CN110759154A - Constant tension control system - Google Patents
Constant tension control system Download PDFInfo
- Publication number
- CN110759154A CN110759154A CN201910986065.0A CN201910986065A CN110759154A CN 110759154 A CN110759154 A CN 110759154A CN 201910986065 A CN201910986065 A CN 201910986065A CN 110759154 A CN110759154 A CN 110759154A
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- roller
- tension
- winding
- control system
- speed measuring
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/06—Registering, tensioning, smoothing or guiding webs longitudinally by retarding devices, e.g. acting on web-roll spindle
- B65H23/10—Registering, tensioning, smoothing or guiding webs longitudinally by retarding devices, e.g. acting on web-roll spindle acting on running web
- B65H23/14—Tensioning rollers applying braking forces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/26—Registering, tensioning, smoothing or guiding webs longitudinally by transverse stationary or adjustable bars or rollers
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- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
Abstract
The invention relates to a constant tension control system, which is used for controlling the constant tension in the rolling process of coil materials and comprises the following components: the feeding device comprises a feeding roller, and the feeding roller is used for conveying the coil stock and controlling the motion state of the coil stock; the winding device comprises a winding shaft and a servo motor in transmission connection with the winding shaft, and the coil stock is wound on the winding shaft; the tension measuring device is arranged between the feeding device and the winding device and comprises a force measuring roller and a tension sensor arranged on the force measuring roller, and the coiled material bypasses the force measuring roller; and the PLC receives the tension signal of the tension measuring device and controls the torque of the servo motor according to the tension information. The invention stabilizes the tension and reduces the tension impact during the periodic intermittent motion of acceleration, uniform speed, deceleration, stillness and acceleration in the winding process, thereby achieving the aim of controlling the tension of the wound coil in the system to be stable and constant tension and further ensuring the winding efficiency.
Description
Technical Field
The invention relates to the technical field of coiled material tension control, in particular to a constant tension control system.
Background
Along with the rising of coiled material processing modes of coating machines, die cutting machines, splitting machines and the like, a winding and unwinding control mode becomes one of the most important cores of the equipment, materials on a winding shaft can be gradually increased in radius along with the increase of the wound materials, and therefore the rotating speed and the torque of the winding shaft also need to be continuously changed in real time to match the increase of the winding diameter. The rate of finished products of the equipment is greatly reduced due to improper control modes, and even more, large batches of materials are scrapped directly, so that the whole equipment is paralyzed, and the productivity and the benefit of the equipment are seriously influenced.
At present, the control system combination of a magnetic powder brake, a tension sensor, a tension controller, a magnetic powder clutch and a speed regulating motor is generally adopted in the industry, so that the purpose of controlling the winding and unwinding tension is achieved, and the material is stable in motion and moderate in tension. The biggest difficulty of the equipment is that different solutions need to be devised for different materials to solve, and the problems need to be continuously tried and even cannot be solved after continuous attempts are made.
For a special application, such as label paper, laser is needed to be used for laser etching and printing in the rolling process, so that the rolling system needs to be periodically stopped to facilitate the operation of the laser etching device on the label paper. The system needs to be in a periodic intermittent motion state of acceleration, uniform speed, deceleration, stillness and acceleration for a long time, and can be subjected to periodic tensile impact in the process of continuously starting, stopping and feeding the motor, and the material motion needs to be as stable as possible on the premise of tension control, so that the control of the laser engraving tension of the label paper becomes more difficult.
Disclosure of Invention
Therefore, it is necessary to provide a constant tension control system for solving the problem of difficult winding tension control, which can stabilize the tension and reduce tension impact while adapting to periodic intermittent motions of acceleration, uniform velocity, deceleration, stillness and acceleration in the winding process, thereby achieving the purpose of stabilizing the winding tension in the control system and further ensuring the winding efficiency.
In order to realize the technical effects, the invention discloses the following technical scheme:
a constant tension control system for constant tension control in a coil winding process, comprising: the feeding device comprises a feeding roller, and the feeding roller is used for conveying the coil stock and controlling the motion state of the coil stock; the winding device comprises a winding shaft and a servo motor in transmission connection with the winding shaft, and the coil stock is wound on the winding shaft; the tension measuring device is arranged between the feeding device and the winding device and comprises a force measuring roller and a tension sensor arranged on the force measuring roller, and the coiled material bypasses the force measuring roller; and the PLC receives the tension signal of the tension measuring device and controls the torque of the servo motor according to the tension information.
In the constant tension control system, a tension measuring device is arranged on a coil path between the feeding device and the winding device and used for monitoring the coil tension between the feeding device and the winding device in real time, then the tension data is transmitted to the PLC for analysis, so that current state data is obtained, and after the current state data is compared with preset data, the torque of a servo motor in the winding device is directly controlled; thereby achieving the purpose of stabilizing the coiling tension in the system. Because the coil stock needs to undergo the periodic intermittent motion process of acceleration, uniform speed, deceleration, stillness and acceleration in the winding process, wherein when the coil stock is still, a servo motor of the winding device needs to be in a stillness or idle running state, and the idle running needs a more complex mechanical structure and a control system, and the winding device is difficult to control without reverse rotation when the coil stock is still; the static state can not be realized by controlling the speed directly, when the servo motor is static, the input voltage is 0V, the servo motor can not provide torque, at the moment, the tension of the coil stock is greater than the rotating force provided by the torque, and the winding shaft rotates reversely, so that the coil stock is scattered out of the winding shaft; therefore, the PLC directly controls the torque, maintains the difference between the rotating force provided by the torque and the stress of other coil materials such as acceleration, friction and the like, and can realize constant winding tension in the static, acceleration and deceleration or uniform speed stages.
In some embodiments, the device further comprises a speed measuring device and a power unit which are arranged between the feeding device and the winding device, wherein the speed measuring device comprises a guide rail, a speed measuring roller which is connected to the guide rail in a sliding mode, and a position sensor which is used for measuring the position of the speed measuring roller; the roll material bypasses the speed measuring roller, the power unit provides conservative force for the speed measuring roller, the direction of the conservative force is opposite to the direction of the pulling force applied to the speed measuring roller by the roll material, and the PLC receives the position signal of the speed measuring roller and further controls the servo motor.
In some embodiments, the speed measuring device further comprises a near-transmission guide roller and a far-transmission guide roller, the guide rail is a linear guide rail, the guide rail is arranged on a perpendicular bisector of the near-transmission guide roller and the far-transmission guide roller, and the coil stock sequentially bypasses the near-transmission guide roller, the speed measuring roller and the far-transmission guide roller.
In some embodiments, the speed measuring device further comprises a near-transmission guide roller and a far-transmission guide roller, the guide rail is an arc-shaped guide rail, the far-transmission guide roller is arranged at the center of the guide rail, and the near-transmission roller is positioned outside the circle of the guide rail; the coil stock walks around in proper order the nearly roller that passes through, the roller that tests the speed, the telemetering deflector roll.
In some embodiments, the power unit is an air cylinder, and an output end of the air cylinder is connected with the tachometer roller.
In some embodiments, the bottom of the cylinder and the piston form a capacitor, the capacitor is connected with the alternating current meter and the alternating power supply in series, or two ends of the capacitor are connected with the alternating power supply and connected with the alternating voltage meter in parallel; the alternating current meter or the alternating voltage meter transmits measured data to the PLC controller, and the PLC controller further controls the servo motor.
In some embodiments, the speed measurement device is disposed upstream of the tension measurement device.
In some embodiments, the feeding device further comprises a feeding stepping motor and a brake roller, wherein the output end of the feeding stepping motor is connected with the feeding roller, and the brake roller presses the coil material on the feeding roller.
In some embodiments, the device further comprises an unwinding shaft and a magnetic powder brake connected with the unwinding shaft, wherein the coil stock is released from the unwinding shaft, conveyed by the feeding device, and wound on a winding device after passing through the tension measuring device.
In some embodiments, a laser device for laser engraving printing the roll material is further included, and the roll material is located on a focal plane of the laser device.
Drawings
FIG. 1 is a schematic diagram of a constant tension control system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a contact position sensor and its structural relationship in a constant tension control system according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a remote sensing position sensor in a constant tension control system according to an embodiment of the present invention and a structural relationship thereof;
fig. 4 is a schematic diagram of a circular guide rail and a structural relationship thereof in a constant tension control system according to an embodiment of the present invention.
Reference numerals:
100, a feeding device; 101, a feed roller; 102, a feeding stepping motor; 103, a brake roller; 104, a brake cylinder;
200, a winding device; 201, a winding shaft; 202, a servo motor;
301, a force measuring roller;
400, a speed measuring device; 401, a tachometer roller; 402, a slider; 403, near-conducting rollers; 404, a remote-transfer guide roller; 405, a guide rail; 406, balancing cylinders; 407, a capacitor; 408, an alternating power supply; 409, an alternating current meter; 410, a magnetic switch; 411, laser distance sensor;
501, a PLC controller;
601, unwinding a reel; 602, a magnetic particle brake;
701, a follower roller; 702, a limiting roller; 703, a limit cylinder;
801, a laser carving device;
and 901, reversing rollers.
Detailed Description
Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and similar directional or positional expressions are used herein for purposes of illustration only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings.
A constant tension control system, referring to fig. 1, comprises a feeding device 100, a winding device 200, and a tension measuring device, wherein the tension measuring device comprises a tension sensor, and a force measuring roller 301 equipped with the tension sensor. The coil stock is sent out from the feeding device 100, bypasses the force measuring roller 301 and is wound on the winding device 200. The winding device 200 comprises a winding shaft 201 for winding the coil and a servo motor 202 with controllable torque, wherein the winding shaft 201 is connected with the output end of the servo motor 202.
The tension information on the force measuring roller 301 is sensed by a tension sensor installed on the force measuring roller 301 and transmitted to a PLC (Programmable Logic Controller) 501, a PID (Proportion integration differentiation) control algorithm (PID) is installed in the PLC 501, the tension information is calculated by the PID control algorithm to obtain an analog voltage for controlling the torque of the servo motor 202, and the analog voltage is connected to the servo motor 202 to compensate and control the torque of the servo motor 202, so that the coiled material is wound on the winding shaft 201 with constant tension.
For the rolling of a type of coil stock, operations such as laser etching, printing and the like need to be performed between the unwinding and the rolling, and during the operation, the coil stock and a device performing the operation need to be kept relatively static. Due to the cost saving requirement, in this embodiment the device performing the operation remains relatively stationary with the constant tension control system as a whole, and therefore the web should also remain relatively stationary with the constant tension control system as a whole during the performance of the operation.
Referring to fig. 1, in one embodiment, the material to be processed is stored on a pay-off reel 601 to be coiled. During processing, the coil stock is released from the unreeling shaft 601, the device for executing operation is arranged on the traveling path of the coil stock to process the coil stock, such as laser etching and the like, and the processed coil stock passes through the feeding device 100 and the force measuring roller 301 and is finally reeled on the reeling device 200. The constant tension control system further comprises a magnetic powder brake 602, and the output end of the magnetic powder brake 602 is connected with the unwinding shaft 601 and used for tensioning the coil stock. In addition, the constant tension control system further comprises a follower roller 701, a limiting roller 702, a limiting air cylinder 703 and a laser engraving device 801. The follower roller 701 is arranged between the unreeling shaft 601 and the feeding device 100, the coiled material bypasses the follower roller 701, the limiting roller 702 is connected with the output end of the limiting cylinder 703, and under the action of the limiting cylinder 703, the limiting roller 702 presses the coiled material on the follower roller 701. Under the action of the magnetic powder brake 602, the roll material between the follower roller 701 and the feeding device 100 is straightened, the laser carving device 801 is arranged on one side, generally the upper side, of the roll material plane between the follower roller 701 and the feeding device 100, and the roll material is positioned on the focal plane of the laser carving device 801.
The laser carving device 801 is a device for executing operation, when the coil material runs to a corresponding position, the operation is stopped, the laser carving device 801 carves set information on the surface of the coil material, and after the laser carving is completed, the coil material continues to run until the next position where the coil material is carved by the laser. In the process, the coil stock needs to be subjected to periodic intermittent motion of stillness, acceleration, uniform speed, deceleration and stillness in sequence.
Wherein, during the acceleration and deceleration phases, the tension change △ F satisfies the following equation:
the moment of inertia J of the winding shaft 201 plus the wound coil is a constant value, r is the diameter of the wound coil on the winding shaft 201, a is the instantaneous acceleration of the coil, the acceleration a can be equivalent to △ v/t due to the very rapid occurrence of the physical process, △ v is the variation of the winding speed, and t is the time of the variation, it is known that the winding speed is changed from constant speed v to 0, △ v to-v and the tension change is a positive value when the feeding device 100 brakes, and similarly, when the feeding device 100 starts, the winding speed is changed from 0 to v, △ v to v and the tension change is a negative value, the winding tension is reduced, and the faster the acceleration or deceleration stage develops, the smaller the time t, the greater the tension change.
Because of the influence of the inertia moment J and the rapid acceleration or deceleration process, in one embodiment, a transient compensation device is introduced, referring to fig. 1, including a tachometer roller 401 and a power unit, i.e. a balance cylinder 406, and the balance cylinder 406 is filled with gas at a specific pressure; the coil stock bypasses the speed measuring roller 401, the output end of the balance cylinder 406 is connected with the speed measuring roller 406, and conservative force opposite to the direction of the resultant force of the pulling force of the coil stock on the speed measuring roller 406 is provided.
When the feeding device 100 brakes, the tension of the coil stock is increased, the resultant force of the tension of the speed measuring roller 401 is increased and is larger than the elastic force borne by the speed measuring roller 401, the speed measuring roller 401 is driven to move away from the balance cylinder 406, the coil stock is gradually straightened, and the tension is gradually reduced until the speed measuring roller 401 is in a force balance state, at this time, the movement of the coil stock between the feeding device 100 and the winding device 200 also reaches a balance state, namely is static, in the transient process, when the feeding device 100 brakes, the coil stock is not immediately static but passes through a deceleration process for a period of time, so according to the formula, the time t is increased, and the tension variation △ F is reduced.
When the feeding device 100 is started, the tension of the coil stock is reduced, the resultant force of the tension of the speed measuring roller 401 is reduced so as to be smaller than the elastic force borne by the speed measuring roller 401, the balance cylinder 406 contracts to drive the speed measuring roller 401 to move towards the balance cylinder 406, the coil stock gradually bends more, the tension gradually increases until the speed measuring roller 401 is in a force balance state, at the moment, the motion of the coil stock between the feeding device 100 and the winding device 200 also reaches a balance state, namely uniform motion, in the transient process, when the feeding device 100 is started, the coil stock does not immediately reach the uniform motion, but passes through a time acceleration process, so according to the formula, the time t is increased, and the tension variation △ F is reduced.
As a component providing conservative force, the balancing cylinder 406 may also be replaced by a weight providing gravity, a combination of permanent or electromagnets providing electromagnetic force, or a spring providing elastic force.
In addition, since the web must undergo a standstill, the servomotor 202 of the winding device 200 must also be at standstill or idle. However, the realization of idle rotation requires more complicated mechanical structure and control system, and it is difficult to control the winding device 200 not to reverse when the coil is stationary; when the servo motor 202 is static, the input voltage is 0V, the servo motor 202 cannot provide torque, and at this time, the tension of the coil stock is greater than the rotating force provided by the torque, and the winding shaft rotates reversely, so that the coil stock is scattered out of the winding shaft 201; therefore, the PLC controller 501 directly controls the torque, maintains the difference between the rotational force provided by the torque and the stress of other coil materials such as acceleration and friction, and can realize the constant winding tension at the static, acceleration and deceleration or uniform speed stage.
When the material of the web is determined, the optimum set torque of the servo motor 202 is also determined, and the corresponding maximum rotation speed is also determined. If the speed of servo motor 202 is not limited, the motor will always be operated at the maximum speed that can be achieved at the set torque. As can be seen from the fact that v is r · ω, as the winding radius r increases, even if the same rotational speed, that is, the angular velocity ω, is constant, the winding linear velocity v of the web gradually increases, causing tension abnormality. In order to stabilize the tension of the coil stock, the winding speed of the coil stock needs to be measured and controlled.
Referring to fig. 1, the speed measuring device 400 of the embodiment includes a tachometer roller 401, a power unit such as a balance cylinder 406, a guide rail 405, a slider 402, and a position sensor for measuring the position of the tachometer roller 401. The slider 402 is slidably connected to the guide rail 405; the tachometer roller 401 is connected to the slide block 402 and slides on the guide rail 405 along with the slide block 402; therefore, the position of the tachometer roller 401 is limited on the track of the guide rail 405, and the position sensor can measure the position of the tachometer roller conveniently. The balancing cylinder 406 is connected to the tachometer roller 401 and provides a conservative force.
When the winding speed of the winding device 200 is higher than the feeding speed of the feeding device 100, the total length of the coil between the winding device 200 and the feeding device 100 is shortened, and the speed measuring roller 401 moves to the end of the guide rail 405 where the total length of the coil is shorter.
On the contrary, when the winding speed of the winding device 200 is lower than the feeding speed of the feeding device 100, the total length of the coil between the winding device 200 and the feeding device 100 is increased, and the speed measuring roller 401 moves to the end of the guide rail 405, where the total length of the coil is longer, under the protection of the force.
In one embodiment, referring to fig. 1, a near conducting roller 403 and a far conducting roller 404 are further provided, and the near conducting roller 403 and the far conducting roller 404 are provided near one end of the guide rail 405. Wherein the guide rail 405 is a linear guide rail, and the track of the linear guide rail is positioned on a vertical bisector of the near-transfer guide roller 403 and the far-transfer guide roller 404. The coil stock sequentially bypasses a near conducting roller 403, a speed measuring roller 401 and a far conducting guide roller 404. When the winding speed of the winding device 200 is higher than the feeding speed of the feeding device 100, the speed measuring roller 401 moves to one end of the guide rail 405 close to the near-transmission roller 403 and the far-transmission guide roller 404.
To be more effective, in one embodiment, please refer to fig. 2, wherein the guide rail 405 is an arc-shaped guide rail, the remote-transmission guide roller 404 is disposed at the center of the guide rail 405, and the near-transmission guide roller 403 is located outside the circle of the guide rail 405. In this way, the length of the coil stock from the speed measuring roller 401 to the remote-transmitting guide roller 404 is always a fixed value, and the length of the coil stock from the remote-transmitting guide roller 404 to the winding device 200 is also a fixed value, so that the length of the coil stock from the speed measuring roller 401 to the winding device 200 does not change along with the change of the motion state of the coil stock, which is beneficial to maintaining the stable tension of the coil stock from the speed measuring roller 401 to the winding device 200.
The position sensor for measuring the position of the tachometer roller 401 may be implemented in various forms.
As in one embodiment, referring to fig. 1, the bottom of the balancing cylinder 406 forms a capacitor with the piston, the capacitor is connected in series with an alternating current meter 409 and an alternating power source 408, the alternating current meter 408 transmits the measured data to the PLC controller, which further controls the servo motor. In the above embodiment, the two ends of the capacitor may be connected to the alternating power supply 408 and connected in parallel to the alternating voltmeter; the alternating voltage meter transmits the measured data to the PLC controller, and the PLC controller further controls the servo motor.
As another example, referring to fig. 3, a laser distance sensor 411 is disposed along the track direction of the guide rail 405, and the laser light is projected onto the slider 402 and reflected back to the laser distance sensor 411, so as to obtain the position information of the tachometer roller 401. And transmitting the position information to the PLC, and further controlling the servo motor by the PLC.
In the following, a detailed description is given of a specific embodiment, please refer to fig. 4, the direction is understood according to the intuitive direction on the graph; 4 magnetic switches 410 are installed on the balance cylinder 406, and the total stroke of the balance cylinder 406 is divided according to 1:2:2 from the direction away from the near conductive roller 403 to the direction close to the near conductive roller, so that for convenience of description and understanding, the position relationship between the piston and the magnetic switch 410 is equivalent to the position relationship between the tachometer roller 401 or the slider 402 and the magnetic switch 410.
At the beginning, the slider 402 is pulled to the position close to d in the cd interval for holding, and at this time, the PLC controller 501 gives an analog voltage of 1.0V to the speed limiting terminal of the servo motor 202, so as to limit the rotation speed of the servo motor 202 and make it rotate slowly. When the average feeding speed is greater than the winding linear speed, the speed measuring roller 401 moves leftwards slowly, when the speed measuring roller 401 enters a bc interval, it is indicated that the speed measuring roller 401 moves leftwards continuously, the PLC controller 501 gives a 3.0V analog quantity voltage to the speed limiting terminal of the servo motor 202, releases the motor speed, and accelerates the rotation of the motor, and when the speed measuring roller 401 changes the moving direction and moves rightwards slowly to a cd interval, the analog quantity voltage returns to 1.0V, and limits the speed again, and when the speed measuring roller 401 still moves leftwards slowly to an ab interval, it is indicated that the speed of the 3.0V is still too slow, and at this time, the PLC controller 501 gives a 10.0V analog quantity voltage to the speed limiting terminal of the servo motor 202, and releases the motor speed completely, so that the speed measuring roller reaches the corresponding maximum rotating speed under the set torque, and then the speed measuring roller 401 is pulled back rightwards slowly. Therefore, the speed measuring roller 401 and the coil wound on the roller can move back and forth slowly in the ad interval in the whole automatic operation process, the longer the time of the speed measuring roller 401 in the bc interval is, the slower the movement is, the better the control effect is, and the better the final winding effect is.
In one embodiment, the coil material is fed out from the feeding device 100, passes through the speed measuring device 400, the force measuring roller 301 and is wound on the winding device 200 in sequence. Because the speed measuring device 400 has the beneficial effect of tension compensation, the speed measuring device 400 is arranged between the feeding device 100 and the force measuring roller 301, so that the relative stability of force measurement of the force measuring roller 301 is favorably maintained, and the winding tension condition of the coil materials is more accurately reflected.
In one embodiment, referring to fig. 1, because the speed measuring device 400 and the load cell roller 301 are involved, so that the coil cannot be wound into the winding device 200 from an optimal angle, a reversing roller 901 is provided between the load cell roller 301 and the winding device 200 to guide the coil to be wound into the winding device 200 from an optimal angle, so as to avoid scratching the coil.
In this embodiment, the servo motor 202 is an Anchuan 7J series 400W servo, the rated torque is 1.27 N.m, the instantaneous maximum torque is 4.46 N.m, and the rated rotation speed is 3000 r/min. The servo important parameters are selected as follows: pn000 (control mode selection) is 0020, Pn002 (torque limit option) is 0010, Pn400 (torque command input gain) is 100, Pn402 (forward rotation torque limit) is 120, Pn300 (speed command input gain) is 3000, and Pn407 (speed limit during torque control) is 120. Parameter set values of the PID control algorithm: the loop gain is 1.0, the integration time is 0.01, and the differentiation time is 0.001. Experiments prove that the average tape running speed can still reach 300mm/s under the condition of intermittent motion in the embodiment.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A constant tension control system for constant tension control in a coil winding process is characterized by comprising:
the feeding device comprises a feeding roller, and the feeding roller is used for conveying the coil stock and controlling the motion state of the coil stock;
the winding device comprises a winding shaft and a servo motor in transmission connection with the winding shaft, and the coil stock is wound on the winding shaft;
the tension measuring device is arranged between the feeding device and the winding device and comprises a force measuring roller and a tension sensor arranged on the force measuring roller, and the coiled material bypasses the force measuring roller;
and the PLC receives a tension signal of the tension measuring device and controls the torque of the servo motor according to the tension signal.
2. The constant tension control system of claim 1, wherein: the speed measuring device comprises a guide rail, a speed measuring roller and a position sensor, wherein the speed measuring roller is connected to the guide rail in a sliding manner, and the position sensor is used for measuring the position of the speed measuring roller; the roll material bypasses the speed measuring roller, the power unit provides conservative force for the speed measuring roller, the direction of the conservative force is opposite to the direction of the pulling force applied to the speed measuring roller by the roll material, and the PLC receives the position signal of the speed measuring roller and further controls the servo motor.
3. The constant tension control system of claim 2, wherein: speed measuring device still includes pass closely deflector roll and teletransmission deflector roll, the guide rail is linear guide, the guide rail sets up on the perpendicular bisector of passing closely deflector roll and teletransmission deflector roll, the coil stock walks around in proper order pass closely the deflector roll the roller tests the speed the teletransmission deflector roll.
4. The constant tension control system of claim 2, wherein: the speed measuring device also comprises a near transmission guide roller and a far transmission guide roller, the guide rail is an arc-shaped guide rail, the far transmission guide roller is arranged at the circle center of the guide rail, and the near transmission roller is positioned outside the circle of the guide rail; the coil stock walks around in proper order the nearly roller that passes through, the roller that tests the speed, the telemetering deflector roll.
5. The constant tension control system of claim 2, wherein: the power unit is a cylinder, and the output end of the cylinder is connected with the speed measuring roller.
6. The constant tension control system of claim 5, wherein: the bottom of the cylinder and the piston form a capacitor, the capacitor is connected with an alternating current meter and an alternating power supply in series, or two ends of the capacitor are connected with the alternating power supply and are connected with an alternating voltmeter in parallel; the alternating current meter or the alternating voltage meter transmits measured data to the PLC controller, and the PLC controller further controls the servo motor.
7. The constant tension control system of claim 2, wherein: the speed measuring device is disposed upstream of the tension measuring device.
8. The constant tension control system of claim 1, wherein: the feeding device further comprises a feeding stepping motor and a brake roller, the output end of the feeding stepping motor is connected with the feeding roller, and the brake roller presses the coil materials onto the feeding roller.
9. The constant tension control system of claim 1, wherein: the device is characterized by further comprising an unwinding shaft and a magnetic powder brake connected with the unwinding shaft, wherein the coil is released from the unwinding shaft and conveyed by the feeding device, and is wound on the winding device after passing through the tension measuring device.
10. The constant tension control system of claim 1, wherein: the laser engraving machine further comprises a laser device used for carrying out laser engraving printing on the roll material, and the roll material is located on a focal plane of the laser engraving device.
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| CN201910986065.0A CN110759154A (en) | 2019-10-17 | 2019-10-17 | Constant tension control system |
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| CN201910986065.0A CN110759154A (en) | 2019-10-17 | 2019-10-17 | Constant tension control system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111170056A (en) * | 2020-02-27 | 2020-05-19 | 广东利元亨智能装备股份有限公司 | Winding tension reducing device and winding equipment |
| CN111498560A (en) * | 2020-05-08 | 2020-08-07 | 广州卓绝智能科技有限公司 | Paper path tension control system without jumping arm |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090097222A (en) * | 2004-09-30 | 2009-09-15 | 시바우라 메카트로닉스 가부시키가이샤 | Adhesive film adhering device |
| CN102485625A (en) * | 2010-12-01 | 2012-06-06 | 财团法人金属工业研究发展中心 | Constant tension winding device and regulating module thereof |
| CN202784999U (en) * | 2012-08-24 | 2013-03-13 | 湖州凯恩涂层有限公司 | Constant tension control reeling and unreeling mechanism of greygray cloth for trademark materials |
| CN107651479A (en) * | 2017-09-19 | 2018-02-02 | 苏州迈展自动化科技有限公司 | A kind of tension control mechanism and cell winding device |
| CN108217269A (en) * | 2016-12-12 | 2018-06-29 | 西门子公司 | For the method for wound rolls, control device, storage medium and up- coiler |
| CN208150612U (en) * | 2018-03-29 | 2018-11-27 | 浙江华创机电科技有限公司 | A kind of cutting machine unreels double floating roller mechanisms |
| CN110217630A (en) * | 2019-06-05 | 2019-09-10 | 长江大学工程技术学院 | Tension damper |
-
2019
- 2019-10-17 CN CN201910986065.0A patent/CN110759154A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090097222A (en) * | 2004-09-30 | 2009-09-15 | 시바우라 메카트로닉스 가부시키가이샤 | Adhesive film adhering device |
| CN102485625A (en) * | 2010-12-01 | 2012-06-06 | 财团法人金属工业研究发展中心 | Constant tension winding device and regulating module thereof |
| CN202784999U (en) * | 2012-08-24 | 2013-03-13 | 湖州凯恩涂层有限公司 | Constant tension control reeling and unreeling mechanism of greygray cloth for trademark materials |
| CN108217269A (en) * | 2016-12-12 | 2018-06-29 | 西门子公司 | For the method for wound rolls, control device, storage medium and up- coiler |
| CN107651479A (en) * | 2017-09-19 | 2018-02-02 | 苏州迈展自动化科技有限公司 | A kind of tension control mechanism and cell winding device |
| CN208150612U (en) * | 2018-03-29 | 2018-11-27 | 浙江华创机电科技有限公司 | A kind of cutting machine unreels double floating roller mechanisms |
| CN110217630A (en) * | 2019-06-05 | 2019-09-10 | 长江大学工程技术学院 | Tension damper |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111170056A (en) * | 2020-02-27 | 2020-05-19 | 广东利元亨智能装备股份有限公司 | Winding tension reducing device and winding equipment |
| CN111498560A (en) * | 2020-05-08 | 2020-08-07 | 广州卓绝智能科技有限公司 | Paper path tension control system without jumping arm |
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Application publication date: 20200207 |