WO2018126514A1

WO2018126514A1 - Spray coating control method

Info

Publication number: WO2018126514A1
Application number: PCT/CN2017/073745
Authority: WO
Inventors: 林文渊
Original assignee: 苏州市铂汉塑胶五金有限公司
Priority date: 2017-01-09
Filing date: 2017-02-16
Publication date: 2018-07-12
Also published as: CN108284048A

Abstract

Disclosed is a spray coating control method, belonging to the field of spray coating devices. The spray coating control method comprises: S1, driving movement of one or more spray guns from a starting point to a starting point of a spray coating process in a first motion state, and controlling the spray guns so that same execute a first action during the process of moving to the starting point of the spray coating process; S2, driving movement of the spray guns from the starting point of the spray coating process to an end point of the spray coating process in a second motion state, and controlling the spray guns so that same execute a second action during the process of moving to the end point of the spray coating process; and S3, driving movement of the spray guns from the end point of the spray coating process to an end point in a third motion state, and controlling the spray guns so that same execute the first action during the process of moving to the end point. In the present invention, spray guns are controlled by means of a sensing technique or a programmable logic control technique so that same close spray valves in an unnecessary spray process, i.e. a range except a spray coating process, thus avoiding unnecessary spraying of coatings, and substantially saving on coating energy.

Description

Spray control method

Technical field

The invention relates to the field of spraying equipment, and in particular to a spraying control method.

Background technique

Spraying is a coating method applied to the surface of an object by means of a spray gun or a dish atomizer, which is dispersed into a uniform and fine mist by means of pressure or centrifugal force. The products that need to be sprayed are placed on the assembly line, and the production of high-efficiency spraying operations can be achieved through the movement of the assembly line. It is suitable for manual operation and industrial automation production. The application range is mainly in the fields of hardware, plastics, furniture, military, shipbuilding, etc. It is the most common coating method used today.

In the prior art, the rail for moving the spray gun is erected above the pipeline, and the spray gun reciprocates along the guide rail, and the direction of the reciprocating motion is criss-crossed with the transport direction of the pipeline. On the one hand, the length of the guide rail is equal to the width of the pipeline. Then, at the position of the two ends of the guide rail, the thickness of the sprayed by the spray gun to the workpiece is thicker than the thickness of the sprayed portion in the middle portion of the guide rail, and it is difficult to completely spray the side surface of the workpiece because the speed of the spray gun is slower at both ends of the guide rail; On the one hand, if the length of the guide rail is larger than the width of the pipeline, then the paint sprayed by the spray gun is sprayed on the unnecessary spraying area at both ends of the guide rail (the gun moves at a slow speed), which causes waste of paint and expands the cost of raw materials.

The prior art has at least the following disadvantages:

1. The spraying quality is not high and the spraying efficiency is low;

2. Spray the paint in the non-essential spraying area, causing waste of the spraying materials.

Summary of the invention

In order to solve the problems of the prior art, the present invention provides a spray control method, which saves spraying materials and improves the spraying effect. The technical solution is as follows:

In one aspect, the invention provides a spray control method, the method comprising the steps of:

S1, driving one or more spray guns to move from a starting point to a starting point of a spraying stroke in a first motion state, and controlling the spray gun to perform a first action during the moving to a starting point of the spraying stroke;

S2, driving the spray gun to move from a starting point of the spraying stroke to an ending point of the spraying stroke in a second motion state, and controlling the spray gun to perform a second action during the moving to the end point of the spraying stroke;

S3. Driving the spray gun to move from the end of the spray stroke to the end point in a third motion state, and during the moving to the end point, controlling the spray gun to perform the first action.

Preferably, the spraying control method further comprises the following steps:

S4, driving the spray gun to move from the end point to the end of the spray stroke in a fourth motion state, and controlling the spray gun to perform the first action during the moving to the end of the spray stroke;

S5, driving the spray gun to move from the end of the spraying stroke to the starting point of the spraying stroke in a fifth motion state, and controlling the spray gun to perform the second action during the moving to the starting point of the spraying stroke;

S6. Driving the spray gun to move from a starting point of the spraying stroke to a starting point in a sixth motion state, and controlling the spray gun to perform the first action during the moving to the starting point.

Further, the spray control method includes repeatedly performing steps S1-S6.

Optionally, the spraying control method further comprises determining, by the detection result of the sensor, whether the spray gun moves to a spray stroke start point or a spray stroke end point.

Optionally, the spraying control method further comprises the steps of: setting a starting point and a starting point of the spraying stroke, a starting point of the spraying stroke and an ending point of the spraying stroke, and a length between the end point and the end point of the spraying stroke; when the spray gun moves from the starting point and moves the distance When the length between the starting point and the starting point of the spraying stroke is reached, or when the distance from the end point is moved and the moving distance reaches the end point and the end point of the spraying stroke, the spray gun is controlled to perform the first action; when the spray gun moves from the starting point of the spraying stroke and moves the distance The spray gun is controlled to perform the second action when the length between the start of the spray stroke and the end of the spray stroke is reached, or when the distance from the end of the spray stroke is moved and the travel distance reaches the length between the end of the spray stroke and the start of the spray stroke.

In another aspect, the present invention provides a spray control apparatus including a drive module and a valve control module.

The driving module is configured to drive one or more spray guns to move between a starting point, a starting point of a spraying stroke, an end point of the spraying stroke, and an ending point;

The valve control module is used to control the spray valve closing of the spray gun during the movement between the starting point and the starting point of the spraying stroke, or between the end point and the end point of the spraying stroke; for the spray gun between the starting point of the spraying stroke and the end of the spraying stroke During the movement, the injection valve that controls the spray gun is opened.

Optionally, the spraying control device further includes a sensing module, wherein the sensing module is respectively disposed at a starting point of the spraying stroke and an ending end of the spraying stroke, and determining whether the spray gun moves to a starting point of the spraying stroke according to the sensing result of the sensing module or The end of the spray stroke.

Preferably, the sensing module is a CCD sensor, an opposite sensor or a reflective sensor.

Optionally, the spraying control device further includes a distance setting unit for setting a starting point and a starting point of the spraying stroke, a starting point of the spraying stroke and an ending point of the spraying stroke, and an end point and an ending point of the spraying stroke. Long Degree; the distance control unit is configured to when the spray gun moves from the starting point and the moving distance reaches a length between the starting point and the starting point of the spraying stroke, or when the moving distance reaches the length between the end point and the end of the spraying stroke, Triggering the valve control module to control the spray gun to perform the first action; when the spray gun moves from the start point of the spray stroke and the moving distance reaches the length between the start point of the spray stroke and the end of the spray stroke, or moves from the end of the spray stroke and the moving distance reaches the spray The valve control module is triggered to control the spray gun to perform the second action when the length between the end of the stroke and the start of the spray stroke is reached.

Further, the present invention also provides an automatic control spray gun that is automatically controlled using the above spray control method.

The beneficial effects brought by the technical solutions provided by the present invention are as follows:

1) In the non-essential injection stroke, control the spray gun to close the injection valve, reduce the unnecessary injection of paint, save paint and reduce cost;

2) Control the uniform movement of the spray gun during the spraying stroke to improve the uniformity of the workpiece spraying and improve the spraying quality.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention. Other drawings may also be obtained from those of ordinary skill in the art in light of the inventive work.

1 is a flow chart of a spray control method according to an embodiment of the present invention;

2 is a flow chart of a single reciprocating spray control method according to an embodiment of the present invention;

3 is a flow chart of a multiple reciprocating spray control method provided by an embodiment of the present invention;

4 is a flow chart of a sensor-based spray control method according to an embodiment of the present invention;

FIG. 5 is a flowchart of a spray control method based on a programmable controller according to an embodiment of the present invention; FIG.

FIG. 6 is a block diagram of a spray control device according to an embodiment of the invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is an embodiment of the invention, but not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of the present invention.

It is to be understood that the terms "first", "second" and the like in the specification and claims of the present invention are used to distinguish similar objects, and are not necessarily used to describe a particular order or order. It should be understood that the data used in this way is The embodiments of the invention described herein can be implemented in a sequence other than those illustrated or described herein. In addition, the terms "comprises" and "comprises" and "the" and "the" are intended to cover a non-exclusive inclusion, for example, a process, method, device, product or device that comprises a series of steps or units is not necessarily limited to Those steps or units may include other steps or units not explicitly listed or inherent to such processes, methods, products or devices.

Embodiment 1: There are many ways to spray the workpiece. Different workpieces can be used for different sizes and shapes of the workpiece. The embodiment of the invention provides a one-way spray control method, which is preferably applied to a micro device. For painting, because the area of the device with paint is relatively small, only one-time single painting of the device is required. Referring to Figure 1, the method flow includes:

S101. Drive the spray gun to move from the starting point to the starting point of the spraying stroke in a first motion state, and control the spray gun to perform the first action during the moving to the starting point of the spraying stroke.

Specifically, the initial state of the spray gun is stationary at the starting point. When the control is started, the spray gun starts to move from the starting point and accelerates toward the starting point of the spraying stroke, since the starting point of the spraying stroke has not been reached (ie, the spray gun has not entered the spraying). Trip), therefore, the gun is off during this time. It should be noted that the acceleration state of the spray gun can continue until the process of moving from the starting point to the starting point of the spraying stroke, or can be accelerated in the early part of the process, and then moved to the starting point of the spraying stroke at a constant speed state, that is, the first The motion state includes two cases, the first case is continuous acceleration, and the second case is to accelerate to a predetermined speed first, and then continue to be uniform. Another point is that the first action is preferably a closing action, but the invention can also be implemented if the spray gun is pre-opened before reaching the start of the spraying stroke. Therefore, the first action also includes two cases. The first case is to continuously close the action, and the second case is to close and then open the action.

Specifically, the spraying stroke is defined as a distance stroke between the starting point of the spraying stroke of the spray gun and the end point of the spraying stroke, and the starting point of the spraying stroke is defined as the stroke of the spray gun corresponding to the timing at which the sprayed paint of the spray gun can start to be sprayed onto the surface of the workpiece. Position, and, in order to ensure the comprehensiveness of the spraying of the workpiece, the starting point of the spraying stroke should be reserved a safe distance forward based on the stroke position of the corresponding gun of the above timing, and the spraying is started within the safe distance until the spraying During the trip, the starting point of the spray stroke described below includes the travel point corresponding to the timing and the travel point where the safety distance is reserved. The following is not repeated here.

S102. Drive the spray gun to move from a start point of the spray stroke to an end of the spray stroke in a second motion state, and control the spray gun to perform a second motion during the moving to the end of the spray stroke.

When the spray gun moves to the starting point of the spraying stroke, the spray gun is opened (ie, the second action is to open the spray gun to spray the workpiece), and the sprayed workpiece is started to be sprayed. Preferably, the spray gun is moved at a constant speed throughout the spray stroke to make the spray gun pair The workpiece is uniformly painted, and it is understood in the art that the second motion state here is preferably a uniform speed state, and during the actual spraying process, The spray gun can be basically uniform at a constant speed instead of uniform speed, and uniform movement is an effective means to improve the uniform effect of spraying, and the necessary protection means is not limited by the loss of uniform movement. In addition to the uniform speed, different paints are sprayed according to different parts of the workpiece. The thickness requirement and the corresponding setting of the second motion state are all within the scope of protection of the present invention.

S103. Drive the spray gun to move from the end of the spraying stroke to the end point in a third motion state, and control the spray gun to perform the first action during the moving to the end point.

When the gun moves to the end of the spray stroke, the gun is turned off and the workpiece is stopped. The end of the spraying stroke is defined as the stroke position of the spray gun corresponding to the timing at which the sprayed paint is sprayed directly to the surface of the workpiece, and in order to ensure the complete integrity of the spray on the workpiece, the end of the spray stroke should correspond to the above timing. The travel position of the spray gun is reserved for a safe distance backward, and the spraying action continues to a safe distance. The following spray stroke end points include the travel point corresponding to the timing and the travel point of the reserved safety distance. It will not be repeated when referring to the end of the spray stroke.

The final state of the spray gun is to stay at the end point. Therefore, the third motion state of the spray gun is decelerating movement, or, in order to prevent the spraying of the workpiece from being stopped immediately after leaving the spraying stroke, it is preferable to leave the spraying. During the stroke, the spray gun first maintains a constant speed and an open state, and then turns to a deceleration and a closed state, that is, the third motion state includes the following two modes, the first mode is deceleration until the end point is stationary, and the second mode is first The constant speed is decelerated for a while until it stops at the end point. Correspondingly, the first action is to stop the spray gun to stop spraying the workpiece, or to continue to open the spray gun for a certain time before closing.

In this embodiment, before entering the spraying stroke and after leaving the spraying stroke, the spray gun is turned off, the spraying of the workpiece is stopped, unnecessary paint spraying is reduced, and during the acceleration or deceleration other than the spraying stroke, due to the initial stage of acceleration and The moving speed of the final stage of deceleration is slow. The amount of paint sprayed in these two stages is relatively large compared with the amount of sprayed paint in other equal length strokes, and is also the most wasteful part of the paint. The spray control method of this embodiment is adopted. The one-time single spraying of small workpieces greatly saves the coating cost.

Taking the total stroke of 1000 units as an example, the respective strokes of the acceleration phase and the deceleration phase are calculated in units of 100, and the moving speed of the initial stage of acceleration and the end stage of deceleration is much slower than the uniform speed in the spraying stroke. Therefore, Spraying is carried out by the control method of the present invention, and the coating utilization rate is 30% or more.

Embodiment 2: The embodiment of the present invention provides a single reciprocating spray control method for a single workpiece that cannot be completed in a single direction. Referring to FIG. 2, the difference from Embodiment 1 is that the above S101-S103 is included. In addition to the steps, the method flow in this embodiment further includes:

S104. Drive the spray gun to move from the end point to the end of the spray stroke in a fourth motion state, and control the spray gun to perform the first action during the moving to the end of the spray stroke.

After the spray gun is decelerated in S103 and is stationary at the end point, in the initial state, the spray gun starts to move from the end point. And the acceleration is moved to the end of the spraying stroke. Since the end of the spraying stroke has not been reached (ie, the spray gun has not entered the spraying stroke), the spray gun is in a closed state during this period. It should be noted that the acceleration state of the spray gun can continue until the process of moving from the end point to the end of the spray stroke, or it can be accelerated in the early part of the process, and then the final stage moves to the end of the spray stroke at a constant speed state, that is, The fourth motion state includes two cases, the first case is continuous acceleration, and the second case is to accelerate to a predetermined speed first, and then continue to be uniform. Another point is that the first action is preferably a closing action, but the invention can also be implemented if the spray gun is pre-opened before reaching the start of the spraying stroke. Therefore, the first action also includes two cases. The first case is to continuously close the action, and the second case is to close and then open the action.

The fourth motion state is the same as the first motion state in that it may be a state of first acceleration and uniform velocity, with the difference that the accelerations of the two may be the same or different.

S105. Drive the spray gun to move from the end of the spray stroke to the start of the spray stroke in a fifth motion state, and control the spray gun to perform the second motion during the moving to the start of the spray stroke.

When the spray gun moves to the end of the spraying stroke, the spray gun is opened (ie, the second action is to open the spray gun), and the sprayed workpiece is sprayed. Preferably, the spray gun is moved at a uniform speed throughout the spray stroke, so that the spray gun uniformly paints the workpiece. It can be understood in the art that the fifth motion state here is preferably a uniform speed state, and in the actual spraying process, the spray gun can be substantially uniform in speed rather than uniform, and uniform moving is an effective means to improve the uniform effect of spraying, and is not necessary. Means, the protection range of the present invention is not limited by the loss of uniform movement. In addition to the uniform speed, according to different paint thickness requirements of different parts of the workpiece painting, correspondingly setting the second motion state belongs to the protection range of the present invention, and the fifth motion state is A certain speed is performed at a constant speed, and the specific speed value may be the same as or different from the speed of the second motion state.

S106. Drive the spray gun to move from a starting point of the spraying stroke to a starting point in a sixth motion state, and control the spray gun to perform the first action during the moving to the starting point.

When the gun moves to the beginning of the spray stroke, the gun is turned off and the workpiece is stopped. The final state of the spray gun is to stay at the starting point. Therefore, the sixth movement state of the spray gun is decelerating movement, or, in order to prevent the spraying of the workpiece from being stopped immediately after leaving the spraying stroke, it is preferable to leave the spraying. During the stroke, the spray gun first maintains a constant speed and an open state, and then turns to a deceleration and a closed state, that is, the sixth motion state includes the following two modes, the first mode is deceleration until it is stationary at the end point, and the second mode is first The constant speed is decelerated for a while until it stops at the end point. Correspondingly, the first action is to stop the spray gun to stop spraying the workpiece, or to continue to open the spray gun for a certain time before closing. It should be noted that the difference between the sixth motion state and the third motion state is that the accelerations of the specific motion deceleration may be the same or different.

With the spray control method of the embodiment, the workpiece is subjected to a single reciprocating spray, because of the stroke outside the spray stroke Internal control to close the spray gun reduces spray on unnecessary areas and saves on coating costs.

Embodiment 3: Embodiments of the present invention provide a method for controlling a plurality of reciprocating sprays. Different from Embodiment 2, Embodiment 2 performs steps S101-S106 in a single operation, and the method flow in this embodiment is repeated. Steps S101-S106, referring to FIG. 3, the details of each step are the same as those of Embodiment 1 and Embodiment 2, and will not be described again.

The embodiment of the invention is generally used for spraying workpieces on a pipeline: the workpiece to be sprayed is conveyed at a constant rate on the pipeline, and a moving rail is fixed above the pipeline for reciprocating movement of the spray gun, the moving direction of the spray gun and the conveying direction of the pipeline Vertically, the multiple reciprocating spray control method in this embodiment can spray the workpiece continuously conveyed on the pipeline to improve the spraying efficiency.

In order to further improve the spraying efficiency of the workpiece, the spraying control method in the above embodiments 1-3 may be employed for a plurality of spray guns, and preferably, the spray guns are arranged in pairs, and the preferred arrangement is a symmetric setting of each pair of spray guns. Above the assembly line, the horizontal distance should be greater than the distance of the spray stroke, and the angle of inclination is set to “inner eight”, which makes it convenient to spray the side of the workpiece to ensure the integrity of the workpiece spray. The spraying stroke is related to the vertical distance of the spray port of the spray gun from the transfer surface of the spray line and the angle of inclination of the spray gun.

In another embodiment of the invention, the nozzle direction of the spray gun is rotated, and the spray nozzles of each group of guns rotate at 360° at the same tilt angle. It is known from practice that by rotating the nozzle of the spray gun, The surface of the workpiece is sprayed more evenly to further improve the spraying effect.

Embodiment 4: Embodiments of the present invention provide a sensor-based spray control method. The sensor may be a CCD sensor, an opposite sensor, or a reflective sensor. The arrangement and working principle of each sensor will be described one by one. The method flow is shown in Figure 4 and includes:

S401. The spray gun moves from the starting point to the starting point of the spraying stroke in the closed state.

S402. The sensor at the starting point of the spraying stroke detects whether the spray gun reaches the starting point of the spraying stroke, and if so, executes S403, and if not, the spray gun continues to move toward the starting point of the spraying stroke.

S403. Open the spray gun and move to the end of the spray stroke.

S404. The sensor at the end of the spraying stroke detects whether the spray gun reaches the end of the spraying stroke, and if so, executes S405, and if not, the spray gun continues to move toward the end of the spraying stroke.

S405. Turn off the spray gun and move to the end point.

S406, reaching the end point, moving in the opposite direction.

S407. The sensor at the end of the spraying stroke detects whether the spray gun returns to the end of the spraying stroke, and if so, executes S408, and if not, the spray gun continues to move toward the end of the spraying stroke.

S408, open the spray gun and return to the starting point.

S409. The sensor at the starting point of the spraying stroke detects whether the spray gun returns to the starting point of the spraying stroke, and if so, executes S410, and if not, the spray gun continues to move toward the starting point of the spraying stroke.

S410. Turn off the spray gun and move to the starting point.

If the control main switch is not turned off, S401-S410 is repeatedly executed to achieve reciprocating spraying.

As described above, the sensor may be a CCD sensor, and the photographing direction of the CCD is toward the start point and the end point of the spraying stroke, and the CCD set at the starting point of the spraying stroke is taken as an example, and the starting point of the spraying stroke is taken according to the CCD sensor. The image, the analysis image determines whether the spray gun reaches the starting point of the spraying stroke, and the working principle of the CCD sensor at the end of the spraying stroke is the same as above;

The sensor may also be an opposite sensor, preferably in the vertical direction of the starting point of the spraying stroke, and in the vertical direction of the end point of the spraying stroke, each of which comprises a transmitter and The receiver, the transmitter and the receiver are horizontally disposed opposite to each other to set an imaging sensor at the starting point of the spraying stroke. When the gun moves to the starting point of the spraying stroke, the transmitter and the receiver are blocked. Break, generate a blocking signal indicating that the gun has reached the starting point of the spraying stroke, send the signal to the controller, and the controller controls the corresponding actuator to perform the relevant action, finally achieving the opening or closing of the spray gun, and the opposite end of the spraying stroke The sensor works as above;

The sensor may also be a reflective sensor. Unlike the opposite sensor, the emitter of the reflective sensor is also a receiver, which is disposed in the vertical direction of the starting point of the spraying stroke and the vertical direction of the end of the spraying stroke. Taking the reflection sensor set at the starting point of the spraying stroke as an example, when the gun moves to the starting point of the spraying stroke, the receiver receives the optical signal emitted and reflected back, and sends the signal to the controller. The controller controls the corresponding actuator to perform the relevant action, and finally realizes the opening or closing of the spray gun. The reflection sensor at the end of the spray stroke works as above.

Different sensors are used to detect the movement of the spray gun to change the spray state of the spray gun accordingly, and the technical solutions of the above embodiments 1-3 are realized, and the spray method of the full-name spray paint in the prior art is improved, and the existing method is solved. The technical problem of wasting spray paint in technology. The present invention includes, but is not limited to, the specific implementation manners and setting manners of the above three types of sensors, and the scope of protection of the present invention is not limited by the above range. In the prior art, the sensing detection technology that the detection target reaches a certain position should belong to the present invention. The scope of protection.

Embodiment 5: Embodiments of the present invention provide a spray control method based on a programmable controller, that is, using a programmable logic controller (PLC), setting a distance between a starting point and a starting point of a spraying stroke in the program as a first The distance between the set value, the starting point of the spraying stroke and the end point of the spraying stroke is the second set value, and the distance between the end point of the spraying stroke and the end point is the third set value. The method flow is shown in FIG. 5 and includes:

S501. The spray gun moves from the starting point to the starting point of the spraying stroke in the closed state.

S502. Determine whether the moving distance of the spray gun reaches the first set value. If yes, execute S503. If not, the spray gun continues to move toward the starting point of the spraying stroke.

S503. Open the spray gun and move to the end of the spray stroke.

S504. Determine whether the moving distance of the spray gun reaches the second set value. The moving distance here is the moving distance in which S503 is the initial state. If yes, execute S505. If not, the spray gun continues to move to the end of the spraying stroke.

S505. Turn off the spray gun and move to the end point.

S506, reaching the end point, moving in the opposite direction.

S507. Determine whether the moving distance of the spray gun reaches a third set value. The moving distance here is a distance that moves backward after reaching the end point. If yes, execute S508. If not, the spray gun continues to move toward the end of the spraying stroke.

S508. Open the spray gun and move to the starting point of the spray stroke.

S509. Determine whether the moving distance of the spray gun reaches the second set value. The moving distance here is the moving distance in which the initial state is performed in S508. If yes, execute S510. If not, the spray gun continues to move to the starting point of the spraying stroke.

S510, close the spray gun and return to the starting point.

If the control main switch is not turned off, S501-S510 is repeatedly executed to achieve reciprocal spraying.

By adopting a pre-programmed manner, the control can be turned on or off at different stages, and the technical solution in Embodiments 1-3 can also be realized, which is simple and effective, and is especially suitable for use in a pipeline operation console.

Embodiment 6: Embodiments of the present invention provide a block diagram of a spray control device. Referring to FIG. 6, the device includes:

a driving module 610, configured to drive one or more spray guns to move between a starting point, a starting point of a spraying stroke, an end point of the spraying stroke, and an ending point;

The valve control module 620 is configured to control the spray gun to close the injection valve during the movement between the starting point and the starting point of the spraying stroke, or between the end and the end of the spraying stroke; for the spray gun between the starting point of the spraying stroke and the end of the spraying stroke During the movement, the control spray gun opens the injection valve, corresponding to the method embodiment:

The driving module 610 drives the one or more spray guns to move from the starting point to the starting point of the spraying stroke in a first motion state, and during the moving to the starting point of the spraying stroke, the valve control module 620 controls the spray gun to perform the first action;

The driving module 610 drives the spray gun to move from the starting point of the spraying stroke to the end of the spraying stroke in a second motion state, and during the moving to the end point of the spraying stroke, the valve control module 620 controls the spray gun to perform the second action;

The drive module 610 drives the spray gun to move from the end of the spray stroke to the end point in a third motion state, and during the move to the end point, the valve control module 620 controls the spray gun to perform the first action.

The driving module 610 drives the spray gun to move from the end point to the spray stroke end point in a fourth motion state, and during the moving to the spray stroke end point, the valve control module 620 controls the spray gun to perform the first action;

The driving module 610 drives the spray gun to move from the end of the spraying stroke to the starting point of the spraying stroke in a fifth motion state, and during the moving to the starting point of the spraying stroke, the valve control module 620 controls the spray gun to perform the second action;

The drive module 610 drives the spray gun to move from the start of the spray stroke to the starting point in a sixth motion state, and during the movement to the starting point, the valve control module 620 controls the spray gun to perform the first action.

Optionally, the spraying control device further includes a sensing module 630, which is respectively disposed at a starting point of the spraying stroke and an ending point of the spraying stroke, and is configured to determine, according to the sensing result, whether the spray gun moves to the starting point of the spraying stroke or The end of the spray stroke is terminated and the valve control module 620 is triggered based on the test result.

Preferably, the sensing module 630 is a CCD sensor, an opposite sensor or a reflective sensor.

Optionally, the spraying control device further includes a distance setting unit 641 and a distance control unit 642, and the distance setting unit 641 is configured to set a starting point and a starting point of the spraying stroke, a starting point of the spraying stroke and an end point of the spraying stroke, and an end point of the spraying stroke. And the length of the end point; the distance control unit 642 is configured to trigger the valve when the spray gun moves from the starting point to the length of the starting point and the starting point of the spraying stroke, or when the distance from the end point reaches the end distance of the end point of the spraying stroke The control module 620 controls the spray gun to perform the first action; when the spray gun moves from the start point of the spray stroke to the length distance between the start point of the spray stroke and the end of the spray stroke, or moves from the end of the spray stroke to the length of the end of the spray stroke and the start of the spray stroke The valve control module 620 is triggered to control the spray gun to perform the second action.

Further, the spray control device further includes a moving rail for reciprocating movement of the spray gun, the conveyor belt is for conveying the workpiece to be sprayed, and preferably, the moving rail is erected above the conveyor belt. The spray gun is sprayed during the process from the start of the spray stroke to the end of the spray stroke.

Embodiment 7: In an embodiment of the present invention, there is provided an automatic control spray gun, wherein the spray gun is automatically controlled by the spray control method provided by the above embodiment, in particular, the spray gun has an electric electronic valve. The electronic valve is connected to an electromagnet, and the electromagnet acts under the control of the controller. Specifically, a sensor is disposed at the start and end points of the spraying stroke, and the sensor detects whether the spray gun reaches the start/end point of the spraying stroke. When the sensor detects that the spray gun reaches the start/end point of the spray stroke, the sensor sends a signal to the controller, and after receiving the signal, the controller analyzes and processes the signal and converts it into a control command, correspondingly, The controller sends a control command to the electromagnet. For example, if the control command is to control the spray gun to change from the closed state to the open state, the electromagnet acts to push open the electronic valve, and then the spray gun is opened; if the control command is to control the spray gun from open state to When the state is off, the electromagnet is powered off, the electromagnet core returns to the initial position, and the electronic valve is not To promote the role of children electromagnet closed, then stop spraying paint gun.

It should be noted that, when the control device provided by the above embodiment performs the spray control, only the division of the above functional modules is illustrated. In actual applications, the function distribution may be completed by different functional modules as needed. The internal structure of the identification device is divided into different functional modules to perform all or part of the functions described above. Another The embodiment of the control device provided in this embodiment is the same as the control method provided in the foregoing embodiment. The specific implementation process is described in detail in the method embodiment, and details are not described herein again.

The serial numbers of the embodiments of the present invention are merely for the description, and do not represent the advantages and disadvantages of the embodiments.

A person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium. The storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.

The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalents, improvements, etc., which are within the spirit and scope of the present invention, should be included in the protection of the present invention. Within the scope.

Claims

A spray control method, comprising the steps of:

S1, driving one or more spray guns to move from a starting point to a starting point of a spraying stroke in a first motion state, and controlling the spray gun to perform a first action during the moving to a starting point of the spraying stroke;

S2, driving the spray gun to move from a starting point of the spraying stroke to an ending point of the spraying stroke in a second motion state, and controlling the spray gun to perform a second action during the moving to the end point of the spraying stroke;

S3. Driving the spray gun to move from the end of the spray stroke to the end point in a third motion state, and during the moving to the end point, controlling the spray gun to perform the first action.
The method of claim 1 further comprising the steps of:

S4, driving the spray gun to move from the end point to the end of the spray stroke in a fourth motion state, and controlling the spray gun to perform the first action during the moving to the end of the spray stroke;

S5, driving the spray gun to move from the end of the spraying stroke to the starting point of the spraying stroke in a fifth motion state, and controlling the spray gun to perform the second action during the moving to the starting point of the spraying stroke;

S6. Driving the spray gun to move from a starting point of the spraying stroke to a starting point in a sixth motion state, and controlling the spray gun to perform the first action during the moving to the starting point.
The method of claim 2 including repeating steps S1-S6.