CN219342700U - Driving device and super calender - Google Patents
Driving device and super calender Download PDFInfo
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- CN219342700U CN219342700U CN202223190073.0U CN202223190073U CN219342700U CN 219342700 U CN219342700 U CN 219342700U CN 202223190073 U CN202223190073 U CN 202223190073U CN 219342700 U CN219342700 U CN 219342700U
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Abstract
The utility model discloses a driving device and a super calender, wherein the driving device comprises a main transmission for driving a driving piece to rotate, the driving piece drives a driven piece to rotate, and the driven piece is connected with an action unit of an auxiliary transmission device; the auxiliary transmission device comprises a fixed auxiliary transmission support, a mounting bracket and a control unit are arranged on the auxiliary transmission support, and an output unit is arranged on the mounting bracket; the control unit controls the output unit to contact the action unit and generate driving force for the action unit, the rotating speed difference between the driving piece and the driven piece in the starting or accelerating stage can be reduced through the auxiliary transmission device, the stability in transmission is guaranteed, the control unit controls the output unit to contact the action unit, and the driving piece and the driven piece are separated after the rotating speed between the driving piece and the driven piece tends to be stable.
Description
Technical Field
The utility model relates to papermaking processing equipment, in particular to a driving device and a super calender.
Background
In order to improve the smoothness of the sheet, calendering can be performed by a calender. If the sheet is required to have a high smoothness, it is typically calendered by means of a supercalender. The super calender is composed of a plurality of press rolls, and paper sheets are rolled for a plurality of times in the super calender, so that smoothness is improved.
The super calender main machine is generally composed of more than ten press rolls, paper guide rolls, a frame and the like, paper sheets are discharged from the unreeling device before normal operation, then sequentially pass through the press rolls and the paper guide rolls, and finally are reeled to the reeling device, so that the paper guiding process is completed. As the roller speed increases, it gradually accelerates to the running vehicle speed. During the paper introduction and acceleration, the sheet is subjected to a great tensile force. For high and medium basis weight paper, the tensile strength of the paper is high, so that the paper can bear the tensile force of paper guiding and accelerating stages. However, for low basis weight paper, i.e., thin paper and ultra-thin paper, the paper strength is low, and there is a speed difference between the main transmission speed of the super calender and the speed of the paper guiding roller during paper guiding and accelerating, so that the paper guiding and accelerating are easily broken. In order to avoid breaking, the conventional method is to reduce the pulling force, slowly accelerate and prolong the acceleration time, thus reducing the production efficiency.
Disclosure of Invention
In order to solve the technical problems, the utility model provides a driving device and a super calender, which avoid easy paper breakage in paper guiding and accelerating stages and improve the production efficiency when processing thin paper.
The specific scheme is as follows:
the driving device comprises a main transmission for driving the driving piece to rotate, wherein the driving piece drives the driven piece to rotate, and the driven piece is connected with an action unit of the auxiliary transmission device; the auxiliary transmission device comprises a fixed auxiliary transmission support, a mounting bracket and a control unit are arranged on the auxiliary transmission support, and an output unit is arranged on the mounting bracket; the control unit controls the output unit to contact the acting unit and generate a driving force to the acting unit.
The acting force between the output unit and the acting unit is gear meshing force.
The acting force between the output unit and the acting unit is friction force.
The control unit is a linear telescopic mechanism, and two ends of the linear telescopic mechanism are hinged with the auxiliary transmission support and the mounting bracket; the mounting bracket is rotatably arranged on the auxiliary transmission support; the telescopic driving mounting bracket of the linear telescopic mechanism rotates around the rotation axis between the auxiliary transmission support and the mounting bracket.
The output unit is driven by an auxiliary motor, and a speed reducer is arranged between the auxiliary motor and the driving unit.
The device also comprises a frame, a top roller arranged at the top of the frame in a rotating way, a bottom roller arranged at the bottom of the frame in a rotating way, a compression roller system and a paper guide roller system arranged between the top roller and the bottom roller in a rotating way; the main driving part is used as a driving part for driving the compression roller system, one compression roller in the compression roller system and one guide roller in the guide roller system are positioned on the same pushing arm, and the pushing arm is at least one and is rotatably arranged on the frame; the compression roller and the paper guide roller are positioned on one side of the rotation center of the pushing arm and the frame, the other side of the rotation center is provided with a hydraulic cylinder, and two ends of the hydraulic cylinder are respectively hinged with the pushing arm and the frame;
the top roller, the paper guide roller and the bottom roller are driven by an auxiliary transmission device as driven parts; the auxiliary transmission support is arranged on the frame.
Gears are arranged at the ends of the top roller and the bottom roller and serve as action units, and the output unit is a gear meshed with the action units;
the paper guide roller is used as an action unit, the output unit is a friction wheel arranged on the mounting bracket, and friction driving force is generated between the friction wheel and the paper guide roller.
The paper guide rollers are divided into an inner leading roller and an outer paper guide roller, and the inner paper guide roller and the outer paper guide roller are arranged in a staggered mode.
The control system comprises a programmable logic controller for detecting the speed of the main transmission, and is connected with a frequency converter through a circuit, and the frequency converter controls the rotation speed of the auxiliary motor; the control unit controls the generation of the acting force between the output unit and the acting unit by a programmable logic controller.
According to the driving device disclosed by the utility model, through the auxiliary transmission device, the rotating speed difference between the driving piece and the driven piece in the starting or accelerating stage can be reduced, the stability in transmission is ensured, and the contact between the output unit and the action unit is controlled through the control unit, so that the driving piece and the driven piece can be separated from each other after the rotating speed between the driving piece and the driven piece tends to be stable.
The utility model discloses a super calender with an auxiliary driving device, which is characterized in that in the paper guiding and accelerating stage, the speed of a main transmission is detected by a control system, the rotating speed of an auxiliary motor is adjusted, the auxiliary transmission device is convenient for transmitting a top roller, a bottom roller and a paper guiding roller, the tension received by paper is caused to be dispersed to a plurality of stages, the tension received by the paper is reduced, paper breakage can be reduced or even avoided, and the production efficiency is improved.
Drawings
FIG. 1 is a front view of a calender;
FIG. 2 is a view in the direction A of FIG. 1;
FIG. 3 is a schematic diagram of the structure in which the force between the output unit and the acting unit is gear mesh force;
FIG. 4 is a view in the B direction of FIG. 3;
FIG. 5 is a schematic view of a contact structure between an action unit and a friction wheel;
FIG. 6 is a view in the direction C of FIG. 5;
fig. 7 is a flow chart of a control system.
In the figure: the device comprises a frame 1, a top roller 2, a bottom roller 3, a compression roller 4, an inner paper guide roller 5, an outer paper guide roller 6, a main transmission 7, an output unit 8, an action unit 9, a control unit 10, an auxiliary transmission support 11, a mounting bracket 12, an auxiliary motor 13 and a speed reducer 14.
Detailed Description
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the present utility model. It will be apparent to those skilled in the art that the described embodiments are only a part, but not all, of the implementations of the utility model, and that all other embodiments, based on which those skilled in the art will come to lie within the scope of the utility model without making any inventive effort.
As shown in fig. 1-7, the utility model discloses a driving device, which comprises a main transmission 7 for driving a driving member to rotate, wherein the driving member drives a driven member to rotate, the driving member drives articles such as paper, cotton and the like to move forwards when rotating, and the articles drive the driven member to rotate, so that an error exists between the driving member and the driven member when the driving member and the driven member are just started or the main transmission 7 is accelerated, and the driven member is connected with an action unit 9 of an auxiliary transmission device for reducing the error; the auxiliary transmission device comprises a fixed auxiliary transmission support 11, a mounting bracket 12 and a control unit 10 are arranged on the auxiliary transmission support 11, and an output unit 8 is arranged on the mounting bracket 12; the control unit 10 controls the output unit 8 to contact the acting unit 9 and generate a driving force to the acting unit 9. The output unit 8 is driven to rotate by the auxiliary motor 13, the output unit 8 rotates and is contacted with the action unit 9 under the action of the control unit 10, and the action unit 9 is driven, so that the rotation speed difference between the driven piece and the driving piece is reduced.
The acting force between the output unit 8 and the acting unit 9 is gear meshing force. The output unit 8 is a gear driven by the auxiliary motor 13, the action unit 9 is a gear arranged at the end part of the driven member, the two gears are mutually meshed or separated through the control unit 10, the auxiliary motor 13 can drive the driven member to rotate through mutual meshing, at the moment, the driven member is simultaneously driven by the driving member and the auxiliary transmission device to rotate, and the separation state is that the gear of the output unit 8 is far away from the gear of the action unit 9, and at the moment, the driven member is driven by the main transmission 7 to rotate.
The acting force between the output unit 8 and the acting unit 9 is a friction force, and the acting unit 9 is a driven piece. The output unit 8 is a friction wheel driven to rotate by the auxiliary motor 13, and the driven piece can be used as the action unit 9 to drive the driven piece to rotate by friction between the friction wheel and the driven piece; the driven member can also be provided with a circular ring, the circular ring is an action unit 9, and rolling friction force generated by interaction between the circular ring and the friction wheel is used as driving force of the driven member, and the driven member is driven to rotate by the driving member and the auxiliary transmission device at the same time. The distance between the friction wheel and the action unit 9 is controlled by the control unit 10, so that the purposes of generating friction force and eliminating friction force are achieved.
The control unit 10 is a linear telescopic mechanism, and two ends of the linear telescopic mechanism are hinged with the auxiliary transmission support 11 and the mounting bracket 12; the mounting bracket 12 is rotatably arranged on the auxiliary transmission support 11; the linear telescopic mechanism stretches and contracts to drive the mounting bracket 12 to rotate around the rotation axis between the auxiliary transmission support 11 and the mounting bracket 12. The linear telescopic mechanism can select an auxiliary cylinder, the auxiliary cylinder can not rotate the mounting bracket 12 when being extended, the output unit 8 can be driven to approach the action unit 9 when rotating, and the action unit 9 and the output unit 8 are contacted with each other to generate acting force so as to provide power for the driven piece. After the rotation speed of the driven member is matched with that of the driving member, the auxiliary cylinder is shortened, and under the action of the auxiliary cylinder, the output unit 8 is far away from the action unit 9, so that the auxiliary transmission device eliminates the driving of the driven member.
The auxiliary transmission device controls the rotation of the mounting bracket 12 through the auxiliary cylinder to drive the driven part by the auxiliary transmission device, the auxiliary transmission device can also drive the driven part through linear motion, the mounting bracket 12 is connected with the auxiliary transmission bracket through the placement of the guide rail pair, the mounting bracket 12 is driven to approach the driven part through the auxiliary cylinder, and then the output unit 8 is contacted with the action unit 9 and generates acting force.
The output unit 8 is driven by an auxiliary motor 13, and a speed reducer 14 is arranged between the auxiliary motor 13 and the driving unit.
A super calender comprising the auxiliary transmission device, and further comprising a frame 1, a top roller 2 rotatably arranged at the top of the frame 1, a bottom roller 3 rotatably arranged at the bottom of the frame 1, a compression roller system and a paper guide roller system rotatably arranged between the top roller 2 and the bottom roller 3; the main transmission 7 is used as a driving piece to drive the compression roller system, one compression roller in the compression roller system and one guide roller in the guide roller system are positioned on the same push arm, the push arm is at least one and is rotationally arranged on the frame 1, and the rotation center is a hinge center; the compression roller and the paper guide roller are positioned on one side of the rotation center of the pushing arm and the frame 1, the other side of the rotation center is provided with a hydraulic cylinder, and two ends of the hydraulic cylinder are respectively hinged with the pushing arm and the frame 1; the top roller 2, the paper guide roller and the bottom roller 3 are driven by an auxiliary transmission device as driven parts; the auxiliary transmission support 11 is arranged on the frame 1. The paper sequentially passes through a top roller 2, a compression roller system, a paper guide roller system and a bottom roller 3, and the compression roller drives the paper to run through a main transmission 7, and in the running process, the paper guide roller is driven to rotate; under the combined action of the paper guide roller and the press roller, the paper is rolled and calendered, and in the acceleration stage of the paper guiding and main transmission 7, the rotation speed between the press roller and the paper guide roller has a certain error, so that the paper is cracked during calendering, an auxiliary transmission device is arranged, the auxiliary transmission device drives a driven piece, and the error between the driven piece and a driving piece is reduced.
The pushing arms are equivalent to a lever, the hydraulic cylinders are arranged for balancing the two ends of the lever, the distance between two adjacent pushing arms can be changed by adjusting the length of the hydraulic cylinders, the positions of the pressing roller and the paper guide roller are driven to be changed, and the distances and the pressures between the gears and between the friction wheel and the guide roller are conveniently adjusted. When the device is operated, the oil pressure of the hydraulic cylinder can be set in advance according to the requirement, so that the pressure between the gears and between the friction wheel and the guide roller reaches the expected value. When the operation is finished, the auxiliary transmission can be quickly disconnected.
Gears are arranged at the end parts of the top roller 2 and the bottom roller 3 and serve as an action unit 9, the output unit 8 is a gear meshed with the action unit 9, and the meshed gears ensure rigid connection when the driven piece is driven to rotate; the end of the top roller 2 and the bottom roller 3 can be provided with gears, the provided gears are meshed with the gears serving as the output units 8, and the two gears reach a meshed or separated state through an auxiliary cylinder, so that the auxiliary motor 13 can drive the top roller 2, the bottom roller 3 and the paper guide roller to rotate. When starting or accelerating, the main transmission 7 drives the press roller to rotate, the press roller drives the paper to move, the paper contacts with the paper guide roller, the paper guide roller drives the gear serving as the action output unit 8 to rotate through the auxiliary motor 13, and the gear serving as the action output unit 8 is driven by the auxiliary cylinder to be meshed with the gear serving as the action unit 9, so that the top roller 2, the bottom roller 3 or the paper guide roller is driven to rotate. At this time, the top roller 2, the bottom roller 3 and the paper guiding roller are driven to rotate by the driving piece and the auxiliary transmission device. After the speed is stable, the meshed gears are separated through the auxiliary cylinder, and at the moment, the top roller 2 and the bottom roller 3 are driven to rotate by the moving paper. The top roller 2 and the bottom roller 3 can also be driven to rotate by friction force.
The paper guide roller itself serves as the action unit 9, and the output unit 8 is a friction wheel provided on the mounting bracket 12, and a frictional driving force is generated between the friction wheel and the paper guide roller. When the paper guide roller is started or accelerated, the auxiliary air cylinder drives the friction wheel to contact with the paper guide roller and generate friction force so as to drive the paper guide roller to rotate. And after the speed of the paper guide roller reaches a stable state, the auxiliary air cylinder controls the friction wheel to be far away from the paper guide roller. One or more of the roller sets may be selectively caused to rotate by friction or gear mesh forces.
The guide rollers are divided into an inner guide roller and an outer guide roller 6, and the inner guide roller 5 and the outer guide roller 6 are arranged in a staggered manner. The inner paper guide roller 5 is positioned between the press roller and the hinge center, and the outer paper guide roller 6 is positioned on the same side of the press roller and is far away from the hinge center. The purpose of this is to reduce sheet folding. If the paper guide roller is not used, the calendering work can be completed by using only the pressing roller. However, since the wrap angle of the paper on the press roller is too large, defects on the roller surface (roller surface cylindricity error, uneven wear, dirt adhesion, etc.) have a great influence on the paper, and paper sheet folding is easily caused. The staggered paper guide roller arrangement can reduce wrap angles of paper on the press roller, thereby reducing discounting.
The rotating speed of the auxiliary motor 13 is controlled by a control system, the control system comprises a programmable logic controller for detecting the speed of the main transmission 7, and the frequency converter is connected with the rotating speed of the auxiliary motor 13 through a circuit and controls the rotating speed of the auxiliary motor 13; the control unit 10 controls the generation of the force between the output unit 8 and the action unit 9 by a programmable logic controller.
Further disclosed is a calendering method comprising:
s1, a paper roll is discharged from an unreeling device, sequentially passes through a top roller 2, a paper guide roller system, a compression roller system and a bottom roller 3, and is reeled onto a reeling device;
s2, opening the main transmission 7 to start paper guiding, and simultaneously controlling the contact between the output unit 8 and the action unit 9 by the control unit 10 to generate acting force;
s3-1, the acting force between the output unit 8 and the acting unit 9 is gear meshing force, the speed of the main transmission 7 is monitored through the control system, and the rotating speed of the auxiliary motor 13 is regulated through the relation between the speed of the main transmission 7 and the rotating speed of the auxiliary motor 13, wherein the relation is n Auxiliary motor =v Main drive *Z Action unit *i Speed reducer /（π*D Action unit *Z Output unit ）；
S3-2, the acting force between the output unit 8 and the acting unit 9 is friction force, the speed of the main transmission 7 is monitored through the control system, and the rotating speed of the auxiliary motor 13 is regulated through the relation between the speed of the main transmission 7 and the rotating speed of the auxiliary motor 13, wherein the relation is n Auxiliary motor =v Main drive *i Speed reducer /（π*d Friction wheel ）；
S4, after the paper guiding process is finished, the main transmission 7 continues to accelerate, and the rotating speed of the auxiliary motor 13 is regulated according to the relation in the S3-1 or the S3-2;
s5, after the speed of the main transmission 7 reaches the set speed, the programmable logic controller controls the control unit 10 to stop acting force between the output unit 8 and the acting unit 9.
In S3-1 and S3-2, parameters of auxiliary transmission structures of different rollers are input into a PLC, and the PLC adjusts parameters of a frequency converter of a corresponding roller by detecting the rotating speed of the main transmission 7, so as to control the rotating speed of an auxiliary motor 13. Wherein in the relation: v Main drive Representing the speed of the main transmission 7, i Speed reducer Representing the gear ratio of the reduction gear 14, D Action unit Representing the diameter, n, of the active unit 9 Auxiliary motor Represents the rotational speed, Z, of the auxiliary motor 13 Action unit Representing the number of teeth, Z, of the active unit 9 in the meshed transmission Output unit Representing the number of teeth of the output unit 8 in the meshed transmission.
According to the driving device disclosed by the utility model, through the auxiliary transmission device, the reduction of the rotating speed difference between the driving piece and the driven piece in the starting or accelerating stage can be ensured, the stability in transmission is ensured, and the contact between the output unit 8 and the action unit 9 is controlled through the control unit 10, so that the driving piece and the driven piece can be separated after the rotating speed between the driving piece and the driven piece tends to be stable.
The utility model discloses a super calender with an auxiliary driving device, which is characterized in that in the paper guiding and accelerating stage, the speed of a main transmission 7 is detected through a control system, the rotating speed of an auxiliary motor 13 is adjusted, the auxiliary transmission device is convenient for transmitting a top roller 2, a bottom roller 3 and a paper guiding roller, the tension received by paper is caused to be dispersed to a plurality of stages, the tension received by the paper is reduced, paper breakage can be reduced or even avoided, and the production efficiency is improved.
The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features. It should be noted that modifications and adaptations to the utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.
Claims (8)
1. The driving device comprises a main transmission for driving the driving piece to rotate, and the driving piece drives the driven piece to rotate, and is characterized in that the driven piece is connected with an action unit of the auxiliary transmission device; the auxiliary transmission device comprises a fixed auxiliary transmission support, a mounting bracket and a control unit are arranged on the auxiliary transmission support, and an output unit is arranged on the mounting bracket; the control unit controls the output unit to contact the acting unit and generate a driving force to the acting unit.
2. A driving device according to claim 1, wherein the force between the output unit and the acting unit is a gear mesh force.
3. A driving device according to claim 1, wherein the force between the output unit and the acting unit is a friction force.
4. The driving device according to claim 1, wherein the control unit is a linear telescopic mechanism, and two ends of the linear telescopic mechanism are hinged with the auxiliary transmission support and the mounting bracket; the mounting bracket is rotatably arranged on the auxiliary transmission support; the telescopic driving mounting bracket of the linear telescopic mechanism rotates around the rotation axis between the auxiliary transmission support and the mounting bracket.
5. A driving device according to claim 1, characterized in that the output unit is driven by an auxiliary motor, a speed reducer being arranged between the auxiliary motor and the driving unit.
6. A supercalender comprising a drive according to any of claims 1-5, further comprising a frame, a top roll rotatably arranged at the top of the frame, a bottom roll rotatably arranged at the bottom of the frame, a roll train and a guide roll train rotatably arranged between the top roll and the bottom roll; the main driving part is used as a driving part for driving the compression roller system, and the main driving part is characterized in that one compression roller in the compression roller system and one guide roller in the guide roller system are positioned on the same pushing arm, and the pushing arm is at least one and is rotatably arranged on the frame; the compression roller and the paper guide roller are positioned on one side of the rotation center of the pushing arm and the frame, the other side of the rotation center is provided with a hydraulic cylinder, and two ends of the hydraulic cylinder are respectively hinged with the pushing arm and the frame; the top roller, the paper guide roller and the bottom roller are driven by an auxiliary transmission device as driven parts; the auxiliary transmission support is arranged on the frame.
7. The super calender according to claim 6, wherein the top roll and the bottom roll are provided with gears at their ends as action units, and the output unit is a gear meshed with the action units; the paper guide roller is used as an action unit, the output unit is a friction wheel arranged on the mounting bracket, and friction driving force is generated between the friction wheel and the paper guide roller.
8. The supercalender of claim 7, wherein the guide rolls are divided into inner lead rolls and outer guide rolls, the inner guide rolls being staggered from the outer guide rolls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223190073.0U CN219342700U (en) | 2022-11-30 | 2022-11-30 | Driving device and super calender |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223190073.0U CN219342700U (en) | 2022-11-30 | 2022-11-30 | Driving device and super calender |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219342700U true CN219342700U (en) | 2023-07-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223190073.0U Active CN219342700U (en) | 2022-11-30 | 2022-11-30 | Driving device and super calender |
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| Country | Link |
|---|---|
| CN (1) | CN219342700U (en) |
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- 2022-11-30 CN CN202223190073.0U patent/CN219342700U/en active Active
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