Automatic control equipment for blending electronic glass fabric treating fluid

Abstract

The invention provides automatic control equipment for blending an electronic glass fabric treating fluid. The automatic control equipment comprises a fluid blending barrel, a controller, a stirring assembly, a plurality of raw material placing barrels and a pure water pipeline, a discharge hole is formed in the bottom of the liquid preparation barrel; a non-contact liquid level meter is arranged outside the liquid preparation barrel; in a working state, the controller controls the pure water pipeline to add water into the liquid preparation barrel; after the non-contact liquid level meter detects that the liquid level reaches the upper liquid level limit, the pure water pipeline is closed, and the stirring assembly is opened; the controller controls the multiple raw material containing barrels to add raw materials into the liquid preparing barrel in sequence, and the matched stirring duration is set for each raw material. According to the implementation mode, the various raw materials in the multiple raw material placing barrels are put into the liquid preparation barrel in sequence, and the matched stirring duration is set for each raw material, so that the reliability of the equipment for preparing the treatment liquid is improved. In addition, the non-contact liquid level meter is adopted, so that the non-contact liquid level meter can be prevented from being in direct contact with the raw materials and is prevented from being impacted, and the service life is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of electronic-grade glass fiber cloth, and in particular to an automatic control device for preparing electronic glass fiber cloth treatment liquid. Background Art

[0002] In recent years, as the electronic industry develops towards high precision, high density, high performance, microporous, thin and high-rise, copper-clad laminates have put forward high precision, high uniformity, high purification and high stability requirements for electronic-grade glass fiber cloth. To this end, large electronic cloth manufacturers in advanced industrial countries around the world have taken corresponding effective measures to strive to eliminate trace metal impurities in electronic cloth to the maximum extent, reduce micro bubbles in electronic yarn, improve the smoothness and resin impregnation of electronic cloth, improve the drilling performance of electronic cloth, adjust the fabric structure of electronic cloth, improve the glass composition of electronic cloth and improve the treatment agent of electronic cloth to improve the quality of electronic-grade glass kilowatt cloth.

[0003] In the production process of electronic grade glass fiber cloth, the film-forming agent and coupling agent in the treatment liquid can improve the surface properties of the glass fiber cloth, increase its surface area, and make it easier to combine with the resin. Therefore, the quality of the treatment liquid in the impregnation stage will directly affect the quality of the glass fiber cloth.

[0004] The existing production conditions require employees to manually open the valve to release water and materials into the slurry barrel. The amount of water and materials to be released is determined entirely by experience, and then the stirring motor is turned on for stirring. The precise ratio of the treatment liquid and water cannot be achieved, and the order of feeding and stirring time cannot be controlled, which affects the quality of the treatment liquid. Summary of the invention

[0005] The content of the present invention is used to introduce the concepts in a brief form, which will be described in detail in the detailed implementation section below. The content of the present disclosure is not intended to identify the key features or essential features of the technical solution claimed for protection, nor is it intended to limit the scope of the technical solution claimed for protection.

[0006] Some embodiments of the present invention provide an automated control device for preparing electronic glass fiber cloth processing liquid to solve the technical problems mentioned in the above background technology section.

[0007] The automatic control device for preparing electronic glass fiber cloth processing liquid comprises a liquid preparation barrel, a controller, a stirring component, and a plurality of raw material placement barrels and pure water pipelines connected to the upper end of the liquid preparation barrel, wherein:

[0008] A discharge port is provided at the bottom of the liquid preparation barrel;

[0009] A non-contact liquid level meter is arranged outside the liquid dispensing barrel;

[0010] In the working state, the controller controls the pure water pipeline to add water into the liquid mixing barrel;

[0011] In response to the non-contact liquid level meter detecting that the liquid level reaches the upper limit of the liquid level, closing the pure water pipeline and opening the stirring component;

[0012] The controller controls multiple raw material placement barrels to add raw materials into the liquid preparation barrel in sequence, and sets an appropriate stirring time for each raw material.

[0013] Optionally, the discharge port, multiple raw material placement barrels and pure water pipeline are respectively provided with a discharge electric valve, a raw material discharge electric valve and a pure water discharge electric valve which are communicatively connected to the controller.

[0014] Optionally, the stirring assembly includes a stirring motor, a stirring rod and a stirring blade which are communicatively connected to the controller; the stirring motor is fixed to the upper end of the liquid preparation barrel, the transmission shaft of the stirring motor is connected to the upper end of the stirring rod, and the lower end of the stirring rod extends into the bottom of the liquid preparation barrel; a plurality of stirring blades are fixed in a circular array at the lower end of the stirring rod.

[0015] Optionally, the stirring motor is a variable frequency reduction motor.

[0016] Optionally, the device further comprises an alarm communicatively connected to the controller;

[0017] In response to the liquid level being lower than the lower limit of the liquid level, the alarm outputs an alarm message and shuts down the stirring component.

[0018] Optionally, the alarm information includes at least one of the following: vibration of a buzzer, flashing of an alarm light, and display on a monitor.

[0019] Optionally, a first non-contact capacitive sensor and a second non-contact capacitive sensor communicatively connected to the controller are respectively provided on the outer wall of the liquid dispensing barrel at positions corresponding to the upper liquid level limit and the lower liquid level limit.

[0020] Optionally, the device further comprises an indicator light communicatively connected to the controller;

[0021] In response to the treatment liquid being prepared, the indicator light turns on;

[0022] The discharge electric valve is configured to be allowed to open when the indicator light is on.

[0023] Optionally, according to the automated control device for preparing electronic glass fiber cloth processing liquid according to claim 1, it is characterized in that the controller is communicatively connected to a main human-machine interface and at least one auxiliary human-machine interface.

[0024] Optionally, the batching barrel is made of stainless steel.

[0025] The above embodiments of the present invention have the following beneficial effects:

[0026] By placing multiple raw materials in multiple raw material barrels into the liquid preparation barrel in sequence and setting an appropriate stirring time for each raw material, the reliability of the equipment is improved by avoiding the occurrence of errors in the sequence of adding multiple raw materials and insufficient stirring while realizing automatic preparation of the processing liquid.

[0027] In addition, the use of non-contact liquid level gauges, which are set outside the liquid dispensing barrel, can avoid direct contact with the raw materials and is easier to clean. For the liquid dispensing barrel, compared with setting the liquid level gauge inside, it reduces the number of stains and is also easier to clean.

[0028] Finally, the non-contact liquid level meter is set outside the liquid mixing barrel, which can also prevent the force generated by stirring in the liquid mixing barrel from long-term impact on the non-contact liquid level meter, causing damage and failure of the non-contact liquid level meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 The figure is a schematic structural diagram of an embodiment of an automatic control device for preparing electronic glass fiber cloth processing liquid according to the present invention.

[0031] Description of reference numerals:

[0032] 1. Liquid preparation barrel; 2. First non-contact capacitive sensor; 3. Non-contact liquid level gauge; 4. Second non-contact capacitive sensor; 5. Discharge electric valve; 6. Pure water pipeline; 7. Raw material A placement barrel; 8. Stirring motor; 9. Raw material B placement barrel; 10. Raw material C placement barrel; 11. Raw material C discharge electric valve; 12. Raw material B discharge electric valve; 13. Raw material A discharge electric valve; 14. Pure water discharge electric valve; 15. Stirring rod; 16. Stirring blades. DETAILED DESCRIPTION

[0033] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0035] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0037] See also Figure 1 , Figure 1 FIG. 1 is a schematic diagram of the structure of an embodiment of the automatic control device for preparing electronic glass fiber cloth processing liquid according to the present invention. Figure 1 As shown, the automatic control device for preparing electronic glass fiber cloth processing liquid includes a liquid preparation barrel 1, and the liquid preparation barrel 1 can be made of stainless steel material.

[0038] The liquid preparation barrel 1 is connected with a raw material A placement barrel 7, a raw material B placement barrel 9, a raw material C placement barrel 10 for adding raw materials, and a pure water pipeline 6 for adding water. The outlet end of the raw material A placement barrel 7 is provided with a raw material A discharge electric valve 13; the outlet end of the raw material B placement barrel 9 is provided with a raw material B discharge electric valve 12; the outlet end of the raw material C placement barrel 10 is provided with a raw material C discharge electric valve 11. The pure water pipeline 6 is provided with a pure water discharge electric valve 14.

[0039] The bottom of the liquid dispensing barrel 1 may be provided with a discharge port, which is provided with a discharge electric valve 5. The bottom of the liquid dispensing barrel 1 may be designed in a conical shape, so that the treatment liquid is discharged more smoothly, residue is avoided, and the liquid dispensing barrel 1 is convenient to clean.

[0040] It should be noted that, although the above description is made by taking three raw material placement barrels as an example, those skilled in the art can set a corresponding number of raw material placement barrels according to the types of raw materials required for the treatment liquid.

[0041] The device also includes a stirring assembly, specifically including a stirring motor 8, a stirring rod 15 and a stirring blade 16. The stirring motor 8 is fixed to the upper end of the liquid preparation barrel 1, and the transmission shaft of the stirring motor 8 is connected to the upper end of the stirring rod 15, and the lower end of the stirring rod 15 extends into the bottom of the liquid preparation barrel 1. A plurality of stirring blades 16 are fixed in a circular array at the lower end of the stirring rod 15. As an example, the stirring motor 8 can be a variable frequency reduction motor, so that the stirring speed can be adjusted according to the requirements of the raw materials.

[0042] In order to better detect the liquid level, a liquid level meter can be set outside the liquid dispensing barrel 1 or at the discharge port at the bottom. The liquid level meter can be a non-contact liquid level meter 3 that collects liquid level based on ultrasonic, radar, capacitance, etc. Those skilled in the art can choose according to actual conditions.

[0043] The upper limit of the liquid level can also be set. When the above-mentioned pure water discharge electric valve 14 is opened, when the liquid level collected by the non-contact liquid level meter 3 reaches the upper limit of the liquid level, the pure water discharge electric valve 14 can be controlled to close, thereby completing the water adding operation. Next, the stirring motor 8 drives the stirring rod 15 to make the stirring blade 16 start stirring.

[0044] Of course, a first non-contact capacitive sensor 2 may also be installed at a position corresponding to the upper limit of the liquid level outside the liquid dispensing barrel 1 to detect whether the liquid level exceeds the upper limit of the liquid level. That is, when the first non-contact capacitive sensor 2 detects that the liquid level exceeds the upper limit, the pure water drain electric valve 14 is controlled to close.

[0045] The automatic control of the equipment can be realized by a controller connected by Ethernet and one or more human-machine interfaces. The controller can be a PLC (Programmable Logic Controller), which can be electrically connected to the frequency converter and the stirring motor 8, and the speed of the stirring motor 8 can be adjusted by the frequency converter. The controller can also be connected to the above-mentioned electric valves, non-contact liquid level gauges, non-contact capacitive sensors, etc., so as to complete the automatic control of the above-mentioned treatment liquid in the preparation process.

[0046] The staff can place the weighed raw materials A, B and C into the corresponding raw material A placing bucket 7, raw material B placing bucket 9 and raw material C placing bucket 10. Then, according to the order of adding the raw materials and the stirring time of each raw material, the corresponding electric valves are controlled to open or close.

[0047] For example, according to the order of feeding, the electric valve 13 for discharging raw material A is opened first, so that raw material A enters the liquid preparation barrel 1 and is stirred according to the stirring time of raw material A. Then, the electric valve 12 for discharging raw material B is opened, so that raw material B enters the liquid preparation barrel 1 and is stirred according to the stirring time of raw material B. Finally, the electric valve 11 for discharging raw material C is opened, so that raw material C enters the liquid preparation barrel 1 and is stirred according to the stirring time of raw material C. Thus, the preparation of the treatment liquid is completed.

[0048] In order to prevent the discharge electric valve 5 from being opened when the preparation is not completed, the device only controls the indicator light connected to the controller to turn on after the preparation of the treatment liquid is completed. The discharge electric valve 5 is set to be allowed to open only when the indicator light is turned on. In this way, it can prevent the unprepared treatment liquid from being discharged and prevent the treatment liquid from being put into the subsequent process, thereby improving the reliability of the equipment and ensuring the quality of the electronic fiber cloth.

[0049] If during the preparation of the treatment liquid, leakage or other unexpected conditions occur in the liquid preparation barrel 1, causing the liquid level to be too low, the stirring assembly will continue to idle, causing additional power consumption, and the staff will not be able to understand the risk in time.

[0050] Therefore, the device can set a lower limit of the liquid level. When the liquid level collected by the non-contact liquid level meter 3 is lower than the lower limit of the liquid level, an alarm message can be output through an alarm connected to the controller. The above alarm message can be the vibration of a buzzer, the flashing of an alarm light, or the display of words such as "lack of material in the barrel", and the stopping of the stirring component to avoid the idling of the mixing barrel 1 after the material is gone, thereby saving power consumption and making the device more energy-saving and environmentally friendly.

[0051] Of course, a second non-contact capacitive sensor 4 may also be installed at a position outside the liquid dispensing barrel 1 corresponding to the lower limit of the liquid level, so as to detect whether the liquid level is lower than the lower limit of the liquid level.

[0052] The above technical solution adopts a non-contact liquid level meter 3, which is arranged outside the liquid preparation barrel 1, so as to avoid direct contact with the raw materials and is convenient to clean. For the liquid preparation barrel 1, compared with arranging the liquid level meter inside, it reduces the number of stains and is also convenient to clean.

[0053] In addition, the non-contact liquid level meter 3 is arranged outside the liquid mixing barrel 1, which can also prevent the force generated by stirring in the liquid mixing barrel 1 from long-term impact on the non-contact liquid level meter 3, causing the non-contact liquid level meter 3 to be damaged and fail.

[0054] The non-contact liquid level meter 3 is installed at the discharge port. Compared with the conventional liquid level meter, it can detect even if there is only a small amount of liquid in the liquid mixing barrel 1, thereby improving the reliability of the device.

[0055] The above-mentioned human-machine interface can be one, which can be placed in a central control room or a designated place, through which the process parameters can be changed, such as the stirring frequency of the stirring motor 8, the order of adding raw materials, the stirring time of raw materials, etc. The equipment can also be remotely controlled, status monitored, or alarm information received.

[0056] There can also be two human-machine interfaces. One human-machine interface is set near the equipment as the main human-machine interface, which can change process parameters, remotely control, monitor status or receive alarm information, etc. The other human-machine interface is placed in the working area near the discharge port as an auxiliary human-machine interface, and has functions such as status monitoring or receiving alarm information.

[0057] As an example, the equipment can be placed in a constant temperature place on the second floor. A main human-machine interface can be set up on the second floor to intervene in the operation of the equipment. The discharge port of the equipment can be extended to the first floor, and the staff can collect the prepared treatment liquid on the first floor for subsequent process steps. Placing an auxiliary human-machine interface on the first floor helps the staff understand the preparation status of the treatment liquid and receive alarm information, but cannot intervene in the operation of the equipment. That is, it is impossible to intervene in the operation of the equipment, thereby avoiding accidents caused by remote operations.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automatic control device for preparing electronic glass fiber cloth processing liquid, characterized in that: It includes a liquid preparation barrel, a controller, a stirring assembly, and a plurality of raw material placement barrels and pure water pipelines connected to the upper end of the liquid preparation barrel, wherein: A discharge port is provided at the bottom of the liquid dispensing barrel; A non-contact liquid level meter is arranged outside the liquid dispensing barrel; In the working state, the controller controls the pure water pipeline to add water into the liquid mixing barrel; In response to the non-contact liquid level meter detecting that the liquid level reaches the upper limit of the liquid level, closing the pure water pipeline and opening the stirring component; The controller controls multiple raw material placement barrels to add raw materials into the liquid preparation barrel in sequence, and sets an appropriate stirring time for each raw material.

2. The automatic control device for preparing electronic glass fiber cloth treatment liquid according to claim 1, characterized in that: The discharge port, multiple raw material placement barrels and pure water pipelines are respectively provided with a discharge electric valve, a raw material discharge electric valve and a pure water discharge electric valve which are communicatively connected with the controller.

3. The automatic control device for preparing electronic glass fiber cloth treatment liquid according to claim 1, characterized in that: The stirring assembly includes a stirring motor, a stirring rod and a stirring blade which are communicatively connected to the controller; the stirring motor is fixed to the upper end of the liquid preparation barrel, the transmission shaft of the stirring motor is connected to the upper end of the stirring rod, and the lower end of the stirring rod extends into the bottom of the liquid preparation barrel; a plurality of stirring blades are fixed in a circular array at the lower end of the stirring rod.

4. The automatic control device for preparing electronic glass fiber cloth treatment liquid according to claim 1, characterized in that: The stirring motor is a variable frequency reduction motor.

5. The automatic control device for preparing electronic glass fiber cloth treatment liquid according to claim 1, characterized in that: The device also includes an alarm communicatively connected to the controller; In response to the liquid level being lower than the lower limit of the liquid level, the alarm outputs an alarm message and shuts down the stirring component.

6. The automatic control device for preparing electronic glass fiber cloth treatment liquid according to claim 5, characterized in that: The alarm information includes at least one of the following: vibration of a buzzer, flashing of an alarm light, and display of a display.

7. The automatic control device for preparing electronic glass fiber cloth treatment liquid according to claim 5, characterized in that: A first non-contact capacitive sensor and a second non-contact capacitive sensor communicatively connected to the controller are respectively arranged on the outer wall of the liquid dispensing barrel at positions corresponding to the upper limit of the liquid level and the lower limit of the liquid level.

8. The automatic control device for preparing electronic glass fiber cloth treatment liquid according to claim 1, characterized in that: The device also includes an indicator light communicatively connected to the controller; In response to the treatment liquid being prepared, the indicator light turns on; The discharge electric valve is configured to be allowed to open when the indicator light is on.

9. The automatic control device for preparing electronic glass fiber cloth treatment liquid according to claim 1, characterized in that: The automated control device for preparing electronic glass fiber cloth processing liquid according to claim 1 is characterized in that the controller is communicatively connected to a main human-machine interface and at least one auxiliary human-machine interface.

10. The automatic control device for preparing electronic glass fiber cloth treatment liquid according to claim 1, characterized in that: The batching barrel is made of stainless steel.

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