CN112275483A - Multifunctional three-proofing paint coating equipment and control method thereof - Google Patents
Multifunctional three-proofing paint coating equipment and control method thereof Download PDFInfo
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- CN112275483A CN112275483A CN202010926652.3A CN202010926652A CN112275483A CN 112275483 A CN112275483 A CN 112275483A CN 202010926652 A CN202010926652 A CN 202010926652A CN 112275483 A CN112275483 A CN 112275483A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
- B05B12/085—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to flow or pressure of liquid or other fluent material to be discharged
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/002—Manually-actuated controlling means, e.g. push buttons, levers or triggers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
- B05B12/081—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to the weight of a reservoir or container for liquid or other fluent material; responsive to level or volume of liquid or other fluent material in a reservoir or container
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
- B05B12/084—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to condition of liquid or other fluent material already sprayed on the target, e.g. coating thickness, weight or pattern
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
- B05B12/12—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to conditions of ambient medium or target, e.g. humidity, temperature position or movement of the target relative to the spray apparatus
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- Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
- Spray Control Apparatus (AREA)
Abstract
The invention relates to multifunctional three-proofing paint coating equipment which comprises a signal input unit, a control unit and an execution unit. The signal input unit is used for detecting paint flow, detecting position information of equipment and a coated product, detecting coating quality, setting equipment parameters and protecting safety. The control unit is used for analyzing, processing and controlling the operation of the whole equipment according to preset programs and parameters and carrying out interconversion on analog signals and digital signals of the equipment. The execution unit is used for receiving the instruction sent by the control unit, performing continuous coating, plane atomization coating and single-point coating on a complex coating area of a coated product, and automatically separating defective products. The execution unit includes: the device comprises a paint supply device, a valve nozzle device, a multi-axis movement device, a clamp fixing device and a defective product separating device. According to the invention, through the control of the atomization flow and the valve opening and closing speed, the splashing of the three-proofing paint is effectively reduced, and a clearer coating boundary is realized.
Description
Technical Field
The invention relates to the technical field of electronic product painting, in particular to multifunctional three-proofing paint coating equipment and a control method thereof.
Background
In order to improve the performances of automobile electronic products in the aspects of moisture resistance, mold resistance, corrosion resistance and the like, three-proofing paint is additionally coated on the surfaces of circuit board components, and as coating (such as grounding) is forbidden in partial areas of the circuit board, thicker three-proofing paint (such as large element fixation and reinforcement) is needed in partial areas, higher components are blocked in partial areas, multiple valves are needed by coating equipment, the equipment structure is complex, the equipment size is large, and the risk of mutual interference exists; secondly, the control system among different valves has the problem of signal compatibility, and the complexity of input/output logic control of the control system is increased; on the other hand, the coated three-proofing paint area is judged by personnel in the industry, and the coated effect of each circuit board cannot be guaranteed.
Therefore, the existing three-proofing paint coating mode has the following defects:
(1) due to the complexity of the area of the circuit board to be coated, the coating equipment uses various valves, the size of the equipment is increased, and the risk of mutual interference exists;
(2) the control system among different valves has the problem of signal compatibility, so that the complexity of the control system is increased;
(3) the three-proofing paint area after coating is judged by personnel, and the consistency of the coating effect of each circuit board cannot be ensured.
In order to solve the problems, the invention provides multifunctional three-proofing paint coating equipment and a control method thereof.
Disclosure of Invention
The invention aims to solve the problems that in the existing three-proofing paint coating mode, due to the complexity of a region needing to be coated on a circuit board, a plurality of valves are caused, the size of equipment is large, the valves are interfered with one another, control signals between the valves are complex, and the consistency of the coated three-proofing paint region cannot be guaranteed by judgment of personnel. The concrete solution is as follows:
a multifunctional three-proofing paint coating device comprises a signal input unit, a control unit electrically connected with the signal input unit, and an execution unit electrically connected with the control unit. The signal input unit is used for detecting paint flow, detecting position information of equipment and a coated product, detecting coating quality, setting equipment parameters and performing safety protection; the control unit is used for analyzing, processing and controlling the operation of the whole equipment according to preset programs and parameters and carrying out interconversion on analog signals and digital signals of the equipment. The execution unit is used for receiving the instruction sent by the control unit, performing continuous coating, planar atomization coating and single-point coating on a complex coating area of a coated product, and automatically separating defective products.
Further, the signal input unit includes:
the flow sensor is used for acquiring paint flow information flowing through the valve in the coating process and transmitting the information to the control unit;
the optical fiber sensor is used for acquiring the central position of the nozzle and providing an origin coordinate for the control unit;
the liquid level sensor is used for detecting the residual amount in the paint bucket, and when the residual amount is lower than a set liquid level, a low liquid level signal is provided for the control unit to prevent paint-free coating;
the position sensor is used for acquiring the position information of the coated product and transmitting the position information to the control unit;
the camera is used for detecting the position and the painting area information of the painted area under the fluorescent environment and transmitting the information to the control unit to analyze the painting quality;
the scanner is used for scanning bar code data of a product and transmitting the bar code data to the control unit to automatically call a coating program;
the touch screen has display and touch input functions and is used for program input, equipment parameter setting and analog debugging;
an operation button for providing an external operation, the operation information being transmitted to the control unit;
the safety device is arranged on the doorframe of the equipment and is used for providing safety protection when a coated product stretches hands or a probe enters the door in the coating process.
Further, the operation buttons comprise operation keys for starting spraying and releasing products and an emergency stop key for emergency; the safety device is a safety grating.
Further, the control unit includes:
the control host is used for processing the input/output signals, analyzing and judging whether the whole coating process meets the preset requirements or not, and sending out a control command;
the data acquisition module is electrically connected with the control host and is used for converting an external input signal into a signal which can be identified by equipment;
the memory is electrically connected with the control host and is used for storing preset programs and equipment parameters;
the valve control module is electrically connected with the control host and is used for performing combined control of three control modes on the valve to realize different coating functions;
the motion control module is electrically connected with the control host and is used for controlling the coated product to realize coating under the conditions of multiple angles and multiple directions;
the execution module is electrically connected with the control host and is used for sending execution signals of clamping/releasing products, supplying paint and separating defective products;
and the data uploading module is electrically connected with the control host and is used for uploading the coating data of the coated product to the database.
Furthermore, the data acquisition module is respectively electrically connected with the liquid level sensor, the flow sensor, the optical fiber sensor and the position sensor.
Furthermore, the control host is respectively and electrically connected with the camera, the scanner, the touch screen, the operation button and the safety device.
Further, the execution unit includes:
the paint supply device is electrically connected with the execution module and is used for conveying three-proofing paint;
the valve nozzle device is electrically connected with the valve control module and is used for coating a coated product in multiple spraying modes;
the multi-axis motion device is electrically connected with the motion control module and is used for realizing the steering and moving of a coated product so as to facilitate accurate coating;
the fixture fixing device is electrically connected with the execution module and is used for clamping and fixing the coated product;
the defective product separation device is electrically connected with the execution module and is used for separating the coated product which does not meet the requirement;
and the signal lamp device is electrically connected with the control host machine and is used for indicating the state of the coating process.
Further, the valve nozzle device comprises a valve component and a nozzle component communicated with the valve component, wherein one end of the valve component is provided with a gas inlet and a three-proofing paint inlet, the other end of the valve component is respectively provided with a striker gas interface, a first atomizing gas interface, a second atomizing gas interface and a three-proofing paint interface which are communicated with the nozzle component, a nozzle port of the nozzle component is provided with a quincunx-shaped through hole structure, petals are atomizing gas jet orifices, and a flower center is a three-proofing paint injection orifice.
The multifunctional three-proofing paint coating control method based on the equipment comprises the following steps:
step 4, scanning the product: scanning the serial number of the product and calling a corresponding program;
and 5, resetting the origin: according to the corresponding program, the multi-axis motion device operates to a set original point of the working position, and the operating stroke distance is reduced; if the reset is normal, then go to the next step, if the reset is abnormal, go to step 13;
And 7, starting: pressing a start button, clamping the product by the clamp fixing device, and conveying the product to a painting position;
step 9, painting inspection: after painting is finished, the flow sensor calculates the total paint amount and judges whether the paint amount meets the requirement; simultaneously, carrying out plane detection on the paint by a camera to determine whether a coating area meets the requirement; if the requirements are met, the next step is carried out, if the requirements are not met, the defective product is separated through a defective product separating device, and the step 13 is carried out;
step 11, product release: taking out the current product, if the production is not finished, turning to the step 6, and if the production is finished, then turning to the next step;
and step 12, finishing: finishing the operation after the whole batch of products is finished;
step 13, exception handling: manually analyzing and eliminating the system fault or the product fault which does not meet the requirement, and then turning to the step 10;
the protection of the safety grating is a pause type protection, the emergency stop protection is a complete stop type protection, and the equipment is restarted after the fault is removed.
Further, the set route and mode in step 8 are a combination of continuous coating, planar atomization coating and single-point coating along a complex coating area of the coated product.
In summary, the technical scheme of the invention has the following beneficial effects:
the invention solves the problems that in the existing three-proofing paint coating mode, due to the complexity of the area of a circuit board to be coated, a plurality of valves are caused, the equipment volume is large, the valves are interfered with each other, the control signals between the valves are complicated, and the consistency of the coated three-proofing paint area cannot be ensured by adopting the judgment of personnel. The invention has the following advantages:
(1) compared with the existing three-proofing paint coating equipment, the coating equipment disclosed by the invention has multi-mode coating, and can meet the coating requirement of a complex circuit board;
(2) compared with the existing spot inspection mode, the invention can realize 100% of on-line detection and reduce the outflow risk of defective products;
(3) compared with the prior art that after the needle nozzle is replaced, the center correction time is long, and the spray has deviation, the automatic centering alignment of the needle nozzle and the balanced spray of the atomization air pressure can be realized;
(4) compared with the existing atomization method by adjusting air pressure, the method has the advantages that the splashing of the three-proofing paint in the coating process is effectively reduced by controlling the atomization flow and the valve opening and closing speed, and a clearer coating boundary is realized;
(5) compared with the existing gear type flow sensor which is difficult to clean, the gear type flow sensor disclosed by the invention adopts the ultrasonic flow sensor, so that the pipeline is prevented from being contacted with the three-proofing paint, the cleaning is not needed, and the precision is higher.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a block diagram of a multi-functional tri-proof paint coating apparatus of the present invention;
FIG. 2 is an electrical block diagram of a multi-functional three-proofing paint coating apparatus of the present invention;
FIG. 3 is a block diagram of a valve assembly of the present invention;
FIG. 4 is a block diagram of a showerhead assembly of the present invention;
FIG. 5 is a block diagram of a showerhead port of the present invention;
FIG. 6 is an internal cross-sectional view of the showerhead assembly of the present invention;
FIG. 7 is a block diagram of a camera of the present invention;
FIG. 8 is a block diagram of a flow sensor of the present invention;
FIG. 9 is a block diagram of a fiber optic sensor of the present invention;
FIG. 10 is a block diagram of a paint supply apparatus of the present invention;
FIG. 11 is a flow chart of a multi-functional three-proofing paint coating control method according to the present invention.
Description of reference numerals:
1-striker, 2-piston, 3-striker cavity, 4-sealing ring, 5-paint cavity, 6-needle nozzle, 7-spring, 8-atomization cavity, 9-plum blossom cavity, 10-paint tube, 100-signal input unit, 101-flow sensor, 102-optical fiber sensor, 105-camera, 103-liquid level sensor, 104-position sensor, 106-scanner, 107-touch screen, 108-operation button, 109-safety device, 200-control unit, 201-control host, 202-data acquisition module, 203-memory, 204-valve control module, 205-motion control module, 206-execution module, 207-data uploading module, 300-execution unit, 301-paint supply device, 302-valve spray head device, 303-multi-axis movement device, 304-clamp fixing device, 305-defective product separation device, 306-signal lamp device, 1081-operation key, 1082-emergency stop key, 3011-paint bucket, 3012-paint adding port, 3013-paint supply pump, 3020-flow regulating rod, 3021-valve component, 3022-spray head component, 3023-gas inlet, 3024-three-proofing paint inlet, 3025-firing pin gas interface, 3026-first atomizing gas interface, 3027-second atomizing gas interface, 3028-three-proofing paint interface, 3029-spray head port, 30291-atomizing gas injection port, 30292-three-proofing paint injection port, 30293-spray head.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 10, a multi-functional tri-proof paint coating apparatus includes a signal input unit 100, a control unit 200 electrically connected to the signal input unit 100, and an execution unit 300 electrically connected to the control unit 200. The signal input unit 100 is used for detecting paint flow, detecting position information of equipment and a coated product, detecting coating quality, setting equipment parameters and protecting safety. The control unit 200 is used for analyzing, processing and controlling the operation of the whole device according to preset programs and parameters, and performing interconversion between analog signals and digital signals of the device. The execution unit 300 is used for receiving the instruction sent by the control unit 200, performing continuous coating, plane atomization coating and single-point coating on a complex coating area of a coated product, and automatically separating defective products (referred to as defective coated products).
Further, the signal input unit 100 includes:
a flow sensor 101 for acquiring paint flow information flowing through the valve during the coating process and transmitting the information to the control unit 200; (preferably, the ultrasonic flow sensor is adopted in the embodiment, so that the pipeline is prevented from contacting with the three-proofing paint, cleaning is not needed, and the precision is higher)
An optical fiber sensor 102 for acquiring a center position of the nozzle (i.e., a nozzle port) and providing an origin coordinate for the control unit 200; (preferably, in this embodiment, a cross fiber sensor is used to detect the center and height of the nozzle and ensure the accurate position of the origin)
A liquid level sensor 103 for detecting the remaining amount in the paint bucket, and when the remaining amount is lower than a set liquid level, providing a low liquid level signal to the control unit 200 to prevent no paint coating;
a position sensor 104 for acquiring position information of the coated product and transmitting the position information to the control unit 200;
a camera 105 for detecting the position and the painting area information of the painted area after coating in a fluorescent environment, and transmitting to the control unit 200 for analyzing the coating quality; (preferably, a 2D industrial camera is used in the present embodiment)
A scanner 106 for scanning bar code data of a product (i.e. a coated product), and transmitting the bar code data to the control unit 200 to automatically invoke a coating program;
the touch screen 107 has display and touch input functions, and is used for program entry, equipment parameter setting and analog debugging;
an operation button 108 for providing an external operation, operation information being transmitted to the control unit 200; the operating buttons 108 include operating keys 1081 for activating the spray and releasing the product, respectively, and an emergency stop key 1082 for emergency situations.
The safety device 109 is arranged on a door frame of the equipment and used for providing safety protection when a coated product is stretched into a door or a probe in a coating process, and the safety device 109 is a safety grating (preferably an infrared grating is used).
Further, the control unit 200 includes:
the control host 201 is used for processing the input/output signals, analyzing and judging whether the whole coating process meets the preset requirements or not, and sending out a control command; (preferably the control host 201 is a computer)
A data acquisition module 202 electrically connected to the control host 201 for converting an external input signal (i.e., an input signal from the signal input unit 100) into a signal recognizable by the device;
the memory 203 is electrically connected with the control host 201 and is used for storing preset programs and device parameters;
the valve control module 204 is electrically connected with the control host 201 and is used for performing combined control of three control modes on the valve to realize different coating functions;
the motion control module 205 is electrically connected with the control host 201 and is used for controlling the coated product to realize coating under the conditions of multiple angles and multiple directions;
an execution module 206 electrically connected with the control host 201 and used for sending execution signals of clamping/releasing products, supplying paint and separating defective products;
and a data uploading module 207 electrically connected to the control host 201, configured to upload coating data of a coated product to a database (i.e., manufacturing execution system ("MES") database).
Further, the data acquisition module 202 is electrically connected with the liquid level sensor 103, the flow sensor 101, the optical fiber sensor 102 and the position sensor 104 respectively. The control host 201 is electrically connected to the camera 105, the scanner 106, the touch screen 107, the operation buttons 108, and the security device 109, respectively.
Further, the execution unit 300 includes:
the paint supply device 301 is electrically connected with the execution module 206 and is used for conveying three-proofing paint; (the paint device 301 comprises a paint barrel 3011, a paint adding port 3012 and a paint supply pump 3013. the paint barrel 3011 is internally provided with a liquid level sensor 103, and the execution module 206 is electrically connected with the paint supply pump 3013.)
The valve nozzle device 302 is electrically connected with the valve control module 204 and is used for coating the coated product in multiple spraying modes;
the multi-axis motion device 303 is electrically connected with the motion control module 205 and is used for realizing the turning and moving of a coated product, so that the precise coating is facilitated; (the multi-axis movement device 303 can realize the operations of up, down, left, right, rotation, etc. of the coated product)
A clamp fixture 304 electrically connected to the execution module 206 for clamping and fixing the coated product; (the clamp fixture 304 includes a clamp and a fixture mechanism)
A defective product separating device 305 electrically connected with the execution module 206 and used for separating the unsatisfactory coated products; (defective product separating means 305 is provided below the jig fixing means 304)
And the signal lamp device 306 (which is arranged on the upper side of the equipment and comprises a green lamp for indicating a normal working state, a red lamp for indicating a standby working state and a red lamp flashing for indicating an abnormal alarm state) electrically connected with the control host 201 is used for indicating the state of the coating process.
Further, the valve-type showerhead assembly 302 includes a valve assembly 3021, a showerhead assembly 3022 communicating with the valve assembly 3021, one end of the valve assembly 3021 is provided with a gas inlet port 3023 and a three-proofing paint inlet port 3024, the other end of the valve assembly 3021 is provided with a striker gas port 3025, a first atomizing gas port 3026, a second atomizing gas port 3027 and a three-proofing paint port 3028 respectively communicating with the showerhead assembly 3022 (i.e., the valve assembly 3021 and the showerhead assembly 3022 are respectively provided with a quincunx through hole structure, petals are atomizing gas injection ports 30291, and a flower center is a three-proofing paint injection port 30292. The valve assembly 3021 communicates with the spray head assembly 3022 via a hose and paint hose (not shown).
The first atomizing gas port 3026 and the second atomizing gas port 3027 are symmetrically arranged for the purpose of balanced and uniform atomization. The spray head assembly 3022 includes a striker mechanism disposed from the rear portion to the rear portion (the striker mechanism includes a striker 1, the rear portion of the striker 1 is vertically and fixedly connected to a piston 2, the rear portion of the striker 1 is disposed in a striker cavity 3, the middle portion of the striker 1 is sleeved in a sealing ring 4, the front portion of the striker 1 is disposed in a paint cavity 5, the head of the striker 1 abuts against the middle portion of a nozzle 6, at this time, the striker 1 is in a closed state, the piston 2 abuts against one end of a spring 7, the spring 7 is sleeved on a front rod portion of a flow rate adjusting rod 3020, the rear rod portion of the adjusting rod 3020 is exposed outside the rear end of the spray head assembly 3022, the front end of the flow rate adjusting rod 3020 abuts against the center of the piston 2 when the striker 1 is in an open state, the striker cavity 3 is communicated with the striker air inlet port 3025), and an atomizing mechanism disposed on the front portion (the atomizing mechanism, the two sides of the atomizing cavity 8 are respectively communicated with a first atomizing gas port 3026 and a second atomizing gas port 3027, the front end of the atomizing cavity 8 is communicated with a plum blossom cavity 9 in the spray head 30293, the front end of the plum blossom cavity 9 is an atomizing gas jet port 30291, the front end of the needle nozzle 6 is communicated with a paint pipe 10 at the center of the spray head 30293, the paint pipe 10 and the plum blossom cavity 9 are isolated from each other and are not communicated, the plum blossom cavity 9 is arranged around the paint pipe 10, and the front end of the paint pipe 10 is a paint injection port 30292). The control mode comprises atomized air flow on-off (5 times/second the fastest), striker high-frequency on-off (250 times/second the fastest), and striker common on-off (5 times/second the fastest), continuous coating of three-proofing paint (striker common on-off) is realized through different signals, planar atomization coating of three-proofing paint (atomized air flow on-off + striker common on-off), and single-point coating of three-proofing paint (striker high-frequency on-off), the centered positioning of the needle nozzle 6 and balanced spraying of atomization air pressure are realized by adopting a plum blossom structure, an air throttle valve is adopted, the atomization flow and the valve switching speed are controlled, splashing of the three-proofing paint in the coating process is reduced, and.
As shown in fig. 11, a multifunctional three-proofing paint coating control method based on the above device is performed according to the following steps:
step S1, start: starting a power supply and an air source of the equipment;
step S2, emergency stop protection: emergency stop when abnormal, cutting off all dangerous input/output; pressing scram key 1082 to check if normal, if normal (i.e., Y), then go to step S13 if not normal (i.e., N);
step S3, system self-checking: the equipment starts self-diagnosis, including the operation buttons 108, the center of the valve needle (namely the nozzle port 3029), the protection of the safety grating, the mechanical origin of the equipment, and whether the glue output amount of the paint supply device 301 is within the set range; if the diagnosis is normal, then go to step S13 if the diagnosis is abnormal;
step S4, scan product: scanning the serial number of a product (which refers to a coated product) by using the scanner 106, and calling (namely, automatically reading the serial number from the memory 203 after the control host 201 obtains the serial number) a corresponding program;
and 5, resetting the origin: according to the corresponding program, the multi-axis motion device 303 operates to the set origin of the working position, reducing the travel distance of operation; if the reset is normal (i.e., Y), then go to step S13 if the reset is not normal (i.e., N);
step S6, put in product: the product (referred to as the coated product) is placed in the fixture fixing device 304, and the device judges whether the product is in place; after the liquid level sensor 103 detects that the paint is in place, the liquid level sensor enters a standby operation state, and a standby indicator light (namely a red light) is turned on.
Step S7, start: pressing the start button (i.e., the operation key 1081) causes the clamp fixture 304 to clamp the product, which is transported to the painting location;
step S8, painting run: when each signal is normal, the valve nozzle device 302 starts painting according to the set route and mode; (i.e. combined painting in continuous coating, flat spray coating, single-point coating mode along a complex coating area of the product to be coated)
Step S9, painting inspection: after finishing painting, the flow sensor 101 calculates the total paint amount and judges whether the paint amount meets the requirement; at the same time, the camera 105 performs a plane inspection of the paint (by contrast of the control host 201 with the standard image in the memory 203), determining whether the coated area meets the requirements; if the requirement is met, next, if the requirement is not met, the defective products are separated through the defective product separating device 305, and the step S13 is switched to;
step S10, uploading data: after painting is completed, collecting key parameters of the painting process, and uploading the key parameters to a database (through a data uploading module 207);
step S11, product release (S11-1): taking out the current product, (S11-2) if the production is not finished, turning to the step S6, and if the production is finished, then carrying out the next step;
step S12, end: finishing the operation after the whole batch of products is finished;
step S13, exception handling: manually analyzing and eliminating the system fault or the product fault which does not meet the requirement, and then turning to the step S10;
the protection of the safety grating is a pause type protection, and the emergency stop protection is a complete stop type protection, and the equipment is restarted after the fault is removed.
In summary, the technical scheme of the invention has the following beneficial effects:
the invention solves the problems that in the existing three-proofing paint coating mode, due to the complexity of the area of a circuit board to be coated, a plurality of valves are caused, the equipment volume is large, the valves are interfered with each other, the control signals between the valves are complicated, and the consistency of the coated three-proofing paint area cannot be ensured by adopting the judgment of personnel. The invention has the following advantages:
(1) compared with the existing three-proofing paint coating equipment, the coating equipment provided by the invention has multi-mode coating (namely continuous coating, planar atomization coating and single-point coating), and can meet the coating requirement of a complex circuit board (namely a coated product);
(2) compared with the existing spot inspection mode, the invention can realize 100% of on-line detection and reduce the outflow risk of defective products;
(3) compared with the prior art that after the needle nozzle is replaced, the center correction time is long, and the spray has deviation, the automatic centering alignment of the needle nozzle and the balanced spray of the atomization air pressure can be realized; (the center and height of the nozzle are detected by the optical fiber sensor to ensure the accurate position of the origin)
(4) Compared with the existing atomization method by adjusting air pressure, the method has the advantages that the splashing of the three-proofing paint in the coating process is effectively reduced by controlling the atomization flow and the valve opening and closing speed, and a clearer coating boundary is realized;
(5) compared with the existing gear type flow sensor which is difficult to clean, the gear type flow sensor disclosed by the invention adopts the ultrasonic flow sensor, so that the pipeline is prevented from being contacted with the three-proofing paint, the cleaning is not needed, and the precision is higher.
The above-described embodiments do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the above-described embodiments should be included in the protection scope of the technical solution.
Claims (10)
1. The utility model provides a multi-functional three proofings lacquer coating equipment which characterized in that: the device comprises a signal input unit, a control unit electrically connected with the signal input unit, and an execution unit electrically connected with the control unit; the signal input unit is used for detecting paint flow, detecting position information of equipment and a coated product, detecting coating quality, setting equipment parameters and performing safety protection; the control unit is used for analyzing, processing and controlling the operation of the whole equipment according to a preset program and parameters and performing interconversion on an analog signal and a digital signal of the equipment; the execution unit is used for receiving the instruction sent by the control unit, performing continuous coating, planar atomization coating and single-point coating on a complex coating area of a coated product, and automatically separating defective products.
2. The multifunctional three-proofing paint coating apparatus according to claim 1, wherein the signal input unit comprises:
the flow sensor is used for acquiring paint flow information flowing through the valve in the coating process and transmitting the information to the control unit;
the optical fiber sensor is used for acquiring the central position of the nozzle and providing an origin coordinate for the control unit;
the liquid level sensor is used for detecting the residual amount in the paint bucket, and when the residual amount is lower than a set liquid level, a low liquid level signal is provided for the control unit to prevent paint-free coating;
the position sensor is used for acquiring the position information of the coated product and transmitting the position information to the control unit;
the camera is used for detecting the position and the painting area information of the painted area under the fluorescent environment and transmitting the information to the control unit to analyze the painting quality;
the scanner is used for scanning bar code data of a product and transmitting the bar code data to the control unit to automatically call a coating program;
the touch screen has display and touch input functions and is used for program input, equipment parameter setting and analog debugging;
an operation button for providing an external operation, the operation information being transmitted to the control unit;
the safety device is arranged on the doorframe of the equipment and is used for providing safety protection when a coated product stretches hands or a probe enters the door in the coating process.
3. The multifunctional three-proofing paint coating equipment according to claim 2, characterized in that: the operation button comprises an operation key and an emergency stop key, wherein the operation key is respectively used for starting spraying and releasing products; the safety device is a safety grating.
4. A multifunctional, three-proofing paint coating apparatus according to claim 3, wherein said control unit comprises:
the control host is used for processing the input/output signals, analyzing and judging whether the whole coating process meets the preset requirements or not, and sending out a control command;
the data acquisition module is electrically connected with the control host and is used for converting an external input signal into a signal which can be identified by equipment;
the memory is electrically connected with the control host and is used for storing preset programs and equipment parameters;
the valve control module is electrically connected with the control host and is used for performing combined control of three control modes on the valve to realize different coating functions;
the motion control module is electrically connected with the control host and is used for controlling the coated product to realize coating under the conditions of multiple angles and multiple directions;
the execution module is electrically connected with the control host and is used for sending execution signals of clamping/releasing products, supplying paint and separating defective products;
and the data uploading module is electrically connected with the control host and is used for uploading the coating data of the coated product to the database.
5. The multifunctional three-proofing paint coating equipment according to claim 4, characterized in that: the data acquisition module is respectively and electrically connected with the liquid level sensor, the flow sensor, the optical fiber sensor and the position sensor.
6. The multifunctional three-proofing paint coating equipment according to claim 5, characterized in that: the control host is respectively and electrically connected with the camera, the scanner, the touch screen, the operation button and the safety device.
7. The multifunctional three-proofing paint coating apparatus according to claim 6, wherein the execution unit comprises:
the paint supply device is electrically connected with the execution module and is used for conveying three-proofing paint;
the valve nozzle device is electrically connected with the valve control module and is used for coating a coated product in multiple spraying modes;
the multi-axis motion device is electrically connected with the motion control module and is used for realizing the steering and moving of a coated product so as to facilitate accurate coating;
the fixture fixing device is electrically connected with the execution module and is used for clamping and fixing the coated product;
the defective product separation device is electrically connected with the execution module and is used for separating the coated product which does not meet the requirement;
and the signal lamp device is electrically connected with the control host machine and is used for indicating the state of the coating process.
8. The multifunctional three-proofing paint coating equipment according to claim 7, characterized in that: the valve spray head device comprises a valve component and a spray head component communicated with the valve component; one end of the valve component is provided with a gas inlet and a three-proofing paint inlet, the other end of the valve component is respectively provided with a striker gas interface, a first atomizing gas interface, a second atomizing gas interface and a three-proofing paint interface which are communicated with the spray head component, the spray head port of the spray head component is provided with a quincunx through hole structure, petals are atomizing gas jet orifices, and a flower center is a three-proofing paint injection orifice.
9. A multifunctional three-proofing paint coating control method based on the equipment of any one of claims 1 to 8, comprising the following steps of:
step 1, start: starting a power supply and an air source of the equipment;
step 2, emergency stop protection: emergency stop when abnormal, cutting off all dangerous input/output; pressing an emergency stop key, checking whether the emergency stop key is normal, if the emergency stop key is normal, performing the next step, and if the emergency stop key is abnormal, turning to the step 13;
step 3, system self-checking: the equipment starts self-diagnosis, including whether each operating button, the center of the valve needle nozzle, the protection of the safety grating, the mechanical origin of the equipment and the glue output of the paint supply device are in a set range; if the diagnosis is normal, then the next step, if the diagnosis is abnormal, then step 13 is carried out;
step 4, scanning the product: scanning the serial number of the product and calling a corresponding program;
and 5, resetting the origin: according to the corresponding program, the multi-axis motion device operates to a set original point of the working position, and the operating stroke distance is reduced; if the reset is normal, then go to the next step, if the reset is abnormal, go to step 13;
step 6, putting a product: putting the product into a fixture fixing device, and judging whether the product is put in place by equipment; after the liquid level sensor detects that the paint is in place, the liquid level sensor enters a standby operation state, and a standby indicator light is on.
And 7, starting: pressing a start button, clamping the product by the clamp fixing device, and conveying the product to a painting position;
step 8, painting operation: after each signal is normal, the valve nozzle device starts painting according to a set route and a set mode;
step 9, painting inspection: after painting is finished, the flow sensor calculates the total paint amount and judges whether the paint amount meets the requirement; simultaneously, carrying out plane detection on the paint by a camera to determine whether a coating area meets the requirement; if the requirements are met, the next step is carried out, if the requirements are not met, the defective product is separated through a defective product separating device, and the step 13 is carried out;
step 10, uploading data: after finishing painting, collecting key parameters of the painting process, and uploading the key parameters to a database;
step 11, product release: taking out the current product, if the production is not finished, turning to the step 6, and if the production is finished, then turning to the next step;
and step 12, finishing: finishing the operation after the whole batch of products is finished;
step 13, exception handling: manually analyzing and eliminating the system fault or the product fault which does not meet the requirement, and then turning to the step 10;
the protection of the safety grating is a pause type protection, the emergency stop protection is a complete stop type protection, and the equipment is restarted after the fault is removed.
10. The multifunctional three-proofing paint coating control method according to claim 9, characterized in that: the set route and mode in step 8 are a combination of continuous coating, planar atomization coating and single-point coating along a complex coating area of the coated product.
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| CN202010926652.3A CN112275483A (en) | 2020-09-07 | 2020-09-07 | Multifunctional three-proofing paint coating equipment and control method thereof |
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| CN202010926652.3A CN112275483A (en) | 2020-09-07 | 2020-09-07 | Multifunctional three-proofing paint coating equipment and control method thereof |
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| CN113976354A (en) * | 2021-11-05 | 2022-01-28 | 深圳联钜自控科技有限公司 | UV three-proofing paint coating special equipment based on artificial intelligence technology |
| CN115318481A (en) * | 2022-10-12 | 2022-11-11 | 常州铭赛机器人科技股份有限公司 | Control method of high-precision piezoelectric spray valve |
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