Background technology
Numerical control bender is protected using bender Special safety light curtain to bending process personal safety on existing market,
The course of work of bender safe light curtain can be divided into two regions:Danger zone and safety zone, peace is needed in danger zone
Full protection, safety zone safe light curtain invalidating signal.
Danger zone refers to:Untill upper die of bending machine comes downwards to the workpiece for touching bending.This region, if it happens
Shading, it is necessary to send control circuit of the dangerous stop signal to bender, control upper die of bending machine stops descending immediately.
Safety zone refers to:Upper mould returns to initial end after the completion of starting bending and bending.This region is to pacify
Full light curtain control bender stops, and is area of safety operaton.
When bender works bending workpieces, workpiece is upwarped, and blocks safe light curtain, if during this time, safety
Light curtain sends stop signal to bender, cannot just produce at all.Bender Special safety light curtain hazardous area realize with
When control bender stop, not controlling bender in safety zone, produce and process the carrying out of bending function safe ready.
It is as shown in Figure 1 the control principle drawing that bender Special safety light curtain is commonly used on existing market, it is opened by close
The signal of pass judges that current bending is, in danger zone or safety zone, effective guarantor to be carried out to the person in danger zone
Shield, when into safety zone workpiece upwarp block safe light curtain will not misoperation.But this bender Special safety light curtain exists
There are two defects in use:First, upper mould or lower mould species are different, are highly also different, so change the upper mould of different height
Or lower mould then needs to readjust mould position detection plate, operating efficiency is which decreased, and it is increased artificial during regulation
Uncertain factor influences the reliability of security protection.2nd, before bending workpieces, because operating personnel need to enter light curtain region pair
Upper/lower die is carried out to neutralizing the adjustment such as gap uniformity, now as shading can trigger safe light curtain, produces alarm to terminate sliding block
It is descending, die adjustment is become difficult, influence the convenience of operation.
It is accordingly required in particular to a kind of numerical control bender and method with intelligent and safe light curtain and safety guard, with
Solve problems of the prior art.
The content of the invention
The invention aims to solve in the prior art, there is no a kind of bender safety device for being suitable to practicality
Defect, there is provided a kind of numerical control bender application method with intelligent and safe light curtain and safety guard is existing to solve
Problem present in technology.
To achieve the above object, technical scheme is as follows:
A kind of numerical control bender application method with intelligent and safe light curtain and safety guard, it is described to realize that this is used
The numerical control bender of method includes upper mould, sliding block, lower mould, workbench, safe light curtain, and the upper mould is arranged on sliding block, described
The lower section of upper mould sets lower mould, and the lower mould is set on the table, and safe light curtain is also set up on the workbench, and its feature exists
In the numerical control bender also includes linear displacement transducer or angle displacement sensor, is provided on the sliding block directly
The linear displacement transducer of measurement slide block movement speed, direction and position, or set indirectly measurement slide block movement speed, direction and
The angle displacement sensor of position;The numerical control bender also includes digital control system, and the safe light curtain and straight-line displacement are sensed
Device is electrically connected with digital control system;The safe light curtain includes danger zone and safety zone, on the numerical control bender, upper mould
It is danger zone that bottom is located at workpiece surface region up, and it is place of safety that upper mould bottom is located at workpiece surface region down
Domain;
The application method of the numerical control bender is comprised the following steps:
Step one, digital control system is according to safe light curtain signal, work pieces process parameter and linear displacement transducer or angle position
Displacement sensor feedback position value, mould is in danger zone or safety zone on digital control system intelligent decision;
Step 2, when upper mould is in danger zone if human body or opaque article enter light curtain area, safe light curtain
To digital control system, then control slide block stops or up digital control system feedback trigger signal;Even if when upper mould is in safety zone
There are human body or opaque article to enter light curtain area, safe light curtain feeds back trigger signal to digital control system, and digital control system regards this signal
For invalid;
The application method of the numerical control bender also includes manual function, and the manual function is comprising for processing preceding realization
The movement of axle and auxiliary adjustment functional die, do not have in the manual function safety zone and danger zone point, safe light curtain
Decision mechanism is:When sliding block is in non-athletic state, digital control system is not sampled safe light curtain feedback signal, at this moment operating personnel
Upper/lower die can be carried out to neutralizing the adjustment such as gap uniformity into light curtain region, but once sliding block enters motion shape
State, digital control system recovers safe light curtain feedback signal of sampling at once, and safe light curtain enters monitoring guard mode.
In the present invention, the safe light curtain is arranged on the both sides of workbench.
In the present invention, the numerical control bender also includes workpiece, and the workpiece is used to be placed on lower mould.
In the present invention, one end of the workpiece is provided for moving forward and backward carries out spacing rear baffle to workpiece.
In the present invention, the work pieces process parameter described in the step one includes the upper/lower die ginseng set in digital control system
Number and thickness of workpiece parameter.
In the present invention, mould position detection plate is provided with numerical control bender, the digital control system when upper mould height change
Can be according to work pieces process parameter and the position of linear displacement transducer adjust automatically danger zone and safety zone.
Beneficial effect
A kind of numerical control bending with the on-line monitoring of intelligent and safe light curtain and safety guard of the invention
Machine application method, compared with prior art, solves and commonly used on existing market the defect that bender Special safety light curtain is present,
Both the safety of operating personnel can be protected in bending process, and does not influence operating efficiency;Simple structure, it is very practical, realize this
The purpose of invention.
Specific embodiment
In the view of whole accompanying drawings, corresponding reference symbol represents corresponding part.
A kind of numerical control bender application method with intelligent and safe light curtain and safety guard, realizes the application method
Numerical control bender include upper mould 1, sliding block 2, lower mould 3, workbench 4 and safe light curtain 5, upper mould 1 be arranged on sliding block 2 on, upper mould 1
Lower section lower mould 3 is set, lower mould 3 is arranged on workbench 4, and safe light curtain 5 is also set up on workbench 4, and numerical control bender is also wrapped
Linear displacement transducer or angle displacement sensor 6 are included, measurement sliding block 2 movement velocity, direction and position are provided on sliding block 2
Linear displacement transducer or angle displacement sensor 6;When in use, digital control system is according to the signal of safe light curtain 5, workpiece
7 machined parameters (upper/lower die parameter and thickness of workpiece parameter for being set in digital control system etc.) and linear displacement transducer or angle
The feedback position value of displacement transducer 6, the peace of operating personnel is protected in intelligent decision danger zone and safety zone in bending function
Entirely;Upper mould position detection plate need not be adjusted when upper 1 height change of mould, digital control system can be according to machined parameters of workpiece 7 and straight
Linear movement pick-up or angle displacement sensor 6 feed back automatic calculating and judge danger zone and safety zone.In manual function,
When sliding block is in non-athletic state, digital control system is not sampled safe light curtain feedback signal, and at this moment operating personnel can enter light
Curtain region is carried out to upper/lower die to neutralizing the adjustment such as gap uniformity, but once has sliding block to move, and safe light curtain 5 enters at once
Enter to monitor guard mode.
The safe light curtain of safe light curtain 5 is, by the light curtain product of safety certification, to be made up of two parts, and light projector launches tune
The infrared light of system, is received by light-receiving device, forms a catch net;In preferred embodiment, the light projector of safe light curtain 5 and
Light-receiving device is separately mounted to the both sides of workbench.
Numerical control bender, also including workpiece 7, workpiece 7 is used to be placed on lower mould 3, before and after one end of workpiece 7 is provided for
Movement carries out spacing rear baffle 8 to workpiece 7;In the embodiment replaced, rear baffle 8 can be a magnet piece, rear
Gear refers to during using magnet piece that magnet piece can be placed on the lower section of one end of workpiece 7, and now, rear baffle front and rear need not be moved
It is dynamic, when workpiece 7 is just placed, the suction of magnet piece can workpiece 4 one end lower section carry out it is spacing, when workpiece 7 is bent over,
The power of bending is more than the magnetic force of magnet piece, and now one end of workpiece 4 separate by not needing magnet piece movable with magnet piece,
Convenient use is reached, simplifies the effect of job step;In the embodiment of extension, can be coated on numerical control bender super thin
Water oleophobic composite coating, can realize numerical control bender automatically cleaning, ensure the sanitary grade during product use.
In the present invention, safe light curtain 5 includes danger zone and safety zone, on numerical control bender, upper mould bottom position
It is danger zone in the surface of workpiece 7 region up, is safety zone positioned at the surface of workpiece 7 region down;Numerical control bender,
Also include digital control system, safe light curtain 5 and linear displacement transducer 6 are electrically connected with digital control system;Digital control system has two functions:
Bending function and manual function.Bending function is used to process workpiece, and manual function is used to before processing realize movement and the auxiliary of axle
The functions such as adjustment mould.
In bending function, (what is set in digital control system is upper according to safe light curtain signal, work pieces process parameter for digital control system
Lower die parameters and thickness of workpiece parameter etc.) and linear displacement transducer or angle displacement sensor feedback position value, numerical control system
Mould is in danger zone or safety zone on system intelligent decision, and it is hazardous area that upper mould bottom is located at workpiece surface region up
Domain, it is safety zone that upper mould bottom is located at workpiece surface region down.When upper mould is in danger zone if human body or
Opaque article enter light curtain area, safe light curtain feed back trigger signal to digital control system, digital control system then control slide block stop or
It is up;Even if thering is human body or opaque article to enter light curtain area, safe light curtain feedback triggering letter when upper mould is in safety zone
Number digital control system is given, digital control system regards this signal as invalid.
Mould position detection plate is provided with bending function, digital control system can be according to work pieces process when upper mould height change
Parameter and the position of linear displacement transducer or angle displacement sensor adjust automatically danger zone and safety zone.
In manual function, do not have safety zone and danger zone point, safe light curtain decision mechanism is:When sliding block is in
During non-athletic state, digital control system is not sampled safe light curtain feedback signal, and at this moment operating personnel can enter light curtain region to upper
Lower mould adjusted to neutralizing gap uniformity etc., but once sliding block enters motion state, digital control system is recovered to adopt at once
Sample safe light curtain feedback signal, safe light curtain enters monitoring guard mode.
A kind of application method of the numerical control bender with intelligent and safe light curtain and safety guard, including following step
Suddenly:
Step one, digital control system is according to safe light curtain signal, work pieces process parameter and linear displacement transducer or angle position
Displacement sensor feedback position value, mould is in danger zone or safety zone on digital control system intelligent decision, and upper mould bottom is located at
Workpiece surface region up is danger zone, and it is safety zone that upper mould bottom is located at workpiece surface region down;
Step 2:When upper mould is in danger zone if human body or opaque article enter light curtain area, safe light curtain
To digital control system, then control slide block stops or up digital control system feedback trigger signal;Even if when upper mould is in safety zone
There are human body or opaque article to enter light curtain area, safe light curtain feeds back trigger signal to digital control system, and digital control system regards this signal
For invalid.
Work pieces process parameter described in step one includes the upper/lower die parameter set in digital control system and thickness of workpiece ginseng
Number.
In the present invention, there is no upper mould position detection plate in numerical control bender, the number when upper mould or lower mould height change
Control system can be according to work pieces process parameter and the position of linear displacement transducer adjust automatically danger zone and safety zone.
In the present invention, the numerical control bender includes manual function, and the manual function is comprising for processing preceding realization
The movement of axle and auxiliary adjustment functional die, do not have in the manual function safety zone and danger zone point, safe light curtain
Decision mechanism is:When sliding block is in non-athletic state, digital control system is not sampled safe light curtain feedback signal, at this moment operating personnel
Upper/lower die can be carried out to neutralizing the adjustment such as gap uniformity into light curtain region, but once sliding block enters motion shape
State, digital control system recovers safe light curtain feedback signal of sampling at once, and safe light curtain enters monitoring guard mode.
Further, as shown in Figure 3 in bending function, the course of work of bender safe light curtain 5 can be divided into two
Region:Danger zone B and safety zone C, in danger zone, B needs security protection, safety zone C safe light curtain invalidating signals.
The bottom of upper mould 1 be located at the surface of workpiece 7 (shape of workpiece 7 is generally tabular, surface be contain tabular upper surface and/or under
Surface) region up is danger zone, it is safety zone that the bottom of upper mould 1 is located at the surface of workpiece 7 region down.
Further, digital control system as shown in Figure 3 (sets according to safe light curtain signal, work pieces process parameter in digital control system
Upper/lower die parameter and thickness of workpiece parameter for putting etc.) and linear displacement transducer or angle displacement sensor feedback position value,
Mould is in danger zone or safety zone on intelligent decision in bending process.
Further, when being currently at danger zone and sliding block as shown in Figure 3 and being in downward movement state, if human body
Or opaque article enters light curtain area, safe light curtain feeds back trigger signal to digital control system, and then control slide block stops digital control system
Or it is up.
Further, as shown in Figure 3 when digital control system judges upper mould bottom contact workpiece surface, Bending Processing process
Safety zone is entered from danger zone.
Further, as shown in Figure 3 in manual function, do not have safety zone and danger zone point, safe light curtain is sentenced
Determining mechanism is:When sliding block is in non-athletic state, digital control system is not sampled safe light curtain feedback signal, and at this moment operating personnel can
Upper/lower die is carried out to adjustment such as neutralization gap uniformity with into light curtain region, but once sliding block enters motion state,
Digital control system recovers safe light curtain feedback signal of sampling at once, and safe light curtain enters monitoring guard mode.
Fig. 3 is safety zone workpiece triggering light curtain structural representation of the invention:Workpiece bows block safety shown in figure
Light curtain light, but because now Bending Processing process has had been enter into safety zone, even if someone when upper mould is in safety zone
Body or opaque article enter light curtain area, and safe light curtain feeds back trigger signal to digital control system, and it is nothing that digital control system regards this signal
Effect, so sliding block operation will not be stopped due to the error of safe light curtain trigger signal.
The above-mentioned description to embodiment is to be understood that and use this hair for ease of those skilled in the art
It is bright.Person skilled in the art obviously easily can make various modifications to these embodiments, and described herein
General Principle is applied in other embodiment without by performing creative labour.Therefore, the invention is not restricted to above-described embodiment,
Those skilled in the art's announcement of the invention, does not depart from improvement that scope made and modification all should be in this hair
Within bright protection domain.