A stability monitoring device for a paper feed roller

Abstract

The utility model relates to monitoring equipment technical field especially, it relates to a kind of stability monitoring device when paper feed roller rotates, including support frame and the annular support frame of up and down movable setting in support frame, still including annular movable frame and elastic connecting portion, annular support frame and annular movable frame are elastically connected between by several elastic connecting portion, annular movable frame sets fixed shell, the side of fixed shell is equipped with upper contact component and lower contact component, the cavity of fixed shell is provided with the adjusting assembly for controlling upper contact component and lower contact component each other close or each other away activity;Support frame is equipped with monitoring part. Annular movable frame shakes on annular support frame, monitoring part captures the position variation of annular movable frame, when the range of variation exceeds the threshold range of qualification, paper feed roller needs to be overhauled, when the range of variation is in the threshold range of qualification, paper feed roller normal stable work, reach the effect of real-time monitoring.

Description

Technical Field

[0001] This utility model relates to the field of monitoring equipment technology, and in particular to a stability monitoring device for the rotation of a paper feed roller. Background Technology

[0002] In printing, packaging, and paper processing, the paper feed roller is the core transmission component of various paper conveying equipment. Its rotational stability directly determines the uniformity, positional accuracy, and production continuity of paper conveying. During long-term high-load operation, the paper feed roller is susceptible to abnormal rotation due to multiple factors: First, mechanical wear, such as bearing wear, journal deformation, and loose couplings leading to concentricity deviations of the shaft; second, installation errors, such as misalignment during reassembly after equipment maintenance, which can easily cause radial runout of the shaft; and third, load fluctuations, such as uneven paper thickness and changes in conveying tension, which can cause imbalance in the force on the paper feed roller, resulting in shaft offset. That is, the paper feed roller shaft does not rotate strictly around its own axis, but instead exhibits radial (perpendicular to the axis) or axial (parallel to the axis) offset wobbling.

[0003] Currently, there are still significant technical limitations in the industry's methods for monitoring the rotational stability of paper feed rollers. Specifically, some companies have introduced general-purpose vibration sensors such as piezoelectric and capacitive sensors, which are installed on the paper feed roller support or equipment frame to indirectly reflect the condition of the paper feed roller by collecting vibration signals.

[0004] However, the above methods suffer from severe signal interference and insufficient monitoring specificity. On the one hand, the vibrations of other components (such as motors, gear transmission mechanisms, and paper cutting mechanisms) during equipment operation can superimpose with the vibration signal of the paper feed roller, causing the sensor to collect "overall equipment vibration" rather than "the paper feed roller shaft offset signal." For example, high-frequency motor vibration can easily mask the low-frequency radial offset of the paper feed roller, resulting in "misjudgment (misjudging motor vibration as paper feed roller abnormality)" or "missed judgment (slight paper feed roller offset is covered by interference signal)." On the other hand, general vibration sensors can only monitor the vibration amplitude and cannot distinguish whether the vibration source is paper feed roller shaft offset, bearing wear, or other component failure, making it difficult to achieve "precise positioning monitoring" of the paper feed roller's stability. Therefore, a stability monitoring device for the rotation of the paper feed roller is provided to solve the above technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a stability monitoring device for the rotation of the paper feed roller to address the shortcomings of existing technologies, thereby solving the technical problem that existing monitoring equipment cannot achieve accurate monitoring.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows: A stability monitoring device for a paper feed roller during rotation includes a support frame and an annular support frame that is movably disposed on the support frame. It also includes an annular movable frame and elastic connecting parts. The centerlines of the annular support frame and the annular movable frame are arranged laterally and are coaxially arranged. The annular support frame and the annular movable frame are elastically connected by a number of elastic connecting parts. The number of elastic connecting parts are used to allow the annular movable frame to swing freely on the annular support frame. The annular movable frame is provided with a fixed housing with a cavity. On the side of the fixed housing are upper and lower contact parts that are symmetrically arranged based on the axis of the annular movable frame and can move closer or further apart from each other. The cavity of the fixed housing is provided with an adjustment component for controlling the movement of the upper and lower contact parts closer or further apart from each other. The support frame is provided with a monitoring unit for monitoring the real-time position of the annular movable frame.

[0007] Furthermore, the monitoring unit includes a fixed rod that is fixedly installed on the annular movable frame and arranged laterally along its axis. The axis of the fixed rod is parallel to the center line of the annular movable frame. An identification part is installed on the end of the fixed rod. A support member is fixedly installed on the support frame. A visual sensor coaxially arranged with the identification part and used to monitor the real-time position of the identification part is installed on the top of the support member.

[0008] Furthermore, the support frame is equipped with a display screen.

[0009] Furthermore, several elastic connecting parts are arranged in an equidistant array along the circumference of the annular movable frame.

[0010] Furthermore, the elastic connection includes a first connector fixedly disposed on the inner side wall of the annular support frame and a second connector fixedly disposed on the outer side wall of the annular movable frame, and also includes a spring, one end of which is fixedly disposed on the first connector and the other end of which is fixedly disposed on the second connector.

[0011] Furthermore, the support frame is equipped with a support seat, the annular support frame is fixedly equipped with a lifting seat, the lifting seat is movably mounted on the support seat, and the support frame is equipped with a control component for controlling the annular support frame to move up and down.

[0012] Furthermore, the control component includes a vertically arranged threaded cylinder with its top fixed to an annular support frame. The support frame is equipped with a servo motor with its output shaft facing upward. The output shaft of the servo motor is equipped with a threaded rod that is coaxial with the threaded cylinder, and the threaded rod is threadedly connected to the threaded cylinder.

[0013] Furthermore, the upper contact component includes an upper movable frame that is movably disposed on the fixed housing. One end of the upper movable frame extends to the outside of the fixed housing and a first arc-shaped rod is mounted on the end. The downward-facing arc surface of the first arc-shaped rod is concave, and a plurality of first support blocks are fixedly disposed on the arc surface. The plurality of first support blocks are arranged in an equidistant array along the arc surface trajectory, and each first support block is rotatably provided with a first roller for contacting the end of the rotating shaft of the paper feeding roller.

[0014] Furthermore, the lower contact component includes a lower movable frame located directly below the upper movable frame and movably mounted on the fixed housing. One end of the lower movable frame extends to the outside of the fixed housing and a second arc-shaped rod is mounted on that end. The upward arc surface of the second arc-shaped rod is concave, and a plurality of second support blocks are fixedly mounted on the arc surface. The plurality of second support blocks are arranged in an equidistant array along the arc surface trajectory, and each second support block is rotatably mounted with a second roller for contacting the end of the rotating shaft of the paper feeding roller.

[0015] Furthermore, the adjustment assembly includes several guide rods installed in the fixed housing and arranged vertically. The upper movable frame and the lower movable frame are slidably mounted on the guide rods. It also includes a support bearing installed in the fixed housing. A positive and negative threaded rod with a vertically arranged axis is rotatably mounted on the support bearing. The two ends of the positive and negative threaded rods extend to the outer top and outer bottom of the fixed housing, respectively, and a turning element is installed on both ends of the positive and negative threaded rods. The upper movable frame and the lower movable frame are threadedly connected to different threaded portions of the positive and negative threaded rods, respectively.

[0016] The beneficial effects of this utility model are as follows: By controlling the up-and-down movement of the annular support frame on the support frame, the height of the upper and lower contact parts can be adjusted. Then, by pushing the support frame to move, the lateral position of the upper and lower contact parts can be adjusted, so that one end of the paper feeding roller's shaft is placed between the upper and lower contact parts, and the axis is coaxial with the axis of the annular movable frame. Then, by turning the adjustment component, the upper and lower contact parts can be controlled to move closer to each other, so that both of them simultaneously contact and clamp the surface of the paper feeding roller's shaft. When the paper feeding roller's shaft rotates to transport paper, if the axis of rotation of the paper feeding roller is offset (i.e., the end of the paper feeding roller's shaft does not rotate around its own axis), force will be applied to the upper and lower contact parts, thereby causing the annular movable frame to sway on the annular support frame.

[0017] When the annular movable frame wobbles on the annular support frame, the monitoring unit captures the positional changes of the annular movable frame through high frame rate sampling and dynamic tracking algorithms. If the range of change exceeds the qualified threshold range, the paper feeding roller needs to be inspected. When the range of change is within the qualified threshold range, the paper feeding roller works normally and stably, achieving the effect of real-time monitoring. Under the action of this monitoring device, problems when the paper feeding roller rotates can be detected in time, reducing the accident rate. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is a three-dimensional structural schematic diagram of the present invention from another perspective.

[0020] Figure 3 This is a partial structural schematic diagram of the present invention.

[0021] Figure 4 This is a schematic diagram of the internal structure of the fixed shell of this utility model.

[0022] The reference numerals in the figures include: 1. Support frame; 101. Caster wheel; 102. Support base; 2. Annular support frame; 201. Lifting seat; 202. Threaded cylinder; 203. Threaded rod; 204. Servo motor; 3. Annular movable frame; 4. Elastic connection part; 401. First connecting piece; 402. Second connecting piece; 403. Spring; 5. Fixed housing; 501. Fixing piece; 6. Adjustment assembly; 601. Guide rod; 602. Support bearing; 603. Positive and negative threaded rod; 604. Tightening part; 7. Upper contact part; 701. Upper movable frame; 702. First arc-shaped rod; 703. First support block; 704. First roller; 8. Lower contact part; 801. Lower movable frame; 802. Second arc-shaped rod; 803. Second support block; 804. Second roller; 9. Fixing rod; 10. Marking part; 11. Vision sensor; 12. Display screen; 13. Supporting piece. Detailed Implementation

[0023] The following is a detailed description of a stability monitoring device for the rotation of a paper feed roller according to the present invention, with reference to the accompanying drawings.

[0024] like Figure 1-2 As shown, an embodiment of the stability monitoring device for the rotation of a paper feed roller according to this utility model includes a support frame 1 and several casters 101 mounted on the bottom of the support frame 1. By providing several casters 101 (each caster 101 has a self-locking function and locks when no movement is needed), the support frame 1 can be moved. The monitoring device also includes an annular support frame 2. The support frame 1 is equipped with a support seat 102, and the annular support frame 2 is fixedly equipped with a lifting seat 201. The lifting seat 201 is movably mounted on the support seat 102. The support frame 1 is equipped with a control component for controlling the up-and-down movement of the annular support frame 2. By operating the control component, the up-and-down movement of the annular support frame 2 is controlled. Under the action of the lifting seat 201 and the support seat 102, the annular support frame 2 becomes more stable when moving up and down on the support frame 1.

[0025] This monitoring device also includes an annular movable frame 3 and elastic connecting parts 4. The centerlines of the annular support frame 2 and the annular movable frame 3 are both arranged laterally and are coaxially positioned. The annular support frame 2 and the annular movable frame 3 are elastically connected by several elastic connecting parts 4. The elastic connecting parts 4 are arranged in an equidistant array along the circumference of the annular movable frame 3. The elastic connecting parts 4 are used to allow the annular movable frame 3 to swing freely relative to the annular support frame 2 within a certain range. When an irregular force is applied to the annular movable frame 3, under the elastic action of the elastic connecting parts 4, the annular movable frame 3 can swing irregularly on the annular support frame 2.

[0026] A fixed housing 5 with a cavity is provided inside the annular movable frame 3. The fixed housing 5 is fixed to the annular movable frame 3 by a fastener 501. An upper contact component 7 and a lower contact component 8 are mounted on the side of the fixed housing 5, arranged vertically and capable of moving closer or further apart. The upper contact component 7 and the lower contact component 8 are symmetrically arranged based on the axis of the annular movable frame 3. An adjustment component 6 for controlling the movement of the upper contact component 7 and the lower contact component 8 closer or further apart is provided inside the cavity of the fixed housing 5. By controlling the vertical movement of the annular support frame 2 on the support frame 1, the height of the upper contact component 7 and the lower contact component 8 can be adjusted. Then, by pushing the support frame 1 to move, the lateral position of the upper contact component 7 and the lower contact component 8 can be adjusted, thereby placing one end of the paper feed roller's shaft between the upper contact component 7 and the lower contact component 8 (e.g., ...). Figure 3 As shown), the axis is coaxial with the axis of the annular movable frame 3. By turning the adjusting component 6, the upper contact component 7 and the lower contact component 8 are controlled to move closer to each other, so that they simultaneously contact the rotating shaft surface of the paper feed roller and clamp it. When the rotating shaft of the paper feed roller rotates to transport the paper, if the axis of rotation of the paper feed roller is deviated (that is, the end of the rotating shaft of the paper feed roller does not rotate around its own axis), it will exert force on the upper contact component 7 and the lower contact component 8, thereby causing the annular movable frame 3 to sway on the annular support frame 2.

[0027] The annular movable frame 3 is fixedly provided with a fixed rod 9 arranged horizontally along its axis and parallel to its center line. The end of the fixed rod 9 away from the annular movable frame 3 is provided with an identification part 10. The support frame 1 is fixedly provided with a support member 13. The top of the support member 13 is provided with a vision sensor 11 that is coaxially arranged with the identification part 10 and used to detect the real-time position of the identification part 10. The support frame 1 is provided with a display screen 12 for displaying the position data of the identification part 10 detected by the vision sensor 11.

[0028] When the annular movable frame 3 wobbles on the annular support frame 2, the marking part 10 on the fixed rod 9 also wobbles. At this time, the vision sensor 11 captures the position change of the marking part 10 through high frame rate sampling and dynamic tracking algorithm. If the range of change exceeds the qualified threshold range, the position change data is transmitted to the display screen 12 for display by the staff for reference, achieving the effect of real-time monitoring. When the end of the paper feed roller rotates around its own axis, the annular movable frame 3 does not wobble or wobbles slightly, and the vision sensor 11 detects that the range of position change of the marking part 10 is within the qualified threshold range.

[0029] In this embodiment, the control component includes a vertically arranged threaded cylinder 202 with its top end fixedly mounted to the annular support frame 2. The support frame 1 is equipped with a servo motor 204 with its output shaft facing upwards. The output shaft of the servo motor 204 is equipped with a threaded rod 203 coaxially mounted with the threaded cylinder 202, and the threaded rod 203 is threadedly connected to the threaded cylinder 202. By operating the servo motor 204 to drive the threaded rod 203 to rotate, the annular support frame 2 can be controlled to move up and down due to the threaded engagement between the threaded rod 203 and the threaded cylinder 202.

[0030] like Figure 3 As shown, the elastic connecting part 4 includes a first connecting member 401 fixedly disposed on the inner side wall of the annular support frame 2 and a second connecting member 402 fixedly disposed on the outer side wall of the annular movable frame 3. It also includes a spring 403, one end of which is fixedly disposed on the first connecting member 401, and the other end of which is fixedly disposed on the second connecting member 402. By providing several springs 403 between the annular support frame 2 and the annular movable frame 3, the annular movable frame 3 can freely sway on the annular support frame 2 around a transversely arranged axis (i.e., the axis of rotation of the paper feed roller).

[0031] Furthermore, the upper contact component 7 includes an upper movable frame 701 that is movably mounted on the fixed housing 5. One end of the upper movable frame 701 extends to the outside of the fixed housing 5 and a first arc-shaped rod 702 is mounted on that end. The downward-facing arc surface of the first arc-shaped rod 702 is concave, and a plurality of first support blocks 703 are fixedly mounted on the arc surface. The plurality of first support blocks 703 are arranged in an equidistant array along the arc surface trajectory. Each first support block 703 is rotatably equipped with a first roller 704 for contacting the end of the rotating shaft of the paper feed roller. By controlling the upper movable frame 701 to move downward, it brings the plurality of first rollers 704 into contact with the end of the rotating shaft of the paper feed roller. When the end of the rotating shaft of the paper feed roller rotates, the plurality of first rollers 704 can roll on the surface of the end of the rotating shaft of the paper feed roller to reduce friction. Furthermore, by setting a plurality of first rollers 704, paper feed roller shafts of different sizes can be accommodated.

[0032] The upper contact component 7 and the lower contact component 8 have the same structure and are arranged symmetrically. The lower contact component 8 includes a lower movable frame 801 located directly below the upper movable frame 701 and movably mounted on the fixed housing 5. One end of the lower movable frame 801 extends to the outside of the fixed housing 5 and is equipped with a second arc-shaped rod 802. The upward-facing arc surface of the second arc-shaped rod 802 is concave, and several second support blocks 803 are fixedly mounted on this arc surface. The several second support blocks 803 are arranged in an equidistant array along the arc surface trajectory. Each second support block 803 is rotatably equipped with a second roller 804 for contacting the end of the rotating shaft of the paper feed roller. By controlling the upper movable frame 701 and the lower movable frame 801 to move closer to each other, the first roller 704 and the second roller 804 simultaneously contact the end surface of the rotating shaft of the paper feed roller, clamping the end of the rotating shaft of the paper feed roller. After clamping, it is easier to apply force to the annular movable frame 3 and also improves the accuracy of the annular movable frame 3 when it shakes.

[0033] like Figure 4 As shown, the adjusting assembly 6 includes several guide rods 601 installed inside the fixed housing 5 and arranged vertically. The upper movable frame 701 and the lower movable frame 801 are slidably mounted on the guide rods 601. It also includes a support bearing 602 installed inside the fixed housing 5. A vertically arranged threaded rod 603 is rotatably mounted on the support bearing 602. The two ends of the threaded rod 603 extend to the outer top and bottom of the fixed housing 5, respectively, and a tightening element 604 is installed on both ends of the threaded rod 603. The upper movable frame 701 and the lower movable frame 801 are threadedly connected to different threaded portions of the threaded rod 603. The structure of the tightening element 604 is the same as the head structure of an internal hexagon screw. After the tightening element 604 is turned with an internal hexagon wrench, the threaded rod 603 rotates, controlling the upper movable frame 701 and the lower movable frame 801 to move closer or further apart, thereby adjusting the distance between them.

[0034] In summary, this utility model possesses the aforementioned excellent characteristics, enabling it to achieve unprecedented efficiency in use and thus become a highly practical product.

[0035] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A stability monitoring device for a paper feed roller during rotation, characterized in that: It includes a support frame (1) and an annular support frame (2) that is movably mounted on the support frame (1), and also includes an annular movable frame (3) and elastic connecting parts (4). The center lines of the annular support frame (2) and the annular movable frame (3) are arranged laterally and are coaxially arranged. The annular support frame (2) and the annular movable frame (3) are elastically connected by several elastic connecting parts (4). The several elastic connecting parts (4) are used to allow the annular movable frame (3) to swing freely on the annular support frame (2). The annular movable frame (3) is provided with a fixed housing (5) with a cavity. The side of the fixed housing (5) is provided with an upper contact component (7) and a lower contact component (8) that are symmetrically arranged based on the axis of the annular movable frame (3) and can move closer or further away from each other. The cavity of the fixed housing (5) is provided with an adjustment component (6) for controlling the upper contact component (7) and the lower contact component (8) to move closer or further away from each other. The support frame (1) is provided with a monitoring unit for monitoring the real-time position of the annular movable frame (3).

2. The stability monitoring device for the paper feed roller during rotation according to claim 1, characterized in that: The monitoring unit includes a fixed rod (9) that is fixedly installed on the annular movable frame (3) and arranged laterally on the axis. The axis of the fixed rod (9) is parallel to the axis of the annular movable frame (3). An identification part (10) is installed on the end of the fixed rod (9). A support member (13) is fixedly installed on the support frame (1). A visual sensor (11) is installed on the top of the support member (13) and is coaxially arranged with the identification part (10) for monitoring the real-time position of the identification part (10).

3. The stability monitoring device for the rotation of the paper feed roller according to claim 2, characterized in that: The support frame (1) is equipped with a display screen (12).

4. The stability monitoring device for the paper feed roller during rotation according to claim 1, characterized in that: Several elastic connecting parts (4) are arranged in an equidistant array along the circumference of the annular movable frame (3).

5. The stability monitoring device for the paper feed roller during rotation according to claim 4, characterized in that: The elastic connection part (4) includes a first connector (401) fixedly disposed on the inner side wall of the annular support frame (2) and a second connector (402) fixedly disposed on the outer side wall of the annular movable frame (3), and also includes a spring (403), one end of the spring (403) being fixedly disposed on the first connector (401) and the other end being fixedly disposed on the second connector (402).

6. The stability monitoring device for the paper feed roller during rotation according to claim 1, characterized in that: The support frame (1) is equipped with a support seat (102), and the annular support frame (2) is fixedly equipped with a lifting seat (201). The lifting seat (201) is movably mounted on the support seat (102). The support frame (1) is equipped with a control component for controlling the annular support frame (2) to move up and down.

7. The stability monitoring device for the paper feed roller during rotation according to claim 6, characterized in that: The control component includes a vertically arranged threaded cylinder (202) with its top fixed to the annular support frame (2). The support frame (1) is equipped with a servo motor (204) with its output shaft facing upward. The output shaft of the servo motor (204) is equipped with a threaded rod (203) that is coaxial with the threaded cylinder (202). The threaded rod (203) is threadedly connected to the threaded cylinder (202).

8. The stability monitoring device for the paper feed roller during rotation according to claim 1, characterized in that: The upper contact component (7) includes an upper movable frame (701) that is movably disposed on the fixed housing (5). One end of the upper movable frame (701) extends to the outside of the fixed housing (5) and a first arc-shaped rod (702) is mounted on the end. The downward arc surface of the first arc-shaped rod (702) is concave, and a plurality of first support blocks (703) are fixedly disposed on the arc surface. The plurality of first support blocks (703) are arranged in an equidistant array along the arc surface trajectory. Each first support block (703) is rotatably provided with a first roller (704) for contacting the end of the rotating shaft of the paper feeding roller.

9. The stability monitoring device for the paper feed roller during rotation according to claim 8, characterized in that: The lower contact component (8) includes a lower movable frame (801) located directly below the upper movable frame (701) and movably mounted on the fixed housing (5). One end of the lower movable frame (801) extends to the outside of the fixed housing (5) and a second arc-shaped rod (802) is mounted on the end. The upward arc surface of the second arc-shaped rod (802) is concave, and a plurality of second support blocks (803) are fixedly mounted on the arc surface. The plurality of second support blocks (803) are arranged in an equidistant array along the arc surface trajectory. Each second support block (803) is rotatably mounted with a second roller (804) for contacting the end of the rotating shaft of the paper feeding roller.

10. The stability monitoring device for the rotation of the paper feed roller according to claim 9, characterized in that: The adjustment assembly (6) includes several guide rods (601) installed in the fixed housing (5) and arranged vertically. The upper movable frame (701) and the lower movable frame (801) are slidably arranged on the guide rods (601). It also includes a support bearing (602) installed in the fixed housing (5). A positive and negative threaded rod (603) with a vertically arranged axis is rotatably arranged on the support bearing (602). The two ends of the positive and negative threaded rod (603) extend to the outer top and outer bottom of the fixed housing (5) respectively, and a screwing element (604) is installed on both ends of the positive and negative threaded rod (603). The upper movable frame (701) and the lower movable frame (801) are threadedly connected to different threaded portions of the positive and negative threaded rod (603).

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