Press roller supporting structure of calender

By designing the press roller support structure, the movement of the upper press roller is amplified by the lever principle, and the motor is powered off through buttons, the problem of dry grinding of the press roller when the paper is broken is solved, and the effective protection of the press roller is achieved.

CN222594467UActive Publication Date: 2025-03-11沐川禾丰纸业有限责任公司
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Patent Information

Application Number
CN202420810153.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-18
Publication Date
2025-03-11
Estimated Expiration
2034-04-18

AI Technical Summary

Technical Problem

When the paper is broken, the upper and lower pressing rollers will rub against each other, causing dry grinding, which will easily cause damage to the pressing rollers.

Method used

A press roller support structure is designed to amplify the tiny movement of the upper press roller through the lever principle, and to achieve timely power off of the first motor by pressing the button, so as to stop the lower press roller from rotating, thereby avoiding dry grinding of the upper and lower press rollers.

Benefits of technology

It effectively avoids dry grinding of upper and lower pressing rollers when the paper breaks, and protects the service life of the pressing rollers.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a press roller supporting structure of a calender, and aims to solve the technical problem that two press rollers are damaged due to dry grinding caused by paper breakage. The structure comprises a lower pressing roller which is rotatably arranged in the calender in the horizontal direction and is in power connection with an output shaft of a first motor; the upper compression roller is positioned above the lower compression roller and is parallel to the lower compression roller; one end of the supporting rod is rotationally arranged at the end of the upper pressing roller, and a first fulcrum is arranged at the position, close to the upper pressing roller, of the supporting rod; one end of the driving rod is hinged with one end of the supporting rod away from the upper pressing roller; one end of the connecting rod is hinged to the end, away from the supporting rod, of the driving rod, and a second fulcrum is arranged at the position, close to the driving rod, of the connecting rod; the button is located below the end, away from the driving rod, of the connecting rod and electrically connected with the first motor. The structure has the advantage that when paper is broken, the two rollers stop rotating in time, so that dry grinding is avoided.
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Description

Technical Field

[0001] The utility model relates to the technical field of papermaking, in particular to a pressure roller supporting structure of a calender. Background Art

[0002] During the papermaking process, the calender presses the paper surface to make it smooth. The traditional calender presses the upper and lower rollers together and is driven by a coupling. When pressure is applied to one of the rollers, the paper is pressed smooth as it passes through the upper and lower rollers.

[0003] However, there is a problem with the current calenders. If the paper breaks during the extrusion process, the two rollers will rub against each other, resulting in dry grinding, which can easily cause damage to the rollers. Utility Model Content

[0004] In view of the technical problem in the prior art that paper breakage causes dry grinding of two pressure rollers, resulting in damage to the pressure rollers, the utility model provides a pressure roller support structure for a calender, which has the advantage of stopping the rotation of the two rollers in time when paper breakage occurs, thereby avoiding dry grinding.

[0005] The technical solution of the utility model is:

[0006] A roller support structure of a calender, comprising:

[0007] A lower pressure roller is arranged in the calender and rotates in a horizontal direction, and the lower pressure roller is connected to the output shaft of a first motor;

[0008] An upper pressing roller, located above the lower pressing roller and arranged parallel to the lower pressing roller;

[0009] A support rod, one end of which is rotatably disposed at the end of the upper pressing roller, and a first fulcrum is disposed at a position of the support rod close to the upper pressing roller;

[0010] A driving rod, one end of which is hinged to an end of the supporting rod away from the upper pressure roller;

[0011] A connecting rod, located above the driving rod, one end of which is hinged to an end of the driving rod away from the supporting rod, and a second fulcrum is provided at a position of the connecting rod close to the driving rod;

[0012] A button is located below the end of the connecting rod away from the driving rod, and the button is electrically connected to the first motor.

[0013] Optionally, a spring is provided below one end of the support rod away from the upper pressure roller, and the bottom end of the spring is fixed in the calender.

[0014] Optionally, two support rods are symmetrically provided at both ends of the upper pressure roller, and a spring is respectively provided below one end of the two support rods away from the upper pressure roller.

[0015] Optionally, a pressure rod is provided below one end of the connecting rod away from the driving rod, and the end of the pressure rod is close to the top of the button.

[0016] Optionally, the ratio of the power arm to the resistance arm on the support rod is 1:5-1:7, and the ratio of the power arm to the resistance arm on the connecting rod is 1:7-1:10.

[0017] Optionally, the travel of the connecting rod away from the end of the driving rod to touch the button is less than 30 times the distance between the upper pressing roller and the lower pressing roller.

[0018] Optionally, a cam is provided at one end of the support rod away from the upper pressure roller, and the cam can be pressed on the end of the support rod to drive the support rod to rotate.

[0019] Optionally, a pressure-bearing rod is provided on one end of the support rod away from the upper pressure roller, and the cam can be in contact with the pressure-bearing rod.

[0020] Optionally, the distance between the cam shaft and the pressure rod is less than 5 times the distance between the upper pressure roller and the lower pressure roller.

[0021] Optionally, the output shaft of the first motor is dynamically connected to the lower pressure roller.

[0022] Compared with the prior art, the beneficial effects of the utility model are:

[0023] The lower pressing roller is driven to rotate by the first motor, and when there is paper between the upper pressing roller and the lower pressing roller, the upper pressing roller rotates together with the lower pressing roller. When the paper between the upper pressing roller and the lower pressing roller suddenly breaks, the upper pressing roller moves toward the lower pressing roller and drives the support rod to rotate, so that one end of the support rod away from the upper pressing roller tilts up, so that the driving rod drives the connecting rod to rotate, and then the other end of the connecting rod presses a button, and the power supply of the first motor is controlled by the button, so that the first motor stops rotating.

[0024] Through this technical solution, the tiny movement of the upper pressure roller is amplified by the lever principle, and the first motor is powered off in time by pressing a button, so that the lower pressure roller stops rotating, thereby avoiding dry grinding of the upper pressure roller and the lower pressure roller, thereby protecting the upper pressure roller and the lower pressure roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a three-dimensional structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0027] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0031] Example:

[0032] See also Figure 1 A roller support structure of a calender includes a lower roller 1, a first motor, an upper roller 3, a support rod 4, a driving rod 5, a connecting rod 6 and a button 7. Specifically, the lower roller 1 is arranged inside the calender in a horizontal direction, and one end of the lower roller 1 is rotatably connected inside the calender, and the other end of the lower roller 1 is connected to the output shaft of the first motor, and the lower roller 1 is driven to rotate by the first motor.

[0033] The upper pressing roller 3 is also located in the calender. The upper pressing roller 3 is located above the lower pressing roller 1 . The upper pressing roller 3 and the lower pressing roller 1 are arranged parallel to each other, and there is a gap between the upper pressing roller 3 and the lower pressing roller 1 .

[0034] The upper pressing roller 3 is rotatably arranged on one end of the support rod 4, and a first fulcrum is arranged at a position of the support rod 4 close to the upper pressing roller 3, so that the support rod 4 can rotate on the fulcrum. The other end of the support rod 4 is rotatably connected to one end of the driving rod 5, and the other end of the driving rod 5 is rotatably connected to one end of the connecting rod 6, the connecting rod 6 is located above the support rod 4, and a second fulcrum is arranged at a position of the connecting rod 6 close to the driving rod 5.

[0035] One end of the connecting rod 6 away from the driving rod 5 is arranged on a button 7, and the button 7 is arranged on the power line of the first motor. When the button 7 is pressed, the first motor will stop rotating urgently. Among them, the button 7, the first fulcrum and the second fulcrum are all fixedly arranged inside the calender.

[0036] In a normal working state (the paper between the upper pressing roller 3 and the lower pressing roller 1 is in a continuous state), the support rod 4 and the connecting rod 6 are both in a horizontal direction, and the driving rod 5 is in a vertical state.

[0037] The working principle of this embodiment is that the lower pressure roller 1 is driven to rotate by the first motor, and when there is paper between the upper pressure roller 3 and the lower pressure roller 1, the upper pressure roller 3 rotates together with the lower pressure roller 1. When the paper between the upper pressure roller 3 and the lower pressure roller 1 is suddenly broken, the upper pressure roller 3 moves toward the lower pressure roller 1 and drives the support rod 4 to rotate, so that one end of the support rod 4 away from the upper pressure roller 3 is tilted, so that the driving rod 5 drives the connecting rod 6 to rotate, and then the other end of the connecting rod 6 presses the button 7, and the power supply of the first motor is controlled by the button 7 to stop the first motor from rotating.

[0038] Through this embodiment, the tiny movement of the upper pressure roller 3 is amplified by the lever principle, and the first motor is powered off in time by pressing the button 7, so that the lower pressure roller 1 stops rotating, thereby avoiding the dry grinding of the upper pressure roller 3 and the lower pressure roller 1, thereby protecting the upper pressure roller 3 and the lower pressure roller 1.

[0039] In one specific embodiment:

[0040] A support rod 4 is respectively provided on both ends of the upper pressure roller 3, and a first fulcrum is respectively provided at the same position of the two support rods 4. A spring 8 is respectively provided below one end of the two support rods 4 away from the upper pressure roller 3, and the bottom ends of the two springs 8 are respectively fixed on the inner wall of the calender. Under normal working conditions, the springs 8 are in a compressed state.

[0041] In this embodiment, by setting two support rods 4, the stability of the upper pressure roller 3 can be enhanced. By setting a spring 8, the support rod 4 can press the upper pressure roller 3 downward to avoid the upper pressure roller 3 from jumping, so that the pressure on the paper between the upper pressure roller 3 and the lower pressure roller 1 is in a balanced state.

[0042] In another specific embodiment:

[0043] A pressure rod 9 is arranged at one end of the connecting rod 6 away from the driving rod 5. The pressure rod 9 is arranged perpendicular to the connecting rod 6, and the top end of the pressure rod 9 is located on the button 7. Since the actuating end of the button 7 is relatively small, the pressure rod 9 used to actuate the button 7 can avoid the problem that the end of the connecting rod 6 interferes with the housing of the button 7, resulting in the problem that the button 7 cannot be actuated.

[0044] In another specific embodiment:

[0045] The ratio of the power arm to the resistance arm on the support rod 4 is 1:5-1:7, and the ratio of the power arm to the resistance arm on the connecting rod 6 is 1:7-1:10. The stroke of the connecting rod 6 away from the end of the driving rod 5 to touch the button 7 is less than 30 times the distance between the upper pressure roller 3 and the lower pressure roller 1.

[0046] According to statistics, the thickness of conventional A4 paper is about 0.104mm, while the thickness of paper in the calender is about 0.2mm. In this embodiment, the height of the resistance arm of the support rod 4 is 5-7 times the downward movement of the upper pressure roller 3, and the height of the resistance arm of the connecting rod 6 is 35-70 times the downward movement of the upper pressure roller 3. Therefore, when the paper breaks and the upper and lower rollers contact the lower pressure roller 1, the upper pressure roller 3 moves downward by about 0.2mm. At this time, the resistance arm of the connecting rod 6 can move downward by at least 7mm. At the same time, a button 7 with a touch stroke of less than or equal to 6mm is selected to ensure that the button 7 is normally touched.

[0047] In the present application, the displacement of the upper pressing roller 3 can be magnified to 35-70 times through a lever mechanism, thereby reducing the space occupied by the calender.

[0048] In another specific embodiment:

[0049] A pressure rod 9 is provided on the end of the support rod 4 away from the upper pressure roller 3. The pressure rod 9 is arranged along the length direction of the support rod 4. A cam 10 is arranged above the pressure rod 9. The protruding end of the cam 10 can contact the top of the pressure rod 9. The cam 10 is arranged on the output shaft of a second motor 2. The second motor 2 is a servo motor and is also fixed in the calender. The cam 10 is driven to rotate by the second motor 2, so that the support rod 4 is driven to rotate by the cam 10.

[0050] Generally, the distance between the rotating shaft of the cam 10 and the pressure rod 9 is less than 5 times the distance between the upper pressure roller 3 and the lower pressure roller 1. And the second motor 2 is also electrically connected to the button 7.

[0051] In this embodiment, when the connecting rod 6 touches the button 7, the second motor 2 starts and rotates a certain number of times, so that the protrusion of the cam 10 is pressed on the pressure rod 9, so that the support rod 4 props up the upper pressure roller 3, separates the upper pressure roller 3 from the lower pressure roller 1, and achieves the purpose of protecting the upper pressure roller 3 and the lower pressure roller 1.

[0052] The above-mentioned embodiments only express the specific implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A roller support structure of a calender, characterized in that: include: A lower pressure roller is arranged in the calender and rotates in a horizontal direction, and the lower pressure roller is connected to the output shaft of a first motor; An upper pressing roller, located above the lower pressing roller and arranged parallel to the lower pressing roller; A support rod, one end of which is rotatably disposed at the end of the upper pressing roller, and a first fulcrum is disposed at a position of the support rod close to the upper pressing roller; A driving rod, one end of which is hinged to an end of the supporting rod away from the upper pressure roller; A connecting rod, located above the driving rod, one end of which is hinged to an end of the driving rod away from the supporting rod, and a second fulcrum is provided at a position of the connecting rod close to the driving rod; A button is located below the end of the connecting rod away from the driving rod, and the button is electrically connected to the first motor.

2. The pressure roller support structure of the calender according to claim 1, characterized in that: A spring is arranged below one end of the support rod away from the upper pressure roller, and the bottom end of the spring is fixed in the calender.

3. The pressure roller support structure of the calender according to claim 2, characterized in that: Two support rods are symmetrically arranged at both ends of the upper pressure roller, and a spring is respectively arranged below one end of the two support rods away from the upper pressure roller.

4. The pressure roller support structure of the calender according to claim 1, characterized in that: A pressure rod is arranged below one end of the connecting rod away from the driving rod, and the end of the pressure rod is close to the top end of the button.

5. The pressure roller support structure of the calender according to claim 1, characterized in that: The ratio of the power arm to the resistance arm on the support rod is 1:5-1:7, and the ratio of the power arm to the resistance arm on the connecting rod is 1:7-1:

10.

6. The pressure roller support structure of the calender according to claim 5, characterized in that: The stroke of the connecting rod away from the driving rod to touch the button is less than 30 times the distance between the upper pressing roller and the lower pressing roller.

7. The pressure roller support structure of the calender according to claim 5, characterized in that: A cam is provided at one end of the support rod away from the upper pressing roller. The cam can be pressed on the end of the support rod and drive the support rod to rotate.

8. The pressure roller support structure of the calender according to claim 7, characterized in that: A pressure bearing rod is arranged on one end of the support rod away from the upper pressure roller, and the cam can contact the pressure bearing rod.

9. The pressure roller support structure of the calender according to claim 8, characterized in that: The distance between the cam shaft and the pressure rod is less than 5 times the distance between the upper pressure roller and the lower pressure roller.

10. The pressure roller support structure of the calender according to claim 1, characterized in that: The output shaft of the first motor is connected to the lower pressure roller.