Rewinding device and replacement method and application of bearing assembly of rewinding device

Abstract

The invention belongs to the technical field of papermaking, and particularly relates to a rewinding device and a replacement method and application of a bearing assembly of the rewinding device. The method comprises the following steps of: 1, disconnecting an output shaft from a to-be-replaced bearing assembly, and dismounting the to-be-replaced bearing assembly; secondly, the paper kicking assembly is lifted from the supporting frame to the preset height. And thirdly, the bearing assembly to be replaced is hoisted, and a new bearing assembly is installed at the corresponding end of the bottom roller. And fourthly, the paper kicking assembly is installed on the supporting frame, and the output shaft is connected with a new bearing assembly again. Therefore, the method is simple, the bearing assembly can be replaced in a short time without disassembling the supporting rod and the supporting frame, the production cost can be reduced, and the operation process is simplified.

Description

Technical Field

[0001] The present application relates to the technical field of papermaking, and in particular, to a rewinding device, a method for replacing a bearing assembly thereof, and an application thereof. Background Art

[0002] A rewinder is a device used for rewinding large rolls of paper, film, non-woven fabric and other rolled materials. Its main function is to rewind the original large roll of materials into smaller rolled products according to certain specifications and requirements to meet the usage needs of different users.

[0003] During the operation of the rewinder, the bearing assembly installed on the bottom roller is prone to wear. In the related art, the process of replacing the bearing assembly is very complicated. It is necessary to build a scaffolding, first disassemble the main equipment of the rewinder, then lift out the entire paper pressing roller and the disassembled frame, then lift out the paper kicking device above the bottom roller as a whole, and finally lift out the bottom roller. Only after the above process can the bearing assembly of the bottom roller be replaced, and after replacement, it is restored in sequence. It takes about 7 days. Summary of the Invention

[0004] In view of the above problems, the present application is proposed. The present application provides a rewinding device, a method for replacing a bearing assembly thereof, and an application thereof.

[0005] According to one aspect of the present application, there is provided a rewinding device, comprising:

[0006] A paper pressing support assembly, a rewinding module and a driving module. The paper pressing support assembly has two oppositely arranged support rods. The rewinding module is arranged between the two support rods. The rewinding module includes a paper kicking unit and a bottom roller unit distributed in sequence along the direction of decreasing height of the support rod. The paper kicking unit includes a support frame and a paper kicking assembly. Two ends of the support frame are connected to the support rod. The paper kicking assembly is arranged on the side of the support frame facing the bottom roller unit. The bottom roller unit includes a bearing assembly and a plurality of bottom rollers arranged along the radial direction of the support rod. The bearing assembly is arranged at both ends of each bottom roller. The support rod is provided with a through hole for accommodating the output shaft of the driving module, and the output shaft is arranged at one end of the bottom roller facing the driving module.

[0007] According to another aspect of the present application, there is provided a method for replacing a bearing assembly of a rewinding device, comprising:

[0008] Step 1, disconnect the connection between the output shaft and the bearing assembly to be replaced, and remove the bearing assembly to be replaced;

[0009] Step 2, lift the paper kicking assembly from the support frame to a preset height;

[0010] Step 3, lift the bearing assembly to be replaced, and install the new bearing assembly at the corresponding end of the bottom roller;

[0011] Step 4: Install the paper kicking assembly on the support frame and reconnect the output shaft to the new bearing assembly.

[0012] According to another aspect of the present application, there is provided an application of the above rewinding device and the method for replacing the bearing assembly of the above rewinding device in the paper-making field.

[0013] Compared with the prior art, in the rewinding device provided by the present application, the method for replacing its bearing assembly, and the application, the method is simple and can replace the bearing assembly in a relatively short time without disassembling the support rod and the support frame, which is beneficial to reducing production costs and simplifies the operation process.

[0014] It should be understood that both the foregoing general description and the following detailed description are exemplary and are intended to provide further explanation of the claimed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] By describing the embodiments of the present application in more detail in conjunction with the accompanying drawings, the above and other objects, features, and advantages of the present application will become more apparent. The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation to the present application. In the drawings, the same reference numerals generally represent the same components or steps.

[0016] Figure 1 FIG. shows a schematic structural diagram of the rewinding device according to the embodiment of the present application;

[0017] Figure 2 FIG. shows a flowchart of the method for replacing the bearing assembly of the rewinding device according to the embodiment of the present application.

[0018] REFERENCE SIGNS:

[0019] 1 - Paper pressing support assembly; 101 - Support rod; 102 - Rewinding device main body; 103 - Paper pressing roller; 104 - Guide member; 2 - Rewinding module; 201 - Paper kicking unit; 2011 - Support frame; 2012 - Paper kicking assembly; 20121 - Paper kicking part; 20122 - Connecting member; 20123 - First locking member; 20124 - Second locking member; 20125 - Hydraulic driving part; 202 - Bottom roller unit; 2021 - Bearing assembly; 2022 - Bottom roller; 3 - Driving module and 301 - Output shaft. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] In order to make the objectives, technical solutions, and advantages of the present application more apparent, exemplary embodiments according to the present application will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. It should be understood that the present application is not limited by the exemplary embodiments described herein.

[0021] A rewinder is a device used to rewind large rolls of materials such as paper, film, non-woven fabric, etc. Its main function is to rewind the original large roll of materials into smaller roll-shaped products according to certain specifications and requirements to meet the usage needs of different users.

[0022] Figure 1 The structure diagram of the rewinding device according to the embodiment of the present application is shown. As Figure 1 shown, the rewinding device provided by the embodiment of the present application includes a paper pressing and supporting component 1, a rewinding module 2 and a driving module 3. The paper pressing and supporting component 1 has two oppositely arranged support rods 101. The rewinding module 2 is arranged between the two support rods 101. The rewinding module 2 includes a paper kicking unit 201 and a bottom roller unit 202 that are sequentially distributed along the direction of decreasing height of the support rod 101. The paper kicking unit 201 includes a support frame 2011 and a paper kicking component 2012. Both ends of the support frame 2011 are connected to the support rod 101. The paper kicking component 2012 is arranged on the side of the support frame 2011 facing the bottom roller unit 202. The bottom roller unit 202 includes a bearing assembly 2021 and a plurality of bottom rollers 2022 arranged along the radial direction of the support rod 101. The bearing assembly 2021 is arranged at both ends of each bottom roller 2022. The support rod 101 is provided with a through hole for accommodating the output shaft 301 of the driving module 3. The output shaft 301 is arranged at one end of the bottom roller 2022 facing the driving module 3. It should be understood that in the Figure 1 present application, only one end of the bottom roller 2022 is connected to the driving module 3. Since the volume of the bottom roller 2022 is large, if both ends are driven by the driving module 3, it is difficult to accurately ensure the synchronization of the driving modules 3 at both ends during installation and debugging, and even cause problems such as paper deviation and reduced rewinding quality. And driving at one end can effectively avoid such problems and ensure the stability of the rewinding process.

[0023] When the paper web is introduced into the rewinding device, the paper kicking component 2012 in the rewinding module 2 will kick the paper web onto the bottom roller 2022, and the paper pressing and supporting component 1 will press the paper core to ensure that the paper web can be tightly wound around the paper core. Under the action of the driving module 3, its output shaft 301 can drive the bottom roller 2022 to rotate until the paper roll reaches a certain diameter. At this time, the paper kicking component 2012 can be used to kick the paper roll away from the bottom roller 2022 to prevent the paper roll from sticking to the bottom roller 2022.

[0024] Exemplarily, the paper kicking assembly 2012 provided by the embodiments of the present application includes a paper kicking part 20121, a connecting member 20122, a first locking member 20123, a second locking member 20124, and a hydraulic driving part 20125; the paper kicking part 20121 is connected to the support frame 2011 through the connecting member 20122, and through holes for accommodating the first locking member 20123 are provided on the connecting member 20122 and the support frame 2011. A limiting space for accommodating the hydraulic driving part 20125 is provided on one side of the paper kicking part 20121 facing the support frame 2011, and the paper kicking part 20121 is connected to the hydraulic driving part 20125 through the second locking member 20124. It can be seen that by inserting the first locking member 20123 into the through holes on the connecting member 20122 and the support frame 2011, the locking connection between the paper kicking part 20121 and the support frame 2011 is completed. When the rewinding device needs to perform a paper kicking operation, the hydraulic driving part 20125 will generate power due to the pressure change inside it, and drive the paper kicking part 20121 to move back and forth. Since the paper kicking part 20121 and the hydraulic driving part 20125 are connected through the second locking member 20124, the power generated by the hydraulic driving part 20125 is transmitted to the paper kicking part 20121, driving the paper kicking part 20121 to perform a paper kicking action. After the paper kicking action is completed, the hydraulic driving part 20125 can drive the paper kicking part 20121 to reset. It should be understood that the connecting member 20122 provided by the embodiments of the present application is provided on the paper kicking part 20121. Under the action of the first locking member 20123, the paper kicking part 20121 can be connected to the support frame 2011. The shape of the connecting member 20122 can be adjusted according to the actual situation, as long as the above functions can be achieved, and no limitation is made here. Moreover, the number of the hydraulic driving parts 20125 can be one or more, Figure 1 The schematic diagram shows the situation when the number of the hydraulic driving parts 20125 is two, and the number can be adjusted according to the actual situation, and no limitation is made here.

[0025] In addition, the first locking member 20123 and the second locking member 20124 can be locking pins or other components that can achieve a locking function, and can be adjusted according to the actual situation, and no limitation is made here.

[0026] It is worth noting that in order to better show the connection relationship between the first locking member 20123 and the connecting member 20122, the first locking member 20123 and the connecting member 20122, which were originally on the back of the paper kicking part 20121, are shown in dotted lines on the front of the paper kicking part 20121 in the present application. The connecting member 20122 can be located at the middle position or other positions of the paper kicking part 20121, and can be adjusted according to the actual situation, and no limitation is made here.

[0027] Exemplarily, the paper pressing support assembly 1 provided in the embodiment of the present application includes a rewinding device body 102, a paper pressing roller 103 and two support rods 101, wherein the rewinding device body 102 is disposed between the ends of the two support rods 101 away from the rewinding module 2, and the paper pressing roller 103 is disposed at one end of the rewinding device body 102 facing the rewinding module 2, and its specific size is not limited here. In addition, the paper pressing support assembly 1 also includes a plurality of guide members 104, each of which is disposed at one end of each support rod 101 facing the paper kicking portion 20121, and the guide member 104 is in contact with the paper kicking portion 20121. Among them, the guide member 104 can control the movement stroke of the paper kicking portion 20121, so that it moves along the guide direction of the guide member 104.

[0028] Moreover, the driving module provided in the embodiment of the present application may include a motor and a deceleration unit, the motor is connected to the deceleration unit by transmission, and the output shaft of the deceleration unit is arranged at one end of the bottom roller facing the driving module. When the rewinding device is started, the motor is powered on and starts to run, outputting high-speed rotating power. The power of the motor is transmitted to the deceleration unit, and the deceleration unit reduces the rotation speed and increases the torque at the same time. The power processed by the deceleration unit is transmitted to the bottom roller through the output shaft, driving the bottom roller to rotate and drive the paper to rewind. During the rewinding process, according to the process requirements and actual conditions, the working state of the bottom roller can be adjusted by controlling the rotation speed and direction of the motor to achieve precise control of the paper rewinding speed and tension. It should be understood that as long as the driving module can achieve the function of driving the bottom roller to rotate and drive the paper to rewind, it is not limited to the motor and the deceleration unit, and is not limited here.

[0029] In the related technology, it is necessary to build a scaffold, first disassemble the main body of the rewinding device, then lift out the entire paper pressing roller, the disassembled support rod and the disassembled support frame, then lift out the paper kicking part above the bottom roller, and finally lift out the bottom roller. Only after the above process is completed can the bearing assembly of the bottom roller be replaced, and then it is restored in order after replacement, which takes about 7 days.

[0030] In view of the above problems, the present application provides a method for replacing a bearing assembly of a rewinding device. The method is simple and can achieve replacement of the bearing assembly in a short time without disassembling the support rod and the support frame. Figure 2 The flowchart of the method for replacing the bearing assembly of the rewinding device according to the embodiment of the present application is shown. Figure 2 As shown, the steps of the replacement method are as follows:

[0031] Step 1: Disconnect the output shaft from the bearing assembly to be replaced, and remove the bearing assembly to be replaced.

[0032] Exemplarily, disconnecting the output shaft of the drive module from the old bearing assembly can cut off the power transmission path and prevent mechanical injuries or component damages caused by the accidental startup of the drive module during the disassembly process.

[0033] Step Two: Lift the sheet kicking assembly from the support frame to a preset height.

[0034] In practical applications, the sheet kicking assembly of the sheet kicking unit in the embodiment of the present application is located above the bottom roller or above the rear side. After lifting it to the preset height, the space for lifting and installing the bearing assembly can be increased, avoiding interference with the mechanical components of the sheet kicking unit during the hoisting of the bearing assembly, and ensuring the safety and smoothness of the hoisting process.

[0035] Exemplarily, this Step Two includes: First, remove the hydraulic drive part, the first locking part, and the second locking part from the sheet kicking part, and lift the sheet kicking part to a first preset height. Then, perform cutting operations on the preset area of the sheet kicking part close to the connecting part and both sides where the sheet kicking part contacts the guiding part, and lift the sheet kicking part to a second preset height.

[0036] Among them, the hydraulic drive part is responsible for driving the sheet kicking part to act (such as kicking the sheet and resetting). After removal, the sheet kicking part loses its power source, reducing the risk of sudden movement of the sheet kicking part caused by accidental startup of the hydraulic drive part, which may cause personnel pinching or equipment collision. Removing the first locking part can release the pin connection between the sheet kicking part and the support frame, and removing the second locking part can release the pin connection between the sheet kicking part and the hydraulic drive part. Therefore, after removing the hydraulic drive part, the first locking part, and the second locking part, the space between the sheet kicking part and the support frame can be increased, creating conditions for the sheet kicking part to be lifted to the first preset height. It should be understood that the first preset height is higher than the second preset height, and its specific height depends on the length of the hydraulic drive part and can be adjusted according to actual situations, which is not limited here.

[0037] In addition, the preset area of the sheet kicking part in the embodiment of the present application close to the connecting part is on the same side as the connecting part and is located below the position of the connecting part (that is, relative to the connecting part, this direction is closer to the bottom roller). When the sheet kicking part is lifted upward, the connecting part will contact the preset area, thus hindering the upward movement of the sheet kicking part. Therefore, when performing cutting treatment on the preset area, the sheet kicking part can be hoisted without removing the support frame. It should be understood that Figure 1 the sheet kicking part in

[0038] Moreover, since the guide member provided on the support rod contacts the paper kicking part, after cutting off the two sides where the paper kicking part contacts the guide member, the acting force of the guide member on the paper kicking part can be released, enabling the paper kicking part to be hoisted without removing the support rod.

[0039] Based on this, the second preset height in the embodiment of the present application is 30 - 50 cm. After the above cutting operation is completed, sufficient vertical operation space can be created for the replacement of the bearing assembly.

[0040] Exemplarily, the length of the part cut off by the cutting operation is 6 - 10 cm, the width of the part cut off by the cutting operation is 8 - 9 cm, and the height of the part cut off by the cutting operation is 0.5 - 0.7 cm. When within the above parameter range, the state of the paper kicking part is not affected after cutting, enabling it to still operate normally.

[0041] Step 3: Hoist the bearing assembly to be replaced and install the new bearing assembly at the corresponding end of the bottom roller.

[0042] Step 4: Install the paper kicking assembly on the support frame and reconnect the output shaft to the new bearing assembly.

[0043] Exemplarily, lower the paper kicking part to the initial position, and reinstall the hydraulic driving part, the first locking member, and the second locking member on the paper kicking part to re - connect the paper kicking part to the support frame. And after reconnecting the output shaft to the new bearing assembly, perform calibration processing on the connection position of the bearing assembly and the driving module. The total process only takes 6 - 8 h, significantly shortening the replacement time compared with the prior art. Among them, the calibration processing includes laser alignment calibration or dial indicator calibration, which is beneficial to improving the service life of the bearing assembly, the driving efficiency, and the running accuracy of the rewinding device.

[0044] The present application also provides an application of the above - mentioned rewinding device and the method for replacing the bearing assembly of the above - mentioned rewinding device in the paper - making field, thereby reducing the production cost and simplifying the operation process.

[0045] As described above, this is only the specific implementation manner of the present application. Obviously, various modifications and combinations can be made without departing from the spirit and scope of the present application. Accordingly, this specification and the drawings are merely exemplary illustrations of the present application defined by the appended claims, and are considered to cover any and all modifications, variations, combinations or equivalents within the scope of the present application. Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the intention of the present application includes these changes and modifications. Any person skilled in the art within the technical scope disclosed in the present application can easily think of changes or substitutions, which should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the said claims.

[0046] It should also be noted that in the apparatus and method of the present application, each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations shall be regarded as equivalent solutions of the present application.

[0047] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects are very obvious to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

[0048] The above description has been given for purposes of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although several example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

Claims

1. A rewinding device, characterized in that, Comprising: A paper pressing and supporting assembly, a rewinding module and a driving module. The paper pressing and supporting assembly has two oppositely arranged support rods. The rewinding module is arranged between the two support rods. The rewinding module includes a paper kicking unit and a bottom roller unit sequentially distributed along the direction of decreasing height of the support rods. The paper kicking unit includes a support frame and a paper kicking assembly. Two ends of the support frame are connected to the support rods. The paper kicking assembly is arranged on a side of the support frame facing the bottom roller unit. The bottom roller unit includes a bearing assembly and a plurality of bottom rollers arranged along the radial direction of the support rods. The bearing assembly is arranged at two ends of each bottom roller. The support rod is provided with a through hole for accommodating an output shaft of the driving module. The output shaft is arranged at an end of the bottom roller facing the driving module.

2. The rewinding device according to claim 1, characterized in that, The paper kicking assembly includes a paper kicking part, a connecting piece, a first locking piece, a second locking piece and a hydraulic driving part; the paper kicking part is connected to the support frame through the connecting piece. The connecting piece and the support frame are provided with through holes for accommodating the first locking piece. A limiting space for accommodating the hydraulic driving part is arranged on a side of the paper kicking part facing the support frame. The paper kicking part is connected to the hydraulic driving part through the second locking piece.

3. The rewinding device according to claim 2, characterized in that, The paper pressing and supporting assembly further includes a plurality of guiding pieces. Each guiding piece is arranged at an end of each support rod facing the paper kicking part. The guiding piece is in contact with the paper kicking part.

4. A method for replacing the bearing assembly of the rewinding device according to claim 3, characterized in that, Comprising: Step 1: Disconnect the output shaft from the bearing assembly to be replaced, and remove the bearing assembly to be replaced. Step 2: Lift the paper kicking assembly from the support frame to a preset height. Step 3: Lift the bearing assembly to be replaced, and install the new bearing assembly at the corresponding end of the bottom roller. Step 4: Install the paper kicking assembly on the support frame, and reconnect the output shaft to the new bearing assembly.

5. The method for replacing the bearing assembly of the rewinding device according to claim 4, characterized in that Step 2 includes: Remove the hydraulic driving part, the first locking piece and the second locking piece from the paper kicking part, and lift the paper kicking part to a first preset height. Perform a cutting operation on a preset area of the paper kicking part close to the connecting piece and on both sides where the paper kicking part contacts the guiding piece, and lift the paper kicking part to a second preset height.

6. The method for replacing the bearing assembly of the rewinding device according to claim 5, wherein, The length of the part cut by the cutting operation is 6 - 10 cm, the width of the part cut by the cutting operation is 8 - 9 cm, and the height of the part cut by the cutting operation is 0.5 - 0.7 cm.

7. The method for replacing the bearing assembly of the rewinding device according to claim 5, characterized in that, The first preset height is higher than the second preset height. The second preset height is 30 - 50 cm.

8. The method for replacing the bearing assembly of the rewinding device according to claim 4, characterized in that, The method for replacing the bearing assembly of the rewinding device further includes: Performing a correction process on the connection position between the bearing assembly and the driving module.

9. The method for replacing the bearing assembly of the rewinding device according to claim 8, characterized in that, The correction process includes laser alignment correction or dial indicator correction.

10. Application of the rewinding device according to any one of claims 1 - 3 and the method for replacing the bearing assembly of the rewinding device according to any one of claims 4 - 9 in the paper-making field.

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