CN102503085A

CN102503085A - Speed regulating system for glass calender

Info

Publication number: CN102503085A
Application number: CN2011103195027A
Authority: CN
Inventors: 邢宝山; 陈坤; 卢佩庆; 郑纤秀; 徐超; 宋方柯; 黄嗣熠; 王磊; 丁蕾; 黄广楠
Original assignee: Bengbu Triumph Engineering and Technology Co Ltd
Current assignee: Bengbu Triumph Engineering and Technology Co Ltd
Priority date: 2011-10-20
Filing date: 2011-10-20
Publication date: 2012-06-20
Anticipated expiration: 2031-10-20
Also published as: CN102503085B

Abstract

The invention discloses a speed regulating system for a glass calender, which comprises an upper calender roll, a lower calender roll and a supporting roll, wherein the upper calender roll, lower calender roll and supporting roll are respectively connected with a frequency converter; a process field communication bus ProfibusDP is utilized to connect a master station programmable logic controller (PLC) of the system, a slave station frequency converter with a coder templet and a man-machine interface in an industrial network; the coder templet on each frequency converter receives pulse signals transmitted from the coder on each roll motor; and the frequency converter performs closed-loop control according to the coder signals, and transmits the treated actual speed feedback quantity to the PLC through the process field communication bus ProfibusDP. The invention enhances the system reliability and compatibility, and perfectly solves the following problems: the same linear speed can not be added to or reduced from the upper calender roll, lower calender roll and supporting roll, the upper calender roll and the lower calender roll can not completely have synchronous linear speed for a long time, and the operator can not conveniently operate the glass calender.

Description

The glass pressing machine velocity control system

Technical field

The present invention relates to the glass pressing machine field, relate in particular to the velocity control system of glass pressing machine.

Background technology

Common glass pressing machine velocity control system only use frequency transformer through analog quantity 4-20ma current signal to last stack, the bottom calender roll of rolling press with scoop out roller (carrying roller) and carry out independent open loop speed control; When needing speed governing; Need adjustment successively to go up, go up stack, scoop out roller speed; Can't accomplish upper and lower stack and scoop out roller and add and subtract identical LV simultaneously; When the LV needs of upper and lower stack are synchronous, can't realize that more long LV is synchronous fully, and 4-20ma current analog amount signal is subject to disturb.In this case, the fast missionary society that each roller produces impacts glass-board surface, reduces the glass yield rate, causes very big loss to glasswork.Therefore, a kind of novel rolling press velocity control system is extremely important.

Summary of the invention

Technical problem to be solved by this invention provides a kind of glass pressing machine velocity control system.

For solving the problems of the technologies described above, the technical scheme that the present invention adopted is:

The glass pressing machine velocity control system; Include glass pressing machine last stack, bottom calender roll, scoop out roller; Last stack, the bottom calender roll of said glass pressing machine, the drive-motor that scoops out roller connect a frequency transformer respectively; It is characterized in that: also include said programmable logic controller, man-machine interface, between the Profibus DP interface of said three frequency transformer Profibus DP interfaces and programmable logic controller, be connected through process local communication bus Profibus DP communication between the Profibus DP interface on the Profibus DP interface of programmable logic controller and the man-machine interface.

Described a kind of glass pressing machine velocity control system is characterized in that: said frequency transformer is the frequency transformer of band scrambler template.

Advantage of the present invention is: use Profibus DP as industrial bus; Form a back yard industry network; System reliability and compatibility have been improved; Programmable logic controller (PLC) plays brain as the main website of system, carries out real-time communication through the frequency transformer and the man-machine interface of sequential operation and closed-loop control motor; Perfection solved in the puzzlement industry for many years upper and lower stack, scoop out roller can't add and subtract same line speed simultaneously, and upper and lower stack LV synchronous, the unhandy difficult problem of operator fully for a long time.

Description of drawings

Fig. 1 is the system architecture synoptic diagram.

Embodiment

As shown in Figure 1; The glass pressing machine velocity control system; Include glass pressing machine last stack, bottom calender roll, scoop out roller; Last stack, the bottom calender roll of said glass pressing machine, scoop out roller and connect a frequency transformer respectively; It is characterized in that: also include said programmable logic controller (PLC) 1, man-machine interface 5; Said going up on the frequency transformer 2 of stack, the frequency transformer 3 of bottom calender roll, the frequency transformer 4 that scoops out roller, programmable logic controller (PLC) 1, the man-machine interface 5 all has a Profibus DP interface; Inserting the high-speed bus junctor of a band programming port on the said Profibus DP interface, described high-speed bus junctor comprises line outlet and incoming line, and the line that said line outlet, incoming line are drawn is process local communication bus Profibus DP; The line outlet of the high-speed bus junctor on the said programmable logic controller (PLC) connects the incoming line of the high-speed bus junctor on the man-machine interface, incoming line connect to go up frequency transformer 2, the bottom calender roll of stack frequency transformer 3, scoop out the line outlet of high-speed bus junctor of the frequency transformer 4 of roller; The incoming line of the high-speed bus junctor of the frequency transformer 3 of the incoming line connection bottom calender roll of the high-speed bus junctor of the frequency transformer 2 of last stack; The incoming line of the high-speed bus junctor of the frequency transformer 3 of bottom calender roll scoops out the incoming line of high-speed bus junctor of the frequency transformer 4 of roller.

Said frequency transformer is the frequency transformer of band scrambler template.

Scrambler template on each frequency transformer receives the pulse signal that the scrambler on each roller motor sends; Frequency transformer sends after treatment AV value of feedback to PLC through process local communication bus Profibus DP when carrying out closed-loop control according to code device signal.Through PLC internal hardware configuration, transmit all controlled variable and speed feedback value through process local communication bus Profibus DP network.In PLC, the whole network of native system is carried out hardware configuration, definition frequency transformer, the address of man-machine interface in network are controlled each slave station with the reading and writing program of slave station through fieldbus.Because of upper and lower stack, the roller that scoops out roller directly have nothing in common with each other; The reduction ratio of the used motor of each roller and maximum amount are decided rotating speed and are also had nothing in common with each other; So must in PLC, utilize formula L (H)=P (H) x60x3.14xD (m)/i to calculate its separately the highest actual linear velocity (unit rice/hour), as the benchmark of speed governing, then; Corresponding with the communication speed CW mxm. 16384 that frequency transformer can be discerned, in PLC, carry out translation operation.Acceleration and deceleration are divided into basic, normal, high third gear; The increase and decrease amplitude respectively is 0.5m/h, 5 m/h, 10 m/h; Ratio according to roller footpath, motor reduction ratio, the maximum amount of each roller are decided between the rotating speed is set up the relation of acceleration and deceleration simultaneously, and the speed control word that the frequency transformer of handling the most at last can be discerned passes to each frequency transformer simultaneously through industrial bus.Acceleration and deceleration in the time of with the realization differential roller.The complete LV that realizes upper and lower stack if desired is synchronous; Then multiply by lower roll scrambler actual coding device actual measurement speed word after (roller of two rollers directly than); In PLC, compose the output speed word of giving top roll again, so just can realize that the complete LV of upper and lower stack is synchronous.

Claims

1. glass pressing machine velocity control system; Include glass pressing machine last stack, bottom calender roll, scoop out roller; Last stack, the bottom calender roll of said glass pressing machine, the drive-motor that scoops out roller connect a frequency transformer respectively; It is characterized in that: also include said programmable logic controller, man-machine interface, between the Profibus DP interface of said three frequency transformer Profibus DP interfaces and programmable logic controller, be connected through process local communication bus Profibus DP communication between the Profibus DP interface on the Profibus DP interface of programmable logic controller and the man-machine interface.

2. a kind of glass pressing machine velocity control system according to claim 1 is characterized in that: said frequency transformer is the frequency transformer of band scrambler template.