An anti-ink-swinging device for directly supplying ink to a rubber roller and an installation method thereof

Abstract

The invention discloses an anti-ink-swinging device for directly supplying ink to a rubber roller and an installation method thereof, comprising an ink outlet mechanism and an ink roller, wherein the ink outlet mechanism is adapted to the ink roller, and ink is directly injected onto the ink roller through the ink outlet mechanism, the ink outlet mechanism comprises an ink outlet assembly for injecting ink onto the ink roller and an ink roller pressing sheet assembly for scraping the ink on the ink roller, the ink roller pressing sheet assembly is installed on the ink outlet assembly, the ink roller pressing sheet assembly is fitted with the ink roller, and the ink on the ink roller is scraped off through the ink roller pressing sheet assembly, so that the ink on the ink roller is more evenly covered on the surface of the ink roller, and the aggregation of ink droplets on the surface of the ink roller can be effectively reduced, so as to prevent ink from being thrown off during printing and improve printing quality, and the structure of the anti-ink-swinging device is simpler, thereby reducing the production cost of the device.

Description

Technical Field

[0001] The invention belongs to the technical field of printing machines, and in particular relates to an ink-throwing prevention device for directly supplying ink to a rubber roller and an installation method thereof. Background Art

[0002] The printing industry has a long history and involves industries such as publishing, packaging, paper products, and plastics. It is an important pillar for the development of the cultural industry. However, during the printing process, ink often accumulates on the rubber roller, causing ink to be thrown away under the action of centrifugal force, forming ink mist that pollutes the environment or is thrown onto the paper transfer roller, gripper bar, and the paper being printed, causing dirt.

[0003] Ink throwing is a common fault problem in the printing process. The causes are complex. Water-ink balance, temperature and humidity, printing pressure, printing speed, and rubber roller aging may all cause ink throwing. The common solution at present is to regularly check the status of the printing machine and rubber roller and clean the ink, but it can only provide short-term relief and cannot fundamentally solve the problem.

[0004] In addition, by consulting the literature, it is found that setting a baffle in the ink fountain of the printing machine, or changing the structure of the ink roller can reduce the impact of ink throwing or ink throwing. For example, the invention patent with application number 201420359817.3 discloses a non-ink throwing printing roller, the side of which contains an ink filling hole, which is connected to the internal cavity of the roller, and a sponge is placed in the cavity. When printing, the ink in the sponge seeps out along the printing lines. The invention patent with application number 201621361907.1 discloses a rubber roller that prevents ink throwing. An irregular trapezoidal structure groove is processed on the surface of the rubber roller by laser to increase the ink absorption and reduce throwing out. The invention patent with application number 201921066848.9 discloses a printing machine anti-ink throwing ink fountain device, the ink transfer roller is built into the ink fountain box, and the ink transfer roller is covered with a rotatable ink transfer baffle to block the splashing ink. The above two methods reduce printing ink throwing by changing part of the structure, which is costly and complicated to implement. Summary of the invention

[0005] In view of the above shortcomings, the technical problem to be solved by the present invention is to provide an anti-ink throwing device for directly supplying ink to a rubber roller and an installation method thereof, so as to prevent ink throwing during the printing process and make the ink supplied by the ink supply device more stable and uniform.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] The invention discloses an ink-throwing prevention device for directly supplying ink to a rubber roller, comprising an ink outlet mechanism and an ink roller, wherein the ink outlet mechanism is adapted to the ink roller, the ink outlet mechanism comprises an ink outlet assembly and an ink roller pressing sheet assembly, the ink roller pressing sheet assembly is mounted on the ink outlet assembly, and the ink roller pressing sheet assembly is fitted to the ink roller.

[0008] Furthermore, the ink outlet assembly includes an ink knife and an ink outlet pressing plate. The ink outlet pressing plate is fixedly mounted on the ink knife, and an ink outlet flow channel is formed between the ink outlet pressing plate and the ink knife.

[0009] Furthermore, a main flow channel and an ink outlet cavity are dug inside the ink knife, the main flow channel is connected with the ink outlet cavity, the ink outlet pressing plate is fixedly pressed on the ink outlet cavity, and an ink outlet flow channel is formed between the ink outlet pressing plate and the ink outlet cavity.

[0010] Furthermore, a guide surface is provided in the ink outlet cavity, and the opening of the main flow channel faces the guide surface.

[0011] Furthermore, a middle flow channel plate and a side flow channel plate are fixedly connected in the ink outlet cavity, the side flow channel plate is symmetrically connected in the ink outlet cavity relative to the middle flow channel plate, and the middle flow channel plate is in the same straight line as the main flow channel.

[0012] Furthermore, a guide plane is provided on the upper end surface of the middle flow channel plate, the guide plane is perpendicular to the main flow channel, and a flow channel plate inclined surface is provided on the upper end surface of the side flow channel plate, and the edge of the guide plane and the flow channel plate inclined surface are located on the same plane.

[0013] Furthermore, the ink roller pressing plate assembly includes an ink fountain pressing plate and an ink fountain plate, the ink fountain pressing plate is fixedly installed on the outside of the ink outlet pressing plate, the ink fountain plate is fixedly installed between the ink fountain pressing plate and the ink outlet pressing plate, and the ink fountain plate is in contact with the ink roller.

[0014] Furthermore, the ink fountain film includes a first ink fountain film and a second ink fountain film, the first ink fountain film and the second ink fountain film are attached to each other, the extended ends of the first ink fountain film and the second ink fountain film are not attached, and the lower end of the first ink fountain film is lower than the lower end of the second ink fountain film.

[0015] Furthermore, the ink fountain pressing piece includes a pressing piece portion and an arched portion, the arched portion is fixedly connected to the end surface of the pressing piece portion to form a spring installation cavity, and a pressing piece spring is installed in the spring installation cavity.

[0016] Furthermore, a through hole is dug on the ink fountain pressing plate, and the through hole passes through the pressing plate part and the arch part. An elastic screw assembly is installed in the through hole. The elastic screw assembly includes a clamping screw and a clamping nut. The clamping nut and the clamping screw are threadedly connected and then glued. The two ends of the pressing plate spring are respectively arranged between the clamping nut and the ink outlet pressing plate.

[0017] Furthermore, the lower end surface of the ink knife is wedge-shaped, and the wedge angle of the ink knife is 25° to 35°.

[0018] The installation method of the ink-spinning prevention device for directly supplying ink to the rubber roller comprises the following installation steps:

[0019] (1) preparing a first ink fountain film and a second ink fountain film;

[0020] (2) Attach a layer of double-sided tape to the ink fountain pressing sheet, and attach the first ink fountain sheet to the ink fountain pressing sheet;

[0021] (3) affix a layer of double-sided tape on the second ink fountain sheet, and affix the second ink fountain sheet to the first ink fountain sheet;

[0022] (4) Micro-adjust the ink fountain pressure plate to ensure that the distance between the bottom edge of the first ink fountain plate and the tip of the ink knife is 6±0.5mm, and the micro-tightening screws keep the relative distance between the pressure plate and the ink knife unchanged;

[0023] (5) Tighten the ink fountain pressing piece with force, starting from the middle of the ink knife, and tighten the ink fountain pressing piece to both ends in a regular manner from left to right. During this period, pay attention to check whether the distance between the bottom edge of the ink fountain piece and the tip of the ink knife is 6±0.5MM, and finally form an ink roller pressing piece assembly;

[0024] (6) The ink roller pressing assembly is fixedly mounted on the ink outlet assembly to form an ink outlet mechanism;

[0025] (7) Place the wedge-shaped surface of the ink outlet mechanism close to the ink roller so that the ink fountain sheet fits the ink roller.

[0026] The beneficial effect of the present invention is that the ink on the ink roller is scraped by the ink roller pressing assembly, so that the ink on the ink roller is more evenly coated on the surface of the ink roller, and the amount of ink on the ink roller can be effectively reduced, thereby preventing the ink throwing phenomenon from occurring during the printing process and improving the printing quality. In addition, the structure of the ink throwing device is simpler, which reduces the production cost of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a cross-sectional view of the device.

[0028] Figure 2 It is a schematic diagram of the structure of the ink knife.

[0029] Figure 3 It is a cross-sectional view of the ink outlet portion of the ink outlet device.

[0030] Figure 4 It is a structural schematic diagram of the ink outlet chamber of the first embodiment.

[0031] Figure 5 It is a cross-sectional view of the ink outlet cavity of the second embodiment.

[0032] Figure 6 It is a cross-sectional view of the ink outlet cavity of the third embodiment.

[0033] Figure 7 It is a cross-sectional view of an ink-throwing prevention device using the ink fountain pressing sheet of the fourth embodiment.

[0034] Figure 8 It is a front view of the ink fountain pressing piece of embodiment 4.

[0035] Fig. 9 It is a rear view of the ink fountain pressing sheet of embodiment 4.

[0036] Figure numerals: ink outlet mechanism 1, ink roller 2, ink outlet assembly 3, ink roller pressure plate assembly 4, ink knife 5, ink outlet pressure plate 6, ink outlet flow channel 7, main flow channel 8, ink outlet cavity 9, guide surface 10, middle flow channel plate 11, side flow channel plate 12, guide plane 13, flow channel plate inclined surface 14, first side flow channel plate 15, second side flow channel plate 16, bending portion 17, ink fountain pressure plate 18, ink fountain plate 19, first ink fountain plate 20, second ink fountain plate 21, mounting groove 22, pressure plate portion 23, arch portion 24, spring mounting cavity 25, pressure plate spring 26, through hole 27, clamping screw 28, clamping nut 29, countersunk groove 30. DETAILED DESCRIPTION

[0037] The present invention will be further described below in conjunction with the accompanying drawings.

[0038] Embodiment 1

[0039] The invention discloses an anti-ink-spinning device for directly supplying ink to a rubber roller, comprising an ink outlet mechanism 1 and an ink roller 2, wherein the ink outlet mechanism 1 is adapted to the ink roller 2, and ink is directly injected onto the ink roller 2 through the ink outlet mechanism 1, the ink outlet mechanism 1 comprises an ink outlet assembly 3 for injecting ink onto the ink roller 2 and an ink roller pressing sheet assembly 4 for scraping the ink on the ink roller, the ink roller pressing sheet assembly 4 is mounted on the ink outlet assembly 3, the ink roller pressing sheet assembly 4 is fitted with the ink roller 2, and the ink on the ink roller 2 is scraped through the ink roller pressing sheet assembly 4, so that the ink on the ink roller 2 is more evenly covered on the surface of the ink roller 2, and the aggregation of ink droplets on the surface of the ink roller 2 can be effectively reduced, so as to prevent the ink-spinning phenomenon from occurring during the printing process, thereby improving the printing quality, and the structure of the ink-spinning device is simpler, thereby reducing the production cost of the device.

[0040] The ink outlet assembly 3 includes an ink knife 5 and an ink outlet pressing plate 6. The ink outlet pressing plate 6 is fixedly mounted on the ink knife 5. An ink outlet flow channel 7 is formed between the ink outlet pressing plate 6 and the ink knife 5. The arrangement of the ink outlet pressing plate 6 facilitates the processing of the ink outlet cavity 9 in the ink knife 5, thereby improving the production efficiency of the ink knife 5.

[0041] A main flow channel 8 and an ink outlet cavity 9 are dug inside the ink knife 5. The main flow channel 8 is connected to the ink outlet cavity 9. The ink outlet pressing plate 6 is fixedly pressed on the ink outlet cavity 9. An ink outlet flow channel 7 is formed between the ink outlet pressing plate 6 and the ink outlet cavity 9. The setting of the ink outlet cavity 9 facilitates the diversion of the ink in the main flow channel 8, so that the ink can flow out through the evenly distributed ink outlet flow channel 7, so that the ink discharged through the ink knife 5 can be more evenly added to the ink roller 2, further preventing the accumulation of ink on the ink roller, thereby reducing the ink throwing phenomenon during the printing process and improving the printing quality.

[0042] A guide surface 10 is provided in the ink outlet cavity 9, and the opening of the main flow channel 8 faces the guide surface 10, so that the ink flowing into the ink outlet cavity 9 from the main flow channel 8 drops onto the guide surface 10, and is guided by the guide surface 10, so that the ink in the ink outlet cavity 9 flows out evenly through the ink outlet channel 7.

[0043] In some preferred embodiments, the guide surface 10 is an inclined surface. By setting the inclined guide surface 10, it is convenient to guide the dripping ink, which can reduce the dripping speed of the ink and expand the ink outlet width, so that the ink knife 5 can inject ink to the ink roller 2 more evenly.

[0044] A plurality of ink outlet channels 7 are excavated in the ink outlet cavity 9, a middle channel plate 11 and a side channel plate 12 are formed between adjacent ink outlet channels 7, the side channel plates 12 are symmetrically distributed in the ink outlet cavity 9 relative to the middle channel plate 11, ink outlet channels 7 are formed between adjacent channel plates, the middle channel plate 11 is in the same straight line as the main channel 8, and through the setting of the middle channel plate 11, the ink flowing out of the main channel flows to both sides of the middle channel plate 11 under the action of the guide surface 10.

[0045] A guide plane 13 is provided on the upper end surface of the middle flow channel plate 11, and the guide plane 13 is perpendicular to the main flow channel 8. A flow channel plate inclined surface 14 is provided on the upper end surface of the side flow channel plate 12, and the edge of the guide plane 13 and the flow channel plate inclined surface 14 are located on the same plane.

[0046] In this embodiment, a first side flow channel plate 15 and a second side flow channel plate 16 are provided, so as to form 6 evenly distributed ink outlet channels 7 in the ink outlet cavity 9. Preferably, the first side flow channel plate 15 is located between the second side flow channel plate 16 and the middle flow channel plate 11, and the first side flow channel plate 15 is provided with a bending portion 17, so that the path lengths of each ink outlet channel are roughly equal, that is, each ink outlet channel 7 of the same main channel discharges ink at the same time.

[0047] The ink roller pressing plate assembly 4 includes an ink fountain pressing plate 18 and an ink fountain sheet 19. The ink fountain pressing plate 18 is fixedly installed on the outer side of the ink outlet pressing plate 6, and the ink fountain sheet 19 is fixedly installed between the ink fountain pressing plate 18 and the ink outlet pressing plate 6. The ink fountain sheet 19 is in contact with the ink roller 2. The ink on the ink roller 2 is scraped by the ink fountain sheet 19 to make the ink on the ink roller 2 more uniform and prevent ink accumulation. An installation groove 22 is provided on the end surface of the ink fountain pressing plate 18. The installation groove 22 is used to fix the ink fountain sheet 19. In this embodiment, the ink fountain pressing plate 18 adopts a flat plate structure.

[0048] The ink fountain sheet 19 includes a first ink fountain sheet 20 and a second ink fountain sheet 21. The first ink fountain sheet 20 and the second ink fountain sheet 21 are fitted together, and the protruding ends of the first ink fountain sheet 20 and the second ink fountain sheet 21 are not fitted together. The first ink fountain sheet 20 and the second ink fountain sheet 21 are elastically deformed under the action of the ink roller 2, and can be better fitted with the ink roller 2. The lower end of the first ink fountain sheet 20 is lower than the lower end of the second ink fountain sheet 21, that is, the width of the first ink fountain sheet 20 is greater than the width of the second ink fountain sheet 21, so that the fitting surface of the ink fountain sheet 19 and the ink roller 2 is increased, and the ink can be better scraped. Preferably, the width difference between the lower end of the first ink fountain sheet 20 and the lower end of the second ink fountain sheet 21 is 0.5~2.5mm. As the use time of the ink fountain sheet increases, the ink fountain sheet will be worn or deformed, affecting the anti-ink throwing effect. The ink fountain sheet is fixed and installed by double-sided tape, and the ink fountain sheet can be quickly and conveniently disassembled and replaced.

[0049] The lower end surface of the ink knife 5 is wedge-shaped, and the wedge angle of the ink knife 5 is 25°~35°. Preferably, the wedge angle of the ink knife 5 is 30°. After installation, the distance between the ink roller 2 and the ink outlet of the ink outlet channel 7 is 0.03~0.5mm.

[0050] In some preferred embodiments, the end thickness of the ink outlet channel 7 is 0.25~0.35mm, the total width of the ink outlet channel 7 corresponding to each main channel 8 is 15~28mm, the width of each ink outlet channel 7 differs by no more than 1mm, and they are symmetrically distributed with the main channel as the center. The channels are in various shapes such as comb shape and wing shape, to ensure that each ink outlet channel outputs the same amount of ink per unit time.

[0051] The installation method of the ink-spinning prevention device for directly supplying ink to the rubber roller comprises the following installation steps:

[0052] (1) Clean the ink knife installation surface, and make sure there is no ink or burrs on the surface. Place the natural sealing strip in the ink knife groove and fill it. Place the ink pressure plate on the ink knife with the top close to the ink knife groove. Install the ink pressure plate with screws. Tighten it from the middle to both sides one by one.

[0053] (2) Reprocess the wedge-shaped bevel of the ink knife with a surface grinder to ensure the flatness and roughness of the wedge-shaped bevel.

[0054] (3) Cut the first ink film with a width of 17MM±0.5MM and the second ink film with a width of 16MM±0.5MM, deburr and polish the edges of the first and second ink films, and clean the ink films to ensure that there is no surface contamination;

[0055] (4) Put a layer of double-sided tape on the ink fountain pressing sheet, align it with the step edge of the installation slot, and flatten the entire strip before tearing off the double-sided tape to ensure that there are no bubbles on the adhesive surface between the tape and the ink fountain pressing sheet to ensure the bonding strength, and then put the first ink fountain sheet on the ink fountain pressing sheet;

[0056] (5) Put a layer of double-sided tape on the first ink fountain sheet, align it with the step edge of the installation slot, align it with the left side, flatten the whole strip, and put the second ink fountain sheet on the first ink fountain sheet;

[0057] (6) Install the fitted ink roller pressure plate assembly on the outside of the ink outlet pressure plate, slightly lock the screws to fix it, slightly move the ink fountain pressure plate to ensure that the distance between the bottom edge of the first ink fountain plate and the tip of the ink knife is 6±0.5mm, and slightly tighten the screws to keep the relative distance between the pressure plate and the ink knife unchanged;

[0058] (7) Tighten the ink fountain pressing piece with force, starting from the middle of the ink knife, and tighten the ink fountain pressing piece to both ends in a regular pattern of left and right. During this period, pay attention to check whether the distance between the bottom edge of the ink fountain piece and the tip of the ink knife is 6±0.5MM, and finally form an ink outlet mechanism;

[0059] (8) Place the wedge-shaped surface of the ink outlet mechanism close to the ink roller so that the ink fountain sheet fits the ink roller.

[0060] Embodiment 2

[0061] The guide surface 10 is a multi-layer stepped type. The ink in the main flow channel 8 is decelerated by the multi-layer guide surface 10 and then enters the ink outlet flow channel 7 .

[0062] The rest of the structure is consistent with that of the first embodiment.

[0063] Embodiment 3

[0064] Only the middle flow channel plate 11 is fixedly connected in the ink outlet cavity 9, and two symmetrical ink outlet channels 7 are formed in the ink outlet cavity 9, so that the ink in the ink outlet cavity 9 can flow out directly through the two ink outlet channels 7, so that the ink output of each ink outlet channel 7 is more uniform.

[0065] The rest of the structure is consistent with that of the first embodiment.

[0066] Embodiment 4

[0067] The ink fountain pressing piece 18 includes a pressing piece portion 23 and an arched portion 24. The arched portion 24 is fixedly connected to the end face of the pressing piece portion 23 to form a spring mounting cavity 25. A pressing piece spring 26 is installed in the spring mounting cavity 25. Through the setting of the pressing piece spring 26, the pressing piece portion 23 is pressed against the ink knife 5, thereby improving the installation strength of the ink fountain sheet 19, preventing the ink fountain sheet 19 from falling off, and preventing ink from seeping out of the threaded hole.

[0068] A through hole 27 is dug on the ink fountain pressing plate 18, and the through hole 27 passes through the pressing plate portion 23 and the arch portion 24. An elastic screw assembly is installed in the through hole 27, and the elastic screw assembly includes a clamping screw 28 and a clamping nut 29. The clamping nut 29 and the clamping screw 28 are threadedly connected and then glued. The two ends of the pressing plate spring 26 are respectively arranged between the clamping nut 29 and the ink outlet pressing plate 6, so that the ink outlet pressing plate 6 is pressed against the ink knife 5, thereby improving the installation strength of the ink outlet pressing plate 6 and preventing ink from seeping out from the installation surfaces of the ink knife 5 and the ink outlet pressing plate 6.

[0069] The end surface of the ink fountain pressing plate 18 is provided with a mounting groove 22 and a countersunk groove 30. The countersunk groove 30 is used to prevent the pressing plate portion 23 from interfering with the screws used to install the ink outlet pressing plate 6. The mounting groove 22 is used to fix and install the ink fountain plate 19.

[0070] The rest of the structure is consistent with that of the first embodiment.

[0071] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0072] Although this article uses more terms corresponding to the figure marks in the figures, it does not exclude the possibility of using other terms; these terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitations is contrary to the spirit of the present invention.

Claims

1. An anti-ink-throwing device for directly supplying ink to a rubber roller, comprising an ink outlet mechanism (1) and an ink roller (2), wherein the ink outlet mechanism (1) is matched with the ink roller (2), and is characterized in that: The ink delivery mechanism (1) comprises an ink delivery assembly (3) for applying ink to an ink roller (2) and an ink roller pressing assembly (4) for scraping the ink on the ink roller (2); the ink roller pressing assembly (4) is mounted on the ink delivery assembly (3), and the ink roller pressing assembly (4) is in contact with the ink roller (2); The ink outlet assembly (3) comprises an ink knife (5) and an ink outlet pressing plate (6); the ink outlet pressing plate (6) is fixedly mounted on the ink knife (5); an ink outlet flow channel (7) is formed between the ink outlet pressing plate (6) and the ink knife (5); The ink roller pressing plate assembly (4) comprises an ink fountain pressing plate (18) and an ink fountain plate (19), wherein the ink fountain pressing plate (18) is fixedly mounted on the outside of the ink outlet pressing plate (6), and the ink fountain plate (19) is fixedly mounted between the ink fountain pressing plate (18) and the ink outlet pressing plate (6), and the ink fountain plate (19) is elastically deformed so as to fit the ink roller (2); A main flow channel (8) and an ink outlet cavity (9) are formed inside the ink knife (5); the main flow channel (8) is communicated with the ink outlet cavity (9); and the ink outlet pressing sheet (6) is fixedly pressed on the ink outlet cavity (9).

2. The ink-spinning prevention device for directly supplying ink to a rubber roller according to claim 1, characterized in that: A flow guide surface (10) is provided in the ink outlet cavity (9), and the opening of the main flow channel (8) faces the flow guide surface (10).

3. The ink-spinning prevention device for directly supplying ink to a rubber roller according to claim 2, characterized in that: A plurality of ink outlet channels (7) are excavated in the ink outlet cavity (9), and a middle channel plate (11) or a side channel plate (12) is formed between adjacent ink outlet channels (7). The side channel plate (12) is symmetrically connected to the ink outlet cavity (9) relative to the middle channel plate (11), and the middle channel plate (11) and the main channel (8) are located on the same straight line.

4. The ink-spinning prevention device for directly supplying ink to a rubber roller according to claim 3, characterized in that: A flow guide plane (13) is provided on the upper end surface of the middle flow channel plate (11), the flow guide plane (13) being perpendicular to the main flow channel (8), and a flow channel plate inclined surface (14) is provided on the upper end surface of the side flow channel plate (12), the edge of the flow guide plane (13) and the flow channel plate inclined surface (14) being located on the same plane.

5. The ink-spinning prevention device for directly supplying ink to a rubber roller according to claim 1, characterized in that: The ink fountain pressing piece (18) comprises a pressing piece portion (23) and an arched portion (24); the arched portion (24) is fixedly connected to the end surface of the pressing piece portion (23) to form a spring mounting cavity (25); and a pressing piece spring (26) is mounted in the spring mounting cavity (25).

6. The ink-spinning prevention device for directly supplying ink to a rubber roller according to claim 1, characterized in that: The lower end surface of the ink knife (5) is wedge-shaped, and the wedge angle of the ink knife (5) is 25° to 35°.

7. The method for installing an anti-ink-spinning device for directly supplying ink to a rubber roller according to any one of claims 1 to 6, characterized in that: The installation steps include: (1) Clean the ink knife installation surface, install the ink pressure piece close to the ink knife groove, and tighten it with screws from the middle to both sides; (2) Reprocess the wedge-shaped bevel of the ink knife with a surface grinder; (3) preparing a first ink fountain film and a second ink fountain film; (4) Attach a layer of double-sided tape to the ink fountain pressing sheet, and attach the first ink fountain sheet to the ink fountain pressing sheet; (5) Attach a layer of double-sided tape to the first ink fountain film, and attach the second ink fountain film to the first ink fountain film; (6) Install the bonded ink roller pressing plate assembly on the outside of the ink outlet pressing plate and fix it with screws slightly locked; (7) Tighten the ink fountain pressing piece with force, starting from the middle of the ink knife, and tighten the ink fountain pressing piece to both ends in a regular pattern of left and right to form an ink outlet mechanism; (8) Place the wedge-shaped surface of the ink outlet mechanism close to the ink roller so that the ink fountain sheet fits the ink roller.

Images