An ink filter machine

Abstract

The present application relates to the technical field of ink filtration, and particularly to an ink filter, which comprises a machine base, a screen plate, a filter membrane and an ink receiving basin. The filter membrane is fixed inside the screen plate. The ink receiving basin is placed on the machine base and is located below the filter membrane. A fixing mechanism, the fixing mechanism includes an adjusting frame, a screen plate frame and a connecting component. The adjusting frame is fixedly connected to the machine base. The screen plate frame and the adjusting frame are connected through the connecting component. The screen plate frame is used for fixing the screen plate. A scraping mechanism, the scraping mechanism is located above the filter membrane. The scraping mechanism includes a scraper and a mounting table. The scraper is mounted on the mounting table. The mounting table is mounted on the machine base and is slidably connected to the machine base. A driving mechanism, the driving mechanism is mounted on the machine base. The driving mechanism is used for driving the scraper to scrape on the filter membrane. The present application has the effects of reducing the labor intensity of workers and improving the ink filtration efficiency.

Description

Technical Field

[0001] This application relates to the technical field of ink filtration, and particularly to an ink filter. Background Art

[0002] Ink is an important material for printing. Through printing, patterns or texts are presented on the printing substrate. Ink is composed of resin, pigment, filler, additives, and solvent, etc. Then these components are evenly mixed and repeatedly rolled to form a viscous colloidal fluid.

[0003] Due to the complex composition of the materials in the ink, there will be different particle sizes. Larger particles will affect the fluidity and viscosity of the ink, resulting in printing errors during the printing process. Therefore, the ink needs to be filtered.

[0004] The related technology is to pour the ink to be filtered on the filter membrane, and then manually use a scraper to continuously scrape the filter membrane to filter out the ink with small particles. However, this filtering method has a large manual labor intensity and a very low filtering efficiency. Summary of the Invention

[0005] In order to reduce the manual labor intensity and improve the efficiency of ink filtration, this application provides an ink filter.

[0006] The ink filter provided by this application adopts the following technical solutions:

[0007] An ink filter, which includes a machine base, a screen plate, a filter membrane, and an ink receiving basin. The filter membrane is fixed inside the screen plate. The ink receiving basin is placed on the machine base and is located below the filter membrane. A fixing mechanism, the fixing mechanism includes an adjusting frame, a screen plate frame, and a connecting component. The adjusting frame is fixedly connected to the machine base. The screen plate frame and the adjusting frame are connected through the connecting component. The screen plate frame is used to fix the screen plate;

[0008] An ink scraping mechanism, the ink scraping mechanism is located above the filter membrane. The ink scraping mechanism includes a scraper and a mounting table. The scraper is installed on the mounting table. The mounting table is installed on the machine base and is slidably connected to the machine base;

[0009] A driving mechanism, the driving mechanism is installed on the machine base. The driving mechanism is used to drive the scraper to scrape on the filter membrane.

[0010] By adopting the above technical solutions, the filter membrane is fixed to the screen plate, then the screen plate is fixed inside the screen plate frame, the screen plate frame is connected to the machine base through the connecting component, and finally the position of the screen plate frame is adjusted and determined on the adjusting frame. The driving mechanism drives the mounting table, so that the scraper on the mounting table scrapes the filter membrane, thereby increasing the efficiency of scraping ink on the filter membrane and reducing the labor intensity of workers.

[0011] Optionally, the ink scraping mechanism further includes an ink returning blade, which is installed on the installation table, and a folding angle is provided at one end of the ink returning blade away from the installation table.

[0012] By adopting the above technical solution, after the squeegee scrapes the filter membrane, the ink is easily scraped outside the filter holes of the filter membrane, while the ink returning blade can concentrate the ink again at the filter holes of the filter membrane, facilitating more ink to be filtered by the filter membrane when the squeegee scrapes the filter membrane next time, and the folding angle can increase the ink returning range of the ink returning blade and enhance the concentration effect of the ink.

[0013] Optionally, the ink scraping mechanism further includes two sets of lifting components, which are respectively connected to the squeegee and the ink returning blade. The lifting components are installed on the installation table and are used to lift the squeegee or the ink returning blade.

[0014] By adopting the above technical solution, the lifting components can drive the squeegee or the ink returning blade to move up and down, thereby switching between two different states of scraping ink or returning ink on the filter membrane by the squeegee or the ink returning blade. When the squeegee is below and the ink returning blade is above, the squeegee scrapes the filter membrane; when the ink returning blade is below and the squeegee is above, the ink returning blade returns the ink.

[0015] Optionally, the lifting component includes a fixator, a stabilizing frame and a cylinder. The squeegee (63) is detachably connected to a squeegee holder. The squeegee holder and the stabilizing frame are fixed by the fixator. The ink returning blade and the stabilizing frame are fixed by the fixator. The cylinder is installed on the installation table, and the piston rod of the cylinder is fixedly connected to the stabilizing frame.

[0016] By adopting the above technical solution, the squeegee holder can provide a stable installation foundation for the squeegee, and the squeegee can be removed from the squeegee holder, facilitating the replacement of the squeegee. The stabilizing frame can keep the squeegee holder and the ink returning blade in a stable working state. The fixator fixes the squeegee holder or the ink returning blade to the stabilizing frame, facilitating the removal of the squeegee holder or the ink returning blade from the stabilizing frame. The telescopic movement of the piston rod of the cylinder can drive the squeegee or the ink returning blade to move up and down.

[0017] Optionally, there are two sets of screen frames, which are respectively located at both ends of the screen. The screen frame is provided with a screen fixing member. One end of the screen fixing member abuts against the screen, and the other end of the screen fixing member is threadedly connected to the screen frame.

[0018] By adopting the above technical solution, the screen frame can ensure the stability at both ends of the screen. The screen frame and the screen are fixed by the screen fixing member, and the screen fixing member facilitates the removal and installation of the screen from the screen frame.

[0019] Optionally, there are two sets of connection components corresponding to the screen frame. Each set of connection components includes a first connecting rod, a second connecting rod and a support frame. Two connecting blocks are fixedly arranged on the side of each screen frame away from the screen. The connecting blocks penetrate in the vertical direction. The two ends of the first connecting rod are respectively rotatably connected to the two connecting blocks. There are two second connecting rods which are respectively located at the two ends of the first connecting rod. The axis of the first connecting rod is perpendicular to the axis of the second connecting rod. One end of the second connecting rod is fixedly connected to the first connecting rod. The other end of the second connecting rod passes through the support frame and is slidably connected to the support frame. A spring and a gasket are arranged between the second connecting rod and the support frame. One end of the spring abuts against the support frame, and the other end of the spring abuts against the gasket. The second connecting rod passes through the gasket and is threadedly connected to a fastener. The support frame is slidably connected to the adjusting frame.

[0020] By adopting the above technical solution, when the squeegee or the flood blade approaches the connection component, the force on one side of the screen frame increases, and the force on the other side of the screen frame decreases. The whole screen tilts towards the side with greater force, and the ink in the screen will also flow obliquely due to gravity, thereby increasing the ink flooding effect. During the tilting process of the screen, the screen frame and the connecting block rotate around the axis of the first connecting rod, and the second connecting rod and the support frame slide relative to each other. The spring corresponding to the rising side of the screen frame is compressed and shortened under force, and the spring corresponding to the falling side of the screen frame elongates after the force is reduced. As the squeegee or the flood blade reciprocates, the spring is continuously compressed and restored, which will cause a certain vibration effect on the screen, thereby accelerating the ink filtering effect in the screen. The height of the screen frame can be adjusted by rotating the fastener of the second connecting rod to make the screen in a proper position.

[0021] Optionally, a slider is fixedly arranged on the support frame, and a slide rail is arranged on the adjusting frame. The slider is located in the slide rail and is slidably connected to the slide rail.

[0022] By adopting the above technical solution, the cooperation of the slider and the slide rail ensures the stable sliding of the support frame during adjustment, which is convenient for adjusting the left and right positions of the screen.

[0023] Optionally, a spacing lock is arranged on the side of the slider close to the support frame. The spacing lock is threadedly connected to the slider. When the slider and the slide rail are fixed by the spacing lock, the position of the support frame on the adjusting frame is fixed.

[0024] By adopting the above technical solution, the spacing lock can ensure the fixed position of the support frame and the adjusting frame. When the support frame slides to a proper position, rotating the spacing lock can clamp the slider and the slide rail, thereby fixing the position of the support frame.

[0025] Optionally, a fixing frame is fixedly arranged on the machine base. The driving mechanism includes a motor and a lead screw. The motor is installed on the fixing frame. The output shaft of the motor is fixedly connected to the lead screw coaxially. The lead screw is rotatably connected to the fixing frame. The lead screw passes through the mounting table and is threadedly connected to the mounting table.

[0026] By adopting the above technical solution, when the motor is started, the motor drives the lead screw to rotate. The threaded connection between the lead screw and the mounting table enables the mounting table to slide along the length direction of the lead screw, thereby continuously adjusting the position of the scraper. Moreover, by changing the forward and reverse rotation of the motor, the sliding direction of the mounting table can be changed, causing the scraper and the ink return knife to reciprocate on the screen printing plate.

[0027] Optionally, the driving mechanism is further provided with a smooth rod. Both ends of the smooth rod are fixedly connected to the fixing frame. The fixing frame is provided with a baffle. The lead screw passes through the baffle and is fixedly connected to the baffle. A buffer pad is arranged on the side of the baffle close to the mounting table.

[0028] By adopting the above technical solution, the smooth rod can ensure the stability of the mounting table during sliding and prevent the mounting table from rotating. The baffle can limit the mounting table, while the buffer pad can provide a certain buffering effect to the mounting table, preventing the mounting table from directly impacting the baffle and causing damage to the baffle.

[0029] In summary, the present application includes at least one of the following beneficial technical effects:

[0030] 1. The screen printing plate frame, the connecting component and the adjusting frame can not only provide a stable installation foundation for the screen printing plate, but also change the position of the screen printing plate to adapt to different working environments;

[0031] 2. Scraping the filter membrane with the scraper can filter the ink, and the ink return knife can re-aggregate the ink, thereby increasing the efficiency of filtering the ink;

[0032] 3. The lifting component can ensure the up and down movement of the scraper or the ink return knife, enabling the scraper and the ink return knife to switch to different working states, and can also adjust the scraping force of the scraper and the ink return knife. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is the overall structural schematic diagram of an embodiment of the present application;

[0034] Figure 2 is the front view of the overall structure of an embodiment of the present application;

[0035] Figure 3 is an embodiment of the present application Figure 1 is the enlarged view of part A;

[0036] Figure 4 is the exploded structural schematic diagram of the fixing mechanism of an embodiment of the present application;

[0037] Figure 5 is a schematic structural diagram of the ink scraping mechanism according to an embodiment of the present application;

[0038] Figure 6 is an exploded schematic structural diagram of the ink scraping mechanism according to an embodiment of the present application.

[0039] Explanation of reference numerals: 1, machine base; 11, fixing frame; 2, screen plate; 3, filter membrane; 31, filtering part; 32, connecting part; 4, ink receiving basin; 5, fixing mechanism; 51, screen plate frame; 511, screen plate fixing member; 512, connecting block; 52, adjusting frame; 521, slide rail; 53, connecting component; 531, first connecting rod; 532, second connecting rod; 5321, spring; 5322, gasket; 533, support frame; 5331, slider; 5332, spacing lock; 6, ink scraping mechanism; 61, installation table; 611, installation groove; 62, lifting component; 621, air cylinder; 622, lifting rod; 623, lifting plate; 624, lifting block; 625, stabilizing frame; 6251, adjusting member; 626, fixator; 6261, pressing member; 63, scraper; 631, scraper frame; 64, ink return knife; 641, folding angle; 7, driving mechanism; 71, motor; 72, lead screw; 73, optical rod; 74, baffle; 741, buffer pad. Detailed implementation manners

[0040] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0041] The following will Figure 1 -attach Figure 6 further describe the present application in detail.

[0042] An embodiment of the present application discloses an ink filter, referring to Figure 1 and Figure 2 , which includes a machine base 1, a screen plate 2, a filter membrane 3, an ink receiving basin 4, a fixing mechanism 5, an ink scraping mechanism 6 and a driving mechanism 7. The filter membrane 3 is fixed inside the screen plate 2, and the ink receiving basin 4 is located directly below the filter membrane 3 and placed on the machine base 1. The fixing mechanism 5 is installed on the machine base 1, and the fixing mechanism 5 is used to fix the screen plate 2. The ink scraping mechanism 6 is installed on the machine base 1, the ink scraping mechanism 6 is located above the filter membrane 3, and the ink scraping mechanism 6 is used to scrape the filter membrane 3. The driving mechanism 7 is installed on the machine base 1, and the driving mechanism 7 is used to drive the ink scraping mechanism 6 to scrape on the filter membrane 3.

[0043] Referring to Figure 1 andFigure 2 The base 1 is provided with a fixing frame 11, which is detachably connected to the base 1 through fasteners, and is used to provide an installation basis for the fixing mechanism 5. The filter membrane 3 includes a filter portion 31 with filter holes in the middle and a connecting portion 32 fixed to the screen 2 on all sides. The filter membrane 3 is made of flexible material and has a certain deformation ability.

[0044] Reference Figure 3 and Figure 4 Two groups of fixing mechanisms 5 are correspondingly arranged at both ends of the length direction of the screen 2, and each group of fixing mechanisms 5 includes a screen frame 51, an adjustment frame 52 and a connecting assembly 53. The screen frame 51 is U-shaped and its opening faces the screen 2. The frame of the screen 2 is located in the screen frame 51. A screen fixing member 511 is arranged in the screen frame 51. One end of the screen fixing member 511 abuts against the screen 2, and the other end of the screen fixing member 511 passes through the screen frame 51 and is threadedly connected to the screen frame 51. The screen frame 51 and the screen 2 can be fastened by the screen fixing member 511.

[0045] Reference Figure 3 and Figure 4 The connecting assembly 53 includes a first connecting rod 531, a second connecting rod 532 and a support frame 533. A connecting block 512 is fixedly disposed on one side of the screen frame 51 away from the screen 2, and two connecting blocks 512 are provided and are respectively located at both ends of the screen frame 51. The two ends of the first connecting rod 531 are rotatably connected to the two connecting blocks 512 respectively, and the second connecting rod 532 is provided with two and is fixedly connected to the two ends of the first connecting rod 531 respectively, and the axis of the first connecting rod 531 and the axis of the second connecting rod 532 are perpendicular to each other, and the second connecting rod 532 is slidably connected to the support frame 533, and the end of the second connecting rod 532 away from the first connecting rod 531 is provided with a threaded section, the threaded section passes through the support frame 533 and is threadedly connected through a nut, and a spring 5321 and a gasket 5322 are provided between the nut and the second connecting rod 532, and the spring 5321 is sleeved on the second connecting rod 532, one end of the spring 5321 is abutted against the support frame 533, and the other end of the spring 5321 is abutted against the nut through the gasket 5322.

[0046] Reference Figure 3 and Figure 4 An adjusting frame 52 is fixedly arranged at the bottom of the fixing frame 11, and the length direction of the adjusting frame 52 is perpendicular to the length direction of the supporting frame 533. A slider 5331 and a spacing lock 5332 are arranged at one end of the supporting frame 533 close to the adjusting frame 52. The adjusting frame 52 is provided with a slide rail 521 for the slider 5331 to slide along its own length direction. The slider 5331 is provided with a threaded section close to the supporting frame 533 and is threadedly connected with the spacing lock 5332. When it is necessary to fix the position of the supporting frame 533 on the adjusting frame 52, the spacing lock 5332 is rotated to make the slider 5331 press against the slide rail 521.

[0047] Referring to Figure 5 and Figure 6 Figure 6 , the ink scraping mechanism 6 includes a mounting table 61, a lifting assembly 62, a squeegee 63, and an inking knife 64. The mounting table 61 is slidably connected to the fixing frame 11, and the mounting table 61 is L-shaped. Two sets of lifting assemblies 62 are provided and are respectively connected to the squeegee 63 and the inking knife 64. Each set of lifting assemblies 62 includes a cylinder 621, a lifting rod 622, a lifting plate 623, a lifting block 624, a stabilizing frame 625, and a fixture 626. The mounting table 61 is provided with a mounting groove 611 for mounting the cylinder 621. The piston rod of the cylinder 621 is fixedly connected to the lifting plate 623. Two lifting rods 622 are provided and are respectively fixedly connected to the lifting plate 623. The end of the lifting rod 622 away from the lifting plate 623 passes through the mounting table 61 and is fixedly connected to the lifting block 624. The lifting rod 622 is slidably connected to the mounting table 61, and a fixed connection is provided between the lifting block 624 and the stabilizing frame 625. The squeegee 63 is located below the stabilizing frame 625. A squeegee holder 631 is provided between the squeegee 63 and the stabilizing frame 625. The interior of the squeegee holder 631 is hollow. The squeegee 63 and the squeegee holder 631 are detachably connected by a fastener, which facilitates the replacement of the squeegee 63. The squeegee holder 631 and the stabilizing frame 625 are connected by a fixture 626. The fixture 626 is provided with a pressing member 6261. One end of the pressing member 6261 abuts against the stabilizing frame 625, and the other end is threadedly connected to the fixture 626. The inking knife 64 and the stabilizing frame 625 are fixed by the fixture 626. One end of the pressing member 6261 abuts against the stabilizing frame 625, and the other end is threadedly connected to the fixture 626. The stabilizing frame 625 is provided with an adjusting member 6251. The adjusting member 6251 is in threaded contact with the stabilizing frame 625. The lower end of the adjusting member 6251 abuts against the top of the inking knife 64 or the squeegee holder 631. One end of the inking knife 64 away from the stabilizing frame 625 is provided with a fold angle 641, and the fold angle 641 is bent in the direction close to the squeegee 63. The piston rod of the cylinder 621 can drive the stabilizing frame 625 to move up and down through the lifting plate 623 and the lifting rod 622, and the stabilizing frame 625 can move the squeegee 63 or the inking knife 64 up and down, so that two different states of filtering and inking can be switched. Tightening the pressing member 6261 can fix the stabilizing frame 625 and the inking knife 64, or fix the stabilizing frame 625 and the squeegee holder 631. Rotating the adjusting member 6251 can control the pressure at both ends of the inking knife 64 or both ends of the squeegee 63, and change the effect of ink scraping or inking.

[0048] Referring to Figure 1, the driving mechanism 7 includes a motor 71, a lead screw 72, and a smooth rod 73. The motor 71 is installed on one side of the fixed frame 11. The output shaft of the motor 71 is coaxially and fixedly connected to the lead screw 72. The two ends of the lead screw 72 are rotatably connected to the fixed frame 11, and the lead screw 72 is threadedly connected to the mounting table 61. The smooth rod 73 is arranged in parallel with the lead screw 72, and the two ends of the smooth rod 73 are fixedly connected to the fixed frame 11. The smooth rod 73 is slidably connected to the mounting table 61. Baffles 74 are arranged on both sides of the mounting table 61. The lead screw 72 passes through the baffle 74 and is fixedly connected to the baffle 74, or the lead screw 72 passes through the baffle 74 and is rotatably connected to the baffle 74 with a clearance fit. A buffer pad 741 is arranged on the side of the baffle 74 close to the mounting table 61. The motor 71 drives the lead screw 72 to rotate. The mounting table 61 cooperates with the lead screw 72 and slides along the length direction of the lead screw 72 under the limitation of the smooth rod 73, so as to control the ink scraping of the scraper 63 on the filter membrane 3 or the ink return of the ink return knife 64.

[0049] The implementation principle of the embodiment of this application is as follows:

[0050] Preparation stage: Load the screen plate 2 onto the screen plate frame 51, and then rotate the screen plate fixing member 511 to fix the screen plate 2 and the screen plate frame 51; Rotate the nut at the upper end of the second connecting rod 532 to make the four corners of the screen plate frame 51 tend to be in a horizontal state. Slide the support frame 533 along the length direction of the adjusting frame 52 to a suitable position, and then rotate the spacing lock 5332 to fix the position of the support frame 533. Place the ink receiving basin 4 under the filter membrane 3.

[0051] Working stage: Start the motor 71. The motor 71 drives the lead screw 72 to rotate. The lead screw 72 drives the mounting table 61 to slide along the length direction of the lead screw 72. Change the rotation direction of the motor 71 to make the mounting table 61 move reciprocally; When the mounting table 61 slides from left to right, the piston rod of one cylinder 621 extends, and the piston rod of the other cylinder 621 retracts, so that the scraper 63 is lifted and the ink return knife 64 drops, and the ink on both sides of the ink return knife 64 is scraped to the middle position; When the mounting table 61 slides from right to left, the scraper 63 drops and abuts against the filter membrane 3, the ink return knife 64 is lifted, and the scraper 63 scrapes the filter membrane 3, so that the ink passes through the filter membrane 3 and drips into the ink receiving basin 4. Rotate the adjusting member 6251 to control the pressure of the ink return knife 64 or the scraper 63 on the filter membrane 3, and repeat the above process to continuously filter the ink in the screen plate 2.

[0052] When the ink scraping mechanism 6 gradually approaches the screen frame 51 on one side, the squeegee 63 or the ink return blade 64 will apply a certain pressure to the filter membrane 3, and the pressure is transmitted to the screen frame 51 to cause one of the two screen frames 51 to rise and the other to fall. The ink in the screen 2 will flow obliquely towards the lower side. During this process, the screen frame 51 rotates with the first connecting rod 531, and the second connecting rod 532 slides relative to the support frame 533. Then, the spring 5321 corresponding to the rising screen frame 51 is compressed and shortened, and the spring 5321 corresponding to the falling screen frame 51 slightly elongates and restores. Moreover, when the ink scraping mechanism 6 moves in the opposite direction and resets, the spring 5321 will produce a certain vibration effect, thereby increasing the filtering effect of the filter membrane 3.

[0053] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An ink filter, comprising a machine base (1), a screen plate (2), a filter membrane (3) and an ink receiving basin (4). The filter membrane (3) is fixed inside the screen plate (2). The ink receiving basin (4) is placed on the machine base (1) and is located below the filter membrane (3). It is characterized in that: It further comprises a fixing mechanism (5). The fixing mechanism (5) includes an adjusting frame (52), a screen plate frame (51) and a connecting component (53). The adjusting frame (52) is fixedly connected to the machine base (1). The screen plate frame (51) and the adjusting frame (52) are connected by the connecting component (53). The screen plate frame (51) is used to fix the screen plate (2). a scraping mechanism (6). The scraping mechanism (6) is located above the filter membrane (3). The scraping mechanism (6) includes a scraper (63) and a mounting table (61). The scraper (63) is mounted on the mounting table (61). The mounting table (61) is mounted on the machine base (1) and is slidably connected to the machine base (1). a driving mechanism (7). The driving mechanism (7) is mounted on the machine base (1). The driving mechanism (7) is used to drive the scraper (63) to scrape on the filter membrane (3). There are two groups of screen plate frames (51) which are respectively located at both ends of the screen plate (2). The screen plate frame (51) is provided with a screen plate fixing part (511). The screen plate fixing part (511) abuts against the screen plate (2). The screen plate fixing part (511) is threadedly connected to the screen plate frame (51). There are two groups of connecting components (53) corresponding to the screen plate frame (51). Each group of connecting components (53) includes a first connecting rod (531), a second connecting rod (532) and a support frame (533). On the side of each screen plate frame (51) away from the screen plate (2), two connecting blocks (512) are fixedly provided. The connecting blocks (512) are vertically penetrated. The two ends of the first connecting rod (531) are respectively rotatably connected to the two connecting blocks (512). There are two second connecting rods (532) which are respectively located at both ends of the first connecting rod (531). The axis of the first connecting rod (531) is perpendicular to the axis of the second connecting rod (532). One end of the second connecting rod (532) is fixedly connected to the first connecting rod (531). The other end of the second connecting rod (532) passes through the support frame (533) and is slidably connected to the support frame (533). A spring (5321) and a gasket (5322) are arranged between the second connecting rod (532) and the support frame (533). One end of the spring (5321) abuts against the support frame (533). The other end of the spring (5321) abuts against the gasket (5322). The second connecting rod (532) passes through the gasket (5322) and is threadedly connected to the fastener. The support frame (533) is slidably connected to the adjusting frame (52).

2. An ink filter according to claim 1, It is characterized in that: The ink scraping mechanism (6) further includes an ink return blade (64). The ink return blade (64) is installed on the installation table (61), and a folding angle (641) is provided at one end of the ink return blade (64) away from the installation table (61).

3. An ink filter according to claim 2, characterized in that: The ink scraping mechanism (6) further includes two sets of lifting components (62). The two sets of lifting components (62) are respectively connected to the scraper (63) and the ink return blade (64). The lifting components (62) are installed on the installation table (61), and the lifting components (62) are used to lift the scraper (63) or the ink return blade (64).

4. An ink filter according to claim 3, characterized in that: The lifting component (62) includes a fixator (626), a stabilizing frame (625) and a cylinder (621). The scraper (63) is detachably connected to a scraper frame (631). The scraper frame (631) and the stabilizing frame (625) are fixed by the fixator (626). The ink return blade (64) and the stabilizing frame (625) are fixed by the fixator (626). The cylinder (621) is installed on the installation table (61), and the piston rod of the cylinder (621) is fixedly connected to the stabilizing frame (625).

5. An ink filter according to claim 1, characterized in that: The support frame (533) is provided with a slider (5331), and the adjusting frame (52) is provided with a slide rail (521). The slider (5331) is located in the slide rail (521) and is slidably connected to the slide rail (521).

6. An ink filter according to claim 5, characterized in that: A spacing lock (5332) is provided on one side of the slider (5331) close to the support frame (533). When the slider (5331) and the slide rail (521) are fixed by the spacing lock (5332), the position of the support frame (533) on the adjusting frame (52) is fixed.

7. An ink filter according to claim 1, characterized in that: The machine base (1) is fixedly provided with a fixing frame (11). The driving mechanism (7) includes a motor (71) and a lead screw (72). The motor (71) is installed on the fixing frame (11), and the output shaft of the motor (71) is coaxially and fixedly connected to the lead screw (72). The lead screw (72) is rotatably connected to the fixing frame (11), and the lead screw (72) passes through the installation table (61) and is threadedly connected to the installation table (61).

8. An ink filter according to claim 7, characterized in that: The driving mechanism (7) is further provided with a smooth rod (73). Both ends of the smooth rod (73) are fixedly connected to the fixing frame (11). The fixing frame (11) is provided with a baffle (74). The lead screw (72) passes through the baffle (74) and is fixedly connected to the baffle (74). A buffer pad (741) is provided on one side of the baffle (74) close to the installation table (61).

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