Pressure regulating mechanism and printing apparatus

Abstract

This application provides a pressure regulating mechanism and printing equipment, belonging to the technical field of printing equipment. The pressure regulating mechanism includes a frame; a first roller body rotatably mounted on the frame; a first pressure regulating assembly, including an operating-side first pressure regulating unit and a transmission-side first pressure regulating unit respectively disposed at opposite ends of the first roller body; both the operating-side and transmission-side first pressure regulating units include a first pressure regulating drive component, a first eccentric mechanism, and a first transmission component. The first pressure regulating drive component is fixedly mounted on the frame, and its drive end is connected to the first eccentric mechanism. The first transmission component is rotatably mounted on the frame and rests on the first eccentric mechanism; a support component is swayably mounted on the frame and rests on the first transmission component; a second roller body, with its opposite ends resting on the two support components. Under the drive of the first pressure regulating drive component, the support components oscillate, thereby achieving pressure regulation between the two roller bodies.

Description

Technical Field

[0001] This application belongs to the field of printing equipment technology, and more specifically, relates to a pressure regulating mechanism and printing equipment. Background Technology

[0002] In printing equipment, the pressure regulation between the plate roller, substrate roller, and anilox roller directly affects print quality and equipment stability. Traditional pressure regulation methods mainly rely on manual experience, achieving pressure control by manually adjusting the gap between the rollers. However, manual operation makes it difficult to ensure pressure uniformity, resulting in low adjustment precision and easily leading to problems such as uneven ink color, dot distortion, or excessively deep indentations on the substrate. Moreover, manual operation depends on the experience of the technicians. Utility Model Content

[0003] The purpose of this application is to provide a pressure regulating mechanism and printing equipment to solve the technical problem in the prior art that the adjustment of the roller gap in printing equipment relies on manual labor and has low precision.

[0004] To achieve the above objectives, the technical solution adopted in this application is: to provide a pressure regulating mechanism, comprising:

[0005] frame;

[0006] The first roller is rotatably mounted on the frame;

[0007] The first pressure regulating assembly includes an operation-side first pressure regulating unit and a transmission-side first pressure regulating unit, wherein the operation-side first pressure regulating unit and the transmission-side first pressure regulating unit are respectively disposed at opposite ends of the first roller body;

[0008] Both the first pressure regulating unit on the operating side and the first pressure regulating unit on the transmission side include a first pressure regulating drive, a first eccentric mechanism and a first transmission component. The first pressure regulating drive is fixedly installed on the frame, and the drive end of the first pressure regulating drive is connected to the first eccentric mechanism. The first transmission component is rotatably installed on the frame and supported by the first eccentric mechanism.

[0009] A support member, which is swayably mounted on the frame and rests on the first transmission member;

[0010] The second roller body, with its two opposite ends correspondingly mounted on the two supporting members;

[0011] Driven by the two first pressure regulating drives, the support oscillates relative to the frame to adjust the center distance between the first roller and the second roller.

[0012] Optionally, the support member is fan-shaped, and the first transmission member has a first arc surface on the side facing the support member, the first arc surface being tangent to the support member.

[0013] Optionally, the second roller is a printing plate roller, and the pressure adjusting mechanism further includes:

[0014] The third roller is rotatably mounted on the frame;

[0015] The second pressure regulating assembly includes an operation-side second pressure regulating unit and a transmission-side second pressure regulating unit, wherein the operation-side second pressure regulating unit and the transmission-side second pressure regulating unit are respectively disposed at opposite ends of the third roller body;

[0016] Both the operating side second pressure regulating unit and the transmission side second pressure regulating unit include a second pressure regulating drive, a second eccentric mechanism, and a second transmission component. The second pressure regulating drive is fixedly installed on the frame, and the drive end of the second pressure regulating drive is connected to the second eccentric mechanism. The second transmission component is rotatably installed on the frame and supported on the second eccentric mechanism. The second transmission component and the first transmission component are arranged symmetrically, and the support component is supported on the first transmission component and the second transmission component.

[0017] Driven by the two second pressure regulating drives, the support oscillates relative to the frame to adjust the center distance between the second roller and the third roller.

[0018] Optionally, the first transmission member has a first lug at one end connected to the frame, and the second transmission member has a second lug at one end connected to the frame. A rotating shaft is mounted on the frame, and both the first lug and the second lug are rotatably sleeved on the rotating shaft.

[0019] Optionally, it also includes a third driving component and a transmission unit. The third driving component is connected to the rotating shaft via the transmission unit. Under the drive of the third driving component, the rotating shaft drives the second roller to move up and down, so as to realize the pressure division and pressure convergence between the second roller and the first and third rollers.

[0020] Optionally, the second transmission member has a second arcuate surface on the side facing the support member, and the second arcuate surface is tangent to the support member.

[0021] Optionally, the first transmission member and the second transmission member are arranged in a V-shape.

[0022] Optionally, it also includes a support platform and a connecting shaft, wherein the support platform is fixed to the frame, one end of the connecting shaft is fixedly connected to the support member, and the other end of the connecting shaft is movably mounted on the support platform.

[0023] Optionally, the support platform is provided with a through hole, and the connecting shaft is inserted into the through hole, wherein the diameter of the through hole is larger than the diameter of the connecting shaft.

[0024] Optionally, the connecting shaft is provided with a boss, which divides the connecting shaft into a first shaft body and a second shaft body. The first shaft body is inserted and fixed to the support member, and the second shaft body is inserted into the through hole. The cross-sectional area of ​​the boss is larger than the cross-sectional area of ​​the through hole.

[0025] This application also provides a printing apparatus that includes the pressure regulating mechanism described above.

[0026] The beneficial effects of the pressure regulating mechanism and printing equipment provided in this application are as follows: Compared with the prior art, the pressure regulating mechanism and printing equipment provided in this application have the two ends of the second roller body mounted on the support member, the first pressure regulating drive member connected to the first eccentric mechanism, the first transmission member mounted on the first eccentric mechanism and able to rotate relative to the frame. Under the drive of the first pressure regulating drive member, the first eccentric mechanism pushes the first transmission member to rotate relative to the frame, thereby causing the support member mounted on the first transmission member to swing relative to the frame, thereby adjusting the center distance between the second roller body and the first roller body, realizing pressure regulation between the second roller body and the first roller body, eliminating manual dependence and improving the adjustment accuracy. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 Schematic diagram of the pressure regulating mechanism provided in the embodiments of this application Figure 1 ;

[0029] Figure 2 for Figure 1 A partial structural schematic diagram of the pressure regulating mechanism is shown;

[0030] Figure 3 Schematic diagram of the pressure regulating mechanism provided in the embodiments of this application Figure 2 ;

[0031] Figure 4 for Figure 3 A partial structural schematic diagram of the pressure regulating mechanism is shown;

[0032] Figure 5 This is a partial structural schematic diagram of the pressure regulating mechanism provided in the embodiments of this application;

[0033] Figure 6 for Figure 5 The diagram shows the fit between the structure and the second roller.

[0034] Figure 7 for Figure 5 The diagram shown is an exploded view of the pressure regulating mechanism.

[0035] The following are the labeling elements in the figure:

[0036] 10. Frame; 101. First upright plate; 102. Second upright plate;

[0037] 20. First roller; 30. Second roller; 40. Third roller;

[0038] 50. Supporting components;

[0039] 510. First pressure regulating unit on the operating side; 520. First pressure regulating unit on the transmission side; 501. First pressure regulating drive component; 502. First eccentric mechanism; 503. First transmission component; 504. First ear seat; 505. First arc surface;

[0040] 610. Second pressure regulating unit on the operating side; 620. Second pressure regulating unit on the transmission side; 601. Second pressure regulating drive; 602. Second eccentric mechanism; 603. Second transmission component; 604. Second lug; 605. Second arc surface;

[0041] 70. Rotating shaft; 71. Third driving component; 72. Transmission unit;

[0042] 81. Support platform; 810. Through hole; 82. Connecting shaft; 821. Boss; 822. First shaft body; 823. Second shaft body;

[0043] 90. Bearing housing. Detailed Implementation

[0044] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0045] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0046] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0047] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0048] See Figure 1 and Figure 3 The pressure regulating mechanism provided in this embodiment includes: a frame 10, a first roller 20, a second roller 30, a first pressure regulating assembly, and a support 50. The first roller 20 is rotatably mounted on the frame 10. Figure 2 and Figure 4 As shown, the first pressure regulating assembly includes an operation-side first pressure regulating unit 510 and a transmission-side first pressure regulating unit 520, which are respectively disposed at opposite ends of the first roller body 20. Both the operation-side first pressure regulating unit 510 and the transmission-side first pressure regulating unit 520 include a first pressure regulating drive 501, a first eccentric mechanism 502, and a first transmission component 503. The first pressure regulating drive 501 is fixedly mounted on the frame 10, and its drive end is connected to the first eccentric mechanism 502. The first transmission component 503 is rotatably mounted on the frame 10 and rests on the first eccentric mechanism 502. Specifically, one end of the first transmission component 503 is rotatably mounted on the frame 10 via a shaft, and the other end rests on the first eccentric mechanism 502. The support component 50 is swingably mounted on the frame 10 and rests on the first transmission component 503. The two ends of the second roller 30 are respectively placed on the two support members 50, so that the second roller 30 can move with the support members 50.

[0049] Driven by the two first pressure regulating drive units 501, the support member 50 swings relative to the frame 10 to adjust the center distance between the first roller 20 and the second roller 30. The center distance between the first roller 20 and the second roller 30 refers to the distance between the axis of the first roller 20 and the axis of the second roller 30.

[0050] Printing equipment includes a printing plate roller, a substrate roller, and an anilox roller. In practical applications, it is necessary to adjust the pressure between the printing plate roller and the substrate roller, as well as the pressure between the printing plate roller and the anilox roller. In this application, one of the first roller body 20 and the second roller body 30 is a printing plate roller and the other is a substrate roller; or, one is a printing plate roller and the other is an anilox roller.

[0051] Both the first roller 20 and the second roller 30 are rotatable relative to the frame 10. Specifically, a first rotary drive and a second rotary drive are mounted on the frame 10. The first rotary drive is driven by the first roller 20 to drive the first roller 20 to rotate. The second rotary drive is driven by the second roller 30 to drive the second roller 30 to rotate.

[0052] The operating-side first pressure regulating unit 510 and the transmission-side first pressure regulating unit 520 move synchronously to adjust the pressure between the first roller 20 and the second roller 30. The operating-side first pressure regulating unit 510 and the transmission-side first pressure regulating unit 520 have identical structures. It should be noted that the operating-side first pressure regulating unit 510 and the transmission-side first pressure regulating unit 520 are not connected to the first roller 20; they are only positioned at opposite ends of the first roller 20. The second roller 30 is arranged parallel to the first roller 20, and the operating-side first pressure regulating unit 510 and the transmission-side first pressure regulating unit 520 are located at opposite ends of the first roller 20, which are also opposite ends of the second roller 30.

[0053] Optionally, the first pressure regulating drive 501 is a servo motor or other rotary motor capable of both forward and reverse rotation, allowing for adjustment of the pressure between the second roller 30 and the first roller 20 as needed. The first pressure regulating drive 501 can be directly connected to the first eccentric mechanism 502, or connected via a transmission mechanism, as long as it can drive the first eccentric mechanism 502 to rotate. Driven by the first pressure regulating drive 501, the first eccentric mechanism 502 rotates, causing different areas of the first eccentric mechanism 502 to contact the first transmission member 503, thereby enabling the first transmission member 503 to rotate around the frame 10. One end of the second roller 30 rests on the support member 50 located on the operating side, and the other end rests on the support member 50 located on the transmission side. When the first transmission member 503 rotates around the frame 10, the support member 50 will swing slightly relative to the frame 10 under the action of the first transmission member 503, thereby adjusting the center distance between the second roller 30 and the first roller 20.

[0054] In some embodiments, the first eccentric mechanism 502 includes a cam, and the first transmission member 503 is mounted on the cam. In still other embodiments, the first eccentric mechanism 502 is an eccentric wheel, and the first transmission member 503 is mounted on the eccentric wheel.

[0055] Understandably, when the support member 50 adjusts the position of the second roller 30 slightly under the action of the first transmission member 503, the second rotation drive member moves synchronously with the second roller 30 to ensure that the relative position of the second rotation drive member and the second roller 30 remains unchanged, so as to keep the second roller 30 able to rotate smoothly.

[0056] In some optional embodiments, the first pressure regulating drive 501 adjusts the pressure between the second roller 30 and the first roller 20 based on the detection information from the detection sensor. For example, the detection sensor includes an incoming material detection element used to identify the thickness of the material to be printed. The first pressure regulating drive 501 automatically adjusts the pressure between the second roller 30 and the first roller 20 based on the thickness information detected by the incoming material detection element to ensure printing quality. In still other optional embodiments, the first pressure regulating drive 501 adjusts the pressure between the second roller 30 and the first roller 20 based on user-inputted operation commands. In some optional embodiments, the first pressure regulating drive 501 can adjust the pressure between the second roller 30 and the first roller 20 either automatically based on the detection information from the detection sensor or based on user-inputted operation commands. This application does not specifically limit this adjustment.

[0057] The pressure regulating mechanism provided in this application embodiment has the two ends of the second roller 30 mounted on the support member 50. The first pressure regulating drive member 501 is connected to the first eccentric mechanism 502. The first transmission member 503 is mounted on the first eccentric mechanism 502 and can rotate relative to the frame 10. Under the drive of the first pressure regulating drive member 501, the first eccentric mechanism 502 pushes the first transmission member 503 to rotate relative to the frame 10, thereby causing the support member 50 mounted on the first transmission member 503 to swing left and right relative to the frame 10, thereby adjusting the center distance between the second roller 30 and the first roller 20, realizing the pressure regulation between the second roller 30 and the first roller 20 without manual intervention, eliminating dependence on manual labor, and improving the adjustment accuracy.

[0058] See Figure 5 and Figure 7 The support member 50 is fan-shaped, and the first transmission member 503 has a first arc surface 505 on the side facing the support member 50, and the first arc surface 505 is tangent to the support member 50.

[0059] See Figure 6A bearing is installed at the end of the second roller 30, and the bearing is fixed on the bearing seat 90. The support member 50 is fan-shaped, with its inner surface fitted and fixed to the arc-shaped outer wall of the bearing seat 90, and its outer surface in contact with the first arc surface 505. The first transmission member 503 is a bent strip structure, which can avoid the rotating shaft 70 of the first roller 20 and overlap with the support member 50. The first arc surface 505 is externally tangent to the support member 50. Specifically, the first arc surface 505 and the outer peripheral surface of the first roller 20 are concentric. When the first transmission member 503 is stationary, if the support member 50 slides along the first arc surface 505, the distance between the axis of the second roller 30 and the axis of the first roller 20 remains unchanged because the first arc surface 505 and the support member 50 are tangent. That is, when the first pressure regulating drive member 501 does not drive the first transmission member 503 to rotate, the pressure between the second roller 30 and the first roller 20 remains unchanged. In one specific embodiment of this application, the second roller 30 is a printing plate roller. See also... Figure 1 and Figure 3 The pressure regulating mechanism also includes a third roller body 40 and a second pressure regulating assembly. One of the third roller body 40 and the first roller body 20 is an anilox roller, and the other is a printing roller. The third roller body 40 is rotatably mounted on the frame 10. (See reference...) Figure 2 and Figure 4 The second pressure regulating assembly includes an operation-side second pressure regulating unit 610 and a transmission-side second pressure regulating unit 620, which are respectively located at opposite ends of the third roller body 40. Both the operation-side and transmission-side second pressure regulating units 610 and 620 include a second pressure regulating drive 601, a second eccentric mechanism 602, and a second transmission component 603. The second pressure regulating drive 601 is fixedly mounted on the frame 10, and its drive end is connected to the second eccentric mechanism 602. The second transmission component 603 is rotatably mounted on the frame 10 and rests on the second eccentric mechanism 602. Specifically, one end of the second transmission component 603 is rotatably mounted on the second frame 10, and the other end rests on the second eccentric mechanism 602. The second transmission component 603 and the first transmission component 503 are arranged symmetrically, and the support component 50 is simultaneously mounted on the second transmission component 603 and the first transmission component 503.

[0060] Driven by the two second pressure regulating drive units 601, the support member 50 swings relative to the frame 10 to adjust the center distance between the second roller 30 and the third roller 40. The center distance between the second roller 30 and the third roller 40 refers to the distance between the axis of the second roller 30 and the axis of the third roller 40.

[0061] The second pressure regulating unit 610 on the operating side and the second pressure regulating unit 620 on the transmission side are not connected to the third roller 40; they are only installed at opposite ends of the third roller 40. Since the third roller 40 and the second roller 30 are arranged parallel to each other, the second pressure regulating unit 610 on the operating side and the second pressure regulating unit 620 on the transmission side are located at opposite ends of the third roller 40, which are also opposite ends of the second roller 30. The second pressure regulating unit 610 on the operating side and the second pressure regulating unit 620 on the transmission side move synchronously to adjust the pressure between the third roller 40 and the second roller 30.

[0062] The first pressure regulating component is used to adjust the pressure between the first roller 20 and the second roller 30. It should be noted that when the second roller 30 moves under the action of the first pressure regulating drive 501, the pressure between it and the third roller 40 remains constant. Similarly, the second pressure regulating component is used to adjust the pressure between the third roller 40 and the second roller 30. When the second roller 30 oscillates under the action of the second pressure regulating drive 601, the pressure between the second roller 30 and the first roller 20 remains constant. The support member 50 rests on both the first transmission member 503 and the second transmission member 603. When the first transmission member 503 rotates under the action of the first pressure regulating drive 501 and the second transmission member 603 remains stationary, the pressure between the second roller 30 and the third roller 40 remains constant. When the second transmission member 603 rotates under the action of the second pressure regulating drive 601 and the first transmission member 503 remains stationary, the first transmission member 503 keeps the pressure between the second roller 30 and the first roller 20 constant.

[0063] See Figure 2 and Figure 4 The second pressure regulating unit 610 on the operating side and the first pressure regulating unit 510 on the operating side are respectively located on opposite sides of the first end of the second roller body 30; the first pressure regulating unit 520 on the transmission side and the second pressure regulating unit 620 on the transmission side are respectively located on opposite sides of the second end of the second roller body 30.

[0064] In some optional embodiments, the second pressure regulating drive 601 automatically adjusts the pressure between the second roller 30 and the third roller 40 based on detection information obtained from a detection unit installed inside the printing equipment. For example, the detection unit includes a pressure sensor used to detect the pressure between the third roller 40 and the second roller 30. The second pressure regulating drive 601 automatically adjusts the pressure between the second roller 30 and the third roller 40 based on the pressure information detected by the pressure sensor, thereby facilitating ink quantity control. In still other optional embodiments, the second pressure regulating drive 601 adjusts the pressure between the second roller 30 and the third roller 40 according to user-inputted operation commands. In some optional embodiments, the second pressure regulating drive 601 can adjust the pressure between the second roller 30 and the third roller 40 either automatically based on the detection information from the detection sensor or based on user-inputted operation commands. This application does not specifically limit the application in this regard.

[0065] In some embodiments, the second eccentric mechanism 602 includes a cam, and the second transmission member 603 is mounted on the cam. In still other embodiments, the second eccentric mechanism 602 is an eccentric wheel, and the second transmission member 603 is mounted on the eccentric wheel. The first eccentric mechanism 502 and the second eccentric mechanism 602 may be the same or different. For example, the first eccentric mechanism 502 includes a cam, and the second eccentric mechanism 602 includes an eccentric wheel. Alternatively, both the first eccentric mechanism 502 and the second eccentric mechanism 602 may use cams.

[0066] In some specific embodiments, the end of the first transmission member 503 connected to the frame 10 has a first lug 504, and the end of the second transmission member 603 connected to the frame 10 has a second lug 604. A rotating shaft 70 is mounted on the frame 10, and both the first lug 504 and the second lug 604 can be rotatably sleeved on the rotating shaft 70.

[0067] The first ear seat 504 is a flat structure at the end of the first transmission member 503, and the second ear seat 604 is a flat structure at the end of the second transmission member 603. The first ear seat 504 and the second ear seat 604 are sleeved on the same rotating shaft 70, so that the first transmission member 503 and the second transmission member 603 rotate in the same plane, reducing the space occupied by the arrangement of the first transmission member 503 and the second transmission member 603.

[0068] Understandably, the first transmission component 503 and the second transmission component 603 located on the operating side are rotatably mounted on the frame 10 via the same rotating shaft 70, while the first transmission component 503 and the second transmission component 603 located on the transmission side are rotatably mounted on the frame 10 via another rotating shaft 70.

[0069] The pressure regulating mechanism also includes a third driving component 71 and a transmission unit 72. The third driving component 71 is connected to the rotating shaft 70 via the transmission unit 72. Driven by the third driving component 71, the rotating shaft 70 drives the second roller 30 to move up and down, so as to realize the pressure distribution and pressure convergence between the second roller 30, the first roller 20, and the third roller 40.

[0070] The first transmission component 503 is mounted on the first eccentric mechanism 502 and can be separated from the first eccentric mechanism 502. The second transmission component 603 is mounted on the second eccentric mechanism 602 and can be separated from the second eccentric mechanism 602. The third drive component 71 is a cylinder or a motor, see reference. Figure 2 and Figure 4 The transmission unit 72 includes a linkage mechanism formed by multiple connecting rods. The driving end of the third driving member 71 is connected to the input end of the linkage mechanism, and the output end of the linkage mechanism is connected to the rotating shaft 70.

[0071] During the printing process, the first roller 20, the second roller 30, and the third roller 40 need to form the contact pressure required for printing. The pressure between the first roller 20 and the second roller 30 is adjusted by the first pressure adjusting component, and the pressure between the second roller 30 and the third roller 40 is adjusted by the second pressure adjusting component. After the pressure of the roller components is adjusted, in the blank area of ​​the printing material or in the non-printing state, to avoid frictional wear between the rollers or ink drying, the rotating shaft 70 is moved upward by the third driving component 71 and the transmission unit 72. During this process, the first transmission component 503 and the second transmission component 603 move upward with the rotating shaft 70 and separate from the corresponding eccentric mechanism. The upward movement of the first transmission component 503 and the second transmission component 603 drives the support component 50 to move upward, causing the second roller 30 supported by the support component 50 to move upward. This causes the second roller 30 to share the pressure with the other two rollers. When a pattern needs to be printed, the third drive component 71 reverses its direction, driving the rotating shaft 70 downwards via the transmission unit 72, causing the second roller 30 to return to its pre-adjusted printing state, thus achieving pressure convergence of the three rollers. During pressure division and convergence, the posture of the first transmission component 503 and the second transmission component 603 relative to the rotating shaft 70 remains unchanged. If pressure adjustment between the rollers is required, the first pressure regulating drive component 501 and the second pressure regulating drive component 601 are controlled to adjust the pressure after convergence.

[0072] In some alternative embodiments, see Figure 5 and Figure 7 The pressure regulating mechanism also includes a support platform 81 and a connecting shaft 82. The support platform 81 is fixed to the frame 10, one end of the connecting shaft 82 is fixedly connected to the support member 50, and the other end of the connecting shaft 82 is movably installed on the support platform 81.

[0073] The support member 50 located on the operating side and the support member 50 located on the transmission side are oscillatingly mounted on the frame 10 via a support platform 81 and a connecting shaft 82, respectively. Specifically, the support platform 81 is fixed on the frame 10, one end of the connecting shaft 82 is inserted and fixed inside the support member 50, and the other end is movably inserted onto the support platform 81. The first pressure regulating drive member 501 drives the first transmission member 503 to rotate via the first eccentric mechanism 502, causing the connecting shaft 82 mounted on the support member 50 to move relative to the support platform 81, thereby adjusting the pressure between the second roller 30 and the first roller 20 on the support member 50 without affecting the pressure between the second roller 30 and the third roller 40. The second pressure regulating drive 601 drives the second transmission 603 to rotate via the second eccentric mechanism 602, causing the connecting shaft 82 mounted on the support 50 to move relative to the support platform 81, thereby adjusting the pressure between the second roller 30 and the third roller 40 on the support without affecting the pressure between the second roller 30 and the first roller 20.

[0074] See Figure 7 The support platform 81 has a through hole 810, and the connecting shaft 82 is inserted into the through hole 810. The diameter of the through hole 810 is larger than the diameter of the connecting shaft 82.

[0075] See Figure 2 and Figure 4 The first transmission member 503 and the second transmission member 603 located on the operating side are symmetrically arranged with respect to the rotating shaft 70 on that side, and the first transmission member 503 and the second transmission member 603 located on the transmission side are symmetrically arranged with respect to the rotating shaft 70 on that side. The support member 50 is in contact with both the first transmission member 503 and the second transmission member 603. Since the diameter of the through hole 810 is larger than the diameter of the connecting shaft 82, the connecting shaft 82 can sway within the through hole 810 when the first transmission member 503 rotates. Similarly, the connecting shaft 82 can also sway within the through hole 810 when the second transmission member 603 rotates. The swaying direction of the connecting shaft 82 within the through hole 810 is constrained by the first transmission member 503 and the second transmission member 603, and it can only swing left and right. Specifically, when the first transmission member 503 rotates relative to the frame 10, the support member 50 remains in contact with the second transmission member 603 and sways left and right under the action of the connecting shaft 82, causing a change in the distance between the axis of the second roller 30 and the axis of the first roller 20. Under the support of the second transmission member 603, the pressure between the second roller 30 and the third roller 40 remains constant. When the second transmission member 603 rotates relative to the frame 10, the support member 50 remains in contact with the first transmission member 503 and sways left and right under the action of the connecting shaft 82, causing a change in the distance between the axis of the second roller 30 and the axis of the third roller 40. Under the support of the first transmission member 503, the pressure between the second roller 30 and the first roller 20 remains constant.

[0076] like Figure 7As shown, the connecting shaft 82 is provided with a boss 821, which divides the connecting shaft 82 into a first shaft body 822 and a second shaft body 823. The first shaft body 822 is inserted and fixed to the support member 50, and the second shaft body 823 is movably inserted into the through hole 810. The cross-sectional area of ​​the boss 821 is larger than the cross-sectional area of ​​the through hole 810. Optionally, one side of the boss 821 abuts against the bottom of the support member 50, and the other side abuts against the top of the support platform 81. The boss 821 can constrain the maximum depth of the connecting shaft 82 inserted into the through hole 810, and can also constrain the left and right swing amplitude of the connecting shaft 82 within the through hole 810.

[0077] Optionally, the second transmission member 603 has a second arc surface 605 on the side facing the support member 50, and the second arc surface 605 is tangent to the support member 50.

[0078] The support member 50 is fan-shaped, with its inner surface fitted and fixed to the arc-shaped outer wall of the bearing seat 90, and its outer surface tangent to the second arc surface 605. The second transmission member 603 is a bent strip structure that can avoid the rotating shaft 70 of the third roller 40 while supporting the support member 50. The second arc surface 605 is externally tangent to the support member 50. Specifically, the second arc surface 605 and the outer peripheral surface of the third roller 40 are concentric. When the second transmission member 603 is stationary, if the support member 50 slides along the second arc surface 605, the distance between the axis of the second roller 30 and the axis of the third roller 40 remains unchanged because the second arc surface 605 and the support member 50 are tangent. That is, when the second pressure regulating drive member 601 does not drive the second transmission member 603 to rotate, the pressure between the second roller 30 and the third roller 40 remains unchanged.

[0079] See Figure 5 and Figure 7 The first transmission member 503 and the second transmission member 603 located at the same end are arranged in a V-shape. The support member 50 is simultaneously placed on the first transmission member 503 and the second transmission member 603. The support member 50 is supported by the V-shaped first transmission member 503 and the second transmission member 603, and the second roller body 30 can be kept stable after the pressure is adjusted.

[0080] See Figure 1 and Figure 3 The frame 10 includes a first vertical plate 101 and a second vertical plate 102 disposed opposite to each other, and a third roller 40, a second roller 30 and a first roller 20 are located between the first vertical plate 101 and the second vertical plate 102. A first pressure regulating drive 501 and a second pressure regulating drive 601 are disposed on the outside of the first vertical plate 101 and the second vertical plate 102.

[0081] This application also provides a printing apparatus, which includes the pressure regulating mechanism described above.

[0082] Specifically, the printing equipment also includes a winding mechanism and an unwinding mechanism, with a pressure regulating mechanism located between the unwinding and winding mechanisms. The unwinding mechanism is used to unwind the printing substrate and control the initial tension, while the winding mechanism is used to rewind the printed material.

[0083] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A pressure regulating mechanism, characterized in that: include: Rack (10); The first roller (20) is rotatably mounted on the frame (10); The first pressure regulating assembly includes an operation-side first pressure regulating unit (510) and a transmission-side first pressure regulating unit (520), wherein the operation-side first pressure regulating unit (510) and the transmission-side first pressure regulating unit (520) are respectively disposed at opposite ends of the first roller body (20); The first pressure regulating unit (510) on the operating side and the first pressure regulating unit (520) on the transmission side both include a first pressure regulating drive (501), a first eccentric mechanism (502) and a first transmission component (503). The first pressure regulating drive (501) is fixedly installed on the frame (10). The driving end of the first pressure regulating drive (501) is connected to the first eccentric mechanism (502). The first transmission component (503) is rotatably installed on the frame (10) and rests on the first eccentric mechanism (502). Support member (50), which is swayably mounted on the frame (10) and rests on the first transmission member (503); The second roller (30) has its opposite ends placed on the two support members (50) in a corresponding manner; Driven by the two first pressure regulating drives (501), the support (50) swings relative to the frame (10) to adjust the center distance between the first roller (20) and the second roller (30).

2. The pressure regulating mechanism as described in claim 1, characterized in that: The support member (50) is fan-shaped, and the first transmission member (503) has a first arc surface (505) on the side facing the support member (50), and the first arc surface (505) is tangent to the support member (50).

3. The pressure regulating mechanism as described in claim 1, characterized in that: The second roller (30) is a printing plate roller, and the pressure adjusting mechanism further includes: The third roller (40) is rotatably mounted on the frame (10); The second pressure regulating assembly includes an operation-side second pressure regulating unit (610) and a transmission-side second pressure regulating unit (620), wherein the operation-side second pressure regulating unit (610) and the transmission-side second pressure regulating unit (620) are respectively disposed at opposite ends of the third roller body (40); The second pressure regulating unit (610) on the operating side and the second pressure regulating unit (620) on the transmission side both include a second pressure regulating drive (601), a second eccentric mechanism (602), and a second transmission component (603). The second pressure regulating drive (601) is fixedly installed on the frame (10). The driving end of the second pressure regulating drive (601) is connected to the second eccentric mechanism (602). The second transmission component (603) is rotatably installed on the frame (10) and supported on the second eccentric mechanism (602). The second transmission component (603) and the first transmission component (503) are arranged symmetrically. The support component (50) is supported on the first transmission component (503) and the second transmission component (603). Driven by the two second pressure regulating drives (601), the support (50) swings relative to the frame (10) to adjust the center distance between the second roller (30) and the third roller (40).

4. The pressure regulating mechanism as described in claim 3, characterized in that: The first transmission member (503) has a first ear seat (504) at one end connected to the frame (10), and the second transmission member (603) has a second ear seat (604) at one end connected to the frame (10). A rotating shaft (70) is installed on the frame (10), and both the first ear seat (504) and the second ear seat (604) can be rotatably sleeved on the rotating shaft (70).

5. The pressure regulating mechanism as described in claim 4, characterized in that: It also includes a third driving component (71) and a transmission unit (72). The third driving component (71) is connected to the rotating shaft (70) via the transmission unit (72). Under the drive of the third driving component (71), the rotating shaft (70) drives the second roller (30) to move up and down, so as to realize the pressure division and pressure convergence between the second roller (30), the first roller (20), and the third roller (40).

6. The pressure regulating mechanism as described in claim 3, characterized in that: The second transmission member (603) has a second arc surface (605) on the side facing the support member (50), and the second arc surface (605) is tangent to the support member (50).

7. The pressure regulating mechanism as described in claim 3, characterized in that: The first transmission member (503) and the second transmission member (603) are arranged in a V-shape.

8. The pressure regulating mechanism as described in claim 1, characterized in that: It also includes a support platform (81) and a connecting shaft (82). The support platform (81) is fixed to the frame (10). One end of the connecting shaft (82) is fixedly connected to the support member (50), and the other end of the connecting shaft (82) is movably inserted into the support platform (81).

9. The pressure regulating mechanism as described in claim 8, characterized in that: The support platform (81) is provided with a through hole (810), and the connecting shaft (82) is inserted into the through hole (810). The diameter of the through hole (810) is larger than the diameter of the connecting shaft (82).

10. The pressure regulating mechanism as described in claim 9, characterized in that: The connecting shaft (82) is provided with a boss (821), which divides the connecting shaft (82) into a first shaft body (822) and a second shaft body (823). The first shaft body (822) is inserted and fixed to the support member (50), and the second shaft body (823) is inserted into the through hole (810). The cross-sectional area of ​​the boss (821) is larger than the cross-sectional area of ​​the through hole (810).

11. A printing apparatus, characterized in that, Includes the pressure regulating mechanism as described in any one of claims 1 to 10.

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