Background technology
Existing air brushing printer is fixed on shower nozzle on the movable dolly usually, by the motion of control dolly, realizes medium is carried out comprehensive air brushing.When not simultaneously at the dielectric thickness of air brushing, need accurately to regulate the dolly height, to regulate the distance of shower nozzle to medium, inaccurate if the dolly height is located, may occur: the dolly height is too high, and shower nozzle is too big to the distance of medium, and the air brushing effect is bad; Perhaps the dolly height is too low, and friction media sweeps medium easily, even damages shower nozzle.
More original regulative mode is for adopting manual adjustment, when the degree of regulation by manual adjustment is difficult for guaranteeing that error is bigger, has also increased labor intensity of operating personnel.So existing adjusting air brushing printer adopts the rotation of microprocessor MCU control step motor usually, stepper motor drives dolly, realizes the height of dolly is automatically adjusted.
By research to prior art, the inventor finds: adopt the rotation of microprocessor MCU control step motor, stepper motor drives dolly then, height to dolly is regulated, this method is an adjusted open loop, promptly can obtain umber of pulse by the distance that counting of carriers need move and issue stepper motor, and after walking according to the umber of pulse rotation, stepper motor just thinks that dolly arrives object height, but in the practical adjustments process, whether dolly reality arrives object height, whether even to move but be unknown, so this method can't guarantee the degree of regulation of dolly.
The utility model content
In view of this, the embodiment of the present application provides a kind of air brushing printer dolly arrangement for adjusting height, with realization the height of dolly is accurately regulated, and technical scheme is as follows:
A kind of air brushing printer dolly arrangement for adjusting height is used to regulate the height of air brushing printer dolly, comprising:
Be positioned at described dolly one side, and the fixed mount separate with dolly;
Be fixed on the grating chi on the described fixed mount;
Be fixed on the described dolly, and can read the read head of described grating chi high scale;
Be electrically connected with described read head, and have the controller of outside serial ports;
The stepper motor that is electrically connected with described controller;
Be connected with described dolly, and the angular displacement of described stepper motor can be converted to the dolly transmission mechanism of straight-line displacement up and down.
Preferably, this device further comprises: the grating signal decoding counter that is electrically connected with described read head and controller respectively.
Preferably, this device further comprises: the motor driver that is electrically connected with described controller and stepper motor respectively.
Preferably, this device further comprises: be fixed on the described fixed mount, and adjustable for height upper limit position block and lower position block.
Preferably, this device further comprises: be separately fixed at upper limit position switch and lower position switch on the described dolly, wherein: described upper limit position switch and lower position switch are electrically connected with described controller respectively, and described upper limit position switch and upper limit position block are on a vertical line, and described lower position switch and lower position block are on a vertical line.
Preferably, this device further comprises: the alarm that is electrically connected with described controller.
Preferably, described alarm comprises: buzzer and/or alarm lamp.
Preferably, described controller comprises single-chip microcomputer, on-site programmable gate array FPGA or complex programmable logic device (CPLD).
By above technical scheme as seen, in this air brushing printer dolly arrangement for adjusting height that the embodiment of the present application provides, be provided with the grating chi, on dolly, be fixed with read head in the dolly side.When the dolly height was regulated, controller received external control signal, and according to the object height value in the external control signal, stepper motor is accurately controlled, and with realization the dolly height was regulated.Controller also receives and is fixed on the grating signal that the read head on the dolly reads in addition, to this grating signal counting of decoding, just can obtain the actual height value after dolly is regulated.Controller compares this actual height value as the object height value in feedback and the external control signal, whether successful, realize the closed-loop adjustment to the dolly height if just can judge highly adjusting.When highly regulating just often, controller outwards sends the information of " command execution success " by outside serial ports; When highly undesired, controller outwards sends the information of " highly regulating failure " by outside serial ports.
Therefore the degree of regulation height of this air brushing printer dolly arrangement for adjusting height of providing of the application can prevent to sweep medium because of the inaccurate bad and friction media of air brushing effect that occurs in dolly height location effectively, even the situation of damage shower nozzle.
In addition, the controller in this arrangement for adjusting height adopts serial ports as carrying out the mutual external interface of signal with the outside, is convenient to realize automation.
The specific embodiment
In order to make those skilled in the art person understand technical scheme among the application better, below in conjunction with the accompanying drawing in the embodiment of the present application, technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment only is the application's part embodiment, rather than whole embodiment.Based on the embodiment among the application, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all should belong to the scope of the application's protection.
Embodiment one:
A kind of structural representation of the air brushing printer dolly arrangement for adjusting height that Fig. 1 provides for the embodiment of the present application one.
1 is dolly among the figure, and as shown in Figure 1, this air brushing printer dolly arrangement for adjusting height comprises: fixed mount 2, grating chi 3, read head 4, controller 5, stepper motor 6 and transmission mechanism 7, and wherein: fixed mount 2 is positioned at a side of dolly 1, and it is provided with grating chi 3; Read head 4 is fixed on the dolly 1, and is electrically connected with controller 5, is used for the motion conditions of dolly 1 is fed back to controller 5; Transmission mechanism 7 is connected with dolly 1, and controller 5 can be accepted external control signal, and can drive transmission mechanism 7 motions by stepper motor 6, and then the height of dolly 1 is regulated.
Fixed mount 2 is positioned at the side of dolly 1, and can not move on Z-direction, is maintained fixed distance with dolly 1 on X-axis and Y direction, and does not contact with dolly 1, and the two is separate.Grating chi 3 is fixed on the fixed mount 2, and the height referential when regulating as dolly 1 reads scale on the grating chi 3 by read head 4 when dolly 1 motion, just can obtain the height change of dolly 1.In the embodiment of the present application, grating chi 3 can be plastics grating chi, also can be other material well known to those of ordinary skill in the art, for example: metal grating chi or magnetic grating chi etc.
Read head 4 is fixed on the dolly 1, and be electrically connected with controller 5, when dolly 1 was highly regulated, read head 4 can move up and down with dolly 1, and reading grating signal sent to controller 5, the actual height value that is about to after dolly 1 is regulated sends to controller 5 as feedback signal.
Controller 5 is electrically connected with stepper motor 6, and it is provided with and the outside mutual outside serial ports 51 of signal that carries out.Controller 5 can receive outside control signal by outside serial ports 51, and according to the object height value production burst signal in the external control signal and send to stepper motor 6, stepper motor 6 is accurately controlled, and the height of dolly 1 is regulated realizing.After the adjusting of dolly height is finished, controller 5 can also receive the grating signal that read head 4 sends, and to this grating signal counting of decoding, obtain the actual height value of dolly 1, then this actual height value and object height value are compared, whether successful, to the closed-loop adjustment of dolly height, degree of regulation improves greatly if judging highly adjusting.In the embodiment of the present application, controller 5 is including, but not limited to single-chip microcomputer, on-site programmable gate array FPGA or complex programmable logic device (CPLD).
The actual height after dolly 1 is regulated and the difference in height of object height then think highly normal in desirable error range, and controller 5 outwards sends the information of " command execution success " by outside serial ports; The actual height after dolly 1 is regulated and the difference in height of object height have exceeded desirable error range, then think highly undesired, and controller 5 outwards sends the information of " highly regulate failure " by outside serial ports, and notice upper computer outside height is regulated fault, forbids operation.
Transmission mechanism 7 is connected with dolly 1, and the angular displacement that stepper motor 6 rotates can be converted to the straight-line displacement that dolly 1 moves up and down, and the height of dolly 1 is regulated.In the embodiment of the present application, transmission mechanism 7 is a transmission mechanism well known to those of ordinary skill in the art, including, but not limited to screw drive mechanism and guide track transmission mechanism.
In other embodiment of the application, as shown in Figure 2, between read head 4 and controller 5, can also increase grating signal decoding counter 8, be used for the grating signal that read head 4 the sends counting of decoding, obtain the actual height value of dolly 1, and this actual height is sent to control 5.Can also increase motor driver 9 between controller 5 and stepper motor 6, the pulse signal that is used for sending according to controller 5 drives stepper motor and rotates.
In addition, this air brushing printer dolly arrangement for adjusting height can also comprise: alarm 10, be electrically connected with controller 5, and be used for when highly undesired, report to the police, stop operation according to " highly regulating failure " information that controller 5 sends with alert.In the embodiment of the present application, alarm is including, but not limited to buzzer and alarm lamp.
Embodiment two:
When the dolly height is regulated, too high or too low situation appears for fear of dolly, on the basis of embodiment one, the application also provides another air brushing printer dolly arrangement for adjusting height, as shown in Figure 3, the another kind of structural representation of the air brushing printer dolly arrangement for adjusting height that provides for the embodiment of the present application.
In this air brushing printer dolly arrangement for adjusting height, dolly 1 is provided with two limit switches: be installed in lower position switch 11 and upper limit position switch 12 on the dolly 1, also be provided with Height Adjustable lower position block 21 and upper limit position block 22 on the fixed mount 2, and lower position switch 11 and lower position block 21 are on a vertical line, upper limit position switch 12 and upper limit position block 22 are on a vertical line, and controller 5 is electrically connected with upper limit position switch 11 and lower position switch 12 respectively.
When lower position switch 11 contacts with lower position block 21, the minimum constructive height that corresponding dolly 1 can arrive; When upper limit position switch 12 contacts with upper limit position block 22, the maximum height that corresponding dolly 1 can arrive.Promptly when dolly 1 rises, when if upper limit position switch 12 contacts with upper limit position block 22, upper limit position switch 12 is just closed, and closure signal is sent to controller 5, controller 5 stops operating according to closure signal control step motor 6, can avoid the lifting height of dolly 1 to surpass maximum height.When should dolly descending, also can avoid the falling head of dolly to be lower than minimum constructive height.
By above technical scheme as seen, in this air brushing printer dolly arrangement for adjusting height that the embodiment of the present application provides, be provided with the grating chi, on dolly, be fixed with read head in the dolly side.When the dolly height was regulated, controller received external control signal, and according to the object height value in the external control signal, stepper motor is accurately controlled, and with realization the dolly height was regulated.Controller also receives and is fixed on the grating signal that the read head on the dolly reads in addition, to this grating signal counting of decoding, just can obtain the actual height value after dolly is regulated.Controller compares this actual height value as the object height value in feedback and the external control signal, whether successful, realize the closed-loop adjustment to the dolly height if just can judge highly adjusting.When highly regulating just often, controller outwards sends the information of " command execution success " by outside serial ports; When highly undesired, controller outwards sends the information of " highly regulating failure " by outside serial ports.
Therefore the degree of regulation height of this air brushing printer dolly arrangement for adjusting height of providing of the application can prevent to sweep medium because of the inaccurate bad and friction media of air brushing effect that occurs in dolly height location effectively, even the situation of damage shower nozzle.
In addition, the controller in this arrangement for adjusting height adopts serial ports as carrying out the mutual external interface of signal with the outside, is convenient to realize automation.
The above only is the application's a preferred implementation, makes those skilled in the art can understand or realize the application.Multiple modification to these embodiment will be conspicuous to one skilled in the art, and defined herein General Principle can realize under the situation of the spirit or scope that do not break away from the application in other embodiments.Therefore, the application will can not be restricted to these embodiment shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.