CN108663981B - Method for mounting and dismounting metal sleeve - Google Patents
Method for mounting and dismounting metal sleeve Download PDFInfo
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- CN108663981B CN108663981B CN201710188549.1A CN201710188549A CN108663981B CN 108663981 B CN108663981 B CN 108663981B CN 201710188549 A CN201710188549 A CN 201710188549A CN 108663981 B CN108663981 B CN 108663981B
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- mandrel
- metal sleeve
- programmable logic
- logic controller
- loading device
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/054—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/10—Plc systems
- G05B2219/11—Plc I-O input output
- G05B2219/1103—Special, intelligent I-O processor, also plc can only access via processor
Abstract
The invention discloses a method for installing and disassembling a metal sleeve, which comprises the following steps: and the programmable logic controller receives an instruction sent by the upper computer, adjusts the position of the loading device, the diameter and the angle of the mandrel, and controls the loading device to finish the loading and unloading process of the metal sleeve. The method for installing and disassembling the metal sleeve can automatically control the assembling and disassembling process of the metal sleeve, thereby saving the labor cost and improving the control precision.
Description
Technical Field
The invention relates to the technical application field of decoiler equipment at an inlet section of a hot galvanizing unit in the cold rolling industry, in particular to a method for installing and disassembling a metal sleeve.
Background
The cold rolling hot galvanizing production process usually adopts a double uncoiler continuous production technology. The uncoiler generally has an uncoiling function with a plurality of inner diameters, for example, 508mm, 610mm and 760mm, so that when a unit produces steel coils with different inner diameters, the uncoiler can be changed to the inner diameter with the required size by replacing a metal sleeve mounted on a rigid fan-shaped drum of the uncoiler.
At present, the assembling and disassembling mode of the metal sleeve is a manual confirmation mode, and the work condition of each assembling and disassembling step of the assembling and disassembling tool is confirmed by an operator, so that the work of assembling and disassembling the metal sleeve is ensured to be carried out smoothly.
However, in actual production, the inner diameter of the produced steel coil changes frequently, so that the number of times of disassembling and assembling the metal sleeve is large. In the process of replacing the metal sleeve each time, after the metal sleeve is moved each time, the relative position between the metal sleeve and the uncoiler needs to be manually confirmed by an operator, at least 2 operators in the whole replacement process carry out manual confirmation, the labor intensity of the operators is high, and potential safety hazards of the operators exist. In addition, before the metal sleeve is installed on the mandrel of the uncoiler, the traditional method is to detect the rotation angle of the mandrel by adopting two sensors (namely proximity switches) and respectively control the deceleration and the stop of the mandrel by the two sensors, and the method has low control precision, cannot accurately position to meet the production requirement and has poor stability.
In addition, at present, no positioning control technology exists between most of metal sleeves and the uncoiler, so that the unit is easy to slip when the unit is accelerated, the unit is stopped, and the unit capacity is influenced to a certain extent.
In view of the problems in the prior art, it is desirable to provide a method for mounting and dismounting a metal sleeve, which can save labor cost, improve control accuracy and improve unit productivity.
Disclosure of Invention
In order to solve the problems, the invention provides a method for installing and disassembling a metal sleeve, which can automatically control the assembling and disassembling process of the metal sleeve, thereby saving the labor cost and improving the control precision.
In order to achieve the above object, the present invention provides a method for mounting a metal sleeve on a mandrel of an uncoiler, comprising the steps of:
s1.1, controlling a loading device loaded with a metal sleeve to move to a loading position by a programmable logic controller according to a target loading position sent by an upper computer;
s1.2, adjusting the diameter of the mandrel to be equal to the target diameter by the programmable logic controller according to the target diameter sent by the upper computer;
s1.3, controlling the mandrel to rotate until the positioning groove of the mandrel corresponds to the positioning block of the metal sleeve according to a rotation instruction and a movement instruction of the upper computer by the programmable logic controller, and controlling the metal sleeve to move axially along the mandrel until the metal sleeve is completely sleeved on the mandrel;
and S1.4, controlling the diameter of the mandrel to increase by the programmable logic controller according to an expansion instruction sent by the upper computer, so that the gap between two adjacent arc-shaped lining plates of the metal sleeve is increased and is separated from a fixed block of the loading device.
Further, the method for controlling the rotation of the mandrel by the programmable logic controller comprises the following steps:
s3.1, the programmable logic controller receives a rotation instruction sent by the upper computer and controls a motor of the uncoiler to drive the mandrel to rotate;
s3.2, after the programmable logic controller detects the initial point position of the rotation of the mandrel, calculating the rotation angle of the initial point according to the rotation speed of the motor;
and S3.3, determining the time for stopping the rotation of the mandrel by the programmable logic controller according to the target angle and the rotation angle of the starting point sent by the upper computer.
Further, the programmable logic controller detects the position of the starting point of the rotation of the mandrel through a limit sensor.
Further, the programmable logic controller determines the time for changing the spindle from the first speed to the second speed according to the deceleration angle sent by the upper computer and the rotation angle of the starting point, wherein the second speed is less than the first speed.
And further, the programmable logic controller controls the moving mechanism of the steel coil trolley to drive the loading device to move horizontally, and controls the telescopic mechanism of the steel coil trolley to drive the loading device to move vertically.
The invention discloses a method for disassembling a metal sleeve, which is used for taking the metal sleeve down from a mandrel of an uncoiler and comprises the following steps:
s2.1, adjusting the diameter of the mandrel to be equal to the target diameter by the programmable logic controller according to the target diameter sent by the upper computer, and separating the arc-shaped lining plates of the metal sleeve;
s2.2, the programmable logic controller controls the loading device to move to the unloading position according to the target unloading position sent by the upper computer;
s2.3, controlling the mandrel to rotate until the gap between two adjacent arc-shaped lining plates of the metal sleeve corresponds to the position of a fixed block of the loading device according to a rotation instruction and a movement instruction of the upper computer by the programmable logic controller, and controlling the loading device to move axially along the mandrel until the loading device is completely sleeved on the metal sleeve;
and S2.4, controlling the diameter of the mandrel to be reduced to reduce the gap between two adjacent arc-shaped lining plates of the metal sleeve according to a contraction instruction sent by the upper computer by the programmable logic controller, and controlling the metal sleeve to move axially along the mandrel until the metal sleeve is separated from the mandrel after the metal sleeve is matched with a fixed block of the clamping loading device.
Further, the method for controlling the rotation of the mandrel by the programmable logic controller comprises the following steps:
s3.1, the programmable logic controller receives a rotation instruction sent by the upper computer and controls a motor of the uncoiler to drive the mandrel to rotate;
s3.2, after the programmable logic controller detects the initial point position of the rotation of the mandrel, calculating the rotation angle of the initial point according to the rotation speed of the motor;
and S3.3, determining the time for stopping the rotation of the mandrel by the programmable logic controller according to the target angle and the rotation angle of the starting point sent by the upper computer.
Further, the programmable logic controller detects the position of the starting point of the rotation of the mandrel through a limit sensor.
Further, the programmable logic controller determines the time for changing the spindle from the first speed to the second speed according to the deceleration angle sent by the upper computer and the rotation angle of the starting point, wherein the second speed is less than the first speed.
And further, the programmable logic controller controls the moving mechanism of the steel coil trolley to drive the loading device to move horizontally, and controls the telescopic mechanism of the steel coil trolley to drive the loading device to move vertically.
According to the method for mounting and dismounting the metal sleeve, the programmable logic controller receives the instruction of the upper computer, the steel coil trolley and the loading device are controlled to move to corresponding positions, and the mandrel is controlled to adjust the diameter and rotate for a certain angle, so that the automatic mounting and dismounting operation of the metal sleeve is realized, the automatic mounting and dismounting precision of the metal sleeve is improved, the labor cost can be saved, and the productivity of a unit can be improved.
Drawings
FIG. 1 is a schematic structural view of a metal sleeve according to the present invention;
FIG. 2 is a schematic structural view of the coil car of the present invention;
FIG. 3 is a flow chart of a metal sleeve installation method of the present invention;
FIG. 4 is a flow chart of a method of disassembling a metal sleeve according to the present invention;
fig. 5 is a flowchart of a method of controlling the rotation of the unwinder mandrel according to the present invention.
Detailed Description
The structure, operation, and the like of the present invention will be further described with reference to the accompanying drawings.
The rotation control method of the mandrel of the uncoiling machine and the mounting and dismounting method of the metal sleeve are applied to the realization of the mounting and dismounting of the metal sleeve shown in the figure 1 by adopting the steel coil trolley shown in the figure 2.
The metal sleeve 1 shown in fig. 1 includes a plurality of arc-shaped liner plates 11 and elastic connecting members 12, and two adjacent arc-shaped liner plates 11 are connected by the elastic connecting members 12, so that each arc-shaped liner plate 11 can be opened or gathered along the radial direction of the metal sleeve 1, and the gap between two adjacent arc-shaped liner plates 11 can be increased or decreased. Wherein, under the effect of not receiving the external force, elastic connecting piece 12 exerts the power that is close to each other for two adjacent arc welts 11. The inner sides of the arc-shaped lining plates 11 are respectively provided with a plurality of positioning blocks 13 which play a role in preventing the metal sleeve 1 from sliding with the mandrel.
The uncoiler for mounting or dismounting the metal sleeve comprises a motor and a mandrel. Wherein. The mandrel is provided with a plurality of positioning grooves matched with the positioning blocks of the metal sleeve along the axial direction, and a protrusion can be arranged on the mandrel to be used as a starting point of the rotation of the mandrel. The motor and the mandrel are respectively connected with the reduction gearbox through gears, and the motor drives the mandrel to rotate through the reduction gearbox.
The coil car 3 shown in fig. 2 includes a base 31 with a moving mechanism 32, a telescopic mechanism 33 and a loading device 2, the loading device 2 is connected with the base 31 through the telescopic mechanism 33, the telescopic mechanism 33 is a hydraulic cylinder and can drive the loading device 2 to vertically move, and the moving mechanism 32 can drive the whole coil car 3 to horizontally move.
The loading device 2 is a cylindrical structure perpendicular to the telescopic mechanism 33, and a plurality of fixing blocks 21 are arranged on the inner wall of the loading device 2 along the circumferential direction and used for fixing the metal sleeve 1. Specifically, locate fixed block 21 through the space card between two adjacent arc welts 11 of metal sleeve 1, be fixed in loading attachment 2 with metal sleeve 1 on, because connect through elastic connector 12 between two adjacent arc welts 11, elastic connector 12 can exert the power that is close to each other for two adjacent arc welts 11, consequently, can make two adjacent arc welts 11 chucking fixed block 21, play good fixed action.
As shown in fig. 3, the installation method of a metal sleeve of the present invention includes the steps of:
s1.1, the programmable logic controller controls the loading device 2 loaded with the metal sleeve 1 to move to the loading position according to the target loading position sent by the upper computer, wherein the programmable logic controller controls the moving mechanism 32 of the steel coil trolley 3 to drive the loading device 2 to move horizontally, and controls the telescopic mechanism 33 of the steel coil trolley 3 to drive the loading device 2 to move vertically.
In an embodiment of the present invention, the plc may control the moving mechanism 32 to move through the rail to move the center point of the loading device 2 to the abscissa and the ordinate of the target loading position after comparing the abscissa and the ordinate of the current position of the center point of the loading device 2 with the abscissa and the ordinate of the target loading position.
In another embodiment of the present invention, the plc may further calculate the height to be raised of the loading device 2 according to the formula H-D after comparing the current height coordinate of the center point of the loading device 2 with the height coordinate of the target loading position (i.e. the height coordinate of the axis of the mandrel of the unwinder), where H is the height to be raised of the loading device 2, D is the height coordinate of the target loading position, and D is the current height coordinate of the axis of the loading device 2. In this embodiment, the height coordinate of the target loading position is 1450 mm.
S1.2, the programmable logic controller adjusts the diameter of the mandrel of the uncoiler to be equal to the target diameter according to the target diameter sent by the upper computer, specifically, the target diameter is smaller than the diameter of the metal sleeve 1, so that the mandrel can be easily inserted into the metal sleeve 1. In this embodiment, the target diameter may be a diameter value that places the mandrel in a contracted position, where the contracted position is the minimum position of the mandrel mechanical structure.
S1.3, controlling the mandrel to rotate until the positioning groove of the mandrel corresponds to the position of the positioning block 13 of the metal sleeve 1 according to the rotation instruction and the movement instruction of the upper computer by the programmable logic controller, and controlling the metal sleeve 1 to move axially along the mandrel until the mandrel is completely sleeved with the positioning block 13.
Specifically, the positioning groove of the mandrel corresponds to the positioning block 13 of the metal sleeve 1, that is, when the mandrel is inserted into the metal sleeve 1, the positioning groove is vertically opposite to the positioning block 13, so that the positioning block 13 can be inserted into the positioning groove. The method for controlling the position correspondence between the positioning groove of the mandrel and the positioning block 13 of the metal sleeve 1 may be that the circumferential angle of each positioning groove and the circumferential angle of each positioning block are determined by the programmable logic controller, the included angle between the positioning groove and the positioning block is calculated, and the positioning groove of the mandrel and the positioning block 13 of the metal sleeve 1 are made to correspond to each other by rotating the mandrel clockwise or counterclockwise by the corresponding included angle according to the calculation result.
In an embodiment of the present invention, the plc may control the moving mechanism 32 to move along the rail, so that the coil car 3 drives the loading device 2 to move, thereby controlling the metal sleeve 1 to move along the axial direction of the mandrel toward the direction close to the uncoiler, so that the metal sleeve 1 is completely sleeved on the mandrel.
S1.4, the programmable logic controller controls the diameter of the mandrel to increase according to an expansion instruction sent by the upper computer, so that the gap between two adjacent arc-shaped lining plates 11 of the metal sleeve 1 is increased and is separated from a fixed block 21 of the loading device 2, the outer wall of the mandrel is tightly attached to the inner wall of the metal sleeve 1, a positioning block 13 of the metal sleeve 1 is completely arranged inside a positioning groove of the mandrel, and sliding between the metal sleeve 1 and the mandrel is eliminated. At this time, the programmable logic controller can control the coil car 3 to drive the loading device 2 to move away from the uncoiler.
As shown in fig. 4, the method for disassembling a metal sleeve according to the present invention includes the following steps:
s2.1, the programmable logic controller adjusts the diameter of the mandrel of the uncoiler to be equal to the target diameter according to the target diameter sent by the upper computer, so that each arc-shaped lining plate 11 of the metal sleeve 1 is separated to a gap, the arc-shaped lining plate can be easily inserted into the fixing block 21, and the metal sleeve 1 can be easily inserted into the loading device 2. In this embodiment, the target diameter is sized to a diameter value that allows the diameter of the mandrel to be in an expanded position, wherein the expanded position is the maximum position of the mandrel mechanical structure.
And S2.2, controlling the loading device 2 to move to the unloading position by the programmable logic controller according to the target unloading position sent by the upper computer, wherein the programmable logic controller controls the moving mechanism 32 of the steel coil trolley 3 to drive the loading device 2 to move horizontally, and controls the telescopic mechanism 33 of the steel coil trolley 3 to drive the loading device 2 to move vertically.
In an embodiment of the present invention, the plc may control the moving mechanism 32 to move through the track to move the center point of the loading device 2 to the abscissa and the ordinate of the target unloading position after comparing the abscissa and the ordinate of the current position of the center point of the loading device 2 with the abscissa and the ordinate of the target unloading position.
In another embodiment of the present invention, the plc may further calculate the height to be raised of the loading device 2 according to the formula H-D after comparing the current height coordinate of the axis of the loading device 2 with the height coordinate of the target unloading position (i.e. the height coordinate of the axis of the mandrel of the unwinder), where H is the height to be raised of the loading device 2, D is the height coordinate of the target unloading position, and D is the current height coordinate of the axis of the loading device 2. In the present embodiment, the height coordinate of the target unloading position is 1450 mm.
And S2.3, controlling the mandrel to rotate until the gap between two adjacent arc-shaped lining plates 11 of the metal sleeve 1 corresponds to the position of the fixing block 21 of the loading device according to the rotation instruction and the movement instruction of the upper computer by the programmable logic controller, and controlling the loading device 2 to move axially along the mandrel until the loading device is completely sleeved on the metal sleeve 1.
In an embodiment of the present invention, the plc may control the moving mechanism 32 to move along the rail, so that the coil car 3 drives the loading device 2 to move, and the loading device 2 is completely sleeved on the metal sleeve 1, even if the center point of the loading device 2 coincides with the center point of the metal sleeve 1.
And S2.4, controlling the diameter of the mandrel to be reduced to a small gap between two adjacent arc-shaped lining plates 11 of the metal sleeve 1 and matching with a fixed block 21 of the clamping loading device 2 by the programmable logic controller according to a contraction instruction sent by the upper computer, and controlling the metal sleeve 1 to move axially along the mandrel until the metal sleeve is separated from the mandrel.
In an embodiment of the present invention, as shown in fig. 5, a method for controlling the rotation of a mandrel by a programmable logic controller comprises the steps of: :
and S3.1, the programmable logic controller receives a rotation instruction sent by the upper computer, controls a motor of the uncoiler to drive the mandrel to rotate, and when the rotation starts, because the position of a starting point arranged on the mandrel is not detected, the rotation angle of the mandrel cannot be calculated.
And S3.2, after the programmable logic controller detects the rotating initial point position of the mandrel, calculating the rotating angle of the initial point according to the rotating speed of the motor. Compared with the method for detecting the rotation angle of the mandrel by adopting two sensors (namely proximity switches) in the prior art, the method can accurately calculate the rotation angle of the starting point position and carry out positioning control on the mandrel by the rotation angle, and has higher control precision compared with a fuzzy control method for detecting by using the sensors in the prior art, so that the control precision meets the process requirement.
According to an embodiment of the invention, the programmable logic controller may detect a position of a start point of the rotation of the mandrel through the limit sensor, when the position of the start point rotates to a position opposite to the limit sensor, the limit sensor detects the position of the start point, and sends a signal for detecting the start point of the rotation of the mandrel to the programmable logic controller, at this time, the programmable logic controller starts to calculate a rotation angle of the start point relative to the position of the limit sensor, and takes the angle as the rotation angle of the start point.
According to another embodiment of the present invention, the programmable logic controller may determine the rotation angle of the starting point according to the number of pulses rotated by the motor, the gear ratio of the motor to the spindle, and the number of gears of the spindle. The rotation angle of the starting point position is set to be G _ POR _ POS, the number of pulses of the motor rotation is G _ POR _ POS _ C, the gear ratio of the motor to the mandrel is r, the gear number of the mandrel is set to be D _ POR _ RTC, the gear ratio r of the motor of the local unit to the mandrel is 0.1, the gear number D _ POR _ RTC of the mandrel is 256/ring, and therefore the calculation formula of the rotation angle G _ POR _ POS of the starting point position is as follows:
and S3.3, determining the time for stopping the rotation of the mandrel by the programmable logic controller according to the target angle and the rotation angle of the starting point sent by the upper computer. The programmable logic controller can compare the rotation angle of the starting point with the target angle, and when the rotation angle of the starting point is larger than the target angle, the programmable logic controller can control the mandrel to stop rotating. The target angle can be set to be 280-320 degrees according to the actual requirement of the unit.
According to an embodiment of the invention, the programmable logic controller may determine a time for the mandrel to change from the first speed rotation to the second speed rotation according to the deceleration angle sent by the upper computer and the rotation angle of the starting point, where the second speed is less than the first speed. The programmable logic controller can compare the rotation angle of the starting point with the deceleration angle, and when the rotation angle of the starting point is larger than the deceleration angle and smaller than the target angle, the programmable logic controller can control the motor to reduce the rotation speed, so that the spindle rotates at the first speed and the second speed, and the precision of controlling the spindle to rotate is improved. According to the actual requirement of the unit, the deceleration angle is 220-260 degrees, the rotation speed of the first speed is 4-6m/min, and the rotation speed of the second speed is 2-4 m/min.
According to the metal sleeve installation method provided by the embodiment of the invention, after the automatic installation program of the metal sleeve 1 is started, the programmable logic controller controls the steel coil trolley 3 to automatically drive the metal sleeve 1 to run to the target loading position, and the programmable logic controller controls the outer support of the uncoiler to be opened, so that the diameter of the mandrel is adjusted to be smaller than or equal to the target diameter. And then the programmable logic controller controls the mandrel to rotate until the positioning groove of the mandrel corresponds to the position of the positioning block 13 of the metal sleeve 1, and controls the steel coil trolley 3 to move towards the uncoiler until the central point of the metal sleeve 1 is coincident with the central point of the mandrel, and the operation is stopped. And finally, the programmable logic controller controls the mandrel to expand so as to separate the loading device 2 from the metal sleeve 1, so that the metal sleeve 1 is installed on the mandrel, and the programmable logic controller controls the coil car 3 to retreat the empty loading device 2 to the horizontal and vertical coordinates of the target installation position, lower the loading device 2 and retreat to the original position of the coil car 3.
Wherein, the height of the axis of the mandrel and the height of the axis of the metal sleeve 1 can have an error of +/-10-20 mm, and the distance between the target loading position and the most front position of the mandrel of the uncoiler can be 50-150 mm. In this embodiment, the height of the axis of the mandrel and the height of the axis of the metal sleeve 1 may have an error of ± 15mm, and the distance between the target loading position and the most forward position of the uncoiler mandrel may be 100 mm.
According to the metal sleeve dismounting method provided by the embodiment of the invention, after the automatic installation program of the metal sleeve 1 is started, the programmable logic controller controls the steel coil trolley 3 to automatically drive the metal sleeve 1 to move to the target unloading position, and the programmable logic controller controls the outer support of the uncoiler to be opened, so that the diameter of the mandrel is adjusted to be larger than or equal to the target diameter. And then the programmable logic controller controls the mandrel to rotate until the gap between two adjacent arc-shaped lining plates 11 of the metal sleeve 1 corresponds to the position of the fixed block 21 of the transfer device, and controls the steel coil trolley 3 to move towards the uncoiler and stop running until the central point of the metal sleeve 1 is coincident with the central point of the loading device 2. And finally, the programmable logic controller controls the mandrel to shrink, so that the gap between two adjacent arc-shaped lining plates 11 of the metal sleeve 1 is small and is matched with and clamped with a fixed block 21 of the loading device 2, the metal sleeve 1 is fixed on the loading device 2, the programmable logic controller controls the coil car 3 to retreat the loading device 2 loaded with the metal sleeve 1 to the horizontal and vertical coordinates of the target position, the loading device 2 is lowered, and the coil car 3 is retreated to the original position.
Wherein, the height of the axis of the loading device 2 and the height of the axis of the metal sleeve 1 can have an error of +/-10-20 mm, and the distance between the target loading position and the most front position of the mandrel of the uncoiler can be 50-150 mm. In this embodiment, the height of the axis of the loading device 2 and the height of the axis of the metal sleeve 1 may have an error of ± 15mm, and the distance between the target loading position and the most forward position of the uncoiler mandrel may be 100 mm.
In conclusion, the metal sleeve mounting and dismounting method can automatically mount and dismount the metal sleeve, can ensure that the cold rolling unit still keeps stronger production continuity and higher production efficiency under the condition of continuously replacing the inner diameter of the steel coil, meets the precision requirements of the process and control, and has good effect on improving the production environment and the labor intensity of operators.
The foregoing is merely illustrative of the present invention, and it will be appreciated by those skilled in the art that various modifications may be made without departing from the principles of the invention, and the scope of the invention is to be determined accordingly.
Claims (8)
1. A method for mounting a metal sleeve on a mandrel of an uncoiler, comprising the steps of:
s1.1, controlling a loading device loaded with the metal sleeve to move to a loading position by a programmable logic controller according to a target loading position sent by an upper computer;
s1.2, the programmable logic controller adjusts the diameter of the mandrel to be equal to the target diameter according to the target diameter sent by the upper computer;
s1.3, controlling the mandrel to rotate until the positioning groove of the mandrel corresponds to the positioning block of the metal sleeve according to a rotation instruction and a movement instruction of the upper computer by the programmable logic controller, and controlling the metal sleeve to axially move along the mandrel until the metal sleeve is completely sleeved on the mandrel;
s1.4, the programmable logic controller controls the diameter of the mandrel to increase according to an expansion instruction sent by the upper computer, so that a gap between two adjacent arc-shaped lining plates of the metal sleeve is increased and is separated from a fixed block of the loading device; wherein the content of the first and second substances,
the method for controlling the mandrel to rotate by the programmable logic controller comprises the following steps: s3.1, the programmable logic controller receives a rotation instruction sent by the upper computer and controls a motor of the uncoiler to drive the mandrel to rotate; s3.2, after the programmable logic controller detects the rotating initial point position of the mandrel, calculating the rotating angle of the initial point according to the rotating speed of the motor; and S3.3, determining the time for the mandrel to stop rotating by the programmable logic controller according to the target angle sent by the upper computer and the rotating angle of the starting point.
2. The method of installing a metal sleeve of claim 1 further comprising said programmable logic controller detecting a start point position of said mandrel rotation via a limit sensor.
3. The method of installing a metal sleeve of claim 1, further comprising the step of determining, by the programmable logic controller, a time for the mandrel to change from a first speed of rotation to a second speed of rotation, the second speed being less than the first speed, based on the deceleration angle sent by the host computer and the rotation angle of the starting point.
4. The method for installing a metal sleeve according to any one of claims 1 to 3, further comprising the step of controlling a moving mechanism of a coil car to drive the loading device to move horizontally by the programmable logic controller, and controlling a telescopic mechanism of the coil car to drive the loading device to move vertically.
5. A method of removing a metal sleeve from a mandrel of an unwinder, comprising the steps of:
s2.1, adjusting the diameter of the mandrel to be equal to the target diameter by a programmable logic controller according to the target diameter sent by an upper computer, and separating the arc lining plates of the metal sleeve;
s2.2, the programmable logic controller controls the loading device to move to the unloading position according to the target unloading position sent by the upper computer;
s2.3, controlling the mandrel to rotate until a gap between two adjacent arc-shaped lining plates of the metal sleeve corresponds to the position of a fixing block of the loading device according to a rotation instruction and a movement instruction of the upper computer by the programmable logic controller, and controlling the loading device to axially move along the mandrel until the loading device is completely sleeved on the metal sleeve;
s2.4, controlling the diameter of the mandrel to be reduced to reduce the gap between two adjacent arc-shaped lining plates of the metal sleeve according to a contraction instruction sent by the upper computer by the programmable logic controller, and controlling the metal sleeve to axially move along the mandrel until the metal sleeve is separated from the mandrel after the metal sleeve is matched with and clamped with a fixed block of the loading device; wherein the content of the first and second substances,
the method for controlling the mandrel to rotate by the programmable logic controller comprises the following steps:
s3.1, the programmable logic controller receives a rotation instruction sent by the upper computer and controls a motor of the uncoiler to drive the mandrel to rotate; s3.2, after the programmable logic controller detects the rotating initial point position of the mandrel, calculating the rotating angle of the initial point according to the rotating speed of the motor; and S3.3, determining the time for the mandrel to stop rotating by the programmable logic controller according to the target angle sent by the upper computer and the rotating angle of the starting point.
6. The method of removing a metal sleeve of claim 5 further including said programmable logic controller detecting a start point position of said mandrel rotation via a limit sensor.
7. The method of removing a metal sleeve of claim 5, further comprising the step of determining, by the programmable logic controller, a time for changing the rotation of the mandrel from a first speed to a second speed based on the deceleration angle sent by the host computer and the rotation angle of the starting point, wherein the second speed is less than the first speed.
8. The method for disassembling a metal sleeve according to any one of claims 6-7, further comprising the step of controlling a moving mechanism of a coil car to move the loading device horizontally by the PLC, and controlling a telescopic mechanism of the coil car to move the loading device vertically.
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| CN201710188549.1A CN108663981B (en) | 2017-03-27 | 2017-03-27 | Method for mounting and dismounting metal sleeve |
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| CN201710188549.1A CN108663981B (en) | 2017-03-27 | 2017-03-27 | Method for mounting and dismounting metal sleeve |
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| CN112706457A (en) * | 2020-12-31 | 2021-04-27 | 南京瑞鑫环保科技有限公司 | Double-channel bag making machine convenient for replacing winding drum |
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| CN2403757Y (en) * | 1999-11-12 | 2000-11-01 | 武汉钢铁(集团)公司 | Reducing elastic sleeve for reel of decoiler or recoiler |
| JP4608261B2 (en) * | 2004-07-29 | 2011-01-12 | 黒崎播磨株式会社 | Molten metal container outlet structure and sleeve exchange device for molten metal container outlet |
| CN2919321Y (en) * | 2006-05-24 | 2007-07-04 | 盐城市弹簧厂有限责任公司 | Electric control device of automatic spring coiling machine |
| BR112012007051A2 (en) * | 2009-10-15 | 2017-02-21 | Synthes Gmbh | device for retaining protective sleeves |
| DE102011008639B4 (en) * | 2011-01-15 | 2012-08-09 | Hpl-Neugnadenfelder Maschinenfabrik Gmbh | Winding sleeve for reeling strip-shaped products |
| CN102500648A (en) * | 2011-10-20 | 2012-06-20 | 苏州宝联重工股份有限公司 | Collapsible diameter increasing sleeve and method thereof |
| CN203592015U (en) * | 2013-11-28 | 2014-05-14 | 北京首钢建设集团有限公司 | Symmetrical spiral swellable sleeve |
| US9435685B2 (en) * | 2014-10-03 | 2016-09-06 | Hanwha Techwin Co., Ltd. | Part holding head assembly for chip mounting device |
| CN104570911A (en) * | 2014-12-30 | 2015-04-29 | 中天科技光纤有限公司 | Automatic control device and control method thereof for optical fiber screening |
| CN205363154U (en) * | 2015-12-16 | 2016-07-06 | 浙江龙盛薄板有限公司 | Cold rolling decoiler uide bushing prosthetic devices |
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