阅读说明：本技术 一种用于电子产品生产时用控制系统及其控制方法 (Control system and control method for electronic product production ) 是由 吕恒 于 2020-03-25 设计创作，主要内容包括：本发明公开了一种用于电子产品生产时用控制系统及其控制方法,属于电子产品生产技术领域。其中,控制系统包括灌胶设备、检测模块、控制模块以及交互模块；灌胶设备包括传输机、伺服电机、灌胶箱体、第一进胶管、第二进胶管、灌胶喷嘴；检测模块包括第一位置传感器、第二位置传感器、第一液位传感器以及第二液位传感器；控制模块包括主控制器、变频器、第一电磁阀、第二电磁阀以及第三电磁阀。本发明通过对灌封胶流程的自动化控制,降低人为干预,保证电子产品的生产效率和电子元件的灌封胶质量,并提升生产线的通用性。(The invention discloses a control system and a control method for electronic product production, and belongs to the technical field of electronic product production. The control system comprises glue pouring equipment, a detection module, a control module and an interaction module; the glue pouring equipment comprises a conveyor, a servo motor, a glue pouring box body, a first glue inlet pipe, a second glue inlet pipe and a glue pouring nozzle; the detection module comprises a first position sensor, a second position sensor, a first liquid level sensor and a second liquid level sensor; the control module comprises a main controller, a frequency converter, a first electromagnetic valve, a second electromagnetic valve and a third electromagnetic valve. According to the invention, through the automatic control of the pouring sealant process, the human intervention is reduced, the production efficiency of electronic products and the pouring sealant quality of electronic elements are ensured, and the universality of a production line is improved.)

1. A control system for electronic product production, comprising:

the glue filling equipment comprises a transmission part and a glue filling part, wherein the transmission part comprises a conveyor and a servo motor for driving the conveyor to operate; the glue filling part comprises a glue filling box body, a first glue inlet pipe and a second glue inlet pipe which are communicated with the top of the glue filling box body, a glue filling nozzle which is communicated with the bottom of the glue filling box body, a driving motor which is arranged at the top of the glue filling box body and a stirrer which is arranged in the glue filling box body; an output shaft of the driving motor is fixedly connected with the stirrer;

the detection module comprises a first position sensor arranged on one side of the input end of the conveyor, a second position sensor arranged on one side of the middle part of the conveyor, a first liquid level sensor arranged in the glue pouring box body and close to the top end, and a second liquid level sensor arranged in the glue pouring box body and close to the bottom end;

the control module comprises a main controller, a frequency converter for controlling the rotating speed of the servo motor, a first electromagnetic valve arranged on the first rubber inlet pipe, a second electromagnetic valve arranged on the second rubber inlet pipe and a third electromagnetic valve arranged on the glue filling nozzle; the input end of the main controller is respectively connected with the first position sensor, the second position sensor, the first liquid level sensor, the second liquid level sensor and the temperature sensor; the output port of the main controller is respectively connected with the frequency converter, the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve;

the interaction module is a PC (personal computer) in communication connection with the main controller, and an alarm indicator light, an operation indicator light and a stop indicator light which are arranged on the glue pouring equipment; the alarm indicator light, the operation indicator light and the stop indicator light are respectively connected with the output port of the main controller.

2. The control system for electronic product production according to claim 1, wherein the PC comprises an information input module for controlling system working parameter setting and a control system working condition information output module; and the PC and the main controller establish a communication network through an RS-485 interface and a network connector.

3. The control system for electronic product production according to claim 2, wherein a display screen for completing a man-machine conversation is connected to the PC.

4. The control system for electronic product production according to claim 1, wherein the detection module further comprises a temperature sensor for detecting a glue-pouring temperature in the glue-pouring box, and a detection end of the temperature sensor is disposed in a middle portion of the glue-pouring box.

5. The control system for electronic product production according to claim 1, wherein the frequency converter is an MM440 frequency converter, and the frequency converter and the main controller use a USS communication protocol to control the operation, speed regulation and stop of the servo motor.

6. The control system for electronic product production as claimed in any one of claims 1-5, wherein said main controller is a P L C controller with model number S7-200CPU 226.

7. A control method for a control system used in the production of electronic products, the control method comprising the steps of:

step 1: the system is started, initialization setting is carried out, glue pouring time and glue pouring ratio are determined according to the type of the electronic element, and control parameters of the glue pouring ratio, the running time of the electronic element and the glue pouring time of the electronic element are input into the control system through the PC;

step 2: the system operates, the main controller controls the first electromagnetic valve and the second electromagnetic valve to open according to the set glue filling ratio to fill glue into the glue filling box body, meanwhile, the glue filling allowance in the glue filling box is monitored, and when the glue filling allowance is insufficient, the glue filling in the glue filling box is supplemented according to the glue filling ratio;

and step 3: the electronic element position is detected through the first position sensor and the second position sensor, the conveyor conveys the electronic element to the position under the pouring glue touch nozzle for pouring the pouring glue, and the main controller controls the operation time of the electronic element and the pouring glue time of the electronic element.

8. The control method according to claim 7, wherein the process of step 2 is:

step 201: the main controller controls the first solenoid valve to open to enable the first rubber inlet pipe to inject the rubber solution into the rubber pouring box, and simultaneously controls the second solenoid valve to open to enable the second rubber inlet pipe to inject the hardening agent solution into the rubber pouring box;

step 202: the main controller controls the driving motor to operate, so that the driving motor drives the stirrer to rotate to fully fuse the self-adhesive solution and the hardening agent solution;

step 203: when the second liquid level sensor detects that the glue filling liquid level is lower than the second liquid level sensor, repeating the step 201 and the step 202; when the second liquid level sensor detects that the surface of the glue filling liquid is higher than that of the second liquid level sensor, executing the next step;

step 204: when the first liquid level sensor detects that the surface of the potting adhesive is higher than that of the first liquid level sensor, the main controller sequentially controls the first electromagnetic valve and the second electromagnetic valve to be closed, and the ratio of the opening time of the first electromagnetic valve to the opening time of the second electromagnetic valve is equal to the set potting adhesive ratio; when the first level sensor detects that the glue level is lower than the first inter-leaf sensor, step 203 is repeated.

9. The control method according to claim 7, wherein the process of step 3 is:

step 301: when the first position sensor detects that the input end of the conveyor is provided with an electronic element, the main controller controls the servo motor to operate through the frequency converter, and the frequency converter controls the rotating speed of the servo motor to convey the electronic element to the position right below the glue pouring nozzle in a set operation time;

step 302: when the second position sensor detects the electronic element, the main controller controls the servo motor to stop running, controls the third electromagnetic valve to open and carry out pouring sealant on the electronic element according to the set pouring sealant time, controls the third electromagnetic valve to close after the pouring sealant is finished, and controls the servo motor to run to transport the electronic element to the output end of the conveyor;

step 303: when the first position sensor detects the electronic component, repeatedly executing the step 301 and the step 302;

step 304: when the first position sensor does not detect the electronic component and the second position sensor detects the electronic component, repeating step 302;

step 305: when the first position sensor does not detect the electronic component while the second position sensor does not detect the electronic component, the system stops operating.

Technical Field

The invention belongs to the technical field of electronic product production, and particularly relates to a control system and a control method for electronic product production.

Background

With the rapid development of electronic information products, electronic products are widely used in various industries. Due to the high requirements of electronic products on insulation, shock resistance and water resistance, the capability requirements of an automatic control system in the production process of the electronic products are higher and higher.

The production process of the electronic product mainly comprises plug-in, packaging, assembling, appearance detection, functional test and the like. In order to improve the insulation, shock-proof and waterproof effects of electronic products, when the electronic products are packaged, glue pouring equipment is needed to pour glue into the electronic products. At present, many electronic product manufacturing enterprises are different in quality, most electronic product manufacturing enterprises adopt manual control or semi-automatic control during pouring sealant, and the production mode can cause the following problems in the production of electronic products:

1. the production rhythm is disturbed by human intervention, so that the production efficiency of electronic products is reduced;

2. the glue filling ratio is not accurate, the glue filling quality is reduced, and the quality of electronic products is reduced;

3. when different electronic products share the production line, the pouring sealant time setting and the pouring sealant proportion setting are not intelligent.

Disclosure of Invention

The purpose of the invention is as follows: the control system and the control method thereof used for the production of the electronic product are provided to solve the problems in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme:

the invention provides a control system for electronic product production, comprising:

the glue filling equipment comprises a transmission part and a glue filling part, wherein the transmission part comprises a conveyor and a servo motor for driving the conveyor to operate; the glue filling part comprises a glue filling box body, a first glue inlet pipe and a second glue inlet pipe which are communicated with the top of the glue filling box body, a glue filling nozzle which is communicated with the bottom of the glue filling box body, a driving motor which is arranged at the top of the glue filling box body and a stirrer which is arranged in the glue filling box body; an output shaft of the driving motor is fixedly connected with the stirrer;

the detection module comprises a first position sensor arranged on one side of the input end of the conveyor, a second position sensor arranged on one side of the middle part of the conveyor, a first liquid level sensor arranged in the glue pouring box body and close to the top end, and a second liquid level sensor arranged in the glue pouring box body and close to the bottom end;

the control module comprises a main controller, a frequency converter for controlling the rotating speed of the servo motor, a first electromagnetic valve arranged on the first rubber inlet pipe, a second electromagnetic valve arranged on the second rubber inlet pipe and a third electromagnetic valve arranged on the glue filling nozzle; the input end of the main controller is respectively connected with the first position sensor, the second position sensor, the first liquid level sensor, the second liquid level sensor and the temperature sensor; the output port of the main controller is respectively connected with the frequency converter, the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve;

the interaction module is a PC (personal computer) in communication connection with the main controller, and an alarm indicator light, an operation indicator light and a stop indicator light which are arranged on the glue pouring equipment; the alarm indicator light, the operation indicator light and the stop indicator light are respectively connected with the output port of the main controller.

In a further embodiment, the PC comprises an information input module for controlling the setting of the working parameters of the system and an information output module for controlling the working conditions of the system; the PC and the main controller establish a communication network through an RS-485 interface and a network connector; the information input module of the PC is used for inputting control parameters to control the running time, the pouring sealant time and the pouring sealant ratio of the electronic element, so that the full-automatic running of the electronic element in the pouring sealant production is realized, and when a single element is replaced, the pouring sealant process of different types of electronic elements can be realized only by modifying the control parameters; meanwhile, the whole operation condition of the system can be monitored in real time through the information output module, and the intelligence of the pouring sealant during production is further improved.

In a further embodiment, the PC is connected with a display screen for completing man-machine conversation, and the display screen can enable an operator to simply and intuitively observe the operation condition of the system, so that man-machine conversation is better promoted.

In a further embodiment, the detection module further comprises a temperature sensor for detecting the glue filling temperature in the glue filling box body, and the detection end of the temperature sensor is arranged in the middle of the glue filling box body; can carry out real-time detection to the encapsulating temperature of encapsulating incasement through setting up temperature sensor, prevent that the encapsulating temperature from crossing lowly and leading to the fact the not enough condition of mobility, reduce because of the not enough risk that leads to of encapsulating nozzle jam or electronic component encapsulating quality is not up to standard of encapsulating mobility.

In a further embodiment, the frequency converter adopts an MM440 frequency converter, and the frequency converter and the main controller adopt a USS communication protocol to control the operation, speed regulation and stop of the servo motor.

In a further embodiment, the master controller is a P L C controller model S7-200CPU 226.

The invention also provides a control method of the control system used in the production of the electronic product, which comprises the following steps:

a control method for a control system used in the production of electronic products comprises the following steps:

step 1: the system is started, initialization setting is carried out, glue pouring time and glue pouring ratio are determined according to the type of the electronic element, and control parameters of the glue pouring ratio, the running time of the electronic element and the glue pouring time of the electronic element are input into the control system through the PC;

step 2: the system operates, the main controller controls the first electromagnetic valve and the second electromagnetic valve to open according to the set glue filling ratio to fill glue into the glue filling box body, meanwhile, the glue filling allowance in the glue filling box is monitored, and when the glue filling allowance is insufficient, the glue filling in the glue filling box is supplemented according to the glue filling ratio;

and step 3: the electronic element position is detected through the first position sensor and the second position sensor, the conveyor conveys the electronic element to the position under the pouring glue touch nozzle for pouring the pouring glue, and the main controller controls the operation time of the electronic element and the pouring glue time of the electronic element.

In a further embodiment, the process of step 2 is:

step 201: the main controller controls the first solenoid valve to open to enable the first rubber inlet pipe to inject the rubber solution into the rubber pouring box, and simultaneously controls the second solenoid valve to open to enable the second rubber inlet pipe to inject the hardening agent solution into the rubber pouring box;

step 202: the main controller controls the driving motor to operate, so that the driving motor drives the stirrer to rotate to fully fuse the self-adhesive solution and the hardening agent solution;

step 203: when the second liquid level sensor detects that the glue filling liquid level is lower than the second liquid level sensor, repeating the step 201 and the step 202; when the second liquid level sensor detects that the surface of the glue filling liquid is higher than that of the second liquid level sensor, executing the next step; step 204: when the first liquid level sensor detects that the surface of the potting adhesive is higher than that of the first liquid level sensor, the main controller sequentially controls the first electromagnetic valve and the second electromagnetic valve to be closed, and the ratio of the opening time of the first electromagnetic valve to the opening time of the second electromagnetic valve is equal to the set potting adhesive ratio; when the first level sensor detects that the glue level is lower than the first inter-leaf sensor, step 203 is repeated.

In a further embodiment, the process of step 3 is:

step 301: when the first position sensor detects that the input end of the conveyor is provided with an electronic element, the main controller controls the servo motor to operate through the frequency converter, and the frequency converter controls the rotating speed of the servo motor to convey the electronic element to the position right below the glue pouring nozzle in a set operation time;

step 302: when the second position sensor detects the electronic element, the main controller controls the servo motor to stop running, controls the third electromagnetic valve to open and carry out pouring sealant on the electronic element according to the set pouring sealant time, controls the third electromagnetic valve to close after the pouring sealant is finished, and controls the servo motor to run to transport the electronic element to the output end of the conveyor;

step 303: when the first position sensor detects the electronic component, repeatedly executing the step 301 and the step 302;

step 304: when the first position sensor does not detect the electronic component and the second position sensor detects the electronic component, repeating step 302;

step 305: when the first position sensor does not detect the electronic component while the second position sensor does not detect the electronic component, the system stops operating.

The electronic component pouring sealant control system has the advantages that the S7-200 type P L C is adopted to automatically control the pouring sealant flow in the electronic product production process, human intervention is reduced, production efficiency of electronic products is guaranteed, the electronic component pouring sealant rhythm is guaranteed by controlling the operation time and the pouring sealant time of the electronic components, production efficiency is guaranteed, pouring sealant quality is improved by controlling the pouring sealant proportion, quality of high-quality electronic products is improved, control parameter setting of the control system is achieved by designing the information input module, and universality of the pouring sealant production line on different electronic products is achieved.

Drawings

Fig. 1 is a schematic connection diagram of a control system for electronic product production according to the present invention.

Fig. 2 is a schematic structural diagram of a control system for electronic product production according to the present invention.

FIG. 3 is a schematic diagram of the hardware connections of the master controller of the present invention.

Fig. 4 is a flowchart of a control method for the control system used in the production of electronic products according to the present invention.

Fig. 5 is a flow chart of the glue filling control method of the invention.

FIG. 6 is a flowchart illustrating the operation of the electronic component potting adhesive according to the present invention.

The reference signs are: the glue pouring device 10, the conveyor 101, the servo motor 102, the glue pouring box 103, the glue pouring nozzle 104, the first glue inlet pipe 105, the second glue inlet pipe 106, the stirrer 107, the driving motor 108, the first position sensor 201, the second position sensor 202, the third position sensor 203, the first liquid level sensor 204, the second liquid level sensor 205, the temperature sensor 206, the main controller 301, the frequency converter 302, the first electromagnetic valve 303, the second electromagnetic valve 304, the third electromagnetic valve 305, the interaction module 40, the PC 401 and the display screen 402.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the invention.

Researches of researchers find that in order to improve the insulation, shock-proof and waterproof effects of electronic products, the electronic elements need to be poured with the sealant during the packaging of the electronic products. However, many electronic product manufacturing enterprises adopt manual control or semi-automatic control during pouring sealant, and the production mode can cause the following problems in the production of electronic products:

1. in the process of pouring the sealant, the production rhythm is disturbed by human intervention, so that the efficiency of pouring the sealant for the electronic element is reduced, and the production efficiency of the electronic product is reduced; for example, the surplus of the potting adhesive is insufficient, the production line needs to be suspended to supplement the potting adhesive, or the electronic element is subjected to sampling inspection before the potting adhesive, so that the supply of the electronic element is interrupted during the potting adhesive;

2. the glue filling ratio is not accurate, so that the quality of the glue filling is reduced, and the quality of electronic products is reduced; some enterprises adopt manual dispensing of the potting adhesive, which easily causes a potting adhesive proportioning error and influences the potting adhesive quality, thereby influencing the potting adhesive quality of electronic elements;

3. electronic production enterprises produce various electronic elements, the size and the structure of each kind of electron have differences, therefore the encapsulating time, the encapsulating ratio also have differences, it is great to set up a plurality of encapsulating production lines expenses simultaneously, therefore partial enterprise can improve the commonality of production line through the mode of manual control or semi-automatization control, but this automation level that can reduce electronic product production reduces, and then repeated production problem 1 and problem 2 cause vicious circle.

In order to improve the automation level of electronic products in the production process of pouring sealant and reduce the occurrence of the above problems, the present invention provides a control system for electronic product production, as shown in fig. 1 and 2, the control system includes a pouring sealant device 10, a detection module, a control module, and an interaction module 40.

The glue filling apparatus 10 in the present embodiment includes a transfer part and a glue filling part. Wherein the transmission component comprises a transmitter 101 and a servo motor 102 for driving the transmitter 101 to operate. The glue filling part comprises a glue filling box body 103 and a glue filling nozzle 104, the upper half part of the glue filling box body 103 is of a cylindrical structure, and the lower half part of the glue filling box body 103 is of an inverted conical structure; the glue filling nozzles 104 are communicated with the bottom of the glue filling box body 103, the glue filling nozzles 104 are vertically arranged, and the glue filling nozzles 104 are located above the middle of the conveyor 101. When the conveyor 101 transports the electronic component to below the glue filling nozzle 104, the glue filling nozzle injects the glue into the electronic component. The general potting adhesive for electronic products is composed of two solutions, such as two-liquid silicone rubber, two-liquid polyurethane, two-liquid epoxy resin, and the like. In the embodiment, double-liquid epoxy resin is adopted, one of the two groups of solutions is epoxy resin original glue, the other is a hardening agent, and the two groups of solutions can be hardened and fixedly connected after being fused; therefore, the glue filling component in this embodiment further includes a first glue inlet pipe 105 for injecting the epoxy resin self-glue solution into the glue filling box 103 and a second glue inlet pipe 106 for injecting the hardener solution into the glue filling box 103; and the first rubber inlet pipe 105 and the second rubber inlet pipe 106 are both communicated with the top of the glue pouring box body 103. In order to enable the glue solution and the hardening agent solution to be better fused, the glue pouring component further comprises a stirrer 107 and a driving motor 108 for driving the stirrer 107 to rotate; wherein, the vertical setting of driving motor 108, the shell of driving motor 108 and the top outer wall fixed connection of encapsulating box 103, driving motor 108's output shaft from last down run through encapsulating box 103 the top and extend to in the encapsulating box 103 with agitator 107 fixed connection, driving motor 108 operates and drives agitator 107 and rotates, stir this gluey solution in the encapsulating box 103 and its solution of sclerosis, promote the integration of two kinds of solutions, thereby improve the homogeneity of encapsulating, and then promote electronic component's encapsulating glue quality.

The detection module in this embodiment comprises a first position sensor 201, a second position sensor 202, a third position sensor 203, a first level sensor 204 and a second level sensor 205. The first position sensor 201 is arranged on one side of the conveyor 101 close to the input end, and the first position sensor 201 detects whether the input end of the conveyor 101 is supplied with electronic components; the second position sensor 202 is arranged on one side of the conveyor 101 close to the middle part, and the second position sensor 202 detects whether an electronic element is arranged below the glue filling nozzle 104; the third position sensor 203 is disposed on a side of the conveyor 101 near the output end, and the third position sensor 203 detects whether the electronic components are supplied to the input end of the conveyor 101. The first position sensor 201, the second position sensor 202 and the third position sensor 203 are all photoelectric sensors with the model number of PRDT12-8-O-V, the transmitting end and the receiving end of each photoelectric sensor are respectively positioned at two sides of the transmitter 101, and when infrared light emitted by the transmitting end of each photoelectric sensor directly irradiates the receiving end, no electronic element is arranged at the position on the transmitter 101, which is level to the photoelectric sensors; when the receiving end of the photoelectric sensor cannot receive the infrared light emitted from the emitting end, it indicates that there are electronic components on the transmitter 101 at a position flush with the photoelectric sensor. The third position sensor 203 is arranged to detect the electronic components that have been encapsulated, and to provide for assembly of the electronic components in a subsequent assembly step. First level sensor in this embodiment is located the top of second level sensor 205, and the one end that is close to the top in encapsulating box 103 is located to the sense terminal of first level sensor 204, and the one end that is close to the bottom in encapsulating box 103 is located to the sense terminal of second level sensor 205, and first level sensor 204 and second level sensor 205 detect the encapsulating surplus in encapsulating box 103. The first liquid level sensor 204 and the second liquid level sensor 205 both adopt a static pressure type liquid level transmitter with model TW14-SSK231, the measuring range is 0-200M, and the working voltage is 24V.

The control module in this embodiment includes a main controller 301, a frequency converter 302, a first solenoid valve 303, a second solenoid valve 304, and a third solenoid valve 305. The main controller 301 comprises a plurality of input ports and output ports, and the first position sensor 201, the second position sensor 202, the first liquid level sensor 204 and the second liquid level sensor 205 are respectively connected with the input ports of the main controller 301; meanwhile, the frequency converter 302, the first electromagnetic valve 303, the second electromagnetic valve 304 and the third electromagnetic valve 305 are respectively connected with an output port of the main controller 301, the main controller 301 controls the operation, speed regulation and stop of the servo motor 102 through the frequency converter 302, the main controller controls the circulation of the first rubber inlet pipe 105 through the first electromagnetic valve 303 according to feedback information of an input end, controls the circulation of the second rubber inlet pipe 106 through the second electromagnetic valve 304, and controls the circulation of the glue filling nozzle 104 through the third electromagnetic valve 305.

The interactive module 40 in this embodiment includes a PC 401, and an alarm indicator, an operation indicator, and a stop indicator provided on the glue filling apparatus 10. The PC 401 and the main controller 301 establish a communication network through an RS-485 interface and a network connector. The PC 401 includes an information input module and an information output module. And control parameters of the control system are input through an information output module at the PC 401 end. The control parameters of the control system provided in this embodiment mainly include a running time t1 from the output end of the conveyor 101 to the lower side of the glue pouring nozzle, a time t2 for the electronic component to perform glue pouring under the glue pouring nozzle 104, and a glue pouring ratio X, that is, a ratio of the glue solution to the hardening agent. The main controller 301 controls the operating speed of the servo motor 102 through the frequency converter 302 and stops to realize automatic control on the operating time and glue pouring time of the electronic element; meanwhile, the main controller 301 controls the amount of the glue solution injected into the glue pouring box 103 by the first glue inlet tube 105 through the first electromagnetic valve 303 and controls the amount of the hardener solution injected into the glue pouring box 103 by the second glue inlet tube 106 through the second electromagnetic valve 304, so that the automatic control of the glue pouring ratio X is realized, and the full-automatic operation of the electronic element in the production of the pouring glue is realized. When the pouring sealant production needs to be carried out on other types of electronic elements, the common pouring sealant production line of different types of electronic elements can be realized only by correspondingly adjusting t1, t2 and X. And the information data of the operation condition of the control system is output through the information output module, and an operator can monitor the whole operation condition of the system in real time through the information fed back by the information output module, so that the intelligent level during the production of the pouring sealant is further improved. In order to promote the interaction between the PC 401 and the human PC 401 of the operator, the PC 401 is further connected to a display screen 402, the display screen 402 can simply and intuitively display the operating parameters of the system, so as to improve the convenience of the interaction between the human PC 401 and the operator, and meanwhile, in order to enable the operator to more conveniently input the control command, the display screen 402 in this embodiment may be a touch display screen 402, or the PC 401 may be connected to an input keyboard to input the control command. The alarm indicator light, the operation indicator light and the stop indicator light in this embodiment are respectively connected to the output port of the main controller 301, and the main controller 301 controls the corresponding indicator light to be turned on according to the system operation condition. When the system has a fault, the alarm indicator lamp is lightened; when the system normally runs, the running indicator lamp is lightened; when the system stops running, the stop indicator lamp is lightened. The operator can know the operation condition of the system in time through the arrangement.

The mobility of the potting adhesive solution is influenced by the temperature, when the temperature is too low, the potting adhesive solution in the potting adhesive box body 103 may be condensed to cause insufficient mobility, and the insufficient mobility of the potting adhesive solution may cause the potting adhesive nozzle 104 to be blocked or the quality of the potting adhesive for the electronic element to be unqualified. In order to avoid this, in a further embodiment, the detection module further includes a temperature sensor 206, a detection end of the temperature sensor 206 is disposed in the middle of the potting case 103, and the temperature sensor 206 is connected to an input end of the main controller 301. The temperature sensor 206 detects the potting temperature in the potting box 103 in real time. When the glue filling temperature in the glue filling box 103 is low, the main controller 301 controls the system to stop running. Then, the pouring sealant solution in the pouring sealant box body 103 is cleaned through cleaning equipment, so that the quality of the pouring sealant of the electronic element is promoted. Therefore, control system's control parameter still includes pouring glue temperature T in this embodiment, realizes the mobile control of pouring glue in pouring glue box 103 through setting for pouring glue temperature T, further promotes electronic component's pouring glue quality.

Referring to fig. 3, the main controller 301 in this embodiment adopts a P L C controller with signals of S7-200CPU226, the main controller 301 receives detection signals of the first position sensor 201, the second position sensor 202, the third position sensor 203, the first liquid level sensor 204, the second position sensor 202 and the temperature sensor 206, and implements control requirements through the first solenoid valve 303, the second solenoid valve 304, the third solenoid valve 305, the driving motor 108 and the frequency converter 302, the control requirements are that a start button is pressed to put the potting device into operation, the main controller 301 controls the first solenoid valve 303 and the second solenoid valve 304 to open to inject the potting solution into the potting box 103, the ratio of the potting solution is controlled by the opening time of the first solenoid valve 303 and the second solenoid valve 304, the first liquid level sensor 204 and the second liquid level sensor 205 are used to perform allowance detection on the potting solution in the potting box 103, the temperature is detected by the temperature sensor 206, the main controller 301 controls the driving motor 108 to operate, the potting solution stirring, the operating time indicator 301 controls the operating time of the potting solution through the first solenoid valve 303 and the second liquid level sensor 205 to input indicator lamp 301, the electronic indicator lamp 301 controls the operating time indicator that the operating and the operating indicator lamp 301 controls the operating of the operating and the electronic sealant waiting for the operating controller 301 to input and the operating state indicator that the operating state indicator lamp 301 controls the operating state of the operating state indicator that the operating state indicator lamp 200 and the operating state indicator that the operating state indicator lamp 301 controls the operating state indicator that the operating state indicator lamp 200 and the electronic sealant operating state indicator lamp 301 controls the operating state indicator lamp:

TABLE 1S7-200 TYPE P L C CPU226 INPUT AND OUTPUT POINT DISTRIBUTION TABLE

Serial number	P L C terminal	Electric sign	Description of the function
				1	I0.0	SB1	Start button
2	I0.1	SB2	Stop button
				3	I0.2	SB3	Emergency stop button
4	I0.3	B1	First position sensor
				5	I0.4	B2	Second position sensor
6	I0.5	B3	Third position sensor
				7	I0.6	BL1	First liquid level sensor
8	I0.7	BL2	Second liquid level sensor
				9	I0.8	BH	Temperature sensor
10	Q0.0	YV1	First electricityMagnetic valve
				11	Q0.1	YV2	Second electromagnetic valve
12	Q0.2	YV3	Third solenoid valve
				13	Q0.3	M	Driving motor
14	Q0.4	TC	Temperature alarm
				15	Q0.5	L1	Alarm indicator lamp
16	Q0.6	L2	Running indicator lamp
				17	Q0.7	L3	Stop indicator light
18	3(B) \8(A) \1 (ground)	MM440	Frequency converter
				19	1M	+24V	Positive connection of power supply
20	1L、2L	GND	Power supply ground

The frequency converter 302 in the embodiment adopts an MM440 frequency converter, the MM440 frequency converter is specially designed for application of higher dynamic response, and the input of fast response and positioning of a deceleration slope are ensured through advanced vector control, so that high-precision work is realized. The MM440 frequency converter is adopted to control the servo motor 102, so that the high standard requirements of the running time and the position positioning of the electronic element during the production of the pouring sealant can be met, and the quality of the pouring sealant of the electronic element is improved. The frequency converter 302 and the main controller 301S7-200CPU226 in this embodiment adopt the USS communication protocol to control the operation, speed regulation, and stop of the servo motor 102. The USS Protocol (Universal Serial Interface Protocol) is a Protocol for data communication based on a Serial bus. The RS485 interface is a standard interface of the MM4 series frequency converter 302, and due to the fact that the RS485 has the advantages of being good in anti-interference capacity, long in transmission distance, capable of supporting multi-point communication and the like, the RS 485-based USS communication is used in practical application mostly.

According to the above control requirements, with reference to fig. 4, a control method for a control system used in electronic product production according to the present invention is now described, specifically, the control method is as follows:

step 1: the system is started, initialization setting is carried out, glue pouring time and glue pouring ratio are determined according to the type of the electronic element, and control parameters of glue pouring ratio X, electronic element running time t1 and electronic element glue pouring time t2 are input into the control system through the PC 401;

step 2: when the system runs, the main controller 301 controls the first electromagnetic valve 303 and the second electromagnetic valve 304 to open according to the set glue filling ratio X to fill glue into the glue filling box body 103, simultaneously monitors the glue filling allowance in the glue filling box, and supplements the glue filling in the glue filling box according to the glue filling ratio when the glue filling allowance is insufficient;

and step 3: the positions of the electronic elements are detected by the first position sensor 201 and the second position sensor 202, the servo electric appliance drives the conveyor 101 to convey the electronic elements to the position under the glue pouring touch nozzle for pouring glue, and in the process, the main controller 301 controls the actual running time of the electronic elements and the actual glue pouring time of the electronic elements.

With reference to fig. 5, in step 2, the main controller 301 controls the first solenoid valve 303 and the second solenoid valve 304 to open the glue filling tank 103 according to the set glue filling ratio X, and simultaneously monitors the glue filling allowance in the glue filling tank, when the glue filling allowance is insufficient, the process of supplementing the glue filling in the glue filling tank according to the glue filling ratio can be described in detail as follows:

step 201: the main controller 301 controls the first electromagnetic valve 303 to open so that the first rubber inlet pipe 105 injects the self-hardening agent solution into the rubber pouring box, and simultaneously, the main controller 301 controls the second electromagnetic valve 304 to open so that the second rubber inlet pipe 106 injects the hardening agent solution into the rubber pouring box 103;

step 202: the main controller 301 controls the driving motor 108 to operate, so that the driving motor 108 drives the stirrer 107 to rotate to fully fuse the self-adhesive solution and the hardening agent solution;

step 203: when the second liquid level sensor 205 detects that the glue filling level is lower than the second liquid level sensor 205, repeating the step 201 and the step 202; when the second liquid level sensor 205 detects that the surface of the potting liquid is higher than that of the second liquid level sensor 205, executing the next step;

step 204: when the first liquid level sensor 204 detects that the glue filling liquid level is higher than the first liquid level sensor 204, the main controller 301 controls the first electromagnetic valve 303 and the second electromagnetic valve 304 to be closed in sequence, and the ratio of the opening time of the first electromagnetic valve 303 to the opening time of the second electromagnetic valve 304 is equal to the set glue filling ratio; when the first level sensor 204 detects that the height of the glue filling level is lower than the first level sensor 204, step 203 is repeated.

By the control method, the real-time control of the glue pouring allowance in the glue pouring box can be realized, when the glue pouring allowance is insufficient, a production line does not need to be suspended, the main control system supplements the glue pouring according to the set glue pouring ratio, and meanwhile, the accuracy of the glue pouring ratio can be ensured, and the quality of the glue pouring of the electronic element is improved.

Referring to fig. 6, in step 3, the control process of detecting the position of the electronic component by the first position sensor 201 and the second position sensor 202 and conveying the electronic component to the position under the pouring nozzle by the transmission machine 101 driven by the servo electrical appliance for pouring the sealant can be described in detail as follows:

step 301: when the first position sensor 201 detects that the input end of the conveyor 101 has electronic components, the main controller 301 controls the servo motor 102 to operate, and controls the rotating speed of the servo motor 102 through the frequency converter 302 to convey the electronic components to the position right below the glue pouring nozzle 104 at a set operating time;

step 302: when the second position sensor 202 detects the electronic component, the main controller 301 controls the servo motor 102 to stop operating, and simultaneously controls the third electromagnetic valve 305 to be opened to perform pouring sealant on the electronic component according to the set pouring sealant time, after the pouring sealant is finished, the main controller 301 controls the third electromagnetic valve 305 to be closed, and simultaneously controls the servo motor 102 to operate to transport the electronic component to the output end of the conveyor 101;

step 303: when the first position sensor 201 detects the electronic component, steps 301 and 302 are repeatedly executed;

step 304: when the electronic component is not detected by the first position sensor 201 and the electronic component is detected by the second position sensor 202, repeating step 302;

step 305: when the first position sensor 201 does not detect the electronic component while the second position sensor 202 does not detect the electronic component, the system stops operating.

By the control method, the precise control of the glue pouring process of the electronic element can be realized, and when the supply of the electronic element on a production line is interrupted due to the sampling inspection, the control system can judge the situation and interrupt the pouring of the glue; the control system will control the glue-pouring device 10 to stop pouring glue only if the supply of electronic components is interrupted continuously. The control method can effectively avoid the artificial interference and ensure the pouring sealant efficiency of the electronic element.

The control system and the control method thereof provided by the invention can realize effective control on pouring sealant efficiency, pouring sealant quality and a common production line of various electronic elements: firstly, the electronic element pouring sealant period is controlled by setting the electronic element running time t1 and the electronic element pouring sealant time t2, wherein the electronic element pouring sealant period t is t1+ t 2; therefore, to improve the production efficiency, priority needs to be given to smaller t1 and t2, since t2 is closely related to the quality of the potting compound of the electronic component, and thus the adjustment of t1 is crucial; the embodiment adjusts the rotating speed of the servo electronics by the main control frequency converter 302, so that the transmission speed of the transmitter 101 is adjusted, the time adjustment of t1 is realized, and the method has important reference significance for actual production. Secondly, by setting a glue pouring ratio and controlling the first glue inlet pipe 105 and the second glue inlet pipe 106 to inject corresponding solutions according to the ratio by the main controller 301, the quality of glue pouring is improved, and the quality of the pouring glue of the electronic element is improved; some manufacturing enterprises adopt separately to place two kinds of liquid at present, carry out the ratio to the encapsulating through the mode of proportional pump ratio measurement, when needs fill, go out to mix again after gluing through the proportional pump and mix and fill, and this kind of mode not only needs two proportional pumps, and simultaneously, the encapsulating homogeneity after mixing is difficult to guarantee, and the ratio precision is not accurate enough. In this embodiment, by adopting the first electromagnetic valve 303 to control the first rubber inlet tube 105 and the second rubber inlet tube 106 of the second electromagnetic valve 304, the main controller 301 controls the time t1 'of the self-adhesive solution injected into the first rubber inlet tube 105 and the time t 2' of the hardening agent injected into the second rubber inlet tube 106 according to the set glue filling ratio, and the ratio X of the glue filling is t1 '/t 2', and the time control is converted into the accurate control of the glue filling ratio, so as to realize the control of the glue filling quality and promote the improvement of the quality of the glue filling for electronic components. Thirdly, the pouring ratio and the pouring time of the pouring sealant are determined according to the sizes and the structures of different types of electronic elements, then the control parameters of the control system are set through the PC 401 information input module, and the main controller 301 automatically controls the pouring sealant production flow of the electronic elements according to the set control parameters, so that the universality of the pouring sealant production line on different electronic products is realized.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the embodiments, and various equivalent changes can be made to the technical solution of the present invention within the technical idea of the present invention, and these equivalent changes are within the protection scope of the present invention.