WO2018170692A1 - 一种微进给装置及基于微进给装置实现喷头拼接的方法 - Google Patents

一种微进给装置及基于微进给装置实现喷头拼接的方法 Download PDF

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Publication number
WO2018170692A1
WO2018170692A1 PCT/CN2017/077354 CN2017077354W WO2018170692A1 WO 2018170692 A1 WO2018170692 A1 WO 2018170692A1 CN 2017077354 W CN2017077354 W CN 2017077354W WO 2018170692 A1 WO2018170692 A1 WO 2018170692A1
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WIPO (PCT)
Prior art keywords
unit
driving unit
feeding
feeding unit
nozzle
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PCT/CN2017/077354
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English (en)
French (fr)
Inventor
李伟波
瞿浩正
王树伟
王格日乐图
马晋
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深圳华云数码有限公司
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Application filed by 深圳华云数码有限公司 filed Critical 深圳华云数码有限公司
Priority to PCT/CN2017/077354 priority Critical patent/WO2018170692A1/zh
Publication of WO2018170692A1 publication Critical patent/WO2018170692A1/zh

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  • the invention relates to the field of printing equipment manufacturing, in particular to a micro-feeding device and a method for realizing nozzle splicing based on a micro-feeding device.
  • a combined nozzle can be designed to achieve an improvement in resolution.
  • the combined nozzle should include at least two nozzles aligned in front and rear. When one of the nozzles produces a slight displacement in the left-right direction with respect to the nozzle of the nozzle itself, the two nozzles are re-fixed, and the two nozzles are re-fixed. The resulting combined printhead print resolution is doubled.
  • An object of the embodiments of the present invention is to provide a micro-feeding device and a method for realizing nozzle splicing based on a micro-feeding device, which can solve the technical problem of high cost and complicated system of the existing micro-feeding device.
  • a technical solution adopted by the embodiment of the present invention is to provide a micro-feeding device, comprising a console provided with an operation area, wherein the operation area is used for carrying a workpiece; a first driving unit; a second driving unit, the first driving unit and the second driving unit are oppositely disposed on two sides of the operation area; a first feeding unit, the first feeding unit is located at the first driving unit and the Between the second drive unit and said a first feeding unit is coupled to the first driving unit; a second feeding unit is located between the first feeding unit and the second driving unit, and the second a feeding unit is connected to the second driving unit; a first distance measuring unit is configured to detect a distance between the first feeding unit and a workpiece located in the operation area; and a second distance measuring unit is configured to: Detecting a distance between the second feeding unit and a workpiece located in the operating area; the first driving unit is configured to drive the first feeding unit to move toward the second driving unit, The second driving unit is configured to drive the second
  • the first feeding unit comprises a first screw rod and a first stopper, one end of the first screw rod is connected to the first driving unit, and the other end is connected to the first stopping block;
  • the second feeding unit includes a second screw rod and a second stopper, one end of the second screw rod is connected to the second driving unit, and the other end is connected to the second stopper.
  • first block and the second block are both V-shaped blocks, the first block includes a first apex angle, and the second block includes a second apex angle, the first The top corner is coupled to the other end of the first lead screw, and the second top corner is coupled to the other end of the second lead screw.
  • the first ranging unit includes: a first camera and a first range finder; the first camera is disposed on the console, and the first camera is configured to capture the first block and the camera a first image of one end of the workpiece, the first range finder detecting a distance of the first block from one end of the workpiece according to the first image;
  • the second ranging unit comprises: a second a camera and a second range finder; the second camera is disposed on the console, and the second camera is disposed opposite to the first camera, and the second camera is configured to capture the second block And a second image of the other end of the workpiece, the second range finder detecting a distance of the second block from the other end of the workpiece according to the second image.
  • the first ranging unit further includes: a first light source, the first light source is disposed on the operation table, and the first light source is opposite to the first camera; the second distance measurement The unit further includes: a second light source, the second light source is disposed on the operation table, and the second light source is disposed opposite to the second camera.
  • the first driving unit and the second driving unit are stepping motors.
  • a method for realizing nozzle splicing based on a micro feed device is provided.
  • the micro feed device includes:
  • the operation console is provided with an operation area, wherein the operation area is for carrying a nozzle.
  • a first driving unit, the second driving unit, the first driving unit and the second driving unit are oppositely disposed on two sides of the operation area;
  • the first feeding unit, the first feeding unit is located at the first Between the driving unit and the second driving unit, and the first feeding unit is connected to the first driving unit;
  • the second feeding unit, the second feeding unit is located at the first feeding unit And the second driving unit is connected to the second driving unit;
  • the first measuring unit is configured to detect the first feeding unit and located in the operating area a distance between the workpieces;
  • a second distance measuring unit configured to detect a distance between the second feeding unit and a workpiece located in the operating area;
  • the method comprising: the first driving unit according to The detection result of the first ranging unit drives the first feeding unit to move, so that the first feeding unit is in contact with one end of the nozzle;
  • the second driving unit is according to the second measurement The detection result of the unit, driving
  • the driving of the first feeding unit to move the first feeding unit to be in contact with one end of the nozzle according to the detection result of the first ranging unit comprises: to the first The driving unit sends a first coarse control signal to cause the first driving unit to drive the first feeding unit to move toward the nozzle; and the first ranging unit detects the first When the unit is moved to the first preset position, stopping sending the coarse adjustment control signal to the first driving unit, and transmitting the first fine adjustment control signal to the first driving unit; the first driving unit is according to the first The fine adjustment control signal drives the first feeding unit to move toward a direction of one end of the nozzle; when the first distance measuring unit detects that the first feeding unit is in contact with one end of the nozzle, stops the orientation The first driving unit sends a fine control signal
  • the driving the second feeding unit to move to a position at a preset distance from the other end of the nozzle according to the detection result of the second ranging unit comprising: pairing the second The driving unit sends a second coarse adjustment control signal to cause the second driving unit to drive the second feeding unit to move toward the nozzle; and the second ranging unit detects the second feeding unit Moving to the second preset position, stopping transmitting the coarse adjustment control signal to the second driving unit, and transmitting the second fine adjustment control signal to the second driving unit; the second driving unit according to the second fine adjustment The control signal drives the second feeding unit to move toward the other end of the head; the second distance measuring unit detects that the second feeding unit moves to a predetermined distance from the other end of the head And stopping transmitting the second fine control signal to the second driving unit.
  • the first feeding unit is driven to move the nozzle on the operating area according to the detection result of the second ranging unit, so that the other end of the nozzle contacts the second feeding unit.
  • the method includes: transmitting a third fine adjustment control signal to the first driving unit, so that the first driving unit drives the first feeding unit to push the nozzle to move in a direction toward the second feeding unit; Stopping sending the third fine adjustment control signal to the first driving unit when the second ranging unit detects that the other end of the nozzle is in contact with the second feeding unit
  • the beneficial effects of the embodiments of the present invention are: different from the prior art, the micro-feeding device provided by the present invention and the method for realizing nozzle splicing based on the micro-feeding device pass the precision of each unit with low cost and simple structure. The combination can achieve precise movement of the workpiece and achieve high cost performance.
  • FIG. 1 is a schematic structural view of a micro-feed device according to an embodiment of the present invention.
  • Figure 2 is a schematic structural view of the ranging unit of Figure 1;
  • FIG. 3 is a schematic structural view of a micro-feed device according to another embodiment of the present invention.
  • Figure 4 is an enlarged schematic view of view A of Figure 3;
  • FIG. 5 is a schematic flow chart of a method for realizing nozzle splicing based on a micro-feed device according to an embodiment of the present invention
  • FIG. 6 is a schematic diagram of a nozzle based on a micro-feed device according to another embodiment of the present invention. Schematic diagram of the specific implementation of the connected method.
  • FIG. 1 is a micro-feed device 10 according to an embodiment of the present invention.
  • the micro-feeding device 10 includes a console 101, a first driving unit 102, a second driving unit 103, a first feeding unit 104, a second feeding unit 105, a first ranging unit 106, and a Two ranging unit 107.
  • the operation table 101 is provided with an operation area 1011, and the operation area 1011 is located at an intermediate position of the operation table 101, and the operation area 1011 is for carrying a workpiece.
  • the first driving unit 102 and the second driving unit 103 are oppositely disposed on both sides of the operation area 1011.
  • the first feeding unit 104 is located between the first driving unit 102 and the two driving units 103, and one end of the first feeding unit 104 is connected to the first driving unit 102.
  • the second feeding unit 105 is located between the second driving unit 103 and the first feeding unit 104, and one end of the second feeding unit 105 is connected to the second driving unit 103.
  • the first driving unit 102 can drive the first feeding unit 104 to move toward the second driving unit 103.
  • the first driving unit 102 can also drive the first feeding unit 104 to push the workpiece to move.
  • the second driving unit 103 can drive the second feeding unit 105 to move toward the first driving unit 102, and the second driving unit 103 can also drive the second feeding unit 105 to push the workpiece to move.
  • the micro-feed device provided by the embodiment has a device with a certain precision, and therefore the assembly processing of each component in the micro-feed device has accuracy requirements.
  • the first driving unit 102 and the second driving unit 103 in this embodiment may be a stepping motor that controls the displacement amount by controlling the number of pulses to accurately position the workpiece.
  • It can also be a servo motor or the like.
  • the first feeding unit 104 and the first feeding unit 105 in this embodiment are parts having a transmission function that can follow the movement of the driving unit.
  • the transmission parts are parts having specific precision requirements, for example, having a certain precision level. Screw.
  • the first driving unit 102 and the second driving unit 103 are stepping motors
  • the first feeding unit 104 and the second feeding unit 105 are screw rods, and the stepping motor and the screw rod may be connected by a coupling.
  • the first ranging unit 106 is disposed at a corresponding position of the operating area 1011 at the first driving
  • the first ranging unit 106 can detect the distance between the first feeding unit 104 and the workpiece located in the operating region.
  • the second driving unit 103 drives the second feeding unit 105 to move toward the first driving unit 102
  • the second ranging unit 107 can detect the second feeding unit 105 and the workpiece located in the operating region. the distance between.
  • the process of moving the workpiece in a certain direction may be: the first driving unit 102 is based on the first measurement. As a result of the detection by the unit 106, the first feeding unit 104 is driven to move so that the first feeding unit 105 is in contact with the left end of the workpiece; the second driving unit 103 further drives the second according to the detection result of the second ranging unit 107.
  • the feeding unit 105 moves to a position at a predetermined distance from the right end of the workpiece; the first driving unit 102 further drives the first feeding unit 104 to move the workpiece on the operating region according to the detection result of the second ranging unit 105 to make the workpiece The right end is in contact with the second feeding unit 105.
  • the micro-feeding device provided by the embodiment has low cost, simple system, convenient operation by an operator, and high cost performance.
  • the first ranging unit 106 includes: a first ranging The meter 1061 and the first camera 1062; the second ranging unit 107 includes: a second range finder 1071 and a second camera 1072.
  • the method of ranging of the first ranging unit 106 will be described in detail below.
  • the first camera 1062 can transmit the collected image of the positional relationship between the first feeding unit 104 and the workpiece at each moment to the external device, and the range finder The 1061 further processes and analyzes the collected information, and controls the range finder 1061 to detect the distance between the currently collected first feeding unit 104 and the workpiece to determine the positional relationship between the first feeding unit 104 and the workpiece.
  • the structure and function of the second range finder 1071 and the second camera 1072 of the second ranging unit 107 and the structure and function of the first range finder 1061 and the first camera 1062 in the first ranging unit 106 The same, no longer repeat here.
  • the ranging methods of the first ranging unit 106 and the second ranging unit 107 may also be laser ranging, ultrasonic ranging, and the like.
  • the first ranging unit 106 further includes: The light source 1063; the second ranging unit 107 further includes: a second light source 1073.
  • the first camera 1062 and the first light source 1063 are oppositely disposed on the console 101 ; the second camera 1072 and the second light source 1073 are oppositely disposed on the console 101 .
  • the first light source 1063 When the first camera 1062 is used to observe the contact between the left end of the workpiece and the first feeding unit 104, the first light source 1063 is illuminated, and the image captured by the first camera 1062 can be made clearer by the complementary light to more accurately determine the first input.
  • the contact condition of the first feeding unit 1041 with the workpiece during the movement of the unit 104 is given.
  • the image captured by the second camera 1072 can be made clearer to more accurately determine the contact condition of the second feeding unit 105 with the workpiece during the movement of the second feeding unit 105. It should be noted that the position of the first camera 1062 and the first light source 1063 on the operation area 1011 in FIG.
  • the position of the second camera 1072 and the second light source 1073 on the operation area 1011 are only one position realization in the embodiment.
  • the position is not limited, and it is only necessary to satisfy the condition of measuring the contact between the workpiece and the first feeding unit 104 and the second feeding unit 105 and the workpiece.
  • the first feeding unit 104 and the second feeding unit 105 are respectively in contact with the workpiece or need to push the workpiece to move, in order to match different shape sizes of the workpiece, for example, the workpiece shape is irregular
  • the first feeding unit 104 and the One end of the two feeding unit 105 is respectively provided with a stopper that matches the shape and size requirements of the workpiece.
  • the stopper can be moved by the first feeding unit 104 and the second feeding unit 105. And through the cooperation of the stopper and the workpiece, the workpiece movement is further efficiently and accurately pushed.
  • the first feeding unit 104 may include a first screw 1041 and a first stopper 1042.
  • the first stopper 1042 may be a V-shaped stopper, and the apex angle of the V-shaped stopper is fixed to the other end of the first screw 1041, and the opening of the V-shaped stopper faces the second feeding unit 105. When it is necessary to fix the moved workpiece, the worker can fix the workpiece through the opening portion of the V-shaped stopper.
  • the second feeding unit 105 may include a second screw 1051 and a second stopper 1052, one end of the second screw 1051 is connected to the second driving unit 103, and the other end and the second end of the second screw 1051 are connected.
  • the stoppers 1052 are connected.
  • the second stop 1052 can be a V-shaped stop and the top corner of the V-shaped stop
  • the other end of the second screw 1051 is fixed, and the opening of the V-shaped stopper faces the first feeding unit 104.
  • the first stop 1042 and the second stop 1052 can also have other shapes.
  • FIG. 3 is another micro-feed device 20 according to the embodiment.
  • the micro-feed device 20 is different from that of FIG. 1 in that the micro-feed device 20 further includes the first embodiment as shown in FIG.
  • the positioning block 212, the second positioning block 213, and the third positioning block 214 are positioned.
  • the first positioning block 212 is fixedly disposed in the operation area 2011 and located between the first feeding unit 204 and the second feeding unit 205 for fixing the initial position of the workpiece.
  • the second positioning block 213 and the third positioning block 214 are fixedly disposed in the operation area 2011, and the second positioning block 213 is disposed in alignment with the first positioning block 212 as shown in FIG. 3 for fixing the reference object or another workpiece. .
  • the micro-feeding device drives the first feeding unit and the second feeding unit to move by the mutual cooperation of the first driving unit and the second driving unit, and drives the first feeding unit and the second feeding.
  • the unit pushes the workpiece to move, and detects the micro feed of the workpiece by detecting the end of the first feeding unit and the workpiece and the distance between the second feeding unit and the other end of the workpiece through the first ranging unit and the second ranging unit in real time. mobile.
  • the micro-feeding device can realize precise movement of the workpiece through the precise cooperation of the respective units at a low cost and a simple structure, thereby achieving high cost performance.
  • the embodiment further provides a method for realizing nozzle splicing based on the micro-feed device.
  • a plurality of printhead assemblies need to be assembled to form a composite showerhead assembly to achieve a higher print resolution.
  • the first row of nozzles should be used as the reference, and the second row of nozzles should be relatively first.
  • the nozzles of the row move a certain displacement value to the right or left, so that the combined two rows of nozzles can achieve a printing resolution of 1200.
  • the displacement value is determined by half of the nozzle nozzle pitch, and the displacement amount is generally on the order of micrometers, for example, moving 21 micrometers, wherein the displacement of 21 micrometers can This is achieved by means of the micro-feed device 20 provided by the present embodiment.
  • the specific process of the micro-feed device 20 to realize the splice splicing will be described in detail below with reference to FIGS. 3 and 4.
  • the micro-feed device 20 shown in FIG. 3 can realize the splicing of the nozzle.
  • the micro-feed device 20 includes a console 201, a first driving unit 202, a second driving unit 203, and a first feeding unit. 204.
  • the structure and function of the micro-feeding device 20 are the same as those of the micro-feeding device 10 in the above embodiment.
  • the micro-feeding device 20 is used to realize the micro-displacement of the first nozzle relative to the second nozzle. As shown in FIG. 5, the method includes the following steps:
  • Step 201 The first driving unit drives the movement of the first feeding unit according to the detection result of the first ranging unit, so that the first feeding unit is in contact with one end of the nozzle.
  • the first driving unit 202 is a driving motor that can receive a control signal, and the first driving unit 202 receives the control signal, and controls the first driving unit 202 to drive the first feeding unit 204 to move toward the first nozzle.
  • the first ranging unit detects that the first feeding unit 204 is moved to contact with the left end of the workpiece, the transmission of the control signal to the first driving unit 202 is stopped.
  • Step 202 The second driving unit drives the second feeding unit to move to a position separated from the other end of the nozzle by a preset distance according to the detection result of the second ranging unit.
  • the second driving unit 203 receives the control signal, drives the second feeding unit 205 to move toward the first nozzle, and when the second ranging unit detects that the second feeding unit 205 moves to a predetermined distance from the right end of the workpiece Stop transmitting the control signal to the second driving unit 203.
  • the preset distance in this embodiment is a distance that the first nozzle needs to move relative to the second nozzle. For example, when the preset distance is 21 micrometers, when the second driving unit 203 drives the second feeding unit 205 to move, the second The distance measuring unit performs the detection of the distance between the second feeding unit 205 and the first nozzle.
  • the control command causes the second feeding unit 205 to maintain a state of a distance of 21 micrometers from the right end of the first head.
  • Step 203 The first driving unit drives the first feeding unit to move the nozzle on the operating area according to the detection result of the second ranging unit, so that the other end of the nozzle contacts the second feeding unit.
  • the first driving unit 202 further receives a control signal, and controls the first driving unit 202 to drive the first feeding unit 204 to push the first nozzle to move, and the second ranging unit detects that the right end of the first nozzle is just opposite to the second feeding unit.
  • the motion control command should be suspended for the first driving unit 202 to make the right end of the first nozzle contact the second feeding unit 20 and maintain the contact state.
  • the first feeding unit 202 and the second feeding unit 303 are in contact with the two ends of the first head, respectively, the first feeding unit 202 and the second feeding unit 303. It can be formed as a fixture at the same time, which facilitates the fastening of the first nozzle.
  • the method for realizing nozzle splicing based on the micro-feeding device provides a driving of the first feeding unit and the second feeding unit by driving the first driving unit and the second driving unit, and driving the first feeding Pushing the workpiece movement to the unit and the second feeding unit, and detecting, in the real-time, the first feeding unit and one end of the workpiece, and the distance between the second feeding unit and the other end of the workpiece through the first ranging unit and the second ranging unit, To achieve micro-feed movement of the workpiece.
  • the method is simple in operation and high in displacement accuracy.
  • the embodiment further provides a specific implementation method for realizing nozzle splicing based on the micro-feed device. As shown in FIG. 6, the steps of the method for realizing nozzle splicing based on the micro-feed device are as follows:
  • Step 301 Send a first coarse control signal to the first driving unit, so that the first driving unit drives the first feeding unit to move toward the first nozzle, and the first camera detects that the first feeding unit moves to When the first preset position is stopped, the coarse control signal is stopped from being sent to the first driving unit.
  • the first coarse control signal received by the first driving unit 202 can be jointly controlled by a computer and a motion control unit that directly issue a manipulation command.
  • the first coarse control signal may be an absolute position coordinate motion command sent by the motion control unit to the first driving unit 202, and the command parameter of the absolute position coordinate motion command is a coordinate position of the first block 206, for example, the detected
  • the first drive unit 202 drives the first feed unit 204 to move the first stop 206 to the right.
  • the first drive unit 202 drives the first feed unit 204 to move to the right. 10cm position.
  • the first camera 208 After the first block 206 moves to the right by 10 cm, it is determined by the first camera 208 whether the first block 206 enters the field of view of the first camera 208, and the first block 206 enters the field of view of the first camera 208.
  • a predetermined position, and the first preset position is near the left end of the first head, for example 1 mm from the left end of the first head.
  • the step is completed: the first block 206 is controlled to be shifted to the right by 10 cm according to the first coarse control signal, so that the first block 206 enters the field of view of the first camera 208, and it is determined whether the first block 206 enters the first camera for rapid observation.
  • the field of view of 208 can be used to estimate the coordinate value of the right movement of the first block 206 in advance, and directly send a control signal to the first driving unit 202 according to the coordinate value.
  • the coordinate value of the command parameter may be increased on the basis of the first coarse control signal, and the motion may continue to be sent to the first driving unit 202. instruction. Until the first stop 206 enters the field of view of the first camera 208.
  • Step 302 Send a first fine adjustment control signal to the first driving unit, so that the first driving unit drives the first feeding unit to move toward the first nozzle, and the first camera detects the first feeding unit and the first camera. When the left end of a nozzle contacts, the first fine control signal is stopped from being sent to the first driving unit.
  • the first fine control signal is a coordinate motion command of a relative position sent by the motion control unit to the first driving unit 202
  • the command parameter of the coordinate motion command of the relative position is the number of pulses of the first driving unit 202
  • the first driving unit 202 rotates according to a given number of pulses, and drives the first feeding unit 204 to move the first block 206 to the right.
  • the first driving unit 202 drives the first block 206 to move.
  • the distance accuracy can be 1 micron, so that precise fine adjustment of the moving distance of the first stop 206 can be achieved.
  • the first camera 208 is continuously observed. If the first stop 206 is just in contact with the left end of the first nozzle, the motion control command should be suspended for the first driving unit 202 to make the first block 206 and the first The left end of the nozzle is in contact and remains in contact.
  • Step 303 Send a second coarse adjustment control signal to the second driving unit, so that the second driving unit drives the second feeding unit to move toward the first nozzle, and the second camera detects that the second feeding unit moves to Stopping, by the second preset position, sending a coarse adjustment control signal to the second driving unit;
  • the second coarse control signal received by the second driving unit 203 can be jointly controlled by the computer and the motion control unit that directly issue the manipulation command.
  • the second coarse control signal may be an absolute position coordinate motion command sent by the motion control unit to the second driving unit 203, and the command parameter of the absolute position coordinate motion command is a coordinate position of the second block 207, for example, the detected
  • the position of the second stop 207 is about 10 cm from the position of the second head, and the second driving unit 203 drives the second feed unit 205 to move the second block 207 to the left by 10 cm.
  • the second block 207 After the second block 207 is moved to the left by 10 cm, it is determined by the second camera 209 whether the second block 207 enters the field of view of the second camera 209, and the second block 207 enters the field of view of the second camera 209. Two preset positions, and the second preset position is close to the right end of the first head, for example 1 mm from the right end of the first head.
  • the step is completed: the second block 207 is controlled to shift left by 10 cm according to the second coarse control signal, so that the second block 206 enters the field of view of the second camera 209, and it is determined whether the second block 207 enters the second camera for rapid observation.
  • the field of view of 209 can estimate the coordinate value of the left movement of the second block 207 in advance, and directly send a control signal to the second driving unit 203 according to the coordinate value.
  • the coordinate value of the command parameter may be increased on the basis of the second coarse control signal, and the motion is further transmitted to the second driving unit 203. Command until the second stop 207 enters the field of view of the second camera 209.
  • Step 304 Send a second fine adjustment control signal to the second driving unit, so that the second driving unit drives the second feeding unit to move toward the first nozzle, and the second camera detects the second feeding unit and the second camera.
  • the second fine control signal is stopped from being sent to the second driving unit.
  • the preset distance in the embodiment is a distance that the first nozzle needs to move relative to the second nozzle.
  • the second driving unit 203 rotates according to a given number of pulses to drive the second feeding unit.
  • 205 drives the second stop 207 to continue to move to the left.
  • the number of pulses given is equal to 1
  • the second driving unit 203 can drive the second stop 207 to a distance of 1 micrometer. Therefore, the second gear can be realized.
  • Block 207 is precisely fine-tuned for the distance traveled.
  • the second camera 209 will collect the collected second feeding unit 205 and the nozzles in each The image of the positional relationship of the moment is transmitted to the external device, and the second range finder further processes and analyzes the collected information, and controls the second range finder to detect the currently collected second feeding unit 205 and the nozzle. If the distance between the second stopper 207 and the right end of the first nozzle is just 21 micrometers, as shown in FIG. 4, the motion control command should be suspended for the second driving unit 203 to make the second stopper 207 Maintaining a current distance of 21 micrometers from the right end of the first nozzle.
  • controller and the range finder involved in the present embodiment have the same functions and functions as those of the controller and the range finder in the above embodiment, and will not be further described herein.
  • Step 305 Send a third fine adjustment control signal to the first driving unit, so that the first driving unit drives the first feeding unit to push the first nozzle to move toward the second feeding unit, and the second camera detects the nozzle.
  • the sending of the third fine adjustment control signal to the first driving unit is stopped.
  • the third fine adjustment control signal is a coordinate motion instruction of a relative position transmitted by the motion control unit to the first driving unit 202
  • the instruction parameter of the coordinate motion instruction of the relative position is the number of pulses of the first driving unit 202
  • the first driving unit 202 rotates according to a given number of pulses, and drives the first feeding unit 204 to drive the first stop 206 to push the first nozzle to the right.
  • the number of pulses given is equal to 1
  • the displacement of the first nozzle to the right can be Accurate to 1 micron, thus achieving precise fine adjustment of the right shift distance of the first stop 206.
  • the second camera 209 is observed. If the right end of the first nozzle is just in contact with the second stopper 207, the motion control command should be suspended for the first driving unit 202 to make the right end of the first nozzle and the second stopper. 207 contacts and remains in contact.
  • the step is completed: the first driving unit 202 drives the first stopper 206 to push the first nozzle to the right by 21 micrometers, so that the first nozzle is moved to the right by 21 micrometers relative to the second nozzle, and the combination of the first nozzle and the second nozzle is realized. splice.
  • the first feeding unit 202 and the second feeding unit 303 are in contact with the two ends of the first head, respectively, the first feeding unit 202 and the second feeding unit 303. It can be formed as a fixture at the same time, which facilitates the fastening of the first nozzle.
  • steps 301 and 302 are a specific implementation of step 201
  • steps 303 and 304 are a specific implementation of step 202
  • step 305 is a step 205.
  • steps 301 to 303 may also have other specific implementations, and details are not described herein again.
  • the method for realizing nozzle splicing based on the micro-feeding device provides a driving of the first feeding unit and the second feeding unit by driving the first driving unit and the second driving unit, and driving the first feeding
  • the unit is pushed to move the workpiece, and the first feeding unit and the second distance measuring unit detect the end of the first feeding unit and the workpiece in real time, and the distance between the second feeding unit and the other end of the workpiece, thereby achieving micro-increment of the workpiece.
  • the method has simple operation and high displacement precision, and meets the requirements of nozzle splicing.

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Abstract

一种微进给装置（10）及基于微进给装置（10）实现喷头拼接的方法，微进给装置（10）包括：操作台（101），其设置用于承载工件的操作区域（1011）；第一驱动单元（102）；第二驱动单元（103），第一驱动单元（102）和第二驱动单元（103）相对设置于操作区域（1011）的两侧；与第一驱动单元（102）连接的第一进给单元（104），其位于第一驱动单元（102）与第二驱动单元（103）之间；与第二驱动单元（103）连接的第二进给单元（105），其位于第一进给单元（102）与第二驱动单元（103）之间；以及测距单元（106，107）。该微进给装置（10）结构简单成本低，可实现工件的精密移动。

Description

一种微进给装置及基于微进给装置实现喷头拼接的方法 技术领域
本发明涉及打印设备制造领域，特别是涉及一种微进给装置及基于微进给装置实现喷头拼接的方法。
背景技术
在打印设备的研制过程中，为了满足用户对更高分辨的需求，可设计组合喷头来实现分辨率的提高。组合喷头应至少包含前后对齐的两个喷头，当其中一个喷头相对另一个喷头在左右方向上产生一个和喷头本身喷嘴间距一半的微小位移后，重新固定好这两个喷头，由这两个喷头形成的组合喷头打印分辨率就提高了一倍。
目前利用微进给技术实现组合喷头的拼接的技术很多，例如通过对电晶体施加电信号而引起其形变，通过这种机械形变对物体产生一个极小的位移，其位移精度一般可达到亚微米级或纳米级。这种技术产生的位移精度虽然较高，但是利用这种技术的微进给装置或设备成本较高、系统复杂。
发明内容
本发明实施方式的一个目的旨在提供一种微进给装置及基于微进给装置实现喷头拼接的方法，能够解决现有微进给装置成本高，系统复杂的技术问题。
为解决上述技术问题，本发明实施方式采用的一个技术方案是：提供一种微进给装置，包括操作台，设置有操作区域，其中，所述操作区域用于承载工件；第一驱动单元；第二驱动单元，所述第一驱动单元和所述第二驱动单元相对设置于操作区域的两侧；第一进给单元，所述第一进给单元位于所述第一驱动单元与所述第二驱动单元之间，并且所述 第一进给单元与所述第一驱动单元连接；第二进给单元，所述第二进给单元位于所述第一进给单元与所述第二驱动单元之间，并且所述第二进给单元与所述第二驱动单元连接；第一测距单元，用于检测所述第一进给单元与位于所述操作区域内的工件之间的距离；第二测距单元，用于检测所述第二进给单元与位于所述操作区域内的工件之间的距离；所述第一驱动单元用于驱动所述第一进给单元朝所述第二驱动单元方向移动，所述第二驱动单元用于，驱动所述第二进给单元朝所述第一驱动单元移动。
其中，所述第一进给单元包括第一丝杆和第一挡块，所述第一丝杆的一端与所述第一驱动单元连接，并且另一端与所述第一挡块连接；所述第二进给单元包括第二丝杆和第二挡块，所述第二丝杆的一端与所述第二驱动单元连接，并且另一端与所述第二挡块连接。
其中，所述第一挡块和所述第二挡块均为V形挡块，所述第一挡块包括第一顶角，所述第二挡块包括第二顶角，所述第一顶角与所述第一丝杆的另一端连接，所述第二顶角与所述第二丝杆的另一端连接。
其中，所述第一测距单元包括：第一摄像头和第一测距仪；所述第一摄像头设置于所述操作台上，所述第一摄像头用于拍摄所述第一挡块与所述工件的一端的第一图像，所述第一测距仪根据所述第一图像，检测所述第一挡块与所述工件的一端的距离；所述第二测距单元包括：第二摄像头和第二测距仪；所述第二摄像头设置于所述操作台上，并且所述第二摄像头与所述第一摄像头相对设置，所述第二摄像头用于拍摄所述第二挡块与所述工件的另一端的第二图像，所述第二测距仪根据所述第二图像，检测所述第二挡块与所述工件的另一端的距离。
其中，所述第一测距单元还包括：第一光源，所述第一光源设置于所述操作台上，并且所述第一光源与所述第一摄像头相对设置；所述第二测距单元还包括：第二光源，所述第二光源设置于所述操作台上，并且所述第二光源与所述第二摄像头相对设置。
其中，所述第一驱动单元和所述第二驱动单元为步进电机。
为解决上述技术问题，本发明实施方式采用的另一个技术方案是： 提供一种及基于微进给装置实现喷头拼接的方法。所述微进给装置包括：
操作台，设置有操作区域，其中，所述操作区域用于承载喷头。第一驱动单元；第二驱动单元，所述第一驱动单元和所述第二驱动单元相对设置于操作区域的两侧；第一进给单元，所述第一进给单元位于所述第一驱动单元与所述第二驱动单元之间，并且所述第一进给单元与所述第一驱动单元连接；第二进给单元，所述第二进给单元位于所述第一进给单元与所述第二驱动单元之间，并且所述第二进给单元与所述第二驱动单元连接；第一测距单元，用于检测所述第一进给单元与位于所述操作区域内的工件之间的距离；第二测距单元，用于检测所述第二进给单元与位于所述操作区域内的工件之间的距离；所述方法，包括：所述第一驱动单元根据所述第一测距单元的检测结果，驱动所述第一进给单元移动，以使所述第一进给单元与所述喷头的一端接触；所述第二驱动单元根据所述第二测距单元的检测结果，驱动所述第二进给单元移动至与所述喷头另一端相距预设距离的位置；所述第一驱动单元根据所述第二测距单元的检测结果，驱动所述第一进给单元移动所述操作区域上的喷头，以使所述喷头另一端与所述第二进给单元接触。
其中，所述根据所述第一测距单元的检测结果，驱动所述第一进给单元移动，以使所述第一进给单元与所述喷头的一端接触，包括：向所述第一驱动单元发送第一粗调控制信号，以使所述第一驱动单元驱动所述第一进给单元朝向所述喷头的方向进行移动；在所述第一测距单元检测到所述第一进给单元移动至第一预设位置时，停止对所述第一驱动单元发送粗调控制信号，并且向所述第一驱动单元发送第一精调控制信号；所述第一驱动单元根据第一精调控制信号驱动所述第一进给单元朝向所述喷头一端的方向进行移动；在所述第一测距单元检测到所述第一进给单元与所述喷头一端接触时，停止向所述第一驱动单元发送精调控制信号
其中，所述根据所述第二测距单元的检测结果，驱动所述第二进给单元移动至与所述喷头另一端相距预设距离的位置，包括：对所述第二 驱动单元发送第二粗调控制信号，以使所述第二驱动单元驱动所述第二进给单元朝向所述喷头进行移动；在所述第二测距单元检测到所述第二进给单元移动至第二预设位置时，停止对所述第二驱动单元发送粗调控制信号，并且向所述第二驱动单元发送第二精调控制信号；所述第二驱动单元根据第二精调控制信号驱动所述第二进给单元朝向所述喷头另一端的方向进行移动；在所述第二测距单元检测到所述第二进给单元移动至与所述喷头另一端相距预设距离的位置时，停止向所述第二驱动单元发送第二精调控制信号。
其中，所述根据所述第二测距单元的检测结果，驱动所述第一进给单元移动所述操作区域上的喷头，以使所述喷头另一端与所述第二进给单元接触，包括：对所述第一驱动单元发送第三精调控制信号，以使所述第一驱动单元驱动所述第一进给单元推动所述喷头朝向所述第二进给单元的方向进行移动；在所述第二测距单元检测到所述喷头另一端与所述第二进给单元接触时，停止向所述第一驱动单元发送第三精调控制信号
本发明实施方式的有益效果是：区别于现有技术的情况，本发明提供的微进给装置及基于微进给装置实现喷头拼接的方法以较低的成本和简单的结构通过各个单元的精密配合可实现工件的精密移动，实现高性价比。
附图说明
图1是本发明实施方式提供的一种微进给装置结构示意图；
图2是图1中测距单元的结构示意图；
图3是本发明另一实施方式提供的一种微进给装置结构示意图；
图4是图3中视图A的放大示意图；
图5是本发明一实施方式提供的一种基于微进给装置实现喷头拼接的方法的流程示意图；
图6是本发明另一实施方式提供的一种基于微进给装置实现喷头拼 接的方法的具体实现的流程示意图。
具体实施方式
请参阅图1，图1为本发明实施方式提供的一种微进给装置10。如图1所示，微进给装置10包括操作台101、第一驱动单元102、第二驱动单元103、第一进给单元104、第二进给单元105、第一测距单元106和第二测距单元107。
操作台101上设置有操作区域1011，操作区域1011位于操作台101的中间位置，操作区域1011用于承载工件。第一驱动单元102和第二驱动单元103相对设置于操作区域1011的两侧。第一进给单元104位于第一驱动单元102和二驱动单元103之间，并且第一进给单元104的一端与第一驱动单元102连接。第二进给单元105位于第二驱动单元103和第一进给单元104之间，并且第二进给单元105的一端与第二驱动单元103连接。第一驱动单元102可以驱动第一进给单元104朝向第二驱动单元103运动，当将加工工件置于操作区域1011上时，第一驱动单元102还可以驱动第一进给单元104推动工件移动。同理，第二驱动单元103可以驱动第二进给单元105朝向第一驱动单元102的方向运动，第二驱动单元103还可以驱动第二进给单元105推动工件移动。
需要说明的是，本实施方式提供的微进给装置为具有特定精度的装置，因此该微进给装置中各个零件的装配加工，均有精度要求。例如，本实施方式中的第一驱动单元102和第二驱动单元103可以为通过控制脉冲个数来控制位移量，用以准确定位工件位置的步进电机，当然在其他替代性实施方式中，还可以为伺服电机等。本实施方式中的第一进给单元104和第一进给单元105为可以跟随驱动单元移动的具有传动功能的零件，当然，该传动零件为具有特定精度要求的零件，例如具有的定精度等级的丝杆。当第一驱动单元102和第二驱动单元103为步进电机，第一进给单元104和第二进给单元105为丝杆时，步进电机和丝杆可以通过联轴器连接。
第一测距单元106设置于操作区域1011相应的位置，在第一驱动 单元102驱动第一进给单元104朝向第二驱动单元103运动时，第一测距单元106可以检测第一进给单元104与位于操作区域内的工件之间的距离。同理，在第二驱动单元103驱动第二进给单元105朝向第一驱动单元102的方向运动时，第二测距单元107可以检测第二进给单元105与位于所述操作区域内的工件之间的距离。
当将工件置于如图1所示的操作区域1011上时，实现工件朝某一方向移动，例如朝向第二驱动单元102的方向移动时的过程可以为：第一驱动单元102根据第一测距单元106的检测结果，驱动第一进给单元104移动，以使第一进给单元105与工件的左端接触；第二驱动单元103进一步根据第二测距单元107的检测结果，驱动第二进给单元105移动至与工件右端相距预设距离的位置；第一驱动单元102进一步根据第二测距单元105的检测结果，驱动第一进给单元104移动操作区域上的工件，以使工件右端与第二进给单元105接触。本实施方式提供的微进给装置成本较低，且系统简单，方便操作人员操作，性价比高。
为了精确判断工件在移动过程中与第一进给单元104和第二进给单元105的接触情况，在一些实施方式中，如图2所示，第一测距单元106包括：第一测距仪1061和第一摄像头1062；第二测距单元107包括：第二测距仪1071和第二摄像头1072。下面对第一测距单元106的测距方式，进行详细说明。在第一进给单元104朝向第二驱动单元103运动时，第一摄像头1062可以将采集到的第一进给单元104与工件在各个时刻的位置关系的图像，传输给外接设备，测距仪1061进一步对采集到的信息进行处理和分析，并控制测距仪1061检测当前采集到的第一进给单元104与工件之间的距离，以确定第一进给单元104与工件的位置关系。本实施方式中，第二测距单元107的第二测距仪1071和第二摄像头1072的结构和功能与第一测距单元106中第一测距仪1061和第一摄像头1062的结构和功能相同，在此不再赘述。当然，在其他替代实施方式中，第一测距单元106和第二测距单元107的测距方式还可以为激光测距、超声波测距等。
在一些实施方式中，如图1所示，第一测距单元106还包括：第一 光源1063；第二测距单元107还包括：第二光源1073。其中，如图1所示，第一摄像头1062和第一光源1063相对设置于操作台101上；第二摄像头1072和第二光源1073相对设置于操作台101上。
当利用第一摄像头1062观察工件左端与第一进给单元104的接触情况时，点亮第一光源1063，通过补光可使第一摄像头1062拍摄的图像更清晰，以更精确确定第一进给单元104移动过程中第一进给单元1041与工件的接触情况。同理，通过第二光源1073的补光，可使第二摄像头1072拍摄的图像更清晰，以更精确确定第二进给单元105移动过程中第二进给单元105与工件的接触情况。需要说明的是，图1中第一摄像头1062和第一光源1063在操作区域1011上的位置以及第二摄像头1072和第二光源1073在操作区域1011上的位置只是本实施方式中一种位置实现方式而已，并不对该位置进行限定，只需满足便于测量工件与第一进给单元104和第二进给单元105与工件的接触情况即可。
在第一进给单元104和第二进给单元105分别与工件接触或者需要推动工件移动时，为了配合工件的不同形状尺寸，例如，工件形状不规则，可在第一进给单元104和第二进给单元105的一端分别设置配合工件形状和尺寸要求的挡块，当需要推动无规则的工件移动时，可通过第一进给单元104和第二进给单元105推动挡块进行移动，并通过挡块与工件的配合，进一步高效精确的推动工件移动。具体可参考图1，第一进给单元104可包括第一丝杆1041和第一挡块1042，第一丝杆1041的一端与第一驱动单元102连接，并且第一丝杆1041的另一端与第一挡块1042连接。进一步地，在每次需要推动不同形状尺寸的工件进行移动时，可以直接更换挡块的尺寸以满足要求。在本实施方式中，第一挡块1042可以为V形挡块，并且V形挡块的顶角与第一丝杆1041的另一端固定，V形挡块的开口朝向第二进给单元105，当需要对移动后的工件进行固定时，工作人员可通过V形挡块的开口部分固定工件。同理，第二进给单元105可包括第二丝杆1051和第二挡块1052，第二丝杆1051的一端与第二驱动单元103连接，并且第二丝杆1051的另一端与第二挡块1052连接。第二挡块1052可以为V形挡块，并且V形挡块的顶角 与第二丝杆1051的另一端固定，V形挡块的开口朝向第一进给单元104，当需要对移动后的工件进行固定时，工作人员可通过V形挡块的开口部分固定工件，在其他实施方式中，第一挡块1042和第二挡块1052还可以为其他形状。
在一些实施方式中，工件的微进给移动是相对另一工件或参照物的移动，因此，可在微进给装置上设置定位工件的定位块，以实现工件的相对移动。具体请参阅图3，图3为本实施方式提供的另一种微进给装置20，该微进给装置20与图1的区别在于微进给装置20还包括如图3所示的第一定位块212、第二定位块213和第三定位块214。其中，第一定位块212固定设置于操作区域2011内，并且位于第一进给单元204和第二进给单元205之间，用于固定工件的初始位置。第二定位块213和第三定位块214，固定设置于操作区域2011内，并且第二定位块213如图3所示，与第一定位块212对齐设置，用于固定参照物或另一工件。
本实施方式提供的微进给装置通过第一驱动单元和第二驱动单元的相互配合，以驱动第一进给单元和第二进给单元移动，以及驱动第一进给单元和第二进给单元推动工件移动，并通过第一测距单元和第二测距单元实时检测第一进给单元与工件的一端，以及第二进给单元与工件另一端的距离，来实现工件的微进给移动。该微进给装置以较低的成本和简单的结构通过各个单元的精密配合可实现工件的精密移动，实现高性价比。
为了详细介绍微进给装置的工作过程，本实施方式还提供一种基于微进给装置实现喷头拼接的方法。
在喷墨打印设备的制造过程中，需要将多个打印头组合拼装，形成一个复合的喷头组件，以实现较高的打印分辨率。例如要将位于第一排的600分辨率的喷头和位于第二排的600分辨率的喷头进行分辨率的提升，则应以第一排的喷头为基准，使第二排的喷头相对第一排的喷头向右或向左移动某一位移值，这样组合起来的两排喷头，就可以实现1200的打印分辨率。其中，该位移值由喷头喷嘴间距的一半来确定，并且该位移量一般在微米级，例如，移动21微米，其中21微米的位移，可以 借助于本实施方式提供的微进给装置20来实现。下面结合图3和图4进行详细阐述该微进给装置20来实现喷头拼接的具体过程。
请参阅图3，图3所示的微进给装置20，可实现喷头的拼接，微进给装置20包括：操作台201、第一驱动单元202、第二驱动单元203、第一进给单元204、第二进给单元205、第一挡块206、第二挡块207、第一摄像头208、第二摄像头209、第一光源210、第二光源211第一定位块212、第二定位块213和第三定位块214。微进给装置20的结构、功能均与上述实施方式中的微进给装置10相同，对于微进给装置20的具体实现可以参阅上述实施方式，此处不再一一赘述。
利用微进给装置20，实现第一喷头相对第二喷头的微位移，如图5所示，包括如下步骤:
步骤201：第一驱动单元根据第一测距单元的检测结果，驱动第一进给单元移动，以使第一进给单元与喷头的一端接触。
本实施方式中，第一驱动202单元为可以接收控制信号的驱动电机，第一驱动单元202接收控制信号，控制第一驱动单元202驱动第一进给单元204朝向第一喷头的方向进行移动，在第一测距单元检测到第一进给单元204移动到与工件的左端相接触时的，停止对第一驱动单元202发送控制信号。
步骤202：第二驱动单元根据第二测距单元的检测结果，驱动第二进给单元移动至与喷头另一端相距预设距离的位置。
第二驱动单元203接收控制信号，驱动第二进给单元205朝向第一喷头的方向进行移动，在第二测距单元检测到第二进给单元205移动到与工件的右端相距预设距离时，停止对第二驱动单元203发送控制信号。本实施方式中的预设距离为第一喷头需要相对第二喷头移动的距离，例如该预设距离为21微米时，在第二驱动单元203驱动第二进给单元205移动时，通过第二测距单元实施检测第二进给单元205与第一喷头的距离，如果第二进给单元205与第一喷头的右端的距离刚好为21微米，此时应暂停对第二驱动单元203发送运动控制指令，使第二进给单元205与第一喷头右端保持当前相距21微米距离的状态。
步骤203：第一驱动单元根据第二测距单元的检测结果，驱动第一进给单元移动操作区域上的喷头，以使喷头另一端与第二进给单元接触。
第一驱动单元202进一步接收控制信号，控制第一驱动单元202驱动第一进给单元204推动第一喷头进行移动，在第二测距单元检测到第一喷头的右端刚好与第二进给单元205相接触时，此时应暂停对第一驱动单元202发送运动控制指令，使第一喷头右端与第二进给单元20接触并保持接触状态。
在第一喷头移动到合适位置后，第一进给单元202和第二进给单元303，分别与与第一喷头的两端保持接触状态，第一进给单元202和第二进给单元303可同时形成为一个夹具，为第一喷头的紧固提供便利。
本实施方式提供的基于微进给装置实现喷头拼接的方法，通过第一驱动单元和第二驱动单元的相互配合，以驱动第一进给单元和第二进给单元移动，以及驱动第一进给单元和第二进给单元推动工件移动，并通过第一测距单元和第二测距单元实时检测第一进给单元与工件的一端，以及第二进给单元与工件另一端的距离，来实现工件的微进给移动。该方法操作简单，位移精度高。
本实施方式还提供一种基于微进给装置实现喷头拼接的具体实现方法。如图6所示，基于微进给装置实现喷头拼接的方法的步骤如下:
步骤301：向第一驱动单元发送第一粗调控制信号，以使第一驱动单元驱动第一进给单元朝向第一喷头的方向进行移动，在第一摄像头检测到第一进给单元移动至第一预设位置时，停止对第一驱动单元发送粗调控制信号。
本实施方式中，第一驱动单元202接收的第一粗调控制信号，可以由直接发出操控命令的计算机和运动控制单元共同控制。第一粗调控制信号具体可以为运动控制单元向第一驱动单元202发送的绝对位置坐标运动指令，该绝对位置坐标运动指令的指令参数为第一挡块206的坐标位置，例如，检测到第一挡块206的坐标距离第一喷头的位置约为10cm，则第一驱动单元202驱动第一进给单元204带动第一挡块206向右移动 10cm的位置。在第一挡206块向右移动10cm的位置后，通过第一摄像头208判断第一挡块206是否进入第一摄像头208的视野，第一挡块206进入第一摄像头208视野的位置即为第一预设位置，并且第一预设位置靠近第一喷头的左端，例如距离第一喷头左端1mm。
该步骤即完成：根据第一粗调控制信号控制第一挡块206右移10cm，使得第一挡块206进入第一摄像头208的视野，为了快速观察判断第一挡块206是否进入第一摄像头208的视野，可以预先估算出第一挡块206右移的坐标值，并根据该坐标值，直接对第一驱动单元202发送控制信号。在本步骤中，如果第一挡块206未进第一摄像头208的视野，则可以在第一粗调控制信号的基础上将指令参数的坐标值加大，继续向第一驱动单元202发送运动指令。直到第一挡块206进入第一摄像头208的视野。
步骤302：向第一驱动单元发送第一精调控制信号，以使第一驱动单元驱动第一进给单元朝向第一喷头的方向进行移动，在第一摄像头检测到第一进给单元与第一喷头的左端接触时，停止向第一驱动单元发送第一精调控制信号。
第一精调控制信号为由运动控制单元向第一驱动单元202发送的相对位置的坐标运动指令，该相对位置的坐标运动指令的指令参数为第一驱动单元202的脉冲数，第一驱动单元202按照给定的脉冲数旋转，驱动第一进给单元204带动第一挡块206向右移动，当每次所给的脉冲数等于1时，第一驱动单元202带动第一挡块206移动距离精度可以为1微米，因此，可以实现对第一挡块206移动距离的精确微调。微调过程中，继续观察第一摄像头208，如果第一挡块206刚好与第一喷头的左端接触，此时应暂停对第一驱动单元202发送运动控制指令，使第一挡块206与第一喷头左端形成接触并保持接触状态。
步骤303：向第二驱动单元发送第二粗调控制信号，以使第二驱动单元驱动第二进给单元朝向第一喷头的方向进行移动，在第二摄像头检测到第二进给单元移动至第二预设位置时，停止对第二驱动单元发送粗调控制信号；
本实施方式中，第二驱动单元203接收的第二粗调控制信号，可以由直接发出操控命令的计算机和运动控制单元共同控制。第二粗调控制信号具体可以为运动控制单元向第二驱动单元203发送的绝对位置坐标运动指令，该绝对位置坐标运动指令的指令参数为第二挡块207的坐标位置，例如，检测到第二挡块207的坐标距离第二喷头的位置约为10cm，则第二驱动单元203驱动第二进给单元205带动第二挡块207向左移动10cm的位置。
在第二挡207块向左移动10cm的位置后，通过第二摄像头209判断第二挡块207是否进入第二摄像头209的视野，第二挡块207进入第二摄像头209视野的位置即为第二预设位置，并且第二预设位置靠近第一喷头的右端，例如距离第一喷头右端1mm。
该步骤即完成：根据第二粗调控制信号控制第二挡块207左移10cm，使得第二挡块206进入第二摄像头209的视野，为了快速观察判断第二挡块207是否进入第二摄像头209的视野，可以预先估算出第二挡块207左移的坐标值，并根据该坐标值，直接对第二驱动单元203发送控制信号。在本步骤中，如果第二挡块207未进第二摄像头209的视野，则可以在第二粗调控制信号的基础上将指令参数的坐标值加大，继续向第二驱动单元203发送运动指令，直到第二挡块207进入第二摄像头209的视野。
步骤304：向第二驱动单元发送第二精调控制信号，以使第二驱动单元驱动第二进给单元朝向第一喷头的方向进行移动，在第二摄像头检测到第二进给单元与第一喷头的右端相距预设距离的位置时，停止向第二驱动单元发送第二精调控制信号。
本实施方式中的预设距离为第一喷头需要相对第二喷头移动的距离，例如该预设距离为21微米时，第二驱动单元203按照给定的脉冲数旋转，驱动第二进给单元205带动第二挡块207继续左移，当每次所给的脉冲数等于1时，第二驱动单元203带动第二挡块207移动距离精度可以为1微米，因此，可以实现对第二挡块207移动距离的精确微调。微调过程中，第二摄像头209将采集到的第二进给单元205与喷头在各 个时刻的位置关系的图像，传输给外接设备，第二测距仪进一步对采集到的信息进行处理和分析，并控制第二测距仪检测当前采集到的第二进给单元205与喷头之间的距离，如果第二挡块207与第一喷头的右端的距离刚好为21微米，如图4所示，此时应暂停对第二驱动单元203发送运动控制指令，使第二挡块207与第一喷头右端保持当前相距21微米距离的状态。
需要说明的是，本实施方式中涉及到的控制器和测距仪与上述实施方式中控制器和测距仪的功能、作用相同，在次不做进一步赘述。
步骤305：向第一驱动单元发送第三精调控制信号，以使第一驱动单元驱动第一进给单元推动第一喷头朝向第二进给单元的方向进行移动，在第二摄像头检测到喷头的右端与第二进给单元接触时，停止向第一驱动单元发送第三精调控制信号。
第三精调控制信号为由运动控制单元向第一驱动单元202发送的相对位置的坐标运动指令，该相对位置的坐标运动指令的指令参数为第一驱动单元202的脉冲数，第一驱动单元202按照给定的脉冲数旋转，驱动第一进给单元204带动第一挡块206推动第一喷头右移，当每次所给的脉冲数等于1时，第一喷头右移的位移量可以精确到1微米，因此，实现对第一挡块206右移距离的精确微调。微调过程中，观察第二摄像头209，如果第一喷头的右端刚好与第二挡块207接触，此时应暂停对第一驱动单元202发送运动控制指令，使第一喷头右端与第二挡块207接触并保持接触状态。
该步骤即完成：第一驱动单元202，驱动第一挡块206推动第一喷头右移21微米，以使第一喷头相对第二喷头右移21微米，实现第一喷头和第二喷头的组合拼接。
在第一喷头移动到合适位置后，第一进给单元202和第二进给单元303，分别与与第一喷头的两端保持接触状态，第一进给单元202和第二进给单元303可同时形成为一个夹具，为第一喷头的紧固提供便利。
值得说明的是：步骤301和302为步骤201的一种具体实现，步骤303和304为步骤202的一种具体实现，步骤305为步骤205的一种具 体实现，当然，在其它替代实施方式中，步骤301至303也可以有其它具体实现，此处不再一一赘述。
本实施方式提供的基于微进给装置实现喷头拼接的方法，通过第一驱动单元和第二驱动单元的相互配合，以驱动第一进给单元和第二进给单元移动，以及驱动第一进给单元推动工件移动，并通过第一测距单元和第二测距单元实时检测第一进给单元与工件的一端，以及第二进给单元与工件另一端的距离，来实现工件的微进给移动。该方法操作简单，且位移精度高，满足喷头拼接的要求。
以上所述仅为本发明的实施方式，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (10)

  1. 一种微进给装置，其特征在于，包括：
    操作台，设置有操作区域，其中，所述操作区域用于承载工件；
    第一驱动单元；
    第二驱动单元，所述第一驱动单元和所述第二驱动单元相对设置于所述操作区域的两侧；
    第一进给单元，所述第一进给单元位于所述第一驱动单元与所述第二驱动单元之间，并且所述第一进给单元与所述第一驱动单元连接,所述第一驱动单元用于驱动所述第一进给单元朝所述第二驱动单元方向移动；
    第二进给单元，所述第二进给单元位于所述第一进给单元与所述第二驱动单元之间，并且所述第二进给单元与所述第二驱动单元连接,所述第二驱动单元用于驱动所述第二进给单元朝所述第一驱动单元移动；
    第一测距单元，用于检测所述第一进给单元与位于所述操作区域内的工件之间的距离；
    第二测距单元，用于检测所述第二进给单元与位于所述操作区域内的工件之间的距离。
  2. 根据权利要求1所述的微进给装置，其特征在于,
    所述第一进给单元包括第一丝杆和第一挡块，所述第一丝杆的一端与所述第一驱动单元连接，并且另一端与所述第一挡块连接；
    所述第二进给单元包括第二丝杆和第二挡块，所述第二丝杆的一端与所述第二驱动单元连接，并且另一端与所述第二挡块连接。
  3. 根据权利要求2所述的微进给装置，其特征在于,
    所述第一挡块和所述第二挡块均为V形挡块，所述第一挡块包括第一顶角，所述第二挡块包括第二顶角，所述第一顶角与所述第一丝杆的另一端连接，所述第二顶角与所述第二丝杆的另一端连接。
  4. 根据权利要求1所述的微进给装置，其特征在于,
    所述第一测距单元包括：第一摄像头和第一测距仪；
    所述第一摄像头设置于所述操作台上，所述第一摄像头用于拍摄所述第一挡块与所述工件的一端的第一图像，所述第一测距仪根据所述第一图像，检测所述第一挡块与所述工件的一端的距离；
    所述第二测距单元包括：第二摄像头和第二测距仪；
    所述第二摄像头设置于所述操作台上，并且所述第二摄像头与所述第一摄像头相对设置，所述第二摄像头用于拍摄所述第二挡块与所述工件的另一端的第二图像，所述第二测距仪根据所述第二图像，检测所述第二挡块与所述工件的另一端的距离。
  5. 根据权利要求4所述的微进给装置，其特征在于,
    所述第一测距单元还包括：第一光源，所述第一光源设置于所述操作台上，并且所述第一光源与所述第一摄像头相对设置；
    所述第二测距单元还包括：第二光源，所述第二光源设置于所述操作台上，并且所述第二光源与所述第二摄像头相对设置。
  6. 根据权利要求1所述的微进给装置，其特征在于,所述第一驱动单元和所述第二驱动单元为步进电机。
  7. 一种基于微进给装置实现喷头拼接的方法，其特征在于，所述微进给装置包括：
    操作台，设置有操作区域，其中，所述操作区域用于承载喷头。
    第一驱动单元；第二驱动单元，所述第一驱动单元和所述第二驱动单元相对设置于操作区域的两侧；
    第一进给单元，所述第一进给单元位于所述第一驱动单元与所述第二驱动单元之间，并且所述第一进给单元与所述第一驱动单元连接；
    第二进给单元，所述第二进给单元位于所述第一进给单元与所述第二驱动单元之间，并且所述第二进给单元与所述第二驱动单元连接；
    第一测距单元，用于检测所述第一进给单元与位于所述操作区域内的工件之间的距离；
    第二测距单元，用于检测所述第二进给单元与位于所述操作区域内的工件之间的距离；
    所述方法，包括：
    所述第一驱动单元根据所述第一测距单元的检测结果，驱动所述第一进给单元移动，以使所述第一进给单元与所述喷头的一端接触；
    所述第二驱动单元根据所述第二测距单元的检测结果，驱动所述第二进给单元移动至与所述喷头另一端相距预设距离的位置；
    所述第一驱动单元根据所述第二测距单元的检测结果，驱动所述第一进给单元移动所述操作区域上的喷头，以使所述喷头另一端与所述第二进给单元接触。
  8. 根据权利要求7所述的实现喷头拼接的方法，其特征在于，
    所述根据所述第一测距单元的检测结果，驱动所述第一进给单元移动，以使所述第一进给单元与所述喷头的一端接触，包括：
    向所述第一驱动单元发送第一粗调控制信号，以使所述第一驱动单元驱动所述第一进给单元朝向所述喷头的方向进行移动；
    在所述第一测距单元检测到所述第一进给单元移动至第一预设位置时，停止对所述第一驱动单元发送粗调控制信号，并且向所述第一驱动单元发送第一精调控制信号；
    所述第一驱动单元根据第一精调控制信号驱动所述第一进给单元朝向所述喷头一端的方向进行移动；
    在所述第一测距单元检测到所述第一进给单元与所述喷头一端接触时，停止向所述第一驱动单元发送精调控制信号。
  9. 根据权利要求8所述的实现喷头拼接的方法，其特征在于，
    所述根据所述第二测距单元的检测结果，驱动所述第二进给单元移动至与所述喷头另一端相距预设距离的位置，包括：
    对所述第二驱动单元发送第二粗调控制信号，以使所述第二驱动单元驱动所述第二进给单元朝向所述喷头进行移动；
    在所述第二测距单元检测到所述第二进给单元移动至第二预设位置时，停止对所述第二驱动单元发送粗调控制信号，并且向所述第二驱动单元发送第二精调控制信号；
    所述第二驱动单元根据第二精调控制信号驱动所述第二进给单元朝向所述喷头另一端的方向进行移动；
    在所述第二测距单元检测到所述第二进给单元移动至与所述喷头另一端相距预设距离的位置时，停止向所述第二驱动单元发送第二精调控制信号。
  10. 根据权利要求9所述的实现喷头拼接的方法，其特征在于，
    所述根据所述第二测距单元的检测结果，驱动所述第一进给单元移动所述操作区域上的喷头，以使所述喷头另一端与所述第二进给单元接触，包括：
    对所述第一驱动单元发送第三精调控制信号，以使所述第一驱动单元驱动所述第一进给单元推动所述喷头朝向所述第二进给单元的方向进行移动；
    在所述第二测距单元检测到所述喷头另一端与所述第二进给单元接触时，停止向所述第一驱动单元发送第三精调控制信号。
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CN101164785A (zh) * 2006-10-18 2008-04-23 精工爱普生株式会社 液体喷头的对准装置及其对准方法
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JPH08230197A (ja) * 1995-02-27 1996-09-10 Seikosha Co Ltd インクジェットヘッドの製造方法
CN2920653Y (zh) * 2006-04-04 2007-07-11 星云电脑股份有限公司 大型喷墨打印机的打印头调整模块
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