Automatic bending and tin immersion equipment and method based on electromagnetic coil pins

Abstract

The invention discloses an automatic bending and tin immersion device and method based on electromagnetic coil pins, and the device comprises a loading turntable structure which is provided with a controllable rotary turntable surface and a plurality of groups of electromagnetic coil stations; the loading and unloading carrying structure is arranged corresponding to the loading turntable structure; the pin bending structure is used for outputting stamping kinetic energy to bend electromagnetic coil pins; the soldering-aid dipping structure comprises a soldering-aid shifting and transposition assembly and a soldering flux lifting assembly, the soldering-aid shifting and transposition assembly is provided with a transposition kinetic energy output end, and the soldering flux lifting assembly is provided with a soldering flux lifting end; the pin tin immersion structure comprises a tin immersion transfer assembly and a tin melting liquid storage assembly. And the impedance detection structure comprises an upper and lower limit alarm resistance meter and a test probe, and can be arranged corresponding to the plurality of groups of electromagnetic coil stations in a switchable manner. The problems that in the prior art, bending and tin immersion processes of electromagnetic coil pins generally depend on manual operation, so that the overall automation degree, the operation efficiency and the qualified rate are low, and the labor cost is high are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of electromagnetic valve component manufacturing, and in particular to an automatic bending and tinning device and method based on electromagnetic coil pins. Background Art

[0002] At present, the electromagnetic coil is an important component of the electromagnetic valve. Its working principle is to generate an electromagnetic field by applying a working voltage to the coil, so that the moving iron core of the electromagnetic valve can be attracted under the action of the magnetic field, thereby realizing the on-off control function of the guide path. As a power-carrying device, the input end of the coil usually needs to be connected by a wire soft connection or a pin terminal hard connection to realize the overall power supply of the electromagnetic valve.

[0003] In the prior art, for an electromagnetic coil using a coil frame with pre-installed pin terminals, after the coil frame is wound with the enameled wire winding, the starting and terminal ends of the enameled wire winding need to be further wound around the two pins of the coil frame respectively. At the same time, in combination with the overall appearance design requirements of the solenoid valve, the pins of the electromagnetic coil need to be bent 90°, and then the winding leads and the pins need to be soldered with tin.

[0004] Under the current conventional process, the bending process of the pins usually requires manual operation of presses, bending molds and other equipment, while the welding process of the pins also requires manual operation of tinning equipment, etc., in order to complete the workload of a shift. The overall operating efficiency is low and the labor cost is relatively high. At the same time, due to batch production, the operating time of operators is long, and there are factors such as easy personnel changes, which makes it difficult to avoid human errors in the operation of the above-mentioned processes, which easily leads to disadvantages such as the outflow of defective products. Summary of the invention

[0005] To this end, the present invention provides an automatic bending and tinning equipment and method based on electromagnetic coil pins to solve the technical problems in the prior art that the bending and tinning processes of the electromagnetic coil pins generally rely on manual operation, resulting in low overall automation, operation efficiency and qualified rate, and high labor costs.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] An automatic bending and tinning device based on electromagnetic coil pins, comprising:

[0008] Positioning abutment structures;

[0009] A loading turntable structure is mounted on the positioning base structure, and the loading turntable structure is provided with a controllable rotatable turntable surface, and the controllable rotatable turntable surface is provided with a plurality of groups of electromagnetic coil stations;

[0010] A loading and unloading material handling structure is assembled on the positioning base structure, and the loading and unloading material handling structure is respectively arranged correspondingly between the loading end and the unloading end of the loading turntable structure;

[0011] A pin bending structure is assembled on the positioning base structure, and the pin bending structure includes a bending stamping assembly, the bending stamping assembly is sequentially arranged corresponding to a plurality of groups of electromagnetic coil stations of the loading turntable structure, and the bending stamping assembly can output stamping kinetic energy to bend the electromagnetic coil pin;

[0012] A soldering solder dipping structure is mounted on the positioning base structure, and the soldering solder dipping structure includes a soldering soldering transfer assembly and a soldering solder flux lifting assembly, wherein the soldering soldering transfer assembly is provided with at least one transfer kinetic energy output end for driving the pin bending electromagnetic coil, and the soldering solder flux lifting assembly is provided with at least one soldering solder flux lifting end, and the transfer kinetic energy output end of the soldering soldering transfer assembly drives the soldering ...

[0013] The pin tinning structure is assembled on the positioning base structure, and the pin tinning structure includes a tinning transfer component and a molten tin storage component, the tinning transfer component is provided with at least one transfer kinetic energy output end for driving the pin soldering electromagnetic coil, and the transfer kinetic energy output end of the tinning transfer component drives the electromagnetic coil pin and the molten tin storage component to be arranged in an adaptive height-adjusting correspondence;

[0014] An impedance detection structure is assembled on the positioning base structure, and the impedance detection structure includes an upper and lower limit alarm resistor and a horizontally shiftable test probe connected to the upper and lower limit alarm resistor through a circuit. The upper and lower limit alarm resistor is switchably corresponding to a plurality of groups of electromagnetic coil stations arranged on the loading turntable structure through the horizontally shiftable test probe.

[0015] On the basis of the above technical solution, the present invention is further described as follows:

[0016] As a further embodiment of the present invention,

[0017] The loading turntable structure includes a driving turntable assembly and a positioning loading seat body;

[0018] The base portion of the driving turntable assembly is fixedly mounted on the top surface of the positioning base structure, and the driving turntable assembly has a controllable rotatable turntable surface;

[0019] The positioning and loading seat bodies are provided in a plurality of groups, and the plurality of positioning and loading seat bodies are arranged as electromagnetic coil stations in a circular array on the top of the outer edge of the turntable surface of the driving turntable assembly;

[0020] The loading and unloading material handling structure comprises a loading material handling structure and a unloading material handling structure;

[0021] The material loading and handling structure comprises a material loading conveyor belt assembly and a material loading and transferring assembly respectively fixedly connected to the top surface of the positioning base structure;

[0022] The feeding conveyor belt assembly is used for directional arrangement and conveying of a plurality of groups of electromagnetic coils;

[0023] The material loading and transferring components are respectively provided with a material laser detection component and a displaceable material loading and extracting end portion, through which the material laser detection component detects in real time the positions of several groups of electromagnetic coils located on the material loading conveyor belt component, and at the same time, the electromagnetic coils transported to the position by the material loading and transferring components are further extracted and shifted to one of the groups of positioning and loading seats through the extracting end portion of the material loading and transferring components;

[0024] The extraction end of the loading and transferring assembly can be linearly displaced and positioned between a downstream end of the loading conveyor assembly and one of the positioning and loading seats;

[0025] The material unloading and handling structure includes a material unloading and transfer assembly, a material unloading conveyor belt assembly and an NG material unloading assembly;

[0026] The base of the material unloading and transferring assembly, the base of the material unloading conveyor assembly and the base of the NG material unloading assembly are respectively fixedly connected to the top end surface of the positioning base structure, and the material unloading and transferring assembly is provided with a displaceable material unloading and extracting end portion, and the extracting end portion of the material unloading and transferring assembly can be linearly displaced and correspondingly located between one set of the positioning and loading seat bodies and one end of the material unloading conveyor assembly;

[0027] The NG material unloading component corresponds to a linear displacement path located at the extraction end of the material unloading and transferring component.

[0028] As a further embodiment of the present invention,

[0029] The pin bending structure also includes a basic frame body, a coil pressing assembly and a pin bottom support assembly;

[0030] The basic frame body and the base part of the pin bottom support assembly are respectively fixedly assembled on the top surface of the positioning base structure, and the base part of the coil pressing assembly and the base part of the bending and stamping assembly are respectively fixedly assembled on the basic frame body;

[0031] The coil pressing assembly is configured as a coil pressing cylinder, the kinetic energy output end of the coil pressing cylinder is vertically correspondingly arranged above the circular trajectory of the plurality of groups of positioning and loading seats, and the coil pressing cylinder is used to press and position the electromagnetic coil corresponding to the positioning and loading seat;

[0032] The pin bottom support assembly comprises a pin bottom support cylinder, a bottom support guide groove and a bottom support pad;

[0033] The bottom support guide groove member is fixedly mounted on the basic frame body;

[0034] The base of the pin bottom support cylinder is fixedly assembled on the top surface of the positioning base structure, and the kinetic energy output end of the pin bottom support cylinder is slidably arranged in the internal through groove of the bottom support guide groove member, and the kinetic energy output end of the pin bottom support cylinder is fixedly assembled with a bottom support pad, and the bottom support pad is vertically arranged at a position below the outer periphery of the circular trajectory of the positioning loading seat bodies of the plurality of groups, and the pin bottom support cylinder can output linear kinetic energy to drive the bottom support pad to touch the outer pin of the coil upward;

[0035] The bending and punching assembly comprises a bending and punching cylinder, a punching guide groove and a punching head;

[0036] The base of the bending stamping cylinder and the stamping guide groove are respectively fixedly assembled on the basic frame body, and the kinetic energy output end of the bending stamping cylinder is slidably arranged in the internal through groove of the stamping guide groove, and the kinetic energy output end of the bending stamping cylinder is fixedly assembled with a stamping head, and the stamping head is vertically arranged at the upper outer position of the kinetic energy output end of the pin bottom support cylinder, and the bending stamping cylinder outputs linear kinetic energy to drive the stamping head to stamp the outer pin of the coil downward to bend and form;

[0037] When the bottom support pad and the punch head both reach a predetermined bending position, a bending gap corresponding to the thickness of the pin is provided on the opposite side between the bottom support pad and the punch head.

[0038] As a further embodiment of the present invention,

[0039] The soldering transfer assembly comprises a soldering translation cylinder, a first soldering lifting cylinder, a soldering transfer motor and a soldering pneumatic clamp;

[0040] The base of the welding translation cylinder is fixedly mounted on the top surface of the positioning base structure, and the kinetic energy output end of the welding translation cylinder is arranged in the horizontal direction;

[0041] The base of the first welding lifting cylinder is connected to the kinetic energy output end of the welding translation cylinder by transmission fixed connection, and the kinetic energy output end of the first welding lifting cylinder is arranged vertically;

[0042] The base of the soldering indexing motor is connected to the kinetic energy output end of the first soldering lifting cylinder by transmission and fixed connection, and the kinetic energy output end of the soldering indexing motor is connected to the base of the soldering pneumatic clamp by transmission and fixed connection;

[0043] The soldering flux lifting assembly includes a soldering flux storage tank, a second soldering flux lifting cylinder, a soldering flux lifting trough frame and a liquid level detection assembly;

[0044] The bases of the flux storage tank and the second flux lifting cylinder are respectively fixedly mounted on the top surface of the positioning base structure; one end of the flux lifting trough frame is transmission-fixedly connected to the kinetic energy output end of the second flux lifting cylinder, and the other end of the flux lifting trough frame is provided with a flux trough body, and the flux trough body extends and is located inside the flux storage tank;

[0045] When the bent pin of the electromagnetic coil vertically corresponds to the flux lifting component, the flux tank body of the flux lifting tank frame is vertically arranged corresponding to the bent pin of the electromagnetic coil;

[0046] The liquid level detection assembly includes a liquid level display transparent tube and a photoelectric sensing switch fixed to the liquid level display transparent tube;

[0047] The transparent tube of the liquid level display is connected and fixedly arranged on the outer side of the flux storage tank, and the liquid level detection component monitors the liquid level height of the flux inside the flux storage tank in real time.

[0048] As a further embodiment of the present invention,

[0049] The tin immersion transfer assembly includes a tin immersion translation cylinder, a tin immersion lifting cylinder, a tin immersion transfer motor and a tin immersion pneumatic clamp;

[0050] The base of the tin-immersion translation cylinder is fixedly mounted on the top surface of the positioning base structure, and the kinetic energy output end of the tin-immersion translation cylinder is arranged in the horizontal direction;

[0051] The base of the tin-immersion lifting cylinder is connected to the linear kinetic energy output end of the tin-immersion translation cylinder by transmission and fixed connection, and the kinetic energy output end of the tin-immersion lifting cylinder is arranged vertically;

[0052] The base of the tin-immersion indexing motor is connected to the linear kinetic energy output end of the tin-immersion lifting cylinder by transmission and fixed connection, and the rotational kinetic energy output end of the tin-immersion indexing motor is connected to the base of the tin-immersion pneumatic clamp by transmission and fixed connection;

[0053] The molten tin liquid storage assembly comprises a molten tin furnace and a tin dipping slot opened on the top surface of the molten tin furnace;

[0054] The tin-immersion pneumatic clamp drives the electromagnetic coil pins to be arranged in an adjustable height corresponding to the tin-immersion notch.

[0055] As a further embodiment of the present invention,

[0056] The pin tinning structure also includes a tin liquid scraping assembly, which includes a scraping layer translation cylinder, a directional guide rail slide, a scraping layer lifting cylinder and an extension scraper;

[0057] The base of the scraping layer translation cylinder and the directional guide rail slide are respectively fixedly mounted horizontally on the top surface of the positioning base structure, and the kinetic energy output end of the scraping layer translation cylinder is connected to the directional guide rail slide by a transmission assembly;

[0058] The base of the scraping layer lifting cylinder is vertically fixed to the sliding output end of the directional guide rail slide, and the kinetic energy output end of the scraping layer lifting cylinder is transmission-fixedly connected to one end of the extended scraper, and the other end of the extended scraper can be detachably extended to the inside of the molten tin liquid storage assembly.

[0059] As a further embodiment of the present invention,

[0060] The tin immersion transfer assembly also includes a laser distance measurement assembly;

[0061] The base of the laser ranging component is elevated and fixedly assembled on the top surface of the positioning base structure, and the detection end of the laser ranging component is vertically located above the tin dipping slot. The laser ranging component monitors the height of the molten tin liquid level inside the tin melting furnace from the tin dipping slot in real time. When the height of the molten tin liquid level decreases due to solder consumption, the laser ranging component sends the liquid level information to the intelligent lifting module in real time. The intelligent lifting module adjusts the lifting height of the tin dipping lifting cylinder in real time to perform an automatic adjustment and compensation function for the descending height, so that the coil pins are immersed in the tin liquid to the same depth.

[0062] As a further embodiment of the present invention,

[0063] The impedance detection structure also includes a horizontal telescopic cylinder;

[0064] The base of the horizontal telescopic cylinder is raised and fixedly connected to the top surface of the positioning base structure, and the linear kinetic energy output end of the horizontal telescopic cylinder is fixedly assembled and connected to the upper and lower limit alarm resistors. The upper and lower limit alarm resistors have two test probes, and the two test probes of the upper and lower limit alarm resistors are switchably arranged to correspond to the two bent pins of one group of electromagnetic coils. The test probes are extended and driven by the horizontal telescopic cylinder to contact the bent pins of the electromagnetic coils, and the upper and lower limit alarm resistors complete the automatic detection of the impedance power-on of the electromagnetic coils.

[0065] As a further solution of the present invention, it also includes:

[0066] The electric control structure is respectively connected with the intelligent lifting module, the loading and transporting structure, the loading turntable structure, the pin bending structure, the flux dipping structure, the pin tinning structure, the impedance detection structure and the unloading and transporting structure through circuits.

[0067] An automatic bending and tinning method according to the automatic bending and tinning equipment based on electromagnetic coil pins specifically comprises the following steps:

[0068] The electromagnetic coil to be operated is installed to the feeding conveyor assembly in the feeding and handling structure with the pins facing outwards, and the start button is pressed to start the feeding conveyor assembly. After the material laser detection assembly detects the existence of the electromagnetic coil in the feeding conveyor assembly, the feeding transfer assembly extracts the electromagnetic coil and transports it to the positioning loading seat body of the loading turntable structure; then the feeding conveyor assembly runs again to transfer the electromagnetic coil to the feeding waiting position, and repeats the cycle in sequence until the material laser detection assembly cannot detect the coil corresponding to the feeding conveyor assembly, then the feeding conveyor assembly stops running and waits for the electromagnetic coil to be placed on the feeding conveyor assembly again; at this time, several groups of electromagnetic coils are respectively placed one by one on several groups of positioning loading seats, and the pins of several groups of electromagnetic coils are kept facing outwards;

[0069] A plurality of groups of electromagnetic coil pins are sequentially transferred to the corresponding pin bending structures for the bending process. After the electromagnetic coil to be bent is rotated into position by the driving turntable assembly, the coil body is firstly pressed and fixed by the coil clamping assembly in the pin bending structure. Then, the pin bottom support cylinder in the pin bottom support assembly drives the bottom support pad upward, and makes the bottom support pad contact upward against the coil pin. Then, the bending punch head is driven downward by the bending punch cylinder in the bending punch assembly, and the punch head contacts the electromagnetic coil pin, and makes the electromagnetic coil pin bend downward into shape. After the electromagnetic coil pin is bent into shape, the components of the pin bending structure are sequentially withdrawn under the control of the electric control structure, and the electromagnetic coil retained in the loading turntable structure completes the pin bending process.

[0070] The plurality of groups of electromagnetic coil pins that have completed the bending process are sequentially transferred to the corresponding positions of the flux dipping structure for the fluxing process. After the electromagnetic coil for fluxing is rotated into position by the driving turntable assembly, the fluxing transfer assembly in the flux dipping structure first drives the fluxing pneumatic clamp downward via the first fluxing lifting cylinder, and the fluxing pneumatic clamp grabs the electromagnetic coil that has completed the bending process on the workstation, and lifts the electromagnetic coil upward via the first fluxing lifting cylinder; then the fluxing transfer assembly further drives the fluxing pneumatic clamp and its grasping electromagnetic coil to shift to the top of the flux lifting assembly via the flux translation cylinder; then the fluxing transfer assembly drives the fluxing pneumatic clamp to rotate via the flux transfer motor, and the fluxing part of the electromagnetic coil pin is downward, thus completing the fluxing positioning of the electromagnetic coil pin;

[0071] In a static state, the flux liquid level in the flux storage tank is higher than the upper end of the receiving opening of the flux lifting trough frame, thereby ensuring that each time the flux lifting trough frame is lifted, the built-in flux is in a full trough state, ensuring that the height of the electromagnetic coil pins dipped in the flux is consistent; further, the second flux lifting cylinder in the flux lifting assembly drives the flux lifting trough frame and its built-in flux to rise to the position of the electromagnetic coil pins, until the electromagnetic coil pins that need to be tinned are dipped into the flux in the flux lifting trough frame at a specific height;

[0072] Continue to control the second flux lifting cylinder to drive the flux lifting slot frame down to the original position, and the flux shifting assembly drives the flux pneumatic clamping claw to shift and shift respectively, and then put the electromagnetic coil back to the loading turntable structure, so as to complete the flux dipping process of the electromagnetic coil pin;

[0073] The flux lifting component has a liquid level detection function. When the liquid level detection component detects that the liquid level in the flux storage tank is lower than the set value, the built-in photoelectric switch of the liquid level detection component cannot sense the liquid level, and its indicator light will light up, and then the command signal will be output. After the system receives the command signal, it will stop working, and the external touch screen will prompt that the flux liquid level is low and liquid needs to be replenished. When the photoelectric switch recognizes that the liquid replenishment is completed, the indicator light will go out, the output signal disappears, and the system can resume work after resetting;

[0074] The plurality of groups of electromagnetic coil pins that have completed the soldering process are sequentially transferred to the corresponding pin tinning structures for the tinning process. After the tinned electromagnetic coil is rotated into position by the driving turntable assembly, the tinning transfer assembly in the pin tinning structure first drives the tinning pneumatic clamp downward via the tinning lifting cylinder, and the tinning pneumatic clamp grabs the electromagnetic coil that has completed the soldering process on the workstation, and lifts the electromagnetic coil upward via the tinning lifting cylinder; then the tinning transfer assembly drives the tinning pneumatic clamp and its grabbing electromagnetic coil to shift to the top of the molten tin storage assembly via the tinning translation cylinder; then the tinning transfer assembly drives the tinning pneumatic clamp to rotate via the tinning transfer motor, and the tinning part of the electromagnetic coil pin is downward, completing the tinning positioning of the electromagnetic coil pin;

[0075] At the same time, the molten tin liquid surface scum scraping and cleaning process is performed by the tin liquid scraping component corresponding to the molten tin liquid storage component, specifically: the scraping layer translation cylinder in the tin liquid scraping component is controlled to push the extension scraper to one end of the molten tin liquid storage component, and then the scraping layer lifting cylinder in the tin liquid scraping component is used to lower the extension scraper to the tin liquid surface, and then the scraping layer translation cylinder is controlled to retract the extension scraper to the other end of the molten tin liquid storage component to clean the scum on the liquid surface, and then the scraping layer lifting cylinder is raised to move the extension scraper away from the tin liquid surface, thereby completing one liquid surface cleaning;

[0076] The electric control structure further controls the tin-immersion lifting cylinder to drive the tin-immersion pneumatic clamp and the end of the electromagnetic coil pin grasped by it to move downward. The downward movement of the end of the electromagnetic coil pin has an automatic adjustment and compensation function for the descending height, that is, when the height of the tin liquid plane slowly decreases due to the consumption of tin immersion, the laser ranging component feeds back the height of the tin liquid plane in real time to the electric control structure. The electric control structure controls the descending height of the tin-immersion lifting cylinder after calculation to ensure that the electromagnetic coil pin is immersed in the tin liquid at a consistent depth, thereby ensuring the consistency of the tin immersion quality, thereby inserting the end of the electromagnetic coil pin downward into the internal tin liquid surface of the molten tin storage component, so that the electromagnetic coil pin completes the tin immersion process of a predetermined height; wherein the laser ranging component is set with a standard liquid level height value and a maximum liquid level drop parameter. When it is detected that the liquid level drops by more than the set maximum value, the whole system alarms and prompts, and stops working until the specific tin liquid is refilled, and then the tin immersion work can be unlocked again;

[0077] The pins of several groups of electromagnetic coils that have completed the tinning process are sequentially transferred to the corresponding impedance detection structures for the impedance detection process. After the electromagnetic coil to be detected is rotated into place by the driving turntable assembly, the horizontal telescopic cylinder in the impedance detection structure first drives the test probe to extend and contact the electromagnetic coil pins. The electric control structure detects the coil impedance through the upper and lower limit alarm resistor meter. When the measured impedance is within the required range, the upper and lower limit alarm resistor meter does not alarm, and the system does not receive the alarm signal within the specified time, that is, it is assumed that the impedance of the coil at this station is qualified and recorded. When the impedance is not within the required range, the upper and lower limit alarm resistor meter will output an alarm, and the system will receive a non-qualified signal and record the non-qualified.

[0078] According to the system's judgment results, the unloading and handling structure transports the NG products in the inspected electromagnetic coils to the corresponding NG collection container through the unloading and transferring component, and transports the qualified products to the unloading conveyor belt component, and then conducts a tin immersion appearance inspection after transportation and stacks them on the turnover plate.

[0079] The present invention has the following beneficial effects:

[0080] The device and method can realize the automatic loading and unloading functions of the coil by cooperating with the loading and unloading transport structure and effectively corresponding to the loading turntable structure. At the same time, the pin bending structure, the flux dipping structure, the pin tinning structure and the impedance detection structure can respectively cooperate with the intermittent rotation and displacement action of the loading turntable structure to realize the automatic bending, flux dipping, adaptive height adjustment tinning and impedance detection processes for the coil pins in sequence, thereby significantly improving the overall degree of automation and operating efficiency, reducing labor costs and product unqualified rates, and effectively improving the overall functional adaptability and practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0081] In order to more clearly illustrate the implementation mode of the present invention or the technical solution in the prior art, the drawings required for the implementation mode or the description of the prior art will be briefly introduced below. The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0082] Figure 1 A schematic diagram of the overall axonometric structure of an automatic bending and tinning equipment based on electromagnetic coil pins provided in an embodiment of the present invention.

[0083] Figure 2 A schematic diagram of the assembly structure of a loading and handling structure in an automatic bending and tinning equipment based on electromagnetic coil pins provided in an embodiment of the present invention.

[0084] Figure 3 A schematic diagram of the assembly structure of a loading turntable structure in an automatic bending and tinning equipment based on electromagnetic coil pins provided in an embodiment of the present invention.

[0085] Figure 4 The automatic bending and tinning equipment based on the electromagnetic coil pin provided by the embodiment of the present invention is Figure 3 Schematic diagram of the assembly structure corresponding to the pin bending structure at A.

[0086] Figure 5 A schematic diagram of the assembly structure of a flux dipping structure in an automatic bending tinning device based on electromagnetic coil pins provided in an embodiment of the present invention.

[0087] Figure 6 A schematic diagram of the assembly structure of a flux lifting component in a flux dipping structure of an automatic bending tinning device based on electromagnetic coil pins provided in an embodiment of the present invention.

[0088] Figure 7A schematic diagram of the assembly structure of the pin tinning structure in the automatic bending and tinning equipment based on the electromagnetic coil pins provided in an embodiment of the present invention.

[0089] Figure 8 A schematic diagram of the assembly structure of a tin liquid scraping component in a pin tinning structure of an automatic bending tinning device based on electromagnetic coil pins provided in an embodiment of the present invention.

[0090] Fig. 9 A schematic diagram of the assembly structure of an impedance detection structure in an automatic bending and tinning equipment based on electromagnetic coil pins provided in an embodiment of the present invention.

[0091] Fig.10 The automatic bending and tinning equipment based on the electromagnetic coil pin provided by the embodiment of the present invention is Fig. 9 Schematic diagram of the assembly structure of the impedance detection structure at B.

[0092] Fig.11 A schematic diagram of the assembly structure of a material unloading and handling structure in an automatic bending and tinning equipment based on electromagnetic coil pins provided in an embodiment of the present invention.

[0093] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0094] Positioning abutment structure 1;

[0095] Material loading and handling structure 2: material loading conveyor belt assembly 21, material loading and transfer assembly 22, material laser detection assembly 23;

[0096] Loading turntable structure 3: driving turntable assembly 31, positioning loading seat body 32;

[0097] Pin bending structure 4: basic frame body 41, coil pressing assembly 42, coil pressing cylinder 421, pin bottom support assembly 43, pin bottom support cylinder 431, bottom support guide groove member 432, bottom support pad 433, bending stamping assembly 44, bending stamping cylinder 441, stamping guide groove member 442, stamping head 443;

[0098] The soldering flux dipping structure 5 includes a soldering flux shifting assembly 51, a soldering flux translation cylinder 511, a first soldering flux lifting cylinder 512, a soldering flux shifting motor 513, a soldering flux pneumatic clamp 514, a soldering flux lifting assembly 52, a soldering flux storage tank 521, a second soldering flux lifting cylinder 522, a soldering flux lifting trough frame 523, and a liquid level detection assembly 524;

[0099] Pin tinning structure 6: tinning transfer assembly 61, tinning translation cylinder 611, tinning lifting cylinder 612, tinning indexing motor 613, tinning pneumatic clamp 614, laser ranging assembly 615, tin liquid scraping assembly 62, scraping layer translation cylinder 621, directional guide rail slide 622, scraping layer lifting cylinder 623, extension scraper 624, molten tin storage assembly 63, molten tin furnace 631, tinning notch 632;

[0100] Impedance detection structure 7: horizontal telescopic cylinder 71, upper and lower limit alarm resistor 72, test probe 73;

[0101] Unloading and handling structure 8: unloading and transferring assembly 81, unloading conveyor assembly 82, NG unloading assembly 83;

[0102] Electronic control structure 9. DETAILED DESCRIPTION

[0103] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are 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.

[0104] The terms such as "upper", "lower", "left", "right", and "middle" used in this specification are only for the convenience of description and are not intended to limit the scope of the invention. Changes or adjustments to their relative relationships should be regarded as within the scope of the invention without substantially changing the technical content.

[0105] like Figures 1 to 11 As shown, an embodiment of the present invention provides an automatic bending and tinning equipment based on electromagnetic coil pins, including a positioning base structure 1 and a loading and handling structure 2, a loading turntable structure 3, a pin bending structure 4, a flux dipping structure 5, a pin tinning structure 6, an impedance detection structure 7, a material unloading and handling structure 8 and an electric control structure 9 respectively assembled on the positioning base structure 1, so as to realize the automatic loading and unloading function of the coil by cooperating with the loading and handling structure 2 and the unloading and handling structure 8 to effectively correspond to the loading turntable structure 3, and at the same time, the pin bending structure 4, the flux dipping structure 5, the pin tinning structure 6 and the impedance detection structure 7 can respectively cooperate with the intermittent rotation and displacement action of the loading turntable structure 3 to realize the automatic bending, flux dipping, adaptive height adjustment tinning and impedance detection processes for the coil pins in sequence, thereby significantly improving the overall automation and operation efficiency, reducing labor costs and product unqualified rates, and effectively improving the overall functional adaptability and practicality. The specific settings are as follows:

[0106] Please refer to Figure 1 to Figure 2 The positioning base structure 1 is used as the assembly basis of the overall equipment; the loading and handling structure 2 includes a loading conveyor belt assembly 21 and a loading and transferring assembly 22 respectively fixedly connected to the top surface of the positioning base structure 1; wherein, the loading conveyor belt assembly 21 is used for directional arrangement and conveying of a plurality of groups of electromagnetic coils; the loading and transferring assembly 22 is respectively provided with a material laser detection assembly 23 and a displaceable loading and extraction end, which is used to detect the positions of a plurality of groups of electromagnetic coils located in the loading conveyor belt assembly 21 in real time through the material laser detection assembly 23, and then judge whether a plurality of groups of electromagnetic coils are delivered in place or delivered, and at the same time, the extraction end of the loading and transferring assembly 22 can be used to further extract and shift the electromagnetic coils delivered in place by the loading conveyor belt assembly 21 to the loading turntable structure 3.

[0107] Please refer to Figure 3 The loading turntable structure 3 includes a driving turntable assembly 31 and a positioning loading seat body 32; wherein the base of the driving turntable assembly 31 is fixedly assembled on the top surface of the positioning base structure 1, and the driving turntable assembly 31 has a controllable rotatable turntable surface; the positioning loading seat body 32 is provided with a plurality of groups, and the plurality of groups of the positioning loading seat bodies 32 are arranged in a circular array on the top of the outer edge of the turntable surface of the driving turntable assembly 31; the extraction end of the loading and transferring assembly 22 can be linearly displaced between a downstream end of the loading conveyor belt assembly 21 and one of the groups of the positioning loading seat bodies 32, so as to shift the plurality of groups of electromagnetic coils one by one to the plurality of groups of positioning loading seat bodies 32 in sequence through the loading and transferring assembly 22, so that the plurality of groups of electromagnetic coils can be synchronously displaced based on the rotation of the turntable.

[0108] In an optional implementation scheme, the positioning and loading seat body 32 has a vertical limit column and a corresponding retaining edge protrusion located on the outer side of the vertical limit column, so as to achieve stable limiting of the electromagnetic coil. At the same time, the electromagnetic coil can be easily extracted with the help of the vertical limit column, thereby completing the soldering and tinning process.

[0109] Please refer to Figure 3 and Figure 4The pin bending structure 4 includes a basic frame body 41, a coil clamping assembly 42, a pin bottom support assembly 43 and a bending stamping assembly 44; wherein, the basic frame body 41 and the base parts of the pin bottom support assembly 43 are respectively fixedly assembled on the top surface of the positioning base structure 1; the base part of the coil clamping assembly 42 and the base part of the bending stamping assembly 44 are respectively fixedly assembled on the basic frame body 41, and the coil clamping assembly 42 is configured as a coil clamping cylinder 421, and the kinetic energy output end of the coil clamping cylinder 421 is vertically corresponding to the upper position of the circular trajectory of several groups of the positioning loading seat bodies 32, so as to compress and position the electromagnetic coil corresponding to the positioning loading seat body 32 through the coil clamping cylinder 421, thereby ensuring the stability of the bending process of the outer pins of the coil.

[0110] The pin bottom support assembly 43 includes a pin bottom support cylinder 431, a bottom support guide groove member 432 and a bottom support pad 433; wherein the bottom support guide groove member 432 is fixedly assembled on the basic frame body 41; the base portion of the pin bottom support cylinder 431 is fixedly assembled on the top surface of the positioning base structure 1, and the kinetic energy output end of the pin bottom support cylinder 431 is slidably arranged in the internal through groove of the bottom support guide groove member 432, and the kinetic energy output end of the pin bottom support cylinder 431 is vertically corresponding to the outer lower position of the circular trajectory of several groups of the positioning loading seat bodies 32; the bottom support pad 433 is fixedly assembled on the kinetic energy output end of the pin bottom support cylinder 431; it is used to utilize the pin bottom support cylinder 431 to output linear kinetic energy to achieve upward contact with the outer pin of the coil, further effectively improve the stability of the pin bending process, and at the same time, can use the bottom support guide groove member 432 to improve the kinetic energy output accuracy of the pin bottom support cylinder 431.

[0111] The bending and stamping assembly 44 includes a bending and stamping cylinder 441, a stamping guide groove 442 and a stamping head 443; wherein, the base of the bending and stamping cylinder 441 and the stamping guide groove 442 are respectively fixedly assembled on the basic frame body 41, and the kinetic energy output end of the bending and stamping cylinder 441 is slidably arranged in the internal through groove of the stamping guide groove 442, and the kinetic energy output end of the bending and stamping cylinder 441 is vertically corresponding to the upper outer position of the kinetic energy output end of the pin bottom support cylinder 431; the stamping head 443 is fixedly assembled on the kinetic energy output end of the bending and stamping cylinder 441; it is used to utilize the bending and stamping cylinder 441 to output linear kinetic energy to stamp the outer pin of the coil downward to achieve bending and forming, and at the same time, the kinetic energy output accuracy of the bending and stamping cylinder 441 can be improved with the help of the stamping guide groove 442.

[0112] As a preferred solution of this embodiment, when the bottom support pad 433 and the punch head 443 both reach the predetermined bending position, a bending gap corresponding to the pin thickness is provided on the opposite side between the bottom support pad 433 and the punch head 443 to effectively ensure the bending forming angle of the pin.

[0113] Please refer to Figure 5 and Figure 6 The soldering dipping structure 5 includes a soldering transfer assembly 51 and a soldering flux lifting assembly 52, wherein the soldering transfer assembly 51 includes a soldering translation cylinder 511, a first soldering lifting cylinder 512, a soldering transfer motor 513 and a soldering pneumatic clamp 514; wherein the base of the soldering translation cylinder 511 is fixedly mounted on the top surface of the positioning base structure 1, and the kinetic energy output end of the soldering translation cylinder 511 is arranged horizontally; the base of the first soldering lifting cylinder 512 is transmission-fixedly connected to the kinetic energy output end of the soldering translation cylinder 511, and the kinetic energy output end of the first soldering lifting cylinder 512 is arranged vertically; the base of the soldering transfer motor 513 It is transmission-fixedly connected to the kinetic energy output end of the first welding lifting cylinder 512, and the kinetic energy output end of the welding rotation motor 513 is transmission-fixedly connected to the base of the welding pneumatic clamp 514; it is used to effectively drive the welding pneumatic clamp 514 to achieve horizontal and vertical displacement based on the welding translation cylinder 511 and the first welding lifting cylinder 512, and then the electromagnetic coil that completes the bending process can be grasped by the welding pneumatic clamp 514, and the electromagnetic coil can be correspondingly shifted to the upper position of the flux lifting component 52. In addition, the welding rotation motor 513 can be further used to control the angle of the rotating electromagnetic coil, so that the bending pin of the electromagnetic coil can remain vertically corresponding to the flux lifting component 52.

[0114] The flux lifting assembly 52 includes a flux storage tank 521, a second flux lifting cylinder 522 and a flux lifting slot frame 523; wherein the bases of the flux storage tank 521 and the second flux lifting cylinder 522 are respectively fixedly mounted on the top surface of the positioning base structure 1; one end of the flux lifting slot frame 523 is connected to the kinetic energy output end of the second flux lifting cylinder 522 by transmission and fixed connection, so as to utilize the kinetic energy output by the second flux lifting cylinder 522 to drive the flux lifting slot frame 523. The flux lifting trough frame 523 is raised and lowered; the other end of the flux lifting trough frame 523 is extended inside the flux storage tank 521, and the other end of the flux lifting trough frame 523 is provided with a flux trough body; when the bent pin of the electromagnetic coil vertically corresponds to the flux lifting component 52, the flux trough body of the flux lifting trough frame 523 is vertically corresponding to the bent pin of the electromagnetic coil, so as to complete the flux dipping process corresponding to the bent pin of the electromagnetic coil.

[0115] As another preferred scheme of this embodiment, the flux lifting component 52 also includes a liquid level detection component 524, and the liquid level detection component 524 includes a liquid level display transparent tube and a photoelectric sensing switch fixed to the liquid level display transparent tube. The liquid level display transparent tube is connected and fixedly connected to the outer side of the flux storage tank 521, so as to effectively realize real-time monitoring of the liquid level height of the flux inside the flux storage tank 521 with the help of the liquid level detection component 524, thereby improving the overall functional operation stability.

[0116] Please refer to Figure 7 and Figure 8The pin tin dipping structure 6 includes a tin dipping shifting component 61 and a molten tin storage component 63, and the tin dipping shifting component 61 includes a tin dipping translation cylinder 611, a tin dipping lifting cylinder 612, a tin dipping shifting motor 613 and a tin dipping pneumatic clamp 614; wherein, the base of the tin dipping translation cylinder 611 is elevated and fixedly arranged on the top surface of the positioning base structure 1, and the kinetic energy output end of the tin dipping translation cylinder 611 is arranged horizontally; the base of the tin dipping lifting cylinder 612 is transmission-fixedly connected to the linear kinetic energy output end of the tin dipping translation cylinder 611, and the kinetic energy output end of the tin dipping lifting cylinder 612 is arranged vertically; the base of the tin dipping shifting motor 613 is connected to the tin dipping lifting cylinder 612 The linear kinetic energy output ends of the cylinder 612 are transmission-fixedly connected, and the base of the tin-immersing pneumatic clamp 614 is transmission-fixedly connected to the rotational kinetic energy output end of the tin-immersing transfer motor 613; it is used to effectively drive the tin-immersing pneumatic clamp 614 to achieve horizontal and vertical displacement based on the output kinetic energy of the tin-immersing translation cylinder 611 and the tin-immersing lifting cylinder 612, and then the electromagnetic coil that completes the soldering process can be grasped by the tin-immersing pneumatic clamp 614, and the electromagnetic coil can be further correspondingly shifted to the upper position of the molten tin storage component 63. In addition, the electromagnetic coil and its pins of the tin-immersing transfer motor 613 can be used to control the rotation, so that the bent pins of the electromagnetic coil vertically correspond to the molten tin storage component 63 to perform the tin-immersing process.

[0117] As another preferred embodiment of the present invention, the pin tinning structure 6 also includes a tin liquid scraping layer assembly 62, and the tin liquid scraping layer assembly 62 includes a scraping layer translation cylinder 621, a directional guide rail slide 622, a scraping layer lifting cylinder 623 and an extended scraper 624; wherein, the base of the scraping layer translation cylinder 621 and the directional guide rail slide 622 are respectively horizontally fixedly assembled on the top surface of the positioning base structure 1, and the kinetic energy output end of the scraping layer translation cylinder 621 is connected to the directional guide rail slide 622 by a transmission assembly; the base of the scraping layer lifting cylinder 623 is vertically fixedly assembled on the directional guide The sliding output end of the slide seat 622; one end of the extended scraper 624 is transmission-fixedly connected to the kinetic energy output end of the scraping layer lifting cylinder 623, and the other end of the extended scraper 624 can be detachably extended to the inside of the molten tin storage liquid component 63; it is used to respectively utilize the scraping layer translation cylinder 621 and the scraping layer lifting cylinder 623 to cooperate with each other to realize the horizontal and vertical displacement drive of the extended scraper 624, and then the extended scraper 624 can be used to slide and scrape away the scum on the surface of the tin liquid inside the molten tin storage liquid component 63, thereby significantly improving the overall tin dipping quality and functional stability of the bent pins of the electromagnetic coil.

[0118] More preferably, the molten tin storage assembly 63 includes a molten tin furnace 631 and a tin dipping groove 632 opened on the top surface of the molten tin furnace 631; the other end of the extended scraper 624 is provided with a one-to-one corresponding blocking distance between the two side parts along the scraping sliding direction and the two side parts of the tin dipping groove 632, so that the extended scraper 624 can effectively ensure the scraping of the predetermined tin dipping liquid level position, and at the same time, the blocking distance can significantly reduce the possibility that the extended scraper 624 is difficult to lift out of the tin dipping groove 632 after the scum is adhered to it, or the adhered scum is caused to fall back into the molten tin furnace 631 due to collision.

[0119] As another preferred solution of this embodiment, please continue to refer to Figure 7 The tin-immersion transfer component 61 also includes a laser distance measuring component 615. The base of the laser distance measuring component 615 is fixedly mounted on the top surface of the positioning base structure 1, and the detection end of the laser distance measuring component 615 is vertically located above the tin-immersion slot 632, so as to use the laser distance measuring component 615 to monitor the height of the molten tin liquid level inside the tin-melting furnace 631 from the tin-immersion slot 632 in real time. When the height of the molten tin liquid level slowly decreases due to the consumption of solder, the laser distance measuring component 615 can send the liquid level information to the electric control structure 9 in real time, and the electric control structure 9 further outputs the command information after calculation and feeds it back to the intelligent lifting module. The intelligent lifting module makes real-time adjustments to the lifting height of the tin-immersion lifting cylinder 612, thereby realizing the automatic adjustment and compensation function of the descending height, thereby ensuring that the coil pins are immersed in the tin liquid at the same depth, and ensuring the consistency of the tin-immersion quality.

[0120] More preferably, the laser ranging component 615 is set with a standard liquid level height value and a maximum liquid level drop parameter, so that when the liquid level drop value exceeds the set maximum value, the electronic control structure 9 outputs a command to control the alarm prompt and control the work to stop until the solder is added and unlocked to work again.

[0121] Please refer to Fig. 9 and Fig.10 The impedance detection structure 7 includes a horizontal telescopic cylinder 71, an upper and lower limit alarm resistor 72 and a test probe 73; wherein, the base of the horizontal telescopic cylinder 71 is raised and fixedly connected to the top surface of the positioning base structure 1, and the linear kinetic energy output end of the horizontal telescopic cylinder 71 is fixedly assembled and connected to the upper and lower limit alarm resistor 72, and the upper and lower limit alarm resistor 72 has two test probes 73, and the two test probes 73 of the upper and lower limit alarm resistor 72 are arranged to be correspondingly and switchably disposed with the two bent pins of one group of electromagnetic coils, so as to utilize the horizontal telescopic cylinder 71 to extend and drive the test probe 73 to contact the bent pins of the electromagnetic coil, and then the upper and lower limit alarm resistor 72 completes the automatic detection of the impedance power-on of the electromagnetic coil.

[0122] Please refer to Fig.11 The material unloading and handling structure 8 includes a material unloading and transferring component 81, a material unloading conveyor belt component 82 and an NG material unloading component 83; the base portion of the material unloading and transferring component 81, the base portion of the material unloading and conveyor belt component 82 and the base portion of the NG material unloading component 83 are respectively fixedly connected to the top surface of the positioning base structure 1, and the material unloading and transferring component 81 is provided with a displaceable material unloading and extraction end portion, the extraction end portion of the material unloading and transferring component 81 can be linearly displaced and is correspondingly located between one group of the positioning loading seat bodies 32 and an upstream end portion of the material unloading and conveyor belt component 82, and the NG material unloading component 83 corresponds to the linear displacement path of the extraction end portion of the material unloading and transferring component 81, so as to sequentially transport and shift the electromagnetic coils that have completed impedance detection through the material unloading and transferring component 81, and can be transported and shifted to the material unloading conveyor belt component 82 or the NG material unloading component 83 according to the detection and judgment results of the electric control structure 9.

[0123] It should be noted that the electric control structure 9 includes a power module, a control module and an intelligent lifting module connected by a circuit. The control module can be selected from but not limited to a single-chip microcomputer control board of model AT80C51 and a microcontroller of model STM32; the control output end of the control module is connected to the input end of a relay through a circuit, and the output end of the relay is respectively connected to the intelligent lifting module, the feeding conveyor belt assembly 21 and the feeding transfer assembly 22 in the feeding and handling structure 2, the driving turntable assembly 31 in the loading turntable structure 3, the coil pressing cylinder 421, the pin bottom support cylinder 431 and the bending stamping cylinder 441 in the pin bending structure 4, the soldering translation cylinder 511, the first soldering lifting cylinder 512, the soldering indexing motor 513, the soldering pneumatic clamp 514 and the second soldering pneumatic clamp 515 in the soldering dipping structure 5. The welding lifting cylinder 522, the tinning translation cylinder 611 in the pin tinning structure 6, the tinning lifting cylinder 612, the tinning indexing motor 613, the tinning pneumatic clamp 614, the scraping layer translation cylinder 621 and the scraping layer lifting cylinder 623, the horizontal telescopic cylinder 71 in the impedance detection structure 7, and the unloading and transferring component 81, the unloading conveyor belt component 82 and the NG unloading component 83 of the unloading and handling structure 8 are connected through circuits; the material laser detection component 23 in the loading and handling structure 2, the liquid level detection component 524 in the flux dipping structure 5, the laser ranging component 615 in the pin tinning structure 6 and the upper and lower limit alarm resistor 72 in the impedance detection structure 7 are also respectively connected to the control input end of the control module through circuits to complete the automatic operation control of the overall architecture function.

[0124] The embodiment of the present invention further provides an automatic bending and tinning method according to the automatic bending and tinning device based on the electromagnetic coil pin, which specifically includes the following steps:

[0125] The electromagnetic coil to be operated is installed to the feeding conveyor belt assembly 21 in the feeding and handling structure 2 with the pins facing outward, and the start button is pressed to start the feeding conveyor belt assembly 21. After the material laser detection assembly 23 detects the existence of the electromagnetic coil in the feeding conveyor belt assembly 21, the feeding and transferring assembly 22 extracts the electromagnetic coil and transports it to the positioning and loading seat body 32 of the loading turntable structure 3; then the feeding conveyor belt assembly 21 is operated again to transfer the electromagnetic coil to the feeding waiting position, and the cycle is repeated in sequence until the material laser detection assembly 23 fails to detect the coil corresponding to the feeding conveyor belt assembly 21, then the feeding conveyor belt assembly 21 stops running and waits for the electromagnetic coil to be placed on the feeding conveyor belt assembly 21 again; at this time, several groups of electromagnetic coils are respectively placed one by one in several groups of positioning and loading seat bodies 32, and the pins of several groups of electromagnetic coils are kept outward;

[0126] A plurality of groups of electromagnetic coil pins are sequentially transferred to the corresponding pin bending structure 4 for the bending process. After the electromagnetic coil to be bent is rotated into position by the driving turntable assembly 31, the coil body is firstly pressed and fixed by the coil clamping assembly 42 in the pin bending structure 4, and then the pin bottom support cylinder 431 in the pin bottom support assembly 43 drives the bottom support pad 433 upward, and makes the bottom support pad 433 contact upward against the coil pin, and then the bending punching cylinder 441 in the bending punching assembly 44 drives the bending punching head 443 downward, and the punching head 443 punches and contacts the electromagnetic coil pin, and makes the electromagnetic coil pin bend downward into shape;

[0127] After the electromagnetic coil pin is bent and formed, under the control of the electric control structure 9, the components of the pin bending structure 4 are withdrawn in sequence, and the electromagnetic coil remaining on the loading turntable structure 3 completes the pin bending process;

[0128] The plurality of groups of electromagnetic coil pins that have completed the bending process are sequentially shifted to the positions corresponding to the flux dipping structure 5 for the fluxing process. After the electromagnetic coil for fluxing is rotated to the position by the driving turntable assembly 31, the fluxing shifting assembly 51 in the flux dipping structure 5 first drives the fluxing pneumatic clamp 514 downward via the first fluxing lifting cylinder 512, and the fluxing pneumatic clamp 514 grabs the electromagnetic coil that has completed the bending process on the workstation, and lifts the electromagnetic coil upward via the first fluxing lifting cylinder 512; then the fluxing shifting assembly 51 further drives the fluxing pneumatic clamp 514 and its grasping electromagnetic coil to shift to the top of the flux lifting assembly 52 via the flux translation cylinder 511; then the fluxing shifting assembly 51 drives the fluxing pneumatic clamp 514 to rotate via the flux shifting motor 513, and the fluxing position of the electromagnetic coil pin is downward, so as to complete the fluxing positioning of the electromagnetic coil pin;

[0129] The second flux lifting cylinder 522 in the flux lifting assembly 52 further drives the flux lifting slot frame 523 and the built-in flux to rise to the position of the electromagnetic coil pin, until the pin of the electromagnetic coil that needs to be tinned is dipped into the flux in the flux lifting slot frame 523 at a specific height;

[0130] Continue to control the second flux lifting cylinder 522 to drive the flux lifting slot frame 523 to move downward to the original position, and the flux shifting assembly 51 drives the flux pneumatic clamping claw 514 to shift and shift respectively, and then put the electromagnetic coil back to the loading turntable structure 3, so as to complete the flux dipping process of the electromagnetic coil pin;

[0131] In an optional embodiment, in a stationary state, the flux liquid level of the flux storage tank 521 is higher than the upper end of the receiving opening of the flux lifting slot frame 523, thereby ensuring that each time the flux lifting slot frame 523 is lifted, the built-in flux is in a full tank state, ensuring that the height of the electromagnetic coil pin dipped in the flux is consistent;

[0132] In another optional implementation scheme, the flux lifting component 52 has a liquid level detection function. When the liquid level in the flux storage tank 521 is detected by the liquid level detection component 524 to be lower than the set value, the whole system alarms and stops working. It can be unlocked and worked again after adding flux: Specifically, when the flux is consumed, causing the internal liquid level of the flux storage tank 521 to decrease, the built-in photoelectric switch of the liquid level detection component 524 cannot sense the liquid level, then its indicator light is on, and then a command signal is output. After receiving the command signal, the system stops working, and the external touch screen prompts that the flux liquid level is low and needs to be replenished. After the photoelectric switch recognizes that the replenishment is completed, the indicator light goes out, the output signal disappears, and the system can resume working after being reset;

[0133] The plurality of groups of electromagnetic coil pins that have completed the soldering process are sequentially transferred to the corresponding pin tinning structure 6 for the tinning process. After the tinned electromagnetic coil is rotated to the right position by the driving turntable assembly 31, the tinning shifting assembly 61 in the pin tinning structure 6 first drives the tinning pneumatic clamp 614 downward via the tinning lifting cylinder 612, and the tinning pneumatic clamp 614 grabs the electromagnetic coil that has completed the soldering process on the workstation, and lifts the electromagnetic coil upward via the tinning lifting cylinder 612; then the tinning shifting assembly 61 further drives the tinning pneumatic clamp 614 and its grabbing electromagnetic coil to shift to the top of the molten tin storage assembly 63 via the tinning translation cylinder 611; then the tinning shifting assembly 61 drives the tinning pneumatic clamp 614 to rotate via the tinning shifting motor 613, and the tinning part of the electromagnetic coil pin is downward, completing the tinning positioning of the electromagnetic coil pin;

[0134] At the same time, the molten tin liquid surface scum scraping and cleaning process is performed by the tin liquid scraping component 62 corresponding to the molten tin storage component 63, specifically: the scraping layer translation cylinder 621 in the tin liquid scraping component 62 is controlled to push the extension scraper 624 to one end of the molten tin storage component 63, and then the scraping layer lifting cylinder 623 in the tin liquid scraping component 62 is used to lower the extension scraper 624 to the tin liquid surface, and then the scraping layer translation cylinder 621 is controlled to retract the extension scraper 624 to the other end of the molten tin storage component 63 to clean the scum on the liquid surface, and then the scraping layer lifting cylinder 623 is raised to move the extension scraper 624 away from the tin liquid surface, thereby completing one liquid surface cleaning;

[0135] The electric control structure 9 further controls the tin-immersion lifting cylinder 612 to drive the tin-immersion pneumatic clamp 614 and the electromagnetic coil pin end grasped by it to move downward. The downward movement of the electromagnetic coil pin end has an automatic adjustment and compensation function for the descending height, that is, when the tin liquid plane height slowly decreases due to the tin-immersion consumption, the laser ranging component 615 feeds back the tin liquid plane height to the electric control structure 9 in real time. After calculation, the electric control structure 9 controls the descending height of the tin-immersion lifting cylinder 612 to ensure that the electromagnetic coil pin is immersed in the tin liquid at a consistent depth, thereby ensuring the consistency of the tin-immersion quality. As a result, the electromagnetic coil pin end is inserted downward to the internal tin liquid level of the molten tin storage component 63, so that the electromagnetic coil pin completes the tin-immersion process of a predetermined height.

[0136] The laser distance measuring component 615 is set with parameters of the standard height value of the liquid level and the maximum value of the liquid level drop. When the liquid level drops beyond the set maximum value, the whole system alarms and stops working until the specific tin liquid is refilled, and then the tinning work can be unlocked again.

[0137] The plurality of groups of electromagnetic coil pins that have completed the tinning process are sequentially transferred to the corresponding impedance detection structure 7 for the impedance detection process. After the electromagnetic coil to be detected is rotated into place by the driving turntable assembly 31, the horizontal telescopic cylinder 71 in the impedance detection structure 7 first drives the test probe 73 to extend and contact the electromagnetic coil pin, and the electric control structure 9 detects the coil impedance through the upper and lower limit alarm resistor meter 72. When the measured impedance is within the required range, the upper and lower limit alarm resistor meter 72 does not alarm, and the system does not receive the alarm signal within the specified time, that is, it is assumed that the impedance of the coil at this station is qualified and recorded. When the impedance is not within the required range, the upper and lower limit alarm resistor meter 72 will output an alarm, and the system receives a non-qualified signal and records the non-qualified.

[0138] The unloading and handling structure 8 transports the NG products in the inspected electromagnetic coils to the corresponding NG collection container through the unloading and transferring component 81 according to the system judgment result, and transports the qualified products to the unloading conveyor belt component 82, and then conducts tin immersion appearance inspection after transportation and stacks them in the turnover plate.

[0139] Although the present invention has been described in detail above by general description and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made on the basis of the present invention. Therefore, these modifications or improvements made on the basis of not departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. An automatic bending and tinning equipment based on electromagnetic coil pins, characterized in that: include: Positioning abutment structures; A loading turntable structure is mounted on the positioning base structure, and the loading turntable structure is provided with a controllable rotatable turntable surface, and the controllable rotatable turntable surface is provided with a plurality of groups of electromagnetic coil stations; A loading and unloading material handling structure is assembled on the positioning base structure, and the loading and unloading material handling structure is respectively arranged correspondingly between the loading end and the unloading end of the loading turntable structure; A pin bending structure is assembled on the positioning base structure, and the pin bending structure includes a bending stamping assembly, the bending stamping assembly is sequentially arranged corresponding to a plurality of groups of electromagnetic coil stations of the loading turntable structure, and the bending stamping assembly can output stamping kinetic energy to bend the electromagnetic coil pin; A soldering solder dipping structure is mounted on the positioning base structure, and the soldering solder dipping structure includes a soldering soldering transfer assembly and a soldering solder flux lifting assembly, wherein the soldering soldering transfer assembly is provided with at least one transfer kinetic energy output end for driving the pin bending electromagnetic coil, and the soldering solder flux lifting assembly is provided with at least one soldering solder flux lifting end, and the transfer kinetic energy output end of the soldering soldering transfer assembly drives the soldering ... The pin tinning structure is assembled on the positioning base structure, and the pin tinning structure includes a tinning transfer component and a molten tin storage component, the tinning transfer component is provided with at least one transfer kinetic energy output end for driving the pin soldering electromagnetic coil, and the transfer kinetic energy output end of the tinning transfer component drives the electromagnetic coil pin and the molten tin storage component to be arranged in an adaptive height-adjusting correspondence; An impedance detection structure is assembled on the positioning base structure, and the impedance detection structure includes an upper and lower limit alarm resistor and a horizontally shiftable test probe connected to the upper and lower limit alarm resistor through a circuit. The upper and lower limit alarm resistor is switchably corresponding to a plurality of groups of electromagnetic coil stations arranged on the loading turntable structure through the horizontally shiftable test probe.

2. The automatic bending and tinning equipment based on electromagnetic coil pins according to claim 1 is characterized in that: The loading turntable structure includes a driving turntable assembly and a positioning loading seat body; The base part of the driving turntable assembly is fixedly mounted on the top surface of the positioning base structure, and the driving turntable assembly has a controllable rotatable turntable surface; The positioning and loading seat bodies are provided in a plurality of groups, and the plurality of positioning and loading seat bodies are arranged as electromagnetic coil stations in a circular array on the top of the outer edge of the turntable surface of the driving turntable assembly; The loading and unloading material handling structure comprises a loading material handling structure and a unloading material handling structure; The material loading and handling structure comprises a material loading conveyor belt assembly and a material loading and transferring assembly respectively fixedly connected to the top surface of the positioning base structure; The feeding conveyor belt assembly is used for directional arrangement and conveying of a plurality of groups of electromagnetic coils; The material loading and transferring components are respectively provided with a material laser detection component and a displaceable material loading and extracting end portion, through which the material laser detection component detects in real time the positions of several groups of electromagnetic coils located on the material loading conveyor belt component, and at the same time, the electromagnetic coils transported to the position by the material loading and transferring components are further extracted and shifted to one of the groups of positioning and loading seats through the extracting end portion of the material loading and transferring components; The extraction end of the loading and transferring assembly can be linearly displaced and positioned between a downstream end of the loading conveyor assembly and one of the positioning and loading seats; The material unloading and handling structure includes a material unloading and transfer assembly, a material unloading conveyor belt assembly and an NG material unloading assembly; The base of the material unloading and transferring assembly, the base of the material unloading conveyor assembly and the base of the NG material unloading assembly are respectively fixedly connected to the top end surface of the positioning base structure, and the material unloading and transferring assembly is provided with a displaceable material unloading and extracting end portion, and the extracting end portion of the material unloading and transferring assembly can be linearly displaced and correspondingly located between one set of the positioning and loading seat bodies and one end of the material unloading conveyor assembly; The NG material unloading component corresponds to a linear displacement path located at the extraction end of the material unloading and transferring component.

3. The automatic bending and tinning equipment based on electromagnetic coil pins according to claim 2 is characterized in that: The pin bending structure also includes a basic frame body, a coil pressing assembly and a pin bottom support assembly; The basic frame body and the base part of the pin bottom support assembly are respectively fixedly assembled on the top surface of the positioning base structure, and the base part of the coil pressing assembly and the base part of the bending and stamping assembly are respectively fixedly assembled on the basic frame body; The coil pressing assembly is configured as a coil pressing cylinder, the kinetic energy output end of the coil pressing cylinder is vertically correspondingly arranged above the circular trajectory of the plurality of groups of positioning and loading seats, and the coil pressing cylinder is used to press and position the electromagnetic coil corresponding to the positioning and loading seat; The pin bottom support assembly comprises a pin bottom support cylinder, a bottom support guide groove and a bottom support pad; The bottom support guide groove member is fixedly mounted on the basic frame body; The base of the pin bottom support cylinder is fixedly assembled on the top surface of the positioning base structure, and the kinetic energy output end of the pin bottom support cylinder is slidably arranged in the internal through groove of the bottom support guide groove member, and the kinetic energy output end of the pin bottom support cylinder is fixedly assembled with a bottom support pad, and the bottom support pad is vertically arranged at a position below the outer periphery of the circular trajectory of the positioning loading seat bodies of the plurality of groups, and the pin bottom support cylinder can output linear kinetic energy to drive the bottom support pad to touch the outer pin of the coil upward; The bending and punching assembly comprises a bending and punching cylinder, a punching guide groove and a punching head; The base of the bending stamping cylinder and the stamping guide groove are respectively fixedly assembled on the basic frame body, and the kinetic energy output end of the bending stamping cylinder is slidably arranged in the internal through groove of the stamping guide groove, and the kinetic energy output end of the bending stamping cylinder is fixedly assembled with a stamping head, and the stamping head is vertically arranged at the upper outer position of the kinetic energy output end of the pin bottom support cylinder, and the bending stamping cylinder outputs linear kinetic energy to drive the stamping head to stamp the outer pin of the coil downward to bend and form; When the bottom support pad and the punch head both reach a predetermined bending position, a bending gap corresponding to the thickness of the pin is provided on the opposite side between the bottom support pad and the punch head.

4. The automatic bending and tinning equipment based on electromagnetic coil pins according to claim 3 is characterized in that: The soldering transfer assembly comprises a soldering translation cylinder, a first soldering lifting cylinder, a soldering transfer motor and a soldering pneumatic clamp; The base of the welding translation cylinder is fixedly mounted on the top surface of the positioning base structure, and the kinetic energy output end of the welding translation cylinder is arranged in the horizontal direction; The base of the first welding lifting cylinder is connected to the kinetic energy output end of the welding translation cylinder by transmission fixed connection, and the kinetic energy output end of the first welding lifting cylinder is arranged vertically; The base of the soldering indexing motor is connected to the kinetic energy output end of the first soldering lifting cylinder by transmission and fixed connection, and the kinetic energy output end of the soldering indexing motor is connected to the base of the soldering pneumatic clamp by transmission and fixed connection; The soldering flux lifting assembly includes a soldering flux storage tank, a second soldering flux lifting cylinder, a soldering flux lifting trough frame and a liquid level detection assembly; The bases of the flux storage tank and the second flux lifting cylinder are respectively fixedly mounted on the top surface of the positioning base structure; one end of the flux lifting trough frame is transmission-fixedly connected to the kinetic energy output end of the second flux lifting cylinder, and the other end of the flux lifting trough frame is provided with a flux trough body, and the flux trough body extends and is located inside the flux storage tank; When the bent pin of the electromagnetic coil vertically corresponds to the flux lifting component, the flux tank body of the flux lifting tank frame is vertically arranged corresponding to the bent pin of the electromagnetic coil; The liquid level detection assembly includes a liquid level display transparent tube and a photoelectric sensing switch fixed to the liquid level display transparent tube; The transparent tube of the liquid level display is connected and fixedly arranged on the outer side of the flux storage tank, and the liquid level detection component monitors the liquid level height of the flux inside the flux storage tank in real time.

5. The automatic bending and tinning equipment based on electromagnetic coil pins according to claim 4 is characterized in that: The tin immersion transfer assembly includes a tin immersion translation cylinder, a tin immersion lifting cylinder, a tin immersion transfer motor and a tin immersion pneumatic clamp; The base of the tin-immersion translation cylinder is fixedly mounted on the top surface of the positioning base structure, and the kinetic energy output end of the tin-immersion translation cylinder is arranged in the horizontal direction; The base of the tin-immersion lifting cylinder is connected to the linear kinetic energy output end of the tin-immersion translation cylinder by transmission and fixed connection, and the kinetic energy output end of the tin-immersion lifting cylinder is arranged vertically; The base of the tin-immersion indexing motor is connected to the linear kinetic energy output end of the tin-immersion lifting cylinder by transmission and fixed connection, and the rotational kinetic energy output end of the tin-immersion indexing motor is connected to the base of the tin-immersion pneumatic clamp by transmission and fixed connection; The molten tin liquid storage assembly comprises a molten tin furnace and a tin dipping slot opened on the top surface of the molten tin furnace; The tin-immersion pneumatic clamp drives the electromagnetic coil pins to be arranged in an adjustable height corresponding to the tin-immersion notch.

6. The automatic bending and tinning equipment based on electromagnetic coil pins according to claim 5 is characterized in that: The pin tinning structure also includes a tin liquid scraping assembly, which includes a scraping layer translation cylinder, a directional guide rail slide, a scraping layer lifting cylinder and an extension scraper; The base of the scraping layer translation cylinder and the directional guide rail slide are respectively fixedly mounted horizontally on the top surface of the positioning base structure, and the kinetic energy output end of the scraping layer translation cylinder is connected to the directional guide rail slide by a transmission assembly; The base of the scraping layer lifting cylinder is vertically fixed to the sliding output end of the directional guide rail slide, and the kinetic energy output end of the scraping layer lifting cylinder is transmission-fixedly connected to one end of the extended scraper, and the other end of the extended scraper can be detachably extended to the inside of the molten tin liquid storage assembly.

7. The automatic bending and tinning equipment based on electromagnetic coil pins according to claim 5 is characterized in that: The tin immersion transfer assembly also includes a laser distance measurement assembly; The base of the laser ranging component is elevated and fixedly assembled on the top surface of the positioning base structure, and the detection end of the laser ranging component is vertically located above the tin dipping slot. The laser ranging component monitors the height of the molten tin liquid level inside the tin melting furnace from the tin dipping slot in real time. When the height of the molten tin liquid level decreases due to solder consumption, the laser ranging component sends the liquid level information to the intelligent lifting module in real time. The intelligent lifting module adjusts the lifting height of the tin dipping lifting cylinder in real time to perform an automatic adjustment and compensation function for the descending height, so that the coil pins are immersed in the tin liquid to the same depth.

8. The automatic bending and tinning equipment based on electromagnetic coil pins according to claim 7 is characterized in that: The impedance detection structure also includes a horizontal telescopic cylinder; The base of the horizontal telescopic cylinder is raised and fixedly connected to the top surface of the positioning base structure, and the linear kinetic energy output end of the horizontal telescopic cylinder is fixedly assembled and connected to the upper and lower limit alarm resistors. The upper and lower limit alarm resistors have two test probes, and the two test probes of the upper and lower limit alarm resistors are switchably arranged to correspond to the two bent pins of one group of electromagnetic coils. The test probes are extended and driven by the horizontal telescopic cylinder to contact the bent pins of the electromagnetic coils, and the upper and lower limit alarm resistors complete the automatic detection of the impedance power-on of the electromagnetic coils.

9. The automatic bending and tinning equipment based on electromagnetic coil pins according to claim 8 is characterized in that: Also includes: The electric control structure is respectively connected with the intelligent lifting module, the loading and transporting structure, the loading turntable structure, the pin bending structure, the flux dipping structure, the pin tinning structure, the impedance detection structure and the unloading and transporting structure through circuits.

10. An automatic bending and tinning method based on the automatic bending and tinning equipment of the electromagnetic coil pin according to claim 9, characterized in that: The specific steps include: The electromagnetic coil to be operated is installed to the feeding conveyor assembly in the feeding and handling structure with the pins facing outwards, and the start button is pressed to start the feeding conveyor assembly. After the material laser detection assembly detects the existence of the electromagnetic coil in the feeding conveyor assembly, the feeding transfer assembly extracts the electromagnetic coil and transports it to the positioning loading seat body of the loading turntable structure; then the feeding conveyor assembly runs again to transfer the electromagnetic coil to the feeding waiting position, and repeats the cycle in sequence until the material laser detection assembly cannot detect the coil corresponding to the feeding conveyor assembly, then the feeding conveyor assembly stops running and waits for the electromagnetic coil to be placed on the feeding conveyor assembly again; at this time, several groups of electromagnetic coils are respectively placed one by one on several groups of positioning loading seats, and the pins of several groups of electromagnetic coils are kept facing outwards; A plurality of groups of electromagnetic coil pins are sequentially transferred to the corresponding pin bending structures for the bending process. After the electromagnetic coil to be bent is rotated into position by the driving turntable assembly, the coil body is firstly pressed and fixed by the coil clamping assembly in the pin bending structure. Then, the pin bottom support cylinder in the pin bottom support assembly drives the bottom support pad upward, and makes the bottom support pad contact upward against the coil pin. Then, the bending punch head is driven downward by the bending punch cylinder in the bending punch assembly, and the punch head contacts the electromagnetic coil pin, and makes the electromagnetic coil pin bend downward into shape. After the electromagnetic coil pin is bent into shape, the components of the pin bending structure are sequentially withdrawn under the control of the electric control structure, and the electromagnetic coil retained in the loading turntable structure completes the pin bending process. The plurality of groups of electromagnetic coil pins that have completed the bending process are sequentially transferred to the corresponding positions of the flux dipping structure for the fluxing process. After the electromagnetic coil for fluxing is rotated into position by the driving turntable assembly, the fluxing transfer assembly in the flux dipping structure first drives the fluxing pneumatic clamp downward via the first fluxing lifting cylinder, and the fluxing pneumatic clamp grabs the electromagnetic coil that has completed the bending process on the workstation, and lifts the electromagnetic coil upward via the first fluxing lifting cylinder; then the fluxing transfer assembly further drives the fluxing pneumatic clamp and its grasping electromagnetic coil to shift to the top of the flux lifting assembly via the flux translation cylinder; then the fluxing transfer assembly drives the fluxing pneumatic clamp to rotate via the flux transfer motor, and the fluxing part of the electromagnetic coil pin is downward, thus completing the fluxing positioning of the electromagnetic coil pin; In a static state, the flux liquid level in the flux storage tank is higher than the upper end of the receiving opening of the flux lifting trough frame, thereby ensuring that each time the flux lifting trough frame is lifted, the built-in flux is in a full trough state, ensuring that the height of the electromagnetic coil pins dipped in the flux is consistent; further, the second flux lifting cylinder in the flux lifting assembly drives the flux lifting trough frame and its built-in flux to rise to the position of the electromagnetic coil pins, until the electromagnetic coil pins that need to be tinned are dipped into the flux in the flux lifting trough frame at a specific height; Continue to control the second flux lifting cylinder to drive the flux lifting slot frame down to the original position, and the flux shifting assembly drives the flux pneumatic clamping claw to shift and shift respectively, and then put the electromagnetic coil back to the loading turntable structure, so as to complete the flux dipping process of the electromagnetic coil pin; The flux lifting component has a liquid level detection function. When the liquid level detection component detects that the liquid level in the flux storage tank is lower than the set value, the built-in photoelectric switch of the liquid level detection component cannot sense the liquid level, and its indicator light will light up, and then the command signal will be output. After the system receives the command signal, it will stop working, and the external touch screen will prompt that the flux liquid level is low and liquid needs to be replenished. When the photoelectric switch recognizes that the liquid replenishment is completed, the indicator light will go out, the output signal disappears, and the system can resume work after resetting; The plurality of groups of electromagnetic coil pins that have completed the soldering process are sequentially transferred to the corresponding pin tinning structures for the tinning process. After the tinned electromagnetic coil is rotated into position by the driving turntable assembly, the tinning transfer assembly in the pin tinning structure first drives the tinning pneumatic clamp downward via the tinning lifting cylinder, and the tinning pneumatic clamp grabs the electromagnetic coil that has completed the soldering process on the workstation, and lifts the electromagnetic coil upward via the tinning lifting cylinder; then the tinning transfer assembly drives the tinning pneumatic clamp and its grabbing electromagnetic coil to shift to the top of the molten tin storage assembly via the tinning translation cylinder; then the tinning transfer assembly drives the tinning pneumatic clamp to rotate via the tinning transfer motor, and the tinning part of the electromagnetic coil pin is downward, completing the tinning positioning of the electromagnetic coil pin; At the same time, the molten tin liquid surface scum scraping and cleaning process is performed by the tin liquid scraping component corresponding to the molten tin liquid storage component, specifically: the scraping layer translation cylinder in the tin liquid scraping component is controlled to push the extension scraper to one end of the molten tin liquid storage component, and then the scraping layer lifting cylinder in the tin liquid scraping component is used to lower the extension scraper to the tin liquid surface, and then the scraping layer translation cylinder is controlled to retract the extension scraper to the other end of the molten tin liquid storage component to clean the scum on the liquid surface, and then the scraping layer lifting cylinder is raised to move the extension scraper away from the tin liquid surface, thereby completing one liquid surface cleaning; The electric control structure further controls the tin-immersion lifting cylinder to drive the tin-immersion pneumatic clamp and the end of the electromagnetic coil pin grasped by it to move downward. The downward movement of the end of the electromagnetic coil pin has an automatic adjustment and compensation function for the descending height, that is, when the height of the tin liquid plane slowly decreases due to the consumption of tin immersion, the laser ranging component feeds back the height of the tin liquid plane in real time to the electric control structure. The electric control structure controls the descending height of the tin-immersion lifting cylinder after calculation to ensure that the electromagnetic coil pin is immersed in the tin liquid at a consistent depth, thereby ensuring the consistency of the tin immersion quality, thereby inserting the end of the electromagnetic coil pin downward into the internal tin liquid surface of the molten tin storage component, so that the electromagnetic coil pin completes the tin immersion process of a predetermined height; wherein the laser ranging component is set with a standard liquid level height value and a maximum liquid level drop parameter. When it is detected that the liquid level drops by more than the set maximum value, the whole system alarms and prompts, and stops working until the specific tin liquid is refilled, and then the tin immersion work can be unlocked again; The pins of several groups of electromagnetic coils that have completed the tinning process are sequentially transferred to the corresponding impedance detection structures for the impedance detection process. After the electromagnetic coil to be detected is rotated into place by the driving turntable assembly, the horizontal telescopic cylinder in the impedance detection structure first drives the test probe to extend and contact the electromagnetic coil pins. The electric control structure detects the coil impedance through the upper and lower limit alarm resistor meter. When the measured impedance is within the required range, the upper and lower limit alarm resistor meter does not alarm, and the system does not receive the alarm signal within the specified time, that is, it is assumed that the impedance of the coil at this station is qualified and recorded. When the impedance is not within the required range, the upper and lower limit alarm resistor meter will output an alarm, and the system will receive a non-qualified signal and record the non-qualified. According to the system's judgment results, the unloading and handling structure transports the NG products in the inspected electromagnetic coils to the corresponding NG collection container through the unloading and transferring component, and transports the qualified products to the unloading conveyor belt component, and then conducts a tin immersion appearance inspection after transportation and stacks them on the turnover plate.

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