Printing pressure adjusting mechanism of printing equipment

Abstract

The utility model relates to the technical field of printing equipment, in particular to a printing pressure adjusting mechanism of printing equipment, which comprises a rack, a printing roller and a pressure roller, the printing roller is rotatably arranged on the rack, a rotating part for driving the printing roller to rotate is arranged on the rack, the pressure roller is positioned right above the printing roller, and end seats are arranged at two ends of the pressure roller; the end base is vertically arranged on the rack in a sliding mode, a sliding groove for the end base to slide is formed in the rack, a driving piece for driving the end base to slide is arranged on the rack, a pressure adjusting piece is arranged on the end base, and the pressure adjusting piece is used for adjusting the pressure change between the printing roller and the pressure roller. The printing device has the effect of improving the printing quality of printing paper with different thicknesses.

Description

Technical Field

[0001] The present application relates to the technical field of printing equipment, and in particular to a printing pressure adjustment mechanism of a printing equipment. Background Art

[0002] A printing press is a machine used to print text and images. It primarily consists of mechanisms such as plate mounting, inking, embossing, and paper feeding. Its working principle is to create a printing plate with the text and image to be printed, mount it on the press, apply ink, and then transfer the ink to paper or other substrates, producing a printed product identical to the plate. The invention and development of the printing press have played a significant role in the spread of human civilization and culture.

[0003] The announcement number CN210366114U is a new printing pressure adjustment mechanism for a printing press, which is roughly described as including a machine body, a groove is provided inside the upper end of the machine body, a guide rod is provided inside the groove, a connecting structure is slidably sleeved inside the groove, a first spring is sleeved inside the groove, the lower end of the connecting structure is fixedly connected to a support frame, and the lower end of the support frame is fixedly connected to a support plate, which generates a force on the connecting mechanism through the first spring, so that the upper roller is close to the lower roller.

[0004] During the use of the above technology, since the thickness of the paper printed each time may be inconsistent, the thickness of each printed paper at different positions may also be inconsistent, and the force of the upper roller against the lower roller depends on the deformation of the first spring, resulting in inconsistent pressure on printed papers of different thicknesses, thereby causing large differences in the printing effects of printed papers of different thicknesses and at different thickness positions of the printed paper, which has shortcomings. Utility Model Content

[0005] In order to improve the problem of large differences in printing effects between printing papers of different thicknesses, the present application provides a printing pressure adjustment mechanism for a printing device.

[0006] The printing pressure adjustment mechanism of the printing equipment provided in this application adopts the following technical solution:

[0007] A printing pressure adjustment mechanism of a printing device includes a frame, a printing roller and a pressure roller, the printing roller is rotatably arranged on the frame, the frame is provided with a rotating member for driving the printing roller to rotate, the pressure roller is located directly above the printing roller, both ends of the pressure roller are provided with end seats, the end seats are vertically slidably arranged on the frame, the frame is provided with a slide groove for the end seats to slide, the frame is provided with a driving member for driving the end seats to slide, and the end seats are provided with a pressure regulating member, and the pressure regulating member is used to adjust the pressure change between the printing roller and the pressure roller.

[0008] By adopting the above technical solution, after the printing paper passes between the printing roller and the pressure roller, the driving member drives the end seat close to the printing roller, so that the pressure roller presses the printing paper against the printing roller, and then the rotating member drives the printing roller to rotate, so that the printing paper is printed and conveyed forward at the same time. During the transportation of the printing paper, the pressure regulating member continuously adjusts the pressure value of the printing paper at different thickness positions, so that the printing pressure value of the surface of the printing paper is at the same value, thereby ensuring the printing quality of the printing paper.

[0009] Optionally, the driving member includes an electric cylinder arranged on the frame and electrically connected to a control system, and the end seat is arranged on a piston rod of the electric cylinder.

[0010] By adopting the above technical solution, the displacement of the end seat can be accurately adjusted according to the different thicknesses of printing paper, thereby facilitating the accurate control of the pressure value applied to the printing paper.

[0011] Optionally, the pressure regulating part includes mounting blocks rotatably arranged at both ends of the pressure roller, a pressure groove for the mounting block to slide is vertically opened on the end seat, a lower pressure spring is supported between the mounting block and the bottom of the pressure groove, a pressure sensor electrically connected to the control system is provided at the top of the pressure groove, and an upper pressure spring is supported between the mounting block and the sensing end of the pressure sensor.

[0012] By adopting the above technical solution, when the pressure roller presses the printing paper against the printing roller, the pressure roller first contacts the printing paper. As the end seat continues to descend, the upper pressure spring is squeezed and shrinks, and the lower pressure spring recovers, thereby changing the pressure value of the sensing end of the pressure sensor. The pressure sensor feeds back the pressure signal to the control system until the designed pressure value is reached. When the thickness of the printing paper changes, the control system starts the electric cylinder so that the piston rod of the electric cylinder drives the end seat to move vertically, thereby changing the pressure change of the upper pressure spring, so that the pressure value of the sensing end of the pressure sensor is in dynamic change, thereby ensuring that the pressure value of the printing paper during the printing process tends to be consistent, thereby improving the printing quality.

[0013] Optionally, the rotating member includes a rotating motor disposed on the frame and electrically connected to a control system, and the printing roller is coaxially disposed on an output shaft of the rotating motor.

[0014] By adopting the above technical solution, the control system starts the rotating motor, and the output shaft of the rotating motor drives the printing roller to rotate, thereby realizing printing and conveying the printing paper.

[0015] Optionally, ink shielding plates are slidably provided on the frame and at both ends along the axis direction of the printing roller, an adjusting bolt is bolted on the frame, the ink shielding plates are rotatably engaged with the adjusting bolt, a guide rod parallel to the axis of the adjusting bolt is provided on the ink shielding plates, and the guide rod is slidably engaged with the frame.

[0016] By adopting the above technical solution, workers can turn the adjusting bolt to move the ink shield plate close to the printing roller, thereby blocking the ink at the end of the printing roller, thereby reducing the possibility of ink spreading to the end of the printing roller.

[0017] Optionally, an ink scraping plate is provided on the frame, an ink smearing strip is provided on the ink scraping plate, the ink smearing strip is close to the printing roller, and the ink smearing strip is close to the printing roller and located between the two ink shielding plates.

[0018] By adopting the above technical solution, the outer surface of the printing roller after printing is smoothed by the ink smearing strip, which reduces the possibility of ink on the surface of the printing roller causing a decrease in printing quality due to uneven ink surface, and is conducive to improving the printing effect of the printing paper.

[0019] Optionally, the ink strip is arranged tilted from top to bottom toward the printing roller, the ink shield is arranged tilted from top to bottom toward the ink strip, and the lower part of the ink shield is higher than the lower part of the ink strip.

[0020] By adopting the above technical solution, the ink diffused to the end of the printing roller is blocked by the ink shield plate and flows toward the ink smearing strip at the inclined angle of the ink shield plate. Under the smoothing effect of the ink smearing strip, the ink is evenly spread on the surface of the printing roller, thereby improving the printing effect of the printing paper.

[0021] Optionally, an ink receiving tray is provided on the frame and below the printing roller.

[0022] By adopting the above technical solution, part of the dripping ink will fall on the ink receiving tray, thereby reducing the contamination of the ink to the frame and helping to reduce the difficulty of ink processing.

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

[0024] 1. After the printing paper passes between the printing roller and the pressure roller, the driving component drives the end seat close to the printing roller, causing the pressure roller to press the printing paper against the printing roller. The rotating component then drives the printing roller to rotate, so that the printing paper is printed and transported forward at the same time. During the transportation of the printing paper, the pressure regulating component continuously adjusts the pressure value at different thickness positions of the printing paper, so that the printing pressure value on the surface of the printing paper is at the same value, thereby ensuring the printing quality of the printing paper;

[0025] 2. When the pressure roller presses the printing paper against the printing roller, the pressure roller first contacts the printing paper. As the end seat continues to descend, the upper pressure spring is squeezed and shrinks, and the lower pressure spring recovers, causing the pressure value on the sensing end of the pressure sensor to change. The pressure sensor feeds back the pressure signal to the control system until the designed pressure value is reached. When the thickness of the printing paper changes, the control system starts the electric cylinder so that the piston rod of the electric cylinder drives the end seat to move vertically, thereby changing the pressure change on the upper pressure spring, so that the pressure value on the sensing end of the pressure sensor is in dynamic change, thereby ensuring that the pressure value on the printing paper during the printing process tends to be consistent, thereby improving the printing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural diagram of an embodiment of the present application.

[0027] Figure 2 It is a structural diagram used to reflect the positional relationship among the pressure spring, the pressure sensor and the printing roller in the embodiment of the present application.

[0028] Explanation of the accompanying symbols: 0. Printing paper; 1. Frame; 2. Printing roller; 3. Pressure roller; 4. Rotating part; 41. Rotating motor; 5. End seat; 6. Slide; 7. Driving part; 71. Electric cylinder; 8. Pressure regulating part; 81. Mounting block; 82. Pressure groove; 83. Lower pressure spring; 84. Pressure sensor; 85. Upper pressure spring; 9. Ink shield; 10. Adjusting bolt; 11. Guide rod; 12. Ink scraper; 13. Ink strip; 14. Ink receiving tray. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-2 This application is described in further detail.

[0030] An embodiment of the present application discloses a printing pressure adjustment mechanism for a printing device.

[0031] Reference Figure 1 A printing pressure adjustment mechanism of a printing device includes a frame 1, a printing roller 2 and a pressure roller 3. The printing roller 2 is connected to the frame 1 in a horizontally rotatable manner. An ink receiving tray 14 is arranged on the frame 1 and below the printing roller 2. A rotating part 4 for driving the printing roller 2 to rotate is arranged on the frame 1.

[0032] Reference Figure 1 and Figure 2The rotating part 4 includes a rotating motor 41 bolted to the frame 1 and electrically connected to the control system. The printing roller 2 is coaxially welded to the output shaft of the rotating motor 41. Ink shielding plates 9 are slidingly arranged on the frame 1 and at both ends along the axial direction of the printing roller 2. An adjusting bolt 10 is bolted to the frame 1, and the ink shielding plate 9 rotates in conjunction with the adjusting bolt 10. A guide rod 11 parallel to the axis of the adjusting bolt 10 is welded on the ink shielding plate 9, and the guide rod 11 slides in conjunction with the frame 1.

[0033] Reference Figure 1 and Figure 2 A scraper 12 is bolted to the frame 1, and an ink smearing strip 13 is bolted to the scraper 12. The ink smearing strip 13 is close to the printing roller 2 and is located between the two ink shielding plates 9. The ink smearing strip 13 is arranged tilted toward the printing roller 2 from top to bottom. The lower part of the ink smearing strip 13 is close to the printing roller 2, and the ink shielding plates 9 are arranged tilted toward the ink smearing strip 13 from top to bottom. The lower part of the inclination of the ink shielding plates 9 is higher than the lower part of the inclination of the ink smearing strip 13.

[0034] Reference Figure 1 and Figure 2 The pressure roller 3 is located directly above the printing roller 2. End seats 5 are arranged at both ends of the pressure roller 3. The end seats 5 are arranged on the frame 1 for vertical sliding. A slide groove 6 for the end seat 5 to slide is provided on the frame 1. A driving member 7 for driving the end seat 5 to slide is arranged on the frame 1.

[0035] After the worker passes the printing paper 0 between the printing roller 2 and the pressure roller 3, the driving member 7 drives the end seat 5 to approach the printing roller 2, and the end seat 5 drives the pressure roller 3 to press the printing paper 0 against the printing roller 2. Then the control system starts the rotating motor 41, and the output shaft of the rotating motor 41 drives the printing roller 2 to rotate.

[0036] During the rotation of the printing roller 2, the ink strip 13 spreads the ink on the surface of the printing roller 2, and at the same time the ink shield 9 prevents the ink from spreading to the end of the printing roller 2. As the printing roller 2 rolls, the printing paper 0 is printed, and at the same time the printing paper 0 is transported along the rolling direction of the printing roller 2, thereby realizing the printing operation.

[0037] Reference Figure 1 and Figure 2 The driving member 7 includes an electric cylinder 71 bolted to the frame 1 and electrically connected to the control system. The end seat 5 is bolted to the piston rod of the electric cylinder 71. A pressure regulating member 8 is arranged on the end seat 5. The pressure regulating member 8 is used to adjust the pressure change between the printing roller 2 and the pressure roller 3.

[0038] Reference Figure 1 and Figure 2The pressure regulating part 8 includes a mounting block 81 rotatably arranged at both ends of the pressure roller 3. A pressure groove 82 for the mounting block 81 to slide is vertically opened on the end seat 5. A lower pressure spring 83 is supported between the mounting block 81 and the bottom of the pressure groove 82. A pressure sensor 84 electrically connected to the control system is bolted to the top of the pressure groove 82. An upper pressure spring 85 is supported between the mounting block 81 and the sensing end of the pressure sensor 84.

[0039] The control system starts the electric cylinder 71, and the piston rod of the electric cylinder 71 drives the end seat 5 to continuously approach the printing roller 2 until the printing paper 0 is pressed against the printing roller 2. During this process, since the position of the printing roller 2 cannot be moved, the pressure roller 3 presses the printing paper 0 against the printing roller 2. As the end seat 5 continues to descend, the upper compression spring 85 is squeezed and compressed and deformed, and the lower compression spring 83 recovers its deformation.

[0040] The upper compression spring 85 is compressed, causing the pressure value on the sensing end of the pressure sensor 84 to change. The pressure sensor 84 feeds back the pressure signal to the control system until the designed pressure value is reached. At this time, the control system stops the electric cylinder 71 from working, and the printed paper 0 is continuously printed as it is transported.

[0041] When the thickness of the printing paper 0 changes, the pressure sensor 84 feeds back the pressure change signal to the control system. The control system starts the electric cylinder 71, so that the piston rod of the electric cylinder 71 drives the end seat 5 to move vertically, thereby changing the pressure on the upper compression spring 85, so that the pressure value on the sensing end of the pressure sensor 84 continues to approach the designed pressure value, thereby ensuring that the pressure value on the printing paper 0 during the printing process tends to be consistent.

[0042] The implementation principle of the printing pressure adjustment mechanism of a printing device in an embodiment of the present application is: after the worker passes the printing paper 0 between the printing roller 2 and the pressure roller 3, the driving member 7 drives the end seat 5 to approach the printing roller 2, and the end seat 5 drives the pressure roller 3 to press the printing paper 0 against the printing roller 2, and then the control system starts the rotating motor 41, and the output shaft of the rotating motor 41 drives the printing roller 2 to rotate.

[0043] During the rotation of the printing roller 2, the ink strip 13 spreads the ink on the surface of the printing roller 2, and at the same time the ink shield 9 prevents the ink from spreading to the end of the printing roller 2. As the printing roller 2 rolls, the printing paper 0 is printed, and at the same time the printing paper 0 is transported along the rolling direction of the printing roller 2, thereby realizing the printing operation.

[0044] The control system starts the electric cylinder 71, and the piston rod of the electric cylinder 71 drives the end seat 5 to continuously approach the printing roller 2 until the printing paper 0 is pressed against the printing roller 2. During this process, since the position of the printing roller 2 cannot be moved, the pressure roller 3 presses the printing paper 0 against the printing roller 2. As the end seat 5 continues to descend, the upper compression spring 85 is squeezed and compressed and deformed, and the lower compression spring 83 recovers its deformation.

[0045] The upper compression spring 85 is compressed, causing the pressure value on the sensing end of the pressure sensor 84 to change. The pressure sensor 84 feeds back the pressure signal to the control system until the designed pressure value is reached. At this time, the control system stops the electric cylinder 71 from working, and the printed paper 0 is continuously printed as it is transported.

[0046] When the thickness of the printing paper 0 changes, the pressure sensor 84 feeds back the pressure change signal to the control system. The control system starts the electric cylinder 71, so that the piston rod of the electric cylinder 71 drives the end seat 5 to move vertically, thereby changing the pressure on the upper compression spring 85, so that the pressure value on the sensing end of the pressure sensor 84 continues to approach the designed pressure value, thereby ensuring that the pressure value on the printing paper 0 during the printing process tends to be consistent.

[0047] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A printing pressure adjustment mechanism for a printing device, characterized in that: The invention comprises a frame (1), a printing roller (2) and a pressure roller (3), wherein the printing roller (2) is rotatably arranged on the frame (1), a rotating member (4) for driving the printing roller (2) to rotate is provided on the frame (1), the pressure roller (3) is located directly above the printing roller (2), end seats (5) are provided at both ends of the pressure roller (3), the end seats (5) are vertically slidably arranged on the frame (1), a slide groove (6) for the end seats (5) to slide is provided on the frame (1), a driving member (7) for driving the end seats (5) to slide is provided on the frame (1), a pressure regulating member (8) is provided on the end seats (5), and the pressure regulating member (8) is used to adjust the pressure change between the printing roller (2) and the pressure roller (3).

2. The printing pressure adjustment mechanism of a printing device according to claim 1, characterized in that: The driving member (7) comprises an electric cylinder (71) arranged on the frame (1) and electrically connected to a control system, and the end seat (5) is arranged on a piston rod of the electric cylinder (71).

3. The printing pressure adjustment mechanism of a printing device according to claim 2, characterized in that: The pressure regulating member (8) includes a mounting block (81) rotatably arranged at both ends of the pressure roller (3); a pressure groove (82) for the sliding movement of the mounting block (81) is vertically opened on the end seat (5); a lower pressure spring (83) is supported between the mounting block (81) and the bottom of the pressure groove (82); a pressure sensor (84) electrically connected to a control system is provided at the top of the pressure groove (82); and an upper pressure spring (85) is supported between the mounting block (81) and the sensing end of the pressure sensor (84).

4. The printing pressure adjustment mechanism of a printing device according to claim 1, characterized in that: The rotating member (4) comprises a rotating motor (41) arranged on the frame (1) and electrically connected to a control system, and the printing roller (2) is coaxially arranged on an output shaft of the rotating motor (41).

5. The printing pressure adjustment mechanism of a printing device according to claim 4, characterized in that: An ink shield plate (9) is slidably provided on the frame (1) and at both ends along the axial direction of the printing roller (2); an adjusting bolt (10) is bolted to the frame (1); the ink shield plate (9) and the adjusting bolt (10) are rotatably matched; a guide rod (11) parallel to the axis of the adjusting bolt (10) is provided on the ink shield plate (9); the guide rod (11) is slidably matched with the frame (1).

6. The printing pressure adjustment mechanism of a printing device according to claim 5, characterized in that: The frame (1) is provided with an ink scraping plate (12), and an ink wiping strip (13) is provided on the ink scraping plate (12). The ink wiping strip (13) is close to the printing roller (2), and the ink wiping strip (13) is close to the printing roller (2) and is located between the two ink shielding plates (9).

7. The printing pressure adjustment mechanism of a printing device according to claim 6, characterized in that: The ink smear strip (13) is arranged tilted from top to bottom toward the printing roller (2), and the ink shielding plate (9) is arranged tilted from top to bottom toward the ink smear strip (13), and the lower tilted part of the ink shielding plate (9) is higher than the lower tilted part of the ink smear strip (13).

8. The printing pressure adjustment mechanism of a printing device according to claim 6, characterized in that: An ink receiving tray (14) is provided on the frame (1) and below the printing roller (2).

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