Paper pressing wheel adjusting mechanism capable of automatically sensing thickness of paper

Abstract

The utility model discloses a paper pressing wheel adjusting mechanism capable of automatically sensing the thickness of paper, which comprises two mounting frames, a traction roller and a paper pressing roller, wherein the traction roller and the paper pressing roller are arranged between the two mounting frames through a first mounting shaft and a second mounting shaft; the detection assembly is arranged on the two mounting frames and used for detecting the thickness of paper, the adjusting assembly is used for adjusting the height of the paper pressing roller according to a detection result, the detection assembly comprises a mounting plate arranged on the sides, close to the paper, of the mounting frames, and a fixing plate is fixedly connected to the side, away from the mounting frames, of the mounting plate; the fixing plate is provided with a laser sensor, the side, close to the fixing plate, of the mounting plate is connected with a U-shaped plate through a fixing rod, and the U-shaped plate is connected with an abutting wheel through a rotating rod. Through the arrangement of the detection assembly, under the adjusting action of the adjusting assembly, the pressing force of the paper pressing roller on paper can be automatically adjusted conveniently according to the thickness of the paper, and manual operation is not needed.

Description

Technical Field

[0001] The utility model relates to the technical field of paper processing, in particular to a paper pressing wheel adjusting mechanism for automatically sensing the thickness of paper. Background Technique

[0002] During the printing process of paper, a traction roller is required to provide power, and a paper pressing roller presses the paper to ensure that the paper can remain flat during the printing process.

[0003] When pressing papers of different thicknesses, in order to ensure that the papers are properly processed during the processing, it is necessary to adjust the pressure of the paper pressing roller on the paper. However, the pressure adjustment of the paper pressing roller in the prior art is mainly manually adjusted, which is not only time-consuming and laborious, with frequent adjustment operations and low work efficiency, but also the flexibility of manually adjusting the height of the paper pressing roller is low, resulting in the situation that some papers are pressed too tightly, thus affecting the processing quality of the paper.

[0004] Therefore, there is an urgent need for a paper pressing wheel adjusting mechanism for automatically sensing the thickness of paper to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a paper pressing wheel adjusting mechanism for automatically sensing the thickness of paper to solve the problems existing in the process of manually adjusting the pressure of the paper pressing roller on the paper as mentioned in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A paper pressing wheel adjusting mechanism for automatically sensing the thickness of paper, which includes two mounting frames, a traction roller and a paper pressing roller arranged between the two mounting frames through a first mounting shaft and a second mounting shaft, and further includes a detection component arranged on the two mounting frames for detecting the thickness of the paper and an adjusting component for adjusting the height of the paper pressing roller according to the detection result;

[0007] The detection component includes a mounting plate arranged on the side of the mounting frame close to the paper. A fixing plate is fixedly connected to the side of the mounting plate away from the mounting frame. The fixing plate is provided with a laser sensor. A U-shaped plate is connected to the side of the mounting plate close to the fixing plate through a fixing rod. The U-shaped plate is connected with a pressing wheel through a rotating rod. The mounting frame is provided with a driving component for driving the mounting plate.

[0008] The adjusting assembly includes an adjusting hole formed in the side wall of the mounting frame. The adjusting hole is connected to an adjusting plate through a guiding assembly. The adjusting plate is provided with a bearing, and one end of the second mounting shaft is connected to the bearing. One side of the mounting frame away from the traction roller is connected to a top plate through two bolts. The top plate is slidably connected to an adjusting rod, and one end of the adjusting rod is connected to the adjusting plate. A push rod motor is provided on the side of the top plate away from the adjusting plate, and the output end of the push rod motor is connected to the adjusting rod.

[0009] The guiding assembly includes guide rails fixedly connected to opposite inner walls of the adjusting hole. Two guide rails are slidably connected to a guiding plate, and opposite ends of the two guiding plates are connected to the adjusting plate.

[0010] The fixing plate is provided with a cleaning assembly for cleaning the detection end of the laser sensor. The cleaning assembly includes a connecting plate fixedly connected to the side of the fixing plate close to the pressing wheel. The connecting plate is provided with a U-shaped tube. One end of the U-shaped tube faces the detection end of the laser sensor, and the other end of the U-shaped tube is connected to a U-shaped plate and is concentrically arranged with the rotating rod. One end of the rotating rod close to the U-shaped tube penetrates through the U-shaped plate and is fixedly connected to a rotating shaft, and a plurality of fan blades are fixedly connected to the side wall of the rotating shaft.

[0011] The driving assembly includes two symmetrically arranged driving tubes fixedly connected to the side of the mounting plate close to the mounting frame. One of the two driving tubes is slidably connected to a driving rod, and one end of the driving rod is connected to the mounting frame. The other of the two driving tubes is threadedly connected to a threaded rod.

[0012] A driving motor is provided on the side of the mounting frame away from the mounting plate, and the output end of the driving motor is connected to the threaded rod.

[0013] Compared with the prior art, the beneficial effects of the present utility model are:

[0014] With the setting of the detection assembly and under the adjustment of the adjusting assembly, it is convenient to automatically adjust the pressing force of the pressing roller on the paper according to the thickness of the paper, without manual operation. Thus, while improving the adjustment efficiency of the pressing force on the paper, the flexibility and accuracy of the adjustment of the pressing force on the paper are improved, further ensuring the processing quality of the paper. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0016] Figure 2 is a schematic diagram of the structure of the adjusting assembly of the present utility model;

[0017] Figure 3 is Figure 2 the enlarged view at A in

[0018] Figure 4 Schematic diagram of the detection component structure of the present utility model;

[0019] Figure 5 is Figure 4 Enlarged view at position B in

[0020] Figure 6 is Figure 5 Enlarged view at position C in

[0021] In the figure: 101, mounting frame; 102, first mounting shaft; 103, second mounting shaft; 104, traction roller; 105, paper pressing roller; 201, mounting plate; 202, fixing plate; 203, laser sensor; 204, fixing rod; 205, U-shaped plate; 206, rotating rod; 207, pressing wheel; 301, adjustment hole; 302, adjustment plate; 303, bearing; 304, top plate; 305, adjustment rod; 306, push rod motor; 401, guide rail; 402, guide plate; 501, connecting plate; 502, U-shaped pipe; 503, rotating shaft; 504, fan blade; 601, driving pipe; 602, driving rod; 603, threaded rod; 604, driving motor. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0023] Embodiment 1

[0024] Please refer to Figures 1-6 , a paper pressing wheel adjustment mechanism for automatically sensing the paper thickness in the figure, including two mounting frames 101 and a traction roller 104 and a paper pressing roller 105 disposed between the two mounting frames 101 through a first mounting shaft 102 and a second mounting shaft 103, further including a detection component disposed on the two mounting frames 101 for detecting the paper thickness and an adjustment component for adjusting the height of the paper pressing roller 105 according to the detection result. By using two symmetrically arranged detection components, two detection results can be compared. When the difference between the two detection results is within the set range, the average value of the two detection results is taken. When the difference between the two detection results exceeds the set range, an alarm is given. At this time, the staff checks whether the detection result is abnormal due to foreign objects on the paper surface or a malfunction of the laser sensor 203, etc., so as to improve the accuracy of the paper thickness detection;

[0025] The detection component includes a mounting plate 201 disposed on the side of the mounting frame 101 close to the paper. A fixing plate 202 is fixedly connected to the side of the mounting plate 201 away from the mounting frame 101. The fixing plate 202 is provided with a laser sensor 203 (model: HWLZ6-D100N1). One side of the mounting plate 201 close to the fixing plate 202 is connected to a U-shaped plate 205 through a fixing rod 204. The U-shaped plate 205 is connected to a pressing wheel 207 through a rotating rod 206. The pressing wheel 207 is at the same height as the traction roller 104, so as to ensure full contact with the paper. The mounting frame 101 is provided with a driving component for driving the mounting plate 201;

[0026] It should be noted here that: through the setting of the detection component, under the adjustment of the adjustment component, it is convenient to automatically adjust the pressing force of the pressing roller 105 on the paper according to the thickness of the paper, without manual operation, so as to improve the adjustment efficiency of the pressing force on the paper while improving the flexibility and accuracy of the adjustment of the pressing force on the paper, thus further ensuring the processing quality of the paper.

[0027] Please refer to Figure 2 and Figure 3 As shown in the figure, the adjustment component includes an adjustment hole 301 opened on the side wall of the mounting frame 101. The adjustment hole 301 is connected to an adjustment plate 302 through a guiding component. The adjustment plate 302 is provided with a bearing 303. One end of the second mounting shaft 103 is connected to the bearing 303. The side of the mounting frame 101 away from the traction roller 104 is connected to a top plate 304 through two bolts. The top plate 304 is slidably connected to an adjustment rod 305. One end of the adjustment rod 305 is connected to the adjustment plate 302. A push rod motor 306 is provided on the side of the top plate 304 away from the adjustment plate 302. The output end of the push rod motor 306 is connected to the adjustment rod 305;

[0028] It should be noted here that: through the setting of the adjustment component, it is convenient to drive the pressing roller 105 to move, so as to realize the height adjustment of the pressing roller 105 and further adjust the pressing force on the paper.

[0029] Please refer to Figure 2 and Figure 3 As shown in the figure, the guiding component includes guide rails 401 fixedly connected to the opposite inner walls of the adjustment hole 301. Two guide rails 401 are slidably connected to a guide plate 402. The opposite ends of the two guide plates 402 are connected to the adjustment plate 302;

[0030] It should be noted here that: through the setting of the guiding component, it provides guiding and limiting functions for the movement of the adjustment plate 302.

[0031] Working principle: During the paper processing, the rotation of the traction roller 104 drives the paper to be continuously conveyed between the traction roller 104 and the paper pressing roller 105. During the paper conveyance, the pressing wheel 207 on the side of the mounting frame 101 close to the paper conveyance direction will abut against the surface of the paper. Then, a laser pulse is emitted by the laser emitter of the laser sensor 203 and directed towards the paper surface. When the laser pulse hits the paper surface and is reflected back, the receiver will receive the reflected optical signal. Then, the processing circuit calculates the flight time of the laser pulse, that is, the time difference from emission to reception. Finally, the distance to the paper surface, that is, the thickness of the paper, is calculated based on the speed of light and the flight time. The initial position of the laser sensor 203 is set to zero, that is, when no paper is placed, the distance between the laser sensor 203 and the surface of the pressing wheel 207 is zero;

[0032] After the laser sensor 203 completes the thickness detection of the paper, it sends an electrical signal to the controller. After analyzing and processing the electrical signal, the controller starts the push rod motor 306 according to the result of the analysis and processing. Then, under the driving force and the guiding action of the guiding component, the second mounting shaft 103 on the adjusting rod 305 is driven to move, thereby further adjusting the distance between the paper pressing roller 105 and the traction roller 104, and then realizing the automatic adjustment of the paper pressure without manual operation. Thus, while improving the adjustment efficiency of the paper pressing force, the flexibility and precision of the paper pressing force adjustment are improved, and further the processing quality of the paper is ensured.

[0033] Embodiment 2

[0034] Please refer to Figure 4 , this embodiment further illustrates Embodiment 1. The fixed plate 202 in the figure is provided with a cleaning component for cleaning the detection end of the laser sensor 203. The cleaning component includes a connecting plate 501 fixedly connected to the side of the fixed plate 202 close to the pressing wheel 207. The connecting plate 501 is provided with a U-shaped tube 502. One end of the U-shaped tube 502 faces the detection end of the laser sensor 203, and the other end of the U-shaped tube 502 is connected to the U-shaped plate 205 and is concentrically arranged with the rotating rod 206. A plurality of air inlet holes are opened at the side wall of the U-shaped tube 502 close to the U-shaped plate 205 to facilitate the air flow circulation. One end of the rotating rod 206 close to the U-shaped tube 502 penetrates through the U-shaped plate 205 and is fixedly connected with a rotating shaft 503. A plurality of fan blades 504 are fixedly connected to the side wall of the rotating shaft 503;

[0035] It should be noted here that: through the setting of the cleaning component, during the rotation of the pressing wheel 207, it will drive the rotation of multiple fan blades 504 on the rotating shaft 503, and then use the rotation of each fan blade 504 to generate air flow. Thus, under the guiding action of the U-shaped tube 502, it blows towards the detection end of the laser sensor 203, thereby cleaning the floating dust in the working environment adhering to the detection end of the laser sensor 203, and ensuring the detection accuracy of the laser sensor 203 for the paper thickness.

[0036] Embodiment 3

[0037] Please refer to Figure 4 and Figure 5 , this embodiment is a further explanation of other embodiments. The illustrated driving component includes two symmetrically arranged driving tubes 601 fixedly connected to one side of the mounting plate 201 close to the mounting bracket 101. One of the two driving tubes 601 is slidably connected with a driving rod 602, and one end of the driving rod 602 is connected to the mounting bracket 101. The other of the two driving tubes 601 is threadedly connected with a threaded rod 603. A driving motor 604 is provided on the side of the mounting bracket 101 away from the mounting plate 201, and the output end of the driving motor 604 is connected to the threaded rod 603;

[0038] It should be noted here that: through the setting of the driving component, when the driving motor 604 is started, it drives the threaded rod 603 to rotate. Under the threaded meshing transmission of the threaded rod 603 and the driving tube 601 and the guiding action of the driving rod 602, it will drive the mounting plate 201 to move, thereby further moving the laser sensor 203 and the pressing wheel 207, so as to adapt to the detection of papers with different widths.

[0039] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A paper pressing wheel adjustment mechanism for automatically sensing paper thickness, comprising: Two mounting frames (101) and a traction roller (104) and a paper pressing roller (105) arranged between the two mounting frames (101) via a first mounting shaft (102) and a second mounting shaft (103); It is characterized by further comprising: A detection component arranged on two mounting frames (101) for detecting the thickness of paper and an adjustment component for adjusting the height of a paper pressing roller (105) according to the detection result; The detection component comprises a mounting plate (201) arranged on a side of the mounting frame (101) close to the paper; a fixing plate (202) is fixedly connected to a side of the mounting plate (201) away from the mounting frame (101); the fixing plate (202) is provided with a laser sensor (203); a side of the mounting plate (201) close to the fixing plate (202) is connected to a U-shaped plate (205) via a fixing rod (204); the U-shaped plate (205) is connected to a clamping wheel (207) via a rotating rod (206); and the mounting frame (101) is provided with a driving component for driving the mounting plate (201).

2. The paper pressing wheel adjustment mechanism for automatically sensing paper thickness according to claim 1, characterized in that: The adjustment assembly comprises an adjustment hole (301) opened on a side wall of a mounting frame (101); the adjustment hole (301) is connected to an adjustment plate (302) via a guide assembly; the adjustment plate (302) is provided with a bearing (303); one end of the second mounting shaft (103) is connected to the bearing (303); a side of the mounting frame (101) away from the traction roller (104) is connected to a top plate (304) via two bolts; the top plate (304) is slidably connected to an adjustment rod (305); one end of the adjustment rod (305) is connected to the adjustment plate (302); a push rod motor (306) is provided on a side of the top plate (304) away from the adjustment plate (302); an output end of the push rod motor (306) is connected to the adjustment rod (305).

3. The paper pressing wheel adjustment mechanism for automatically sensing paper thickness according to claim 2, characterized in that: The guide assembly comprises guide rails (401) fixedly connected to two inner walls opposite to the adjustment hole (301), the two guide rails (401) being slidably connected to guide plates (402), and opposite ends of the two guide plates (402) being connected to the adjustment plate (302).

4. The paper pressing wheel adjustment mechanism for automatically sensing paper thickness according to claim 1, characterized in that: The fixed plate (202) is provided with a cleaning assembly for cleaning the detection end of the laser sensor (203), the cleaning assembly comprising a connecting plate (501) fixedly connected to a side of the fixed plate (202) close to the abutting wheel (207), the connecting plate (501) being provided with a U-shaped tube (502), one end of the U-shaped tube (502) being opposite to the detection end of the laser sensor (203), the other end of the U-shaped tube (502) being connected to the U-shaped plate (205) and being arranged concentrically with the rotating rod (206), the end of the rotating rod (206) close to the U-shaped tube (502) penetrating the U-shaped plate (205) and being fixedly connected to a rotating shaft (503), and a plurality of fan blades (504) being fixedly connected to a side wall of the rotating shaft (503).

5. The paper pressing wheel adjustment mechanism for automatically sensing paper thickness according to claim 1, characterized in that: The driving assembly comprises two driving tubes (601) fixedly connected to a side of a mounting plate (201) close to a mounting frame (101) and arranged symmetrically with each other, one of the two driving tubes (601) being slidably connected to a driving rod (602), one end of the driving rod (602) being connected to the mounting frame (101), and the other of the two driving tubes (601) being threadedly connected to a threaded rod (603).

6. The paper pressing wheel adjustment mechanism for automatically sensing paper thickness according to claim 5, characterized in that: A drive motor (604) is provided on a side of the mounting frame (101) away from the mounting plate (201), and an output end of the drive motor (604) is connected to the threaded rod (603).

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