CN113879757A - Gypsum board equipment positioning control method and device - Google Patents
Gypsum board equipment positioning control method and device Download PDFInfo
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- CN113879757A CN113879757A CN202111119682.4A CN202111119682A CN113879757A CN 113879757 A CN113879757 A CN 113879757A CN 202111119682 A CN202111119682 A CN 202111119682A CN 113879757 A CN113879757 A CN 113879757A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G13/00—Roller-ways
- B65G13/11—Roller frames
- B65G13/12—Roller frames adjustable
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G13/00—Roller-ways
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Mechanical Engineering (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a gypsum board equipment positioning control method and a gypsum board equipment positioning control device, wherein the number of drying layers of a dryer for drying is changed, and a PLC (programmable logic controller) processing system determines the required lifting height of a distribution bridge according to a functional relation between the lifting height of the distribution bridge and the height of the drying layers; the PLC processing system drives a lifting motor of the distribution bridge to adjust the plate feeding height of the distribution bridge, and the current total height position of the distribution bridge is monitored twice by utilizing an encoder and a laser sensor; and the PLC processing system regulates and controls the working state of the frequency converter according to the comparison result of the current total height position and the required lifting height. The invention realizes the self-system detection work of closed-loop automation through a dynamic positioning mode, improves the positioning control precision through continuous self-circulation of fault self-detection operation, has quick response and high control precision in the control process, is more intelligent in control, and can effectively solve the problem generated by positioning control by using the proximity switch.
Description
Technical Field
The invention relates to the technical field of gypsum board production lines, in particular to a gypsum board equipment positioning control method and device.
Background
The distribution bridge, as the name implies, is used to distribute the plasterboards to the different drying levels of the dryer, and it is common practice to add a lifting mechanism in the middle of the distribution bridge, rotating the distribution bridge about its ends, so as to vary the height of the end of the distribution bridge close to the dryer, in order to achieve a height position at which the distribution bridge is lifted to deliver the plasterboards. The inlet of each layer of each dryer is smaller and is only slightly larger than the thickness of the gypsum board, so the height position precision of the distribution bridge driven by the lifting motor is very important for the drying work of the gypsum board.
The existing distribution bridge lifting location depends on a proximity switch fixedly installed on each dry layer, when the proximity switch detects a baffle or a roller way at the end part of the distribution bridge, the system regulates and controls the distribution bridge to stop the lifting work of the distribution bridge, but the proximity switch is easy to interfere and damage, and the location precision is not high enough.
Disclosure of Invention
The invention aims to provide a gypsum board equipment positioning control method and device, and aims to solve the technical problems that in the prior art, calculation of the lifting height of a distribution bridge by using a proximity switch is easy to interfere and damage, and the positioning accuracy is not high enough.
In order to solve the technical problems, the invention specifically provides the following technical scheme:
a gypsum board equipment positioning control device, comprising:
the PLC processing system is used for receiving the height position information of the distribution bridge and regulating and controlling the execution action of the servo element;
the frequency converter is used for driving a lifting motor of the distribution bridge to rotate so as to regulate and control the inclination angle of the distribution bridge;
the encoder is arranged on a rotating shaft of the lifting motor, generates a pulse number every time the rotating shaft of the lifting motor rotates one circle and is used for calculating the number of rotating circles of the lifting motor;
the utility model discloses a distribution bridge, including the distribution bridge, the encoder, the converter with the encoder, the encoder is connected with PLC processing system electric connection, PLC processing system output control instruction starts the converter, the converter drives lifting motor is rotatory, just the encoder is followed lifting motor is rotatory and produce and show lifting motor rotates the number of pulses of number of turns, PLC processing system receives the number of pulses and will the number of pulses converts the high position of distribution bridge, PLC processing system will high position contrasts with preset's dry layer height and regulates and control according to the contrast result the converter is right in order to realize right lifting motor's closed loop fault self-checking control.
As a preferable scheme of the present invention, the present invention further includes a control unit in communication connection with the PLC processing system and the frequency converter, the PLC processing system outputs a control instruction and sends the control instruction to the control unit, the control unit controls the frequency converter to drive the lifting motor to rotate, the encoder rotates along with the lifting motor and generates a pulse number indicating the number of turns of the lifting motor, the control unit receives the pulse number and converts the pulse number into a height position of the distribution bridge, and the control unit compares the height position with a preset dry layer height and adjusts and controls the frequency converter according to a comparison result, so as to realize a self-checking control of a closed-loop fault of the lifting motor.
As a preferred scheme of the invention, the system further comprises a laser ranging sensor installed below the end part of the distribution bridge close to the dryer, wherein the laser ranging sensor is used for detecting a distance value between a roller way at the end part of the distribution bridge and the installation position of the laser ranging sensor, and height values from the distribution bridge to different drying layers are prestored in the PLC processing system;
the PLC processing system measures the initial height of the distribution bridge in a horizontal state according to an output signal of the laser ranging sensor, the PLC processing system conducts superposition statistics on the initial position and the height position converted by the pulse number to obtain the height of the end portion, close to the dryer, of the distribution bridge, and the PLC processing system regulates and controls the working of the frequency converter according to the comparison result of the height of the end portion and the height of a preset drying layer.
As a preferred aspect of the present invention, the PLC processing system calculates a lifting height of a lifting motor of the distribution bridge through output signals of the laser ranging sensor and the encoder, and determines whether the lifting motor and the encoder have a fault by simultaneously comparing the two calculated lifting heights, and determines stability of the distribution bridge in adjusting a tilt height.
As a preferred aspect of the present invention, when the lifting motor of the distribution bridge works, the PLC processing system measures the tilt height H of the distribution bridge in a tilt state by using the laser ranging sensor;
wherein, H is Ct/, C is the transmission speed of the laser in the air, and t is the time difference between the laser ranging sensor and the laser receiving;
the PLC processing system measures the initial height H of the distribution bridge in a horizontal state according to the laser ranging sensor, and when a lifting motor of the distribution bridge works, the PLC processing system measures the inclination height H' of the distribution bridge in an inclined state by using the pulse number output by the encoder;
h is the sum of the initial height of the roller way when the distribution bridge is in a horizontal state, the diameter of the roller way and the thickness of a transmission belt of the distribution bridge, and Q is the vertical height of the pulse number conversion of the encoder.
As a preferred aspect of the present invention, the dry layer height is a height between each dry layer of the dryer and the laser ranging sensor mounting plane, the PLC processing system creates a functional relationship between the tilt height of the distribution bridge and the dry layer height, and determines the tilt height of the distribution bridge according to the required dry layer height.
As a preferable scheme of the invention, the distribution bridge is sequentially divided into a primary roller set and a secondary roller set from far to near according to the distance from the dryer, a lifting assembly for driving the secondary roller set to incline is arranged at the center of the secondary roller set, the primary roller set is connected with the secondary roller set end to end, first sliding grooves are arranged on two sides of the tail end of a support of the primary roller set, extension frame plates distributed on the outer side of the support of the primary roller set are arranged on two sides of the head end of the support of the secondary roller set, a shifting rod inserted in the first sliding grooves is arranged at the end part of the extension frame plates, and the shifting rod is horizontally moved in a limiting mode through the first sliding grooves to compensate the horizontal distance between the secondary roller set and an inlet of the dryer when the secondary roller set rotates.
As a preferable scheme of the invention, the end part of the secondary roller set close to the dryer is provided with a guide roller set, a frame of the guide roller set is provided with a cutting hole groove, the outer surfaces of two sides of the secondary roller set are provided with limit rods for limiting the rotation of the guide roller set, the surface of the dryer facing the secondary roller set is provided with a routing hole groove, a horizontal connecting rod linearly moving along the routing hole groove is movably arranged in the routing hole groove and is clamped on a roller way of the guide roller set, the horizontal connecting rod is used for pressing a roller of the guide roller set and the roller way at the tail end of the secondary roller set to be positioned on the same horizontal plane, and the horizontal connecting rod pulls the frame of the guide roller set to linearly move along the cutting hole groove through the limit rods when the secondary roller set rotates so as to compensate the horizontal distance between the secondary roller set and an inlet of the dryer when the secondary roller set rotates, and the laser ranging sensor is ensured to always monitor the roller way height of the guide roller set.
In order to solve the above technical problems, the present invention further provides the following technical solutions: a control method of a gypsum board equipment positioning control device comprises the following steps:
step 100, changing the number of drying layers of a drying machine for drying, and determining the required lifting height of a distribution bridge by a PLC (programmable logic controller) processing system according to a functional relation between the lifting height of the distribution bridge and the height of the drying layers;
200, driving a lifting motor of a distribution bridge by the PLC processing system to adjust the plate feeding height of the distribution bridge, and monitoring the current total height position twice by using an encoder and a laser sensor;
and 300, regulating and controlling the working state of the frequency converter by the PLC processing system according to the comparison result of the current total height position and the required lifting height.
As a preferred aspect of the present invention, the encoder is mounted on an output shaft of a lifting motor of the distribution bridge, and is configured to determine an adjustment height of the distribution bridge by counting the number of rotation turns of the output shaft of the lifting motor, and the PLC processing system divides the number of pulses output by the encoder to the lifting motor in different rotation directions into a positive number and a negative number, and the PLC processing system converts the number of pulses accumulated by the encoder into an accumulated height position of the distribution bridge;
the laser sensor is installed below the end part, close to the dryer, of the distribution bridge and used for monitoring the height position of the end part of the distribution bridge, the PLC processing system receives output signals of the laser sensor and the pulse number output by the encoder at the same time and converts the output signals into the current total height position of the distribution bridge and the accumulated height position of the encoder for multiple lifting operations, and the PLC processing system adjusts the conversion formula of the encoder and the stability of the lifting operation of the distribution bridge by comparing the difference value of the current total height position and the accumulated height position.
Compared with the prior art, the invention has the following beneficial effects:
the invention realizes the self-system detection work of closed-loop automation through the dynamic positioning mode, improves the positioning control precision through the continuous self-circulation of the fault self-detection operation, has quick response in the control process, high control precision and more intellectualization in control, and can effectively solve the problem caused by the positioning control by using the proximity switch.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
Fig. 1 is a block diagram of an encoder positioning control system according to embodiment 1 of the present invention;
fig. 2 is a block diagram of a structure of a control unit independent control system according to embodiment 2 of the present invention;
fig. 3 is a block diagram of a positioning control system of a laser ranging sensor according to embodiment 3 of the present invention;
fig. 4 is a block diagram of a structure of a control unit independent control system according to embodiment 3 of the present invention;
fig. 5 is a schematic structural diagram of a dual positioning control system according to embodiment 4 of the present invention;
fig. 6 is a schematic structural diagram of a dual-positioning independent control system according to embodiment 5 of the present invention;
FIG. 7 is a schematic top view of a distribution bridge according to embodiment 4 of the present invention
Fig. 8 is a flowchart illustrating a positioning control method according to embodiment 6 of the present invention.
The reference numerals in the drawings denote the following, respectively:
1-a PLC processing system; 2-a frequency converter; 3-an encoder; 4-a control unit; 5-laser ranging sensor; 6-a secondary roller set; 7-a secondary set of rollers; 8-a first sliding groove; 9-extending the frame plate; 10-a displacement rod; 11-a guide roller set; 12-cutting a hole slot; 13-a limiting rod; 14-a wiring hole groove; 15-horizontal link.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
As shown in FIG. 1, the invention discloses a gypsum board equipment positioning control device, which is mainly used for positioning a distribution bridge at a height position close to a dryer so as to transfer gypsum boards to a drying layer with a required height.
As is known, the distribution bridge, as the name implies, is used to distribute the plasterboards to the different drying levels of the dryer, it is common practice to add a lifting mechanism in the middle of the distribution bridge, rotating the distribution bridge about its ends, so as to vary the height of the end of the distribution bridge close to the dryer, in order to achieve a height position at which the distribution bridge is lifted to deliver the plasterboards.
Specifically include PLC processing system 1, converter 2 and encoder 3, wherein:
the PLC processing system 1 is used for receiving height position information of the distribution bridge and regulating and controlling the execution action of the servo element; the frequency converter 2 is used for driving a lifting motor of the distribution bridge to rotate so as to regulate and control the inclination angle of the distribution bridge; the encoder 3 is installed on the rotating shaft of the lifting motor and generates a pulse number for calculating the number of rotating turns of the lifting motor when the rotating shaft of the lifting motor rotates for one circle.
Converter 2 and encoder 3 respectively with 1 electric connection of PLC processing system, 1 output control instruction of PLC processing system starts converter 2, converter 2 drives the elevator motor rotation, and encoder 3 follows the elevator motor rotation and produces the pulse number that represents the elevator motor and rotate the number of turns, PLC processing system 1 receives the pulse number and converts the pulse number into the high position of distribution bridge, PLC processing system 1 compares high position and preset's dry layer height and regulates and control converter 2 according to the contrast result, in order to realize the closed-loop control to elevator motor.
The number of working turns of elevator motor is positively correlated with the height position of distribution bridge tip, and encoder 3 counts the number of pulses of elevator motor's the number of working turns and divide into positive number and negative number, when elevator motor drove the high rise of distribution bridge, the output pulse number of encoder 3 was positive this moment, when elevator motor drove the high decline of distribution bridge, the output pulse number of encoder 3 was the negative number this moment, this embodiment calculates the current height position of distribution bridge through the pulse number after the lift motor many times of accumulation regulation and control, and correspond with preset dry layer height at current height position, then regulate and control converter 2 and stop to drive elevator motor work.
What current distribution bridge lift location relied on is the proximity switch on every layer, and proximity switch easily receives interference and fragile, and positioning accuracy is not high enough, and this embodiment controls distribution bridge elevator motor through this kind of closed-loop control's mode and carries out lift positioning control, and the control process response is fast, control accuracy is high, and more intelligent in control can effectually solve and use proximity switch to carry out the produced problem of positioning control.
Example two
Different from the first embodiment, as shown in fig. 2, the present embodiment further includes a control unit 4 in communication connection with the PLC processing system 1 and the frequency converter 2, the PLC processing system 1 outputs a control instruction and sends the control unit 4, the control unit 4 controls the frequency converter 2 to drive the lifting motor to rotate, the encoder 3 rotates along with the lifting motor and generates a pulse number indicating the number of rotation turns of the lifting motor, the control unit 4 receives the pulse number and converts the pulse number into a height position of the distribution bridge, and the control unit 4 compares the height position with a preset drying layer height and adjusts and controls the frequency converter 2 according to a comparison result, so as to implement the closed-loop fault self-checking control of the lifting motor.
EXAMPLE III
Different from the second embodiment, as shown in fig. 3 and 4, the second embodiment further includes a laser ranging sensor 5 installed below the end portion of the distribution bridge close to the drying machine, in addition to the PLC processing system 1 and the control unit 4, wherein the laser ranging sensor 5 is used for detecting a distance value between a roller table at the end portion of the distribution bridge and an installation position of the laser ranging sensor 5, and height values from the distribution bridge to different drying layers are prestored in the PLC processing system 1.
The PLC processing system 1 measures the initial height of the distribution bridge in a horizontal state according to an output signal of the laser ranging sensor 5, the PLC processing system 1 conducts superposition statistics on the initial position and the height position converted from the pulse number to obtain the end height of the distribution bridge close to the drying machine, and the PLC processing system 1 regulates and controls the work of the frequency converter 2 according to the comparison result of the end height and the preset drying layer height.
The laser ranging is a ranging mode in the light wave ranging, the PLC processing system 1 measures the initial height H1 of the distribution bridge in the horizontal state according to the laser ranging sensor 5, and when the lifting motor of the distribution bridge works, the PLC processing system 1 measures the inclined height H of the distribution bridge in the inclined state by using the laser ranging sensor 5.
Where, H is Ct/2, C is the transmission speed of the laser in the air, and t is the time difference between the laser ranging sensor 5 and the laser receiving.
The implementation mode has the advantages of simple structure, less external wiring, fewer fault points, quick control response, high precision of lifting and positioning control of the distribution bridge and good control effect.
Example four
The implementation manner of the present embodiment is specifically a combination of the first embodiment and the third embodiment, and as shown in fig. 5, includes a PLC processing system 1, a frequency converter 2, an encoder 3, and a laser ranging sensor 5.
The PLC processing system 1 calculates the lifting height of the lifting motor of the distribution bridge through output signals of the laser ranging sensor 5 and the encoder 3, and the PLC processing system 1 judges whether the lifting motor and the encoder 3 break down or not through comparing the two calculated lifting heights at the same time and judges the stability of the distribution bridge in adjusting the inclined height.
Specifically, the PLC processing system 1 determines the current height position of the distribution bridge by processing the output signal of the laser ranging sensor 5, the PLC processing system 1 calculates the current height position of the distribution bridge by processing the sum of the pulse numbers output by the encoder 3, the PLC processing system 1 calculates the height position difference of the output signal of the laser ranging sensor 5 at the same time interval for a plurality of times to judge the stability of the distribution bridge at the adjusted inclined height, and after the stability of the distribution bridge at the adjusted inclined height is adjusted, the height position difference of the same interval for a plurality of times is guaranteed to be the same.
The PLC processing system 1 can determine the accuracy of calculating the height position of the distribution bridge by using the encoder 3 by comparing the two current height positions calculated by the encoder 3 and the laser ranging sensor 5, namely whether a system error exists in the lifting motor or not, or determine whether a fault exists in the encoder 3 by the height position difference value of the root encoder 3 at the same time interval for a plurality of times.
Therefore, the embodiment can realize the self-checking work of the positioning control system by the dynamic positioning mode, automatically detect whether the encoder 3 has a fault by comparing the difference value of the output pulse numbers of the encoder 3 at the same time interval, automatically detect the stability of the lifting mode of the distribution bridge by comparing the difference value of the output signals of the laser ranging sensor 5 at the same time interval, thereby realizing the self-system detection work of closed loop automation, in addition, detect whether the lifting motor has a system error by comparing the height position calculated by the laser ranging sensor 5 with the height position calculated by the encoder 3 at the same time point through the PLC processing system 1, because the inlet of each drying layer is small and is only slightly larger than the thickness of the gypsum board, the height position difference of the distribution bridge driven by the lifting motor is important for the drying work of the gypsum board, in the embodiment, the positioning control precision is continuously improved in a self-circulation manner through the fault self-checking operation.
Specifically, the implementation manner of calculating the height position of the distribution bridge by using the laser ranging sensor 5 is as follows: when a lifting motor of the distribution bridge works, the PLC processing system 1 measures the inclination height H of the distribution bridge in an inclined state by using a laser ranging sensor 5;
where, H is Ct/2, C is the transmission speed of the laser in the air, and t is the time difference between the laser ranging sensor 5 and the laser receiving.
The calculation of the height position of the distribution bridge by means of the laser distance measuring sensor 5 and the encoder 3 is carried out in the following manner:
the PLC processing system 1 measures the initial height H1 of the distribution bridge in the horizontal state according to the laser ranging sensor 5, and when the lifting motor of the distribution bridge works, the PLC processing system 1 measures the inclined height H' of the distribution bridge in the inclined state by using the pulse number output by the encoder 3;
h' is H1+ Q, H1 is the sum of the roller bed initial height when the distribution bridge is in the horizontal state, the roller bed diameter and the thickness of the distribution bridge conveying belt, and Q is the vertical height of the pulse number conversion of the encoder 3.
The dry layer height is the height between each dry layer of the dryer and the installation plane of the laser ranging sensor 5, the PLC processing system 1 creates a functional relation between the inclined height of the distribution bridge and the dry layer height, and the inclined height of the distribution bridge is determined according to the required dry layer height.
For example, when a user inputs 10 layers from the upper computer, it means that the height of the end of the distribution bridge needs to be adjusted to a position corresponding to 10 layers, and the height of 10 layers is pre-stored in the PLC processing system 1, so that the height position of the distribution bridge can be determined by a functional relation between the inclined height of the distribution bridge and the height of the drying layer, the number of the demands of the encoder 3 is determined according to the height position, and when the number of pulses of the encoder 3 reaches the demand, the PLC processing system 1 controls the lifting motor to pause. Similarly, when the output signal of the laser ranging sensor 5 is the same as the height position, the PLC processing system 1 controls the lifting motor to suspend.
Because the lifting motor drives the distribution bridge to rotate around the end part of the distribution bridge so as to change the height position of the other end part of the distribution bridge, and the distribution bridge is matched with the layer height of the dryer, but when the distribution bridge rotates around the end part of the distribution bridge, the horizontal distance between the distribution bridge and the dryer is increased along with the increase of the rotation angle, and the laser ranging sensor 5 is fixedly installed below the distribution bridge, so that the distance between the roller way of the end part of the distribution bridge and the dryer is not changed in order to ensure that the laser ranging sensor 5 detects the roller way height of the end part of the distribution bridge, and the laser ranging sensor 5 can detect the height position of the distribution bridge in real time.
As shown in fig. 7, the specific implementation is as follows: distribution bridge is according to apart from the desiccator from far away to nearly divide into one-level roller set 6 and second grade roller set 7 in proper order, the central point of second grade roller set 7 puts and is equipped with the lifting unit who is used for driving the 7 slopes of second grade roller set, one-level roller set 6 and 7 end-to-end connections of second grade roller set, and the support tail end both sides of one-level roller set 6 are equipped with first sliding tray 8, the support head end both sides of second grade roller set 7 are equipped with the extension framed lamella 9 that distributes in the support outside of one-level roller set 6, and the tip of extension framed lamella 9 is equipped with the aversion pole 10 of placeeing in first sliding tray 8, aversion pole 10 through at the rotatory time of 8 spacing horizontal migration of first sliding tray with the desiccator entry horizontal separation of compensation second grade roller set 7.
That is, the shift rod 10 at the end of the extension frame plate 9 of the secondary roller set 7 moves along the first sliding groove 8 of the primary roller set 6, so when the lifting component drives the secondary roller set 7 to rotate, the shift rod 10 linearly moves in the first sliding groove 8, thereby the frame length of the secondary roller set 7 is extended, the horizontal distance between the secondary roller set 7 and the inlet of the drying machine is reduced when the secondary roller set 7 rotates, and the vertical up-and-down movement of the roller way position of the secondary roller set 7 close to the end of the drying machine is ensured.
The end part of the secondary roller group 7 close to the dryer is provided with a guide roller group 11, the frame of the guide roller group 11 is provided with a cutting hole groove 12, the outer surfaces of the two sides of the secondary roller group 7 are provided with limit rods 13 for limiting the rotation of the guide roller group 11, the surface of the dryer just facing the secondary roller group 7 is provided with a routing hole groove 14, a horizontal connecting rod 15 which moves linearly along the routing hole groove 14 is movably arranged in the routing hole groove 14, the horizontal connecting rod 15 is clamped on the roller way of the guide roller group 11, the horizontal connecting rod 15 is used for pressing the roller of the guide roller group 11 and the roller way at the tail end of the secondary roller group 7 to be on the same horizontal plane, and the horizontal link 15 pulls the frame of the guide roller set 11 to linearly move along the cut hole groove 12 through the stopper 13 when the secondary roller set 7 rotates, the horizontal distance between the second-level roller set 7 and the inlet of the dryer is compensated when the second-level roller set rotates, and the laser ranging sensor 5 is guaranteed to be always kept monitoring the height of the roller way of the guide roller set 11.
Further, in order to avoid the lengthened frame plate 9 from being too long and causing the gypsum board to be damaged in bending when being transferred from the primary roller set 6 to the secondary roller set 7, the length of the lengthened frame plate 9 is shortened in the embodiment, and the movable guide roller set 11 is added at the other end of the secondary roller set 7, and the guide roller set 11 horizontally moves along the secondary roller set 7 to further compensate the horizontal distance between the secondary roller set 7 and the inlet of the dryer when rotating.
And the guide roller set 11 is always kept at the same horizontal plane with the roller way at the tail end of the secondary roller set 7 under the action of the horizontal connecting rod 15, so that the roller way height of the guide roller set 11 detected by the laser ranging sensor 5 is the height position of the distribution bridge, and the installation position of the laser ranging sensor 5 can detect the distance between the secondary roller set 7 and the secondary roller set 7 when the secondary roller set 7 is positioned on the drying layer 1 layer and the drying layer 12 layer.
EXAMPLE five
Unlike example 4, as shown in fig. 6, in the present embodiment, a control unit 4 connected to the PLC processing system 1 is added, and the data processing operations for the laser range sensor 5 and the encoder 3 are both performed by the control unit 4.
EXAMPLE six
To further explain the working process of the positioning control device for gypsum board equipment, as shown in fig. 8, the present embodiment further provides a control method for the positioning control device for gypsum board equipment, including the following steps:
step 100, changing the number of drying layers of the drying machine for drying, and determining the required lifting height of the distribution bridge by the PLC processing system according to a functional relation between the lifting height of the distribution bridge and the height of the drying layers;
200, driving a lifting motor of the distribution bridge by a PLC processing system to adjust the plate feeding height of the distribution bridge, and monitoring the current total height position twice by using an encoder and a laser sensor;
and step 300, the PLC processing system regulates and controls the working state of the frequency converter according to the comparison result of the current total height position and the required lifting height.
The encoder is installed on the output shaft of the lifting motor of the distribution bridge and used for determining the adjustment height of the distribution bridge through counting the number of rotation turns of the output shaft of the lifting motor, the PLC processing system divides the pulse number output by the encoder in different rotation directions of the lifting motor into a positive number and a negative number, and the PLC processing system converts the pulse number of the encoder into the accumulated height position of the distribution bridge.
The laser sensor is installed below the end part, close to the drying machine, of the distribution bridge and used for monitoring the height position of the end part of the distribution bridge, the PLC processing system receives output signals of the laser sensor and the pulse number output by the encoder at the same time and converts the output signals into the current total height position of the distribution bridge and the accumulated height position of the encoder for multiple lifting operations, and the PLC processing system adjusts the conversion formula of the encoder and the stability of lifting operation of the distribution bridge by comparing the difference value of the current total height position and the accumulated height position.
The above embodiments are only exemplary embodiments of the present application, and are not intended to limit the present application, and the protection scope of the present application is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present application and such modifications and equivalents should also be considered to be within the scope of the present application.
Claims (10)
1. A gypsum board equipment positioning control device, characterized by comprising:
the PLC processing system (1) is used for receiving height position information of the distribution bridge and regulating and controlling the execution action of the servo element;
the frequency converter (2) is used for driving a lifting motor of the distribution bridge to rotate so as to regulate and control the inclination angle of the distribution bridge;
the encoder (3) is arranged on a rotating shaft of the lifting motor, generates a pulse number every time the rotating shaft of the lifting motor rotates one circle and is used for calculating the number of rotating circles of the lifting motor;
converter (2) with encoder (3) respectively with PLC processing system (1) electric connection, PLC processing system (1) output control instruction starts converter (2), converter (2) drive elevator motor is rotatory, just encoder (3) are followed elevator motor is rotatory and produce and show elevator motor rotates the pulse number of the number of turns, PLC processing system (1) is received the pulse number will the pulse number converts into the high position of distribution bridge, PLC processing system (1) will high position contrasts with preset's dry layer height and regulates and control according to the contrast result converter (2), it is right to realize elevator motor's closed loop fault self-checking control.
2. The gypsum board equipment positioning control device according to claim 1, wherein: the automatic control device is characterized by further comprising a control unit (4) in communication connection with the PLC processing system (1) and the frequency converter (2), wherein the PLC processing system (1) outputs a control instruction and sends the control unit (4), the control unit (4) controls the frequency converter (2) to drive the lifting motor to rotate, the encoder (3) follows the lifting motor to rotate and generate a pulse number representing the number of rotation turns of the lifting motor, the control unit (4) receives the pulse number and converts the pulse number into the height position of the distribution bridge, and the control unit (4) compares the height position with the preset drying layer height and regulates and controls the frequency converter (2) according to a comparison result so as to realize the closed-loop fault self-checking control of the lifting motor.
3. The gypsum board equipment positioning control device according to claim 1, wherein: the device is characterized by further comprising a laser ranging sensor (5) arranged below the end part, close to the dryer, of the distribution bridge, wherein the laser ranging sensor (5) is used for detecting a distance value between a roller way at the end part of the distribution bridge and the installation position of the laser ranging sensor (5), and height values from the distribution bridge to different drying layers are prestored in the PLC processing system (1);
the PLC processing system (1) measures the initial height of the distribution bridge in a horizontal state according to an output signal of the laser ranging sensor (5), the PLC processing system (1) conducts superposition statistics on the initial position and the height position converted by the pulse number to obtain the end height of the distribution bridge close to the dryer, and the PLC processing system (1) regulates and controls the work of the frequency converter (2) according to the comparison result of the end height and the preset drying layer height.
4. The gypsum board equipment positioning control device according to claim 3, wherein: PLC processing system (1) is through laser range finding sensor (5) and the output signal of encoder (3) calculates distribution bridge's elevator motor's lift height, PLC processing system (1) is through comparing two calculations simultaneously elevator height judges whether elevator motor and encoder (3) break down, and judge distribution bridge is at the stability of adjustment slope height.
5. The gypsum board equipment positioning control device according to claim 4, wherein: when a lifting motor of the distribution bridge works, the PLC processing system (1) measures the inclination height H of the distribution bridge in an inclined state by using the laser ranging sensor (5);
wherein H is Ct/2, C is the transmission speed of the laser in the air, and t is the time difference between the laser ranging sensor (5) and the laser receiving;
the PLC processing system (1) measures the initial height H1 of the distribution bridge in a horizontal state according to the laser ranging sensor (5), and when a lifting motor of the distribution bridge works, the PLC processing system (1) measures the inclined height H' of the distribution bridge in an inclined state by using the pulse number output by the encoder (3);
h' is H1+ Q, H1 is the sum of the roller bed initial height when the distribution bridge is in the horizontal state, the roller bed diameter and the thickness of the distribution bridge conveying belt, and Q is the vertical height of the pulse number conversion of the encoder (3).
6. The gypsum board equipment positioning control device according to claim 4, wherein: the dry layer height is specifically the height between each dry layer of the dryer and the installation plane of the laser ranging sensor (5), the PLC processing system (1) creates a functional relation between the inclined height of the distribution bridge and the dry layer height, and the inclined height of the distribution bridge is determined according to the required dry layer height.
7. The gypsum board equipment positioning control device according to claim 3, wherein: the distribution bridge is divided into a primary roller set (6) and a secondary roller set (7) from far to near according to the distance from the dryer, the center of the secondary roller set (7) is provided with a lifting component for driving the secondary roller set (7) to incline, the primary roller set (6) is connected with the secondary roller set (7) end to end, and both sides of the tail end of the bracket of the primary roller set (6) are provided with first sliding grooves (8), the two sides of the head end of the bracket of the secondary roller set (7) are provided with extension frame plates (9) distributed outside the bracket of the primary roller set (6), and the end part of the extension frame plate (9) is provided with a shift rod (10) inserted in the first sliding groove (8), the shifting rod (10) is horizontally spaced from the inlet of the dryer by limiting horizontal movement in the first sliding groove (8) to compensate the rotation of the secondary roller group (7).
8. The gypsum board equipment positioning control device according to claim 7, wherein: second grade roller set (7) are close to the tip of desiccator is equipped with guide roller set (11), be equipped with cutting hole groove (12) on the frame of guide roller set (11), the both sides surface of second grade roller set (7) is equipped with and is used for the restriction guide roller set (11) pivoted gag lever post (13), the desiccator is just right the surface of second grade roller set (7) is equipped with walking hole groove (14), walk hole groove (14) internalization and be equipped with along walking hole groove (14) linear movement's horizontal connecting rod (15), horizontal connecting rod (15) card dress on the roll table of guide roller set (11), horizontal connecting rod (15) are used for suppressing the running roller of guide roller set (11) with the roll table of second grade roller set (7) tail end is in same horizontal plane, just horizontal connecting rod (15) are in when second grade roller set (7) rotate pulling the frame of guide roller set (11) pass through gag lever post (13) along cutting hole groove (12) linear movement And moving to compensate the horizontal distance between the secondary roller set (7) and the dryer inlet when rotating, and ensuring that the laser ranging sensor (5) always monitors the roller way height of the guide roller set (11).
9. A control method of a gypsum board equipment positioning control device based on any one of claims 1 to 8, characterized by comprising the following steps:
step 100, changing the number of drying layers of a drying machine for drying, and determining the required lifting height of a distribution bridge by a PLC (programmable logic controller) processing system according to a functional relation between the lifting height of the distribution bridge and the height of the drying layers;
200, driving a lifting motor of a distribution bridge by the PLC processing system to adjust the plate feeding height of the distribution bridge, and monitoring the current total height position twice by using an encoder and a laser sensor;
and 300, regulating and controlling the working state of the frequency converter by the PLC processing system according to the comparison result of the current total height position and the required lifting height.
10. The control method of a gypsum board equipment positioning control device according to claim 9, wherein the encoder is installed on the output shaft of the lifting motor of the distribution bridge and used for determining the adjustment height of the distribution bridge by counting the number of rotation turns of the output shaft of the lifting motor, the PLC processing system divides the number of pulses output by the encoder to the lifting motor in different rotation directions into a positive number and a negative number, and the PLC processing system converts the number of pulses of the encoder into the accumulated height position of the distribution bridge by accumulating the number of pulses of the encoder;
the laser sensor is installed below the end part, close to the dryer, of the distribution bridge and used for monitoring the height position of the end part of the distribution bridge, the PLC processing system receives output signals of the laser sensor and the pulse number output by the encoder at the same time and converts the output signals into the current total height position of the distribution bridge and the accumulated height position of the encoder for multiple lifting operations, and the PLC processing system adjusts the conversion formula of the encoder and the stability of the lifting operation of the distribution bridge by comparing the difference value of the current total height position and the accumulated height position.
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Cited By (1)
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| WO2024087371A1 (en) * | 2022-10-24 | 2024-05-02 | 中建材创新科技研究院有限公司 | Device for precisely positioning, distributing and conveying gypsum plasterboard into drying oven and control method |
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| Publication number | Publication date |
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| CN113879757B (en) | 2022-10-21 |
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