Background technology
Bilateral scissors are used for cutting the steel plate rim charge in Plate Production, make steel plate reach suitable size.The conveying device of the upper bilateral scissors of prior art has two kinds of forms, and a kind of is folder rod formula conveying device, and this device send the plate precision higher, but easily makes Plate transferring deviation because the folder rod is carried, and often causes the plate shearing machine fault, and production efficiency is lower; Another kind is single-row roller conveyor, although this conveying device can not cause Plate transferring deviation, sending the plate amount is that the operator determines by visually observing with micro-judgment, and can not accurately control the plate amount of sending, production efficiency is lower equally.
Therefore need to improve the plate mode of sending of single-row roller conveyor, that can automatically control the bilateral scissors rollgang send the plate amount, improves and send the plate precision, thereby enhance productivity.
Summary of the invention
In view of this, the purpose of this invention is to provide a kind of method for the control plate conveying precision of bilateral steel shearing plate conveying roller, it can improve and send the plate precision, enhances productivity.
A kind of method for the control plate conveying precision of bilateral steel shearing plate conveying roller of the present invention comprises step:
A, with parameter
, μ and
The input computing module, computing module is according to formula
Calculate steel plate and do under non-slip state and accelerate and the accekeration during retarded motion, computing module is again according to formula
Calculate the maximum translational speed of steel plate, and according to formula
Calculate steel plate and do the zero-time of retarded motion;
B, computing module are with parameter
,
With
The control module of approach table motor;
C, control module are according to parameter
,
With
Control roller-way motor action makes the rotating speed of conveying roller increase to by 0
, and
Stop electric machines for roller during time point,
Constantly once send plate to finish;
In the above-mentioned formula:
, μ and
Be known quantity,
For conveying roller once send the plate step-length,
The maximum effectively shear length of≤bilateral scissors;
For sending the plate time,
≤ scissors empty stroke time, namely scissors leaves the time sum that steel plate is got back to highest point from time and the scissors that highest point drops on the steel plate; μ is the coefficient of rolling friction between steel plate and roller-way.
Beneficial effect of the present invention: a kind of method for the control plate conveying precision of bilateral steel shearing plate conveying roller of the present invention, by the control module input parameter to electric machines for roller
,
With
, control module is according to parameter
,
With
Control roller-way motor action, that realizes accurate control rollgang send the plate step-length at every turn, and has suffered and send the plate process to finish for automatic control, and operating efficiency is high; In practical operation, input and different steel plate materials adapt in the computing module send the plate step-length
With coefficient of rolling friction μ, that can accurately control different steel plates send the plate step-length, practical.
The specific embodiment
Fig. 1 send the panel control system schematic diagram for these bilateral scissors steel plate conveying roller.
A kind of method for the control plate conveying precision of bilateral steel shearing plate conveying roller of the present embodiment comprises step:
A, with parameter
, μ and
Input computing module 1,
computing module 1 is according to formula
Calculate steel plate and do under non-slip state and accelerate and the accekeration during retarded motion, computing module is again according to formula
Calculate the maximum translational speed of steel plate, and according to formula
Calculate steel plate and do the zero-time of retarded motion; Computing module is computer in the present embodiment;
B,
computing module 1 are with parameter
,
With
The
control module 2 of approach table motor,
control module 2 is frequency converter in the present embodiment;
C,
control module 2 are according to parameter
,
With
3 actions of control electric machines for roller make the rotating speed of conveying roller increase to by 0
, and
Stop electric machines for roller during time point,
Constantly once send plate to finish;
In the above-mentioned formula:
, μ and
Be known quantity,
For conveying roller once send the plate step-length,
The maximum effectively shear length of≤bilateral scissors;
For sending the plate time,
≤ scissors empty stroke time, namely scissors leaves the time sum that steel plate is got back to highest point from time and the scissors that highest point drops on the steel plate; μ is the coefficient of rolling friction between steel plate and roller-way, the accekeration equal and opposite in direction when steel plate is done acceleration and retarded motion under non-slip state.
The present invention is by the control module input parameter to electric machines for roller
,
With
, control module is according to parameter
,
With
Control roller-way motor action, that realizes accurate control rollgang send the plate step-length at every turn
, and have suffered and give the plate process to finish for automatically controlling, operating efficiency is high; In practical operation, input and different steel plate materials adapt in the computing module send the plate step-length
With coefficient of rolling friction μ, that can accurately control different steel plates send the plate step-length, practical.
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although with reference to preferred embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.