Deviation adjusting device for paper processing and feeding

Abstract

The utility model discloses a paper processing feeding deviation adjusting device which comprises a machine frame, fixing bases are fixed to the two sides of the machine frame through screws, a detection structure for judging the edge position of paper is installed on one side of each fixing base, and a lifting block and an adjusting structure for adjusting the position of the lifting block are arranged in each fixing base. A fixing frame is fixed to one side of the lifting block through screws. By arranging the clamping plates and the horizontal electric sliding table, the mode that lateral pulling force is directly applied to the edge of paper replaces traditional deviation rectifying roller angle adjustment, a clamping plate driving structure adopts the combination of a bidirectional lead screw and a rotating motor, bidirectional synchronous movement of the clamping plates can be achieved, the paper clamping and releasing process is short, and compared with a traditional deviation rectifying roller, the paper clamping and releasing efficiency is improved. Lagging caused by inertia can be avoided, and excessive deviation correction is avoided. The horizontal electric sliding table is adopted as a clamping plate moving carrier, the transverse stroke range of the clamping plate can be flexibly controlled, and the deviation rectifying requirements of paper of different widths are met.

Description

Technical Field

[0001] This utility model relates to the field of paper processing technology, specifically to a paper feeding and alignment device. Background Technology

[0002] Paper feeding and alignment mechanisms are commonly used equipment components in industries such as printing, packaging, and papermaking. They are mainly used to automatically detect and correct misalignment during the paper or roll material conveying process, ensuring accurate material alignment.

[0003] Paper feeding and alignment mechanisms typically use photoelectric sensors to detect changes in the light transmittance of the material edge to determine its position. The controller receives the sensor signals, calculates the deviation, and outputs control commands. Alignment is achieved through pneumatic or electric means. Currently, commonly used alignment mechanisms include oscillating roller alignment, bogie alignment, and floating roller alignment.

[0004] A search revealed a thermal paper unwinding device disclosed in patent application publication number CN220449202U. The device includes a fixed frame with an unwinding mechanism installed inside. A support arm is mounted on one side of the fixed frame, and two guide rollers are mounted in the middle of the support arm. A correction mechanism is fixedly mounted at the front end of the support arm, and a control panel is fixedly mounted on the outer wall of the fixed frame. Through the correction mechanism, thermal paper is fed from the correction roller through the guide rollers. When the thermal paper deviates on the correction roller, photoelectric sensors located on both sides of the top of the correction roller detect the direction of the deviation. At this time, an electric push rod pushes or retracts, causing a slider on the first slide to move on a slide rail. The slider's movement causes the correction roller to adjust its angle. The deviation of the correction roller causes a slider mounted at the other end to move on a second slide, resulting in a reverse deviation between the correction roller and the thermal paper.

[0005] The paper alignment structure in this device uses an angled electric actuator to adjust the angle of the alignment roller, thereby changing the material path. However, due to the large physical mass of the alignment roller, its inertia is significant during high-speed adjustments, causing the alignment action to lag behind the detection signal, resulting in over-alignment and requiring frequent corrections. Utility Model Content

[0006] The purpose of this utility model is to provide a paper feeding and alignment device. By setting clamps that can be pulled left and right on both sides of the unfolded paper, the contact surface between the ball bearing body at the bottom of the clamp and the paper is wrapped with rubber. When the two clamps are close to each other, the two sets of ball bearing bodies are close to each other and pull one side of the paper. After being pulled, the paper is released by the clamps moving away from each other. This can shorten the time when the alignment action caused by inertia lags behind the detection signal.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a paper feeding and alignment device, comprising a frame, with fixed seats fixed to both sides of the frame by screws, a detection structure for judging the position of the paper edge installed on one side of the fixed seat, a lifting block and an adjustment structure for adjusting the position of the lifting block provided inside the fixed seat, a fixed frame fixed to one side of the lifting block by screws, a horizontal electric slide table installed on one side of the fixed frame by screws, and an alignment correction structure for changing the force on the paper installed on the slide table of the horizontal electric slide table;

[0008] The correction structure includes a clamping plate and a drive block. The drive block is fixedly connected to the slide of a horizontal electric slide table. A rotating rod is fixed in the inner cavity of the clamping plate. A ball bearing body is rotatably connected to the outer wall of the rotating rod. A drive structure for moving the clamping plate is provided inside the drive block.

[0009] Preferably, the drive structure includes a rotary motor and a bidirectional lead screw. The rotary motor is fixed inside the drive block. One end of the bidirectional lead screw is fixedly connected to the rotary motor. The bidirectional lead screw is rotatably connected to the drive block. A clearance groove for a clamping plate to pass through is provided on one side of the drive block. One end of the clamping plate is slidably connected inside the drive block. The bidirectional lead screw passes through the clamping plate and is threadedly connected to the clamping plate.

[0010] Preferably, there are two clamping plates, and each clamping plate has a plurality of ball bearings on one side, and the plurality of ball bearings are arranged in a linear arrangement.

[0011] The contact surface between the ball bearing body and the paper is covered with a rubber layer.

[0012] Preferably, the detection structure includes a photoelectric sensor, and a mounting plate is fixed to one side of the fixing base by screws, and the photoelectric sensor is fixed to one end of the mounting plate by screws.

[0013] Preferably, the photoelectric sensor is a through-beam red light detector OMRON E3Z-T61 model, and one end of the mounting plate has a rectangular slot to facilitate the photoelectric sensor to pass through.

[0014] Preferably, the adjusting structure includes a screw, a groove is provided in the middle of the fixed seat, the lifting block is slidably connected in the groove, the screw is rotatably connected in the fixed seat, the screw passes through the lifting block and is threadedly connected to the lifting block, and an adjusting handle is fixed at the top of the screw.

[0015] Preferably, the frame includes a base, and a first transmission roller and a second transmission roller are rotatably connected within the base, and the fixed frame is arranged in an L-shape.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This utility model replaces the traditional straightening roller angle adjustment by setting up a clamping plate and a horizontal electric slide to directly apply lateral tension to the edge of the paper. The clamping plate drive structure adopts a combination of a two-way lead screw and a rotary motor, which can realize bidirectional synchronous movement of the clamping plate. The paper clamping and releasing process is short. Compared with the traditional straightening roller, it can avoid lag caused by inertia and avoid over-correction.

[0018] 2. A horizontal electric slide table is used as the moving carrier for the clamping plate, which allows for flexible control of the lateral travel range of the clamping plate to adapt to the correction requirements of different paper widths. The cooperation between the lifting block and the screw adjustment structure allows for height adjustment of the entire correction structure to meet the processing scenarios of paper with different thicknesses or tension levels. Attached Figure Description

[0019] Figure 1 This is an isometric drawing of this utility model;

[0020] Figure 2 This is a schematic diagram of the correction structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the detection structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the internal structure of the drive block of this utility model;

[0023] Figure 5 This is a schematic diagram of the internal rotating rod of the clamping plate of this utility model.

[0024] In the diagram: 1. Frame; 2. Fixed base; 3. Detection structure; 4. Adjustment structure; 5. Fixed frame; 6. Horizontal electric slide; 7. Correction structure; 701. Clamping plate; 702. Drive block; 703. Rotating rod; 704. Ball bearing body; 8. Drive structure; 9. Lifting block; 801. Rotary motor; 802. Bidirectional lead screw; 803. Clearance groove; 301. Photoelectric sensor; 302. Mounting plate; 303. Rectangular groove; 401. Screw; 402. Slide groove; 403. Adjustment handle; 101. Base; 102. First transmission roller; 103. Second transmission roller. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-5This utility model provides a technical solution: a paper feeding and alignment device, including a frame 1, with fixed seats 2 fixed to both sides of the frame 1 by screws, a detection structure 3 for judging the position of the paper edge installed on one side of the fixed seat 2, a lifting block 9 and an adjustment structure 4 for adjusting the position of the lifting block 9 provided in the fixed seat 2, a fixed frame 5 fixed to one side of the lifting block 9 by screws, a horizontal electric slide 6 installed on one side of the fixed frame 5 by screws, and an alignment correction structure 7 for changing the force on the paper installed on the slide of the horizontal electric slide 6;

[0027] The correction structure 7 includes a clamping plate 701 and a driving block 702. The driving block 702 is fixedly connected to the slide of the horizontal electric slide table 6. A rotating rod 703 is fixed in the inner cavity of the clamping plate 701. A ball bearing body 704 is rotatably connected to the outer wall of the rotating rod 703. A driving structure 8 for driving the clamping plate 701 to move is provided inside the driving block 702.

[0028] The paper edge position is monitored in real time by the detection structure 3 on the fixed seats 2 on both sides of the frame 1. When a deviation is detected, the signal is transmitted to the control system. The adjustment structure 4 drives the lifting block 9 to adjust the height, which in turn drives the horizontal electric slide 6 and the correction structure 7 to rise and fall as a whole to accommodate papers of different thicknesses. The horizontal electric slide 6 provides lateral movement capability, allowing the correction structure 7 to be positioned laterally. The correction structure 7 applies lateral force to the paper through the cooperation of the clamping plate 701 and the ball body 704 to achieve correction, as detailed below:

[0029] The drive structure 8 includes a rotary motor 801 and a bidirectional lead screw 802. The rotary motor 801 is fixed inside the drive block 702. One end of the bidirectional lead screw 802 is fixedly connected to the rotary motor 801. The bidirectional lead screw 802 is rotatably connected to the drive block 702. A clearance groove 803 is provided on one side of the drive block 702 for the clamping plate 701 to pass through. One end of the clamping plate 701 is slidably connected inside the drive block 702. The bidirectional lead screw 802 passes through the clamping plate 701 and is threadedly connected to the clamping plate 701.

[0030] The rotating motor 801 drives the bidirectional lead screw 802 to rotate. Since the threads on both sides of the bidirectional lead screw 802 are in opposite directions, the two clamping plates 701 can move closer or further apart synchronously, thereby clamping or releasing the paper. The clearance groove 803 provides space for the movement of the clamping plates 701, ensuring smooth operation.

[0031] Two clamping plates 701 are provided, and each clamping plate 701 has a plurality of ball bodies 704 on one side, and the plurality of ball bodies 704 are arranged in a linear arrangement.

[0032] The contact surface between the ball bearing body 704 and the paper is covered with a rubber layer.

[0033] When the ball bearing body 704 on the rotating rod 703 comes into contact with the paper, it rolls and rubs, reducing paper scratches; the rubber layer further increases lateral friction and protects the paper surface.

[0034] The detection structure 3 includes a photoelectric sensor 301. A mounting plate 302 is fixed to one side of the fixing base 2 by screws, and the photoelectric sensor 301 is fixed to one end of the mounting plate 302 by screws.

[0035] The photoelectric sensor 301 is a through-beam red light detector model OMRON E3Z-T61, and a rectangular slot 303 is provided at one end of the mounting plate 302 to facilitate the passage of the photoelectric sensor 301.

[0036] The 301OMRON E3Z-T61 photoelectric sensor employs a through-beam red light detection principle, with the transmitter and receiver positioned on opposite sides of the paper. When the paper shifts, the partial obstruction of the red light causes a change in the receiver signal. The shift is precisely calculated using the signal strength difference, and the data is fed back to the control system to trigger a correction action. The rectangular slot 303 design facilitates fine-tuning of the sensor's installation position.

[0037] The adjustment structure 4 includes a screw 401, a groove 402 is provided in the middle of the fixed base 2, the lifting block 9 is slidably connected in the groove 402, the screw 401 is rotatably connected in the fixed base 2, the screw 401 passes through the lifting block 9 and is threadedly connected to the lifting block 9, and an adjustment handle 403 is fixed at the top of the screw 401.

[0038] Rotating the adjusting handle 403 drives the screw 401 to rotate. The screw 401, in thread engagement with the lifting block 9, converts the rotational motion into vertical movement of the lifting block 9, thereby adjusting the height of the correction structure 7. The slide groove 402 restricts the lifting block 9 to slide only in the vertical direction, ensuring lifting stability and adapting to different paper thicknesses or process requirements.

[0039] The frame 1 includes a base 101, in which a first transmission roller 102 and a second transmission roller 103 are rotatably connected. The fixed frame 5 is arranged in an L-shape.

[0040] In use, the first drive roller 102 and the second drive roller 103 form the paper conveying path. The photoelectric sensor 301 is located between the first drive roller 102 and the second drive roller 103 to monitor the edge position of the paper in real time. When the paper deviates, the red light is partially blocked, causing the signal at the receiving end to change. The offset is accurately calculated by the signal strength difference, and the data is fed back to the control system to trigger the correction action: the horizontal electric slide 6 moves the correction structure 7 laterally to the target area, and the rotating motor 801 drives the bidirectional lead screw 802 to rotate. Since the threads on both sides of the bidirectional lead screw 802 are opposite, the two clamping plates 701 can move closer to each other synchronously to clamp the paper. The horizontal electric slide 6 drives the drive block 702 to move away from the paper to the side away from the paper, applying lateral force to the paper to perform correction.

[0041] Compared to traditional straightening roller angle adjustment, this device can avoid lag caused by inertia and prevent over-correction.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A paper feeding and alignment device, characterized in that: The machine includes a frame (1), with fixed seats (2) fixed on both sides of the frame (1) by screws. A detection structure (3) for judging the position of the paper edge is installed on one side of the fixed seat (2). A lifting block (9) and an adjustment structure (4) for adjusting the position of the lifting block (9) are provided inside the fixed seat (2). A fixed frame (5) is fixed on one side of the lifting block (9) by screws. A horizontal electric slide (6) is installed on one side of the fixed frame (5) by screws. A correction structure (7) for changing the force on the paper is installed on the slide of the horizontal electric slide (6). The correction structure (7) includes a clamping plate (701) and a drive block (702). The drive block (702) is fixedly connected to the slide of the horizontal electric slide (6). A rotating rod (703) is fixed in the inner cavity of the clamping plate (701). A ball body (704) is rotatably connected to the outer wall of the rotating rod (703). A drive structure (8) for moving the clamping plate (701) is provided inside the drive block (702).

2. The paper processing feeding and alignment device according to claim 1, characterized in that: The drive structure (8) includes a rotary motor (801) and a bidirectional lead screw (802). The rotary motor (801) is fixed inside the drive block (702). One end of the bidirectional lead screw (802) is fixedly connected to the rotary motor (801). The bidirectional lead screw (802) is rotatably connected to the drive block (702). A clearance groove (803) is provided on one side of the drive block (702) for the clamping plate (701) to pass through. One end of the clamping plate (701) is slidably connected inside the drive block (702). The bidirectional lead screw (802) passes through the clamping plate (701) and is threadedly connected to the clamping plate (701).

3. The paper processing feeding and alignment device according to claim 2, characterized in that: Two clamping plates (701) are provided, and a plurality of ball bodies (704) are provided on one side of each clamping plate (701), and the plurality of ball bodies (704) are arranged in a linear arrangement; The contact surface between the ball bearing body (704) and the paper is covered with a rubber layer.

4. The paper processing feeding and alignment device according to claim 3, characterized in that: The detection structure (3) includes a photoelectric sensor (301), and a mounting plate (302) is fixed to one side of the fixing base (2) by screws. The photoelectric sensor (301) is fixed to one end of the mounting plate (302) by screws.

5. The paper processing feeding and alignment device according to claim 4, characterized in that: The photoelectric sensor (301) is a through-beam red light detector OMRON E3Z-T61 model, and a rectangular slot (303) is provided at one end of the mounting plate (302) to facilitate the photoelectric sensor (301) to pass through.

6. The paper processing feeding and alignment device according to claim 5, characterized in that: The adjustment structure (4) includes a screw (401), a groove (402) is provided in the middle of the fixed seat (2), the lifting block (9) is slidably connected in the groove (402), the screw (401) is rotatably connected in the fixed seat (2), the screw (401) passes through the lifting block (9) and is threadedly connected to the lifting block (9), and an adjustment handle (403) is fixed at the top of the screw (401).

7. The paper processing feeding and alignment device according to claim 1, characterized in that: The frame (1) includes a base (101), in which a first transmission roller (102) and a second transmission roller (103) are rotatably connected, and the fixed frame (5) is arranged in an L-shape.

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