A method for controlling the stripping and tinning of a coil

Abstract

The present invention discloses a coil stripping and tinning control method, which obtains basic data information of the stripping treatment, the basic data information includes coil length, insulating paint layer composition, coil diameter, type and concentration of paint stripper; establishes a sample database, the sample database internally stores a standard linear variation diagram of the stripping value of different types of coils immersed in different paint strippers versus the stripping time, the paint stripping value is the integrity of the insulating paint layer of the coil; matches the basic data information of the stripping treatment with the sample database, extracts a standard linear variation diagram corresponding to the basic data information; predicts the value of the stripping time when the stripping value is 1 through the standard linear variation diagram. The present invention avoids the problem of verifying whether the stripping treatment is completed by visual inspection or manual stripping of the paint skin or soaking in the paint stripper for a long time to achieve the stripping treatment by predicting the stripping completion time.

Description

Technical Field

[0001] The invention relates to the technical field of coil processing, and in particular to a coil paint stripping and tinning control method. Background Art

[0002] In many motors, factory equipment, household appliances and other products, enameled wire is mostly used as the main raw material for circuit connection. For example, the electromagnetic coil of the solenoid valve is wound with high-strength polyester and modified polyester enameled wire. Its main structure is composed of copper conductor and insulating paint layer. However, when the corresponding electrical connection is made through enameled wire, in order to ensure the connectivity of the circuit, the insulating paint layer on the outside of the enameled wire needs to be removed, and the copper conductor after the paint is removed needs to be tinned.

[0003] For the paint stripping treatment of high-strength enameled wires, such as polyester and modified polyester enameled wires, corresponding paint strippers are needed for paint stripping. The paint stripper is also called a paint remover, which has a strong solubility, dissolves or swells the polymer coating, and separates the coating from the coated object, thereby completing the paint stripping treatment. However, the paint stripper is volatile, anesthetic, and highly corrosive, and even contains a certain amount of carcinogens. In the conventional paint stripping process, most of the paint stripping is verified by visual inspection or manual peeling of the paint, which causes great harm to the staff. Although the paint stripping treatment can be achieved by soaking in the paint stripper for a long time, personal injury can be avoided, but it will cause the operation process to be unsmooth, the operation efficiency is not high, and it is not conducive to automated production. Summary of the invention

[0004] The purpose of the present invention is to provide a coil stripping and tinning control method to solve the following technical problems:

[0005] How to ensure the effectiveness of the coil stripping treatment without causing damage to production efficiency and the health of workers.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A coil stripping and tinning control method comprises the following steps:

[0008] Obtaining basic data information of paint stripping treatment, wherein the basic data information includes coil length, composition of insulating paint layer, coil diameter, type and concentration of paint stripper;

[0009] Establishing a sample database, wherein the sample database stores standard linear variation diagrams of paint stripping values ​​of different types of coils immersed in different paint strippers versus paint stripping time, wherein the paint stripping value is the integrity of the insulating paint layer of the coil, the paint stripping value of a completely paint stripped coil is 1, and the paint stripping value of a coil that has not started to strip is 0;

[0010] Matching the basic data information of the paint stripping process with the sample database, and extracting a standard linear change graph corresponding to the basic data information;

[0011] The value of the paint stripping time when the paint stripping value is 1 is predicted by the standard linear change diagram.

[0012] As a further solution of the present invention: generating the standard linear change graph specifically comprises the following steps:

[0013] Obtaining the composition of the insulating paint layer of the coil;

[0014] Obtain the type and concentration of paint stripper;

[0015] Extracting the paint stripping value of the coil after the coil is immersed in the paint stripper for different time periods;

[0016] Establish a univariate linear regression equation:

[0017] y=ax+b, where y is the paint stripping value and x is the paint stripping time;

[0018] The parameters a and b of the univariate linear regression equation are obtained by the least squares method;

[0019] A coordinate system is established, and the image of the univariate linear regression equation is plotted with the paint stripping value and the paint stripping time as the ordinate and the abscissa, respectively. The image of the univariate linear regression equation is defined as a standard linear change graph.

[0020] As a further solution of the present invention: in the process of generating the standard linear change graph, the paint stripping value is extracted by intermittent extraction. By setting the extraction cycle, the paint stripping value of the coil immersed in the paint stripper is intermittently extracted with the extraction cycle as the time interval. When the paint stripping value is 1, the extraction of the paint stripping value is stopped. The process of extracting the paint stripping value this time is defined as the first paint stripping value extraction, and the extracted data is defined as initial data.

[0021] As a further solution of the present invention: in the process of generating the standard linear change graph, a second paint stripping value extraction is also provided, and the second paint stripping value extraction is set based on the first paint stripping value extraction, and the specific steps are as follows:

[0022] Extract the paint stripping time value when the paint stripping value is 1 in the first paint stripping value extraction;

[0023] Subtract the extraction period from the paint stripping time value to generate a verification time value;

[0024] Set a secondary verification period, where the secondary verification period is n times the extraction period, n∈(0,1);

[0025] The coil is immersed in the paint stripper until the verification time value is reached, and the paint stripping value of the coil immersed in the paint stripper is intermittently extracted at a time interval of the secondary verification period until the paint stripping value is 1, and the extraction of the paint stripping value is stopped, and the data extracted in this operation is defined as the secondary verification data;

[0026] The initial data is extracted, and the last set of data of the initial data is replaced with the secondary verification data to generate the second data.

[0027] As a further solution of the present invention: in the process of generating the standard linear change graph, an mth paint stripping value extraction is provided, m is an integer and is greater than 1, and the mth paint stripping value extraction is set based on the (m-1)th paint stripping value extraction process, and through the mth paint stripping value extraction, m verification data are generated and the last set of data of the (m-1)th data is replaced by the (m-1)th verification data.

[0028] As a further solution of the present invention: in the process of generating the standard linear change diagram, the length and diameter of the coil adopt the standard length L and the standard diameter Φ.

[0029] As a further solution of the present invention: in the process of matching the basic data information of the paint stripping treatment with the sample database, the matching is performed based on the composition of the insulating paint layer of the coil, the type and concentration of the paint stripper, and a standard linear change graph that is the same as the insulating paint layer of the coil, the type and concentration of the paint stripper in the paint stripping treatment is retrieved from the sample database, and the time required to complete the paint stripping treatment is obtained through the standard linear change graph.

[0030] As a further solution of the present invention: before matching the basic data information of the paint stripping process with the sample database, data preprocessing is also included, and the data preprocessing specifically includes:

[0031] Extracting the coil length L1 and coil diameter Φ1 from the basic data information of the paint stripping process;

[0032] By formula: K = [π(Φ1 / 2) 2 L1] / [π(Φ / 2) 2 L], calculate the conversion ratio K;

[0033] The paint stripping agent concentration C is extracted from the basic data information of the paint stripping treatment, and the paint stripping agent conversion concentration C1 is calculated by C1=KC. The paint stripping treatment is equivalent to a coil of standard length L and standard diameter Φ being immersed in a paint stripping agent with a concentration of C1.

[0034] As a further solution of the present invention: after data preprocessing, the basic data information of the paint stripping treatment is retrieved from the sample database through the insulating paint layer composition and the conversion concentration C1 of the paint stripping agent to obtain a standard linear change diagram matching it, thereby obtaining the time required to complete the paint stripping treatment.

[0035] The beneficial effects of the present invention are as follows: by setting the detection method in advance, the paint stripping value of the coil immersed in different types and concentrations under standard conditions (standard length L and standard diameter Φ) is measured, and the collected paint stripping value is processed. The paint stripping value here is discrete data. By applying the linear regression equation and the least squares method, the fitting characteristics of the discrete data are obtained, and according to the fitting characteristics of the measured paint stripping value, the time required for the coil to complete the paint stripping is more accurately predicted and a standard linear change diagram is generated, thereby obtaining the sample database; in the subsequent paint stripping process, it is only necessary to pre-process the coil data to be detected into a coil under standard conditions, and the corresponding standard linear change diagram can be obtained from the sample database, thereby completing the prediction of the time for the coil to complete the paint stripping process. Therefore, as long as the coil is immersed in the paint stripper, the paint stripping can be completed after the predicted time, which can avoid the problem of verifying whether the paint stripping process is completed by visual inspection or manual peeling of the paint, which is harmful to the staff, and can also avoid the problem of long-term immersion in the paint stripper to achieve the paint stripping process, which affects the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The present invention will be further described below in conjunction with the accompanying drawings.

[0037] Figure 1 It is a schematic flow chart of a coil stripping and tinning control method provided by the present invention;

[0038] Figure 2 It is a schematic diagram of a flow chart for generating a standard linear change graph provided in a preferred embodiment of the present invention;

[0039] Figure 3 It is a schematic diagram of the second paint stripping value extraction process provided in another preferred embodiment of the present invention. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not 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.

[0041] See also Figure 1 As shown, the present invention is a coil stripping and tinning control method, comprising the following steps:

[0042] Step S100, obtaining basic data information of paint stripping treatment, wherein the basic data information includes coil length, composition of insulating paint layer, coil diameter, type and concentration of paint stripper;

[0043] Step S200, establishing a sample database, wherein the sample database stores standard linear variation diagrams of paint stripping values ​​of different types of coils immersed in different paint strippers versus paint stripping time, wherein the paint stripping value is the integrity of the insulating paint layer of the coil, the paint stripping value of a completely paint stripped coil is 1, and the paint stripping value of a coil that has not yet started to be paint stripped is 0;

[0044] Step S300, matching the basic data information of the paint stripping process with the sample database, and extracting a standard linear change graph corresponding to the basic data information;

[0045] Step S400, predicting the value of the paint stripping time when the paint stripping value is 1 through the standard linear change diagram.

[0046] like Figure 2 As shown, in a preferred embodiment of the present invention, generating the standard linear change graph specifically includes the following steps:

[0047] Step S201, obtaining the composition of the insulating paint layer of the coil;

[0048] Step S202, obtaining the type and concentration of the paint stripper;

[0049] Step S203, extracting the paint stripping value of the coil after the coil is immersed in the paint stripper for different time periods;

[0050] Step S204, establish a univariate linear regression equation:

[0051] y=ax+b, where y is the paint stripping value and x is the paint stripping time;

[0052] Step S205, obtaining the parameters a and b of the univariate linear regression equation by the least square method;

[0053] Step S206, establishing a coordinate system, using the paint stripping value and the paint stripping time as the ordinate and abscissa respectively, to draw an image of the univariate linear regression equation, wherein the image of the univariate linear regression equation is defined as a standard linear change graph.

[0054] In this embodiment, in the process of generating a standard linear change graph, the paint stripping value is extracted by intermittent extraction. By setting an extraction cycle, the paint stripping value of the coil immersed in the paint stripper is intermittently extracted with the extraction cycle as the time interval. When the paint stripping value is 1, the extraction of the paint stripping value is stopped. The process of extracting the paint stripping value this time is defined as the first paint stripping value extraction, and the extracted data is defined as the initial data.

[0055] like Figure 3 As shown, in another preferred embodiment of the present invention, in order to ensure the accuracy of data extraction, a second paint stripping value extraction is also provided in the process of generating the standard linear change graph, and the second paint stripping value extraction is set based on the first paint stripping value extraction, and the specific steps are as follows:

[0056] Step S2031, extracting the paint stripping time value when the paint stripping value is 1 in the first paint stripping value extraction;

[0057] Step S2032, subtracting the extraction period from the paint stripping time value to generate a verification time value;

[0058] Step S2033, setting a secondary verification period, wherein the secondary verification period is n times the extraction period, n∈(0,1);

[0059] Step S2034, immersing the coil in the paint stripper until the verification time value is reached, intermittently extracting the paint stripping value of the coil immersed in the paint stripper at a time interval of the secondary verification period, until the paint stripping value is 1, stopping the extraction of the paint stripping value, and defining the data extracted in this operation as secondary verification data;

[0060] Step S2035, extracting the initial data, replacing the last set of data of the initial data with the secondary verification data, and generating the second data.

[0061] In another preferred embodiment of the present invention, in the process of generating the standard linear change graph, an mth paint stripping value extraction is provided, where m is an integer greater than 1, and the mth paint stripping value extraction is set based on the (m-1)th paint stripping value extraction process, and through the mth paint stripping value extraction, m verification data are generated and the last set of data of the (m-1)th data is replaced by the (m-1)th verification data.

[0062] It is understandable that if T is the extraction cycle in the first paint stripping value extraction process, then after the penultimate paint stripping value extraction, the time interval from the last extraction may not have reached T, and the paint stripping value is already 1 (that is, the paint stripping process is completed), but the system will still extract the paint stripping value at a fixed time interval T, resulting in a large error in the last set of data in the first paint stripping value extraction process. Therefore, by setting the second paint stripping value extraction, the extraction cycle is reduced to one tenth or even one twentieth of the original, so that the last set of data in the first paint stripping value extraction process is re-extracted at a smaller time interval, thereby improving the accuracy of the data; similarly, the third paint stripping value extraction can be set based on the second paint stripping value extraction, that is, the mth paint stripping value extraction is set based on the m-1th paint stripping value extraction.

[0063] It is worth noting that, in this embodiment, during the generation of the standard linear variation diagram, the length and diameter of the coil adopt the standard length L and the standard diameter Φ.

[0064] In one of the preferred embodiments of the present invention, in the process of matching the basic data information of the paint stripping treatment with the sample database, the matching is performed based on the composition of the insulating paint layer of the coil, the type and concentration of the paint stripper, and a standard linear change graph with the same type and concentration of the insulating paint layer, paint stripper of the coil in the paint stripping treatment is retrieved from the sample database, and the time required to complete the paint stripping treatment is obtained through the standard linear change graph.

[0065] In another preferred embodiment of the present invention, before matching the basic data information of the paint stripping process with the sample database, data preprocessing is also included, and the data preprocessing specifically includes:

[0066] Extracting the coil length L1 and coil diameter Φ1 from the basic data information of the paint stripping process;

[0067] By formula: K = [π(Φ1 / 2) 2 L1] / [π(Φ / 2) 2 L], calculate the conversion ratio K;

[0068] The paint stripping agent concentration C is extracted from the basic data information of the paint stripping treatment, and the paint stripping agent conversion concentration C1 is calculated by C1=KC. The paint stripping treatment is equivalent to a coil of standard length L and standard diameter Φ being immersed in a paint stripping agent with a concentration of C1.

[0069] It is worth noting that in this embodiment, after data preprocessing, the basic data information of the paint stripping treatment is retrieved from the sample database through the insulating paint layer composition and the conversion concentration C1 of the paint stripping agent to obtain a standard linear change diagram matching it, thereby obtaining the time required to complete the paint stripping treatment.

[0070] Here, for many actual situations, in formal production, it is difficult to do in the paint stripping process. Only the coils with standard length L and standard diameter Φ are stripped, and it is also difficult for the database to include standard linear change graphs of coils with different lengths and diameters. Therefore, the coil to be processed is converted into a coil with the same standard length and standard diameter through data preprocessing, so as to complete the matching of the standard linear change graph by converting the concentration C1 and the insulating paint layer group of the coil, thereby obtaining the time required for the paint stripping process.

[0071] The functions that can be achieved by the coil stripping and tinning control method are all completed by a computer device, and the computer device includes one or more processors and one or more memories, and at least one program code is stored in the one or more memories. The program code is loaded and executed by the one or more processors to achieve the functions of the coil stripping and tinning control method.

[0072] The processor takes out instructions from the memory one by one, analyzes the instructions, and then completes the corresponding operations according to the instruction requirements, generating a series of control commands, so that the various parts of the computer can automatically, continuously and coordinately move to become an organic whole, realize the input of programs, the input of data, and the calculation and output of results. The arithmetic operations or logical operations generated in this process are all completed by the operator; the memory includes a read-only memory (ROM), which is used to store computer programs, and a protection device is provided outside the memory.

[0073] Exemplarily, the computer program may be divided into one or more modules, one or more modules are stored in a memory and executed by a processor to implement the present invention. One or more modules may be a series of computer program instruction segments capable of implementing specific functions, and the instruction segments are used to describe the execution process of the computer program in a terminal device.

[0074] Those skilled in the art will understand that the description of the above service equipment is merely an example and does not constitute a limitation on the terminal equipment. It may include more or fewer components than described above, or a combination of certain components, or different components, for example, it may include input and output devices, network access devices, buses, etc.

[0075] The processor may be a central processing unit (CPU), other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor, etc. The processor is the control center of the terminal device, and uses various interfaces and lines to connect various parts of the entire user terminal.

[0076] The memory can be used to store computer programs and / or modules. The processor can realize various functions of the terminal device by running or executing the computer programs and / or modules stored in the memory and calling the data stored in the memory. The memory can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, an application required for at least one function (such as an information collection template display function, a product information release function, etc.); the data storage area can store data created according to the use of the berth status display system (such as product information collection templates corresponding to different product types, product information that different product providers need to release, etc.). In addition, the memory can include a high-speed random access memory, and can also include a non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), at least one disk storage device, a flash memory device or other volatile solid-state storage device.

[0077] If the module / unit integrated in the terminal device is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present invention implements all or part of the modules / units in the above-mentioned embodiment system, and can also be completed by instructing the relevant hardware through a computer program. The above-mentioned computer program can be stored in a computer-readable storage medium, and the computer program can realize the functions of the above-mentioned various system embodiments when executed by the processor. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. Computer-readable media may include: any entity or device capable of carrying computer program code, recording medium, U disk, mobile hard disk, disk, optical disk, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electrical carrier signal, telecommunication signal and software distribution medium, etc.

[0078] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A coil stripping and tinning control method, It is characterized in that The following steps are involved: Obtaining basic data information of paint stripping treatment, wherein the basic data information includes coil length, composition of insulating paint layer, coil diameter, type and concentration of paint stripper; Establishing a sample database, wherein the sample database stores standard linear variation diagrams of paint stripping values ​​of different types of coils immersed in different paint strippers versus paint stripping time, wherein the paint stripping value is the integrity of the insulating paint layer of the coil, the paint stripping value of a completely paint stripped coil is 1, and the paint stripping value of a coil that has not started to strip is 0; Matching the basic data information of the paint stripping process with the sample database, and extracting a standard linear change graph corresponding to the basic data information; The value of the paint stripping time when the paint stripping value is 1 is predicted by the standard linear change diagram.

2. A coil stripping and tinning control method according to claim 1, It is characterized in that Generating the standard linear variation graph specifically comprises the following steps: Obtaining the composition of the insulating paint layer of the coil; Obtain the type and concentration of paint stripper; Extracting the paint stripping value of the coil after the coil is immersed in the paint stripper for different time periods; Establish a univariate linear regression equation: y=ax+b, where y is the paint stripping value and x is the paint stripping time; The parameters a and b of the univariate linear regression equation are obtained by the least squares method; A coordinate system is established, and the image of the univariate linear regression equation is plotted with the paint stripping value and the paint stripping time as the ordinate and the abscissa, respectively. The image of the univariate linear regression equation is defined as a standard linear change graph.

3. A coil stripping and tinning control method according to claim 2, It is characterized in that In the process of generating the standard linear change graph, the paint stripping value is extracted by intermittent extraction. By setting the extraction cycle, the paint stripping value of the coil immersed in the paint stripper is intermittently extracted with the extraction cycle as the time interval. When the paint stripping value is 1, the extraction of the paint stripping value is stopped. The process of extracting the paint stripping value this time is defined as the first paint stripping value extraction, and the extracted data is defined as the initial data.

4. A coil stripping and tinning control method according to claim 3, It is characterized in that In the process of generating the standard linear change graph, a second paint stripping value extraction is also provided. The second paint stripping value extraction is set based on the first paint stripping value extraction. The specific steps are as follows: Extract the paint stripping time value when the paint stripping value is 1 in the first paint stripping value extraction; Subtract the extraction period from the paint stripping time value to generate a verification time value; Set a secondary verification period, where the secondary verification period is n times the extraction period, n∈(0,1); The coil is immersed in the paint stripper until the verification time value is reached, and the paint stripping value of the coil immersed in the paint stripper is intermittently extracted at a time interval of the secondary verification period until the paint stripping value is 1, and the extraction of the paint stripping value is stopped, and the data extracted in this operation is defined as the secondary verification data; The initial data is extracted, and the last set of data of the initial data is replaced with the secondary verification data to generate the second data.

5. A coil stripping and tinning control method according to claim 4, It is characterized in that In the process of generating the standard linear change graph, an mth paint stripping value extraction is set, where m is an integer and greater than 1. The mth paint stripping value extraction is set based on the (m-1)th paint stripping value extraction process. Through the mth paint stripping value extraction, m verification data is generated and the last set of data of the (m-1)th data is replaced by the (m-1)th verification data.

6. A coil stripping and tinning control method according to claim 2, It is characterized in that In the process of generating the standard linear variation diagram, the length and diameter of the coil adopt the standard length L and the standard diameter Φ.

7. A coil stripping and tinning control method according to claim 1, It is characterized in that In the process of matching the basic data information of the paint stripping treatment with the sample database, the matching is performed based on the composition of the insulating paint layer of the coil, the type and concentration of the paint stripper, and a standard linear change graph that is the same as the insulating paint layer of the coil, the type and concentration of the paint stripper in the paint stripping treatment is retrieved from the sample database, and the time required to complete the paint stripping treatment is obtained through the standard linear change graph.

8. A coil stripping and tinning control method according to claim 1, It is characterized in that Before matching the basic data information of the paint stripping process with the sample database, data preprocessing is also included, and the data preprocessing specifically includes: Extracting the coil length L1 and coil diameter Φ1 from the basic data information of the paint stripping process; By formula: K = [π(Φ1 / 2) 2 L1] / [π(Φ / 2) 2 L], calculate the conversion ratio K; The paint stripping agent concentration C is extracted from the basic data information of the paint stripping treatment, and the paint stripping agent conversion concentration C1 is calculated by C1=KC. The paint stripping treatment is equivalent to a coil of standard length L and standard diameter Φ being immersed in a paint stripping agent with a concentration of C1.

9. A coil stripping and tinning control method according to claim 8, It is characterized in that After data preprocessing, the basic data information of the paint stripping treatment is retrieved from the sample database through the insulating paint layer composition and the conversion concentration C1 of the paint stripping agent to obtain a standard linear change diagram matching it, thereby obtaining the time required to complete the paint stripping treatment.

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