Paper breaking prevention paper machine pressurization closing equipment
By installing proximity switches and proximity switch baffles on both sides of the fixed roller seat and the moving roller seat of the paper machine pressing closure equipment, the dynamic rollers are ensured to achieve a synchronous state before the combined rollers, which solves the problem of pressing paper-breaking on the combined rollers and reduces the paper-breaking rate.
Patent Information
- Application Number
- CN202422288605.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-19
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-09-19
AI Technical Summary
The existing paper machine press closure equipment in the paper making machine pressing and closing equipment at the moment of the roll closure due to the difference in the movement speed of the cylinder or oil cylinder on the operating side and the transmission side, resulting in the problem of pressing and breaking paper on the roll.
The proximity switch and proximity switch baffle are installed on both sides of the fixed roller seat and the movable roller seat respectively. The waiting position of the movable roller is sensed through these switches to ensure that the movable roller reaches a synchronous state before the movable roller is combined, and then a secondary pressurization operation is performed.
By setting the waiting position synchronously, the problem of pressing out of synchronization between the roller surface roller operation side and the transmission side is reduced, thereby reducing the paper breakage rate.
Smart Images
Figure CN223003223U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of paper machines, in particular to a paper machine pressurizing and closing device for preventing paper breakage. Background Art
[0002] In the prior art, in the operations of calendering machines, sizing machines, and coating machines for pressurizing or closing rolls, some use pneumatic control and some use hydraulic control. There is a cylinder or a hydraulic cylinder on each of the operation side and the drive side to be responsible for performing pressurization. Generally, the distance from the original state to the pressurized closing state is relatively long (10 cm or more). At this time, there will be a certain difference in the moving speeds of the cylinders or oil cylinders on both sides after the operation side and the drive side receive the pressurized closing command. When the rolls are closed, the contact time and pressure of the two roll surfaces on the operation side and the drive side are inconsistent, and the asynchronous closing of the rolls is likely to cause paper breakage during the pressurized closing. Therefore, a paper machine pressurizing and closing device for preventing paper breakage is proposed. Content of the Utility Model
[0003] The purpose of the utility model is to propose a paper machine pressurizing and closing device for preventing paper breakage to solve the above problems.
[0004] To achieve the above purpose, the utility model provides the following technical solution: A paper machine pressurizing and closing device for preventing paper breakage, including a frame, a fixed roll seat installed on the frame, a driver installed on both sides of the frame, and a moving roll seat installed on the driver; a fixed roll is movably installed on the fixed roll seat, and a moving roll is movably installed on the moving roll seat; it is characterized in that it further includes proximity switches installed on both sides of the fixed roll seat and proximity switch baffles installed on both sides of the moving roll seat corresponding to the proximity switches.
[0005] Further preferably, the induction positions of the proximity switches and the proximity switch baffles are the set waiting positions between the fixed roll and the moving roll, and the gap between the fixed roll and the moving roll at the waiting position is 1 - 2 cm.
[0006] Further preferably, the driver uses a cylinder or an oil cylinder.
[0007] The beneficial effects of the utility model: By installing proximity switches and proximity switch baffles on both sides of the fixed roll seat and the moving roll seat respectively, a waiting position is set for the moving roll before it moves upward to close the roll by the proximity switches and the proximity switch baffles. After it is determined that both sides of the moving roll are at the equal position before closing the roll, the roll is closed synchronously and a secondary pressurization operation is performed, reducing the problem of asynchronous pressurization on the operation side and the drive side of the roll surface caused by inconsistent running speeds, thereby reducing the paper breakage rate. Description of the Drawings
[0008] Attached Figure 1 is a schematic structural diagram of the utility model.
[0009] Legend: 1. Frame; 2. Driver; 3. Fixed roller seat; 4. Movable roller seat; 5. Fixed roller; 6. Movable roller; 7. Proximity switch; 8. Proximity switch baffle. Detailed implementation
[0010] Next, we will further explain a paper machine pressure closing device for preventing paper breakage according to the present utility model with reference to the accompanying drawings.
[0011] It should be noted that all directional indications such as up, down, left, right, front, back... in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a specific posture as shown in the accompanying drawings. If this specific posture changes, the directional indications will also change accordingly.
[0012] In the present utility model, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" should be understood in a broad sense; for example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0013] Refer to Figure 1 As shown in [reference], a paper machine pressure closing device for preventing paper breakage includes a frame 1, a fixed roller seat 3 installed on the frame 1, a driver 2 installed on both sides of the frame 1, and a movable roller seat 4 installed on the driver 2; a fixed roller 5 is movably installed on the fixed roller seat 3, and a movable roller 6 is movably installed on the movable roller seat 4; it is characterized in that it further includes proximity switches 7 installed on both sides of the fixed roller seat 3 and proximity switch baffles 8 installed on both sides of the movable roller seat 4 corresponding to the proximity switches 7;
[0014] The sensing positions of the proximity switches 7 and the proximity switch baffles 8 are the set waiting positions between the fixed roller 5 and the movable roller 6, and the gap between the fixed roller 5 and the movable roller 6 at the waiting position is 1 - 2 cm;
[0015] By installing proximity switches 7 and proximity switch baffles 8 on both sides of the fixed roller seat 3 and the movable roller seat 4 respectively, a waiting position is set for the movable roller 6 before it moves upward to close the rollers. After determining that both sides of the movable roller 6 are in the equal position before closing the rollers, the rollers are closed synchronously, and a secondary pressure application operation is performed to reduce the problem of asynchronous pressure application on the operation side and the drive side of the roller surface due to inconsistent running speeds, thereby reducing the paper breakage rate;
[0016] By setting the gap between the moving roller 6 and the fixed roller 5 at the waiting position to be 1 - 2 cm, when the moving roller 6 is driven to move synchronously by the drives 2 on both sides, the smaller the moving distance, the smaller the deviation generated, so as to ensure that the two sides of the moving roller 6 can achieve synchronous roller closing as much as possible and reduce the paper break rate as much as possible.
[0017] In one embodiment, the drive 2 is a cylinder or an oil cylinder.
[0018] When the present utility model is in use: This device is automatically controlled through the control system in the paper machine;
[0019] When roller closing, the drives 2 on both sides are started through the holes in the control system. The drive 2 pushes the moving roller seat 4 to drive the moving roller 6 to move. During the movement, if the proximity switch 7 on one side first senses the proximity switch baffle 8 and sends a signal to the control system, the control system controls the drive 2 on that side to stop moving until the proximity switch 7 on the other side also senses the proximity switch baffle 8, indicating that the moving roller 6 is at the waiting position at this time. Then the control system controls the drives 2 on both sides to start synchronously again, driving the moving roller 6 to perform secondary pressurization until roller closing.
[0020] The protection scope of the present utility model is not limited to the above embodiments and their variations. Routine modifications and replacements made by those skilled in the art based on the content of this embodiment all fall within the protection scope of the present utility model.
Claims
1. A paper-breaking prevention pressurized closing device for a papermaking machine, comprising a frame (1), a fixed roller seat (3) mounted on the frame (1), a driver (2) mounted on both sides of the frame (1), and a movable roller seat (4) mounted on the driver (2); a fixed roller (5) is movably mounted on the fixed roller seat (3), and a movable roller (6) is movably mounted on the movable roller seat (4); wherein: It also includes proximity switches (7) installed on both sides of the fixed roller seat (3) and proximity switch baffles (8) installed on both sides of the movable roller seat (4) and corresponding to the proximity switches (7).
2. A paper machine pressurized closing device for preventing paper breakage according to claim 1, characterized in that: The sensing position of the proximity switch (7) and the proximity switch baffle (8) is a waiting position set between the fixed roller (5) and the movable roller (6), and the gap between the fixed roller (5) and the movable roller (6) at the waiting position is 1 to 2 cm.
3. The paper machine pressurized closing device for preventing paper breakage according to claim 1, characterized in that: The driver (2) is a pneumatic cylinder or an oil cylinder.