CN110817006B - Steel coil bundling system based on PLC control and control method thereof - Google Patents
Steel coil bundling system based on PLC control and control method thereof Download PDFInfo
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- CN110817006B CN110817006B CN201911291398.8A CN201911291398A CN110817006B CN 110817006 B CN110817006 B CN 110817006B CN 201911291398 A CN201911291398 A CN 201911291398A CN 110817006 B CN110817006 B CN 110817006B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 176
- 239000010959 steel Substances 0.000 title claims abstract description 176
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000001514 detection method Methods 0.000 claims abstract description 60
- 239000013072 incoming material Substances 0.000 claims description 17
- 230000000007 visual effect Effects 0.000 claims description 4
- 230000001174 ascending effect Effects 0.000 claims description 3
- 238000012800 visualization Methods 0.000 claims description 2
- 230000004630 mental health Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000009323 psychological health Effects 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B57/00—Automatic control, checking, warning, or safety devices
- B65B57/10—Automatic control, checking, warning, or safety devices responsive to absence, presence, abnormal feed, or misplacement of articles or materials to be packaged
- B65B57/14—Automatic control, checking, warning, or safety devices responsive to absence, presence, abnormal feed, or misplacement of articles or materials to be packaged and operating to control, or stop, the feed of articles or material to be packaged
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B13/00—Bundling articles
- B65B13/18—Details of, or auxiliary devices used in, bundling machines or bundling tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B27/00—Bundling particular articles presenting special problems using string, wire, or narrow tape or band; Baling fibrous material, e.g. peat, not otherwise provided for
- B65B27/06—Bundling coils of wire or like annular objects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B35/00—Supplying, feeding, arranging or orientating articles to be packaged
- B65B35/10—Feeding, e.g. conveying, single articles
- B65B35/22—Feeding, e.g. conveying, single articles by roller-ways
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B57/00—Automatic control, checking, warning, or safety devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
- B65B61/28—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for discharging completed packages from machines
Abstract
The invention discloses a steel coil bundling system based on PLC control and a control method thereof, wherein the steel coil bundling system comprises a control switch, a detection switch, a PLC controller, a left roller way, a right roller way, a left roller, a right roller, a lifting table, a bundling machine and a threading guide way; the left roller way and the right roller way are arranged side by side, the left roller way and the right roller way are arranged oppositely, the lifting platform is positioned below the left roller way and the right roller way, the threading guide way is positioned above the left roller way and the right roller way and higher than the left roller way and the right roller way, and the bundling machine is positioned on the side surface of the threading guide way; the input end of the PLC is connected with the control switch and the detection switch, and the output end of the PLC is respectively connected with the left roller way, the right roller way, the left roller, the right roller, the lifting table and the driving device of the bundling machine. The invention has the advantages that: the automatic control device has the advantages that the automatic control of the steel coil bundling operation is realized through the PLC, the steel coil bundling working efficiency is improved, workers are far away from the complex working condition of the bundling site, and physical and mental health is facilitated.
Description
Technical Field
The invention relates to a bundling system and a control method thereof, in particular to a steel coil bundling system based on PLC control and a control method thereof, belonging to the technical field of PLC control.
Background
The strip steel is a narrow and long steel plate manufactured by various steel rolling enterprises in order to adapt to the industrial production needs of various metal or mechanical products by different departments. The existing hot rolled strip process generally comprises: heating, primary dephosphorization, rough rolling, secondary dephosphorization, finish rolling, surface quality inspection, layer cooling, coiling, bundling, code spraying and plate blank coiling.
In the coiling stage, the strip steel is coiled by a coiling machine to form a strip steel coil. In the bundling stage, the coiled strip steel coil is loose and cannot be bundled directly, but the strip steel coil is first tightened, a tightening mode of rotating and extruding is adopted at present, then the strip steel is released to the circumferential surface of the strip steel coil by a bundling machine, and then the strip steel is tightened again, so that single-bundle bundling of the strip steel coil is completed.
At present, when each step in the single-bundle packing process of the strip steel coil is carried out, namely, the steps of rotation, tightening, bundling and the like are mostly carried out by adopting a mode of manually and sequentially operating equipment on site and gradually completing packing actions, so that the automation degree and the working efficiency are extremely low. Meanwhile, because the single-bundle packing site working condition of the strip steel coil is complex, the room temperature is high, scalding and scratching are easy to occur, and the physical and psychological health of workers is also not facilitated.
Disclosure of Invention
The invention aims to: aiming at the problems, the invention aims to provide a steel coil bundling system based on PLC control so as to realize PLC automatic control of a steel coil single-bundle bundling process.
The technical scheme is as follows: a steel coil bundling system based on PLC control comprises a control switch, a detection switch, a PLC controller, a left roller way, a right roller way, a left roller, a right roller, a lifting table, a bundling machine and a threading guide way; the left roller way and the right roller way are arranged side by side and are configured to convey and rotate steel coils, the left roller way and the right roller way are arranged oppositely and are configured to clamp the steel coils, the lifting table is positioned below the left roller way and the right roller way and is configured to jack up the steel coils, the threading guide way is positioned above the left roller way and the right roller way and is higher than the left roller way and the right roller way and is configured to encircle the steel coils, the bundling machine is positioned on the side surface of the threading guide way and is configured to release the steel coils to the inner ring of the threading guide way and to implement bundling of the steel coils; the input end of the PLC controller is connected with the control switch and the detection switch, the output end of the PLC controller is respectively connected with the driving devices of the left roller way, the right roller way, the left roller, the right roller, the lifting table and the bundling machine, the control switch is configured to start and close the PLC controller, and the detection switch is configured to detect the running states of the steel coil, the lifting table, the bundling machine and the steel belt.
The principle of the invention is as follows: the bundling equipment performs the actions of rotating, tightening and bundling of the steel coil, and comprises a left roller way and a right roller way which are driven by respective driving devices to rotate in the same direction so as to convey the steel coil, and the steel coil can be rotated in the opposite direction. The left side roller and the right side roller are driven by the respective driving devices to approach the steel coil from two sides, squeeze the side wall of the steel coil, gradually tighten the tail of the steel coil in the rotating process, and keep the steel coil at a preset position. After tightening, the driving device of the lifting table drives the lifting table to lift the steel coil from the left roller way and the right roller way to a bundling position, namely, the steel coil is lifted to a position surrounded by the threading guide way. Then, the bundling machine releases the steel belt to the inner ring of the threading guide way, and then the steel belt is driven by the driving device to advance to a position abutting against the side wall of the steel coil, and then the steel belt is tightened to finish bundling. The PLC controller controls the left roller way, the right roller way, the left roller, the right roller way, the lifting table and the driving device of the bundling machine according to the instruction input of the control switch and the detection switch, and comprises the forward rotation and the reverse rotation of the control left roller way and the right roller way, the forward rotation and the reverse rotation of the control left roller way, the right roller way and the bundling machine, and the ascending and the descending of the lifting table, so that the rotation, the tightening and the bundling actions of the steel coil are sequentially completed under the control of the PLC controller through the instruction input of the control switch and the detection switch.
Further, the control switches include a scram switch SB1, a start automatic switch SB2, a manual/automatic change-over switch SB3, a tail recognition switch SB4, a local/remote change-over switch SB5, a reset switch SB6, a left roller forward/reverse change-over switch SB7, a right roller forward/reverse change-over switch SB8, a right roller forward/reverse change-over switch SB9, a left roller forward/reverse change-over switch SB10, a lifter up/down change-over switch SB11, and a baler forward/reverse change-over switch SB12, which are respectively connected to input pins of the PLC controller.
Further, the detection switch comprises a steel coil incoming material detection switch SP1, a steel coil in-place detection switch SP2, a lifting table in-place detection switch, a bundling machine advancing in-place detection switch SP6, a bundling machine resetting detection switch SP7 and a steel belt in-place detection switch SP8, wherein the detection switches are respectively connected to an input pin of the PLC.
Further, the lifting platform in-place detection switch comprises a lifting platform origin detection switch SP3, a lifting platform lowest stop detection switch SP4 and a lifting platform highest stop detection switch SP5. The optimal position of the steel belt for bundling the steel coils is the middle position, meanwhile, the height sizes of the steel coils in different batches are different, the structure can preset bundling lifting positions according to the height sizes of the steel coils, and if the steel coils are positioned between the lowest position and the highest position of the lifting table, the bundling of the steel coils with the height sizes can be implemented.
Further, the steel coil incoming material detection switch SP1 is a correlation photoelectric tube, and the correlation photoelectric tube is disposed at the inlets of the left roller way and the right roller way and is configured to detect whether the steel coil is incoming.
Further, an indicator light is included and configured to display an operational status of the coil bundling system.
Further, the indicator lamp comprises a working indicator lamp HL1, a steel coil in-place indicator lamp HL2, a machine head rear limit indicator lamp HL3, an automatic in-place indicator lamp HL4 and a fault indicator lamp HL5, and the indicator lamps are respectively connected to output pins of the PLC.
Further, the device also comprises a relay which is configured to output control signals of the PLC controller to the driving devices of the left roller way, the right roller way, the left roller, the right roller, the lifting table and the bundling machine.
Further, the relays include a left roller forward relay KA1, a left roller reverse relay KA2, a right roller forward relay KA3, a right roller reverse relay KA4, a right roller forward relay KA5, a right roller backward relay KA6, a left roller forward relay KA7, a left roller backward relay KA8, a lifting table lifting relay KA9, a lifting table descending relay KA10, a bundling machine forward relay KA11, and a bundling machine backward relay KA12, which are respectively connected to output pins of the PLC controller.
Further, a touch screen is also included and configured to perform a visualization operation of the PLC controller.
Further, the driving devices adopted by the left roller way, the right roller way and the lifting table are motors, and the driving devices adopted by the left roller, the right roller and the bundling machine are cylinders.
Further, the detection switch is a proximity switch or a limit switch.
Further, an audible and visual alarm is included and configured to implement a fault alert.
In addition, the invention also provides a control method of the steel coil bundling system, which comprises the following steps:
s1, starting a system;
s2, detecting the incoming materials of the steel coil, if the incoming materials are not received, sending incoming material demands to an external roller way, and if the incoming materials are received, controlling the left roller way and the right roller way to rotate in the same direction through signals of a PLC (programmable logic controller), and conveying the steel coil;
s3, detecting the steel coil in place, and controlling the left roller way and the right roller way to reversely rotate through signals of the PLC when receiving in-place signals so as to enable the steel coil to rotate along the coiling direction of the steel coil, and simultaneously controlling the left roller and the right roller to advance through the signals so as to squeeze the side wall of the steel coil;
s4, the positions of the strip tails and the tightening and identification of the steel coil are performed, the steel coil is tightened after being rotated and extruded, and when the positions of the strip tails reach the preset positions, the left roller way and the right roller way are controlled to stop through signals of a PLC;
s5, lifting the steel coil and releasing the steel belt by the bundling machine, controlling the lifting table to lift the steel coil to a preset position through signals of the PLC controller, and simultaneously controlling the bundling machine to release the steel belt into the threading guide way;
s6, detecting the steel belt in place, and controlling the bundling machine to advance through a PLC controller signal when receiving the steel belt in place signal;
s7, the bundling machine advances to perform in-place detection and bundling, and when receiving an in-place advancing signal of the bundling machine, the bundling machine is controlled to tighten the steel belt through a signal of the PLC to finish bundling of the steel coil;
s8, resetting, after bundling is completed, controlling the bundling machine, the left roller and the right roller to retreat through signals of a PLC controller, descending the lifting table, and detecting reset signals of the bundling machine and the lifting table;
s9, sending out the steel coil, and after receiving a reset signal of the lifting platform, controlling the left roller way and the right roller way to rotate in the same direction through signals of the PLC controller, and sending out the steel coil;
s10, repeating the steps S1 to S9, and bundling the next steel coil.
The beneficial effects are that: compared with the prior art, the invention has the advantages that: the automatic control device has the advantages that the automatic control of the steel coil bundling operation is realized through the PLC, the steel coil bundling working efficiency is improved, workers are far away from the complex working condition of the bundling site, and physical and mental health is facilitated. Meanwhile, the system can be suitable for automatic bundling of steel coils with different height specifications, and has wide application range.
Drawings
Fig. 1 is a schematic perspective view of a baling apparatus of the present invention;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a schematic diagram of a PLC system;
FIG. 4 is a schematic diagram of a PLC system expansion module indicator light connection;
FIG. 5 is a schematic diagram of a relay connection for a PLC system expansion module;
fig. 6 is a control flow chart of the PLC system.
Detailed Description
The invention will be further elucidated with reference to the drawings and to specific embodiments, which are intended to illustrate the invention only and are not intended to limit the scope of the invention.
A steel coil bundling system based on PLC control, as shown in figures 1-3, comprises a control switch, a detection switch, a PLC controller, a left roller table 1, a right roller table 2, a left roller 3, a right roller 4, a lifting table 5, a bundling machine 6, a threading guide way 7, an indicator lamp, a relay, a touch screen and an audible and visual alarm device. The left roller way 1, the right roller way 2, the left roller 3, the right roller 4, the lifting table 5, the bundling machine 6 and the threading guide way 7 form bundling equipment.
As shown in fig. 1 and 2, the left and right roller tables 1 and 2 are arranged side by side and configured to transport and rotate steel coils. The left roller way 1 and the right roller way 2 are driven by respective driving devices to rotate in the same direction so as to convey the steel coil, and the left roller way 1 and the right roller way 2 rotate in the opposite direction so as to rotate the steel coil. For example, the left roller way 1 and the right roller way 2 are driven by respective driving devices to simultaneously rotate positively, so that steel coils can be conveyed. When the steel coil is to be rotated, the coiling direction of the steel coil is firstly judged, for example, when the coiling machine coils the steel coil, the steel coil rotates clockwise, and then the steel coil rotates along the coiling direction by driving the left roller way 1 to rotate forwards, the right roller way 2 to rotate reversely or the left roller way 1 to rotate forwards and the right roller way 2 to rotate forwards according to the arrangement direction of the steel coil.
The left side roller 3 and the right side roller 4 are disposed opposite to each other and configured to clamp the coil of steel. Namely, the left roller 3 and the right roller 4 are driven by the respective driving devices to approach the steel coil from two sides, squeeze the side walls of the steel coil, gradually tighten the tail of the steel coil in the process of rotating in the coiling direction, and keep the whole process of tightening the tail of the steel coil at a fixed position.
The lifting table 5 is located below the left roller way 1 and the right roller way 2 and is configured to jack up the steel coil. In this embodiment, when the lifting platform 5 does not work, it does not contact with the steel coil, i.e. its height is lower than the left roller way 1 and the right roller way 2, and when it is required to lift the steel coil, it can pass out from the respective gaps of the left roller way 1 and the right roller way 2, so as to lift the steel coil.
The threading guide way 7 is located above the left roller way 1 and the right roller way 2 and is higher than the left roller way 1 and the right roller way 2, and is configured to encircle the steel coil, in this embodiment, the threading guide way 7 is a rectangular frame which is horizontally arranged, rounded corners are arranged at four corners, and a notch is formed at one side of the threading guide way.
The baler 6 is located at the side of the threading guide 7 and is configured to release the steel strip toward the inner periphery of the threading guide and to perform baling of the steel coil. In this embodiment, the bundling machine 6 is located at the opening of the threading guide way 7, and when bundling is needed, the bundling machine can release the steel belt to the inner ring of the threading guide way 7 through the machine head on one side, and after the steel belt winds the inner ring of the threading guide way 7 for one circle, the steel belt is received through the machine head on the other side.
As shown in fig. 3, the input end of the PLC controller is connected with a control switch and a detection switch, and the output end is respectively connected with driving devices of bundling equipment such as a left roller table 1, a right roller table 2, a left roller 3, a right roller 4, a lifting table 5, a bundling machine 6 and the like through relays. In this embodiment, the control switch, the detection switch and the PLC controller are separately powered, the control switch is configured to start and close the PLC controller, and the detection switch is configured to detect the operation states of the steel coil, the lifting table 5, the bundling machine 6 and the steel strip.
At the input, as shown in fig. 4 and 5:
in this embodiment, the control switch includes a scram switch SB1 correspondingly installed on the input pin I0.0 of the PLC controller for controlling the scram of the system. The automatic start switch SB2 is correspondingly arranged on an input pin I0.1 of the PLC and is used for controlling the start of the system. The automatic switching control system also comprises a manual/automatic change-over switch SB3, wherein the automatic mode is correspondingly arranged on an input pin I0.2 of the PLC controller, and the manual mode is correspondingly arranged on the input pin I0.3 of the PLC controller and is used for controlling the system to switch between the manual mode and the automatic mode. The device also comprises a strip tail identification switch SB4 which is correspondingly arranged on an input pin I0.4 of the PLC and used for identifying the tail of the steel strip. The local/remote change-over switch SB5 is correspondingly arranged on the input pin I0.5 of the PLC controller and is used for controlling the system to switch between a local control mode and a remote control mode. The reset switch SB6 is correspondingly arranged on the input pin I0.6 of the PLC controller, and the reset is completed by the control system. The device further comprises a left roller way forward/reverse conversion switch SB7, wherein the left roller way forward is correspondingly arranged on an input pin I2.0 of the PLC controller and used for controlling the left roller way to forward rotate, and the left roller way reverse is correspondingly arranged on an input pin I2.1 of the PLC controller and used for controlling the left roller way to reverse rotate. The device further comprises a right roller way forward/reverse conversion switch SB8, wherein the right roller way forward is correspondingly arranged on an input pin I2.2 of the PLC controller and used for controlling the right roller way to forward rotate, and the right roller way reverse is correspondingly arranged on an input pin I2.3 of the PLC controller and used for controlling the right roller way to reverse rotate. The device also comprises a right roller advancing/retreating change-over switch SB9, wherein the right roller advancing is correspondingly selected to be arranged on an input pin I2.4 of the PLC controller and used for controlling the right roller to advance, and the right roller retreating is correspondingly selected to be arranged on an input pin I2.5 of the PLC controller and used for controlling the right roller to retreat. The device also comprises a left roller advancing/backing change-over switch SB10, wherein the left roller advancing is correspondingly selected to be arranged on an input pin I2.6 of the PLC controller and used for controlling the left roller to advance, and the left roller backing is correspondingly selected to be arranged on an input pin I2.7 of the PLC controller and used for controlling the left roller backing. The lifting platform lifting/descending transfer switch SB11 is also included, wherein the lifting platform lifting is correspondingly arranged on the input pin I3.0 of the PLC controller and used for controlling the lifting platform to ascend, and the lifting platform descending is correspondingly arranged on the input pin I3.1 of the PLC controller and used for controlling the lifting platform to descend. The automatic bundling machine further comprises a bundling machine advancing/retreating change-over switch SB12, wherein the bundling machine advancing is correspondingly arranged on an input pin I3.2 of the PLC and used for controlling the bundling machine to advance, and the bundling machine retreating is correspondingly arranged on an input pin I3.3 of the PLC and used for controlling the bundling machine to retreat.
In this embodiment, the detection switch includes a steel coil feeding detection switch SP1, which is correspondingly installed on an input pin I1.0 of the PLC controller, and is used for detecting whether the steel coil feeding exists at the entrance of the left roller way 1 and the right roller way 2. The steel coil on-site detection device also comprises a steel coil on-site detection switch SP2 which is correspondingly arranged on an input pin I1.1 of the PLC and used for detecting whether the steel coil is conveyed to a preset tightening position through the left roller way 1 and the right roller way 2. The lifting platform origin detection switch SP3 is correspondingly arranged on the input pin I1.2 of the PLC and used for detecting whether the lifting platform is restored to the original position or not. The lifting platform lowest stop position detection switch SP4 is correspondingly arranged on the input pin I1.3 of the PLC and used for lowest position limit detection of the lifting platform. The lifting platform highest stop position detection switch SP5 is correspondingly arranged on the input pin I1.4 of the PLC and used for highest position limit detection of the lifting platform. The automatic tightening machine further comprises a bundling machine advancing position detection switch SP6 which is correspondingly arranged on an input pin I1.5 of the PLC and used for detecting whether the bundling machine is advanced to a preset station for tightening the steel belt. The automatic resetting device also comprises a bundling machine resetting detection switch SP7 which is correspondingly arranged on an input pin I1.6 of the PLC and used for detecting whether the bundling machine is backed up to be restored to the notch of the threading guide way. The steel belt in-place detection switch SP8 is correspondingly arranged on an input pin I1.7 of the PLC and is used for detecting whether the steel belt is wound around the inner ring of the belt threading guide way 7 for one circle. In this embodiment, the steel coil incoming material detection switch SP1 is a correlation photoelectric tube, and the correlation photoelectric tube is disposed at the entrance of the left roller way 1 and the right roller way 2, and can detect through photoelectric signals when the steel coil incoming material exists.
In this embodiment, the input pins of the PLC controller include spare pins I0.7, I3.4 to I3.7 in addition to the above.
At the output, as shown in fig. 4 and 5:
in this embodiment, the indicator lamp is mounted on a remote operation panel of a worker, specifically includes a working indicator lamp HL1, and is correspondingly mounted on an output pin Q1.0 of the PLC controller, for indicating a normal working state. The device also comprises a steel coil on-site indicator lamp HL2 which is correspondingly arranged on an output pin Q1.1 of the PLC and used for indicating that the steel coil is in a tightening position. The machine head rear limit indicator lamp HL3 is correspondingly arranged on the output pin Q1.2 of the PLC and used for indicating that the bundling machine is positioned at the notch of the threading guide way. The automatic positioning indicator lamp HL4 is correspondingly arranged on the output pin Q1.3 of the PLC and is used for indicating that the system has automatic working conditions. The system also comprises a fault indicator lamp HL5 which is correspondingly arranged on the output pin Q1.3 of the PLC and used for indicating the fault of the system.
In this embodiment, the relay includes a left roller forward rotation relay KA1, which is correspondingly installed on an output pin Q2.0 of the PLC controller, for controlling the left roller forward rotation. The left roller way reversing relay KA2 is correspondingly arranged on an output pin Q2.1 of the PLC and used for controlling the left roller way to reverse. The device also comprises a right roller way forward rotation relay KA3 which is correspondingly arranged on an output pin Q2.2 of the PLC and used for controlling the right roller way to forward rotate. The device also comprises a right roller way reversing relay KA4 which is correspondingly arranged on an output pin Q2.3 of the PLC and used for controlling the right roller way to reverse. The device also comprises a right roller advancing relay KA5 which is correspondingly arranged on an output pin Q2.4 of the PLC and used for controlling the right roller to advance. The device also comprises a right roller retreating relay KA6 which is correspondingly arranged on an output pin Q2.5 of the PLC and used for controlling the right roller to retreat. The device also comprises a left roller advancing relay KA7 which is correspondingly arranged on an output pin Q2.6 of the PLC and used for controlling the left roller to advance. The device also comprises a left roller retreating relay KA8 which is correspondingly arranged on an output pin Q2.7 of the PLC and used for controlling the left roller to retreat. The lifting platform lifting relay KA9 is correspondingly arranged on the output pin Q3.0 of the PLC and used for controlling the lifting platform to lift. The lifting platform descending relay KA10 is correspondingly arranged on an output pin Q3.1 of the PLC and used for controlling the lifting platform to descend. The automatic bundling machine further comprises a bundling machine advancing relay KA11 which is correspondingly arranged on an output pin Q3.2 of the PLC and used for controlling the bundling machine to advance. The automatic reversing device also comprises a bundling machine reversing relay KA12 which is correspondingly arranged on an output pin Q3.3 of the PLC and used for controlling the bundling machine to reversing.
In this embodiment, the output pins of the PLC controller include spare pins Q0.0 to Q0.7 and Q3.4 to Q3.7 in addition to the above.
In this embodiment, the touch screen, like the indication lamp, is provided on the worker remote operation panel, which is configured to perform the visualized operation of the PLC controller. An audible and visual alarm is secured to the bundling apparatus and is configured to implement a fault alert.
In this embodiment, specifically, the driving devices adopted by the left roller table 1, the right roller table 2 and the lifting table 5 are motors, and the driving devices adopted by the left roller 3, the right roller 4 and the bundling machine 6 are cylinders.
The embodiment also discloses a control method of the steel coil bundling system based on PLC control, as shown in fig. 6, comprising the following steps:
s1, opening SB1, and starting the system.
S2, steel coil incoming material detection: SP1 detects the coil of strip incoming material, if do not feed, then sends the incoming material demand to outside roll table, if feed, then PLC controller respectively through KA1, KA3 signal control left roll table 1, right roll table 2 corotation, carries the coil of strip.
S3, steel coil in-situ detection: SP2 detects whether the coil of strip reaches the tightening position, when receiving the signal in place, then PLC control left roll table 1 corotation, right roll table 2 reversal through KA1, KA4 signal, makes the coil of strip rotate along its coiling direction, simultaneously, control left side roller 3, right side roller 4 through KA7, KA5 signal and advance, extrude the coil of strip lateral wall.
S4, the tail position and the steel coil tightening identification can be realized by adopting manual remote visual inspection, and when the steel coil is tightened after being rotated and extruded and then the tail position is rotated to a preset position, the preset position is preferably positioned at a position corresponding to one of the side rollers so as to keep extrusion of the tail by the side rollers and avoid loosening in the subsequent working procedures. And starting SB4, and controlling the left roller way 1 and the right roller way 2 to stop through signals of the PLC controller.
S5, steel coil lifting and steel belt release of the bundling machine: after the steel coil stops rotating, the PLC controls the lifting platform 5 to lift the steel coil to a preset position through KA9 signals, the preset position is preferably a position where the threading guide way is positioned in the middle of the steel coil, the position can be set through the height dimension of the steel coil input in advance, the preset position is positioned between the upper limit position and the lower limit position of the lifting platform, and overrun can be avoided through SP4 and SP5. Meanwhile, the PLC controller signals control the bundling machine 6 to release the steel belt into the threading guide path 7.
S6, detecting the steel belt in place, detecting whether the steel belt winds the inner ring of the threading guide path or not by the SP8, and controlling the bundling machine 6 to advance through KA11 signals by the PLC when receiving the steel belt in place signals.
S7, the bundling machine advances to the position for detection and bundling, the SP6 detects whether the bundling machine reaches a position close to the side wall of the steel coil, when receiving a signal that the bundling machine advances to the position, the PLC controls the bundling machine 6 to tighten the steel belt, and steel coil bundling is completed.
S8, resetting, after bundling is completed, the PLC controls the bundling machine 6, the left roller 3 and the right roller 4 to retreat through KA12, KA8 and KA6 signals, and whether the bundling machine 6 resets to the notch of the threading guide way 7 or not is detected through SP7 so as to carry out next threading. Meanwhile, the lifting platform 5 is controlled to descend through KA10 signals, and whether the lifting platform is restored to the original position is detected through SP 3.
And S9, sending out the steel coil, and after receiving the return signal of the lifting platform, controlling the left roller way 1 and the right roller way 2 to rotate positively by the PLC through the KA1 and KA3 signals, and sending out the steel coil.
S10, repeating the steps S1 to S9, and bundling the next steel coil.
In this embodiment, SB1 may be activated when a system failure requires scram. SB3 may be activated when it is necessary to switch between manual mode and automatic mode. SB5 may be activated when it is necessary to switch between the local mode and the remote mode. SB6 can be initiated when a reset is required. KA2 can be used to the coil of strip when blocking, cooperates KA4 to withdraw from the coil of strip.
Claims (14)
1. A coil of strip bundling system based on PLC control, its characterized in that: the device comprises a control switch, a detection switch, a PLC controller, a left roller way (1), a right roller way (2), a left roller (3), a right roller (4), a lifting table (5), a bundling machine (6) and a threading guide way (7); the left roller way (1) and the right roller way (2) are arranged side by side and are configured to convey and rotate steel coils, the left roller way (3) and the right roller way (4) are arranged oppositely and are configured to clamp the steel coils, the lifting table (5) is positioned below the left roller way (1) and the right roller way (2) and is configured to jack up the steel coils, the threading guide way (7) is positioned above the left roller way (1) and the right roller way (2) and is higher than the left roller way (1) and the right roller way (2) and is configured to encircle the steel coils, the bundling machine (6) is positioned on the side surface of the threading guide way (7) and is configured to release the steel coils to the inner ring of the threading guide way and to bundle the steel coils; the input end of the PLC controller is connected with the control switch and the detection switch, the output end of the PLC controller is respectively connected with the driving devices of the left roller way (1), the right roller way (2), the left roller (3), the right roller (4), the lifting table (5) and the bundling machine (6), the control switch is configured to start and close the PLC controller, and the detection switch is configured to detect the running states of the steel coil, the lifting table (5), the bundling machine (6) and the steel belt.
2. The coil bundling system of claim 1, wherein: the control switches comprise a scram switch SB1, a starting automatic switch SB2, a manual/automatic change-over switch SB3, a tail identification switch SB4, a local/remote change-over switch SB5, a reset switch SB6, a left roller way forward/reverse change-over switch SB7, a right roller way forward/reverse change-over switch SB8, a right roller forward/reverse change-over switch SB9, a left roller forward/reverse change-over switch SB10, a lifting platform ascending/descending change-over switch SB11 and a bundling machine forward/reverse change-over switch SB12, wherein the control switches are respectively connected to input pins of the PLC.
3. The coil bundling system of claim 1, wherein: the detection switch comprises a steel coil incoming material detection switch SP1, a steel coil in-place detection switch SP2, a lifting platform in-place detection switch, a bundling machine advancing in-place detection switch SP6, a bundling machine resetting detection switch SP7 and a steel belt in-place detection switch SP8, wherein the detection switches are respectively connected to an input pin of the PLC.
4. The coil bundling system as in claim 3, wherein: the lifting platform in-place detection switch comprises a lifting platform origin detection switch SP3, a lifting platform lowest stop detection switch SP4 and a lifting platform highest stop detection switch SP5.
5. The coil bundling system as in claim 3, wherein: the steel coil incoming material detection switch SP1 is a correlation photoelectric tube, and the correlation photoelectric tube is arranged at the inlets of the left roller way (1) and the right roller way (2) and is configured to detect whether the steel coil is incoming or not.
6. The coil bundling system of claim 1, wherein: and an indicator light configured to display an operational status of the coil bundling system.
7. The coil bundling system as claimed in claim 6, wherein: the indicating lamps comprise a working indicating lamp HL1, a steel coil in-place indicating lamp HL2, a machine head rear limit indicating lamp HL3, an automatic in-place indicating lamp HL4 and a fault indicating lamp HL5, and the indicating lamps are respectively connected to output pins of the PLC.
8. The coil bundling system of claim 1, wherein: the automatic bundling machine further comprises a relay which is configured to output control signals of the PLC to driving devices of the left roller way (1), the right roller way (2), the left roller (3), the right roller (4), the lifting table (5) and the bundling machine (6).
9. The coil bundling system as claimed in claim 8, wherein: the relays comprise a left roller way forward rotating relay KA1, a left roller way reverse rotating relay KA2, a right roller way forward rotating relay KA3, a right roller way reverse rotating relay KA4, a right roller forward rotating relay KA5, a right roller backward rotating relay KA6, a left roller forward rotating relay KA7, a left roller backward rotating relay KA8, a lifting platform ascending relay KA9, a lifting platform descending relay KA10, a bundling machine forward rotating relay KA11 and a bundling machine backward rotating relay KA12, wherein the relays are respectively connected to output pins of the PLC.
10. The coil bundling system of claim 1, wherein: also included is a touch screen configured to perform a visualization operation of the PLC controller.
11. The coil bundling system of claim 1, wherein: the driving devices adopted by the left roller way (1), the right roller way (2) and the lifting table (5) are motors, and the driving devices adopted by the left roller (3), the right roller (4) and the bundling machine (6) are cylinders.
12. The coil bundling system of claim 1, wherein: the detection switch is a proximity switch or a limit switch.
13. The coil bundling system of claim 1, wherein: an audible and visual alarm is also included and is configured to implement a fault alert.
14. A control method of a steel coil bundling system based on PLC control comprises the following steps:
s1, starting a system;
s2, detecting the incoming materials of the steel coil, if the incoming materials are not received, sending incoming material demands to an external roller way, and if the incoming materials are received, controlling the left roller way (1) and the right roller way (2) to rotate in the same direction through signals of a PLC (programmable logic controller), and conveying the steel coil;
s3, detecting the steel coil in place, when an in-place signal is received, controlling the left roller way (1) and the right roller way (2) to reversely rotate through signals of the PLC to enable the steel coil to rotate along the coiling direction of the steel coil, and simultaneously controlling the left roller (3) and the right roller (4) to advance through signals to squeeze the side wall of the steel coil;
s4, the positions of the strip tails and the tightening and identification of the steel coil are performed, the steel coil is tightened after being rotated and extruded, and when the positions of the strip tails reach the preset positions, the left roller way (1) and the right roller way (2) are controlled to stop through signals of a PLC;
s5, lifting the steel coil and releasing the steel belt by the bundling machine, controlling the lifting table (5) to lift the steel coil to a preset position through signals of the PLC, and simultaneously controlling the bundling machine (6) to release the steel belt into the threading guide way (7);
s6, detecting the steel belt in place, and controlling the bundling machine (6) to advance through a PLC controller signal when receiving the steel belt in place signal;
s7, the bundling machine advances to perform in-place detection and bundling, and when receiving an in-place advancing signal of the bundling machine, the bundling machine (6) is controlled to tighten the steel belt through a signal of the PLC to finish bundling of the steel coil;
s8, resetting, after bundling is completed, controlling the bundling machine (6), the left roller (3) and the right roller (4) to retreat through signals of a PLC, descending the lifting table (5), and detecting reset signals of the bundling machine (6) and the lifting table (5);
s9, sending out the steel coil, and after receiving a reset signal of the lifting platform, controlling the left roller way (1) and the right roller way (2) to rotate in the same direction through signals of the PLC controller to send out the steel coil;
s10, repeating the steps S1 to S9, and bundling the next steel coil.
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