Environmentally friendly printing machine for producing paper and plastic printed products and printing process thereof

Abstract

The present invention relates to the technical field of printing machines, and discloses an environmentally friendly printing machine for producing paper and plastic printed products, including a housing, an ink cartridge, an ink distribution roller, an ink coating roller and a printing roller. A slide groove is provided at the lower part of the left and right side walls of the inner cavity of the ink cartridge, a tension spring is fixedly connected to the top of the slide groove, a slide plate is fixedly connected to the bottom of the tension spring, a connecting rod is fixedly connected to the top surface of the slide plate and located directly below the ink distribution roller, a support rod is fixedly connected to the top surface of the slide plate and located directly below the ink coating roller, and a cam is fixedly sleeved on the outer side of the rotating shaft of the ink distribution roller. The present invention drives the connecting rod to move up and down by the cam, and drives the slide plate to move down by the up and down movement of the connecting rod. When the slide plate moves to the bottom, the potential energy of the tension spring drives the slide plate to move up, and the slide plate is used to make up and down reciprocating motion inside the ink cartridge, thereby stirring the ink inside the ink cartridge, so that the fluidity of the ink is increased, the uniformity of the ink is improved, and the quality of paper and plastic printing is improved.

Description

Technical Field

[0001] The invention relates to the technical field of printing machines, in particular to an environmentally friendly printing machine for producing paper and plastic printed products and a printing process thereof. Background Art

[0002] Paper-plastic printing is the process of printing the text or pattern on the printing plate onto the paper-plastic plate by embossing. It mainly includes components such as ink cartridges, inking rollers, inking rollers, printing rollers, printing plates and embossing rollers. It is a printing press commonly used in letterpress printing.

[0003] However, in the process of using the existing paper and plastic printing, the ink is mainly delivered into the ink cartridge by a pumping mechanism, and the pumping speed of the ink cannot exceed the speed of printing loss. The ink cartridge is long, so the ink in the ink cartridge away from the pumping port flows slowly or even remains stationary, which easily causes the ink in the ink cartridge to precipitate, resulting in uneven ink concentration and poor quality of the printed product. At the same time, since the printing plate is a relief plate, the lines on the printing plate are thick and thin. During the printing process, it is easy for the thin lines to be under insufficient pressure, resulting in unclear printed products, which also affects the quality of the printed products. Summary of the invention

[0004] In view of the shortcomings of the existing printing presses mentioned in the background technology during use, the present invention provides an environmentally friendly printing press for the production of paper and plastic printed products and a printing process thereof, which has the advantages of improving the fluidity of the ink inside the ink cartridge, increasing the uniformity of the ink, and improving the clarity of paper and plastic printing, thereby solving the technical problems raised in the above-mentioned background technology.

[0005] The present invention provides the following technical scheme: an environment-friendly printing machine for producing paper and plastic printed products, comprising a shell, an ink cartridge, an ink distribution roller, an inking roller and a printing roller, wherein a slide groove is provided at the lower part of the left and right side walls of the inner cavity of the ink cartridge, a tension spring is fixedly connected to the top of the slide groove, a slide plate is fixedly connected to the bottom of the tension spring, a connecting rod is fixedly connected to the top surface of the slide plate and located directly below the ink distribution roller, a supporting rod is fixedly connected to the top surface of the slide plate and located directly below the inking roller, a cam is fixedly sleeved on the outer side of the rotating shaft of the ink distribution roller, a groove is provided on the outer surface of the printing roller, a printing plate is slidably connected to the inside of the groove, a cylindrical cavity is provided inside the printing roller, a cylinder is movably sleeved inside the cylindrical cavity and located outside the rotating shaft of the printing roller, an annular airbag is fixedly sleeved on the outer surface of the cylinder, and a through groove is provided inside the printing roller and located outside the cylindrical cavity.

[0006] Preferably, the left and right side surfaces of the slide plate are clearance-fitted with the side walls of the slide groove, and the front and rear side surfaces of the slide plate are in sliding contact with the front and rear side walls of the ink cartridge inner cavity.

[0007] Preferably, the top of the connecting rod is in sliding contact with the outer surface of the cam.

[0008] Preferably, the top of the support rod is an arc-shaped plate, and the curvature of the arc-shaped plate at the top of the support rod is equal to the curvature of the outer surface of the cylinder.

[0009] Preferably, the length of the cylinder is greater than the length of the cylindrical cavity, and the lower portion of the outer surface of the cylinder extending out of the cylindrical cavity is fixedly connected to the top of the support rod.

[0010] Preferably, the outer surface of the outer ring of the annular airbag is fixedly connected to the inner wall of the cylindrical cavity, and the annular airbag is connected to the groove through a through groove.

[0011] Preferably, a movable cavity is opened at the lower part of the inner side of the support rod, and a piston rod is movably connected inside the movable cavity.

[0012] Preferably, the bottom of the movable cavity extends into and penetrates the slide plate.

[0013] Preferably, the rotating shaft of the ink coating roller extends into the interior of the movable cavity, the piston rod is movably sleeved on the outer surface of the rotating shaft of the ink coating roller, and the outer surface of the bottom of the piston rod is in sliding contact with the inner wall of the movable cavity.

[0014] A printing process for producing environmentally friendly paper-plastic printed products, comprising the following steps:

[0015] In the first step, the paper-plastic plate is passed through the gap between the printing plate and the impression roller, and the driving device is turned on to cause the ink distribution roller, the inking roller and the printing roller to rotate, and the paper-plastic plate is printed through the printing plate;

[0016] The second step is to rotate the cam by the rotation of the ink roller, so that the cam cooperates with the tension spring to continuously push the connecting rod up and down, and the connecting rod drives the slide plate to do up and down reciprocating motion, and the up and down reciprocating motion of the slide plate is used to increase the fluidity of the ink inside the ink cartridge;

[0017] The third step is to drive the support rod to move up and down through the up and down reciprocating motion of the slide plate. When the support rod moves down, it drives the cylinder to move down, so that the cylinder squeezes the annular airbag, causing the gas inside the annular airbag to enter the through groove and finally act on the bottom of the printing plate, exerting upward pressure on the printing plate, thereby increasing the pressure of the printing plate on the paper-plastic plate and improving the clarity of the printing;

[0018] The fourth step is to use the up and down movement of the slide plate to cooperate with the piston rod. When the slide plate moves down, the piston rod causes negative pressure to be generated inside the active cavity to absorb the ink, so that the ink enters the active cavity. When the slide plate moves up, the piston rod squeezes out the ink inside the active cavity to increase the fluidity of the ink inside the ink cartridge.

[0019] In the fifth step, the ink inside the movable cavity is squeezed out by the piston rod, so that the pressure of the ink increases. The ink with increased pressure exerts upward pressure on the slide plate and acts on the cylinder through the conduction of the support rod. The cylinder squeezes the annular airbag again, so that the gas inside the annular airbag enters the groove through the through groove and acts on the bottom of the printing plate, further increasing the pressure of the printing plate on the paper-plastic plate when printing, thereby improving the clarity of the print.

[0020] The present invention has the following beneficial effects:

[0021] 1. The present invention designs a slide groove, a tension spring, a slide plate, a connecting rod and a cam. The cam is rotated by the rotation of the ink-distributing roller, and the rotation of the cam is used to drive the connecting rod to move up and down. The slide plate is driven to move down by the up and down movement of the connecting rod. When the slide plate moves to the bottom, the potential energy of the tension spring drives the slide plate to move up. The slide plate is used to make up and down reciprocating motion inside the ink cartridge, thereby stirring the ink inside the ink cartridge, increasing the fluidity of the ink, improving the uniformity of the ink, and thus improving the quality of paper and plastic printing.

[0022] 2. The present invention designs a slide groove, a tension spring, a slide plate, a connecting rod, a support rod, a cam, a groove, a cylindrical cavity, a cylinder, an annular airbag and a through groove, and utilizes the up and down movement of the slide plate to drive the support rod to move up and down reciprocatingly. When the slide plate moves downward, the support rod drives the cylinder downward through the action of the support rod, prompting the cylinder to squeeze the lower part of the annular airbag, so that the gas in the lower part of the annular airbag enters the upper part of the annular airbag. At this time, the printing plate is at the bottom of the groove, and the printing plate cannot move up through the action of the embossing roller. After the gas enters the upper part of the airbag, the air pressure will increase. Utilizing the action of the through groove, the gas directly acts on the bottom of the printing plate, thereby applying pressure to the printing plate, so that the pressure of the printing plate on the paper-plastic plate is increased, thereby increasing the clarity of the embossing and the quality of printing.

[0023] 3. The present invention designs a slide groove, a tension spring, a slide plate, a connecting rod, a supporting rod, a movable chamber and a piston rod. The slide plate moves up and down in coordination with the piston rod. When the slide plate moves down, a negative pressure is generated inside the movable chamber through the action of the piston rod, so that part of the ink inside the ink cartridge is sucked into the movable chamber and is squeezed out by the piston rod when the slide plate moves up. Since the ink inside the movable chamber carries a certain pressure when it is squeezed out, the fluidity of the ink inside the ink cartridge is increased, and the uniformity of the ink is further increased.

[0024] 4. The present invention designs a slide groove, a tension spring, a slide plate, a connecting rod, a support rod, a movable chamber and a piston rod. Since the ink in the movable chamber is squeezed with pressure, the pressure acts on the slide plate indirectly through the conduction of the ink, so that the slide plate will apply pressure upward, which acts on the cylinder through the conduction of the support rod, so that the cylinder squeezes the annular airbag, further promoting the printing of the printing plate on the paper-plastic plate, thereby improving the clarity of the printing. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the three-dimensional structure of the ink cartridge and the printing roller of the present invention;

[0027] Figure 3 It is a schematic diagram of the internal structure of the ink cartridge of the present invention;

[0028] Figure 4 This is a schematic diagram of the three-dimensional structure of the printing roller of the present invention;

[0029] Figure 5 This is a schematic diagram of the internal three-dimensional structure of the printing roller of the present invention;

[0030] Figure 6 It is a schematic diagram of the internal three-dimensional structure of the support rod of the present invention.

[0031] In the figure: 1. shell; 2. ink cartridge; 21. slide groove; 22. tension spring; 23. slide plate; 24. connecting rod; 25. support rod; 26. movable cavity; 27. piston rod; 3. ink distribution roller; 31. cam; 4. inking roller; 5. printing roller; 51. groove; 52. printing plate; 53. cylindrical cavity; 54. cylinder; 55. annular airbag; 56. through groove; 6. embossing roller; 7. paper-plastic board; 8. feeding port. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Embodiment 1

[0034] See also Figure 1-Figure 6 A printing machine for producing environmentally friendly paper and plastic printed products includes a shell 1, an ink cartridge 2 is fixedly installed at the bottom of the inner cavity of the shell 1, an ink distribution roller 3 is rotatably installed inside the ink cartridge 2 through a rotating shaft, an inking roller 4 is rotatably installed inside the ink cartridge 2 and located on the right side of the ink distribution roller 3 through a rotating shaft, a printing roller 5 is rotatably installed in the inner cavity of the shell 1 and located on the upper side of the inking roller 4 through a rotating shaft, an embossing roller 6 is fixedly installed in the inner cavity of the shell 1 and located on the upper side of the printing roller 5, a paper and plastic plate 7 is placed between the printing roller 5 and the embossing roller 6, and a feeding port 8 is opened at the upper part of the left and right side walls of the shell 1.

[0035] See also Figure 1-Figure 6The lower part of the left and right side walls of the inner cavity of the ink cartridge 2 is provided with a slide groove 21, and a tension spring 22 is fixedly welded on the top of the slide groove 21, and a slide plate 23 is fixedly welded on the bottom of the tension spring 22. The left and right sides of the slide plate 23 are clearance-matched with the side walls of the slide groove 21, and the front and rear sides of the slide plate 23 are in sliding contact with the front and rear side walls of the inner cavity of the ink cartridge 2, so that the ink inside the ink cartridge 2 passes through the gap between the slide plate 23 and the slide groove 21, thereby increasing the fluidity of the ink. A connecting rod 24 is fixedly welded on the top surface of the slide plate 23 and located directly below the ink uniform roller 3. A supporting rod 25 is fixedly welded on the top surface of the slide plate 23 and located directly below the ink coating roller 4. A cam 31 is fixedly sleeved on the outer side of the rotating shaft of the ink uniform roller 3. The top of the connecting rod 24 is in sliding contact with the outer surface of the cam 31, ensuring that the connecting rod 24 is driven to move when the cam 31 rotates. A groove 51 is provided on the outer surface of the printing roller 5, and a printing plate 52 is slidably connected to the inside of the groove 51. A cylindrical cavity 53 is provided inside the printing roller 5. A cylinder 54 is movably sleeved inside the column cavity 53 and located on the outside of the rotating shaft of the printing roller 5. The top of the support rod 25 is an arc-shaped plate. The curvature of the arc-shaped plate on the top of the support rod 25 is equal to the curvature of the outer surface of the cylinder 54, which is convenient for the top of the support rod 25 to fit the cylinder 54. The length of the cylinder 54 is greater than the length of the cylindrical cavity 53. The lower part of the outer surface of the cylinder 54 extending out of the outer side of the cylindrical cavity 53 is fixedly connected to the top of the support rod 25, ensuring that the support rod 25 can drive the cylinder 54 to move up when it moves upward. An annular airbag 55 is fixedly sleeved on the outer surface of the cylinder 54. A through groove 56 is provided inside the printing roller 5 and located on the outside of the cylindrical cavity 53. The outer surface of the outer ring of the annular airbag 55 is fixedly connected to the inner side wall of the cylindrical cavity 53. The annular airbag 55 is connected to the groove 51 through the through groove 56. It is ensured that when the annular airbag 55 is squeezed by the cylinder 54, the gas inside the annular airbag 55 can be directly acted on the bottom of the printing plate 52 by the transmission of the through groove 56.

[0036] See also Figure 1-Figure 6 When the printing device is working, the cam 31 is driven to rotate by the rotation of the ink roller 3, and the cam 31 cooperates with the tension spring 22 to make the connecting rod 24 reciprocate up and down, thereby prompting the connecting rod 24 to drive the slide plate 23 to reciprocate up and down. Through the movement of the slide plate 23, the ink inside the ink cartridge 2 is stirred by the slide plate 23. Since there is a gap between the slide plate 23 and the slide groove 21, the ink flows along the gap, thereby increasing the fluidity of the ink inside the ink cartridge 2, improving the uniformity of the ink, and at the same time improving the quality of printing on the paper plastic board 7;

[0037] As the slide plate 23 moves up and down, the cylinder 54 is also driven to move up and down by the connection of the support rod 25, and the annular airbag 55 is squeezed by the movement of the cylinder 54, so that the gas inside the annular airbag 55 is directly acted on the bottom of the printing plate 52 through the transmission of the through groove 56, exerting an upward pressure on the printing plate 52. At this time, the printing plate 52 can no longer move upward, so that the pressure exerted by the gas on the printing plate 52 can only be exerted on the paper-plastic plate 7 by the printing plate 52, thereby improving the clarity of printing on the paper-plastic plate 7.

[0038] A printing process for producing environmentally friendly paper-plastic printed products, comprising the following steps:

[0039] In the first step, the paper-plastic plate 7 is passed through the gap between the printing plate 52 and the embossing roller 6, and the driving device is turned on to cause the ink distribution roller 3, the inking roller 4 and the printing roller 5 to rotate, and the paper-plastic plate 7 is printed through the printing plate 52;

[0040] In the second step, the cam 31 is driven to rotate by the rotation of the ink distribution roller 3, so that the cam 31 cooperates with the tension spring 22 to continuously push the connecting rod 24 to move up and down, and the connecting rod 24 drives the slide plate 23 to do up and down reciprocating motion, and the up and down reciprocating motion of the slide plate 23 is used to increase the fluidity of the ink inside the ink cartridge 2;

[0041] In the third step, the support rod 25 is driven to move up and down by the reciprocating up and down motion of the slide plate 23. When the support rod 25 moves down, the cylinder 54 is driven to move down, so that the cylinder 54 squeezes the annular airbag 55, causing the gas inside the annular airbag 55 to enter the through groove 56 and finally act on the bottom of the printing plate 52, exerting upward pressure on the printing plate 52, thereby increasing the pressure of the printing plate 52 on the paper-plastic plate 7 for printing, and improving the clarity of printing;

[0042] In the fourth step, the sliding plate 23 is moved up and down in coordination with the piston rod 27. When the sliding plate 23 moves down, the piston rod 27 generates negative pressure inside the active cavity 26 to absorb the ink, so that the ink enters the active cavity 26. When the sliding plate 23 moves up, the piston rod 27 squeezes out the ink inside the active cavity 26, thereby increasing the fluidity of the ink inside the ink cartridge 2.

[0043] In the fifth step, the ink in the movable chamber 26 is squeezed out by the piston rod 27, so that the pressure of the ink increases. The ink with increased pressure exerts upward pressure on the slide plate 23 and acts on the cylinder 54 through the conduction of the support rod 25. The cylinder 54 squeezes the annular airbag 55 again, so that the gas inside the annular airbag 55 enters the groove 51 through the through groove 56 and acts on the bottom of the printing plate 52, further increasing the pressure of the printing plate 52 on the paper-plastic plate 7 when printing, thereby improving the clarity of printing.

[0044] The method of use (working principle) of the first embodiment of the present invention is as follows:

[0045] First, the paper plastic plate 7 is passed through the gap between the printing plate 52 and the embossing roller 6, and the driving device drives the ink distribution roller 3, the inking roller 4 and the printing roller 5 to rotate, and the paper plastic plate 7 is printed. When the ink distribution roller 3 rotates, the cam 31 is driven to rotate, and the connection rod 24 is made to reciprocate up and down through the cooperation of the cam 31 and the tension spring 22, and the connection rod 24 drives the slide plate 23 to reciprocate up and down. The movement of the slide plate 23 is used to increase the fluidity of the ink inside the ink cartridge 2. At the same time, it is connected to the cylinder 54 through the support rod 25, so that the slide plate 23 drives the cylinder 54 to reciprocate up and down, so that the cylinder 54 squeezes the annular airbag 55, so that the gas inside the annular airbag 55 is directly acted on the bottom of the printing plate 52 through the transmission of the through groove 56, thereby increasing the pressure of the printing plate 52 on the paper plastic plate 7.

[0046] Embodiment 2

[0047] See also Figure 1-Figure 6 A slide groove 21 is provided at the lower part of the left and right side walls of the inner cavity of the ink cartridge 2, and a tension spring 22 is fixedly welded to the top of the slide groove 21, and a slide plate 23 is fixedly welded to the bottom of the tension spring 22. A connecting rod 24 is fixedly welded to the top surface of the slide plate 23 and located directly below the ink uniform roller 3, and a support rod 25 is fixedly welded to the top surface of the slide plate 23 and located directly below the ink coating roller 4. A movable cavity 26 is provided at the lower part of the inner side of the support rod 25, and the bottom of the movable cavity 26 extends into the slide plate 23 and penetrates the slide plate 23, so that the movable cavity 26 is connected to the inner cavity of the ink cartridge 2 to ensure the fluidity of the ink, and the interior of the movable cavity 26 is movably connected with a piston rod 27, and the rotating shaft of the ink coating roller 4 extends into the interior of the movable cavity 26, and the piston rod 27 is movably sleeved on the outer surface of the rotating shaft of the ink coating roller 4, and the outer surface of the bottom of the piston rod 27 is in sliding contact with the inner side wall of the movable cavity 26, ensuring that when the support rod 25 drives the movable cavity 26 to move, the position of the piston rod 27 does not move, thereby realizing the ink suction action.

[0048] See also Figure 1-Figure 6 When the cam 31 drives the slide plate 23 downward through the connection of the connecting rod 24, the slide plate 23 drives the support rod 25 downward, and the piston rod 27 is sleeved on the rotating shaft of the ink coating roller 4, so that the position of the piston rod 27 is fixed. At this time, through the cooperation between the active chamber 26 and the piston rod 27, negative pressure is generated in the active chamber 26, so that part of the ink in the ink cartridge 2 is sucked into the active chamber 26. Then, the slide plate 23 drives the support rod 25 upward again, so that the piston rod 27 squeezes the ink inside the active chamber 26, so that the ink in the active chamber 26 is squeezed out, thereby further increasing the fluidity and uniformity of the ink inside the ink cartridge 2, and improving the printing quality;

[0049] Secondly, since the ink in the active chamber 26 is under pressure when it is squeezed out by the piston rod 27, a reaction force is applied to the slide plate 23 when the ink is squeezed out, thereby causing the slide plate 23 to move upward, and then the cylinder 54 is driven upward through the support rod 25 to squeeze the annular airbag 55, so that the gas inside the annular airbag 55 acts on the printing plate 52 through the through groove 56, thereby promoting the printing of the paper-plastic plate 7 by the printing plate 52, and further improving the clarity of the paper-plastic plate 7 when printing.

[0050] The method of use (working principle) of the second embodiment of the present invention is as follows:

[0051] When the slide plate 23 moves downward under the action of the connecting rod 24, the slide plate 23 drives the support rod 25 to move downward, while the piston rod 27 remains unchanged. By utilizing the cooperation between the active cavity 26 on the support rod 25 and the piston rod 27, negative pressure is generated inside the active cavity 26, thereby sucking part of the ink in the ink cartridge 2 into the active cavity 26, and the slide plate 23 drives the support rod 25 to move upward again, prompting the piston rod 27 to squeeze out the ink in the active cavity 26, thereby improving the fluidity and uniformity of the ink.

[0052] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An environmentally friendly printing machine for producing paper and plastic printed products, comprising a housing (1), an ink cartridge (2), an ink distribution roller (3), an inking roller (4) and a printing roller (5), characterized in that: A slide groove (21) is provided at the lower part of the left and right side walls of the inner cavity of the ink cartridge (2); a tension spring (22) is fixedly connected to the top of the slide groove (21); a slide plate (23) is fixedly connected to the bottom of the tension spring (22); a connecting rod (24) is fixedly connected to the top surface of the slide plate (23) and located directly below the ink distribution roller (3); a supporting rod (25) is fixedly connected to the top surface of the slide plate (23) and located directly below the ink coating roller (4); a cam (36) is fixedly sleeved on the outer side of the rotating shaft of the ink distribution roller (3); 1), a groove (51) is provided on the outer surface of the printing roller (5), a printing plate (52) is slidably connected inside the groove (51), a cylindrical cavity (53) is provided inside the printing roller (5), a cylinder (54) is movably sleeved inside the cylindrical cavity (53) and located outside the rotating shaft of the printing roller (5), an annular air bag (55) is fixedly sleeved on the outer surface of the cylinder (54), and a through groove (56) is provided inside the printing roller (5) and located outside the cylindrical cavity (53); A movable chamber (26) is provided at the lower portion of the inner side of the support rod (25), and a piston rod (27) is movably connected inside the movable chamber (26).

2. The environmentally friendly printing press for producing paper and plastic printed products according to claim 1, characterized in that: The left and right side surfaces of the slide plate (23) are clearance-matched with the side walls of the slide groove (21), and the front and rear side surfaces of the slide plate (23) are in sliding contact with the front and rear side walls of the inner cavity of the ink cartridge (2).

3. The environmentally friendly printing press for producing paper and plastic printed products according to claim 1, characterized in that: The top of the connecting rod (24) is in sliding contact with the outer surface of the cam (31).

4. The environmentally friendly printing press for producing paper and plastic printed products according to claim 1, characterized in that: The top of the support rod (25) is an arc-shaped plate, and the curvature of the arc-shaped plate at the top of the support rod (25) is equal to the curvature of the outer surface of the cylinder (54).

5. The environmentally friendly printing press for producing paper and plastic printed products according to claim 1, characterized in that: The length of the cylinder (54) is greater than the length of the cylindrical cavity (53); the lower portion of the outer surface of the cylinder (54) extending out of the outer side of the cylindrical cavity (53) is fixedly connected to the top of the support rod (25).

6. The environmentally friendly printing press for producing paper and plastic printed products according to claim 1, characterized in that: The outer surface of the outer ring of the annular airbag (55) is fixedly connected to the inner wall of the cylindrical cavity (53), and the annular airbag (55) is connected to the groove (51) via the through groove (56).

7. The environmentally friendly printing press for producing paper and plastic printed products according to claim 1, characterized in that: The bottom of the movable cavity (26) extends into the slide plate (23) and penetrates the slide plate (23).

8. The environmentally friendly printing machine for producing paper and plastic printed products according to claim 1, characterized in that: The rotating shaft of the ink coating roller (4) extends into the interior of the movable chamber (26), the piston rod (27) is movably sleeved on the outer surface of the rotating shaft of the ink coating roller (4), and the outer surface of the bottom of the piston rod (27) is in sliding contact with the inner wall of the movable chamber (26).

9. A printing process for producing environmentally friendly paper-plastic printed products, characterized in that: The following steps are involved: The first step is to pass the paper-plastic board (7) through the gap between the printing plate (52) and the embossing roller (6), and start the driving device to cause the ink distribution roller (3), the ink coating roller (4) and the printing roller (5) to rotate, so as to print the paper-plastic board (7) through the printing plate (52); In the second step, the cam (31) is driven to rotate by the rotation of the ink distribution roller (3), so that the cam (31) cooperates with the tension spring (22) to continuously push the connecting rod (24) to move up and down, and the connecting rod (24) drives the slide plate (23) to make an up and down reciprocating motion, and the up and down reciprocating motion of the slide plate (23) is used to increase the fluidity of the ink inside the ink cartridge (2); In the third step, the support rod (25) is driven to move up and down by the up and down reciprocating motion of the slide plate (23). When the support rod (25) moves downward, the cylinder (54) is driven to move downward, so that the cylinder (54) squeezes the annular airbag (55), causing the gas inside the annular airbag (55) to enter the through groove (56) and finally act on the bottom of the printing plate (52), exerting upward pressure on the printing plate (52), thereby increasing the pressure of the printing plate (52) on the paper-plastic plate (7) for printing, and improving the clarity of printing; In the fourth step, the sliding plate (23) is moved up and down in coordination with the piston rod (27). When the sliding plate (23) moves down, the piston rod (27) causes negative pressure to be generated inside the movable chamber (26) to absorb the ink, so that the ink enters the movable chamber (26). When the sliding plate (23) moves up, the piston rod (27) causes the ink inside the movable chamber (26) to be squeezed out, thereby increasing the fluidity of the ink inside the ink cartridge (2); In the fifth step, the ink in the movable chamber (26) is squeezed out by the piston rod (27), so that the pressure of the ink increases. The ink with increased pressure exerts an upward pressure on the slide plate (23), and acts on the cylinder (54) through the conduction of the support rod (25). The cylinder (54) squeezes the annular airbag (55) again, so that the gas in the annular airbag (55) enters the groove (51) through the through groove (56) and acts on the bottom of the printing plate (52), further increasing the pressure of the printing plate (52) on the paper-plastic plate (7) during printing, thereby improving the clarity of printing.

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