in a fallen state, and the blade 12 is moved out of the support mechanism 2, which is convenient for the user to replace the blade 12. The end of the fixing block 2212 away from the flying wing 2211 is a square structure, that is, the part of the fixing block 2212 connected to the rotating shaft 223 is a square structure. When rotating, the entire fixing block 2212 drives the blade 12 to rotate and fall out of the support base 21. The structure is stable, and the blade 12 is not easy to fall to other parts of the equipment during the rotation process.

[0038] As a preferred implementation method, by Figure 2 and Figure 4 As shown, the slider 222 has at least two pin holes 222a, which are located at the ends of the connecting part 221 away from the blade cavity 101. In this embodiment, the end of the connecting part 221 away from the blade cavity 101 is a square structure, with a rotating shaft 223 and pin holes 222a installed at its two ends respectively. The rotating shaft 223 is installed in the rotating hole 2230 of the slider 222 and rotates around it. When the blade 12 needs to be replaced, the rotating shaft 223 rotates, the connecting part 221 is laid down, and the pin 4 is inserted into the pin hole 222a. The entire fixing block 2212 can be fixed at two points, which is convenient for replacing the blade 12. When the pin 4 is retracted, the fixing block 2212 can drive the blade 12 to rotate back and fit tightly against the anilox roller 11. The structure is stable and easy to operate.

[0039] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A flexographic press closed doctor air pressure adjustment mechanism characterized by, The utility model relates to a printing plate cleaning device, including: Scraper mechanism (1) has the scraper cavity (101) for storing and delivering ink; Support mechanism (2) includes support seat (21) and the sliding block device (22) sliding connection with support seat (21), the sliding block device (22) includes the connecting portion (221) for blocking the scraper cavity (101); Pressure adjustment mechanism (3) is used to drive the sliding block device (22) sliding connection in support seat (21), and the pressure adjustment mechanism (3) includes adjusting part (32), and the adjusting part (32) is used to control the connecting portion (221) close to the scraper cavity (101) or away from the scraper cavity (101).

2. A soft print machine closed doctor blade pneumatic pressure adjustment mechanism according to claim 1, wherein, The pressure adjustment mechanism (3) further includes driving part (31), the adjusting part (32) is connected with the driving part (31), and the adjusting part (32) is used to adjust the length of the telescopic end (311) of the driving part (31).

3. A soft print machine closed doctor blade pneumatic pressure adjustment mechanism according to claim 2, wherein, The sliding block device (22) includes sliding block (222), and the sliding block (222) is fixedly connected with the telescopic end (311).

4. A soft print machine closed doctor blade pneumatic pressure adjustment mechanism according to claim 3, wherein, The support seat (21) is formed with sliding rail (211) for accommodating the back-and-forth movement of the sliding block (222), and the sliding block (222) is fixedly connected to the pressure adjustment mechanism (3).

5. A soft print machine closed doctor blade pneumatic pressure adjustment mechanism according to claim 4, wherein, The sliding block (222) is connected with the connecting portion (221), and the connecting portion (221) extends from the sliding rail (211) and is connected to the scraper mechanism (1).

6. A flexographic printing press closed doctor blade according to any one of claims 1 to 5, characterized in that The scraper mechanism (1) includes anilox roller (11) and at least one pair of oppositely arranged blades (12), and the two blades (12) are respectively connected to the two ends of the anilox roller (11) to form the scraper cavity (101).

7. A flexographic printer closed doctor blade according to claim 6, wherein, The connecting portion (221) includes at least two flying wings (2211) of the fixed block (2212) and at least two knife pressing plates (2213) covered on the flying wings (2211), and the two blades (12) are located between the flying wings (2211) and the knife pressing plates (2213); the fixed block (2212) is covered on the scraper cavity (101).

8. A flexographic printer closed doctor blade according to claim 3, wherein, The sliding block device (22) further includes rotating shaft (223), and the connecting portion (221) is rotationally connected with the sliding block (222) through the rotating shaft (223).

9. A flexographic printer closed doctor blade according to claim 7, wherein, The fixed block (2212) is square structure away from one end of the flying wing (2211).

10. A flexographic printer closed doctor blade according to claim 8, wherein, The sliding block (222) is provided with at least two bolt holes (222a), and the two bolt holes (222a) are respectively located away from one end of the connecting portion (221) from the scraper cavity (101).

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