A rubber roller lifting adjusting device and a printer

Abstract

The application relates to the field of printers, and discloses a rubber roller lifting adjusting device and a printer. The rubber roller lifting adjusting device comprises a rack, a mounting plate, a sliding plate, an adjusting rod, an elastic piece and a rotating rod. The rack comprises two side plates arranged at intervals, and the two side plates form a mounting space. A first roller shaft and a second roller shaft are arranged in the mounting space along a first direction. The top surface of the mounting plate is provided with an adjusting hole. The second roller shaft is rotatably connected with the sliding plate. The end of the elastic piece abuts against the sliding plate. The rotating rod is provided with a cam corresponding to the position of the sliding plate. The cam of the rotating rod synchronously drives the two sliding plates to move along the first direction, realizes the overall lifting of the second roller shaft in the avoiding groove, and avoids the manual operation of separately adjusting the two ends of the rubber roller. Meanwhile, the elastic piece cooperates with the adjusting rod to preset the downward pressure, so that the second roller shaft can automatically keep the uniformity of the pressure with the first roller shaft when being reset, and the problem that the distance between the existing rubber rollers needs to be repeatedly and synchronously calibrated is solved.

Description

Technical Field

[0001] This application relates to the field of printers, and more particularly to a roller lifting and adjusting device and a printer. Background Technology

[0002] In the existing lamination process of crystal label printers, the lamination of printing paper and film requires the synergistic action of adjacent rollers. Specifically, the distance between the two rollers must first be increased to allow space for the paper and film; after the material is placed, the distance must be decreased to apply uniform pressure to the material and complete the lamination. Currently, a bolt mechanism is commonly used to adjust the roller spacing: operators must independently adjust the bolts at both ends of each roller, repeatedly trying to keep the axes of the two rollers parallel, thus ensuring consistent pressure distribution along the length of the rollers.

[0003] Because the distance between the two ends of the rubber rollers needs to be manually and synchronously calibrated, operators must perform multiple fine adjustments before lamination, including alternating tightening or loosening of the bolts on both sides, testing the uniformity of roller surface pressure, and then reversing the correction process. Especially after changing to materials of different thicknesses or after mechanical misalignment occurs during equipment operation, the entire leveling process must be repeated. This process is highly dependent on the operator's experience, and the adjustment accuracy is difficult to maintain consistently, resulting in a significant amount of time being spent on rubber roller alignment calibration before each printing job. This not only drastically reduces the efficiency of continuous equipment operation but also increases production downtime due to frequent adjustments. Utility Model Content

[0004] In view of this, the purpose of this application is to overcome the shortcomings of the prior art and provide a rubber roller lifting and adjusting device and a printer.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0006] This application provides:

[0007] A rubber roller lifting and adjusting device, having a first direction and a second direction intersecting each other, includes:

[0008] A frame includes two spaced-apart side plates, each side plate having a clearance groove, the two side plates forming an installation space, a first roller shaft and a second roller shaft being arranged in the installation space along a first direction, the first roller shaft being rotatably connected to the side plate, and the end of the second roller shaft being disposed in the clearance groove;

[0009] Mounting plate, the mounting plate is disposed on the side of the side plate opposite to the mounting space, and the top surface of the mounting plate is provided with adjustment holes;

[0010] A sliding plate is slidably disposed on the side of the side plate away from the mounting space along a first direction, the sliding plate is located at the clearance groove, and the second roller shaft is rotatably connected to the sliding plate;

[0011] An adjusting rod is inserted through the sliding plate and positioned in the adjusting hole;

[0012] An elastic element is disposed on the adjusting rod, and the end of the elastic element abuts against the sliding plate;

[0013] A rotating rod, both ends of which are rotatably mounted on the side plate, and a cam on the rotating rod corresponding to the position of the slide plate.

[0014] Furthermore, the rubber roller lifting and adjusting device also includes a second direction intersecting the first direction; the slide plate includes a sliding part slidably disposed on the side plate, the top of the sliding part is provided with an extension part extending toward the installation space along the first direction, and the extension part is provided with an avoidance hole coaxially disposed with the adjusting hole.

[0015] Furthermore, the adjusting rod includes a rod portion and a screwing portion. The rod portion passes through the clearance hole and is disposed in the adjusting hole. The screwing portion is disposed at the end of the rod portion away from the extension portion. The elastic element is sleeved on the rod portion. One end of the elastic element abuts against the extension portion, and the end of the elastic element away from the extension portion abuts against the screwing portion.

[0016] Furthermore, the cam has a central hole, and the cam is sleeved with the rotating rod. The cam's circumferential surface has a first mounting hole extending to the central hole, and a first tightening member is provided in the first mounting hole.

[0017] Furthermore, the shape of the central hole is adapted to the cross-sectional shape of the rotating rod, the cross-section of the rotating rod is polygonal, and the number of sides of the polygon is N, satisfying: N≥3.

[0018] Furthermore, at least one retaining ring is fitted on the rotating rod, and a second mounting hole is opened on the circumference of the retaining ring. A second tightening member is provided in the second mounting hole, and at least one side plate is located between the retaining ring and the cam.

[0019] Furthermore, a handle is provided at one end of the rotating rod, the handle includes a transmission rod, the transmission rod is detachably connected to the rotating rod, and a handle is provided at the end of the transmission rod opposite to the rotating rod.

[0020] Furthermore, the second roller has a through hole extending along its axis, in which a heating rod is disposed, and each of the sliding portions has a fixing portion disposed on the side opposite to the mounting space, with the end of the heating rod fixedly disposed on the fixing portion.

[0021] Furthermore, one of the side plates is provided with a rotary drive component, which is connected to the first roller shaft via a transmission connection.

[0022] This application also provides a printer, including the roller lifting and adjusting device described in any one of the above-mentioned methods.

[0023] This application uses a cam on a rotating rod to synchronously drive the two sliding plates on both sides to move along a first direction, thereby achieving the overall lifting and lowering of the second roller shaft within the clearance groove. This avoids the need for manual adjustment of both ends of the rubber roller separately. At the same time, by using an elastic element in conjunction with an adjusting rod to preset the downward pressure, the second roller shaft automatically maintains pressure uniformity with the first roller shaft when it resets. This solves the problem that existing rubber roller spacing requires repeated synchronous calibration and pressure accuracy depends on the operator's experience, significantly improving adjustment efficiency and stability, and eliminating the need for a leveling process before each lamination.

[0024] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This shows a schematic diagram of the first-view structure of the lifting and adjusting device of this application;

[0027] Figure 2 This paper shows a schematic diagram of the second perspective structure of the lifting and adjustment device of this application;

[0028] Figure 3 An explosion diagram of the lifting and adjusting device of this application is shown;

[0029] Figure 4 This diagram illustrates the exploded state of the side panel, mounting plate, and sliding plate of this application.

[0030] Figure 5 The diagram shows the structural schematic of the rotating rod, cam, retaining ring, and handle in their assembled state.

[0031] Explanation of key component symbols:

[0032] 100-Side plate; 101-Allowing groove; 110-First roller shaft; 120-Second roller shaft; 121-Heating rod; 200-Mounting plate; 210-Adjusting hole; 300-Slide plate; 310-Sliding part; 320-Extension part; 321-Allowing hole; 330-Fixing part; 400-Adjusting rod; 410-Rod part; 420-Turning part; 500-Elastic element; 600-Rotating rod; 610-Cam; 611-First mounting hole; 620-Handle; 621-Transmission rod; 622-Handle handle; 630-Retaining ring; 631-Second mounting hole; 700-Rotation drive element; Z-First direction; X-Second direction. Detailed Implementation

[0033] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0034] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, 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, and therefore should not be construed as a limitation of this application.

[0035] 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.

[0036] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0037] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0038] This application provides a rubber roller lifting and adjusting device with a first direction Z and a second direction X intersecting. The adjusting device includes a frame, a mounting plate 200, a sliding plate 300, an adjusting rod 400, an elastic element 500, and a rotating rod 600. The frame includes two spaced-apart side plates 100, each side plate 100 having a clearance groove 101. The two side plates 100 form an installation space. A first roller shaft 110 and a second roller shaft 120 are arranged along the first direction Z in the installation space. The first roller shaft 110 is rotatably connected to the side plate 100, and the end of the second roller shaft 120 is disposed in the clearance groove 101. The mounting plate 200 is disposed on the side plate 100. The side plate 100 is located away from the installation space. The top surface of the mounting plate 200 is provided with an adjustment hole 210. The slide plate 300 is slidably disposed on the side plate 100 away from the installation space along the first direction Z. The slide plate 300 is located at the clearance groove 101. The second roller shaft 120 is rotatably connected to the slide plate 300. The adjustment rod 400 passes through the slide plate 300 and is disposed in the adjustment hole 210. The elastic element 500 is disposed on the adjustment rod 400. The end of the elastic element 500 abuts against the slide plate 300. Both ends of the rotating rod 600 are rotatably disposed on the side plate 100. The rotating rod 600 is provided with a cam 610 corresponding to the position of the slide plate 300.

[0039] See Figure 1 and Figure 2 As shown, the first direction Z in the above is the height direction. In this embodiment, the adjusting rod 400 is a bolt, the elastic element 500 is a spring, specifically a compression spring, and the adjusting hole 210 is a threaded hole. The extension and retraction length of the elastic element 500 is adjusted by turning the bolt, thereby adjusting the force exerted on the surface of the first roller shaft 110 by the sliding part 310 driving the second roller shaft 120 to move downward, thereby adjusting the clamping force between the first roller shaft 110 and the second roller shaft 120.

[0040] The rotation of the rotating rod 600 causes the cam 610 to rotate as well and come into contact with the bottom of the sliding part 310. As the rotating rod 600 continues to rotate, the cam 610 drives the sliding part 310 to overcome the elastic force of the elastic element 500 and move upward, thereby driving the second roller shaft 120 to move upward and adjusting the distance between the first roller shaft 110 and the second roller shaft 120, which facilitates the replacement of film and printing paper.

[0041] Understandably, when a constant clamping force is needed between the first roller 110 and the second roller 120, the distance between the first roller 110 and the second roller 120 can be increased by rotating the cam 610 via the rotating rod 600. Therefore, each time the printing paper and film are replaced, only the first adjustment is needed, without adjusting the downward pressure every time the paper or film is replaced or fed. When the clamping force between the first roller 110 and the second roller 120 needs to be adjusted, the adjusting rods 400 on both sides are rotated to adjust the extension and retraction of the elastic element 500, thereby adjusting the clamping force. After the replacement or feeding is completed, the cam 610 is rotated in the opposite direction via the rotating rod 600 to release the upward force on the slide plate 300. Under the elastic force of the elastic element 500, the slide plate 300 will move downward to continue to apply downward pressure to the second roller 120, which then acts on the printing paper and film located between the first roller 110 and the second roller 120.

[0042] It is understandable that the clearance groove 101 in the side plate 100 can be used to avoid the up and down movement of the second roller shaft 120 and prevent the side plate 100 from causing motion interference to the up and down movement of the second roller shaft 120.

[0043] In some embodiments, the roller lifting adjustment device further includes a second direction X intersecting the first direction Z; the slide plate 300 includes a sliding portion 310 slidably disposed on the side plate 100, the top of the sliding portion 310 is provided with an extension portion 320 extending toward the installation space along the first direction Z, and the extension portion 320 is provided with an avoidance hole 321 coaxially disposed with the adjustment hole 210.

[0044] like Figure 3 and Figure 4As shown, the second direction X mentioned above is the transverse direction, which is the axial direction of the first roller shaft 110 and the second roller shaft 120. Specifically, since the side plate 100 and the mounting plate 200 are vertically arranged, in order for the sliding part 310 and the extension part 320 to slide and move relative to the mounting plate 200, that is, to transmit the spring force of the elastic member 500 to the sliding part 310, the extension part 320 needs to be provided extending inward from the top of the sliding part 310, so that the elastic member 500 abuts against the upper surface of the extension part 320, that is, the extension part 320 is located on the mounting plate 200. Above 0, and the clearance hole 321 opened on the extension 320 is coaxially arranged with the adjustment hole 210. Specifically, the clearance hole 321 is a through hole for the adjustment rod 400 to pass through and then connect with the adjustment hole 210. Further, the adjustment rod 400 passes through the clearance hole 321 and then is threadedly connected with the adjustment hole 210. At this time, the elastic element 500 is sleeved on the adjustment rod 400 so that it abuts against the extension 320 and transmits the force to the sliding part 310, giving the sliding part 310 a downward pressure and transmitting the downward pressure to the second roller shaft 120, thus completing the force transmission.

[0045] In some embodiments, the adjusting rod 400 includes a rod portion 410 and a screwing portion 420. The rod portion 410 is provided with an avoidance hole 321 in the adjusting hole 210. The screwing portion 420 is provided at the end of the rod portion 410 away from the extension portion 320. An elastic member 500 is sleeved on the rod portion 410. One end of the elastic member 500 abuts against the extension portion 320, and the end of the elastic member 500 away from the extension portion 320 abuts against the screwing portion 420.

[0046] See Figure 3 and Figure 4 As shown, in order to make it easier to adjust the pressure between the first roller shaft 110 and the second roller shaft 120 at the beginning, the adjusting rod 400 is divided into two parts. One part is the rod part 410 that is threadedly connected to the clearance hole 321, and the other part is the screwing part 420 that is connected to the rod part 410. The screwing part 420 is mainly used by people to hold and screw, so as to facilitate the rotation of the rod part 410.

[0047] It is understood that the rod 410 is specifically a threaded rod, the screwing part 420 is a knob, and the end of the elastic element 500 away from the extension 320 abuts against the screwing part 420. The threaded rod is rotated by the knob, thereby changing the compression length of the elastic element 500, thereby changing the clamping force between the first roller shaft 110 and the second roller shaft 120.

[0048] In some embodiments, the cam 610 has a central hole, and the cam 610 is sleeved with the rotating rod 600. The circumferential surface of the cam 610 has a first mounting hole 611 extending to the central hole, and a first tightening member is provided in the first mounting hole 611.

[0049] See Figure 5 As shown, in this embodiment, there are two cams 610, which are respectively disposed at both ends of the rotating rod 600. Each cam 610 is located at the sliding part 310. The rotating rod 600 drives the cam 610 to rotate, thereby causing the cam 610 to abut against the sliding part 310. As the cam 610 rotates, it drives the sliding part 310 to move upward against the elastic force of the elastic member 500, thereby driving the second roller shaft 120 to move away from the first roller shaft 110, thereby increasing the distance between the first roller shaft 110 and the second roller shaft 120, which facilitates the feeding of printing paper and film.

[0050] In this embodiment, the cam 610 is sleeved onto the rotating rod 600. To prevent the cam 610 from moving axially relative to the rotating rod 600, a first mounting hole 611 extending to its center hole is provided on the circumferential surface of the cam 610. The first mounting hole 611 has an internal thread, that is, the first mounting hole 611 is a threaded hole. The first tightening member mentioned above is a bolt. The bolt is tightened in the threaded hole until the bolt presses against the rotating rod 600. Under the action of the tightening force, the cam 610 is prevented from moving axially, and to a certain extent, the cam 610 can also be circumferentially limited to prevent it from rotating.

[0051] In some embodiments, the shape of the central hole is adapted to the cross-sectional shape of the rotating rod 600, and the cross-section of the rotating rod 600 is polygonal with N sides, satisfying: N≥3.

[0052] Continue reading Figure 5 As shown, to prevent the cam 610 from rotating relative to the rotating rod 600, the cam 610 and the rotating rod 600 are engaged. Specifically, the circumference of the rotating rod 600 is polygonal, and the shape of the central hole of the cam 610 is also a polygonal hole adapted to the rotating rod 600. Therefore, they are engaged in the rotational direction to transmit rotational force. Specifically, the cross-section of the rotating rod 600 can be triangular, quadrilateral, pentagonal, hexagonal, etc. In this embodiment, the cross-section of the rotating rod 600 is hexagonal, and the central hole of the cam 610 is a hexagonal hole. The end of the first tightening member abuts against one side surface of the rotating rod 600 to prevent the cam 610 from moving axially.

[0053] In some embodiments, at least one retaining ring 630 is also sleeved on the rotating rod 600. The retaining ring 630 has a second mounting hole 631 on its circumferential surface. A second tightening member is provided in the second mounting hole 631. At least one side plate 100 is located between the retaining ring 630 and the cam 610.

[0054] Please continue reading. Figure 5As shown, in order to prevent the rotating rod 600 from moving axially and causing the cam 610 to disengage from the sliding part 310, at least one retaining ring 630 is provided on the rotating rod 600. The retaining ring 630 is provided on one side of the side plate 100, that is, the retaining ring 630 is located in the installation space. At this time, at least one side plate 100 is located between the retaining ring 630 and the cam 610. Correspondingly, the center of the retaining ring 630 is also provided with a through hole that matches the cross-sectional shape of the rotating rod 600, so that the retaining ring 630 and the rotating rod 600 are engaged, thereby preventing the retaining ring 630 from rotating relative to the rotating rod 600. Furthermore, in order to prevent the retaining ring 630 from moving axially relative to the rotating rod 600, a second mounting hole 631 is provided on the circumferential surface of the retaining ring 630. The second mounting hole 631 is a threaded hole, and the second tightening element can be a bolt. The bolt is screwed into the second mounting hole 631 and abuts against one side of the rotating rod 600. Under the action of the tightening force, the retaining ring 630 is prevented from moving circumferentially relative to the rotating rod 600.

[0055] It is understandable that the purpose of restricting the axial movement of the retaining ring 630 is that if the retaining ring 630 moves axially, the distance between the retaining ring 630 and the side plate 100 will increase, and the rotating rod 600 will still have the possibility of moving axially, causing the cam 610 to disengage from the sliding part 310. If the cam 610 disengages from the sliding part 310, it will be impossible to drive the sliding part 310 to rise to increase the gap between the first roller shaft 110 and the second roller shaft 120. Therefore, the retaining ring 630 is needed to restrict the axial movement distance of the rotating rod 600.

[0056] In another embodiment, there may be two retaining rings 630, located at the positions of the two side plates 100 respectively.

[0057] In some embodiments, a handle 620 is provided at one end of the rotating rod 600. The handle 620 includes a transmission rod 621, which is detachably connected to the rotating rod 600. A handle 622 is provided at the end of the transmission rod 621 that is away from the rotating rod 600.

[0058] Please continue reading. Figure 5 As shown, in order to facilitate the rotation of the rotating rod 600, a transmission rod 621 is detachably installed at one end of the rotating rod 600. The transmission rod 621 extends a certain distance along the radial direction of the rotating rod 600, and a handle 622 is provided at the other end of the transmission rod 621. The user can hold the handle 622 and transmit power through the transmission rod 621 to drive the rotating rod 600 to rotate.

[0059] In this embodiment, the transmission rod 621 can be connected to the rotating rod 600 by bolt connection. Specifically, one side of the transmission rod 621 also has an extension plate extending to the circumference of the rotating rod 600. The extension plate has a connecting hole, and the circumference of the rotating rod 600 at the location of the connecting hole has a corresponding threaded hole. By passing a bolt through the connecting hole and screwing it into the threaded hole, the circumferential direction of the transmission rod 621 is limited, thereby realizing the transmission of force.

[0060] In some embodiments, the second roller 120 has a through hole extending along its axis, in which a heating rod 121 is disposed. Each sliding part 310 has a fixing part 330 disposed on the side opposite to the mounting space, and the end of the heating rod 121 is fixedly disposed in the fixing part 330.

[0061] See Figure 4 As shown, in order to press the film onto the printing paper using the second roller 120, the second roller 120 can be heated to improve the coating effect. Therefore, in this embodiment, the second roller 120 is hollow, and a heating rod 121 is provided inside the second roller 120. The two ends of the heating rod 121 are fixedly connected to the fixing part 330. In order to enable the heating rod 121 and the second roller 120 to move up and down synchronously, the fixing part 330 is fixedly provided on the side of the sliding part 310, so that the fixing part 330 can move up and down synchronously with the sliding part 310, thereby realizing the movement of the heating rod 121 and the second roller 120.

[0062] In this embodiment, the fixing part 330 is a block-shaped clamp, which clamps and fixes the heating rod 121.

[0063] For example, the heating rod 121 is an electric heating rod that can convert electrical energy into heat energy to heat the second roller 120. It is understood that a corresponding temperature sensor should also be set to detect in real time whether the temperature of the second roller 120 meets the requirements. The temperature sensor and the heating rod 121 are both connected to a corresponding controller to adjust the required temperature of the second roller 120.

[0064] In some embodiments, a rotary drive 700 is provided on one side plate 100, and the rotary drive 700 is connected to the first roller shaft 110 in a transmission connection.

[0065] like Figure 2 and Figure 3 As shown, in order to coat the printing paper and film, the first roller 110 is driven to rotate by the rotary drive 700, thereby realizing the function of rotary pressing and coating. It can be understood that since there is a certain pressure between the first roller 110 and the second roller 120, the first roller 110 will synchronously drive the second roller 120 to rotate.

[0066] This embodiment also provides a printer that includes the roller lifting and adjusting device described above.

[0067] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0068] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A rubber roller lifting and adjusting device, having a first direction (Z), characterized in that, include: The frame includes two spaced-apart side plates (100), each side plate (100) having a clearance groove (101), the two side plates (100) forming an installation space, in which a first roller shaft (110) and a second roller shaft (120) are arranged along a first direction (Z), the first roller shaft (110) being rotatably connected to the side plate (100), and the end of the second roller shaft (120) being disposed in the clearance groove (101). Mounting plate (200), the mounting plate (200) is disposed on the side of the side plate (100) away from the mounting space, and the top surface of the mounting plate (200) is provided with adjustment hole (210). A sliding plate (300) is slidably disposed on the side of the side plate (100) away from the mounting space along a first direction (Z). The sliding plate (300) is located at the clearance groove (101). The second roller shaft (120) is rotatably connected to the sliding plate (300). An adjusting rod (400) passes through the sliding plate (300) and is disposed in the adjusting hole (210). An elastic element (500) is disposed on the adjusting rod (400), and the end of the elastic element (500) abuts against the sliding plate (300). A rotating rod (600) is provided, both ends of which are rotatably mounted on the side plate (100). A cam (610) is provided on the rotating rod (600) corresponding to the position of the sliding plate (300).

2. The rubber roller lifting and adjusting device according to claim 1, characterized in that, The roller lifting and adjusting device further includes a second direction (X) intersecting the first direction (Z); the slide plate (300) includes a sliding part (310) slidably disposed on the side plate (100), the top of the sliding part (310) is provided with an extension part (320) extending toward the installation space along the first direction (Z), and the extension part (320) is provided with an avoidance hole (321) coaxially disposed with the adjusting hole (210).

3. The rubber roller lifting and adjusting device according to claim 2, characterized in that, The adjusting rod (400) includes a rod portion (410) and a screwing portion (420). The rod portion (410) passes through the clearance hole (321) and is disposed in the adjusting hole (210). The screwing portion (420) is disposed at the end of the rod portion (410) away from the extension portion (320). The elastic member (500) is sleeved on the rod portion (410). One end of the elastic member (500) abuts against the extension portion (320), and the end of the elastic member (500) away from the extension portion (320) abuts against the screwing portion (420).

4. The rubber roller lifting and adjusting device according to claim 1, characterized in that, The cam (610) has a central hole, and the cam (610) is sleeved with the rotating rod (600). The circumferential surface of the cam (610) has a first mounting hole (611) extending to the central hole, and a first tightening member is provided in the first mounting hole (611).

5. The rubber roller lifting and adjusting device according to claim 4, characterized in that, The shape of the central hole is adapted to the cross-sectional shape of the rotating rod (600). The cross-section of the rotating rod (600) is polygonal, and the number of sides of the polygon is N, satisfying: N≥3.

6. The rubber roller lifting and adjusting device according to claim 1, characterized in that, At least one retaining ring (630) is also fitted on the rotating rod (600). A second mounting hole (631) is opened on the circumferential surface of the retaining ring (630). A second tightening member is provided in the second mounting hole (631). At least one side plate (100) is located between the retaining ring (630) and the cam (610).

7. The rubber roller lifting and adjusting device according to claim 1, characterized in that, One end of the rotating rod (600) is provided with a handle (620), the handle (620) includes a transmission rod (621), the transmission rod (621) is detachably connected to the rotating rod (600), and the end of the transmission rod (621) opposite to the rotating rod (600) is provided with a handle (622).

8. The rubber roller lifting and adjusting device according to claim 2, characterized in that, The second roller (120) has a through hole extending along its axis, in which a heating rod (121) is disposed. Each of the sliding parts (310) has a fixing part (330) on the side opposite to the mounting space, and the end of the heating rod (121) is fixedly disposed in the fixing part (330).

9. The rubber roller lifting and adjusting device according to claim 1, characterized in that, One of the side plates (100) is provided with a rotary drive (700), which is connected to the first roller shaft (110) in a transmission connection.

10. A printer, characterized in that, The device includes the roller lifting and adjusting device as described in any one of claims 1 to 9.

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