Adjusting structure of electric paper pulling wheel

Abstract

The utility model discloses an adjusting structure of an electric paper pulling wheel, which comprises a fixed bracket, a servo motor for providing driving force for the movement of the paper pulling wheel is arranged on the inner side of the fixed bracket through angle steel, and a paper pulling wheel main body for pulling paper is arranged at the vertical bottom end of the angle steel in a sliding manner; the driving lead screw rotates, so that the threaded driving sleeve drives the driving shifting block through the connecting rod to drive the paper pulling wheel body to move left and right through the connecting sliding block with the strip-shaped guide rail and the guide shaft as the guide, the paper pulling wheel body slides on the guide shaft at a constant speed, and the paper pulling wheel body pulls conveyed paper to move left and right at a constant speed; according to the paper pulling wheel, the position of the paper is adjusted by adjusting the position of the paper, in the process that the paper pulling wheel body pulls the paper, the phenomenon that the paper is snapped and wrinkled is avoided, the stability of left-right movement of the paper pulling wheel body is guaranteed, and therefore the existing technical problems in the background technology are solved.

Description

Technical Field

[0001] This utility model belongs to the field of paper production technology, and specifically relates to an adjustment structure for an electric paper pulling roller. Background Technology

[0002] In a web offset printing machine, the paper pull roller is mechanically adjusted for engagement and disengagement. A screw is mounted on a bracket, with one end connected to a handle and the other end connected to a stop, a support foot, a spring, and a nut. The spring is fitted onto the screw, pressing one end against the support foot and the other end against the nut. Adjusting the nut adjusts the pressure of the support foot. One paper pull roller is housed within the support foot, while another is fixed to a fixed frame. Adjusting the distance and pressure between the paper pull roller in the support foot and the fixed roller adjusts the clamping force on the paper drawn from the guide roller. The adjustment process involves rotating the handle to extend or retract the adjusting screw, causing the support foot to swing along a screw at the bottom of the support foot. This moves the movable paper pull roller closer to or away from the fixed paper pull roller, thus adjusting the paper clamping force. This paper pull roller screw adjustment mechanism is relatively inconvenient to operate, as the clamping force is manually adjusted, which can easily introduce errors in accuracy.

[0003] Therefore, a pneumatic adjustment device for a paper-pulling roller, with announcement number "CN2843836Y", includes a cylinder, a piston rod, a pneumatic control mechanism, a connecting block, and a support foot. The support foot is a cam with a central shaft hole, and the paper-pulling roller is installed in the shaft hole. The piston rod is connected to the middle of the support foot via the connecting block. The upper part of the support foot is fastened to a fixed frame with screws and can swing around the screws. The pneumatic control mechanism includes a solenoid valve, a throttle valve, a control switch, and a pressure gauge. The air path is connected to the solenoid valve via the control switch. The solenoid valve outputs two paths: one path connects to the cylinder, and the other path connects in series with the throttle valve and the pressure gauge before connecting to the other end of the cylinder. It is easy to operate, provides intuitive adjustment of the clamping force, and offers high control precision.

[0004] However, although the above-mentioned pneumatic adjustment device for the paper pull roller uses a pneumatic adjustment device to replace the existing screw adjustment mechanism to control the paper pull roller, and controls the clamping force between the paper pull rollers by adjusting the gas flow in the air path, the following obvious defects still exist in the use process: the above-mentioned adjustment of the paper pull roller by starting it up will cause the paper pull roller to move to the position that needs to be slid and adjusted instantly. This instantaneous movement of the paper pull roller can easily cause an instantaneous inertial impact and stretching of the paper, which will lead to the paper being torn and wrinkled. Utility Model Content

[0005] The purpose of this invention is to provide an adjustment structure for an electric paper-pulling wheel to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an adjustment structure for an electric paper-pulling wheel, comprising:

[0007] A fixed bracket is provided with a servo motor that provides driving force for the movement of the paper-pulling wheel via an angle steel on the inner side of the fixed bracket. The vertical bottom end of the angle steel is slidably provided with the paper-pulling wheel body that pulls the paper. The lower end face of the angle steel is rotatably provided with a drive screw that drives the paper-pulling wheel body to slide via a bearing seat. The drive screw is slidably provided with a drive block that is connected to the paper-pulling wheel body for driving the slide. The front side of the drive screw is provided with a strip guide rail that linearly guides the movement of the drive block.

[0008] Preferably, the drive screw is provided with a synchronous wheel A, and the servo motor shaft is provided with a synchronous wheel B. The synchronous wheel A and the synchronous wheel B are connected by a belt to drive the drive screw to rotate and generate driving force.

[0009] Preferably, the drive block is connected to one end of the surface of the paper puller body, the drive block is provided with a connecting rod, and the other end of the connecting rod is connected to a threaded drive sleeve, and the threaded drive sleeve is sleeved on the drive screw, so that the drive screw drives the threaded drive sleeve to slide, thereby realizing the movement of the paper puller body.

[0010] Preferably, a connecting slider is slidably provided on the strip guide rail, and the bottom end of the connecting slider is connected to the threaded drive sleeve through a screw to drive the paper pull wheel body to slide, thereby realizing the left and right movement of the paper pull wheel body.

[0011] Preferably, one end of the paper-pulling wheel body is provided with an annular groove, and the driving block is either inserted from the upper end of the paper-pulling wheel body into the inner side of the upper end of the annular groove, so that the paper-pulling wheel body can rotate during movement.

[0012] Preferably, the servo motor has an L-shaped mounting plate fixed to one side of the rotating shaft, and the mounting plate is fixed to the end of the angle steel. The bottom inner side of the fixed bracket is provided with a guide shaft, and the paper pull wheel body is slidably mounted on the guide shaft to ensure the stability of the servo motor and the stable sliding and rotation of the paper pull wheel body.

[0013] Compared with the prior art, the technical effects and advantages of this utility model are as follows: The adjustment structure of the electric paper puller is driven by a servo motor to rotate synchronous wheel B. Synchronous wheel B drives synchronous wheel A to rotate via a belt. Synchronous wheel A drives the drive screw to rotate. The rotation of the drive screw causes the threaded drive sleeve to move left and right by means of a connecting rod, which in turn drives the drive block through the connecting slider and guided by the strip guide rail and guide shaft. This allows the paper puller body to slide at a uniform speed on the guide shaft, thus enabling the paper puller body to pull the conveyed paper left and right at a uniform speed, thereby adjusting the position of the paper. Furthermore, the paper puller body will not break or wrinkle the paper during the process of pulling the paper, ensuring the stability of the left and right movement of the paper puller body. This solves the problems of the prior art in the background. At the same time, the paper puller body can be adjusted without separating the machine during actual use, which greatly shortens the replacement time and effectively improves the working speed. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main cross-sectional structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the main structure of this utility model.

[0016] In the diagram: 1. Fixed bracket; 2. Angle steel; 3. Servo motor; 4. Paper puller body; 5. Drive screw; 6. Drive lever; 7. Strip guide rail; 8. Synchronous pulley A; 9. Synchronous pulley B; 10. Connecting rod; 11. Threaded drive sleeve; 12. Connecting slider; 13. Annular groove; 14. Mounting plate; 15. Guide shaft. Detailed Implementation

[0017] 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.

[0018] Please see Figure 1-2 This utility model provides a technical solution: an adjustment structure for an electric paper-pulling roller, comprising:

[0019] A fixed bracket 1 is provided with a servo motor 3 inside the bracket 1 via an angle steel 2, which drives the paper-pulling rollers to rotate. Two servo motors 3 are symmetrically arranged at the ends of the angle steel 2, and their rotation speed can be adjusted to ensure the paper-pulling roller body 4 moves at a uniform speed. A paper-pulling roller body 4 is slidably mounted on the vertical bottom end of the angle steel 2 to pull the paper, thus pulling the output paper. Two paper-pulling roller bodies 4 are symmetrically arranged on the guide shaft 15, allowing multiple paper-pulling roller bodies 4 to move synchronously and independently. The lower end face of the angle steel 2 is rotatably mounted with a drive screw 5 that drives the paper-pulling wheel body 4 to slide through a bearing seat. The threaded drive sleeve 11 and the connecting slider 12 move synchronously. The drive screw 5 is slidably mounted with a drive block 6 connected to the paper-pulling wheel body 4 to drive it to slide. The drive block 6 uses the sliding of the threaded drive sleeve 11 to drive the paper-pulling wheel body 4 to slide at a constant speed on the guide shaft 15. The front side of the drive screw 5 is provided with a strip guide rail 7 that linearly guides the movement of the drive block 6, which can keep the threaded drive sleeve 11 moving stably left and right on the drive screw 5.

[0020] The drive screw 5 is equipped with a synchronous wheel A8, and the servo motor 3 shaft is equipped with a synchronous wheel B9. The synchronous wheel B9 can drive the synchronous wheel A8 to rotate via a belt, and the synchronous wheel A8 and the synchronous wheel B9 are connected by a belt to drive the drive screw 5 to rotate. The drive block 6 is connected to one end of the surface of the paper puller body 4 and is movably engaged with one end of the paper puller body 4 so as not to affect the rotation of the paper puller body 4. The drive block 6 is equipped with a connecting rod 10, and the other end of the connecting rod 10 is connected to a threaded drive sleeve 11, which drives the drive block 6 to move left and right on the guide shaft 15. The threaded drive sleeve 11 is sleeved on the drive screw 5. The strip guide rail 7 is slidably equipped with a connecting slider 12, which can guide the threaded drive sleeve 11 during movement. The bottom end of the connecting slider 12 is connected to the threaded drive sleeve 11 by a screw to drive the paper puller body 4 to slide.

[0021] The paper-pulling roller body 4 has an annular groove 13 at one end, allowing the drive block 6 to move left and right without affecting the rotation of the paper-pulling roller body 4. The drive block 6 can move from the upper end of the paper-pulling roller body 4 or be inserted into the inner side of the upper end of the annular groove 13, enabling the paper-pulling roller body 4 to move at a uniform speed. The servo motor 3 has an L-shaped mounting plate 14 fixed on one side with a rotating shaft, which keeps the servo motor 3 stable during operation. The mounting plate 14 is fixed to the end of the angle steel 2. The bottom inner side of the fixed bracket 1 is rotatably provided with a guide shaft 15, which allows the paper-pulling roller body 4 to move left and right. The paper-pulling roller body 4 is slidably mounted on the guide shaft 15, and the two ends of the guide shaft 15 are rotatably fixed to the bottom inner side of the fixed bracket 1 through a rotating shaft.

[0022] Specifically, in use, the servo motor 3 is first started, which drives the synchronous wheel B9 to rotate via the rotating shaft. The synchronous wheel B9 rotates via the belt synchronous wheel A8. The rotation of the synchronous wheel A8 causes the drive screw 5 to rotate. The rotation of the drive screw 5 causes the threaded drive sleeve 11 to slide left and right on the guide shaft 15. At the same time as the threaded drive sleeve 11 slides, the connecting slider 12 slides synchronously on the strip guide rail 7, so that the threaded drive sleeve 11 can maintain a horizontal and uniform left and right movement. In the state of uniform movement of the threaded drive sleeve 11, the connecting rod 10 moves further and drives the drive lever 6 to move. The movement of the drive lever 6 causes the paper puller body 4 to move uniformly on the guide shaft 15 for adjustment. Therefore, the paper puller body 4 can be pulled left and right at a uniform speed without the need for manual adjustment by the operator, so as to adjust the position of the paper and prevent the paper from breaking or wrinkling during the process of the paper puller body 4 pulling the paper, thus ensuring the stability of the left and right movement of the paper puller body 4.

[0023] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An adjustment structure for an electric paper-pulling roller, characterized in that, include: A fixed bracket (1) is provided with a servo motor (3) that provides driving force for the movement of the paper-pulling wheel through an angle steel (2) on the inner side of the fixed bracket (1). The vertical bottom end of the angle steel (2) is slidably provided with a paper-pulling wheel body (4) for pulling the paper. The lower end face of the angle steel (2) is rotatably provided with a drive screw (5) that drives the paper-pulling wheel body (4) to slide through a bearing seat. The drive screw (5) is slidably provided with a drive lever (6) that is connected to the paper-pulling wheel body (4) for driving the paper to slide. The front side of the drive screw (5) is provided with a strip guide rail (7) that linearly guides the movement of the drive lever (6).

2. The adjustment structure for an electric paper-pulling roller according to claim 1, characterized in that: The drive screw (5) is provided with a synchronous wheel A (8), and the servo motor (3) shaft is provided with a synchronous wheel B (9), and the synchronous wheel A (8) and the synchronous wheel B (9) are connected and driven by a belt.

3. The adjustment structure for an electric paper-pulling roller according to claim 1, characterized in that: The drive block (6) is connected to one end of the surface of the paper puller body (4). The drive block (6) is provided with a connecting rod (10), and the other end of the connecting rod (10) is connected to a threaded drive sleeve (11), which is sleeved on the drive screw (5).

4. The adjustment structure for an electric paper-pulling roller according to claim 1, characterized in that: The strip guide rail (7) is provided with a connecting slider (12), and the bottom end of the connecting slider (12) is connected to the threaded drive sleeve (11) by a screw to drive the paper puller body (4) to slide.

5. The adjustment structure for an electric paper-pulling roller according to claim 1, characterized in that: The paper-pulling wheel body (4) has an annular groove (13) at one end, and the driving block (6) is either inserted into the upper end of the annular groove (13) from the upper end of the paper-pulling wheel body (4).

6. The adjustment structure for an electric paper-pulling roller according to claim 1, characterized in that: The servo motor (3) has an L-shaped mounting plate (14) fixed on one side of the rotating shaft, and the mounting plate (14) is fixed to the end of the angle steel (2). The bottom inner side of the fixed bracket (1) is provided with a guide shaft (15), and the paper puller body (4) is slidably mounted on the guide shaft (15).

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