Compression roller cleaning scraper device and compression roller device

Abstract

The utility model relates to a compression roller cleaning scraper device and a compression roller device. The compression roller cleaning scraper device comprises two mounting plates and a scraper blade, the scraper assembly comprises a scraper seat of which the two ends are rotationally connected to the two mounting plates in a one-to-one correspondence manner and a scraper mounted on the scraper seat; the horizontal pushing mechanism is used for driving the mounting plate to translate to drive the scraper assembly to get close to or away from the pressing roller; the turnover mechanism is used for driving the scraper base to rotate relative to the mounting plate so that the scraper base can have a first position and a second position, the scraper inclines by a preset angle relative to the horizontal direction at the first position, and the scraper is vertically arranged at the second position; the first limiting assembly is used for limiting rotation of the scraper base when the scraper base is located at the first position. The second limiting assembly is used for limiting rotation of the scraper base when the scraper base is located at the second position. The compression roller device comprises an upper compression roller, a lower compression roller, an upper scraper device and a lower scraper device, and the upper scraper device and the lower scraper device are symmetrically arranged. The scraper can be conveniently replaced, and the scraper replacement efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of pressure rollers, and in particular to a pressure roller cleaning scraper device and a pressure roller device. Background Art

[0002] At present, for cleaning the pressure roller, a scraper is usually fixed on one side of the pressure roller. The scraper scrapes off the dust adhering to the roller surface during the rotation of the pressure roller. The scraper is severely worn after long-term use and needs to be replaced with a new scraper. However, due to insufficient space for blade replacement, the scraper replacement is difficult and inefficient. Utility Model Content

[0003] Based on this, the present application provides a pressure roller cleaning scraper device and a pressure roller device to solve the problem that the scraper replacement is difficult and inefficient due to insufficient space for blade replacement.

[0004] The technical solutions adopted in this application are as follows:

[0005] 14. The cleaning roller scraper device of claim 13, wherein the scraper assembly comprises a scraper seat and a scraper detachably mounted on the scraper seat, wherein two ends of the scraper seat are rotatably connected to the two mounting plates in a one-to-one correspondence; a horizontal push mechanism is connected to the mounting plate and is used to drive the mounting plate to translate so as to drive the scraper assembly to approach or move away from a pressure roller; a flip mechanism is connected between the two mounting plates and is used to drive the scraper seat to rotate relative to the mounting plate so that the scraper seat has a first position and a second position, wherein the scraper is inclined at a preset angle in the horizontal direction in the first position and is vertically arranged in the second position; a first limiting assembly is connected to the mounting plate and is used to limit the rotation of the scraper seat relative to the mounting plate when the scraper seat is in the first position; and a second limiting assembly is connected to the mounting plate and is used to limit the rotation of the scraper seat relative to the mounting plate when the scraper seat is in the second position.

[0006] Furthermore, a fixed plate is provided on the side of the scraper seat away from the pressure roller, and the fixed plate is fixed between the two mounting plates. The flipping mechanism includes a first cylinder and an L-shaped connecting block. The first cylinder is rotatably mounted on the fixed plate, and one end of the L-shaped connecting block is fixedly connected to the scraper seat, and the other end is rotatably connected to the piston rod of the first cylinder.

[0007] Furthermore, the flipping mechanisms are provided in plurality, and the plurality of flipping mechanisms are evenly spaced and distributed along the length direction of the scraper seat.

[0008] Furthermore, the first limiting assembly includes a first connecting rod, a limiting push rod and a limiting block, the first connecting rod is connected to the mounting plate, the first connecting rod is provided with a threaded hole, the limiting push rod is provided with an adjusting thread, the limiting push rod is installed on the first connecting rod by threaded connection between the adjusting thread and the threaded hole, the limiting block is fixed on the scraper seat, and when the scraper seat is in the first position, the limiting push rod can press on the limiting block.

[0009] Furthermore, the first limiting assembly also includes a rotating seat arranged on the mounting plate, the first connecting rod is rotatably connected to the rotating seat so that the first connecting rod can swing on a vertical plane, and a locking pin is provided on the rotating seat, and the locking pin is used to lock the first connecting rod so that the first connecting rod cannot rotate relative to the rotating seat.

[0010] Furthermore, the second limiting assembly includes a locking hook and a locking groove arranged on the scraper seat, and a locking shaft and a horizontal push rod member arranged on the inner side of the mounting plate, the locking shaft is provided with a recess and a through hole, the horizontal push rod member includes a second connecting rod, a horizontal push rod and a telescopic spring, the second connecting rod is fixedly arranged on the inner side of the mounting plate, the horizontal push rod has a sliding rod section, a boss section and a pressing section arranged in sequence, the sliding rod section of the horizontal push rod is slidably passed through the second connecting rod, the pressing section of the horizontal push rod is slidably passed through the through hole of the locking shaft, the telescopic spring is sleeved on the sliding rod section and the two ends are respectively connected to the second connecting rod and the boss section, when the scraper seat is in the second position, the locking hook is hooked on the locking shaft from the recess, and the end of the pressing section of the horizontal push rod is inserted into the locking groove.

[0011] Furthermore, a hand grip plate is provided at one end of the sliding rod section of the horizontal push rod away from the boss section.

[0012] Furthermore, the push mechanism is a second cylinder, and a driving end of the second cylinder is connected to the mounting plate.

[0013] A pressure roller device, comprising an upper pressure roller, a lower pressure roller, an upper scraper device and a lower scraper device, wherein the upper scraper device and the lower scraper device both adopt the pressure roller cleaning scraper device as described above, the upper scraper device and the lower scraper device are arranged one-to-one on the left side of the upper pressure roller and the lower pressure roller, or the upper scraper device and the lower scraper device are arranged one-to-one on the right side of the upper pressure roller and the lower pressure roller, the upper pressure roller and the lower pressure roller rotate in opposite directions, and the upper scraper device and the lower scraper device are symmetrically arranged.

[0014] Furthermore, a dust collection box is provided on the lower side of the upper scraper device and the lower side of the lower scraper device, respectively, and a dust collection port is provided at the upper end of the dust collection box.

[0015] The pressure roller cleaning scraper device of the present application, when in use, the scraper assembly is located at a working position close to the pressure roller, the scraper is inclined at a preset angle in the horizontal direction, and the scraper scrapes off the dust on the roller surface under the continuous rotation of the pressure roller. The scraper seat will not rotate under the restriction of the first limit assembly, thereby ensuring the stability of the scraper when in use. When it is necessary to replace the scraper, firstly, the scraper assembly is moved away from the pressure roller by the horizontal push mechanism, and then the scraper seat is driven to rotate by the flip mechanism so that the scraper is set vertically, and then the scraper seat will not rotate again under the action of gravity due to the restriction of the second limit assembly, and then the scraper on the scraper seat can be replaced. After the replacement is completed, the restriction of the second limit assembly is released, and the flip mechanism drives the scraper seat to rotate so that the scraper returns to the original position inclined in the horizontal direction, and then the scraper assembly is driven by the horizontal push mechanism to return to the working position close to the pressure roller, and finally the restriction of the first limit assembly is set.

[0016] Therefore, the pressure roller cleaning scraper device of the present application can firstly move the scraper assembly away from the pressure roller through the push mechanism, and can flip the scraper assembly to a position where the scraper is vertically set through the flipping mechanism, thereby changing the position of the scraper removal and installation from between the scraper device and the pressure roller to above or below the scraper device, thereby greatly increasing the operating space for blade changing, facilitating the replacement of the scraper, improving the efficiency of scraper replacement, and making the replacement process safer.

[0017] The pressure roller device of the present application arranges the upper scraper device and the lower scraper device on the same side of the upper pressure roller and the lower pressure roller, respectively, saving a lot of equipment space. The upper scraper device and the lower scraper device adopt the pressure roller cleaning scraper device and are symmetrically arranged, so there is enough operating space when changing the blade, which facilitates the replacement of the scraper and improves the efficiency of scraper replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the pressure roller cleaning scraper device of the present application;

[0020] Figure 2 This is a side structural diagram of the pressure roller cleaning scraper device of the present application when the scraper seat is located at the first position;

[0021] Figure 3 This is a side structural diagram of the pressure roller cleaning scraper device of the present application when the scraper seat is located at the second position;

[0022] Figure 4 This is a schematic structural diagram of the pressure roller device of this application.

[0023] Description of reference numerals:

[0024] 10. Mounting plate; 20. Scraper assembly; 21. Scraper seat; 22. Scraper; 30. Push mechanism; 40. Turning mechanism; 41. First cylinder; 42. L-shaped connecting block; 50. First limit assembly; 51. First connecting rod; 52. Limiting push rod; 53. Limiting block; 54. Rotating seat; 55. Locking pin; 60. Second limit assembly; 61. Lock hook; 62. Locking groove; 63. Locking shaft ; 631, notch; 632, through hole; 64, horizontal push rod; 641, second connecting rod; 642, horizontal push rod; 6421, slide rod section; 6422, boss section; 6423, top pressure section; 643, telescopic spring; 644, hand-held plate; 70, fixed plate; 110, upper pressure roller; 120, lower pressure roller; 130, upper scraper device; 140, lower scraper device; 150, dust box. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below with reference to the accompanying drawings. The present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0026] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0028] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0029] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0030] Embodiment 1

[0031] refer to Figures 1 to 3 The present application provides a roller cleaning scraper device, comprising two mounting plates 10 arranged opposite to each other, a scraper assembly 20, a horizontal push mechanism 30, a flip mechanism 40, a first limit assembly 50, and a second limit assembly 60. The scraper assembly 20 comprises a scraper seat 21 and a scraper 22 detachably mounted on the scraper seat 21, and the two ends of the scraper seat 21 are rotatably connected to the two mounting plates 10 in a one-to-one correspondence. The two mounting plates 10 are respectively connected with horizontal push mechanisms 30, and the horizontal push mechanisms 30 are used to drive the mounting plates 10 to translate so as to drive the scraper assembly 20 to approach or move away from the roller. The flip mechanism 40 is connected between the two mounting plates 10, and is used to drive the scraper seat 21 to rotate relative to the mounting plates 10 so that the scraper seat 21 has a first position and a second position. In the first position, the scraper 22 is inclined at a preset angle in the horizontal direction, and in the second position, the scraper 22 is vertically arranged. The first limiting assembly 50 is connected to the mounting plate 10, and is used to limit the rotation of the scraper seat 21 relative to the mounting plate 10 when the scraper seat 21 is in the first position. The second limiting assembly 60 is connected to the mounting plate 10, and is used to limit the rotation of the scraper seat 21 relative to the mounting plate 10 when the scraper seat 21 is in the second position.

[0032] The pressure roller cleaning scraper 22 device of the present application has the scraper assembly 20 located at a working position close to the pressure roller when in use, and the scraper 22 is inclined at a preset angle in the horizontal direction. As the pressure roller continuously rotates, the scraper 22 scrapes off the dust on the roller surface. The scraper seat 21 does not rotate under the restriction of the first limit assembly 50, thereby ensuring the stability of the scraper 22 when in use. When the scraper 22 needs to be replaced, the scraper assembly 20 is first moved away from the pressure roller by the horizontal pushing mechanism 30, and then the scraper seat 21 is driven to rotate by the flipping mechanism 40 to set the scraper 22 vertically. After that, the scraper seat 21 will not rotate again under the action of gravity due to the restriction of the second limiting assembly 60. At this time, the scraper 22 on the scraper seat 21 can be replaced. After the replacement is completed, the restriction of the second limiting assembly 60 is released, and the flipping mechanism 40 drives the scraper seat 21 to rotate to make the scraper 22 return to its original position inclined in the horizontal direction. Then, the scraper assembly 20 is driven by the horizontal pushing mechanism 30 to return to the working position close to the pressure roller, and finally the restriction of the first limiting assembly 50 is set.

[0033] Therefore, the pressure roller cleaning scraper 22 device of the present application can firstly move the scraper assembly 20 away from the pressure roller through the push mechanism 30, and can flip the scraper assembly 20 to the position where the scraper 22 is vertically set through the flipping mechanism 40, so that the position of removing and installing the scraper 22 is changed from between the scraper 22 device and the pressure roller to above or below the scraper 22 device, thereby greatly increasing the operating space for blade changing, thereby facilitating the replacement of the scraper 22, improving the efficiency of replacing the scraper 22, and making the replacement process safer.

[0034] Specifically, a fixing plate 70 is provided on the side of the scraper seat 21 away from the pressure roller, and the fixing plate 70 is fixed between the two mounting plates 10. The flipping mechanism 40 includes a first cylinder 41 and an L-shaped connecting block 42. The first cylinder 41 is rotatably mounted on the fixing plate 70, and one end of the L-shaped connecting block 42 is fixedly connected to the scraper seat 21, and the other end is rotatably connected to the piston rod of the first cylinder 41.

[0035] It can be understood that when the scraper 22 is tilted at a preset angle in the horizontal direction in the first position, the first limit assembly 50 is released, and the first cylinder 41 is inflated to extend its piston rod, so that the L-shaped connecting block 42 is pushed to move toward the position close to the pressure roller, and when the scraper seat 21 is rotated to connect the mounting plate 10, the scraper seat 21 flips upward, so that the scraper seat 21 is converted to the second position where the scraper 22 is vertically arranged. When the scraper seat 21 is in the second position, the restriction of the second limit assembly 60 is released, and the first cylinder 41 is deflated to retract its piston rod to the original position, and then the scraper seat 21 returns to the first position.

[0036] The flipping mechanism 40 may be provided in plurality, and the plurality of flipping mechanisms 40 are evenly spaced and distributed along the length direction of the scraper seat 21 , so that the scraper seat 21 is more stable when flipping by synchronously inflating and deflating the first cylinder 41 .

[0037] Specifically, the first limiting assembly 50 includes a first connecting rod 51, a limiting push rod 52 and a limiting block 53. The first connecting rod 51 is connected to the mounting plate 10. A threaded hole is provided on the first connecting rod 51. The limiting push rod 52 is provided with an adjusting thread. The limiting push rod 52 is installed on the first connecting rod 51 by threaded connection between the adjusting thread and the threaded hole. The limiting block 53 is fixed on the scraper seat 21. When the scraper seat 21 is located at the first position, the limiting push rod 52 can press on the limiting block 53.

[0038] It can be understood that the limiting push rod 52 is installed on the first connecting rod 51 through the threaded connection between the adjusting thread and the threaded hole, that is, the distance between the top of the limiting push rod 52 and the limiting block 53 can be adjusted by rotating the limiting push rod 52. When the top of the limiting push rod 52 is close to the limiting block 53 and the top of the limiting push rod 52 is pressed on the limiting block 53, the rotation of the scraper seat 21 relative to the mounting plate 10 can be limited, so that the scraper seat 21 cannot swing when the scraper 22 is working, ensuring the stability of the scraper 22 when working. The top of the limiting push rod 52 is far enough away from the limiting block 53 without hindering the scraper seat 21 from swinging from the first position to the second position, that is, the restriction on the scraper seat 21 is released.

[0039] Furthermore, the first limiting assembly 50 further includes a rotating seat 54 disposed on the mounting plate 10, the first connecting rod 51 is rotatably connected to the rotating seat 54 so that the first connecting rod 51 can swing on a vertical plane, and a locking pin 55 is provided on the rotating seat 54, and the locking pin 55 is used to lock the first connecting rod 51 so that the first connecting rod 51 cannot rotate relative to the rotating seat 54. In this way, the limiting push rod 52 can also limit and release the limit of the scraper seat 21 by swinging to different positions on the vertical plane and then locking.

[0040] Specifically, the second limit assembly 60 includes a lock hook 61 and a lock groove 62 arranged on the scraper seat 21, and a lock shaft 63 and a horizontal push rod 64 arranged on the inner side of the mounting plate 10. The lock shaft 63 is provided with a notch 631 and a through hole 632. The horizontal push rod 64 includes a second connecting rod 641, a horizontal push rod 642 and a telescopic spring 643. The second connecting rod 641 is fixedly arranged on the inner side of the mounting plate 10. The horizontal push rod 642 has a sliding rod section 6421, a boss section 6422 and a top pressure section 6423 arranged in sequence. The sliding rod section 6421 of the push rod 642 is slidably penetrated on the second connecting rod 641, and the pressing section 6423 of the horizontal push rod 642 is slidably penetrated in the through hole 632 of the lock shaft 63. The telescopic spring 643 is sleeved on the sliding rod section 6421 and the two ends are respectively connected to the second connecting rod 641 and the boss section 6422. When the scraper seat 21 is located at the second position, the locking hook 61 is hooked on the locking shaft 63 from the recess 631, and the end of the pressing section 6423 of the horizontal push rod 642 is inserted into the locking groove 62.

[0041] It can be understood that when the scraper seat 21 is driven by the flipping mechanism 40 to flip to the second position where the scraper 22 is vertically arranged, the lock hook 61 is hooked to the lock shaft 63 from the notch 631, which limits the scraper seat 21 from continuing to flip. Since the end of the top pressure section 6423 of the horizontal push rod 642 is horizontally inserted into the lock groove 62, the scraper seat 21 is limited from flipping back, thereby locking the scraper seat 21. By locking the scraper seat 21, the safety of the blade changing process can be improved. By pulling the horizontal push rod 642 toward the side away from the scraper seat 21, the end of the top pressure section 6423 of the horizontal push rod 642 can be separated from the lock groove 62, so that the scraper seat 21 can be flipped back to the first position where the scraper 22 is inclined at a preset angle in the horizontal direction, that is, the lock of the scraper seat is released.

[0042] Furthermore, a hand grip plate 644 is provided at one end of the slide bar section 6421 of the horizontal push rod 642 away from the boss section 6422. In this way, it is more convenient to pull the horizontal push rod 642 by holding the hand grip plate 644.

[0043] The push mechanism 30 is a second cylinder, a driving end of the second cylinder is connected to the mounting plate 10, and the second cylinder has a stroke limiting function.

[0044] Embodiment 2

[0045] refer to Figure 4The present application also provides a pressure roller device, including an upper pressure roller 110, a lower pressure roller 120, an upper scraper device 130 and a lower scraper device 140, the upper scraper device 130 and the lower scraper device 140 both adopt the pressure roller cleaning scraper device described in Example 1, the upper scraper device 130 and the lower scraper device 140 are arranged one-to-one on the left side of the upper pressure roller 110 and the lower pressure roller 120, or the upper scraper device 130 and the lower scraper device 140 are arranged one-to-one on the right side of the upper pressure roller 110 and the lower pressure roller 120, the upper pressure roller 110 and the lower pressure roller 120 have opposite rotation directions, the upper scraper device 130 and the lower scraper device 140 are symmetrically arranged, and dust boxes 150 are respectively arranged on the lower sides of the upper scraper device 130 and the lower sides of the lower scraper device 140, and a dust suction port is opened at the upper end of the dust box 150.

[0046] The pressure roller device of the present application arranges the upper scraper device 130 and the lower scraper device 140 on the same side of the upper pressure roller 110 and the lower pressure roller 120, respectively, saving a lot of equipment space. The upper scraper device 130 and the lower scraper device 140 adopt the pressure roller cleaning scraper device and are symmetrically arranged, so there is enough operating space when changing the blade, which facilitates the replacement of the scraper 22 and improves the replacement efficiency of the scraper 22.

[0047] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0048] The above-described embodiments only express several implementation methods of the present application and should not be construed as limiting the scope of the patent application. It should be noted that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be subject to the attached claims.

Claims

1. A pressure roller cleaning scraper device, characterized in that: include: Two mounting plates arranged opposite to each other; A scraper assembly, comprising a scraper seat and a scraper detachably mounted on the scraper seat, wherein two ends of the scraper seat are rotatably connected to the two mounting plates in a one-to-one correspondence; A horizontal push mechanism, connected to the mounting plate, for driving the mounting plate to move horizontally so as to drive the scraper assembly to move closer to or away from the pressure roller; A flip mechanism, connected between the two mounting plates, for driving the scraper holder to rotate relative to the mounting plates so that the scraper holder has a first position and a second position, wherein the scraper is inclined at a preset angle in the horizontal direction in the first position and the scraper is vertically arranged in the second position; A first limiting assembly, connected to the mounting plate, for limiting the rotation of the scraper seat relative to the mounting plate when the scraper seat is located at a first position; The second limiting component is connected to the mounting plate and is used for limiting the rotation of the scraper seat relative to the mounting plate when the scraper seat is located at the second position.

2. The pressure roller cleaning blade device according to claim 1, characterized in that: A fixing plate is provided on the side of the scraper seat away from the pressure roller, and the fixing plate is fixed between the two mounting plates. The flipping mechanism includes a first cylinder and an L-shaped connecting block. The first cylinder is rotatably mounted on the fixing plate, and one end of the L-shaped connecting block is fixedly connected to the scraper seat, and the other end is rotatably connected to the piston rod of the first cylinder.

3. The pressure roller cleaning blade device according to claim 2, characterized in that: There are multiple flipping mechanisms, and the multiple flipping mechanisms are evenly spaced and distributed along the length direction of the scraper seat.

4. The pressure roller cleaning blade device according to claim 1, characterized in that: The first limiting assembly includes a first connecting rod, a limiting push rod and a limiting block, the first connecting rod is connected to the mounting plate, a threaded hole is provided on the first connecting rod, an adjusting thread is provided on the limiting push rod, the limiting push rod is installed on the first connecting rod by threaded connection between the adjusting thread and the threaded hole, the limiting block is fixed on the scraper seat, and when the scraper seat is in the first position, the limiting push rod can press on the limiting block.

5. The pressure roller cleaning blade device according to claim 4, characterized in that: The first limiting assembly also includes a rotating seat arranged on the mounting plate, the first connecting rod is rotatably connected to the rotating seat so that the first connecting rod can swing on a vertical plane, and a locking pin is provided on the rotating seat, and the locking pin is used to lock the first connecting rod so that the first connecting rod cannot rotate relative to the rotating seat.

6. The pressure roller cleaning blade device according to claim 1, characterized in that: The second limiting assembly includes a locking hook and a locking groove arranged on the scraper seat, and a locking shaft and a horizontal push rod member arranged on the inner side of the mounting plate, the locking shaft is provided with a recess and a through hole, and the horizontal push rod member includes a second connecting rod, a horizontal push rod and a telescopic spring, the second connecting rod is fixedly arranged on the inner side of the mounting plate, the horizontal push rod has a sliding rod section, a boss section and a pressing section arranged in sequence, the sliding rod section of the horizontal push rod is slidably passed through the second connecting rod, the pressing section of the horizontal push rod is slidably passed through the through hole of the locking shaft, the telescopic spring is sleeved on the sliding rod section and the two ends are respectively connected to the second connecting rod and the boss section, when the scraper seat is in the second position, the locking hook is hooked on the locking shaft from the recess, and the end of the pressing section of the horizontal push rod is inserted into the locking groove.

7. The pressure roller cleaning blade device according to claim 6, characterized in that: A hand grip plate is provided at one end of the slide bar section of the horizontal push rod away from the boss section.

8. The pressure roller cleaning blade device according to claim 1, characterized in that: The horizontal push mechanism is a second cylinder, and the driving end of the second cylinder is connected to the mounting plate.

9. A pressing roller device, characterized in that: It includes an upper pressure roller, a lower pressure roller, an upper scraper device and a lower scraper device, the upper scraper device and the lower scraper device both adopt the pressure roller cleaning scraper device as described in any one of claims 1 to 8, the upper scraper device and the lower scraper device are arranged one-to-one on the left side of the upper pressure roller and the lower pressure roller, or the upper scraper device and the lower scraper device are arranged one-to-one on the right side of the upper pressure roller and the lower pressure roller, the upper pressure roller and the lower pressure roller have opposite rotation directions, and the upper scraper device and the lower scraper device are symmetrically arranged.

10. The pressing roller device according to claim 9, characterized in that: A dust suction box is respectively arranged on the lower side of the upper scraper device and the lower side of the lower scraper device, and a dust suction port is opened at the upper end of the dust suction box.

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